JP2003061114A - Data transmission method and apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To properly realize serial transmission of digital data configuring a 4:4:4 form HD signal and a D-Cinema signal whose quantization bit number exceeds 10 bits or the like by utilizing an existing circuit configuration component. SOLUTION: A Y data sequence and a CB/CR data sequence are obtained by separating them from digital data configuring the D-Cinema signal adopting a frame rate of 24 Hz, 25 Hz or 30 Hz and a number of quantization bits of 12-bit, 14-bit, or 16-bit, synchronous word data are inserted to each of the obtained Y data sequence and CB/CR data sequence to form first and second composite word sequence data, 8B/10B conversion is applied to the first and second composite word sequence data and then P/S conversion is applied to them to obtain first and second serial data and they are transmitted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The invention described in the claims of the present application relates to a luminance signal data sequence and a color difference signal data sequence which form a specific digital video signal, or
Based on the red primary color signal data series, the green primary color signal data series, and the blue primary color signal data series, a plurality of composite word string data each containing synchronization word data is obtained, and 8 bits / 10 bits for each of them The present invention relates to a data transmission method of performing conversion and conversion into serial data, and sending out a plurality of serial data obtained as a result, and a data transmission device in which such a method is implemented.

[0002]

2. Description of the Related Art In the field of transmission of digital data containing information data representing various kinds of signal information such as image information, the digital data is serial data, an electric signal based on the serial data is obtained, and the coaxial data is obtained. A system that transmits through a transmission line formed by using a cable or a twisted pair line,
Alternatively, the digital data is converted to serial data, and the serial data is converted into an optical signal,
A system and the like for transmitting through a transmission line formed by using a fiber have been put into practical use.

As one of such digital data transmission systems, a fiber channel system (Fibr
What is called e Channel System) is known. Digital data handled under a digital data transmission system such as this fiber channel system is converted into 10 bits every 8 bits on the transmission side, and the conversion is prepared in advance in a conversion table. 8 bit / 10 bit conversion (8B / 10B conversion), which is to comply with the above, is performed to form word string data. And what is actually transmitted is
The word string data formed by 8B / 10B conversion is further subjected to parallel / serial conversion (P / S conversion) to obtain serial data.

On the receiving side, serial / parallel conversion (S / P conversion) is performed on the received serial data.
Is applied to form word string data, and the word string data is converted into 8-bit data every 10 bits, and the conversion is performed in accordance with a conversion table prepared in advance. 10 bits / 8 bits Conversion (10B / 8B conversion) is performed. In this way, the original digital data is reproduced from the word string data formed by the 10B / 8B conversion.

As described above, the data transmission performed by subjecting the digital data to be transmitted to the 8B / 10B conversion brings about good transmission quality by using the 10-bit word having the selected content. Is recognized as

Under a digital data transmission system such as a fiber channel system, digital data transmitted as word string data is a minimum called "frame" as shown in FIG. Independent packets are formed according to the data format. "Frame" shown in FIG.
In that case, the whole consists of 2148 bytes,
The contents are the 4-byte frame start part, 2
A 4-byte frame header part, a 64-byte frame header part, a 2048-byte payload frame part, a 4-byte frame error check part, and a 4-byte frame end part are successively arranged.

A 2048-byte payload portion of each portion constituting these "frames" stores word string data representing signal information. That is, when word string data is transmitted, a large number of "frames" storing word string data of a maximum of 2048 bytes are formed in the payload portion on the transmitting side, which are sequentially transmitted, and sequentially on the receiving side. The word string data is retrieved from the payload portion of each of the many incoming "frames".

Such word string data is, for example, 1
It is formed by a string of 0-bit word data (10-bit word data), and each of the 10-bit word data has 10 bits in which the number of "1" is larger than the number of "0". The number of 0s is larger than the number of 1s, or the number of 1s is equal to the number of 0s. In representing the states of the respective numbers of "1" and "0", for example, the idea of running disparity (Running Disparity: RD) is introduced, and the number of "1" is the number of "0". When it is more than, the running disparity (RD) is said to be positive, and when the number of "0" is more than the number of "1", R
We say that D is negative, and we further say that RD is neutral when the number of "1s" is equal to the number of "0s". Then, word data in which the number of "1" is greater than the number of "0" is word data whose RD is positive, word data in which the number of "0" is greater than the number of "1" is word data whose RD is negative,
Word data in which the number of “1” and the number of “0” are equal is RD
Is referred to as neutral word data (neutral word data).

When the word string data is transmitted as described above, the receiving side performs S / P conversion to obtain word string data based on the received serial data, and further, the S / P conversion. 10B performed on word string data obtained by / P conversion
In / 8B conversion, for example, it is necessary to properly grasp each word data having a 10-bit structure. Therefore, on the transmission side, the word string data transmitted as serial data is inserted with the synchronization word data. Is made appropriately. This synchronization word data has a specific code that is not used as word data for transmitting information. Then, when the synchronization word data is inserted, when the immediately preceding word data has a negative RD, the RD is positive.
Further, when the immediately preceding word data has RD as positive, RD is made negative.

Such synchronization word data is, for example,
It is 10-bit word data DS10 called by the code name K28.5. FIG. 12 shows 10-bit word data D called by the code name K28.5.
S10 indicates the 10-bit word data DS10
When the CRD, which is the RD based on the word data arranged immediately before that, is negative (-), "001
111 1010 ", and when the CRD, which is the RD based on the immediately preceding word data, is positive (+), it is set to" 110000 0101 "with RD being negative.

On the other hand, in the field of video signals, digitization has been attempted from the viewpoint of diversifying transmission information and improving the quality of reproduced images. For example, it is formed by digital data representing video signal information. High-definition television (High Definition
nition Television (HDTV) system and the like have been proposed. Digital video signals (hereinafter referred to as HD signals) under the HDTV system are, for example, BTA (Br
Oadcasting Technology Association: formed according to the standards established by the Broadcasting Technology Development Association), Y, C _B
/ C _R format and G, B, R format.
In the case of Y, C _B / C _R format, Y means a luminance signal, and C
_B and C _R denotes color difference signal. In the case of the G, B, and R formats, G, B, and R mean a green primary color signal, a blue primary color signal, and a red primary color signal, respectively.

Such an HD signal has a frame rate of 30 Hz or 30 / 1.001 Hz (in the present application, these are referred to as 30 Hz), the total number of lines in each frame is 1125, and effective per line. The number of data samples is 1920 and the sampling frequency is 74.25MHz or 7
4.25 / 1.001 MHz (in the present application, all of these are referred to as 74.25 MHz).

In the case of Y, C _B / C _R format, C _B
Data series and C _R data series of each of the sampling frequency is 1/2 of the sampling frequency of the Y data sequence. In the following, if necessary, Y, C _B / C _R
The format is expressed as 4: 2: 2 format. In the case of the G, B, and R formats, the sampling frequencies of the G data series, B data series, and R data series are the same. In the following, the G, B and R formats will be expressed as 4: 4: 4 format as necessary.

In a 4: 2: 2 format HD signal, each frame image has a first frame image at a frame rate of 30 Hz.
Divided into a field image and a second field image,
Field rate 60Hz or 60 / 1.001
Hz (in the present application, all of these are referred to as 60 Hz), which is a signal for interlaced scanning, and has a data format as shown in FIG.
FIG. 13 shows each line in an HD signal of 4: 2: 2 format for interlaced scanning.

In the data format as shown in FIG. 13, a luminance signal data series (Y data series) representing the luminance signal information in the video signal and a color difference signal data series (C representing the color difference signal information in the video signal.
_B / C _R data series) and Y data series and C
Each of the _B / C _R data sequences has a quantization bit number of 10 bits, so that each of the word data forming it has a 10-bit structure, and its word transmission rate is, for example, 74.25 MBps. To be done.

In the Y data series, each line portion is formed by connecting the horizontal blanking portion with the video data portion (effective line portion), and immediately before each video data portion, 4 words (3FF,, 000,000) are formed. , XYZ; 3FF, 000, and XYZ are hexadecimal representations). Timing reference code data (SAV: Start of Ac
tive video) and immediately after each video data portion, timing reference code data (EAV: End of End of 4 words (3FF,, 000,000, XYZ)).
Active Video) is allocated.

Similarly, even in the C _B / C _R data series, each line portion is formed by connecting the horizontal blanking portion with the video data portion (effective line portion). Word (3FF,, 000,000, XYZ)
The timing reference code data SAV consisting of 4 words (3FF,
Timing reference code data EAV composed of, 000,000, XYZ) is arranged. Each of the timing reference code data EAV and SAV in the Y data series is arranged in each horizontal blanking section in the Y data series, and
Each of C _B / C timing reference in _R data sequence code data EAV and SAV are arranged in each horizontal blanking section at C _B / C _R data series.

4 words (3FF,, 000,000, XY
Z), the first 3 words (3FF, 000,0)
00) is for establishing word synchronization or line synchronization, and the last one word (XYZ) is
This is for identifying the first field and the second field in the same frame, or for identifying the timing reference code data SAV and the timing reference code data EAV (the same applies below).

Also in the 4: 4: 4 HD signal, each frame image is divided into a first field image and a second field image under the condition that the frame rate is 30 Hz, and the field rate is 60 Hz. It is a signal for interlaced scanning, and has a data format as shown in FIG. FIG. 14 shows each line of the 4: 4: 4 format HD signal for interlaced scanning.

In the data format as shown in FIG. 14, the green primary color signal data series (G data series) representing the green primary color signal information in the video signal and the blue primary color signal representing the blue primary color signal information in the video signal. A data series (B data series) and a red primary color signal data series (R
Data sequence), and each of the G data sequence, the B data sequence, and the R data sequence has a quantization bit number of 10 bits, and thus each of the word data forming the quantization data number has a 10-bit configuration. The word transmission rate is, for example, 74.25 MBps.

In each of the G data series, the B data series, and the R data series, each line portion is formed by connecting the horizontal blanking portion with the video data portion (effective line portion), and immediately before each video data portion. 4 words (3FF, 00
Of the timing reference code data SAV consisting of 10,000 and XYZ) and 4 words (3FF,, 000,000 and XYZ) immediately after each video data section.
Timing reference code data EAV consisting of Timing reference code data EAV and SA in each of the G data series, B data series and R data series
Each V is arranged in each horizontal blanking section in each of the G data series, the B data series, and the R data series.

In the current HDTV system, the 4: 2: 2 format or 4: 4: is used for interlaced scanning under the frame rate of 30 Hz as described above.
4 format HD signals are used.
A frame rate of 6 as the next-generation HDTV system
At 0 Hz, each frame image has the first and second frame images.
Y, C _B / C _R format (4: 2: 2 format) consisting of a Y data series and a C _B / C _R data series, which is formed for sequential scanning without being divided into fields, or
A system using an HD signal of G, B, R format (4: 4: 4 format) composed of a G data series, a B data series, and an R data series has been proposed. 4: for progressive scanning
The 2: 2 format or 4: 4: 4 format HD signal is referred to as a progressive HD signal.
Hereinafter, a progressive HD signal will be referred to as a progressive HD signal.

Digital data forming a progressive HD signal having a frame rate of 60 Hz is S of the United States.
MPTE (Society of Motion Picture and Television)
Engineers: Society of Film and Television Engineers): Standards established by SMPTE 247M,
For example, the data format is as shown in FIGS. 15, 16 and 17. FIG. 15 shows 4:
Progressive H in 2: 2 format or 4: 4: 4 format
One frame of the D signal is shown, and FIG. 16 shows 4 :.
FIG. 17 shows one line of a progressive HD signal of 2: 2 format, and FIG. 17 shows one line of a progressive HD signal of 4: 4: 4 format.

The SMP shown in FIGS. 15, 16 and 17
In addition to the frame rate of 60 Hz, the total number of lines in each frame is 1125 lines, the number of effective lines per frame is 1080 lines, and the number of effective data samples per line is 1920 samples Frequency: 14
8.5MHz or 148.5 / 1.001MHz
(In the present application, any of these is 148.5 MH
z), the number of quantization bits: 8 bits, 10 bits, etc. are determined. And, in case of 4: 2: 2 format, the parallel data interface is 8 bits ×
2 = 16 bits or 10 bits × 2 = 20 bits, and in the case of the 4: 4: 4 format, 8 bits × 3 = 24 bits or 10 bits × 3 = 30 bits.

In a 4: 2: 2 format progressive HD signal, each line of the Y data series and the C _B / C _R data series has a video data section (effective line section) in the horizontal blanking section. Are formed in a row, and 4:
In a 4: 4 format progressive HD signal, each line of the G data series, the B data series, and the R data series is formed by connecting the horizontal blanking section with the video data section (effective line section). It

The horizontal blanking unit includes a Y data sequence and C _B / which form a progressive HD signal of 4: 2: 2 format.
C _R data series each line of each of the, and, 4: 4: 4
Format G progressive data, G data sequence, B
The timing reference code data EAV, the line number data, the error detection code data, the auxiliary data, and the timing reference code data SAV are sequentially arranged and formed in each line of either the data series or the R data series. On the other hand, in the case of a progressive HD signal of the 4: 2: 2 format, the video data portion has luminance signal data (Y signal data) for each line in the Y data series.
Of the color difference signal data (C _B / C) for each line in the C _B / C _R data series.
The _CR signal data is arranged and formed, and is also 4: 4: 4.
In the case of a progressive HD signal of the format, green primary color signal data (G signal data) is arranged for each line in the G data series, and blue primary color is formed for each line in the B data series. The signal data (B signal data) is arranged and formed, and the red primary color signal data (R signal data) is arranged and formed for each line in the R data series.

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

The D-Cinema signal can be said to be, for example, a progressive digital video signal having a frame rate of 24 Hz or 24 / 1.001 Hz (in the present application, both of them are referred to as 24 Hz). -The frame rate of the Cinema signal is not limited to 24 Hz, but 25 Hz, 30
Hz and the like are also possible. Frame rate 24Hz, 25
For digital data forming digital video signals of Hz and 30 Hz, the data format is S
Standardized by MPTE 247M, frame rate:
In addition to 24 Hz, 25 Hz and 30 Hz, the number of effective data samples per line: 1920 samples, the number of effective lines per frame: 1080 lines, sampling frequency: 74.25 MHz, the number of quantization bits: 8 bits or 10 bits, etc. ing. And if the parallel data interface is in 4: 2: 2 format,
8 bits x 2 = 16 bits or 10 bits x 2 = 2
0 bit, and in case of 4: 4: 4 format, 8 bits x 3
= 24 bits or 10 bits × 3 = 30 bits.

Under these circumstances, regarding the digital data forming the D-Cinema signal, for example, in order to further improve the resolution of an image reproduced based on the digital data, the quantization bit number is set to 8 bits or It has been desired that the number of bits exceeds 10 bits, for example, 12 bits, 14 bits, 16 bits, or the like. However, in the standard relating to the digital data forming the current digital video signal including the above-mentioned SMPTE 247M etc., although the standardization of the number of quantization bits of 8 bits or 10 bits has been achieved, The number of quantization bits exceeds 8 or 10 bits, for example, 12 bits, 14 bits,
There is no standardization for 16 bits or the like.

[0030]

Under the circumstances as described above, the digital data forming the HD signal of 4: 4: 4 format for progressive scanning, or the quantization bit number exceeds 10 bits. The digital data forming the D-Cinema signal in the 4: 2: 2 format or the 4: 4: 4 format has a problem associated with its transmission. Such a problem is that in transmission of digital data forming a digital video signal, since the transmission path is simplified, serial transmission converted into serial data for transmission is desired. In accordance with BTA S-004, which is the standard established by the above-mentioned BTA, digital data forming a 4: 2: 2 format HD digital video signal in which the number of quantization bits is 8 bits or 10 bits. HD SDI (High
That is, the transmission using the Definition Serial Digital Interface) is only standardized. That is, it is digital data of a format different from digital data forming a digital video signal of 4: 2: 2 format in which the number of quantization bits is 8 bits or 10 bits,
Digital data forming a 4: 4: 4 format HD signal for interlaced scanning, 4: 2: 2 format or 4: 4: 4 format with a quantization bit number exceeding 10 bits
The serial transmission of digital data or the like forming the D-Cinema signal of the format is not standardized.

Under these circumstances, it is assumed that the digital data forming the HD signal of the 4: 4: 4 format for the interlaced scanning described above or the quantization bit number exceeds 10 bits 4: 2: 2. For digital data forming a D-Cinema signal in the format or 4: 4: 4 format, serial transmission is desired. Then, the serial transmission is 8B / 10B based on the digital data to be transmitted on the transmitting side.
As the conversion is performed, word string data including sync word data to which a predetermined code is assigned, such as K28.5 described above, is formed, and the word string data is serialized. It is used in a digital data transmission system such as the above-mentioned fiber channel system in constructing a transmission / reception circuit, for example, in a transmission method in which it is converted into data and transmitted. This is a strong demand from the viewpoint that the existing integrated circuit device (IC device) can be effectively used.

However, in the prior art, the digital data for forming the HD signal of the 4: 4: 4 format for the interlaced scanning, and the 4: 2: 2 format in which the number of quantization bits exceeds 10 bits. Or D in 4: 4: 4 format
8B / 10B conversion is performed on the serial transmission of the digital data forming the Cinema signal based on the digital data to be transmitted, and
With the transmission method in which the word string data that is supposed to include the synchronization word data to which the predetermined code is assigned is formed, and the word string data is converted to serial data and transmitted so as to be transmitted appropriately, There is no specific example of a transmission system that can be realized. Further, no documents or the like describing the technology relating to such a serial transmission system can be found.

In view of such a point, the invention described in the claims of the present application performs the 8B / 10B conversion based on the digital data to be transmitted, and also performs the 8B / 10B conversion as described above in K28.5. , With a transmission method in which word string data including sync word data to which a predetermined code is assigned is formed, and the word string data is converted into serial data and transmitted so as to be transmitted, for example, , Digital data forming a 4: 4: 4 format HD signal for interlaced scanning, or a quantization bit number exceeding 10 bits 4: 2:
Provided are a data transmission method capable of serial transmission of digital data or the like forming a D-Cinema signal of 2 format or 4: 4: 4 format, and a data transmission apparatus for implementing the method.

[0034]

The data transmission method according to the invention described in any one of claims 1 to 5 in the claims of the present application has a frame rate of 24.
Hz, 25 Hz or 30 Hz, the number of lines in each frame is 1125, the number of effective lines in each frame is 1080, and the sampling frequency is 7
4.25 MHz, the number of valid data samples in each line is set to 1920 samples, and the number of quantization bits is 1.
2 bits, and 14 bits or 16 bits, from the digital video signal data comprising a Y data sequence and the C _B / C _R data series, separates the Y data sequence and the C _B / C _R data series each other Synchronous word data having a preset code is inserted into each of the obtained Y data sequence and C _B / C _R data sequence to form first and second composite word sequence data, and the first and second composite word sequence data are formed. And 8B / 10B conversion to each of the second composite word string data and then P / S conversion to obtain first and second serial data, and the obtained first and second serial data are transmitted. It is supposed to be sent in order.

In particular, in the data transmission method according to the invention described in claim 4, the first sync word data having a preset code is inserted in the Y data sequence, and C _B / C _R Second sync word data having a preset code different from the first sync word data is inserted into the data series to form first and second composite word string data.

In the data transmission method according to the invention described in any one of claims 6 to 10 in the claims of the present application, the field rate is 60 Hz, the frame rate is 30 Hz, and the number of lines in each frame is Digital video signal data that is set to 1125 lines and has a quantization bit number of 10 bits and that includes an R data series, a G data series, and a B data series is converted into an R data series, a G data series, and a B data series. Data conversion is performed to obtain a first data series and a second data series that make the number of quantization bits equal to each other, and preset to each of the obtained first data series and second data series. Synchronous word data having a code is inserted to form first and second composite word string data, and the first and second composite word strings are formed. Each of the data is subjected to 8B / 10B conversion and then P / S conversion to obtain first and second serial data, and the obtained first and second serial data are transmitted for transmission. To be done.

In particular, in the data transmission method according to the present invention as defined in claim 9, the first synchronization word data having a preset code is inserted into the first data sequence, and the second synchronization word data is inserted. Second sync word data having a preset code different from the first sync word data is inserted into the data series to form first and second composite word string data.

Claim 11 in the claims of the present application
The data transmission method according to any one of claims 1 to 15 has a frame rate of 24 Hz and 25H.
z or 30 Hz, the number of lines in each frame is 1125, the number of effective lines in each frame is 1080, and the sampling frequency is 74.25 MH.
z, the number of valid data samples in each line is 1920
Set to sample, quantization bit number is 12 bits, 1
R data series and G with 4 or 16 bits
An R data series, a G data series, and a B data series are separately obtained from digital video signal data including a data series and a B data series, and the obtained R data series, G data series, and B data series are obtained. The sync word data having a preset code is inserted into each of the first,
Forming second and third compound word string data, and 8B / for each of the first, second and third compound word string data.
After 10B conversion, P / S conversion is performed to obtain first, second and third serial data, and the obtained first, second and third serial data are transmitted for transmission. It

In particular, in the data transmission method according to the invention described in claim 14, the first synchronization word data having a preset code is inserted into the R data sequence,
The second sync word data having a preset code different from the first sync word data is inserted into the G data series, and the preset is different from each of the first and second sync word data into the B data series. The third sync word data having the generated code is inserted to form the first, second and third composite word string data.

Claim 16 in the claims of the present application
The data transmission device according to any one of claims 1 to 19 has a frame rate of 24 Hz, 25H.
z or 30 Hz, the number of lines in each frame is 1125, the number of effective lines in each frame is 1080, and the sampling frequency is 74.25 MH.
z, the number of valid data samples in each line is 1920
Set to sample, quantization bit number is 12 bits, 1
Y data series and C, 4 or 16 bits
_B / C from the _R data series and the digital video signal data comprising, Y data sequence and the C _B / C _R and data processing means for data series and the can separated from each other, Y data sequence obtained by the data processing means And first and second synchronization word insertion means for inserting synchronization word data having a preset code into each of the C _B / C _R data sequences to form first and second composite word sequence data, First and second formed by first and second synchronization word insertion means
First and second serial data forming means for obtaining first and second serial data by performing 8B / 10B conversion and then P / S conversion on each of the composite word sequence data
And data transmitting means for transmitting the first and second serial data obtained from the second serial data forming means for transmission.

Claim 20 in the claims of the present application
The data transmission device according to the invention described in any one of claims 23 to 23 has a field rate of 60 Hz, a frame rate of 30 Hz, the number of lines in each frame is set to 1125, and the number of quantization bits is 10.
From digital video signal data including R data series, G data series, and B data series, which are bits,
Data processing means for performing data conversion on the data series, the G data series, and the B data series to obtain a first data series and a second data series that make the number of quantization bits equal to each other, and a data processing unit. First and second synchronization word insertion for inserting synchronization word data having a preset code into each of the first data sequence and the second data sequence to form first and second composite word sequence data Means and 8B / 1 for each of the first and second composite word sequence data formed by the first and second synchronization word insertion means.
First and second serial data forming means for obtaining the first and second serial data by performing P / S conversion after performing 0B conversion, and first obtained from the first and second serial data forming means. And data transmitting means for transmitting the second serial data to transmit the second serial data.

Claim 24 in the claims of the present application
The data transmission apparatus according to any one of claims 1 to 27 has a frame rate of 24 Hz, 25H.
z or 30 Hz, the number of lines in each frame is 1125, the number of effective lines in each frame is 1080, and the sampling frequency is 74.25 MH.
z, the number of valid data samples in each line is 1920
Set to sample, quantization bit number is 12 bits, 1
R data series and G with 4 or 16 bits
Data processing means for separating the R data series, the G data series and the B data series from the digital video signal data including the data series and the B data series, and the R data series obtained from the data processing means, First, second and third synchronization for inserting synchronization word data having a preset code into each of the G data sequence and the B data sequence to form first, second and third composite word sequence data P / S after 8B / 10B conversion is applied to each of the word insertion means and the first, second and third composite word sequence data formed by the first, second and third synchronization word insertion means.
First, second and third serial data forming means for converting and obtaining first, second and third serial data, and first obtained from the first, second and third serial data forming means , And data transmitting means for transmitting to transmit the second and third serial data.

The data transmission method according to the invention described in any one of claims 1 to 5 in the claims of the present application as described above, or any one of claims 16 to 19 In the data transmission device according to the described invention, the frame rate is 24 Hz, 25
Hz or 30 Hz, the number of lines in each frame is 1125, the number of effective lines in each frame is 1080, and the sampling frequency is 74.25M.
Hz, 192 valid data samples on each line
It is set to 0 samples, the number of quantization bits is 12 bits,
And 14-bit or 16-bit, Y data sequence and the C _B / C _R data sequence and based on the Y data sequence and C _B / C _R data series to form a digital video signal data comprising a sync word data to each Each of the first and second composite word string data in which is inserted is 8B / 10.
When the B conversion and the P / S conversion are performed and further converted into serial data and transmitted, the synchronization word data having a preset code is included in each of the first and second composite word sequence data. It will be included.

In each of the first and second composite word sequence data transmitted as serial data, the synchronization word data is the Y data sequence and the C _B / C _R data sequence on the receiving side. It is supposed that the sync data is properly detected as the sync data required for the process for reproducing. In addition, the word string data included in each of the first and second composite word string data is obtained through 8B / 10B conversion, thereby providing good transmission quality. Therefore, on the receiving side, the first received signal can be obtained while obtaining good transmission quality.
Also, a state in which the data synchronization state required for the processing for reproducing the Y data series and the C _B / C _R data series based on the second composite word string data is reliably obtained is ensured.

The data transmission method according to the invention described in any one of claims 1 to 5 in the claims of the present application, or claims 16 to 16 in the claims of the present application According to the data transmission device according to the invention described in any one of 19 to 8, 8B / 10B conversion is performed on the first and second composite word string data in which the synchronization word data is inserted, respectively, and the first obtained thereby. And first and second composite word sequence data
To serial data, transmitting the first and second serial data, receiving the first and second serial data on the receiving side, and receiving the received first and second serial data. The conversion into the first and second composite word string data and the like can be performed by using, for example, an integrated circuit device used for transmitting and receiving digital data under the fiber channel system.

The frame rate is set to 24 Hz, 25
Hz or 30 Hz, the number of lines in each frame is 1125, the number of effective lines in each frame is 1080, and the sampling frequency is 74.25M.
Hz, 192 valid data samples on each line
It is set to 0 samples, the number of quantization bits is 12 bits,
Digital video signal data consisting of a Y data sequence and a C _B / C _R data sequence, which is 14 bits or 16 bits, has a quantization bit number exceeding 10 bits and is a 4: 2: 2 format D. -Contains the digital data forming the Cinema signal. Therefore, 8B / 10B conversion is performed on the basis of the digital data to be transmitted, and word string data that is supposed to include synchronous word data to which a predetermined code is assigned is formed, and Digital data for forming a D-Cinema signal of 4: 2: 2 format in which the number of quantization bits exceeds 10 bits by a transmission method in which word string data is converted into serial data and transmitted so as to be transmitted. Will be able to perform serial transmission.

The data transmission method according to the invention described in any one of claims 6 to 10 in the scope of claims of the present application or any one of claims 20 to 23. In the data transmission apparatus according to the present invention, the field rate is 60 Hz, the frame rate is 30 Hz, the number of lines in each frame is set to 1125, and the number of quantization bits is 10 bits. First and second sync word data are inserted in each of R data series, G data series and B data series forming digital video signal data including a data series and a B data series.
When the 8B / 10B conversion and the P / S conversion are performed on each of the composite word string data of, and further converted into the serial data and transmitted, the first and second composite word string data respectively include: The synchronization word data having a preset code is included.

In each of the first and second composite word sequence data transmitted as serial data, the synchronization word data is the R data series, G
It is supposed that the synchronization data is properly detected as the synchronization data required for the processing for reproducing the data sequence and the B data sequence. The word string data included in each of the first and second compound word string data is 8B / 10.
By being obtained through the B conversion, good transmission quality is brought about. Therefore, on the receiving side, the reproduction of the R data sequence, G data sequence, and B data sequence based on the received first and second composite word sequence data is performed while obtaining good transmission quality. The state in which the data synchronization state required for the processing is reliably obtained is ensured.

The data transmission method according to the invention described in any one of claims 6 to 10 in the claims of the present application, or claims 20 to 20 in the claims of the present application According to the data transmission device according to the invention described in any one of items 23 to 23, 8B / 10B conversion is performed on the first and second composite word sequence data in which the synchronization word data is inserted, and the first obtained thereby. And conversion of the second composite word string data into first and second serial data, transmission of the first and second serial data, and further the first on the receiving side.
And the reception of the second serial data, the conversion of the received first and second serial data into the first and second composite word sequence data, etc. This can be done using integrated circuit devices used for transmission and reception.

The field rate is 60 Hz, the frame rate is 30 Hz, the number of lines in each frame is set to 1125, and the number of quantization bits is 1.
Digital video signal data, which is 0 bit and includes an R data series, a G data series, and a B data series, includes digital data forming an HD signal of 4: 4: 4 format for interlaced scanning. . Therefore, 8B / 10B conversion is performed on the basis of the digital data to be transmitted, and word string data that is supposed to include synchronous word data to which a predetermined code is assigned is formed, and Serial transmission of digital data or the like forming a 4: 4: 4 format HD signal for interlaced scanning can be performed by a transmission method in which word string data is converted into serial data and transmitted so as to be transmitted. You can do it.

Further, the data transmission method according to the invention described in any one of claims 11 to 15 in the scope of claims of the present application or any one of claims 24 to 27 is described. In the data transmission apparatus according to the present invention, the frame rate is 24 Hz, 25
Hz or 30 Hz, the number of lines in each frame is 1125, the number of effective lines in each frame is 1080, and the sampling frequency is 74.25M.
Hz, 192 valid data samples on each line
It is set to 0 samples, the number of quantization bits is 12 bits,
Synchronous word data based on the R data series, G data series and B data series forming 14 bits or 16 bits and forming digital video signal data including R data series, G data series and B data series 8B / 10B conversion and P / S conversion are performed on each of the first, second, and third composite word string data in which is inserted, and the first, second, and third composite word string data are converted into serial data and transmitted. Each of the second and third compound word string data includes the sync word data having the preset code.

In each of the first, second and third compound word string data transmitted as serial data, the sync word data is R data series, G data series and B data on the receiving side. It is supposed that the synchronization data is properly detected as the synchronization data required for the processing for reproducing the data series. Further, the word string data included in each of the first, second, and third compound word string data is obtained through 8B / 10B conversion, so that good transmission quality is brought about. Therefore, on the receiving side, R data series, G data series, and B data series based on the received first, second, and third composite word string data are obtained under the condition that good transmission quality is obtained. The state in which the data synchronization state required for the processing for reproduction of is surely obtained is secured.

The data transmission method according to the invention described in any one of claims 11 to 15 in the claims of the present application, or claims 24 to 24 in the claims of the present application According to the data transmission device of the invention described in any one of Nos. 27 to 27, the first, second and third data in which the synchronization word data is inserted respectively.
8B / 10B conversion of the composite word string data of, the conversion of the first, second and third composite word string data obtained thereby into the first, second and third serial data, and the first and second Transmission of the second and third serial data, and further reception of the first, second and third serial data at the receiving side, first and second of the received first, second and third serial data. The conversion into the second and third composite word string data can be performed using, for example, an integrated circuit device used for transmitting and receiving digital data under the fiber channel system.

The frame rate is set to 24 Hz, 25
Hz or 30 Hz, the number of lines in each frame is 1125, the number of effective lines in each frame is 1080, and the sampling frequency is 74.25M.
Hz, 192 valid data samples on each line
It is set to 0 samples, the number of quantization bits is 12 bits,
Digital video signal data consisting of an R data sequence, a G data sequence and a B data sequence, which is 14 bits or 16 bits, has a quantization bit number exceeding 10 bits and is a 4: 4: 4 format D. -Contains the digital data forming the Cinema signal. Therefore, based on the digital data to be transmitted, 8B / 10B
The conversion is performed, and the word string data that is supposed to include the synchronization word data to which the predetermined code is assigned is formed, and the word string data is converted into serial data and sent out for transmission. With this transmission method, it is possible to perform serial transmission of digital data or the like forming a 4: 4: 4 format D-Cinema signal with a quantization bit number exceeding 10 bits.

[0055]

1 is a block diagram of a data transmission method according to an embodiment of the present invention. An example of the data transmission device according to the invention described in any one of claims 16 to 19 in the range is shown.

In the example shown in FIG. 1, digital data DCNN forming a 4: 2: 2 format D-Cinema signal having a quantization bit number of 12, 14, or 16 bits is supplied to the data processing unit 10. Supplied.

The digital data DCNN supplied to the data processing unit 10 has a word transmission rate of 74.25 MB.
12 bits, 12 bits and the Y data sequence, a word transmission rate and 74.25MBps forming a 14-bit or 16-bit word sequence data, C _B / C _R data sequence which forms a 14-bit or 16-bit word sequence data to ps And each timing reference code data SA
V and EAV are parallel-multiplexed in the aligned state, and the overall word transmission rate is set to 74.25 MBps 24
It is assumed to form bit, 28-bit or 32-bit word string data.

The data processing unit 10 forms digital data DCNN which forms 24-bit, 28-bit or 32-bit word string data with a word transmission rate of 74.25 MBps. The word transmission rate is 74.25 M.
Y data series DYV forming 12-bit, 14-bit or 16-bit word string data set to Bps, and 12-bit set to 1 at word transfer rate of 74.25 MBps
C _B forming 4-bit or 16-bit word string data
/ C _R data series DCV are separated from each other. Y data series DYV and C _B / C obtained from the data processing unit 10
_{The R} data series DCV are supplied to the synchronization word insertion / serial data forming units 11 and 12, respectively.

The sync word insertion / serial data forming section 11 to which the Y data series DYV is supplied is also supplied with the horizontal sync pulse signal SH of the D-Cinema signal formed by the digital data DCNN. Then, in the sync word insertion / serial data forming unit 11, the Y data series DYV is supplied to the data selection and extraction unit 13. Sixteen parallel input terminals are provided at the input end for the Y data series DYV in the data selection and extraction unit 13. When the Y data series DYV is 16-bit word string data, the Y data series DYV is input through all 16 parallel input terminals. On the other hand, Y
When the data series DYV is 12-bit or 14-bit word string data, the Y data series D is transmitted through 12 or 14 of 16 parallel input terminals.
YV is input, and the remaining four or two are fixed to "low" or "high". As a result, the Y data series DYV is apparently converted into 16-bit word string data.

The data selection and extraction section 13 receives the word transmission rate from the synchronous word data transmission section 14 as 74.25.
The synchronous word data DWS1 of MBps is also supplied. The synchronization word data DWS1 is composed of a plurality of 16-bit word data having a preset code.

Further, in the sync word insertion / serial data forming section 11, the horizontal sync pulse signal SH having a frequency of 74.25 MHz is supplied to the control signal forming section 15. The control signal forming unit 15 uses the horizontal synchronizing pulse signal S.
A control signal CSW1 synchronized with H and a control signal CDS1 are formed, and the control signal CSW1 is sent to the synchronous word data sending unit 1.
4 and the control signal CDS1 to the data selection / extraction section 13.

As a result, the synchronization word data transmission unit 14
Is the synchronous word data DWS according to the control signal CSW1.
1 is sent, and it is supplied to the data selection and extraction unit 13. Then, in the data selection extraction unit 13, when the control signal CDS1 is supplied, the synchronization word data DWS1 is extracted from the synchronization word data transmission unit 14 in accordance with it, and in other cases, the Y data series DYV is left as it is. Select and retrieve data. Thereby,
The data selection extraction unit 13 outputs the synchronization word data transmission unit 14 in the horizontal blanking period portion of each line portion of the Y data series DYV in response to the control signal CDS1.
The process of inserting the sync word data DWS1 from

In a specific example of the process of inserting the synchronization word data DWS1 into the Y data series DYV in the data selection / extraction section 13, as shown in A of FIG. 2, the synchronization word data DWS1 is Y Data series DYV
Of the timing reference code data EAV, the line number data, the error detection code data, and the auxiliary data arranged in the horizontal blanking period portion of each line period portion, immediately before the timing reference code data SAV. Is inserted. That is, the synchronization word data DWS1
Is the timing reference code data S in the horizontal blanking period portion in each line period portion of the Y data series DYV.
It is inserted just before the AV.

The timing at which the synchronization word data DWS1 is inserted into the Y data series DYV is the control signal C.
It is set by SW1 and the control signal CDS1. As a result, the sync word data DWS is output from the data selection and extraction unit 13 to the horizontal blanking period portion in each line period portion.
The Y data series DYV in which 1 is inserted is derived as composite 16-bit word string data DX1 (16) having a word transmission rate of 74.25 MBps.

The composite 16-bit word string data DX1 (16) derived from the data selection / extraction unit 13 is 8B / 1.
It is supplied to the 0 conversion unit 16. In the 8B / 10 conversion unit 16, the composite 16-bit word string data DX1 (16)
8B / 10 conversion in which 16 bits forming each word therein are divided into 8 bits, and each of the divided 8 bits is sequentially converted into 10-bit data according to a conversion table prepared in advance. Apply 16
Composite 20-bit word string data DZ1 (20) having a word transmission rate of 74.25 MBps is formed based on the bit word string data DX1 (16).

Under these circumstances, the synchronization word data sending unit 1
4 and is supplied to the data selection and extraction unit 13,
One example of the synchronous word data DWS1 having a word transmission rate of 74.25 MBps is 8B / 10.
When B conversion is performed, it becomes 8-bit word data that becomes 10-bit word data that is codenamed K28.5, and when 8B / 10B conversion is performed, it becomes 10-bit word data that is codenamed D5.6. Two pieces of 16-bit word data formed by superimposing 8-bit word data on each other are formed in series.

Composite 16-bit word string data DX1 (16) having such sync word data DWS1 inserted
In the composite 20-bit word string data DZ1 (20) obtained by performing 8B / 10B conversion on, the part in which the synchronous word data DWS1 is inserted is as shown in A of FIG. In A of FIG. 3, ANC20 represents 20-bit word data forming auxiliary data, and SA
V20 represents 20-bit word data forming the timing reference code data SAV.

The composite 20-bit word string data DZ1 (20) formed in the 8B / 10B converter 16 is P
It is supplied to the / S converter 17. In the P / S converter 17, the composite 20-bit word string data DZ1 (20)
P / S to convert parallel data to serial data
After conversion, composite 20-bit word string data DZ1
The bit transmission rate is 74.25 × 2 based on (20).
The serial data DS1 of 0 = 1.485 Gbps is obtained, and the serial data DS1 is sent as output data of the sync word insertion / serial data forming unit 11,
It is supplied to the bit multiplexing unit 18.

On the other hand, C_B/ C_RData series DCV supplied
The sync word insertion / serial data forming unit 12
Is a D-Cine formed by the digital data DCNN.
The horizontal sync pulse signal SH of the ma signal is also supplied. That
The sync word insertion / serial data forming unit 12
Is C_B/ C_RData series DCV is the data selection and extraction section
20. C in the data selection and extraction unit 20_B
/ C_R16 parallels are also provided at the input end for the data series DCV.
Input terminals are provided. And C_B/ C _RDay
When the data series DCV is 16-bit word string data
Is C through all 16 parallel input terminals_B/ C
_RThe data series DCV is input. On the other hand, C_B
/ C_RData series DCV is 12 bits or 14 bits
If it is a word sequence data, 16 parallel input
C through 12 or 14 of the force terminals_B/ C
_RData series DCV is input and the remaining 4 or
About 2 pieces, fixed to “low” or “high”
Is determined. Thereby, C_B/ C_RData series DCV
Is apparently regarded as 16-bit word string data.

In the data selection / extraction section 20, the word transmission rate from the synchronous word data transmission section 21 is 74.25.
Synchronous word data DWS2 of MBps is also supplied. The synchronization word data DWS2 is composed of a plurality of 16-bit word data having a preset code.

Further, in the sync word insertion / serial data forming unit 12, the horizontal sync pulse signal SH having a frequency of 74.25 MHz is supplied to the control signal forming unit 22. The control signal forming unit 22 uses the horizontal synchronizing pulse signal S
A control signal CSW2 synchronized with H and a control signal CDS2 are formed, and the control signal CSW2 is transmitted to the synchronous word data sending unit 2
1, and also supplies the control signal CDS2 to the data selection and extraction unit 20.

As a result, the synchronization word data transmission unit 21
Is the synchronous word data DWS according to the control signal CSW2.
2 is sent and is supplied to the data selection and extraction unit 20. The sync word data DWS2 is different from the sync word data DWS1 sent from the sync word data sending unit 14 in the sync word inserting / serial data forming unit 11. Then, in the data selection extraction unit 20, when the control signal CDS2 is supplied, is taken out synchronous word data DWS2 from the synchronous word data sending unit 21 accordingly, in other cases, C _B / C _R Data The series DCV is taken out as it is, and the data is taken out selectively. As a result, the data selection / extraction unit 20 causes the C _B
The / C _R data series DCV is subjected to the processing of inserting the sync word data DWS2 from the sync word data sending section 21 in the horizontal blanking period section in each line section in accordance with the control signal CDS2.

C _B in the data selection and extraction unit 20
/ C _R data sequence In the specific example of a process of inserting a sync word data DWS2 to DCV, the as shown in B in FIG. 2, the synchronous word data DWS2 is, each of the C _B / C _R data sequence DCV Timing reference code data EAV arranged in the horizontal blanking period portion in the line period portion,
The timing reference code data SA is connected to the line number data, the error detection code data, and the auxiliary data.
It is inserted just before V. That is, the synchronization word data DWS2 is inserted immediately before the timing reference code data SAV in the horizontal blanking period portion in each line period portion of the C _B / C _R data series DCV.

Then, the timing at which the synchronization word data DWS2 is inserted into the C _B / C _R data series DCV is set by the control signal CSW2 and the control signal CDS2. As a result, from the data selection and extraction unit 20, the C _B / C _R data series DCV in which the synchronization word data DWS2 is inserted in the horizontal blanking period portion in each line period portion.
Is derived as composite 16-bit word string data DX2 (16) having a word transmission rate of 74.25 MBps.

The composite 16-bit word string data DX2 (16) derived from the data selection and extraction unit 20 is 8B / 1.
It is supplied to the 0 conversion unit 23. In the 8B / 10 converter 23, the composite 16-bit word string data DX2 (16)
8B / 10 conversion in which 16 bits forming each word therein are divided into 8 bits, and each of the divided 8 bits is sequentially converted into 10-bit data according to a conversion table prepared in advance. Apply 16
Composite 20-bit word string data DZ2 (20) having a word transmission rate of 74.25 MBps is formed based on the bit word string data DX2 (16).

Under the circumstances, the synchronization word data sending unit 2
1, and is supplied to the data selection and extraction unit 20,
One example of the synchronous word data DWS2 having a word transmission rate of 74.25 MBps is 8B / 10.
When the B conversion is performed, two 16-bit word data, which are two 8-bit word data that are 10-bit word data called by code name K23.7, are formed in a row.

Composite 16-bit word string data DX2 (16) in which such sync word data DWS2 is inserted
In the composite 20-bit word string data DZ2 (20) obtained by 8B / 10B conversion, the part in which the synchronous word data DWS2 is inserted is as shown in B of FIG. In FIG. 3B, ANC20 represents 20-bit word data forming auxiliary data, and SA
V20 represents 20-bit word data forming the timing reference code data SAV.

The composite 20-bit word string data DZ2 (20) formed in the 8B / 10B converter 23 is P
It is supplied to the / S converter 24. In the P / S conversion unit 24, the composite 20-bit word string data DZ2 (20) is subjected to P / S conversion to generate the composite 20-bit word string data D.
Based on Z2 (20), the bit transmission rate is 74.25.
Serial data DS with × 20 = 1.485 Gbps
2, the serial data DS2 is sent as output data of the sync word insertion / serial data forming unit 12 and supplied to the bit multiplexing unit 18.

In the bit multiplexing unit 18, the serial data DS1 from the P / S conversion unit 17 and the P / S conversion unit 2
An operation of alternately fetching 1-bit addressed from each of the serial data DS2 from 4 is performed, and bit multiplex synthesis processing is performed on the serial data DS1 and the serial data DS2,
Bit transmission rate is 1.485 Gbps × 2 = 2.97
Multiplexed serial data DSM for Gbps is formed.
In this way, the multiplexed serial data DSM obtained from the bit multiplexing unit 18 is converted into the electro-optical conversion unit (E / O conversion unit) 2
5 is supplied.

In the E / O converter 25, the E / O conversion process is performed on the multiplexed serial data DSM, and the center wavelength based on the multiplexed serial data DSM is set to, for example, about 1.3 μm.
An optical signal OS with m bit rate of 2.97G
It is formed as bps, and it is sent out as a transmission signal. The optical signal OS, which is a transmission signal transmitted from the E / O conversion unit 25, is guided to the optical signal transmission cable 27 through the optical connector 26 and transmitted to the reception side through the optical signal transmission cable 27. The optical signal transmission cable 27 is
For example, quartz-based single mode fiber (quartz-based SM
F) is used and formed.

As shown by the broken line in FIG. 1, the serial data DS1 from the P / S conversion unit 17 is directly supplied to the E / O conversion unit 28 without using the bit multiplexing unit 18, and the optical signal is supplied. To the optical signal transmission cable through the optical connector 29, and
The serial data DS2 from the / S conversion unit 24 is directly supplied to the E / O conversion unit 30 to be converted into an optical signal, which is then led to the optical signal transmission cable through the optical connector 31. Serial data DS1 from 17
And serial data DS2 from the P / S converter 24,
It is also possible to transmit each through individual optical signal transmission cables.

FIG. 4 shows an example of a receiver for receiving the optical signal OS sent from the example shown in FIG.

In the example of the receiving apparatus shown in FIG. 4, the optical signal OS transmitted through the optical signal transmission cable 27 is guided to the photoelectric conversion section (O / E conversion section) 34 through the optical connector 33. . In the O / E converter 34, an optical signal OS having a center wavelength of approximately 1.3 μm is subjected to photoelectric conversion processing, and the bit transmission rate is 2.97 Gbps.
And the multiplexed serial data DSM having a bit transmission rate of 2.97 Gbps based on the optical signal OS having a center wavelength of approximately 1.3 μm is reproduced. Then, the reproduced multiplexed serial data DSM is supplied to the bit separation unit 35.

The bit separation section 35 is composed of, for example, a 1: 2 demultiplexer. The 1: 2 demultiplexer basically includes at least one input terminal and a pair of output terminals, and the input serial data is supplied to the input terminal. The function of allocating to the output terminals, thereby deriving, to the pair of output terminals, two output serial data each having a bit transmission rate of 1/2 of the bit transmission rate of the input serial data. It is said that

In the bit separation section 35, O
1 from the multiple serial data DSM from the / E converter 34
Bits are sequentially taken out, and an operation for forming a group of two bits every other bit is performed to perform multiplexed serial data D.
Bit separation processing is performed on the SM. As a result, in the bit demultiplexing unit 35, every other bit of the multiplexed serial data DSM is sequentially connected, and the serial data DS1 having a bit transmission rate of 2.97 / 2 = 1.485 Gbps and the multiplexed serial data DS1. Every other bit of the DSM is sequentially connected to form serial data DS2 having a bit transmission rate of 2.97 / 2 = 1.485 Gbps, and one of a pair of output ends of the bit separation unit 35. In the state where the serial data DS1 is obtained and the serial data DS2 is obtained in the other, or the serial data DS2 is obtained at one of the pair of output ends of the bit separation unit 35 and the serial data DS1 is obtained at the other. It

Such serial data DS1 and DS
2 indicates that one of them is the multiplexed serial data DS
The synchronous word data DWS1 inserted on the transmitting side for transmitting the optical signal OS based on M is accompanied by a portion made into serial data, and the other of them outputs the optical signal OS based on the multiplexed serial data DSM. This means that the sync word data DWS2 inserted on the sending side for sending out has a portion that is made into serial data.

Then, the serial data DS1 or DS2 obtained at one of the pair of output terminals in the bit separation section 35 is converted into a pair of 2: 1 multiplexer sections 36 and 37.
Of the serial data DS2 supplied to the other of the pair of output terminals of the bit separation unit 35.
Alternatively, DS1 is a pair of 2: 1 multiplexer units 36.
And 37 respectively. The 2: 1 multiplexer unit 36 is also supplied with the selection control signal SS1 from the sync word detection / control signal transmission unit 38, and the 2: 1 multiplexer unit 37 is also supplied with the sync word detection / control signal transmission unit 3.
The selection control signal SS2 from 8 is also supplied.

Each of the 2: 1 multiplexer units 36 and 37 basically has at least a pair of input terminals, one output terminal and one control terminal, and a control signal supplied to the control terminal. Depending on the situation, the function of deriving either of the two input data supplied to the pair of input terminals as output data at the output terminal. Therefore, depending on the control signal supplied to the control terminal, output data obtained by time-divisionally multiplexing two input data supplied to the pair of input terminals is obtained at the output terminal.

In this case, the control signal is set to selectively take a high level H and a low level L, for example, so that when the control signal takes a high level H, a pair of input data is output as output data. When the input data supplied to one of the ends is obtained, and when the control signal has the low level L, the input data supplied to the other of the pair of input ends is obtained as the output data. To be done.

In the 2: 1 multiplexer unit 36,
Depending on the status of the selection control signal SS1, the bit separation unit 35
When one of the serial data DS1 and DS2 is selected and derived, for example, when the serial data DS1 is selectively derived, the state is maintained by the selection control signal SS1, and when the serial data DS2 is selectively derived. The selection control signal SS1 switches the state in which the serial data DS2 is selectively derived from the state in which the serial data DS1 is selectively derived. On the other hand, in the 2: 1 multiplexer unit 37, the other of the serial data DS1 and DS2 from the bit separation unit 35 is selectively derived in accordance with the status of the selection control signal SS2, for example, the serial data DS2 is selected. When it is derived, the state is maintained by the selection control signal SS2, and when the serial data DS1 is selectively derived, from the state in which the serial data DS1 is selectively derived by the selection control signal SS2.
Are switched to a state where they are selectively derived.

Serial data DS1 (or serial data DS2) having a bit transmission rate of 1.485 Gbps obtained from the 2: 1 multiplexer unit 36 is supplied to the parallel data forming / synchronization word separating unit 39.
At the same time, the serial data DS2 (or serial data DS1) obtained from the 2: 1 multiplexer unit 37 and having a bit transmission rate of 1.485 Gbps is
It is supplied to the parallel data forming / synchronization word separating unit 40.

Parallel data formation / synchronization word separation unit 3
In 9, serial data DS1 (or serial data DS2) from the 2: 1 multiplexer unit 36
Are supplied to the S / P conversion unit 41. S / P converter 41
In this case, the serial data DS1 (or serial data DS2) is subjected to S / P conversion so that the serial data DS1 (or serial data DS2) has a word transmission rate of 1,485 / 20 = 74.25 MBps. It is converted into 20-bit word string data DZ1 (20) (or composite 20-bit word string data DZ2 (20)). Then, the composite 20-bit word string data DZ1 (20) obtained based on the serial data DS1
Are formed with the synchronous word data DWS1, and the composite 20-bit word string data DZ2 (20) obtained based on the serial data DS2 is formed with the synchronous word data DWS2.

Similarly, in the parallel data forming / synchronization word separating section 40, the serial data DS2 (or the serial data D from the 2: 1 multiplexer section 37 is received.
S1) is supplied to the S / P conversion unit 42. In the S / P conversion unit 42, the serial data DS2 (or the serial data DS1) is S / P-converted to obtain the serial data DS2 (or the serial data DS1) and the word transmission rate is 1,485 / 20 = 74.25MBp
Composite 20-bit word string data DZ2 (20)
(Or composite 20-bit word string data DZ1 (2
0)). Then, the composite 20-bit word string data DZ2 obtained based on the serial data DS2
(20) is formed with the synchronous word data DWS2, and is also the composite 20-bit word string data DZ1 (20) obtained based on the serial data DS1.
Are formed with the sync word data DWS1.

Composite 20-bit word string data DZ1 (20) (or composite 20) obtained from the S / P converter 41.
Bit word string data DZ2 (20)) and S / P
The composite 20-bit word string data DZ2 (20) (or the composite 20-bit word string data DZ1 (20)) obtained from the conversion unit 42 is supplied to the synchronous word detection / control signal transmission unit 38. In the sync word detection / control signal transmission unit 38, the composite 2 obtained from the S / P conversion unit 41 is used.
Detection of the sync word data DWS1 (or sync word data DWS2) inserted in the 0 bit word string data DZ1 (20) (or the composite 20 bit word string data DZ2 (20)) and S / P
Regarding the composite 20-bit word string data DZ2 (20) (or the composite 20-bit word string data DZ1 (20)) obtained from the conversion unit 42, the synchronous word data DWS2 (or the synchronous word data DW) inserted into it.
S1) is detected.

Further, the synchronization word detection / control signal transmission section 3
8 is a selection control signal SS for the 2: 1 multiplexer unit 36.
1 and the selection control signal SS2 is supplied to the 2: 1 multiplexer unit 37. At this time, the selection control signal S2 is supplied.
One of S1 and the selection control signal SS2 has a high level H
And take the low level L to the other.

Then, the synchronization word detection / control signal transmission unit 38 obtains the composite 20-bit word string data DZ1 (20) from the S / P conversion unit 41 and outputs the synchronization word data DW.
When S1 is detected and the composite 20-bit word string data DZ2 (20) is obtained from the S / P conversion unit 42 to detect the synchronous word data DWS2, the selection control supplied to the 2: 1 multiplexer unit 36. The signal SS1 is maintained at the level at that time, for example, the high level H or the low level L, and the selection control signal SS2 supplied to the 2: 1 multiplexer unit 37 is also at the level at that time: the low level L, for example. Alternatively, the high level H is maintained. As a result, the 2: 1 multiplexer unit 36 maintains the state of deriving the serial data DS1 and the 2: 1 multiplexer unit 37 maintains the state of deriving the serial data DS2. As a result, the composite 20-bit word string data DZ1 (20) is obtained from the S / P converter 41, and the S / P converter 4
The state in which the composite 20-bit word string data DZ2 (20) is obtained from 2 is maintained.

Further, the synchronization word detection / control signal transmission unit 3
8, the composite 20-bit word string data DZ2 (20) is obtained from the S / P converter 41, and the synchronous word data DWS
2 is detected, and the composite 2 is detected from the S / P converter 42.
When the 0-bit word string data DZ1 (20) is obtained and the synchronous word data DWS1 is detected, the selection control signal SS1 supplied to the 2: 1 multiplexer unit 36 is changed to the level at that time, for example, the high level H or Low level L is changed, for example, low level L or high level H
2: 1 multiplexer unit 3
It is assumed that the selection control signal SS2 supplied to 7 is changed to the level at that time, for example, the low level L or the high level H, and takes the high level H or the low level L, for example. As a result, in the 2: 1 multiplexer unit 36,
By switching from the state of deriving the serial data DS2 to the state of deriving the serial data DS1, the state of deriving the serial data DS1 is maintained, and the 2: 1 multiplexer unit 37 is provided with the serial data D.
By switching from the state of deriving S1 to the state of deriving serial data DS2, the serial data DS2
The state of deriving is maintained.

By performing the control operation by the synchronous word detection / control signal transmission unit 38 as described above, the composite 20-bit word string data DZ1 (2
0) is obtained and the composite 20 is obtained from the S / P converter 42.
The state in which the bit word string data DZ2 (20) is obtained is set to a stable state, and the composite 20-bit word string data DZ2 (20) is obtained from the S / P conversion unit 41 and S /
From the P conversion unit 42, the composite 20-bit word string data DZ1
When the condition for obtaining (20) is taken, immediately
Composite 20-bit word string data D from the S / P converter 41
Z1 (20) is obtained, and the S / P conversion unit 42 is switched to a state in which the composite 20-bit word string data DZ2 (20) is obtained.

Parallel data forming / synchronization word separation unit 3
9, the composite 20-bit word string data DZ1 (20) from the S / P converter 41 is converted into the 10B / 8B converter 43.
Is supplied to. In the 10B / 8B conversion unit 43, the 20 bits forming each word in the composite 20-bit word string data DZ1 (20) are divided into 10 bits, and each of the divided 10 bits is divided in advance. According to the prepared conversion table, 10B / 8B conversion for sequentially converting into 8-bit data is performed, and based on the composite 20-bit word string data DZ1 (20), a composite 16-bit with a word transmission rate of 74.25 MBps Word string data DX1 (16) is formed.

The composite 16-bit word string data DX1 (16) obtained from the 10B / 8B converter 43 is supplied to the word data separator 44. Word data separation unit 44
In this case, the composite 16-bit word string data DX1 (1
From 6), the sync word data DWS1 is separated, and the separated sync word data DWS1 and the Y data series DY which forms 12-bit, 14-bit or 16-bit word string data having a word transmission rate of 74.25 MBps.
V and V are sent as output data of the parallel data forming / synchronization word separating unit 39, and the Y data series DYV is supplied to the data restoring unit 45.

In the parallel data forming / synchronization word separating section 40, the composite 20-bit word string data DZ2 (20) from the S / P converting section 42 is supplied to the 10B / 8B converting section 46. In the 10B / 8B conversion unit 46, the composite 20-bit word string data DZ2 (20)
The 20 bits forming each word in that are divided into 10 bits, and each of the divided 10 bits is subjected to 10B / 8B conversion which is sequentially converted into 8-bit data according to a conversion table prepared in advance. And composite 20
Composite 16-bit word string data DX2 (16) having a word transmission rate of 74.25 MBps is formed based on the bit word string data DZ2 (20).

The composite 16-bit word string data DX2 (16) obtained from the 10B / 8B converter 46 is supplied to the word data separator 47. Word data separation unit 47
In this case, the composite 16-bit word string data DX2 (1
From 6), the sync word data DWS2 is separated, and the separated sync word data DWS2 and a C _B / C _R data sequence forming 12-bit, 14-bit or 16-bit word string data with a word transmission rate of 74.25 MBps. DCV and DCV are sent as output data of the parallel data forming / synchronization word separating unit 40, and the C _B / C _R data series DCV is supplied to the data restoring unit 45.

In the data restoration unit 45, the Y data series DYV and the C _B / C _R data series DCV are multiplexed in parallel to form 24-bit, 28-bit or 32-bit word string data as a whole, The transmission rate is 74.
4: 2: 2 format D-Cinem with 25 MBps
The digital data DCNN forming the a signal is reproduced.

In the example shown in FIG. 1, the serial data DS1 from the P / S converter 17 is directly supplied to the E / O converter 28 without using the bit multiplexer 18 and converted into an optical signal. The data is converted and led to the optical signal transmission cable through the optical connector 29, and the serial data DS2 from the P / S conversion unit 24 is directly converted to the E / O conversion unit 3.
0, converts it into an optical signal, and outputs it to the optical connector 31.
Through the optical signal transmission cable through the serial data DS1 from the P / S converter 17 and the P / S converter 2
In the case of transmitting the serial data DS2 from 4 respectively via individual optical signal transmission cables, the configuration shown by the broken line in FIG. 4 is adopted.

That is, in the example shown in FIG. 1, the optical signal guided to the optical signal transmission cable through the optical connector 29 is received through the optical connector 48, and the O / E converter 49 is received.
At the same time, the serial data DS1 is obtained and supplied to the S / P conversion section 41 in the parallel data forming / synchronization word separating section 39, and the optical signal guided to the optical signal transmission cable through the optical connector 31 is transferred to the optical connector 50.
The serial data DS2 is obtained by the O / E conversion unit 51 and is supplied to the S / P conversion unit 42 in the parallel data forming / synchronization word separating unit 40.

FIG. 5 shows the claims in the present application in which an example of the data transmission method according to the invention described in any one of claims 6 to 10 in the claims in the present application is implemented. An example of a data transmission device according to the invention described in any one of items 20 to 23 will be shown.

In the example shown in FIG. 5, digital data DHDP forming an HD signal of 4: 4: 4 format for interlaced scanning is supplied to the data processing unit 60.

The digital data DHDP supplied to the data processing unit 60 has a word transmission rate of 74.25 MB.
R data sequence forming 10-bit word string data at ps and word transmission rate at 74.25 MBps 1
A G data series forming 0-bit word string data and a B data series forming 10-bit word string data having a word transmission rate of 74.25 MBps are parallel to each other with their respective timing reference code data SAV and EAV aligned. Multiplexed, overall word transmission rate is 74.2
It is assumed to form 30-bit word string data of 5 MBps.

As shown in FIG. 6, the data processing unit 60 sets the word transmission rate to 74.25 MBps 30.
Digital data DHDP forming bit word string data
Form a word transmission rate of 74.25 MB each
The R data series DR, the G data series DG, and the B data series DB, which form 10-bit word string data of ps, are separated from each other.

The 10 bits R0 to R9 forming each word data of the R data series DR and the G data series D
The lower 5 bits G0 to G4 of the 10 bits G0 to G9 forming each word data of G are compared with the data conversion unit 6
Supply to 1. The data converter 61 converts the supplied 10 bits R0 to R9 and 5 bits G0 to G4 into 15-bit word data. As a result, the data conversion unit 6
From 1, the 15-bit word string data DP1 (15) having a word transmission rate of 74.25 MBps is obtained as converted digital data and is output from the data processing unit 60.

In addition, 10 bits B0 to B9 forming each word data of the B data series DB and the G data series DG
The upper 5 bits G5 to G9 of the 10 bits R0 to R9 forming each word data of
Supply to. The data converter 62 converts the supplied 10 bits B0 to B9 and 5 bits G5 to G9 into 15-bit word data. As a result, 15-bit word string data DP2 (15) having a word transmission rate of 74.25 MBps is obtained as converted digital data and is output from the data processing unit 60.

In this way, the 15-bit word string data DP1 (15) and 15 obtained from the data processing unit 60.
The bit word string data DP2 (15) is supplied to the data selection and extraction unit 13 in the synchronization word insertion / serial data formation unit 11 and the data selection and extraction unit 20 in the synchronization word insertion / serial data formation unit 12, respectively.

15-bit word string data DP1 (15)
Is supplied to the data selection and extraction unit 13 through 15 of the 16 input terminals provided at the input end of the data selection and extraction unit 13, and for the remaining one of the 16 input terminals, "Low" or "high"
Fixed to. As a result, the 15-bit word string data DP1 (15) is apparently converted to 16-bit word string data. Also, the 15-bit word string data DP2 (1
The supply of 5) to the data selection and extraction section 20 is also performed through 15 of the 16 input terminals provided at the input end of the data selection and extraction section 20, and for the remaining one of the 16 input terminals. Is "low" or "high"
It is fixed to h ″. As a result, the 15-bit word string data DP2 (15) is apparently made into 16-bit word string data.

Other parts in the example shown in FIG. 5 are configured similarly to the example shown in FIG. 1 and operate in the same manner as the example shown in FIG. Therefore, in FIG. 5, the portions corresponding to the respective portions in the example shown in FIG. 1 are denoted by the same reference numerals as those in FIG. 1, and the duplicate description is omitted.

FIG. 7 shows an example of a receiver for receiving the optical signal OS sent from the example shown in FIG.

The example of the receiving apparatus shown in FIG. 7 is configured similarly to the example shown in FIG. Therefore, in FIG. 7, parts corresponding to the respective parts in the example shown in FIG. 4 are denoted by the same reference numerals as those in FIG.

Then, in the example shown in FIG. 7, from the word data separating section 44, the synchronous word data DWS1
And the word transmission rate is set to 74.25 MBps 15
The bit word string data DP1 (15) is sent as output data of the parallel data forming / synchronization word separating unit 39, and the 15 bit word string data DP1 (15) is supplied to the data restoring unit 45. Also, from the word data separation unit 47, the synchronization word data DWS2 and the 15-bit word string data DP2 (15) having a word transmission rate of 74.25 MBps are sent as output data of the parallel data formation / synchronization word separation unit 40. Then, the 15-bit word string data DP2 (15) is converted into the data restoration unit 45.
Is supplied to.

Then, in the data restoration unit 45, 15
Based on the bit word string data DP1 (15) and the 15 bit word string data DP2 (15), the digital data DHDP forming the 4: 4: 4 format HD signal for interlaced scanning is restored.

FIG. 8 is a diagram showing the scope of claims of the present application in which an example of the data transmission method according to the invention described in any one of claims 11 to 15 is implemented. An example of a data transmission device according to the invention described in any one of claims 24 to 27 is shown.

In the example shown in FIG. 8, digital data DCNP forming a 4: 4: 4 format D-Cinema signal having a quantization bit number of 12, 14, or 16 bits is supplied to the data processing unit 70. Supplied.

The digital data DCNP supplied to the data processing unit 70 has a word transmission rate of 74.25 MB.
R data series forming 12-bit, 14-bit or 16-bit word string data set to ps, G data series forming 12-bit, 14-bit or 16-bit word string data set to word transmission rate of 74.25 MBps, and word transmission 12 with rate of 74.25 MBps
A B data sequence forming bit, 14-bit or 16-bit word string data is parallel-multiplexed with the respective timing reference code data SAV and EAV aligned, and the word transmission rate as a whole is 74.25 MBps.
36-bit, 42-bit or 48-bit word string data.

The data processing unit 70 forms digital data DCNP which forms 36-bit, 42-bit or 48-bit word string data having a word transmission rate of 74.25 MBps. The word transmission rate is 74.25 M.
R data series DRV that forms 12-bit, 14-bit, or 16-bit word string data that is Bps, and 12-bit, 1 that sets the word transmission rate to 74.25 MBps
G data sequence DGV that forms 4-bit or 16-bit word string data and word transmission rate is 74.25MB
The B data series DBV forming 12-bit, 14-bit, or 16-bit word string data set to ps is mutually separated. R data series D obtained from the data processing unit 70
RV, G data series DGV and B data series DBV are
Synchronous word insertion / serial data forming units 71 and 7 respectively
2 and 73.

The sync word insertion / serial data forming section 71 to which the R data series DRV is supplied is also supplied with the horizontal sync pulse signal SH of the D-Cinema signal formed by the digital data DCNP. Then, in the synchronization word insertion / serial data formation unit 71, the R data series DRV is supplied to the data selection extraction unit 75. Sixteen parallel input terminals are provided at the input end for the R data series DRV in the data selection and extraction unit 75. When the R data series DRV is 16-bit word string data, the R data series DRV is input through all 16 parallel input terminals. On the other hand, R
When the data series DRV is 12-bit or 14-bit word string data, the R data series D is transmitted through 12 or 14 of 16 parallel input terminals.
RV is input, and the remaining four or two are fixed to “low” or “high”. As a result, the R data series DRV is apparently converted into 16-bit word string data.

The data selection and extraction section 75 has a word transmission rate of 74.25 from the synchronous word data transmission section 76.
The synchronous word data DWS1 of MBps is also supplied. The synchronization word data DWS1 is composed of a plurality of 16-bit word data having a preset code.

Further, in the sync word insertion / serial data forming unit 71, the horizontal sync pulse signal SH having a frequency of 74.25 MHz is supplied to the control signal forming unit 77. The control signal forming unit 77 uses the horizontal sync pulse signal S.
A control signal CSW1 and a control signal CDS1 that are in synchronization with H are formed, and the control signal CSW1 is sent to the synchronization word data sending unit 7
6 and the control signal CDS1 to the data selection / extraction section 75.

As a result, the synchronization word data transmission unit 76
Is the synchronous word data DWS according to the control signal CSW1.
1 is sent, and it is supplied to the data selection and extraction section 75. When the control signal CDS1 is supplied, the data selection extraction unit 75 extracts the synchronization word data DWS1 from the synchronization word data transmission unit 76 accordingly, and otherwise, the R data series DRV remains unchanged. Select and retrieve data. Thereby,
The data selection extraction unit 75, in the horizontal blanking period portion in each line portion of the R data series DRV, according to the control signal CDS1, outputs the synchronization word data transmission unit 76.
The process of inserting the sync word data DWS1 from

In a specific example of the process of inserting the synchronization word data DWS1 into the R data series DRV in the data selection / extraction section 75, as shown in A of FIG. 9, the synchronization word data DWS1 is R Data series DRV
Of the timing reference code data EAV, the line number data, the error detection code data, and the auxiliary data arranged in the horizontal blanking period portion of each line period portion, immediately before the timing reference code data SAV. Is inserted. That is, the synchronization word data DWS1
Is the timing reference code data S in the horizontal blanking period portion in each line period portion of the R data series DRV.
It is inserted just before the AV.

The timing at which the synchronization word data DWS1 is inserted into the R data series DRV is the control signal C.
It is set by SW1 and the control signal CDS1. As a result, the synchronous word data DWS is output from the data selection / extraction unit 75 to the horizontal blanking period portion in each line period portion.
The R data series DRV in which 1 is inserted is derived as composite 16-bit word string data DX1 (16) having a word transmission rate of 74.25 MBps.

The composite 16-bit word string data DX1 (16) derived from the data selection extracting unit 76 is 8B / 1.
It is supplied to the 0B converter 78. 8B / 10B conversion unit 78
In this case, the composite 16-bit word string data DX1 (1
8B / 10B conversion is performed on 6) to form composite 20-bit word string data DZ1 (20) based on the composite 16-bit word string data DX1 (16) with a word transmission rate of 74.25 MBps.

The composite 20-bit word string data DZ1 (20) formed in the 8B / 10B converter 78 is P
It is supplied to the / S converter 79. In the P / S conversion unit 79, the composite 20-bit word string data DZ1 (20) is subjected to P / S conversion to obtain the composite 20-bit word string data D.
The bit transmission rate based on Z1 (20) is 74.25.
Serial data DS with × 20 = 1.485 Gbps
1, the serial data DS1 is sent as output data of the synchronization word insertion / serial data forming unit 71, and is supplied to the bit multiplexing unit 80.

The sync word insertion / serial data forming unit 72 to which the G data series DGV is supplied is also supplied with the horizontal sync pulse signal SH of the D-Cinema signal formed by the digital data DCNP. Then, in the synchronization word insertion / serial data formation unit 72, the G data series DGV is supplied to the data selection extraction unit 81.
16 parallel input terminals are also provided at the input end for the G data series DGV in the data selection and extraction section 81. When the G data series DGV is 16-bit word string data, the G data series DGV is input through all 16 parallel input terminals. On the other hand, when the G data series DGV is 12-bit or 14-bit word string data, the G data series DGV is input through 12 or 14 of 16 parallel input terminals and the remaining 4 About one or two, it is fixed to "low" or "high". As a result, the G data series DGV appears to be 16
It is used as bit word string data.

The data selection and extraction section 81 receives the word transmission rate from the synchronous word data transmission section 82 as 74.25.
Synchronous word data DWS2 of MBps is also supplied. The sync word data DWS2 is composed of a plurality of 16-bit word data having a preset code, and the sync word insertion / serial data forming unit 71 is provided.
Is different from the synchronous word data DWS1 sent from the synchronous word data sending unit 76 in FIG.

Further, in the sync word insertion / serial data forming section 72, the horizontal sync pulse signal SH having a frequency of 74.25 MHz is supplied to the control signal forming section 83. The control signal forming unit 83 uses the horizontal sync pulse signal S.
A control signal CSW2 and a control signal CDS2 that are synchronized with H are formed, and the control signal CSW2 is sent to the synchronous word data sending unit 8
2 and the control signal CDS2 to the data selection / extraction unit 81.

As a result, the synchronization word data transmission section 82
Is the synchronous word data DWS according to the control signal CSW2.
2 is sent and is supplied to the data selection and extraction unit 81. When the control signal CDS2 is supplied, the data selection extraction unit 81 extracts the synchronization word data DWS2 from the synchronization word data transmission unit 82 accordingly, and otherwise, the G data series DGV remains unchanged. Select and retrieve data. Thereby,
The data selection extraction unit 81, in the horizontal blanking period portion in each line portion of the G data series DGV, according to the control signal CDS2, the synchronization word data transmission unit 82.
The process of inserting the synchronous word data DWS2 from

In a specific example of the process of inserting the synchronization word data DWS2 into the G data series DGV in the data selection and extraction section 81, as shown in FIG. 9B, the synchronization word data DWS2 is G Data series DGV
Of the timing reference code data EAV, the line number data, the error detection code data, and the auxiliary data arranged in the horizontal blanking period portion of each line period portion, immediately before the timing reference code data SAV. Is inserted. That is, the synchronization word data DWS2
Is the timing reference code data S in the horizontal blanking period portion in each line period portion of the G data series DGV.
It is inserted just before the AV.

The timing at which the synchronization word data DWS2 is inserted into the G data series DGV is the control signal C.
It is set by SW2 and the control signal CDS2. As a result, the synchronous word data DWS is transferred from the data selection / extraction unit 81 to the horizontal blanking period portion in each line period portion.
The G data sequence DGV in which 2 is inserted is derived as composite 16-bit word string data DX2 (16) having a word transmission rate of 74.25 MBps.

The composite 16-bit word string data DX2 (16) derived from the data selection extracting unit 81 is 8B / 1.
It is supplied to the 0B conversion unit 84. 8B / 10B conversion unit 84
In this case, the composite 16-bit word string data DX2 (1
6) is subjected to 8B / 10B conversion to form composite 20-bit word string data DZ2 (20) based on the composite 16-bit word string data DX2 (16) and having a word transmission rate of 74.25 MBps.

The composite 20-bit word string data DZ2 (20) formed in the 8B / 10B converter 84 is P
It is supplied to the / S converter 85. In the P / S conversion unit 85, the composite 20-bit word string data DZ2 (20) is subjected to P / S conversion to generate the composite 20-bit word string data D.
Based on Z2 (20), the bit transmission rate is 74.25.
Serial data DS with × 20 = 1.485 Gbps
2, the serial data DS2 is sent as output data of the sync word insertion / serial data forming unit 72, and is supplied to the bit multiplexing unit 80.

Further, the sync word insertion / serial data forming unit 73 to which the B data series DBV is supplied is also supplied with the horizontal sync pulse signal SH of the D-Cinema signal formed by the digital data DCNP. Then, in the synchronization word insertion / serial data forming unit 73, B
The data series DBV is supplied to the data selection and extraction section 86. B data series DBV in the data selection and extraction unit 86
The parallel input terminal is also provided with 16 parallel input terminals. When the B data series DBV is 16-bit word string data, the B data series DBV is input through all 16 parallel input terminals. On the other hand, the B data series DBV has 12 bits or 14 bits.
In the case of bit word string data, the B data series DBV is input through 12 or 14 of 16 parallel input terminals, and the remaining 4 or 2 are “low” or “high”. Is fixed to " As a result, the B data series DBV is apparently 1
It is 6-bit word string data.

The word selection rate from the synchronous word data transmission section 87 to the data selection and extraction section 86 is 74.25.
The synchronous word data DWS3 of MBps is also supplied. The sync word data DWS3 is composed of a plurality of 16-bit word data having a preset code, and the sync word insertion / serial data forming unit 71 is provided.
Of the synchronous word data DWS1 transmitted from the synchronous word data transmitting unit 76 and the synchronous word data DWS2 transmitted from the synchronous word data transmitting unit 82 of the synchronous word inserting / serial data forming unit 72. It

Further, in the sync word insertion / serial data forming section 73, the horizontal sync pulse signal SH having a frequency of 74.25 MHz is supplied to the control signal forming section 88. The control signal forming unit 88 uses the horizontal sync pulse signal S.
A control signal CSW3 and a control signal CDS3 that are synchronized with H are formed, and the control signal CSW3 is transmitted to the synchronous word data sending unit 8
7 as well as the control signal CDS3 to the data selection / extraction section 86.

As a result, the synchronization word data transmission unit 87
Is the synchronous word data DWS according to the control signal CSW3.
3 and sends it to the data selection and extraction unit 86. When the control signal CDS3 is supplied, the data selection extraction unit 86 extracts the synchronization word data DWS3 from the synchronization word data transmission unit 87 in response thereto, and otherwise, the B data series DBV remains unchanged. Select and retrieve data. Thereby,
The data selection extraction unit 86 outputs the synchronization word data transmission unit 87 to the B data series DBV in the horizontal blanking period portion in each line portion in accordance with the control signal CDS3.
The process of inserting the sync word data DWS3 from

In a specific example of the process of inserting the synchronization word data DWS3 into the B data series DBV in the data selection and extraction unit 86, as shown in C of FIG. 9, the synchronization word data DWS3 is B Data series DBV
Of the timing reference code data EAV, the line number data, the error detection code data, and the auxiliary data arranged in the horizontal blanking period portion of each line period portion, immediately before the timing reference code data SAV. Is inserted. That is, the synchronization word data DWS3
Is the timing reference code data S in the horizontal blanking period portion in each line period portion of the B data series DBV.
It is inserted just before the AV.

The timing at which the synchronization word data DWS3 is inserted into the B data series DBV is the control signal C.
It is set by SW3 and control signal CDS3. As a result, the synchronous word data DWS is output from the data selection / extraction unit 86 to the horizontal blanking period portion in each line period portion.
The B data sequence DBV in which 3 is inserted is derived as composite 16-bit word string data DX3 (16) having a word transmission rate of 74.25 MBps.

The composite 16-bit word string data DX3 (16) derived from the data selection / extraction unit 86 is 8B / 1.
It is supplied to the 0B conversion unit 89. 8B / 10B conversion unit 89
In this case, the composite 16-bit word string data DX3 (1
8B / 10B conversion is applied to 6) to form composite 20-bit word string data DZ3 (20) based on the composite 16-bit word string data DX3 (16) with a word transmission rate of 74.25 MBps.

The composite 20-bit word string data DZ3 (20) formed in the 8B / 10B converter 89 is P
It is supplied to the / S conversion unit 90. In the P / S conversion unit 90, the composite 20-bit word string data DZ3 (20) is subjected to P / S conversion to obtain the composite 20-bit word string data D.
The bit transmission rate is 74.25 based on Z3 (20).
Serial data DS with × 20 = 1.485 Gbps
3, the serial data DS3 is sent as output data of the sync word insertion / serial data forming unit 73, and is supplied to the bit multiplexing unit 80.

In the bit multiplexer 80, the serial data DS1 from the P / S converter 79 and the P / S converter 85 are provided.
From the serial data DS2 from the P / S converter 90 and the serial data DS3 from the P / S conversion unit 90 are sequentially taken out and arranged in order to perform bit multiplex combining processing on the serial data DS1, the serial data DS2, and the serial data DS3. And the bit transmission rate is 1.48.
Multiple serial data DSM with 5 Gbps × 4 = 5.94 Gbps is formed. In this way, the multiplexed serial data DSM obtained from the bit multiplexing unit 80 is E /
It is supplied to the O conversion unit 91.

In the E / O converter 91, the multiple serial data DSM is subjected to the E / O conversion process, and the center wavelength based on the multiple serial data DSM is set to, for example, about 1.3 μm.
The optical signal OS with m is the bit transmission rate 5.94G
It is formed as bps, and it is sent out as a transmission signal. The optical signal OS, which is a transmission signal sent from the E / O conversion unit 91, is guided to the optical signal transmission cable 93 through the optical connector 92 and transmitted to the reception side through the optical signal transmission cable 93. The optical signal transmission cable 93 is
For example, it is formed by using quartz-based SMF.

As shown by the broken line in FIG. 8, the serial data DS1 from the P / S converter 79 is directly supplied to the E / O converter 95 without using the bit multiplexer 80, and an optical signal is supplied. To the optical signal transmission cable through the optical connector 96, and the serial data DS2 from the P / S converter 85 is directly converted to E / O.
The data is supplied to the conversion unit 97 to be converted into an optical signal, which is guided to the optical signal transmission cable through the optical connector 98, and the serial data DS from the P / S conversion unit 90 is supplied.
3 is supplied to the E / O converter 99 as it is, converted into an optical signal, and led to the optical signal transmission cable through the optical connector 100, so that the serial data DS1, P1 from the P / S converter 79 is transmitted. The serial data DS2 from the / S converter 85 and the serial data DS3 from the P / S converter 90 can also be transmitted through individual optical signal transmission cables.

FIG. 10 shows an example of a receiver for receiving the optical signal OS sent from the example shown in FIG.

In the example of the receiving apparatus shown in FIG. 10, the optical signal OS transmitted through the optical signal transmission cable 93 is the O / E converter 102 through the optical connector 101.
Be led to. In the O / E converter 102, an optical signal OS having a center wavelength of about 1.3 μm is subjected to photoelectric conversion processing so that the bit transmission rate is 5.94 Gbps and the center wavelength is about 1.3 μm. The multiplexed serial data DSM having a bit transmission rate of 5.94 Gbps based on the signal OS is reproduced. Then, the reproduced multiplexed serial data DSM is supplied to the bit separation unit 103.

The bit separation section 103 is composed of, for example, a 1: 4 demultiplexer. The 1: 4 demultiplexer basically has at least one input end and four output ends, and the input serial data is supplied to the input end. A function for distributing to four output terminals, and thereby deriving, to each of the four output terminals, four output serial data each having a bit transmission rate of ¼ of the bit transmission rate of the input serial data. Will be fulfilled.

In the bit separation section 103,
From the multiplexed serial data DSM from the O / E conversion unit 102, one bit is sequentially taken out and an operation of forming a group of four every three bits is performed to perform a bit separation process on the multiplexed serial data DSM. As a result, in the bit demultiplexing unit 103, each of the multiplexed serial data D
Every third bit of SM is serially connected,
Bit transmission rate is 5.94 / 4 = 1.485 Gbps
Serial data DSA, DSB, DSC and DS
D is formed, and serial data DSA, DSB, DSC and D are respectively provided at the four output terminals of the bit separation unit 103.
SD is obtained.

Then, serial data DSA and DS obtained at the four output terminals of the bit separation unit 103 are obtained.
Each of B, DSC and DSD is supplied to each of three 4: 1 multiplexer sections 104, 105 and 106. The selection control signal SS1 from the synchronous word detection / control signal transmission unit 107 is also supplied to the 4: 1 multiplexer unit 104, and the 4: 1 multiplexer unit 105 also receives the selection control signal SS1.
The selection control signal SS2 is also supplied from the synchronization word detection / control signal transmission unit 107, and the synchronization word detection / control signal transmission unit 107 is further supplied to the 4: 1 multiplexer unit 106.
The selection control signal SS3 from is also supplied.

Such a 4: 1 multiplexer unit 10
Each of 4, 105 and 106 basically comprises at least four input terminals, one output terminal and one control terminal, and four of them are provided depending on the situation of the control signal supplied to the control terminal. One of the four input data supplied to the input end of
It fulfills the function of deriving as output data at the output end. Therefore, depending on the control signal supplied to the control end, output data obtained by time-divisionally multiplexing the four input data supplied to the four input ends can be obtained at the output end.

In each of the 4: 1 multiplexer units 104, 105 and 106, based on the serial data DSA to DSD from the bit separation unit 103, the serial data DS having a bit transmission rate of 1.485 Gbps.
1, DS2 or DS3 is selectively derived. And
The 4: 1 multiplexer unit 104 uses the serial data DS
When 1 is selectively derived, the state is maintained by the selection control signal SS1, and the serial data DS2
Alternatively, when DS3 is selected and derived, the serial data DS2 or DS is selected by the selection control signal SS1.
The state in which 3 is selectively derived is switched to the state in which serial data DS1 is selectively derived. When the serial data DS2 is selectively derived, the 4: 1 multiplexer unit 105 maintains the state by the selection control signal SS2, and the serial data DS3 or D3.
When S1 is selectively derived, the selection control signal SS2 switches the state in which the serial data DS3 or DS1 is selectively derived to the state in which the serial data DS2 is selectively derived. Further, the 4: 1 multiplexer unit 106 maintains its state by the selection control signal SS3 when the serial data DS3 is selected and derived, and by the selection control signal SS3 when the serial data DS1 or DS2 is selectively derived. ,
The state in which the serial data DS1 or DS2 is selectively derived is switched to the state in which the serial data DS3 is selectively derived.

Serial data DS1 (or serial data DS2 or DS3) having a bit transmission rate of 1.485 Gbps obtained from the 4: 1 multiplexer unit 104 is supplied to the parallel data forming / synchronization word separating unit 108 and is supplied to the 4: 1 unit. The serial data DS2 (or the serial data DS3 that sets the bit transmission rate obtained from the multiplexer unit 105 to 1.485 Gbps).
Alternatively, DS1) is supplied to the parallel data forming / synchronization word separating unit 109, and the 4: 1 multiplexer unit 10
The bit transmission rate obtained from 6 is 1.485 Gbps
The serial data DS3 (or serial data DS1 or DS2) is supplied to the parallel data forming / synchronization word separation unit 110.

Parallel data formation / synchronization word separation unit 1
08, the serial data DS1 (or serial data DS2 from the 4: 1 multiplexer unit 104)
Alternatively, DS3) is supplied to the S / P conversion unit 111. In the S / P converter 111, the serial data D
S1 (or serial data DS2 or DS3)
S / P conversion is performed on the serial data DS1 (or serial data DS2 or DS3), and the composite 20-bit word string data DZ1 (20) (or the composite data that makes the word transmission rate 1485/20 = 74.25 MBps) It is converted to 20-bit word string data DZ2 (20) or DZ3 (20). Serial data DS
20-bit word string data DZ1 obtained based on 1
(20) is formed with the synchronous word data DWS1, and 20-bit word string data DZ2 (20) obtained based on the serial data DS2 is formed with the synchronous word data DWS2. The 20-bit word string data DZ3 (20) obtained based on the serial data DS3 is formed as accompanying the synchronous word data DWS3.

Similarly, in the parallel data forming / synchronization word separating unit 109, the 4: 1 multiplexer unit 10
Serial data DS2 (or serial data DS3 or DS1) from 5 is supplied to the S / P conversion unit 112. In the S / P converter 112, serial data DS2 (or serial data DS3 or D
S1) is converted to serial data DS2
(Or serial data DS3 or DS1)
Word transmission rate is 1,485 / 20 = 74.25MB
composite 20-bit word string data DZ2 (2
0) (or composite 20-bit word string data DZ3
(20) or DZ1 (20)). The 20-bit word string data DZ2 (20) obtained based on the serial data DS2 is formed as accompanying the synchronous word data DWS2, and the 20-bit word string data DZ3 (20) obtained based on the serial data DS3.
Is formed with the sync word data DWS3, and the 20-bit word string data DZ1 (20) obtained based on the serial data DS1 is formed with the sync word data DWS1.

Further, in the parallel data forming / synchronization word separating unit 110, the 4: 1 multiplexer unit 10
The serial data DS3 (or serial data DS1 or DS2) from 6 is supplied to the S / P conversion unit 113. In the S / P converter 113, serial data DS3 (or serial data DS1 or D
S / P conversion is applied to S2) and serial data DS3
(Or serial data DS1 or DS2)
Word transmission rate is 1,485 / 20 = 74.25MB
composite 20-bit word string data DZ3 (2
0) (or composite 20-bit word string data DZ1
(20) or DZ2 (20)). The 20-bit word string data DZ3 (20) obtained based on the serial data DS3 is formed along with the synchronization word data DWS3, and the 20-bit word string data DZ1 (20) obtained based on the serial data DS1.
Is formed with the sync word data DWS1, and the 20-bit word string data DZ2 (20) obtained based on the serial data DS2 is formed with the sync word data DWS2.

Compound 20 obtained from S / P converter 111
Bit word string data DZ1 (20) (or composite 2
0-bit word string data DZ2 (20) or DZ3
(20)), the composite 20 obtained from the S / P converter 112
Bit word string data DZ2 (20) (or composite 2
0-bit word string data DZ3 (20) or DZ1
(20)) and the composite 20-bit word string data DZ3 (20) (or the composite 20-bit word string data DZ1 (20) or DZ2 (20)) obtained from the S / P conversion unit 113 are used for detecting the sync word. It is supplied to the control signal transmission unit 107.

In the sync word detection / control signal transmission unit 107, the composite 20-bit word string data DZ1 (20) (or the composite 20) obtained from the S / P conversion unit 111 is used.
Bit word string data DZ2 (20) or DZ3
(20)), the synchronous word data DWS1 (or the synchronous word data DWS2 or DWS3) inserted therein is detected, and the composite 20-bit word string data DZ2 (20) (or the composite 20) obtained from the S / P conversion unit 112 is detected. Regarding the bit word string data DZ3 (20) or DZ1 (20), the synchronous word data DWS2 (or the synchronous word data D) inserted into it.
WS3 or DWS1) detection, and composite 20-bit word string data DZ obtained from the S / P converter 113
3 (20) (or composite 20-bit word string data D
The sync word data DWS3 (or sync word data DWS1 or DWS2) inserted into Z1 (20) or DZ2 (20) is detected.

Further, the synchronization word detection / control signal transmission section 1
Reference numeral 07 supplies the selection control signal SS1 to the 4: 1 multiplexer 104, the selection control signal SS2 to the 4: 1 multiplexer 105, and the selection control signal SS3 to the 4: 1 multiplexer 106.

Then, the synchronous word detecting / control signal transmitting section 107 receives the composite 20-bit word string data DZ1 (20) from the S / P converting section 111 to detect the synchronous word data DWS1, and the S / P converting section. 112 to composite 20
When the bit word string data DZ2 (20) is obtained and the synchronous word data DWS2 is detected, and the composite 20 bit word string data DZ3 (20) is obtained from the S / P conversion unit 113 and the synchronous word data DWS3 is detected. 4:
1 Selector control signal S supplied to the multiplexer unit 104
S1 is to maintain the state at that time, and
It is assumed that the selection control signal SS2 supplied to the 4: 1 multiplexer unit 105 and the selection control signal SS3 supplied to the 4: 1 multiplexer unit 106 also maintain the state at that time. As a result, the 4: 1 multiplexer unit 104
To maintain the state in which the serial data DS1 is derived,
The serial data DS is input to the 4: 1 multiplexer unit 105.
The state of deriving 2 is maintained, and the 4: 1 multiplexer unit 106 is maintained of the state of deriving serial data DS3. As a result, the composite 20-bit word string data DZ1 (20) is obtained from the S / P converter 111, and the composite 20-bit word string data DZ2 is obtained from the S / P converter 112.
(20) is obtained, and the state in which the composite 20-bit word string data DZ3 (20) is obtained from the S / P conversion unit 113 is maintained.

Also, the synchronization word detection / control signal transmission section 1
07 is the composite 20-bit word string data DZ2 (20) or DZ3 (20) obtained from the S / P converter 111 to detect the synchronous word data DWS2 or DWS3, and the S / P converter 112 outputs the composite 20-bit word. The column data DZ3 (20) or DZ1 (20) is obtained, the synchronous word data DWS3 or DWS1 is detected, and the composite 20-bit word column data DZ1 (20) or DZ2 (20) is obtained from the S / P conversion unit 113. When the synchronous word data DWS1 or DWS2 is detected, the selection control signal SS1 supplied to the 4: 1 multiplexer unit 104, the selection control signal SS2 supplied to the 4: 1 multiplexer unit 105, and the 4: 1 multiplexer unit For each of the selection control signals SS3 supplied to 106, To change the state. Thereby,
The serial data DS is input to the 4: 1 multiplexer 104.
Serial data D from the state of deriving 2 or DS3
By switching to the state of deriving S1, the state of deriving the serial data DS1 is maintained, and the 4: 1 multiplexer unit 105 is caused to output the serial data DS3 or D3.
By switching from the state of deriving S1 to the state of deriving serial data DS2, the serial data DS2
4: 1 multiplexer unit 1
06 is caused to switch from the state of deriving the serial data DS1 or DS2 to the state of deriving the serial data DS3, and the state of deriving the serial data DS3 is maintained.

By performing the control operation by the synchronous word detection / control signal transmission unit 107 as described above, the S / P
From the conversion unit 111, the composite 20-bit word string data DZ1
(20) is obtained, the composite 20-bit word string data DZ2 is obtained from the S / P converter 112, and the composite 20-bit word string data DZ3 is obtained from the S / P converter 113.
The state in which (20) is obtained is set to a stable state, and the composite 20-bit word string data DZ2 (2
0) or DZ3 (20) is obtained, and the S / P conversion unit 1
12 to composite 20-bit word string data DZ3 (20)
Alternatively, DZ1 (20) is obtained, and the S / P conversion unit 113
When the composite 20-bit word string data DZ1 (20) or DZ2 (20) is obtained from S, the composite 20-bit word string data DZ1 (20) is immediately obtained from the S / P conversion unit 111. / P converter 1
12 to composite 20-bit word string data DZ2 (20)
And the composite 20-bit word string data DZ3 (20) is obtained from the S / P converter 113.

Parallel data forming / synchronization word separation unit 1
At 08, the composite 20-bit word string data DZ1 (20) from the S / P conversion unit 111 is supplied to the 10B / 8B conversion unit 115. In the 10B / 8B conversion unit 115, the composite 20-bit word string data DZ1 (20) is subjected to 10B / 8B conversion, and the word transmission rate based on the composite 20-bit word string data DZ1 (20) is set to 7
Composite 16-bit word string data DX1 (16) with 4.25 MBps is formed.

The composite 16-bit word string data DX1 (16) obtained from the 10B / 8B converter 115 is supplied to the word data separator 116. In the word data separation unit 116, the composite 16-bit word string data DX
1 (16) is separated from the synchronous word data DWS1,
The separated sync word data DWS1 and the R data series DRV forming 12-bit, 14-bit or 16-bit word string data having a word transmission rate of 74.25 MBps are output data of the parallel data forming / sync word separating unit 108. R data series DRV
Is supplied to the data restoration unit 117.

In the parallel data formation / synchronization word separation unit 109, the composite 2 from the S / P conversion unit 112 is also used.
0-bit word string data DZ2 (20) is 10B / 8B
It is supplied to the conversion unit 118. 10B / 8B conversion unit 118
In this case, the composite 20-bit word string data DZ2 (2
0) is subjected to 10B / 8B conversion to form composite 16-bit word string data DX2 (16) based on the composite 20-bit word string data DZ2 (20) having a word transmission rate of 74.25 MBps.

The composite 16-bit word string data DX2 (16) obtained from the 10B / 8B converter 118 is supplied to the word data separator 119. In the word data separation unit 119, the composite 16-bit word string data DX
The sync word data DWS2 is separated from 2 (16),
The separated sync word data DWS2 and the G data series DGV forming 12-bit, 14-bit or 16-bit word string data having a word transmission rate of 74.25 MBps are output data of the parallel data forming / sync word separating unit 109. As a G data series DGV
Is supplied to the data restoration unit 117.

Further, in the parallel data forming / synchronization word separating section 110, the composite 20-bit word string data DZ3 (20) from the S / P converting section 113 is 10B / 8.
It is supplied to the B conversion unit 120. 10B / 8B converter 12
If 0, the composite 20-bit word string data DZ3
10B / 8B conversion is performed on (20) to form composite 16-bit word string data DX3 (16) based on the composite 20-bit word string data DZ3 (20) with a word transmission rate of 74.25 MBps.

The composite 16-bit word string data DX3 (16) obtained from the 10B / 8B converter 120 is supplied to the word data separator 121. In the word data separation unit 121, the composite 16-bit word string data DX
3 (16), the sync word data DWS3 is separated,
The separated sync word data DWS3 and the B data series DBV forming 12-bit, 14-bit or 16-bit word string data having a word transmission rate of 74.25 MBps are output data of the parallel data forming / sync word separating unit 110. Sent as B data series DBV
Is supplied to the data restoration unit 117.

In the data restoration section 117, the R data series DRV, the G data series DGV, and the B data series DBV.
Digital data that forms a 4: 4: 4 format D-Cinema signal with a word transmission rate of 74.25 MBps by parallel multiplexing and with each other to form 36-bit, 42-bit or 48-bit word string data. DC
Play the NP.

In the example shown in FIG. 8, the serial data DS1 from the P / S converter 79 is directly supplied to the E / O converter 95 and converted into an optical signal without using the bit multiplexer 80. Then, it is led to the optical signal transmission cable through the optical connector 96, and the serial data DS2 from the P / S converter 85 is directly supplied to the E / O converter 97 to be converted into an optical signal, which is then converted into an optical signal. It is led to the optical signal transmission cable through the connector 98, and further, the P / S converter 9
The serial data DS3 from 0 is directly supplied to the E / O converter 99 and converted into an optical signal, which is then converted into an optical connector 1
00 to the optical signal transmission cable, P /
Serial data DS from the S converters 79, 85 and 90
When 1, DS2 and DS3 are respectively transmitted through individual optical signal transmission cables, the configuration shown by the broken line in FIG. 10 is adopted.

That is, in the example shown in FIG. 8, the optical signal guided to the optical signal transmission cable through the optical connector 96 is received through the optical connector 122, and the O / E converter 1 is received.
23, serial data DS1 is obtained, and the serial data DS1 is sent to S /
The optical signal supplied to the P conversion unit 111 and guided to the optical signal transmission cable through the optical connector 98 in the example shown in FIG. 8 is received through the optical connector 124, and the O / E conversion unit 125 obtains the serial data DS2. And supplies it to the S / P converter 112 in the parallel data forming / synchronization word demultiplexing unit 109, and the optical signal guided to the optical signal transmission cable through the optical connector 100 in the example shown in FIG. The serial data DS3 is received by the O / E conversion unit 127 through the connector 126.
Then, it is supplied to the S / P conversion unit 113 in the parallel data formation / synchronization word separation unit 110.

[0176]

As is apparent from the above description, the features of the present invention are
Any of claims 1 to 5 within the scope of the claim
A data transmission method according to the invention described therein, or
Is any one of claims 16 to 19.
In the data transmission device according to the invention, each
First and second combined work transmitted as aldata
At the receiving side, the sync word data is
Data is Y data series and C _B/ C_RPlay data series
Properly as the synchronization data required for processing
It is supposed to be detected. Also, the first and the first
Word string data included in each of the 2 composite word string data
Data is supposed to be obtained through 8B / 10B conversion.
Will result in good transmission quality. It
Therefore, on the receiving side, good transmission quality can be obtained.
And the received first and second composite word sequence data
Y data series and C based_B/ C_RReplay of data series
To ensure that the data synchronization status required for
The state of being maintained is secured.

[0177] The data transmission method according to the invention described in any one of claims 1 to 5 in the claims of the present application, or claims 16 to 16 in the claims of the present application. According to the data transmission device according to the invention described in any one of 19 to 8, 8B / 10B conversion is performed on the first and second composite word sequence data in which the synchronization word data is inserted, and the first obtained thereby. And first and second composite word sequence data
To serial data, transmitting the first and second serial data, receiving the first and second serial data on the receiving side, and receiving the received first and second serial data. The conversion into the first and second composite word string data and the like can be performed by using, for example, an integrated circuit device used for transmitting and receiving digital data under the fiber channel system.

The frame rate is set to 24 Hz, 25
Hz or 30 Hz, the number of lines in each frame is 1125, the number of effective lines in each frame is 1080, and the sampling frequency is 74.25M.
Hz, 192 valid data samples on each line
It is set to 0 samples, the number of quantization bits is 12 bits,
Since the digital video signal data including the Y data series and the C _B / C _R data series, which is 14 bits or 16 bits, is to be transmitted, 8B / 10B conversion is performed based on the digital data to be transmitted. Is performed, and word string data including sync word data to which a predetermined code is assigned is formed, and the word string data is converted into serial data and sent out for transmission. Depending on the transmission method, serial transmission can be performed for digital data or the like forming a 4: 2: 2 format D-Cinema signal in which the number of quantization bits exceeds 10.

Further, the data transmission method according to the invention described in any one of claims 6 to 10 in the scope of claims of the present application or any one of claims 20 to 23. In the data transmission device according to the present invention, each of the first and second composite word sequence data transmitted as serial data is such that the synchronization word data is R data sequence, G data on the receiving side. It is supposed that the synchronization data is properly detected as the synchronization data required for the processing for reproducing the data sequence and the B data sequence. The word string data included in each of the first and second compound word string data is 8B / 10B.
By being obtained through the conversion, good transmission quality is brought about. Therefore, on the receiving side, the reproduction of the R data sequence, G data sequence, and B data sequence based on the received first and second composite word sequence data is performed while obtaining good transmission quality. The state in which the data synchronization state required for the processing is reliably obtained is ensured.

[0180] The data transmission method according to the invention described in any one of claims 6 to 10 in the claims of the present application, or claims 20 to 20 in the claims of the present application. According to the data transmission device according to the invention described in any one of items 23 to 23, the 8B / 10B conversion is performed on the first and second composite word sequence data in which the synchronization word data is inserted, and the first obtained thereby. And conversion of the second composite word string data into first and second serial data, transmission of the first and second serial data, and further the first on the receiving side.
And the reception of the second serial data, the conversion of the received first and second serial data into the first and second composite word sequence data, etc. This can be done using integrated circuit devices used for transmission and reception.

The field rate is 60 Hz, the frame rate is 30 Hz, the number of lines in each frame is set to 1125, and the number of quantization bits is 1.
Since digital video signal data of 0 bit, which includes R data series, G data series, and B data series, is to be transmitted, 8B / 10B conversion is performed based on the digital data to be transmitted. At the same time, a word sequence data is formed that includes synchronization word data to which a predetermined code is assigned, and the word sequence data is converted into serial data and transmitted to be transmitted. It is possible to perform serial transmission of digital data or the like forming an HD signal of 4: 4: 4 format for interlaced scanning.

Further, the data transmission method according to the invention described in any one of claims 11 to 15 in the claims of the present application or any one of claims 24 to 27 is described. In the data transmission device according to the invention, each of the first, second and third composite word string data transmitted as serial data is such that the synchronization word data is the R data on the receiving side. It is supposed that the sync data is properly detected as the synchronization data required for the processing for reproducing the series, the G data series, and the B data series. Also, the first, second and third
Since the word string data included in each of the composite word string data of 1 is obtained through 8B / 10B conversion, good transmission quality is brought about. Therefore, on the receiving side, R data series, G data series, and B data series based on the received first, second, and third composite word string data are obtained under the condition that good transmission quality is obtained. The state in which the data synchronization state required for the processing for reproduction of is surely obtained is secured.

[0183] The data transmission method according to the invention described in any one of claims 11 to 15 in the claims of the present application, or claims 24 to 24 in the claims of the present application. According to the data transmission device of the invention described in any one of Nos. 27 to 27, the first, second and third data in which the synchronization word data is inserted respectively.
8B / 10B conversion of the composite word string data of, the conversion of the first, second and third composite word string data obtained thereby into the first, second and third serial data, and the first and second Transmission of the second and third serial data, and further reception of the first, second and third serial data at the receiving side, first and second of the received first, second and third serial data. The conversion into the second and third composite word string data can be performed using, for example, an integrated circuit device used for transmitting and receiving digital data under the fiber channel system.

The frame rate is set to 24 Hz, 25
Hz or 30 Hz, the number of lines in each frame is 1125, the number of effective lines in each frame is 1080, and the sampling frequency is 74.25M.
Hz, 192 valid data samples on each line
It is set to 0 samples, the number of quantization bits is 12 bits,
Since the digital video signal data including the R data series, the G data series, and the B data series, which is 14 bits or 16 bits, is targeted for transmission, 8B / 10B conversion is performed based on the digital data to be transmitted. Is performed, and word string data including sync word data to which a predetermined code is assigned is formed, and the word string data is converted into serial data and sent out for transmission. With the transmission method,
The number of quantization bits exceeds 10 bits 4:
It becomes possible to perform serial transmission of digital data or the like forming a 4: 4 format D-Cinema signal.

[Brief description of drawings]

FIG. 1 is a diagram illustrating an example of a data transmission method according to the invention described in any one of claims 1 to 5 in the claims of the present application; It is a block connection diagram which shows an example of the data transmission apparatus based on the invention as described in any one of Claims 19-27.

FIG. 2 is a conceptual diagram provided for explaining an example of data formed by a data processing unit in the example shown in FIG.

FIG. 3 is a conceptual diagram provided for explaining an example of data formed by a data processing unit in the example shown in FIG. 1.

FIG. 4 is a block connection diagram showing an example of a receiving device that receives an optical signal transmitted from the example shown in FIG.

FIG. 5 From claim 20 in the claims of the present application, wherein an example of the data transmission method according to the invention described in any one of claims 6 to 10 in the claims of the present application is implemented. It is a block connection diagram which shows an example of the data transmission apparatus which concerns on any one of Claim 23 to the invention.

FIG. 6 is a conceptual diagram provided for explaining the operation of the data processing unit in the example shown in FIG.

7 is a block connection diagram showing an example of a receiving device that receives an optical signal transmitted from the example shown in FIG.

FIG. 8 Claims 24 to 24 in the claims of the present application, in which an example of the data transmission method according to the invention described in any one of claims 11 to 15 in the claims of the present application is implemented. FIG. 28 is a block connection diagram showing an example of a data transmission device according to the invention described in any of items 27 to 27.

9 is a conceptual diagram provided for explaining an example of data formed by a data processing unit in the example shown in FIG.

FIG. 10 is a block connection diagram showing an example of a receiving apparatus that receives the optical signal sent from the example shown in FIG.

FIG. 11 is a conceptual diagram provided for explaining a “frame” used in transmission of digital data.

FIG. 12 is a conceptual diagram provided for explaining sync word data used in transmission of digital data.

FIG. 13 is a conceptual diagram provided for explaining an example of a data format of an interlaced scanning HD signal.

FIG. 14 is a conceptual diagram provided for explaining an example of a data format of an interlaced scanning HD signal.

FIG. 15 is a conceptual diagram provided for explaining an example of a data format of a progressive HD signal.

FIG. 16 is a conceptual diagram provided for explaining an example of a data format of a progressive HD signal.

FIG. 17 is a conceptual diagram provided for explaining an example of a data format of a progressive HD signal.

[Explanation of symbols]

10, 60, 70 ... Data processing unit, 11, 12,
71 to 73 ... Synchronous word insertion / serial data forming unit, 13, 20, 75, 81, 86 ... Data selection extracting unit, 14, 21, 76, 82, 87 ... Synchronous word data transmitting unit, 15, 22, 77, 83, 88
..Control signal forming unit, 16, 23, 78, 84, 89
... 8B / 10B converter, 17, 24, 79, 8
5, 90 ... P / S converter, 18, 80 ... Bit multiplexer, 25, 28, 30, 91, 95, 97, 9
9 ... E / O converter, 26, 29, 31, 33, 4
8, 50, 92, 96, 98, 100, 101, 12
2,124,126 ... Optical connector, 27,93
..Optical signal transmission cables, 34, 49, 51, 10
2, 123, 125, 127 ... O / E converter, 3
5, 103 ... Bit separation unit, 36, 37 ...
2: 1 multiplexer unit, 38, 107 ... Synchronous word detection / control signal transmission unit, 39, 40, 108-1
10 ... Parallel data forming / synchronization word separation unit,
41, 42, 111-113 ... S / P converter, 4
3,46,115,118,120 ... 10B / 8B
Converter, 44, 47, 116, 119, 121 ...
Word data separation unit, 45, 117 ... Data restoration unit, 61, 62 ... Data conversion unit, 104/10
6: 4: 1 multiplexer

[Procedure amendment]

[Submission date] August 30, 2001 (2001.8.3)
0)

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] 0023

[Correction method] Change

[Correction content]

Digital data forming a progressive HD signal having a frame rate of 60 Hz is S of the United States.
MPTE (Society of Motion Picture and Television)
Engineers: Association of Film and Television Engineers): Standards established by SMPTE 274 M,
For example, the data format is as shown in FIGS. 15, 16 and 17. FIG. 15 shows 4:
Progressive H in 2: 2 format or 4: 4: 4 format
One frame of the D signal is shown, and FIG. 16 shows 4 :.
FIG. 17 shows one line of a progressive HD signal of 2: 2 format, and FIG. 17 shows one line of a progressive HD signal of 4: 4: 4 format.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Name of item to be corrected] 0024

[Correction method] Change

[Correction content]

The SMP shown in FIGS. 15, 16 and 17
In the data format conforming to the TE 274 M, the frame rate: other 60 Hz, the total number of lines in each frame: 1125 lines, the number of effective lines per frame: 1080 lines, the effective number of data samples per line: 1920 samples, Sampling frequency: 14
8.5MHz or 148.5 / 1.001MHz
(In the present application, any of these is 148.5 MH
z), the number of quantization bits: 8 bits, 10 bits, etc. are determined. And, in case of 4: 2: 2 format, the parallel data interface is 8 bits ×
2 = 16 bits or 10 bits × 2 = 20 bits, and in the case of the 4: 4: 4 format, 8 bits × 3 = 24 bits or 10 bits × 3 = 30 bits.

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0028

[Correction method] Change

[Correction content]

The D-Cinema signal can be said to be, for example, a progressive digital video signal having a frame rate of 24 Hz or 24 / 1.001 Hz (in the present application, both of them are referred to as 24 Hz). -The frame rate of the Cinema signal is not limited to 24 Hz, but 25 Hz, 30
Hz and the like are also possible. Frame rate 24Hz, 25
For digital data forming digital video signals of Hz and 30 Hz, the data format is S
Frame rate standardized by MPTE 274 M:
In addition to 24 Hz, 25 Hz and 30 Hz, the number of effective data samples per line: 1920 samples, the number of effective lines per frame: 1080 lines, sampling frequency: 74.25 MHz, the number of quantization bits: 8 bits or 10 bits, etc. ing. And if the parallel data interface is in 4: 2: 2 format,
8 bits x 2 = 16 bits or 10 bits x 2 = 2
0 bit, and in case of 4: 4: 4 format, 8 bits x 3
= 24 bits or 10 bits × 3 = 30 bits.

[Procedure amendment 4]

[Document name to be amended] Statement

[Name of item to be corrected] 0029

[Correction method] Change

[Correction content]

Under these circumstances, regarding the digital data forming the D-Cinema signal, for example, in order to further improve the resolution of an image reproduced based on the digital data, the quantization bit number is set to 8 bits or It has been desired that the number of bits exceeds 10 bits, for example, 12 bits, 14 bits, 16 bits, or the like. However, in the standard relating to the digital data forming the current digital video signal including the above-mentioned SMPTE 274 M, etc., the standardization of the number of quantization bits of 8 bits or 10 bits has been made. , The number of quantization bits is 8 bits or more than 10 bits, for example, 12 bits, 14 bits,
There is no standardization for 16 bits or the like.

[Procedure Amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0076

[Correction method] Change

[Correction content]

Under the circumstances, the synchronization word data sending unit 2
1, and is supplied to the data selection and extraction unit 20,
One example of the synchronous word data DWS2 having a word transmission rate of 74.25 MBps is 8B / 10.
When the B conversion is performed, 8-bit word data that becomes 10-bit word data with a code name of K 28.5 , and when the 8B / 10B conversion is performed are D5.6.
10-bit word data called by the code name
16-bit word data formed by superimposing the following 8-bit word data, and K when 8B / 10B conversion is performed
10-bit word codenamed 23.7
Two pieces of 8-bit word data, which is the
The 16-bit word data is formed in succession.

[Procedure correction 6]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 3

[Correction method] Change

[Correction content]

[Figure 3]

─────────────────────────────────────────────────── ─── Continued Front Page (51) Int.Cl. ⁷ Identification Code FI Theme Coat (Reference) H04N 11/24

Claims (27)

[Claims] 1. The frame rate is 24 Hz, 25 Hz or 30 Hz, and the number of lines in each frame is 11.
25 lines, the number of effective lines in each frame is 108
0 line, sampling frequency is 74.25 MHz, the number of effective data samples in each line is set to 1920 samples, and the number of quantization bits is 12 bits, 14 bits or 16 bits, and a luminance signal data sequence and a color difference signal data sequence. From the digital data forming the digital video signal, the luminance signal data series and the color difference signal data series are separated from each other, and a preset code is set in each of the luminance signal data series and the color difference signal data series. To form first and second composite word sequence data, and subject each of the first and second composite word sequence data to 8-bit / 10-bit conversion and then parallel / serial First conversion
And a data transmission method of obtaining second serial data and transmitting the first and second serial data for transmission. 2. A first and a second composite, by inserting sync word data having a preset code into each horizontal blanking period portion of a luminance signal data series and a color difference signal data series separated from each other. The data transmission method according to claim 1, wherein word string data is formed. 3. The sync word data having a preset code is inserted immediately before the timing reference code data in each horizontal blanking period portion of the luminance signal data series and the color difference signal data series separated from each other,
The data transmission method according to claim 2, wherein the first and second compound word string data are formed. 4. The first sync word data having a preset code is inserted into the luminance signal data series, and the preset code different from the first sync word data is inserted into the color difference signal data series. The data transmission method according to claim 1, wherein the second synchronization word data is inserted to form the first and second composite word string data. 5. The first and second serial data are converted to the first serial data.
2. The data transmission method according to claim 1, wherein the second serial data is sent out for transmission as multiplexed serial data formed by performing bit multiplexing processing on the second serial data. 6. The field rate is 60 Hz, the frame rate is 30 Hz, and the number of lines in each frame is 1.
From the digital data forming a digital video signal, which is set to 125 lines and has a quantization bit number of 10 bits, and which includes a red primary color signal data series, a green primary color signal data series, and a blue primary color signal data series, Data conversion is performed on the primary color signal data series, the green primary color signal data series, and the blue primary color signal data series to obtain a first data series and a second data series in which the numbers of quantization bits are equal to each other. Synchronous word data having a preset code is inserted into each of the data series and the second data series to form first and second composite word string data, and the first and second composite word string data are formed. 8 for each
A data transmission method in which parallel / serial conversion is performed after performing bit / 10 bit conversion to obtain first and second serial data, and the first and second serial data is transmitted to be transmitted. 7. Synchronized word data having a preset code is inserted into the respective horizontal blanking period portions of the first data series and the second data series to form first and second composite word strings. 7. The data transmission method according to claim 6, wherein data is formed. 8. A synchronization word data having a preset code is inserted immediately before the timing reference code data in each horizontal blanking period portion of the first data series and the second data series, and 8. The data transmission method according to claim 7, further comprising: forming second composite word string data. 9. Inserting first synchronization word data having a preset code into the first data series,
It is characterized in that second sync word data having a preset code different from the first sync word data is inserted into the second data series to form first and second composite word string data. The data transmission method according to claim 6. 10. The first and second serial data is sent out for transmission as multiplexed serial data formed by subjecting the first and second serial data to a bit multiplexing process. 6. The data transmission method described in 6. 11. The frame rate is set to 24 Hz, 25 Hz or 30 Hz, and the number of lines in each frame is 1.
125 lines, 10 effective lines in each frame
80 lines, sampling frequency is 74.25MHz,
The number of valid data samples in each line is set to 1920 samples, and includes a red primary color signal data series, a green primary color signal data series, and a blue primary color signal data series in which the number of quantization bits is 12 bits, 14 bits, or 16 bits. From the digital data forming the digital video signal, the red primary color signal data series, the green primary color signal data series, and the blue primary color signal data series are separated from each other to obtain the red primary color signal data series and the green primary color signal data series. And sync word data having a preset code is inserted into each of the blue primary color signal data series to form first, second and third composite word string data, and the first, second and third composite word string data are formed. After performing 8-bit / 10-bit conversion on each of the composite word string data and then performing parallel / serial conversion, Beauty obtain a third serial data, said first data transmission method for sending in order to transmit the second and third serial data. 12. Synchronous word data having a preset code is inserted into each horizontal blanking period portion of a red primary color signal data series, a green primary color signal data series and a blue primary color signal data series which are separated from each other. , First,
The data transmission method according to claim 11, wherein second and third compound word string data are formed. 13. A preset code is provided immediately before the timing reference code data in each horizontal blanking period portion of the red primary color signal data series, the green primary color signal data series and the blue primary color signal data series which are separated from each other. 13. The data transmission method according to claim 12, wherein sync word data is inserted to form first, second and third compound word string data. 14. A first sync word data having a preset code is inserted into a red primary color signal data series, and a preset code different from the first sync word data is inserted into the green primary color signal data series. The second synchronization word data which is included is inserted, and the first primary data is added to the blue primary color signal data series.
And third sync word data having a preset code different from each of the second sync word data to form first, second and third composite word string data. The data transmission method according to claim 11. 15. The first, second and third serial data are sent out for transmission as multiplexed serial data formed by subjecting the first, second and third serial data to a bit multiplexing process. The data transmission method according to claim 11, wherein: 16. The frame rate is set to 24 Hz, 25 Hz or 30 Hz, and the number of lines in each frame is 1.
125 lines, 10 effective lines in each frame
80 lines, sampling frequency is 74.25MHz,
The number of effective data samples in each line is set to 1920 samples, and a digital video signal including a luminance signal data sequence and a color difference signal data sequence is formed with a quantization bit number of 12, 14, or 16 bits. Data processing means for separating the luminance signal data series and the color difference signal data series from digital data, and synchronization word data having a code preset for each of the luminance signal data series and the color difference signal data series. First and second sync word insertion means for inserting the first and second composite word string data to form first and second composite word string data, and 8 bit / 10 bit conversion is performed on each of the first and second compound word string data. After that, parallel / serial conversion is performed to obtain first and second serial data. A data forming means, and the data transmission device comprises a data transmission means, a sending order to transmit the first and second serial data obtained from the first and second serial data forming means. 17. The first and second synchronization word inserting means,
Synchronous word data having a preset code is inserted into each horizontal blanking period portion of the luminance signal data series and the color difference signal data series separated from each other to form first and second composite word string data. The data transmission device according to claim 16, wherein the data transmission device comprises: 18. The first synchronization word insertion means inserts first synchronization word data having a preset code into the luminance signal data series, and the second synchronization word insertion means includes the color difference signal data series. 17. The second sync word data having a preset code different from the first sync word data is inserted in to form the first and second composite word string data. The described data transmission device. 19. A data transmission means performs bit multiplexing processing on the first and second serial data of the first and second serial data obtained from the first and second serial data forming means, respectively. 17. The data transmission device according to claim 16, wherein the formed multiple serial data is sent out for transmission. 20. A red primary color signal data series and a green primary color signal data series in which the field rate is 60 Hz, the frame rate is 30 Hz, the number of lines in each frame is set to 1125, and the quantization bit number is 10 bits. From the digital data forming the digital video signal including the blue primary color signal data series, data conversion is performed on the red primary color signal data series, the green primary color signal data series and the blue primary color signal data series, and the quantization bit number is calculated. Data processing means for obtaining a first data series and a second data series that are equal to each other, and a preset code for each of the first data series and the second data series obtained from the data processing unit. First and second forming first and second composite word sequence data by inserting synchronization word data having And a parallel word / serial conversion after performing 8-bit / 10-bit conversion on each of the first and second composite word sequence data to obtain first and second serial data. And second serial data forming means, and data transmitting means for sending out the first and second serial data obtained from the first and second serial data forming means for transmission. Data transmission equipment. 21. First and second synchronization word insertion means,
First data series and second data obtained from the data processing means
21. The first and second composite word sequence data are formed by inserting synchronization word data having a preset code into each horizontal blanking period portion of the data sequence of FIG. Data transmission equipment. 22. The first sync word insertion means inserts the first sync word data having a preset code into the first data series obtained from the data processing means, and at the same time, inserts the second sync word data. Second means having a preset code different from the first synchronization word data in the second data series obtained from the data processing means.
21. The data transmission device according to claim 20, wherein the first and second composite word sequence data are formed by inserting the synchronization word data of 1. 23. Data transmission means performs bit multiplexing processing on the first and second serial data of the first and second serial data obtained from the first and second serial data forming means, respectively. 21. The data transmission device according to claim 20, wherein the formed multiple serial data is sent out for transmission. 24. The frame rate is set to 24 Hz, 25 Hz or 30 Hz, and the number of lines in each frame is 1.
125 lines, 10 effective lines in each frame
80 lines, sampling frequency is 74.25MHz,
The number of valid data samples in each line is set to 1920 samples, and includes a red primary color signal data series, a green primary color signal data series, and a blue primary color signal data series in which the number of quantization bits is 12 bits, 14 bits, or 16 bits. Data processing means for separating the red primary color signal data series, the green primary color signal data series, and the blue primary color signal data series from the digital data forming the digital video signal, and the red primary color signal data series, green Synchronizing word data having a preset code is inserted into each of the primary color signal data series and the blue primary color signal data series to form first, second and third composite word string data. 3 sync word insertion means and 8 bits for each of the first, second and third composite word sequence data First, second and third serial data forming means for obtaining first, second and third serial data by performing parallel / serial conversion after performing 10-bit conversion, and the first, second and third serial data forming means. And a data transmitting unit for transmitting the first, second and third serial data obtained from the third serial data forming unit. 25. Horizontal blanking periods of the red primary color signal data series, the green primary color signal data series, and the blue primary color signal data series obtained by the first, second, and third synchronization word inserting means from the data processing means. 25. The data transmission device according to claim 24, wherein synchronization word data having a preset code is inserted into the portion to form first, second and third composite word string data. 26. The first synchronization word insertion means inserts first synchronization word data having a preset code into the red primary color signal data series obtained from the data processing means, and second synchronization word insertion means. However, the second synchronization word data having a preset code different from the first synchronization word data is inserted into the green primary color signal data series obtained from the data processing means, and the third synchronization word insertion means is Inserting third synchronization word data having a preset code different from each of the first and second synchronization word data into the blue primary color signal data sequence obtained from the data processing means to generate the first and second 25. The data transmission device according to claim 24, wherein the second compound word string data is formed. 27. Data transmission means comprises first, second and third data transmission means.
1st and 2nd respectively obtained from the serial data forming means
25. The data according to claim 24, wherein the serial data and the third serial data are transmitted for transmission as multiplexed serial data formed by subjecting the first, second and third serial data to a bit multiplexing process. Transmission equipment.