JPH10234017A - Video data transmission method, video data reproduction device and video/audio data reproduction device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow a demodulator side to correctly identify 1st coded video data for N frames adopting the interlace scanning or the progressive scanning system and video data of the noninterlace scanning system with a frame frequency in excess of a frame frequency of the 1st coded video data and to transmit the data where the both the data are in coexistence. SOLUTION: First coded video data and second coded video data are transmitted by the video data transmission system where a plurality of packets of video data and packets including program information are multiplexed and the multiplexed packets are transmitted, and information to identify whether coded video data of a program are the 1st coded video data or the 2nd coded video data is described in a packet including the program information and the resulting packet is transmitted. When the data are the 2nd coded video data, the video image reproduction is inhibited or frozen to a decoding means that reproduces only the 1st coded data and reproduction of data is instructed to a decoding means that reproduces the 2nd coded video data.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video data transmitting method, a video data reproducing apparatus, and a video / audio data reproducing apparatus for recognizing and reproducing data of different reproduction systems in a video demodulation system.

[0002]

2. Description of the Related Art In recent years, a video / audio compression system conforming to the standards of the Moving Picture Experts Group (MPEG) has been used, and ISO / IEC13818-1,
13818-2 and 13818-3 are known. In Japan, a CS digital broadcasting system and a CATV digital transmission system are defined in Japan by the Telecommunications Technology Council No. 74 report. ISO / IEC1 is used as a moving image encoding method.
In the main profile / main level (MP @ ML) described in 3818-2, a signal having a scanning method of a progressive scanning method (progressive) or an interlaced scanning method (interlace) of up to 30 frames / second is compression-encoded.

[0003] MPEG defines a method of compression-encoding a signal of a progressive scanning method or an interlaced scanning method. In this case, when coding a progressive scan signal, both intra coding and motion compensation are performed in frame units, but when coding an interlaced scan signal, both intra coding and motion compensation are performed depending on the amount of motion. There are cases where encoding is performed in units of fields and cases where encoding is performed in units of frames. Conventionally, interlaced scanning has been the mainstream in television broadcasting, but recently, attention has been paid to sequential scanning, which has little flickering on the screen and has good affinity with CG (computer graphics) and the like. .
In this case, the number of frames is, for example, 59.times.
ISO / IEC13818-2 becomes 94 frames / sec.
In the main profile H14 (MP @ H14)
It belongs to the following. In the future, it is expected that the demand for an image reproducing apparatus capable of reproducing both the interlaced scanning method and the progressive scanning method will increase.

FIG. 25 is a data structure diagram of a conventional video data transfer method. Video data of program numbers 1 and 3 and their service information NIT (network information table), PMT (program allocation table), and EIT (event information table) are multiplexed on a packet basis in a band centered on a reception frequency of 12.568 GHz. ing. The data structure of these packets and the standards for their multiplexing are in ISO / IEC 138
18-1, 13818-2, 13818-3 and the report of the Telecommunications Technology Council No. 74.
Therefore, here, only the particularly relevant portions will be described.

[0005] 21 is a program number 1 (channel 1)
Is a packet of video data. First packet identifier
By defining the PID as 0x91, it is possible to recognize that this packet is a packet of video data of program number 1. Reference numeral 22 denotes a packet of video data of program number 3 (channel 3). By defining the first packet identifier PID as 0x93, it is possible to recognize that this packet is a video data packet of program number 3. Reference numeral 23 denotes an NIT packet that defines a frequency at which the video data of the program numbers 1 and 3 is transmitted.

This example shows that the video data of program numbers 1 and 3 are multiplexed in the band of 12.568 GHz. 24 is a PMT packet. In this example, the packet identifier of the video data of program number 1 is
This indicates that the packet of 0x91 and the packet identifier of the video data of program number 3 are included in the packet of 0x93. 25 is an EIT packet. In this example, in program number 1, baseball a at 19: 00-20: 00, 20: 00-2100
Quiz, Western movies are broadcast after 21:00, and in program 3, baseball a from 19:00 to 20:00, soccer from 20:00 to 2100, 21:00
It indicates that baseball will be broadcast at -22: 00 and news will be broadcasted after 22:00.

FIG. 26 is a configuration diagram of a conventional video data device. In the figure, 1 is the first encoded video data, here 3
It is obtained by encoding an interlaced scanning signal or a sequential scanning signal of 0 frame or less according to ISO / IEC13818-2. 4 is a multiplexing means, and 5 is a modulation means for performing modulation such as QPSK. Reference numeral 11 denotes demodulation means for demodulating information including at least video data multiplexed and transmitted for program broadcasting, and includes video data of program number 1, video data of program number 3 shown in FIG. N
Demodulates IT, PMT and EIT. 12 is a separating means,
This is for separating information including video data demodulated by the demodulation means 11. A program selection unit 14 receives a program selection operation by an operator and instructs the demodulation unit 11 and the separation unit 12 on the selected program.

The program selecting means 14 includes a remote control for selecting a television program, a television channel button, a personal computer mouse, and the like, which are widely used. Reference numeral 61 denotes first video decoding means, which is interlaced video data separated by the separation unit 2, where MP ＠ M
The bit stream encoded by L is decoded and output as a video signal. A normal video data reproducing apparatus requires various other components (for example, a decoding unit for decoding audio data) in addition to the above.
The description is omitted because it is not the main object of the present invention.

The operation of the conventional device configured as described above will be described below. 1) When the program selection unit 14 receives a program selection operation by the operator, the program selection unit 14 demodulates the selected program.
Instruct 1

[0010] 2) The demodulation means 11 demodulates video data of the designated program. 3) The separating unit 12 separates the information demodulated by the demodulating unit into video data based on the program selecting unit 14. Specifically, if it is specified that the data of program number 1 is to be reproduced, the value of PMT is
Obtain the value of the packet identifier 0x91 of the video data of the program number 1, extract the packet of the packet identifier 0x91,
Tell to the next stage. If it is specified that the data of program number 3 is to be reproduced, the packet identifier 0x of the video data of program number 3 is obtained from the value of PMT.
Obtain the value of 93, extract the packet with the packet identifier 0x93, and transmit it to the subsequent stage.

4) The first video decoding means 61 decodes the video data separated by the separation means 12 and outputs it as a video signal.

However, a frame frequency exceeding MP @ ML, for example, 59.94 frames, and an image size of 704 × 4
Assuming that video data of 80 progressive scanning signals are multiplexed and transmitted, the number of frames is, for example, NTS
ISO / IE, 59.94 frames / sec, twice that of C
In C13818-2, the main profile H14
(MP ＠ H14), but the image size is small, so that the subset is positioned. If the first video decoding unit 61 attempts to decode, it cannot exceed the capability and cannot be correctly decoded. Is generated.

FIG. 27 is a diagram showing a program table displayed on a screen by an operator in a conventional video data reproducing apparatus for displaying a program table. The difference between the first encoded video data and the other video data, for example, is not known from the program table alone, so that the operator may erroneously select the program of the second encoded video data. If the operator selects the program program of the second encoded video data, the video data device of the related art cannot reproduce correctly, so that a distorted video is output and only the operator is recognized as malfunctioning.

[0014]

In this video data reproducing apparatus, as described in the prior art, the first coded video decoding means sequentially increases the frame frequency exceeding the frame frequency of the first coded video data. When trying to decode a scanning signal, decoding cannot be performed correctly and an inaccurate video signal is output. Therefore, misunderstanding or inconvenience in use is given to the operator, and contents unintended by the program provider are provided to the user.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is intended that the first coded video data and the first coded video data of the N-frame (N: positive integer) interlaced scanning or progressive scanning method be used. The video data of the progressive scanning method having a frame frequency exceeding the frame frequency of the coded video data can be transmitted so as to be correctly identified on the demodulation side, and both can coexist to improve the degree of freedom of the configuration of the program to be transmitted. It is an object to provide a video data transmission method.

Further, the present invention provides a first video data reproducing apparatus capable of reproducing only the first encoded video data on the transmitting side without causing any trouble when the second encoded video data is demodulated. It is an object of the present invention to provide a reproducing apparatus for reproducing first and second encoded video data, which can correctly reproduce the first and second encoded video data.

[0017]

In order to solve the above problems, the present invention (claim 1) divides coded video data of a plurality of programs into packet units, In a video data transmission method for multiplexing and transmitting packets including information on a program, a first coded video data obtained by coding an interlaced scanning signal or a sequential scanning signal of N frames / second (N: positive integer) and M frames / The second coded video data obtained by coding the sequential scanning signal of seconds (M> N) is transmitted, and the coded video data of the program is included in the packet containing the information on the program. Or the second encoded video data is described and transmitted.

Further, the present invention (claim 2) is based on claim 1.
In the invention described above, the packet including the information on the program is a program assignment table indicating which packet the program is transmitted.

Further, the present invention (claim 3) is based on claim 1.
In the invention described above, the packet including information on the program is an event information table indicating the contents of the program.

Further, the present invention (claim 4) is based on claim 1.
In the described invention, the packet including the information on the program is a network information table indicating on which channel the program is transmitted.

The invention of the present application (Claim 5) is based on Claim 2.
In the described invention, information for identifying whether the video data of a program is the first coded video data or the second coded video data is stored in a program assignment table in a program information descriptor system. This is described in the system management identifier, which is one of the management descriptors.

Further, the present invention (claim 6) is based on claim 2
In the video data transmission method described above, information for identifying whether the video data of the program is the first coded video data or the second coded video data is stored in a program assignment table as a descriptor of program information. Is described in the stream identifier.

Further, the present invention (claim 7) is based on claim 3
In the described invention, information identifying whether encoded video data of a program is first encoded video data or second encoded video data indicates an attribute of the video data in an event information table. It is described in the component identifier.

Further, the present invention (claim 8) is based on claim 4
In the invention described in the above, information for identifying whether the video data of a program is the first coded video data or the second coded video data is stored in a network information table in the network information table. It is described in the network identifier to be identified.

According to the invention of the present application (claim 9), in the video data reproducing apparatus, an interlaced scanning signal or a sequential scanning signal of N frames / second (N: positive integer) is encoded.
Coded video data and second coded video data obtained by coding a progressive scanning signal of M frames / second (M> N is an integer), and whether the coded video data is the first coded video data Demodulating means for demodulating information including identification data for identifying whether the data is the second encoded video data; and encoding video data selected by an operator from information input from the demodulation means and the identification data. Separating means for extracting, program selection means for receiving the selection of the coded video data by the operator, and instructing the separating means on the coded video data to be extracted, and identifying the identification data separated and extracted by the separating means. Identification information storage means for storing; first video decoding means for decoding the first encoded video data separated and extracted by the separation means and outputting the decoded video data as a video signal; The decoding instruction means for instructing the first video decoding means to perform decoding in accordance with the information in the information storage means and the first video decoding means if the coded video data selected by the operator is the second coded video data. On the other hand, a first reproduction prohibition unit for prohibiting or freezing the video reproduction is provided.

According to a tenth aspect of the present invention, in the video / audio data reproducing apparatus, the first encoded video data obtained by encoding an interlaced scanning signal or a sequential scanning signal of N frames / second (N: positive integer). Coded video data obtained by coding progressive scanning signals of M frames / sec (M> N), first coded audio data accompanying the first coded video data, and second code Second attached to the coded video data
And whether the encoded video data is the first encoded video data or the second encoded video data and the encoded audio data is the first encoded audio data. And demodulation means for demodulating information including identification data identifying whether the data is the second coded audio data, and coded video data selected by an operator from information input from the demodulation means and the identification data. Separating means for extracting data and the selected video data by the operator, and a program selecting means for instructing the separating means on the encoded video data to be extracted; and Identification information storage means for storing identification data, and first video for decoding the first encoded video data separated and extracted by the separation means and outputting it as a video signal Signal means, audio decoding means for decoding the coded audio data separated and extracted by the separation means and outputting as an audio signal, and first video decoding means and audio decoding means according to the information in the identification information storage means. Decoding instruction means for instructing decoding by the operator, and if the encoded video data selected by the operator is the second encoded video data, inhibits or freezes the video reproduction to the first video decoding means, A second reproduction inhibiting means for inhibiting the encoded audio reproducing means from reproducing the audio is provided.

According to the present invention (claim 11), in the video data reproducing apparatus, N frames / sec (N: positive integer)
The first encoded video data obtained by encoding the interlaced scanning signal or the progressive scanning signal, the second encoded video data obtained by encoding the M frame / second (M> N integer) progressive scanning signal, Demodulating means for demodulating information including identification data for identifying whether the encoded video data is the first encoded video data or the second encoded video data; Separating means for extracting the coded video data selected by the operator and the identification data; program selecting means for receiving the selection of the coded video data by the operator and instructing the separating means on the coded video data to be extracted Identification information storage means for storing the identification data separated and extracted by the separation means; and first encoded video data separated or extracted by the separation means or A second video decoding unit that decodes the second encoded video data and outputs the decoded video data as a video signal; a second decoding instruction unit that instructs the second video decoding unit to perform reproduction in accordance with the information in the identification information storage unit; It is provided with.

Further, the present invention (claim 12) provides a method in which the first encoded video data obtained by encoding an interlaced scanning signal or a sequential scanning signal of N frames / second (N: positive integer) and M frames / second (M A plurality of program data including both video data of the second coded video data obtained by coding the progressive scanning signals of (> N integer), an event information table indicating the content of the video data of each program at each time, Video data transmission multiplexed and transmitted together with information for identifying whether the encoded video data of each program included in the event information table is the first encoded video data or the second encoded video data. In the video data device for selecting and reproducing any one of the plurality of programs transmitted by the method, the content of the video data for each program at each time based on the event information table and the identification information table A program table that creates a program table indicating whether the coded video data is the first coded video data or the second coded video data, and outputs this as visible information on a display screen of the video display means It is provided with creating means.

Further, according to the present invention (claim 13), in the video data reproducing apparatus according to claim 11, the program table output means outputs a program including only the second encoded video data as a program table. Things.

According to the present invention (claim 14), in the video data reproducing apparatus according to claim 11, the program table output means outputs a program including only the first encoded video data as a program table. Things.

Further, according to the present invention (claim 15), in the video data transmission method according to claims 1 to 7, the maximum frame frequency of the first encoded video data is set to 30 frames / frame.
Seconds.

According to the present invention (claim 16), in the video data reproducing apparatus according to claim 8, the maximum frame frequency of the first encoded video data is set to 3
0 frames / sec.

According to the present invention (claim 17), in the video / audio data reproducing apparatus according to claim 9, the maximum frame frequency of the first encoded video data is set to 30 frames / second.

According to the present invention (claim 18), in the video data transmission method according to claims 1 to 7, the first encoded video data has a maximum number of horizontal pixels 720, a maximum number of vertical scanning lines 576, Video data obtained by coding an interlaced scan or progressive scan signal having a maximum frame frequency of 30 frames / second, and the second coded video data have a maximum horizontal pixel number of 72.
0, maximum number of vertical scanning lines 576 lines, maximum frame frequency 6
This is video data obtained by encoding a progressive scanning signal of 0 frames / sec.

According to a ninth aspect of the present invention, in the video data reproducing apparatus of the ninth and eleventh aspects, the first coded video data has a maximum horizontal pixel number of 720,
Video data obtained by coding an interlaced scan or sequential scan signal having a maximum number of vertical scanning lines of 576 and a maximum frame frequency of 30 frames / second, and the second coded video data have a maximum number of horizontal pixels of 720 and a maximum number of vertical scanning lines of 576. In this case, the maximum frame frequency is 60 frames / sec.

According to the present invention (claim 20), in the video / audio data reproducing apparatus according to claim 10, the first encoded video data has a maximum number of horizontal pixels 720, a maximum number of vertical scanning lines 576, and a maximum frame number. The video data obtained by encoding the interlaced scanning or the progressive scanning signal having a frequency of 30 frames / second, and the second encoded video data have a maximum number of horizontal pixels of 72.
0, maximum number of vertical scanning lines 576 lines, maximum frame frequency 6
It is 0 frames / sec.

[0037]

Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1) FIG. 1 is a configuration diagram showing a video data transmission method according to Embodiment 1 of the present invention. In the figure, the same reference numerals as those in FIG. 26 denote the same or corresponding parts. The difference from the conventional example shown in FIG.
Not only the first encoded video data 1 but also the second encoded video data 2 and the identification information 3 for identifying the encoded video data to be transmitted are multiplexed and transmitted. A second video decoding unit 13 for decoding the encoded video data 1 and the second encoded video data 2 and identification information 3 indicating whether the first encoded video data 1 or the second encoded video data 2 is stored. Using the identification information storage means 15
The decoding instruction means 16 for issuing a reproduction instruction to the second video decoding means 13 based on the information from the identification information storage means 15 is used.

The second video decoding means 3 has the ability to decode not only the second encoded video data 2 but also the first encoded video data 1. Here, the first encoded video data 1 is, for example, video data of the current system, and
Video data obtained by encoding a C or 24 frame / second movie film according to the main profile main level of the MPEG encoding method corresponds to the movie data. NTSC has an image size of 72
0x480, an interlaced scan signal with a frame rate of 29.97 frames / sec, while a movie has an image size of 720x
480, a progressive scanning signal of 24 frames / sec. These interlaced scanning signals and progressive scanning signals are M
In the PEG encoding method, encoding is performed in a field structure or a frame structure.

That is, even an interlaced scanning signal having a frame rate of 29.97 frames / sec is not always encoded in the field structure, and may be encoded in the frame structure. The second encoded video data 2 is, for example, NTSC
, A progressive scanning signal having an image size of 720 × 480 and a number of frames of 59.94 frames / second. Video data obtained by encoding this in a frame structure according to MP / H14 of ISO / IEC13818-2 corresponds to the image size. Due to restrictions, it becomes a subset and requires another identification means. Therefore, identification information of whether the data is the first encoded video data 1 or the second encoded video data 2 is required, and this information is not enough to distinguish between an interlaced scanning signal and a progressive scanning signal. For the purpose of discriminating between first encoded video data 1 which is generally an interlaced scanning signal or a progressive scanning signal of N frames or less and second encoded video data 2 which is a progressive scanning signal of M frames or more. Used in

FIG. 2 is a diagram showing a configuration of transmission data in the video data transmission method according to the first embodiment. FIG.
The difference from the data structure of the transmission data in the conventional video data transmission method shown in FIG. 5 is that the PMT (program allocation table) 31
The system management identifier can be described in the
The point is that a code for determining whether the data is the first encoded video data 1 or the second encoded video data 2 is included therein.

FIG. 3 is a diagram showing the data structure of the PMT (program allocation table) 31. As shown in the figure, the system management identifier is included in the descriptor of the program information in the PMT, and is composed of 16 bits. These 16 bits are
The upper two bits are for system classification, the middle six bits are for discriminating a technical level at the notification level, and the lower eight bits are for discriminating a technical standard of a private standard that can be determined by a private company. Top 2
The system classification of bits is used to indicate whether information based on lower bits is information provided to all users, business information, or the like.

FIG. 4 shows an example of code assignment of the lower 8 bits of the system management identifier. Here, the code value of the first encoded video data 1 is 0x01 and the code value of the second encoded video data 2 is 0x02, but the first encoded video information 1 and the second encoded video information 2 If you know the difference, you can use another code.

FIG. 5 shows an example of code assignment of the middle 6 bits of the system management identifier. Here, the code value of the first encoded video data 1 is set to 0x01 and the code value of the second encoded video data is set to 0x02, but the first encoded video data 1 and the second encoded video data are If you know the difference, you can use another code.

The operation of the video data transmitting method and the video data reproducing apparatus according to the first embodiment configured as described above will be described below.

FIG. 6 is a flowchart showing a procedure on the transmitting side and a procedure on the receiving side (video data reproducing apparatus) in the video data transmitting method according to the first embodiment.

Here, it is assumed that the programs are limited to two programs, Program 1 and Program 3, and these two programs are multiplexed in one frequency band. Further, the program with the program number 1 is the first coded video data 1 and the program name is “quiz”, and the program with the program number 3 is the second coded video data 2 and the program name is “soccer”. ". The following procedure is performed on the transmitting side.

1) A packet of video data of program number 1 is created (step 1). A packet identifier PID of 0x91 is added to the head of the packet, followed by adding video data (quiz) to create a packet of a fixed size. Here, the PID is set to 0x91, but any value can be used as long as it can be distinguished from other packets.

2) Create a packet of video data of program number 3 (step 2). A packet identifier PID of 0x93 is added to the beginning of the packet, and then video data (soccer) is added to create a packet of a fixed size. Here, the PID is set to 0x93, but any value can be used as long as it can be distinguished from other packets.

3) Create a PMT packet (step 3). Substitute 0x02 as the packet identifier PID at the beginning of the packet, and assign 0X91 to the PID of the video data of program number 1.
, The lower 8 bits of 0x01 are described as identification information of the first encoded video data 1 as the system management identifier, 0X93 is substituted for the PID of the video data of the program number 3, and the second as the system management identifier. 0x02 is described in the lower 8 bits as identification information of the encoded data 2 of. still,
Although the lower 8 bits of the system management identifier are used, the middle 6 bits shown in FIG. 5 may be used as identification information. Although the packet identifier PID of the PMT packet is set to 0x02, the PID is defined in a PAT (program association table) in the MPEG standard.

4) The data is multiplexed and transmitted (step 4).
The above three types of packets are sized, multiplexed and transmitted. Usually adds error correction, QPSK modulation or QA
Transmission is performed by performing M modulation or the like, but is omitted because it is not the focus of the present invention.

The following procedure is performed on the receiving side. 5) The demodulation means 11 demodulates the multiplexed data from the transmission side (step 5).

6) The separating means 12 separates and extracts the PMT packet using the packet identifier 0x02 as a key (step 6).

7) By decoding the PMT data, (program number 1: the PID of the video data is 0x91 and the first encoded video data 1; program number 3: the PID of the video data is 0x93 and the second Information on encoded video data 2)
Is obtained and stored in the identification information storage means 15 (step 7).

8) Program selection from the operator is received through a remote controller, a channel on a monitor, or the like (step 8).

9) When the operator selects the program number 1, the PID of the video data to be reproduced is 0x91 and the first encoded video data 1 based on the information in the identification information storage means 15. recognize. Program tuning means 14
Instructs the separating means 12 to separate the packet having the PID of 0x91, and the decoding command means 16 instructs the second video decoding means 13 to decode the first encoded video data 1 (step 9). Thus, the NTSC signal, which is, for example, an interlaced scanning signal of 29.97 frames / sec, is displayed on the video display unit 17. In the case of a movie signal which is a 24 frame / sec progressive scanning signal, 59.94 fields / sec (29.97 frames / sec) are obtained by pull-down.
Are displayed on the video display means 17 after being converted into interlaced scanning signals.

10) If the operator selects the program number 3, the PID of the video data is 0x93 and it is recognized that the video data is the second encoded video data, based on the information in the identification information storage means 15. The program selection means 14 instructs the separation means 12 to separate the packet having the PID of 0x93, and the decoding instruction means 16 outputs the second video decoding means 1
3 is instructed to decode the second encoded video data 2 (step 10). Thereby, the video display means 17
, A progressive scanning signal of, for example, 59.97 frames / second is displayed.

FIG. 7 is a diagram showing another data structure of the PMT (program allocation table) 31. The difference from the embodiment shown in the figure is an example where the stream identifier is described in the descriptor of the program information in the PMT. In this stream identifier, an identifier indicating the type of encoded data (stream) of video or audio is described. The PID of the corresponding stream is described as an elementary PID. Thereby, the first transmitted separately for each PID
It is possible to distinguish and describe whether the encoded video data is the second encoded video data. As illustrated, the packet identifier (PID) of the elementary stream is described together with the stream identifier. Although the code value of the first encoded video data is 0x80 and the code value of the second encoded video data is 0x81, other codes may be used.

FIG. 8 is a flowchart showing the procedure on the transmitting side and the procedure on the receiving side (digital data receiving apparatus) in the data configuration shown in FIG. The difference from FIG. 6 is that, on the transmitting side, in step 3 for creating a PMT packet, 0X91 is substituted for the PID of the program number 1 and the stream identifier of the first encoded video data is
0x80 is added, and 0x81 is added as a stream identifier of the second encoded video data. Another point is that the receiving end decodes the stream identifier of the PMT in step 7. In this case, since an elementary identifier (elementary PID) can be recorded after the stream identifier, there is an advantage that correspondence with the elementary stream can be easily obtained.

FIG. 9 shows an example described in a private section of 0x05. In this case, there is an advantage that arbitrariness increases.

FIG. 10 shows an example in which the PES packet contains the second coded video data of 0x06.

FIG. 11 shows an example in which the information is described in a reserved area of 0x0F. As described above, in the video data transmission method according to the first embodiment, video data of a plurality of programs is divided into packet units, and a plurality of packets of the video data and a packet containing information on the program are multiplexed and transmitted. In the video data transmission method described above, the video data of the plurality of programs is, for example, a 59.94 fields / sec (29.97 frames / sec) NTSC interlaced scan signal or a 24 frame / sec movie progressive scan signal encoded as a first
Coded video data 1 and, for example, 59.94 frames /
The second encoded video data 2 obtained by encoding the second sequential scanning signal is transmitted, and the video data of the program is stored in the program allocation table 24 indicating which packet the program is transmitted. Since information for distinguishing between the data 1 and the second coded video data 2 is transmitted, both the first coded video data 1 and the second coded video data 2 are correctly reproduced on the receiving side. It can be transmitted as much as possible, and the diversity of programs to be transmitted can be increased.

In the video data reproducing apparatus 18 according to the first embodiment, the first coded video data 1, the second coded video data 2, and the video data are the first coded video data 1. And demodulation means 1 for demodulating information including identification information 3 for identifying whether the data is the second coded video data 2.
1, separating means 12 for extracting the video data selected by the operator from the information input from the demodulating means 11 and the identification information 3, and accepting the selection of the video data by the operator and extracting it to the separating means 12. Program selecting means 14 for specifying video data to be output, identification information storage means 15 for storing the identification information 3 separated and extracted by the separation means 12, and first encoding separated and extracted by the separation means 12. The second video decoding unit 13 that decodes the video data 1 or the second encoded video data 2 and outputs it as a video signal and the video data selected by the operator based on the information in the identification information storage unit 15 are determined. And outputs a decoding instruction to the second video decoding means 13, so that any one of the first coded video data 1 and the second coded video data 2 It is possible to realize the video data reproducing apparatus which can display reproduces the image data is also correct.

(Embodiment 2) FIG. 12 is a diagram showing a data structure of transmission data in a video data transmission method according to Embodiment 2 of the present invention. The difference from the conventional example shown in FIG. 25 is that a component type indicating a component of a program can be described in the EIT event information table 32, and whether the first encoded video data 1 2 encoded video data 2
This is the point that contains a code that can be used to determine whether

FIG. 13 is an EIT event information table showing a program assignment indicating the location of the component type. The component type is included in the component identifier, which is one descriptor in the program allocation table, and is composed of 8 bits. FIG. 14 is an example of component type code allocation in the case of the second encoded video data.

FIG. 15 is an example of component type code allocation in the case of the first encoded video data.

FIGS. 14 and 15 show an example of code assignment. If the difference between the first encoded video data 1 and the second encoded video data 2 is known, another code is assigned. It can be code.

The operation of the video data transmitting method and the video data reproducing apparatus according to the second embodiment will be described below.

1) First, 0x12 is substituted as the head PID of the EIT packet. 2) Then, the following is stored as information of the program number 1.

Start time: 19:00 Program name: baseball a Component type: 0x21 (code indicating second encoded video data 2) Start time: 20:00 Program name: quiz Component type: 0x01 (first code) Start time: 21:00 Program name: Western component type: 0x22 (code indicating second coded video data 2) 3) The following is stored as program number 3 information.

Start time: 19:00 Program name: baseball a Component type: 0x01 (code indicating first encoded video data 1) Start time: 20:00 Program name: soccer Component type: 0x22 (second code Start time: 21:00 Program name: Baseball b Component type: 0x22 (Code indicating second encoded video data 2) Start time: 22:00 Program name: News Component type: 0x21 (Code indicating the second encoded video data 2) 4) The EIT is multiplexed with the video data of the program number 1, the video data of the program number 3, and the PMT packet describing the PID of the video data of each program number. Send.

The procedure in which the video data reproducing apparatus receives the transmission data shown in FIG. 12 and performs the reproducing operation is as follows. The multiplexed data transmitted from the transmitting side is demodulated by the demodulating means 11, the PMT packet is separated by the separating means 12 using the packet identifier PID0x02 as a key, and the EMT is separated using the packet identifier PID0x12 as a key.
IT packets are separated and extracted. Then, by decoding the PMT data, "the PID of the video data of the program number 1 is 0x91" and "the PID of the video data of the program number 3 is 0x93", and further, the EIT data is decoded. For example, if the current time is between 20:00 and 21:00, "Program number 1
The information of the first encoded video data 1 is obtained for the video data of No. 1 and the information of the second encoded video data 2 ″ is obtained for the video data of the program number 3, and this information is stored in the identification information storage means 15.

When the program selection from the operator is received and the operator selects program number 1, the PID of the video data to be reproduced is 0x91 based on the information in the identification information storage means 15, It recognizes that the video data is the first encoded video data 1. The program tuning means 14 has a PID for the separating means 12.
An instruction is given to separate the packet of 0x91, and the decoding instruction means 16 instructs the second video decoding means 13 to decode the first encoded video data 1. On the other hand, when the operator selects the program number 3, it is determined that the PID of the video data is 0x93 and the video data is the second encoded video data 2 based on the information in the identification information storage unit 15. recognize. The program selection means 14 instructs the separation means 12 to separate the packet having the PID of 0x93, and the decoding command means 16 instructs the second video decoding means 13 to output the second encoded video data 2. Instruct decryption.

As described above, in the video data transmission method according to the second embodiment, the video data of a plurality of programs is divided into packet units, and a plurality of packets of the video data and a packet containing information related to the program are multiplexed. In the video data transmission method of transmitting a plurality of programs, for example, a current 59.94 fields / sec (29.97 frames / sec) NTSC interlaced scanning signal or a 24 frame / sec movie progressive scanning signal is encoded as the video data of the plurality of programs. The first
Coded video data 1 and, for example, 59.94 frames /
The second encoded video data 2 obtained by encoding the second sequential scanning signal is transmitted, and the video data of the program is included in the first encoded video data 1 in the event information table 32 indicating the content of the video data of the program. Since information for identifying whether the data is present or the second coded video data 2 is described and transmitted, the video data of both the first coded video data 1 and the second coded video data 2 are described. Can be transmitted so that it can be correctly reproduced on the receiving side, and the degree of freedom in the configuration of the program to be transmitted can be improved.

(Embodiment 3) FIG. 16 is a diagram showing a data structure of transmission data in a video data transmission method according to Embodiment 3 of the present invention. The difference from the transmission data of the conventional example shown in FIG. 25 is that a network ID for identifying a network for identifying a network can be described in the NIT network information table 41, and the first encoding The point is that a code is included which can determine whether the data is the video data 1 or the second encoded video data 2.

FIG. 17 is a data configuration diagram of a network information table indicating the location of the network ID.

FIG. 18 shows an example of code assignment of a network ID. Here, the first encoded video data is set to 0x0001,
Is set to 0x0002, but another code may be used if the difference between the first encoded video data and the second encoded video data is known. Next, the operation of the video data transmitting method and the video data reproducing device according to the third embodiment of the present embodiment will be described. On the transmitting side, data is transmitted according to the following procedure. First, 0x10 is substituted as the head PID of the NIT packet. Then, the following data is stored in the NIT as information of the program number 1.

Network ID: 0x0002 (code indicating second coded video data 2) Program number: 1 Reception frequency: 12.568 GHz
Store in IT.

Network ID: 0x0001 (code indicating first encoded video data 1) Program number: 3 Reception frequency: 12.568 GHz Then, this NIT is stored in the video data of program number 1,
The video data of the program number 3 and the PMT packet describing the PID of the video data of each program number are multiplexed and transmitted.

The procedure for receiving the transmission data shown in FIG. 16 and performing a reproducing operation by the video data reproducing apparatus is as follows. The multiplexed data transmitted from the transmitting side is demodulated by the demodulation means 11, the demultiplexing means 12 separates the PMT packet using the packet identifier PID0x02 as a key, and separates the NIT packet using the packet identifier PID0x10 as a key. Extract. And PM
By decoding the data of T, "program number 1
That the PID of the video data of the program number 3 is 0x91 and that the PID of the video data of the program number 3 is 0x93.
Further, by decoding the NIT data, "the video data of the program number 1 becomes the second encoded video data 2,
For the video data of program number 3, information of the first encoded video data 1 "is obtained, and this information is stored in the identification information storage means 1.
5 is stored.

When the program selection from the operator is received and the operator selects the program number 1, the PID of the video data to be reproduced is 0x91 based on the information in the identification information storage means 15, It recognizes that the video data is the first encoded video data 1. The program tuning means 14 has a PID for the separating means 12.
An instruction to separate the packet of 0x91 is given, and the decoding instruction means 16 instructs the second video decoding means 13 to decode the first encoded video data 2.

On the other hand, when the operator selects the program number 3, the PID of the video data is 0x93 based on the information in the identification information storage means 15, and the video data is the second encoded video data 2. Recognize that there is. The program selecting means 14 has a PID of 0x93 for the separating means 12.
The decoding instruction means 16 instructs the second video decoding means 13 to decode the second encoded video data 2.

As described above, in the video data transmission method according to the third embodiment, the video data of a plurality of programs is divided into packet units, and a plurality of packets of the video data and a packet containing information related to the program are multiplexed. In the video data transmission method of transmitting a plurality of programs, for example, 59.94 fields / sec (2
9.97 frames / sec) NTSC interlaced scanning signal or 2
First coded video data 1 obtained by coding a 4 frame / second movie progressive scan signal, and second coded video data 2 obtained by coding a 59.94 frame / sec progressive scan signal, for example, are transmitted and transmitted. In the network information table 41 indicating which channel the program is transmitted on, information for identifying whether the video data of the program is the first encoded video data 1 or the second encoded video data 2 is stored. Since it is described and transmitted, it is possible to transmit both the first encoded video data 1 and the second encoded video data 2 so that the video data can be correctly reproduced on the receiving side.
The degree of freedom of the program to be transmitted can be improved.

(Embodiment 4) FIG. 19 is a diagram showing a configuration of a video data reproducing apparatus according to Embodiment 4 of the present invention.

In the figure, the same reference numerals as those in FIG. 1 denote the same or corresponding parts. In the video data reproducing apparatus according to the fourth embodiment, data transmitted from the transmission side has the same configuration as that shown in FIG. 12 transmitted in the second embodiment.

In the fourth embodiment, on the transmitting side 6, the first encoded video data 1, the second encoded video data 2, the program table information 51 and the identification information 3 of each program are multiplexed by the multiplexing means 4. , And modulated by the modulating means 5 and transmitted. The program table information 51 and the identification information 3 of each program are EIT
(Event information table) is described in the packet.

The video data reproducing apparatus according to the fourth embodiment is different from the video data reproducing apparatus according to the second embodiment in that it has a program table storage means 52 for storing program table information from an EIT event information table. A program table creating means 53 for processing the information from 52 into visible information;
3 and a signal synthesizing means 54 for synthesizing the output signal of the program guide creating means 53.

FIG. 19 is a diagram showing a video data reproducing apparatus according to the fourth embodiment. It is assumed that the transmission data conforms to the second embodiment.

FIG. 20 is a flowchart for explaining the operation of the fifth embodiment. FIG. 21 is a diagram showing a program guide output on the display screen of the video data reproducing apparatus according to the present embodiment. As shown in the figure, the program of the first encoded video data 1 and the program of the second encoded video data 2 are output as separate tables.

The operation of the fourth embodiment will be described below. On the transmitting side, 1) 0x12 is substituted as the leading PID of the EIT packet (step 1).

2) For example, the following is stored as information of the program number 1 (step 2). Start time: 19:00 Program name: baseball a Component type: 0x21 (code indicating second encoded video information) Start time: 20:00 Program name: Quiz Component type: 0x01 (first encoded video information Start time: 21:00 Program name: Western movie Component type: 0x21 (code indicating second coded video information) 3) The following is stored as information of program number 3 (step 3).

Start time: 19:00 Program name: baseball a Component type: 0x01 (code indicating first encoded video information) Start time: 20:00 Program name: soccer Component type: 0x21 (second encoding (Code indicating video information) Start time: 21:00 Program name: Baseball b Component type: 0x21 (code indicating second encoded video information) Start time: 22:00 Program name: News Component type: 0x21 (Second 4) The EIT described above is multiplexed with the video data of program number 1, the video data of program number 3, and the PMT packet describing the PID of the video data of each program number and transmitted. 4).

The procedure on the receiving side (video data reproducing device) 18 is as follows. 5) Demodulate the multiplexed information in the demodulation means 11
(Step 5).

6) The separating means 12 separates and extracts the packet of the EIT (event information table) using the packet identifier PID0x12 as a key (step 6).

7) From the EIT, the start times of the program numbers 1 and 3, the program name, and whether the encoded video data is the first encoded video data 1 or the second encoded video data 2 And the program table storage means 52
(Step 7).

8) In the program table creation means 53, the second
If the program is encoded video data 2, the program name and start time are registered in the program table of the second encoded video data 2, and if the program is the first encoded video data 1, the first encoded video data is registered. The program name and start time are registered in the program table of No. 1 and sent to the signal synthesizing means 54, and the video display means 17 has the first coded video data 1 and the second coded video data 2 in the format shown in FIG. Are displayed separately (steps 8, 9, 10).
If the program information is additionally provided, the above step 8 is performed.
Steps 10 to 10 are repeated (step 11).

9) The process proceeds to another process (step 12).
The first encoded video data 1 or the second encoded video data 2 is decoded by the method described in the first and second embodiments. That is, when the operator selects the program number 1, the PID of the video data to be reproduced is determined based on the information stored in the identification information storage unit 6 based on the contents of PMT and EIT.
Is 0x91 and is the first encoded video data 1 or the second
Is recognized as the encoded video data 2. The program selecting means 14 instructs the separating means 12 to separate the packet whose PID is 0x91,
6 instructs the second video decoding means 13 to perform decoding.

On the other hand, when the operator selects the program number 3, the PID of the video data to be reproduced is 0x93 based on the information stored in the identification information storage means 15 from the contents of PMT and EIT, It recognizes whether it is the first encoded video data 1 or the second encoded video data 2. The program selecting means 14 instructs the separating means 12 to separate the packet having the PID of 0x93,
The decoding instruction means 16 instructs the second video decoding means 13 to perform decoding. Then, the video signal decoded by the second video decoding means 13 is applied to the video display means 8 via the signal synthesizing means 54 and displayed on the screen.

The output program table is a single program table as shown in FIG. 22, and each program has the first coded video data 1 or the second coded video data 2 May be added.

As described above, in the video data reproducing apparatus according to the fourth embodiment, for example, the current 59.94 fields / second (29.97 frames / second) NTSC interlaced scanning signal and the 24 frames / second movie sequential scanning signal are output. A plurality of pieces of video data including both the encoded first encoded video data 1 and the second encoded video data 2 obtained by encoding a progressive scanning signal of, for example, 59.94 frames / sec. An event information table indicating the contents of the video data by time and whether the video data of each program included in the event information table is the first encoded video data 1 or the second encoded video data 2 In the video data reproducing apparatus for selecting and reproducing any one of the plurality of programs transmitted by the video data transmitting method of multiplexing and transmitting together with information for identifying Based on the event information table and the identification information, a program table indicating the content of the video data at each time of each program and indicating whether the video data is the first encoded video data or the second encoded video data. Since the program is provided with a program output means for creating and outputting this as visible information on the display screen, the program selected by the operator is the first encoded video data 1 or the second encoded video data 2
Can be easily confirmed, and incorrect selection can be prevented.

(Embodiment 5) FIG. 23 shows Embodiment 5 of the present invention.
Is a diagram showing a video data reproducing device according to the present invention. The difference from the first embodiment of the present invention shown in FIG. 1 is that a first video decoding unit 61 is provided instead of the second video decoding unit 13,
The reproduction prohibiting means 62 of FIG. It is assumed that the transmission data conforms to the first embodiment.

1) The demodulation means 11 demodulates the multiplexed data from the transmitting side. 2) The separating means 12 uses the packet identifier 0x02 as a key
The PMT packet is separated and extracted.

3) By decoding the PMT data, (program number 1: the PID of the video data is 0x91 and the first encoded video data 1; program number 3: the PID of the video data is 0x93 and the second The information of the coded video data 2 is obtained and stored in the identification information storage unit 15.

4) Program selection from the operator is accepted. 5) When the operator selects the program number 1, the PID of the video data to be reproduced is 0x91 and the first encoded video data 1 is recognized based on the information in the identification information storage unit 15. The program tuning means 14 instructs the separating means 12 to separate the packet having the PID of 0x91, and the decoding instruction means 16 instructs the first video decoding means 61 to decode the first encoded video data 1. Give instructions. As a result, the video display means 17 displays the NTSC signal, which is an interlaced scanning signal. In the case of a movie signal which is a 24 Hz progressive scanning signal, it is converted into a 59.94 field (29.97 frame) interlaced scanning signal by pull-down and then displayed on the video display means 17.

6) If the operator sets program number 3
Is selected, the PID of the video data is 0x93, and it is recognized that the video data is the second encoded video data 2 based on the information in the identification information storage unit 15. The first reproduction prohibiting means 62 instructs the first video decoding means 61 to prohibit the decoding of the second encoded video data. As a result, the second encoded video data is not displayed on the video display means 17.

As described above, the video data reproducing apparatus according to the fifth embodiment uses the first encoded video data 1 and the second
Demodulating means 11 for demodulating information including encoded video data 2 and identification information 3 for identifying whether the video data is the first encoded video data 1 or the second encoded video data 2. A separating unit 12 for extracting the video data selected by the operator from the information input from the demodulating unit 11 and the identification information, and accepting the selection of the video data by the operator, and Program selecting means 14 for instructing data, separating means 1
2, an identification information storage unit 15 for storing the identification information separated and extracted by the first unit 2, and a first video which decodes the first encoded video data 1 separated and extracted by the separation unit 12 and outputs the decoded video data as a video signal A reproduction prohibition unit that outputs a command to prohibit reproduction to the first video decoding unit 61 in the case of the second encoded video data 2 based on the identification information 3 in the decoding unit 61 and the identification information storage unit 15. 62, the video data selected by the operator is determined based on the information in the identification information storage means 15, and if it is the first coded video data 1, decoding is instructed and the second coded video data 2 , The playback is prohibited, so that the first encoded video data 1
Can be realized, and a video data reproducing apparatus that prevents malfunction due to the second encoded video data 2 can be realized.

In the above embodiment, only the program of the first coded video data may be displayed on the screen as a program table as in the fourth embodiment of the present invention.
In this case, incorrect program selection can be prevented.

(Embodiment 6) FIG. 24 shows Embodiment 6 of the present invention.
Is a diagram showing a video data reproducing device according to the present invention. The difference from Embodiment 5 of the present invention shown in FIG. 23 is that transmitting side has first coded voice data 71 and second coded voice data 72, and voice decoding is performed on the receiving side. Means 73, second reproduction prohibition means 74, and audio reproduction means 75.

1) The demodulation means 11 demodulates the multiplexed data from the transmitting side. 2) The separating means 12 uses the packet identifier 0x02 as a key
The PMT packet is separated and extracted.

3) By decoding the PMT data, (program number 1: video data PID is 0x91, first coded video data 1; audio data PID is 0x92, first coded audio data; Program number 3: The PID of the video data is 0x93, the second coded video data 2 and the PID of the audio data are 0x94, and the information of the second coded audio data is obtained and stored in the identification information storage unit 15. .

4) Program selection from the operator is accepted. 5) When the operator selects the program number 1, the PID of the video data to be reproduced is 0x91 and the first encoded video data 1 based on the information in the identification information storage means 15,
The PID of the audio data is 0x92 and the first encoded audio data 71
Recognize that The program selecting means 14 instructs the separating means 2 to separate the packet having the PID of 0x91, and the decoding instruction means 16 outputs the first video decoding means 61.
Instruct the first coded video data 1 to decode the first coded audio data 71 to the first audio decoding means. As a result, the NTSC signal which is an interlaced scanning signal is displayed on the video display means 17, and the audio is reproduced on the audio reproducing means 75. In the case of a movie signal which is a 24 Hz progressive scanning signal, it is converted into a 59.94 field (29.97 frame) interlaced scanning signal by pull-down and then displayed on the video display means 17.

6) If the operator sets program number 3
Is selected, the PID of the video data is 0x93, and it is recognized that the video data is the second encoded video data 2 based on the information in the identification information storage unit 15. The second reproduction prohibition unit 74 issues an instruction to the first video decoding unit 61 to inhibit the decoding of the second encoded video data, and also issues an instruction to the audio decoding unit 73 to inhibit the decoding of the audio data. As a result, the second encoded video data is not displayed on the video display means 17, and no audio is reproduced on the audio reproduction means 75.

As described above, the video data reproducing apparatus according to the sixth embodiment uses the first encoded video data 1 and the second
Demodulating means 11 for demodulating information including encoded video data 2 and identification information 3 for identifying whether the video data is the first encoded video data 1 or the second encoded video data 2. A separating unit 12 for extracting the video data selected by the operator from the information input from the demodulating unit 11 and the identification information, and accepting the selection of the video data by the operator, and Program selecting means 14 for instructing data, separating means 1
2, an identification information storage unit 15 for storing the identification information separated and extracted by the first unit 2, and a first video which decodes the first encoded video data 1 separated and extracted by the separation unit 12 and outputs the decoded video data as a video signal In the case of the second coded video data 2 based on the identification information 3 in the decoding means 61 and the identification information storage means 15, a command to inhibit video reproduction is output to the first video decoding means 61, A second playback prohibition unit 74 for prohibiting audio decoding of the decoding unit 73; determining the video data selected by the operator based on the information in the identification information storage unit 15; If the data is 1, the decoding is instructed, and if the second encoded video data 2 is reproduced, the reproduction is prohibited. Therefore, the first encoded video data 1 is correctly reproduced and the second encoded video data 2 is reproduced. Mistake due to It is possible to realize the video data reproducing apparatus for preventing.

Further, in the above embodiment, similarly to Embodiment 4 of the present invention, only the program of the first encoded video data may be displayed on the screen as a program table,
In this case, incorrect program selection can be prevented.

[0115]

As described above, according to the present invention, the video data of a plurality of programs are divided into packet units, and a plurality of packets of the video data and a packet containing information on the program are multiplexed and transmitted. In the video data transmission method, as the video data of the plurality of programs, for example, the current 59.94 fields (29.97 frames) NTSC
First encoded video data obtained by encoding an interlaced scanning signal or a 24-frame movie progressive scanning signal, for example, 59.94.
And transmitting the second encoded video data obtained by encoding the progressive scanning signal of the frame to the packet containing the information on the program, wherein the video data of the program is the first encoded video data or the second encoded video data. Since the information for discriminating whether the data is video data is transmitted, both of the first coded video data and the second coded video data can be transmitted so as to be correctly reproduced on the receiving side. Diversity and freedom can be increased.

Further, according to the present invention, there is provided a video data transmission method for dividing video data of a plurality of programs into packets, and multiplexing the plurality of packets of the video data and a packet containing information on a program and transmitting the multiplexed data. The first coded video data and the second coded video data are transmitted as the video data of the plurality of programs, and the video data of the program is the first coded video data in the program allocation table indicating the program. And the information for identifying whether the data is the second coded video data is transmitted, so that the video data of both the first coded video data and the second coded video data is It is possible to improve the variety and the degree of freedom of the programming that can be transmitted so that it can be correctly reproduced on the receiving side.

Further, according to the present invention, there is provided a video data transmission method for dividing video data of a plurality of programs into respective packet units and multiplexing the plurality of packets of the video data and a packet containing information relating to the program and transmitting the multiplexed data. The first coded video data and the second coded video data are transmitted as the video data of the plurality of programs, and the video data of the program is stored in the event information table indicating the content of the video data of the program. Information for identifying whether it is encoded video data or second encoded video data is described and transmitted, so that even if the same program is used, the first encoded video data and It is possible to improve the variety and freedom of program scheduling that both video data of the second encoded video data can be transmitted so as to be correctly reproduced on the receiving side. It is possible.

Further, according to the present invention, there is provided a video data transmission method for dividing video data of a plurality of programs into respective packet units, multiplexing the plurality of packets of the video data and a packet containing information relating to the program, and transmitting the multiplexed data. , First
And the second encoded video data, and the network information table indicating on which channel the program is transmitted indicates whether the video data of the program is the first encoded video data. Since information for identifying whether the data is encoded video data of the second type is described and transmitted, the first encoded video data and the second
In this case, it is possible to improve the versatility and the degree of freedom of the program scheduling that both video data of the coded video data can be transmitted so as to be correctly reproduced on the receiving side.

Further, according to the present invention, in the video data reproducing apparatus, the first coded video data, the second coded video data, and whether the video data is the first coded video data or the second coded video data. When receiving information including identification information for identifying whether the data is coded video data, the video data is determined based on the identification information, and a decoding instruction is output to the second video decoding means. Therefore, it is possible to realize a video data reproducing apparatus capable of correctly reproducing and displaying both video data of the first coded video data and the second coded video data.

Further, according to the present invention, in a video data reproducing apparatus provided with means for decoding the first coded video data, the first coded video data, the second coded video data, Received information including identification information for identifying whether the data is the first encoded video data or the second encoded video data, and if the received information is the first encoded video data based on the identification information, If the second encoded video data is instructed to be decoded, the first encoded video data is reproduced. It is possible to realize a video data reproducing device that prevents a malfunction due to video data.

Further, according to the present invention, in a video / audio data reproducing apparatus provided with means for decoding first encoded video data and audio decoding means, the first encoded video data and the second encoded video data are reproduced. Receiving information including video data and identification information for identifying whether the video data is the first coded video data or the second coded video data, and receiving the first data based on the identification information; A first reproduction prohibiting unit for instructing decoding if the video data is encoded and prohibiting reproduction of the second video data and reproduction of the second audio data if the video data is the second encoded video data; With the configuration, it is possible to realize a video data reproducing apparatus that correctly reproduces the first encoded video data and prevents malfunction due to the second encoded video data.

Further, according to the present invention, a plurality of video data including both the first coded video data and the second coded video data is converted into an event indicating the content of the video data of each program at each time. Video data to be multiplexed and transmitted together with information for identifying whether the video data of each program included in the information table and the event information table is the first coded video data or the second coded video data In a video data reproducing apparatus for selecting and reproducing any one of the plurality of programs transmitted by a transmission method, the video data content of each program at each time based on the event information table and the identification information and A program output means for creating a program table indicating whether the video data is the first coded video data or the second coded video data and outputting this as visible information on a display screen With this configuration, it is possible to easily confirm whether the program selected by the operator is the first encoded video data or the second encoded video data, and to prevent an incorrect selection. .

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing a video data transmission method according to a first embodiment of the present invention.

FIG. 2 is a diagram showing a configuration of transmission data in the video data transmission method according to the first embodiment of the present invention.

FIG. 3 is a diagram showing a data configuration of a PMT (program allocation table).

FIG. 4 is a diagram showing an example of code assignment of lower 8 bits of a system management identifier.

FIG. 5 is a diagram showing an example of code assignment of middle 6 bits of a system management identifier.

FIG. 6 is a flowchart showing a procedure on the transmitting side and a procedure on the receiving side in the video data transmitting method according to the first embodiment;

FIG. 7 is a diagram showing another data configuration of a PMT (program allocation table).

8 is a flowchart showing a procedure on the transmission side and a procedure on the reception side according to the data configuration of FIG. 7;

FIG. 9 is a diagram showing another data configuration of a PMT (program allocation table).

FIG. 10 is a diagram showing another data configuration of a PMT (program allocation table).

FIG. 11 is a diagram showing another data configuration of a PMT (program allocation table).

FIG. 12 is a diagram showing a transmission data configuration of a video data transmission method according to the second embodiment.

FIG. 13 is a diagram showing an EIT event information table indicating the location of a component type;

FIG. 14 is a diagram showing an example of code assignment of component types in the case of second encoded video data.

FIG. 15 is a diagram showing an example of component type code allocation in the case of first encoded video data.

FIG. 16 is a diagram showing a configuration of transmission data in a video data transmission method according to the third embodiment of the present invention.

FIG. 17 is a diagram showing a configuration of a network information table according to the third embodiment of the present invention.

FIG. 18 is a diagram showing an example of network ID code assignment according to the third embodiment of the present invention.

FIG. 19 is a diagram showing a configuration of a video data reproducing device according to a fourth embodiment of the present invention.

FIG. 20 is a flowchart for explaining the operation of the fifth embodiment of the present invention;

FIG. 21 is a diagram showing first encoded video data and second encoded video data as separate program guides on a display screen of the video data reproducing apparatus according to the fifth embodiment of the present invention.

FIG. 22 is a diagram showing a first encoded video data and a second encoded video data as a single program guide on a display screen of the video data reproducing apparatus according to the fifth embodiment of the present invention.

FIG. 23 is a diagram showing a video data reproducing device according to a fifth embodiment of the present invention.

FIG. 24 is a diagram showing a video data reproducing device according to a sixth embodiment of the present invention.

FIG. 25 is a diagram showing a configuration of a conventional video data transfer method.

FIG. 26 is a diagram showing a conventional video data reproducing apparatus.

FIG. 27 is a diagram showing a program table on a display screen of a conventional video data reproducing apparatus.

[Explanation of symbols]

 Reference Signs List 11 demodulation means 12 separation means 13 second video decoding means 14 program tuning means 15 identification information storage means 16 decoding instruction means 17 video display means 61 first video decoding means 62 first reproduction prohibition means 73 audio decoding means

Claims (20)

[Claims] In a video data transmission method for dividing encoded video data of a plurality of programs into packets and multiplexing and transmitting a plurality of packets of the video data and a packet containing information related to the program, N frames / second ( N: positive integer)
And the first coded video data obtained by coding the interlaced scan signal or the progressive scan signal and the second coded video data obtained by coding the M frame / second (M> N integer) progressive scan signal. Wherein information identifying whether the coded video data of the program is the first coded video data or the second coded video data is described in a packet containing information on the program, and transmitted. Video data transmission method. 2. The video data transmission method according to claim 1, wherein the packet containing the information on the program is a program allocation table indicating which packet the program is transmitted. . 3. The video data transmission method according to claim 1, wherein the packet including the information on the program is an event information table indicating the content of the program. 4. The video data transmission method according to claim 1, wherein the packet including the information on the program is a network information table indicating on which channel the program is transmitted. Method. 5. The video data transmitting method according to claim 2, wherein the information for identifying whether the video data of the program is the first encoded video data or the second encoded video data is:
A video data transmission method characterized in that it is described in a system management identifier which is one of system management descriptors of program information descriptors in a program allocation table. 6. The video data transmission method according to claim 2, wherein information identifying whether the video data of the program is the first coded video data or the second coded video data is stored in a program allocation table. A video data transmission method characterized by being described in a stream identifier of a program information descriptor therein. 7. The video data transmission method according to claim 3, wherein the information for identifying whether the encoded video data of the program is the first encoded video data or the second encoded video data is an event. A video data transmission method characterized by being described in a component identifier indicating an attribute of video data in an information table. 8. The video data transmission method according to claim 4, wherein information identifying whether the video data of the program is the first encoded video data or the second encoded video data is stored in a network information table. A video data transmission method characterized in that the data is described in a network identifier for identifying a network through which the video data is transmitted. 9. An interlaced scanning signal of N frames / sec (N: a positive integer) or first encoded video data obtained by encoding a progressive scanning signal and a progressive scanning signal of M frames / sec (M> N). And demodulated information including identification data for identifying whether the encoded video data is the first encoded video data or the second encoded video data. Demodulating means, and separating means for extracting the encoded video data selected by the operator from the information input from the demodulating means and the identification data, receiving the selection of the encoded video data by the operator,
Program selecting means for instructing the separating means on the encoded video data to be extracted; identification information storing means for storing the identification data separated and extracted by the separating means; First video decoding means for decoding the encoded video data and outputting as a video signal; decoding instruction means for instructing the first video decoding means to decode according to the information in the identification information storage means; Video data reproduction characterized by comprising first reproduction prohibition means for prohibiting or freezing the video reproduction for the first video decoding means if the encoded video data is the second encoded video data. apparatus. 10. An interlaced scanning signal of N frames / second (N: positive integer) or first encoded video data obtained by encoding a sequential scanning signal and a progressive scanning signal of M frames / second (M> N). And second encoded video data obtained by encoding
The first encoded audio data accompanying the first encoded video data, the second encoded audio data associated with the second encoded video data, and the encoded video data are the first encoded video data. And identification data for identifying whether the encoded audio data is the first encoded audio data or the second encoded audio data while identifying whether the encoded audio data is the second encoded video data. Demodulating means for demodulating, and separating means for extracting encoded video data selected by the operator from the information input from the demodulating means and the identification data, receiving the selection of the encoded video data by the operator,
Program selecting means for instructing the separating means on the encoded video data to be extracted; identification information storing means for storing the identification data separated and extracted by the separating means; First video decoding means for decoding the encoded video data and outputting as a video signal; audio decoding means for decoding the encoded audio data separated and extracted by the separation means and outputting the decoded audio data as an audio signal; Decoding instruction means for instructing the first video decoding means and the audio decoding means to perform decoding in accordance with the information in the storage means; and the first video data selected by the operator if the coded video data is the second coded video data. Second reproduction for prohibiting or freezing the video reproduction means for the video decoding means and prohibiting audio reproduction for the first encoded sound reproduction means. A video / audio data reproducing apparatus comprising a prohibition unit. 11. An interlaced scanning signal of N frames / sec (N: a positive integer) or first encoded video data obtained by encoding a progressive scanning signal and a progressive scanning signal of M frames / sec (M> N). And demodulated information including identification data for identifying whether the encoded video data is the first encoded video data or the second encoded video data. Demodulating means, and separating means for extracting the encoded video data selected by the operator from the information input from the demodulating means and the identification data, receiving the selection of the encoded video data by the operator,
Program selecting means for instructing the separating means on the encoded video data to be extracted; identification information storing means for storing the identification data separated and extracted by the separating means; first information separated and extracted by the separating means. A second video decoding means for decoding the encoded video data or the second encoded video data and outputting the decoded video data as a video signal; and instructing the second video decoding means to reproduce according to the information in the identification information storage means. A video data reproducing apparatus comprising: a second decryption command unit. 12. An interlaced scanning signal of N frames / sec (N: a positive integer) or first encoded video data obtained by encoding a progressive scanning signal, and a progressive scanning signal of M frames / sec (M> N). A plurality of pieces of program data including both video data of the second encoded video data obtained by encoding the program information are stored in an event information table indicating the content of the video data of each program at each time, and individual program data included in the event information table. The plurality of programs transmitted by the video data transmission method of multiplexing and transmitting together with information for identifying whether the coded video data of the program is the first coded video data or the second coded video data. In the video data device for selecting and reproducing any of the above, the content of the video data of each program at each time based on the event information table and the identification information table and the coded video data is a first code. Program table creating means for creating a program table indicating whether the data is encoded video data or second encoded video data, and outputting this as visible information on a display screen of the video display means. Video data playback device. 13. The video data reproducing apparatus according to claim 12, wherein said program table output means outputs a program including only the second encoded video data as a program table. 14. The video data reproducing apparatus according to claim 12, wherein said program table output means outputs a program including only the first encoded video data as a program table. 15. The video data transmission method according to claim 1, wherein a maximum frame frequency of the first encoded video data is 30 frames / second. Video data transmission method. 16. The video data reproducing apparatus according to claim 9, wherein the maximum frame frequency of the first encoded video data is 30 frames / second. Characteristic video data playback device. 17. The video / audio data reproducing apparatus according to claim 10, wherein the maximum frame frequency of the first encoded video data is 30 frames / second. 18. The video data transmission method according to claim 1, wherein the first encoded video data has a maximum number of horizontal pixels of 720, a maximum number of vertical scanning lines of 576, and a maximum of 576. Video data obtained by coding an interlaced scan or progressive scan signal having a frame frequency of 30 frames / second, the second coded video data has a maximum number of horizontal pixels of 720, a maximum number of vertical scanning lines of 576, and a maximum frame frequency of 60 frames / second 3. A transmission method, characterized in that the transmission data is video data obtained by encoding a progressive scanning signal. 19. The video data reproducing apparatus according to claim 9, wherein the first encoded video data has a maximum number of horizontal pixels of 720 and a maximum number of vertical scanning lines of 576. Video data obtained by encoding an interlaced scan or sequential scanning signal having a maximum frame frequency of 30 frames / sec. The second encoded video data has a maximum number of horizontal pixels of 720, a maximum number of vertical scanning lines of 576, and a maximum frame frequency of 60 frames. A video data reproducing apparatus characterized in that the video data is video data obtained by encoding a progressive scanning signal at a rate of / sec. 20. The video / audio data reproducing apparatus according to claim 10, wherein the first encoded video data has a maximum number of horizontal pixels of 720, a maximum number of vertical scanning lines of 576, and a maximum frame frequency of 30 frames / sec. Alternatively, video data obtained by coding a progressive scanning signal, and second coded video data are obtained by coding a progressive scanning signal having a maximum number of horizontal pixels of 720, a maximum number of vertical scanning lines of 576, and a maximum frame frequency of 60 frames / sec. A video / audio data reproducing apparatus characterized by being data.