JP2001024990A - Method for transmitting broadcasting signal, and receiver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To protect the copyright of a pertinent video by multiplexing program- related information and analog video signal output control information showing propriety whether the video included in a program is outputted in a receiver as an analog signal or not and transmitting them. SOLUTION: An analog video output control information generating means 6 generates analog video signal output control information for a signal source 1. A program-related information generating means 5 generates program-related information for the signal source 1 by using analog video signal output control information which is outputted from the means 6 and the generated program- related information is multiplexed with the output of a source encoding means 2 by a multiplexing means 3. After the output of the source encoding means 2 and the output of the means 5 are multiplexed, they are channel-encoded by a channel encoding means 4 and transmitted to the side of the receiving device. An information composition means 11 composes information outputted from a program-related information processing means 13 and an analog video signal output control means 14 and outputs it to signal output equipment 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a broadcast signal transmission method and a receiver for receiving a broadcast signal transmitted by using the broadcast signal transmission method.

[0002]

2. Description of the Related Art FIG. 7 is a diagram showing the configuration of a conventional system for digitizing video, audio, and data and sending the same, and converting what is sent out through a transmission line from digital to analog and displaying it. Reference numeral 101 denotes a signal source including a video signal, an audio signal, and data including a still image or a moving image, and 102 denotes a video signal or an audio signal
PEG (Moving Picture Image Coding Experts Grou
Source encoding means 105 for encoding according to the information source encoding method specified in p), for a program to be transmitted, program-related information 105a (for example, Program-related information generating means for generating the types of video, audio, and data constituting the program, a program number, a start time, and the like.
PEG system standard (GENERIC CODING OF MOVING P
ICTURES AND ASSOCIATED AUDIO: SYSTEM Recommendati
on H.222.0, ISO / IEC 13818-1) and the DVB system standard (Digital Video
Broadcasting (DVB) systems, ETS300 468, January 1996
) Is generated based on the standard.

[0003] Also, 103 is a multiplexing means for multiplexing the coded signal and program-related information, 104 is an error correction coding means for processing data to protect against transmission line errors, and a digital signal is transmitted. Channel encoding means including digital modulation means. Also, 1
Reference numeral 07 denotes a transmission path including a transmitter, an actual transmission path, and a tuner. Reference numeral 108 denotes a channel decoding unit comprising digital demodulation means for demodulating a digitally modulated signal and error correction means for a data error occurring on the transmission path 107. 109 denotes a channel decoding means.
Demultiplexing means for demultiplexing the output multiplexed digital signal into an encoded signal and program-related information,
Reference numeral 110 denotes a source decoding unit for decoding a signal coded according to, for example, an information source coding method specified in MPEG into a video signal or an audio signal. 113 is input from a demultiplexing unit 109 for a transmitted program. Program-related information processing means for performing program selection, display screen generation for program selection / presentation processing, voice synthesis, etc. using program-related information necessary for selecting the program; Information synthesizing means for synthesizing video and audio information outputted by the information processing means 113, 112
Is a signal output device for outputting the video, audio and data synthesized by the information synthesizing means 111.

[0004] The multiplexing means 103 may have a scrambling function for scrambling the signal, and the demultiplexing means 109 may have a descrambling function for returning the scrambled signal to the original signal.

Next, the operation of the conventional system shown in FIG. 7 will be described. A video signal, an audio signal, and data comprising a still image or a moving image from the signal source 101 are encoded by a source encoding means 102 according to an information source encoding method defined by MPEG, and the program , For example, the type of information constituting the program, the program number, the start time, etc., and multiplexes the signals output by the source encoding means 102 and the program-related information generating means 105 with the multiplexing means 103. To multiplex. The multiplexing is MPEG
Or the DVB system standard, which is a European digital broadcasting standard. The multiplexed digital signal is processed by channel encoding means 104 using error correction coding means for processing data for protection against transmission line errors and digital modulation means for transmitting a digital signal. Is transmitted on a transmission path 107 including a transmitter, an actual transmission path, and a tuner.

[0006] The transmitted result is subjected to digital demodulation and error correction processing by channel decoding means 108. The channel decoding unit 108 outputs the same signal as the signal output from the multiplexing unit 103 by performing a procedure reverse to that of the channel encoding unit 104. The multiplexing / demultiplexing means 109 is opposite to the multiplexing means 103,
Demultiplexing is performed based on the MPEG system standard and the DVB system standard, and the separated signal is sent to a source decoding unit 110 and a program-related information processing unit 113.
Is output to

[0007] The information output to the source decoding means 110 is decoded into a video or audio signal according to, for example, the MPEG standard. Program-related information processing means 113
Performs display screen generation, voice synthesis, and the like for program selection and presentation processing using program-related information necessary for selecting the program based on the program-related information separated by the demultiplexing means 109. Means. The information synthesizing unit 111 synthesizes information output from the source decoding unit 110 and the program-related information processing unit 113, and
At 2, the video signal is output to, for example, a monitor, the audio signal is output to, for example, a speaker, and the data signal is output to, for example, a computer.

[0008]

As described above, according to the conventional broadcast signal transmission method and the conventional receiver, the broadcast signal transmission,
And receive broadcast signals, but do not send the information for controlling the specified analog video output. For example, appropriate copyright protection for the analog video signal output by the receiver for the corresponding video However, there is a problem that the analog video signal cannot be prohibited when the operation is not performed.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems. For example, by transmitting information for controlling a specified analog video output, a receiving apparatus can be provided for a corresponding video. Even if the analog video signal output is not properly copyright protected, it is possible to protect the copyright of the corresponding video by prohibiting this analog video signal, a broadcast signal transmission method, and It is an object of the present invention to provide a receiving device that receives a broadcast signal transmitted by the broadcast signal transmission method.

[0010]

In order to solve the above-mentioned problems, a broadcast signal transmission method according to the present invention (Claim 1) provides a program including video, audio and data, and a program which is information related to the program. The related information and the analog video signal output control information indicating whether the video included in the program can be output as an analog signal by the receiving device are multiplexed and transmitted.

[0011] Further, a receiving apparatus according to the present invention (Claim 2)
Is a program including video, audio, and data, program-related information that is information related to the program, and analog video signal output control information indicating whether or not the video included in the program can be output as an analog signal by the receiving device. Is a receiving device for receiving a multiplexed and transmitted broadcast signal, comprising means for controlling an analog video signal output based on the multiplexed and transmitted analog video signal output control information. is there.

A receiving apparatus according to the present invention (claim 3)
Is a program including video, audio, and data, program-related information that is information related to the program, and analog video signal output control information indicating whether or not the video included in the program can be output as an analog signal by the receiving device. Is a receiving device for receiving a multiplexed and transmitted broadcast signal, based on the multiplexed and transmitted analog video signal output control information, instead of outputting an analog video signal, For presenting information indicating that the video is not output.

A receiving apparatus according to the present invention (Claim 4)
Is a program including video, audio, and data, program-related information that is information related to the program, and analog video signal output control information indicating whether or not the video included in the program can be output as an analog signal by the receiving device. A receiving device for receiving a multiplexed and transmitted broadcast signal, wherein the receiving device outputs an analog video signal in a video format of the transmitted video based on the multiplexed and transmitted analog video signal output control information. Instead of this, a means for converting the transmitted video into a video format different from the video format and outputting an analog video signal is provided.

Further, a receiving apparatus according to the present invention (Claim 5)
Is a program including video, audio, and data, program-related information that is information related to the program, and analog video signal output control information indicating whether or not the video included in the program can be output as an analog signal by the receiving device. A receiving device for receiving a multiplexed and transmitted broadcast signal, wherein the receiving device outputs an analog video signal in a video format of the transmitted video based on the multiplexed and transmitted analog video signal output control information. Means for converting the transmitted video into a video format different from the video format and outputting an analog video signal, and a video format capable of outputting the video of the program to the viewer based on the analog video signal output control information Means for presenting information about

[0015]

(Embodiment 1) FIG. 1 is a diagram showing a configuration of a broadcast signal transmission method and a receiving apparatus according to Embodiment 1 of the present invention. In the figure, 1 is a signal source, 2 is a source encoding means, 3 is a multiplexing means, 4 is a channel encoding means, 5 is a program related information generating means,
Signal source 101, source encoding means 102, multiplexing means 103, channel encoding means 104, and program-related information generating means 105 in the conventional example of FIG.
The same or equivalent means. However, the program-related information generating means 5 has a function of generating program-related information using analog video signal output control information described later.

Reference numeral 6 denotes analog video output control information generating means for generating analog video signal output control information indicating whether a video included in a transmitted program can be output as an analog signal by the receiving device. The analog video signal output control information transmitted in the first embodiment is information indicating that the analog video signal output is prohibited in the video format of the transmitted video, and is information other than the video format of the transmitted video. It may include information indicating that analog output for which the format is specified is prohibited.

7 is a transmission line, 8 is channel decoding means, 9 is demultiplexing means, 10 is source decoding means, 1
1 is an information synthesizing unit, 12 is a signal output device, and 13 is a program-related information processing unit, which is a transmission line 107, a channel decoding unit 108, a demultiplexing unit 109, a source decoding unit 110, an information synthesizing unit in the conventional example of FIG. This is the same as or equivalent to the means 111, the signal output device 112, and the program-related information processing means 113. However, the program-related information processing means 13 has a function of also outputting analog video signal output control information.

Numeral 14 denotes an analog video output control means. According to the analog video signal output control information output from the program-related information processing means 13, the source decoding is performed only when the information does not indicate the prohibition of the analog video signal output. The video signal output from the means 10 to the information synthesizing means 1
1 is output.

Next, in configuring the present invention, the analog video signal output control information will be described first, and then the actual operation in the first embodiment will be described.

FIG. 2 is a diagram showing an example of a descriptor including analog video signal output control information generated by the analog video output control information generating means 6 in FIG. ARIB STD-B10 Version 1.1, July 1998)
Digital copy control descriptor of the program related information described in "Part 2: Data structure and definition of program arrangement information"
FIG. 9 is a diagram illustrating an example of a digital copy control descriptor when analog video signal output control information is added to (Digital copy control descriptor).

In the digital copy control descriptor shown in FIG. 2, a descriptor tag is a code for identifying the descriptor, and a descriptor length (descriptor len).
gth) indicates the length of the entire descriptor, digital copy control information (digital recording control data) indicates information for controlling the copy generation, and the maximum transmission rate flag (m
aximum bit rate flag) indicates that the subsequent maximum transmission rate field is valid when the 1-bit flag is "1", and a component control flag.
When the 1-bit flag is “1”, the field after the component control length described later is valid, and digital copy control information and the like described in the field are defined for each component constituting the program. The maximum transmission rate (maximum
bit rate) indicates the transmission rate of the stream packet, component control length
Indicates the length of the following component control loop,
The component tag (component tag) is for identifying a component that constitutes a program, and is referred to as a “program arrangement information standard used for digital broadcasting” ARIB STD-B10
Has the same meaning as Reserved bits (reserved fu
ture use) is a bit reserved for the future.

Analog video signal output control information 0 (analog
video output control data 0) indicates analog video signal output control information in the video of the program specified by the digital copy control descriptor. For example, if the analog video signal output control information 0 is “0”, Although the analog video signal may be output, if the analog video signal output control information 0 is “1”, it indicates that the analog video signal of the transmitted video must not be output.

Analog video signal output control information 1 (analog
video output control data 1) to analog video signal output control information 4 (analog video output control data)
4) indicates analog video signal output control information in a video indicated by a component tag which is a tag for identifying a component constituting a program. For example, analog video signal output control information 1 (analog video
output control data 1) indicates analog video signal output control information of an interlaced video signal having 480 effective scanning lines, and analog video signal output control information 2 (analog video output control data 2) indicates the number of effective scanning lines. Indicates analog video signal output control information of 480 progressive scan (progressive) video signals, and indicates analog video signal output control information 3 (analog video output control data).
3) indicates analog video signal output control information of a progressive scanning video signal having 720 effective scanning lines;
Analog video signal output control information 4 (analog video outpu
t control data 4) indicates analog video signal output control information of an interlaced video signal having 1080 effective scanning lines.

Further, analog video signal output control information 1
(Analog video output control data1) to analog video signal output control information 4 (analog video output control
l data4) For example, if “0”, the corresponding analog video signal may be output, but if “1”, it indicates that the corresponding analog video signal must not be output.

Hereinafter, the operation of the broadcast signal transmitting method and the receiving apparatus according to the first embodiment of the present invention will be described with reference to FIGS.

In FIG. 1, signal sources 1 are video, audio, and data, and these signals are digitally encoded by source encoding means 2. These configurations are the same as in the conventional example.

The analog video output control information generating means 6
This is means for generating analog video signal output control information for the signal source 1. For example, when the video format of the video to be transmitted is an interlaced video signal having an effective scanning line number of 1080 lines, the analog video signal output control information of the analog video signal output control information is required only when the receiving device wants to prohibit the analog video signal. Analog video signal output control information 0 is "1"
Is output to the program-related information generating means 5 described later.

Further, for example, when the video format of the video to be transmitted is an interlaced video signal having 1080 effective scanning lines, the receiving apparatus sequentially scans 720 effective scanning lines. To prohibit the output of both the analog video signal of the (progressive) video signal and the analog video signal of the interlaced video signal having 1080 effective scanning lines, the analog video signal of the analog video signal output control information is required. The output control information 3 and the analog video signal output control information 4 are both output as "1" to a program-related information generating means 5 described later.

The program-related information generating means 5 is means for generating program-related information for the signal source 1 using the analog video signal output control information output from the analog video output control information generating means 6. The multiplexing means 3 multiplexes the generated program-related information with the output of the source encoding means 2.

After the output of the source encoding means 2 and the output of the program-related information generating means 5 are multiplexed by the multiplexing means 3, they are channel-encoded by the channel encoding means 4 and transmitted to the receiving device via the transmission path 7. Sent. The received signal is channel-decoded by the channel decoding means 8, and the output result is sent to the source decoding means 10 for video, audio and data by the demultiplexing means 9, and the program-related information is sent to the program-related information processing means 13. Each is output. The video signal and the audio signal decoded by the source decoding means 10 are output together with the data to the information synthesizing means 11 via an analog video signal output control means 14 described later.

The information synthesizing means 11 synthesizes information output from the program-related information processing means 13 and the analog video signal output control means 14 and outputs the synthesized information to the signal output device 12.

Here, the analog video signal output control means 1
4 will be described with reference to FIG. FIG. 3 is a diagram showing a detailed configuration of the analog video signal output control means 14 in FIG. 1 according to the first embodiment.

In FIG. 3, the analog video signal output control means 14 comprises a video signal switching means 14a. First, after detecting the video format of the video to be decoded, the program-related information processing means 13 uses the analog video signal output control information included in the digital copy control descriptor to convert the video signal of the detected video format. An analog video signal output control signal indicating whether or not analog output is possible is output to the analog video signal output control means 14.

The video signal switching means 14a of the analog video signal output control means 14 outputs the video signal among the decoded signals input from the source decoding means 10 in accordance with the analog video signal output control signal input from the program-related information processing means 13. For example, if the analog video signal output control signal is “0”, the video signal is directly output to the information synthesizing unit 11, and if the analog video signal output control signal is “1”, the video signal is transmitted to the information synthesizing unit 11. Is controlled so as to output a black signal instead of the output. In addition, of the decoded signals input from the source decoding means 10, signals other than the video signal are output to the information synthesizing means 11 as they are.

For this reason, if the analog video signal output control signal is "1", no video signal is output to the information synthesizing means 11, so that the output of the information synthesizing means 11 is output to an external recording device other than the signal output device 12, for example. If the analog video signal output control signal is "1", the video signal cannot be recorded on an external recording device.

As described above, in the broadcast signal transmission method according to the first embodiment, a program including video, audio, data,
Since the program-related information, which is information related to the program, and the analog video signal output control information indicating whether or not the video included in the program can be output as an analog signal by the receiving device, the data is multiplexed and transmitted. For example, it is possible to realize a broadcasting system in which the receiving device can prohibit the output of the analog video signal even when the analog video signal output from the receiving device for the corresponding video is not properly protected. .

In the receiving apparatus according to the first embodiment, a program including video, audio, and data, program-related information that is information related to the program, and a video included in the program are converted into analog signals by the receiving apparatus. Receiving a broadcast signal transmitted by multiplexing analog video signal output control information indicating whether or not to output the analog video signal, and outputting an analog video signal based on the multiplexed and transmitted analog video signal output control information; , For example, even if the analog video signal output from the receiving device for the corresponding video is not properly protected, the receiving device outputs the analog video signal. , It is possible to provide a viewer with a receiving device that does not output an analog video signal to an external recording device.

Therefore, by obligating the receiving apparatus to have a means for controlling the output of an analog video signal as a copyright protection means for not outputting a copyright-protected video signal from the receiving device, an external analog video input terminal can be provided. Since recording to a recording device having the above can be prevented, the copyright of the video can be protected.

The analog video signal output control information 0 to 4 defined above is merely an example, and the present invention is not limited to this. For example, if the analog control information 0 is
A video signal other than the interlaced video signal having 480 effective scanning lines may be shown. These circumstances are the same in the following embodiments.

(Embodiment 2) Next, Embodiment 2 of the present invention will be described with reference to FIGS. FIG. 1 is also a diagram showing a configuration of a broadcast signal transmission method and a receiving device according to the second embodiment, but differs in the internal configuration of the analog video signal output control means 14 in FIG. FIG. 4 is a diagram showing a detailed configuration of the analog video signal output control means 14 in FIG. 1 in the second embodiment, and the same reference numerals as those in FIG. 3 denote the same or corresponding parts.

The operation of the analog video signal output control means 14 according to the second embodiment will be described below with reference to FIG. In FIG. 4, the analog video signal output control means 14
Are video signal switching means 14a and display screen generation means 14b
It consists of. The video signal switching means 14a has the same function as the function described in the first embodiment with reference to FIG. 3 and operates similarly. The display screen generating means 14b is a means for presenting information to the viewer that the video of the program is not output, and for example, as a video signal, a message of "video of the program is not output" composed of bitmap data. This is a means for outputting to the information synthesizing means 11. The content of the message output by the display screen generating means 14b can be updated by an updating means (not shown).

First, the program-related information processing means 13 detects the video format of the video to be decoded, and then uses the analog video signal output control information included in the digital copy control descriptor to convert the detected video format. An analog video signal output control signal indicating whether or not analog output of the video signal is possible is output to the analog video signal output control means 14.

The video signal switching means 14a of the analog video signal output control means 14 determines whether the analog video signal output control signal is "0" according to the analog video signal output control signal input from the program-related information processing means 13. The video signal among the decoded signals input from the source decoding means 10 is output as it is to the information synthesizing means 11, and if the analog video signal output control signal is "1", the display screen generating means 14b generates it. A video signal is output to the information synthesizing unit 11 as a message such as "No video of the program is output".

The signals other than the video signals among the decoded signals input from the source decoding means 10 are output to the information synthesizing means 11 as they are. By displaying this message on the signal output device, the viewer can know that the video is not intentionally displayed.

As described above, in the receiving apparatus according to the second embodiment, the program including video, audio, and data, the program-related information that is information related to the program, and the video included in the program are analogized by the receiving apparatus. The analog video signal output control information indicating whether or not it can be output as a signal receives the multiplexed and transmitted broadcast signal, and the analog video signal output control information based on the multiplexed and transmitted analog video signal output control information. A configuration comprising means for controlling output, wherein instead of outputting an analog video signal based on the multiplexed and transmitted analog video signal output control information, the video of the corresponding program is not output to the viewer. Since it is configured to have a means for presenting information to be indicated, for example, an appropriate Even if the copyright is not protected, the receiving device prohibits the output of the analog video signal, thereby providing the viewer with a receiving device that does not output the analog video signal to the external recording device, and the analog video signal. It is possible to provide a viewer with a receiving device that displays a message that allows the viewer to understand that the output of the message is prohibited.

In the second embodiment, instead of outputting the analog video signal based on the analog video signal output control information, means for presenting information indicating that the video of the program is not output to the viewer is provided. Although a message is configured to be displayed on the video signal output device as, for example, a message that the video of the program is not output is a light bulb,
It goes without saying that the same effect can be obtained by presenting the same information to the viewer using an LED or the like.

Third Embodiment Next, a third embodiment of the present invention will be described with reference to FIGS. FIG. 1 is also a diagram showing a configuration of a broadcast signal transmission method and a receiving device according to the third embodiment, but the internal configuration of the analog video signal output control means 14 in FIG. 1 is different. FIG. 5 is a diagram showing a detailed configuration of the analog video signal output control means 14 in FIG. 1 according to the third embodiment, and the same reference numerals as those in FIGS. 3 and 4 denote the same or corresponding parts.

The program-related information processing means 13 in the third embodiment detects the video format of the video to be decoded, and detects the detected video format from the analog video signal output control information contained in the digital copy control descriptor. An analog video signal output control signal indicating whether or not analog output of the video signal can be performed is output to the analog video signal output control means 14. Further, the program-related information processing means 13 also outputs to the analog video signal output control means 14 a format designating signal instructing to convert the decoded video into a video format different from the video format and output an analog video signal. .

Hereinafter, the operation of the analog video signal output control means 14 according to the third embodiment will be described with reference to FIG. In FIG. 5, the analog video signal output control means 14
Are video signal switching means 14a, display screen generation means 14
b and video format conversion means 14c. Video signal switching means 14a and display screen generating means 14b
Have the same functions as those described with reference to FIG. 4 in the second embodiment, and operate similarly. Video format converter 14c
Is a video format input by using a format designation signal indicating that a video format output from the program-related information processing means 13 is converted into a video format different from the video format of the video to be decoded and an analog video signal is output. This is a means for converting to a video format different from the above and outputting an analog video signal.

The video signal switching means 14a of the analog video signal output control means 14 determines whether the analog video signal output control signal is "0" according to the analog video signal output control signal input from the program-related information processing means 13. The video signal among the decoded signals input from the source decoding means 10 is output as it is to the information synthesizing means 11, and if the analog video signal output control signal is "1", the display screen generating means 14b generates it. A video signal is output to the information synthesizing unit 11 as a message such as "No video of the program is output". Source decoding means 1
Of the decoded signals input from 0, signals other than the video signal are output to the information synthesizing means 11 as they are. By displaying this message on the signal output device, the viewer can know that the video is not intentionally displayed.

Further, the video format conversion means 14c
Is a video format input by using a format designation signal indicating that a video format output from the program-related information processing means 13 is converted into a video format different from the video format of the video to be decoded and an analog video signal is output. And converts it to a different video format and outputs an analog video signal.

For example, when the format of the image to be transmitted is an interlaced video signal having 1080 effective scanning lines, the receiving apparatus sequentially scans the image with 720 effective scanning lines (progressive). To prohibit the output of both the analog video signal of the video signal and the analog video signal of the interlaced video signal having 1080 effective scanning lines, the analog video signal output control information of the analog video signal output control information 3 and the analog video signal output control information 4 are both multiplexed as program-related information as "1".

In this case, in the receiving apparatus, the analog video signal of the progressive scanning video signal having 720 effective scanning lines and the analog video signal of the interlaced video signal having 1080 effective scanning lines are provided. Both signals cannot be output, but other video formats, for example, an analog video signal of a progressively scanned (progressive) video signal having 480 effective scanning lines or 480 effective scanning lines. This means that an analog video signal of an interlaced video signal of a book can be output.

The video format conversion means 14c uses the format designation signal output from the program-related information processing means 13 to output, for example, an interlaced video signal having 1080 effective scanning lines. The video format is converted to a progressive scan (progressive) video signal having 720 effective scanning lines or an interlaced video signal having 480 effective scanning lines. The video signal is output to the information synthesizing unit 11. It goes without saying that the video synthesizing means 11 and the signal output device 12 can handle a plurality of video signals.

As described above, in the receiving apparatus according to the third embodiment, the program including video, audio, and data, the program-related information that is information related to the program, and the video included in the program are analogized by the receiving apparatus. The analog video signal output control information indicating whether or not it can be output as a signal receives the multiplexed and transmitted broadcast signal, and the analog video signal output control information based on the multiplexed and transmitted analog video signal output control information. A configuration comprising means for controlling output, wherein instead of outputting an analog video signal based on the multiplexed and transmitted analog video signal output control information, the video of the corresponding program is not output to the viewer. A means for presenting information to be displayed, wherein instead of outputting an analog video signal in the video format of the transmitted video, transmission is performed. Means for converting the video into a video format different from the video format of the received video and outputting an analog video signal. Even if not performed, the receiving device prohibits the output of the analog video signal to provide the receiving device that does not output the analog video signal to the external recording device to the viewer, and the output of the analog video signal is suppressed. Provide the viewer with a receiving device that displays a message that allows the viewer to know that it is prohibited,
It is possible to provide a viewer with a receiving device that can obtain an analog video signal by converting the transmitted video into a video format different from the video format.

(Embodiment 4) Embodiment 4 of the present invention will be described with reference to FIGS. FIG. 1 is also a diagram showing a broadcast signal transmission method and a configuration of a receiving device according to a fourth embodiment, but the analog video signal output control means 1 shown in FIG.
4 has a different internal configuration. FIG. 6 is a diagram showing a detailed configuration of the analog video signal output control means 14 in FIG. 1 in the fourth embodiment, and the same reference numerals as those in FIGS. 3 to 5 denote the same or corresponding parts.

The program-related information processing means 13 in the fourth embodiment outputs to the analog video signal output control means 14 an analog video signal output control signal indicating whether or not analog output of the detected video format video signal is possible. Although the output of the format designation signal to the analog video signal output control means 14 has already been described in the description of the third embodiment, the analog video signal output control signal transitions from “1” to “0”. Then, in order to present to the viewer information indicating that the analog video signal output control state has transitioned to the viewer, the analog video signal is output after being converted to a video format different from the video format of the currently decoded video. The video synthesizing instruction signal that instructs to output a message etc. on the screen that is And outputs it to the 14.

The operation of the analog video signal output control means 14 according to the fourth embodiment will be described below with reference to FIG. In FIG. 6, the analog video signal output control means 14
Are video signal switching means 14a, display screen generation means 14
b, a video format converter 14c, a second display screen generator 14d, and a video synthesizer 14e. Video signal switching means 14a, display screen generating means 1
4b and the video format conversion means 14c have the same functions as those described in the third embodiment with reference to FIG.

The second display screen generating means 14d provides the viewer with information indicating that the analog video signal output control state has changed, for example, when the analog video signal output control signal changes from "1" to "0". The means for presenting to the viewer is, for example, a means for outputting a message composed of bitmap data as a video signal to a video synthesizing means 14e described later. The video synthesizing means 14e is a means for synthesizing the video signal output from the second display screen generating means 14d and the format-converted video signal output from the video format converting means 14c, and outputting to the information synthesizing means 11. .

The video signal switching means 14a of the analog video signal output control means 14 is controlled by the analog video signal output control signal input from the program related information processing means 13 as described in the third embodiment. The video signal of the decoded signal input from the decoding means 10 or the video signal generated by the display screen generating means 14b is output to the information synthesizing means 11. Further, the video format conversion unit 14c converts the video format into a video format different from the input video format and outputs an analog video signal to the video synthesis unit 14e.

For example, when the analog video signal output control signal transitions from “1” to “0”, the second display screen generating means 14d provides the viewer with information indicating that the analog video signal output control state has transitioned. As means for presenting to the viewer, for example, "the transmitted video of the relevant program can be output in another video format" or "the transmitted video of the relevant program is another video Is output as a video signal to a video synthesizing unit 14e, which will be described later. The video synthesizing unit 14e outputs the video signal output from the second display screen generating unit 14d and the video format converting unit. The image signal is combined with the format-converted video signal output by 14 c and output to the information combining unit 11.

Therefore, on the display screen for the viewer who is watching the video signal whose video format has been converted on the signal output device, for example, “the transmitted video of the corresponding program is output in another video format. Is displayed, the viewer can know that the video of the program is output in another video format.

As described above, in the receiving apparatus according to the fourth embodiment, the program including video, audio, and data, the program-related information that is information related to the program, and the video included in the program are analogized by the receiving apparatus. The analog video signal output control information indicating whether or not it can be output as a signal receives the multiplexed and transmitted broadcast signal, and the analog video signal output control information based on the multiplexed and transmitted analog video signal output control information. A configuration comprising means for controlling output, wherein instead of outputting an analog video signal based on the multiplexed and transmitted analog video signal output control information, the video of the corresponding program is not output to the viewer. A means for presenting information to be displayed, wherein instead of outputting an analog video signal in the video format of the transmitted video, transmission is performed. Means for converting the video format into a video format different from the video format of the multiplexed video and outputting an analog video signal, and based on the multiplexed and transmitted analog video signal output control information, Is provided with means for presenting information about a video format in which the video of the corresponding program can be output. For example, the analog video signal output from the receiving device for the relevant video is not properly protected. Even in the case, the receiving device prohibits the output of the analog video signal to provide the viewer with a receiving device that does not output the analog video signal to the external recording device,
In addition to providing the viewer with a receiving device that displays a message that allows the viewer to know that the output of the analog video signal is prohibited, and converting the transmitted video to a video format different from the video format, A receiver capable of obtaining a video signal can be provided to the viewer, and the analog video signal output after being converted into a different video format can be viewed in such a manner that the video of the corresponding program is output in another video format. It is possible to provide a viewer with a receiving device capable of displaying a message so that the viewer can understand the message.

In the fourth embodiment, based on the analog video signal output control information, information indicating that video is output or that video output is possible other than the currently displayed video format is presented. As a means, a message is displayed on the video signal output device. , LED
It is needless to say that the same effect can be obtained by presenting to the viewer in such a manner.

[0065]

As described above, according to the broadcast signal transmission method according to the present invention (claim 1), a program including video, audio, and data, program-related information that is information related to the program, and program related information Since the analog video signal output control information indicating whether the video included in the program can be output as an analog signal by the receiving device is multiplexed and transmitted, for example, the analog video output by the receiving device for the corresponding video Even if the signal is not appropriately protected by copyright, broadcasting that can provide a receiver capable of protecting the copyright of the corresponding video by prohibiting the output of the analog video signal to the viewer. There is an effect that the system can be realized.

According to the receiving apparatus of the present invention (claim 2), a program including video, audio, and data, program-related information that is information related to the program, and a video included in the program are received. A receiving apparatus for receiving a broadcast signal transmitted by multiplexing analog video signal output control information indicating whether the apparatus can output the analog video signal as an analog signal, wherein the multiplexed and transmitted analog video signal output control is performed. Since a means for controlling the output of the analog video signal based on the information is provided, a case where the appropriate copyright protection is not applied to the analog video signal output from the receiving device to the corresponding video from the receiving device, for example, This has the effect that the output of the analog video signal can be prohibited.

According to the receiving apparatus of the present invention (claim 3), a program including video, audio, and data, program-related information that is information related to the program, and a video included in the program are received. A receiving apparatus for receiving a broadcast signal transmitted by multiplexing analog video signal output control information indicating whether the apparatus can output the analog video signal as an analog signal, wherein the multiplexed and transmitted analog video signal output control is performed. Based on the information, instead of outputting an analog video signal, since a means for presenting information indicating that the video of the corresponding program is not output to the viewer is provided, the receiving device, for example, the receiving device for the relevant video The output of this analog video signal can be prohibited even if the analog video signal output by the There is an effect that a message such as viewer seen that the output of the grayed video signal is prohibited can be presented to the viewer.

According to the receiving apparatus of the present invention (claim 4), a program including video, audio, and data, program-related information that is information related to the program, and a video included in the program are received. A receiving apparatus for receiving a broadcast signal transmitted by multiplexing analog video signal output control information indicating whether the apparatus can output the analog video signal as an analog signal, wherein the multiplexed and transmitted analog video signal output control is performed. Based on the information, instead of outputting an analog video signal of the relevant video format, since it is provided with means for converting to a video format different from the relevant video format and outputting an analog video signal, from the receiving device, for example, to the relevant video Even if the analog video signal output by the receiving device is not properly protected, Signal output can be prohibited, a message that the viewer can understand that the output of the analog video signal is prohibited can be presented to the viewer, and further converted to a video format different from the corresponding video format. As a result, an analog video signal is obtained, so that the viewer can view a program in a different video format.

According to the receiving apparatus of the present invention (claim 5), a program including video, audio, and data, program-related information that is information related to the program, and a video included in the program are received. A receiving apparatus for receiving a broadcast signal transmitted by multiplexing analog video signal output control information indicating whether the apparatus can output the analog video signal as an analog signal, wherein the multiplexed and transmitted analog video signal output control is performed. Means for outputting an analog video signal by converting to a video format different from the video format instead of outputting an analog video signal of the video format based on the information; Has a means for presenting information about the video format in which the video of the program can be output,
From the receiving device, for example, even if the analog video signal output from the receiving device for the corresponding video is not properly protected, the output of the analog video signal can be prohibited, and A message that allows the viewer to know that the signal output is prohibited can be displayed, converted to a different video format to obtain an analog video signal, and further converted to a different video format and output. There is an effect that a message can be presented to the viewer so that the viewer can understand the information about the video format in which the video of the program can be output to the analog video signal.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of a broadcast signal transmission method and a receiving apparatus according to Embodiments 1, 2, 3, and 4 of the present invention.

FIG. 2 is an analog video output control information generating means 6 in FIG.
Showing an example of a digital copy control descriptor generated when the analog video signal output control information is added in FIG.

FIG. 3 is a diagram showing a detailed configuration of an analog video signal output control unit 14 in FIG. 1 according to the first embodiment.

FIG. 4 is a diagram showing a detailed configuration of an analog video signal output control unit 14 in FIG. 1 according to the second embodiment.

FIG. 5 is a diagram showing a detailed configuration of analog video signal output control means 14 in FIG. 1 according to the third embodiment.

FIG. 6 is a diagram showing a detailed configuration of an analog video signal output control means 14 in FIG. 1 according to the fourth embodiment.

FIG. 7 is a diagram showing the configuration of a conventional system that digitizes video, audio, and data, and converts what is sent out through a transmission line from digital to analog and displays it.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 signal source 2 source encoding means 3 multiplexing means 4 channel encoding means 5 program-related information generating means 6 information generating means 7 transmission path 8 channel decoding means 9 demultiplexing means 10 source decoding means 11 information synthesizing means 12 signal output device 13 program Related information processing means 14 Analog video signal output control means

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04N 5/445

Claims (5)

[Claims] 1. A program including video, audio, and data, program-related information that is information related to the program, and an analog video signal indicating whether a video included in the program can be output as an analog signal by a receiving device. A broadcast signal transmission method for multiplexing and transmitting output control information. 2. A program including video, audio, and data, program-related information that is information related to the program, and an analog video signal indicating whether a video included in the program can be output as an analog signal by a receiving device. A receiving apparatus for receiving a broadcast signal in which output control information is multiplexed and transmitted, comprising: means for controlling an analog video signal output based on the multiplexed and transmitted analog video signal output control information. Receiving device. 3. A program including video, audio, and data, program-related information that is information related to the program, and an analog video signal indicating whether or not a video included in the program can be output as an analog signal by a receiving device. What is claimed is: 1. A receiving apparatus for receiving a broadcast signal in which output control information is multiplexed and transmitted, wherein a viewer is provided instead of outputting an analog video signal based on the multiplexed and transmitted analog video signal output control information. Receiving means for presenting information indicating that the video of the corresponding program is not output. 4. A program including video, audio, and data, program-related information that is information related to the program, and an analog video signal indicating whether a video included in the program can be output as an analog signal by a receiving device. A receiving apparatus for receiving a broadcast signal in which output control information is multiplexed and transmitted, wherein the analog video signal is transmitted in a video format based on the multiplexed and transmitted analog video signal output control information. A receiving apparatus comprising: means for converting a transmitted video into a video format different from the video format and outputting an analog video signal instead of outputting a signal. 5. A program including video, audio, and data, program-related information that is information related to the program, and an analog video signal indicating whether a video included in the program can be output as an analog signal by a receiving device. A receiving apparatus for receiving a broadcast signal in which output control information is multiplexed and transmitted, wherein the analog video signal is transmitted in a video format based on the multiplexed and transmitted analog video signal output control information. A means for converting to a video format different from the video format of the transmitted video instead of outputting the signal and outputting an analog video signal, and the video of the corresponding program can be output to the viewer based on the analog video signal output control information A receiving device comprising means for presenting information about a specific video format.