JP2001231040A - Data transmission method and data transmission system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a data transmission method and a data transmission system that adopt a system, where a plurality of composite 8-bit word stream data generated on the basis of a plurality of 8-bit word stream data obtained by dividing word stream data and each including word synchronous data is subjected to 8B/10B conversion and S/P conversion and the resulting data are transmitted, and use a plurality of transmission channels to transmit digital video signal data. SOLUTION: A plurality of composite 8-bit word stream data is formed by inserting an attached word data group including 8-bit word synchronous data having a preset code to each of a plurality of division 8-bit word stream data obtained by dividing the word stream data consisting of consecutive word data each in a prescribed bit number, a P/S conversion means incorporating an 8B/10B conversion means applies 8B/10B conversion to each of a plurality of the composite 8-bit word stream data and the P/S conversion means applies P/S conversion to each of a plurality of the composite 8-bit word stream data to obtain a plurality of serial data, each of which is transmitted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The invention described in the claims of the present application divides word string data consisting of a series of word data of a predetermined number of bits, for example, digital information data forming a digital video signal. Data transmission method for obtaining a plurality of 8-bit word string data, performing 8-bit / 10-bit conversion on each of them, converting them into serial data, and transmitting the resulting serial data for transmission 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 converted into serial data, an electric signal based on the serial data is obtained, and the signal is coaxial. A system for transmitting data through a transmission line formed using a cable or twisted pair line,
Alternatively, digital data is converted into serial data, and the serial data is converted into an optical signal, and the optical
A system for transmitting data through a transmission line formed using fibers has been put to practical use.

As one of such digital data transmission systems, a fiber channel system (Fibr
e Channel System) is known. Digital data handled under a digital data transmission system such as this fiber channel system is converted at the transmission side into, for example, 10 bits every 8 bits, and the conversion table is prepared in advance. , And is converted to 10-bit word string data by performing an 8-bit / 10-bit conversion (8B / 10B conversion). And what is actually transmitted is 8B
The serial data is obtained by further performing parallel / serial conversion (P / S conversion) on the 10-bit word string data formed by performing the / 10B conversion.

[0004] On the receiving side, serial / parallel conversion (S / P conversion) is performed on the received serial data.
Is performed to form 10-bit word string data, and the 10-bit word string data is converted into 8 bits for every 10 bits, and the conversion is performed according to a conversion table prepared in advance. Bit / 8-bit conversion (10B / 8B conversion) is performed. Thus 10B / 8
The original digital data is reproduced from the word string data formed by performing the B conversion.

[0005] As described above, data transmission in which digital data to be transmitted is subjected to 8B / 10B conversion provides good transmission quality by using 10-bit words having selected contents. Has been recognized as.

[0006] Digital data transmitted as 10-bit word string data under a digital data transmission system such as a fiber channel system is called a "frame" as shown in FIG. 23, for example. It follows the data format in which the smallest independent packet is formed. The "frame" shown in FIG. 23 has a total of 2148 bytes, and includes a frame start portion having a 4-byte structure, a frame header portion having a 24-byte structure, and an optional header portion having a 64-byte structure. , A 2048-byte payload portion, a 4-byte error check portion, and a 4-byte frame end portion are sequentially connected.

[0007] A 2048-byte payload portion of each portion constituting these "frames" stores 10-bit word string data representing signal information. That is,
When the 10-bit word string data is transmitted,
On the transmitting side, a "frame" in which a 10-bit word string data of a maximum of 2048 bytes is stored in the payload portion
Are formed, and are sequentially transmitted. On the receiving side, 10-bit word string data is extracted from the payload portion of each of a number of sequentially arriving "frames".

In each of the 10-bit word data (10-bit word data) in such 10-bit word string data, 10 bits constituting the word data have the following structure.
The number of “1” is greater than the number of “0”, the number of “0” is greater than the number of “1”, or the number of “1” is equal to the number of “0”. In expressing the states of the respective numbers of “1” and “0”, for example, running disparity (Running Disparity)
: RD), the running disparity (RD) is said to be positive when the number of “1” is larger than the number of “0”, and when the number of “0” is “1”. Is greater than the number of "", RD is said to be negative, and when the number of "1" is equal to the number of "0", the RD is neutral. And the number of “1” is “0”
Is greater than the number of "1", and the word data having the number of "0" greater than the number of "1" is R
Word data in which D is negative and word data in which the number of "1" is equal to the number of "0" are referred to as word data in which RD is neutral (neutral word data).

When the 10-bit word string data is transmitted as described above, the receiving side performs S / P conversion on the received serial data to obtain 10-bit word string data based on the serial data. Is the 10B / 8B conversion performed on the 10-bit word string data obtained by the S / P conversion,
It is necessary to properly grasp each word data of the 10-bit configuration. Therefore, on the transmission side, the 10-bit word string data transmitted as serial data is assumed to be appropriately inserted with word synchronization data. You. The word synchronization data is a 10-bit word data, but has a specific code that is not used as the 10-bit word data for transmitting information. When the word synchronization data is inserted, if the immediately preceding word data has a negative RD, the RD is assumed to be positive.
Is positive, RD is negative.

Such word synchronization data is, for example,
This is 10-bit word data DS10 called by a code name of K28.5. FIG. 24 shows a 10-bit word data D called by a code name of K28.5.
S10, and the 10-bit word data DS10
Is "001" when RD is positive when CRD, which is RD based on the word data arranged immediately before, is negative (-).
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 "in which the RD is negative (hereinafter" 001111 1010 "is replaced by + K28). .5
And "110000 0101" is -K2
8.5).

On the other hand, in the field of video signals,
From the viewpoint of diversification of information and high quality of reproduced images
Digitalization, such as video signal information
Digital data formed by digital data
Digital television (HDT)
V) Systems and the like have been proposed. HDTV system
Digital video signal (hereinafter referred to as HD
For example, BTA (broadcasting technology development)
Council), and is formed in accordance with the standards
P_B/ P_RSignal format and G, B, R signal format
There is. Y, P _B/ P_RFor signal format, Y is the luminance signal
Sign, P_BAnd P_RMeans a color difference signal. Ma
In the case of the G, B, and R signal formats, G, B, and R are each green.
Color primary signal, blue primary signal and red primary signal
You.

The HD digital video signal in the Y, P _B / P _R signal format is a signal for interlaced scanning in which each frame image is formed by being divided into a first field image and a second field image. It follows the data format as shown in FIG. The data format shown in FIG. 25 includes a luminance signal data sequence (Y data sequence) representing a luminance signal component in a video signal as shown in FIG. 25A and a video signal sequence as shown in FIG. And a color difference signal data sequence (P _B / P _R data sequence) representing the color difference signal component at
Y data sequence and P _B / P _R data sequence respectively, each of the word data from which it is formed is a 10-bit configuration, also, the word transmission rate, for example, 74.2
5 MBps. FIG. 25A shows a line blanking period in each line period in the Y data series and a portion corresponding to a part of the video data period before and after the line blanking period. FIG. , P _B /
It has been shown a portion corresponding to a portion of the video data period in the line blanking period and before and after in each line period in the P _R data series.

In the Y data series, immediately before a portion corresponding to each video data period, 4 words (3FF (Y), 000 (Y), 000) each having a 10-bit configuration.
(Y), XYZ (Y); 3FF and 000 are represented in hexadecimal, and (Y) represents a word in the Y data series. ) Timing reference code data (S
AV: Start of Active Video)
Immediately after the portion corresponding to each video data period, 10
Four words (3FF (Y), 000) having a bit configuration
(Y), 000 (Y), XYZ (Y)), the timing reference code data (EAV: End of Active Video).
) Is arranged. Similarly, even in the P _B / P _R data sequence, immediately before the portion corresponding to each video data period, 4 words (3FF (C),
000 (C), 000 (C), XYZ (C); 3FF and 000 are hexadecimal, indicating that the (C) the word in P _B / P _R data sequence. ) Consisting of
AV is arranged, and immediately after the portion corresponding to each video data period, 4 words (3FF (C), 000 (C), 000 (C), XYZ) each having a 10-bit configuration are provided.
(C)) is provided. Of course, each of the EAV and SAV in the Y data sequence is arranged in a portion corresponding to each line blanking period in the Y data sequence,
Further, each of the EAV and SAV in P _B / P _R data sequence is arranged in a portion corresponding to the line blanking period at P _B / P _R data sequence CD (10).

[0014]

An HD digital video signal as described above, for example, Y, Y for interlaced scanning is used.
In HD digital video signal of the P _B / P _R signal format is transmitted, a portion where the Y data sequence and the P _B / P _R data sequence, corresponding to the line blanking period, each of EAV and SAV are arranged Are synchronized to form a word multiplexed data sequence that is, for example, 10-bit word string data with a word transmission rate of 74.25 MBps × 2 = 148.5 MBps. The word multiplex data sequence is converted into serial data and transmitted. Therefore, Y, P _B / P
The bit transmission rate for actual transmission of the HD digital video signal in the _R signal format is, for example, 148.5 MB.
ps × 10 = 1.485 Gbps.

As described above, the Y, P
Bit transmission rate of when the transmission of _B / P _R signal format HD digital video signal of, for example, 1.485 Gb
ps, but in the future, not for interlaced scanning, but for progressive scanning in which each frame image is formed without being divided into first and second fields.
Transmission of an HD digital video signal in the Y, P _B / P _R signal format is considered. In this case, the bit transmission rate for transmission is set to Y, P _B /
Twice that of the P _R signal format HD digital video signal,
Therefore, it reaches 1.485 Gbps × 2 = 2.97 Gbps.

That is, Y, P _B / P _R for sequential scanning
In the case of HD digital video signal of the signal format, each of the Y data sequence and P _B / P _R data series, Y, which is a such sequential scan, the HD digital picture signal of P _B / P _R signal format When transmitted, the Y data series and P
_B / P _R data sequence and the word multiplex processing is obtained is subjected, word transmission rate of 148.5 MBps × 2 =
Word multiple data sequence that is 10-bit word sequence data to 297MBps is formed, the word multiple data sequence is to be transmitted is converted into serial data, therefore, Y, P _B / P _R signal format The actual bit transmission rate for transmitting the HD digital video signal is 297 MBps × 10 = 2.97 Gbps.

[0017] Y having a bit transmission rate as high as such 2.97Gbps, P _B / P _R signal format HD
A digital video signal is extremely high-speed compared to before, and therefore, when transmitting, for example, a circuit including a parallel / serial (P / S) conversion unit that can handle serial data having an extremely high bit transmission rate. Elements and circuit elements including a serial / parallel (S / P) converter are required. However, such a circuit element including a P / S converter and a circuit element including an S / P converter that can handle serial data having an extremely high bit transmission rate is a circuit element including a conventional P / S converter. And a circuit element including an S / P converter cannot be used, and it is required to be developed as a new one. A circuit element including such a new P / S converter and an S / P converter A great deal of time and cost will be spent in the development of circuit elements and the like that include.

[0018] Thus, for example, Y, which is a for sequential scanning described above, when transmitting the word sequence data forming the HD digital picture signal of P _B / P _R signal format has already been put into practical use, for example, If a circuit element including a P / S conversion unit and a circuit element including an S / P conversion unit used for digital data transmission by the above-described fiber channel system can be used, a new P / S
A large amount of time and cost required for developing a circuit element including a conversion unit and a circuit element including an S / P conversion unit can be saved,
Are sequentially with scanning Y, the transmission of the word sequence data forming the HD digital picture signal of P _B / P _R signal format, it will be performed with means that can adjust relatively easily.

Further, Y, P _B / P _R for sequential scanning are used.
The transmission of word string data forming a digital video signal such as an HD digital video signal in a signal format is also performed on the transmitting side based on the data to be transmitted.
B / 10B conversion is performed, and for example, the aforementioned K
A transmission method in which word string data including word synchronization data having a predetermined code, such as 28.5, is formed, and the word string data is converted to serial data and transmitted to be transmitted. Is strongly desired from the viewpoint that good transmission quality associated with 8B / 10B conversion can be obtained.

Then, Y, P _B / P for sequential scanning are used.
Word string data forming a digital video signal such as an HD digital video signal in the _R signal format is transmitted on the transmitting side by:
Based on the data to be transmitted, 8B / 10B conversion is performed and, for example, the above-mentioned K28.5,
A word string data including word synchronization data having a predetermined code is formed, and the word string data is converted to serial data and transmitted by a transmission method to be transmitted. P
If transmission can be performed using a circuit element including an / S conversion section and a circuit element including an S / P conversion section, efficient use of digital video signals and expansion of the use range of digital video signals can be achieved. Will be done. Efficient use of digital video signals, expansion of the range of use of digital video signals, and the like, for example, will result in further development of technology in the field of business or household electronic devices.

However, conventionally, on the transmitting side, 8B / 10B based on the data to be transmitted.
A transmission method in which word strings are converted and word string data including word synchronization data having a predetermined code is formed, and the word string data is converted to serial data and transmitted to be transmitted. With
It is sequentially with scanning Y, P _B / P of the word sequence data which forms the digital video signal of the HD digital picture signal or the like of the _R signal format, circuit elements and the S / P converter including existing P / S conversion unit There is no concrete example that realizes a transmission system that can transmit data by using means that can be prepared relatively easily, such as a circuit element that includes. In addition, there is no document or the like that describes a technology related to such a transmission system.

In view of the above, the invention described in the claims of the present application is based on data to be transmitted.
8B / 10B conversion is performed, and word string data including word synchronization data having a predetermined code, such as K28.5, is formed. The word string data is converted to serial data. For example, Y, P, which are used for progressive scanning, are transmitted in such a manner that good transmission quality can be obtained.
_B / P _R signal format of HD digital video signal word sequence data to form a digital video signal as in the data transmission method that will can be transmitted by utilizing a means that can adjust relatively easily and, , A data transmission device in which it is implemented.

[0023]

According to a first aspect of the present invention, there is provided a data transmission method comprising: a word having a predetermined number of bits; The column data is divided by performing a conversion process for each predetermined unit section to obtain a plurality of divided 8-bit word string data, and a predetermined word interval is set for each of the divided 8-bit word string data. And inserting an additional word data group including 8-bit word synchronization data having a preset code,
Forming a plurality of composite 8-bit word string data, 8B / 1
By using a P / S conversion means having a built-in OB conversion means, each of a plurality of composite 8-bit word string data is converted into an 8B / 10B word data.
Performing a conversion to obtain a plurality of composite 10-bit word string data having a portion based on the additional word data group, including a 10-bit word synchronization data having a preset code obtained based on the 8-bit word synchronization data; The composite 10-bit word string data is converted into a plurality of serial data, and each of the plurality of serial data is transmitted for transmission.

In particular, in the data transmission method according to the invention described in claim 2 of the present application, the division by performing the conversion process on the word string data for each predetermined unit division is performed by the predetermined unit division. Is repeatedly and sequentially written to each of the plurality of memory means, and the written unit division is selectively read from each of the plurality of memory means in units of 8 bits.

Further, the data transmission apparatus according to any one of the ninth to eleventh aspects of the present invention provides a data transmission apparatus comprising: Data dividing means for performing division by performing a conversion process for each predetermined unit section to obtain a plurality of divided 8-bit word string data, and a plurality of divided 8-bit word string data obtained from the data dividing means, respectively. Forming a composite 8-bit word string data forming a plurality of composite 8-bit word string data by inserting an additional word data group including 8-bit word synchronization data having a preset code at predetermined word intervals Means, and a plurality of composite 8-bit word string data obtained from the composite 8-bit word string data forming means,
A plurality of composite 10-bit word string data having a portion based on an additional word data group, including 10-bit word synchronization data having a preset code obtained by performing 8B / 10B conversion and based on 8-bit word synchronization data 8B / 10 which converts a plurality of composite 10-bit word string data into a plurality of serial data.
P / S conversion means incorporating B conversion means, 8B / 10B
And transmitting means for transmitting each of the plurality of serial data obtained from the P / S converting means incorporating the converting means.

[0026] In particular, in the data transmission apparatus according to the invention described in claim 10 of the present application, the data dividing means writes each of predetermined unit sections in the word string data sequentially and repeatedly, The written unit section includes a plurality of memory means which are selectively read in units of 8 bits.

[0027] As described above, the data transmission method according to any one of claims 1 to 8 in the claims of the present application, and claims 9 to 9 in the claims of the present application. In the data transmission device according to the invention described in any one of the items up to 11, the word string data in which word data of a predetermined number of bits are continuous,
For example, as in the data transmission method according to the invention described in claim 2 and the data transmission apparatus according to the invention described in claim 10, each of the predetermined unit sections is sequentially assigned to each of the plurality of memory means. While being repeatedly written,
By selectively reading out the written unit section from each of the plurality of memory units in units of 8 bits, a division is performed by performing a conversion process for each predetermined unit section, and a plurality of divided 8 bits Word string data is formed. Then, an additional word data group including 8-bit word synchronization data having a preset code is inserted into each of the obtained plurality of divided 8-bit word string data to form a plurality of composite 8-bit word string data. Each of the plurality of composite 8-bit word string data is subjected to 8B / 10B conversion and P / S conversion by P / S conversion means incorporating 8B / 10B conversion means, thereby obtaining a plurality of composite 10-bit word strings. The formation of word string data and the formation of a plurality of serial data based thereon are performed, and the plurality of serial data are transmitted to be transmitted through a transmission path.

Each of the plurality of composite 10-bit word string data converted into a plurality of serial data includes 10-bit word synchronous data having a preset code. Such 10-bit word synchronization data is, for example, + K28.5 which is the word data DS10 whose RD is positive or -K28.5 which is the word data DS10 whose RD is negative.

Each of the plurality of composite 10-bit word string data transmitted as serial data is as follows:
On the receiving side, 10-bit word synchronization data is to be properly detected as word synchronization data required for processing for reproducing a plurality of divided 8-bit word string data. Also, the 10-bit word string data included in each of the plurality of composite 10-bit word string data is obtained through 8B / 10B conversion, thereby providing good transmission quality.
Therefore, on the receiving side, it is necessary to perform a process for reproducing a plurality of divided 8-bit word string data based on a plurality of received composite 10-bit word string data while obtaining good transmission quality. The data synchronization state assured is ensured.

As described above, a data transmission method according to any one of claims 1 to 8 in the claims of the present application, or claims 9 to 9 in the claims of the present application According to the data transmission apparatus of the present invention, each of a plurality of composite 8-bit word string data into which an additional word data group including 8-bit word synchronization data has been inserted. 8B / 10B conversion and P / S conversion processing, and transmission of a plurality of serial data obtained thereby, reception of a plurality of serial data, and S / S for a plurality of received serial data on the receiving side. P conversion and 10B / 8B conversion processing, for example,
This can be accomplished using integrated circuit devices used for transmitting and receiving digital data under Fiber Channel systems. Therefore, 8B / 10B conversion is performed based on the data to be transmitted, and word string data including word synchronization data having a predetermined code is formed, and the word string data is serialized. The data is transmitted to be transmitted after being converted into data. For example, Y, Y for progressive scanning can be used in a transmission method capable of obtaining good transmission quality.
The word sequence data to form a digital video signal as the P _B / P _R signal format HD digital video signals, so that can be transmitted by utilizing a means that can adjust relatively easily.

[0031]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an embodiment of a data transmission method according to the present invention described in any one of claims 1 to 8 in the claims of the present application. Claim 9 to Claim 11
An example of the data transmission device according to any one of the inventions described above is shown.

In the example shown in FIG. 1, for example, a digital video signal DA (20) is supplied to a data division unit 11, and a digital video signal DB (20) is supplied to a data division unit 12. Digital video signal D
Each of A (20) and DB (20) is, for example, as shown in FIG.
Y formed in accordance with the data format of the as shown in A and B of an HD digital video signals P _B / P _R signal format, each of the word transmission rate, e.g., 10-bit words to 74.25MBps and Y data sequence and the P _B / P _R data sequence which is the column data,
A portion corresponding to the line blanking period in which each EAV and SAV is arranged is synchronized, and 20 bits of word data obtained by parallel multiplexing are successively obtained. Word string data.

In each of the digital video signals DA (20) and DB (20), each part corresponding to each line blanking period has two EAVs.
Four words (3FF (C): 3FF) having a 0-bit configuration
(Y), 000 (C): 000 (Y), 000 (C):
000 (Y) and XYZ (C): XYZ (Y)) and 4 words (3FF (C): 3FF (Y), 00) each having a 20-bit configuration as the SAV.
0 (C): 000 (Y), 000 (C): 000
(Y) and XYZ (C): XYZ (Y)).

A common synchronization signal SYC is supplied to each of the data division units 11 and 12, and the data division unit 11 and the data division unit 12 are placed in a synchronous operation state.

[0035] In the data dividing unit 11, and 74.25MBps word transmission rate based on the 10-bit word sequence data and by the Y data sequence and the P _B / P _R data sequence to 74.25MBps word transmission rate Digital video signal D which is 20-bit word string data
A (20) is divided by performing a conversion process for each line period portion (or frame period portion), and each is divided into two 8-bit word string data having a word transmission rate of 92.8125 MBps. , The divided 8-bit word string data DA (8) O and the divided 8-bit word string data DA (8) E are obtained.

Further, the data dividing unit 12, 74.25 MBps word transmission rate based on the 10-bit word sequence data and by the Y data sequence and the P _B / P _R data sequence to 74.25 MBps word transmission rate
The digital video signal DB (20), which is 20-bit word string data, is divided by performing a conversion process for each line period portion (or frame period portion), and each of them has a word transmission rate of 92.8125 MBps.
Divided into two 8-bit word string data
The bit word string data DB (8) O and the divided 8-bit word string data DB (8) E are obtained.

FIG. 2 shows an example of a specific configuration of the data dividing section 11. In the example shown in FIG. 2, the digital video signal DA having a word transmission rate of 74.25 MBps
(20) is supplied to the data distribution unit 13. Further, a horizontal synchronizing signal SH and a vertical synchronizing signal S for setting a horizontal cycle and a vertical cycle in the digital video signal DV (20).
V, and furthermore, the synchronization signal SYC is transmitted to the control signal forming unit 14.
Supplied to

The control signal forming section 14 is provided with a horizontal synchronizing signal SH.
And a digital video signal D based on the vertical synchronization signal SV.
Control signal ST and digital video signal D synchronized with each line period (or each frame period) in A (20)
A switch control signal SAO synchronized with an odd line period (or an odd frame period) in A (20), and
A switch control signal SAE synchronized with the even line period (or even frame period) of the digital video signal DA (20) is formed.

The control signal ST obtained in the control signal forming section 14 is supplied to the data distribution section 13. The data distribution unit 13 includes four memory units 15A, 15B, and 15C.
And 15D are connected.

Under such circumstances, the data distribution unit 13
Under the control of the control signal ST, the supplied digital video signal DA (20) is stored in the memory sections 15A, 15A for each line period portion (or each frame period portion).
The operation of sequentially distributing to 5B, 15C and 15D is repeated. Thereby, for example, the digital video signal DA (2
0), each odd line period portion (or each odd frame period portion) is sequentially supplied to the memory sections 15A and 15C alternately, and the digital video signal DA
Each even line period part (or each even frame period part) in (20) is sequentially stored in the memory units 15B and 15B.
D is supplied alternately.

A write control signal QW having a frequency of 74.25 MHz obtained from a memory control signal forming section 16 to which a clock pulse signal CA having a frequency of 74.25 MHz is supplied to each of the memory sections 15A to 15D. And a frequency of 74.25 MHz × 5/4 = 92.8125 MH
A read control signal QR as z is supplied. In each of the memory units 15A to 15D, the frequency is set to 74.
The writing of each line period portion (or each frame period portion) of the digital video signal DA (20) according to the writing control signal QW of 25 MHz, and the frequency is set to 92.
The reading of each line period portion (or each frame period portion) of the digital video signal DA (20) is performed according to the read control signal QR of 8125 MHz.

As a result, in the memory units 15A to 15D, as shown in A of FIG. 3 (t represents a lapse of time), each line period portion (or each frame period portion) of the digital video signal DA (20) is ) Are sequentially written to the time 1TL corresponding to one line period (or the time 1TF corresponding to one frame period) in the digital video signal DA (20).
The digital video signal DA is stored in the memory units 15A and 15C.
Each odd line period part (or each odd frame period part) of (20) is written alternately, and each even line period part (or each even frame period part) of the digital video signal DA (20) is written into the memory units 15B and 15D. ) Are written alternately.

At the same time, the memory units 15A and 15C
In accordance with the write control signal QW having a frequency of 74.25 MHz, each odd line period portion (or each odd frame period portion) of the digital video signal DA (20) written therein has a frequency of 92.25 MHz. 812
According to the read control signal QR set to 5 MHz, 2
It takes twice as long and is sequentially read in units of 8 bits (8 bits each). As a result, 8-bit word string data having a word transmission rate of 92.8125 MBps is obtained from the memory unit 15A, which is derived as a read output DA (8) O ′ and is also output from the memory unit 15C. Word transfer rate of 92.8125
8-bit word string data of MBps is obtained, which is derived as the read output DA (8) O '.

In each of the memory sections 15B and 15D, each even-line period portion (or each even-numbered section) of the digital video signal DA (20) written therein in accordance with the write control signal QW having a frequency of 74.25 MHz. Frame period), the frequency is 92.8125 MHz
According to the read control signal QR described above, it takes twice as long as the time of writing and is sequentially read in units of 8 bits (8 bits at a time). As a result, 8-bit word string data with a word transmission rate of 92.8125 MBps is obtained from the memory unit 15B, which is derived as the read output DA (8) E ′ and the memory unit 1B.
Word transmission rate of 92.8125 Mbps from 5D
Is obtained, the following 8-bit word string data is obtained.
It is derived as read output DA (8) E '.

The read output DA (8) O 'from each of the memory sections 15A and 15C is supplied to the selection contacts 17b and 17c of the switch 17 having the movable contact 17a and the selection contacts 17b and 17c, respectively. The read output from each of the memory units 15B and 15D is
Switch 1 with 8a and selection contacts 18b and 18c
8 are supplied to selection contacts 18b and 18c, respectively.

The switch 17 is supplied with a switch control signal SAO from the control signal forming unit 14,
, The movable contact 17a is controlled by the switch control signal SAO, and the selection contacts 17b and 17c
In this state, the digital video signal DA (20) is alternately connected every two line periods (or two frame periods). As a result, as shown in FIG. 3B, the movable contact 17a of the switch 17
The read output DA (8) O 'from each of A and 15C is:
The digital video signal DA (20) is alternately derived for each time 2TL corresponding to two line periods (or time 2TF corresponding to two frame periods). as a result,
From the movable contact 17a of the switch 17, the divided 8-bit word string data DA (8) representing the odd line period portion (or each odd frame period portion) of the digital video signal DA (20) and having a word transmission rate of 92.8125 MBps. ) O is obtained.

The switch 18 is supplied with a switch control signal SAE from the control signal forming unit 14. In the switch 18, the movable contact 18a is controlled by the switch control signal SAE to select the contact 18b. And 18c include 2 in the digital video signal DA (20).
A state is established in which the lines are alternately connected every line period (or two frame periods). As a result, as shown in FIG. 3C, the read output DA (8) from each of the memory units 15B and 15D is applied to the movable contact 18a of the switch 18.
E ′ is alternately derived for each time 2TL corresponding to two line periods (or time 2TF corresponding to two frame periods) in the digital video signal DA (20). As a result, from the movable contact 18 a of the switch 18, the divided 8-bit word string data representing the even line period portion (or each even frame period portion) of the digital video signal DA (20) and having a word transmission rate of 92.8125 MBps. DA (8) E is obtained.

As described above, the digital video signal DA (20), which is 20-bit word string data with a word transmission rate of 74.25 MBps, is applied to the movable contact 17a of the switch 17 and the movable contact 18a of the switch 18.
The odd line period part (or odd frame period part) and the even line period part (or even frame period part) are divided and the word transmission rate is 9
8-bit word string data of 2.8125 MBps (divided 8-bit word string data DA (8) O and DA
(8) It is obtained by being converted to E). And
The divided 8-bit word string data DA (8) O obtained at the movable contact 17a of the switch 17 and the divided 8-bit word string data DA obtained at the movable contact 18a of the switch 18
(8) E is derived from the data division unit 11.

The specific configuration example of the data division unit 12 is the same as the specific configuration example of the data division unit 11 shown in FIG. 2, and a digital video signal DB (20) having a word transmission rate of 74.25 MBps is provided. Are supplied to the data distribution unit corresponding to the data distribution unit 13 in FIG.
The digital video signal DB (20) is connected to the movable contacts of
Is divided into an odd-line period portion (or an odd-frame period portion) and an even-line period portion (or an even-frame period portion), and 8-bit word string data with a word transmission rate of 92.8125 MBps (divide 8 Bit word string data DB (8) O and DB
(8) It is obtained by being converted into E). The divided 8-bit word string data DB (8) O obtained at the movable contact of the switch corresponding to the switch 17 in FIG. 2 and the divided 8-bit word string obtained at the movable contact of the switch corresponding to the switch 18 in FIG. The data DB (8) E
It is derived from the data division unit 12.

The divided 8-bit word string data DA (8) O and DA (8) E derived from the data dividing unit 11 are
Composite 8-bit word string data forming units 20 and 21 respectively
Supplied to Composite 8-bit word string data forming unit 20
, Divided 8-bit word string data DA (8) O
At a predetermined word interval, an additional word data group DWS including 8-bit word synchronization data DEK8 having a preset code is inserted, and the word transmission rate is set to, for example, 92.8125 MBps or 1
The composite 8-bit word string data DZA (8) O of 00.2375 MBps is formed. In the composite 8-bit word string data forming unit 21, 8-bit word synchronization data DEK8 having a preset code is provided at predetermined word intervals in the divided 8-bit word string data DA (8) E. Word data group DW including
S, the word transmission rate is, for example, 92.8.
The composite 8-bit word string data DZA (8) E of 125 MBps or 100.2375 MBps is formed. The additional word data group DWS has a word transmission rate of, for example, 92.8125 MBps or 10
This is 8-bit word string data of 0.2375 MBps.

FIG. 4 shows a specific configuration example of the composite 8-bit word string data forming section 20. In the example shown in FIG. 4, the divided 8-bit word string data DA (8) O having a word transmission rate of 92.8125 MBps is supplied to the data selection / extraction section 23. The data selection / extraction section 23 is composed of a plurality of 8-bit word data including word synchronization data having a preset code from the word data transmission section 24 and has a word transmission rate of 9 bits.
An additional word data group DWS of 2.8125 MBps is also supplied.

Further, a control signal forming unit 25 to which the horizontal synchronizing signal SH is supplied is provided.
, The control signal CW synchronized with the horizontal synchronization signal SH
D and CDS are formed, and the control signal CWD is supplied to the word data transmission unit 24 and the control signal CDS is supplied to the data selection extraction unit 23.

As a result, the word data transmitting section 24
Additional word data group DW according to control signal CWD
S is sent out and supplied to the data selection / extraction section 23. When the control signal CDS is supplied, the data selection / extraction section 23 extracts the additional word data group DWS from the word data transmission section 24 in response to the control signal CDS. The divided 8-bit word string data DA (8) O is extracted and data is selectively extracted, and the divided 8-bit word string data DA (8) O is subjected to a line blanking period (or In a frame blanking period of each frame period), a process of inserting the additional word data group DWS from the word data transmission unit 24 according to the control signal CDS is performed.

The processing of inserting the additional word data group DWS into the divided 8-bit word string data DA (8) O in the data selection / extraction section 23 is, for example, shown in FIG. 5 or FIG. As shown, S which is a timing reference code of a plurality of horizontal synchronization word data arranged in a line blanking period in each line period of the divided 8-bit word string data DA (8) O.
By replacing a plurality of data arranged immediately before AV with an additional word data group DWS, or
The SAV, which is a timing reference code provided in the line blanking period of each line period of the divided 8-bit word string data DA (8) O, is added to the additional word data group D
This is done by replacing with WS. And
The timing of replacing the plurality of horizontal synchronization word data or SAV with the additional word data group DWS is set by the control signal CWD and the control signal CDS. As a result, the data selecting / extracting section 23 adds the additional word data group DWS to the divided 8-bit word string data DA (8) O at a predetermined word interval.
Are inserted, and the composite 8-bit word string data DZA (8) O obtained by inserting
8125 MBps.

The additional word data group DWS having a word transmission rate of 92.8125 MBps from the word data transmitting section 24 includes an 8-bit word synchronous data DEK8 to which a predetermined code is given and an arbitrary 8-bit word data DEX8. In one specific example, the 8-bit word synchronization data DEK
8 has a four-word configuration in which three arbitrary 8-bit word data DEX8 are formed in series.

The 8-bit word synchronization data DEK8 is 1
When converted into 0-bit word data, it is 8-bit word data that becomes the above-described word data DS10. Therefore, when the 8-bit word synchronous data DEK8 is converted to 10-bit word data, it is called by a code name of K28.5, and the CRD, which is the RD of the word data arranged immediately before, is negative (-). When + K
When the CRD, which is the RD of the immediately preceding word data, is positive (+), −K2
8.5. Further, when the arbitrary 8-bit word data DEX8 is converted into 10-bit word data, 1
0-bit word data DXX. X.

Such an additional word data group DW
S is inserted to form the composite 8-bit word string data DZA (8) O.
The portion where S is inserted is as shown in FIG.
In FIG. 7, DDAs 8 form divided 8-bit word string data DA (8) O from the data dividing unit 11.
The bit t represents the bit word data, and the arrow t represents the elapsed time.

FIG. 8 shows another specific configuration example of the composite 8-bit word string data forming section 20. In the example shown in FIG. 8, divided 8-bit word string data DA (8) O having a word transmission rate of 92.8125 MBps is supplied to the switch 27. The switch 27 responds to the control signal CSA from the switch control signal forming unit 28 at predetermined time intervals, for example, in divided 8-bit word string data DA.
(8) Switching is performed for each line period in O.

The switch control signal forming section 28 has a horizontal synchronizing signal SH, a vertical synchronizing signal SV, and a frequency of 10
A clock pulse signal CB having a frequency of 0.2375 MHz is supplied. Then, the switch control signal forming unit 28 divides the control signal CSA according to the horizontal synchronization signal SH and the vertical synchronization signal SV into the divided 8-bit word string data DA (8) O.
, And in accordance with the horizontal synchronization signal SH and the clock pulse signal CB, the control signal CSB is changed to the line period and the clock pulse signal CB in the divided 8-bit word string data DA (8) O. Is formed in synchronization with a period that is an integral multiple of the cycle of

The switch 27 is connected to a memory section 29 and a memory section 30. Under such circumstances, the switch 27
Switches the divided 8-bit word string data DA (8) O by one line period to the memory units 29 and 30 by switching the divided 8-bit word string data DA (8) O for each line period. Alternately feed into 8
The distribution of the bit word string data DA (8) O to the memory unit 29 and the memory unit 30 is performed.

A memory control signal forming unit 31 is provided in association with the memory unit 29 and the memory unit 30.
The memory control signal forming unit 31 has a frequency of 74.25M.
Hz and a frequency of 100.
A clock pulse signal CB of 2375 MHz is supplied. Then, the memory control signal forming unit 31 sets the frequency to 74.25 MH based on the clock pulse signal CA.
A write control signal QW of z × 5/4 = 92.8125 MHz is generated, and a read control signal QR of a frequency of 100.2375 MHz is generated based on the clock pulse signal CB. The read control signal QR is supplied to both the memory unit 29 and the memory unit 30.

Thus, in the memory section 29, the divided 8-bit word string data DA
(8) During the period in which O is supplied, the divided 8-bit word string data DA (8) O has a frequency of 92.8125M.
According to the write control signal QW set to 9 Hz, writing is performed in a state where the word transmission rate is 92.8125 MBps. Also in the memory unit 30, during the period in which the divided 8-bit word string data DA (8) O is supplied through the switch 27, the divided 8-bit word string data DA (8) O is supplied.
(8) O sets the word transmission rate to 92.81 according to the write control signal QW having a frequency of 92.8125 MHz.
The data is written in a state of 25 MBps. Therefore, the word transmission rate of the divided 8-bit word string data DA (8) O in each of the memory unit 29 and the memory unit 30 is set to 9
Writing in a state of 2.8125 MBps is performed alternately by one line period in accordance with switching of the divided 8-bit word string data DA (8) O of the switch 27 for each line period.

The divided 8-bit word string data DA (8) O written in the memory unit 29 in one line period of the divided 8-bit word string data DA (8) O is replaced with the next divided 8-bit word string data DA (8) O. (8) Within one line period of O, the frequency is set to 100.2375M.
In response to the read control signal QR at Hz, 8-bit word string data DZA (8) O 'with a word transmission rate of 100.2375 MBps is read from the memory unit 29 and supplied to the switch 32. Also, the memory unit 30
The divided 8-bit word string data DA (8) O written in one line period in the divided 8-bit word string data DA (8) O also During the line period,
Read control signal Q having a frequency of 100.2375 MHz
Depending on R, the word transmission rate is 100.2375 MB
The data is read out from the memory unit 30 as 8-bit word string data DZA (8) O ′ of ps and supplied to the switch 32. The switch 32 includes an additional word data group DWS composed of a plurality of 8-bit word data including word synchronization data having a preset code from the word data transmission unit 33 and having a word transmission rate of 100.2375 MBps. Is also supplied.

The switch 32 adjusts the word transmission rate from the word data transmitting section 33 to 100.2375 MB according to the control signal CSB from the switch control signal forming section 28.
The word transmission rate read from the memory unit 30 is 100.23.
8-bit word string data DZA with 75 MBps
(8) O ′ and the 8-bit word string data DZA (8) O ′ read from the memory unit 29 at a word transmission rate of 100.2375 MBps are sequentially extracted for each predetermined word period. Thus, switch 3
2, the word transmission rate is 100.2375 MBps
The word transmission rate is set to 100.
Additional word data group DW with 2375 MBps
S, and therefore, a composite 8-bit data obtained by inserting an additional word data group DWS at a predetermined word interval into the divided 8-bit word string data DA (8) O. Word string data DZA
(8) O sets the word transmission rate to 100.2375 MB
It is derived as ps.

The additional word data group DWS with a word transmission rate of 100.2375 MBps from the word data transmitting unit 33 includes an 8-bit word synchronous data DEK8 to which a predetermined code is given and an arbitrary 8-bit word data DEX8. In one specific example, for example, the entirety is formed with 220 words (220 bytes), and the first part and the last part thereof are respectively provided with 8-bit word synchronization data. DE
It is assumed that a 4-word (4-byte) configuration in which three arbitrary 8-bit word data DEX8 are successively formed on K8 is arranged.

The 8-bit word synchronization data DEK8 and the optional 8-bit word data DEX8 are the same as those constituting the additional word data group DWS transmitted from the word data transmission section 24 in the example shown in FIG. . That is, the 8-bit word synchronization data DEK8
Is converted to 10-bit word data to become 10-bit word synchronization data K28.5, and arbitrary 8-bit word data DEX8 is converted to 10-bit word data to convert 10-bit word data DXX. X.

Such an additional word data group DW
The composite 8-bit word string data DZA (8) formed by inserting the S is added to the additional word data group DWS.
Is inserted as shown in FIG. In FIG. 9, DDA 8 is 8-bit word string data DZA (8) O ′ obtained from each of memory units 29 and 30.
Represents each 8-bit word data forming
The arrow t indicates the elapsed time.

The specific configuration example of the composite 8-bit word string data forming section 21 is the same as the specific configuration example of the composite 8-bit word string data forming section 20 shown in FIG. 4 or FIG. Word transmission rate from 9
The divided 8-bit word string data DA (8) E of 2.8125 MBps is supplied to the data selection and extraction unit 23 in FIG.
8 or the switch corresponding to the switch 27 in FIG. 8 and supplied to the data selection / extraction unit corresponding to the data selection / extraction unit 23 in FIG. 4 or the switch 32 in FIG. From the switch, divided 8-bit word string data DA (8) E
The composite 8-bit word string data DZA (8) E obtained by inserting the additional word data group DWS at a predetermined word interval has a word transmission rate of 92.8125 MBps, or It is derived assuming that the word transmission rate is 100.2375 MBps.

The divided 8-bit word string data DB (8) O and DB (8) derived from the data dividing unit 12
E is supplied to the composite 8-bit word string data forming units 34 and 35, respectively. In the composite 8-bit word string data forming unit 34, the divided 8-bit word string data DB
(8) An additional word data group DWS including 8-bit word synchronization data DEK8 having a preset code is inserted into O at a predetermined word interval, and the word transmission rate is set to, for example, 92.8125 MBps. Alternatively, composite 8-bit word string data DZB (8) O of 100.2375 MBps is formed. Also, composite 8
In the bit word string data forming unit 35, the divided 8-bit word string data DB (8) E is added at predetermined word intervals and includes 8-bit word synchronization data DEK8 having a preset code. By inserting the word data group DWS, the word transmission rate is set to, for example, 9
2.8125MBps or 100.2375MBp
The composite 8-bit word string data DZB (8) E is formed as s. The additional word data group DWS is 8-bit word string data having a word transmission rate of, for example, 92.8125 MBps or 100.2375 MBps.

Composite 8-bit word string data forming unit 34
Has a specific configuration example similar to that of the composite 8-bit word string data forming unit 20 shown in FIG. 4 or FIG. 8, and the word transmission rate from the data division unit 12 is 92.8125 Mbps. The divided 8-bit word string data DB (8) O to be converted is stored in a data selection and extraction unit corresponding to the data selection and extraction unit 23 in FIG.
8 is supplied to a switch corresponding to the switch 27 in FIG. 4 and is supplied from the data selection / extraction unit corresponding to the data selection / extraction unit 23 in FIG. 4 or the switch corresponding to the switch 32 in FIG.
The composite 8-bit word string data DZB (8) 0, which is obtained by inserting the additional word data group DWS at a predetermined word interval into B (8) O, sets the word transmission rate to, for example, 92 0.8125 MBps or 100.2375 MBps.

Further, the specific configuration example of the composite 8-bit word sequence data forming unit 35 is the same as the specific configuration example of the composite 8-bit word sequence data forming unit 20 shown in FIG. 4 or FIG. The divided 8-bit word string data DB (8) E having a word transmission rate of 92.8125 MBps from the data dividing unit 12 is used as a data selecting / extracting unit corresponding to the data selecting / extracting unit 23 in FIG. 4 or a switch in FIG. The divided 8-bit word string data DB (8) E is supplied to the switch corresponding to 27 and supplied from the data selection / extraction unit corresponding to the data selection / extraction unit 23 in FIG. 4 or the switch corresponding to the switch 32 in FIG. A composite 8-bit obtained by inserting an additional word data group DWS at a predetermined word interval Over de sequence data DZB (8) E is,
The word transmission rate is, for example, 92.8125 MBps
Alternatively, it is derived as 100.2375 MBps.

The composite 8-bit word string data forming unit 20,
The word transmission rates obtained from 21, 34 and 35 are:
For example, 92.8125 MBps or 100.23
Composite 8-bit word string data DZA with 75 MBps
(8) O, DZA (8) E, DZB (8) O and DZB
(8) E is supplied to P / S converters 36, 37, 38, and 39 with built-in 8B / 10B converters, respectively.

P / S converter 36 with built-in 8B / 10B converter
, The composite 8-bit word string data DZA (8)
O is subjected to 8B / 10B conversion in which 8 bits forming each word in the O are divided, and each of the divided 8 bits is sequentially converted into 10-bit data according to a conversion table prepared in advance. The word transmission rate based on the composite 8-bit word string data DZA (8) O is, for example, 92.8125 MBps or 100.
Form composite 10-bit word string data DZA (10) O of 2375 MBps. At that time, the 8-bit word synchronization data DEK8 is converted into K28.5 which is 10-bit word synchronization data, and any 8-bit word data DEX8 is converted to 10-bit word data DXX. X, and the 8-bit word data DDA8 is converted to 10-bit word data DDA10.

Therefore, 8-bit word string data DZA
(8) Additional word data group DWS inserted in O
Is, for example, as shown in FIG. 7, the composite 10-bit word string data DZA (10) O has a part based on the additional word data group DWS as shown in FIG. Is done. A portion based on the additional word data group DWS in the composite 10-bit word string data DZA (10) O includes K2
8.5 would be included. When the additional word data group DWS inserted into the 8-bit word string data DZA (8) O is, for example, as shown in FIG. 9, the composite 10-bit word string data DZA (1)
0) O is the additional word data group DW
The part based on S is as shown in FIG. Such composite 10-bit word string data DZA (1
0) The portion based on the additional word data group DWS in O will include two K28.5.

In addition to the above, a P with a built-in 8B / 10B converter
In the / S converter 36, the 8-bit word string data D
P / which converts parallel data into serial data into composite 10-bit word string data DZA (10) O having a word transmission rate of 92.8125 MBps or 100.2375 MBps, obtained by 8B / 10B conversion on ZA (8) O. After performing the S conversion, the bit transmission rate based on the composite 10-bit word string data DZA (10) O is set to, for example, 92.8125 MBps × 10
= 92.125Mbps or 100.2375M
The serial data DSAO having Bps × 10 ≒ 1.002 Gbps is obtained, and the serial data DSAO is supplied to the transmission unit 40.

The transmitting section 40 is provided with the serial data DSAO
Is transmitted through a data transmission line formed using a coaxial cable or an optical fiber, for example, an electric signal suitable for the data transmission line formed using a coaxial cable, or an optical fiber is used. The signal is converted into a transmission signal SAO which is an optical signal suitable for the data transmission path formed and transmitted. Thereby, transmission of the serial data DSAO is performed.

P / S converter 37 with built-in 8B / 10B converter
, The composite 8-bit word string data DZA (8)
E is subjected to an 8B / 10B conversion in which each of the 8 bits forming each word in the E is divided, and each of the divided 8 bits is sequentially converted into 10-bit data according to a conversion table prepared in advance. The word transmission rate based on the composite 8-bit word string data DZA (8) E is, for example, 92.8125 MBps or 100.
Form composite 10-bit word string data DZA (10) E of 2375 MBps. At that time, the 8-bit word synchronization data DEK8 is converted into K28.5 which is 10-bit word synchronization data, and any 8-bit word data DEX8 is converted to 10-bit word data DXX. X, and the 8-bit word data DDA8 is converted to 10-bit word data DDA10.

The composite 10-bit word string data DZA (1
0) The portion based on the additional word data group DWS in E is, for example, shown in FIG. 10 or FIG.
The same as the portion based on the additional word data group DWS in the composite 10-bit word string data DZA (10) O, the composite 10-bit word string data DZA (10)
The portion based on the additional word data group DWS in E includes one or two K28.5.

In the P / S converter 37 with built-in 8B / 10B converter, 8-bit word string data DZA
(8) The word transmission rate obtained by the 8B / 10B conversion for E is 92.8125 MBps or 10
Bit transmission based on the composite 10-bit word string data DZA (10) E by performing P / S conversion on the composite 10-bit word string data DZA (10) E of 0.2375 MBps to convert parallel data into serial data The rate is, for example, 92.8125 MBps × 10 = 92
8.125Mbps or 100.2375Mbps
× 10 ≒ 1.002 Gbps serial data DS
AE is obtained, and the serial data DSAE is supplied to the transmission unit 41.

The transmitting section 41 transmits the serial data DSAE
Is transmitted through a data transmission line formed using a coaxial cable or an optical fiber, for example, an electric signal suitable for the data transmission line formed using a coaxial cable, or an optical fiber is used. The signal is converted into a transmission signal SAE which is an optical signal suitable for the data transmission path formed and transmitted. Thereby, transmission of the serial data DSAE is performed.

P / S converter 38 with built-in 8B / 10B converter
, The composite 8-bit word string data DZB (8)
O is subjected to an 8B / 10B conversion in which 8 bits forming each word in the O are divided, and each of the divided 8 bits is sequentially converted into 10-bit data according to a conversion table prepared in advance. The word transmission rate based on the composite 8-bit word string data DZB (8) O is, for example, 92.8125 MBps or 100.
Form composite 10-bit word string data DZB (10) O of 2375 MBps. At that time, the 8-bit word synchronization data DEK8 is converted into K28.5 which is 10-bit word synchronization data, and any 8-bit word data DEX8 is converted to 10-bit word data DXX. X, and the 8-bit word data DDA8 is converted to 10-bit word data DDA10.

Composite 10-bit word string data DZB (1
0) The portion based on the additional word data group DWS in O is, for example, shown in FIG. 10 or FIG.
The same as the portion based on the additional word data group DWS in the composite 10-bit word string data DZA (10) O, the composite 10-bit word string data DZB (10)
The portion based on the additional word data group DWS in O will include one or two K28.5.

In the P / S converter 38 with a built-in 8B / 10B converter, 8-bit word string data DZB
(8) The word transmission rate obtained by the 8B / 10B conversion for O is 92.8125 MBps or 10
Bit transmission based on the composite 10-bit word string data DZB (10) O by performing P / S conversion for converting parallel data to serial data on the composite 10-bit word string data DZB (10) O having a rate of 0.2375 MBps The rate is, for example, 92.8125 MBps × 10 = 92
8.125Mbps or 100.2375Mbps
× 10 ≒ 1.002 Gbps serial data DS
BO is obtained, and the serial data DSBO is supplied to the transmitting unit 42.

The transmission section 42 is provided with serial data DSBO
For example, in order to transmit through a data transmission line formed using a coaxial cable or an optical fiber, an electric signal suitable for the data transmission line formed using a coaxial cable, or an optical fiber is used. The signal is converted into a transmission signal SBO which is an optical signal suitable for the data transmission path formed and transmitted. Thus, transmission of the serial data DSBO is performed.

Further, in the P / S converter 39 with built-in 8B / 10B converter, the composite 8-bit word string data DZ
B (8) E is divided into 8 bits forming each word, and each of the divided 8 bits is sequentially converted to 10-bit data according to a conversion table prepared in advance. 10B conversion is performed to form composite 10-bit word string data DZB (10) E having a word transmission rate of, for example, 92.8125 MBps or 100.2375 MBps based on the composite 8-bit word string data DZB (8) E. . At that time, the 8-bit word synchronization data DEK8 is converted into K28.5 which is 10-bit word synchronization data, and any 8-bit word data DEX8 is converted to 10-bit word data DXX.
X, and further converted to 8-bit word data DDA8
Is converted to 10-bit word data DDA10.

The composite 10-bit word string data DZB (1
0) The portion based on the additional word data group DWS in E is, for example, shown in FIG. 10 or FIG.
The same as the portion based on the additional word data group DWS in the composite 10-bit word string data DZA (10) O, the composite 10-bit word string data DZB (10)
The portion based on the additional word data group DWS in E includes one or two K28.5.

In the P / S converter 39 with built-in 8B / 10B converter, the 8-bit word string data DZB
(8) The word transmission rate obtained by the 8B / 10B conversion for E is 92.8125 MBps or 10
Bit transmission based on the composite 10-bit word string data DZB (10) O by performing P / S conversion for converting the parallel data into serial data to the composite 10-bit word string data DZB (10) E of 0.2375 MBps The rate is, for example, 92.8125 MBps × 10 = 92
8.125Mbps or 100.2375Mbps
× 10 ≒ 1.002 Gbps serial data DS
BE is obtained, and the serial data DSBE is supplied to the transmission unit 43.

The transmitting section 43 is provided with the serial data DSBE
Is transmitted through a data transmission line formed using a coaxial cable or an optical fiber, for example, an electric signal suitable for the data transmission line formed using a coaxial cable, or an optical fiber is used. The transmission signal SBE is converted into a transmission signal SBE which is an optical signal suitable for the data transmission path formed and transmitted. Thus, transmission of the serial data DSBE is performed.

In the data transmission apparatus shown in FIG. 1 as described above, the P / S converter 3 with a built-in 8B / 10B converter
Each of 6-39 and each of the transmitters 40-43 have a combined 8-bit word string data DZA (8) O, DZA (8) E having a word transmission rate of, for example, 92.8125 MBps or 100.2375 MBps. , DZB
(8) O or DZB (8) E is subjected to 8B / 10B conversion to increase the word transmission rate to 92.8125 Mbps.
Alternatively, composite 10-bit word string data DZA (10) O, DZA (10) with 100.2375 MBps
E, DZB (10) O or DZB (10) E, and the composite 10-bit word string data DZA
(10) O / DZA (10) E, P / S conversion is performed on DZB (10) O or DZB (10) E, and composite 10-bit word string data DZA (10) O, DZA (10)
E, DZB (10) O or DZB (10) E is converted to serial data DSAO, D at a bit transmission rate of 928.225 Mbps or about 1.002 Gbps.
It is converted to SAE, DSBO or DSBE and transmitted.

Therefore, each of the P / S converters 36 to 39 having the built-in 8B / 10B converter and the transmitter 40
To 43 can be configured by effectively utilizing an integrated circuit (IC) element provided for transmitting digital data under a fiber channel system or the like. Therefore, word string data including word synchronization data is formed based on the data to be transmitted, and the word string data is subjected to 8B / 10B conversion and converted to serial data for transmission. With two transmission systems, two Y and P _B
The / P _R signal format word sequence data forming the HD digital picture signal as a digital image signal DA (20) and DB (20) of, be transmitted using a means which can adjust relatively easily You can do it.

FIG. 12 shows another example of the data transmission method according to the invention described in any one of claims 1 to 8 in the claims of the present application. 13 shows another example of the data transmission device according to the invention described in any one of claims 9 to 11.

In the example shown in FIG. 12, for example,
The digital video signal DV (20) is supplied to the data division unit 51. Digital video signal DV (20) is formed, for example, according to the data format of the as shown in A and B in FIG. 25, are sequentially with scanning Y, P _B
/ P _R signal format, each of which has a word transmission rate of, for example, 148.5M
10-bit word sequence data and by Y data sequence and Bps and the P _B / P _R data series, parallel multiplexed Moto the portion corresponding to the line blanking period EAV and SAV was arranged each was allowed to synchronization The 20-bit word data obtained by the above-described operation is a series of 20-bit word string data having a word transmission rate of 148.5 MBps.

In such a digital video signal DV (20), each part corresponding to each line blanking period has a 20-bit EAV.
Word (3FF (C): 3FF (Y), 000 (C):
000 (Y), 000 (C): 000 (Y), and X
YZ (C): XYZ (Y)) and SA
4 words each having a 20-bit configuration (3F
F (C): 3FF (Y), 000 (C): 000
(Y), 000 (C): 000 (Y), and XYZ
(C): XYZ (Y)).

[0094] In the data dividing unit 51, a word transmission rate based on the 10-bit word sequence data and by the Y data sequence and the P _B / P _R data sequence to 148.5MBps word transmission rate and 148.5MBps Digital video signal D which is 20-bit word string data
V (20) is divided by performing a conversion process for each line period portion (or frame period portion), and each is divided into four 8-bit word string data having a word transmission rate of 92.8125 MBps. , Divided 8-bit word string data DF (8) O, DF (8) E, DS
(8) Obtain O and DS (8) E.

FIG. 13 shows a specific configuration example of the data dividing section 51. In the example shown in FIG. 13, a digital video signal D having a word transmission rate of 148.5 MBps is used.
V (20) is supplied to the data distribution unit 52. Also,
The horizontal synchronizing signal SH and the vertical synchronizing signal SV for setting the horizontal cycle and the vertical cycle in the digital video signal DV (20) are supplied to the control signal forming section 53.

The control signal forming section 53 outputs the horizontal synchronizing signal SH
And a digital video signal D based on the vertical synchronization signal SV.
The control signal ST and the digital video signal D synchronized with each line period (or each frame period) in V (20)
Switch control signal SVA synchronized with every other odd line period (or every other odd frame period) in V (20), synchronized with every other even line period (or every other even frame period) A switch control signal SVB, a switch control signal SVC synchronized with every other odd line period (or other every other odd frame period), and another every even line period (or another every other odd line period). The switch control signal SVD is synchronized with every other even frame period.

The control signal ST obtained in the control signal forming section 53 is supplied to the data distribution section 52. The data distribution unit 52 includes eight memory units 54A, 54B, 54
C, 54D, 54E, 54F, 54G and 54H are connected.

Under such circumstances, the data distribution unit 52
Under the control of the control signal ST, the supplied digital video signal DV (20) is stored in the memory units 54A to 54A for each line period part (or each frame period part).
The operation of sequentially distributing the data to 4H is repeated. Thereby, for example, every other odd line period portion (or every other odd frame period portion) in the digital video signal DV (20) is sequentially supplied to the memory units 54A and 54E alternately, and the digital video signal DV In (20), every other even-line period (or every other even-frame period) is sequentially stored in the memory units 54B and 54B.
F and the digital video signal DV (20)
Are alternately supplied to the memory units 54C and 54G alternately in sequence, and the other odd line period portions (or other odd frame period portions) are alternately supplied to the digital video signal DV (20). Every other even line period part (or every other even frame period part) is sequentially and alternately supplied to the memory units 54D and 54H.

A write control signal QW having a frequency of 148.5 MHz obtained from a memory control signal forming section 55 to which a clock pulse signal CC having a frequency of 148.5 MHz is supplied to each of the memory sections 54A to 54H. And the frequency is 148.5 MHz × 5/8 = 92.8125 MH
A read control signal QR as z is supplied.

In the memory units 54A to 54H, as shown in A of FIG. 14 (t represents a lapse of time), each line period portion (or each frame period) of the digital video signal DV (20) is Part), but the frequency is 1
In accordance with the write control signal QW of 48.5 MHz, a state in which the digital video signal DV (20) is sequentially written in a time 1TL corresponding to one line period (or a time 1TF corresponding to one frame period) is repeated. As a result, every other odd line period portion (or every other odd frame period portion) of the digital video signal DV (20) is alternately written into each of the memory portions 54A and 54E, and the memory portions 54B and 54F.
, Every other even-line period portion (or every other even-frame period portion) of the digital video signal DV (20) is written alternately, and the digital video signal DV (20) is stored in each of the memory units 54C and 54G. (20) Every other odd line period portion (or every other odd frame period portion) is written alternately, and the digital video signal DV (20) is stored in each of the memory portions 54D and 54H. ) Other alternate even line period portions (or other alternate even frame period portions) are alternately written.

At the same time, the memory units 54A and 54E
Of the digital video signal DV (20) written according to the write control signal QW having a frequency of 148.5 MHz, every other odd line period portion (or every other odd frame period portion) 9
In accordance with the write control signal QR of 2.8125 MHz, the data is sequentially read in units of 8 bits (8 bits at a time), taking four times as long as writing, and the frequency is set to 148 in each of the memory units 54B and 54F. A digital video signal DV (20) written in accordance with the write control signal QW having a frequency of 0.5 MHz has a frequency of 92.8125 MHz for every other even line period portion (or every other even frame period portion). In accordance with the write control signal QR, it takes four times as long as the time of writing and is sequentially read in units of 8 bits (8 bits at a time), and the memory unit 54C
And 54G respectively, the frequency is 148.5 MHz
The other odd line period portion (or other odd frame period portion) of the digital video signal DV (20) written according to the write control signal QW has a frequency of 92.8125 MHz. According to the write control signal QR to be written, the data is sequentially read in units of 8 bits (8 bits at a time), taking four times as long as the time of writing, and the frequency is set to 148.5 MHz in each of the memory units 54D and 54H. The other alternate line period portion (or other even frame period portion) of the digital video signal DV (20) written according to the write control signal QW has a frequency of 92.8125M.
In accordance with the write control signal QR which is set to Hz, it takes 4 times as long as the write time, and the unit is 8 bits (8 bits each).
Read sequentially.

As a result, from each of the memory units 54A and 54E, the word transmission rate based on every other odd line period portion (or every other odd frame period portion) of the digital video signal DV (20) is set to 92. .812
8-bit word string data of 5 MBps is obtained, which is derived as a read output DVF (8) O, and from each of the memory units 54B and 54F, every other even number of the digital video signal DV (20) is output. Based on the line period portion (or every other even frame period portion), 8-bit word string data with a word transmission rate of 92.8125 MBps is obtained, which is derived as a read output DVF (8) E. , Memory unit 54
C and 54G, the digital video signal DV (2
0) Based on every other odd line period portion (or every other odd frame period portion), 8-bit word string data having a word transmission rate of 92.8125 MBps can be obtained. It is read output D
VS (8) O, and the memory unit 54D
And 54H, the digital video signal DV (2
0) 8-bit word string data having a word transmission rate of 92.8125 MBps based on another every other even line period portion (or another every other even frame period portion) is obtained; It is read output D
Derived as VS (8) E.

The readout output DVF (8) O derived from each of the memory units 54A and 54E is supplied to select contacts 56b and 56c of a switch 56 having a movable contact 56a and select contacts 56b and 56c, respectively. Readout output DV derived from each of memory units 54B and 54F
F (8) E is supplied to the selection contacts 57b and 57c of the switch 57 having the movable contact 57a and the selection contacts 57b and 57c, respectively. Memory units 54C and 54G
Are output to the selection contacts 58b and 58c of the switch 58 having the movable contact 58a and the selection contacts 58b and 58c, respectively. The read output DVS (8) E derived from each of the memory units 54D and 54H is supplied to the movable contact 59
a having a and select contacts 59b and 59c
Are supplied to the selection contacts 59b and 59c, respectively.

The switch 56 is supplied with the switch control signal SVA from the control signal forming unit 53,
The switch control signal SV from the control signal forming unit 53
B is supplied to the switch 58 and the control signal forming unit 53
Switch control signal SVC from the switch 5
9 includes a switch control signal S from the control signal forming unit 53.
VD is supplied.

The switch 56 has its movable contact 5
6a is controlled by the switch control signal SVA,
The digital video signal DV is connected to the selection contacts 56b and 56c.
In (20), a state is established in which the lines are alternately connected every four line periods (or four frame periods). As a result, as shown in FIG. 14B, the read output DVF (8) O from each of the memory units 54A and 54E is applied to the movable contact 56a of the switch 56 by the digital video signal DV.
Time 4TL corresponding to four line periods in (20)
(Or 4 TFs corresponding to four frame periods) are derived alternately. As a result, from the movable contact 56a of the switch 56, the word transmission rate, which indicates every other odd line period portion (or every other odd frame period portion) of the digital video signal DV (20), is 9
Divided 8-bit word string data DF (8) O having 2.8125 MBps is obtained.

The switch 57 has its movable contact 5
7a is controlled by the switch control signal SVB,
The digital video signal DV is connected to the selection contacts 57b and 57c.
In (20), a state is established in which the lines are alternately connected every four line periods (or four frame periods). As a result, as shown in FIG. 14C, the read output DVF (8) E from each of the memory units 54B and 54F is applied to the movable contact 57a of the switch 57 by the digital video signal DV.
Time 4TL corresponding to four line periods in (20)
(Or 4 TFs corresponding to four frame periods) are derived alternately. As a result, from the movable contact 57a of the switch 57, the word transmission rate, which represents every other even line period portion (or every other even frame period portion) of the digital video signal DV (20), is 9
The divided 8-bit word string data DF (8) E of 2.8125 MBps is obtained.

The switch 58 has its movable contact 5
8a is controlled by the switch control signal SVC,
The digital video signal DV is connected to the selection contacts 58b and 58c.
In (20), a state is established in which the lines are alternately connected every four line periods (or four frame periods). As a result, as shown in FIG. 14D, the read output DVS (8) O from each of the memory units 54C and 54G is applied to the movable contact 58a of the switch 58 by the digital video signal DV.
Time 4TL corresponding to four line periods in (20)
(Or 4 TFs corresponding to four frame periods) are derived alternately. As a result, from the movable contact 58a of the switch 58, the word transmission rate, which represents the other odd line period portion (or other every other odd frame period portion) of the digital video signal DV (20), is changed to 92. .8125 MBps divided 8-bit word string data DS (8) O is obtained.

Further, in the switch 59, the movable contact 59a is controlled by the switch control signal SVD, and the selection contacts 59b and 59c are supplied to the digital video signal DV (20) for four line periods (or four frame periods). ) Alternately. As a result, the movable contact 59a of the switch 59 is
As shown at E, the read output DVS (8) E from each of the memory units 54D and 54H takes the time 4 corresponding to the 4-line period in the digital video signal DV (20).
TL (or 4TF corresponding to 4 frame periods)
Are derived alternately. As a result, from the movable contact 59a of the switch 59, the word transmission rate, which represents another alternate even line period portion (or another alternate even frame period portion) of the digital video signal DV (20), is changed to 92. .8125 MBps divided 8-bit word string data DS (8) E is obtained.

Thus, the movable contact 56a of the switch 56, the movable contact 57a of the switch 57, and the switch 58
And the movable contact 59a of the switch 59
a includes a digital video signal D which is 20-bit word string data having a word transmission rate of 148.5 MBps.
V (20) is the other odd line period portion (or every other odd frame period portion), every other even line period portion (or every other even frame period portion), Every other odd line period part (or every other odd frame period part) and every other even line period part (or every other even frame period part) At the same time, 8-bit word string data (divided 8-bit word string data DF) with a word transmission rate of 92.8125 MBps
(8) O, DF (8) E, DS (8) O and DS (8)
E). The divided 8-bit word string data DF (8) O obtained at the movable contact 56a of the switch 56 and the movable contact 57a of the switch 57
, The divided 8-bit word string data DF (8) E,
Divided 8-bit word string data DS (8) O obtained at the movable contact 58a of the switch 58 and divided 8-bit word string data D obtained at the movable contact 59a of the switch 59
S (8) E is derived from the data division unit 51.

Divided 8-bit word string data DF (8) O, DF (8) E, DS derived from data dividing section 51
(8) O and DS (8) E) are supplied to the composite 8-bit word string data forming units 60, 61, 62 and 63, respectively.

In the composite 8-bit word string data forming section 60, the divided 8-bit word string data DF (8) O
At a predetermined word interval, an additional word data group DWS including 8-bit word synchronization data DEK8 having a preset code is inserted, and a composite 8-bit word having a word transmission rate of, for example, 100 MBps is inserted. The column data DZF (8) O is formed. In the composite 8-bit word string data forming unit 61, the divided 8-bit word string data DF (8) E includes 8-bit word synchronization data DEK8 having a preset code at predetermined word intervals. Additional word data group D
WS, the word transmission rate is set to, for example, 100
Composite 8-bit word string data DZF with MBps
(8) Form E. In the composite 8-bit word string data forming unit 62, the divided 8-bit word string data DS
(8) An additional word data group DWS including 8-bit word synchronization data DEK8 having a preset code is inserted into O at a predetermined word interval, and the word transmission rate is set to, for example, 100 MBps. Form composite 8-bit word string data DZS (8) O. Further, in the composite 8-bit word string data forming section 63, the divided 8-bit word string data DS (8) E is spaced apart by a predetermined word interval and the 8-bit word synchronization data DEK8 having a preset code. Is inserted to form composite 8-bit word string data DZS (8) E having a word transmission rate of, for example, 100 MBps.

The additional word data group DWS is 8-bit word string data having a word transmission rate of, for example, 100 MBps.

FIG. 15 shows a specific configuration example of the composite 8-bit word string data forming section 60. In the example illustrated in FIG. 15, divided 8-bit word string data DF (8) O having a word transmission rate of 92.8125 MBps is supplied to the switch 65. The switch 65 responds to the control signal CSA from the switch control signal forming unit 66 for every predetermined period, for example, divided 8-bit word string data DF.
(8) Switching is performed for each line period in O.

The switch control signal forming section 66 stores the horizontal synchronizing signal SH, the vertical synchronizing signal SV, and the frequency of 100.
A clock pulse signal CD of MHz is supplied. Then, the switch control signal forming section 66 outputs the horizontal synchronization signal S
H and the vertical synchronization signal SV, the control signal CSA is
The divided 8-bit word string data DF (8) O is formed so as to be synchronized with the line period, and the control signal CSB is converted into the divided 8-bit word string data DF () according to the horizontal synchronization signal SH and the clock pulse signal CD. 8) It is formed so as to be synchronized with the line period at O and a period that is an integral multiple of the cycle of the clock pulse signal CD.

The switch 65 is connected to a memory section 67 and a memory section 68. Under such circumstances, the switch 65
Switches the divided 8-bit word string data DF (8) O for each line period by the switching between the divided 8-bit word string data DF (8) O for each line period. Alternately feed into 8
The distribution of the bit word string data DF (8) O to the memory unit 67 and the memory unit 68 is performed.

Further, a memory control signal forming section 69 is provided in association with the memory section 67 and the memory section 68.
The memory control signal forming section 69 has a frequency of 148.5M.
Hz clock pulse signal CC and frequency 100M
Hz. Then, the memory control signal forming unit 69 sets the frequency to 148.5 MHz × 5/8 based on the clock pulse signal CC.
= 92.8125 MHz, and a read control signal QR having a frequency of 100 MHz based on the clock pulse signal CD.
The write control signal QW and the read control signal QR are
And 68.

Thus, in the memory section 67, the divided 8-bit word string data DF
(8) During the period in which O is supplied, the divided 8-bit word string data DF (8) O has a frequency of 92.8125M.
According to the write control signal QW set to 9 Hz, writing is performed in a state where the word transmission rate is 92.8125 MBps. Also in the memory section 68, during the period in which the divided 8-bit word string data DF (8) O is supplied through the switch 65, the divided 8-bit word string data DF (8) O is supplied.
(8) O sets the word transmission rate to 92.81 according to the write control signal QW having a frequency of 92.8125 MHz.
The data is written in a state of 25 MBps. Accordingly, the word transmission rate of the divided 8-bit word string data DF (8) O in each of the memory units 67 and 68 is set to 92.812.
Writing in the state of 5 MBps is performed alternately by one line period in accordance with switching of the divided 8-bit word string data DF (8) O of the switch 65 for each line period.

The divided 8-bit word string data DF (8) O written in the memory section 67 during one line period of the divided 8-bit word string data DF (8) O is replaced with the next divided 8-bit word string data DF (8) O. (8) During one line period in O, the word transmission rate is set to 100 in accordance with the read control signal QR having a frequency of 100 MHz.
8-bit word string data DZF (8) with MBps
O ′ is read from the memory unit 67 and the switch 70
Supplied to The divided 8-bit word string data DF (8) written in one line period in the divided 8-bit word string data DF (8) O is stored in the memory unit 68.
O is also the next divided 8-bit word string data DF (8)
In one line period in O, the frequency is set to 100 MHz.
8 bit word string data DZF having a word transmission rate of 100 MBps in accordance with a read control signal QR as z.
(8) The data is read from the memory unit 68 as O 'and supplied to the switch 70. The switch 70 also supplies an additional word data group DWS composed of a plurality of 8-bit word data including word synchronization data having a preset code and having a word transmission rate of 100 MBps from the word data transmission unit 71. Is done.

The switch 70 is read from the additional word data group DWS and the memory unit 68 at a word transmission rate of 100 MBps from the word data transmitting unit 71 in response to the control signal CSB from the switch control signal forming unit 66. Set the word transmission rate to 100 MBps 8
The bit word string data DZF (8) O ′ and the word transmission rate read from the memory 67 are 100 MB.
Each of the 8-bit word string data DZF (8) O ′ having ps is sequentially extracted for a predetermined word period. Thereby, the word transmission rate is set to 100M from the switch 70.
8-bit word string data DZF (8) O 'to be Bps
At a predetermined word interval, the word transmission rate is set to 1
One formed by inserting an additional word data group DWS of 00 MBps, therefore, is obtained by inserting an additional word data group DWS at predetermined word intervals into divided 8-bit word string data DF (8) O. Composite 8-bit word string data DZF (8)
O is derived assuming a word transmission rate of 100 MBps.

An additional word data group DWS with a word transmission rate of 100 MBps from the word data transmitting section 71 is composed of 8-bit word synchronization data DEK8 to which a predetermined code is given and arbitrary 8-bit word data DEX8. In one specific example, for example, the entirety is formed with 220 words (220 bytes), and the first part and the last part thereof are added to the 8-bit word synchronization data DEK8, respectively. It is assumed that a 4-word (4-byte) configuration in which three arbitrary 8-bit word data DEX8 are successively formed.

When the 8-bit word synchronization data DEK8 and any 8-bit word data DEX8 are converted into 10-bit word data, the 10-bit word synchronization data K
28.5, and arbitrary 8-bit word data DEX8
Is converted to 10-bit word data, the 10-bit word data DXX. X.

Such an additional word data group DW
S is inserted, and the composite 8-bit word string data DZF (8) O is formed by the additional word data group DW
The portion where S is inserted is as shown in FIG. In FIG. 16, the DDA 8 includes memory units 67 and 6
8 bit word string data DZF obtained from each of 8
(8) Each 8-bit word data forming O 'is represented, and an arrow t represents elapsed time.

The composite 8-bit word string data forming unit 61,
The specific configuration examples 62 and 63 are the same as the specific configuration example of the composite 8-bit word string data forming unit 60 shown in FIG.

In the specific configuration example of the composite 8-bit word string data forming section 61, the divided 8-bit word string data DF (8) E having the word transmission rate of 92.8125 MBps from the data dividing section 51 is obtained. 15 is supplied to a switch corresponding to the switch 65 in FIG. 15, and from the switch corresponding to the switch 70 in FIG. The composite 8-bit word string data DZF (8) E obtained by inserting the DWS has a word transmission rate of 100 MBp.
s. In the specific configuration example of the composite 8-bit word string data forming unit 62, the word transmission rate from the data dividing unit 51 is set to 92.8125 MBp.
s is the divided 8-bit word string data DS (8) O,
The data is supplied to the switch corresponding to the switch 65 in FIG. 15, and from the switch corresponding to the switch 70 in FIG. 15, the divided 8-bit word string data DS (8) O is
Additional word data group D at a predetermined word interval
The composite 8-bit word string data DZS (8) O obtained by inserting the WS has a word transmission rate of 1
It is derived as being 00 MBps. Further, in the specific configuration example of the composite 8-bit word string data forming unit 63, the word transmission rate from the data dividing unit 51 is set to 9
The divided 8-bit word string data DS (8) E of 2.8125 MBps is supplied to the switch corresponding to the switch 65 in FIG.
The composite 8-bit word string data DZS () obtained by inserting the additional word data group DWS at predetermined word intervals from the switch corresponding to 0 into the divided 8-bit word string data DS (8) E. 8) E is derived assuming a word transmission rate of 100 MBps.

The composite 8-bit word string data forming unit 60,
The word transmission rates obtained from 61, 62 and 63 are
For example, compound 8-bit word string data DZF (8) O, DZF (8) E, DZS (8) O having 100 MBps
And DZS (8) E are supplied to P / S converters 72, 73, 74, and 75 with built-in 8B / 10B converters, respectively.

P / S converter 72 with built-in 8B / 10B converter
, The composite 8-bit word string data DZF (8)
O is subjected to an 8B / 10B conversion in which 8 bits forming each word in the O are divided, and each of the divided 8 bits is sequentially converted into 10-bit data according to a conversion table prepared in advance. Then, based on the composite 8-bit word sequence data DZF (8) O, the compound 10-bit word sequence data DZF (10) O having a word transmission rate of, for example, 100 MBps is formed. At this time, the 8-bit word synchronization data DEK8 is converted into K28.5 which is 10-bit word synchronization data, and an arbitrary 8-bit word data DEX8 is converted to 10-bit word data DX.
X. X and further converted to 8-bit word data DD
A8 is converted to 10-bit word data DDA10.

Therefore, 8-bit word string data DZF
(8) Additional word data group DWS inserted in O
Is, for example, as shown in FIG.
In the composite 10-bit word string data DZF (10) O, the portion based on the additional word data group DWS is as shown in FIG. In the portion based on the additional word data group DWS in the composite 10-bit word string data DZF (10) O, 2
K28.5 will be included.

In addition to the above, a P with a built-in 8B / 10B converter
/ S conversion section 72 outputs 8-bit word string data D
A composite 10 with a word transmission rate of 100 MBps, obtained by 8B / 10B conversion on ZF (8) O
P / S conversion for converting parallel data into serial data is performed on the bit word string data DZF (10) O,
The bit transmission rate based on the composite 10-bit word string data DZF (10) O is, for example, 100 MBps × 1
The serial data DSFO in which 0 = 1 Gbps is obtained, and the serial data DSFO is supplied to the transmission unit 76.

[0129] The transmitting section 76 is provided with serial data DSFO.
For example, in order to transmit through a data transmission line formed using a coaxial cable or an optical fiber, an electric signal suitable for a data transmission line formed using a coaxial cable, or an optical fiber is used. The signal is converted into a transmission signal SFO which is an optical signal suitable for the data transmission path formed and transmitted. Thus, transmission of the serial data DSFO is performed.

P / S converter 73 with built-in 8B / 10B converter
, The composite 8-bit word string data DZF (8)
E is subjected to 8B / 10B conversion in which each of the 8 bits forming each word in the E is divided, and each of the divided 8 bits is sequentially converted into 10-bit data according to a conversion table prepared in advance. Then, based on the composite 8-bit word string data DZF (8) E, the compound 10-bit word string data DZF (10) E having a word transmission rate of, for example, 100 MBps is formed. At this time, the 8-bit word synchronization data DEK8 is converted into K28.5 which is 10-bit word synchronization data, and an arbitrary 8-bit word data DEX8 is converted to 10-bit word data DX.
X. X and further converted to 8-bit word data DD
A8 is converted to 10-bit word data DDA10.

The composite 10-bit word string data DZF (1
0) The portion based on the additional word data group DWS in E is, for example, the same as the portion based on the additional word data group DWS in the composite 10-bit word string data DZF (10) O shown in FIG. The portion based on the additional word data group DWS in the 10-bit word string data DZF (10) E includes:
Two K28.5 will be included.

In the P / S converter 73 with built-in 8B / 10B converter, 8-bit word string data DZF
(8) P / S conversion for converting parallel data into serial data is performed on composite 10-bit word string data DZF (10) E having a word transmission rate of 100 MBps obtained by 8B / 10B conversion of E, 1
The bit transmission rate based on the 0-bit word string data DZF (10) E is, for example, 100 MBps × 10 = 1.
The serial data DSFE having Gbps is obtained, and the serial data DSFE is supplied to the transmission unit 77.

The transmitting section 77 is provided with the serial data DSFE.
For example, in order to transmit through a data transmission line formed using a coaxial cable or an optical fiber, an electric signal suitable for a data transmission line formed using a coaxial cable, or an optical fiber is used. The signal is converted into a transmission signal SFE which is an optical signal suitable for the data transmission path formed and transmitted. Thus, transmission of the serial data DSFE is performed.

P / S converter 74 with built-in 8B / 10B converter
, The composite 8-bit word string data DZS (8)
O is subjected to an 8B / 10B conversion in which 8 bits forming each word in the O are divided, and each of the divided 8 bits is sequentially converted into 10-bit data according to a conversion table prepared in advance. Then, based on the composite 8-bit word string data DZS (8) O, the compound 10-bit word string data DZS (10) O having a word transmission rate of, for example, 100 MBps is formed. At this time, the 8-bit word synchronization data DEK8 is converted into K28.5 which is 10-bit word synchronization data, and an arbitrary 8-bit word data DEX8 is converted to 10-bit word data DX.
X. X and further converted to 8-bit word data DD
A8 is converted to 10-bit word data DDA10.

The composite 10-bit word string data DZS (1
0) The portion based on the additional word data group DWS in O is, for example, the same as the portion based on the additional word data group DWS in the composite 10-bit word string data DZF (10) O shown in FIG. In the portion based on the additional word data group DWS in the 10-bit word string data DZS (10) O,
Two K28.5 will be included.

In the P / S converter 74 with built-in 8B / 10B converter, 8-bit word string data DZS
(8) The composite 10-bit word string data DZS (10) O having a word transmission rate of 100 MBps obtained by the 8B / 10B conversion of O is subjected to P / S conversion for converting parallel data into serial data. 1
The bit transmission rate based on the 0-bit word string data DZS (10) O is, for example, 100 MBps × 10 = 1.
The serial data DSSO having Gbps is obtained, and the serial data DSSO is supplied to the transmitting unit 78.

The transmitting section 78 is provided with the serial data DSSO
For example, in order to transmit through a data transmission line formed using a coaxial cable or an optical fiber, an electric signal suitable for a data transmission line formed using a coaxial cable, or an optical fiber is used. The signal is converted into a transmission signal SSO which is an optical signal suitable for the data transmission path formed and transmitted. Thereby, transmission of the serial data DSSO is performed.

Further, in the P / S converter 75 with a built-in 8B / 10B converter, the composite 8-bit word string data DZ
S (8) E is divided into 8 bits forming each word in the E (8) E, and each of the divided 8 bits is sequentially converted into 10-bit data according to a conversion table prepared in advance. 10B conversion is performed to form composite 10-bit word string data DZS (10) E having a word transmission rate of, for example, 100 MBps based on the composite 8-bit word string data DZS (8) E. At that time, the 8-bit word synchronization data DEK8 is converted into K28.5 which is 10-bit word synchronization data, and any 8-bit word data DEX8 is converted to 10-bit word data DXX. X, and the 8-bit word data DDA8 is converted to 10-bit word data DDA10.

The composite 10-bit word string data DZS (1
0) The portion based on the additional word data group DWS in E is, for example, the same as the portion based on the additional word data group DWS in the composite 10-bit word string data DZF (10) O shown in FIG. The portion based on the additional word data group DWS in the 10-bit word string data DZS (10) E includes:
Two K28.5 will be included.

In the built-in P / S converter 75 with 8B / 10B converter, 8-bit word string data DZS
(8) P / S conversion for converting parallel data into serial data is performed on composite 10-bit word string data DZS (10) E having a word transmission rate of 100 MBps obtained by 8B / 10B conversion on E, 1
The bit transmission rate based on the 0-bit word string data DZS (10) E is, for example, 100 MBps × 10 = 1.
The serial data DSSE having Gbps is obtained, and the serial data DSSE is supplied to the transmitting unit 79.

The transmitting section 79 transmits the serial data DSSE
For example, in order to transmit through a data transmission line formed using a coaxial cable or an optical fiber, an electric signal suitable for a data transmission line formed using a coaxial cable, or an optical fiber is used. The transmission signal SSE is converted into a transmission signal SSE which is an optical signal suitable for the formed data transmission path. Thus, transmission of the serial data DSSE is performed.

In the data transmission apparatus shown in FIG. 12 as described above, each of the P / S converters 72 to 75 with a built-in 8B / 10B converter, and each of the transmitters 76 to 79,
Compound 8-bit word string data DZF (8) O, DZF having a word transmission rate of 100 MBps, for example.
(8) E, DZS (8) O or DZS (8) E,
Performs 8B / 10B conversion to increase the word transmission rate to 100
Composite 10-bit word string data DZF with MBps
(10) O, DZF (10) E, DZS (10) O or DZS (10) E are obtained, and the composite 10-bit word string data DZF (10) O, DZF (10)
E, P / DZS (10) O or DZS (10) E
After performing S conversion, composite 10-bit word string data DZF
(10) O, DZF (10) E, DZS (10) O or DZS (10) E, and a bit transmission rate of 1 Gbps
s as serial data DSFO, DSFE, DSSO
Alternatively, it is converted to DSSE and transmitted.

Therefore, each of such P / S converters 72 to 75 with a built-in 8B / 10B converter and a transmitter 76
To 79 can be configured by effectively utilizing an integrated circuit (IC) element provided for transmitting digital data under a fiber channel system or the like, for example. Therefore, word string data including word synchronization data is formed based on the data to be transmitted, and the word string data is subjected to 8B / 10B conversion, converted to serial data, and transmitted for transmission. with transmission method which sequentially scanning and have been Y, the word sequence data forming the P _B / P _R signal format HD digital video signal digital video signal DV of as the (20), relatively easily adjust it The transmission can be performed using the means that can perform the transmission.

FIG. 18 is a block diagram showing a transmission unit in the data transmission apparatus shown in FIG. 1 according to an example of the data transmission method according to any one of the first to eighth aspects of the present invention. An example of a data receiving apparatus that receives transmission signals SAO, SAE, SBO, and SBE respectively transmitted from 40 to 43 will be described.

In the example of the data receiving apparatus shown in FIG. 18, for example, an electric signal suitable for a data transmission line formed by using a coaxial cable or an optical fiber formed by using an optical fiber is used. Transmission signals SAO, SAE, S, which are optical signals suitable for the data transmission path
Receiving units 80, 81, 8 for receiving BO and SBE, respectively
2 and 83 are provided.

When receiving the transmission signal SAO, the receiving section 80 reproduces the serial data DSAO based on the received transmission signal SAO and supplies it to the synchronous data detection / S / P conversion / 10B / 8B conversion section 84. I do.

Synchronous data detection, S / P conversion, 10B / 8
The B conversion unit 84 detects, as synchronous data, a portion of the serial data DSAO in which K28.5, which is 10-bit word synchronous data, has been converted to serial data, and performs word synchronization based on the detected synchronous data. Then, the serial data DSAO is subjected to S / P conversion processing, and the word transmission rate including the portion based on the additional word data group as shown in FIG. 19A is set to, for example, 92.8125 MBps. Composite 10-bit word string data DZA (1
0) Form O.

Synchronous data detection, S / P conversion, 10
In the B / 8B converter 84, the composite 10-bit word string data DZA (10) O is divided into 10 bits each, and each of the divided 10 bits is divided into 8 bits according to a conversion table prepared in advance. 10B / 8B conversion is performed to sequentially convert the data into 8 bits of data, and based on the sequentially obtained 8 bits of data, composite 8-bit word string data DZA (8) O having a word transmission rate of 92.8125 MBps is reproduced. I do. Then, the composite 8-bit word string data DZA (8) O with the word transmission rate of 92.8125 MBps obtained from the synchronous data detection / S / P conversion / 10B / 8B conversion unit 84 is supplied to the data separation unit 85. .

Further, synchronous data detection, S / P conversion, 1
The 0B / 8B converter 84 detects K28.5 in the portion based on the additional word data group DWS in the composite 10-bit word string data DZA (10) O, and converts the K28.5 detection output signal SWAO into a data separator. 8
5 and the skew absorption control signal forming section 86. This K28.5 detection output signal SWAO is obtained, for example, as shown in FIG. 19B according to the portion based on the additional word data group DWS in the composite 10-bit word string data DZA (10) O.

In the data separation section 85, the K2 signal from the synchronous data detection / S / P conversion / 10B / 8B conversion section 84
The 8.5 detection output signal SWAO is used to separate the additional word data group DWS from the composite 8-bit word string data DZA (8) O, and a word based on the composite 8-bit word string data DZA (8) O 9 transmission rate
8-bit word string data D at 2.8125 MBps
A (8) O and the additional word data group DWS are obtained separately from each other. Then, the additional word data group DWS and 8-bit word string data DA (8) O having a word transmission rate of 92.8125 MBps are transmitted from the data separation unit 85, and the 8-bit word string data DA (8) O is The data is supplied to the data synthesizing unit 87.

When receiving the transmission signal SAE, the receiving section 81 reproduces the serial data DSAE based on the received transmission signal SAE and supplies it to the synchronous data detection / S / P conversion / 10B / 8B conversion section 88. I do.

Synchronous data detection, S / P conversion, 10B / 8
The B conversion unit 88 detects, as synchronization data, a portion of the serial data DSAE in which K28.5, which is 10-bit word synchronization data, has been converted to serial data, and performs word synchronization based on the detected synchronization data. Then, the serial data DSAE is subjected to S / P conversion processing, and the additional word data group DWS of the composite 10-bit word string data DZA (10) O shown in FIG.
Word data group DW similar to the part based on
The composite 10-bit word string data DZA (10) E, which is a parallel data having a word transmission rate of, for example, 92.8125 MBps, including a portion based on S, is formed.

Synchronous data detection, S / P conversion, 10
In the B / 8B conversion unit 88, the composite 10-bit word string data DZA (10) E is divided into 10 bits each, and each of the divided 10 bits is divided into 8 bits according to a conversion table prepared in advance. 10B / 8B conversion, which is sequentially converted to data of the same type, and reproduces composite 8-bit word string data DZA (8) E having a word transmission rate of 92.8125 MBps based on the sequentially obtained 8-bit data. I do. Then, the composite 8-bit word string data DZA (8) E with the word transmission rate of 92.8125 MBps obtained from the synchronous data detection / S / P conversion / 10B / 8B conversion unit 88 is supplied to the data separation unit 89. .

Further, synchronous data detection, S / P conversion, 1
The 0B / 8B conversion section 88 detects K28.5 in the portion based on the additional word data group DWS in the composite 10-bit word string data DZA (10) E, and outputs the K28.5 detection output signal SWAE to the data separation section. 8
9 and the skew absorption control signal forming section 86. This K28.5 detection output signal SWAE is obtained in the same manner as the K28.5 detection output signal SWAO shown in FIG.

In the data separation unit 89, the K2 signal from the synchronous data detection / S / P conversion / 10B / 8B conversion unit 88
Using the 8.5 detection output signal SWAE, the additional word data group DWS is separated from the composite 8-bit word string data DZA (8) E, and a word based on the composite 8-bit word string data DZA (8) E 9 transmission rate
8-bit word string data D at 2.8125 MBps
A (8) E and the additional word data group DWS are obtained by being separated from each other. Then, the additional word data group DWS and 8-bit word string data DA (8) E having a word transmission rate of 92.8125 MBps are transmitted from the data separation unit 89, and the 8-bit word string data DA (8) E is The data is supplied to the data synthesizing unit 87.

When receiving the transmission signal SBO, the receiving section 82 reproduces the serial data DSBO based on the received transmission signal SBO and supplies it to the synchronous data detection / S / P conversion / 10B / 8B conversion section 91. I do.

Synchronous data detection, S / P conversion, 10B / 8
The B conversion unit 91 detects a portion of the serial data DSBO in which K28.5, which is 10-bit word synchronization data, has been converted to serial data as synchronization data, and performs word synchronization based on the detected synchronization data. Then, the serial data DSBO is subjected to S / P conversion processing, and the additional word data group DWS of the composite 10-bit word string data DZA (10) O shown in FIG.
Word data group DW similar to the part based on
The compound 10-bit word string data DZB (10) O, which is a parallel data having a word transmission rate of 92.8125 MBps, including a portion based on S, is formed.

Synchronous data detection, S / P conversion, 10
In the B / 8B conversion section 91, the composite 10-bit word string data DZB (10) O is divided into 10 bits each, and each of the divided 10 bits is divided into 8 bits according to a conversion table prepared in advance. Is subjected to 10B / 8B conversion to sequentially convert the data into a multi-bit word sequence data DZB (8) O having a word transmission rate of 92.8125 MBps based on the sequentially obtained 8-bit data. I do. Then, the composite 8-bit word string data DZB (8) O with the word transmission rate of 92.8125 MBps obtained from the synchronous data detection / S / P conversion / 10B / 8B conversion section 91 is supplied to the data separation section 92. .

Further, synchronous data detection, S / P conversion, 1
The 0B / 8B converter 91 detects K28.5 in the portion based on the additional word data group DWS in the composite 10-bit word string data DZB (10) O, and converts the K28.5 detection output signal SWBO into a data separator. 9
2 and the skew absorption control signal forming section 86. This K28.5 detection output signal SWBO is obtained in the same manner as the K28.5 detection output signal SWAO shown in FIG.

In the data separating section 92, the synchronous data detection / S / P conversion / K2 signal from the 10B / 8B conversion section 91
The 8.5 detection output signal SWBO is used to separate the additional word data group DWS from the composite 8-bit word string data DZB (8) O, and a word based on the composite 8-bit word string data DZB (8) O 9 transmission rate
8-bit word string data D at 2.8125 MBps
B (8) O and the additional word data group DWS are obtained separately from each other. Then, the additional word data group DWS and the 8-bit word string data DB (8) O having a word transmission rate of 92.8125 MBps are transmitted from the data separation unit 92, and the 8-bit word string data DB (8) O is The data is supplied to the data synthesizing unit 93.

When receiving the transmission signal SBE, the receiving section 83 reproduces the serial data DSBE based on the received transmission signal SBE and supplies it to the synchronous data detection / S / P conversion / 10B / 8B conversion section 94. I do.

Synchronous data detection, S / P conversion, 10B / 8
The B conversion unit 94 detects, as synchronization data, a portion of the serial data DSBE in which K28.5, which is 10-bit word synchronization data, has been converted into serial data, and performs word synchronization based on the detected synchronization data. Then, the serial data DSBE is subjected to S / P conversion processing, and the additional word data group DWS of the composite 10-bit word string data DZA (10) O shown in FIG.
Word data group DW similar to the part based on
The composite 10-bit word string data DZB (10) E, which is a parallel data having a word transmission rate of 92.8125 MBps, including a portion based on S, is formed.

Synchronous data detection, S / P conversion, 10
In the B / 8B conversion unit 94, the composite 10-bit word string data DZB (10) E is divided into 10 bits each, and each of the divided 10 bits is divided into 8 bits according to a conversion table prepared in advance. 10B / 8B conversion, which is sequentially converted to data of the same type, and reproduces composite 8-bit word string data DZB (8) E having a word transmission rate of 92.8125 MBps based on the sequentially obtained 8-bit data. I do. Then, the composite 8-bit word string data DZB (8) E with the word transmission rate of 92.8125 MBps obtained from the synchronous data detection / S / P conversion / 10B / 8B conversion unit 94 is supplied to the data separation unit 95. .

Further, synchronous data detection, S / P conversion, 1
The 0B / 8B converter 94 detects K28.5 in the portion based on the additional word data group DWS in the composite 10-bit word string data DZB (10) E, and converts the K28.5 detection output signal SWBE into a data separator. 9
5 and the skew absorption control signal forming section 86. This K28.5 detection output signal SWBE is obtained in the same manner as the K28.5 detection output signal SWAO shown in FIG.

In the data separation section 95, the K2 signal from the synchronous data detection / S / P conversion / 10B / 8B conversion section 94 is output.
Using the 8.5 detection output signal SWBE, the additional word data group DWS is separated from the composite 8-bit word string data DZB (8) E, and a word based on the composite 8-bit word string data DZB (8) E 9 transmission rate
8-bit word string data D at 2.8125 MBps
B (8) E and the additional word data group DWS are obtained by being separated from each other. Then, the additional word data group DWS and the 8-bit word string data DB (8) E having a word transmission rate of 92.8125 MBps are transmitted from the data separating unit 95, and the 8-bit word string data DB (8) E is The data is supplied to the data synthesizing unit 93.

Synchronous data detection, S / P conversion, 10B / 8
K obtained from B conversion units 84, 88, 91 and 94, respectively
28.5 Skew absorption control signal forming section 8 to which detection output signals SWAO, SWAE, SWBO and SWBE are supplied
6, K28.5 detection output signals SWAO and K2
8.5 A time difference between the transmission signal SAO and the transmission signal SAE is detected based on a time difference between the detection output signal SWAE and a skew absorption control signal SKA corresponding to the detected time difference is formed. .5 detection output signal SWBO and K28.5 detection output signal SWBE
, A time difference between the transmission signal SBO and the transmission signal SBE is detected, and a skew absorption control signal SKB corresponding to the detected time difference is formed. The skew absorption control signals SKA and SKB obtained from the skew absorption control signal forming section 86 are respectively
The data is supplied to the data synthesizing units 87 and 93.

In the data synthesizing section 87 to which the 8-bit word string data DA (8) O from the data separating section 85 and the 8-bit word string data DA (8) E from the data separating section 89 are supplied, Under the control of the timing by the skew absorption control signal SKA from the skew absorption control signal forming section 86, the 8-bit word string data DA (8)
O and 8-bit word string data DA (8) E are combined to make the word transmission rate 74.25 MBps.
Is a bit word sequence data, Y, P _B / P _R are signal format HD digital video signal to form a digital image signal DA (20), the digital video signal DA
Send (20).

The 8-bit word string data DB (8) O from the data separation unit 92 and the 8-bit word string data
In the data synthesizing unit 93 to which the bit word string data DB (8) E is supplied, the 8-bit word is controlled under the timing control by the skew absorption control signal SKB from the skew absorption control signal forming unit 86. Column data DB
(8) O and 8-bit word sequence data DB (8) by combining the E, are 20-bit word sequence data to 74.25MBps word transmission rate, Y, P _B / P _R signal format HD A digital video signal DB (20), which is a digital video signal, is formed.
B (20) is sent out.

As a result, from the data synthesizing units 87 and 93,
The digital video signal DA (20) reproduced without the skew caused by the time difference between the transmission signal SAO and the transmission signal SAE, and the skew caused by the time difference between the transmission signal SBO and the transmission signal SBE. The digital video signal DB (2
0) will be obtained respectively.

FIG. 20 is a block diagram showing a transmission unit in the data transmission apparatus shown in FIG. 1 according to an example of the data transmission method according to any one of the first to eighth aspects of the present invention. An example of a data receiving apparatus that receives transmission signals SAO, SAE, SBO, and SBE respectively transmitted from 40 to 43 will be described.

In the example of the data receiving apparatus shown in FIG. 20, for example, an electric signal suitable for a data transmission path formed by using a coaxial cable or an optical fiber formed by using an optical fiber is used. Transmission signals SAO, SAE, S, which are optical signals suitable for the data transmission path
Receivers 100 and 10 for receiving BO and SBE, respectively
1, 102 and 103 are provided.

When receiving the transmission signal SAO, the receiving section 100 reproduces the serial data DSAO based on the received transmission signal SAO, and detects it by the synchronous data detection / S / P
The data is supplied to the conversion / 10B / 8B conversion unit 104.

Synchronous data detection, S / P conversion, 10B / 8
In the B conversion unit 104, K28.5 which is 10-bit word synchronous data in the serial data DSAO is used.
Detects the portion converted into serial data as synchronous data, performs S / P conversion processing on the serial data DSAO with word synchronization based on the detected synchronous data, and for example, is shown in FIG. 21A. The composite 10-bit word string data D which is parallel data having a word transmission rate of, for example, 100.2375 MBps, including a portion based on the additional word data group DWS
ZA (10) O is formed.

Synchronous data detection, S / P conversion, 10
In the B / 8B conversion unit 104, the composite 10-bit word string data DZA (10) O is divided into 10 bits each, and each of the divided 10 bits is divided into 8 bits according to a conversion table prepared in advance. Is subjected to 10B / 8B conversion to sequentially convert the data into a multi-bit word sequence data DZA (8) O having a word transmission rate of 100.2375 MBps based on the sequentially obtained 8-bit data. I do. Then, synchronous data detection, S / P conversion, and 10B / 8B conversion unit 104
Word transmission rate obtained from 100.2375MB
composite 8-bit word string data DZA (8) O
Is supplied to the data separation / speed conversion unit 105.

Further, synchronous data detection, S / P conversion, 1
The 0B / 8B converter 104 detects K28.5 in the portion based on the additional word data group DWS in the composite 10-bit word string data DZA (10) O, and separates the K28.5 detection output signal SWAO into a data. Speed converter 105 and skew absorption control signal generator 106
To send to. This K28.5 detection output signal SWAO is
For example, as shown in FIG. 21B, it is obtained according to the portion based on the additional word data group DWS in the composite 10-bit word string data DZA (10) O.

In the data separation / speed conversion section 105, the K28.5 detection output signal SWAO from the synchronous data detection / S / P conversion / 10B / 8B conversion section 104 is used, and the composite 8-bit word string data DZA ( 8) Separation of the additional word data group DWS from O is performed, and added to the 8-bit word string data DA (8) O whose word transmission rate based on the composite 8-bit word string data DZA (8) O is 100.2375 MBps. The word data group DWS is obtained by being separated from each other. further,
In the data separation / speed conversion unit 105, the word transmission rate is changed from 100.2375 MBps to 92.8125M for the 8-bit word string data DA (8) O having the obtained word transmission rate of 100.2375 MBps.
A transmission rate conversion process for changing the transmission rate to Bps is performed, and 8-bit word string data DA (8) O having a word transmission rate of 92.8125 MBps is formed. Then, the additional word data group DWS and the word transmission rate are set to 92.8125 Mbps from the data separation / speed conversion unit 105.
Is transmitted, and the 8-bit word string data DA (8) O is supplied to the data synthesizing unit 107.

When receiving the transmission signal SAE, the receiving section 101 reproduces the serial data DSAE based on the received transmission signal SAE, and detects it by the synchronous data detection / S / P
The data is supplied to the conversion / 10B / 8B conversion unit 108.

Synchronous data detection, S / P conversion, 10B / 8
In the B conversion unit 108, K28.5 which is 10-bit word synchronous data in the serial data DSAE is used.
21 detects the portion converted into serial data as synchronous data, performs word synchronization based on the detected synchronous data, performs S / P conversion processing on the serial data DSAE, and obtains the composite 10 shown in FIG. Additional word data group DWS of bit word string data DZA (10) O
Word data group DW similar to the part based on
The composite 10-bit word string data DZA (10) E, which is a parallel data with a word transmission rate of, for example, 100.2375 MBps, including a portion based on S, is formed.

Synchronous data detection, S / P conversion, 10
The B / 8B conversion unit 108 divides the composite 10-bit word string data DZA (10) E into 10 bits each, and converts each of the divided 10 bits into 8 bits according to a conversion table prepared in advance. Is subjected to 10B / 8B conversion to sequentially convert the data into a multi-bit word sequence data DZA (8) E having a word transmission rate of 100.2375 MBps based on the sequentially obtained 8-bit data. I do. Then, synchronous data detection, S / P conversion, and 10B / 8B conversion unit 108
Word transmission rate obtained from 100.2375MB
ps composite 8-bit word string data DZA (8) E
Is supplied to the data separation / speed conversion unit 109.

Further, synchronous data detection, S / P conversion, 1
The 0B / 8B conversion section 108 detects K28.5 in the portion based on the additional word data group DWS in the composite 10-bit word string data DZA (10) E, and separates the K28.5 detection output signal SWAE into data. Speed converter 109 and skew absorption control signal generator 106
To send to. This K28.5 detection output signal SWAE is
K28.5 detection output signal SWAO shown in FIG.
Is obtained in the same way as

The data separation / speed conversion section 109 uses the K28.5 detection output signal SWAE from the synchronous data detection / S / P conversion / 10B / 8B conversion section 108 to generate the composite 8-bit word string data DZA ( 8) The additional word data group DWS is separated from E and added to the 8-bit word string data DA (8) E whose word transmission rate based on the composite 8-bit word string data DZA (8) E is 100.2375 MBps. The word data group DWS is obtained by being separated from each other. further,
In the data separation / speed conversion unit 109, the word transmission rate is changed from 100.2375 MBps to 92.8125M for the 8-bit word string data DA (8) E having the obtained word transmission rate of 100.2375 MBps.
The transmission rate conversion processing for changing the transmission rate to Bps is performed, and 8-bit word string data DA (8) E having a word transmission rate of 92.8125 MBps is formed. Then, from the data separation / speed conversion unit 109, the additional word data group DWS and the word transmission rate are set to 92.8125 Mbps.
Is transmitted, and the 8-bit word string data DA (8) E is supplied to the data synthesizing unit 107.

When receiving the transmission signal SBO, the receiving section 102 reproduces the serial data DSBO based on the received transmission signal SBO and detects it by synchronous data detection / S / P.
The data is supplied to the conversion / 10B / 8B conversion unit 110.

Synchronous data detection, S / P conversion, 10B / 8
In the B conversion unit 110, K28.5 which is 10-bit word synchronous data in the serial data DSBO is used.
21 detects the portion converted into serial data as synchronous data, performs word synchronization based on the detected synchronous data, performs S / P conversion processing on the serial data DSBO, and obtains the composite 10 shown in FIG. Additional word data group DWS of bit word string data DZA (10) O
Word data group DW similar to the part based on
The compound 10-bit word string data DZB (10) O, which is a parallel data having a word transmission rate of, for example, 100.2375 MBps, including a portion based on S, is formed.

Synchronous data detection, S / P conversion, 10
In the B / 8B conversion unit 110, the composite 10-bit word string data DZB (10) O is divided into 10 bits each, and each of the divided 10 bits is divided into 8 bits according to a conversion table prepared in advance. Is subjected to 10B / 8B conversion to sequentially convert the data into a multi-bit word sequence data DZB (8) O having a word transmission rate of 100.2375 MBps based on the sequentially obtained 8-bit data. I do. Then, synchronous data detection / S / P conversion / 10B / 8B conversion unit 110
Word transmission rate obtained from 100.2375MB
ps composite 8-bit word string data DZB (8) O
Is supplied to the data separation / speed conversion unit 111.

Further, synchronous data detection, S / P conversion, 1
The 0B / 8B converter 110 detects K28.5 in the portion based on the additional word data group DWS in the composite 10-bit word string data DZB (10) O, and separates the K28.5 detection output signal SWBO into data. Speed converter 111 and skew absorption control signal generator 106
To send to. This K28.5 detection output signal SWBO is
K28.5 detection output signal SWAO shown in FIG.
Is obtained in the same way as

The data separation / speed conversion section 111 uses the K28.5 detection output signal SWBO from the synchronous data detection / S / P conversion / 10B / 8B conversion section 110 to generate the composite 8-bit word string data DZB ( 8) Separation of the additional word data group DWS from O is performed, and added to the 8-bit word string data DB (8) O whose word transmission rate based on the composite 8-bit word string data DZB (8) O is 100.2375 MBps. The word data group DWS is obtained by being separated from each other. further,
In the data separation / speed conversion section 111, the word transmission rate is changed from 100.2375 MBps to 92.8125M to the 8-bit word string data DB (8) O having the obtained word transmission rate of 100.2375 MBps.
The transmission rate conversion processing for changing the transmission rate to Bps is performed, and 8-bit word string data DB (8) O having a word transmission rate of 92.8125 MBps is formed. Then, from the data separation / speed conversion unit 111, the additional word data group DWS and the word transmission rate are set to 92.8125 Mbps.
Is transmitted, and the 8-bit word string data DB (8) O is supplied to the data synthesizing unit 112.

When receiving the transmission signal SBE, the receiving section 103 reproduces the serial data DSBE based on the received transmission signal SBE, and reproduces the data DSBE by synchronizing data detection / S / P.
The data is supplied to the conversion / 10B / 8B conversion unit 113.

Synchronous data detection, S / P conversion, 10B / 8
In the B conversion unit 113, K28.5 which is 10-bit word synchronous data in the serial data DSBE is used.
21 detects the portion converted into serial data as synchronous data, performs word synchronization based on the detected synchronous data, performs S / P conversion processing on the serial data DSBE, and obtains the composite 10 shown in FIG. Additional word data group DWS of bit word string data DZA (10) O
Word data group DW similar to the part based on
The composite 10-bit word string data DZB (10) E, which is a parallel data having a word transmission rate of, for example, 100.2375 MBps, including a portion based on S, is formed.

Synchronous data detection, S / P conversion, 10
The B / 8B conversion section 113 divides the composite 10-bit word string data DZB (10) E into 10 bits each, and converts each of the divided 10 bits into 8 bits according to a conversion table prepared in advance. Is subjected to 10B / 8B conversion to sequentially convert the data into a multi-bit word sequence data DZB (8) E having a word transmission rate of 100.2375 MBps based on the sequentially obtained 8-bit data. I do. Then, synchronous data detection, S / P conversion, and 10B / 8B conversion unit 113
Word transmission rate obtained from 100.2375MB
ps composite 8-bit word string data DZB (8) E
Is supplied to the data separation / speed conversion unit 114.

Further, synchronous data detection, S / P conversion, 1
The 0B / 8B converter 113 detects K28.5 in the portion based on the additional word data group DWS in the composite 10-bit word string data DZB (10) E, and separates the K28.5 detection output signal SWBE into data. Speed converter 114 and skew absorption control signal generator 106
To send to. This K28.5 detection output signal SWBE is
K28.5 detection output signal SWAO shown in FIG.
Is obtained in the same way as

The data separation / speed conversion section 114 uses the K28.5 detection output signal SWBE from the synchronous data detection / S / P conversion / 10B / 8B conversion section 113 to generate composite 8-bit word string data DZB ( 8) The additional word data group DWS is separated from E and added to the 8-bit word string data DB (8) E whose word transmission rate based on the composite 8-bit word string data DZB (8) E is 100.2375 MBps. The word B-data group DWS is obtained separately from each other. further,
In the data separation / speed conversion section 114, the word transmission rate is changed from 100.2375 MBps to 92.8125M to the 8-bit word string data DB (8) E having the obtained word transmission rate of 100.2375 MBps.
The transmission rate conversion processing for changing to Bps is performed, and 8-bit word string data DB (8) E having a word transmission rate of 92.8125 MBps is formed. Then, from the data separation / speed conversion unit 114, the additional word data group DWS and the word transmission rate are set to 92.8125 Mbps.
And the 8-bit word string data DB (8) E is sent to the data synthesizing unit 112.

Synchronous data detection, S / P conversion, 10B / 8
K28.5 detection output signals SWAO, SWAE, and S obtained from B conversion units 104, 108, 110, and 113, respectively.
In the skew absorption control signal forming unit 106 to which WBO and SWBE are supplied, the K28.5 detection output signal SW
A time difference between the transmission signal SAO and the transmission signal SAE is detected based on a time difference between the AO and the K28.5 detection output signal SWAE, and a skew absorption control signal SKA corresponding to the detected time difference is formed. , K
Based on the time difference between the 28.5 detection output signal SWBO and the K28.5 detection output signal SWBE, a time difference between the transmission signal SBO and the transmission signal SBE is detected, and skew absorption control is performed according to the detected time difference. Signal S
Form KB. The skew absorption control signals SKA and SKA obtained from the skew absorption control signal forming unit 106
The KB is supplied to the data synthesizing units 107 and 112, respectively.

8-bit word string data DA (8) O from data separation / speed conversion section 105 and 8-bit word string data DA (8) E from data separation / speed conversion section 109
Is supplied to the data synthesizing unit 107, the 8-bit word string data DA (8) O and the 8-bit word string data DA (8) O are controlled under the timing control by the skew absorption control signal SKA from the skew absorption control signal forming unit 106. By combining the bit word string data DA (8) E with the word transmission rate of 7
Are 20-bit word sequence data to _{4.25MBps, Y, P B / P} R are signal format HD digital video signal to form a digital image signal DA (20), the digital video signal DA (20) Send out.

Also, the 8-bit word string data DB (8) O from the data separation / speed conversion unit 111 and the data separation / speed conversion
8-bit word string data DB from speed conversion section 114
(8) In the data synthesizing unit 112 to which E is supplied, the 8-bit word string data DB (8) is subjected to timing control by the skew absorption control signal SKB from the skew absorption control signal forming unit 106. ) O and 8-bit word sequence data DB (8) by combining the E, are 20-bit word sequence data to 74.25MBps word transmission rate, Y, P _B / P _R signal format HD digital video A digital video signal DB (20) as a signal is formed, and the digital video signal DB (20) is transmitted.

As a result, data synthesizing sections 107 and 112
From the digital video signal DA (20) reproduced without skew caused by the time difference between the transmission signal SAO and the transmission signal SAE, and the transmission signal SBO
Digital video signal DB reproduced without skew due to a time difference between the signal and the transmission signal SBE
(20) is obtained respectively.

FIG. 22 shows another example of the data transmission method according to any one of the first to eighth aspects of the present invention. Transmission signals SFO, SFE, SSO, and SSE transmitted from transmission units 76 to 79, respectively.
1 shows an example of a data receiving device that receives a message.

In the example of the data receiving apparatus shown in FIG. 22, for example, an electric signal suitable for a data transmission path formed by using a coaxial cable or an optical fiber formed by using an optical fiber is used. Transmission signals SFO, SFE, S which are optical signals suitable for the data transmission path
Receivers 120 and 12 for receiving SO and SSE, respectively
1, 122 and 123 are provided.

Receiving section 120, when receiving transmission signal SFO, reproduces serial data DSFO based on received transmission signal SFO and detects it by synchronous data detection / S / P
The data is supplied to the conversion / 10B / 8B conversion unit 124.

Synchronous data detection, S / P conversion, 10B / 8
In the B conversion unit 124, K28.5 which is 10-bit word synchronous data in the serial data DSFO is used.
Detects the portion converted into serial data as synchronous data, performs word synchronization based on the detected synchronous data, performs S / P conversion processing on the serial data DSFO, and performs the composite 10 shown in FIG. Additional word data group DWS of bit word string data DZA (10) O
Word data group DW similar to the part based on
Composite 1 which is a parallel data having a word transmission rate of, for example, 100 MBps including a part based on S
The 0-bit word string data DZF (10) O is formed.

Synchronous data detection, S / P conversion, 10
In the B / 8B conversion unit 124, the composite 10-bit word string data DZF (10) O is divided into 10 bits each, and each of the divided 10 bits is divided into 8 bits according to a conversion table prepared in advance. 10B / 8B conversion, which is sequentially converted to data of the same type, and based on the sequentially obtained 8-bit data, composite 8-bit word string data DZF (8) O having a word transmission rate of 100 MBps is reproduced. Then, the composite 8-bit word string data DZF (8) O having the word transmission rate of 100 MBps obtained from the synchronous data detection / S / P conversion / 10B / 8B conversion unit 124 is supplied to the data separation / speed conversion unit 125. You.

Further, synchronous data detection, S / P conversion, 1
The 0B / 8B converter 124 detects K28.5 in the portion based on the additional word data group DWS in the composite 10-bit word string data DZF (10) O, and separates the K28.5 detection output signal SWFO into data. Speed converter 125 and skew absorption control signal generator 126
To send to. This K28.5 detection output signal SWFO is
According to the portion based on the additional word data group DWS in the composite 10-bit word string data DZF (10) O, for example, it is obtained in the same manner as the K28.5 detection output signal SWAO shown in FIG. 21B.

The data separation / speed conversion section 125 uses the K28.5 detection output signal SWFO from the synchronous data detection / S / P conversion / 10B / 8B conversion section 124 to generate the composite 8-bit word string data DZF ( 8) Separation of the additional word data group DWS from O is performed, and the 8-bit word string data DF (8) O and the additional word data are set such that the word transmission rate based on the composite 8-bit word string data DZF (8) O is 100 MBps. Group DWS
Are obtained separately from each other. Further, the data separation / speed conversion unit 125 sets the obtained word transmission rate to 100 MBps and sets the 8-bit word string data D to 100 MBps.
In F (8) O, the word transmission rate is set to 100 MBps
Is changed to 92.8125 MBps, and the word transmission rate is changed to 92.8125 MBps.
The 8-bit word string data DF (8) O to be s is formed. Then, the additional word data group DWS and the word transmission rate are set to 9
8-bit word string data D at 2.8125 MBps
F (8) O is transmitted, and the 8-bit word string data DF
(8) O is supplied to the data synthesizing unit 127.

When receiving the transmission signal SFE, the receiving section 121 reproduces the serial data DSFE based on the received transmission signal SFE and detects it by synchronizing data detection / S / P.
It is supplied to the conversion / 10B / 8B conversion unit 128.

Synchronous data detection, S / P conversion, 10B / 8
In the B conversion unit 128, K28.5 which is 10-bit word synchronous data in the serial data DSFE is used.
21 detects the portion converted into serial data as synchronous data, performs word synchronization based on the detected synchronous data, performs S / P conversion processing on the serial data DSFE, and obtains the composite 10 shown in FIG. Additional word data group DWS of bit word string data DZA (10) O
Word data group DW similar to the part based on
Composite 1 which is a parallel data having a word transmission rate of, for example, 100 MBps including a part based on S
The 0-bit word string data DZF (10) E is formed.

Synchronous data detection, S / P conversion, 10
The B / 8B conversion unit 128 divides the composite 10-bit word string data DZF (10) E into 10 bits each, and converts each of the divided 10 bits into 8 bits according to a conversion table prepared in advance. 10B / 8B conversion is performed to sequentially convert the data into a multi-bit word sequence data DZF (8) E having a word transmission rate of 100 MBps based on the sequentially obtained 8-bit data. Then, the composite 8-bit word string data DZF (8) E with the word transmission rate of 100 MBps obtained from the synchronous data detection / S / P conversion / 10B / 8B conversion unit 128 is supplied to the data separation / speed conversion unit 129. You.

Further, synchronous data detection, S / P conversion, 1
The 0B / 8B converter 128 detects K28.5 in the portion based on the additional word data group DWS in the composite 10-bit word string data DZF (10) E, and separates the K28.5 detection output signal SWFE into data. Speed converter 129 and skew absorption control signal generator 126
To send to. This K28.5 detection output signal SWFE is
K28.5 detection output signal SWAO shown in FIG.
Is obtained in the same way as

The data separation / speed conversion section 129 uses the K28.5 detection output signal SWFE from the synchronous data detection / S / P conversion / 10B / 8B conversion section 128 to use the composite 8-bit word string data DZF ( 8) Separation of the additional word data group DWS from E is performed, and the 8-bit word string data DF (8) E and the additional word data are set such that the word transmission rate based on the composite 8-bit word string data DZF (8) E is 100 MBps. Group DWS
Are obtained separately from each other. Further, in the data separation / speed conversion section 129, the obtained word transmission rate is set to 100 MBps, and the 8-bit word string data D
F (8) E, the word transmission rate is set to 100 MBps.
Is changed to 92.8125 MBps, and the word transmission rate is changed to 92.8125 MBps.
The 8-bit word string data DF (8) E to be s is formed. Then, from the data separation / speed conversion unit 129, the additional word data group DWS and the word transmission rate are set to 9
8-bit word string data D at 2.8125 MBps
F (8) E is transmitted, and the 8-bit word string data DF
(8) E is supplied to the data synthesizing unit 127.

When receiving the transmission signal SSO, the receiving section 122 reproduces the serial data DSSO based on the received transmission signal SSO, and detects it by the synchronous data detection / S / P
The data is supplied to the conversion / 10B / 8B conversion unit 130.

Synchronous data detection, S / P conversion, 10B / 8
In the B converter 130, K28.5, which is 10-bit word synchronous data in the serial data DSSO, is used.
21 detects the portion converted into serial data as synchronous data, performs word-to-word synchronization based on the detected synchronous data, performs S / P conversion processing on the serial data DSSO, and outputs the composite data 10 shown in FIG. Additional word data group DWS of bit word string data DZA (10) O
Word data group DW similar to the part based on
Composite 1 which is a parallel data having a word transmission rate of, for example, 100 MBps including a part based on S
The 0-bit word string data DZS (10) O is formed.

Synchronous data detection, S / P conversion, 10
In the B / 8B conversion unit 130, the composite 10-bit word string data DZS (10) O is divided into 10 bits each, and each of the divided 10 bits is divided into 8 bits according to a conversion table prepared in advance. 10B / 8B conversion is performed to sequentially convert the data into the data, and the composite 8-bit word string data DZS (8) O having a word transmission rate of 100 MBps is reproduced based on the sequentially obtained 8-bit data. Then, the composite 8-bit word string data DZS (8) O having a word transmission rate of 100 MBps obtained from the synchronous data detection / S / P conversion / 10B / 8B conversion unit 130 is supplied to the data separation / speed conversion unit 131. You.

Further, synchronous data detection, S / P conversion, 1
The 0B / 8B converter 130 detects K28.5 in the portion based on the additional word data group DWS in the composite 10-bit word string data DZS (10) O, and separates the K28.5 detection output signal SWSO into data. Speed converter 131 and skew absorption control signal generator 126
To send to. This K28.5 detection output signal SWSO is
K28.5 detection output signal SWAO shown in FIG.
Is obtained in the same way as

The data separation / speed conversion section 131 uses the K28.5 detection output signal SWSO from the synchronous data detection / S / P conversion / 10B / 8B conversion section 130 to generate composite 8-bit word string data DZS ( 8) Separation of the additional word data group DWS from O is performed, and the 8-bit word string data DS (8) O and the additional word data are set such that the word transmission rate based on the composite 8-bit word string data DZS (8) O is 100 MBps. Group DWS
Are obtained separately from each other. Further, in the data separation / speed conversion section 131, the obtained word transmission rate is set to 100 MBps,
In S (8) O, the word transmission rate is set to 100 MBps.
Is changed to 92.8125 MBps, and the word transmission rate is changed to 92.8125 MBps.
The 8-bit word string data DS (8) O to be s is formed. Then, from the data separation / speed conversion unit 131, the additional word data group DWS and the word transmission rate are set to 9
8-bit word string data D at 2.8125 MBps
S (8) O is transmitted, and the 8-bit word string data DS
(8) O is supplied to the data synthesizing unit 127.

When receiving the transmission signal SSE, the receiving section 123 reproduces the serial data DSSE based on the received transmission signal SSE, and detects it by the synchronous data detection / S / P
The data is supplied to the conversion / 10B / 8B conversion unit 132.

Synchronous data detection, S / P conversion, 10B / 8
In the B conversion unit 132, K28.5 which is 10-bit word synchronous data in the serial data DSSE is used.
Detects the portion converted into serial data as synchronous data, performs word-to-word synchronization based on the detected synchronous data, performs S / P conversion processing on the serial data DSSE, and performs a composite 10 shown in FIG. Additional word data group DWS of bit word string data DZA (10) O
Word data group DW similar to the part based on
Composite 1 which is a parallel data having a word transmission rate of, for example, 100 MBps including a part based on S
The 0-bit word string data DZS (10) E is formed.

Synchronous data detection, S / P conversion, 10
In the B / 8B conversion section 132, the composite 10-bit word string data DZS (10) E is divided into 10 bits each, and each of the divided 10 bits is divided into 8 bits according to a conversion table prepared in advance. 10B / 8B conversion is performed to sequentially convert the data into 8 bits of data, and based on the 8 bits of data sequentially obtained, composite 8-bit word string data DZS (8) E having a word transmission rate of 100 MBps is reproduced. Then, the composite 8-bit word string data DZS (8) E having a word transmission rate of 100 MBps obtained from the synchronous data detection / S / P conversion / 10B / 8B conversion unit 132 is supplied to the data separation / speed conversion unit 133. You.

Further, synchronous data detection, S / P conversion, 1
The 0B / 8B conversion section 132 detects K28.5 in the portion based on the additional word data group DWS in the composite 10-bit word string data DZS (10) E, and separates the K28.5 detection output signal SWSE into data. Speed converter 133 and skew absorption control signal generator 126
To send to. This K28.5 detection output signal SWSE is
K28.5 detection output signal SWAO shown in FIG.
Is obtained in the same way as

The data separation / speed conversion section 133 uses the K28.5 detection output signal SWSE from the synchronous data detection / S / P conversion / 10B / 8B conversion section 132 to generate the composite 8-bit word string data DZS ( 8) Separation of the additional word data group DWS from E is performed, and the 8-bit word string data DS (8) E and the additional word B whose word transmission rate based on the composite 8-bit word string data DZS (8) E is 100 MBps. Data group DWS
Are obtained separately from each other. Further, in the data separation / speed conversion section 133, the 8-bit word string data D with the obtained word transmission rate being 100 MBps
S (8) E, the word transmission rate is set to 100 MBps
Is changed to 92.8125 MBps, and the word transmission rate is changed to 92.8125 MBps.
The 8-bit word string data DS (8) E to be s is formed. Then, from the data separation / speed conversion unit 133, the additional word data group DWS and the word transmission rate are set to 9
8-bit word string data D at 2.8125 MBps
S (8) E is transmitted, and the 8-bit word string data DS
(8) E is supplied to the data synthesizing unit 127.

Synchronous data detection, S / P conversion, 10B / 8
K28.5 detection output signals SWFO, SWFE, and S obtained from B conversion units 124, 128, 130, and 132, respectively.
In the skew absorption control signal forming section 126 to which WSO and SWSE are supplied, the K28.5 detection output signal SW
Based on a time difference between FO, SWFE, SWSO and SWSE, transmission signals SFO, SFE, SSO
, And SSE, and forms a skew absorption control signal SKW corresponding to the detected time difference. The skew absorption control signal SKW obtained from the skew absorption control signal forming unit 126 is
27.

The 8-bit word string data DF (8) O from the data separation / speed conversion unit 125 and the 8-bit word string data DF (8) from the data separation / speed conversion unit 129
E, a data combining unit to which the 8-bit word string data DS (8) O from the data separation / speed conversion unit 131 and the 8-bit word string data DS (8) E from the data separation / speed conversion unit 133 are supplied. 127, the skew absorption control signal S from the skew absorption control signal forming unit 126
Under the timing control by KW, 8-bit word string data DF (8) O, DF (8) E, DS
(8) O and by synthesizing DS (8) E, are 20-bit word sequence data to 148.5MBps word transmission rate, Y sequentially with scanning, P _B / P _R signal format HD A digital video signal DV (20), which is a digital video signal, is formed.
Send (20).

As a result, a digital video signal DA (20) reproduced without skew due to the time difference between the transmission signals SFO, SFE, SSO and SSE is obtained from the data synthesizing section 127. .

[0221]

As is apparent from the above description, a data transmission method according to any one of claims 1 to 8 in the claims of the present application, and the claims of the present application In the data transmission apparatus according to any one of the ninth to eleventh aspects of the present invention, the conversion processing for each predetermined unit division into word string data in which word data of a predetermined number of bits are continued. Is performed, a plurality of divided 8-bit word string data are formed, and the obtained plurality of divided 8-bit word strings are obtained.
An additional word data group including 8-bit word synchronization data having a preset code is inserted into each of the bit word string data to form a plurality of composite 8-bit word string data. A P which incorporates 8B / 10B conversion means in each of the word string data
The 8B / 10B conversion and the P / S conversion are performed by the / S conversion means to form a plurality of composite 10-bit word string data and a plurality of serial data based thereon, and the plurality of serial data are transmitted through a transmission path. Sent to be transmitted.

Each of the plurality of composite 10-bit word string data converted into a plurality of serial data includes 10-bit word synchronous data having a preset code. Each of the plurality of composite 10-bit word string data, each of which is transmitted as serial data,
The bit word synchronization data is to be properly detected as word synchronization data required for processing for reproducing a plurality of divided 8-bit word string data. The 10-bit word string data included in each of the plurality of composite 10-bit word string data is 8B / 10
By being obtained through B conversion, good transmission quality is provided. Therefore, on the receiving side, it is necessary to perform a process for reproducing a plurality of divided 8-bit word string data based on a plurality of received composite 10-bit word string data while obtaining good transmission quality. The data synchronization state assured is ensured.

Thus, the data transmission method according to any one of claims 1 to 8 in the claims of the present application, or claims 9 to 9 in the claims of the present application According to the data transmission apparatus of the present invention, each of a plurality of composite 8-bit word string data into which an additional word data group including 8-bit word synchronization data has been inserted. 8B / 10B conversion and P / S conversion processing, and transmission of a plurality of serial data obtained thereby, reception of a plurality of serial data, and S / S for a plurality of received serial data on the receiving side. P conversion and 10B / 8B conversion processing, for example,
This can be accomplished using integrated circuit devices used for transmitting and receiving digital data under Fiber Channel systems. Therefore, 8B / 10B conversion is performed based on the data to be transmitted, and word string data including word synchronization data having a predetermined code is formed, and the word string data is serialized. The data is transmitted to be transmitted after being converted into data. For example, Y, Y for progressive scanning can be used in a transmission method capable of obtaining good transmission quality.
The word sequence data to form a digital video signal as the P _B / P _R signal format HD digital video signals, so that can be transmitted by utilizing a means that can adjust relatively easily.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of a data transmission method according to any one of claims 1 to 8 in the claims of the present application; FIG. 12 is a block diagram showing an example of a data transmission device according to the invention described in any one of claims 11 to 11.

FIG. 2 is a block diagram showing a specific configuration example of a data division unit in the example of the data transmission device shown in FIG. 1;

FIG. 3 is a time chart used for describing an operation of a specific configuration example of the data division unit illustrated in FIG. 2;

FIG. 4 is a block diagram showing a specific configuration example of a composite 8-bit word string data forming unit in the example of the data transmission device shown in FIG. 1;

FIG. 5 is a time chart for explaining the operation of a specific configuration example of the composite 8-bit word string data forming unit shown in FIG. 4;

FIG. 6 is a time chart used for describing an operation of a specific configuration example of the composite 8-bit word string data forming unit shown in FIG. 4;

FIG. 7 is a time chart for explaining the operation of a specific configuration example of the composite 8-bit word string data forming unit shown in FIG. 4;

FIG. 8 is a block diagram showing another specific configuration example of the composite 8-bit word string data forming unit in the example of the data transmission device shown in FIG. 1;

FIG. 9 is a time chart used for describing the operation of another specific configuration example of the composite 8-bit word string data forming unit shown in FIG. 8;

10 is a time chart used for describing the operation of a P / S conversion unit with a built-in 8B / 10B conversion unit in the example of the data transmission device shown in FIG. 1;

FIG. 11 is a time chart for explaining the operation of a P / S converter with a built-in 8B / 10B converter in the example of the data transmission device shown in FIG. 1;

FIG. 12 is a diagram illustrating another example of the data transmission method according to the invention described in any one of claims 1 to 8 in the claims of the present application. FIG. 14 is a block diagram showing another example of the data transmission device according to the invention described in any one of Items 9 to 11.

13 is a block diagram showing a specific configuration example of a data division unit in the example of the data transmission device shown in FIG.

FIG. 14 is a time chart used for describing an operation of a specific configuration example of the data division unit illustrated in FIG. 13;

15 is a block diagram showing a specific configuration example of a composite 8-bit word string data forming unit in the example of the data transmission device shown in FIG. 12;

FIG. 16 is a time chart used for describing an operation of a specific configuration example of the composite 8-bit word string data forming unit shown in FIG. 15;

FIG. 17 is a time chart used for describing the operation of the P / S converter with a built-in 8B / 10B converter in the example of the data transmission device shown in FIG. 12;

FIG. 18 shows an example of a data receiving apparatus for receiving a transmission signal transmitted according to an example of the data transmission method according to any one of claims 1 to 8 in the claims of the present application. It is a block block diagram.

FIG. 19 is a time chart used for describing the operation of the data receiving device shown in FIG. 18;

FIG. 20 shows an example of a data receiving apparatus that receives a transmission signal transmitted according to an example of the data transmission method according to any one of claims 1 to 8 in the claims of the present application. It is a block block diagram.

21 is a time chart used for describing the operation of the data receiving device shown in FIG. 20.

FIG. 22 is an example of a data receiving apparatus for receiving a transmission signal transmitted according to another example of the data transmission method according to any one of claims 1 to 8 in the claims of the present application. FIG. 3 is a block diagram showing the configuration.

FIG. 23 is a conceptual diagram for explaining a “frame” used in transmitting digital data.

FIG. 24 is a conceptual diagram serving to explain word synchronization data used in transmitting digital data.

FIG. 25 is a time chart showing a data format of a Y data sequence and a P _B / P _R data sequence forming a digital video signal.

[Explanation of symbols]

11, 12, 51 ... data division section, 13, 52
..Data distribution units, 14, 25, 53 ... control signal forming units, 15A to 15D, 29, 30, 54A to 54
H, 67, 68 ... memory unit, 16, 31, 55,
69 ... memory control signal forming unit, 17, 18, 2
7, 32, 56, 57, 58, 59, 65, 70 ...
Switch, 20, 21, 34, 35, 60, 61, 6
2, 63... Composite 8-bit word string data forming unit,
23 ... data selection / extraction section, 24, 33, 71 ...
.Word data transmitting sections, 28,66... Switch control signal forming sections, 36,37,38,39,72,7
3, 74, 75... 8B / 10B converter built-in P / S converter, 40, 41, 42, 43, 76, 77, 78,
79 ・ ・ ・ Transmission unit

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04N 7/08 H04N 7/08 Z 7/081 F term (Reference) 5C059 KK13 PP04 PP16 RB06 RB11 RB14 RC02 SS22 UA02 UA35 UA36 UA38 5C063 AA11 AB03 AB07 AB11 AC01 CA14 5K028 EE03 MM17 SS06 SS24 5K029 EE06 GG03 LL14 5K047 DD02 FF17 GG04 HH01 HH44 MM02 MM24

Claims (11)

[Claims] 1. A division is performed on a word string data composed of a series of word data of a predetermined number of bits by performing a conversion process for each predetermined unit division to obtain a plurality of divided 8-bit word string data. Each of the divided 8-bit word string data is inserted with an additional word data group including 8-bit word synchronization data having a preset code at a predetermined word interval, to form a plurality of composite 8-bit word string data. After forming the data, each of the plurality of complex 8-bit word string data is subjected to 8-bit / 10-bit conversion by using a parallel / serial conversion means having a built-in 8-bit / 10-bit conversion means, and 1 having a preset code obtained based on the synchronization data
Obtaining a plurality of composite 10-bit word string data including a portion based on the additional word data group including the 0-bit word synchronization data, and converting the plurality of composite 10-bit word string data into a plurality of serial data;
A data transmission method for transmitting each of the plurality of serial data for transmission. 2. A division by performing a conversion process on word string data for each predetermined unit section, the respective predetermined unit sections are sequentially and repeatedly written into each of a plurality of memory means, and each of the plurality of memory means is written. 2. The data transmission method according to claim 1, wherein the writing is performed by selectively reading out the written unit division in units of 8 bits. 3. The division by performing a conversion process on the word string data for each predetermined unit section is repeated by sequentially writing each of the predetermined unit sections into each of four memory means, and From each of the two memory means, the written unit section is alternately read in units of 8 bits, and the written unit section is read from each of the other two of the four memory means. 3. The data transmission method according to claim 2, wherein the reading is performed alternately in units of 8 bits to obtain two divided 8-bit word string data. 4. A division by performing a conversion process on word string data for each predetermined unit section, each of said predetermined unit sections is sequentially and repeatedly written into each of eight memory means, and said eight unit means are written. 3. A four-part 8-bit word string data is obtained by reading out a written unit division from each of two sets of memory means in units of 8 bits. Data transmission method as described. 5. The method according to claim 1, wherein the word string data is digital information data forming a digital video signal, and the predetermined unit division is each line period portion or each frame period portion of the digital information data. The data transmission method according to any one of claims 1 to 4. 6. The word string data is 20-bit word string data, which is digital information data forming a digital video signal, and a predetermined unit division is defined as each line period portion or each frame period portion of the 20-bit word string data. The data transmission method according to claim 5, wherein: 7. A transmission rate conversion is performed on each of a plurality of divided 8-bit word string data prior to insertion of an additional word data group.
The data transmission method according to any of the above. 8. The transmission of each of the plurality of serial data by obtaining a plurality of transmission signals based on the plurality of serial data and transmitting the plurality of transmission signals through a transmission path. The data transmission method according to any one of claims 1 to 7, wherein: 9. Data dividing means for dividing a word string data consisting of a series of word data of a predetermined number of bits by performing a conversion process for each predetermined unit section to obtain a plurality of divided 8-bit word string data. And inserting an additional word data group including 8-bit word synchronization data having a preset code into each of the plurality of divided 8-bit word string data obtained from the data dividing means at predetermined word intervals. And a composite 8-bit word string data forming means for forming a plurality of composite 8-bit word string data; and a plurality of 8-bit word string data obtained from the composite 8-bit word string data forming means. /
10-bit conversion is performed, and a predetermined code having a predetermined code obtained based on the 8-bit word synchronization data is obtained.
Obtaining a plurality of composite 10-bit word string data having a portion based on the additional word data group including bit word synchronization data, and converting the plurality of composite 10-bit word string data into a plurality of serial data;
A parallel / serial converter having a built-in bit / 10-bit converter, and a parallel / serial converter having a built-in 8-bit / 10-bit converter.
A transmission means for transmitting each of a plurality of serial data obtained from the serial conversion means for transmission. 10. The data dividing means includes a plurality of memory means in which predetermined unit sections in the word string data are sequentially and repeatedly written, and the written unit sections are selectively read. Claim 9
A data transmission device according to claim 1. 11. The multi-bit word string data forming means performs transmission rate conversion on each of a plurality of divided 8-bit word string data prior to insertion of an additional word data group. Or the data transmission device according to 10.