JP2002320244A - Method of forming data and method, and apparatus for transmitting data - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable data, for forming a 720P signal in which the number of quantizing bits exceeds 10 bits to be formed, to obtain compatibility with data or the like for forming the 720P signal, in which the number of the quantizing bits is 8 bits or 10 bits. SOLUTION: A method for forming data comprises steps of setting a frame series in 1/60 s, forming each frame as a series of a 750-line part, setting the number of effective line parts in each frame to the 720-line part, setting the number of effective data samples in each line part to 1,280 samples, setting the number of quantization bits to 12, 14 or 16 bits based on the setting of the 1,280 samples, forming an inhibiting code for each effective line part all become as 12-, 14- or as 16-bit code of 00h or FFh in hexadecimal representation of the 8 bits of the more significant bits, and forming the digital data for forming the 720P signal.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The invention described in the claims of the present application has a feature that the number of effective lines in each frame is 72.
For forming digital data having a quantization bit number of 12, 14 or 16 bits, which represents video signal information which is set to 0 lines and the number of effective data samples in each line is set to 1280 samples. The data formation method, furthermore, the number of effective lines in each frame is set to 720 lines, and the number of effective data samples in each line is set to 1280 samples. The present invention relates to a data transmission method for serially transmitting digital data of 14 bits or 16 bits, and a data transmission apparatus used for carrying out the method.

[0002]

2. Description of the Related Art In the field of video signals, digitization has been attempted from the viewpoint of diversifying transmitted information and improving the quality of reproduced images. For example, digitalization is performed using digital data representing video signal information. High Definition Television (High Definiti)
on Television: HDTV) systems and the like have been proposed. A digital video signal (hereinafter, referred to as an HD digital video signal) under the HDTV system is formed, for example, according to a standard established by the Broadcasting Technology Association (BTA), and Y, P _B / P _R Format and G, B, R format. Y, if the P _B / P _R format, Y denotes a luminance signal, P _B and P _R denotes a color difference signal. Also,
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.

[0003] Y, HD digital picture signal of P _B / P _R format, frame rate 30Hz or 30/1.
001 Hz (in this application, any of these is 30H
called z. ), Each frame image is a signal for interlaced scanning that is formed by being divided into a first field image and a second field image, and follows a data format as shown in FIG. 14, for example. You. The data format shown in FIG. 14 includes a luminance signal data sequence (Y data sequence) representing luminance signal information in a video signal as shown in FIG.
Of as shown in the fourth B, become from the color difference signal data sequence representing the color difference signal information in the video signal (P _B / P _R data sequence), each of the Y data sequence and P _B / P _R data series Quantum The number of coded bits is 10 bits, so that each of the word data forming it has a 10-bit configuration, and the word transmission rate is, for example, 7 bits.
4.25 MBps. And in FIG. 14A,
Y is shown a portion of the video data unit in the line blanking section and the front and rear thereof in each line portion of the data series, also in the B of FIG. 14, in each line unit in the P _B / P _R data sequence The line blanking part and a part of the video data part before and after it are shown.

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

[0005] In the four words (3FF, 000,000,000,000, XYZ) indicated with (Y) or (C), the first three words (3FF, 000,000,000,000) are word-synchronous or line-synchronous. The last word (XYZ) is used to identify the first field and the second field in the same frame, or the timing reference code data: SAV and the timing reference code data: This is for discrimination from EAV (the same applies hereinafter).

[0006] G, B, and R format HD digital video signals are also signals for interlaced scanning at a frame rate of 30 Hz, and conform to, for example, a data format as shown in FIG. You. FIG.
The data format shown in FIG. 5 includes a green primary color signal data sequence (G data sequence) representing green primary color signal information in a video signal as shown in FIG.
5, a blue primary color signal data sequence (B data sequence) representing blue primary color signal information in the video signal, and a red color representing red primary color signal information in the video signal, as shown in FIG. 15C. And a primary color signal data sequence (R data sequence). Each of the G data sequence, B data sequence, and R data sequence has a quantization bit number of 10
Each of the word data forming the bits has a 10-bit configuration, and the word transmission rate is, for example, 74.25 MBps. 15A, 15B and 15C respectively show a G data series,
A line blanking part in each line part in the B data series and the R data series and a part of a video data part before and after the line blanking part are shown.

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

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

A program with a frame rate of 60 Hz
Digit forming a low-resolution HD digital video signal
Data is from SMPTE (Society of Motion Pi
cture and Television Engineers: Film and Television Engineers
Standards established by the Association of Engineers: SMPTE 247M
Standardization of the format is being attempted. Such SMPTE
 In the format standardized by 247M,
Frame rate: 60Hz plus effective data per line
Number of samples: 1920 samples, per frame
Effective lines: 1080 lines, sampling frequency: 1
48.5MHz or 148.5 / 1.001MHz
(In the present application, any of these is 148.5 MHz
That. ), Number of quantization bits: 8 bits or 10 bits
And so on. And the parallel data
Interface is Y, P_B/ P _R8-bit format
X 2 = 16 bits or 10 bits x 2 = 20 bits
8 bits × 3 = 24 for G, B, and R formats
Bits or 10 bits × 3 = 30 bits.

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

[0011] Incidentally, Y, if the P _B / P _R format, P _B data sequence and P _R data sequence of each of the sampling frequency is 1/2 of the sampling frequency of the Y data sequence. Is put below, if necessary, Y, and P _B / P _R format 4: 2: represented as 2 format. In the case of the G, B, and R formats, the sampling frequencies of the G data sequence, the B data sequence, and the R data sequence are the same. In the following, the G, B, and R formats are referred to as 4: 4: 4 formats as necessary.

Aside from the HD digital video signal, the frame rate is set to 60 Hz, the number of effective lines in each frame is set to 720 lines, and
A progressive digital video signal in which the number of valid data samples in each line is set to 1280 (in the present application, such a digital video signal is
20P signal) has been proposed. Such 72
The digital data forming the 0P signal has been standardized in format according to a standard established by SMPTE: SMPTE 296M. In the format standardized by such SMPTE 296M, the frame rate: 60H
z, number of effective lines per frame: 720 lines, number of effective data samples per line: 1280 samples, as well as the number of lines in each frame: 750 lines, sampling frequency: 74.25 MHz or 7
4.25 / 1.001 MHz (all of them are referred to as 74.25 MHz in the present application), the number of quantization bits: 8 bits or 10 bits, and the like. And the parallel data interface is Y,
For P _B / P _R format, 8 bits × a 2 = 16 bits or 10 bits × 2 = 20 bits, G, B, when the R form, 8 bits × 3 = 24 bits or 10 bits × 3 = 30 Is a bit.

The 720P signal has been proposed in the transition period to the HD digital video signal in the field of the digital video signal. Is 1080 lines and 1920 samples, but is 720 lines and 1280 samples, which is ＨＤ of the case of the HD digital video signal. Although it is inferior to a signal, it has a frame rate of 60 Hz, and is therefore suitable for use as a signal representing a fast-moving image.

[0014]

In such a situation,
For the digital data forming the 720P signal, for example, in order to further improve the resolution of an image reproduced based on the signal, the number of quantization bits is changed to a bit number exceeding the conventional 8 bits or 10 bits, for example, 12 bits. , 14 bits, 16 bits, and the like. However, the aforementioned SMPTE 269
In the current standard for digital data forming a 720P signal such as M, standardization is carried out for a quantization bit number of 8 bits or 10 bits, but a quantization bit number of 8 bits or 10 bits is used. Number of bits exceeding 10 bits, for example, 12 bits, 14 bits, 1
The standard of 6 bits is not standardized.
Therefore, the number of quantization bits is, for example, 12 bits, 1
Digital data forming a 720P signal of 4 bits or 16 bits may cause problems in terms of compatibility, versatility, and the like in the formation thereof.

[0015] In addition, digital data forming a 720P signal with a quantization bit number of, for example, 12, 14, or 16 bits has a problem associated with its transmission. That is, in transmitting digital data forming a 720P signal, serial transmission which is converted into serial data and transmitted is desired. At present, the number of quantization bits is set to 8 bits or 10 bits. : For digital data forming a 2: 2 format HD digital signal, HD SDI (High Definiti) based on BTA S-004, which is a standard established by the aforementioned BTA.
on Serial Digital Interface), it is only standardized to send other types of digital data,
For example, serial transmission of digital data forming a 720P signal whose quantization bit number exceeds 10 bits is not standardized. At present, the number of quantization bits is assumed to exceed 10 bits.
Serial transmission of digital data forming a 20P signal
A transmission system which can be appropriately realized using existing circuit components used for serial transmission of digital data forming a digital video signal having a predetermined number of quantization bits, for example, 10 bits. No specific example is found. Further, there is no document or the like describing a technique relating to such a serial transmission system.

In view of such a point, the invention described in the claims of the present application assumes that the number of quantization bits exceeds 10 bits and converts the digital data forming the 720P signal into the former quantization bit number of 8 bits. The present invention provides a data forming method capable of forming data compatible with digital data or the like forming a 720P signal having 10 bits or 10 bits, and further providing a 720P signal having a quantization bit number exceeding 10 bits. Is appropriately realized by utilizing existing circuit components used for serial transmission of digital data forming a digital video signal having a quantization bit number of 8 bits or 10 bits. To provide a data transmission method and a data transmission apparatus for use in the method.

[0017]

According to a first aspect of the present invention, there is provided a data forming method comprising the steps of:
Seconds or 1.001 / 60 seconds (in the present application, each of them is referred to as 1/60 second), and each frame is formed with a series of 750 line sections. With the number of effective lines set to 720 lines and the number of valid data samples in each line set to 1280 samples, the number of quantization bits is set to 12, 14, or 16 bits, and the number of quantization bits is set to 12, When the number of bits is 0, the prohibition code for each valid line portion is represented by 00h or FFh in hexadecimal notation (the subscript h is 1).
When it is assumed that all 12-bit codes are hexadecimal numbers and the quantization bit number is 14 bits,
When the prohibition code for each valid line portion is all 14-bit codes in which the upper 8 bits are 00h or FFh in hexadecimal notation and the number of quantization bits is 16 bits, the prohibition code for each valid line portion is higher. All 1s whose 8 bits are 00h or FFh in hexadecimal notation
As a 6-bit code, digital data forming a digital video signal is formed.

The data transmission method according to any one of the fifth to ninth aspects of the present invention provides a data transmission method in which the frame rate is 60 Hz, the number of lines in each frame is 750, and the number of lines in each frame is 750. , The number of effective lines is set to 720, the number of valid data samples in each line is set to 1280, and the digital data forming a digital video signal having a quantization bit number of 12, 14, or 16 bits is 12 bits, A process of dividing a 14-bit or 16-bit word into upper 10 bits and lower 2 bits, 4 bits or 6 bits is performed.
Word transmission rate based on 0 bits is 74.25 MBp
s, and second word string data having a word transmission rate based on the divided lower 2 bits, 4 bits, or 6 bits of 74.25 MBps, and the first and second word string data are formed. To obtain the first and second serial data based on the respective word string data, and transmit them for transmission.

Claim 10 in the claims of the present application
A data transmission method according to any one of claims 1 to 14, wherein the frame rate is 60 Hz, the number of lines in each frame is 750, the number of effective lines in each frame is 720, and the effective data in each line is The number of samples is set to 1280, and a process of dividing each 12-bit word into upper 10 bits and lower 2 bits is performed on digital data forming a digital video signal having a quantization bit number of 12 bits. A plurality of upper 10 bits are allocated to a first group and a second group, and a plurality of lower 2 bits obtained by division are multiplexed by a predetermined number and added to the second group, thereby forming data forming the first group. A first word string data having a word transmission rate of 74.25 MBps based on Forming second word string data having a word transmission rate of 74.25 MBps based on the data constituting the loop, and obtaining first and second serial data based on the first and second word string data, respectively; And transmit them for transmission.

In the data transmission apparatus according to the invention described in claim 15 of the present application, the frame rate is 60 Hz, the number of lines in each frame is 750, and the number of effective lines in each frame is 720. Line, the number of valid data samples in each line is set to 1280, and the number of quantization bits is set to 12
, Digital data forming a digital video signal of 14 bits or 16 bits, each having 12 bits,
A first word in which a process of dividing a 14-bit or 16-bit word into upper 10 bits and lower 2 bits, 4 bits, or 6 bits is performed and a word transmission rate based on the divided upper 10 bits is set to 74.25 MBps. The word transmission rate based on the column data and the divided lower 2 bits, 4 bits or 6 bits is 74.25M.
A data processing unit for forming second word string data of Bps; a first parallel / serial conversion unit for obtaining first serial data based on the first word string data obtained from the data processing unit; The second obtained from the processing unit
, A second parallel / serial converter for obtaining second serial data based on the word string data, and first and second converters obtained from the first and second parallel / serial converters, respectively.
And a data transmission unit for transmitting the serial data of the above.

Further, in the data transmission apparatus according to the invention described in claim 16 of the present application, the frame rate is 60 Hz, the number of lines in each frame is 750 lines, and the number of effective lines in each frame is 720 lines, the number of valid data samples in each line is set to 1280, and each 12-bit word is divided into upper 10 bits and lower 2 bits into digital data forming a digital video signal having a quantization bit number of 12 bits. A plurality of divided upper 10 bits are assigned to a first group and a second group, and the divided lower 2 bits are multiplexed by a predetermined number and added to the second group. 74. Set the word transmission rate based on the data constituting the first group to 74.
The word transmission rate based on the first word string data of 25 MBps and the data constituting the second group is 7
A data processing unit for forming second word string data at 4.25 MBps; a first parallel / serial conversion unit for obtaining first serial data based on the first word string data obtained from the data processing unit; A second parallel / serial converter for obtaining second serial data based on the second word string data obtained from the data processor, and first and second parallel / serial converters respectively obtained from the first and second parallel / serial converters. And a data transmission unit for transmitting the second serial data for transmission.

According to the data forming method according to any one of the first to fourth aspects of the present invention as described above, the number of quantization bits is one.
A 720P signal formed by digital data of 2, 14, or 16 bits is obtained. The digital data forming such a 720P signal is such that the prohibition code for each valid line section has the upper 8 bits set to one.
All 12-bit code, 14-bit code or 16-bit code represented as 00h or FFh in hexadecimal notation, so that a series of upper 8 bits or upper 10 bits of each 12-bit word, 14-bit word or 16-bit word The 8-bit word string data or 10-bit word string data formed by the above is compatible with the digital data forming the 720P signal having the conventional quantization bit number of 8 bits or 10 bits. Therefore, the digital data forming the 720P signal obtained by the data forming method according to any one of claims 1 to 4 in the claims of the present application has, for example, the conventional quantization bit number. It can be used for processing such as recording / reproduction, editing, and image reproduction using a device for digital data forming a 720P signal of 8 bits or 10 bits.

The data transmission method according to any one of claims 5 to 14 in the claims of the present application as described above, or claim 1
5 or the data transmission apparatus according to the invention described in claim 16, wherein digital data forming a 720P signal having a quantization bit number of 12, 14, or 16 bits is converted into a digital signal of a conventional quantization bit rate. The data is divided into a plurality of word string data which is compatible with digital data forming an HD digital video signal having a number of 8 bits or 10 bits, and each of the plurality of word string data is serialized. It is transmitted after being converted into data. Therefore, a data transmission method according to any one of claims 5 to 14 in the claims of the present application, or a data transmission device according to the invention described in claims 15 or 16 According to the method described above, serial transmission of digital data forming a 720P signal having a quantization bit number of 12, 14, or 16 bits is performed, for example, using a conventional HD digital video signal having a quantization bit number of 8 bits or 10 bits. It can be performed appropriately using circuit components used for serial transmission of digital data.

[0024]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an example of a data forming method according to one of claims 1 to 4 of the present application.
2 shows a data format of an example of digital data forming a 20P signal.

One example of the data forming method according to any one of the first to fourth aspects of the present invention for obtaining digital data having the data format shown in FIG. The digital data forming the 4: 2: 2 format 720P signal with the number of coded bits being 12, 14, or 16 bits is formed. Since such digital data is a 720P signal of 4: 2: 2 format, a Y data sequence having a quantization bit number of 12, 14, or 16 bits and a quantization bit number of 12 bits, 14 bits are used. It is made of a P _B / P _R data sequence to the bit or 16-bit.

Then, the data forming method according to any one of claims 1 to 4 of the present application which can obtain digital data having the data format shown in FIG. In one example, for the Y data sequence and the P _B / P _R data sequence, the frame portion is set to be continuous every 1/60 second, and each frame portion is defined by a line portion L001 to a line portion L750. It is formed with a series of 750 lines. In addition, the effective line portion in each frame portion is defined as a line portion L026 to a line portion L745,
The number of effective lines in each frame is set to 720 lines. Further, the sampling frequency is set to 74.25.
MHz, and the number of valid data samples in each line section is set to 1280 samples. Then, the number of quantization bits is selected to be 12, 14, or 16 bits.

Under these circumstances, each of the line portion L001 to the line portion L750 in each frame portion includes a line portion of a Y data sequence having a quantization bit number of 12, 14, or 16 bits, and a quantization portion. P _B whose bit number is 12, 14, or 16 bits
/ P and _R data series of the line portion, but will include,
In particular, for each of the line portion L026 to the line portion L745 forming the effective line portion, the state of the line portion L026 which is one of them is as shown in FIG. 1 bit
2 bits, the line portion of the Y data sequence to 14 bits or 16 bits, and 12 bits the number of quantization bits, respectively of the line portion of the P _B / P _R data sequence to 14 bits or 16 bits, Rainbu It is formed to include a ranking section and a video data section.

Each line blanking section is provided with a timing reference code: EAV at the beginning and a timing reference code: SAV at the end.
Are arranged. On the other hand, as for the video data portion, the video data portion in the Y data sequence is configured by arranging data YD representing luminance signal information with the effective data sample number being 1280 samples, and P _B / P
The video data portion in the _R data sequence is configured by arranging data PbD / PrD representing color difference signal information with 1280 effective data samples.

Further, the effective line in each frame portion
Line portion L026 to line portion L745
And the line portion of the Y data series and P_B
/ P _RVideo data in each of the line parts of the data series
YD or color difference signal representing luminance signal information
And data PbD / PrD representing signal information
The upper 8 bits may be 00h in hexadecimal notation
Is FFh (the subscript h represents hexadecimal) and
All 12-bit codes, 14-bit codes or
Is a 16-bit code, data representing luminance signal information
Data PbD / P representing YD or color difference signal information
The prohibition code is not used as rD.

The prohibition code determined in this way is:
As shown in FIG. 2, when the number of quantization bits is 12 bits, 000h to 00Fh and FF0h in hexadecimal notation.
FFFh, that is, 0000 0000 0000 to 0000 0000 111
1 and 1111 1111 0000 to 1111 1111 1111. When the number of quantization bits is 14 bits, 0 in hexadecimal notation.
000h to 003Fh and 3FC0h to FFFFh, ie, 00 0000 0000 OOOO to 00 0000 0011 1111 and
11 1111 1100 0000 to 11 1111 1111 1111 and when the quantization bit number is 16 bits, 0 in hexadecimal notation
000h to 00FFh and FF00h to FFFFh, that is, 0000 0000 0000 OOOO to 0000 00001111 1111 and 1111 1111 0000 0000 to 1111 1111 1111 1111.

As described above, the digital data having the data format shown in FIG. 1 is obtained, and the data is formed according to the invention described in any one of claims 1 to 4 of the present application. According to an example of the method, the frame rate is set to 60 Hz, the number of lines in each frame is 750, the number of effective lines in each frame is 720, and the sampling frequency is 7
4.25 MHz, the number of valid data samples in each line is set to 1280, and the number of quantization bits is set to 1
When 2 bits, 14 bits or 16 bits and the number of quantization bits are 12 bits, the prohibition code for each valid line portion is represented by the upper 8 bits of 00h in hexadecimal notation.
Or all 12-bit codes that are FFh,
When the number of quantization bits is 14 bits, the prohibition code for each effective line portion is all 14-bit codes in which the upper 8 bits are 00h or FFh in hexadecimal notation, or the number of quantization bits is 16 bits , The prohibition code for each valid line portion is set to all 1s whose upper 8 bits are 00h or FFh in hexadecimal notation.
Digital data forming a 720P signal in 4: 2: 2 format, which is a 6-bit code, is formed.

FIG. 3 shows a 720P formed by another example of the data forming method according to the invention described in any one of claims 1 to 4 in the claims of the present application.
1 shows a data format of an example of digital data forming a signal.

Another example of the data forming method according to any one of the first to fourth aspects of the present invention for obtaining digital data having the data format shown in FIG. 3 is as follows. And digital data forming a 4: 4: 4 format 720P signal having a quantization bit number of 12 bits. Since such digital data forms a 720P signal of 4: 4: 4 format, a G data sequence having a quantization bit number of 12 bits, a B data sequence having a quantization bit number of 12 bits, And an R data sequence having a quantization bit number of 12 bits.

Then, the data forming method according to any one of the first to fourth aspects of the present invention for obtaining digital data having the data format shown in FIG. In another example, for the G data sequence, the B data sequence, and the R data sequence, the frame portion is set to be continuous every 1/60 second, and each frame portion is set to the line portion L.
It is formed with a series of 750 line portions from 001 to a line portion L750. Further, the effective line portion in each frame portion is set to a line portion L026 to a line portion L745, and the number of effective line portions in each frame portion is set to 720.
Set in the line section. Further, if the sampling frequency is 7
The frequency is set to 4.25 MHz, and the number of valid data samples in each line portion is set to 1280 samples. Then, the number of quantization bits is selected to be 12 bits.

Under the circumstances, each of the line portion L001 to the line portion L750 in each frame portion has a G data sequence line portion having a quantization bit number of 12 bits and a quantization bit number of 12 bits. This includes a line portion of a B data sequence to be processed and a line portion of an R data sequence having a 12-bit quantization bit number. In particular, the line portion L026 to the line portion L745 forming an effective line portion are included.
As shown in FIG. 3, the state of the line section L026, which is one of them, is a line section of a G data sequence having a quantization bit number of 12 bits, as shown in FIG. The line portion of the B data sequence whose quantization bit number is 12 bits and the quantization bit number is 1
Each of the line portions of the R data sequence of 2 bits is formed as including a line blanking portion and a video data portion.

Each line blanking section is provided with a timing reference code: EAV at its start end and a timing reference code: SAV at its end.
Are arranged. On the other hand, as for the video data portion, the video data portion in the G data sequence is configured by arranging data GD representing green primary color signal information with 1280 effective data samples, and the video data portion in the B data sequence is Data BD representing blue primary color signal information having 1280 effective data samples is arranged and the video data portion in the R data sequence is represented by data RD representing red primary color signal information having 1280 effective data samples. Is arranged.

Further, a G data line, a B data line, and an R data line forming a line portion L026 to a line portion L745 forming an effective line portion in each frame portion, respectively. In each of the video data sections, data GD representing green primary color signal information, data BD representing blue primary color signal information, or data RD representing red primary color signal information are arranged, and the upper 8 bits are 00h in hexadecimal notation. All 12-bit codes that are FFh are prohibited codes that are not used as data GD representing green primary color signal information, data BD representing blue primary color signal information, and data RD representing red primary color signal information. The prohibition code determined in this way is also a case where the number of quantization bits shown in FIG. 2 is 12 bits.

As described above, a digital data having the data format shown in FIG. 3 is obtained, and the data is formed according to the invention as set forth in any one of claims 1 to 4 in the claims of the present application. According to another example of the method, the frame rate is 60 Hz, the number of lines in each frame is 750, the number of effective lines in each frame is 720, and the sampling frequency is 7
4.25 MHz, the number of valid data samples in each line is set to 1280, and the number of quantization bits is set to 1
Digital data forming a 4: 4: 4 format 720P signal is formed, in which all the 12-bit codes are set to 2 bits and the prohibition code for each effective line portion is set to all 12-bit codes in which the upper 8 bits are 00h or FFh in hexadecimal notation. Is done.

The digital data obtained by the example of the data forming method according to any one of the first to fourth aspects of the present invention is summarized in FIG. As shown, DVA12 and DVB12 are obtained as digital data forming a 720P signal having a quantization bit number of 12 bits,
DVA 14 is obtained as digital data forming a 720P signal having a quantization bit number of 14 bits, and DVA 16 is obtained as digital data forming a digital video signal having a quantization bit number of 16 bits.

FIG. 5 shows an example of a data transmission method according to the invention described in any one of claims 5 to 14 of the present application. A data transmission / reception device including a first example of the data transmission device according to the invention described in claim 15 or 16 is shown.

In the data transmitting / receiving apparatus shown in FIG. 5, the transmitting side constituting an example of the data transmitting apparatus according to the invention described in claim 15 or claim 16 of the present application transmits the 720P signal. The resulting digital data DVX is supplied to the data processing unit 11.

In FIG. 4, the digital data DVX corresponds to DVA12, DVA14, DVA16 and DVB1.
2, the frame rate is set to 60 Hz, the number of lines in each frame is set to 750, the number of effective lines in each frame is set to 720, the sampling frequency is set to 74.25 MHz, and the number of effective data samples in each line is set to 1280. When the number of quantization bits is 12, 14, or 16 bits and the number of quantization bits is 12 bits, the prohibition code for each effective line portion is such that the upper 8 bits are 00h or FFh in hexadecimal notation. When the number of quantization bits is 14 bits, the prohibition code for each valid line portion is
When all the 14-bit codes are 00h or FFh in hexadecimal representation and the number of quantization bits is 16 bits, the upper 8 bits of the prohibited code for each effective line portion are 00h or FFh in hexadecimal representation. All one
6-bit code 4: 2: 2 format or 4:
It is any of digital data forming a 720P signal in 4: 4 format.

The digital data DVX is DVA12 shown in FIG. 4 as digital data forming a 720P signal of 4: 2: 2 format with a quantization bit number of 12 bits.
, The digital data DVA12 is
As shown in A of FIG.
And Y data sequence which is a 12-bit word sequence data to be MBps, and a 12-bit word sequence data and have been P _B / P _R data sequence to 74.25MBps word transmission rate, synchronization frame synchronization and line bets Then, the data is supplied to the data processing unit 11 as 24-bit word string data having a word transmission rate of 74.25 MBps obtained by parallel multiplexing.

In the data processing section 11, the digital data DVA supplied as shown in FIG.
Against 12, 12-bit words constituting the Y data sequence YD0, YD1, YD2, YD3, ·····, and 12-bit words PbD0 constituting the P _B / P _R data sequence, prd0, PBD1, PRD1 , PbD2,
Each of PrD2,... Is represented by upper 10 bits Y0;
2-Y0; 11, Y1; 2-Y1; 11, Y2; 2-Y
2; 11, Y3; 2 to Y3; 11,...
Pb0; 2 to Pb0; 11, Pr0; 2 to Pr0; 1
1, Pb1; 2 to Pb1; 11, Pr1; 2 to Pr1;
11, Pb2; 2 to Pb2; 11, Pr2;
2; 11,..., And the lower 2 bits Y0;
0; 1, Y1; 0 to Y1; 1, Y2; 0 to Y2; 1, Y
3; 0 to Y3; 1,... And Pb0;
b0; 1, Pr0; 0 to Pr0; 1, Pb1; 0 to Pb
1; 1, Pr1; 0 to Pr1; 1, Pb2; 0 to Pb
2; 1, Pr2; 0 to Pr2; 1,...

Subsequently, a sequence of the divided upper 10 bits:
Y0; 2 to Y0; 11, Y1; 2 to Y1; 11, Y2;
2-Y2; 11, Y3; 2-Y3; 11, ...
And a sequence of the divided upper 10 bits: Pb0;
0; 11, Pr0; 2 to Pr0; 11, Pb1;
b1; 11, Pr1; 2 to Pr1; 11, Pb2; 2
Pb2; 11, Pr2; 2 to Pr2; 11, ...
And a word transmission rate of 7
20-bit word string data DV with 4.25 MBps
A12A is formed as a link A based on the divided upper 10 bits as shown in FIG. 6B.

At the same time, the divided lower two bits Y
0; 0 to Y0; 1, Y1; 0 to Y1; 1, Y2;
2; 1, Y3; 0 to Y3; 1,... And 8-bit auxiliary bits α0, α1, α2, α3,. 1 + α0, Y
1; 0 to Y1, 1 + α1, Y2; 0 to Y2, 1 + α2
Y3; 0 to Y3; 1 + α3,..., And the divided lower two bits Pb0; 0 to Pb0; 1, Pr
0; 0 to Pr0; 1, Pb1; 0 to Pb1; 1, Pr
1, 0-Pr1; 1, Pb2; 0-Pb2; 1, Pr
2; 0 to Pr2; 1,..., And 8 auxiliary bits β0, β1, β2, β3, β4, β5,.
, And 10 bits Pb0; 0 to Pb0; 1 + β
0, Pr0; 0 to Pr0; 1 + β1, Pb1; 0 to Pb
1; 1 + β2, Pr1; 0 to Pr1; 1 + β3, Pb
2; 0 to Pb2; 1 + β4, Pr2; 0 to Pr2; 1+
β5, ... And a 10-bit string: Y
0; 0 to Y0; 1 + α0, Y1; 0 to Y1; 1 + α1,
Y2; 0 to Y2; 1 + α2, Y3; 0 to Y3; 1 + α
..., 10-bit string: Pb0; 0 to Pb
0; 1 + β0, Pr0; 0 to Pr0; 1 + β1, Pb
1; 0 to Pb1, 1 + β2, Pr1; 0 to Pr1, 1+
β3, Pb2; 0 to Pb2; 1 + β4, Pr2;
The word transmission rate is 74.25 MBps, which is obtained by parallel multiplexing of r2; 1 + β5,.
The bit word string data DVA12B is formed as a link B based on the divided lower two bits as shown in FIG. 6C. That is, the word transmission rate is set to 74.25.
The digital data DVA12, which is 24-bit word string data at MBps, is transmitted at a word transmission rate of 74.2.
20-bit word string data DVA12 with 5 MBps
A and a word transmission rate of 74.25 MBps 2
This is converted into two-system word string data of 0-bit word string data DVA12B.

The digital data DVX is a DVA14 shown in FIG. 4 as digital data forming a 720P signal of 4: 2: 2 format with a quantization bit number of 14 bits.
, The digital data DVA14 is
As shown in A of FIG.
And Y data sequence which is a 14-bit word sequence data having a MBps, and P _B / P _R data sequence which is a 14-bit word sequence data to 74.25MBps word transmission rate, synchronization frame synchronization and line bets The data is then supplied to the data processing unit 11 as 28-bit word string data having a word transmission rate of 74.25 MBps obtained by parallel multiplexing.

In the data processing section 11, the digital data DVA supplied as shown in FIG.
Against 14, Y data series constituting 14-bit word YD0, YD1, YD2, YD3, ·····, and 14-bit words PbD0 constituting the P _B / P _R data sequence, prd0, PBD1, PRD1 , PbD2,
Each of PrD2,... Is represented by upper 10 bits Y0;
4-Y0; 13, Y1; 4-Y1; 13, Y2; 4-Y
2; 13, Y3; 4 to Y3; 13,...
Pb0; 4 to Pb0; 13, Pr0; 4 to Pr0; 1
3, Pb1; 4-Pb1; 13, Pr1; 4-Pr1;
13, Pb2; 4-Pb2; 13, Pr2; 4-Pr
.., And the lower 4 bits Y0; 0 to Y0;
3, Y1; 0 to Y1, 3; Y2, 0 to Y2, 3, Y3;
0 to Y3; 3,..., And Pb0;
0; 3, Pr0; 0 to Pr0; 3, Pb1; 0 to Pb
1; 3, Pr1; 0 to Pr1; 3, Pb2; 0 to Pb
2; 3, Pr2; 0 to Pr2; 3,...

Subsequently, a sequence of the divided upper 10 bits:
Y0; 4 to Y0; 13, Y1; 4 to Y1; 13, Y2;
4-Y2; 13, Y3; 4-Y3; 13, ...
And a sequence of the divided upper 10 bits: Pb0;
0; 13, Pr0; 4-Pr0; 13, Pb1; 4-P
b1; 13, Pr1; 4 to Pr1; 13, Pb2; 4 to
Pb2; 13, Pr2; 4 to Pr2; 13, ...
And a word transmission rate of 7
20-bit word string data DV with 4.25 MBps
A14A is formed as a link A based on the divided upper 10 bits as shown in FIG. 7B.

At the same time, the divided lower 4 bits Y
0; 0 to Y0; 3, Y1; 0 to Y1; 3, Y2;
..., 6-bit auxiliary bits α0, α1, α2, α3,... To 10-bit Y0; 0 to Y0; 3 + α0, Y
1; 0 to Y1, 3 + α1, Y2; 0 to Y2, 3 + α2
Y3; 0 to Y3; 3 + α3,..., And the divided lower 4 bits Pb0; 0 to Pb0; 3, Pr
0; 0 to Pr0; 3, Pb1; 0 to Pb1; 3, Pr
1; 0 to Pr1; 3, Pb2; 0 to Pb2; 3, Pr
2; 0 to Pr2; 3,..., 6-bit auxiliary bits β0, β1, β2, β3, β4, β5,.
, And 10 bits Pb0; 0 to Pb0; 3 + β
0, Pr0; 0 to Pr0; 3 + β1, Pb1; 0 to Pb
1; 3 + β2, Pr1; 0 to Pr1; 3 + β3, Pb
2; 0 to Pb2; 3 + β4, Pr2; 0 to Pr2; 3+
β5, ... And a 10-bit string: Y
0; 0 to Y0; 3 + α0, Y1; 0 to Y1; 3 + α1,
Y2; 0 to Y2; 3 + α2, Y3; 0 to Y3; 3 + α
..., 10-bit string: Pb0; 0 to Pb
0; 3 + β0, Pr0; 0 to Pr0; 3 + β1, Pb
1; 0 to Pb1, 3 + β2, Pr1; 0 to Pr1, 3+
β3, Pb2; 0 to Pb2; 3 + β4, Pr2;
The word transmission rate is 74.25 MBps, which is obtained by parallel multiplexing of r2; 3 + β5,.
The bit word string data DVA14B is formed as a link B based on the divided lower 4 bits as shown in FIG. 7C. That is, the word transmission rate is set to 74.25.
The digital data DVA14, which is 28-bit word string data of MBps, is transmitted at a word transmission rate of 74.2.
20-bit word string data DVA14 with 5 MBps
A and a word transmission rate of 74.25 MBps 2
This is converted into two-system word string data of 0-bit word string data DVA14B.

The digital data DVX is a DVA16 shown in FIG. 4 as digital data forming a 720P signal in 4: 2: 2 format with a quantization bit number of 16 bits.
, The digital data DVA16 is
As shown in A of FIG.
And Y data sequence which is a 16-bit word sequence data to be MBps, and P _B / P _R data sequence which is a 16-bit word sequence data to 74.25MBps word transmission rate, synchronization frame synchronization and line bets Then, the data is supplied to the data processing unit 11 as 32-bit word string data having a word transmission rate of 74.25 MBps obtained by parallel multiplexing.

In the data processing section 11, the digital data DVA supplied as shown in FIG.
Against 16, 16-bit words constituting the Y data sequence YD0, YD1, YD2, YD3, ·····, and 16-bit words PbD0 constituting the P _B / P _R data sequence, prd0, PBD1, PRD1 , PbD2,
Each of PrD2,... Is represented by upper 10 bits Y0;
6 to Y0; 15, Y1; 6 to Y1; 15, Y2; 6 to Y
2; 15, Y3; 6 to Y3; 15, ..., and
Pb0; 6 to Pb0; 15, Pr0; 6 to Pr0; 1
5, Pb1; 6 to Pb1; 15, Pr1; 6 to Pr1;
15, Pb2; 6 to Pb2; 15, Pr2; 6 to Pr
.. And the lower 6 bits Y0; 0 to Y0;
5, Y1; 0 to Y1, 5; Y2, 0 to Y2, 5, Y3;
0 to Y3; 5,..., And Pb0;
0; 5, Pr0; 0 to Pr0; 5, Pb1; 0 to Pb
1, 5, Pr1; 0 to Pr1, 5, Pb2, 0 to Pb
2; 5, Pr2; 0 to Pr2; 5,...

Subsequently, a sequence of the upper 10 bits divided:
Y0; 6 to Y0; 15, Y1; 6 to Y1; 15, Y2;
6 to Y2; 15, Y3; 6 to Y3; 15, ...
And a sequence of the divided upper 10 bits: Pb0; 6 to Pb
0; 15, Pr0; 6 to Pr0; 15, Pb1; 6 to P
b1; 15, Pr1; 6 to Pr1; 15, Pb2; 6 to
Pb2; 15, Pr2; 6 to Pr2; 15, ...
And a word transmission rate of 7
20-bit word string data DV with 4.25 MBps
A16A is formed as a link A based on the divided upper 10 bits as shown in FIG. 8B.

At the same time, the divided lower 6 bits Y
0; 0 to Y0; 5, Y1; 0 to Y1; 5, Y2;
..., 4 bits of supplementary bits α0, α1, α2, α3,... Are added to 10 bits Y0; 0 to Y0; 5 + α0, Y
1; 0 to Y1, 5 + α1, Y2; 0 to Y2, 5 + α2
Y3; 0 to Y3; 5 + α3,... And the lower 6 bits Pb0; 0 to Pb0; 5, Pr
0; 0 to Pr0; 5, Pb1; 0 to Pb1; 5, Pr
1, 0-Pr1; 5, Pb2; 0-Pb2; 5, Pr
2; 0 to Pr2; 5,..., 4 auxiliary bits β0, β1, β2, β3, β4, β5,.
, And 10 bits Pb0; 0 to Pb0; 5 + β
0, Pr0; 0 to Pr0; 5 + β1, Pb1; 0 to Pb
1: 5 + β2, Pr1; 0 to Pr1; 5 + β3, Pb
2; 0 to Pb2; 5 + β4, Pr2; 0 to Pr2; 5+
β5, ... And a 10-bit string: Y
0; 0 to Y0; 5 + α0, Y1; 0 to Y1; 5 + α1,
Y2; 0 to Y2; 5 + α2, Y3; 0 to Y3; 5 + α
..., 10-bit string: Pb0; 0 to Pb
0; 5 + β0, Pr0; 0 to Pr0; 5 + β1, Pb
1; 0 to Pb1, 5 + β2, Pr1; 0 to Pr1, 5+
β3, Pb2; 0 to Pb2; 5 + β4, Pr2;
The word transmission rate is 74.25 MBps, which is obtained by parallel multiplexing of r2; 5 + β5,.
The bit word string data DVA16B is formed as a link B based on the divided lower 4 bits as shown in FIG. 8C. That is, the word transmission rate is set to 74.25.
Digital data DVA16, which is 32-bit word string data of MBps, is transmitted at a word transmission rate of 74.2.
20-bit word string data DVA16 with 5 MBps
A and a word transmission rate of 74.25 MBps 2
This is converted into two-system word string data of 0-bit word string data DVA16B.

Further, the digital data DVX is converted into a 4: 4: 4 format 720 with a quantization bit number of 12 bits.
D shown in FIG. 4 as digital data forming the P signal
VB12, the digital data DVB12
, As shown in FIG.
A G data sequence of 12-bit word string data of 25 MBps and a word transmission rate of 74.25 MBp
B data sequence as 12-bit word string data as s, and 1 as a word transmission rate of 74.25 MBps
A word transmission rate of 74.25 MB, which is obtained by performing parallel multiplexing on the R data sequence converted to 2-bit word string data under frame synchronization and line synchronization, is obtained.
The data is supplied to the data processing unit 11 as 36-bit word string data of ps.

In the data processing section 11, the digital data DVB12 supplied as shown in FIG.
, The 12-bit word G forming the G data sequence
D0, GD1, GD2, GD3,..., 12-bit words BD0, BD1, BD constituting a B data sequence
, GD3,..., And 12-bit words RD0, RD1, RD2, RD3 constituting the R data sequence
······, each of the upper 10 bits G0; 2 to G0;
11, G1; 2-G1; 11, G2; 2-G2; 11,
G3; 2 to G3; 11,..., B0;
11, B1; 2-B1; 11, B2; 2-B2; 11,
B3; 2 to B3; 11,..., And R0;
R0; 11, R1; 2 to R1; 11, R2; 2 to R2;
11, R3; 2 to R3; 11,..., And lower two bits G0; 0 to G0; 1, G1;
0 to G2; 1, G3; 0 to G3; 1, ..., B
0; 0 to B0; 1, B1; 0 to B1; 1, B2;
2, 1, B3; 0 to B3; 1,..., And R
0; 0 to R0; 1, R1; 0 to R1; 1, R2;
2; 1, R3; 0 to R3; 1,...

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

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

Then, the word transmission rate is set to 74.25 based on the 10-bit word group 1 shown in FIG.
20-bit word string data DVB12A with MBps
Is formed as the link A as shown in FIG. 11A, and the word transmission rate is 74.25 MBp based on the 10-bit word group 2 shown in FIG.
The 20-bit word string data DVB12B as s is formed as a link B as shown in FIG.
That is, the word transmission rate is set to 74.25 MBps3
Digital data DVB which is 6-bit word string data
12 is converted into two types of word string data: 20-bit word string data DVB12A having a word transmission rate of 74.25 MBps and 20-bit word string data DVB12B having a word transmission rate of 74.25 MBps.

The data processing section 11 has a set of 20-bit word string data DVA12A and DVA12B, a set of DVA14A and DVA14B, and a set of DVA16A with a word transmission rate of 74.25 MBps obtained as described above.
And DVA16B, and DVB12A and DVB
12B is converted to 20-bit word string data D
It is derived as a set of PA (20) and DPB (20).

The 20-bit word string data DPA (20) having a word transmission rate of 74.25 MBps sent from the data processing unit 11 is supplied to the data insertion unit 12. The data insertion unit 12 inserts auxiliary data DAA including channel identification data as needed into the 20-bit word string data DPA (20), and inserts the 20-bit word string data DPA 'into which the auxiliary data DAA has been inserted.
Form (20). 2 obtained from the data insertion unit 12
The 0-bit word string data DPA ′ (20) is supplied to the parallel / serial (P / S) conversion unit 13.

The P / S converter 13 performs P / S conversion on the 20-bit word string data DPA ′ (20), and sets the bit transmission rate based on the 20-bit word string data DPA ′ (20) to 74. .25 MBps × 20 = 1.
Forming serial data DSA of 485 Gbps,
The serial data DSA is supplied to the bit multiplexing unit 14.

On the other hand, 20-bit word string data DPB (20) having a word transmission rate of 74.25 MBps sent from the data processing unit 11 is supplied to the data insertion unit 15. The data insertion unit 15 inserts auxiliary data DAB including channel identification data as necessary into the 20-bit word string data DPB (20), and inserts the 20-bit word string data D into which the auxiliary data DAB has been inserted.
PB '(20) is formed. The 20-bit word string data DPB ′ (20) obtained from the data insertion unit 15 is
/ S converter 16.

The P / S conversion section 16 performs P / S conversion on the 20-bit word string data DPB '(20) to increase the bit transmission rate based on the 20-bit word string data DPB' (20) by 74. .25 MBps × 20 = 1.
Forming serial data DSB of 485 Gbps,
The serial data DSB is supplied to the bit multiplexing unit 14.

The bit multiplexing section 14 performs an operation of alternately taking out one bit at a time from each of the serial data DSA and the serial data DSB and sequentially arranging them, thereby performing a bit multiplexing / combining process on the serial data DSA and the serial data DSB. To make the bit transmission rate 1.485
The composite serial data DSZ with Gbps × 2 = 2.97 Gbps is formed.

The composite serial data DSZ obtained from the bit multiplexing section 14 is supplied to an electro-optical conversion section (E / O conversion section) 17. The E / O conversion unit 17 performs an electro-optical conversion process on the composite serial data DSZ, converts an optical signal OZV having a center wavelength based on the serial data DSZ of, for example, approximately 1.3 μm, to a bit transmission rate of 2.97 Gbp.
s and transmit it as a transmission signal. Under such circumstances, the bit multiplexing unit 14 and the E / O conversion unit 17 form a data transmission unit that transmits the serial data DSA and DSB obtained from the P / S conversion units 13 and 16, respectively, for transmission. .

The optical signal OZV, which is a transmission signal transmitted from the E / O conversion unit 17, is guided to the optical fiber transmission line 20 through the optical connector 18, and is transmitted to the receiving side through the optical fiber transmission line 20. Optical fiber transmission line 20
Is formed using, for example, a quartz single mode fiber (quartz SMF).

On the receiving side, the optical fiber transmission line 2
0 is transmitted to the optical connector 21.
Through the photoelectric conversion unit (O / E conversion unit) 22. In the O / E converter 22, the center wavelength is set to approximately 1.3.
A composite serial data having a bit transmission rate of 2.97 Gbps based on an optical signal OZV having an optical signal OZV having a center wavelength of approximately 1.3 μm by subjecting the optical signal OZV having a μm to photoelectric conversion processing to a bit transmission rate of 2.97 Gbps. DS
Play Z. Then, the reproduced composite serial data DSZ is supplied to the bit separation unit 23.

The bit separation section 23 sequentially takes out one bit at a time from the composite serial data DSZ,
An operation of forming every other bit group is performed, and a bit separation process is performed on the composite serial data DSZ. Then, a channel is specified by using the channel identification data included in the composite serial data DSZ, and based on the composite serial data DSZ, a two-channel serial whose bit transmission rate is 2.97 Gbps / 2 = 1.485 Gbps. Form data DSA and DSB. The serial data DSA is supplied to a serial / parallel (S / P) converter 24, and the serial data DSB is supplied to an S / P converter 25.

The S / P conversion unit 24 performs S / P conversion on the serial data DSA to convert the serial data DSA into serial data DSA.
A 20-bit word string data DPA ′ (20) having a word transmission rate of 74.25 MBps based on A is reproduced and supplied to the data separation unit 26. In the data separation unit 26, the 20-bit word string data DPA '
From (20), the auxiliary data DAA including the channel identification data is separated and the 20-bit word string data DP
A (20) and the auxiliary data DAA are sent separately,
The 0-bit word string data DPA (20) is supplied to the data time difference absorbing unit 27.

The S / P converter 25 performs S / P conversion on the serial data DSB, and adjusts the word transmission rate based on the serial data DSB to 74.25 MB.
20-bit word string data DPB '(20) as ps
Is reproduced and supplied to the data separation unit 28. In the data separation unit 28, the 20-bit word string data DP
The auxiliary data DAB including the channel identification data is separated from B ′ (20), and the 20-bit word string data DPB (20) and the auxiliary data DAB are separately transmitted, and the 20-bit word string data DPB (20) Is supplied to the data time difference absorption unit 27.

In the data time difference absorbing section 27, the 20-bit word string data DPA from the data separating section 26
(20) and the mutual time difference generated between the 20-bit word string data DPB (20) from the data separation unit 28 are absorbed, and the word transmission rate based on the 20-bit word string data DPA (20) is reduced to 74.25 MBps. 20-bit word string data DPAQ (20) and 20-bit word string data D whose word transmission rate based on the 20-bit word string data DPB (20) is 74.25 MBps
The PBQ (20) is transmitted as being intended to be maintained in a state where there is substantially no mutual time difference.

20 obtained from the data time difference absorbing section 27
The bit word string data DPAQ (20) and the 20-bit word string data DPBQ (20) are supplied to the data reproduction processing unit 30. In the data reproduction processing unit 30,
The 20-bit word string data DPAQ (20) and the 20-bit word string data DPBQ (20) are converted into digital data DV by the data processing unit 11 on the transmission side.
X is subjected to a data reproduction process that is the reverse of the data conversion process performed on X, and the 20-bit word string data DPAQ (20) and 2
The digital data DVX based on the 0-bit word string data DPBQ (20) is reproduced. In FIG. 4, such digital data DVX is DVA12, DVA1
4, the DVA 16 and the DVB 12 have a frame rate of 60 Hz, 750 lines in each frame, and 7 effective lines in each frame.
20 lines, sampling frequency 74.25MHz,
When the number of valid data samples in each line is set to 1280, the number of quantization bits is set to 12, 14, or 16 bits, and the number of quantization bits is set to 12 bits, the prohibition code for each effective line portion is higher. When all 8 bits are all 12-bit codes in hexadecimal representation 00h or FFh, and when the number of quantization bits is 14 bits, the prohibition code for each valid line part is the upper 8 bits in hexadecimal representation 00h or F
When all the 14-bit codes are set to Fh and the number of quantization bits is set to 16 bits, the prohibition code for each effective line part is set to all 16-bit codes that set the upper 8 bits to 00h or FFh in hexadecimal notation. Done,
It is either digital data forming a digital video signal in 4: 2: 2 format or 4: 4: 4 format.

FIG. 12 is a block diagram showing an embodiment of a data transmission method according to the present invention described in any one of claims 5 to 14. A part of a data transmission / reception device including a second example of the data transmission device according to the invention described in item 15 or 16 is shown.

The data transmission / reception device whose part is shown in FIG. 12 has many parts configured similarly to the data transmission / reception device shown in FIG. 5, and FIG. 12 shows the data transmission / reception device shown in FIG. Only the parts different from those described above and the parts related thereto are shown.

The data transmission / reception device whose part is shown in FIG. 12 does not include the bit multiplexing unit 14 and the bit separation unit 23 provided in the data transmission / reception device shown in FIG. E / O converters 31 and 32 and an O / E converter 38 instead of the E / O converter 17 and the O / E converter 22 provided in the data transmitting / receiving device
And 39.

In the data transmission / reception apparatus whose part is shown in FIG.
Is supplied to the E / O converter 31, and the serial data DSB with the bit transmission rate of 1.485 Gbps from the P / S converter 16 is supplied to the E / O converter 32. In the E / O converter 31, the serial data D
The SA is subjected to electro-optical conversion processing to form an optical signal OSA having a center wavelength of, for example, about 1.3 μm based on the serial data DSA as a signal having a bit transmission rate of 1.485 Gbps. Lead to 33. In the E / O conversion unit 32, the serial data DS
B is subjected to electro-optical conversion processing to form an optical signal OSB having a center wavelength of, for example, approximately 1.55 μm based on the serial data DSB as a signal having a bit transmission rate of 1.485 Gbps, and combining it with a multiplexing unit. Lead to 33.

The multiplexing section 33 is formed by, for example, a fiber-type WDM coupler (fiber-type WDM coupler). In the multiplexing section 33, the center wavelength is set to approximately 1.
Optical signal OSA of 3 μm and center wavelength of about 1.55 μm
Is multiplexed with the optical signal OSB to form a multiplexed optical signal OSZ, which is transmitted as a transmission signal. Under these circumstances, the E / O conversion units 31 and 32 and the multiplexing unit 33
Forms a data transmission unit that transmits serial data DSA and DSB obtained from the P / S conversion units 13 and 16 respectively for transmission.

The multiplexed optical signal OSZ, which is a transmission signal transmitted from the multiplexing unit 33, is guided to an optical fiber transmission line 35 through an optical connector 34, and is transmitted to the receiving side through the optical fiber transmission line 35. Optical fiber transmission line 35
Is formed using, for example, a quartz-based SMF.

On the receiving side, the optical fiber transmission line 3
The multiplexed optical signal OSZ transmitted through 5 is guided to the demultiplexer 37 through the optical connector 36. The demultiplexer 37
For example, a fiber-type WDM coupler is used as a demultiplexing unit. Then, in the demultiplexing unit 37, the multiplexed optical signal OSZ is demultiplexed into a component having a center wavelength of approximately 1.3 μm and a component having a center wavelength of approximately 1.55 μm, and the bit transmission rate is set to 1 .485 Gbps, an optical signal OSA having a center wavelength of about 1.3 μm, a bit transmission rate of 1.485 Gbps, and a center wavelength of about 1.48 Gbps.
The optical signal OSB of 55 μm is reproduced.

The optical signal OSA reproduced by the demultiplexer 37
And OSB are guided to O / E converters 38 and 39, respectively. The O / E converter 38 performs a photoelectric conversion process on the optical signal OSA having a center wavelength of approximately 1.3 μm to set a bit transmission rate to 1.485 Gbps and a light having a center wavelength of approximately 1.3 μm. The serial data DSA whose bit transmission rate is 1.485 Gbps based on the signal OSA is reproduced. Then, the reproduced serial data DSA is supplied to the S / P converter 24. Also, O
In the / E converter 39, the center wavelength is approximately 1.55 μm
The optical signal OSB is subjected to photoelectric conversion processing to set the bit transmission rate to 1.485 Gbps and set the center wavelength to approximately 1.85 Gbps.
It reproduces serial data DSB having a bit transmission rate of 1.485 Gbps based on an optical signal OSB of 55 μm. Then, the reproduced serial data DSB
Is supplied to the S / P converter 25. Other operations are
This is the same as the case of the data transmission / reception device shown in FIG.

FIG. 13 shows an example of a data transmission method according to the invention described in any one of claims 5 to 14 in the claims of the present application. A part of a data transmission / reception device including a third example of the data transmission device according to the invention described in item 15 or 16 is shown.

The data transmission / reception device whose part is shown in FIG. 13 has many parts which are configured similarly to the data transmission / reception device whose part is shown in FIG. 12, and FIG. Only the parts different from the data transmission / reception device to be used and the parts related thereto are shown.

The data transmission / reception device whose part is shown in FIG. 13 does not include the multiplexing unit 33 and the demultiplexing unit 37 provided in the data transmission / reception device whose part is shown in FIG. An E / O conversion section 40 and an O / E conversion section 41 are provided instead of the E / O conversion section 32 and the O / E conversion section 39 provided in the data transmission / reception device shown in FIG.

In the data transmission / reception device whose part is shown in FIG. Serial data DS
An optical signal OSB having a center wavelength of, for example, approximately 1.3 μm based on B has a bit transmission rate of 1.485 Gbp.
s. Under such circumstances, E / O
The conversion units 31 and 40 form a data transmission unit that transmits serial data DSA and DSB obtained from the P / S conversion units 13 and 16, respectively, for transmission.

An optical signal OSA having a bit transmission rate of 1.485 Gbps and a center wavelength of approximately 1.3 μm, which is derived from the E / O converter 31, is guided to the optical fiber transmission line 43 through the optical connector. The bit transmission rate is 1.485 Gbps and the center wavelength is approximately 1.3 μm, which is transmitted to the receiving side through the optical fiber transmission line 43 and is derived from the E / O converter 40.
Is guided to the optical fiber transmission line 45 through the optical connector 44 and transmitted to the receiving side through the optical fiber transmission line 45. Optical fiber transmission line 43
And 45 are also formed using, for example, quartz-based SMF.

On the receiving side, the optical fiber transmission line 4
The optical signal OSA transmitted through the optical connector 46
Through the O / E converter 38, and the O / E converter 3
8, serial data DSA having a bit transmission rate of 1.485 Gbps is reproduced based on an optical signal OSA having a bit transmission rate of 1.485 Gbps and a center wavelength of about 1.3 μm. Further, the optical signal OSB transmitted through the optical fiber transmission line 45 is guided to the O / E conversion unit 41 through the optical connector 47, and
In the conversion unit 41, the bit transmission rate is set to 1.485G.
b. Optical signal OS having a center wavelength of about 1.3 μm.
B, the bit transmission rate is 1.485 Gbps
Is reproduced. Other operations are the same as those of the data transmitting / receiving apparatus whose part is shown in FIG.

[0088]

As is clear from the above description, according to the data forming method according to any one of the first to fourth aspects of the present invention,
The number of quantization bits is 12 bits, 14 bits or 16
72 formed by digital data to be bits
The digital data forming the 720P signal is obtained from all 12-bit codes, 14-bit codes, or 1-bit codes in which the prohibition code for each valid line portion has the upper 8 bits of 00h or FFh in hexadecimal notation.
By using the 6-bit code, 8-bit word string data or 10-bit word string data formed by a series of upper 8 bits or upper 10 bits of each 12-bit word, 14-bit word, or 16-bit word is converted to the previous data. This means compatibility with digital data forming a 720P signal having a quantization bit number of 8 bits or 10 bits.

Therefore, the digital data forming the 720P signal obtained by the data forming method according to any one of the first to fourth aspects of the present invention is, for example, a conventional quantum data. It can be used for processing such as recording / reproducing, editing, image reproducing, etc. using a device for digital data forming a 720P signal having 8 or 10 bits.

The data transmission method according to any one of the fifth to fourteenth aspects of the present invention as described above, or the first aspect.
5 or the data transmission apparatus according to the invention according to claim 16, wherein the number of quantization bits is 12 bits, 14 bits.
The digital data forming the 720P signal having 16 bits or 16 bits is compatible with the digital data forming the HD digital video signal each having the conventional quantization bit number of 8 bits or 10 bits. , And further, each of the plurality of word string data is converted into serial data and transmitted.

Therefore, the data transmission method according to the invention described in any one of claims 5 to 14 in the claims of the present application, or the invention described in claim 15 or claim 16 According to such a data transmission apparatus, serial transmission of digital data forming a 720P signal having a quantization bit number of 12, 14, or 16 bits is performed, for example, by setting the conventional quantization bit number to 8 bits or 10 bits. It can be appropriately performed using circuit components used for serial transmission of digital data forming an HD digital video signal.

[Brief description of the drawings]

FIG. 1 shows an example of a data format of digital data forming a 720P signal formed by an example of a data forming method according to any one of claims 1 to 4 in the claims of the present application. FIG.

FIG. 2 is a diagram illustrating a prohibition code in digital data forming a 720P signal formed by an example of a data forming method according to any one of claims 1 to 4 in the claims of the present application. FIG.

FIG. 3 shows an example of digital data forming a 720P signal which is formed by another example of the data forming method according to any one of claims 1 to 4 in the claims of the present application. It is a conceptual diagram showing a format.

FIG. 4 is provided for explaining digital data forming a 720P signal formed by an example of the data forming method according to any one of claims 1 to 4 in the claims of the present application. FIG.

FIG. 5 is a block diagram showing an embodiment of a data transmission method according to any one of claims 5 to 14 according to the present invention; FIG. 17 is a block connection diagram showing a data transmission / reception device including a first example of the data transmission device according to the invention described in claim 16.

FIG. 6 is a conceptual diagram showing data used for explaining the operation of a data processing unit in the data transmission / reception device shown in FIG.

FIG. 7 is a conceptual diagram showing data used for explaining the operation of a data processing unit in the data transmitting / receiving apparatus shown in FIG.

8 is a conceptual diagram showing data used for explaining the operation of a data processing unit in the data transmitting / receiving apparatus shown in FIG.

9 is a conceptual diagram showing data used for explaining the operation of a data processing unit in the data transmission / reception device shown in FIG.

FIG. 10 is a conceptual diagram showing data used for explaining the operation of a data processing unit in the data transmitting / receiving apparatus shown in FIG.

11 is a conceptual diagram showing data used for explaining the operation of a data processing unit in the data transmission / reception device shown in FIG.

FIG. 12 is a block diagram showing an embodiment of a data transmission method according to any one of claims 5 to 14 according to the present invention; FIG. 17 is a block connection diagram showing a part of a data transmission / reception device including a second example of the data transmission device according to the invention described in claim 16.

FIG. 13 is a block diagram showing an embodiment of a data transmission method according to any one of claims 5 to 14 according to the present invention; FIG. 17 is a block connection diagram showing a part of a data transmission / reception device including a third example of the data transmission device according to the invention described in claim 16.

FIG. 14 is a conceptual diagram illustrating an example of a data format of an HD digital video signal.

FIG. 15 is a conceptual diagram explaining an example of a data format of an HD digital video signal.

[Explanation of symbols]

11 ... data processing unit, 12, 15 ... data insertion unit, 13, 16 ... P / S conversion unit, 14 ...
Bit multiplexing part, 17, 31, 32, 40 ... E / O
Conversion unit, 18, 21, 34, 36, 42, 44, 4
6, 47 ... optical connector, 20, 35, 43, 45
... Optical fiber transmission lines, 22, 38, 39, 41
... O / E converter, 23 ... bit separation unit, 2
4, 25: S / P converter, 26, 28: data separator, 27: data time difference absorber, 30
..Data reproduction processing section, 33 multiplexing section, 37
..Demultiplexing section

────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] May 1, 2001 (2001.5.1)

[Procedure amendment 1]

[Document name to be amended] Drawing

[Correction target item name] Fig. 4

[Correction method] Change

[Correction contents]

FIG. 4

Claims (16)

[Claims] 1. A frame section is set to be continuous every 1/60 second, each frame section is formed with a series of 750 line sections, and the number of effective line sections in each frame section is set to 720 line sections. When the number of effective bits in the line portion is set to 1280 samples and the number of quantization bits is set to 12, 14, or 16 bits, and the number of quantization bits is set to 12 bits, prohibition of each effective line portion is prohibited. Top 8 codes
When all bits are 00h or FFh in hexadecimal notation (the subscript h represents a hexadecimal number) and the quantization bit number is 14 bits, the prohibition code for each effective line portion is All 1s whose upper 8 bits are 00h or FFh in hexadecimal notation
When a 4-bit code is used and the number of quantization bits is set to 16 bits, the prohibition code for each effective line portion is set to the upper 8 bits.
A data forming method for forming digital data forming a digital video signal as all 16-bit codes whose bits are 00h or FFh in hexadecimal notation. 2. The method according to claim 1, wherein each line portion is formed by a line blanking portion and a video data portion following the line blanking portion, and the number of valid data samples in the video data portion is set to 1280 samples. Item 1
Data formation method as described. 3. A digital data forming a digital video signal, a first data sequence in which a video data portion is provided with data representing luminance signal information, and a video data portion is provided with data representing color difference signal information. 3. The data forming method according to claim 2, wherein the data forming method is formed in parallel arrangement with the second data sequence configured. 4. A digital data forming a digital video signal, a video data portion is composed of a first data sequence in which data representing green primary color signal information is arranged, and a video data portion is data representing blue primary color signal information. 3. The image processing apparatus according to claim 2, wherein the second data series arranged and arranged and the third data series arranged and arranged with the data representing the red primary color signal information in the video data part are arranged in parallel. Data formation method as described. 5. The frame rate is set to 60 Hz, the number of lines in each frame is set to 750, the number of effective lines in each frame is set to 720, the number of effective data samples in each line is set to 1280, and the number of quantization bits is set to 12 The digital data forming the digital video signal of 14 bits or 16 bits is subjected to a process of dividing each 12 bits, 14 bits or 16 bits word into upper 10 bits and lower 2 bits, 4 bits or 6 bits. , Top 1 divided
Word transmission rate based on 0 bits is 74.25 MBp
s, and second word string data having a word transmission rate based on the divided lower 2 bits, 4 bits, or 6 bits of 74.25 MBps, are formed. A data transmission method for obtaining first and second serial data based on the second word string data and transmitting the first and second serial data for transmission. 6. A digital data constituting a digital video signal, wherein a first data sequence constituted by data representing luminance signal information is arranged, and a second data sequence constituted by data representing color difference signal information are arranged. 6. The data transmission method according to claim 5, wherein the data transmission method is formed with a parallel arrangement with the data sequence. 7. Each of the first and second word string data is:
7. The data transmission method according to claim 6, wherein the data is 20-bit word string data composed of a series of 20-bit words. 8. A first optical signal is obtained by performing an electro-optical conversion process on the first serial data, and a second optical signal is obtained by performing an electro-optical conversion process on the second serial data. 8. The data transmission method according to claim 5, wherein the second optical signal is transmitted. 9. The multiplexed serial data is formed by multiplexing and synthesizing the first serial data and the second serial data, an optical signal is obtained by performing an electro-optical conversion process on the multiplex serial data, and the optical signal is transmitted. The data transmission method according to any one of claims 5 to 7, wherein: 10. The frame rate is set to 60 Hz, the number of lines in each frame is set to 750, the number of effective lines in each frame is set to 720, the number of effective data samples in each line is set to 1280, and the number of quantization bits is set to 12 In the digital data forming the digital video signal in bits, each 12-bit word has
A process of dividing into 0 bits and lower 2 bits is performed, the upper 10 bits are divided into a first group and a second group, and a plurality of the lower 2 bits are multiplexed by a predetermined number. Then, in addition to the second group, first word string data having a word transmission rate of 74.25 MBps based on data forming the first group, and a word based on data forming the second group Forming second word string data having a transmission rate of 74.25 MBps;
A data transmission method for obtaining first and second serial data based on the respective word string data and transmitting the first and second serial data for transmission. 11. Digital data forming a digital video signal, a first data sequence composed of data representing green primary color signal information, and a second data sequence composed of data representing blue primary color signal information. 11. The data transmission according to claim 10, wherein the data transmission is formed in a parallel arrangement of a second data sequence and a third data sequence in which data representing red primary color signal information is arranged. Method. 12. The data processing system according to claim 10, wherein each of the first and second word string data is 20-bit word string data composed of a series of 20-bit words.
Data transmission method as described. 13. A first optical signal is obtained by performing an electro-optical conversion process on the first serial data, and a second optical signal is obtained by performing an electro-optical conversion process on the second serial data.
And transmitting a second optical signal.
The data transmission method according to any one of claims 0 to 12. 14. A multiplexed combination of the first serial data and the second serial data to form multiplexed serial data,
14. The data transmission method according to claim 10, wherein an optical signal is obtained by performing an electro-optical conversion process on the multiplexed serial data, and the optical signal is transmitted. 15. The frame rate is set to 60 Hz, the number of lines in each frame is set to 750, the number of effective lines in each frame is set to 720, the number of effective data samples in each line is set to 1280, and the number of quantization bits is set to 12 The digital data forming the digital video signal of 14 bits or 16 bits is subjected to a process of dividing each 12 bits, 14 bits or 16 bits word into upper 10 bits and lower 2 bits, 4 bits or 6 bits. , Top 1 divided
Word transmission rate based on 0 bits is 74.25 MBp
a data processing unit for forming first word string data of s and second word string data of a word transmission rate of 74.25 MBps based on the divided lower 2 bits, 4 bits or 6 bits; A first parallel / serial conversion unit for obtaining first serial data based on the first word string data obtained from the data processing unit; a second serial based on second word string data obtained from the data processing unit A second parallel / serial converter for obtaining data; and a data transmitter for transmitting the first and second serial data obtained from the first and second parallel / serial converters for transmission. Data transmission device composed of 16. A frame rate is set to 60 Hz, the number of lines in each frame is set to 750 lines, the number of valid lines in each frame is set to 720, and the number of valid data samples in each line is set to 1280.
Digital data forming a digital video signal having a quantization bit number of 12 bits is subjected to a process of dividing each 12-bit word into upper 10 bits and lower 2 bits, and a plurality of the divided upper 10 bits are divided into first bits. Group and second
, And multiplex a predetermined number of the lower 2 bits into the second group, and set the word transmission rate based on the data constituting the first group to 74.25 MBps. A data processing unit for forming first word string data and second word string data having a word transmission rate of 74.25 MBps based on the data constituting the second group, obtained from the data processing unit A first parallel / serial converter that obtains first serial data based on the first word string data; and a second parallel / serial converter that obtains second serial data based on the second word string data obtained from the data processor. A parallel / serial converter, and first and second serial data respectively obtained from the first and second parallel / serial converters Composed data transmission apparatus and a data transmitting portion for transmitting.