JP2002271784A - Data transmission method and device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a data transmission method and device that can efficiently transmit an optical signal based on serial data forming a digital video signal in number of quantization bits of 10 bits or more in two-way by using optical signal transmission cables in order to minimize number of the signal transmission cables. SOLUTION: The serial data based on a D-Cinema signal in number of quantized bits of 10 bits or more from a camera section 10 are converted into an optical signal, the optical signal is transmitted through an optical signal transmission cable 41 by way of a two-way WDM(wavelength division multiplexing) coupler 30 placed at one end of the optical signal transmission cable 41, the optical signal is transmitted from the one end of the optical signal transmission cable 41 to the other end, serial data based on a return video signal from a signal recording and reproducing section 11 are converted into an optical signal, the optical signal is transmitted to the optical signal transmission cable 41 through a two-way WDM coupler 42 placed at the other end of the optical signal transmission cable 41 and transmitted from the other end of the optical signal transmission cable 41 to the one end.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The invention described in the claims of the present application relates to a method in which a plurality of digital data representing video signal information and the like are converted into serial data, and a plurality of optical data obtained by subjecting them to light-to-light conversion processing. The present invention relates to a data transmission method for transmitting a signal bidirectionally between two transmission / reception units via an optical signal transmission cable, and a data transmission apparatus used for the method.

[0002]

2. Description of the Related Art In the field of video signals, transmission information
From the viewpoint of realizing diversification and high quality of reproduced images, etc.
Digitalization has been attempted, for example, video signal information
Digit formed by digital data
High-definition television (High Definiti)
on Television: HDTV)
You. Digital video under HDTV system
Signals (hereinafter referred to as HD digital video signals)
BTA (Broadcasting Technology Association:
Formed according to the standards established by the Transport Technology Development Council
And Y, P_B/ P _RFormat and G, B, R formats
There is no. Y, P_B/ P_RFor format, Y is the luminance signal
Means P_BAnd P_RMeans a color difference signal. Also,
In the case of the G, B, and R formats, G, B, and R are each a green primary color signal.
, A blue primary color signal and a red primary color signal.

[0003] Y, HD digital picture signal of P _B / P _R format, frame rate 30Hz or 30/1.
001 Hz (in this application, any of these is 30H
called z. ), Each frame image is a signal for interlaced scanning that is formed by being divided into a first field image and a second field image, and follows a data format as shown in FIG. 34, for example. You. The data format shown in FIG. 34 includes a luminance signal data sequence (Y data sequence) representing luminance signal information in a video signal as shown in FIG.
Of as shown in the fourth B, become from the color difference signal data sequence representing the color difference signal information in the video signal (P _B / P _R data sequence), each of the Y data sequence and P _B / P _R data series Quantum The number of coded bits is 10 bits, so that each of the word data forming it has a 10-bit configuration, and the word transmission rate is, for example, 7 bits.
4.25 MBps. And in FIG. 34A,
Y is shown a portion of the video data unit in the line blanking section and the front and rear thereof in each line portion of the data series, also in FIG. 34 of B, in each line unit in the P _B / P _R data sequence The line blanking part and a part of the video data part before and after the line blanking part are shown.

In the Y data series, immediately before each video data portion, four words (3 words each having a 10-bit configuration) are used.
FF (Y), 000 (Y), 000 (Y), XYZ
(Y); 3FF, 000 and XYZ are represented in hexadecimal, and (Y) represents a word in the Y data series. ) Timing reference code data (SA
V: Start of Active Video), and four words (3FF (Y), 000 (Y), 000) each having a 10-bit configuration immediately after each video data part.
(Y), XYZ (Y)), and timing reference code data (EAV: End of Active Video).
Similarly, P _B / P be in the _R data series, just before each image data unit, four words, each of which is a 10-bit configuration (3FF (C), 000 ( C), 000 (C), X
YZ (C); 3FF, 000 and XYZ are hexadecimal, indicating that the (C) the word in P _B / P _R data sequence. ) Consisting of four words (3FF) each having a 10-bit structure immediately after each video data portion.
(C), 000 (C), 000 (C), XYZ (C))
The timing reference code data is composed of EAV. Of course, Y data sequence in the timing reference code data: EAV and SAV Each of the, Y data is arranged in each line blanking section in the sequence, also, P _B / P _R data sequence in the timing reference code data: EAV and SAV each is arranged in each line blanking section of the P _B / P _R data sequence.

Here, four words (3FF, 000,000,000,000, XYZ) indicated with (Y) or (C) are added.
, The first three words (3FF, 000,000,000,000
0) is for establishing word synchronization or line synchronization, and the last one word (XYZ) is used for discriminating between the first field and the second field in the same frame, or a timing reference code. Data: SAV and timing reference code data: for discriminating between EAV (the same applies hereinafter).

The G, B, R format HD digital video signal is also a signal for interlaced scanning at a frame rate of 30 Hz, and follows a data format as shown in FIG. 35, for example. You. FIG.
The data format shown in FIG. 5 includes a green primary color signal data sequence (G data sequence) representing green primary color signal information in a video signal as shown in FIG.
5B, a blue primary color signal data sequence (B data sequence) representing blue primary color signal information in the video signal, and a red color representing red primary color signal information in the video signal, as shown in FIG. 35C. And a primary color signal data sequence (R data sequence). Each of the G data sequence, B data sequence, and R data sequence has a quantization bit number of 10
Each of the word data 4 forming the bits has a 10-bit configuration, and the word transmission rate is, for example, 74.25 MBps. A, B, and C in FIG. 35 respectively include a G data series,
A line blanking part in each line part in the B data series and the R data series and a part of a video data part before and after the line blanking part are shown.

In each of the G data sequence, B data sequence, and R data sequence, immediately before each video data portion, four words (3FF (G), 0FF) each having a 10-bit configuration are used.
00 (G), 000 (G) and XYZ (G) ((G) represents a word in the G data series), 3
FF (B), 000 (B), 000 (B) and XYZ
(B) ((B) indicates a word in the B data series) or 3FF (R), 000
(R), 000 (R) and XYZ (R) ((R) represents a word in the R data series.)), Timing reference code data: SAV is provided, and each video data section is provided. Immediately after, four words (3FF (G), 000 (G), 00) each having a 10-bit configuration
0 (G) and XYZ (G), 3FF (B), 000
(B) 000 (B) and XYZ (B), or 3
FF (R), 000 (R), 000 (R) and XYZ
(R)) timing reference code data: EAV
Is arranged. Of course, G data series, B data series and R data series
Each of the timing reference code data: EAV and SAV in each of the data sequences is allocated to each line blanking section in each of the G, B and R data sequences.

[0008] In the current HDTV system, Y the frame rate as described above is as for interlaced scanning at Moto which is a 30Hz, P _B / P _R format or G,
HD digital video signals of B and R formats are used, but as a next-generation HDTV system,
Frame rate 60Hz or 60 / 1.001H
z (in the present application, each of these is referred to as 60 Hz), each frame image is divided into the first and second frames.
Are sequentially with scanning is formed without being divided into fields, Y, P _B / P _R format or G, B, a system using a HD digital video signal of R format has been proposed. Are sequentially with scanning, Y, P _B / P _R format or G, B, HD digital video signal of the R form, referred to as HD digital video signal of progressive (Progressive) scheme.

Digital data forming a progressive HD digital video signal having a frame rate of 60 Hz is based on SMPTE (Society of Motion Pilot) in the United States.
Standards established by the Society for Motion Picture and Television Engineers (CMP): Standardization of the format by SMPTE 247M. Such SMPTE
In the format standardized by 247M, in addition to the frame rate: 60 Hz, the number of effective data samples per line: 1920 samples, the number of effective lines per frame: 1080 lines, and the sampling frequency: 14
8.5MHz or 148.5 / 1.001MHz
(In the present application, any of these is 148.5 MHz
That. ), The number of quantization bits: 8 bits, 10 bits, and the like. Then, the parallel data interface, Y, if the P _B / P _R format is 8 bits × 2 = 16 bits or 10 bits × 2 = 20 bits, G, B, when the R form, 8 bits × 3 = 24
Bits or 10 bits × 3 = 30 bits.

In digital data forming such a digital video signal having a quantization bit number of 8 bits or 10 bits, a code that is not used to represent video signal information is determined as a prohibition code. I have. For example, when the quantization bit number is 8 bits,
The prohibition codes are represented in hexadecimal notation 00h and FFh (subscript h
Is a hexadecimal number), that is, 0000 0000
When the number of quantization bits is 10 bits, the prohibition code is 000h in hexadecimal notation.
００003h and 3FCh〜3FFh, ie, 00 0000 0
000-00 00000011 and 11 1111 1100-11 1111 11
11

The Note, Y, if the P _B / P _R format, P _B data sequence and P _R data sequence of each of the sampling frequency is 1/2 of the sampling frequency of the Y data sequence. Is put below, if necessary, Y, and P _B / P _R format 4: 2: represented as 2 format. In the case of the G, B, and R formats, the sampling frequencies of the G data sequence, the B data sequence, and the R data sequence are the same. In the following, the G, B, and R formats are referred to as 4: 4: 4 formats as necessary.

In addition to such an HD digital video signal, for example, a moving image of a movie projected through a film of 24 frames per second (24 frames / second) can be realized with the same image quality as an image by an HDTV system. In addition, a progressive digital video signal has been proposed. Hereinafter, such a digital video signal is referred to as D
-Called Cinema signal.

The D-Cinema signal can be called, for example, a progressive digital video signal having a frame rate of 24 Hz or 24 / 1.001 Hz (in the present application, each of these is referred to as 24 Hz). -The frame rate of the Cinema signal is not limited to 24 Hz, but is 25 Hz, 30 Hz.
Hz, 50 Hz, 60 Hz, etc. are also conceivable. Frame rates of 24Hz, 25Hz, 30Hz, 50Hz, 60
The format of digital data forming a digital video signal having a frequency of, for example, Hz is standardized by SMPTE 247M. The number of valid data samples per line: 1920 samples, the number of valid lines per frame:
1080 lines, sampling frequency: 74.25 MH
z or 74.25 / 1.001 MHz (both are referred to as 74.25 MHz in the present application) or 148.5 MHz, the number of quantization bits: 8 bits or 10 bits, and the like. When the parallel data interface is in 4: 2: 2 format, 8 bits × 2 = 16 bits or 10 bits × 2
= 20 bits, and in the 4: 4: 4 format, 8 bits × 3 = 24 bits or 10 bits × 3 = 30 bits.

Under these circumstances, D-Cinema
For digital data forming a signal, for example, in order to further improve the resolution of an image reproduced based on the signal, the number of quantization bits is increased to 8 bits or more than 10 bits, for example, 12 bits, 14 bits, 1
It is becoming desirable to use 6 bits or the like. However, in the current standards for digital data forming digital video signals including SMPTE 247M and the like, the number of quantization bits is set to 8 bits or 10 bits.
Although the standardization of bits is planned,
The number of quantization bits exceeding 8 bits or 10 bits, for example, 12 bits, 14 bits, 16 bits, etc., is not standardized.

Further, the number of quantization bits is, for example, 12
D-Ci with 14 bits or 16 bits
There is a problem associated with the transmission of digital data forming a nema signal. That is, in transmitting digital data forming a digital video signal, serial transmission which is converted into serial data and transmitted is desired. For digital data that constitutes a digital video signal, HD SDI (High Definition) based on the BTA S-004
(Serial Digital Interface) is only standardized for transmission using other types of digital data,
For example, 4: 4: 4 where the number of quantization bits is 10 bits
Serial transmission of digital data forming a digital video signal of a format and digital data forming a digital video signal having a quantization bit number exceeding 10 bits is not standardized.

Such a D-Cinema signal is obtained, for example, from a video camera which forms an image signal by performing an imaging operation, and is provided with a video tape recorder (VTR) which records the signal and reproduces it as necessary. It is supplied to the signal recording / reproducing unit.

When an image is captured by a video camera and a video signal is recorded and reproduced from the video camera by a signal recording / reproducing unit, for example, when broadcast program information is recorded by a television broadcast station or the like, generally, a plurality of broadcast program information are recorded. Is used, and a camera unit is configured by a plurality of video cameras. Then, video signals obtained from each of the plurality of video cameras constituting the camera unit are sent to the signal recording / reproducing unit.

When images are taken by a plurality of video cameras in the camera section, it is necessary for a person who operates each of the video cameras (a cameraman) to know the imaging conditions of other video cameras. A reproduced image based on a video signal obtained from another video camera can be obtained on an image monitor provided in the video camera. Therefore, the video signal obtained from each video camera and sent to the signal recording / reproducing unit is subjected to a predetermined treatment in the signal recording / reproducing unit, and the camera unit composed of a plurality of video cameras from the signal recording / reproducing unit Supplied to

As described above, the video signal supplied to the camera unit composed of a plurality of video cameras is used for reproducing an image on an image monitor provided for each video camera in the camera unit. It is not required that the reproduced image based on the image is extremely high in quality.
Therefore, such a video signal is obtained by subjecting a video signal obtained from another video camera to, for example, a compression process, and has a limited transmission capacity and is easily transmitted.
Hereinafter, this video signal is referred to as a return video signal.

As described above, between the camera section and the signal recording / reproducing section, the video signal obtained from each of the plurality of video cameras in the camera section is transmitted to, for example, a signal recording / reproducing section having a VTR. At the same time, a return video signal on which predetermined processing has been performed is transmitted from the signal recording / reproducing unit to the camera unit. Will be The return video signal is, for example, plural.

When the video signal obtained from each of the plurality of video cameras constituting the camera section is a D-Cinema signal which is a digital video signal as described above, the return video signal is also a digital signal, that is, a digital signal. This is a digital return video signal. Each of the D-Cinema signal and the digital return video signal is converted into serial digital data when transmitted.

When bidirectionally transmitting a D-Cinema signal and a digital return video signal obtained from each of a plurality of video cameras constituting the camera unit between the camera unit and the signal recording / reproducing unit, Cin
It is considered that each of the digital data forming the ema signal and the digital data forming the digital return video signal is converted into an optical signal and transmitted through an optical signal transmission cable having a large transmission signal capacity and excellent transmission efficiency. Can be In this case, a so-called optical fiber is used as an optical signal transmission cable for connecting the camera unit and the signal recording / reproducing unit.

The optical fiber forming such an optical signal transmission cable is, for example, a quartz single mode fiber (silica SMF). This quartz SMF is
For example, the core diameter is 10 μm, and the clad diameter is 125 μm.
m has one propagation mode, and has a feature that the transmission frequency band is wide and the propagation loss can be suppressed low. Therefore, it is suitable for use in high-speed, long-distance communication using optical signals, and is suitable for transmitting optical signals based on digital video signals obtained from a video camera.

The quartz-based SMF causes, for example, attenuation of an optical signal in accordance with the attenuation characteristics shown in FIG.
Causes dispersion of the optical signal according to the dispersion characteristic shown in FIG. The dispersion of an optical signal refers to the spread of the frequency spectrum of the optical signal and the spread of the propagation time or waveform distortion of the optical signal caused by the material and structure of the optical fiber. In the attenuation characteristic shown in FIG. 36, the attenuation has a minimum value with respect to light having a wavelength of approximately 1.3 μm and light having a wavelength of approximately 1.55 μm. In the dispersion characteristics shown in FIG. 37, the dispersion of light having a wavelength of about 1.3 μm is minimized.

[0025]

As described above, each of the digital data forming the D-Cinema signal and the digital data forming the digital return video signal obtained from each of the plurality of video cameras constituting the camera section. Is converted into an optical signal, and when the two-way transmission is performed between the camera unit and the signal recording / reproducing unit using the optical signal transmission cable, a plurality of optical signals are transmitted between the camera unit and the signal recording / reproducing unit. It will be used for bidirectional transmission. Therefore, according to the conventional data transmission method,
For serial transmission of D-Cinema signal,
Since the Cinema signal has to be divided into a plurality of signal channels and transmitted, a large number of optical signal transmission cables need to be arranged in parallel between the camera unit and the signal recording / reproducing unit. As a result, a large space for cable installation is required and the cost is increased.

Therefore, a plurality of optical signals obtained by converting the digital data forming the D-Cinema signal and the digital data forming the digital return video signal obtained from each of the plurality of video cameras constituting the camera section are converted. What is desired is a data transmission system that can efficiently perform bidirectional transmission using an optical signal transmission cable between a camera unit and a signal recording / reproducing unit in order to minimize the number of optical signal transmission cables. But
Conventionally, such a data transmission system has not been found.

[0027] In view of the above, the invention described in the claims of the present application uses, for example, an optical signal transmission cable to convert a plurality of optical signals based on a plurality of serial digital data into, for example, a common optical signal. The signal transmission cable can be transmitted bidirectionally, and thus, for example, can be obtained from each of a plurality of video cameras constituting a camera unit.
D-Cinem with 10 or more quantization bits
The optical signal transmission cable between the camera unit and the signal recording / reproducing unit for a plurality of optical signals obtained by converting each of the digital data forming the a signal and the digital data forming the digital return video signal When applied to two-way transmission using, the two-way transmission,
Provided is a data transmission method that can be performed efficiently in order to minimize the number of optical signal transmission cables, and a data transmission device used for implementing the method.

[0028]

According to the data transmission method of the present invention, the frame rate is set to 24 Hz, 25 Hz or 30 Hz. The number of effective lines in each frame is set to 1080 lines, the number of effective data samples in each line is set to 1920 samples, and a digital video signal having a quantization bit number of 12, 14, or 16 bits is formed. 12-bit, 14 24-bit formed with a parallel arrangement of the bit or 16-bit word sequence data and by the Y data sequence and the P _B / P _R data series, the 28-bit or 32-bit parallel data, Y data sequence and P each 12 bits constituting each of the _B / P _R data sequence, 14 bits verses Performs a process of dividing a 16-bit word into upper 10 bits and lower 2 bits, 4 bits or 6 bits, and outputs first word string data based on the divided upper 10 bits, and the divided lower 2 bits,
Second based on 4 bits or 6 bits and auxiliary bits
Is formed. And obtaining first and second serial data based on the first and second word string data, respectively, converting the first serial data into a first optical signal having a first center wavelength, The second serial data is converted into a second optical signal having a second central wavelength different from the first central wavelength, and the first optical signal and the second optical signal are multiplexed to form a multiplexed optical signal. And transmits it to the optical signal transmission cable to transmit it from one end to the other end, and converts the third serial data into a third signal different from each of the first and second center wavelengths. A multiplexed optical signal is converted to a third optical signal having a center wavelength, sent to an optical signal transmission cable, transmitted from the other end to one end, and transmitted to the other end of the optical signal transmission cable. To reproduce the first and second serial data based on the Third, based on the third optical signal transmitted at one end of the cable
Plays back serial data.

In the data transmission method according to any one of claims 8 to 14 of the present application, the frame rate is set to 24 Hz,
25 Hz or 30 Hz, the number of effective lines in each frame is set to 1080 lines, the number of effective data samples in each line is set to 1920 samples, and a digital video signal having a quantization bit number of 10 bits is formed. The 30-bit parallel data formed by the parallel arrangement of the G data sequence, the B data sequence, and the R data sequence as the column data are added to the 10-bit words constituting each of the G data sequence, the B data sequence, and the R data sequence. Is divided into a first word group including a 10-bit word forming a G data sequence and a part of a 10-bit word forming each of a B data sequence and an R data sequence, and a 10-bit word forming an auxiliary data sequence. Another 10-bit word constituting each of the B data sequence and the R data sequence Allocated to a second word group including bets, subjected to a treatment to obtain a word sequence data based on each of the first and second word groups, first and second
Is formed. Then, first and second serial data based on the first and second word string data, respectively, are obtained.
According to the same method as in the case of the data transmission method according to any one of claims 1 to 7 in the claims, the signal is converted into a plurality of optical signals and transmitted through an optical signal transmission cable; The plurality of transmitted optical signals are derived from the optical signal transmission cable, and the first, second, and third serial data based on the plurality of derived optical signals are reproduced.

Claim 15 in the claims of the present application
In the data transmission method according to any one of the first to twenty-first aspects, the frame rate is set to 24H.
z, 25 Hz or 30 Hz, the number of effective lines in each frame is set to 1080, the number of effective data samples in each line is set to 1920, and a digital video signal having a quantization bit number of 12 bits is formed. Each of the G data sequence, the B data sequence, and the R data sequence is converted into 36-bit parallel data formed by parallel arrangement of the G data sequence, the B data sequence, and the R data sequence, which are bit word sequence data. The bit word is divided into upper 10 bits and lower 2 bits, and a plurality of upper 1 bits divided from the G data sequence.
Word string data based on 0 bits and a part of a plurality of upper 10 bits divided from each of the B data series and the R data series, and a plurality of upper 10 bits divided from each of the B data series and the R data series And a process of obtaining word string data based on a plurality of lower 2 bits and auxiliary bits divided from the G data series, the B data series, and the R data series, and performing the first and second processing. Form word string data. Then, first and second serial data based on the first and second word string data, respectively, are obtained, and the first and second serial data are obtained by combining the first and second serial data with each other. In the same manner as in the case of the data transmission method according to the invention described in any of the above, the optical signal is converted into a plurality of optical signals and transmitted through the optical signal transmission cable, and the transmitted optical signals are transmitted from the optical signal transmission cable. The first, second, and third serial data based on the plurality of derived optical signals are reproduced.

Claim 22 in the claims of the present application
In the data transmission method according to the invention according to any one of claims to 28, the frame rate is set to 50 Hz.
Or 60 Hz, the number of effective lines in each frame is set to 1080, the number of effective data samples in each line is set to 1920, and the number of quantization bits is set to 12, 14, or 16 bits to form a digital video signal. each 12 bits, 24 bits formed with a parallel arrangement of the by Y data sequence and P _B / P _R data sequence with 14-bit or 16-bit word sequence data, the 28-bit or 32-bit parallel data, each line unit Each time, a process of sequentially assigning the data to the first group and the second group is performed, and the first word string data based on the data forming the first group and the second word sequence data based on the data forming the second group are processed. Is formed. Further, each of 12 bits constituting the Y data sequence and P _B / P _R data sequence in the first word sequence data, a 14-bit or 16-bit words, the upper 10 bits and lower 2 bits, to a 4-bit or 6-bit A division process is performed to form third word string data based on the divided upper 10 bits and fourth word string data based on the divided lower 2 bits, 4 bits or 6 bits, and auxiliary bits. as well as, the 12 bits constituting the Y data sequence and P _B / P _R data sequence in the second word sequence data, 14
A bit or 16-bit word is divided into upper 10 bits and lower 2 bits, 4 bits, or 6 bits, and a fifth or fifth bit based on the divided upper 10 bits is processed.
And the sixth word string data based on the divided lower 2 bits, 4 bits or 6 bits and the auxiliary bits. And such third, fourth,
Obtaining first, second, third and fourth serial data based on the fifth and sixth word string data, respectively, and converting the first serial data into a first optical signal having a first center wavelength; Then, the second serial data is converted into a second optical signal having a second central wavelength different from the first central wavelength, and the first optical signal and the second optical signal are multiplexed. Obtaining a first multiplexed optical signal, transmitting it to a first optical signal transmission cable and transmitting it from one end thereof to the other end, and further converting third serial data to a first optical signal having a third center wavelength; And converting the fourth serial data into a fourth optical signal having a fourth central wavelength different from the third central wavelength, and converting the third optical signal into a fourth optical signal. To obtain a second multiplexed optical signal, which is sent to a second optical signal transmission cable and from one end to the other end thereof. And converting the fifth serial data into a fifth optical signal having a fifth center wavelength different from each of the first and second center wavelengths, and converting the fifth serial data into a first optical signal transmission. The first serial signal is transmitted from the other end to the first end of the first optical signal transmission cable, and the sixth serial data is converted to a sixth optical signal different from the third and fourth center wavelengths. The optical signal is converted into a sixth optical signal having a center wavelength, transmitted to a second optical signal transmission cable, and transmitted from the other end to the one end of the second optical signal transmission cable. Then, while reproducing the first and second serial data based on the first multiplexed optical signal transmitted to the other end of the first optical signal transmission cable, the first and second serial data are transmitted to one end of the first optical signal transmission cable. Fifth serial data based on the obtained fifth optical signal is reproduced, and third and fourth serial data based on the second multiplexed optical signal transmitted to the other end of the second optical signal transmission cable are reproduced. While reproducing data, the controller reproduces sixth serial data based on the sixth optical signal transmitted to one end of the second optical signal transmission cable.

Claim 29 in the claims of the present application
In the data transmission method according to the invention as set forth in any one of claims to 35, the frame rate is set to 50 Hz.
Alternatively, it is set to 60 Hz, the number of effective lines in each frame is set to 1080, the number of effective data samples in each line is set to 1920, and a digital video signal having a quantization bit number of 10 bits is formed. The 30-bit parallel data formed by the parallel arrangement of the G data sequence, the B data sequence, and the R data sequence as data are subjected to a process of sequentially allocating the first group and the second group for each line portion. Thus, first word string data based on the data forming the first group and second word string data based on the data forming the second group are formed. Further, each 10-bit word forming each of the G data sequence, the B data sequence, and the R data sequence in the first word string data is replaced with a 10-bit word forming the G data sequence and each of the B data sequence and the R data sequence. A first word group including a part of the 10-bit word forming the auxiliary data sequence, and another part of the 10-bit word forming each of the B data sequence and the R data sequence. And performing a process of obtaining word string data based on each of the first and second word groups to form third and fourth word string data and a second word group. Each of the 10-bit words constituting each of the G data sequence, the B data sequence, and the R data sequence in the word string data is divided into 10 bits forming the G data sequence. A third word group including a set word, a part of a 10-bit word constituting each of the B data sequence and the R data sequence, and a 10-bit word, a B data sequence and an R data sequence forming an auxiliary data sequence. The fourth and fifth word groups are divided into a fourth word group including another part of the constituent 10-bit word, and a process of obtaining word string data based on each of the third and fourth word groups is performed. Form word string data. And the third
The first to fourth serial data based on the first to sixth word string data, respectively, and the fifth and sixth serial data are obtained by combining the first to fourth serial data with each other. In the same manner as in the case of the data transmission method according to the invention described in (1), the optical signal is converted into a plurality of optical signals and transmitted through an optical signal transmission cable, and the transmitted optical signals are derived from the optical signal transmission cable. In this way, the first to sixth serial data based on the plurality of derived optical signals are reproduced.

Claim 36 in the claims of the present application
In the data transmission method according to the invention described in any one of claims to 42, the frame rate is set to 50 Hz.
Or, it is set to 60 Hz, the number of effective lines in each frame is set to 1080, the number of effective data samples in each line is set to 1920, and a digital video signal having a quantization bit number of 12 bits is formed. The 36-bit parallel data formed by the parallel arrangement of the G data sequence, the B data sequence, and the R data sequence as data are subjected to a process of sequentially allocating the first group and the second group for each line portion. Thus, first word string data based on the data forming the first group and second word string data based on the data forming the second group are formed. Further, each 12-bit word constituting each of the G data sequence, the B data sequence, and the R data sequence in the first word string data is divided into upper 10 bits and lower 2 bits, and is divided from the G signal data sequence. Multiple upper 10 bits and B
Word string data based on a part of a plurality of upper 10 bits divided from each of the data sequence and the R data sequence;
Another part of the plurality of upper 10 bits divided from each of the B data series and the R data series, and the lower two bits divided from the G data series, the B data series, and the R data series.
A process of obtaining word string data based on bits and auxiliary bits is performed to form third and fourth word string data, and a G data series, a B data series, and an R data series in the second word string data Are divided into upper 10 bits and lower 2 bits, and a plurality of upper 10 bits are divided from the G data sequence.
Word string data based on bits and a part of a plurality of upper 10 bits divided from each of the B data sequence and the R data sequence, and a plurality of upper 10 bits divided from each of the B data sequence and the R data sequence. A process for obtaining word string data based on a plurality of lower two bits and auxiliary bits divided from the G data series, the B data series, and the R data series with the other part to perform fifth and sixth word processing Form column data. Then, the first to fourth serial data based on the third to sixth word string data are obtained, and these and the fifth and sixth serial data are obtained, according to claims 22 to 28 in the claims. In the same manner as in the case of the data transmission method according to any one of the inventions described above, the optical signal is converted into a plurality of optical signals and transmitted through the optical signal transmission cable, and the transmitted optical signals are transmitted through the optical signal transmission cable. , And reproduces the first to sixth serial data based on the plurality of derived optical signals.

Further, the data transmission apparatus according to any one of claims 43 to 46 in the claims of the present application has a frame rate of 24H.
z, 25 Hz or 30 Hz, the number of effective lines in each frame is set to 1080, the number of effective data samples in each line is set to 1920, and the number of quantization bits is set to 12, 14, or 16 bits. form, each 12-bit, 24-bit, which is formed with a parallel arrangement of the by Y data sequence and P _B / P _R data sequence with 14-bit or 16-bit word sequence data, 28 bits or 3
Y data series and P _B / P to 2-bit parallel data
Each of the 12-bit, 14-bit or 16-bit words constituting each of the _R data sequences is divided into upper 10 bits and lower 2 bits.
A first word string data based on the upper 10 bits obtained by performing a process of dividing the data into bits, 4 bits or 6 bits, and based on the divided lower 2 bits, 4 bits or 6 bits and the auxiliary bits A data processing unit for forming the second word string data, a parallel / serial (P / S) conversion unit for obtaining first and second serial data based on the first and second word string data, respectively, A first optical signal forming unit for converting one serial data into a first optical signal having a first center wavelength; and a second serial data having a second center wavelength different from the first center wavelength. A second optical signal forming unit that converts the signal into a second optical signal; and a multiplexed optical signal obtained by multiplexing the first optical signal and the second optical signal, and sending the multiplexed optical signal to an optical signal transmission cable. The first transmission from one end to the other end Of the optical signal processing unit, a third converting the third optical signal having a third center wavelength of which is different from the respective third first and second center wavelength of the serial data above
An optical signal forming unit, a second optical signal processing unit for transmitting a third optical signal to the optical signal transmission cable and transmitting the third optical signal from the other end to the one end, and transmitting the third optical signal to the other end of the optical signal transmission cable A first data reproducing unit for reproducing the first and second serial data based on the multiplexed optical signal, and a third serial data based on the third optical signal transmitted to one end of the optical signal transmission cable. And a second data reproducing unit for reproducing.

Claim 47 in the claims of the present application
The data transmission apparatus according to any one of claims to 50, wherein the frame rate is 24 Hz, 25H
z or 30 Hz, the number of effective lines in each frame is set to 1080, the number of effective data samples in each line is set to 1920, and a digital video signal having a quantization bit number of 10 bits is formed. G data series and B as column data
The 30-bit parallel data formed by the parallel arrangement of the data sequence and the R data sequence includes 10-bit words forming each of the G data sequence, the B data sequence, and the R data sequence, and 10 bits forming the G data sequence. 10 that constitutes each of the word, the B data sequence, and the R data sequence
A first group of words comprising a portion of a bit word;
A first word group and a second word group each including a 10-bit word forming an auxiliary data sequence and another part of the 10-bit word forming each of the B data sequence and the R data sequence; And a data processing unit for forming first and second word string data by performing a process of obtaining word string data based on each of the above, and any one of claims 43 to 46 in the claims. P / S conversion unit, first optical signal forming unit, second optical signal forming unit, first optical signal processing unit, and third optical signal forming unit similar to those provided in the data transmission apparatus according to the invention. , A second optical signal processing unit, a first data reproducing unit, and a second data reproducing unit.

Claim 51 in the claims of the present application
The data transmission device according to any one of claims to 54, wherein the frame rate is 24 Hz, 25H
z or 30 Hz, the number of effective lines in each frame is set to 1080 lines, the number of effective data samples in each line is set to 1920 samples, and a digital video signal having a quantization bit number of 12 bits is formed. G data series and B as column data
In the 36-bit parallel data formed by the parallel arrangement of the data sequence and the R data sequence, each of the 12-bit words constituting each of the G data sequence, the B data sequence, and the R data sequence is divided into upper 10 bits and lower 2 bits. Word string data based on a plurality of upper 10 bits divided from the G data sequence and a part of the plurality of upper 10 bits divided from each of the B data sequence and the R data sequence; Another part of the plurality of upper 10 bits divided from each of the R data series, and the G data series,
A data processing unit that performs processing for obtaining word string data based on a plurality of lower two bits and auxiliary bits divided from the B data series and the R data series to form first and second word string data; A P / S conversion unit, a first optical signal forming unit, a second optical signal forming unit, and a P / S conversion unit similar to those provided in the data transmission apparatus according to any one of claims 43 to 46 in the claims. An optical signal forming unit, a first optical signal processing unit, a third optical signal forming unit, a second optical signal processing unit, a first data reproducing unit, and a second data reproducing unit are configured. .

Claim 55 in the claims of the present application
The data transmission apparatus according to any one of claims to 58, wherein the frame rate is 50 Hz or 60 Hz, and the number of effective lines in each frame is 10 or 10 Hz.
80 lines, the number of effective data samples in each line is set to 1920 samples, and a digital video signal having a quantization bit number of 12, 14, or 16 bits is formed, each of which is a 12, 14, or 16-bit word. Y data series and P
_B / P 2 which is formed with a parallel arrangement of the _R data series
A first word sequence based on the data forming the first group by subjecting 4-bit, 28-bit or 32-bit parallel data to a process of sequentially allocating the first group and the second group for each line portion data and to form a second word sequence data based on the data constituting the second group, the 12 bits constituting the Y data sequence and P _B / P _R data sequence in the first word sequence data, 14 Bits or 16-bit words in the top 10
A bit word is divided into lower 2 bits, 4 bits or 6 bits, a third word string data based on the divided upper 10 bits, and the divided lower 2 bits, 4 bits or 6 bits are supplemented. and forming a fourth word sequence data based on the bit, the 12 bits constituting the Y data sequence and P _B / P _R data sequence in the second word sequence data, 14 bits or 1
The 6-bit word is divided into upper 10 bits and lower 2 bits, 4
A fifth word string data based on the divided upper 10 bits and a sixth word string data based on the divided lower 2 bits, 4 bits or 6 bits, and the auxiliary bits. A data processing unit for forming word string data, and P / S conversion for obtaining first, second, third and fourth serial data based on the third, fourth, fifth and sixth word string data, respectively Unit, a first optical signal forming unit that converts the first serial data into a first optical signal having a first center wavelength, and converts the second serial data into a first optical signal.
A second optical signal forming unit that converts the second optical signal into a second optical signal having a second central wavelength different from the first optical signal, and multiplexes the first optical signal and the second optical signal to form a first optical signal. A first optical signal processing unit for obtaining a multiplexed optical signal, transmitting the multiplexed optical signal to a first optical signal transmission cable, and transmitting the multiplexed optical signal from one end to the other end, and transmitting the third serial data to a third center wavelength A third optical signal forming unit for converting the fourth serial data into a third optical signal having a fourth central wavelength different from the third central wavelength.
A fourth optical signal forming unit for converting the optical signal into a third optical signal and a third optical signal and a fourth optical signal to obtain a second multiplexed optical signal;
A second optical signal processing unit for transmitting the signal to the second optical signal transmission cable and transmitting the signal from one end to the other end, and transmitting the fifth serial data to the first and second center wavelengths, respectively. Is a fifth optical signal forming unit that converts the fifth optical signal into a fifth optical signal having a different fifth center wavelength, and sends the fifth optical signal to the first optical signal transmission cable and transmits it to one end thereof. A third optical signal processing unit, and a sixth optical signal forming unit that converts the sixth serial data into a sixth optical signal having a sixth center wavelength different from each of the third and fourth center wavelengths A fourth optical signal processing unit for transmitting the sixth optical signal to the second optical signal transmission cable and transmitting the sixth optical signal from the other end to the one end, and a fourth optical signal processing unit for transmitting the sixth optical signal to the other end of the first optical signal transmission cable. A first method for reproducing first and second serial data based on the transmitted first multiplexed optical signal;
A second data reproducing unit that reproduces fifth serial data based on a fifth optical signal transmitted to one end of the first optical signal transmission cable; and a second optical signal transmission cable A third data reproducing unit that reproduces third and fourth serial data based on the second multiplexed optical signal transmitted to the other end of the second optical signal transmission cable; And a fourth data reproducing unit that reproduces sixth serial data based on the sixth optical signal.

Claim 59 in the claims of the present application
The data transmission device according to any one of claims to 62, wherein the frame rate is 50 Hz or 60 Hz, and the number of effective lines in each frame is 10 Hz.
80 lines, the number of effective data samples in each line is set to 1920 samples, a digital video signal having a quantization bit number of 10 bits is formed, and a G data sequence and a B data sequence each having 10-bit word string data. To the 30-bit parallel data formed by the parallel arrangement of the data group and the R data series, which are sequentially sorted into a first group and a second group for each line portion, to obtain data constituting the first group. Forming first word string data based on the first word string data and second word string data based on the data forming the second group, each of the G data series, the B data series, and the R data series in the first word string data. Are composed of a 10-bit word forming a G data sequence and each of a B data sequence and an R data sequence. A first word group including a part of the 10-bit word to be formed, and another part of the 10-bit word forming the auxiliary data sequence and the 10-bit word forming each of the B data sequence and the R data sequence. Second
And performs a process of obtaining word string data based on each of the first and second word groups to form third and fourth word string data, The 10-bit words forming each of the G data series, the B data series, and the R data series are defined as 10-bit words forming the G data series and the 10-bit words forming each of the B data series and the R data series.
A third word group comprising a portion of the bit word;
A third word group including a 10-bit word forming the auxiliary data sequence and a fourth word group including another part of the 10-bit word forming each of the B data sequence and the R data sequence; And a data processing unit for forming fifth and sixth word string data by performing processing for obtaining word string data based on each of the above, and any one of claims 55 to 58 in the claims. P / S conversion unit, first optical signal forming unit, second optical signal forming unit, first optical signal processing unit, and third optical signal forming unit similar to those provided in the data transmission apparatus according to the invention. Unit, a fourth optical signal forming unit, a second optical signal processing unit, a fifth optical signal forming unit, a third optical signal processing unit, a sixth optical signal forming unit, a fourth optical signal processing unit, A first data reproducing unit, a second data reproducing unit, and a third data reproducing unit; Constructed and a playback unit and the fourth data reproduction unit.

Claim 63 of the claims of the present application
The data transmission apparatus according to any one of claims to 66, wherein the frame rate is 50 Hz or 60 Hz, and the number of effective lines in each frame is 10 Hz.
80 lines, the number of valid data samples in each line is set to 1920 samples, a digital video signal having a quantization bit number of 12 bits is formed, and a G data sequence and a B data sequence each having 12-bit word string data. And the R data series are processed in such a manner that the 36-bit parallel data formed in a parallel arrangement is sequentially divided into a first group and a second group for each line portion, so that data constituting the first group is processed. Forming a first word string data based on the first word string data and a second word string data based on the data forming the second group, each of the G data series, the B data series, and the R data series in the first word string data. Is divided into upper 10 bits and lower 2 bits, and a plurality of upper 1 bits divided from the G data sequence are divided. Word string data based on bits and a part of a plurality of upper 10 bits divided from each of the B data sequence and the R data sequence, and a plurality of upper 10 bits divided from each of the B data sequence and the R data sequence. A third part and a fourth part are obtained by performing a process of obtaining word string data based on a plurality of lower two bits and auxiliary bits divided from the G data series, the B data series, and the R data series, with another part. Column data, the G data sequence, the B data sequence and the R data sequence in the second word sequence data.
Each 12-bit word constituting each of the data sequences is divided into upper 10 bits and lower 2 bits, and a plurality of upper 10 bits divided from the G data sequence and each of the B data sequence and the R data sequence are divided. Word string data based on a part of the plurality of upper 10 bits and a plurality of upper 10 bits divided from each of the B data sequence and the R data sequence.
The other part of the bits and a process of obtaining word string data based on a plurality of lower 2 bits and auxiliary bits divided from the G data series, the B data series, and the R data series are performed. And a P / S converter similar to that provided in the data transmission apparatus according to any one of claims 55 to 58 in the claims. , A first optical signal forming unit, a second optical signal forming unit, a first optical signal processing unit,
A third optical signal forming section, a fourth optical signal forming section, a second optical signal processing section, a fifth optical signal forming section, a third optical signal processing section,
A sixth optical signal forming unit, a fourth optical signal processing unit, a first data reproducing unit, a second data reproducing unit, a third data reproducing unit, and a fourth data reproducing unit are configured. You.

The data transmission method according to any one of claims 1 to 21 in the claims of the present invention as described above, or any one of claims 43 to 54 In the data transmission device according to the described invention, the frame rate is set to 24 Hz, 2 Hz.
5 Hz or 30 Hz, the number of valid lines in each frame is set to 1080, the number of valid data samples in each line is set to 1920, and the number of quantization bits is set to 10, 12, 14, or 16 bits. : The first and second serial data based on digital data forming a digital video signal of the 2: 2 format or 4: 4: 4 format, and third serial data or third and fourth serial data different from them. Is converted into an optical signal, and bidirectionally transmitted between one end and the other end of the common optical signal transmission cable.

Then, at the transmission destination of each optical signal through the common optical signal transmission cable, the first and second serial data and the third serial data or the third and fourth serial data are reproduced respectively. .

In this case, the bidirectional transmission of the first and second serial data and the third serial data or the third and fourth serial data is performed, for example, by serial transmission of a digital video signal in accordance with HD SDI. Can be performed by utilizing the existing circuit components used for the above.

The data transmission method according to any one of claims 22 to 42 in the claims of the present invention as described above, or any one of claims 55 to 66 In the data transmission device according to the invention described in
Hz or 60 Hz, the number of effective lines in each frame is set to 1080, the number of effective data samples in each line is set to 1920 samples, and the number of quantization bits is set to 10, 12, 14, or 1 bit.
First, second, third, and fourth serial data based on digital data forming a digital video signal of 4: 2: 2 format or 4: 4: 4 format having 6 bits, and a fifth serial data different from them. And the sixth serial data or the fifth,
The sixth, seventh, and eighth serial data are converted into optical signals and bidirectionally transmitted using two optical signal transmission cables.

Then, at the transmission destination of each optical signal through each of the two optical signal transmission cables, the first, second, third
And the fourth serial data and the fifth and sixth serial data or the fifth, sixth, seventh and eighth serial data are reproduced, respectively.

In such a case, the first, second, third and fourth
The bidirectional transmission of the serial data of the first and fifth and sixth serial data or the fifth, sixth, seventh and eighth serial data is used, for example, for serial transmission of digital video signals in accordance with HD SDI. This can be done using existing circuit components.

The data transmission method or the data transmission apparatus according to the invention described in the claims of the present application is capable of calculating, for example, the number of quantization bits obtained from each of a plurality of video cameras constituting a camera unit. Between the camera unit and the signal recording / reproducing unit, a plurality of optical signals obtained by converting digital data forming a D-Cinema signal having 10 bits or more and digital data forming a digital return video signal. When applied to bidirectional transmission using an optical signal transmission cable in
The bidirectional transmission using an optical signal transmission cable between the camera unit and the signal recording / reproducing unit of such a plurality of optical signals,
Utilizing existing circuit components, the number of optical signal transmission cables can be minimized, which can be performed efficiently and cost reduction can be effectively achieved.

[0047]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a schematic diagram showing a first embodiment of the present invention.
Claims 43, 44, 47, and 4 in the claims of the present application, in which the example of the data transmission method according to the invention described in any one of claims and 21 is implemented.
8, an example of a data transmission device according to the invention described in claim 51 or 52 will be described.

In the example shown in FIG.
0 and the signal recording / reproducing unit 11
The bidirectional transmission of digital data forming a ma signal and digital data forming a digital return video signal is performed. Data DVX is transmitted from the camera unit 10 and supplied to the data processing unit 12.

In FIG. 38, the data DVX corresponds to the data DA12, DA14, DA16, DB10 and DB12.
24 Hz, 25 Hz
Or 30 Hz, and the sampling frequency is 74.2.
5 MHz, the number of valid data samples in each line is 1
920 samples, number of active lines in each frame is 1
D-Ci in a 4: 2: 2 format or a 4: 4: 4 format in which the number of quantization bits is set to 080 lines and the number of quantization bits is set to 10, 12, 14, or 16 bits.
This is one of the digital data forming the nema signal.

Data DVX shown in FIG. 38 is digital data shown in FIG. 38 as digital data forming a D-Cinema signal of 4: 2: 2 format having a quantization bit number of 12 bits.
12, the data DA12 has a word transmission rate of 74.25 Mbps as shown in FIG.
And a Y data sequence of 12-bit word string data and a word transmission rate of 74.25 MBps.
And P _B / P _R data sequence which is a bit word sequence data are obtained are parallel multiplexed with Moto synchronous frame synchronization and line were taken, the word transmission rate 74.2
The data is supplied to the data processing unit 12 as 24-bit word string data of 5 MBps.

In the data processing section 12, the 12-bit words YD0, YD0,
YD1, YD2, YD3,..., And P _B / P
12-bit words PbD0, P forming the _R data sequence
rD0, PbD1, PrD1, PbD2, PrD2,.
.. Represent the upper 10 bits Y0; 2 to Y0; 1
1, Y1; 2 to Y1; 11, Y2; 2 to Y2; 11, Y
3; 2 to Y3; 11,..., And Pb0;
Pb0; 11, Pr0; 2 to Pr0; 11, Pb1; 2
-Pb1; 11, Pr1; 2-Pr1; 11, Pb2;
2 to Pb2; 11, Pr2; 2 to Pr2; 11,.
.. and lower two bits Y0; 0 to Y0; 1, Y1;
Y1; 1, Y2; 0 to Y2; 1, Y3; 0 to Y3; 1,
..., and Pb0; 0 to Pb0; 1, Pr0;
0 to Pr0; 1, Pb1; 0 to Pb1; 1, Pr1; 0
~ Pr1; 1, Pb2; 0-Pb2; 1, Pr2; 0
A process of dividing into Pr2;

Subsequently, a sequence of the divided upper 10 bits:
Y0; 2 to Y0; 11, Y1; 2 to Y1; 11, Y2;
2-Y2; 11, Y3; 2-Y3; 11, ...
And a sequence of the divided upper 10 bits: Pb0;
0; 11, Pr0; 2 to Pr0; 11, Pb1;
b1; 11, Pr1; 2 to Pr1; 11, Pb2; 2
Pb2; 11, Pr2; 2 to Pr2; 11, ...
And a word transmission rate of 7
20-bit word string data DA at 4.25 MBps
12A is a link A based on the divided upper 10 bits.
And formed as shown in FIG. 2B.

At the same time, the divided lower two bits Y
0; 0 to Y0; 1, Y1; 0 to Y1; 1, Y2;
2; 1, Y3; 0 to Y3; 1,... And 8-bit auxiliary bits α0, α1, α2, α3,. 1 + α0, Y
1; 0 to Y1, 1 + α1, Y2; 0 to Y2, 1 + α2
Y3; 0 to Y3; 1 + α3,..., And the divided lower two bits Pb0; 0 to Pb0; 1, Pr
0; 0 to Pr0; 1, Pb1; 0 to Pb1; 1, Pr
1, 0-Pr1; 1, Pb2; 0-Pb2; 1, Pr
2; 0 to Pr2; 1,..., And 8 auxiliary bits β0, β1, β2, β3, β4, β5,.
, And 10 bits Pb0; 0 to Pb0; 1 + β
0, Pr0; 0 to Pr0; 1 + β1, Pb1; 0 to Pb
1; 1 + β2, Pr1; 0 to Pr1; 1 + β3, Pb
2; 0 to Pb2; 1 + β4, Pr2; 0 to Pr2; 1+
β5, ... And a 10-bit string: Y
0; 0 to Y0; 1 + α0, Y1; 0 to Y1; 1 + α1,
Y2; 0 to Y2; 1 + α2, Y3; 0 to Y3; 1 + α
..., 10-bit string: Pb0; 0 to Pb
0; 1 + β0, Pr0; 0 to Pr0; 1 + β1, Pb
1; 0 to Pb1, 1 + β2, Pr1; 0 to Pr1, 1+
β3, Pb2; 0 to Pb2; 1 + β4, Pr2;
The word transmission rate is 74.25 MBps, which is obtained by parallel multiplexing of r2; 1 + β5,.
The bit word string data DA12B is divided into the lower two
A link B based on bits is formed as shown in FIG. 2C. That is, the word transmission rate is set to 74.25M.
DA12 which is 24-bit word string data at Bps
Are 20-bit word string data DA12A and DA12B, each of which has a word transmission rate of 74.25 MBps.
Is converted into the two-system word string data.

Data DVX shown in FIG. 38 is digital data DA1 shown in FIG. 38 as digital data forming a digital video signal of 4: 2: 2 format having a quantization bit number of 14 bits.
If it is 4, or if it is data DA16 shown in FIG. 38 as digital data forming a digital video signal of 4: 2: 2 format in which the quantization bit number is 16 bits, the data DA14 has a word transmission rate. 7
As a 28-bit word string data of 4.25 MBps, the data DA 16 has a word transmission rate of 74.
It is 32-bit word string data of 25 MBps. Then, similarly to the case where the data DVX is the data DA12, each has the word transmission rate of 74.25M.
Bps, 20-bit word string data DA14A and DA14B, or each has a word transmission rate of 7
20-bit word string data DA at 4.25 MBps
16A and DA16B are formed.

However, in such a case, when the data DVX is the data DA12, each one of the Y data series
Respectively for each 12-bit word constituting the 2-bit word and P _B / P _R data sequence, instead of dividing into upper 10 bits and lower 2 bits, the data DVX is DA14
, Each of the 14-bit words constituting the Y data sequence and each of the 14-bit words constituting the P _B / P _R data sequence is divided into upper 10 bits and lower 4 bits, and If DVX is data DA16 is respectively of each 16-bit word constituting each 16-bit word and P _B / P _R data sequence constituting the Y data sequence is divided into an upper 10 bits and lower 6 bits . Thereby, the word transmission rate is reduced to 74.25 MBp.
Data DA1 which is 28-bit word string data to be s
4 are 20-bit word string data DA14A and DA14 each having a word transmission rate of 74.25 MBps.
B is converted into two-system word string data, and data DA16, which is 32-bit word string data having a word transmission rate of 74.25 MBps, is converted to 20-bit word string data each having a word transmission rate of 74.25 MBps. It is converted into word string data of two systems of DA16A and DA16B.

Data DVX is a data DB1 shown in FIG. 38 as digital data forming a digital video signal of 4: 4: 4 format with a quantization bit number of 10 bits.
When it is 0, as shown in FIG. 3, the data DB 10 sets the G data sequence as a 10-bit word string data having a word transmission rate of 74.25 MBps and a word transmission rate of 74.25 MBps. The B data sequence as 10-bit word sequence data and the R data sequence as 10-bit word sequence data with a word transmission rate of 74.25 MBps are parallel-multiplexed under frame synchronization and line synchronization. can get,
The data is supplied to the data processing unit 12 as 30-bit word string data having a word transmission rate of 74.25 MBps.

In the data processing unit 12, as shown in FIG. 4, the 10-bit words GD0, GD1, GD2, GD3, ...
.., A 10-bit word BD0 constituting a B data sequence
BD1, BD2, BD3,... And 10-bit words RD0, RD1, RD constituting an R data sequence
, RD3,..., 10-bit words AD0, AD1, AD2, AD3,.
... is added. Then, as shown in FIG. 4 by being divided by a thick solid line, 10-bit words GD0, GD1, GD2, GD3,.
... And every other 10-bit word BD0, BD2, BD4, BD in the B data sequence
... And every other 10-bit word RD0, RD2, RD of the 10-bit words forming the R data sequence
, Which form the auxiliary data sequence, and the 10-bit words AD0, AD1, AD2, AD3,. Every other bit word BD1, BD3, BD5, BD7,...
, And every other one of the 10-bit words RD1, RD3, RD5, RD constituting the R data sequence
.. Are divided into 10-bit word groups 2 including 7,.

Subsequently, based on the 10-bit word group 1, the word transmission rate is set to 74.25 MBps2.
The 0-bit word string data DB 10A is formed as a link A as shown in FIG. At the same time, based on the 10-bit word group 2, 20-bit word string data DB 10B having a word transmission rate of 74.25 MBps is formed as a link B as shown in FIG. That is, the word transmission rate is set to 74.2.
DB which is 30-bit word string data of 5 MBps
10 each with a word transmission rate of 74.25 Mbps
20-bit word string data DB10A and DB1
This is converted into word string data of two systems of 0B.

Data DVX is a data DB1 shown in FIG. 38 as digital data forming a 4: 4: 4 format digital video signal having a quantization bit number of 12 bits.
2, the DB 12 sets the word transmission rate to 74.25 MBps as shown in FIG.
The G data sequence is bit word sequence data, the B data sequence is 12 bit word sequence data having a word transmission rate of 74.25 MBps, and the 12 bit word sequence data is 74.25 MBps word transmission rate. The obtained R data sequence is supplied to the data processing unit 12 as 36-bit word string data having a word transmission rate of 74.25 MBps obtained by performing parallel multiplexing under frame synchronization and line synchronization.

In the data processing unit 12, the data DB 12 supplied as shown in FIG.
12-bit words GD0, GD constituting a data sequence
, GD2, GD3,..., 12-bit words BD0, BD1, BD2, and BD forming a B data sequence
,... And 12-bit words RD0, RD1, RD2, RD3,.
· Each of the upper 10 bits G0; 2 to G0; 11, G
1; 2 to G1; 11, G2; 2 to G2; 11, G3; 2
... G3; 11, ..., B0; 2-B0; 11, B
1; 2 to B1; 11, B2; 2 to B2; 11, B3; 2
... B3; 11, ..., and R0; 2-R0; 1
1, R1; 2 to R1; 11, R2; 2 to R2; 11, R
3; 2 to R3; 11,...
0; 0 to G0; 1, G1; 0 to G1; 1, G2;
2; 1, G3; 0 to G3; 1, ..., B0;
B0; 1, B1; 0 to B1; 1, B2; 0 to B2; 1,
B3; 0 to B3; 1,..., And R0;
0; 1, R1; 0 to R1; 1, R2; 0 to R2; 1, R
3; 0 to R3; 1,...

Subsequently, the divided lower two bits G0; 0
0 to B0; 1 and R0; 0 to R0;
1 is bit-multiplexed, and 6-bit GBR0 (0 to 1) is divided into the lower 2 bits G1; 0 to G1; 1, B1;
B1; 1 and R1; 0 to R1;
2; 1, B2; 0 to B2; 1 and R2; 0 to R2; 1 are bit-multiplexed, and 6-bit GBR2 (0 to 1)
Bit G3; 0 to G3; 1, B3; 0 to B3; 1 and R
3; 0 to R3; 1 are bit-multiplexed and 6-bit GBR3
(0-1) are formed. Further, 6-bit GBR0 (0 to 1), GBR1 (0 to 1), GBR2
(0-1), GBR3 (0-1),..., 4-bit auxiliary bits γ0, γ1, γ2, γ3,.
, And 10-bit GBR0 (0 to 1) + γ0,
GBR1 (0-1) + γ1, GBR2 (0-1) + γ
2, GBR3 (0 to 1) + γ3,...

Next, the divided upper 10 bits G0; 2
~ G0; 11, G1; 2-G1; 11, G2; 2-G
2; 11, G3; 2 to G3; 11,..., B0;
2-B0; 11, B1; 2-B1; 11, B2; 2-B
2; 11, B3; 2 to B3; 11, ..., and
R0; 2 to R0; 11, R1; 2 to R1; 11, R2;
... Are assigned to group 1 and group 2, and 10 bits GBR0 (0 to 1) + γ0, GBR are assigned to group 2.
1 (0-1) + γ1, GBR2 (0-1) + γ2, GB
By adding R3 (0 to 1) + γ3,..., A 10-bit word group 1 and a 10-bit word group 2 are obtained as separated by the thick solid line in FIG.

Then, the word transmission rate based on the 10-bit word group 1 shown in FIG.
Bps, the 20-bit word string data DB12A is
As link A, 20-bit word string data DB12B having a word transmission rate of 74.25 MBps based on the 10-bit word group 2 shown in FIG. , Are formed as shown in FIG. That is, DB12, which is 36-bit word string data with a word transmission rate of 74.25 MBps, is stored in a DB with a word transmission rate of 7
20-bit word string data DB with 4.25 MBps
12A and 20-bit word string data DB 12B having a word transmission rate of 74.25 MBps are converted into two systems of word string data.

The data processing unit 12 sets a set of 20-bit word string data DA12A and DA12B with a word transmission rate of 74.25 MBps obtained as described above, D
A set of A14A and DA14B, DA16A and DA16
B, DB10A and DB10B, and DB1
One of the set of 2A and DB12B is derived as a set of 20-bit word string data DPA (20) and DPB (20).

The 20-bit word string data DPA (20) having a word transmission rate of 74.25 MBps sent from the data processing unit 12 is supplied to the P / S conversion unit 13. The P / S conversion unit 13 performs P / S conversion on the 20-bit word string data DPA (20) to increase the bit transmission rate based on the 20-bit word string data DPA (20) to 74.25 MBps × 20 = 1.485Gbp
s is formed, and the serial data DSA is supplied to an electro-optical converter (E / O converter) 14. The E / O conversion unit 14 forms an optical signal forming unit, performs electro-optical conversion processing on the serial data DSA, sets the bit transmission rate to 1.485 Gbps, and sets the center wavelength, which is, for example, approximately 1.55 μm, The formed optical signal OSA is formed.

An example of the E / O conversion unit 14 is, as shown in FIG.
And a 5 μm band distributed feedback (DFB) laser diode 16. Then, the serial data DSA from the P / S conversion unit 13 is supplied to the laser driving unit 15, and a laser driving signal SLD corresponding to the serial data DSA is obtained from the laser driving unit 15, and is 1.55 μm.
It is supplied to the m-band DFB laser diode 16.

1.55 μm band DFB laser diode 1
6 oscillates in a single wavelength mode and emits a laser beam having a center wavelength of about 1.55 μm, for example, as shown in FIG.
It is about ° C. 1. The laser drive signal SLD is supplied.
The 55 μm band DFB laser diode 16 emits a 1.55 μm band laser beam having a center wavelength of about 1.55 μm in a state modulated by the laser drive signal SLD. An optical signal OSA having a center wavelength of about 1.55 μm based on the data DSA has a bit transmission rate of 1.485 Gbp.
s. This optical signal OSA is supplied to the multiplexing unit 17.

On the other hand, the 20-bit word string data DPB (20) having a word transmission rate of 74.25 MBps sent from the data processing unit 12 is supplied to the P / S conversion unit 18. The P / S converter 18 performs P / S conversion on the 20-bit word string data DPB (20),
The bit transmission rate based on the 20-bit word string data DPB (20) is set to 74.25 MBps × 20 = 1.485
The serial data DSB of Gbps is formed, and the serial data DSB is supplied to the E / O converter 19. E
The / O conversion unit 19 forms an optical signal forming unit, and performs electro-optical conversion processing on the serial data DSB to set the bit transmission rate to 1.485 Gbps, for example, approximately 1.48.
An optical signal OSB having a center wavelength of μm is formed.

One example of the E / O conversion unit 19 is, as shown in FIG.
And a DFB laser diode 21 in the 48 μm band. Then, the serial data DSB from the P / S conversion unit 18 is supplied to the laser driving unit 20, and a laser driving signal SLD corresponding to the serial data DSB is obtained from the laser driving unit 20. It is supplied to the laser diode 21.

1.48 μm band DFB laser diode 2
1 oscillates in a single-wavelength mode and emits a laser beam having a center wavelength of about 1.48 μm, for example, as shown in FIG.
It is about ° C. 1. The laser drive signal SLD is supplied.
The 48 μm band DFB laser diode 21 emits a 1.48 μm band laser beam having a center wavelength of approximately 1.48 μm in a state modulated by the laser drive signal SLD. An optical signal OSB having a center wavelength of about 1.48 μm based on DSB is obtained with a bit transmission rate of 1.485 Gbps. This optical signal OSB is also transmitted to the multiplexing unit 17.
Supplied to

The multiplexing section 17 is formed by a directional coupler type or a dielectric multilayer type wavelength division multiplexing (WDM) coupler or the like. For example, the multiplexing unit 17 formed by the directional coupler type WDM coupler is configured as an example is equivalently shown in FIG.

In the configuration shown in FIG. 13, E / O
The optical signal OSA having a center wavelength of about 1.55 μm from the conversion unit 14 is guided to the directional coupling unit 26 through the optical connector 25 and the optical fiber connected thereto, and the center wavelength from the E / O conversion unit 19 is changed. About 1.48 μm
Is guided to the directional coupler 26 through the optical connector 27 and the optical fiber connected thereto. The directional coupling part 26 is a part where the optical fiber that guides light through the optical connector 25 and the optical fiber that guides light through the optical connector 27 are interconnected. In the directional coupling unit 26, an optical signal OSA having a center wavelength of about 1.55 μm and an optical signal OSA having a center wavelength of about 1.48 μm
B are multiplexed and multiplexed, and a multiplexed optical signal OZ is transmitted.
Then, the multiplexed optical signal OZ obtained in the directional coupler 26 is derived through an optical connector 28 connected to an optical fiber constituting the directional coupler 26. Thus, the multiplexed optical signal OZ obtained from the multiplexing unit 17 is guided to the bidirectional WDM coupler 30.

The bidirectional WDM coupler 30 is, for example,
It has a configuration represented by equivalent block connections as shown in FIG. In the equivalent block connection shown in FIG. 14, a dielectric multilayer film portion 31 is provided, and an input / output connected to one end of the dielectric multilayer film portion 31 via an optical fiber and an optical connector 32. End 33
And an input / output end 35 connected via an optical fiber and an optical connector 34. The optical fiber and the optical connector 3 are connected to the other end of the dielectric multilayer film portion 31.
An input / output terminal 37 connected through the input / output terminal 6 is provided.

The optical signal OSA having a center wavelength of about 1.55 μm from the multiplexing unit 17 and a center wavelength of about 1.4
A multiplexed optical signal OZ formed by multiplexing an optical signal OSB of 8 μm is guided from the input / output end 33 to the dielectric multilayer 31 through the optical connector 32 and the optical fiber. Then, the multiplexed optical signal OZ through the dielectric multilayer 31 is led to the input / output terminal 37 through the optical fiber and the optical connector 36. The multiplexed optical signal OZ guided to the input / output terminal 37 in this manner is transmitted from the bidirectional WDM coupler 30 and guided to the optical connector 40. The multiplexing unit 17 and the bidirectional WDM coupler 30 form an optical signal processing unit.

The optical connector 40 connects the bidirectional WDM coupler 30 and one end of the optical signal transmission cable 41. Thereby, the multiplexed optical signal OZ from the bidirectional WDM coupler 30 is transmitted to the optical signal transmission cable 41 through the optical connector 40 from one end thereof. The optical signal transmission cable 41 is formed of, for example, quartz-based SMF.

At the other end of the optical signal transmission cable 41, an optical connector 43 for connecting the optical signal transmission cable 41 to the bidirectional WDM coupler 42 is provided. Thereby, the optical connector 40
The multiplexed optical signal OZ transmitted from one end to the optical signal transmission cable 41 through the optical signal transmission cable 41 is transmitted from one end to the other end of the optical signal transmission cable 41, and the bidirectional WDM coupler is transmitted through the optical connector 43 from the other end. It is led to 42.

The bidirectional WDM coupler 42 is, for example,
It has a configuration represented by equivalent block connections as shown in FIG. In the equivalent block connection shown in FIG. 15, a dielectric multilayer part 45 is provided, and an input / output connected to one end of the dielectric multilayer part 45 via an optical fiber and an optical connector 46 is provided. End 47
And an input / output end 49 connected via an optical fiber and an optical connector 48. An optical fiber and an optical connector 5 are provided on the other end side of the dielectric multilayer film portion 45.
An input / output terminal 51 connected via the “0” is provided.

Then, the multiplexed optical signal OZ from the optical connector 43 is guided from the input / output end 51 to the dielectric multilayer part 45 through the optical connector 50 and the optical fiber. And
The multiplexed optical signal OZ through the dielectric multilayer part 45 is led to an input / output terminal 49 through an optical fiber and an optical connector 48. The multiplexed optical signal OZ guided to the input / output terminal 49 in this manner is transmitted from the bidirectional WDM coupler 42 and guided to the demultiplexer 52.

The branching section 52 is formed by a directional coupler type or a dielectric multilayer type WDM coupler. For example, when the branching section 52 is formed by a directional coupler type WDM coupler, FIG. It is configured as equivalently shown.

In the configuration shown in FIG. 16, the multiplexed optical signal OZ from the bidirectional WDM coupler 42 is guided to the directional coupler 54 through the optical connector 53 and the optical fiber connected thereto. The directional coupling portion 54 is a portion where an optical fiber for guiding light through the optical connector 53 branches into two optical fibers. One of the two optical fibers forming the directional coupling unit 54 is an optical signal OSA having a center wavelength of about 1.55 μm and a bit transmission rate of 1.485 Gbps in the multiplexed optical signal OZ.
The other one of the multiplexed optical signals OZ communicates with an optical signal OSB having a center wavelength of approximately 1.48 μm and a bit transmission rate of 1.485 Gbps. Then, the optical signal OSA is transmitted to the directional coupling unit 54.
The optical signal OSB is led out through an optical connector 55 connected to one of the two optical fibers forming the directional coupling portion 54, and the optical connector 56 connected to the other of the two optical fibers forming the directional coupling portion 54. Is derived through

The optical signal OSA derived through the optical connector 55 and the optical signal O derived through the optical connector 56
The SB is transmitted from the demultiplexing unit 52 and is output from the photoelectric conversion unit (O /
E conversion unit) 57 and 58, respectively. Bidirectional WD
The M coupler 42 and the demultiplexing unit 52 form an optical signal processing unit.

In the O / E converter 57, the bit transmission rate is set to 1.485 Gbps, and the center wavelength is set to about 1.5.
The optical signal OSA having a thickness of 5 μm is subjected to photoelectric conversion processing, and a bit transmission rate based on the optical signal OSA is set to 1.485 G.
It reproduces the serial data DSA at bps and supplies it to the serial / parallel (S / P) converter 59. S
In the / P converter 59, the bit transmission rate is set to 1.4.
S / P conversion for forming 20-bit parallel data is performed on the serial data DSA at 85 Gbps, and the word transmission rate is 1.485 Gbps / 20 = 74.25.
20-bit word string data DPA (2 MBps)
0) and supplies it to the data reproduction processing unit 60.

The O / E converter 58 performs a photoelectric conversion process on an optical signal OSB having a bit transmission rate of 1.485 Gbps and a center wavelength of about 1.48 μm, and is based on the optical signal OSB. , The bit transmission rate is 1.4
The serial data DSB of 85 Gbps is reproduced and supplied to the S / P converter 61. The S / P converter 61 performs S / P conversion for forming 20-bit parallel data on the serial data DSB having the bit transmission rate of 1.485 Gbps, and sets the word transmission rate to 1.485 Gbps / 20 = It reproduces the 20-bit word string data DPB (20) of 74.25 MBps and supplies it to the data reproduction processing unit 60.

In the data reproduction processing section 60, the 20-bit word string data DPA (20) and DPB (20)
, The data processing unit 12 performs data processing reverse to the data processing performed on the data DVX.
The data DVX based on B (20) is reproduced and supplied to the signal recording / reproducing unit 11. The data DVX reproduced in this manner corresponds to the data DA12, DA12 shown in FIG.
DA14, DA16, DB10 or DB12. In the signal recording / reproducing unit 11, for example, data DVX is recorded by a built-in VTR.

The signal recording / reproducing section 11 is also provided with a return video signal forming section. The return video signal forming section has a word transmission rate of 74.25 Mbps
The digital data DPM, which is a 20-bit word string data and forms a return video signal, is transmitted. Thereby, the digital data DPM obtained from the signal recording / reproducing unit 11 is supplied to the P / S converter 65.

In the P / S converter 65, the digital data DPM is subjected to P / S conversion to form serial data DSM having a bit transmission rate of 74.25 MBps × 20 = 1.485 Gbps. It is supplied to the E / O converter 66. The E / O conversion unit 66 forms an optical signal forming unit, performs an electro-optical conversion process on the serial data DSM, sets the bit transmission rate to 1.485 Gbps,
For example, an optical signal OSM having a center wavelength of about 1.3 μm is formed.

An example of the E / O conversion unit 66 is, for example, as shown in FIG.
A 3 μm band FP laser diode 68 is provided. Then, the serial data D from the P / S converter 65
The SM is supplied to the laser driver 67 and the laser driver 6
7 to the laser drive signal S corresponding to the serial data DSM
An LD is obtained and supplied to the 1.3 μm band FP laser diode 68.

1.3 μm band FP laser diode 68
Oscillates in a multi-wavelength mode, and emits a laser beam having a wavelength spectrum of about 8 nm with a center wavelength of about 1.3 μm as shown in FIG. 18, for example. For example, it is about 0.4 nm / ° C. The 1.3 μm band FP laser diode 68 supplied with the laser drive signal SLD has a center wavelength of approximately 1.3 μm.
A 3 μm-band laser beam is emitted in a state modulated by the laser drive signal SLD, whereby the optical signal OSM having a center wavelength of approximately 1.3 μm based on the serial data DSM is transmitted from the E / O converter 66 to a bit. The transmission rate is obtained under the condition that the transmission rate is 1.485 Gbps. This optical signal OSM is guided to the bidirectional WDM coupler 42.

For example, in the bidirectional WDM coupler 42 configured as shown in FIG.
M is guided to the dielectric multilayer film part 45 through the input / output end 47 which is one of the two input / output ends 47 and 49 on one end side thereof, passes through the dielectric multilayer film part 45, and reaches the other end. Through the input / output end 51 on the side.

The optical signal OSM that has passed through the bidirectional WDM coupler 42 is guided to the optical connector 43. And
The optical signal OSM is transmitted from the other end to the optical signal transmission cable 41 through the optical connector 43, transmitted from the other end to the one end of the optical signal transmission cable 41, and bidirectionally transmitted from the one end through the optical connector 40. To the sex WDM coupler 30.

For example, in the bidirectional WDM coupler 30 configured as shown in FIG.
M is the input / output terminal 3 on the other end side of the dielectric multilayer film portion 31.
7, through the dielectric multilayer part 31, and through one of the two input / output terminals 33 and 35 on one end side. The optical signal OSM that has passed through the bidirectional WDM coupler 30 is O / E
It is led to the conversion unit 69.

In the O / E converter 69, the bit transmission rate is set to 1.485 Gbps, and the center wavelength is set to about 1.3.
The optical signal OSM of μm is subjected to photoelectric conversion processing, and the bit transmission rate based on the optical signal OSM is set to 1.485 Gb.
The serial data DSM having ps is reproduced. And
The reproduced serial data DSM is sent to the S / P converter 70.
Supplied to

In S / P conversion section 70, serial data DS having a bit transmission rate of 1.485 Gbps
M is subjected to S / P conversion processing for obtaining 20-bit parallel data, and the word transmission rate is 1.485 Gbps / 20 = 74.25 MBps based on the serial data DSM.
Digital data DP forming a return video signal
M is reproduced and supplied to the camera unit 10.

In the example shown in FIG. 1 as described above, the data DVX obtained from the camera unit 10 is
DA12, DA14, DA16, DB shown in FIG.
10 and DB 12, converted into a multiplexed optical signal OZ, transmitted from the camera unit 10 to the signal recording and reproducing unit 11 through the optical signal transmission cable 41, and The digital data DPM forming the return video signal transmitted from the optical signal OSM is converted into an optical signal OSM, transmitted from the signal recording / reproducing unit 11 to the camera unit 10 via the optical signal transmission cable 41, and one end of the optical signal transmission cable 41. And the other end, bidirectional transmission of the multiplexed optical signal OZ and the optical signal OSM is performed.

The data D obtained from the camera unit 10
The conversion of the VX into the multiplexed optical signal OZ and the conversion of the digital data DPM forming the return video signal into the optical signal OSM are performed, for example, by using existing circuit components used for serial transmission of the digital video signal according to HD SDI. Can be performed by using.

FIG. 19 shows claims 4, 6, 7, 11, and 1 in the claims of the present application.
Claim 45, Claim in the claims of the present application, wherein the example of the data transmission method according to the invention described in any of Claims 3, 14, 18, 20, or 21 is implemented. 49 shows an example of a data transmission apparatus according to the invention as set forth in claim 49 or claim 53.

The example shown in FIG. 19 has a portion configured in the same manner as the example shown in FIG. 1. In FIG. Alternatively, the data is shown with the same reference numerals as in FIG. 1, and redundant description thereof will be omitted.

The example shown in FIG. 19 also performs bidirectional transmission between the digital data forming the D-Cinema signal and the digital data forming the digital return video signal between the camera section 10 and the signal recording / reproducing section 11. The camera unit 10 outputs data DV.
X is sent out and supplied to the data processing unit 12. The data DVX is the data DA12, DA14, DA16, DB10 and DB12 in FIG.
24 Hz, 25 Hz
Or 30 Hz, and the sampling frequency is 74.2.
5 MHz, the number of valid data samples in each line is 1
920 samples, number of active lines in each frame is 1
D-Ci in a 4: 2: 2 format or a 4: 4: 4 format in which the number of quantization bits is set to 080 lines and the number of quantization bits is set to 10, 12, 14, or 16 bits.
This is one of the digital data forming the nema signal.

In the example shown in FIG. 19, E
The bit transmission rate obtained from the / O converter 14 is 1.
An optical signal OSA having a wavelength of 485 Gbps and a center wavelength of about 1.55 μm is guided to the bidirectional WDM coupler 71. Similar to the bidirectional WDM coupler 30 in the example shown in FIG. 1, the bidirectional WDM coupler 71 has, for example, two input / output terminals at one end and one input / output terminal at the other end. Is provided with a dielectric multi-layered film portion provided with a. And bidirectional WDM
In the coupler 71, the optical signal OSA from the E / O conversion unit 14 is guided to the dielectric multilayer film unit through one of the two input / output terminals on one end side, and the dielectric multilayer film unit Then, it is led out through one input / output terminal on the other end side. The optical signal OSA that has passed through the bidirectional WDM coupler 71 is guided to the multiplexing unit 72.

The serial data DSB obtained from the P / S converter 18 is supplied to an E / O converter 73 forming an optical signal forming unit. The E / O converter 73 is, for example, similar to the E / O converter 66 in the example shown in FIG.
An optical signal OSB having a center wavelength of about 1.3 μm based on the serial data DSB is generated by subjecting the serial data DSB to an electro-optical conversion process, and a bit transmission rate of 1.485 Gbp
It is transmitted under the condition of s. Then, the optical signal OSB transmitted from the E / O conversion unit 73 is guided to the multiplexing unit 72.

The multiplexing section 72 has the same configuration as that of the multiplexing section 17 in the example shown in FIG. An optical signal OSA having a transmission rate of 1.485 Gbps and a center wavelength of about 1.55 μm and an optical signal OSA having a bit transmission rate of 1.485 Gbps and a center wavelength of about 1.3 μm are multiplexed and multiplexed. Multiplexed optical signal O
Z is obtained and sent to the optical signal transmission cable 41 through the optical connector 40 from one end thereof. Bidirectional W
The DM coupler 71 and the multiplexing unit 72 form an optical signal processing unit.

The optical signal transmission cable 41 is transmitted from one end to the other end, and the multiplexed optical signal OZ through the optical connector 43 is guided to the splitter 74. The demultiplexing unit 74 has the same configuration as the demultiplexing unit 52 in the example shown in FIG. 1, but includes a dielectric multilayer film instead of the directional coupling unit. , The bit transmission rate is set to 1.485 Gbps, and the center wavelength is set to about 1.
An optical signal OSA having a wavelength of 55 μm and an optical signal OSB having a bit transmission rate of 1.485 Gbps and a center wavelength of approximately 1.3 μm are derived.

Optical signal OSA derived from demultiplexer 74
Is guided to the bidirectional DWM coupler 75. Similar to the bidirectional WDM coupler 42 in the example shown in FIG. 1, the bidirectional DWM coupler 75 has, for example, two input / output terminals at one end and one input / output terminal at the other end. Is provided with a dielectric multi-layered film portion provided with a. Then, in the bidirectional WDM coupler 75, the optical signal OSA from the branching unit 74 is guided to the dielectric multilayer film unit through one input / output terminal on the other end side, and the dielectric multilayer film unit Through one of the two input / output terminals on the one end side. Then, the optical signal OSA that has passed through the bidirectional WDM coupler 75 is
It is guided to the E conversion unit 57.

The optical signal O derived from the demultiplexer 74
The SB is guided to the O / E conversion unit 76. In the O / E conversion unit 76, the bit transmission rate is set to 1.485 Gbp.
s, the optical signal OSB having a center wavelength of about 1.3 μm is subjected to photoelectric conversion processing, and the serial data DSB having a bit transmission rate of 1.485 Gbps based on the optical signal OSB is reproduced, and is subjected to S / P It is supplied to the conversion unit 61.

Further, in the example shown in FIG.
The digital data DPM from the signal recording / reproducing unit 11
The serial data DSM obtained from the P / S converter 65 that performs the / S conversion process is supplied to the E / O converter 77.
The E / O conversion section 77 is configured to control the E / O in the example shown in FIG.
Like the conversion unit 19, for example, it is configured to include a 1.48 μm band DFB laser diode, and
To an optical signal OSM having a center wavelength of approximately 1.48 μm based on the serial data DSM.
The transmission is performed at a bit transmission rate of 1.485 Gbps. Then, the optical signal OSM transmitted from the E / O converter 77 is guided to the bidirectional WDM coupler 75.

In the bidirectional WDM coupler 75,
An optical signal OSM having a bit transmission rate of 1.485 Gbps and a center wavelength of about 1.48 μm is guided to the dielectric multilayer film through one of the two input / output terminals on one end side thereof, and Through the multilayer part, it is led out through one input / output end on the other end.

The optical signal OSM that has passed through the bidirectional WDM coupler 75 is guided to the optical connector 43 through the branching unit 74, and is transmitted through the optical connector 43 to the optical signal transmission cable 4.
1 is sent from the other end. The demultiplexing unit 74 and the bidirectional WDM coupler 75 form an optical signal processing unit.

The optical signal transmission cable 41 is transmitted from the other end to the one end, and the optical signal O
SM is transmitted to the bidirectional WDM coupler 7 through the multiplexing unit 72.
It is led to 1. In the bidirectional WDM coupler 71, an optical signal OSM having a bit transmission rate of 1.485 Gbps and a center wavelength of about 1.48 μm is supplied to one input / output terminal on the other end side of the dielectric multilayer film portion. Through the dielectric multilayer part, and then through the other of the two input / output terminals on one end thereof. Then, the optical signal OSM that has passed through the bidirectional WDM coupler 71 is
It is led to the E conversion unit 78.

In the O / E converter 78, the bit transmission rate is set to 1.485 Gbps, and the center wavelength is set to approximately 1.4.
The optical signal OSM having a thickness of 8 μm is subjected to photoelectric conversion processing, and the bit transmission rate based on the optical signal OSM is set to 1.485 G.
The serial data DSM at bps is reproduced. Then, the reproduced serial data DSM is supplied to the S / P converter 70.

The rest is the same as the example shown in FIG.

In the example shown in FIG. 19 as described above, the data DVX obtained from the camera unit 10 is
DA12, DA14, DA16, DB shown in FIG.
10 and DB 12, converted into a multiplexed optical signal OZ, transmitted from the camera unit 10 to the signal recording and reproducing unit 11 through the optical signal transmission cable 41, and The digital data DPM forming the return video signal transmitted from the optical signal OSM is converted into an optical signal OSM, transmitted from the signal recording / reproducing unit 11 to the camera unit 10 via the optical signal transmission cable 41, and one end of the optical signal transmission cable 41. And the other end, bidirectional transmission of the multiplexed optical signal OZ and the optical signal OSM is performed.

The data D obtained from the camera unit 10
The conversion of the VX into the multiplexed optical signal OZ and the conversion of the digital data DPM forming the return video signal into the optical signal OSM are performed, for example, by using existing circuit components used for serial transmission of the digital video signal according to HD SDI. Can be performed by using.

FIG. 20 shows claims 5 to 7 and claims 12 to 14 in the claims of the present application.
Claims, Claims 50 or 54 in the claims of the present application, wherein the example of the data transmission method according to the invention described in any one of Claims 19 to 21 is implemented. 1 shows an example of a data transmission device according to the invention described in (1).

The example shown in FIG. 20 has many parts configured similarly to the example shown in FIG. 19. In FIG. 20, blocks shown in FIG. 19, blocks corresponding to signals or data, and blocks shown in FIG. If the signal or data is
9 are denoted by the same reference numerals as in 9, and redundant description thereof will be omitted.

The example shown in FIG. 20 also performs bidirectional transmission between the digital data forming the D-Cinema signal and the digital data forming the digital return video signal between the camera section 10 and the signal recording / reproducing section 11. The camera unit 10 sends the data DV
X is sent out and supplied to the data processing unit 12. The data DVX is the data DA12, DA14, DA16, DB10 and DB12 in FIG.
24 Hz, 25 Hz
Or 30 Hz, and the sampling frequency is 74.2.
5 MHz, the number of valid data samples in each line is 1
920 samples, number of active lines in each frame is 1
D-Ci in a 4: 2: 2 format or a 4: 4: 4 format in which the number of quantization bits is set to 080 lines and the number of quantization bits is set to 10, 12, 14, or 16 bits.
This is one of the digital data forming the nema signal.

In the example shown in FIG. 20, E
The bit transmission rate obtained from the / O conversion unit 73 is 1.
An optical signal OSB having a wavelength of 485 Gbps and a center wavelength of approximately 1.3 μm is guided to the optical circulator 80.

The optical circulator 80 is an irreversible optical transmission passive component utilizing the Faraday effect of the magneto-optical crystal, and is used for optical signals in the 1.3 μm band. The optical circulator 80 is provided with two input / output terminals on one end side and one input / output terminal on the other end side. Then, the optical circulator 80
An optical signal supplied through one of the two input / output terminals on one end side is derived from the optical circulator 80 through one input / output terminal on the other end side,
An optical signal supplied to the optical circulator 80 through one input / output terminal at the other end is derived from the optical circulator 80 through the other of the two input / output terminals at the one end.

The bit transmission rate from the E / O converter 73 is 1.485 Gbps, and the center wavelength is approximately 1.3 μm.
The optical signal OSB is supplied to the optical circulator 80 through one of the two input / output terminals at one end thereof, and is thereby led out from the optical circulator 80 through one input / output terminal at the other end. . The optical signal OSB that has passed through the optical circulator 80 is guided to the multiplexing unit 72, where the bidirectional WDM coupler 7
1 is multiplexed with the optical signal OSA that has passed. Bidirectional WD
M coupler 71, multiplexing section 72, and optical circulator 80
Form an optical signal processing unit.

Further, the multiplexed optical signal OZ transmitted from one end to the other end of the optical signal transmission cable 41 is derived from the demultiplexer 74 guided through the optical connector 43. The bit transmission rate is 1.485 Gbps. The optical signal OSB having a center wavelength of about 1.3 μm is guided to the optical circulator 81. Similarly to the optical circulator 80, the optical circulator 81 is provided with two input / output terminals on one end and one input / output terminal on the other end. Then, the optical signal OSB from the demultiplexing unit 74 is supplied to the optical circulator 81 through one input / output terminal on the other end side. And is led to the O / E converter 76 to be subjected to photoelectric conversion processing in the O / E converter 76. The demultiplexing unit 74, the bidirectional WDM coupler 75, and the optical circulator 81 form an optical signal processing unit.

Further, in the example shown in FIG.
The return video signal forming unit provided in the signal recording / reproducing unit 11 is a digital data DPM1 and DPM2 forming two return video signals, each of which is 20-bit word string data having a word transmission rate of 74.25 MBps.
Is sent. The digital data DPM1 obtained from the signal recording / reproducing unit 11 is supplied to the P / S conversion unit 65, like the digital data DPM obtained from the signal recording / reproducing unit 11 in the example shown in FIG. Thereby, an optical signal OSM1 similar to the optical signal OSM in the example shown in FIG. 19 is obtained from the E / O conversion unit 77,
The OSM 1 is transmitted from the other end of the optical signal transmission cable 41 to one end via the optical connector 43.

On the other hand, the digital data DPM2 obtained from the signal recording / reproducing unit 11 is supplied to a P / S conversion unit 83 configured similarly to the P / S conversion unit 65. In the P / S converter 83, the digital data DPM2 is
Performs S conversion and increases the bit transmission rate to 74.25 MBps
× 20 = 1.485 Gbps serial data DS
M2 is formed and supplied to the E / O converter 84.
The E / O converter 84 has the same configuration as the E / O converter 77 and forms an optical signal forming unit.
The SM2 is subjected to electro-optical conversion processing to form an optical signal OSM2 having a bit transmission rate of 1.485 Gbps and a center wavelength of about 1.3 μm, for example. This optical signal OSM2 is guided to the optical circulator 81.

The bit transmission rate from the E / O converter 84 is set to 1.485 Gbps, and the center wavelength is set to about 1.3 μm.
The optical signal OSM2 is supplied to the optical circulator 81 through one of the two input / output terminals on one end thereof, and thereby is derived from the optical circulator 81 through one input / output terminal on the other end. . The optical signal OSM2 that has passed through the optical circulator 81 passes through the demultiplexer 74, and further passes through the optical connector 43, and the optical signal OSM1
At the same time, the signal is transmitted from the other end of the optical signal transmission cable 41 to one end.

The optical signals OSM1 and OSM2 transmitted through the optical signal transmission cable 41 from the other end to the one end and led out through the optical connector 40 are the same as those in FIG.
Similarly to the optical signal OSM in the example shown in FIG.
2 to the bidirectional WDM coupler 71,
The optical signal OSM2 is guided to the optical circulator 80 through the multiplexing unit 72.

Thus, the bidirectional WDM coupler 71
O / E changing saddle portion 78 to which optical signal OSM1 that has passed through is guided.
, The serial data DSM1 based on the optical signal OSM1 is obtained.
Digital data DPM1 forming a return video signal of 5 MBps is reproduced and supplied to the camera unit 10.

Further, the optical signal OSM2 through the multiplexing section 72
Is supplied to the optical circulator 80 through one input / output terminal on the other end side, and is thereby led out of the optical circulator 80 through the other of the two input / output terminals on the one end side thereof, and is subjected to O / E conversion. It is led to the section 85. O
The / E converter 85 sets the bit transmission rate to 1.4.
The optical signal OSM2 having 85 Gbps and a center wavelength of approximately 1.3 μm is subjected to photoelectric conversion processing to reproduce serial data DSM2 having a bit transmission rate of 1.485 Gbps based on the optical signal OSM2. Then, the reproduced serial data DSM2 is supplied to the S / P converter 86.

In S / P conversion section 86, serial data DS with bit transmission rate of 1.485 Gbps
M2 is subjected to S / P conversion processing for obtaining 20-bit parallel data, and the word transmission rate based on the serial data DSM2 is 1.485 Gbps / 20 = 74.25 MB.
The digital data DPM2 forming a return video signal of ps is reproduced and supplied to the camera unit 10.

The other points are the same as in the example shown in FIG.

In the example shown in FIG. 20 as described above, the data DVX obtained from the camera unit 10 is
DA12, DA14, DA16, DB shown in FIG.
10 and DB 12, converted into a multiplexed optical signal OZ, transmitted from the camera unit 10 to the signal recording and reproducing unit 11 through the optical signal transmission cable 41, and Digital data DPM1 and DP forming a return video signal transmitted from
M2 is converted into optical signals OSM1 and OSM2, transmitted from the signal recording / reproducing unit 11 to the camera unit 10 through the optical signal transmission cable 41, and between one end and the other end of the optical signal transmission cable 41. Bidirectional transmission of the multiplexed optical signal OZ and the optical signals OSM1 and OSM2 is performed.

The data D obtained from the camera unit 10
The conversion of the VX into the multiplexed optical signal OZ and the conversion of the digital data DPM1 and DPM2 forming the return video signal into the optical signals OSM1 and OSM2 are, for example, existing digital signals used for serial transmission according to HD SDI. This can be achieved by utilizing the circuit components to be performed.

FIGS. 21 and 22 show claims 22 to 24 and claim 27 in the claims of the present application.
To claim 31, from claim 34 to claim 38,
Claims 55, 56, and 5 in the claims of the present application, in which the example of the data transmission method according to any one of claims 41 and 42 is implemented.
An example of a data transmission apparatus according to the invention described in claim 9, claim 60, claim 63 or claim 64 will be described.

In the example shown in FIGS. 21 and 22, between the camera section 100 and the signal recording / reproducing section 101, the digital data forming the D-Cinema signal and the digital data forming the digital return video signal are mixed. It is assumed that bidirectional transmission is performed. Data DVXX is transmitted from the camera unit 100 and supplied to the data processing unit 102.

In FIG. 38, data DVXX is data DC12, DC14, DC16, DD10 and DD1.
2, the frame rate is 50 Hz or 60 Hz, and the sampling frequency is 148.5 MH.
z, the number of valid data samples in each line is 1920
Samples, the number of effective lines in each frame is 1080
Line, and the number of quantization bits is 10 bits, 12
Bits, 14 bits or 16 bits, 4:
D-Cinema in 2: 2 format or 4: 4: 4 format
This is one of digital data that forms a signal.

The data DVXX has a quantization bit number of 12
Data DC shown in FIG. 38 as digital data forming a digital video signal of 4: 2: 2 format having bits
In the case of the data DC12, as shown in FIG.
s, a 12-bit word string data Y data sequence and a word transmission rate of 148.5 MBps
Bit and word sequence data and have been P _B / P _R data sequence is obtained is parallel multiplexed with Moto synchronous frame synchronization and line were taken, the word transmission rate 148.
The data is supplied to the data processing unit 102 as 24-bit word string data of 5 MBps.

In the data processing section 102, the data DC12 supplied as shown in FIG.
0, YD1, YD2, YD3,..., And P _B
/ P _R 12-bit Word PbD Constituting Data Series
0, PrD0, PbD1, PrD1, PbD2, PrD
.. Are assigned to Group 1 and Group 2 for each line unit. The word transmission rate is set to 148.5 MBps / 2 = 74.25 MBp based on the data of every other line of each of the Y data sequence and the P _B / P _R data sequence that make up group 1.
s is formed as the link A as shown in FIG. 23B, and the Y data series and P _B / P
_The word transmission rate is set to 148.5 MBps / 2 = based on the data of every other line in each of the _R data sequences.
24-bit word string data D of 74.25 MBps
C12B is formed as a link B as shown in FIG.

Next, as shown in FIG. 23B, for a 24-bit word string data DC12A having a word transmission rate of 74.25 MBps, 12-bit words YD0, YD1, YD2 and YD2 constituting a Y data sequence are obtained. YD
3, ..., and 12-bit word PbD0 constituting the P _B / P _R data sequence, prd0, PBD1, P
Each of rD1, PbD2, PrD2,... is represented by upper 10 bits Y0; 2 to Y0; 11, Y1;
11, Y2; 2 to Y2; 11, Y3; 2 to Y3; 11,
..., and Pb0; 2 to Pb0; 11, Pr
0; 2 to Pr0; 11, Pb1; 2 to Pb1; 11, P
r1; 2 to Pr1; 11, Pb2; 2 to Pb2; 11,
... And the lower two bits Y0; 0 to Y0; 1, Y1; 0 to Y1; 1, Y2;
~ Y2; 1, Y3; 0 to Y3; 1, ..., and
Pb0; 0 to Pb0; 1, Pr0; 0 to Pr0; 1, P
b1; 0 to Pb1; 1, Pr1; 0 to Pr1; 1, Pb
2; 0 to Pb2; 1, Pr2; 0 to Pr2;
··· Perform processing to divide into

Subsequently, a sequence of the divided upper 10 bits:
Y0; 2 to Y0; 11, Y1; 2 to Y1; 11, Y2;
2-Y2; 11, Y3; 2-Y3; 11, ...
And a sequence of the divided upper 10 bits: Pb0;
0; 11, Pr0; 2 to Pr0; 11, Pb1;
b1; 11, Pr1; 2 to Pr1; 11, Pb2; 2
Pb2; 11, Pr2; 2 to Pr2; 11, ...
And a word transmission rate of 7
20-bit word string data DC with 4.25 MBps
12A1 is formed as a link A-1 based on the divided upper 10 bits as shown in FIG.

At the same time, the divided lower two bits Y
0; 0 to Y0; 1, Y1; 0 to Y1; 1, Y2;
2; 1, Y3; 0 to Y3; 1,... And 8-bit auxiliary bits α0, α1, α2, α3,. 1 + α0, Y
1; 0 to Y1, 1 + α1, Y2; 0 to Y2, 1 + α2
Y3; 0 to Y3; 1 + α3,..., And the divided lower two bits Pb0; 0 to Pb0; 1, Pr
0; 0 to Pr0; 1, Pb1; 0 to Pb1; 1, Pr
1, 0-Pr1; 1, Pb2; 0-Pb2; 1, Pr
2; 0 to Pr2; 1,..., And 8 auxiliary bits β0, β1, β2, β3, β4, β5,.
, And 10 bits Pb0; 0 to Pb0; 1 + β
0, Pr0; 0 to Pr0; 1 + β1, Pb1; 0 to Pb
1; 1 + β2, Pr1; 0 to Pr1; 1 + β3, Pb
2; 0 to Pb2; 1 + β4, Pr2; 0 to Pr2; 1+
β5, ... And a 10-bit string: Y
0; 0 to Y0; 1 + α0, Y1; 0 to Y1; 1 + α1,
Y2; 0 to Y2; 1 + α2, Y3; 0 to Y3; 1 + α
..., 10-bit string: Pb0; 0 to Pb
0; 1 + β0, Pr0; 0 to Pr0; 1 + β1, Pb
1; 0 to Pb1, 1 + β2, Pr1; 0 to Pr1, 1+
β3, Pb2; 0 to Pb2; 1 + β4, Pr2;
The word transmission rate is 74.25 MBps, which is obtained by parallel multiplexing of r2; 1 + β5,.
The bit word string data DC12A2 is formed as a link A-2 based on the divided lower two bits as shown in FIG. 24B. That is, if the word transmission rate is 7
DC12A which is a 24-bit word string data set to 4.25 MBps has a word transmission rate of 74.25 MBp.
s and 20-bit word string data DC12A2 having a word transmission rate of 74.25 MBps are converted into two systems of word string data.

Also, as shown in FIG. 23B, the 12-bit words YD0, YD1, YD2 and YD2 constituting the Y data sequence are also applied to the 24-bit word string data DC12B having a word transmission rate of 74.25 MBps. YD
3, ..., and 12-bit word PbD0 constituting the P _B / P _R data sequence, prd0, PBD1, P
Each of rD1, PbD2, PrD2,... is represented by upper 10 bits Y0; 2 to Y0; 11, Y1;
11, Y2; 2 to Y2; 11, Y3; 2 to Y3; 11,
..., and Pb0; 2 to Pb0; 11, Pr
0; 2 to Pr0; 11, Pb1; 2 to Pb1; 11, P
r1; 2 to Pr1; 11, Pb2; 2 to Pb2; 11,
... And the lower two bits Y0; 0 to Y0; 1, Y1; 0 to Y1; 1, Y2;
~ Y2; 1, Y3; 0 to Y3; 1, ..., and
Pb0; 0 to Pb0; 1, Pr0; 0 to Pr0; 1, P
b1; 0 to Pb1; 1, Pr1; 0 to Pr1; 1, Pb
2; 0 to Pb2; 1, Pr2; 0 to Pr2;
··· Perform processing to divide into

Subsequently, a sequence of the divided upper 10 bits:
Y0; 2 to Y0; 11, Y1; 2 to Y1; 11, Y2;
2-Y2; 11, Y3; 2-Y3; 11, ...
And a sequence of the divided upper 10 bits: Pb0;
0; 11, Pr0; 2 to Pr0; 11, Pb1;
b1; 11, Pr1; 2 to Pr1; 11, Pb2; 2
Pb2; 11, Pr2; 2 to Pr2; 11, ...
And a word transmission rate of 7
20-bit word string data DC with 4.25 MBps
12B1 is formed as a link B-1 based on the divided upper 10 bits as shown in FIG.

At the same time, the divided lower two bits Y
0; 0 to Y0; 1, Y1; 0 to Y1; 1, Y2;
2; 1, Y3; 0 to Y3; 1,... And 8-bit auxiliary bits α0, α1, α2, α3,. 1 + α0, Y
1; 0 to Y1, 1 + α1, Y2; 0 to Y2, 1 + α2
Y3; 0 to Y3; 1 + α3,..., And the divided lower two bits Pb0; 0 to Pb0; 1, Pr
0; 0 to Pr0; 1, Pb1; 0 to Pb1; 1, Pr
1, 0-Pr1; 1, Pb2; 0-Pb2; 1, Pr
2; 0 to Pr2; 1,..., And 8 auxiliary bits β0, β1, β2, β3, β4, β5,.
, And 10 bits Pb0; 0 to Pb0; 1 + β
0, Pr0; 0 to Pr0; 1 + β1, Pb1; 0 to Pb
1; 1 + β2, Pr1; 0 to Pr1; 1 + β3, Pb
2; 0 to Pb2; 1 + β4, Pr2; 0 to Pr2; 1+
β5, ... And a 10-bit string: Y
0; 0 to Y0; 1 + α0, Y1; 0 to Y1; 1 + α1,
Y2; 0 to Y2; 1 + α2, Y3; 0 to Y3; 1 + α
..., 10-bit string: Pb0; 0 to Pb
0; 1 + β0, Pr0; 0 to Pr0; 1 + β1, Pb
1; 0 to Pb1, 1 + β2, Pr1; 0 to Pr1, 1+
β3, Pb2; 0 to Pb2; 1 + β4, Pr2;
The word transmission rate is 74.25 MBps, which is obtained by parallel multiplexing of r2; 1 + β5,.
The bit word string data DC12B2 is formed as a link B-2 based on the divided lower two bits as shown in FIG. 24B. That is, if the word transmission rate is 7
DC12B which is a 24-bit word string data set to 4.25 MBps is converted to a word transmission rate of 74.25 MBp.
s and 20-bit word string data DC12B2 having a word transmission rate of 74.25 MBps are converted into two systems of word string data.

As a result, the digital data DVXX supplied to the data processing unit 102 has a word transmission rate of 1
If the data DC12 is 24-bit word string data of 48.5 MBps, the data processing unit 10
2, each of the 24-bit word string data DC12 has a word transmission rate of 74.25 MBps.
Bit word string data DC12A1, DC12A2, D
It is converted into word string data of four systems of C12B1 and DC12B2.

The data DVXX has a quantization bit number of 14
Data DC shown in FIG. 38 as digital data forming a digital video signal of 4: 2: 2 format having bits
If it is 14, or as digital data forming a digital video signal of 4: 2: 2 format in which the number of quantization bits is 16 bits, the data DC16 shown in FIG.
In this case, the data DC14 is 28-bit word string data with a word transmission rate of 148.5 MBps, and the data DC16 is a word transmission rate of 148.5 MBps.
This is 32-bit word string data of 8.5 MBps. Then, similarly to the case where the data DVXX is the data DC12, each of them increases the word transmission rate to 74.25.
20-bit word string data DC14A with MBps
1, DC14A2, DC14B1 and DC14B2
System word string data, or 20-bit word string data DC16A1, DC16A2, DC16B1 and D each having a word transmission rate of 74.25 MBps
Word string data of four systems of C16B2 is formed.

[0143] However, when the hunt斯, when data DVXX is data DC12, each 12-bit word constituting each 12-bit word and P _B / P _R data sequence constituting the Y data sequence respectively, Upper 10 bits and lower 2
Instead of dividing the data DVXX into bits, the data DVXX
If it is 14, each constituting each 14-bit word and P _B / P _R data sequence constituting the Y data sequence 14
Each of the bit words is divided into upper 10 bits and lower 4 bits. When the data DVXX is the data DC16, each of the 16-bit words and the P _B / P _R data sequence constituting the Y data sequence are divided. Each of the constituent 16-bit words is divided into upper 10 bits and lower 6 bits. Thereby, the word transmission rate is set to 148.5M.
Data D, which is 28-bit word string data at Bps
C14, each with a word transmission rate of 74.25 MBp
20-bit word string data DC14A1 and DC
14A2, DC14B1 and DC14B2 are converted into four-system word string data.
Data DC16, which is 32-bit word string data of 8.5 MBps, each has a word transmission rate of 74.2.
20-bit word string data DC16A with 5 MBps
1, DC16A2, DC16B1 and DC16B2
It is converted into system word string data.

When the data DVXX has a quantization bit number of 10
Data DD shown in FIG. 38 as digital data forming a 4: 4: 4 digital video signal in bits
10, the data DD10 has a word transmission rate of 148.5 MBp, as shown in FIG.
The G data sequence as 10-bit word string data as s, and 1 as the word transmission rate at 148.5 MBps
The B data sequence as 0-bit word sequence data and the R data sequence as 10-bit word sequence data with a word transmission rate of 148.5 MBps are parallel-multiplexed under frame synchronization and line synchronization. The data processing unit 102 obtains the obtained 30-bit word string data having a word transmission rate of 148.5 MBps.
Supplied to

In the data processing unit 102, the data DD10 supplied as shown in FIG.
0, GD1, GD2, GD3,..., 10-bit words BD0, BD1, BD forming a B data sequence
, And 10-bit words RD0, RD1, RD2, RD3 constituting the R data sequence
.. Are assigned to group 1 and group 2 for each line unit. And group 1
The word transmission rate is set to 148.5 MBps / 2 = 74.25 MB based on the data of every other line of each of the G data sequence, the B data sequence, and the R data sequence constituting
As shown in FIG. 25B, a 30-bit word string data DD10A of ps is formed as a link A as shown in FIG. The word transmission rate is set to 148.5 MBp based on the data in the line section.
The 30-bit word string data DD10B with s / 2 = 74.25 MBps is formed as a link B as shown in FIG.

Subsequently, as shown in FIG. 4, the 10-bit words GD0, GD1, GD2, and GD2 constituting the G data sequence are applied to the 30-bit word string data DD10A obtained as shown in FIG. GD3, ...
.., A 10-bit word BD0 constituting a B data sequence
BD1, BD2, BD3,... And 10-bit words RD0, RD1, RD constituting an R data sequence
, RD3,..., 10-bit words AD0, AD1, AD2, AD3,.
... is added. Then, as shown in FIG. 4 by being divided by a thick solid line, 10-bit words GD0, GD1, GD2, GD3,.
... And every other 10-bit word BD0, BD2, BD4, BD in the B data sequence
... And every other 10-bit word RD0, RD2, RD of the 10-bit words forming the R data sequence
, Which form the auxiliary data sequence, and the 10-bit words AD0, AD1, AD2, AD3,. Every other bit word BD1, BD3, BD5, BD7,...
, And every other one of the 10-bit words RD1, RD3, RD5, RD constituting the R data sequence
.. Are divided into 10-bit word groups 2 including 7,.

Then, based on the 10-bit word group 1, the word transmission rate is set to 74.25 MBps 2
The 0-bit word string data DD10A1 is linked to the link A-1.
26A is formed as shown in FIG. At the same time, based on the 10-bit word group 2, 20-bit word string data DD10A2 having a word transmission rate of 74.25 MBps is formed as a link A-2 as shown in FIG. 26B. That is, DD10A, which is 30-bit word string data having a word transmission rate of 74.25 MBps, is converted to 20-bit word string data D having a word transmission rate of 74.25 MBps.
The data is converted into two-system word string data of D10A1 and DD10A2.

Also, for the 30-bit word string data DD10B obtained as shown in FIG. 25B, as shown in FIG. 4, the 10-bit words GD0, GD1, GD2, GD3, ...
.., A 10-bit word BD0 constituting a B data sequence
BD1, BD2, BD3,... And 10-bit words RD0, RD1, RD constituting an R data sequence
, RD3,..., 10-bit words AD0, AD1, AD2, AD3,.
... is added. Then, as shown in FIG. 4 by being divided by a thick solid line, 10-bit words GD0, GD1, GD2, GD3,.
... And every other 10-bit word BD0, BD2, BD4, BD in the B data sequence
... And every other 10-bit word RD0, RD2, RD of the 10-bit words forming the R data sequence
, Which form the auxiliary data sequence, and the 10-bit words AD0, AD1, AD2, AD3,. Every other bit word BD1, BD3, BD5, BD7,...
, And every other one of the 10-bit words RD1, RD3, RD5, RD constituting the R data sequence
.. Are divided into 10-bit word groups 2 including 7,.

Then, based on the 10-bit word group 1, the word transmission rate is set to 74.25 MBps 2
The 0-bit word string data DD10B1 is linked to link B-1.
26A is formed as shown in FIG. At the same time, based on the 10-bit word group 2, 20-bit word string data DD10B2 having a word transmission rate of 74.25 MBps is formed as a link B-2 as shown in FIG. 26B. That is, DD10B which is 30-bit word string data having a word transmission rate of 74.25 MBps is converted to 20-bit word string data D having a word transmission rate of 74.25 MBps.
This is converted into word string data of two systems, D10B1 and DD10B2.

As a result, the data DVXX supplied to the data processing unit 102 has a word transmission rate of 148.5M.
If the data DD10 is 30-bit word string data of Bps, the data processing unit 102 determines that each of the data DD10 has a word transmission rate of 7 bits.
20-bit word string data DD set to 4.25 MBps
10A1, DD10A2, DD10B1 and DD10B
That is, the word string data is converted into four systems of word string data.

The data DVXX has a quantization bit number of 12
Data DD shown in FIG. 38 as digital data forming a 4: 4: 4 digital video signal in bits
12, the data DD12 has a word transmission rate of 148.5 MBp as shown in FIG.
G data sequence as 12-bit word string data as s, and 1 as a word transmission rate of 148.5 MBps
The B data sequence as 2-bit word sequence data and the R data sequence as 12-bit word sequence data with a word transmission rate of 148.5 MBps are parallel-multiplexed under frame synchronization and line synchronization. The data processing unit 102 obtains the obtained 36-bit word string data having a word transmission rate of 148.5 MBps.
Supplied to

In the data processing unit 102, the data DD12 supplied as shown in FIG.
0, GD1, GD2, GD3,..., 12-bit words BD0, BD1, BD constituting a B data sequence
..., and 12-bit words RD0, RD1, RD2, RD3 constituting the R data sequence
.. Are assigned to group 1 and group 2 for each line unit. And group 1
The word transmission rate is set to 148.5 MBps / 2 = 74.25 MB based on the data of every other line of each of the G data sequence, the B data sequence, and the R data sequence constituting
As shown in FIG. 27B, a 36-bit word string data DD12A of ps is formed as a link A as shown in FIG. The word transmission rate is set to 148.5 MBp based on the data in the line section.
The link B is formed as 36-bit word string data DD12B with s / 2 = 74.25 MBps as shown in FIG.

Next, as shown in FIG. 27B, for the 36-bit word string data DD12A having a word transmission rate of 74.25 MBps, the 12-bit words GD0, GD1, GD2, GD
, 12-bit words BD0, BD1, BD2, BD3,... Constituting the B data series, and 12-bit words RD0,
Each of RD1, RD2, RD3,...
0 bits G0; 2 to G0; 11, G1; 2 to G1; 1
1, G2; 2 to G2; 11, G3; 2 to G3; 11,.
..., B0; 2 to B0; 11, B1; 2 to B1; 1
1, B2; 2 to B2; 11, B3; 2 to B3; 11,.
..., and R0; 2 to R0; 11, R1;
1, R2; 2 to R2; 11, R3; 2 to R3; 1
... And the lower two bits G0; 0 to G0;
G1; 0 to G1; 1, G2; 0 to G2; 1, G3;
, B0; 0 to B0; 1, B1; 0
-B1; 1, B2; 0-B2; 1, B3; 0-B3;
1, ..., and R0; 0 to R0; 1, R1; 0
To R1; 1, R2; 0 to R2; 1, R3; 0 to R3;
.., Are performed.

Subsequently, the divided lower two bits G0; 0
0 to B0; 1 and R0; 0 to R0;
1 is bit-multiplexed, and 6-bit GBR0 (0 to 1) is divided into the lower 2 bits G1; 0 to G1; 1, B1;
B1; 1 and R1; 0 to R1;
2; 1, B2; 0 to B2; 1 and R2; 0 to R2; 1 are bit-multiplexed, and 6-bit GBR2 (0 to 1)
Bit G3; 0 to G3; 1, B3; 0 to B3; 1 and R
3; 0 to R3; 1 are bit-multiplexed and 6-bit GBR3
(0-1) are formed. Further, 6-bit GBR0 (0 to 1), GBR1 (0 to 1), GBR2
(0-1), GBR3 (0-1),..., 4-bit auxiliary bits γ0, γ1, γ2, γ3,.
, And 10-bit GBR0 (0 to 1) + γ0,
GBR1 (0-1) + γ1, GBR2 (0-1) + γ
2, GBR3 (0 to 1) + γ3,...

Further, the divided upper 10 bits G0;
2-G0; 11, G1; 2-G1; 11, G2; 2-G
2; 11, G3; 2 to G3; 11,..., B0;
2-B0; 11, B1; 2-B1; 11, B2; 2-B
2; 11, B3; 2 to B3; 11, ..., and
R0; 2 to R0; 11, R1; 2 to R1; 11, R2;
... Are assigned to group 1 and group 2, and 10 bits GBR0 (0 to 1) + γ0, GBR are assigned to group 2.
1 (0-1) + γ1, GBR2 (0-1) + γ2, GB
By adding R3 (0-1) + γ3,..., A 10-bit word group 1 and a 10-bit word group 2 are obtained as separated by the thick solid line in FIG.

The word transmission rate is set to 74.25 based on the 10-bit word group 1 shown in FIG.
20-bit word string data DD12A1 with MBps
Is formed as a link A-1 as shown in FIG. 29A, and a word transmission rate based on the 10-bit word group 2 shown in FIG.
20-bit word string data DD12A2 at Bps
Is formed as a link A-2 as shown in FIG. 29B. That is, the word transmission rate is set to 74.25 MBp.
DD12A which is 36-bit word string data to be s
With a word transmission rate of 74.25 MBps
The conversion is performed into two types of word string data: bit word string data DD12A1 and 20-bit word string data DD12A2 having a word transmission rate of 74.25 MBps.

Also, as shown in FIG. 27B, the 12-bit words GD0, GD1, GD2, and GD2 constituting the G data sequence are also provided for the 36-bit word string data DD12B having a word transmission rate of 74.25 MBps. GD
, 12-bit words BD0, BD1, BD2, BD3,... Constituting the B data series, and 12-bit words RD0,
Each of RD1, RD2, RD3,...
0 bits G0; 2 to G0; 11, G1; 2 to G1; 1
1, G2; 2 to G2; 11, G3; 2 to G3; 11,.
..., B0; 2 to B0; 11, B1; 2 to B1; 1
1, B2; 2 to B2; 11, B3; 2 to B3; 11,.
..., and R0; 2 to R0; 11, R1;
1, R2; 2 to R2; 11, R3; 2 to R3; 1
... And the lower two bits G0; 0 to G0;
G1; 0 to G1; 1, G2; 0 to G2; 1, G3;
, B0; 0 to B0; 1, B1; 0
-B1; 1, B2; 0-B2; 1, B3; 0-B3;
1, ..., and R0; 0 to R0; 1, R1; 0
To R1; 1, R2; 0 to R2; 1, R3; 0 to R3;
.., Are performed.

Subsequently, the divided lower two bits G0; 0
0 to B0; 1 and R0; 0 to R0;
1 is bit-multiplexed, and 6-bit GBR0 (0 to 1) is divided into the lower 2 bits G1; 0 to G1; 1, B1;
B1; 1 and R1; 0 to R1;
2; 1, B2; 0 to B2; 1 and R2; 0 to R2; 1 are bit-multiplexed, and 6-bit GBR2 (0 to 1)
Bit G3; 0 to G3; 1, B3; 0 to B3; 1 and R
3; 0 to R3; 1 are bit-multiplexed and 6-bit GBR3
(0-1) are formed. Further, 6-bit GBR0 (0 to 1), GBR1 (0 to 1), GBR2
(0-1), GBR3 (0-1),..., 4-bit auxiliary bits γ0, γ1, γ2, γ3,.
, And 10-bit GBR0 (0 to 1) + γ0,
GBR1 (0-1) + γ1, GBR2 (0-1) + γ
2, GBR3 (0 to 1) + γ3,...

Further, the divided upper 10 bits G0;
2-G0; 11, G1; 2-G1; 11, G2; 2-G
2; 11, G3; 2 to G3; 11,..., B0;
2-B0; 11, B1; 2-B1; 11, B2; 2-B
2; 11, B3; 2 to B3; 11, ..., and
R0; 2 to R0; 11, R1; 2 to R1; 11, R2;
... Are assigned to group 1 and group 2, and 10 bits GBR0 (0 to 1) + γ0, GBR are assigned to group 2.
1 (0-1) + γ1, GBR2 (0-1) + γ2, GB
By adding R3 (0-1) + γ3,..., A 10-bit word group 1 and a 10-bit word group 2 are obtained as separated by the thick solid line in FIG.

The word transmission rate is set to 74.25 based on the 10-bit word group 1 shown in FIG.
20-bit word string data DD12B1 with MBps
Is formed as a link B-1 as shown in FIG. 29A, and a word transmission rate based on the 10-bit word group 2 shown in FIG.
20-bit word string data DD12B2 at Bps
Is formed as a link B-2 as shown in FIG. 29B. That is, the word transmission rate is set to 74.25 MBp.
DD12B which is 36-bit word string data to be s
With a word transmission rate of 74.25 MBps
This is converted into two-system word string data of bit word string data DD12B1 and 20-bit word string data DD12B2 having a word transmission rate of 74.25 MBps.

As a result, the data DVXX supplied to the data processing unit 102 has a word transmission rate of 148.5M.
If the data DD12 is 36-bit word string data of Bps, the data processing unit 102 sets the data DD12 to a word transmission rate of 7
20-bit word string data DD set to 4.25 MBps
12A1, DD12A2, DD12B1 and DD12B
That is, the word string data is converted into four systems of word string data.

The data processing unit 102 sets the word transmission rate obtained as described above to 74.25 MBps.
Bit word string data DC12A1, DC12A2, D
A set of C12B1 and DC12B2, DC14A1, DC
14A2, a set of DC14B1 and DC14B2, DC1
6A1, DC16A2, DC16B1 and DC16B2
, DD10A1, DD10A2, DD10B1 and DD10B2, and DD12A1, DD12A
2, one of the set of DD12B1 and DD12B2,
20-bit word string data DPA1 (20), DPA2
(20), DPB1 (20) and DPB2 (20).

The 20-bit word string data DPA1 (20) having a word transmission rate of 74.25 MBps sent from the data processing unit 102 is supplied to the P / S conversion unit 103. The P / S converter 103 performs P / S conversion on the 20-bit word string data DPA1 (20), and sets a bit transmission rate based on the 20-bit word string data DPA1 (20) to 74.25 MBps × 20 = 1.
485 Gbps serial data DSA1 is formed, and the serial data DSA1 is converted to an E / O converter 104.
To supply. The E / O conversion unit 104 has the same configuration as the E / O conversion unit 14 in the example shown in FIG. 1 and forms an optical signal forming unit, performs an electro-optical conversion process on the serial data DSA1, and Transmission rate of 1.485 Gb
An optical signal OSA1 having a center wavelength of about 1.55 μm, for example, is formed. This optical signal OSA1
Is supplied to the multiplexing unit 107.

On the other hand, 20-bit word string data DPA2 (20) having a word transmission rate of 74.25 MBps sent from data processing section 102 is supplied to P / S conversion section 1
08. In the P / S converter 108, 2
The P / S conversion is performed on the 0-bit word string data DPA2 (20) to obtain the 20-bit word string data DPA2 (20).
, Forming a serial data DSA2 having a bit transmission rate of 1.485 Gbps based on the serial data DSA2, and supplying the serial data DSA2 to the E / O converter 109. The E / O converter 109 is the E / O converter 1 in the example shown in FIG.
9 to form an optical signal forming portion,
The serial data DSA2 is subjected to electro-optical conversion processing to set the bit transmission rate to 1.485 Gbps, for example, an optical signal OSA2 having a center wavelength of about 1.48 μm.
To form This optical signal OSA2 is also supplied to the multiplexing unit 107.

The multiplexing unit 107 is configured similarly to the multiplexing unit 17 in the example shown in FIG. 1.485 transmission rate
An optical signal OSA2 having a center wavelength of about 1.48 μm in Gbps is multiplexed and multiplexed, and a multiplexed optical signal OZA is transmitted. Then, the multiplexed optical signal OZA obtained in the multiplexing unit 107 is guided to the bidirectional WDM coupler 120.

The bidirectional WDM coupler 120 is, for example, similar to the bidirectional WDM coupler 30 in the example shown in FIG. It is configured to include a dielectric multilayer film portion provided with input / output terminals. Then, in the bidirectional WDM coupler 120, the optical signal OZA from the multiplexing unit 107 is guided to the dielectric multilayer film unit through one of the two input / output terminals on one end side thereof, and Through the multilayer part, it is led out through one input / output end on the other end side. The multiplexed optical signal OZA that has passed through the bidirectional WDM coupler 120 is guided to the optical connector 130. The multiplexing unit 107 and the bidirectional WDM coupler 120 form an optical signal processing unit.

The optical connector 130 connects the bidirectional WDM coupler 120 and one end of the optical signal transmission cable 131. Thereby, the bidirectional WDM coupler 12
The multiplexed optical signal OZA from 0 is transmitted to the optical signal transmission cable 131 through the optical connector 130 from one end thereof. The optical signal transmission cable 131 is, for example, a quartz SM
F.

At the other end of the optical signal transmission cable 131,
An optical connector 133 for connecting the optical connector 133 to the bidirectional WDM coupler 132 is provided. As a result, the multiplexed optical signal OZA transmitted from one end of the optical signal transmission cable 131 to the optical signal transmission cable 131 through the optical connector 130 is transmitted from one end to the other end of the optical signal transmission cable 131, and from the other end to the optical connector 133. Through to the bidirectional WDM coupler 132.

The bidirectional WDM coupler 132 has, for example, two input / output terminals at one end and one input / output terminal at the other end, similarly to the bidirectional WDM coupler 42 in the example shown in FIG. It is configured to include a dielectric multilayer film portion provided with input / output terminals. In the bidirectional WDM coupler 132, the optical connector 133
Multiplexed optical signal OZA is guided to the dielectric multilayer film portion through one input / output terminal on the other end, and passes through the dielectric multilayer film portion to one of the two input / output terminals on one end side. Derived through one. The multiplexed optical signal OZA that has passed through the bidirectional WDM coupler 132 is guided to the demultiplexing unit 142.

The demultiplexing unit 142 is configured in the same manner as the demultiplexing unit 52 in the example shown in FIG. Optical signal OSA1 having a center wavelength of about 1.55 μm and a bit transmission rate of 1.485 Gbps and a center wavelength of about 1.48 μm.
and an optical signal OSA2 as m.

Optical signal OSA derived from demultiplexing section 142
1 and OSA2 are O / E converters 147 and 14 respectively.
It is led to 8. The bidirectional WDM coupler 132 and the demultiplexing unit 142 form an optical signal processing unit.

In the O / E converter 147, the bit transmission rate is set to 1.485 Gbps, and the center wavelength is set to about 1.48 Gbps.
The optical signal OSA1 having a thickness of 55 μm is subjected to photoelectric conversion processing so that the bit transmission rate based on the optical signal OSA1 is 1.
The serial data DSA1 of 485 Gbps is reproduced and supplied to the S / P converter 149. In the S / P converter 149, the bit transmission rate is set to 1.485G.
The S / P conversion for forming 20-bit parallel data is performed on the serial data DSA1 having a bps of 1, and the word transmission rate is 1.485 Gbps / 20 = 74.25 MB.
20-bit word string data DPA1 (20) as ps
And supplies it to the data reproduction processing unit 150.

In the O / E converter 148, the optical signal OSA2 having a bit transmission rate of 1.485 Gbps and a center wavelength of about 1.48 μm is subjected to photoelectric conversion processing to be based on the optical signal OSA2. And reproduces the serial data DSA2 having a bit transmission rate of 1.485 Gbps, and supplies it to the S / P converter 151. In the S / P converter 151, the bit transmission rate is set to 1.485.
The serial data DSA2 having Gbps is subjected to S / P conversion for forming 20-bit parallel data, and the word transmission rate is 1.485 Gbps / 20 = 74.25M
20-bit word string data DPA2 (2
0) and supplies it to the data reproduction processing unit 150.

The 20-bit word string data DPB1 (20) having a word transmission rate of 74.25 MBps sent from the data processing unit 102 is supplied to the P / S conversion unit 1
53. In the P / S converter 153, 2
The P / S conversion is performed on the 0-bit word string data DPB1 (20) to obtain the 20-bit word string data DPB1 (20).
The bit transmission rate based on
= 1.485 Gbps, and forms the serial data DSB1 into the E / O conversion unit 1.
54. The E / O conversion unit 154 is configured similarly to the E / O conversion unit 104, forms an optical signal forming unit, and performs an electro-optical conversion process on the serial data DSB1.
The bit transmission rate is set to 1.485 Gbps, for example,
Optical signal OSB having a center wavelength of about 1.55 μm
Form one. This optical signal OSB1 is supplied to the multiplexing unit 157.

On the other hand, 20-bit word string data DPB2 (20) having a word transmission rate of 74.25 MBps sent from data processing section 102 is supplied to P / S conversion section 1
58. In the P / S converter 158, 2
The P / S conversion is performed on the 0-bit word string data DPB2 (20) to obtain the 20-bit word string data DPB2 (20).
, Forming a serial data DSB2 having a bit transmission rate of 1.485 Gbps based on the serial data DSB2, and supplying the serial data DSB2 to the E / O converter 159. E / O conversion section 159 is configured similarly to E / O conversion section 109,
Forming an optical signal forming part, and serial data DSB2
Is subjected to light-to-light conversion processing to increase the bit transmission rate to 1.48.
An optical signal OSB2 having a center wavelength of 5 Gbps, for example, approximately 1.48 μm is formed. This optical signal O
SB2 is also supplied to the multiplexing unit 157.

The multiplexing section 157 has the same configuration as the multiplexing section 107, and has an optical signal OSB1 having a word transmission rate of 1.485 Gbps and a center wavelength of about 1.55 μm;
An optical signal OSB2 having a word transmission rate of 1.485 Gbps and a center wavelength of about 1.48 μm is multiplexed and multiplexed, and a multiplexed optical signal OZB is transmitted. Then, the multiplexed optical signal OZB obtained in the multiplexing unit 157 is
It is guided to the DM coupler 170.

The bidirectional WDM coupler 170 has, for example, two input / output terminals at one end and one input / output terminal at the other end, similarly to the bidirectional WDM coupler 120. It is configured to include a dielectric multilayer part. Then, the bidirectional WDM coupler 170
, The multiplexed optical signal OZB from the multiplexing unit 157 is
It is guided to the dielectric multilayer film portion through one of the two input / output terminals on one end side, passes through the dielectric multilayer film portion, and is led out through one input / output terminal on the other end side. And
Multiplexed optical signal O passing through bidirectional WDM coupler 170
ZB is guided to the optical connector 180. Multiplexing unit 157
And the bidirectional WDM coupler 170 form an optical signal processing unit.

The optical connector 180 connects the bidirectional WDM coupler 170 and one end of the optical signal transmission cable 181. Thereby, the bidirectional WDM coupler 17
The multiplexed optical signal OZB from 0 is transmitted to the optical signal transmission cable 181 through the optical connector 180 from one end thereof. The optical signal transmission cable 181 is, for example, a quartz SM
F.

At the other end of the optical signal transmission cable 181,
An optical connector 183 for connecting the optical connector 183 to the bidirectional WDM coupler 182 is provided. Thus, the multiplexed optical signal OZB sent from one end to the optical signal transmission cable 181 through the optical connector 180 is transmitted from one end to the other end of the optical signal transmission cable 181, and the optical connector 183 is sent from the other end. Through to the bidirectional WDM coupler 182.

The bidirectional WDM coupler 182, like the bidirectional WDM coupler 132, has, for example, two input / output terminals at one end and one input / output terminal at the other end. It is configured to include a dielectric multilayer part. Then, in the bidirectional WDM coupler 182, the multiplexed optical signal OZB through the optical connector 183 is guided to the dielectric multilayer film through one input / output terminal on the other end, and the dielectric multilayer film Through one of the two input / output terminals on one end side. The multiplexed optical signal OZB that has passed through the bidirectional WDM coupler 182 is guided to the demultiplexing unit 192.

The demultiplexing section 192 is configured in the same manner as the demultiplexing section 142, demultiplexes the multiplexed optical signal OZB that has passed through the bidirectional WDM coupler 182, and sets the bit transmission rate to 1.48.
An optical signal OSB1 with 5 Gbps and a center wavelength of about 1.55 μm, and a bit transmission rate of 1.485 Gbps
And an optical signal OSB2 having a center wavelength of about 1.48 μm.
Is derived.

Optical signal OSB derived from demultiplexing section 192
1 and OSB2 are O / E converters 197 and 19, respectively.
It is led to 8. The bidirectional WDM coupler 182 and the demultiplexing unit 192 form an optical signal processing unit.

In the O / E converter 197, the bit transmission rate is set to 1.485 Gbps, and the center wavelength is set to approximately 1.85 Gbps.
The optical signal OSB1 having a thickness of 55 μm is subjected to a photoelectric conversion process so that the bit transmission rate based on the optical signal OSB1 is 1.
The serial data DSB1 of 485 Gbps is reproduced and supplied to the S / P converter 199. In the S / P converter 199, the bit transmission rate is set to 1.485G.
The S / P conversion for forming 20-bit parallel data is performed on the serial data DSB1 having a bps of 1, and the word transmission rate is 1.485 Gbps / 20 = 74.25 MB.
20-bit word string data DPB1 (20) as ps
And supplies it to the data reproduction processing unit 150.

The O / E conversion section 198 performs a photoelectric conversion process on the optical signal OSB2 having a bit transmission rate of 1.485 Gbps and a center wavelength of about 1.48 μm, and is based on the optical signal OSB2. And reproduces the serial data DSB2 having a bit transmission rate of 1.485 Gbps, and supplies it to the S / P converter 200. In the S / P converter 200, the bit transmission rate is set to 1.485.
The serial data DSB2 at Gbps is subjected to S / P conversion for forming 20-bit parallel data, and the word transmission rate is 1.485 Gbps / 20 = 74.25M
20-bit word string data DPB2 (2
0) and supplies it to the data reproduction processing unit 150.

In the data reproduction processing section 150, 20
Bit word string data DPA1 (20), DPA2 (2
0), DPB1 (20), and DPB2 (20) are subjected to data processing that is the reverse of the data processing performed on the data DVXX in the data processing unit 102, whereby the 20-bit word string data DPA1 (20) , DP
A2 (20), DPB1 (20) and DPB2 (20)
, And supplies the data DVXX to the signal recording / reproducing unit 101. The data DVXX reproduced in this manner is composed of the data DC12 and DCDC shown in FIG.
14, DC16, DD10 and DD12. In the signal recording / reproducing unit 101, for example, data DVXX is recorded by a built-in VTR.

The signal recording / reproducing section 101 is also provided with a return video signal forming section. For example, each of the return video signal forming sections has a word transmission rate of 74.25.
Digital data DPMA and DPMB that form two return video signals, that is, 20-bit word string data of MBps are transmitted. Thereby, the signal recording / reproducing unit 1
01 obtained from DPMA and DPM
B is supplied to P / S converters 201 and 205, respectively.

In the P / S converter 201, the digital data DPMA is subjected to P / S conversion to form serial data DSMA having a bit transmission rate of 74.25 MBps × 20 = 1.485 Gbps. E / O
It is supplied to the conversion unit 202. The E / O conversion unit 202 is configured as shown in FIG.
Similarly to the E / O conversion unit 66 in the example shown in FIG.
The MA is subjected to light-to-light conversion to reduce the bit transmission rate to 1.
An optical signal OSMA having a center wavelength of about 485 Gbps, for example, about 1.3 μm is formed. This optical signal OSMA is guided to the bidirectional WDM coupler 132.

In the bidirectional WDM coupler 132, the optical signal OSMA is guided to the dielectric multilayer film through one of the two input / output terminals at one end thereof, and the dielectric multilayer film is connected to the optical signal OSMA. Then, it is led out through one input / output terminal on the other end side. The optical signal OSMA that has passed through the bidirectional WDM coupler 132 is guided to the optical connector 133.
Then, the optical signal OSMA is transmitted from the other end to the optical signal transmission cable 131 through the optical connector 133,
The light is transmitted from the other end of the optical signal transmission cable 131 to one end, and is guided from the one end to the bidirectional WDM coupler 120 through the optical connector 130.

In the bidirectional WDM coupler 120, the optical signal OSMA is guided to the dielectric multilayer film through one input / output end on the other end side, passes through the dielectric multilayer film, and then to one end thereof. Is derived through one of the two input / output terminals on the side. Then, the bidirectional WDM coupler 120
Is passed to the O / E conversion unit 203.

In the O / E converter 203, the bit transmission rate is set to 1.485 Gbps, and the center wavelength is set to approximately 1.85 Gbps.
The optical signal OSMA of 3 μm is subjected to photoelectric conversion processing,
The bit transmission rate based on the optical signal OSMA is 1.48.
Reproduce serial data DSMA of 5 Gbps.
Then, the reproduced serial data DSMA is S / P
The data is supplied to the conversion unit 204.

In S / P conversion section 204, serial data D having a bit transmission rate of 1.485 Gbps
The SMA is subjected to S / P conversion processing for obtaining 20-bit parallel data, and the word transmission rate based on the serial data DSMA is set to 1.485 Gbps / 20 = 74.25M.
The digital data DPMA, which is a Bps and forms a return video signal, is reproduced and supplied to the camera unit 10.

The P / S conversion section 205 performs a P / S conversion on the digital data DPMB to increase the bit transmission rate to 74.25 MBps × 20 = 1.485 Gb.
It forms serial data DSMB having ps and supplies it to the E / O conversion unit 206. E / O converter 206
Is, for example, 1.3 μm, like the E / O conversion unit 202.
FP laser diode is formed to form an optical signal forming unit, which performs an electro-optical conversion process on the serial data DSMB to increase the bit transmission rate to 1.485 Gbps.
For example, an optical signal OSMB having a center wavelength of about 1.3 μm is formed. This optical signal OSMB is guided to the bidirectional WDM coupler 182.

In the bidirectional WDM coupler 182, the optical signal OSMB is guided to the dielectric multilayer through one of the two input / output terminals on one end thereof, and the dielectric multilayer is connected to the optical multilayer OS. Then, it is led out through one input / output terminal on the other end side. The optical signal OSMB that has passed through the bidirectional WDM coupler 182 is guided to the optical connector 183.
Then, the optical signal OSMB is transmitted from the other end to the optical signal transmission cable 181 through the optical connector 183,
The light is transmitted from the other end of the optical signal transmission cable 181 to one end, and is guided from one end to the bidirectional WDM coupler 170 through the optical connector 180.

In the bidirectional WDM coupler 170, the optical signal OSMB is guided to the dielectric multilayer film through one input / output terminal on the other end, passes through the dielectric multilayer film, and goes to one end thereof. Is derived through one of the two input / output terminals on the side. Then, the bidirectional WDM coupler 170
Is passed to the O / E converter 207.

In the O / E converter 207, the bit transmission rate is set to 1.485 Gbps, and the center wavelength is set to approximately 1.85 Gbps.
The optical signal OSMB of 3 μm is subjected to photoelectric conversion processing,
The bit transmission rate based on the optical signal OSMB is 1.48.
The serial data DSMB of 5 Gbps is reproduced.
The reproduced serial data DSMB is stored in the S / P
The data is supplied to the conversion unit 208.

In S / P conversion section 208, serial data D having a bit transmission rate of 1.485 Gbps
The SMB is subjected to S / P conversion processing for obtaining 20-bit parallel data, and the word transmission rate based on the serial data DSMB is set to 1.485 Gbps / 20 = 74.25M.
The digital data DPMB, which is a Bps and forms a return video signal, is reproduced and supplied to the camera unit 10.

In the example shown in FIGS. 21 and 22, the data DV obtained from the camera
XX is the data DC12, DC14,
DC16, DD10 and DD12 are converted into multiplexed optical signals OZA and OZB under any one of
Optical signal transmission cables 131 and 1 from the camera unit 100 side
The digital data DPMA and DPMB transmitted to the signal recording / reproducing unit 101 through 81 and forming a return video signal transmitted from the signal recording / reproducing unit 101
Are converted into optical signals OSMA and OSMB, and the optical signal transmission cables 131 and 18
1, the bidirectional transmission of the multiplexed optical signal OZA and the optical signal OSMA is performed between one end and the other end of the optical signal transmission cable 131, and the optical signal transmission cable 181. Multiplexed optical signal OZB and optical signal OSM between one end and the other end of
Bidirectional transmission with B is performed.

Further, conversion of the data DVXX obtained from the camera unit 100 into multiplexed optical signals OZA and OZB, and digital data DPMA forming a return video signal
The conversion of the DPMB and the DPMB into the optical signals OSMA and OSMB can be performed, for example, by utilizing existing circuit components used for serial transmission of a digital video signal in accordance with HD SDI.

FIGS. 30 and 31 show claims 25, 27, 28, 32, 34, 35, 39, 41 or 41 in the claims of the present application. A data transmission apparatus according to any one of claims 57, 61, and 65 in the claims of the present application, wherein the example of the data transmission method according to the invention described in any one of the above aspects 42 is implemented. Here is an example.

The examples shown in FIGS. 30 and 31 correspond to FIG.
22 and a portion configured in the same manner as the example shown in FIG. 22, and FIGS.
Blocks, signals, or data corresponding to the blocks, signals, or data shown in FIG. 2 are denoted by the same reference numerals as in FIGS. 21 and 22, and redundant description thereof will be omitted.

The examples shown in FIG. 30 and FIG. 31 are also similar to those shown in FIG.
It is assumed that bidirectional transmission of digital data forming a Cinema signal and digital data forming a digital return video signal is performed. Supplied. 38. In FIG. 38, the data DVXX is the data DC12, DC14, DC16,
The frame rate shown as DD10 and DD12 is 50 Hz or 60 Hz, the sampling frequency is 148.5 MHz, the number of valid data samples in each line is 1920, the number of valid lines in each frame is 1080, and the number of quantization bits is set. Is 10 bits, 12 bits, 14 bits or 16 bits, 4: 2: 2 format or 4: 4: 4 format D
-Any of the digital data forming the Cinema signal.

In the examples shown in FIGS. 30 and 31, the bit transmission rate obtained from E / O conversion section 104 is 1.485 Gbps, and the center wavelength is approximately 1.5.
The optical signal OSA1 having a size of 5 μm is guided to the bidirectional WDM coupler 211. Bidirectional WDM coupler 211
Is the bidirectional W in the examples shown in FIGS.
Similarly to the DM coupler 120, for example, it is configured to include a dielectric multilayer film portion provided with two input / output ends on one end side and one input / output end on the other end side. Then, in the bidirectional WDM coupler 211, the optical signal OSA1 from the E / O converter 104 is
It is guided to the dielectric multilayer film portion through one of the two input / output terminals on one end side, passes through the dielectric multilayer film portion, and is led out through one input / output terminal on the other end side. And
Optical signal OSA passing through bidirectional WDM coupler 211
1 is guided to the multiplexing unit 212.

At the same time, the serial data DSA2 obtained from the P / S converter 108 is supplied to an E / O converter 213 forming an optical signal forming unit. E / O converter 2
13 is the E / O in the example shown in FIGS. 21 and 22.
Like the conversion unit 202, for example, it is configured to include a 1.3 μm band FP laser diode, and the serial data DSA2
To an optical signal OSA2 having a center wavelength of about 1.3 μm based on the serial data DSA2.
At a bit transmission rate of 1.485 Gbps. Then, the optical signal OSA2 transmitted from the E / O conversion unit 213 is guided to the multiplexing unit 212.

The multiplexing section 212 has the same configuration as that of the multiplexing section 107 in the examples shown in FIGS. 21 and 22, except that a dielectric multilayer film section is used instead of the directional coupling section. The optical signal OSA1 having a bit transmission rate of 1.485 Gbps and a center wavelength of about 1.55 μm
And an optical signal OSA2 having a bit transmission rate of 1.485 Gbps and a center wavelength of approximately 1.3 μm, are multiplexed and multiplexed to obtain a multiplexed optical signal OZA, which is transmitted through the optical connector 130 and transmitted through the optical connector 130. It is sent to the cable 131 from one end. The bidirectional WDM coupler 211 and the multiplexing unit 212 form an optical signal processing unit.

[0205] The optical signal transmission cable 131 is transmitted from one end to the other end, and the multiplexed optical signal OZA through the optical connector 133 is guided to the demultiplexing unit 214. Demultiplexer 2
14 has the same configuration as the demultiplexing unit 142 in the examples shown in FIGS. 21 and 22, but is configured by using a dielectric multilayer film unit instead of the directional coupling unit. And the bit transmission rate is set to 1.485 Gb.
optical signal OS having a center wavelength of about 1.55 μm
A1 and a bit transmission rate of 1.485 Gbps,
An optical signal OSA2 having a center wavelength of about 1.3 μm is derived.

Optical signal OSA derived from demultiplexing section 214
1 is directed to a bidirectional DWM coupler 215. The bidirectional DWM coupler 215 is, for example, similar to the bidirectional WDM coupler 132 in the examples shown in FIGS. 21 and 22, in which, for example, two input / output ends are provided at one end and one input / output end is provided at the other end. It is configured to include a dielectric multilayer film portion provided with input / output terminals. Then, in the bidirectional WDM coupler 215, the optical signal OSA1 from the demultiplexing unit 214 is guided to the dielectric multilayer through one input / output end on the other end side, and the dielectric multilayer is Through one of the two input / output terminals on the one end side. Then, the bidirectional WDM coupler 215
Is passed to the O / E converter 147.

On the other hand, the optical signal OSA 2 derived from the demultiplexer 214 is guided to the O / E converter 216. O / E
The conversion unit 216 sets the bit transmission rate to 1.48.
The optical signal OSA2 having 5 Gbps and a center wavelength of about 1.3 μm is subjected to photoelectric conversion processing, and the serial data DSA2 having a bit transmission rate of 1.485 Gbps based on the optical signal OSA2 is reproduced. Conversion unit 1
51. The demultiplexing unit 214 and the bidirectional WDM coupler 215 form an optical signal processing unit.

Also, obtained from E / O conversion section 154,
An optical signal OSB1 having a bit transmission rate of 1.485 Gbps and a center wavelength of about 1.55 μm has a bidirectional W signal.
It is guided to the DM coupler 221. The bidirectional WDM coupler 221 is, like the bidirectional WDM coupler 211,
For example, it is configured to include a dielectric multilayer film portion provided with two input / output terminals on one end and one input / output terminal on the other end. And the bidirectional W
In the DM coupler 221, the optical signal OSB1 from the E / O converter 154 is guided to the dielectric multilayer film through one of the two input / output terminals on one end side thereof, and the dielectric multilayer film Through the other input / output terminal on the other end side. Then, the bidirectional WDM coupler 221
The optical signal OSB1 that has passed through is guided to the multiplexing unit 222.

At the same time, the serial data DSB2 obtained from the P / S converter 158 is supplied to an E / O converter 223 forming an optical signal forming unit. E / O converter 2
23 is, for example, 1.3 like the E / O conversion unit 213.
An optical signal OSB2 having a center wavelength of about 1.3 μm based on the serial data DSB2 and having a bit transmission rate of 1.485 Gbp based on the serial data DSB2.
It is transmitted under the condition of s. Then, the E / O converter 223
The optical signal OSB <b> 2 transmitted from is transmitted to the multiplexing unit 222.

The multiplexing section 222 has the same configuration as the multiplexing section 212, has a bit transmission rate of 1.485 Gbps,
An optical signal OSB1 having a center wavelength of about 1.55 μm and an optical signal OSB2 having a bit transmission rate of 1.485 Gbps and a center wavelength of about 1.3 μm are multiplexed and multiplexed to obtain a multiplexed optical signal OZB. And connect it to the optical connector 180
To the optical signal transmission cable 181 from one end. Bidirectional WDM coupler 221 and multiplexer 22
2 forms an optical signal processing unit.

[0211] The optical signal transmission cable 181 is transmitted from one end to the other end, and the multiplexed optical signal OZB through the optical connector 183 is guided to the demultiplexer 224. Demultiplexer 2
24 is configured in the same manner as the demultiplexing unit 214,
Demultiplex ZB and increase bit transmission rate to 1.485 Gbp
s, and an optical signal OSB having a center wavelength of about 1.55 μm
1 and an optical signal OSB2 having a bit transmission rate of 1.485 Gbps and a center wavelength of about 1.3 μm.

The optical signal OSB derived from the demultiplexer 224
1 is directed to a bidirectional DWM coupler 225. Like the bidirectional WDM coupler 215, the bidirectional DWM coupler 225 is, for example, a dielectric multilayer having two input / output terminals at one end and one input / output terminal at the other end. It is configured as having a film part. Then, in the bidirectional WDM coupler 225, the optical signal OSB1 from the branching unit 224 is guided to the dielectric multilayer film unit through one input / output terminal on the other end side, and the dielectric multilayer film unit Through one of the two input / output terminals on the one end side. Then, the optical signal OSB1 that has passed through the bidirectional WDM coupler 225 is guided to the O / E converter 197.

On the other hand, the optical signal OSB2 derived from the demultiplexer 224 is guided to the O / E converter 226. O / E
In the conversion unit 226, the bit transmission rate is set to 1.48.
The optical signal OSB2 having 5 Gbps and a center wavelength of about 1.3 μm is subjected to photoelectric conversion processing, and the serial data DSB2 having a bit transmission rate of 1.485 Gbps based on the optical signal OSB2 is reproduced. Conversion unit 2
Supply to 00. The demultiplexing unit 224 and the bidirectional WDM coupler 225 form an optical signal processing unit.

Further, in the examples shown in FIGS. 30 and 31, a P / S conversion section 201 for performing a P / S conversion process on the digital data DPMA from the signal recording / reproducing section 101.
Is supplied to the E / O converter 227. The E / O conversion unit 227 includes, for example, a 1.48 μm band DFB laser diode like the E / O conversion unit 109 in the examples illustrated in FIGS. Then, based on the serial data DSMA, an optical signal OSMA having a center wavelength of about 1.48 μm is transmitted at a bit transmission rate of 1.485 Gbps.
Then, the optical signal OS transmitted from the E / O converter 227
The MA is directed to a bidirectional WDM coupler 215.

In the bidirectional WDM coupler 215, an optical signal OSMA having a bit transmission rate of 1.485 Gbps and a center wavelength of approximately 1.48 μm is provided to the dielectric multilayer film portion at two end portions thereof. It is led through one of the input / output terminals, passes through the dielectric multilayer part, and is led out through one of the input / output terminals on the other end side. Bidirectional WDM
The optical signal OSMA that has passed through the coupler 215 is output from the demultiplexer 2.
The optical signal is guided to the optical connector 133 through the optical connector 133 and transmitted to the optical signal transmission cable 131 through the optical connector 133 from the other end.

The optical signal transmission cable 131 is transmitted from the other end to the one end, and the optical signal OSMA through the optical connector 130 is guided to the bidirectional WDM coupler 211 through the multiplexing section 212. Bidirectional WDM coupler 2
11, the bit transmission rate is 1.485 Gbp
s, and an optical signal OSM having a center wavelength of about 1.48 μm.
A is guided to the dielectric multilayer part through one input / output terminal on the other end side, and is led out through the dielectric multilayer part through the other of the two input / output ends on one end side. Then, the optical signal OSMA that has passed through the bidirectional WDM coupler 211 is guided to the O / E converter 228.

In the O / E converter 228, the bit transmission rate is set to 1.485 Gbps, and the center wavelength is set to about 1.
The optical signal OSMA having a wavelength of 48 μm is subjected to photoelectric conversion processing, and the bit transmission rate based on the optical signal OSMA is set to 1.
The serial data DSMA having 485 Gbps is reproduced. Then, the reproduced serial data DSMA is S
/ P conversion section 204.

Further, the serial data DSMB obtained from the P / S conversion section 205 for performing the P / S conversion processing on the digital data DPMB from the signal recording / reproducing section 101 is converted to E / S
It is supplied to the O conversion unit 229. The E / O conversion unit 229
Similarly to the E / O converter 227, for example, it is configured to include a DFB laser diode of 1.48 μm band, performs an electro-optical conversion process on the serial data DSMB, and
An optical signal OSMB having a center wavelength of about 1.48 μm based on SMB and a bit transmission rate of 1.485 Gbps
And send it out. Then, the optical signal OSMB transmitted from the E / O converter 229 is guided to the bidirectional WDM coupler 225.

In the bidirectional WDM coupler 225, an optical signal OSMB having a bit transmission rate of 1.485 Gbps and a center wavelength of approximately 1.48 μm is transmitted to the dielectric multi-layered film portion at two end portions thereof. It is guided through one of the input / output terminals, passes through the dielectric multilayer part, and is led through one of the input / output terminals on the other end side. Bidirectional WDM
The optical signal OSMB that has passed through the coupler 225 is output to the demultiplexer 2.
The light is guided to the optical connector 183 through the optical connector 24, and is transmitted from the other end to the optical signal transmission cable 181 through the optical connector 183.

The optical signal transmission cable 181 is transmitted from the other end to the one end, and the optical signal OSMB transmitted through the optical connector 180 is guided to the bidirectional WDM coupler 221 through the multiplexing unit 222. Bidirectional WDM coupler 2
21, the bit transmission rate is 1.485 Gbp.
s, and an optical signal OSM having a center wavelength of about 1.48 μm.
B is guided to the dielectric multilayer part through one input / output terminal on the other end side, and is led out through the dielectric multilayer part through the other of the two input / output ends on one end side. Then, the optical signal OSMB that has passed through the bidirectional WDM coupler 221 is guided to the O / E converter 230.

In the O / E converter 230, the bit transmission rate is set to 1.485 Gbps, and the center wavelength is set to approximately 1.85 Gbps.
The optical signal OSMB having a thickness of 48 μm is subjected to photoelectric conversion processing, and the bit transmission rate based on the optical signal OSMB is set to 1.
The serial data DSMB of 485 Gbps is reproduced. Then, the reproduced serial data DSMB is S
/ P conversion section 208.

The other points are the same as those shown in FIGS. 21 and 22.

In the examples shown in FIGS. 30 and 31 as described above, data DV obtained from camera
XX is the data DC12, DC14,
DC16, DD10 and DD12 are converted into multiplexed optical signals OZA and OZB under any one of
Optical signal transmission cables 131 and 1 from the camera unit 100 side
The digital data DPMA and DPMB transmitted to the signal recording / reproducing unit 101 through 81 and forming a return video signal transmitted from the signal recording / reproducing unit 101
Are converted into optical signals OSMA and OSMB, and the optical signal transmission cables 131 and 18
1, the bidirectional transmission of the multiplexed optical signal OZA and the optical signal OSMA is performed between one end and the other end of the optical signal transmission cable 131, and the optical signal transmission cable 181. Multiplexed optical signal OZB and optical signal OSM between one end and the other end of
Bidirectional transmission with B is performed.

Further, conversion of the data DVXX obtained from the camera section 100 into multiplexed optical signals OZA and OZB and digital data DPMA forming a return video signal
The conversion of the DPMB and the DPMB into the optical signals OSMA and OSMB can be performed, for example, by utilizing existing circuit components used for serial transmission of a digital video signal in accordance with HD SDI.

FIGS. 32 and 33 show claims 26 to 28 and claim 33 in the claims of the present application.
To Claim 35 and Claims 40 to 42.
An embodiment of the data transmission method according to any one of claims 58, 62 or 66 in the claims of the present application, wherein the example of the data transmission method according to any one of the inventions described above is implemented. Here is an example.

The examples shown in FIG. 32 and FIG.
31 and many parts configured in the same manner as the example shown in FIG. 31. In FIG. 32 and FIG. 33, blocks, signals or data corresponding to the blocks, signals or data shown in FIG. 30 and FIG. 30 and FIG.
1 are denoted by the same reference numerals as in 1, and redundant description thereof is omitted.

The examples shown in FIG. 32 and FIG. 33 are also similar to those of FIG.
It is assumed that bidirectional transmission of digital data forming a Cinema signal and digital data forming a digital return video signal is performed. Supplied. 38. In FIG. 38, the data DVXX is the data DC12, DC14, DC16,
The frame rate shown as DD10 and DD12 is 50 Hz or 60 Hz, the sampling frequency is 148.5 MHz, the number of valid data samples in each line is 1920, the number of valid lines in each frame is 1080, and the number of quantization bits is set. Is 10 bits, 12 bits, 14 bits or 16 bits, 4: 2: 2 format or 4: 4: 4 format D
-Any of the digital data forming the Cinema signal.

In the examples shown in FIGS. 32 and 33, the bit transmission rate obtained from E / O conversion section 213 is 1.485 Gbps, and the center wavelength is about 1.3.
The optical signal OSA2 having a value of μm is transmitted to the optical circulator 231.
It is led to.

The optical circulator 231 is similar to the optical circulator 80 in the example shown in FIG. 20, and is provided with two input / output terminals at one end.
One input / output terminal is provided on the other end. The bit transmission rate from the E / O conversion unit 213 is set to 1.485 Gbps, and the center wavelength is set to approximately 1.3 μm.
m is supplied to the optical circulator 231 through one of the two input / output terminals on one end thereof, and is thereby derived from the optical circulator 231 through one input / output terminal on the other end. You.

[0230] The optical signal OSA2 that has passed through the optical circulator 231 is guided to the multiplexing unit 212, where it is multiplexed with the optical signal OSA1 that has passed through the bidirectional WDM coupler 211. Bidirectional WDM coupler 21
1. The multiplexing unit 212 and the optical circulator 231 form an optical signal processing unit.

Also, obtained from the E / O conversion unit 223,
An optical signal OSB2 having a bit transmission rate of 1.485 Gbps and a center wavelength of about 1.3 μm is guided to the optical circulator 232.

The optical circulator 232 is similar to the optical circulator 231 and has two input / output terminals at one end and one input / output terminal at the other end. I have. And the E / O converter 2
The optical signal OSB2 having a bit transmission rate of 1.485 Gbps and a center wavelength of approximately 1.3 μm from the optical signal OSB2 is
The light is supplied to the optical circulator 232 through one of the two input / output terminals on one end thereof, and is thereby led out from the optical circulator 232 through one input / output terminal on the other end.

[0233] The optical signal OSB2 that has passed through the optical circulator 232 is guided to the multiplexing unit 222, where it is multiplexed with the optical signal OSB1 that has passed through the bidirectional WDM coupler 221. Bidirectional WDM coupler 22
1, the multiplexing unit 222 and the optical circulator 232 form an optical signal processing unit.

The multiplexed optical signal OZA transmitted from one end to the other end of the optical signal transmission cable 131 is derived from the demultiplexer 214 guided through the optical connector 133. The bit transmission rate is 1.485 Gbps. age,
The optical signal OSA2 having a center wavelength of approximately 1.3 μm is guided to the optical circulator 234. Optical circulator 23
Like the optical circulator 231, the input / output terminal 4 has two input / output terminals on one end and one input / output terminal on the other end. The optical signal OSA2 from the demultiplexing unit 214 is supplied to the optical circulator 234 through one input / output terminal on the other end, whereby the optical circulator 234 outputs one of the two input / output terminals on one end. And is led to the O / E conversion unit 216, and the O / E conversion unit 21
6 for the photoelectric conversion process. Demultiplexer 214, bidirectional WDM coupler 215, and optical circulator 23
Reference numeral 4 forms an optical signal processing unit.

The multiplexed optical signal OZB transmitted from one end to the other end of the optical signal transmission cable 181 is derived from a demultiplexer 224 guided through an optical connector 183. The bit transmission rate is 1.485 Gbps. The optical signal OSB2 having a center wavelength of about 1.3 μm is guided to the optical circulator 235. Optical circulator 235
Like the optical circulator 232, the optical circulator 232 has two input / output terminals at one end and one input / output terminal at the other end. The optical signal OSB2 from the demultiplexing unit 224 is transmitted to the optical circulator 2
It is supplied to one of the two input / output terminals on the other end side of the optical circulator 235 and is supplied to the O / E conversion unit 226 from the optical circulator 235 through one of the two input / output terminals on the one end side. And the O / E conversion unit 22
6 for the photoelectric conversion process. Demultiplexer 224, bidirectional WDM coupler 225 and optical circulator 23
Reference numeral 5 denotes an optical signal processing unit.

In addition to the above, in the examples shown in FIGS. 32 and 33, the return video signal forming section provided in the signal
Digital data D forming four return video signals, which is 20-bit word string data at 4.25 MBps
It sends out PMA1, DPMA2, DPMB1 and DPMB2.

The digital data DPMA1 obtained from the signal recording / reproducing section 101 is the same as the digital data DPMA obtained from the signal recording / reproducing section 101 in the examples shown in FIGS.
1 is supplied. Thereby, the optical signal OS in the example shown in FIGS. 30 and 31 is output from the E / O converter 227.
An optical signal OSMA1 similar to MA is obtained, and the optical signal OSMA1
The SMA 1 is transmitted from the other end of the optical signal transmission cable 131 to one end via the optical connector 133.

[0238] Digital data DPMA2 obtained from the signal recording / reproducing section 101 is supplied to a P / S conversion section 240 configured similarly to the P / S conversion section 201. P / S
In the conversion unit 240, the digital data DPMA2
Is subjected to P / S conversion to increase the bit transmission rate to 74.25M.
The serial data DSMA2 with Bps × 20 = 1.485 Gbps is formed and supplied to the E / O converter 241. The E / O conversion unit 241 includes an E / O conversion unit 213.
The serial data DSMA2 is subjected to electro-optical conversion processing to set the bit transmission rate to 1.485 Gbps. Optical signal OSMA2
To form This optical signal OSMA2 is guided to the optical circulator 234.

The bit transmission rate from the E / O converter 241 is 1.485 Gbps, and the center wavelength is approximately 1.3 μm.
m, the optical signal OSMA2 is an optical circulator 234.
Is supplied through one of the two input / output terminals on one end side thereof, and is thereby led out from the optical circulator 234 through one input / output terminal on the other end side. The optical signal OSMA2 that has passed through the optical circulator 234 passes through the demultiplexing unit 214, and further passes through the optical connector 133 together with the optical signal OSMA1 and the optical signal transmission cable 13
1 is transmitted from the other end to one end.

Digital data DPMB1 obtained from signal recording / reproducing section 101 is supplied to P / S conversion section 205, similarly to digital data DPMB obtained from signal recording / reproducing section 101 in the examples shown in FIGS. You. As a result, the E / O conversion unit 229 outputs
An optical signal OSMB1 similar to the optical signal OSMB in the example shown in FIG. 31 is obtained, and the OSMB1 is transmitted from the other end of the optical signal transmission cable 181 to one end via the optical connector 183.

The digital data DPMB2 obtained from the signal recording / reproducing unit 101 is supplied to a P / S conversion unit 242 configured similarly to the P / S conversion unit 205. P / S
In the conversion unit 242, the digital data DPMB2
Is subjected to P / S conversion to increase the bit transmission rate to 74.25M.
The serial data DSMB2 with Bps × 20 = 1.485 Gbps is formed and supplied to the E / O converter 243. The E / O conversion unit 243 includes an E / O conversion unit 223.
The optical signal forming unit is formed in the same manner as described above, and performs electro-optical conversion processing on the serial data DSMB2 to set the bit transmission rate to 1.485 Gbps and to have a center wavelength set to, for example, about 1.3 μm. Optical signal OSMB2
To form This optical signal OSMB2 is guided to the optical circulator 235.

The bit transmission rate from the E / O conversion unit 243 is 1.485 Gbps, and the center wavelength is approximately 1.3 μm.
m, the optical signal OSMB2 is an optical circulator 235
Is supplied through one of the two input / output terminals on one end thereof, and is thereby led out from the optical circulator 235 through one input / output terminal on the other end. The optical signal OSMB2 that has passed through the optical circulator 235 passes through the demultiplexer 224, and further passes through the optical connector 183, together with the optical signal OSMB1 and the optical signal transmission cable 18.
1 is transmitted from the other end to one end.

The optical signals OSMA1 and OSMA2 transmitted through the optical signal transmission cable 131 from the other end to the one end and output through the optical connector 130 are converted to the optical signal OSMA.
1 is the optical signal O in the example shown in FIGS.
Like the SMA, the bidirectional WD is transmitted through the multiplexing unit 212.
The light is guided to the M coupler 211 and the optical signal OSMA2
Is guided to the optical circulator 231 through the multiplexing unit 212.

Thus, the bidirectional WDM coupler 21
1 from the O / E conversion saddle portion 228 to which the optical signal OSMA1 that has passed through the serial data D based on the optical signal OSMA1.
SMA1 is obtained, and digital data DPMA1 forming a return video signal with a word transmission rate of 74.25 MBps is reproduced based on the serial data DSMA1 in the S / P converter 204, and supplied to the camera unit 100. You.

The optical signal OSM passed through the multiplexing section 212
A2 is supplied to the optical circulator 231 through one input / output terminal on the other end, whereby it is led out of the optical circulator 231 through the other of the two input / output terminals on one end thereof, and the O / E is output. It is led to the conversion unit 245. In the O / E converter 245, the bit transmission rate is set to 1.485 Gbps, and the center wavelength is set to approximately 1.3 μm.
m is subjected to photoelectric conversion processing on the optical signal OSMA2, and the bit transmission rate based on the optical signal OSMA2 is set to 1.48.
The 5 Gbps serial data DSMA2 is reproduced. Then, the reproduced serial data DSMA2 is
The signal is supplied to the S / P converter 246.

In S / P conversion section 246, serial data D at which the bit transmission rate is 1.485 Gbps
SMA2 is subjected to S / P conversion processing for obtaining 20-bit parallel data, and the word transmission rate based on serial data DSMA2 is set to 1.485 Gbps / 20 = 74.2.
The digital data DPMA2 forming the return video signal of 5 MBps is reproduced and supplied to the camera unit 100.

Further, the optical signals OSMB1 and OSMB2 transmitted through the optical connector 180 from the other end to the optical signal transmission cable 181 are different from the optical signals OSMB1 and OSMB1 shown in FIGS. Is guided to the bidirectional WDM coupler 221 through the multiplexing unit 222 in the same manner as the optical signal OSMB in
The SMB 2 is guided to the optical circulator 232 through the multiplexing unit 222.

Thus, the bidirectional WDM coupler 22
The serial data D based on the optical signal OSMB1 from the O / E conversion saddle unit 230 to which the optical signal OSMB1 that has passed through
SMB1 is obtained. Further, in the S / P converter 208, digital data DPMB1 forming a return video signal having a word transmission rate of 74.25 MBps based on the serial data DSMB1 is reproduced and supplied to the camera unit 100. You.

Also, the optical signal OSM passed through the multiplexing section 222
B2 is supplied to the optical circulator 232 through one input / output terminal on the other end side, whereby it is led out of the optical circulator 232 through the other of the two input / output ends on the one end side thereof, and the O / E is output. It is led to the conversion unit 247. In the O / E converter 247, the bit transmission rate is set to 1.485 Gbps, and the center wavelength is set to approximately 1.3 μm.
m is subjected to photoelectric conversion processing on the optical signal OSMB2, and the bit transmission rate based on the optical signal OSMB2 is 1.48.
Reproduce the serial data DSMB2 of 5 Gbps. Then, the reproduced serial data DSMB2 is
It is supplied to the S / P converter 248.

At S / P conversion section 248, serial data D at which the bit transmission rate is 1.485 Gbps
The SMB2 is subjected to S / P conversion processing for obtaining 20-bit parallel data, and the word transmission rate based on the serial data DSMB2 is set to 1.485 Gbps / 20 = 74.2.
Digital data DPMB2 forming a return video signal of 5 MBps is reproduced and supplied to the camera unit 100.

The rest is the same as the examples shown in FIGS. 30 and 31.

In the example shown in FIGS. 32 and 33 as described above, data DV obtained from camera
XX is the data DC12, DC14,
DC16, DD10 and DD12 are converted into multiplexed optical signals OZA and OZB under any one of
Optical signal transmission cables 131 and 1 from the camera unit 100 side
The digital data DPMA1 and DPMA transmitted to the signal recording / reproducing unit 101 through 81 and forming a return video signal transmitted from the signal recording / reproducing unit 101.
2, DPMB1 and DPMB2 are optical signals OSMA1,
Converted into OSMA2, OSMB1 and OSMB2,
Optical signal transmission cable 131 from signal recording / reproducing unit 101 side
And 181 to the camera unit 100 side, and between the one end and the other end of the optical signal transmission cable 131, the multiplexed optical signal OZA and the optical signals OSMA1 and OSMA
2 is performed, and between the one end and the other end of the optical signal transmission cable 181, bidirectional transmission of the multiplexed optical signal OZB and the optical signals OSMB1 and OSMB2 is performed.

The conversion of the data DVXX obtained from the camera unit 100 into multiplexed optical signals OZA and OZB, and the digital data DPMA forming the return video signal
1, optical signals O of DPMA2, DPMB1 and DPMB2
The conversion into SMA1, OSMA2, OSMB1 and OSMB2 can be performed using existing circuit components used for serial transmission of digital video signals in accordance with HD SDI, for example.

[0254]

As is clear from the above description, the data transmission method according to the invention described in any one of claims 1 to 21 in the claims of the present application, or claims 43 to 43 54, the frame rate is 24 Hz, 25 Hz or 30 Hz, the number of effective lines in each frame is 1080, and the number of effective data samples in each line is 1920 samples. Is set to 10 bits, 12 bits,
First and second serial data based on digital data forming a digital video signal of 4: 2: 2 format or 4: 4: 4 format having 14 bits or 16 bits, and third serial data different from them. Or third
And the fourth serial data are converted into an optical signal and bidirectionally transmitted between one end and the other end of the common optical signal transmission cable. Then, at the transmission destination of each optical signal through the common optical signal transmission cable, the first and second serial data and the third serial data or the third and fourth serial data are reproduced respectively.

In this case, the bidirectional transmission of the first and second serial data and the third serial data or the third and fourth serial data is performed, for example, by serial transmission of digital video signals in accordance with HD SDI. Can be performed by utilizing the existing circuit components used for the above.

Further, the data transmission method according to any one of claims 22 to 42 in the claims of the present application as described above, or any one of claims 55 to 66 In the data transmission device according to the invention described in
Hz or 60 Hz, the number of effective lines in each frame is set to 1080, the number of effective data samples in each line is set to 1920 samples, and the number of quantization bits is set to 10, 12, 14, or 1 bit.
First, second, third, and fourth serial data based on digital data forming a digital video signal of 4: 2: 2 format or 4: 4: 4 format having 6 bits, and a fifth serial data different from them. And the sixth serial data or the fifth,
The sixth, seventh, and eighth serial data are converted into optical signals and bidirectionally transmitted using two optical signal transmission cables. Then, at the transmission destination of each optical signal through each of the two optical signal transmission cables, the first, second, third
And the fourth serial data and the fifth and sixth serial data or the fifth, sixth, seventh and eighth serial data are reproduced, respectively.

At this time, the first, second, third and fourth
The bidirectional transmission of the serial data of the first and fifth and sixth serial data or the fifth, sixth, seventh and eighth serial data is used, for example, for serial transmission of digital video signals in accordance with HD SDI. This can be done using existing circuit components.

The data transmission method or the data transmission apparatus according to the invention described in the claims of the present application is capable of transmitting, for example, the number of quantization bits obtained from each of a plurality of video cameras constituting a camera unit. A digital signal forming a D-Cinema signal having 10 bits or more and a plurality of optical signals obtained by converting each of digital data forming a digital return video signal between a camera unit and a signal recording / reproducing unit. When applied to bidirectional transmission using an optical signal transmission cable in
The bidirectional transmission using an optical signal transmission cable between the camera unit and the signal recording / reproducing unit of such a plurality of optical signals,
Utilizing existing circuit components, it can be performed efficiently to minimize the number of optical signal transmission cables,
Costs can be effectively reduced.

[Brief description of the drawings]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view showing an embodiment of the present invention; FIG.
Claims 43 and 43 in the claims of the present application, wherein the example of the data transmission method according to any one of claims 3 to 17, claim 20 and claim 21 is implemented.
FIG. 42 is a block connection diagram illustrating an example of a data transmission device according to the invention described in claim 44, claim 47, claim 48, claim 51, or claim 52.

FIG. 2 is a conceptual diagram showing data used for explaining the operation of a data processing unit in the example shown in FIG.

FIG. 3 is a conceptual diagram showing data used for explaining the operation of a data processing unit in the example shown in FIG. 1;

FIG. 4 is a conceptual diagram showing data used for explaining the operation of the data processing unit in the example shown in FIG.

FIG. 5 is a conceptual diagram showing data used for explaining the operation of the data processing unit in the example shown in FIG. 1;

FIG. 6 is a conceptual diagram showing data used for explaining the operation of the data processing unit in the example shown in FIG. 1;

FIG. 7 is a conceptual diagram showing data used for explaining the operation of the data processing unit in the example shown in FIG.

FIG. 8 is a conceptual diagram showing data used for explaining the operation of the data processing unit in the example shown in FIG.

9 is a block connection diagram illustrating a specific configuration of an E / O conversion unit in the example illustrated in FIG.

FIG. 10 shows a 1.55 μm used in the specific configuration of FIG. 9;
FIG. 4 is a characteristic diagram used for describing a band DFB laser diode.

11 is a block connection diagram showing a specific configuration of an E / O conversion unit in the example shown in FIG.

FIG. 12 shows 1.48 μm used in the specific configuration of FIG.
FIG. 4 is a characteristic diagram used for describing an m-band DFB laser diode.

13 is a block connection diagram showing a specific configuration of a multiplexing unit in the example shown in FIG.

14 is a block connection diagram illustrating a specific configuration of a bidirectional WDM coupler in the example illustrated in FIG.

15 is a block connection diagram illustrating a specific configuration of a bidirectional WDM coupler in the example illustrated in FIG.

FIG. 16 is a block connection diagram showing a specific configuration of a demultiplexing unit in the example shown in FIG.

FIG. 17 is a block connection diagram showing a specific configuration of an E / O converter in the example shown in FIG.

FIG. 18 shows the 1.3 μm used in the specific configuration of FIG.
FIG. 4 is a characteristic diagram used for describing a band FP laser diode.

FIG. 19: Claim 4 in the claims of the present application
An example of the data transmission method according to any one of claims 6, 7, 7, 11, 13, 14, 18, 20, or 21 is implemented. Claim 45 in the claims of the present application,
FIG. 48 is a block connection diagram illustrating an example of a data transmission device according to the invention described in claim 49 or 53.

FIG. 20 is a diagram showing data according to any one of claims 5 to 7, claims 12 to 14, and claims 19 to 21 in the claims of the present application. FIG. 54 is a block connection diagram illustrating an example of a data transmission device according to the invention described in Claims 46, 50, or 54 in the claims of the present application, in which the example of the transmission method is implemented.

FIG. 21. Claim 22 in the claims of the present application
To claim 24, from claim 27 to claim 31,
Claims 55 and 56 in the claims of the present application, in which the example of the data transmission method according to any one of claims 34 to 38, 41 and 42 is implemented. And FIG. 59 is a block connection diagram showing a portion of an example of a data transmission device according to the invention described in claim 59, claim 60, claim 63 or claim 64.

FIG. 22. Claim 22 in the claims of the present application
To claim 24, from claim 27 to claim 31,
Claims 55 and 56 in the claims of the present application, in which the example of the data transmission method according to any one of claims 34 to 38, 41 and 42 is implemented. And FIG. 59 is a block connection diagram showing a portion of an example of a data transmission device according to the invention described in claim 59, claim 60, claim 63 or claim 64.

FIG. 23 is a conceptual diagram showing data used for explaining the operation of the data processing unit in the examples shown in FIGS. 21 and 22.

FIG. 24 is a conceptual diagram showing data used for explaining the operation of the data processing unit in the examples shown in FIGS. 21 and 22.

FIG. 25 is a conceptual diagram showing data used for explaining the operation of the data processing unit in the examples shown in FIGS. 21 and 22.

FIG. 26 is a conceptual diagram showing data used for explaining the operation of the data processing unit in the examples shown in FIGS. 21 and 22.

FIG. 27 is a conceptual diagram showing data used for explaining the operation of the data processing unit in the examples shown in FIGS. 21 and 22.

FIG. 28 is a conceptual diagram showing data used for explaining the operation of the data processing unit in the examples shown in FIGS. 21 and 22.

FIG. 29 is a conceptual diagram showing data used for explaining the operation of the data processing unit in the examples shown in FIGS. 21 and 22.

FIG. 30. Claim 2 in the claims of the present application
5, Claim 27, Claim 28, Claim 32, Claim 3
In the claims of the present application, the example of the data transmission method according to any one of claims 4, 35, 39, 41, and 42 is implemented. 61 is a block connection diagram illustrating a portion of an example of a data transmission device according to the invention described in 61 or 65. FIG.

FIG. 31. Claim 2 in the claims of the present application
5, Claim 27, Claim 28, Claim 32, Claim 3
In the claims of the present application, the example of the data transmission method according to any one of claims 4, 35, 39, 41, and 42 is implemented. 61 is a block connection diagram illustrating a portion of an example of a data transmission device according to the invention described in 61 or 65. FIG.

FIG. 32. Claim 26 in the claims of the present application
To claim 28, from claim 33 to claim 35,
And claim 58, claim 62, or claim 66 in the claims of the present application, in which the example of the data transmission method according to any one of claims 40 to 42 is implemented. FIG. 2 is a block connection diagram illustrating a portion of an example of a data transmission device according to the invention.

FIG. 33. Claim 26 in the claims of the present application
To claim 28, from claim 33 to claim 35,
And claim 58, claim 62, or claim 66 in the claims of the present application, in which the example of the data transmission method according to any one of claims 40 to 42 is implemented. FIG. 2 is a block connection diagram illustrating a portion of an example of a data transmission device according to the invention.

FIG. 34 is a conceptual diagram provided for describing an example of a data format of an HD digital video signal.

FIG. 35 is a conceptual diagram explaining an example of a data format of an HD digital video signal.

FIG. 36 is a characteristic diagram showing an attenuation characteristic of a quartz-based SMF.

FIG. 37 is a characteristic diagram showing dispersion characteristics of a quartz-based SMF.

FIG. 38 is a table provided for describing digital data forming a digital video signal.

[Explanation of symbols]

10: camera unit, 11: signal recording / reproducing unit,
12, 102 ... data processing unit, 13, 18, 6
5,83,103,108,153,158,201,
205, 208, 240, 242... P / S converter,
14, 19, 66, 69, 73, 77, 84, 10
4,109,154,159,202,206,21
3,223,227,229,241,243 ... E
/ O converter, 15, 20, 67 ... laser driver,
16 ... 1.55 μm band DFB laser diode,
17, 72, 107, 157, 212, 222... Combining part, 21... 1.48 μm band DFB laser diode,
3,46,48,50,53,55,56,130,1
33,180,183 ... optical connector, 30,4
2,71,75,120,132,170,182,2
··· 11,215, 221,225 ··· bidirectional WDM coupler, 41,131,181 ··· optical signal transmission cable,
..Demultiplexers, 57,58,76,79,85,14
7,148,197,198,203,207,21
6,226,228,230,245,247 ... O
/ E converter, 59, 61, 70, 86, 149, 15
1,199,200,204,246,248 ... S
/ P conversion unit, 60, 150 ... data reproduction processing unit,
68 ... 1.3 μm band FP laser diode, 8
0,81,231-235 ... optical circulator,
100: camera unit, 101: signal recording / reproducing unit

Claims (66)

[Claims] 1. The frame rate is set to 24 Hz, 25 Hz or 30 Hz, the number of effective lines in each frame is set to 1080, the number of effective data samples in each line is set to 1920, and the number of quantization bits is set to 1
A digital video signal consisting of 2 bits, 14 bits or 16 bits is formed, and is formed with a parallel arrangement of a luminance signal data sequence and a color difference signal data sequence, each of which is a 12-bit, 14-bit or 16-bit word string data. To the 24-bit, 28-bit or 32-bit parallel data, the 12-bit, 14-bit or 16-bit word constituting each of the luminance signal data sequence and the chrominance signal data sequence is divided into upper 10 bits and lower 2 bits, 4 bits or 6 bits. The first word string data based on the upper 10 bits obtained by performing the process of dividing the data into bits, and the second word string data based on the lower 2 bits, 4 bits or 6 bits, and the auxiliary bits And the first and second words based on the first and second word string data, respectively. 2) converting the first serial data into a first optical signal having a first center wavelength, and converting the second serial data into a second optical signal having a second center wavelength different from the first center wavelength. The optical signal is converted into a second optical signal having a center wavelength, the first optical signal and the second optical signal are combined to obtain a multiplexed optical signal, and the multiplexed optical signal is transmitted to an optical signal transmission cable. And transmitting the third serial data from the one end to the other end of the optical signal transmission cable, the third serial data having a third central wavelength different from each of the first and second central wavelengths. The third optical signal is transmitted to the optical signal transmission cable and transmitted from the other end of the optical signal transmission cable to one end, and the third optical signal is transmitted to the other end of the optical signal transmission cable. When reproducing the first and second serial data based on the transmitted multiplexed optical signal, Moni, third data transmission method for reproducing serial data based on the optical signal at one end has been the third optical signal transmitted to the transmission cable. 2. The method according to claim 1, wherein each of the first and second word string data is
2. The data transmission method according to claim 1, wherein the data transmission rate is 20-bit word string data having a word transmission rate of 74.25 MBps. 3. A multiplexed optical signal is supplied from a first bidirectional wavelength multiplexing coupler having first, second and third input / output terminals to said third input / output terminal from said first input / output terminal. To the other end of the optical signal transmission cable, and from the other end of the optical signal transmission cable, a second bidirectional wavelength having fourth, fifth, and sixth input / output ends. A multiplex coupler communicates from the sixth input / output terminal to the fifth input / output terminal, and a third optical signal is transmitted from the second bidirectional wavelength multiplex coupler to the fifth input / output terminal. The first input / output terminal is guided to the other end of the optical signal transmission cable, and the first input / output terminal is connected to the first input / output terminal.
3. The data transmission method according to claim 1, wherein the bidirectional wavelength multiplexing coupler is connected from the third input / output terminal to the second input / output terminal. 4. A first bidirectional wavelength-division multiplexing coupler having first, second and third input / output terminals is supplied from a first input / output terminal to the third input terminal. After being connected to the output terminal, the optical signal is multiplexed with the second optical signal to obtain a multiplexed optical signal. Obtaining first and second optical signals;
The first optical signal obtained by the demultiplexing is divided into fourth, fifth and sixth optical signals.
A second bidirectional wavelength-division multiplexing coupler having an input / output end of the second input / output terminal is derived from the sixth input / output end as communicating with the fifth input / output end, and a third optical signal is output from the second input / output end. After passing the bidirectional wavelength multiplexing coupler from the fourth input / output end to the sixth input / output end, it is guided to the other end of the optical signal transmission cable. The third optical signal transmitted to one end is connected to the first optical signal.
3. The data transmission method according to claim 1, wherein the bidirectional wavelength division multiplexing coupler is derived from the third input / output terminal as communicating with the second input / output terminal. 5. A second optical signal, which is multiplexed with a first optical signal through a first bidirectional wavelength multiplexing coupler, into first and second optical signals.
And a first optical circulator having a third input / output terminal communicates from the first input / output terminal to the third input / output terminal. A second optical circulator having fourth, fifth, and sixth input / output terminals is derived from the sixth input / output terminal as communicating with the fifth input / output terminal, and the fourth serial data is output to the fifth input / output terminal. The optical signal is converted into a fourth optical signal having a center wavelength of 2, and the fourth optical signal is passed through the second optical circulator from the fourth input / output terminal to the sixth input / output terminal. Then, the fourth optical signal is transmitted to the optical signal transmission cable, transmitted from the other end to the one end of the optical signal transmission cable, and transmitted to the one end of the optical signal transmission cable. From the third input / output terminal to the second input / output terminal. Data transmission method according to claim 4, wherein the deriving as Jill ones. 6. The method according to claim 1, further comprising modulating a laser beam emitted by first laser means for emitting a laser beam having a first center wavelength in accordance with the first serial data.
By converting the serial data into a first optical signal and modulating the laser light emitted by the second laser means for emitting a laser light having a second center wavelength in accordance with the second serial data. 2 serial data
And further modulates the laser light emitted by the third laser means for emitting a laser light having a third center wavelength in accordance with the third serial data. The data transmission method according to any one of claims 1 to 5, wherein the data is converted into a third optical signal. 7. The method according to claim 1, wherein each of the first, second and third laser means is selected from a 1.55 μm band laser diode, a 1.48 μm band laser diode and a 1.3 μm band laser diode. Item 7. The data transmission method according to Item 6. 8. The frame rate is set to 24 Hz, 25 Hz or 30 Hz, the number of effective lines in each frame is set to 1080, the number of effective data samples in each line is set to 1920, and the number of quantization bits is set to 1
A digital video signal having 0 bits is formed, each of which has 10 bits.
The 30-bit parallel data formed by the parallel arrangement of the green primary color signal data sequence, the blue primary color signal data sequence, and the red primary color signal data sequence, which are bit word sequence data, are combined with the green primary color signal data sequence and the blue primary color signal data sequence. A 10-bit word forming the green primary color signal data sequence and a 10-bit word forming the blue primary color signal data sequence and the 10-bit word forming the red primary color signal data sequence, respectively. And a 10-bit word forming the auxiliary data sequence and another part of the 10-bit word forming each of the blue primary color signal data sequence and the red primary color signal data sequence. Based on each of the first and second word groups. Subjected to a treatment to obtain over de column data,
Forming first and second word string data; obtaining first and second serial data based on the first and second word string data, respectively; converting the first serial data to a first center wavelength; And converts the second serial data into a second optical signal having a second central wavelength different from the first central wavelength. Multiplexing the second optical signal to obtain a multiplexed optical signal, sending the multiplexed optical signal to an optical signal transmission cable, and transmitting the multiplexed optical signal from one end to the other end of the optical signal transmission cable; 3 is converted into a third optical signal having a third central wavelength different from each of the first and second central wavelengths, and the third optical signal is transmitted to the optical signal transmission cable. Then, the optical signal is transmitted from the other end to the one end of the optical signal transmission cable. The first and second serial data based on the multiplexed optical signal transmitted to the other end of the transmission cable are reproduced, and the first and second serial data are reproduced based on the third optical signal transmitted to one end of the optical signal transmission cable. 3. A data transmission method for reproducing serial data. 9. Each of the first and second word string data is
9. The data transmission method according to claim 8, wherein the data transmission rate is 20-bit word string data having a word transmission rate of 74.25 MBps. 10. A multiplexed optical signal is supplied from a first bidirectional wavelength multiplexing coupler having first, second and third input / output terminals to said third input / output terminal from said first input / output terminal. To the other end of the optical signal transmission cable, and from the other end of the optical signal transmission cable, a second bidirectional wavelength having fourth, fifth, and sixth input / output ends. A multiplex coupler communicates from the sixth input / output terminal to the fifth input / output terminal. The first bidirectional wavelength-division multiplexing coupler is connected to the third input / output terminal through one end of the optical signal transmission cable. 9. The apparatus according to claim 8, wherein said input / output terminal communicates with said second input / output terminal. Data transmission method of 9, wherein. 11. A first bidirectional wavelength-division multiplexing coupler having first, second and third input / output terminals is supplied from a first input / output terminal to said third input / output terminal. After being connected to the output terminal, the multiplexed optical signal is multiplexed with the second optical signal to obtain a multiplexed optical signal. The first and second optical signals are obtained, and the first optical signal obtained by the demultiplexing is converted into a second bidirectional wavelength-division multiplex coupler having fourth, fifth and sixth input / output terminals. of derived from the input and output terminals as leading to the fifth input and output ends, enter the third optical signal to said second bi-directional wavelength division multiplexing coupler from the fourth output terminal of the sixth After being guided to the output end, it is guided to the other end of the optical signal transmission cable, and transmitted to one end of the optical signal transmission cable. 2. The method according to claim 1, wherein the third optical signal is derived from the third bidirectional wavelength multiplexing coupler through the third input / output terminal to the second input / output terminal. 10. The data transmission method according to 8 or 9. 12. A first optical signal having first, second and third input / output terminals, the second optical signal being multiplexed with the first optical signal through the first bidirectional wavelength multiplexing coupler. Is connected from the first input / output terminal to the third input / output terminal, and the second optical signal obtained by the demultiplexing is transmitted to the fourth and fourth input / output terminals.
A second optical circulator having fifth and sixth input / output terminals is derived from the sixth input / output terminal as communicating with the fifth input / output terminal, and the fourth serial data is output to the second optical circulator. A fourth optical signal having a center wavelength is converted, and the fourth optical signal is passed through the second optical circulator from the fourth input / output terminal to the sixth input / output terminal. After doing
The fourth optical signal transmitted to the optical signal transmission cable is transmitted from the other end to the one end of the optical signal transmission cable, and the fourth optical signal transmitted to one end of the optical signal transmission cable is transmitted to the first optical signal transmission cable. 12. The data transmission method according to claim 11, wherein the optical circulator is derived from the third input / output terminal as being connected to the second input / output terminal. 13. The first serial data is modulated by modulating a laser beam emitted by a first laser means for emitting a laser beam having a first center wavelength according to the first serial data. The second serial data is converted into an optical signal, and the second serial data is converted to a second serial data by modulating a laser beam emitted by a second laser unit that emits a laser beam having a second center wavelength according to the second serial data. And further modulates the laser light emitted by the third laser means for emitting a laser light having a third center wavelength in accordance with the third serial data. 13. The data transmission method according to claim 8, wherein the data is converted into a third optical signal. 14. A laser device according to claim 1, wherein each of said first, second and third laser means is selected from a 1.55 μm band laser diode, a 1.48 μm band laser diode and a 1.3 μm band laser diode. Item 14. The data transmission method according to Item 13. 15. A digital video having a frame rate of 24 Hz, 25 Hz or 30 Hz, an effective number of lines in each frame set to 1080 lines, an effective data sample number in each line set to 1920 samples, and a quantization bit number of 12 bits. Signals, each one
The green primary color signal data sequence and the blue primary color signal data are converted into 36-bit parallel data formed by arranging a green primary color signal data sequence, a blue primary color signal data sequence, and a red primary color signal data sequence as 2-bit word string data in parallel. Each of the 12-bit words constituting each of the series and the red primary color signal data sequence is divided into upper 10 bits and lower 2 bits, and a plurality of upper 10 bits divided from the green primary color signal data sequence and the blue primary color signal are divided. Word string data based on a part of a plurality of upper 10 bits divided from each of the data sequence and the red primary color signal data sequence;
Another part of a plurality of upper 10 bits divided from each of the blue primary color signal data sequence and the red primary color signal data sequence, and divided from the green primary color signal data sequence, the blue primary color signal data sequence, and the red primary color signal data sequence To obtain word string data based on the plurality of lower two bits and the auxiliary bits, thereby forming first and second word string data, based on the first and second word string data, respectively. Obtaining first and second serial data, converting the first serial data into a first optical signal having a first center wavelength, and converting the second serial data into the first center wavelength. The optical signal is converted into a second optical signal having a different second center wavelength, the first optical signal and the second optical signal are multiplexed to obtain a multiplexed optical signal, and the multiplexed optical signal is transmitted as an optical signal. Out to the cable, The third serial data is transmitted from one end to the other end of the optical signal transmission cable, and is converted into a third optical signal having a third center wavelength different from each of the first and second center wavelengths. Then, the third optical signal is transmitted to the optical signal transmission cable, transmitted from the other end to the one end of the optical signal transmission cable, and transmitted to the other end of the optical signal transmission cable. A data transmission method for reproducing first and second serial data based on the multiplexed optical signal and reproducing third serial data based on the third optical signal transmitted to one end of the optical signal transmission cable. . 16. Each of the first and second word string data has a word transmission rate of 74.25 MBps.
2. The method according to claim 1, wherein the data is bit word string data.
6. The data transmission method according to 5. 17. A multiplexed optical signal is supplied from a first bidirectional wavelength multiplexing coupler having first, second, and third input / output terminals to said third input / output terminal from said first input / output terminal. To the other end of the optical signal transmission cable, and from the other end of the optical signal transmission cable, a second bidirectional wavelength having fourth, fifth, and sixth input / output ends. A multiplex coupler communicates from the sixth input / output terminal to the fifth input / output terminal, and a third optical signal is transmitted from the second bidirectional wavelength multiplex coupler to the fifth input / output terminal. The first bidirectional wavelength-division multiplexing coupler is connected to the third input / output terminal through one end of the optical signal transmission cable. 16. An apparatus according to claim 15, wherein said input / output terminal communicates with said second input / output terminal. Data transmission method for the other 16, wherein. 18. A first optical signal is supplied to a first bidirectional wavelength multiplexing coupler having first, second, and third input / output terminals from the first input / output terminal to the third input / output terminal. After being connected to the output terminal, the optical signal is multiplexed with the second optical signal to obtain a multiplexed optical signal, and the multiplexed optical signal transmitted to the other end of the optical signal transmission cable is demultiplexed to obtain the multiplexed optical signal. The first and second optical signals are obtained, and the first optical signal obtained by the demultiplexing is converted into a second bidirectional wavelength-division multiplex coupler having fourth, fifth and sixth input / output terminals. From the input / output end of the second input / output terminal to the fifth input / output end, and the third optical signal is transmitted from the second input / output terminal to the sixth input / output terminal from the fourth input / output end. After passing to the output end, it is guided to the other end of the optical signal transmission cable, and transmitted to one end of the optical signal transmission cable. 2. The method according to claim 1, wherein the third optical signal is derived from the third bidirectional wavelength multiplexing coupler through the third input / output terminal to the second input / output terminal. 17. The data transmission method according to 15 or 16. 19. A first optical signal having first, second, and third input / output terminals, the second optical signal being multiplexed with the first optical signal through the first bidirectional wavelength multiplexing coupler. Is connected from the first input / output terminal to the third input / output terminal, and the second optical signal obtained by the demultiplexing is transmitted to the fourth and fourth input / output terminals.
A second optical circulator having fifth and sixth input / output terminals is derived from the sixth input / output terminal as communicating with the fifth input / output terminal, and the fourth serial data is output to the second optical circulator. A fourth optical signal having a center wavelength is converted, and the fourth optical signal is passed through the second optical circulator from the fourth input / output terminal to the sixth input / output terminal. After doing
The fourth optical signal transmitted to the optical signal transmission cable is transmitted from the other end to the one end of the optical signal transmission cable, and the fourth optical signal transmitted to the one end of the optical signal transmission cable is transmitted to the first optical signal transmission cable. 19. The data transmission method according to claim 18, wherein said optical circulator is derived from said third input / output terminal as being connected to said second input / output terminal. 20. A method for modulating a laser beam emitted by a first laser means for emitting a laser beam having a first center wavelength in accordance with the first serial data, thereby converting the first serial data to a first serial data. The second serial data is converted into an optical signal, and the second serial data is converted to a second serial data by modulating a laser beam emitted by a second laser unit that emits a laser beam having a second center wavelength according to the second serial data. And further modulates the laser light emitted by the third laser means for emitting a laser light having a third center wavelength in accordance with the third serial data. 20. The data transmission method according to claim 15, wherein the data transmission is converted into a third optical signal. 21. The first, second and third laser means are each selected from a 1.55 μm band laser diode, a 1.48 μm band laser diode and a 1.3 μm band laser diode. Item 21. A data transmission method according to Item 20. 22. A frame rate of 50 Hz or 60 Hz.
Hz, and the number of effective lines in each frame is 1080
Line, the number of valid data samples in each line is 19
A luminance signal data sequence and a chrominance difference which are set to 20 samples and form a digital video signal having a quantization bit number of 12, 14, or 16 bits, each of which is a 12-bit, 14-bit, or 16-bit word string data The 24-bit, 28-bit or 32-bit parallel data formed in parallel arrangement with the signal data series is subjected to a process of sequentially allocating each line portion to a first group and a second group, and the first group is processed. First word string data based on data forming a group;
Forming second word string data based on the data forming the second group, and 12 bits and 14 bits forming the luminance signal data sequence and the chrominance signal data sequence in the first word string data, respectively.
A bit or 16-bit word is divided into upper 10 bits and lower 2 bits, 4 bits or 6 bits, and a third bit based on the divided upper 10 bits is processed.
And the fourth word string data based on the divided lower 2 bits, 4 bits or 6 bits and the auxiliary bits, and the luminance signal data sequence and color difference in the second word string data. 12 bits, 14 bits constituting the signal data sequence
A bit or 16-bit word is divided into upper 10 bits and lower 2 bits, 4 bits, or 6 bits, and a fifth or fifth bit based on the divided upper 10 bits is processed.
And the sixth word string data based on the divided lower 2 bits, 4 bits or 6 bits and the auxiliary bits, and the third, fourth, fifth and sixth word strings are formed. Obtaining first, second, third and fourth serial data respectively based on the data, converting the first serial data into a first optical signal having a first center wavelength, The data is converted into a second optical signal having a second central wavelength different from the first central wavelength, and the first optical signal and the second optical signal are multiplexed to form a first multiplexed signal. Obtaining an optical signal, transmitting the first multiplexed optical signal to a first optical signal transmission cable,
From one end of the optical signal transmission cable to the other end, converting the third serial data into a third optical signal having a third center wavelength, and converting the fourth serial data into the third optical signal. The third optical signal is converted into a fourth optical signal having a fourth central wavelength different from the third central wavelength, and the third optical signal and the fourth optical signal are multiplexed to obtain a second multiplexed optical signal. Sending out the second multiplexed optical signal to a second optical signal transmission cable,
And transmitting the fifth serial data to a fifth optical signal having a fifth central wavelength different from each of the first and second central wavelengths. Converting, transmitting the fifth optical signal to the first optical signal transmission cable, transmitting the fifth optical signal from the other end to the one end of the first optical signal transmission cable, and transmitting the sixth serial data to the first optical signal transmission cable. Converting the sixth optical signal into a sixth optical signal having a sixth central wavelength different from each of the third and fourth central wavelengths, transmitting the sixth optical signal to the second optical signal transmission cable, The first and second optical signals are transmitted from the other end side of the second optical signal transmission cable to the one end side and are based on the first multiplexed optical signal transmitted to the other end side of the first optical signal transmission cable. The serial data is reproduced and transmitted to one end of the first optical signal transmission cable. 5 based on the fifth optical signal
Reproducing the third and fourth serial data based on the second multiplexed optical signal transmitted to the other end of the second optical signal transmission cable, and reproducing the second optical signal. A sixth signal based on the sixth optical signal transmitted to one end of the signal transmission cable.
A data transmission method for reproducing serial data. 23. Each of the first, second, third and fourth word string data has a word transmission rate of 74.25 Mbps.
23. The data transmission method according to claim 22, wherein the data is 20-bit word string data. 24. A first bi-directional wavelength-division multiplexing coupler having first, second and third input / output terminals is connected to said third multiplexed optical signal from said first input / output terminal to said third multiplexed optical signal. The first optical signal transmission cable is guided to one end of the first optical signal transmission cable through the input / output terminal, and the fourth, fifth, and sixth input / output terminals are connected from the other end of the first optical signal transmission cable. The second bidirectional wavelength multiplexing coupler provided from the sixth input / output terminal to the fifth input / output terminal, and the second multiplexed optical signal is transmitted to the seventh, eighth, and ninth input / output terminals. A third bidirectional wavelength-division multiplexing coupler having an input / output terminal is guided from the seventh input / output terminal to the ninth input / output terminal and guided to one end of the second optical signal transmission cable. A fourth bidirectional wavelength having tenth, eleventh, and twelfth input / output ends from the other end of the second optical signal transmission cable. A heavy coupler is connected from the twelfth input / output terminal to the eleventh input / output terminal, and a fifth optical signal is transmitted from the second bidirectional wavelength multiplexing coupler to the fourth input / output terminal. The first optical signal transmission cable is guided to the other end of the first optical signal transmission cable through the sixth input / output end, and from the one end of the first optical signal transmission cable,
The first bidirectional wavelength-division multiplexing coupler communicates from the third input / output terminal to the second input / output terminal.
Through the fourth bidirectional wavelength division multiplexing coupler from the tenth input / output end to the twelfth input / output end and to the other end of the second optical signal transmission cable. And at the same time, from one end of the second optical signal transmission cable,
24. The data transmission method according to claim 22, wherein the third bidirectional wavelength division multiplexing coupler communicates from the ninth input / output terminal to the eighth input / output terminal. 25. A first optical signal is supplied to a first bidirectional wavelength-division multiplexing coupler having first, second and third input / output terminals from the first input / output terminal to the third input / output terminal. After being connected to the output end, the second multiplexed optical signal is multiplexed with the second optical signal to obtain a first multiplexed optical signal, and the first multiplexed optical signal transmitted to the other end of the first optical signal transmission cable is transmitted. The first and second optical signals are obtained by demultiplexing the optical signal, and the first optical signal obtained by the demultiplexing is converted to a second signal having fourth, fifth and sixth input / output terminals. The directional wavelength multiplexing coupler is connected to the fifth input / output terminal through the fifth input / output terminal.
The third optical signal is output to a third bidirectional wavelength multiplexing coupler having seventh, eighth, and ninth input / output terminals. After being connected from the end to the ninth input / output end, it is combined with the fourth optical signal to obtain a second multiplexed optical signal and transmitted to the other end of the second optical signal transmission cable. The second and third multiplexed optical signals are demultiplexed to obtain the third and fourth optical signals, and the third optical signals obtained by the demultiplexing are converted into tenth, eleventh and twelfth optical signals.
A fourth bidirectional wavelength-division multiplexing coupler having the input / output end of the above is derived from the twelfth input / output end as communicating with the eleventh input / output end, and the fifth optical signal is output from the second input / output end. After passing the bidirectional wavelength multiplexing coupler from the fourth input / output terminal to the sixth input / output terminal, the coupler is guided to the other end of the first optical signal transmission cable, and Passing the fifth optical signal transmitted to one end of the optical signal transmission cable through the first bidirectional wavelength division multiplexing coupler from the third input / output terminal to the second input / output terminal After passing the sixth optical signal through the fourth bidirectional wavelength-division multiplexing coupler from the tenth input / output terminal to the twelfth input / output terminal, The second optical signal transmission cable is guided to the other end side. The sixth optical signal transmitted to the side is derived as a signal that passes through the third bidirectional wavelength division multiplexing coupler from the ninth input / output terminal to the eighth input / output terminal. The data transmission method according to claim 22 or 23. 26. A first optical signal having first, second, and third input / output terminals, the second optical signal being multiplexed with the first optical signal through the first bidirectional wavelength multiplexing coupler. Is connected from the first input / output terminal to the third input / output terminal.
A second optical circulator having fifth and sixth input / output terminals is derived from the sixth input / output terminal as communicating with the fifth input / output terminal, and the seventh serial data is output to the second optical circulator. Converting the seventh optical signal into a seventh optical signal having a center wavelength and passing the seventh optical signal through the second optical circulator from the fourth input / output end to the sixth input / output end; After doing
The first optical signal transmission cable is sent to the first optical signal transmission cable, transmitted from the other end to the one end, and the first optical signal transmission cable is transmitted to one end of the first optical signal transmission cable. 7, the first optical circulator is connected to the third optical circulator.
A fourth optical signal, which is derived from the input / output terminal of the third optical signal and communicates with the second input / output terminal and is multiplexed with the third optical signal through the third bidirectional wavelength division multiplexing coupler, , A third optical circulator having an eighth and a ninth input / output terminal communicates from the seventh input / output terminal to the ninth input / output terminal, and a fourth optical circulator obtained by demultiplexing. A fourth optical circulator having tenth, eleventh, and twelfth input / output terminals is derived as a signal from the twelfth input / output terminal to the eleventh input / output terminal. The data is converted to an eighth optical signal having a fourth center wavelength, and the eighth optical signal is converted by the fourth optical circulator to the first optical circulator.
0 to the twelfth input / output terminal and then to the second optical signal transmission cable,
The eighth optical signal transmitted from the other end to the one end of the second optical signal transmission cable and transmitted to one end of the second optical signal transmission cable is transmitted to the third optical circulator. 26. The data transmission method according to claim 25, wherein the data is derived as being connected from the ninth input / output terminal to the eighth input / output terminal. 27. Modulating a laser beam emitted by a first laser means for emitting a laser beam having a first center wavelength in accordance with the first serial data, thereby converting the first serial data to a first serial data. The second serial data is converted into an optical signal, and the second serial data is converted to a second serial data by modulating a laser beam emitted by a second laser unit that emits a laser beam having a second center wavelength according to the second serial data. And further modulates the laser light emitted by the third laser means for emitting a laser light having a third center wavelength in accordance with the third serial data. Is converted into a third optical signal, and the laser light emitted by the fourth laser means for emitting a laser light having a fourth center wavelength in accordance with the fourth serial data is changed. By, the fourth serial data into a fourth optical signal, the fifth laser light emitted by the fifth laser means for emitting a laser beam having a fifth center wavelength in response to the serial data The modulation converts the fifth serial data into a fifth optical signal, which is further emitted by a sixth laser unit that emits a laser beam having a sixth center wavelength according to the sixth serial data. By modulating the laser light,
27. The data transmission method according to claim 22, wherein the sixth serial data is converted into a sixth optical signal. 28. Each of the first, second and third laser means is selected from a 1.55 μm band laser diode, a 1.48 μm band laser diode and a 1.3 μm band laser diode. Each of the fifth and sixth laser means is a 1.55 μm band laser diode, 1.4
28. A laser diode selected from an 8 [mu] m band laser diode and a 1.3 [mu] m band laser diode.
Data transmission method as described. 29. A frame rate of 50 Hz or 60 Hz.
Hz, and the number of effective lines in each frame is 1080
Line, the number of valid data samples in each line is 19
A green primary color signal data sequence, a blue primary color signal data sequence, and a red primary color signal data sequence, each of which is set to 20 samples and forms a 10-bit word string data, forming a digital video signal having a quantization bit number of 10 bits. Of the 30-bit parallel data formed with the parallel arrangement of the first group and the second group for each line portion, and a first group based on the data forming the first group. Forming word sequence data and second word sequence data based on the data forming the second group, wherein a green primary color signal data sequence, a blue primary color signal data sequence, and a red primary color signal in the first word sequence data are formed. Each 10-bit word constituting each of the data sequences is referred to as the 10-bit word forming the green primary color signal data sequence and the blue primary color signal data sequence. A first word group including a part of a 10-bit word forming each of a color signal data sequence and a red primary color signal data sequence, a 10-bit word forming an auxiliary data sequence, the blue primary color signal data sequence and the red primary color The signal data sequence is divided into a second word group including the other part of the 10-bit word constituting each of the signal data series,
And a process of obtaining word string data based on each of the second word group to form third and fourth word string data, and a green primary color signal data sequence, a blue primary color in the second word string data. The 10-bit words forming each of the signal data sequence and the red primary color signal data sequence constitute the 10-bit words forming the green primary color signal data sequence and the blue primary color signal data sequence and the red primary color signal data sequence, respectively. A third word group including a part of a 10-bit word, a 10-bit word forming an auxiliary data sequence, and another 10-bit word forming each of the blue primary color signal data sequence and the red primary color signal data sequence. And a fourth word group including
And a process of obtaining word string data based on each of the fourth and fourth word groups to form fifth and sixth word string data. first respectively based, second, to obtain a third and fourth serial data, said first serial data by converting the first optical signal having a first center wavelength, the second serial data second converted into an optical signal, said first optical signal and the second first-multiplexed optical signal and an optical signal multiplexing having a second center wavelength different from the first center wavelength , And sends the first multiplexed optical signal to a first optical signal transmission cable,
From one end of the optical signal transmission cable to the other end, converting the third serial data into a third optical signal having a third center wavelength, and converting the fourth serial data into the third optical signal. The third optical signal is converted into a fourth optical signal having a fourth central wavelength different from the third central wavelength, and the third optical signal and the fourth optical signal are multiplexed to obtain a second multiplexed optical signal. Sending out the second multiplexed optical signal to a second optical signal transmission cable,
And transmitting the fifth serial data to a fifth optical signal having a fifth central wavelength different from each of the first and second central wavelengths. Converting, transmitting the fifth optical signal to the first optical signal transmission cable, transmitting the fifth optical signal from the other end to the one end of the first optical signal transmission cable, and transmitting the sixth serial data to the first optical signal transmission cable. Converting the sixth optical signal into a sixth optical signal having a sixth central wavelength different from each of the third and fourth central wavelengths, transmitting the sixth optical signal to the second optical signal transmission cable, The first and second optical signals are transmitted from the other end side of the second optical signal transmission cable to the one end side and are based on the first multiplexed optical signal transmitted to the other end side of the first optical signal transmission cable. The serial data is reproduced and transmitted to one end of the first optical signal transmission cable. 5 based on the fifth optical signal
Reproducing the third and fourth serial data based on the second multiplexed optical signal transmitted to the other end of the second optical signal transmission cable, and reproducing the second optical signal. A sixth signal based on the sixth optical signal transmitted to one end of the signal transmission cable.
A data transmission method for reproducing serial data. 30. Each of the first, second, third and fourth word string data has a word transmission rate of 74.25 Mbps.
30. The data transmission method according to claim 29, wherein the data is 20-bit word string data. 31. A first bidirectional wavelength-division multiplexing coupler having first, second and third input / output terminals is supplied from said first input / output terminal to said third multiplexed optical signal. The first optical signal transmission cable is guided to one end of the first optical signal transmission cable through the input / output terminal, and the fourth, fifth, and sixth input / output terminals are connected from the other end of the first optical signal transmission cable. The second bidirectional wavelength multiplexing coupler provided from the sixth input / output terminal to the fifth input / output terminal, and the second multiplexed optical signal is transmitted to the seventh, eighth, and ninth input / output terminals. A third bidirectional wavelength-division multiplexing coupler having an input / output terminal is guided from the seventh input / output terminal to the ninth input / output terminal and guided to one end of the second optical signal transmission cable. A fourth bidirectional wavelength having tenth, eleventh, and twelfth input / output ends from the other end of the second optical signal transmission cable. A heavy coupler is connected from the twelfth input / output terminal to the eleventh input / output terminal, and a fifth optical signal is transmitted from the second bidirectional wavelength multiplexing coupler to the fourth input / output terminal. The first optical signal transmission cable is guided to the other end of the first optical signal transmission cable through the sixth input / output end, and from the one end of the first optical signal transmission cable,
The first bidirectional wavelength-division multiplexing coupler communicates from the third input / output terminal to the second input / output terminal.
Through the fourth bidirectional wavelength division multiplexing coupler from the tenth input / output end to the twelfth input / output end and to the other end of the second optical signal transmission cable. And at the same time, from one end of the second optical signal transmission cable,
Claim 29 or 30 data transmission method according to, characterized in that as communicating the third bidirectional wavelength multiplexing coupler to input and output terminals of the eighth from the output end of the ninth. 32. A first optical signal is supplied from a first bidirectional wavelength multiplexing coupler having first, second and third input / output terminals to said third input / output terminal via said first input / output terminal. After being connected to the output end, the second multiplexed optical signal is multiplexed with the second optical signal to obtain a first multiplexed optical signal, and the first multiplexed optical signal transmitted to the other end of the first optical signal transmission cable. The first and second optical signals are obtained by demultiplexing the optical signal, and the first optical signal obtained by the demultiplexing is converted to a second signal having fourth, fifth and sixth input / output terminals. The directional wavelength multiplexing coupler is connected to the fifth input / output terminal through the fifth input / output terminal.
The third optical signal is output to a third bidirectional wavelength multiplexing coupler having seventh, eighth, and ninth input / output terminals. After being connected from the end to the ninth input / output end, it is combined with the fourth optical signal to obtain a second multiplexed optical signal and transmitted to the other end of the second optical signal transmission cable. The second and third multiplexed optical signals are demultiplexed to obtain the third and fourth optical signals, and the third optical signals obtained by the demultiplexing are converted into tenth, eleventh and twelfth optical signals.
A fourth bidirectional wavelength-division multiplexing coupler having the input / output end of the above is derived from the twelfth input / output end as communicating with the eleventh input / output end, and the fifth optical signal is output from the second input / output end. After passing the bidirectional wavelength multiplexing coupler from the fourth input / output terminal to the sixth input / output terminal, the coupler is guided to the other end of the first optical signal transmission cable, and Passing the fifth optical signal transmitted to one end of the optical signal transmission cable through the first bidirectional wavelength division multiplexing coupler from the third input / output terminal to the second input / output terminal After passing the sixth optical signal through the fourth bidirectional wavelength-division multiplexing coupler from the tenth input / output terminal to the twelfth input / output terminal, The second optical signal transmission cable is guided to the other end side. The sixth optical signal transmitted to the third side is derived as a signal that passes through the third bidirectional wavelength division multiplexing coupler from the ninth input / output terminal to the eighth input / output terminal. 31. The data transmission method according to claim 29, wherein: 33. A first optical signal having first, second and third input / output terminals, the second optical signal being multiplexed with the first optical signal passing through the first bidirectional wavelength multiplexing coupler. Is connected from the first input / output terminal to the third input / output terminal.
A second optical circulator having fifth and sixth input / output terminals is derived from the sixth input / output terminal as communicating with the fifth input / output terminal, and the seventh serial data is output to the second optical circulator. Converting the seventh optical signal into a seventh optical signal having a center wavelength and passing the seventh optical signal through the second optical circulator from the fourth input / output end to the sixth input / output end; After doing
The first optical signal transmission cable is sent to the first optical signal transmission cable, transmitted from the other end to the one end, and the first optical signal transmission cable is transmitted to one end of the first optical signal transmission cable. 7, the first optical circulator is connected to the third optical circulator.
A fourth optical signal, which is derived from the input / output terminal of the third optical signal and communicates with the second input / output terminal and is multiplexed with the third optical signal through the third bidirectional wavelength division multiplexing coupler, , A third optical circulator having an eighth and a ninth input / output terminal communicates from the seventh input / output terminal to the ninth input / output terminal, and a fourth optical circulator obtained by demultiplexing. A fourth optical circulator having tenth, eleventh, and twelfth input / output terminals is derived as a signal from the twelfth input / output terminal to the eleventh input / output terminal. The data is converted to an eighth optical signal having a fourth center wavelength, and the eighth optical signal is converted by the fourth optical circulator to the first optical circulator.
0 to the twelfth input / output terminal and then to the second optical signal transmission cable,
Transmitted to the one end from the other end of the second optical signal transmission cable, the second to the eighth optical signal transmitted to one end of the optical signal transmission cable, the third optical circulator 33. The data transmission method according to claim 32, wherein the method is derived as a communication from the ninth input / output terminal to the eighth input / output terminal. 34. A method for modulating a laser beam emitted by a first laser means for emitting a laser beam having a first center wavelength according to the first serial data, thereby converting the first serial data to a first serial data. The second serial data is converted into an optical signal, and the second serial data is converted to a second serial data by modulating a laser beam emitted by a second laser unit that emits a laser beam having a second center wavelength according to the second serial data. And further modulates the laser light emitted by the third laser means for emitting a laser light having a third center wavelength in accordance with the third serial data. Is converted into a third optical signal, and the laser light emitted by the fourth laser means for emitting a laser light having a fourth center wavelength in accordance with the fourth serial data is changed. By, the fourth serial data into a fourth optical signal, the fifth laser light emitted by the fifth laser means for emitting a laser beam having a fifth center wavelength in response to the serial data The modulation converts the fifth serial data into a fifth optical signal, which is further emitted by a sixth laser unit that emits a laser beam having a sixth center wavelength according to the sixth serial data. By modulating the laser light,
34. The data transmission method according to claim 29, wherein the sixth serial data is converted into a sixth optical signal. 35. Each of the first, second and third laser means is selected from a 1.55 μm band laser diode, a 1.48 μm band laser diode and a 1.3 μm band laser diode. fifth and sixth laser means 1.55μm band laser diode, respectively of 1.4
Claim, characterized in that to select from among 8μm band laser diode and 1.3μm band laser diode 34
Data transmission method as described. 36. A frame rate of 50 Hz or 60 Hz.
Hz, and the number of effective lines in each frame is 1080
Line, the number of valid data samples in each line is 19
A green primary color signal data sequence, a blue primary color signal data sequence, and a red primary color signal data sequence each of which is set to 20 samples and has a quantization bit number of 12 bits, and forms a 12-bit word string data. Of the 36-bit parallel data formed with the parallel arrangement of the first group and the second group for each line portion, and a first group based on the data forming the first group. Forming word sequence data and second word sequence data based on the data forming the second group, wherein a green primary color signal data sequence, a blue primary color signal data sequence, and a red primary color signal in the first word sequence data are formed. Each 12-bit word constituting each of the data series is
Bits and lower 2 bits, and a plurality of upper 10 bits divided from the green primary color signal data sequence and a plurality of upper 10 bits divided from each of the blue primary color signal data sequence and the red primary color signal data sequence. The word string data based on the part, another part of a plurality of upper 10 bits divided from each of the blue primary color signal data series and the red primary color signal data series, and the green primary color signal data series and the blue primary color signal Performing a process of obtaining word string data based on a plurality of lower 2 bits and auxiliary bits divided from the data series and the red primary color signal data series to form third and fourth word string data; Each of the 12 words constituting the green primary color signal data sequence, the blue primary color signal data sequence and the red primary color signal data sequence in the two word string data, respectively. Change the bit word to the top 10
Bits and lower 2 bits, and a plurality of upper 10 bits divided from the green primary color signal data sequence and a plurality of upper 10 bits divided from each of the blue primary color signal data sequence and the red primary color signal data sequence. A word string data based on the part, another part of a plurality of upper 10 bits divided from each of the blue primary color signal data series and the red primary color signal data series, and the green primary color signal data series and the blue primary color signal. Performing a process of obtaining word string data based on a plurality of lower 2 bits and auxiliary bits divided from the data series and the red primary color signal data series to form fifth and sixth word string data; , Fourth, fifth and sixth word string data, respectively, to obtain first, second, third and fourth serial data. Converting the second serial data into a second optical signal having a second central wavelength different from the first central wavelength; The optical signal and the second optical signal are multiplexed to obtain a first multiplexed optical signal, and the first multiplexed optical signal is sent out to a first optical signal transmission cable, and
From one end of the optical signal transmission cable to the other end, converting the third serial data into a third optical signal having a third center wavelength, and converting the fourth serial data into the third optical signal. The third optical signal is converted into a fourth optical signal having a fourth central wavelength different from the third central wavelength, and the third optical signal and the fourth optical signal are multiplexed to obtain a second multiplexed optical signal. Sending out the second multiplexed optical signal to a second optical signal transmission cable,
And transmitting the fifth serial data to a fifth optical signal having a fifth central wavelength different from each of the first and second central wavelengths. Converting, transmitting the fifth optical signal to the first optical signal transmission cable, transmitting the fifth optical signal from the other end to the one end of the first optical signal transmission cable, and transmitting the sixth serial data to the first optical signal transmission cable. Converting the sixth optical signal into a sixth optical signal having a sixth central wavelength different from each of the third and fourth central wavelengths, transmitting the sixth optical signal to the second optical signal transmission cable, The first and second optical signals are transmitted from the other end side of the second optical signal transmission cable to the one end side and are based on the first multiplexed optical signal transmitted to the other end side of the first optical signal transmission cable. The serial data is reproduced and transmitted to one end of the first optical signal transmission cable. 5 based on the fifth optical signal
Reproducing the third and fourth serial data based on the second multiplexed optical signal transmitted to the other end of the second optical signal transmission cable, and reproducing the second optical signal. A sixth signal based on the sixth optical signal transmitted to one end of the signal transmission cable.
A data transmission method for reproducing serial data. 37. A first, second, respectively the third and fourth word sequence data, a word transmission rate 74.25MBps
37. The data transmission method according to claim 36, wherein the data is 20-bit word string data. 38. A first bi-directional wavelength-division multiplexing coupler having first, second and third input / output terminals is connected to said third multiplexed optical signal from said first input / output terminal to said third multiplexed optical signal. The first optical signal transmission cable is guided to one end of the first optical signal transmission cable through the input / output terminal, and the fourth, fifth, and sixth input / output terminals are connected from the other end of the first optical signal transmission cable. The second bidirectional wavelength-division multiplexing coupler is connected from the sixth input / output terminal to the fifth input / output terminal. A third bidirectional wavelength-division multiplexing coupler having an input / output terminal is guided from the seventh input / output terminal to the ninth input / output terminal and guided to one end of the second optical signal transmission cable. A fourth bidirectional wavelength having tenth, eleventh, and twelfth input / output ends from the other end of the second optical signal transmission cable. A heavy coupler is connected from the twelfth input / output terminal to the eleventh input / output terminal, and a fifth optical signal is transmitted from the second bidirectional wavelength multiplexing coupler to the fourth input / output terminal. The first optical signal transmission cable is guided to the other end of the first optical signal transmission cable through the sixth input / output end, and from the one end of the first optical signal transmission cable,
The first bidirectional wavelength-division multiplexing coupler communicates from the third input / output terminal to the second input / output terminal.
Through the fourth bidirectional wavelength division multiplexing coupler from the tenth input / output end to the twelfth input / output end and to the other end of the second optical signal transmission cable. And at the same time, from one end of the second optical signal transmission cable,
38. The data transmission method according to claim 36, wherein the third bidirectional wavelength division multiplexing coupler communicates from the ninth input / output terminal to the eighth input / output terminal. 39. A first optical signal is supplied from a first bidirectional wavelength multiplexing coupler having first, second and third input / output terminals to said third input / output terminal via said first input / output terminal. After being connected to the output end, the second multiplexed optical signal is multiplexed with the second optical signal to obtain a first multiplexed optical signal, and the first multiplexed optical signal transmitted to the other end of the first optical signal transmission cable. The first and second optical signals are obtained by demultiplexing the optical signal, and the first optical signal obtained by the demultiplexing is converted to a second signal having fourth, fifth and sixth input / output terminals. The directional wavelength multiplexing coupler is connected to the fifth input / output terminal through the fifth input / output terminal.
The third optical signal is output to a third bidirectional wavelength multiplexing coupler having seventh, eighth, and ninth input / output terminals. After being connected from the end to the ninth input / output end, it is combined with the fourth optical signal to obtain a second multiplexed optical signal and transmitted to the other end of the second optical signal transmission cable. The second and third multiplexed optical signals are demultiplexed to obtain the third and fourth optical signals, and the third optical signals obtained by the demultiplexing are converted into tenth, eleventh and twelfth optical signals.
A fourth bidirectional wavelength-division multiplexing coupler having the input / output end of the above is derived from the twelfth input / output end as communicating with the eleventh input / output end, and the fifth optical signal is output from the second input / output end. After passing the bidirectional wavelength multiplexing coupler from the fourth input / output terminal to the sixth input / output terminal, the coupler is guided to the other end of the first optical signal transmission cable, and Passing the fifth optical signal transmitted to one end of the optical signal transmission cable through the first bidirectional wavelength division multiplexing coupler from the third input / output terminal to the second input / output terminal After passing the sixth optical signal through the fourth bidirectional wavelength-division multiplexing coupler from the tenth input / output terminal to the twelfth input / output terminal, The second optical signal transmission cable is guided to the other end side. The sixth optical signal transmitted to the third side is derived as a signal that passes through the third bidirectional wavelength division multiplexing coupler from the ninth input / output terminal to the eighth input / output terminal. The data transmission method according to claim 36 or 37, wherein: 40. A first optical signal having first, second and third input / output terminals, the second optical signal being multiplexed with the first optical signal through the first bidirectional wavelength multiplexing coupler. Is connected from the first input / output terminal to the third input / output terminal, and the second optical signal obtained by the demultiplexing is transmitted to the fourth and fourth input / output terminals.
A second optical circulator having fifth and sixth input / output terminals is derived from the sixth input / output terminal as communicating with the fifth input / output terminal, and the seventh serial data is output to the second optical circulator. Converting the seventh optical signal into a seventh optical signal having a center wavelength and passing the seventh optical signal through the second optical circulator from the fourth input / output end to the sixth input / output end; After doing
The first optical signal transmission cable is sent to the first optical signal transmission cable, transmitted from the other end to the one end, and the first optical signal transmission cable is transmitted to one end of the first optical signal transmission cable. 7, the first optical circulator is connected to the third optical circulator.
A fourth optical signal, which is derived from the input / output terminal of the third optical signal and communicates with the second input / output terminal and is multiplexed with the third optical signal through the third bidirectional wavelength division multiplexing coupler, , A third optical circulator having an eighth and a ninth input / output terminal communicates from the seventh input / output terminal to the ninth input / output terminal, and a fourth optical circulator obtained by demultiplexing. A fourth optical circulator having tenth, eleventh, and twelfth input / output terminals is derived as a signal from the twelfth input / output terminal to the eleventh input / output terminal. The data is converted to an eighth optical signal having a fourth center wavelength, and the eighth optical signal is converted by the fourth optical circulator to the first optical circulator.
0 to the twelfth input / output terminal and then to the second optical signal transmission cable,
The eighth optical signal transmitted from one end of the second optical signal transmission cable to the other end of the second optical signal transmission cable is transmitted to the third optical circulator. 40. The data transmission method according to claim 39, wherein the data is derived from the ninth input / output terminal as a connection to the eighth input / output terminal. 41. Modulating a laser beam emitted by a first laser means for emitting a laser beam having a first center wavelength in accordance with the first serial data, thereby converting the first serial data to a first serial data. The second serial data is converted into an optical signal, and the second serial data is converted into a second signal by modulating a laser beam emitted by a second laser unit that emits a laser beam having a second center wavelength in accordance with the second serial data. of converted into an optical signal, further, by modulating the third laser beam emitted by the laser means for emitting a laser beam having a third center wavelength in response to a third serial data, said third serial data Is converted into a third optical signal, and the laser light emitted by the fourth laser means for emitting a laser light having a fourth center wavelength in accordance with the fourth serial data is changed. By, the fourth serial data into a fourth optical signal, the fifth laser light emitted by the fifth laser means for emitting a laser beam having a fifth center wavelength in response to the serial data The modulation converts the fifth serial data into a fifth optical signal, which is further emitted by a sixth laser unit that emits a laser beam having a sixth center wavelength according to the sixth serial data. By modulating the laser light,
41. The data transmission method according to claim 36, wherein the sixth serial data is converted into a sixth optical signal. 42. Each of the first, second and third laser means is selected from a 1.55 .mu.m band laser diode, a 1.48 .mu.m band laser diode and a 1.3 .mu.m band laser diode. Each of the fifth and sixth laser means is a 1.55 μm band laser diode, 1.4
42. A laser diode selected from an 8 [mu] m band laser diode and a 1.3 [mu] m band laser diode.
Data transmission method as described. 43. The frame rate is set to 24 Hz, 25 Hz or 30 Hz, the number of effective lines in each frame is set to 1080, the number of effective data samples in each line is set to 1920, and the number of quantization bits is set to 12, 14 or A digital video signal of 16 bits is formed, and 24 bits, 28 bits or 24 bits formed by parallel arrangement of a luminance signal data sequence and a chrominance signal data sequence, each of which is a 12-bit, 14-bit or 16-bit word string data. Processing of dividing each of the 12-bit, 14-bit, or 16-bit words constituting the luminance signal data sequence and the color difference signal data sequence into 32-bit parallel data into upper 10 bits and lower 2 bits, 4 bits, or 6 bits. And divided A data processing unit for forming a first word string data based on the 10th bit and a second word string data based on the divided lower 2 bits, 4 bits or 6 bits and auxiliary bits; A parallel / serial converter that obtains first and second serial data based on the second word string data, and a first converter that converts the first serial data into a first optical signal having a first center wavelength. An optical signal forming unit for converting the second serial data into a second optical signal having a second central wavelength different from the first central wavelength; and the first optical signal forming unit. The optical signal and the second optical signal are multiplexed to obtain a multiplexed optical signal, and the multiplexed optical signal is sent out to the optical signal transmission cable, from one end of the optical signal transmission cable to the other end. A first optical signal processing unit for transmission; A third optical signal forming unit that converts the serial data of the third optical signal into a third optical signal having a third central wavelength different from each of the first and second central wavelengths; A second optical signal processing unit for transmitting to the optical signal transmission cable and transmitting from the other end to the one end of the optical signal transmission cable; and the multiplexed light transmitted to the other end of the optical signal transmission cable. A first data reproducing unit that reproduces first and second serial data based on a signal;
Second reproducing the third serial data based on the optical signal of
And a data reproducing unit. 44. A multiplexing means for multiplexing the first and second optical signals to obtain a multiplexed optical signal, the first optical signal processing unit comprising:
A second input / output terminal for transmitting the multiplexed optical signal from the first input / output terminal to the third input / output terminal to one end of an optical signal transmission cable; A first bidirectional wavelength multiplexing coupler for transmitting a third optical signal transmitted from one end of the optical signal transmission cable from the third input / output end to the second input / output end. The second optical signal processing unit has fourth, fifth, and sixth input / output terminals, and transfers a third optical signal from the fourth input / output terminal to the sixth input / output terminal. and vented and guides the other end of the optical signal transmission cable, the multiplexed optical signal transmitted to the other end of the optical signal transmission cable from the input and output terminals of the sixth to the fifth input terminal A second bidirectional wavelength division multiplexing coupler, and the fifth input section of the second bidirectional wavelength division multiplexing coupler. And a demultiplexing means for demultiplexing the multiplexed optical signal guided to the power end to obtain the first and second optical signals, wherein a first data reproducing unit is provided from the demultiplexing means. The first and second optical signals are formed to include first photoelectric conversion means for performing photoelectric conversion on each of the first and second optical signals.
Is formed including second photoelectric conversion means for performing photoelectric conversion on the third optical signal guided to the second input / output terminal of the first bidirectional wavelength division multiplexing coupler. 44. The data transmission device according to claim 43, wherein: 45. A first optical signal processing unit having first, second, and third input / output terminals, for transmitting a first optical signal from said first input / output terminal to said third input / output terminal. As well as to the end,
A first bidirectional wavelength division multiplexing coupler for passing a third optical signal from the third input / output end to the second input / output end; and a third bidirectional wavelength division multiplexing coupler of the first bidirectional wavelength division multiplexing coupler. multiplexes the first optical signal derived on input and output ends of the second optical signal to obtain a multiplexed optical signal, a multiplexing means for guiding multi optical signal to one end of the optical signal transmission cable Is formed including
A second optical signal processing unit for demultiplexing the multiplexed optical signal transmitted to the other end of the optical signal transmission cable to obtain the first and second optical signals; a fifth input and output terminals of the sixth, the first optical signal obtained from said dividing means with establishing communication to the fifth input terminal from the input and output terminals of the sixth, the second And a second bidirectional wavelength-division multiplexing coupler for passing the third optical signal from the fourth input / output terminal to the sixth input / output terminal. A first optical signal that performs photoelectric conversion on each of the first optical signal guided to the fifth input / output terminal of the bidirectional wavelength multiplexing coupler and the second optical signal obtained from the demultiplexing unit; Formed including photoelectric conversion means,
A second data reproducing unit, includes a second photoelectric conversion means for performing photoelectric conversion to the third optical signal derived in the second input-output terminal of the first bidirectional wavelength multiplexing coupler 44. The data transmission device according to claim 43, wherein the data transmission device is formed. 46. A fourth optical signal forming section for converting the fourth serial data into a fourth optical signal having a second center wavelength, wherein the first optical signal processing section comprises: Second and third
Has input and output terminals, and guides to the second through let in combining means and the optical signal to the third input-output terminal from said first output terminal, the fourth through the multiplexing means And a first optical circulator for transmitting the optical signal from the third input / output terminal to the second input / output terminal. The second optical signal processing unit includes A sixth input / output end, allowing the fourth optical signal to pass from the fourth input / output end to the sixth input / output end, and the other end of the optical signal transmission cable passing through a demultiplexer; guides, the second optical circulator of the second optical signal obtained from said dividing means providing communication to said fifth output terminal from the input and output terminals of the sixth is formed is added, the data reproducing unit 2 is, the fourth optical signal derived in the second input-output terminal of the first optical circulator Data transmission apparatus according to claim 45, wherein also characterized in that it is intended to apply the photoelectric conversion. 47. Digital video in which the frame rate is set to 24 Hz, 25 Hz or 30 Hz, the number of effective lines in each frame is set to 1080, the number of effective data samples in each line is set to 1920 samples, and the number of quantization bits is set to 10 bits. Signals, each one
The 30-bit parallel data formed by arranging the green primary color signal data sequence, the blue primary color signal data sequence and the red primary color signal data sequence as 0-bit word string data in parallel with the green primary color signal data sequence and the blue primary color signal data A 10-bit word forming the green primary color signal data sequence and a 10-bit word forming the blue primary color signal data sequence and the 10-bit word forming each of the blue primary color signal data sequence. A first word group including a part of a word; a 10-bit word forming an auxiliary data sequence; and another part of a 10-bit word forming each of the blue primary color signal data sequence and the red primary color signal data sequence. And a second word group including the first and second word groups. A data processing unit that performs processing for obtaining word string data to form first and second word string data; and obtains first and second serial data based on the first and second word string data, respectively. A parallel / serial conversion unit; a first optical signal forming unit that converts the first serial data into a first optical signal having a first center wavelength; A second optical signal forming unit that converts the optical signal into a second optical signal having a second center wavelength different from the wavelength; a multiplexed optical signal by multiplexing the first optical signal and the second optical signal; And a first optical signal processing unit for transmitting the multiplexed optical signal to the optical signal transmission cable and transmitting the multiplexed optical signal from one end to the other end of the optical signal transmission cable; A third center wavelength different from each of the first and second center wavelengths A third optical signal forming unit that converts the third optical signal into a third optical signal, and sends the third optical signal to the optical signal transmission cable, from the other end to the one end of the optical signal transmission cable. A second optical signal processing unit for transmitting; a first data reproducing unit for reproducing first and second serial data based on the multiplexed optical signal transmitted to the other end of the optical signal transmission cable; The third signal transmitted to one end of the optical signal transmission cable
Second reproducing the third serial data based on the optical signal of
And a data reproducing unit. 48. A first optical signal processing section, comprising: a multiplexing means for multiplexing the first and second optical signals to obtain a multiplexed optical signal;
A second input / output terminal for transmitting the multiplexed optical signal from the first input / output terminal to the third input / output terminal to one end of an optical signal transmission cable; A first bidirectional wavelength multiplexing coupler for transmitting a third optical signal transmitted from one end of the optical signal transmission cable from the third input / output end to the second input / output end. The second optical signal processing unit has fourth, fifth, and sixth input / output terminals, and transfers a third optical signal from the fourth input / output terminal to the sixth input / output terminal. and vented and guides the other end of the optical signal transmission cable, the multiplexed optical signal transmitted to the other end of the optical signal transmission cable from the input and output terminals of the sixth to the fifth input terminal A second bidirectional wavelength division multiplexing coupler, and the fifth input section of the second bidirectional wavelength division multiplexing coupler. And a demultiplexing means for demultiplexing the multiplexed optical signal guided to the power end to obtain the first and second optical signals, wherein a first data reproducing unit is provided from the demultiplexing means. The first and second optical signals are formed to include first photoelectric conversion means for performing photoelectric conversion on each of the first and second optical signals.
Is formed including second photoelectric conversion means for performing photoelectric conversion on the third optical signal led out to the second input / output terminal of the first bidirectional wavelength division multiplexing coupler. 48. The data transmission device according to claim 47, wherein: 49. A first optical signal processing unit having first, second, and third input / output terminals, for transmitting a first optical signal from said first input / output terminal to said third input / output terminal. As well as to the end,
A first bidirectional wavelength division multiplexing coupler for passing a third optical signal from the third input / output end to the second input / output end; and a third bidirectional wavelength division multiplexing coupler of the first bidirectional wavelength division multiplexing coupler. multiplexes the first optical signal derived on input and output ends of the second optical signal to obtain a multiplexed optical signal, a multiplexing means for guiding multi optical signal to one end of the optical signal transmission cable Is formed including
A second optical signal processing unit for demultiplexing the multiplexed optical signal transmitted to the other end of the optical signal transmission cable to obtain the first and second optical signals; a fifth input and output terminals of the sixth, the first optical signal obtained from said dividing means with establishing communication to the fifth input terminal from the input and output terminals of the sixth, the second And a second bidirectional wavelength-division multiplexing coupler for passing the third optical signal from the fourth input / output terminal to the sixth input / output terminal. A first optical signal that performs photoelectric conversion on each of the first optical signal guided to the fifth input / output terminal of the bidirectional wavelength multiplexing coupler and the second optical signal obtained from the demultiplexing unit; Formed including photoelectric conversion means,
The second data reproducing unit includes second photoelectric conversion means for performing photoelectric conversion on the third optical signal led out to the second input / output terminal of the first bidirectional wavelength multiplexing coupler. The data transmission device according to claim 47, wherein the data transmission device is formed. 50. A fourth optical signal forming unit for converting the fourth serial data into a fourth optical signal having a second center wavelength is provided, and the first optical signal processing unit comprises: Second and third
Has input and output terminals, and guides to the second through let in combining means and the optical signal to the third input-output terminal from said first output terminal, the fourth through the multiplexing means And a first optical circulator for transmitting the optical signal from the third input / output terminal to the second input / output terminal. The second optical signal processing unit includes A sixth input / output end, allowing the fourth optical signal to pass from the fourth input / output end to the sixth input / output end, and the other end of the optical signal transmission cable passing through a demultiplexer; guides, the second optical circulator of the second optical signal obtained from said dividing means providing communication to said fifth output terminal from the input and output terminals of the sixth is formed is added, the data reproducing unit 2 is, the fourth optical signal derived in the second input-output terminal of the first optical circulator Data transmission apparatus according to claim 49, wherein also characterized in that it is intended to apply the photoelectric conversion. 51. A digital video in which the frame rate is set to 24 Hz, 25 Hz or 30 Hz, the number of effective lines in each frame is set to 1080, the number of effective data samples in each line is set to 1920, and the number of quantization bits is 12 bits. Signals, each one
The green primary color signal data sequence and the blue primary color signal data are converted into 36-bit parallel data formed by arranging a green primary color signal data sequence, a blue primary color signal data sequence, and a red primary color signal data sequence as 2-bit word string data in parallel. Each of the 12-bit words constituting each of the series and the red primary color signal data sequence is divided into upper 10 bits and lower 2 bits, and a plurality of upper 10 bits divided from the green primary color signal data sequence and the blue primary color signal are divided. Word string data based on a part of a plurality of upper 10 bits divided from each of the data sequence and the red primary color signal data sequence;
Another part of a plurality of upper 10 bits divided from each of the blue primary color signal data sequence and the red primary color signal data sequence, and divided from the green primary color signal data sequence, the blue primary color signal data sequence, and the red primary color signal data sequence subjected to a treatment to obtain a word sequence data based on a plurality of low-order 2 bits and dummy bits, and a data processing unit for forming a first and second word sequence data, the first and second word sequence A parallel / serial converter for obtaining first and second serial data based on respective data; a first optical signal forming unit for converting the first serial data into a first optical signal having a first center wavelength When a second optical signal generator for converting the second serial data to the second optical signal having a second center wavelength different from the first center wavelength, the first optical signal and the upper A first optical signal is multiplexed with the second optical signal to obtain a multiplexed optical signal, and the multiplexed optical signal is transmitted to an optical signal transmission cable and transmitted from one end to the other end of the optical signal transmission cable. An optical signal processing unit, and a third optical signal forming unit that converts the third serial data into a third optical signal having a third central wavelength different from each of the first and second central wavelengths. A second optical signal processing unit for transmitting the third optical signal to the optical signal transmission cable and transmitting the third optical signal from the other end to the one end of the optical signal transmission cable; first and first data reproducing unit, the third transmitted to one end of the optical signal transmission cable reproducing the second serial data based on the multiplexed optical signal transmitted to the terminal side
Second reproducing the third serial data based on the optical signal of
And a data reproducing unit. 52. A first optical signal processing section, comprising: a multiplexing means for multiplexing the first and second optical signals to obtain a multiplexed optical signal;
A second input / output terminal for transmitting the multiplexed optical signal from the first input / output terminal to the third input / output terminal to one end of an optical signal transmission cable; A first bidirectional wavelength multiplexing coupler for transmitting a third optical signal transmitted from one end of the optical signal transmission cable from the third input / output end to the second input / output end. The second optical signal processing unit has fourth, fifth, and sixth input / output terminals, and transfers a third optical signal from the fourth input / output terminal to the sixth input / output terminal. and vented and guides the other end of the optical signal transmission cable, the multiplexed optical signal transmitted to the other end of the optical signal transmission cable from the input and output terminals of the sixth to the fifth input terminal A second bidirectional wavelength division multiplexing coupler, and the fifth input section of the second bidirectional wavelength division multiplexing coupler. And a demultiplexing means for demultiplexing the multiplexed optical signal guided to the power end to obtain the first and second optical signals, wherein a first data reproducing unit is provided from the demultiplexing means. The first and second optical signals are formed to include first photoelectric conversion means for performing photoelectric conversion on each of the first and second optical signals.
Is formed including second photoelectric conversion means for performing photoelectric conversion on the third optical signal guided to the second input / output terminal of the first bidirectional wavelength division multiplexing coupler. data transmission apparatus according to claim 51, wherein Rukoto. 53. A first optical signal processing section having first, second, and third input / output terminals, for transmitting a first optical signal from said first input / output terminal to said third input / output terminal. To the end,
A first bidirectional wavelength division multiplexing coupler for passing a third optical signal from the third input / output end to the second input / output end; and a third bidirectional wavelength division multiplexing coupler of the first bidirectional wavelength division multiplexing coupler. multiplexes the first optical signal derived on input and output ends of the second optical signal to obtain a multiplexed optical signal, a multiplexing means for guiding multi optical signal to one end of the optical signal transmission cable Is formed including
A second optical signal processing unit for demultiplexing the multiplexed optical signal transmitted to the other end of the optical signal transmission cable to obtain the first and second optical signals; a fifth input and output terminals of the sixth, the first optical signal obtained from said dividing means with establishing communication to the fifth input terminal from the input and output terminals of the sixth, the second And a second bidirectional wavelength-division multiplexing coupler for passing the third optical signal from the fourth input / output terminal to the sixth input / output terminal. A first optical signal that performs photoelectric conversion on each of the first optical signal guided to the fifth input / output terminal of the bidirectional wavelength multiplexing coupler and the second optical signal obtained from the demultiplexing unit; Formed including photoelectric conversion means,
The second data reproducing unit includes second photoelectric conversion means for performing photoelectric conversion on the third optical signal led out to the second input / output terminal of the first bidirectional wavelength multiplexing coupler. data transmission apparatus according to claim 51, wherein the formed. 54. The optical signal generating section of the fourth is provided for converting the fourth serial data to the fourth optical signal having a second center wavelength, the first optical signal processing unit, first, Second and third
Has input and output terminals, and guides to the second through let in combining means and the optical signal to the third input-output terminal from said first output terminal, the fourth through the multiplexing means And a first optical circulator for transmitting the optical signal from the third input / output terminal to the second input / output terminal. The second optical signal processing unit includes A sixth input / output end, allowing the fourth optical signal to pass from the fourth input / output end to the sixth input / output end, and the other end of the optical signal transmission cable passing through a demultiplexer; guides, the second optical circulator of the second optical signal obtained from said dividing means providing communication to said fifth output terminal from the input and output terminals of the sixth is formed is added, the data reproducing unit 2 is, the fourth optical signal derived in the second input-output terminal of the first optical circulator Data transmission apparatus according to claim 53, wherein also characterized in that it is intended to apply the photoelectric conversion. 55. The frame rate 50Hz or 60
Hz, and the number of effective lines in each frame is 1080
Line, the number of valid data samples in each line is 19
A luminance signal data sequence and a chrominance difference which are set to 20 samples and form a digital video signal having a quantization bit number of 12, 14, or 16 bits, each of which is a 12-bit, 14-bit, or 16-bit word string data The 24-bit, 28-bit or 32-bit parallel data formed in parallel arrangement with the signal data series is subjected to a process of sequentially allocating each line portion to a first group and a second group, and the first group is processed. First word string data based on data forming a group;
The second word string data based on the data forming the second group is formed, and each of the 12-bit, 14-bit, or 16-bit data constituting the luminance signal data series and the chrominance signal data series in the first word string data is formed. A bit word is divided into upper 10 bits and lower 2 bits, 4 bits or 6 bits, and a third word string data based on the divided upper 10 bits and the lower 2 bits, 4 The fourth word string data is formed based on the bits or 6 bits and the auxiliary bits, and the 12-bit, 14-bit or 16-bit data constituting the luminance signal data sequence and the chrominance signal data sequence in the second word sequence data. Change the bit word to the top 10
Bits and the lower 2 bits, performs a process of dividing into a 4-bit or 6-bit, the fifth word sequence data based on the divided upper 10 bits, divided lower 2 bits, 4 bits or 6 bits auxiliary A data processing unit that forms sixth word string data based on the bits, and first, second, third, and fourth data based on the third, fourth, fifth, and sixth word string data, respectively. said a Barareru / serial converter to obtain serial data, a first optical signal forming section for converting the first serial data to the first optical signal having a first center wavelength, the second serial data A second optical signal forming unit that converts the optical signal into a second optical signal having a second central wavelength different from the first central wavelength; and multiplexes the first optical signal and the second optical signal. First
Give the multiplexed optical signal, and transmits the multiplexed optical signals of the first to the first optical signal transmission cable, a first light transmitting to the other end from one end of the first optical signal transmission cable a signal processing unit, and the third and the third optical signal forming section for converting the serial data to the third optical signal having a third center wavelength of said fourth the serial data of the third center wavelength the fourth and the fourth optical signal forming section for converting the optical signal, the second and multiplexes the above third optical signal and the fourth optical signal having a different fourth the central wavelength of
A second optical signal transmitted from one end to the other end of the second optical signal transmission cable A signal processing unit; a fifth optical signal forming unit configured to convert the fifth serial data into a fifth optical signal having a fifth center wavelength different from each of the first and second center wavelengths; a fifth optical signal and transmitted to the first optical signal transmission cable, from the other end of the first optical signal transmission cable and the third optical signal processing unit that transmits to the one end side, of the sixth A sixth optical signal forming unit for converting serial data into a sixth optical signal having a sixth central wavelength different from each of the third and fourth central wavelengths, and converting the sixth optical signal to the sixth optical signal. by sending a second optical signal transmission cable, the transmission to the one end from the other end of the second optical signal transmission cable 4, an optical signal processing unit, and a first data reproducing unit that reproduces first and second serial data based on the first multiplexed optical signal transmitted to the other end of the first optical signal transmission cable. A second data reproducing unit that reproduces fifth serial data based on the fifth optical signal transmitted to one end of the first optical signal transmission cable; A third data reproducing unit that reproduces third and fourth serial data based on the second multiplexed optical signal transmitted to the other end, and transmitted to one end of the second optical signal transmission cable. the sixth configured data transmission device comprises a fourth data reproduction unit for reproducing the sixth serial data based on the light signal, the. 56. A first multiplexing means for multiplexing the first and second optical signals to obtain a first multiplexed optical signal, the first optical signal processing section comprising: a first multiplexing means for multiplexing the first and second optical signals; has three input and output terminals, said first
Multiplexed optical signal from the first input / output terminal to the third input / output terminal to be guided to one end of the first optical signal transmission cable, and to one end of the first optical signal transmission cable And a first bidirectional wavelength-division multiplexing coupler for transmitting the fifth optical signal transmitted from the third input / output terminal to the second input / output terminal. A processing unit having fourth, fifth, and sixth input / output terminals, for transmitting a fifth optical signal from the fourth input / output terminal to the sixth input / output terminal, The first multiplexed optical signal transmitted to the other end of the first optical signal transmission cable is guided from the sixth input / output terminal to the fifth input / output terminal while being guided to the other end of the optical signal transmission cable. A second bidirectional WDM coupler leading to the end; and the fifth input / output of the second bidirectional WDM coupler. The first multiplexed optical signal derived on the end demultiplexed formed to include a first demultiplexing means for obtaining said first and second optical signal, the second optical signal processing unit, A second multiplexing means for multiplexing the third and fourth optical signals to obtain a second multiplexed optical signal; and seventh, eighth, and ninth input / output terminals, an optical signal and guides the one end of the second optical signal transmission cable vented to the ninth input terminal from the input and output terminals of the seventh, transmitted to one end of said second optical signal transmission cable sixth optical signal is formed and a third bidirectional wavelength multiplexing coupler that makes communication with the input and output terminals of the eighth from the output end of the ninth, fourth optical signal processing section above but tenth, eleventh and twelfth has input and output ends of the optical signal of the 6 vented to input and output terminals of the first 12 from the input and output end of the first 10 The second optical signal transmission cable is guided to the other end, and the second multiplexed optical signal transmitted to the other end of the second optical signal transmission cable is transmitted from the twelfth input / output terminal to the eleventh input. A fourth bidirectional wavelength-division multiplexing coupler communicating with the input / output end of the
And a second demultiplexing means for demultiplexing the second multiplexed optical signal led out to the eleventh input / output end of the bidirectional wavelength multiplexing coupler to obtain the third and fourth optical signals. And a first data reproducing unit is formed including first photoelectric conversion means for performing photoelectric conversion on each of the first and second optical signals obtained from the first demultiplexing means. , A second data reproducing unit includes second photoelectric conversion means for performing photoelectric conversion on the fifth optical signal led out to the second input / output terminal of the first bidirectional wavelength multiplexing coupler. And a third data reproducing unit is formed including third photoelectric conversion means for performing photoelectric conversion on each of the third and fourth optical signals obtained from the second demultiplexing means, The fourth data reproducing unit is
The third bidirectional wavelength multiplexing coupler is formed to include fourth photoelectric conversion means for performing photoelectric conversion on the sixth optical signal led out to the eighth input / output terminal of the third bidirectional wavelength multiplexing coupler. The data transmission device according to claim 55. 57. A first optical signal processing section having first, second, and third input / output terminals, and outputs a first optical signal from said first input / output terminal to said third input / output terminal. As well as to the end,
A first bidirectional wavelength division multiplexing coupler for passing a fifth optical signal from the third input / output end to the second input / output end; and a third bidirectional wavelength division multiplexing coupler of the first bidirectional wavelength division multiplexing coupler. multiplexes the input and output the first optical signal is derived in the end and the second optical signal to obtain a first multiplexed optical signal, a multiplexed optical signal of the first first optical signal transmission cable the formation and a first multiplexing means for guiding the one end side, a third optical signal processing unit, the first optical signal transmission cable the other end transmitted the first multiplexed optical signal to the Having first, second, fourth and fifth input / output terminals for obtaining the first and second optical signals by demultiplexing the first and second optical signals, and obtained from the first demultiplexer. The first optical signal is transmitted from the sixth input / output terminal to the fifth input / output terminal, and the fifth optical signal is transmitted from the fourth input / output terminal to the sixth input / output terminal. Is formed and a second bidirectional wavelength multiplexing coupler that makes communication with the input and output ends, the second optical signal processing section has a seventh input and output terminals of the eighth and ninth,
A third optical signal is transmitted from the seventh input / output terminal to the ninth input / output terminal, and a sixth optical signal is transmitted to the ninth input / output terminal.
A third connection from the input / output terminal of the second terminal to the eighth input / output terminal.
A bidirectional wavelength multiplexing coupler, the first and the said third optical signal and the fourth optical signal derived in the ninth input and output terminals of the bidirectional wavelength multiplexing coupler of the third multiplexer give 2-multiplexed optical signal is formed and a second multiplexing means for guiding multiplexed optical signal of the second one end of the second optical signal transmission cable,
A fourth optical signal processing unit for demultiplexing the second multiplexed optical signal transmitted to the other end of the second optical signal transmission cable to obtain the third and fourth optical signals; , And tenth, eleventh, and twelfth input / output terminals. The third optical signal obtained from the second demultiplexer is supplied to the eleventh input / output terminal from the twelfth input / output terminal. And a fourth bidirectional wavelength-division multiplexing coupler for transmitting the sixth optical signal from the tenth input / output terminal to the twelfth input / output terminal. is, the first data reproducing unit is obtained from the second of said first optical signal and said first demultiplexing means derived in the fifth input and output terminals of the bidirectional wavelength multiplexing coupler The second optical signal is formed to include first photoelectric conversion means for performing photoelectric conversion on each of the second optical signals, and the second data reproducing unit includes: Is formed to include a second photoelectric conversion means for performing photoelectric conversion to the fifth optical signal derived in the second input and output terminals of the serial first bidirectional wavelength multiplexing coupler,
A third data reproducing unit configured to output the third optical signal guided to the eleventh input / output terminal of the fourth bidirectional wavelength multiplexing coupler and the fourth optical signal obtained from the second demultiplexing unit; A third photoelectric conversion means for performing photoelectric conversion on each of the optical signals, and a fourth data reproducing unit is connected to the eighth input / output terminal of the third bidirectional wavelength division multiplexing coupler. is the the sixth data transmission apparatus according to claim 55, wherein the formed include fourth photoelectric conversion means for performing photoelectric conversion on the optical signal. And 58. seventh optical signal forming section for converting the seventh serial data to the seventh optical signal having a second center wavelength, the serial data of the first 8 and a fourth center wavelength of An eighth optical signal forming unit for converting the optical signal into an eighth optical signal; the first optical signal processing unit having first, second, and third input / output terminals; From the first input / output terminal to the third input / output terminal to be guided to the first multiplexing means, and the seventh optical signal passed through the first multiplexing means is transmitted to the third multiplexing means. first optical circulator establishing communication from the output end to the second input-output terminal is formed is added,
A third optical signal processing unit having fourth, fifth, and sixth input / output terminals, for passing the seventh optical signal from the fourth input / output terminal to the sixth input / output terminal; And guiding the second optical signal to the other end of the first optical signal transmission cable through the first demultiplexing means, and transmitting the second optical signal obtained from the first demultiplexing means from the sixth input / output end. A second optical circulator communicating with the fifth input / output terminal is additionally formed. The second optical signal processing unit has seventh, eighth, and ninth input / output terminals. Is transmitted from the seventh input / output terminal to the ninth input / output terminal and guided to the second multiplexing means, and the eighth optical signal passed through the second multiplexing means is transmitted to the second multiplexing means. third optical circulator that makes communication with the input and output terminals of the ninth to input and output terminals of the eighth is formed is added, a fourth optical signal processing unit, the first , An eleventh and a twelfth input / output terminal, and allows the eighth optical signal to pass from the tenth input / output terminal to the twelfth input / output terminal. The second optical signal transmission cable is guided to the other end, and the fourth optical signal obtained from the second demultiplexer is passed from the twelfth input / output terminal to the eleventh input / output terminal. A fourth optical circulator is added to the first optical circulator, and the second data reproducing unit also performs photoelectric conversion on the seventh optical signal guided to the second input / output terminal of the first optical circulator. Wherein the fourth data reproducing unit also performs photoelectric conversion on the eighth optical signal led out to the eighth input / output terminal of the third optical circulator. data transmission apparatus according to claim 57, wherein the. 59. A frame rate of 50 Hz or 60 Hz.
Hz, and the number of effective lines in each frame is 1080
Line, the number of valid data samples in each line is 19
A green primary color signal data sequence, a blue primary color signal data sequence, and a red primary color signal data sequence, each of which is set to 20 samples and forms a 10-bit word string data, forming a digital video signal having a quantization bit number of 10 bits. Of the 30-bit parallel data formed with the parallel arrangement of the first group and the second group for each line portion, and a first group based on the data forming the first group. Forming word sequence data and second word sequence data based on the data forming the second group, and forming a green primary color signal data sequence, a blue primary color signal data sequence, and a red primary color signal sequence in the first word sequence data; Each 10-bit word forming each of the data sequences is referred to as the 10-bit word forming the green primary color signal data sequence and the blue primary color signal data sequence. A first word group including a part of a 10-bit word forming each of a signal data sequence and a red primary color signal data sequence; a 10-bit word forming an auxiliary data sequence; and the blue primary color signal data sequence and the red primary color signal The data sequence is divided into a second word group including the other part of the 10-bit word constituting each of the data sequences, and a process of obtaining word string data based on each of the first and second word groups is performed. While forming the third and fourth word string data, each 10-bit word constituting each of the green primary color signal data series, the blue primary color signal data series and the red primary color signal data series in the second word string data is The 10-bit word forming the green primary color signal data sequence and the other of the blue primary color signal data sequence and the red primary color signal data sequence A third word group including a portion of the 10-bit words constituting the auxiliary data series of 10-bit words and the blue primary color signal data series and the red primary color signal data series to form each 10-bit word which constitutes allocated to a fourth word group including a portion of the other is subjected to a process of obtaining the word array data based on the people each of said third and fourth word groups, form a word sequence data of the fifth and sixth a data processing unit that, and the third, fourth, first, second, parallel / serial converter to obtain a third and fourth serial data based respectively on the fifth and sixth word sequence data, said first a first optical signal forming section for converting the first serial data to the first optical signal having a first center wavelength, a second central wave different from the second of said serial data first center wavelength A second optical signal forming unit that converts the first optical signal into a second optical signal having a length,
Give the multiplexed optical signal, and transmits the multiplexed optical signals of the first to the first optical signal transmission cable, a first light transmitting to the other end from one end of the first optical signal transmission cable a signal processing unit, and the third and the third optical signal forming section for converting the serial data to the third optical signal having a third center wavelength of said fourth the serial data of the third center wavelength the fourth and the fourth optical signal forming section for converting the optical signal, the second and multiplexes the above third optical signal and the fourth optical signal having a different fourth the central wavelength of
A second optical signal transmitted from one end to the other end of the second optical signal transmission cable A signal processing unit; a fifth optical signal forming unit configured to convert the fifth serial data into a fifth optical signal having a fifth center wavelength different from each of the first and second center wavelengths; a fifth optical signal and transmitted to the first optical signal transmission cable, from the other end of the first optical signal transmission cable and the third optical signal processing unit that transmits to the one end side, of the sixth A sixth optical signal forming unit for converting serial data into a sixth optical signal having a sixth central wavelength different from each of the third and fourth central wavelengths, and converting the sixth optical signal to the sixth optical signal. by sending a second optical signal transmission cable, the transmission to the one end from the other end of the second optical signal transmission cable 4, an optical signal processing unit, and a first data reproducing unit that reproduces first and second serial data based on the first multiplexed optical signal transmitted to the other end of the first optical signal transmission cable. A second data reproducing unit that reproduces fifth serial data based on the fifth optical signal transmitted to one end of the first optical signal transmission cable; A third data reproducing unit that reproduces third and fourth serial data based on the second multiplexed optical signal transmitted to the other end, and transmitted to one end of the second optical signal transmission cable. the sixth configured data transmission device comprises a fourth data reproduction unit for reproducing the sixth serial data based on the light signal, the. 60. A first optical signal processing unit, comprising: first multiplexing means for multiplexing first and second optical signals to obtain a first multiplexed optical signal; 3 input / output terminals, and the first
Multiplexed optical signal from the first input / output terminal to the third input / output terminal to be guided to one end of the first optical signal transmission cable, and to one end of the first optical signal transmission cable And a first bidirectional wavelength-division multiplexing coupler for transmitting the fifth optical signal transmitted from the third input / output terminal to the second input / output terminal. A processing unit having fourth, fifth, and sixth input / output terminals, for transmitting a fifth optical signal from the fourth input / output terminal to the sixth input / output terminal, The first multiplexed optical signal transmitted to the other end of the first optical signal transmission cable is guided from the sixth input / output terminal to the fifth input / output terminal while being guided to the other end of the optical signal transmission cable. A second bidirectional WDM coupler leading to the end; and the fifth input / output of the second bidirectional WDM coupler. The first multiplexed optical signal derived on the end demultiplexed formed to include a first demultiplexing means for obtaining said first and second optical signal, the second optical signal processing unit, A second multiplexing means for multiplexing the third and fourth optical signals to obtain a second multiplexed optical signal; and seventh, eighth, and ninth input / output terminals, an optical signal and guides the one end of the second optical signal transmission cable vented to the ninth input terminal from the input and output terminals of the seventh, transmitted to one end of said second optical signal transmission cable sixth optical signal is formed and a third bidirectional wavelength multiplexing coupler that makes communication with the input and output terminals of the eighth from the output end of the ninth, fourth optical signal processing section above but tenth, eleventh and twelfth has input and output ends of the optical signal of the 6 vented to input and output terminals of the first 12 from the input and output end of the first 10 The second optical signal transmission cable is guided to the other end, and the second multiplexed optical signal transmitted to the other end of the second optical signal transmission cable is transmitted from the twelfth input / output terminal to the eleventh input. A fourth bidirectional wavelength-division multiplexing coupler communicating with the input / output end of the
And a second demultiplexing means for demultiplexing the second multiplexed optical signal led out to the eleventh input / output end of the bidirectional wavelength multiplexing coupler to obtain the third and fourth optical signals. And a first data reproducing unit is formed including first photoelectric conversion means for performing photoelectric conversion on each of the first and second optical signals obtained from the first demultiplexing means. , A second data reproducing unit includes second photoelectric conversion means for performing photoelectric conversion on the fifth optical signal led out to the second input / output terminal of the first bidirectional wavelength multiplexing coupler. And a third data reproducing unit is formed including third photoelectric conversion means for performing photoelectric conversion on each of the third and fourth optical signals obtained from the second demultiplexing means, The fourth data reproducing unit is
The third bidirectional wavelength multiplexing coupler is formed to include fourth photoelectric conversion means for performing photoelectric conversion on the sixth optical signal led out to the eighth input / output terminal of the third bidirectional wavelength multiplexing coupler. The data transmission device according to claim 59. 61. A first optical signal processing unit having first, second, and third input / output terminals, for transmitting a first optical signal from said first input / output terminal to said third input / output terminal. As well as to the end,
A first bidirectional wavelength division multiplexing coupler for passing a fifth optical signal from the third input / output end to the second input / output end; and a third bidirectional wavelength division multiplexing coupler of the first bidirectional wavelength division multiplexing coupler. multiplexes the input and output the first optical signal is derived in the end and the second optical signal to obtain a first multiplexed optical signal, a multiplexed optical signal of the first first optical signal transmission cable the formation and a first multiplexing means for guiding the one end side, a third optical signal processing unit, the first optical signal transmission cable the other end transmitted the first multiplexed optical signal to the Having first, second, fourth and fifth input / output terminals for obtaining the first and second optical signals by demultiplexing the first and second optical signals, and obtained from the first demultiplexer. The first optical signal is transmitted from the sixth input / output terminal to the fifth input / output terminal, and the fifth optical signal is transmitted from the fourth input / output terminal to the sixth input / output terminal. Is formed and a second bidirectional wavelength multiplexing coupler that makes communication with the input and output ends, the second optical signal processing section has a seventh input and output terminals of the eighth and ninth,
A third optical signal is transmitted from the seventh input / output terminal to the ninth input / output terminal, and a sixth optical signal is transmitted to the ninth input / output terminal.
A third connection from the input / output terminal of the second terminal to the eighth input / output terminal.
A bidirectional wavelength multiplexing coupler, the first and the said third optical signal and the fourth optical signal derived in the ninth input and output terminals of the bidirectional wavelength multiplexing coupler of the third multiplexer give 2-multiplexed optical signal is formed and a second multiplexing means for guiding multiplexed optical signal of the second one end of the second optical signal transmission cable,
A fourth optical signal processing unit for demultiplexing the second multiplexed optical signal transmitted to the other end of the second optical signal transmission cable to obtain the third and fourth optical signals; , And tenth, eleventh, and twelfth input / output terminals. The third optical signal obtained from the second demultiplexer is supplied to the eleventh input / output terminal from the twelfth input / output terminal. And a fourth bidirectional wavelength-division multiplexing coupler for transmitting the sixth optical signal from the tenth input / output terminal to the twelfth input / output terminal. is, the first data reproducing unit is obtained from the second of said first optical signal and said first demultiplexing means derived in the fifth input and output terminals of the bidirectional wavelength multiplexing coupler The second optical signal is formed to include first photoelectric conversion means for performing photoelectric conversion on each of the second optical signals, and the second data reproducing unit includes: Is formed to include a second photoelectric conversion means for performing photoelectric conversion to the fifth optical signal derived in the second input and output terminals of the serial first bidirectional wavelength multiplexing coupler,
A third data reproducing unit configured to output the third optical signal guided to the eleventh input / output terminal of the fourth bidirectional wavelength multiplexing coupler and the fourth optical signal obtained from the second demultiplexing unit; the formed including a third photoelectric conversion means for performing photoelectric conversion to each of the optical signal, the data reproducing portion of the fourth is derived to the eighth output terminal of the third bidirectional wavelength multiplexing coupler The data transmission device according to claim 59, further comprising a fourth photoelectric conversion unit that performs photoelectric conversion on the sixth optical signal. 62. A seventh optical signal forming section for converting the seventh serial data into a seventh optical signal having a second center wavelength, and the eighth serial data having a fourth center wavelength. an optical signal forming part of the eighth is provided to convert the optical signal of the eighth, the first optical signal processing section has a first, second and third input and output ends, the second optical signal the guides in the first multiplexing unit in vented to the third output terminal from said first output terminal, the seventh the third optical signals through the multiplexing unit first A first optical circulator that connects from the input / output end of the first to the second input / output end is formed,
A third optical signal processing unit having fourth, fifth, and sixth input / output terminals, for passing the seventh optical signal from the fourth input / output terminal to the sixth input / output terminal; And guiding the second optical signal to the other end of the first optical signal transmission cable through the first demultiplexing means, and transmitting the second optical signal obtained from the first demultiplexing means from the sixth input / output end. A second optical circulator communicating with the fifth input / output terminal is additionally formed. The second optical signal processing unit has seventh, eighth, and ninth input / output terminals. Is transmitted from the seventh input / output terminal to the ninth input / output terminal and guided to the second multiplexing means, and the eighth optical signal passed through the second multiplexing means is transmitted to the second multiplexing means. third optical circulator that makes communication with the input and output terminals of the ninth to input and output terminals of the eighth is formed is added, a fourth optical signal processing unit, the first , An eleventh and a twelfth input / output terminal, allowing the eighth optical signal to pass from the tenth input / output terminal to the twelfth input / output terminal, and passing through the second demultiplexer. and it guides the other end of the second optical signal transmission cable, and the fourth optical signal obtained from the second demultiplexing means from the input and output terminals of the twelfth to the output end of the first 11 fourth optical circulator establishing communication is formed is added, the second data reproducing unit, also the photoelectric conversion to the seventh optical signal derived in the second input-output terminal of the first optical circulator is assumed to the applied, that the fourth data reproduction unit is intended to perform an even photoelectric converter to said eighth optical signal derived in the eighth output terminal of the third optical circulator 63. The data transmission device according to claim 61, wherein: 63. The frame rate 50Hz or 60
Hz, and the number of effective lines in each frame is 1080
Line, the number of valid data samples in each line is 19
A green primary color signal data sequence, a blue primary color signal data sequence, and a red primary color signal data sequence each of which is set to 20 samples and has a quantization bit number of 12 bits, and forms a 12-bit word string data. Of the 36-bit parallel data formed with the parallel arrangement of the first group and the second group for each line portion, and a first group based on the data forming the first group. Forming word sequence data and second word sequence data based on the data forming the second group, and forming a green primary color signal data sequence, a blue primary color signal data sequence, and a red primary color signal sequence in the first word sequence data; Each 12-bit word constituting each of the data series is divided into upper 10 bits and lower 2 bits, and A plurality of upper divided from the series 10
Word string data based on bits and a part of a plurality of upper 10 bits divided from each of the blue primary color signal data sequence and the red primary color signal data sequence, and the blue primary color signal data sequence and the red primary color signal data sequence, respectively. A word based on another part of the plurality of upper 10 bits divided from the above, and the plurality of lower 2 bits and auxiliary bits divided from the green primary color signal data sequence, blue primary color signal data sequence and red primary color signal data sequence. A process of obtaining column data is performed to form third and fourth word sequence data, and a green primary color signal data sequence, a blue primary color signal data sequence, and a red primary color signal data sequence in the second word sequence data are processed. Each of the 12-bit words constituting each is divided into upper 10 bits and lower 2 bits, and is divided from the green primary color signal data sequence. Word string data based on the divided plurality of upper 10 bits and a part of the plurality of upper 10 bits divided from each of the blue primary color signal data sequence and the red primary color signal data sequence; Another part of a plurality of upper 10 bits divided from each of the red primary color signal data series, and a plurality of lower 2 bits divided from the green primary color signal data series, the blue primary color signal data series and the red primary color signal data series And processing for obtaining word string data based on the
And a data processing unit forming sixth and sixth word string data, and obtaining first, second, third and fourth serial data based on the third, fourth, fifth and sixth word string data, respectively. A parallel / serial conversion unit; a first optical signal forming unit that converts the first serial data into a first optical signal having a first center wavelength; and a second optical unit that converts the second serial data into the first center data. the by a second optical signal forming section for converting the second optical signal having a different second center wavelength and wavelength, and the first optical signal and the second optical signal multiplexed 1
Give the multiplexed optical signal, and transmits the multiplexed optical signals of the first to the first optical signal transmission cable, a first light transmitting to the other end from one end of the first optical signal transmission cable a signal processing unit, and the third and the third optical signal forming section for converting the serial data to the third optical signal having a third center wavelength of said fourth the serial data of the third center wavelength the fourth and the fourth optical signal forming section for converting the optical signal, the second and multiplexes the above third optical signal and the fourth optical signal having a different fourth the central wavelength of
A second optical signal transmitted from one end to the other end of the second optical signal transmission cable A signal processing unit; a fifth optical signal forming unit configured to convert the fifth serial data into a fifth optical signal having a fifth center wavelength different from each of the first and second center wavelengths; a fifth optical signal and transmitted to the first optical signal transmission cable, from the other end of the first optical signal transmission cable and the third optical signal processing unit that transmits to the one end side, of the sixth A sixth optical signal forming unit for converting serial data into a sixth optical signal having a sixth central wavelength different from each of the third and fourth central wavelengths, and converting the sixth optical signal to the sixth optical signal. by sending a second optical signal transmission cable, the transmission to the one end from the other end of the second optical signal transmission cable 6, an optical signal processing unit, and a first data reproducing unit that reproduces first and second serial data based on the first multiplexed optical signal transmitted to the other end of the first optical signal transmission cable. A second data reproducing unit that reproduces fifth serial data based on the fifth optical signal transmitted to one end of the first optical signal transmission cable; A third data reproducing unit that reproduces third and fourth serial data based on the second multiplexed optical signal transmitted to the other end, and transmitted to one end of the second optical signal transmission cable. A data transmission device comprising: a fourth data reproducing unit that reproduces sixth serial data based on the sixth optical signal. 64. A first optical signal processing unit, comprising: first multiplexing means for multiplexing first and second optical signals to obtain a first multiplexed optical signal; 3 input / output terminals, and the first
Multiplexed optical signal from the first input / output terminal to the third input / output terminal to be guided to one end of the first optical signal transmission cable, and to one end of the first optical signal transmission cable And a first bidirectional wavelength-division multiplexing coupler for transmitting the fifth optical signal transmitted from the third input / output terminal to the second input / output terminal. A processing unit having fourth, fifth, and sixth input / output terminals, for transmitting a fifth optical signal from the fourth input / output terminal to the sixth input / output terminal, The first multiplexed optical signal transmitted to the other end of the first optical signal transmission cable is guided from the sixth input / output terminal to the fifth input / output terminal while being guided to the other end of the optical signal transmission cable. A second bidirectional WDM coupler leading to the end; and the fifth input / output of the second bidirectional WDM coupler. The first multiplexed optical signal derived on the end demultiplexed formed to include a first demultiplexing means for obtaining said first and second optical signal, the second optical signal processing unit, A second multiplexing means for multiplexing the third and fourth optical signals to obtain a second multiplexed optical signal; and seventh, eighth, and ninth input / output terminals, an optical signal and guides the one end of the second optical signal transmission cable vented to the ninth input terminal from the input and output terminals of the seventh, transmitted to one end of said second optical signal transmission cable sixth optical signal is formed and a third bidirectional wavelength multiplexing coupler that makes communication with the input and output terminals of the eighth from the output end of the ninth, fourth optical signal processing section above but tenth, eleventh and twelfth has input and output ends of the optical signal of the 6 vented to input and output terminals of the first 12 from the input and output end of the first 10 The second optical signal transmission cable is guided to the other end, and the second multiplexed optical signal transmitted to the other end of the second optical signal transmission cable is transmitted from the twelfth input / output terminal to the eleventh input. A fourth bidirectional wavelength-division multiplexing coupler communicating with the input / output end of the
And a second demultiplexing means for demultiplexing the second multiplexed optical signal led out to the eleventh input / output end of the bidirectional wavelength multiplexing coupler to obtain the third and fourth optical signals. And a first data reproducing unit is formed including first photoelectric conversion means for performing photoelectric conversion on each of the first and second optical signals obtained from the first demultiplexing means. , A second data reproducing unit includes second photoelectric conversion means for performing photoelectric conversion on the fifth optical signal led out to the second input / output terminal of the first bidirectional wavelength multiplexing coupler. And a third data reproducing unit is formed including third photoelectric conversion means for performing photoelectric conversion on each of the third and fourth optical signals obtained from the second demultiplexing means, The fourth data reproducing unit is
The third bidirectional wavelength division multiplexing coupler is formed to include fourth photoelectric conversion means for performing photoelectric conversion on the sixth optical signal led out to the eighth input / output terminal. 64. The data transmission device according to claim 63. 65. A first optical signal processing section having first, second, and third input / output terminals, for transmitting a first optical signal from said first input / output terminal to said third input / output terminal. As well as to the end,
A first bidirectional wavelength division multiplexing coupler for passing a fifth optical signal from the third input / output end to the second input / output end; and a third bidirectional wavelength division multiplexing coupler of the first bidirectional wavelength division multiplexing coupler. multiplexes the input and output the first optical signal is derived in the end and the second optical signal to obtain a first multiplexed optical signal, a multiplexed optical signal of the first first optical signal transmission cable the formation and a first multiplexing means for guiding the one end side, a third optical signal processing unit, the first optical signal transmission cable the other end transmitted the first multiplexed optical signal to the Having first, second, fourth and fifth input / output terminals for obtaining the first and second optical signals by demultiplexing the first and second optical signals, and obtained from the first demultiplexer. The first optical signal is transmitted from the sixth input / output terminal to the fifth input / output terminal, and the fifth optical signal is transmitted from the fourth input / output terminal to the sixth input / output terminal. Is formed and a second bidirectional wavelength multiplexing coupler that makes communication with the input and output ends, the second optical signal processing section has a seventh input and output terminals of the eighth and ninth,
A third optical signal is transmitted from the seventh input / output terminal to the ninth input / output terminal, and a sixth optical signal is transmitted to the ninth input / output terminal.
A third connection from the input / output terminal of the second terminal to the eighth input / output terminal.
A bidirectional wavelength multiplexing coupler, the first and the said third optical signal and the fourth optical signal derived in the ninth input and output terminals of the bidirectional wavelength multiplexing coupler of the third multiplexer give 2-multiplexed optical signal is formed and a second multiplexing means for guiding multiplexed optical signal of the second one end of the second optical signal transmission cable,
A fourth optical signal processing unit for demultiplexing the second multiplexed optical signal transmitted to the other end of the second optical signal transmission cable to obtain the third and fourth optical signals; , And tenth, eleventh, and twelfth input / output terminals. The third optical signal obtained from the second demultiplexer is supplied to the eleventh input / output terminal from the twelfth input / output terminal. And a fourth bidirectional wavelength-division multiplexing coupler for transmitting the sixth optical signal from the tenth input / output terminal to the twelfth input / output terminal. is, the first data reproducing unit is obtained from the second of said first optical signal and said first demultiplexing means derived in the fifth input and output terminals of the bidirectional wavelength multiplexing coupler The second optical signal is formed to include first photoelectric conversion means for performing photoelectric conversion on each of the second optical signals, and the second data reproducing unit includes: Is formed to include a second photoelectric conversion means for performing photoelectric conversion to the fifth optical signal derived in the second input and output terminals of the serial first bidirectional wavelength multiplexing coupler,
Third data reproducing unit, the fourth obtained from the fourth to the third optical signal and said second demultiplexing means derived in the eleventh input and output terminals of the bidirectional wavelength multiplexing coupler the formed including a third photoelectric conversion means for performing photoelectric conversion to each of the optical signal, the data reproducing portion of the fourth is derived to the eighth output terminal of the third bidirectional wavelength multiplexing coupler 64. The data transmission apparatus according to claim 63, further comprising fourth photoelectric conversion means for performing photoelectric conversion on the sixth optical signal. And 66. seventh optical signal forming section for converting the seventh serial data to the seventh optical signal having a second center wavelength, the serial data of the first 8 and a fourth center wavelength of an optical signal forming part of the eighth is provided to convert the optical signal of the eighth, the first optical signal processing section has a first, second and third input and output ends, the second optical signal From the first input / output terminal to the third input / output terminal to be guided to the first multiplexing means, and the seventh optical signal passed through the first multiplexing means is transmitted to the third multiplexing means. A first optical circulator that is connected to the second input / output end from the input / output end of
A third optical signal processing unit having fourth, fifth, and sixth input / output terminals, for passing the seventh optical signal from the fourth input / output terminal to the sixth input / output terminal; And guiding the second optical signal to the other end of the first optical signal transmission cable through the first demultiplexing means, and transmitting the second optical signal obtained from the first demultiplexing means from the sixth input / output end. A second optical circulator communicating with the fifth input / output terminal is additionally formed. The second optical signal processing unit has seventh, eighth, and ninth input / output terminals. Is transmitted from the seventh input / output terminal to the ninth input / output terminal and guided to the second multiplexing means, and the eighth optical signal passed through the second multiplexing means is transmitted to the second multiplexing means. third optical circulator that makes communication with the input and output terminals of the ninth to input and output terminals of the eighth is formed is added, a fourth optical signal processing unit, the first , An eleventh and a twelfth input / output terminal, and allows the eighth optical signal to pass from the tenth input / output terminal to the twelfth input / output terminal. and it guides the other end of the second optical signal transmission cable, providing communication to the fourth optical signal obtained from the second demultiplexing means to input and output terminals of the first 11 from the input and output end of the first 12 A fourth optical circulator is additionally formed, and the second data reproducing unit also performs photoelectric conversion on the seventh optical signal guided to the second input / output terminal of the first optical circulator. Wherein the fourth data reproducing unit also performs photoelectric conversion on the eighth optical signal led out to the eighth input / output terminal of the third optical circulator. 66. The data transmission device according to claim 65, wherein: