JP2001045517A - Data transmission method and system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To execute transmission of digital word stream data with a means that can easily arrange the digital word stream data by applying parallel/ serial(P/S) conversion processing to each of N-channel 20-bit word stream data and transmitting the obtained N-channel serial data through N-sets of transmission lines, respectively. SOLUTION: A P/S conversion section 21 applies P/S conversion to 20-bit word stream data DZY (20) to form serial data DSY whose bit transmission rate is 74.25 Mbps×20=1.485 Gbps and gives the result to a transmission signal generating section 22. Then the serial data DSY are converted into a transmission signal STY that is an electric signal or an optical signal and the resulting signal is transmitted. A P/S conversion section 23 applies P/S conversion to 20-bit word stream data DZC (20) to form serial data DSC whose bit transmission rate is 74.25 Mbps×20=1.485 Gbps and gives the result to a transmission signal generating section 24. Then the serial data DSC are converted into a transmission signal STC that is an electric signal or an optical signal and the resulting signal is transmitted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The invention described in the claims of the present application forms serial data based on 10-bit word string data of a plurality of channels, representing signal information such as video signal information, for example. The present invention relates to a data transmission method for transmitting data to be transmitted through a transmission path, and a data transmission apparatus provided for implementing the method.

[0002]

2. Description of the Related Art In the field of transmission of digital data including information data representing signal information such as video signal information, digital data is converted into serial data.
A system that obtains an electric signal based on the serial data and transmits it through a transmission line formed using a coaxial cable or twisted pair line, or digital data as serial data, and converts the serial data into an optical signal. A system for converting the data and transmitting the converted data through a transmission line formed by using an optical fiber has been put to practical use.

On the other hand, in the field of video signals, transmission information
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.

[0004] Y, HD digital picture signal of P _B / P _R signal format is a signal for interlaced scanning each frame image is formed by being divided into a first field image and the second field image, for example, It follows the data format as shown in FIG. The data format shown in FIG. 8 includes a luminance signal data sequence (Y data sequence DY (10)) representing a luminance signal component in a video signal as shown in FIG. 8A and a data format as shown in FIG. 8B. the color difference signal data sequence representing the color difference signal component in the video signal (P _B / P _R data sequence DC (1
0)) and the Y data series DY (10) and P _B
/ P each of _R data series DC (10), each of the word data from which it is formed is a 10-bit configuration, also, the word transmission rate, for example, 74.25MB
ps. FIG. 8A shows a Y data series D
The horizontal blanking period in each horizontal period in Y (10) and a portion corresponding to a part of the video data period before and after the horizontal blanking period are shown, and FIG. 8B shows P _B / P
A horizontal blanking period in each horizontal period in the _R data series DC (10) and a portion corresponding to a part of the video data period before and after the horizontal blanking period are shown.

[0005] In the Y data series DY (10), four words (3FF (Y), 000) each having a 10-bit configuration are provided immediately before a portion corresponding to each video data period.
(Y), 000 (Y), XYZ (Y); 3FF and 00
0 is a hexadecimal representation, and (Y) is a Y data series DY (1
0) indicates that it is the middle word. ) Timing reference code data (SAV: Start of Active V)
ideo), and four words (3FF (Y), 000 (Y), 000 (Y), XY) each having a 10-bit configuration immediately after the portion corresponding to each video data period.
Z (Y)) of the timing reference code data (EA
V: End of Active Video). Similarly,
Even in the P _B / P _R data series DC (10), four words (3FF (C), 000 (C),
000 (C), XYZ (C); 3FF and 000 are 16
A Susumu display, (C) is P _B / P _R data sequence DC (1
0) indicates that it is the middle word. ) Consisting of SA
V, and immediately after the portion corresponding to each video data period, four words (3FF (C), 000 (C), 000 (C), XYZ) each having a 10-bit configuration.
(C)) is provided. Of course, each of EAV and SAV in Y data series DY (10) is arranged in a portion corresponding to each horizontal blanking period in Y data series DY (10), and P _B / P _R data series D
Each of EAV and SAV in C (10) is P _B / P _R
The data sequence DC (10) is allocated to a portion corresponding to each horizontal blanking period.

[0006] Also, HD digital video signals in the G, B, and R signal formats are also used as interlaced scanning signals.
It follows the data format as shown in FIG. The data format shown in FIG. 9 is a red primary color signal data sequence (R data sequence D) representing a red primary color signal component in a video signal as shown in FIG.
R (10)), a green primary color signal data sequence (G data sequence DG (10)) representing a green primary color signal component in a video signal, as shown in FIG. 9B, and as shown in FIG. 9C. , A blue primary color signal data sequence (B data sequence DB (1
0)), and each of the R data series DR (10), the G data series DG (10) and the B data series DB (10) has a 10-bit word data forming each of them, The word transmission rate is, for example, 74.25 MBps. Then, A in FIG.
B and C respectively include a horizontal blanking period in each of the horizontal periods in the R data series DR (10), the G data series DG (10), and the B data series DB (10), and a video data period before and after the horizontal blanking period. The parts corresponding to the parts are shown.

In each of the R data series DR (10), G data series DG (10) and B data series DB (10), each has a 10-bit structure immediately before a portion corresponding to each video data period. 4 words (3FF (R),
000 (R), 000 (R) and XYZ (R) ((R)
Represents a word in the R data sequence DR (10). ), 3FF (G), 000 (G), 000
(G) and XYZ (G) ((G) are G data series DG
(10) Indicates that the word is inside. ) Or 3FF (B), 000 (B), 000 (B) and X
YZ (B) ((B) represents a word in the B data sequence DB (10))), and a timing reference code data (SAV) composed of a portion corresponding to each video data period. , Four words (3FF (R), 000 (R), each having a 10-bit configuration)
000 (R) and XYZ (R), 3FF (G), 000
(G) 000 (G) and XYZ (G), or 3
FF (B), 000 (B), 000 (B) and XYZ
(B)), the timing reference code data (EA
V). Of course, R data series DR (10), G
Data series DG (10) and B data series DB (10)
Of the R data series DR (10), the G data series DG (10), and the B data series DB (10) are respectively allocated to portions corresponding to the respective horizontal blanking periods.

[0008]

An HD digital video signal as described above, for example, Y, Y for interlaced scanning is used.
P _B / P when HD digital video signal of the _R signal format is transmitted, Y data sequence DY and (10) P _B / P
_{The R} data series DC (10) corresponds to each EAV and SA
The word multiplexing process is performed under the condition that the portion corresponding to the horizontal blanking period in which V is arranged is synchronized,
For example, if the word transmission rate is 74.25 MBps × 2 =
A word multiplexed data sequence is formed as 10-bit word sequence data of 148.5 MBps, and this word multiplexed data sequence is converted into serial data and transmitted. Thus, Y, bit-rate when actual transmission of P _B / P _R signal format HD digital video signal of, for example, 148.5 MBps × 10 = 1.485
bps.

[0009] The Y, P used for interlaced scanning as described above.
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 an HD digital video signal in a signal format, when it is transmitted, the Y data series DY (10) and P _B /
P _R data sequence DC (10) and the word multiplexing process is obtained is subjected, 148.5MBp word transmission rate
A word multiplexed data sequence, which is 10-bit word sequence data with s × 2 = 297 MBps, is formed, and this word multiplexed data sequence is converted into serial data and transmitted, and is therefore used for progressive scanning. T, P
Bit transmission rate of when actual transmission of _B / P _R signal format HD digital video signal of, 297MBps ×
10 = 2.97 Gbps.

[0011] 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.

Therefore, the above-mentioned Y, P for the progressive scanning are used.
_B/ P_RData format such as HD digital video signal
Already practical for transmitting digital word string data
, For example, Y,
P_B/ P_RFor transmission of signal format HD digital video signals
Circuit elements including P / S converters and S / P converters used
If it is possible to use circuit elements including
Circuit element including a simple P / S converter and an S / P converter
Saves a lot of time and cost required for the development of circuit elements, etc.
Y, P for sequential scanning_B/ P_RSignal format
Digital word string data such as HD digital video signals
Means to make data transmission relatively easy.
It can be done with. However, for progressive scanning
T, P _B/ P_RSignal format of HD digital video signal
Digital word string data, for example,
Y, P for scanning_B/ P_RHD digital signal format
The existing P / S converter used for transmitting video signals
Utilizing circuit elements including S / P conversion unit
Implements a transmission system that can transmit data
No example is found. In addition, such a transmission system
There is no literature describing the related technology.

[0013] In view of the foregoing points, The invention described in the claims of the present application, for example, Y, which is a for sequential scanning as described above, digital as the P _B / P _R signal format HD digital video signal Provided is a data transmission method and a data transmission apparatus provided for implementing word string data that can be transmitted by means that can be prepared relatively easily without requiring the development of new circuit elements and the like.

[0014]

The data transmission method according to the invention described in any one of claims 1 to 8 in the claims of the present application has a method in which each has a first word transmission rate. A second word transmission lower than the first word transmission rate, wherein each of the N (N is an integer of 2 or more) channels of 10-bit word string data includes replacement of a specific 10-bit word group with a specific 20-bit word group; Conversion into 20-bit word string data having a second rate, to form N-channel 20-bit word string data, each having a second word transmission rate, P for each
/ S conversion processing, and the obtained N-channel serial data is transmitted for transmission through N transmission paths.

[0015] In particular, the data transmission method according to the invention described in claim 2 of the present application is a method of forming N-channel 20-bit word string data each having a second word transmission rate. With the provision of a word data transmission unit for transmitting a specific 20-bit word group, one of N channels each having a first word transmission rate is provided.
Each of the predetermined unit sections for each of the 0-bit word string data is alternately and repeatedly written to each of the two memory means according to the write control signal having the first frequency, and each of the two memory means is respectively written. Of the unit division written to the memory device in accordance with the read control signal having the second frequency lower than the first frequency, the conversion into the 20-bit word string data, and the specific 20-bit word from the word data transmission unit. This is performed by selectively taking out the output from each of the group and the two memory means.

The data transmission apparatus according to any one of the ninth to twelfth aspects of the present invention provides an N-channel data transmission apparatus having N-channel transmission rates each having a first word transmission rate. Conversion of each of the bit word string data to 20-bit word string data having a second word transmission rate lower than the first word transmission rate, including replacing a specific 10-bit word group with a specific 20-bit word group And data conversion means for forming N-channel 20-bit word string data each having the second word transmission rate, and P / N-channel 20-bit word string data obtained from the data conversion means. A plurality of P / S conversion means for performing S conversion processing to obtain N-channel serial data; Configured to include a data transmission means for transmitting to be transmitted through the respective N pieces transmission path, the.

[0017] In particular, in the data transmission device according to the invention described in claim 10 of the present application, the data conversion means includes a word data transmission unit for transmitting a specific 20-bit word group, and Each of the predetermined unit sections for each of the N-channel 10-bit word string data having the word transmission rate is written alternately and repeatedly according to the write control signal having the first frequency.
Two memory means for performing a conversion read into 20-bit word string data in accordance with a read control signal having a second frequency lower than the first frequency with respect to the written unit section; Data selection for selectively extracting the specific 20-bit word group and the read output from each of the two memory means to form N-channel 20-bit word string data each having the second word transmission rate. Extraction means.

A data transmission method according to any one of claims 1 to 8 in the claims of the present application as described above, and claims 9 to 9 in the claims of the present application. In the data transmission apparatus according to the invention described in any one of the above items 12, each of the N-channel 10-bit word string data each having the first word transmission rate is, for example, described in claim 2. As in the data transmission method according to the described invention and the data transmission apparatus according to the invention described in claim 10, a N-channel 10-bit data transmission unit for transmitting a specific 20-bit word group is provided. Each of the predetermined unit sections for each of the word string data is alternately repeated in each of the two memory means according to the write control signal having the first frequency. Is incorporated can, 20 in accordance with the read control signal having two for each written units sections of memory means, a second frequency lower than the first frequency
The conversion readout to bit word string data is performed, and the specific 20-bit word group from the word data transmission unit and the readout output from each of the two memory means are selectively taken out, so that each of them becomes the second. Is converted to N-channel 20-bit word string data having a word transmission rate of Then, the obtained 20-bit word string data of N channels is converted into N by P / S conversion processing.
Channels are converted to serial data, which are transmitted to be transmitted through N transmission paths, respectively.

Therefore, for example, Y,
P _B / P _R signal format as the HD constituting the digital video signal Y data sequence and P _B / P _R data series, each of N-channel having a first word transmission rate 1
N based on 0-bit word string data, each having a second word transmission rate lower than the first word transmission rate.
P / S conversion processing for each of the 20-bit word sequence data channel, and thereby the transmission of serial data of N channels obtained, for example, is the use interlaced scanning Y, the P _B / P _R signal format Existing circuit elements, such as integrated circuit (IC) elements provided for the transmission of HD digital video signals, can be used effectively, thus, for example, Y, P _B / P for progressive scanning. Transmission of digital word string data such as HD digital video signals in the _R signal format can be performed by means that can be arranged relatively easily without the need for developing new circuit elements and the like.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an example of a data transmission method according to any one of claims 1 to 7 in the claims of the present application. An example of a data transmission device according to the invention described in any one of claims 9 to 12 will be described.

In the example shown in FIG. 1, each is formed in accordance with a data format as shown in FIGS.
Are 10-bit word sequence data to 148.5 MBps, are sequentially with scanning Y, Y data sequence DY constituting the HD digital picture signal of P _B / P _R signal format
(10) and the P _B / P _R data series DC (10) are supplied to the data conversion section 10 under the condition that the portions corresponding to the horizontal blanking period in which each EAV and SAV are arranged are synchronized. .

In the Y data series DY (10), in the portion corresponding to each horizontal blanking period, EAV
4 words each having a 10-bit configuration (3FF
(Y), 000 (Y), 000 (Y) and XYZ
(Y)) and 10 SAVs each.
Four words (3FF (Y), 000) having a bit configuration
(Y), 000 (Y) and XYZ (Y)). Similarly, P _B / P _R data sequence DC (10)
However, in the portion corresponding to each horizontal blanking period, each EAV has a 10-bit configuration.
Words (3FF (C), 000 (C), 000 (C) and XYZ (C)) are arranged, and four words (3FF (C), 3FF (C),
000 (C), 000 (C) and XYZ (C)).

Y data series DY (10) and P _B / P _R
Each word transmission rate (1) of the data series DC (10)
148.5 MHz corresponding to 48.5 MBps)
Clock pulse signal CA having a and, Y data sequence DY (10) and P _B / P _R data sequence DC (10) is a for sequential scanning constituting Y, HD digital P _B / P _R signal format A horizontal synchronization signal SH and a vertical synchronization signal SV for setting a horizontal cycle and a vertical cycle in a video signal are also:
The data is supplied to the data converter 10.

In the data converter 10, the clock pulse signal CA, the horizontal synchronizing signal SH and the vertical synchronizing signal SV
Is supplied to the control signal forming unit 11. Control signal forming unit 11, based on the horizontal synchronizing signal SH and the vertical synchronous signal SV, Y data sequence DY (10) and P _B / P _R data sequence DC (10) control signal synchronized with each frame period in each of CSF and Y data series DY (10)
EAV in the horizontal blanking period in and P _B / P each line period in each of _R data series DC (10)
And a control signal CAV synchronized with the SAV, and further, based on the clock pulse signal CA, write control for setting the frequency to 148.5 MHz, which is provided for data writing and data reading in a memory unit described later. A signal QW and a read control signal QR having a frequency of 148.5 / 2 = 74.25 MHz are formed.

The control signal CSF obtained in the control signal forming section 11
And 13. The switch 12 has a movable contact 12
It has a a a selective contact 12b and 12c, the movable contact 12a is controlled by the control signal CSF, Y data sequence DY (10) and P _B / P _R data sequence DC
The operation of alternately connecting to the selection contacts 12b and 12c is repeated for each frame period in each of (10).
The switch 13 includes a movable contact 13 a and a selection contact 13.
b and 13c, and the movable contact 13a is controlled by the control signal CSF to generate the Y data series DY (1
0) and in each frame period in each of the P _B / P _R data sequence DC (10), and repeats the operations alternately connected to the selective contact 13b and 13c. The selection contacts 12b and 12c of the switch 12 have memory units 14A and 14B
Are connected to each other, and the selection contact 13b of the switch 13 is
And 13c are connected to memory units 15A and 15B, respectively.

Under these circumstances, the Y data series DY (10) supplied to the data converter 10 is controlled by the control signal CSF
1 having movable contact 12a controlled by
2 allows each frame period portion to be switched
Are alternately supplied to the memory units 14A and 14B connected to the selection contacts 12b and 12c, respectively. The P _B / P _R data series DC (10) supplied to the data converter 10 is changed by the switch 13 having the movable contact 13a controlled by the control signal CSF.
Each frame period portion corresponds to the selection contact 1 of the switch 13.
Memory units 15A and 15A connected to 3b and 13c, respectively.
The state of being alternately supplied to 5B is repeated. Thereby, for example, each odd frame period part in the Y data series DY (10) is sequentially supplied to the memory unit 14A, and each even frame period part in the Y data series DY (10) is sequentially stored in the memory unit 14B. are supplied, also, P _B / P _R data sequence DC (10) each odd frame period portion in is supplied to a sequential memory unit 15A, each even frame period in P _B / P _R data sequence DC (10) The parts are sequentially supplied to the memory unit 15B.

The memory units 14A, 14B, 15A and 15
B, the frequency from the control signal forming unit 11 is set to 14
Write control signal QW and frequency of 8.5 MHz
A read control signal QR at 4.25 MHz is supplied.
In the memory section 14A, the frequency is set to 148.
In accordance with the write control signal QW of 5 MHz, the writing of each odd frame period portion in the Y data sequence DY (10) is sequentially performed, and the read control signal of each written odd frame period portion having a frequency of 74.25 MHz. According to the QR, the data is read out as 20-bit word string data.
In accordance with the write control signal QW of 8.5 MHz, the writing of each even frame period portion in the Y data sequence DY (10) is sequentially performed, and the written even frame period portion is read at a frequency of 74.25 MHz. According to the control signal QR, the data is read out as 20-bit word string data. Further, in the memory portion 15A, with sequentially writes P _B / P _R data sequence each odd frame period portion of the DC (10) in accordance with the write control signal QW to 148.5MHz frequency, each written The frequency of the odd frame period portion is set to 74.25 MH.
According to the read control signal QR as z, the data is read as 20-bit word string data, and the write control signal Q with a frequency of 148.5 MHz
Each even frame period portion in the P _B / P _R data series DC (10) according to W is sequentially written, and each written even frame period portion is read in accordance with a read control signal QR having a frequency of 74.25 MHz. 2
Read as 0-bit word string data.

That is, in the memory sections 14A and 14B, as shown in FIG. The state where data is alternately written to a period 1TF corresponding to one frame period in DY (10) is repeated, and the Y data series DY is stored in the memory unit 14A.
Each odd frame period portion of (10) is sequentially written,
Each even frame period portion of the Y data series DY (10) is sequentially written into the memory unit 14B.

At the same time, in memory section 14A, write control signal QW having a frequency of 148.5 MHz
Y data sequence DY (10) written there according to
Each odd frame period portion has a frequency of 74.25 MH
The data is read as 20-bit word string data in accordance with a read control signal QR which is set as z. Thereby, the memory unit 14
From A, 20-bit word string data for one frame period based on each odd frame period portion of the Y data series DY (10) is sequentially obtained, and a read output DYO (20) formed by a series of these is obtained. Also, the memory unit 1
In 4B, each even frame period portion of Y data series DY (10) written therein in accordance with write control signal QW having a frequency of 148.5 MHz has a frequency of 7
The data is read as 20-bit word string data according to a read control signal QR of 4.25 MHz. Thereby,
From the memory section 14B, 20-bit word string data for one frame period based on each even frame period portion of the Y data series DY (10) is sequentially obtained, and a read output DYE (20) formed by a series thereof is obtained. Can be

In the memory units 15A and 15B,
Is P, as shown in FIG. _B/ P_RData series
Each frame period portion of DC (10) is P_B/ P_RDay
One frame period in the data sequence DC (10).
A state where data is written alternately in the period 1TF is repeated.
And P is stored in the memory unit 15A._B/ P_RData series DC (1
0) are sequentially written in each odd frame period,
It is P_B/ P_REach of the data series DC (10)
Even frame period portions are sequentially written.

At the same time, in memory section 15A, write control signal QW having a frequency of 148.5 MHz is provided.
P _B / P _R data sequence DC written therein in accordance with
Each odd frame period part of (10) has a frequency of 74.
The data is read as 20-bit word string data according to a read control signal QR of 25 MHz. Thus, from the memory unit 15A, one frame period based on each odd frame period portion of the P _B / P _R data sequence DC (10) 2
0-bit word string data is sequentially obtained, and a read output DCO (20) formed by a series thereof is obtained.
In the memory unit 15B, the frequency is set to 148.5.
Each of the even frame periods of the P _B / P _R data sequence DC (10) written therein according to the write control signal QW having a frequency of 74 MHz is a 20-bit word string data according to the read control signal QR having a frequency of 74.25 MHz. Is read as As a result, P _B /
P _R data sequence DC (10) 20-bit word sequence data for one frame period based on each even frame period portions are sequentially obtained, the read output DCE formed by their succession (20) is obtained.

The read outputs DYO (20) and DYE (20) from the memory sections 14A and 14B are supplied to the data selection / extraction section 16. Also, the memory units 15A and 15B
The read outputs DCO (20) and DCE (20) from
The data is supplied to the data selection / extraction unit 17.

Each of the data selection / extraction sections 16 and 17 is also supplied with reference word data DSW sent from the word data sending section 18. Reference word data DSW
Sets its word transmission rate to 74.25 MBps,
It is a specific 20-bit word group composed of a plurality of 20-bit word data to which a predetermined code is given.

The reference word data DSW which is a specific 20-bit word group is, for example, a Y data series DY (10)
Of the EAV and SAV included in the
0 bit word (3FF (Y), 000 (Y), 000)
(Y) and XYZ (Y)) and P _B / P _R data series DC
Four 10-bit words (3FF (C), 000) forming each of the EAV and SAV included in (10)
(C), 000 (C) and XYZ (C)), four 20-bit words, 3FF: 3FF
h, 000: 000 h, 000: 000 h and XYZ:
XYZh (h represents hexadecimal notation) is sequentially arranged. The transmission of the reference word data DSW from the word data transmission unit 18 is as follows.
It is controlled by a control signal CWD supplied from the control signal forming unit 11 to the word data transmitting unit 18. Control signal C
WD is assumed that synchronization with the control signal CAV synchronized with EAV and SAV in the horizontal blanking period in the Y data sequence DY (10) and P _B / P each line period in each of _R data series DC (10) You.

The data selection / extraction section 16 receives the Y data series DY (10) and P _B / P _R from the control signal forming section 11.
A control signal CSF synchronized with each frame period in each of the data series DC (10) is supplied, and a control signal CAV is supplied. And the data selection and extraction unit 1
6, the memory unit 14 according to the control signal CSF.
A read output DYO (20) from A and read output DYE (20) from memory unit 14B are converted into Y data series DY (1
0), an operation for alternately taking out a period corresponding to one frame period is performed, and during the taking out period for each of the readout outputs DYO (20) and DYE (20), the Y data series is outputted in accordance with the control signal CAV. EAV included in the horizontal blanking period in each line period of DY (10)
And during the period corresponding to each of SAV and SAV, the operation of extracting the reference word data DSW transmitted from the word data transmission unit 18 under the control of the control signal CWD is performed.

As a result, as shown in FIG. 2B, a fetched output including a readout output (14A readout) from the memory unit 14A and a readout output (14B readout from the memory unit 14B) are output from the data selecting and fetching unit 16. And readout outputs including the readout outputs) are alternately obtained for a period 1TF corresponding to one frame period in the Y data series DY (10), thereby forming 20-bit word string data DXY (20). As shown in FIG. 2C, each of the takeout output including the 14A readout output and the takeout output including the 14B readout output is Y in each of the periods 1TL corresponding to one line period of the Y data series DY (10). Data series DY (1
0), the reference word data DS corresponding to the EAV included in
W, 14A read output (or 14B read output), reference word data DSW corresponding to SAV included in Y data series DY (10), and 14A read output (or 14B read output) are sequentially arranged. You.

The data selection / extraction section 17 also sends the Y data series DY (10) and P _B
/ P with _R data sequence DC (10) control signals CSF synchronized with each frame period in each of is supplied, the control signal CAV is supplied. Then, in the data selection / extraction section 17, the read output DCO (20) from the memory section 15A and the memory section 1 in response to the control signal CSF.
Performs read output DCE (20) and the operation of taking out the period addressed alternately corresponding to one frame period in the P _B / P _R data sequence DC (10) from 5B, and the read output DC
O (20) and during removal period for each of DCE (20), in response to the control signal CAV, EAV and included in the horizontal blanking period in each line period of the P _B / P _R data sequence DC (10) During a period corresponding to each of the SAVs, an operation of extracting the reference word data DSW transmitted from the word data transmission unit 18 under the control of the control signal CWD is performed.

As a result, as shown in FIG. 2E, a fetch output including a read output (15A read output) from the memory unit 15A and a read output (15B read from the memory unit 15B) are output from the data selective fetch unit 17. and the retrieval output including a read output), 1 in the P _B / P _R data sequence DC (10)
Alternately obtained for the period 1TF corresponding to the frame period,
With them, 20-bit word string data DXC (20)
Is formed. Extraction output including 15A readout output and 15
Extraction output Each of the containing B read output, the as shown in F of FIG. 2, in each of the periods 1TL corresponding to one line period of the P _B / P _R data sequence _{DC (10), P B /} P
_The reference word data DSW corresponding to the EAV included in the _R data series DC (10), 15A read output (or 1
5B read output), the reference word data DSW corresponding to SAV included in the P _B / P _R data sequence DC (10), and, 15A read out (or 15B reading output) is assumed to be sequentially arranged.

The 20-bit word string data DXY (20) obtained from the data selection / extraction section 16 is supplied to an error detection code data exchange section 19. The error detection code data replacement unit 19 converts the error detection code data based on the error detection code data YCR0 and YCR1 in the Y data sequence DY (10) included in the 20-bit word sequence data DXY (20) into 20-bit word sequence data. Replaced with new error detection code data conforming to DXY (20),
The bit word string data DZY (20) is formed. The 20-bit word string data DZY (20) is transmitted as output data from the data conversion unit 10.

The 20-bit word string data DXC (20) obtained from the data selection / extraction section 17 is supplied to the error detection code data exchange section 20. The error detection code data replacement unit 20 outputs the 20-bit word string data DXC (2
Contained in 0), an error detection code data based on the error detection code data CCR0 and CCR1 in P _B / P _R data sequence DC (10), 20-bit word sequence data D
20-bit word string data DZC (20) is formed by replacing with new error detection code data conforming to XC (20). This 20-bit word string data DZC (2
0) is also transmitted as output data from the data conversion unit 10.

As described above, the data conversion unit 10
Each has a word transmission rate of 148.5 MBps2
Is a 10-bit word sequence data channel Y data sequence DY (10) and P _B / P _R data sequence DC (1
0), for each of the specified 10-bit word groups EAV and SAV, for example, as shown in FIG. 3A, for example, as shown in FIG. Reference word data D as a word group
148. Word transmission rate including replacement by SW
Conversion to 20-bit word string data of 74.25 MBps lower than 5 MBps is performed, and each of them is converted to 20-channel word string data having a word transmission rate of 74.25 MBps.
Bit word string data DZY (20) and DZC (2
0).

The 20-bit word string data DZY (20) derived from the data conversion unit 10 is
Supplied to The P / S conversion unit 21 performs P / S conversion on the 20-bit word string data DZY (20) to increase the bit transmission rate based on the 20-bit word string data DZY (20) to 74.25 MBps × 20. = 1.4
The serial data DSY of 85 Gbps is formed, and the serial data DSY is supplied to the transmission signal forming unit 22. The transmission signal forming unit 22 converts the serial data DSY into
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 STY which is an optical signal suitable for the formed data transmission path and transmitted. Thereby, transmission of the serial data DSY is performed.

Further, 2 derived from the data conversion unit 10
The 0-bit word string data DZC (20) is supplied to the P / S converter 23. In the P / S converter 23, 2
The P / S conversion is performed on the 0-bit word string data DZC (20) to increase the transmission rate based on the 20-bit word string data DZC (20) to 74.25 MBps × 20 = 1.4.
The serial data DSC of 85 Gbps is formed, and the serial data DSC is supplied to the transmission signal forming unit 24. The transmission signal forming unit 24 converts the serial data DSC into
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 STC which is an optical signal suitable for the formed data transmission path and transmitted. Thereby, transmission of the serial data DSC is performed.

In the data transmission apparatus shown in FIG. 1 as described above, the P / S converter 21 and the transmission signal generator 2
2, and each of the P / S conversion unit 23 and the transmission signal forming unit 24 sets the bit transmission rate of the word transmission rate of 74.25 MBps to 20.
Since the data is converted into serial data of 85 Gbps and transmitted, the P / S conversion unit 21 and the transmission signal formation unit 22 and the P / S conversion unit 23 and the transmission signal formation unit 24 are, for example, Y, P for interlaced scanning
_B / P _R signal format HD digital video signal integrated circuits that are provided for the transmission of the (IC) devices can be constructed by effectively utilizing. Therefore, if the word transmission rate is 1
Y, P _B / P _R for progressive scanning composed of a Y data sequence DY (10) formed of 10-bit word string data of 48.5 MBps and a P _B / P _R data sequence DC (10) HD digital video signals in signal format
This can be done by means that can be prepared relatively easily without the need to develop new circuit elements and the like.

FIG. 4 is transmitted from the example of the data transmission apparatus shown in FIG. 1 according to the example of the data transmission method according to the invention described in any one of claims 1 to 7 in the claims of the present application. , Y, P _B / P _R for sequential scanning
Forming the HD digital picture signal of the signal format Y data sequence DY (10) and P _B / P _R data sequence DC (1
FIG. 1 shows an example of a data receiving apparatus that receives transmission signals STY and STC corresponding to serial data DSY and DSC based on 0), respectively.

In the example of the data receiving apparatus shown in FIG. 4, 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. Receiving units 31 and 32 for receiving transmission signals STY and STC, which are optical signals suitable for the data transmission path, respectively. When receiving the transmission signal STY, the receiving unit 31 reproduces the serial data DSY based on the received transmission signal STY, and supplies the reproduced serial data DSY to the reference data detection / S / P conversion unit 33. In addition, the receiving unit 32
When receiving the transmission signal STC, the received transmission signal S
The serial data DSC based on the TC is reproduced, and the reproduced serial data DSC is supplied to the reference data detection / S / P converter 34.

In the reference data detection / S / P converter 33, 3F, which is four 20-bit words constituting the reference word data DSW in the serial data DSY, is used.
F: 3FFh, 300000h, 000000h, and XYZ: XYZh are converted into serial data and 3FFh: 3FFh, 000000h and 000000h are converted into serial data. , And word synchronization is performed based on the detected reference data, and S is added to the serial data DSY.
/ P conversion is performed to obtain 20-bit word string data DZY (20) based on the serial data DSY with a word transmission rate of 74.25 MBps. The 20-bit word string data DZY (20) obtained from the reference data detection / S / P converter 33 is
Supplied to

The reference data detection / S / P converter 34
In the serial data DSC, four 20-bit words constituting the reference word data DSW are 3FF: 3FFh, 0,000,000h, 00:00:00.
0FF and 3FF: 3FFh in the portion obtained by converting XYZ: XYZh into serial data, 3,000,000
h and 000: 000h are converted into serial data, the part is detected as reference data, and word synchronization is performed based on the detected reference data to obtain serial data DSC.
Is subjected to S / P conversion to obtain 2 based on the serial data DSC.
The 0-bit word string data DZC (20) is obtained with a word transmission rate of 74.25 MBps. The 20-bit word string data DZC (20) obtained from the reference data detection / S / P converter 34 is supplied to the specific word detector 36.

In the specific word detecting section 35, the 20-bit word string data DZY (20) is supplied to the data converting section 37, and the reference word data DSW included in the 20-bit word string data DZY (20) is supplied thereto. 3F, which are the four 20-bit words that make up
F: 3FFh, 000: 000h, 00000: 000h and XYZ: XYZh are detected as specific words, and the resulting detection output data DDY is sent out. Detection output data D obtained from specific word data detection unit 35
DY is supplied to the data conversion unit 37.

In the specific word data detecting section 36,
Through this, 20-bit word string data DZC (20)
Is supplied to the data conversion unit 37, and the four 20-bit words constituting each reference word data DSW included in the 20-bit word string data DZC (20) are 3FF: 3FFh, 000: 000000h, and 00000: 000.
h and XYZ: XYZh are detected as specific words,
The resulting detection output data DDC is transmitted.
The detection output data DDC obtained from the specific word data detection unit 36 is also supplied to the data conversion unit 37.

The data conversion unit 37 has a frequency 7 corresponding to a word transmission rate of 74.25 MBps for each of the 20-bit word string data DZY (20) and DZC (20).
A clock pulse signal CB having 4.25 MHz is also supplied. In the data conversion unit 37, the detection output data DDY from the specific word data detection unit 35 and the detection output data DD from the specific word data detection unit 36
C and the clock pulse signal CB are supplied to the control signal forming unit 38.

The control signal forming section 38 performs the following based on the detection output data DDY from the specific word data detecting section 35.
A control signal CSFY synchronized with each frame period in the 0-bit word string data DZY (20) is formed, and based on the detection output data DDC from the specific word data detection unit 36, the 20-bit word string data DZC
Control signal C synchronized with each frame period in (20)
Write control with a frequency of 74.25 MHz, which is provided for writing and reading data in a memory unit, which will be described later, based on a clock pulse signal CB that forms an SFC and has a frequency of 74.25 MHz. Signal Q
WY and QWC and frequency are 74.25 × 2 = 14
The read control signals QRY and QRC at 8.5 MHz are formed. At this time, the write control signals QWY and QWC and the read control signals QRY and QRC are obtained from the skew absorption control signal forming section which is built in the control signal forming section 38 and supplied with the detection output data DDY and DDC. , The skew absorption control signal CSK has been applied.

In the skew absorption control signal forming section incorporated in the control signal forming section 38, the detection output data DDY from the specific word data detecting section 35 and the detection output data DDC from the specific word data detecting section 36 are interposed. A time difference between the transmission signals STY and STC is detected based on the time difference, and a skew absorption control signal CSK corresponding to the detected time difference is formed.

The control signals CSFY and CSFC obtained in the control signal forming section 38 are respectively
Are supplied to the switches 41 and. The switch 41 has a movable contact 41a and selection contacts 41b and 41c. The movable contact 41a is controlled by a control signal CSFY to generate 20-bit word string data DZY.
For each frame period in (20), the selection contact 41b
And 41c are alternately connected. The switch 42 includes a movable contact 42a and selection contacts 42b and 42c.
And the movable contact 42a receives the control signal CSFC
, And the 20-bit word string data DZC
For each frame period in (20), the selection contact 42b
And 42c are alternately connected. The selection contacts 41b and 41c of the switch 41 are connected to the memory unit 43.
A and 43B are connected respectively, and the selection contacts 42b and 42c of the switch 42 are connected to the memory units 44A and 44B, respectively.
B are connected respectively.

Under these circumstances, the 20-bit word string data DZY (20) supplied to the data converter 37 is
By the switch 41 having the movable contact 41a controlled by the control signal CSFY, a state where each frame period portion is alternately supplied to the memory units 43A and 43B connected to the selection contacts 41b and 41c of the switch 41, respectively. Repeated. The 20-bit word string data DZC (20) supplied to the data conversion unit 37 has its frame period portion converted by the switch 42 having the movable contact 42a controlled by the control signal CSFC.
The state of being alternately supplied to the memory units 44A and 44B connected to the selection contacts 42b and 42c of the switch 42 is repeated. Thereby, for example, each odd frame period portion in the 20-bit word string data DZY (20) is sequentially supplied to the memory unit 43A, and
Each even frame period portion in the 0-bit word string data DZY (20) is sequentially supplied to the memory unit 43B,
Each odd frame period portion of the 20-bit word string data DZC (20) is sequentially supplied to the memory unit 44A, and the 20-bit word string data DZC (20) is sequentially supplied to the memory unit 44A.
Each even frame period portion in (20) is sequentially supplied to the memory unit 44B.

The write control signal QWY having a frequency of 74.25 MHz and the read control signal QRY having a frequency of 148.5 MHz are supplied from the control signal forming section 38 to each of the memory sections 43A and 43B. In the memory section 43A, each odd frame period portion in the 20-bit word string data DZY (20) is sequentially written according to the write control signal QWY having a frequency of 74.25 MHz, and each written odd frame is written. The period portion is read as 10-bit word string data in accordance with a read control signal QRY having a frequency of 148.5 MHz, and in the memory section 43B, a 20-bit word is read in accordance with a write control signal QWY having a frequency of 74.25 MHz. The writing of each even-numbered frame period portion in the column data DZY (20) is sequentially performed, and the written even-numbered frame period portion is set to a frequency of 148.
According to the read control signal QRY of 5 MHz, the data is read as 10-bit word string data.

A write control signal QWC having a frequency of 74.25 MHz and a read control signal QRC having a frequency of 148.5 MHz are supplied from the control signal forming section 38 to each of the memory sections 44A and 44B. In the memory section 44A, writing of each odd frame period portion of the 20-bit word string data DZC (20) in accordance with the write control signal QWC having a frequency of 74.25 MHz is sequentially performed, and each written odd frame is written. The period portion is read as 10-bit word string data according to a read control signal QRC having a frequency of 148.5 MHz, and in the memory section 44B, a 20-bit word is read according to a write control signal QWC having a frequency of 74.25 MHz. The writing of each even frame period portion in the column data DZC (20) is sequentially performed, and the frequency of each written even frame period portion is set to 148.
According to the read control signal QRC of 5 MHz, the data is read as 10-bit word string data.

That is, in the memory sections 43A and 43B, each frame period portion of the 20-bit word string data DZY (20) corresponds to the 20-bit word string data DZY (2
0) is repeated alternately for a period corresponding to one frame period, and the memory section 43A
, The odd frame period portions of the 20-bit word string data DZY (20) are sequentially written, and the even frame period portions of the 20-bit word string data DZY (20) are sequentially written to the memory 43B.

At the same time, in memory section 43A, write control signal QW having a frequency of 74.25 MHz
Each odd frame period portion of the 20-bit word string data DZY (20) written therein according to Y is read as 10-bit word string data according to the read control signal QRY having a frequency of 148.5 MHz. As a result, 10-bit word string data for one frame period based on each odd frame period portion of the 20-bit word string data DZY (20) is sequentially obtained from the memory unit 43A, and the word transmission rate formed by a series thereof is obtained. Is read out to 148.5 MBps. Further, in memory section 43B, 20-bit word string data DZY (2) written therein according to write control signal QWY having a frequency of 74.25 MHz.
0), each even frame period portion has a frequency of 148.5.
The data is read as 10-bit word string data in accordance with a read control signal QRY at MHz. Thereby, 20-bit word string data DZY (2
0), 10-bit word string data for one frame period based on each even frame period portion is sequentially obtained, and the word transmission rate formed by the series thereof is 148.5.
A read output DYE (10) with MBps is obtained.

In the memory units 44A and 44B, each frame period portion of the 20-bit word string data DZC (20) corresponds to the 20-bit word string data DZC (2
0) is repeated alternately for a period corresponding to one frame period, and each odd-numbered frame period portion of the 20-bit word string data DZC (20) is sequentially written to the memory unit 44A. Each even frame period portion of the 20-bit word string data DZC (20) is sequentially written to 44B.

At the same time, in memory section 44A, write control signal QW having a frequency of 74.25 MHz
Each odd frame period portion of the 20-bit word string data DZC (20) written therein according to C is read as 10-bit word string data according to the read control signal QRC having a frequency of 148.5 MHz. As a result, 10-bit word string data for one frame period based on each odd frame period portion of the 20-bit word string data DZC (20) is sequentially obtained from the memory unit 44A, and the word transmission rate formed by a series thereof is obtained. Is obtained at 148.5 MBps. In the memory section 44B, the 20-bit word string data DZC (2
0), each even frame period portion has a frequency of 148.5.
The data is read as 10-bit word string data in accordance with a read control signal QRC at MHz. Thereby, 20-bit word string data DZC (2
0), 10-bit word string data for one frame period based on each even frame period portion is sequentially obtained, and the word transmission rate formed by the series thereof is 148.5.
A read output DCE (10) of MBps is obtained.

The read outputs DYO (10) and DYE (10) from the memory units 43A and 43B are supplied to a data selection / extraction unit 45. Also, the memory units 44A and 44B
The read outputs DCO (10) and DCE (10) from
The data is supplied to the data selection / extraction unit 46.

Each of the data selection / extraction sections 45 and 46
Is the reference word sent from the word data sending unit 48
Data DVW is also supplied. Reference word data DVW
Sets its word transmission rate to 148.5 MBps,
Y data series DY (10) and P _B/ P_RData series D
Form EAV or SAV included in each of C (10)
Four 10-bit words (3FF (Y), 000)
(Y) 000 (Y) and XYZ (Y), or 3
FF (C), 000 (C), 000 (C) and XYZ
(C), four 10-bit words, 3
FFh, 000h, 000h and XYZh (h is hexadecimal
Indicates that it is a display. ) Are arranged sequentially
It is assumed that

The transmission of the reference word data DVW from the word data transmitting section 48 is based on the control signal CWD supplied from the control signal forming section 38 to the word data transmitting section 48.
Controlled by V. The control signal CWDV is formed based on data obtained by subjecting the detection output data DDY and DDC obtained from the specific word detection units 35 and 36 to processing by the skew absorption control signal CSK, respectively, and the memory units 43A, 43B and 44A. Readouts DYO (10), DYE (10), DCO
(10) and reference word data DSW during the horizontal blanking period in each line period of DCE (10).
Is synchronized with

Further, each of the data selection / extraction sections 45 and 46 receives a control signal CSFS from the control signal forming section 38.
And CAVS are supplied. The control signal CSFS includes the skew absorption control signal C on the detection output data DDY and DDC.
The read outputs DYO (10) and DYE (1) are formed based on data obtained by performing the processing by SK and obtained from the memory units 43A, 43B, 44A and 44B, respectively.
0), DCO (10), and DCE (10). The control signal C
The AVS is formed based on data obtained by subjecting the detection output data DDY and DDC to processing by the skew absorption control signal CSK.
A and the readout output DYO (1
0), DYE (10), DCO (10) and DCE (1
0) is synchronized with the reference word data DSW during the horizontal blanking period in each line period.

In data selection / extraction section 45, read output D from memory section 43A in response to control signal CSFS.
YO (10) and readout output DYE from memory unit 43B
(10) and read outputs DYO (10) and DYE (1
0), an operation for alternately taking out a period corresponding to one frame period is performed, and the readout output DYO (1
0) and DYE (10) during the extraction period, respectively, in response to the control signal CAVS, the readout output DYO (1).
0) and DYE (10) during the horizontal blanking period corresponding to the reference word data DSW during the horizontal blanking period.
An operation of extracting the reference word data DVW transmitted under the control of WDV is performed.

As a result, from the data selection / extraction section 45, an extraction output including the read output from the memory section 43A and an extraction output including the read output from the memory section 43B are output from the read outputs DYO (10) and DYE (10). ) Are alternately obtained for a period corresponding to one frame period, thereby forming 10-bit word string data DCY (10). A takeout output including a readout output from the memory unit 43A and a takeout output including a readout output from the memory unit 43B are respectively readout outputs DYO (10) and DYE (1
In each of the periods corresponding to each one line period of 0), the reference word data DVW corresponding to the reference word data DSW and forming the EAV, the read output from the memory unit 43A (or the read output from the memory unit 43B). , The reference word data DVW forming the SAV, and the read output from the memory unit 43A (or the read output from the memory unit 43B) are sequentially arranged.

In the data selection / extraction section 46,
In response to control signal CSFS, read output DCO (10) from memory unit 44A and read output DCO from memory unit 44B
CE (10) and read output DCO (10) and DCE
In each of (10), an operation of alternately taking out a period corresponding to one frame period is performed, and the read output DCO
During the extraction period for each of (10) and DCE (10), in response to the control signal CAVS, the read output DCO (1
0) and DCE (10) during the horizontal blanking period corresponding to the reference word data DSW during the horizontal blanking period.
An operation of extracting the reference word data DVW transmitted under the control of WDV is performed.

As a result, from the data selection / extraction unit 46, an extraction output including the read output from the memory unit 44A and an extraction output including the read output from the memory unit 44B are output from the read output DCO (10) and the DCE (10). ) Are alternately obtained for periods corresponding to each one frame period, thereby forming 10-bit word string data DCC (10). Each of the extracted output including the read output from the memory unit 44A and the extracted output including the read output from the memory unit 44B is a period corresponding to one line period of each of the read outputs DCO (10) and DCE (10). Respectively, corresponds to the reference word data DSW, and forms the SAV corresponding to the reference word data DVW forming the EAV, the read output from the memory unit 44A (or the read output from the memory unit 44B), and the reference word data DSW. The reference word data DVW and the read output from the memory unit 44A (or the read output from the memory unit 44B) are sequentially arranged.

The 10-bit word string data DCY (10) obtained from the data selection / extraction section 45 is supplied to an error detection code data exchange section 49. The error detection code data replacement unit 49 replaces the error detection code data included in the 10-bit word string data DCY (10) with new error detection code data conforming to the 10-bit word string data DCY (10), and Transmission rate of 148.5 MBp
The Y data series DY (10), which is 10-bit word string data set as s, is reproduced, and transmitted from the data conversion unit 37.

The 10-bit word string data DCC (10) obtained from the data selection / extraction unit 46 is supplied to the error detection code data replacement unit 50. The error detection code data replacement unit 50 outputs the 10-bit word string data DCC (1
0) is replaced with new error detection code data conforming to the 10-bit word string data DCC (10), and the word transmission rate is set to 148.5.
Is a 10-bit word sequence data having a MBps P _B /
P _R data reproduced series DC (10), and sends it from the data converter 37.

FIG. 5 shows an example of a data transmission method according to any one of the first to sixth and eighth aspects of the present invention. 9 shows another example of the data transmission device according to any one of 9 to 12.

In the example shown in FIG. 5, for example, 10-bit data is formed in accordance with a data format as shown in FIGS. 9A, 9B and 9C, and each has a word transmission rate of, for example, 148.5 MBps. An R data sequence DR constituting an HD digital video signal in the form of G, B, R signals for sequential scanning, which is word string data
(10) The G data series DG (10) and the B data series DB (10) are transmitted to the data conversion unit 51 under the condition that the portions corresponding to the horizontal blanking periods in which the respective EAVs and SAVs are arranged are synchronized. Supplied.

In the R data series DR (10), in the portion corresponding to each horizontal blanking period, EAV
4 words each having a 10-bit configuration (3FF
(R), 000 (R), 000 (R) and XYZ
(R)) and 10 SAVs each.
4 words (3FF (R), 000) having a bit configuration
(R), 000 (R) and XYZ (R));
In the data series DG (10), each of the portions corresponding to each horizontal blanking period has an EAV of one.
4 words (3FF (G), 000) having a 0-bit configuration
(G), 000 (G) and XYZ (G)), and each SAV has a 10-bit configuration.
Words (3FF (G), 000 (G), 000 (G) and XYZ (G)) are arranged, and a B data series DB
In (10), in a portion corresponding to each horizontal blanking period, four words (3FF (B), 000 (B), 000) each having a 10-bit configuration as an EAV.
(B) and XYZ (B)), and SAV
4 words each having a 10-bit configuration (3FF
(B), 000 (B), 000 (B) and XYZ
(B)).

A clock pulse signal having a frequency of 148.5 MHz corresponding to the respective word transmission rates (148.5 MBps) of the R data series DR (10), the G data series DG (10), and the B data series DB (10) CA,
And R data series DR (10), G data series DG
(10) and the horizontal synchronizing signal SH and the vertical synchronizing signal SV for setting the horizontal cycle and the vertical cycle in the HD digital video signal of the G, B, and R signal format for the progressive scanning constituted by the B data series DB (10). Also the data conversion unit 51
Supplied to

In the data converter 51, the clock pulse signal CA, the horizontal synchronizing signal SH and the vertical synchronizing signal SV
Is supplied to the control signal forming unit 52. The control signal forming unit 52 generates an R data sequence DR (10) and a G data sequence DG based on the horizontal synchronization signal SH and the vertical synchronization signal SV.
(10) and the control signal CSF synchronized with each frame period in each of the B data sequence DB (10), and the R data sequence DR (10), the G data sequence DG (10), and the B data sequence DB (10). A control signal CAV synchronized with the EAV and the SAV during the horizontal blanking period in each line period in each of the lines is formed, and further, based on the clock pulse signal CA, data is written to and read from the memory unit described later. Then, a write control signal QW having a frequency of 148.5 MHz and a read control signal QR having a frequency of 148.5 / 2 = 74.25 MHz are formed.

The control signal CSF obtained in the control signal forming section 52 is
3, 54 and 55. The switch 53 has a movable contact 53a and selection contacts 53b and 53c. The movable contact 53a is controlled by a control signal CSF to generate an R data sequence DR (10) and a G data sequence DG.
The operation of alternately connecting to the selection contacts 53b and 53c is repeated for each frame period in each of (10) and the B data series DB (10). Also, the switch 54
It has a movable contact 54a and selection contacts 54b and 54c, and the movable contact 54a is controlled by a control signal CSF to generate an R data sequence DR (10), a G data sequence DG
The operation of alternately connecting to the selection contacts 54b and 54c is repeated for each frame period in each of (10) and the B data series DB (10). Further, the switch 55
Has a movable contact 55a and selection contacts 55b and 55c, and the movable contact 55a is controlled by a control signal CSF to generate an R data sequence DR (10), a G data sequence DG (10), and a B data sequence. The operation of alternately connecting to the selection contacts 55b and 55c is repeated for each frame period in each of the DBs (10).

Selection contacts 53b and 53c of the switch 53
Are connected to memory sections 57A and 57B, respectively, to the selection contacts 54b and 54c of the switch 54, and are connected to the selection contacts 55b and 55c of the switch 55. Part 58
A and 58B are respectively connected.

Under these circumstances, the R data sequence DR (10) supplied to the data conversion unit 51 is controlled by the control signal CSF
5 having movable contact 53a controlled by
3 makes each frame period part switch 53
Are alternately supplied to the memory units 56A and 56B connected to the selection contacts 53b and 53c, respectively. Further, the G data series DG (10) supplied to the data conversion unit 51 is switched by the switch 54 having the movable contact 54a controlled by the control signal CSF so that each frame period portion thereof is connected to the selection contact 54b of the switch 54 and the selection contact 54b of the switch 54. The state of being alternately supplied to the memory units 57A and 57B respectively connected to 54c is repeated. Further, the B data series DB (10) supplied to the data conversion unit 51 has its frame period portion changed by a switch 55 having a movable contact 55a controlled by a control signal CSF.
The state of being alternately supplied to the memory units 58A and 58B connected to the selection contacts 55b and 55c of the switch 55, respectively, is repeated.

Thus, for example, the R data series DR
Each odd frame period part in (10) is sequentially supplied to the memory unit 56A and the R data series DR
Each even frame period part in (10) is sequentially supplied to the memory unit 56B, and the G data series DG (1
0) are sequentially supplied to the memory unit 57A and the G data series DG (1
0) are sequentially supplied to the memory unit 57B, and are further supplied to the B data series DB (10).
Are sequentially stored in the memory unit 58.
A, and even-frame period portions in the B data series DB (10) are sequentially stored in the memory 58B.
Supplied to

The memory units 56A, 56B, 57A, 57
B, 58A and 58B respectively have a control signal forming section 52
Control signal Q with a frequency of 148.5 MHz from
W and a read control signal Q having a frequency of 74.25 MHz
R is supplied.

In the memory section 56A, the frequency is set to 14
In accordance with the write control signal QW of 8.5 MHz, writing of each odd frame period portion in the R data sequence DR (10) is sequentially performed, and reading of each written odd frame period portion is performed at a frequency of 74.25 MHz. In accordance with the control signal QR, the data is read out as 20-bit word string data. In the memory unit 56B, R is read in accordance with the write control signal QW having a frequency of 148.5 MHz.
Each even frame period portion in the data sequence DR (10) is sequentially written, and each written even frame period portion is read as 20-bit word string data according to a read control signal QR having a frequency of 74.25 MHz.

In the memory section 57A, the frequency is set to 14
In accordance with the write control signal QW of 8.5 MHz, writing of each odd frame period portion in the G data series DG (10) is sequentially performed, and reading of each written odd frame period portion with the frequency of 74.25 MHz is performed. In accordance with the control signal QR, the data is read out as 20-bit word string data. In the memory unit 57B, the G is controlled in accordance with the write control signal QW having a frequency of 148.5 MHz.
Each even frame period portion in the data sequence DG (10) is sequentially written, and each written even frame period portion is read as 20-bit word string data according to a read control signal QR having a frequency of 74.25 MHz.

In the memory section 58A, the frequency is set to 14
In accordance with the write control signal QW of 8.5 MHz, writing of each odd frame period portion in the B data series DB (10) is sequentially performed, and reading of each written odd frame period portion with the frequency of 74.25 MHz is performed. According to the control signal QR, the data is read out as 20-bit word string data. In the memory unit 58B, B is read according to the write control signal QW having a frequency of 148.5 MHz.
Each even-numbered frame period portion in the data sequence DB (10) is sequentially written, and each written even-numbered frame period portion is read as 20-bit word string data in accordance with a read control signal QR having a frequency of 74.25 MHz.

That is, in the memory sections 56A and 56B, as shown in A of FIG. 6 (t indicates time lapse), each frame period portion of the R data sequence DR (10) is converted into the R data sequence The state where data is alternately written to a period 1TF corresponding to one frame period in DR (10) is repeated, and the R data series DR is stored in the memory unit 56A.
Each odd frame period portion of (10) is sequentially written,
Each even frame period portion of the R data series DR (10) is sequentially written into the memory unit 56B.

At the same time, in memory section 56A, write control signal QW having a frequency of 148.5 MHz is set.
R data sequence DR (10) written there according to
Each odd frame period portion has a frequency of 74.25 MH
The data is read as 20-bit word string data in accordance with a read control signal QR which is set as z. Thereby, the memory unit 56
From A, 20-bit word string data for one frame period based on each odd frame period portion of the R data series DR (10) is sequentially obtained, and a read output DRO (20) formed by a series of these is obtained. Also, the memory unit 5
6B, each even frame period portion of the R data sequence DR (10) written therein in accordance with the write control signal QW having a frequency of 148.5 MHz has a frequency of 7
The data is read as 20-bit word string data according to a read control signal QR of 4.25 MHz. Thereby,
From the memory section 56B, 20-bit word string data for one frame period based on each even frame period portion of the R data series DR (10) is sequentially obtained, and a readout output DRE (20) formed by a series thereof is obtained. Can be

In the memory units 57A and 57B, as shown in FIG. 6D, the G data series DG (1
0) corresponds to the G data series DG (1).
0), addressed to a period 1TF corresponding to one frame period,
The state of being alternately written is repeated, and the memory unit 5
Each odd frame period portion of the G data sequence DG (10) is sequentially written to 7A, and each even frame period portion of the G data sequence DG (10) is sequentially written to the memory unit 57B.

At the same time, in memory section 57A, write control signal QW having a frequency of 148.5 MHz is set.
G data sequence DG (10) written there according to
Each odd frame period portion has a frequency of 74.25 MH
The data is read as 20-bit word string data in accordance with a read control signal QR which is set as z. Thereby, the memory unit 57
From A, 20-bit word string data for one frame period based on each odd frame period portion of the G data series DG (10) is sequentially obtained, and a read output DGO (20) formed by a series of them is obtained. Also, the memory unit 5
7B, each even frame period portion of the G data sequence DG (10) written therein in accordance with a write control signal QW having a frequency of 148.5 MHz has a frequency of 7
The data is read as 20-bit word string data according to a read control signal QR of 4.25 MHz. Thereby,
From the memory unit 57B, 20-bit word string data for one frame period based on each even frame period part of the G data series DG (10) is sequentially obtained, and a readout output DGE (20) formed by a series thereof is obtained. Can be

Further, in the memory units 58A and 58B, as shown in FIG.
Each frame period part of (10) is a B data series DB
Period 1TF corresponding to one frame period in (10)
The state where data is written alternately is repeated, the odd frame period portions of the B data sequence DB (10) are sequentially written to the memory unit 58A, and each of the B data sequence DB (10) is written to the memory unit 58B. Even frame period portions are sequentially written.

At the same time, in memory section 58A, write control signal QW having a frequency of 148.5 MHz is set.
B data series DB (10) written there according to
Each odd frame period portion has a frequency of 74.25 MH
The data is read as 20-bit word string data in accordance with a read control signal QR which is set as z. Thereby, the memory unit 58
From A, 20-bit word string data for one frame period based on each odd frame period portion of the B data series DB (10) is sequentially obtained, and a read output DBO (20) formed by a series of them is obtained. Also, the memory unit 5
8B, each even frame period portion of the B data sequence DB (10) written therein in accordance with a write control signal QW having a frequency of 148.5 MHz has a frequency of 7
The data is read as 20-bit word string data according to a read control signal QR of 4.25 MHz. Thereby,
From the memory unit 58B, 20-bit word string data for one frame period based on each even frame period portion of the B data series DB (10) is sequentially obtained, and a read output DBE (20) formed by a series thereof is obtained. Can be

The read outputs DRO (20) and DRE (20) from the memory units 56A and 56B are supplied to a data selection / extraction unit 59. Also, the memory units 57A and 57B
The read outputs DGO (20) and DGE (20) from
The data is supplied to the data selection / extraction unit 60. Further, the read outputs DBO (20) and D from the memory units 58A and 58B
BE (20) is supplied to the data selection / extraction unit 61.

Each of the data selection / extraction sections 59, 60 and 61 is also supplied with the reference word data DSW sent from the word data sending section 62. Reference word data DS
W is a specific 20-bit word group having a word transmission rate of 74.25 MBps and a plurality of 20-bit word data to which a predetermined code is given.

The reference word data DSW which is a specific 20-bit word group is, for example, an R data series DR (10)
Of the EAV and SAV included in the
0 bit word (3FF (R), 000 (R), 000)
(R) and XYZ (R)), G data series DG (10)
Of the EAV and SAV included in the
0 bit word (3FF (G), 000 (G), 000
(G) and XYZ (G)) and B data series DB
Four 10-bit words (3FF (B), 000) forming each of the EAV and SAV included in (10)
(B) 000 (B) and XYZ (B)), each of which is four 20-bit words, 3FF: 3FF
h, 000: 000 h, 000: 000 h and XYZ:
XYZh (h represents hexadecimal notation) is sequentially arranged. The transmission of the reference word data DSW from the word data transmission unit 62 is as follows.
It is controlled by a control signal CWD supplied from the control signal forming unit 52 to the word data transmitting unit 62. Control signal C
WD is an R data sequence DR (10) and a G data sequence DG
(10) and EAV and S during the horizontal blanking period in each line period of the B data series DB (10).
The signal is synchronized with a control signal CAV synchronized with AV.

The data selection / extraction section 59 synchronizes with each frame period of each of the R data series DR (10), G data series DG (10) and B data series DB (10) from the control signal forming section 52. The control signal CSF is supplied and the control signal CAV is supplied. And
In data selection / extraction section 59, read output DRO (20) from memory section 56A and read output DRE (20) from memory section 56B are converted into one frame in R data series DR (10) according to control signal CSF. Operation is performed alternately for a period corresponding to the period, and the read output D
During the extraction period for each of RO (20) and DRE (20), the R data series DR in response to the control signal CAV.
In the period corresponding to each of EAV and SAV included in the horizontal blanking period in each line period of (10),
An operation of extracting the reference word data DSW transmitted from the word data transmission unit 62 under the control of the control signal CWD is performed.

As a result, as shown in FIG. 6B, a fetch output including a read output (56A read output) from the memory unit 56A and a read output (56B read from the memory unit 56B) are output from the data selection / fetch unit 59. And readout outputs including the readout outputs) are alternately obtained for a period 1TF corresponding to one frame period in the R data sequence DR (10), thereby forming 20-bit word string data DXR (20). As shown in FIG. 6C, each of the takeout output including the 56A readout output and the takeout output including the 56B readout output is generated during each of the periods 1TL corresponding to one line period of the R data sequence DR (10). Data series DR (1
0), the reference word data DS corresponding to the EAV included in
W, 56A read output (or 56B read output), reference word data DSW corresponding to SAV included in the R data series DR (10), and 56A read output (or 56B read output) are sequentially arranged. You.

Further, the control signals CSF and CAV are also supplied from the control signal forming section 52 to the data selection / extraction section 60. Then, in data selection / extraction section 60, read output DG from memory section 57A is output in response to control signal CSF.
O (20) and the read output DGE (2
0) are alternately extracted for a period corresponding to one frame period in the G data series DG (10), and the control is performed during the extraction period for each of the readout outputs DGO (20) and DGE (20). According to the signal CAV, G
During a period corresponding to each of EAV and SAV included in the horizontal blanking period in each line period of the data series DG (10), the control signal C from the word data transmitting unit 62 is output.
Reference word data D transmitted under control by WD
The operation of taking out the SW is performed.

As a result, as shown in FIG. 6E, the data selection / extraction section 60 outputs an output including a read output (57A read output) from the memory section 57A and a read output (57B read output from the memory section 57B). And readout outputs including readout outputs) are alternately obtained for a period 1TF corresponding to one frame period in the G data sequence DG (10), and they form 20-bit word string data DXG (20). As shown in FIG. 6F, each of the takeout output including the 57A readout output and the takeout output including the 57B readout output G during the period 1TL corresponding to one line period of the G data series DG (10). Data series DG (1
0), the reference word data DS corresponding to the EAV included in
W, 57A read output (or 57B read output), reference word data DSW corresponding to SAV included in the G data series DG (10), and 57A read output (or 57B read output) are sequentially arranged. You.

Further, the control signals CSF and CAV are also supplied from the control signal forming section 52 to the data selection / extraction section 61. Then, in the data selection / extraction section 61, the read output D from the memory section 58A is output in accordance with the control signal CSF.
BO (20) and readout DBE from memory unit 58B
(20) are alternately taken out for a period corresponding to one frame period in the B data series DB (10).
In addition, during the extraction period for each of the read outputs DBO (20) and DBE (20), according to the control signal CAV,
A reference word transmitted from the word data transmission unit 62 under the control of the control signal CWD during a period corresponding to each of the EAV and SAV included in the horizontal blanking period in each line period of the B data series DB (10). The operation of extracting the data DSW is performed.

As a result, as shown in FIG. 6H, a fetch output including a read output (58A read output) from the memory unit 58A and a read output (58B read from the memory unit 58B) are output from the data selection and fetch unit 61. And a take-out output including a read-out output are alternately obtained for a period 1TF corresponding to one frame period in the B data sequence DB (10), thereby forming 20-bit word string data DXB (20). As shown in FIG. 6I, each of the takeout output including the 58A readout output and the takeout output including the 58B readout output includes a B signal in a period 1TL corresponding to one line period of the B data sequence DB (10). Data series DB (1
0), the reference word data DS corresponding to the EAV included in
W, 58A read output (or 58B read output), reference word data DSW corresponding to SAV included in B data series DB (10), and 58A read output (or 58B read output) are sequentially arranged. You.

The 20-bit word string data DXR (20) obtained from the data selection / extraction section 59 is supplied to the error detection code data exchange section 63. The error detection code data replacement unit 63 converts the error detection code data based on the error detection code data RCR0 and RCR1 in the R data sequence DR (10) included in the 20-bit word sequence data DXR (20) into 20-bit word sequence data. Replaced with new error detection code data conforming to DXR (20),
The bit word string data DZR (20) is formed. The 20-bit word string data DZR (20) is transmitted as output data from the data conversion unit 51.

The 20-bit word string data DXG (20) obtained from the data selection / extraction section 60 is supplied to the error detection code data exchange section 64. The error detection code data replacement unit 64 outputs the 20-bit word string data DXG (2
0) included in the G data series DG (10) based on the error detection code data GCR0 and GCR1 is converted into 20-bit word string data DXG (2
In place of new error detection code data conforming to 0), 20-bit word string data DZG (20) is formed. This 20-bit word string data DZG (20) is also
The data is transmitted as output data from the data converter 51.

Further, the 20-bit word string data DXB (20) obtained from the data selection / extraction section 61 is supplied to an error detection code data exchange section 65. The error detection code data replacement section 65 is a 20-bit word string data DXB
The error detection code data based on the error detection code data BCR0 and BCR1 in the B data sequence DB (10) included in (20) is converted into 20-bit word string data DXB
20-bit word string data DZB (20) is formed by replacing with new error detection code data conforming to (20). This 20-bit word string data DZB (20)
Are also transmitted as output data from the data conversion unit 51.

As described above, the data conversion unit 51
Each has a word transmission rate of 148.5 MBps3
Each of the R data sequence DR (10), the G data sequence DG (10), and the B data sequence DB (10), which are 10-bit word string data of a channel, is included in each of them, as shown in FIG. Of EAV and SAV, which are specific 10-bit word groups, for example, in FIG.
The word transmission rate is 74.25 MBps lower than 148.5 MBps, including replacement with the reference word data DSW which is a specific 20-bit word group as shown in FIG.
Are converted into 20-bit word string data, and the three-channel 20-bit word string data DZR (20), each having a word transmission rate of 74.25 MBps,
DZG (20) and DZB (20) will be formed.

The 20-bit word string data DZR (20) derived from the data conversion unit 51 is supplied to the P / S conversion unit 66.
Supplied to The P / S conversion unit 66 performs P / S conversion on the 20-bit word string data DZR (20) to increase the bit transmission rate based on the 20-bit word string data DZR (20) to 74.25 MBps × 20. = 1.4
It forms serial data DSR of 85 Gbps and supplies the serial data DSR to the transmission signal forming section 67. The transmission signal forming unit 67 converts the serial data DSR into
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 STR which is an optical signal suitable for the formed data transmission path and transmitted. Thus, transmission of the serial data DSR is performed.

Further, 2 derived from the data conversion unit 51
The 0-bit word string data DZG (20) is supplied to the P / S converter 68. In the P / S converter 68, 2
The P / S conversion is performed on the 0-bit word string data DZG (20) to increase the transmission rate based on the 20-bit word string data DZG (20) to 74.25 MBps × 20 = 1.4.
The serial data DSG of 85 Gbps is formed, and the serial data DSG is supplied to the transmission signal forming unit 69. The transmission signal forming unit 69 converts the serial data DSG into
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 STG which is an optical signal suitable for the formed data transmission path and transmitted. Thereby, transmission of the serial data DSG is performed.

Further, 20-bit word string data DZB (20) derived from data conversion section 51 is supplied to P / S conversion section 70. In the P / S converter 70,
The P / S conversion is performed on the 20-bit word string data DZB (20) to obtain the 20-bit word string data DZB (20).
Is set to 74.25 MBps × 20 = 1.
Forming serial data DSB of 485 Gbps,
The serial data DSB is supplied to the transmission signal forming section 71. The transmission signal forming unit 71 includes the serial data DSB
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 STB which is an optical signal suitable for the data transmission path formed and transmitted. Thus, transmission of the serial data DSB is performed.

In the data transmission apparatus shown in FIG. 5 as described above, the P / S conversion section 66 and the transmission signal forming section 6
7, a P / S conversion unit 68 and a transmission signal formation unit 69;
Each of the P / S conversion section 70 and the transmission signal forming section 71 converts a 20-bit word string data having a word transmission rate of 74.25 MBps to a bit transmission rate of 1.485 Gbp.
The P / S conversion unit 66 and the transmission signal formation unit 67, the P / S conversion unit 68 and the transmission signal formation unit 69, and the P / S conversion unit the converter 70 and the transmission signal formation section 71, for example, interlaced scanning and have been Y, P _B / P _R signal format HD digital video signal integrated circuits that are provided for transmission (IC) devices effectively the It can be configured using. Therefore, an R data sequence D which is 10-bit word string data with a word transmission rate of 148.5 MBps
The HD digital video signals of the G, B, and R signal formats, which are composed of R (10), G data series DG (10), and B data series DB (10) and are used for progressive scanning, are converted into new circuit elements and the like. It can be done by means that can be set up relatively easily without the need for development.

FIG. 7 shows an example of data transmitted from the example of the data transmission apparatus shown in FIG. 5 in accordance with the example of the data transmission method according to the invention described in any one of claims 1 to 6 and 8 in the claims of the present application. G, B, for sequential scanning
An R data sequence DR (10), a G data sequence DG (10) and a B data sequence constituting an HD digital video signal in the R signal format.
Serial data DS based on data series DB (10)
R, DSG and DSB respectively correspond to transmission signals STR,
1 shows an example of a data receiving device that receives STG and STB.

In the example of the data receiving apparatus shown in FIG. 7, 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 STR, STG and S which are optical signals suitable for the data transmission path
Receiving units 81, 82, and 83 for receiving TB respectively are provided. When receiving the transmission signal STR, the receiving unit 81 reproduces the serial data DSR based on the received transmission signal STR and supplies the reproduced serial data DSR to the reference data detection / S / P conversion unit 84. When receiving the transmission signal STG, the receiving section 82 reproduces the serial data DSG based on the received transmission signal STG and supplies the reproduced serial data DSG to the reference data detection / S / P conversion section 85. . Further, the receiving unit 83
Reproduces the serial data DSB based on the received transmission signal STB when receiving the transmission signal STB, and uses the reproduced serial data DSB as the reference data detection / S / P
It is supplied to the conversion unit 86.

In the reference data detection / S / P converter 84, 3Fs, which are four 20-bit words constituting the reference word data DSW in the serial data DSR, are used.
F: 3FFh, 300000h, 000000h, and XYZ: XYZh are converted into serial data and 3FFh: 3FFh, 000000h and 000000h are converted into serial data. , And word synchronization is performed based on the detected reference data, and S is added to the serial data DSR.
/ P conversion is performed to obtain 20-bit word string data DZR (20) based on the serial data DSR at a word transmission rate of 74.25 MBps. The 20-bit word string data DZR (20) obtained from the reference data detection / S / P conversion section 84 is input to the specific word detection section 87.
Supplied to

The reference data detection / S / P converter 85
In the serial data DSG, four 20-bit words constituting the reference word data DSW, ie, 3FF: 3FFh, 0,000,000h, 00:00:00
0FF and 3FF: 3FFh in the portion obtained by converting XYZ: XYZh into serial data, 3,000,000
h and 000: 000h are converted into serial data, the part is detected as reference data, and word synchronization is performed based on the detected reference data to obtain serial data DSG.
Is subjected to S / P conversion and is based on the serial data DSG.
The 0-bit word string data DZG (20) is obtained with a word transmission rate of 74.25 MBps. The 20-bit word string data DZG (20) obtained from the reference data detection / S / P converter 85 is supplied to the specific word detector 88.

Further, the reference data detection / S / P converter 8
In No. 6, three 20-bit words, 3FF: 3FFh, 0,000,000: 000h, 000: 0, which are four 20-bit words constituting the reference word data DSW in the serial data DSB.
00h and 3FF: 3FFh in the portion obtained by converting XYZ: XYZh into serial data, 00:00:00
0h and 000: 000h are converted into serial data, and detected as reference data, and word synchronization is performed based on the detected reference data to obtain serial data DS.
B is subjected to S / P conversion to obtain 20-bit word string data DZB (20) based on the serial data DSB with a word transmission rate of 74.25 MBps.
The 20-bit word string data DZB (20) obtained from the reference data detection / S / P converter 86 is supplied to the specific word detector 89.

In the specific word detecting section 87, the 20-bit word string data DZR (20) is supplied to the data converting section 90 through the specific word detecting section 87, and the respective reference word data DSW included in the 20-bit word string data DZR (20) are supplied. 3F, which are the four 20-bit words that make up
F: 3FFh, 000: 000h, 00000: 000h and XYZ: XYZh are detected as specific words, and the resulting detection output data DDR is sent out. Detection output data D obtained from specific word data detection section 87
The DR is supplied to the data conversion unit 90.

In the specific word data detecting section 88,
Through it, 20-bit word string data DZG (20)
Is supplied to the data conversion unit 90, and the four 20-bit words constituting each reference word data DSW included in the 20-bit word string data DZG (20) are 3FF: 3FFh, 000: 000000h, and 00000: 000.
h and XYZ: XYZh are detected as specific words,
The resulting detection output data DDG is sent out.
The detection output data DDG obtained from the specific word data detection unit 88 is also supplied to the data conversion unit 90.

Further, specific word data detecting section 89 also transmits 20-bit word string data DZB through it.
(20) is supplied to the data conversion unit 90 and
3FF: 3FFh, 000000h, 00, which are four 20-bit words constituting each reference word data DSW included in the 0-bit word string data DZB (20)
0: 000h and XYZ: XYZh are detected as specific words, and the resulting detection output data DDB is sent out. The detection output data DDB obtained from the specific word data detection unit 89 is also supplied to the data conversion unit 90.

The data conversion section 90 has 20-bit word string data DZR (20), DZG (20) and DZB
(20) Each word transmission rate of 74.25 Mbps
Is also supplied with a clock pulse signal CB having a frequency of 74.25 MHz corresponding to. Then, the data conversion unit 90
, The detection output data DDR from the specific word data detection unit 87, the detection output data DDG from the specific word data detection unit 88, the detection output data DDB from the specific word data detection unit 89, and the clock pulse signal C
B is supplied to the control signal forming section 91.

The control signal forming section 91 performs 2 based on the detection output data DDR from the specific word data detecting section 87.
A control signal CSFR synchronized with each frame period in the 0-bit word string data DZR (20) is formed, and based on the detection output data DDG from the specific word data detection unit 88, each control signal CSFR in the 20-bit word string data DZG (20) is generated. The control signal CSFG synchronized with the frame period is formed, and the 20-bit word string data DZB is generated based on the detection output data DDB from the specific word data detection unit 89.
Control signal C synchronized with each frame period in (20)
An SFB is formed. In addition, the frequency is 74.25
The write control signals QWR, QWG, and QWB having a frequency of 74.25 MHz, which are provided for data writing and data reading in a memory unit described later, based on a clock pulse signal CB having a frequency of 7
4.25 × 2 = 148.5 MHz Read control signal Q
Form RR, QRG and QRB. At this time, the write control signals QWR, QWG and QWB and the read control signals QRR,
Each of QRG and QRB is subjected to a skew absorption process by a skew absorption control signal CSK obtained from a skew absorption control signal forming unit built in the control signal forming unit 91 and supplied with the detection output data DDR, DDG and DDB. It is assumed that it was done.

In the skew absorption control signal forming section built in the control signal forming section 91, the detection output data DDR from the specific word data detecting section 87, the detection output data DDG from the specific word data detecting section 88, and the specific A time difference between the transmission signals STR, STG, and STB is detected based on a time difference between the detection output data DDB from the word data detection unit 89, and a skew absorption control signal CSK corresponding to the detected time difference is generated. It is formed.

Control signals CSFR, CSFG and CSFB obtained in control signal forming section 91 are supplied to switches 92, 93 and 94 in data conversion section 90, respectively. The switch 92 includes a movable contact 92 a and a selection contact 9.
2b and 92c, and the movable contact 92a is controlled by the control signal CSFR so that the movable contact 92a
The operation of being alternately connected to the selection contacts 92b and 92c is repeated. The switch 93 includes a movable contact 93 a and a selection contact 9.
3b and 93c, and the movable contact 93a is controlled by the control signal CSFG, and for each frame period in the 20-bit word string data DZG (20),
The operation of being alternately connected to the selection contacts 93b and 93c is repeated. The switch 94 includes a movable contact 94 a and a selection contact 9.
4b and 94c, and the movable contact 94a is controlled by the control signal CSFB, and for each frame period in the 20-bit word string data DZB (20),
The operation of being alternately connected to the selection contacts 94b and 94c is repeated.

Selection contacts 92b and 92c of the switch 92
Are connected to memory sections 95A and 95B, respectively. The selection contacts 93b and 93c of the switch 93 are connected to the memory sections 96A and 96B, respectively. The selection contacts 94b and 94c of the switch 94 are connected to the memory. Part 97
A and 97B are respectively connected.

Under these circumstances, the 20-bit word string data DZR (20) supplied to the data converter 90 is
By the switch 92 having the movable contact 92a controlled by the control signal CSFR, a state in which each frame period portion is alternately supplied to the memory units 95A and 95B connected to the selection contacts 92b and 92c of the switch 92, respectively. Repeated. The 20-bit word string data DZG (20) supplied to the data conversion unit 90 has its frame period portion changed by a switch 93 having a movable contact 93a controlled by a control signal CSFG.
The state of being alternately supplied to the memory units 96A and 96B connected to the selection contacts 93b and 93c of the switch 93, respectively, is repeated. Further, the 20-bit word string data DZB (20) supplied to the data conversion unit 90 is switched by a switch 94 having a movable contact 94a controlled by a control signal CSFB so that each frame period portion thereof is connected to a selection contact of the switch 94. The state of being alternately supplied to the memory units 97A and 97B respectively connected to 94b and 94c is repeated.

Thus, for example, each odd frame period portion in the 20-bit word string data DZR (20) is sequentially supplied to the memory section 95A, and each even frame period portion in the 20-bit word string data DZR (20) is supplied. Are sequentially supplied to the memory 95B, and each odd frame period portion of the 20-bit word string data DZG (20) is sequentially supplied to the memory 96A, and the 20-bit word string data DZG (2
0) are sequentially supplied to the memory unit 96B, and each odd frame period portion of the 20-bit word string data DZB (20) is sequentially supplied to the memory unit 97A and the 20-bit word Each even frame period portion of the column data DZB (20) is sequentially supplied to the memory unit 97B.

A write control signal QWR having a frequency of 74.25 MHz and a read control signal QRR having a frequency of 148.5 MHz are supplied from the control signal forming section 91 to each of the memory sections 95A and 95B. In the memory section 95A, the writing of each odd frame period portion in the 20-bit word string data DZR (20) in accordance with the write control signal QWR having a frequency of 74.25 MHz is performed sequentially, and the written odd frame The period portion is read as 10-bit word string data in accordance with a read control signal QRR having a frequency of 148.5 MHz, and in the memory section 95B, a 20-bit word is read in accordance with a write control signal QWR having a frequency of 74.25 MHz. The writing of each even-numbered frame period portion in the column data DZR (20) is sequentially performed, and the written even-numbered frame period portion has a frequency of 148.
The data is read as 10-bit word string data according to a read control signal QRR of 5 MHz.

A write control signal QWG having a frequency of 74.25 MHz and a read control signal QRG having a frequency of 148.5 MHz are supplied from the control signal forming section 91 to each of the memory sections 96 A and 96 B. In the memory section 96A, writing of each odd frame period portion of the 20-bit word string data DZG (20) in accordance with the write control signal QWG having a frequency of 74.25 MHz is sequentially performed, and each written odd frame is written. The period portion is read as 10-bit word string data in accordance with a read control signal QRG having a frequency of 148.5 MHz. The writing of each even frame period portion in the column data DZG (20) is sequentially performed, and the frequency of each written even frame period portion is set to 148.
The data is read as 10-bit word string data according to a read control signal QRG of 5 MHz.

A write control signal QWB having a frequency of 74.25 MHz and a read control signal QRB having a frequency of 148.5 MHz are supplied from the control signal forming section 91 to each of the memory sections 97A and 97B. In the memory section 97A, the writing of each odd frame period portion in the 20-bit word string data DZB (20) in accordance with the write control signal QWB having a frequency of 74.25 MHz is sequentially performed, and each written odd frame is written. The period portion is read as 10-bit word string data according to a read control signal QRB having a frequency of 148.5 MHz, and in the memory section 97B, a 20-bit word is read according to a write control signal QWB having a frequency of 74.25 MHz. The writing of each even-numbered frame period portion in the column data DZB (20) is sequentially performed, and the written even-numbered frame period portion has a frequency of 148.
The data is read as 10-bit word string data according to the read control signal QRB at 5 MHz.

In other words, in the memory sections 95A and 95B, each frame period portion of the 20-bit word string data DZR (20) corresponds to the 20-bit word string data DZR (2
0) is repeated alternately for a period corresponding to one frame period, and the memory unit 95A
, The odd frame periods of the 20-bit word string data DZR (20) are sequentially written, and the even frame periods of the 20-bit word string data DZR (20) are sequentially written to the memory 95B.

At the same time, in memory section 95A, write control signal QW having a frequency of 74.25 MHz
Each odd frame period portion of the 20-bit word string data DZR (20) written therein according to R is read as 10-bit word string data according to a read control signal QRR having a frequency of 148.5 MHz. As a result, 10-bit word string data for one frame period based on each odd frame period portion of the 20-bit word string data DZR (20) is sequentially obtained from the memory unit 95A, and the word transmission rate formed by a series of the data is obtained. Is read out at 148.5 MBps. In memory unit 95B, 20-bit word string data DZR (2) written therein according to write control signal QWR having a frequency of 74.25 MHz.
0), each even frame period portion has a frequency of 148.5.
The data is read as 10-bit word string data in accordance with a read control signal QRR at MHz. Thereby, 20-bit word string data DZR (2
0), 10-bit word string data for one frame period based on each even frame period portion is sequentially obtained, and the word transmission rate formed by the series thereof is 148.5.
A read output DRE (10) of MBps is obtained.

In the memory sections 96A and 96B, each frame period portion of the 20-bit word string data DZG (20) corresponds to the 20-bit word string data DZG (2).
0) is repeated alternately for a period corresponding to one frame period, and the odd frame period portions of the 20-bit word string data DZG (20) are sequentially written to the memory unit 96A, Each even-frame period portion of the 20-bit word string data DZG (20) is sequentially written into 96B.

At the same time, in memory section 96A, write control signal QW having a frequency of 74.25 MHz
Each odd frame period portion of the 20-bit word string data DZG (20) written therein according to G is read as 10-bit word string data according to a read control signal QRG having a frequency of 148.5 MHz. As a result, 10-bit word string data for one frame period based on each odd frame period portion of the 20-bit word string data DZG (20) is sequentially obtained from the memory unit 96A, and the word transmission rate formed by the series thereof is obtained. Is read out at 148.5 MBps. Further, in memory section 96B, in accordance with write control signal QWG having a frequency of 74.25 MHz, 20-bit word string data DZG (2
0), each even frame period portion has a frequency of 148.5.
The data is read as 10-bit word string data in accordance with a read control signal QRG at MHz. Thereby, 20-bit word string data DZG (2
0), 10-bit word string data for one frame period based on each even frame period portion is sequentially obtained, and the word transmission rate formed by the series thereof is 148.5.
A read output DGE (10) of MBps is obtained.

Further, in the memory sections 97A and 97B, each frame period portion of the 20-bit word string data DZB (20) is replaced with the 20-bit word string data DZB.
The state of being alternately written to a period corresponding to one frame period in (20) is repeated, and the memory unit 97
In A, the odd frame period portions of the 20-bit word string data DZB (20) are sequentially written, and the memory unit 97B
Are sequentially written in each even frame period portion of the 20-bit word string data DZB (20).

At the same time, in memory section 97A, write control signal QW having a frequency of 74.25 MHz
Each odd frame period portion of the 20-bit word string data DZB (20) written therein according to B is read as 10-bit word string data according to a read control signal QRB having a frequency of 148.5 MHz. As a result, 10-bit word string data for one frame period based on each odd frame period portion of the 20-bit word string data DZB (20) is sequentially obtained from the memory unit 97A, and the word transmission rate formed by a series thereof is obtained. Is read out at 148.5 MBps. Further, in memory section 97B, 20-bit word string data DZB (2) written therein according to write control signal QWB having a frequency of 74.25 MHz.
0), each even frame period portion has a frequency of 148.5.
The data is read as 10-bit word string data in accordance with a read control signal QRB at MHz. Thereby, 20-bit word string data DZB (2
0), 10-bit word string data for one frame period based on each even frame period portion is sequentially obtained, and the word transmission rate formed by the series thereof is 148.5.
A read output DBE (10) of MBps is obtained.

The read outputs DRO (10) and DRE (10) from the memory units 95A and 95B are supplied to a data selection / extraction unit 98. Also, the memory units 96A and 96B
The read outputs DGO (10) and DGE (10) from
The data is supplied to the data selection / extraction unit 99. Further, the read output DBO (10) from the memory units 97A and 97B and D
BE (10) is supplied to the data selection / extraction unit 100.

Each of the data selection / extraction sections 98, 99 and 100 is also supplied with the reference word data DVW sent from the word data sending section 101. The reference word data DVW has a word transmission rate of 148.5 MBps.
R data series DR (10), G data series DG
(10) and four 10-bit words (3FF (R), 000 (R), 000 (R) and XYZ (R), 3FF) forming the EAV or SAV included in the B data series DB (10), respectively. (G), 000 (G), 000
(G) and XYZ (G), or 3FF (B), 0
00 (B), 000 (B) and XYZ (B)), three 10-bit words, 3FFh, 000
h, 000h and XYZh (h indicates hexadecimal notation) are sequentially arranged.

The transmission of the reference word data DVW from the word data transmission section 101 is controlled by the control signal forming section 91.
Control signal C supplied to the word data transmitting unit 101 from
Controlled by WDV. The control signal CWDV is formed based on data obtained by subjecting the detection output data DDR, DDG, and DDB obtained from the specific word detection units 87, 88, and 89 to processing by the skew absorption control signal CSK, respectively. , 95B, 96A, 9
Readout DR obtained from 6B, 97A and 97B respectively
O (10), DRE (10), DGO (10), DGE
(10), DBO (10) and DBE (10) are synchronized with the reference word data DSW during the horizontal blanking period in each line period.

Further, control signals CSFS and CAVS are supplied from a control signal forming section 91 to each of the data selection / extraction sections 98, 99 and 100. Control signal CSFS
Are formed on the basis of data obtained by subjecting the detection output data DDR, DDG, and DDB to processing by the skew absorption control signal CSK, and the memory units 95A, 95B, 9
Readout outputs DRO (10), DRE (10), DGO (1) obtained from 6A, 96B, 97A and 97B, respectively.
0), DGE (10), DBO (10) and DBE (1
0) are synchronized with each frame period.
Further, the control signal CAVS is the detection output data DDR, D
DG and DDB are formed on the basis of data obtained by performing processing based on the skew absorption control signal CSK, and are formed in the memory units 95A, 95B, 96A, 96B, 97A and 97.
Read outputs DRO (10), DRE obtained from B respectively
(10), DGO (10), DGE (10), DBO
(10) and the reference word data DSW during the horizontal blanking period in each line period of the DBE (10).
Is synchronized with

In data selection / extraction section 98, read output D from memory section 95A in response to control signal CSFS.
RO (10) and read output DRE from memory unit 95B
(10) and read output DRO (10) and DRE (1
0), an operation of alternately taking out a period corresponding to one frame period is performed, and the read output DRO (1
0) and DRE (10) during the extraction period, in response to the control signal CAVS, the read output DRO (1).
0) and DRE (10) during the horizontal blanking period corresponding to the reference word data DSW during the horizontal blanking period, the reference word transmitted from the word data transmission unit 101 under the control of the control signal CWDV. An operation of extracting the data DVW is performed.

As a result, from the data selection / extraction section 98, an extraction output including the read output from the memory section 95A and an extraction output including the read output from the memory section 95B are output from the read outputs DRO (10) and DRE (10). ) Are alternately obtained for a period corresponding to one frame period, thereby forming 10-bit word string data DCR (10). The extracted output including the read output from the memory unit 95A and the extracted output including the read output from the memory unit 95B are respectively read output DRO (10) and DRE (1
In each of the periods corresponding to each one line period of 0), the reference word data DVW corresponding to the reference word data DSW and forming the EAV, and the read output from the memory unit 95A (or the read output from the memory unit 95B). , And the reference word data DVW forming the SAV and the read output from the memory unit 95A (or the read output from the memory unit 95B) are sequentially arranged.

In the data selection / extraction section 99,
In response to control signal CSFS, read output DGO (10) from memory unit 96A and read output DGO from memory unit 96B are output.
GE (10) and read output DGO (10) and DGE
In each of (10), an operation of alternately taking out a period corresponding to one frame period is performed, and the read output DGO
During the extraction period for each of (10) and DGE (10), the read output DGO (1) is output in response to the control signal CAVS.
0) and DGE (10) during the horizontal blanking period corresponding to the reference word data DSW during the horizontal blanking period, the reference word transmitted from the word data transmission unit 101 under the control of the control signal CWDV. An operation of extracting the data DVW is performed.

As a result, from the data selecting / extracting section 99, the extracted output including the read output from the memory section 96A and the extracted output including the read output from the memory section 96B are output as the read outputs DGO (10) and DGE (10). ) Are alternately obtained for periods corresponding to each one frame period, thereby forming 10-bit word string data DCG (10). Each of the extracted output including the read output from the memory unit 96A and the extracted output including the read output from the memory unit 96B is a period corresponding to one line period of each of the read outputs DGO (10) and DGE (10). Respectively correspond to the reference word data DSW and form the SAV corresponding to the reference word data DVW forming the EAV, the read output from the memory section 96A (or the read output from the memory section 96B), and the reference word data DSW. The reference word data DVW and the read output from the memory section 96A (or the read output from the memory section 96B) are sequentially arranged.

Further, in data selection / extraction section 100, read output DBO (10) from memory section 97A and read output DBE (10) from memory section 97B are read and output DBO (10) in response to control signal CSFS. ) And DB
E (10), an operation for alternately taking out a period corresponding to one frame period is performed, and the read output DBO
During the extraction period for each of (10) and DBE (10), in response to the control signal CAVS, the read output DBO (1
0) and DBE (10) during the horizontal blanking period corresponding to the reference word data DSW during the horizontal blanking period, the reference word transmitted from the word data transmission unit 101 under the control of the control signal CWDV. An operation of extracting the data DVW is performed.

As a result, from the data selection / extraction unit 100, an extraction output including the read output from the memory unit 97A and an extraction output including the read output from the memory unit 97B are output to the read outputs DBO (10) and DBE (10). ) Are alternately obtained for a period corresponding to each one frame period, thereby forming 10-bit word string data DCB (10). Each of the extracted output including the read output from the memory unit 97A and the extracted output including the read output from the memory unit 97B is a period corresponding to one line period of each of the read outputs DBO (10) and DBE (10). Respectively correspond to the reference word data DSW and form the SAV corresponding to the reference word data DVW forming the EAV, the read output from the memory section 97A (or the read output from the memory section 97B), and the reference word data DSW. The reference word data DVW and the read output from the memory unit 97A (or the read output from the memory unit 97B) are sequentially arranged.

The 10-bit word string data DCR (10) obtained from the data selection / extraction section 98 is supplied to the error detection code data exchange section 102. The error detection code data replacement unit 102 converts the 10-bit word string data DCR (1
0) is replaced by new error detection code data conforming to the 10-bit word string data DCR (10), and the word transmission rate is set to 148.5.
An R data series DR (10), which is 10-bit word string data of MBps, is reproduced, and is reproduced by a data conversion unit 90.
Sent from.

The 10-bit word string data DCG (10) obtained from the data selection / extraction section 99 is supplied to the error detection code data exchange section 103. The error detection code data replacement unit 103 includes 10-bit word string data DCG
The error detection code data included in (10) is replaced with new error detection code data conforming to the 10-bit word string data DCG (10), and the word transmission rate is set to 14
The G data sequence DG (10), which is 10-bit word string data of 8.5 MBps, is reproduced and transmitted from the data conversion unit 90.

Further, the 10-bit word string data DCB (10) obtained from the data selection / extraction section 100 is supplied to the error detection code data exchange section 104. The error detection code data replacement unit 104 includes 10-bit word string data D
The error detection code data included in the CB (10) is replaced with new error detection code data conforming to the 10-bit word string data DCB (10), and the word transmission rate is set to 1
The B data sequence DB (10), which is 10-bit word string data of 48.5 MBps, is reproduced and transmitted from the data conversion unit 90.

In the example of the data transmission method implemented by using the example of the data transmission apparatus shown in FIG. 1 described above, Y, which is 2-channel 10-bit word string data, is used.
Data series DY (10) and P _B / P _R data sequence DC
(10) is provided for transmission, and in the example of the data transmission method implemented by using the example of the data transmission apparatus shown in FIG. 5, R data which is 10-bit word string data of three channels is used. Series DR (10), G data series DG
(10) and the B data series DB (10) are provided for transmission, but the number of 10-bit word string data provided for transmission is not limited to these examples, and may be any number. Can be.

In the example of the data transmission method implemented by using the example of the data transmission apparatus shown in FIG. 1, each of the memory units 14A, 14B, 15A and 15B is used for sequential scanning. and Y, Y data sequence DY constituting the HD digital picture signal of P _B / P _R signal format
(10), and writing and reading for each frame period in each of the P _B / P _R data series DC (10) are performed, and data executed using the example of the data transmission device shown in FIG. In the example of the transmission method, the memory units 56A, 56B, 57A, 57B, 58A and 58
In each of B, an R data sequence DR (10), a G data sequence DG (10), and a B data sequence DB (10) constituting an HD digital video signal of a G, B, R signal format used for progressive scanning. While writing and reading are to be performed for each frame period addressed in respective memory portions 14A, 14B, in s 15A and 15B husband, are sequentially with scanning Y, P _B / P _R signal format Data series DY constituting the HD digital video signal of FIG.
(10) and writing and reading for each line period in each of the P _B / P _R data series DC (10), or the memory units 56A, 56B, 57
In each of A, 57B, 58A, and 58B, an R data sequence DR (10), a G data sequence DG (10), and a B data which constitute an HD digital video signal of a G, B, and R signal format used for progressive scanning. Writing and reading for each line period in each of the series DBs (10) may be performed.

[0147]

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 claims 9 to 12, the N-channel 10-bit word string data each having the first word transmission rate is: For example, as in the data transmission method according to the second aspect of the present invention and the data transmission apparatus according to the tenth aspect of the present invention, a word data transmission unit that transmits a specific 20-bit word group is provided. , Each of the predetermined unit sections for each of the N-channel 10-bit word string data is in accordance with a write control signal having a first frequency in each of the two memory means. Written alternately and repeatedly, 2
The conversion of the unit section written in each of the memory means into the 20-bit word string data in accordance with the read control signal having the second frequency lower than the first frequency is performed, and the word data transmission is performed. The specific 20-bit word group from the section and the read output from each of the two memory means are selectively taken out, so that the N-channel 20-bit word string data each having the second word transmission rate is obtained. The N-channel 20-bit word string data obtained by the conversion is converted into N-channel serial data by P / S conversion processing.
They are transmitted to be transmitted through N transmission paths, respectively.

Accordingly, for example, for Y, Y for sequential scanning,
Y data sequence and P _B / P _R data sequence constituting the HD digital picture signal of P _B / P _R signal format or,
N-channels each having a first word transmission rate, such as an R data sequence, a G data sequence, and a B data sequence constituting an HD digital video signal of a G, B, R signal format used for progressive scanning. A P / S conversion process for each of the N-channel 20-bit word sequence data, each having a second word transmission rate lower than the first word transmission rate, based on the 10-bit word sequence data, and the resulting P / S conversion process. for transmission of serial data of N channels are, for example, is the use interlaced scanning Y, the P _B / P _R signal format HD digital video signal integrated circuits that are provided for transmission (IC) as the element, is possible to effectively utilize existing circuitry, thus, for example, are sequentially with scanning Y, P _B / P _R signal format HD digital video signal or sequentially Transmission of digital word string data such as HD digital video signals of G, B, and R signal formats used for scanning can be relatively easily arranged without the need to develop new circuit elements. Could be done.

[Brief description of the drawings]

FIG. 1 claims 1 to 7 in the claims of the present application.
Claim 9 in which the example of the data transmission method according to the invention described in any one of the claims is implemented.
FIG. 13 is a block diagram showing an example of a data transmission device according to any one of the inventions described in any one of FIGS.

FIG. 2 is a time chart for explaining a data conversion unit in the example of the data transmission device shown in FIG. 1;

3 is a time chart for explaining a data conversion unit in the example of the data transmission device shown in FIG. 1 or FIG. 5;

[Fig. 4] Claims 1 to 7 in the claims of the present application.
FIG. 3 is a block diagram showing an example of a data receiving device that receives a transmission signal transmitted from the example of the data transmission device shown in FIG. 1 according to the example of the data transmission method according to the invention described in any one of the above.

FIG. 5: Claims 1 to 6 in the claims of the present application.
Another example of the data transmission device according to any one of claims 9 to 12 in the claims of the present application, in which the example of the data transmission method according to the invention described in any one of claims 8 and 9 is implemented. It is a block diagram showing an example.

FIG. 6 is a time chart for explaining a data conversion unit in the example of the data transmission apparatus shown in FIG. 5;

FIG. 7: Claims 1 to 6 in the claims of the present application.
FIG. 17 is a block diagram showing an example of a data receiving apparatus that receives a transmission signal transmitted from the example of the data transmission apparatus shown in FIG. 5 according to the example of the data transmission method according to the invention described in any one of FIGS. .

FIG. 8 is a conceptual diagram provided for describing an example of a data format of a digital video signal.

FIG. 9 is a conceptual diagram illustrating an example of a data format of a digital video signal.

[Explanation of symbols]

10, 37, 51, 90 ... data conversion unit, 11,
38, 52, 91 ... control signal forming unit, 12, 1
3,41,42,53,54,55,92,93,94
... Switches, 14A, 14B, 15A, 15B,
43A, 43B, 44A, 44B, 56A, 56B, 5
7A, 57B, 58A, 58B, 95A, 95B, 96
A, 96B, 97A, 97B ... memory unit, 16,
17, 45, 46, 59, 60, 61, 98, 99, 1
00: Data selection / extraction section, 18, 48, 62, 1
01 ... word data sending section, 19, 20, 49,
50, 63, 64, 65, 102, 103, 104 ...
.Error detection code data replacement unit, 21, 23, 66, 6
8, 70... P / S converter, 22, 24, 67, 6
9, 71 ... transmission signal forming unit, 31, 32, 81,
82, 83 ... receiving unit, 33, 34, 84, 85,
86: Reference data detection / S / P converter, 35, 3
6,87,88,89 ・ ・ ・ Specific word detection unit

Claims (12)

[Claims] 2. The method according to claim 1, wherein each of the N words has a first word transmission rate.
A second word transmission lower than the first word transmission rate, wherein each of the 10-bit word string data of the channels (N is an integer of 2 or more) includes replacement of a specific 10-bit word group with a specific 20-bit word group; Is converted to 20-bit word string data having a second rate, thereby forming N-channel 20-bit word string data each having the second word transmission rate. A data transmission method for performing parallel / serial conversion processing on each of them, and transmitting N-channel serial data obtained by the parallel / serial conversion processing for transmission through N transmission paths. 2. A predetermined unit division for each of N-channel 10-bit word string data, each having a first word transmission rate, provided that a word data transmitting section for transmitting a specific 20-bit word group is provided. Are repeatedly and alternately written to each of the two memory means in accordance with the write control signal having the first frequency, and the first division of the unit division written to each of the two memory means is performed. Conversion read into 20-bit word string data in accordance with a read control signal having a second frequency lower than the frequency of
By selectively retrieving the group of 0-bit words and the read output from each of the two memory means,
2. The data transmission method according to claim 1, wherein N-channel 20-bit word string data having a word transmission rate of: 3. The method of claim 2, wherein the second word transmission rate is substantially equal to the first word rate.
2. The data transmission method according to claim 1, wherein the word transmission rate is selected to be １ ／ of the word transmission rate. 4. The method according to claim 1, wherein the second word transmission rate is substantially equal to the first word transmission rate.
And the second frequency of the read control signal is selected to be substantially half of the first frequency of the write control signal. Item 3. The data transmission method according to Item 2. 5. The data transmission method according to claim 1, wherein the N-channel 10-bit word string data is digital video signal data representing video signal information. 6. The N-channel 10-bit word string data is digital video signal data representing video signal information, and a predetermined unit division is defined by each frame period portion or each line period portion of the digital video signal data. 4. The data transmission method according to claim 3, wherein: 7. The data transmission method according to claim 1, wherein N is set to 2. 8. The data transmission method according to claim 1, wherein N is set to 3. 9. The system according to claim 1, wherein N has a first word transmission rate.
A second word transmission lower than the first word transmission rate, wherein each of the 10-bit word string data of the channels (N is an integer of 2 or more) includes replacement of a specific 10-bit word group with a specific 20-bit word group; Data conversion means for performing conversion to 20-bit word string data having a rate, and forming N-channel 20-bit word string data each having the second word transmission rate; A plurality of parallel / serial conversion means for performing parallel / serial conversion processing on each of the N-channel 20-bit word string data to obtain N-channel serial data; and transmitting the N-channel serial data into N transmission paths. And a data transmission means for transmitting the data through the data transmission device. 10. A data conversion means for transmitting a specific 20-bit word group, and a predetermined unit for each of N-channel 10-bit word string data each having a first word transmission rate. Each of the segments
According to the write control signal having the first frequency, the data is alternately and repeatedly written, and the written unit segment is
Two memory means for converting and reading into 20-bit word string data in accordance with a read control signal having a second frequency lower than the first frequency, and a specific 20-bit word group from the word data transmitting unit And the read output from each of the two memory means are selectively taken out.
10. A data transmission apparatus according to claim 9, further comprising data selection and extraction means for forming N-channel 20-bit word string data each having a second word transmission rate. 11. The data transmission device according to claim 9, wherein the second word transmission rate is selected to be substantially half of the first word transmission rate. 12. The second word transmission rate is selected to be substantially one half of the first word transmission rate, and
11. The data transmission apparatus according to claim 10, wherein the second frequency of the read control signal is selected to be substantially one half of the first frequency of the write control signal.