JP2001024983A - Device and method for multiplexing video signal, device and method for recording video signal, and video recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To multiplex encoded video information and additional information thereof when performing real time encoding of video information. SOLUTION: A video signal 401, on which a closed caption 407 is superimposed, is divided into video information 403 and the closed caption 407 by a closed caption segmenting part 402 and after an MPEG stream 405, for which the video information 403 is encoded by an MPEG video encoder 404, and the closed caption 407 are respectively stored in buffer memories 406 and 408 for 1GOP, the both are multiplexed. Therefore, while encoding the inputted video information 403, the closed caption 407 can be multiplexed with the MPEG stream 405 in real time.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention
Video signal multiplexer, video signal multiplexing method, video signal recording device, video signal recording method, video signal recording method, and video recording medium for multiplexing encoded data encoded in the G format and additional information related to the encoded data It is about.

[0002]

2. Description of the Related Art Along with recent advances in digital signal processing technology, the need to transmit or store moving images as digital data has increased, and accordingly, techniques for encoding moving images have become important. MPEG1 and MPEG2 are examples of moving picture coding methods. In MPEG, video information is encoded and recorded in units of a GOP (Group Of Picture) in which a plurality of frames are put together. Here, the video information refers to information on a video signal displayed on a screen among video signals transmitted by television broadcasting or the like.

First, a first conventional video signal recording method will be described with reference to FIG. As shown in the figure, when the video information 901 is input to the MPEG video encoder 902, the video information 901 is compressed,
A stream 903 is created.

Next, an MPEG video encoder 902
The MPEG stream 903 output from is recorded on the video recording medium 905 by the encoded data recording means 904.

[0005] In a first conventional video signal recording method, video information 901 is encoded by an MPEG video encoder 902, and the encoded video information 901, which is an MPE, is encoded.
The G stream 903 is recorded on the video recording medium 905 in real time.

Some video signals have additional information such as character data superimposed during a blanking period so as not to affect the original image. These additional information is stored in a captain system or a closed caption system. It is used for

To encode a video signal on which such additional information is superimposed by an irreversible encoding method such as MPEG,
It is necessary to cut out the additional information from the video signal once, encode the video information in the video signal, and then multiplex the additional information with the encoded video information.

Next, a second conventional video signal multiplexing method will be described with reference to FIG. This video signal multiplexing method is a method used in authoring and the like.

As shown in the figure, when a video signal 950 of a certain program on which additional information 1006 is superimposed is input to additional information extracting means 1000, the video signal 950 is separated into video information 1001 and additional information 1006. Is output.

The video information 1001 output from the additional information extracting means 1000 is an MPEG video encoder 10.
02, and is encoded into an MPEG stream 1003 and output. MPEG video encoder 1002
The MPEG stream 1003 output from the encoder 1 is encoded by the encoded data recording means 1004.
005 is written. And the video information 1 of the whole program
The above operation is repeated until 001 is recorded on the encoded data recording medium 1005.

On the other hand, the additional information 1006 output from the additional information
07 on the additional information recording medium 1008 and additional information 1006 relating to the video information 1001 of the entire program.
Is recorded on the additional information recording medium 1008.

Next, the multiplexing means 1009 multiplexes the MPEG stream 1003 recorded on the encoded data recording medium 1005 and the additional information 1006 recorded on the additional information recording medium 1008.

Next, the MPEG stream 1010 in which the additional information 1006 has been multiplexed is output from the multiplexing means 1009 and recorded on the video recording medium 1012 by the encoded data recording means 1011.

FIG. 11 is a diagram showing a configuration of a video signal on which additional information is superimposed and an MPEG stream in the second conventional video signal multiplexing method.

In the figure, a video signal 1101 is composed of video information and additional information. A frame 1105 and additional information 1102, a frame 1106 and additional information 1103, and a frame 1107 and additional information 1104 are paired. The more time it is, the later the data.

The MPEG stream 1109 obtained by the video signal multiplexing method of the second conventional example is composed of a plurality of GOPs, one of which is GO.
P1108 is included.

The GOP 1108 includes a GOP header 11
10 and a plurality of coded data are stored. With the GOP header 1110 at the head, a frame 1107 is coded from coded data 1112 obtained by coding the frame 1105 and coded data 1113 obtained by coding the frame 1106. Up to the encoded data 1114 are stored in the GOP 1108.

The user data area 1111 in the GOP header 1110 has additional information 110 corresponding to the encoded data 1112 to 1114 stored in the GOP 1108.
2 to 1104 are stored.

[0019]

In the first conventional video signal recording method, when a video signal on which such additional information is superimposed is input, the additional information is stored in an MPEG format.
Since encoding by video information encoding means such as a video encoder is not considered at all, the encoded data recorded on the video recording medium does not include additional information.

On the other hand, in the video signal multiplexing method of the second conventional example, encoded data obtained by encoding video information and its additional information are recorded in advance on separate recording media, and then each The encoded data and additional information are sequentially read from the recording medium and multiplexed.

As described above, when performing non-real-time encoding of video information as in the second video signal multiplexing method, encoded data in which additional information is multiplexed can be obtained. However, when real-time encoding of video information is performed as in the video signal recording method of the first conventional example, multiplexing of additional information into encoded data has not been performed.

However, with the growing need for real-time encoding of video information in recent years, it is desirable to multiplex additional information with the encoded video information even when performing real-time encoding of video information. ing.

The present invention has been made in view of the above situation, and realizes multiplexing of encoded video information and its additional information even when performing real-time encoding of video information. It is an object to provide a video signal multiplexing device, a video signal multiplexing method, a video signal recording device, a video signal recording method, and a video recording medium.

[0024]

According to a first aspect of the present invention, there is provided a video signal multiplexing apparatus which adds video data coded data obtained by coding video information to a coded data obtained by coding the video information. A video signal multiplexing device for multiplexing information, comprising: video information encoding means for encoding video information to create encoded data; and temporarily storing encoded data from the video information encoding means in a fixed unit. Coded data storage means, additional information storage means for temporarily storing additional information related to the fixed unit of coded data, and the fixed unit stored by the coded data storage means. And multiplexing means for multiplexing the additional information stored by the additional information storing means at a predetermined position of the encoded data.

According to a second aspect of the present invention, in the video signal multiplexing apparatus according to the first aspect, the video information encoding means performs encoding in accordance with the MPEG1 or MPEG2 standard, and Is a 1-GOP or an n-times GOP, and the predetermined portion is a user data area of a GOP header.

According to a third aspect of the present invention, in the video signal multiplexing apparatus according to the first aspect, the additional information is data superimposed in a vertical blanking period of the video signal. Is what you do.

According to a fourth aspect of the present invention, in the video signal multiplexing apparatus according to the first aspect, the additional information is character data superimposed in a vertical blanking period of the video signal. It is assumed that.

[0028] A video signal multiplexing method according to claim 5 is a video signal multiplexing method for multiplexing additional information related to the coded data into coded data obtained by coding the video information. A video information encoding step of creating encoded data, an encoded data accumulating step of temporarily accumulating encoded data created by the video information encoding step until a predetermined unit is reached, An additional information accumulating step of temporarily accumulating additional information related to a unit of encoded data; and a predetermined location of the fixed unit of encoded data accumulated in the encoded data accumulating step, the additional information accumulating step includes: A multiplexing step of multiplexing the accumulated additional information.

A video signal multiplexing method according to a sixth aspect of the present invention is the video signal multiplexing method according to the fifth aspect, wherein in the video information encoding step, MPEG1 or MPEG2 is used.
Encoding is performed according to the standard, and the certain unit is 1 GOP
Or a GOP multiplied by n times, and the predetermined portion is a GOP
It is characterized by being a user data area of the header.

According to a seventh aspect of the present invention, in the video signal multiplexing method according to the fifth aspect, the additional information is data superimposed in a vertical blanking period of the video signal. Is what you do.

In the video signal multiplexing method according to claim 8, in the video signal multiplexing method according to claim 5, the additional information is character data superimposed during a vertical blanking period of the video signal. It is assumed that.

A video signal recording apparatus according to a ninth aspect is a video signal recording apparatus for recording encoded data obtained by encoding video signal video information and additional information related to the encoded data on a video recording medium. A video information encoding unit for encoding video information and generating encoded data; and a fixed unit of encoded data from the video information encoding unit, and additional information related to the fixed unit of encoded data. While securing the additional information recording area for recording, the encoded data is recorded on the video recording medium, and the additional information recording position indicating the position of the additional information recording area in the encoded data on the video recording medium. Coded data recording means for creating information; and coded data recorded on a video recording medium according to the additional information recording position information created by the coded data recording means. Is characterized in that an additional information recording means for recording the additional information recording area in the data.

According to a tenth aspect of the present invention, in the video signal recording apparatus according to the ninth aspect, the video information encoding means performs encoding according to the MPEG1 or MPEG2 standard, and the fixed unit is: 1 GOP or n
This is a double GOP, and the additional information recording area in the encoded data is a user data area of a GOP header.

According to an eleventh aspect of the present invention, in the video signal recording apparatus according to the ninth aspect, the additional information is data superimposed in a vertical blanking period of the video signal. It is.

According to a twelfth aspect of the present invention, in the video signal recording apparatus according to the ninth aspect, the additional information is character data superimposed during a vertical blanking period of the video signal. Things.

A video signal recording method according to claim 13 is a video signal recording method for recording encoded data obtained by encoding video information and additional information related to the encoded data, wherein the video information is encoded. A video information encoding step of creating encoded data; and a fixed unit of encoded data obtained in the video information encoding step, for recording additional information related to the fixed unit of encoded data. While securing the additional information recording area, the encoded data is recorded on the video recording medium, and additional information recording position information indicating the position of the additional information recording area in the encoded data on the video recording medium is created. An encoded data recording step, and a code recorded on a video recording medium in accordance with the additional information recording position information created in the encoded data recording step. Is characterized in that it has provided and additional information recording step of recording the additional information recording area in the data.

According to a fourteenth aspect of the present invention, in the video signal recording method according to the thirteenth aspect, in the video information encoding step, MPEG1 or MPEG2 is used.
Encoding is performed according to the standard, and the certain unit is 1 GOP
Alternatively, the GOP is an n-times GOP, and the additional information recording area in the encoded data is a user data area of a GOP header.

According to a fifteenth aspect of the present invention, in the video signal recording method according to the thirteenth aspect, the additional information is data superimposed in a vertical blanking period of the video signal. It is.

A video signal recording method according to a sixteenth aspect is the video signal recording method according to the thirteenth aspect, wherein the additional information is character data superimposed in a vertical blanking period of the video signal. Things.

A video signal multiplexing device according to claim 17 is
What is claimed is: 1. A video signal multiplexing apparatus for multiplexing additional information related to encoded data with encoded data obtained by encoding video information, comprising: video information encoding means for encoding video information to generate encoded data. And additional information storage means for temporarily storing additional information related to the coded data, and the additional information storage means at a predetermined position of the coded data in a fixed unit from the video information coding means. Multiplexing means for multiplexing additional information relating to the encoded data temporally preceding the encoded data of the fixed unit.

A video signal multiplexing device according to claim 18 is
18. The video signal multiplexing device according to claim 17, wherein said video information encoding means performs encoding according to MPEG1 or MPEG2 standard, and said fixed unit is 1 GOP or n-times GOP, and said predetermined unit is Is a user data area of the GOP header.

A video signal multiplexing apparatus according to claim 19 is
18. The video signal multiplexing device according to claim 17, wherein the additional information is data superimposed during a vertical blanking period of the video signal.

A video signal multiplexing apparatus according to claim 20 is:
18. The video signal multiplexing device according to claim 17, wherein the additional information is character data superimposed during a vertical blanking period of the video signal.

A video signal multiplexing method according to claim 21 is
What is claimed is: 1. A video signal multiplexing method for multiplexing additional information related to coded data on coded data obtained by coding video information, comprising: a video information coding step of coding video information to generate coded data. And an additional information storage step of temporarily storing additional information related to the encoded data;
At a predetermined position of the coded data of a fixed unit created in the video information coding step, the coded data related to the coded data temporally earlier than the coded data of the fixed unit stored in the additional information storing step is stored. And a multiplexing step of multiplexing the additional information.

A video signal multiplexing method according to claim 22 is as follows:
22. The video signal multiplexing method according to claim 21, wherein said video information encoding step comprises MPEG1 or MPE.
Encoding is performed according to the G2 standard, and the certain unit is 1G
OP or n-times GOP, and the predetermined portion is GOP
It is a user data area of the OP header.

A video signal multiplexing method according to claim 23 is
22. The video signal multiplexing method according to claim 21, wherein the additional information is data superimposed during a vertical blanking period of the video signal.

The video signal multiplexing method according to claim 24 is
22. The video signal multiplexing method according to claim 21, wherein the additional information is character data superimposed during a vertical blanking period of the video signal.

A video recording medium according to a twenty-fifth aspect is a video recording medium for recording multiplexed data in which additional information related to the coded data is multiplexed on coded data obtained by coding the video information. And multiplexed data obtained by multiplexing additional information related to coded data temporally earlier than the coded data of the fixed unit at a predetermined position of the coded data of the fixed unit obtained by coding the video information. It is characterized by doing.

A video recording medium according to a twenty-sixth aspect is the video recording medium according to the twenty-fifth aspect, wherein the encoded data is data obtained by encoding video information in accordance with the MPEG1 or MPEG2 standard. The fixed unit is a 1 GOP or an n-fold GOP, and the predetermined portion is a user data area of a GOP header.

A video recording medium according to a twenty-seventh aspect is the video recording medium according to the twenty-fifth aspect, wherein the additional information is data superimposed during a vertical blanking period of a video signal. .

According to a twenty-eighth aspect of the present invention, in the video recording medium according to the twenty-fifth aspect, the additional information is character data superimposed during a vertical blanking period of a video signal. is there.

[0052]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 A general concept of the video signal multiplexing apparatus and the video signal multiplexing method according to the first embodiment of the present invention will be described.

FIG. 1 is a block diagram showing a configuration of a video signal multiplexer S1 according to Embodiment 1 of the present invention. FIG.
As shown in (1), the video signal multiplexing device S1 includes a video information coding unit 102, a coded data storage unit 104, an additional information storage unit 106, and a multiplexing unit 107.

Hereinafter, the operation of the video signal multiplexing device S1 according to the first embodiment of the present invention will be described.

First, the video information 101 is encoded when input to the video information encoding means 102, and the encoded data 10
It is output as 3. The encoded data 103 output from the video information encoding unit 102 is stored in the encoded data storage unit 1.
04 and accumulated until a certain unit is reached. On the other hand, the additional information 105 is input to the additional information storage means 106 at the same time when the corresponding video information 101 is input to the video information encoding means 102, and is temporarily stored until a certain unit is reached.

Next, the coded data 103 stored in the coded data storage means 104 and the additional information storage means 106
When each of the pieces of additional information 105 stored in... Becomes a certain unit, the encoded data 103 and the additional information 105 are sent to the multiplexing unit 107. The multiplexing means 107 multiplexes the additional information 105 at a predetermined position of the encoded data 103 to become encoded data 108. Then, the encoded data 108 is recorded on the video recording medium 110 by the encoded data recording means 109.

As described above, according to the video signal multiplexing apparatus S1 according to the first embodiment of the present invention, the coded data 103 obtained by coding the video information 101 and the additional information 105 are stored in a fixed unit in the coded data. Since both are multiplexed after being stored in the means 104 and the encoded data storage means 106,
While encoding the input video information 101, the additional information 105 can be multiplexed on the encoded data 103 in real time, and the encoded data 10 including the additional information 105 can be multiplexed.
8 can be obtained in real time.

Next, a video signal multiplexing apparatus and a video signal multiplexing method according to the first embodiment of the present invention will be specifically described.

FIG. 4 is a block diagram showing the configuration of the video signal multiplexer S4 according to the first embodiment. As shown in FIG. 4, the video signal multiplexing device S4 includes an MPEG video encoder 404 corresponding to the video information encoding means 102.
, A buffer memory 406 corresponding to the encoded data storage unit 104, a buffer memory 408 corresponding to the additional information storage unit 106, and a multiplexing unit 409 corresponding to the multiplexing unit 107.

Hereinafter, the first embodiment of the present invention will be described with reference to FIG.
The operation of the video signal multiplexing device S4 will now be described.

First, for example, when a video signal 401 in the NTSC format in which a closed caption 407 is superimposed during a vertical blanking period is input to a closed caption clipping unit 402, the video signal 401 is converted into a video by the closed caption clipping unit 402. Information 40
3 and a closed caption 407 are output separately.

Next, the video information 403 output from the closed caption clipping unit 402 is input to the MPEG video encoder 404 and encoded in the MPEG format to create an MPEG stream 405. MPE
The MPEG stream 405 output from the G video encoder 404 is temporarily stored in the buffer memory 406. At the same time, the closed caption 407 output from the closed caption cutout unit 402
Are also temporarily stored in the buffer memory 408.

Next, when the MPEG stream 405 and the closed caption 407 for one GOP are stored in the buffer memory 406 and the buffer memory 408, these data are sent to the multiplexing unit 409.

The multiplexing unit 409 stores the input 1 in the user data area in the GOP header of the input GOP.
Closed captions 407 for GOPs are multiplexed. Here, the amounts of the MPEG stream 405 and the closed caption 407 stored in the buffer memory 406 and the buffer memory 408, respectively, are 1G.
Although it is OP, it may be actually another arbitrary unit.

Next, the MPEG stream 410 in which the closed captions 407 are multiplexed is sent to the multiplexing unit 4.
09 and is recorded on the optical disc 412 by the stream recording unit 411. Here, the MPEG stream 410 in which the closed captions 407 are multiplexed is recorded on the optical disc 412, but it is of course possible to send the MPEG stream 410 as it is through the transmission line.

Next, FIG. 7 shows a video signal multiplexing apparatus and a video signal multiplexing method according to Embodiment 1 of the present invention.
A video signal on which a closed caption is superimposed, and M
FIG. 3 is a diagram illustrating a configuration of a PEG stream.

In the figure, a video signal 701 is composed of video information and closed captions.
And a closed caption 702, a frame 706 and a closed caption 703, and a frame 707 and a closed caption 704, respectively.

The MPEG stream 70 obtained by the video signal multiplexer according to the first embodiment of the present invention.
9 includes a plurality of GOPs, one of which includes a GOP 708.

The GOP 708 contains a GOP header 710
And a plurality of pieces of encoded data are stored. With the GOP header 710 at the head, the frame 707 is encoded from the encoded data 712 obtained by encoding the frame 705 and the encoded data 713 obtained by encoding the frame 706. Up to coded data 714 are stored in GOP 708.

The user data area 711 in the GOP header 710 has a closed caption 7 corresponding to the encoded data 712 to 714 stored in the GOP 708.
02 to 704 are stored.

Hereinafter, the operation of the video signal multiplexer S4 according to the first embodiment of the present invention will be described in more detail with reference to FIGS.

First, when the video signal 701 is input to the closed caption clipping unit 402, the closed caption clipping unit 402 sequentially separates the frames 705 to 707 as video information and the closed captions 702 to 704 as additional information. Output.

The closed caption cutout section 402
Are input to the MPEG video encoder 404, the GOP header 71
0, coded data 712 to coded data 714, and the GOP header 710, coded data 712
To coded data 714 are sequentially stored in the buffer memory 406. On the other hand, closed caption cutout unit 4
Closed captions 702-7 output from 02
04 are sequentially stored in the buffer memory 408.

Next, one GOP is stored in the buffer memory 406.
GOP header 710 and encoded data 7
12 to 714 are stored in the buffer memory 408.
Closed captions 702-704 for 1 GOP
Is accumulated, the GOP header 710 is output from the buffer memory 406 to the multiplexing unit 409, and the closed captions 702 to 704 are output to the buffer memory 40.
8 to the multiplexing unit 409.

Then, the multiplexing unit 409 sets the GOP
The closed captions 702 to 704 are written in the user data area 711 in the header 710, and the GOP header 710 in which the closed captions 702 to 704 are written is recorded on the optical disk 412 via the stream recording unit 411.

Next, the encoded data 712 to 714 stored in the buffer memory 406 are sequentially output, written to the optical disk 412 via the multiplexing unit 409 and the stream recording unit 411, and the GOP 708 is recorded on the optical disk. .

As described above, according to the video signal multiplexing apparatus S 4 according to the first embodiment of the present invention, the video signal 401 on which the closed caption 407 is superimposed is subjected to the video information 403 and the closed caption 407 by the closed caption extraction unit 402. The MPEG stream 405 and the closed caption 407, in which the video information 403 is encoded by the MPEG video encoder 404, are stored for one GOP in the buffer memory 406 and the buffer memory 408, respectively. Closed caption 407 in real time while encoding video information 403
It can be multiplexed to the PEG stream 405, and the MPEG stream 410 including the closed caption 407 can be obtained in real time.

Embodiment 2 A general concept of the video signal recording device and the video signal recording method according to the second embodiment of the present invention will be described.

FIG. 2 is a block diagram showing a configuration of a video signal recording device S2 according to the second embodiment of the present invention. As shown in FIG. 2, the video signal recording device S2 includes a video information encoding unit 202, an encoded data recording unit 204, and an additional information recording unit 207.

Hereinafter, the operation of the video signal recording device S2 according to the second embodiment will be described. First, the video information 20
1 is encoded when input to the video information encoding means 202, and is output as encoded data 203. And
The encoded data 203 output from the video information encoding unit 202 is recorded on the video recording medium 208 by the encoded data recording unit 204. At this time, the coded data recording unit 204 multiplexes the additional information 206 on a predetermined portion of the coded data 203 in a certain unit on the video recording medium.
The position of the predetermined location on the video recording medium 208 is stored as additional information recording position information 205.

On the other hand, the additional information 206 is input to the additional information recording means 207 at the same time when the corresponding video information 201 is input to the encoded data recording means 204. The additional information recording unit 207 records the additional information 206 at a predetermined position on the video recording medium 208 according to the additional information recording position information 205 input from the encoded data recording unit 204.

As described above, by recording the encoded data 203 obtained by encoding the video information 201 and the additional information 206 on the video recording medium 208,
The multiplexing of the encoded data 203 and the additional information 206 is performed above.

As described above, according to the video signal recording apparatus S2 according to the second embodiment of the present invention, the input video information 201 is encoded, the encoded data 203 is recorded on the video recording medium 208, while the In accordance with the additional information recording position information 205, the additional information 206 to be
Of the encoded data 203 and the additional information 20 on the video recording medium 208
6, the encoded data 203 including the additional information 206 can be created on the video recording medium 208 in real time.

A video signal recording apparatus and a video signal recording method according to the second embodiment of the present invention will be specifically described.

FIG. 5 is a block diagram showing a configuration of a video signal recording device S5 according to the second embodiment. As shown in the figure, the video signal recording device S5 includes a video information encoding unit 20.
2 and an MPEG video encoder 504 corresponding to the encoded data recording unit 204 and a stream recording unit 5 corresponding to the encoded data recording unit 204.
06, buffer memory 509, and additional information recording means 2
07, and a closed caption recording unit 510 corresponding to.

The operation of the video signal recording device S5 according to the second embodiment of the present invention will be described below.

First, for example, when an NTSC format video signal 501 on which a closed caption 508 is superimposed during a vertical blanking period is input to the closed caption clipping unit 502, the video signal 501 is converted by the closed caption clipping unit 502 into video information. 503
And a closed caption 508 are output separately.

Next, the video information 503 output from the closed caption clipping means 502 is input to an MPEG video encoder 504, and is encoded in the MPEG format to create an MPEG stream 505. Then, the M output from the MPEG video encoder 504 is output.
The PEG stream 505 is recorded on the optical disk 511 by the stream recording unit 506. At this time, the stream recording unit 506 stores the position of the user data area in the GOP header of each GOP included in the MPEG stream 505 on the optical disk 511 as closed caption recording position information 507.

On the other hand, the closed caption 508 output from the closed caption extracting means 502
Are temporarily stored in the buffer memory 509. Then, when the closed caption 508 for one GOP is accumulated in the buffer memory 509, the closed caption 508 for one GOP is sent to the closed caption recording unit 510.

Next, the closed caption recording section 5
10 according to the closed caption recording position information 507 sent from the stream recording unit 506.
The closed caption 508 corresponding to the OP is stored in the G stream of the MPEG stream 505 already recorded on the optical disc 511.
Write to the user data area in the GOP header of the OP. Although the unit stored in the buffer memory 509 is 1 GOP here, it may be stored in the buffer memory 509 in any other unit.

As described above, by recording the MPEG stream 505 and the closed caption 508 on the optical disc 511, the MPEG stream 505 and the closed caption 508 are multiplexed on the optical disc 511.

In the second embodiment, the procedure for storing closed captions 508 in buffer memory 509 is omitted, and closed caption cutout unit 50 is omitted.
2 can be directly recorded in the user data area in the GOP header of the GOP on the optical disk 511 indicated by the closed caption recording position information 507.

In the video signal recording apparatus and the video signal recording method according to the second embodiment of the present invention, the configurations of the video signal on which the closed caption is superimposed and the MPEG stream are the same as those in the first embodiment of the present invention. Since there is, refer to FIG.

Next, the operation of the video signal recording device S5 according to the second embodiment of the present invention will be described in more detail with reference to FIGS.

First, when the video signal 701 is input to the closed caption clipping unit 502, the closed caption clipping unit 502 sequentially separates the frames 705 to 707 as video information and the closed captions 702 to 704 as additional information. Output.

Closed caption cutout section 502
Are input to the MPEG video encoder 504, a GOP header 710 and encoded data 712 to 714 are created in this order, and the GOP header 710 and the encoded data 712 to 71
4 is the optical disk 51 by the stream recording unit 506
1 is recorded. At this time, the stream recording unit 506
The GOP header 710 is recorded on the optical disk 511 with the user data area 711 left blank, and
The position of the user data area 711 of the OP header 710 on the optical disk 511 is recorded as closed caption recording position information 507.

On the other hand, the closed captions 702 to 702 output from the closed caption cutout section 502
704 are sequentially stored in the buffer memory 509, and 1 GO
When the closed captions 702 to 704 for P are accumulated, these closed captions 702 to 704 are stored.
704 is output to the closed caption recording unit 510. Then, the closed caption recording unit 510
Writes the closed captions 702 to 704 in the user data area 711 of the GOP header 710 on the optical disk according to the closed caption recording position information 507 transmitted from the stream recording unit 506.

According to the video signal recording device S5 according to the second embodiment of the present invention, after the video signal 501 is separated into the video information 503 and the closed caption 507 by the closed caption cutout section 502, the video signal
3 encoded by the MPEG encoder 504
The G stream 505 is sequentially recorded on the optical disk 511, and the GOP of each GOP of the MPEG stream 505 is recorded.
The position information of the user data area in the header on the optical disk 511 is held, and the closed caption 508 is read by referring to the position information.
Since the multiplexing is performed on the EG stream 505, the closed caption 507 can be multiplexed on the MPEG stream 505 in real time while encoding the input video information 503.

The video signal recording apparatus S5 according to the second embodiment of the present invention is different from the first embodiment in that a large-capacity buffer memory required for temporarily storing an MPEG stream is not required. Therefore, simplification of the system and cost reduction can be achieved.

Embodiment 3 A general concept of a video signal multiplexing apparatus and a video signal multiplexing method according to a third embodiment of the present invention will be described.

FIG. 3 is a block diagram showing a configuration of a video signal multiplexing device S3 according to Embodiment 3 of the present invention. FIG.
As shown in (1), the video signal multiplexing device S3 includes a video information encoding unit 302, an additional information storage unit 305, and a multiplexing unit 306.

Hereinafter, the operation of the video signal multiplexing device S3 according to the third embodiment of the present invention will be described.

First, the video information 301 is encoded by the video information encoding means 302, and encoded data 303 is created. The encoded data 303 output by the video information encoding unit 302 is input to the encoded data recording unit 308 via the multiplexing unit 306, and is recorded on the video recording medium 309 by the encoded data recording unit 308. On the other hand, the additional information 304 is input to the additional information storage means 305 at the same time when the corresponding video information 301 is input to the video information encoding means 302.

Next, when the additional information 304 stored in the additional information storage means 305 has a certain unit, the additional information 304 of the certain unit is sent to the multiplexing means 306. The multiplexing means 306 converts the fixed unit of additional information 304 into the encoded data 30 corresponding to the fixed unit of additional information 304.
The data is multiplexed with the third and subsequent encoded data. The encoded data 307 in which the additional information 304 is multiplexed is recorded on the video recording medium 309 by the encoded data recording means 308.

As described above, according to the video signal multiplexing apparatus S3 according to the third embodiment of the present invention, the input video information 301 is coded, and Since the additional information 304 related to the encoded data 303 temporally earlier than the encoded data 303 is multiplexed, the additional information 304 is encoded in real time while the input video information 301 is encoded.
3 and coded data 307 including the additional information 304 can be obtained in real time.

Next, a video signal multiplexing apparatus and a video signal multiplexing method according to the third embodiment of the present invention will be specifically described.

FIG. 6 is a block diagram showing a configuration of a video signal multiplexer S6 according to Embodiment 3 of the present invention. As shown in the figure, the video signal multiplexing device S6 includes an MPEG video encoder 60 corresponding to the video information encoding means 302.
4, a buffer memory 607 corresponding to the additional information storage unit 305, and a multiplexing unit 60 corresponding to the multiplexing unit 306.
8 is provided.

Hereinafter, a third embodiment of the present invention will be described with reference to FIG.
The operation of the video signal multiplexing device S6 will now be described.

First, for example, closed caption 6
When the NTSC format video signal 601 on which 06 is superimposed is input to the closed caption clipping unit 602, the video signal 601 is separated into video information 603 and closed caption 606 by the closed caption clipping unit 602 and output. .

Next, the video information 603 output from the closed caption clipping means 602 is input to the MPEG video encoder 604, and is encoded in the MPEG format to create an MPEG stream 605. Then, the M output from the MPEG video encoder 604
The PEG stream 605 is input to the stream recording unit 610 via the multiplexing unit 608,
10 is recorded on the optical disk 611. On the other hand, the closed caption 606 output from the closed caption extraction unit 602 is temporarily stored in the buffer memory 607.

Next, when the closed captions 606 for one GOP are stored in the buffer memory 607,
The closed caption 606 for one GOP stored in the buffer memory 607 is sent to the multiplexing unit 608.

At this time, multiplexing section 608 performs the following GOP
Is input from the MPEG video encoder 604, and the 1G input from the buffer memory 607 is stored in the user data area in the GOP header of the GOP.
The closed captions 606 for OPs are multiplexed.
Note that, here, the multiplexing unit 608 multiplexes the MPEG stream 605 and the closed caption 606 for each GOP unit, but may actually multiplex the data in any other unit.

Next, the MPEG stream 609 in which the closed captions 606 are multiplexed is sent to the multiplexing unit 6.
08 and recorded on the optical disc 611 by the stream recording unit 610.

In the third embodiment, multiplexing section 60
8 is a GO input immediately after the closed caption 606 for one GOP stored in the buffer memory 607.
POP is stored in the GOP header.
However, the information may be stored in a GOP subsequent thereto.

Next, FIG. 8 is a diagram showing a configuration of a video signal on which closed caption is superimposed and an MPEG stream in the video signal multiplexing apparatus and the video signal multiplexing method according to the third embodiment of the present invention. .

In the figure, a video signal 801 comprises video information and closed captions,
And a closed caption 802, a frame 807 and a closed caption 803, a frame 808 and a closed caption 804, and a frame 809 and a closed caption 805, respectively.

The MPEG stream 811 is composed of a plurality of GOPs.
GOP 820, GOP 810, and GOP 821 are included therein. The GOP also moves to the right and the GOP
It is.

The GOP 810 includes a GOP header 812
And a plurality of pieces of encoded data, and a frame 809 is encoded from encoded data 817 obtained by encoding the frame 807 and encoded data 818 obtained by encoding the frame 808 with the GOP header 812 at the head. Up to coded data 819 are stored in GOP 810.

In the user data area 813 in the GOP header 812, a closed caption corresponding to the encoded data stored in the GOP 820 immediately before the GOP 810 (only the closed caption 802 is shown in FIG. 8). .

The closed captions 803 to 805 corresponding to the encoded data 817 to 819 stored in the GOP 810 are stored in the user data area 815 in the GOP header 814 of the GOP 821 which is the GOP immediately after the GOP 810.

Next, the operation of the video signal multiplexer S6 according to the third embodiment of the present invention will be described in more detail with reference to FIGS.

First, when the video signal 801 is input to the closed caption clipping unit 602, the closed caption clipping unit 602 sequentially separates frames 806 to 809 as video information and closed captions 802 to 805 as additional information. Is output.

Closed caption cutout section 602
Are output to the MPEG video encoder 604, the frames 806 to 809 output from the
6, GOP header 812, encoded data 817 to 819
, And output to the multiplexing unit 608. On the other hand, the closed captions 802 to 805 output from the closed caption cutout unit 602 are sequentially stored in the buffer memory 607.

[0124] When the GOP header 812 is input, the multiplexing unit 608 outputs the GO data stored in the buffer memory 607.
The closed caption corresponding to the encoded data stored in P820 is extracted (only the closed caption 802 is shown in FIG. 5), and the GOP header 81
2 is stored in the second user data area 813 and output to the stream recording unit 610. Then, the GOP header 812 is recorded on the optical disk 611 by the stream recording unit 610.

Next, the coded data 817 to 819 are output in order from the multiplexing unit 608, and are written to the optical disk 611 via the stream recording unit 610.
810 is recorded on the optical disc 611.

At the time of encoding the next GOP 821, the multiplexing unit 608 outputs the MPEG video encoder 60
4, when the GOP header 814 is input, the closed caption 803 stored in the buffer memory 607
.. 805 and write it to the user data area 815 of the GOP header 814.

As described above, according to the video signal multiplexing apparatus S6 according to the third embodiment of the present invention, the video signal 601 on which the closed caption 606 is superimposed is subjected to the video information 603 and the closed caption 606 by the closed caption extraction unit 602. , The video information 603 is encoded, and the GOP of the MPEG stream 605 is encoded.
Since the closed caption 606 relating to the GOP temporally earlier than the GOP is multiplexed in the user data area in the GOP header of the GOP, the closed caption 606 is encoded into the MPEG stream 605 in real time while the input video information 603 is encoded. It is possible to multiplex and obtain an MPEG stream 609 including a closed caption 606 in real time.

According to the video signal multiplexing apparatus S6 according to the third embodiment of the present invention, unlike the first embodiment,
Since the configuration does not require a large-capacity buffer memory for temporarily storing the PEG stream, the system can be simplified and the cost can be reduced.

In the first to third embodiments of the present invention, MPEG is used as the encoding method. However, the encoding method is not limited to MPEG, and any encoding method can be used.

Further, in the first to third embodiments of the present invention, the closed caption superimposed on the video signal is described as the additional information. However, the present invention is not limited to the closed caption superimposed on the video signal. Information about

In the first to third embodiments of the present invention, the MPEG stream as encoded data and the closed caption as additional information are multiplexed for each GOP. It is also possible to perform multiplexing for each number.

Further, in the first to third embodiments of the present invention, the coded data obtained by coding the video information and the additional information are multiplexed. It is, of course, possible to multiplex encoded data.

In the first to third embodiments of the present invention, the buffer memory is used as the coded data storage means or the additional information storage means, but a recording medium such as a magnetic disk or an optical disk may be used. .

In Embodiments 1 to 3 of the present invention, an optical disk is used as a video recording medium, but any other recording medium can be used.

[0135]

As described above, according to the video signal multiplexing apparatus of the first aspect of the present invention, additional information relating to the coded data is multiplexed on the coded data obtained by coding the video information. A video signal multiplexing device for coding video information and generating coded data, and temporarily storing coded data from the video information coding unit until a predetermined unit is reached. Coded data storage means, additional information storage means for temporarily storing additional information relating to the fixed unit of coded data, and the fixed unit coded data stored by the coded data storage means. Multiplexing means for multiplexing the additional information accumulated by the additional information accumulating means at a predetermined location, wherein video information is encoded by the video information encoding means. The encoded data and the additional information are stored in the encoded data storage unit and the additional information storage unit in a fixed unit, and then both data are multiplexed by the multiplexing unit. Later, the additional information can be multiplexed to the encoded data in real time, and the encoded data including the additional information can be created in real time.

Further, according to the video signal multiplexing apparatus according to the second aspect of the present invention, in the video signal multiplexing apparatus according to the first aspect, the video information encoding means includes a code according to the MPEG1 or MPEG2 standard. The predetermined unit is a 1 GOP or an n-times GOP, and the predetermined portion is a user data area of a GOP header.
After encoding according to the PEG1 or MPEG2 standard, the additional information can be multiplexed to the encoded data in real time, and the encoded data including the additional information can be created in real time.

Further, according to the video signal multiplexing method according to the fifth aspect of the present invention, a video signal multiplexing method for multiplexing additional information related to the coded data with coded data obtained by coding the video information. A video information encoding step of encoding video information and creating encoded data, and an encoding step of temporarily storing the encoded data created by the video information encoding step until a fixed unit is reached. A data accumulating step, an additional information accumulating step for temporarily accumulating additional information related to the fixed unit of encoded data,
A multiplexing step of multiplexing the additional information accumulated in the additional information accumulating step at a predetermined position of the encoded data in a fixed unit accumulated in the encoded data accumulating step. Since the input video information is encoded, the additional information can be multiplexed with the encoded data in real time,
There is an effect that encoded data including additional information can be created in real time.

According to a video signal multiplexing method according to a sixth aspect of the present invention, in the video signal multiplexing method according to the fifth aspect, the video information encoding step comprises the step of:
The encoding is performed according to the 1 or MPEG2 standard, and the predetermined unit is 1 GOP or n-times GOP, and the predetermined portion is a user data area of a GOP header. After the input video information is encoded according to the MPEG1 or MPEG2 standard, the additional information can be multiplexed to the encoded data in real time, and the encoded data including the additional information can be created in real time. .

According to the video signal recording apparatus of the ninth aspect of the present invention, encoded data obtained by encoding video signal video information and additional information relating to the encoded data are recorded on a video recording medium. A video signal recording device, comprising: video information encoding means for encoding video information to generate encoded data; and encoding the fixed unit in the encoded data of a fixed unit from the video information encoding means. While securing the additional information recording area for recording additional information related to the data, while recording the encoded data on a video recording medium,
Encoded data recording means for creating additional information recording position information indicating a position on the video recording medium of an additional information recording area in the encoded data; and the additional information is created by the encoded data recording means. According to the additional information recording position information, additional information recording means for recording in the additional information recording area in the encoded data recorded on the video recording medium, characterized in that the input video information Encoded by video information encoding means, while the encoded data is recorded on a video recording medium by the encoded data recording means, additional information to be input according to the additional information recording position information created by the encoded data recording means, Since the data is recorded in a predetermined location on the video recording medium in real time, the encoded data and the additional information can be multiplexed in real time on the video recording medium. There is an effect.

According to a video signal recording apparatus according to claim 10 of the present invention, in the video signal recording apparatus according to claim 9, the video information encoding means performs encoding according to the MPEG1 or MPEG2 standard. The fixed unit is 1 GOP or n-times GOP, and the additional information recording area in the encoded data is a user data area of a GOP header. After the information is encoded according to the MPEG1 or MPEG2 standard, the additional information can be multiplexed to the encoded data in real time, and the encoded data including the additional information can be created in real time.

Further, according to a video signal recording method according to claim 13 of the present invention, there is provided a video signal recording method for recording coded data obtained by coding video information and additional information related to the coded data. A video information encoding step of encoding video information and creating encoded data; and a fixed unit of encoded data obtained in the video information encoding step, the video data being associated with the fixed unit of encoded data. While securing the additional information recording area for recording additional information, while recording the encoded data on a video recording medium,
An encoded data recording step of creating additional information recording position information indicating a position on the video recording medium of an additional information recording area in the encoded data; and the additional information is created by the encoded data recording step. Recording an additional information recording area in the encoded data to be recorded on the video recording medium in accordance with the additional information recording position information. There is an effect that coded data and additional information can be multiplexed in real time.

According to a video signal recording method according to claim 14 of the present invention, in the video signal recording method according to claim 13, the video information encoding step comprises the step of:
1 or MPEG2 standard, the fixed unit is 1 GOP or n-times GOP, and the additional information recording area in the encoded data is a user data area of a GOP header. Input video information to MPEG1 or MPE.
After encoding according to the G2 standard, the additional information can be multiplexed with the encoded data in real time, and the encoded data including the additional information can be created in real time.

According to the video signal multiplexing apparatus of the seventeenth aspect of the present invention, the video signal multiplexing apparatus multiplexes additional information related to the coded data on coded data obtained by coding the video information. A device for encoding video information,
Video information encoding means for creating encoded data, additional information storage means for temporarily storing additional information relating to the encoded data, and a predetermined unit of encoded data of a certain unit from the video information encoding means. Multiplexing means for multiplexing additional information related to encoded data temporally earlier than the fixed unit of encoded data accumulated by the additional information accumulating means. The input video information is encoded by the video information encoding means, and a code temporally earlier than the encoded data stored by the additional information storage means at a predetermined position in the encoded data. Since the additional information relating to the encoded data is multiplexed, it is possible to multiplex the additional information into the encoded data in real time after the input video information is encoded. There is an effect that can be created in real time.

Further, according to the video signal multiplexing apparatus according to claim 18 of the present invention, in the video signal multiplexing apparatus according to claim 17, the video information encoding means comprises an MPEG1
Alternatively, the encoding is performed in accordance with the MPEG2 standard, and the predetermined unit is a 1 GOP or n-times GOP, and the predetermined portion is a user data area of a GOP header. After encoding the video information to be encoded according to the MPEG1 or MPEG2 standard, the additional information can be multiplexed to the encoded data in real time, and the encoded data including the additional information can be created in real time.

According to a video signal multiplexing method according to claim 21 of the present invention, a video signal multiplexing method for multiplexing additional information related to the coded data with coded data obtained by coding the video information. Encoding video information,
A video information encoding step of creating encoded data, an additional information storing step of temporarily storing additional information related to the encoded data, and a predetermined unit of encoded data of the fixed unit created by the video information encoding step. At a given location,
A multiplexing step of multiplexing additional information related to encoded data temporally earlier than the fixed unit of encoded data accumulated in the additional information accumulating step. After encoding the input video information, the additional information can be multiplexed to the encoded data in real time, and the encoded data including the additional information can be created in real time.

According to a video signal multiplexing method according to claim 22 of the present invention, in the video signal multiplexing method according to claim 21, the video information encoding step includes the step of:
Perform encoding according to the EG1 or MPEG2 standard,
The fixed unit is 1 GOP or n times GOP,
Since the predetermined portion is characterized in that it is a user data area of a GOP header, after input video information is encoded according to the MPEG1 or MPEG2 standard, additional information is multiplexed on the encoded data in real time. Thus, there is an effect that encoded data including additional information can be created in real time.

According to the video recording medium of claim 25 of the present invention, the coded data obtained by coding the video information includes:
A video recording medium for recording multiplexed data in which the additional information related to the coded data is multiplexed, and in a predetermined portion of the coded data of a fixed unit obtained by coding the video information,
Since the multiplexed data in which the additional information related to the encoded data temporally earlier than the encoded data of the certain unit is multiplexed is recorded, the encoded data including the additional information is recorded. There is an effect that can be obtained in real time.

According to a video recording medium according to claim 26 of the present invention, in the video recording medium according to claim 25, the encoded data is obtained by encoding video information according to the MPEG1 or MPEG2 standard. And the predetermined unit is a GOP of 1 GOP or n times, and the predetermined portion is a user data area of a GOP header. Alternatively, there is an effect that multiplexed data in which additional information is multiplexed with coded data coded according to the MPEG2 standard can be obtained in real time.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a video signal multiplexing device S1 according to a first embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of a video signal recording device S2 according to a second embodiment of the present invention.

FIG. 3 is a block diagram showing a configuration of a video signal multiplexing device S3 according to a third embodiment of the present invention.

FIG. 4 is a block diagram showing a configuration of a video signal multiplexing device S4 according to Embodiment 1 of the present invention.

FIG. 5 is a block diagram showing a configuration of a video signal recording device S5 according to a second embodiment of the present invention.

FIG. 6 is a block diagram illustrating a configuration of a video signal multiplexing device S6 according to Embodiment 3 of the present invention.

FIG. 7 illustrates a video signal multiplexing apparatus and a video signal multiplexing method according to a first embodiment of the present invention, and a video signal recording apparatus and a video signal recording method according to a second embodiment of the present invention.
A video signal on which a closed caption is superimposed, and M
FIG. 3 is a diagram illustrating a configuration of a PEG stream.

FIG. 8 is a diagram showing configurations of a video signal on which a closed caption is superimposed and an MPEG stream in the video signal multiplexing apparatus and the video signal multiplexing method according to the third embodiment of the present invention.

FIG. 9 is an explanatory diagram for describing a video signal recording method of a first conventional example.

FIG. 10 is an explanatory diagram for explaining a video signal multiplexing method according to a second conventional example.

FIG. 11 is a diagram showing a configuration of a video signal on which closed captions are superimposed and an MPEG stream in the video signal multiplexing method of the second conventional example.

[Explanation of symbols]

S1, S3, S4, S6 Video signal multiplexing device S2, S5 Video signal recording device 101, 201, 301, 403, 503, 603, 9
01, 1001 Video information 102, 202, 302 Video information encoding means 103, 108, 203, 303, 307, 712 Encoded data 104 Encoded data storage means 105, 206, 304, 209, 1006, 110
2, 1103, 1104 additional information 106, 305 additional information storage means 107, 306, 1009 multiplexing means 109, 204, 308, 904, 1004 coded data recording means 110, 208, 309, 905, 1012 video recording medium 205 addition Information recording position information 207, 1007 Additional information recording means 401, 501, 601, 701, 801, 950 Video signal 402, 502, 602 Closed caption cutout section 404, 504, 604, 902, 1002 MPEG
Video encoders 405, 410, 505, 605, 609, 709, 8
11,903,1003,1010,1109 MPE
G stream 406,408,509,607 Buffer memory 407,508,606,702,703,704,8
02, 803, 804, 805 Closed caption 409, 608 Multiplexer 411, 506, 610 Stream recorder 412, 511, 611 Optical disc 507 Closed caption recording position information 510 Closed caption recorder 705, 706, 707, 806, 807, 808,8
09, 1105, 1106, 1107 Video frame 708, 810, 820, 821, 1108 GOP 710, 812, 814, 1110 GOP header 711, 813, 815, 1111 User data area in GOP header 1005 Encoded data recording medium 1008 Additional information recording medium

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (reference) H04N 7/08 H04N 7/08 Z 5D110 7/081 7/13 Z 7/24 G11B 27/00 A 27/10 A F Term (reference) 5C053 FA23 GB06 GB12 GB37 GB38 JA16 KA04 KA05 KA08 KA24 LA14 5C059 KK00 MA00 PP04 PP14 RB01 RB09 RB15 RC34 SS06 SS12 UA02 UA38 5C063 AA02 AB03 AB07 AC01 AC05 AC10 CA11 DA03 DA03 DB03 G04 EB01 DE04 GK11 5D077 AA23 CA02 DC37 DD02 DE08 EA12 EA33 EA34 HA07 HC27 5D110 AA14 CA47 DA03 DA04 DA10 DE04 DE06 FA05

Claims (28)

[Claims] 1. An encoded data obtained by encoding video information,
What is claimed is: 1. A video signal multiplexing device for multiplexing additional information related to encoded data, comprising: video information encoding means for encoding video information to create encoded data; and a code from the video information encoding means. Coded data storage means for temporarily storing coded data until a fixed unit, additional information storage means for temporarily storing additional information related to the coded data of the fixed unit, and coded data storage Multiplexing means for multiplexing the additional information accumulated by the additional information accumulating means at a predetermined position of the fixed unit of encoded data accumulated by the means. apparatus. 2. The video signal multiplexing apparatus according to claim 1, wherein said video information encoding means comprises MPEG1 or MPE.
The video signal multiplexing apparatus, wherein encoding is performed in accordance with the G2 standard, wherein the predetermined unit is 1 GOP or n-times GOP, and the predetermined portion is a user data area of a GOP header. 3. The video signal multiplexing apparatus according to claim 1, wherein said additional information is data superimposed during a vertical blanking period of the video signal. 4. The video signal multiplexing apparatus according to claim 1, wherein said additional information is character data superimposed in a vertical blanking period of the video signal. 5. Encoded data obtained by encoding video information,
A video signal multiplexing method for multiplexing additional information related to the encoded data, comprising: a video information encoding step of encoding video information to generate encoded data; and a video information encoding step created by the video information encoding step. An encoded data accumulating step of temporarily accumulating encoded data until the encoded data reaches a fixed unit; an additional information accumulating step of temporarily accumulating additional information related to the encoded data of the fixed unit; A multiplexing step of multiplexing the additional information accumulated in the additional information accumulating step at a predetermined position of the coded data of a fixed unit accumulated in the accumulating step. Method. 6. The video signal multiplexing method according to claim 5, wherein, in the video information encoding step, encoding is performed according to MPEG1 or MPEG2 standard, and the certain unit is 1 GOP or n-times GOP. A video signal multiplexing method, wherein the predetermined portion is a user data area of a GOP header. 7. The video signal multiplexing method according to claim 5, wherein the additional information is data superimposed during a vertical blanking period of the video signal. 8. The video signal multiplexing method according to claim 5, wherein the additional information is character data superimposed during a vertical blanking period of the video signal. 9. A video signal recording apparatus for recording encoded data obtained by encoding video information and additional information related to the encoded data on a video recording medium, wherein the video information is encoded and the encoded data is encoded. A video information encoding unit to be created, and in the encoded data of a fixed unit from the video information encoding unit, an additional information recording area for recording additional information related to the fixed unit of encoded data is secured. While the encoded data is recorded on a video recording medium, and encoded data recording means for creating additional information recording position information indicating a position of the additional information recording area in the encoded data on the video recording medium; Additional information for recording the additional information in an additional information recording area in encoded data recorded on a video recording medium in accordance with additional information recording position information created by the encoded data recording means. A video signal recording device, comprising: an information recording unit. 10. The video signal recording device according to claim 9, wherein said video information encoding means is MPEG1 or MPE.
The video is characterized in that encoding is performed in accordance with the G2 standard, and the fixed unit is a 1 GOP or an n-times GOP, and the additional information recording area in the encoded data is a user data area of a GOP header. Signal recording device. 11. The video signal recording device according to claim 9, wherein the additional information is data superimposed during a vertical blanking period of the video signal. 12. The video signal recording device according to claim 9, wherein the additional information is character data superimposed during a vertical blanking period of the video signal. 13. Encoded data obtained by encoding video information,
And a video signal recording method for recording additional information related to the encoded data, comprising: a video information encoding step of encoding video information to create encoded data; The encoded data is recorded on a video recording medium while securing an additional information recording area for recording additional information related to the fixed unit of encoded data in the encoded data of the fixed unit. Encoded data recording step of creating additional information recording position information indicating the position of the additional information recording area in the encoded data on the video recording medium; and the additional information created by the encoded data recording step. Recording additional information in an additional information recording area in the encoded data recorded on the video recording medium according to the recording position information. The video signal recording method. 14. The video signal recording method according to claim 13, wherein, in the video information encoding step, encoding is performed according to MPEG1 or MPEG2 standard, and the certain unit is 1 GOP or n-times GOP, A video signal recording method, wherein the additional information recording area in the encoded data is a user data area of a GOP header. 15. The video signal recording method according to claim 13, wherein the additional information is data superimposed during a vertical blanking period of the video signal. 16. The video signal recording method according to claim 13, wherein the additional information is character data superimposed during a vertical blanking period of the video signal. 17. A video signal multiplexing apparatus for multiplexing additional information related to encoded data with encoded data obtained by encoding video information, wherein the encoded video information is encoded to generate encoded data. Video information encoding means; additional information storage means for temporarily storing additional information related to the encoded data; and additional information storage at a predetermined position of the fixed unit of encoded data from the video information encoding means. Accumulated by means,
A video signal multiplexing device comprising: multiplexing means for multiplexing additional information relating to coded data temporally earlier than the coded data of the fixed unit. 18. The video signal multiplexing device according to claim 17, wherein said video information encoding means is MPEG1 or MPE.
The video signal multiplexing apparatus, wherein encoding is performed in accordance with the G2 standard, wherein the predetermined unit is 1 GOP or n-times GOP, and the predetermined portion is a user data area of a GOP header. 19. The video signal multiplexing apparatus according to claim 17, wherein said additional information is data superimposed during a vertical blanking period of the video signal. 20. The video signal multiplexing apparatus according to claim 17, wherein said additional information is character data superimposed during a vertical blanking period of the video signal. 21. A video signal multiplexing method for multiplexing additional information related to coded data on coded data obtained by coding video information, wherein the video information is coded to generate coded data. A video information encoding step; an additional information accumulating step for temporarily accumulating additional information related to the encoded data; and an additional information added to a predetermined portion of the encoded data of a fixed unit created in the video information encoding step A multiplexing step of multiplexing additional information related to the encoded data temporally preceding the fixed unit of encoded data accumulated in the information accumulating step. . 22. The video signal multiplexing method according to claim 21, wherein in the video information encoding step, encoding is performed according to MPEG1 or MPEG2 standard, and the fixed unit is 1 GOP or n-times GOP. A video signal multiplexing method, wherein the predetermined portion is a user data area of a GOP header. 23. The video signal multiplexing method according to claim 21, wherein the additional information is data superimposed during a vertical blanking period of the video signal. 24. The video signal multiplexing method according to claim 21, wherein the additional information is character data superimposed during a vertical blanking period of the video signal. 25. A video recording medium for recording multiplexed data in which additional information related to the coded data is multiplexed on coded data obtained by coding the video information, wherein the coded data is obtained by encoding the video information. Video recording, characterized in that multiplexed data obtained by multiplexing additional information related to encoded data temporally earlier than the fixed unit of encoded data at a predetermined position of the unit of encoded data is recorded. Medium. 26. The video recording medium according to claim 25, wherein the coded data includes video information of MPEG1 or MPEG1.
Data obtained by encoding according to the PEG2 standard, wherein the predetermined unit is a 1 GOP or an n-times GOP, and the predetermined portion is a user data area of a GOP header. Video recording media. 27. The video recording medium according to claim 25, wherein the additional information is data superimposed during a vertical blanking period of a video signal. 28. The video recording medium according to claim 25, wherein said additional information is character data superimposed during a vertical blanking period of a video signal.