JPH09200158A - Digital broadcast system, its transmitter and receiver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To send data and broadcast data in well matching stipulated in the reports Nos.83, 44, 53 in the satellite digital broadcast scheduled to be in service based on the report No.74 with respect to the inquiry of the Moving Picture Experts Group. SOLUTION: In the case of making data broadcast in the digital broadcast system, a broadcast station side encodes data of layer 2 of data broadcast in compliance with the Packetized Elementary System(PES) or SECTION of layer 5 in digital broadcast and broadcasts the resulting data, and a receiver side extracts and decodes the data of the layer 2 of data broadcast from the received PES or SECTION data of the layer 5 of digital broadcast.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a broadcasting system using a wireless terrestrial wave, a broadcasting satellite or a communication satellite, a CATV network, etc., and more particularly to a transmitter and a receiver for data broadcasting in digital broadcasting.

[0002]

2. Description of the Related Art In recent years, video / audio digital signal processing technology has made remarkable progress, and along with this, system development has been actively carried out in various countries around the world in order to realize digital broadcasting and the integration of broadcasting and communication. It was

[0003] Among these, one of the most important technologies is video / video.
This is audio compression technology.

The compression techniques are MPEG, JPEG, H.264. 2
61 was the main place, but ISO / IEC13818
(Moving Picture Coding Experts Group: ISO / I
The system proposed in EC-JTC1 / SC29 / WG11) is being studied for global standardization of broadcasting, communication, and storage media.

[0005] ISO / IEC13818 is for not only the video compression method but also for multiplexing and compressing a bit stream compressed for each video data, audio data and information data of a program, and for receiving a specified program on the receiver side. The system is also solidified for the control part.

The structure in multiplexing control of a broadcasting bit stream of ISO / IEC13818-1 is described in Question 74.
No. “Technical conditions related to digital broadcasting system”, and in the OSI layer (layer structure of digital broadcasting system and outline of processing in each layer) shown in FIG.
It corresponds to the layers 3 to 6. FIG. 20 shows the configuration. 20 shows a layered model of a broadcast interface using the MPEG-2 system.

19 and 20, the layer 6 is an elementary stream (ES).
, Which defines data itself such as data compressed by ISO / IEC13818. Layer 5 is the above compressed data (1 frame of data in the video signal)
Packetized Elementar Stream (PES: Packetized Elementar)
y Stream) is defined as data.

The layer 4 is basically composed of 18 PES data.
1 divided into 4 bytes and attached with a 4-byte header
It defines a transport stream packet (TSP) of 88 bytes. Layer 3 defines a transport stream (TS: Transport Stream) created by collecting the above various TSPs.

As an example of packetization, FIG. 21 shows a model of one system of video data, one system of audio data, and additional (information) data 1.

First, one frame of video data and audio data are divided into units of each frame, and a header is added to the frame to form a PES. This PES has a variable length. The additional data is divided into lengths defined by the section format defined by ISO / IEC13818, and a section is formed with a header.

Subsequently, each PES created as described above
And section data are basically divided into 184 bytes and packetized, and the header is divided into 4 bytes.
In addition, a 188-byte TP (Transport Packet) is formed. As a result, video data, audio data, and additional data can be time-multiplexed.

On the other hand, the character multiplex broadcasting is defined by the No. 83 report, and the satellite data broadcasting is defined by the No. 44 report and the No. 53 report. 22 shows a hierarchical structure of character multiplex broadcasting, and FIG. 23 shows a hierarchical structure of satellite data broadcasting.

In the character multiplex broadcasting shown in FIG. 22, Layer 6 defines an 8 unit basic coding system and a transparent mode coding system as a presentation. Layer 5 defines the format structure of program management data and page data as a session (program). Layer 4 defines the format structure of the data group in the transport (transmission side).

Layer 3 defines the data packet structure on the network (SI is service identification, GI
Is a continuity index, TF is a transmission control flag, and IF is an error detection code section identification flag). Layer 2 defines the format of the data line in the link. Layer 1 defines the signal format on the transmission path.

On the other hand, in the satellite data broadcast shown in FIG. 23, the layer 6 defines coding conventions for presentations for each signal. Layer 5 defines, for each signal, the structure and type of data in the session (program) (however, the signal encoding method is the transmission control data (T
CD) specified).

Layer 4 defines the format structure of the data group in the transport (transmission side) (DGI is data group identification, DGR is data group continuous transmission, DGL is data group link, DGC is data group serial number, (DGS represents the data group size, and DGN represents the data group update). Layer 3 defines the format structure on the network (LC
I1 is a logical channel identification flag 1, LCI2 is a logical channel identification flag 2, SCC is scramble control, CI is a continuity index, and DTC is data group control).

Layer 2 defines the packet structure on the link. Layer 1 is standard television broadcasting (NTSC) and high definition television broadcasting (MUS) on the transmission path.
Each data channel in E) is specified.

Further, in satellite data broadcasting, as shown in FIG. 24, TCD (transmission control data: variable length) and time information data for identifying each coding in layer 5 are defined.

[0019] By the way, in satellite digital broadcasting scheduled to provide services based on the No. 74 report, No. 83, No. 44,
It is considered to incorporate the data broadcasting specified in the No. 53 report (generally called telesoft). However, the report No. 74 does not stipulate that the data broadcasting data stipulated in the report Nos. 83, 44, and 53 should be matched and transmitted in satellite digital broadcasting.

[0020]

As described above, a signal of a data broadcast conventionally represented by intertext is multiplexed and broadcast in a digital broadcast so that the receiving side can easily convert the data. It is demanded that the receiving side devises a specific specification that enables separation of data of data broadcasting and use of an existing decoder.

The present invention has been made in order to solve the above-mentioned problems, and in the satellite digital broadcasting scheduled to be served based on the above-mentioned No. 74 report, Nos. 83, 44, 5
Data broadcasting data specified in Report No. 3 can be sent with good consistency, so that data broadcasting signals represented by Intertext can be easily converted by the receiving side even in digital broadcasting. Multiplex and broadcast,
It is an object of the present invention to provide a digital broadcasting system capable of separating data of data broadcasting on the receiving side and using an existing decoder, and a transmitter and a receiver thereof.

[0022]

In order to solve the above-mentioned problems, the digital broadcasting system according to the present invention provides (1) data broadcasting data specified in No. 83, No. 44 and No. 53 reports in the OSI layer Format it in the 3rd or 2nd layer and match it with the 5th layer in the 74th report.

(2) The TCD data of the data broadcast data specified in the No. 83, No. 44, and No. 53 reports are converted into the section data of the No. 74 report.

(3) The TCD data of the data broadcasting data defined by the No. 83, No. 44, and No. 53 reports are assigned to the PES or section data of the No. 74 report.

(4) The time signal code of the data broadcasting data defined by the No. 83, No. 44, and No. 53 reports is converted into the section data of the No. 74 report.

(5) The time signal code of the data broadcast data defined by the No. 83, No. 44, and No. 53 reports is converted into the time information in the PES header of the No. 74 report.

(6) The time signal code of the data broadcast data defined by the No. 83, No. 44, and No. 53 reports is assigned to the PES or section data of the No. 74 report.

Specifically, it is constructed as follows.

(System) (1) In a transmission / reception system for data broadcasting in digital broadcasting, on the broadcasting station side, the data of the OSI layer second layer of the data broadcasting is matched with the PES or SECTION of the digital broadcasting OSI layer fifth layer. Encoded and broadcasted, and on the receiver side, the OS of the received digital broadcast
It is characterized in that the data of the OSI layer second layer of the data broadcast is extracted from the PES or SECTION data of the I layer fifth layer and decoded.

(2) In the system of the first item, on the broadcast station side, when the data of the OSI layer second layer of the data broadcast is sent by the PES of the OSI layer fifth layer of the digital broadcast,
Based on the time information shown in the header of the PES data of the other OSI layer fifth layer of the digital broadcast, the time information is given in the PES header and encoded and broadcast.
Based on the time information indicated in the header of the received PES data of the OSI layer 5th layer of the digital broadcast, the O of the data broadcast is transmitted.
It is characterized in that the data of the second layer of the SI layer is decoded or displayed.

(3) In the data broadcasting transmission / reception system for digital broadcasting, the broadcasting station side encodes the data of the third layer of the OSI layer of the data broadcasting by matching it with the PES or SECTION of the fifth layer of the OSI layer of the digital broadcasting. Broadcasting and on the receiver side, PES or SECT of the OSI layer 5th layer of the received digital broadcasting
It is characterized in that the data of the third layer of the OSI layer of the data broadcast is extracted from the ION data and decoded.

(4) In the system of the third item, on the broadcast station side, when the data of the third layer of the OSI layer of the data broadcast is sent by the PES of the fifth layer of the OSI layer of the digital broadcast, the other of the digital broadcast Based on the time information shown in the header of the PES data of the OSI layer 5th layer, the time information PE
The header of S is encoded and broadcast, and on the receiver side, the PE of the OSI layer fifth layer of the received digital broadcast is received.
It is characterized in that the data of the OSI layer third layer of the data broadcast is decoded or displayed based on the time information shown in the header of the S data.

(5) In the transmission / reception system for data broadcasting in digital broadcasting, on the broadcasting station side, the data corresponding to the TCD data of the OSI layer fifth layer of the data broadcasting is converted into the data of the SECTION format of the OSI layer fifth layer of the digital broadcasting. It is characterized in that the data of the data broadcast is received and decoded on the basis of the SECTION format data sent from the receiver side.

(6) In the data broadcasting transmission / reception system for digital broadcasting, on the broadcasting station side, data corresponding to TCD data of the OSI layer fifth layer of the data broadcasting is transferred to the OSI layer third layer or the second layer of the data broadcasting. After conversion, the digital broadcast is broadcast in the PES or SECTION format of the fifth layer of the OSI layer, and the receiver side receives and decodes the data of the data broadcast based on the TCD data sent. .

(7) In the data broadcasting transmission / reception system for digital broadcasting, the broadcasting station side sends the data corresponding to the time information data of the data broadcasting to the OS of the digital broadcasting.
It is characterized in that it broadcasts in the SECTION format of the I layer and the fifth layer, and the receiver side receives and decodes the data broadcast data based on the time information data sent.

(8) In the data broadcasting transmission / reception system for digital broadcasting, on the broadcasting station side, the data corresponding to the time information data of the data broadcasting is transferred to the O of the digital broadcasting.
The SI layer, the fifth layer, is broadcast by replacing it with the time information of the PES header of the data broadcast that is broadcast in the PES format, and the receiver side receives the data of the data broadcast based on the time information of the PES header sent. , Decoding processing is characterized.

(9) In the data broadcasting transmission / reception system for digital broadcasting, on the broadcasting station side, the data corresponding to the time information data of the data broadcasting is sent to the OS of the data broadcasting.
After converting to I layer 3 layer or 2 layer, it broadcasts in the PES or SECTION format of the 5th layer of digital broadcasting, and the receiver side receives the data broadcast data based on the sent time information data. , Decoding processing is characterized.

(10) The data broadcasting system of the items 1 to 9 is limited to an intertext data transmitting / receiving system.

(Transmitter) (11) In a data broadcasting transmission system for digital broadcasting, the data of the second layer of the OSI layer of the data broadcasting is encoded by being matched with the PES or SECTION of the fifth layer of the OSI layer of the digital broadcasting, and then broadcast. It is characterized by doing.

(12) In the system of the above item 11, when the data of the OSI layer 2nd layer of the data broadcast is sent by the PES of the OSI layer 5th layer of the digital broadcast, another OSI layer 5th layer of the digital broadcast is sent. Based on the time information indicated in the header of the PES data, the PES header is provided with the time information and encoded and broadcast.

(13) In the data broadcasting transmission system for digital broadcasting, the data of the OSI layer third layer of the data broadcasting is transferred to the P of the OSI layer fifth layer of the digital broadcasting.
It is characterized by being encoded and broadcast in conformity with ES or SECTION.

(14) In the system of the above item 13, when the data of the OSI layer third layer of the data broadcast is sent by the PES of the OSI layer fifth layer of the digital broadcast, the other OSI layer fifth layer of the digital broadcast is sent. Based on the time information indicated in the header of the PES data, the PES header is provided with the time information and encoded and broadcast.

(15) In a data broadcasting transmission system for digital broadcasting, the data corresponding to the TCD data of the OSI layer fifth layer of the data broadcasting is replaced with the data of the SECTION format of the OSI layer fifth layer of the digital broadcasting and broadcast. It is characterized by

(16) In the data broadcasting transmission system for digital broadcasting, the data corresponding to the TCD data of the fifth layer of the OSI layer of the data broadcasting is transferred to the O of the data broadcasting.
After converting to SI layer 3rd layer or 2nd layer, PES or SECTIO of OSI layer 5th layer of digital broadcasting
It is characterized by broadcasting in N format.

(17) A data broadcasting transmission system in digital broadcasting is characterized in that data corresponding to time information data of the data broadcasting is broadcast in the SECTION format of the OSI layer fifth layer of the digital broadcasting.

(18) In the data broadcasting transmission system for digital broadcasting, the data corresponding to the time information data of the data broadcasting is transferred to the OSI layer No. 5 of the digital broadcasting.
It is characterized in that it is replaced with the time information of the PES header of the data broadcast to be broadcast in the PES format of the layer and broadcast.

(19) In the data broadcasting transmission system for digital broadcasting, after converting the data corresponding to the time information data of the data broadcasting to the OSI layer third layer or second layer of the data broadcasting, the fifth layer of the digital broadcasting is converted. PE
It is characterized by broadcasting in S or SECTION format.

(20) The data broadcasting system of the items 11 to 19 is limited to an intertext data transmission system.

(Receiver) (21) In a digital broadcast receiver, O of a data broadcast which is encoded by being matched with PES or SECTION of the OSI layer fifth layer of digital broadcast and broadcasted
It is characterized in that the data of the second layer of the SI layer is received.

(22) In the digital broadcast receiver according to the item 21, the data of the transmitted data broadcast is identified, extracted, and the data is accumulated and output if necessary. And

(23) In the digital broadcast receiver according to the above-mentioned item 21, the data of the transmitted data broadcast is identified, extracted, the data is accumulated as necessary, and the OSI layer of the data broadcast is stored. It is characterized in that it is output after being converted into the format of the first layer of.

(24) In the digital broadcast receiver according to the item 23, the data of the data broadcast is converted into the OSI of the data broadcast.
After being converted into the format of the first layer, the layer is output to an interface other than the video signal output.

(25) In the digital broadcast receiver of the above item 23, the data of the data broadcast is converted into the OSI of the data broadcast.
After being converted to the format of the first layer of the layers, it is multiplexed with the VBI of the video signal and outputted.

(26) In the digital broadcast receiver of the above item 21, the data of the data broadcast transmitted is identified and extracted, and the data is stored as necessary to be used for the data broadcast in the receiver. Input to the decoder, after decoding,
It is characterized by outputting as video or audio output.

(27) In the digital broadcast receiver according to the above item 26, the data of the decoded data broadcast is output in a system different from the output of the video or audio of the decoded digital broadcast.

(28) In the digital broadcast receiver of the above-mentioned item 21, the data of the transmitted data broadcast is identified, extracted, the data is accumulated as necessary, and the video is decoded after software decoding. It is output as an output.

(29) In the digital broadcast receiver according to the item 28, the data of the decoded data broadcast is output in a system different from the output of the video or audio of the decoded digital broadcast.

(30) In the digital broadcast receiver of the above-mentioned item 21, the data of the OSI layer second layer of the received data broadcast, the time information included in the PES header, and the OSI layer of the digital broadcast sent separately. 4th layer TS
According to the system clock information contained in the packet header, it is output to an output port different from the video or audio output.

(31) In the digital broadcast receiver of the above item 21, the data of the OSI layer second layer of the received data broadcast is converted into the data of the first layer, and the time information included in the PES header and the separate information are transmitted. Digital broadcasting O
According to the system clock information included in the TS packet header of the fourth layer of the SI layer, it is output to an output port different from the video or audio output.

(32) In the digital broadcast receiver of the above-mentioned item 21, the data of the OSI layer second layer of the received data broadcast is converted into the data of the first layer, and the time information included in the PES header and the separate information are transmitted. Digital broadcasting O
Based on the system clock information included in the TS packet header of the fourth layer of the SI layer, BVI multiplexing is performed in synchronization with the video data of the decoded digital broadcast, and the resultant is output.

(33) The OSI of the data broadcast received and decoded by the digital broadcast receiver according to the above item 21.
Layer 2nd layer data is synchronized with the video data of the digital broadcast decoded based on the time information included in the PES header, and is mixed and displayed or output, or
The data of the OSI layer second layer of the received and decoded data broadcast is switched and displayed or output in synchronization with the decoded video data of the digital broadcast based on the time information included in the PES header. To do.

(34) In a digital broadcast receiver,
Digital broadcasting OSI layer 5th layer PES or S
It is characterized in that it receives the data of the third layer of the OSI layer of the data broadcast which is encoded and matched with ECTION.

(35) In the digital broadcast receiver of the above item 34, the data of the transmitted data broadcast is identified and extracted, and the data is accumulated and output as necessary. To do.

(36) In the digital broadcast receiver of the above item 34, the data of the data broadcast transmitted is identified, extracted, and the data is accumulated as necessary, and the OSI layer of the data broadcast is stored. It is characterized in that it is output after being converted into the format of the second layer.

(37) In the digital broadcast receiver according to the above item 34, the data of the transmitted data broadcast is identified and extracted, and the data is stored as necessary to store the data in the OSI layer of the data broadcast. It is characterized in that it is output after being converted into a format in the order of the second layer and the first layer.

(38) In the digital broadcast receiver according to the above item 37, the data of the data broadcast is transferred to the OSI of the data broadcast.
After being converted into a format in the order of the second layer of the layer and the first layer, it is output to an interface different from the output of the video or audio signal.

(39) In the digital broadcast receiver according to the above item 37, the data of the data broadcast is transferred to the OSI of the data broadcast.
After being converted into a format in the order of the second layer of the layer and the first layer, it is multiplexed with VBI of the video signal and outputted.

(40) In the digital broadcast receiver according to the above item 34, the data broadcast data transmitted is identified and extracted, and the data is accumulated as necessary, and the data broadcast decoder in the receiver is provided. It is characterized in that it is input to, and after decoding, is output as video or audio output.

(41) In the digital broadcast receiver according to the item 40, the data of the decoded data broadcast is output in a system different from the output of the video or audio of the decoded digital broadcast.

(42) In the digital broadcast receiver of the above-mentioned item 34, the data of the transmitted data broadcast is identified, extracted, the data is accumulated if necessary, and the video is decoded after software decoding. Alternatively, it is output as an audio output.

(43) In the digital broadcast receiver according to the item 42, the data of the decoded data broadcast is output in a system different from the output of the video or audio of the decoded digital broadcast.

(44) In the digital broadcast receiver according to the above item 34, the data of the OSI layer third layer of the received data broadcast, the time information included in the PES header, and the OSI layer of the digital broadcast sent separately. 4th layer TS
According to the system clock information contained in the packet header, it is output to an output port different from the video or audio output.

(45) In the digital broadcast receiver according to the above item 34, the data of the OSI layer third layer of the received data broadcast is converted into the data of the second layer, and the time information contained in the PES header is transmitted separately. Digital broadcasting O
According to the system clock information included in the TS packet header of the fourth layer of the SI layer, it is output to an output port different from the video or audio output.

(46) In the digital broadcast receiver according to the above item 34, the data of the OSI layer third layer of the received data broadcast is converted into data in the order of the second layer and the first layer, and P
Based on the time information contained in the ES header and the system clock information contained in the TS packet header of the OSI layer 4th layer of the digital broadcast, which is sent separately, the data is output to an output port different from the video or audio output. It is characterized by

(47) In the digital broadcast receiver according to the above item 34, the data of the OSI layer third layer of the received data broadcast is converted into data in the order of the second layer and the first layer, and P
Based on the time information included in the ES header and the system clock information included in the TS packet header of the OSI layer 4th layer of the digital broadcast, which is separately sent, BVI multiplexing is performed in synchronization with the decoded digital broadcast video data. And output.

(48) The OSI of the data broadcast received and decoded by the digital broadcast receiver of the above item 34.
Layer 3rd layer data is synchronized with the video data of the digital broadcast decoded based on the time information included in the PES header, and is mixed and displayed or output, or
The data of the OSI layer third layer of the received and decoded data broadcast is switched and displayed or output in synchronization with the video data of the decoded digital broadcast based on the time information included in the PES header. To do.

(49) In a digital broadcast receiver,
It is characterized in that the data corresponding to the TCD data of the fifth layer of the data broadcasting which has been broadcast by being replaced with the SECTION format of the fifth layer of the digital broadcasting is received.

(50) In the digital broadcasting receiver according to the above item 49, the TCD data of the transmitted data broadcast is identified, extracted, converted into the TCD data of the original data broadcast, and the data is transmitted if necessary. Is stored and output.

(51) In the digital broadcast receiver of the above item 49, after being converted into the TCD data of the original data broadcast, the third layer or the second layer of the OSI layer of the data broadcast
After converting to the layer or the first layer in the layer order,
It is characterized in that the data is accumulated and output as necessary.

(52) In the digital broadcast receiver according to the above item 51, the transmitted TCD data of the data broadcast is transferred to the third layer or the second layer of the OSI layer of the data broadcast,
Alternatively, it is characterized in that after the format conversion up to the first layer in order of layers, it is output to an interface different from the video or audio signal output.

(53) In the digital broadcast receiver according to the above item 51, the transmitted TCD data of the data broadcast is transferred to the third layer or the second layer of the OSI layer of the data broadcast,
Alternatively, it is characterized in that after the format conversion up to the first layer in order of layers, it is multiplexed with the VBI of the video signal and outputted.

(54) In the digital broadcasting receiver according to the above item 49, the TCD data of the transmitted data broadcasting is identified, extracted, the data is stored as necessary, and the data broadcasting in the receiver is carried out. Input to the decoder for
It is characterized in that the data of the data broadcast is decoded based on the CD data and then output as a video output.

(55) In the digital broadcast receiver of the above-mentioned item 49, the transmitted intertext TCD data is identified, extracted, the data is accumulated as necessary, and the TCD data is used as the basis. A feature of the present invention is that the data of the data broadcast is output as a video output after software decoding.

(56) In a digital broadcast receiver,
It is characterized in that the data of the data broadcast is received based on the data corresponding to the time information data of the data broadcast which has been broadcast by being replaced with the SECTION format of the fifth layer of the digital broadcast.

(57) In the digital broadcast receiver according to the item 56, the time information data of the transmitted data broadcast is identified, extracted and output.

(58) In the digital broadcast receiver according to the above item 56, the time information data converted into the original time information is converted into the third or second layer of the OSI layer of the data broadcast,
Alternatively, it is characterized in that the first layer is converted into a format in order of layers and then output.

(59) In the digital broadcast receiver of the above-mentioned item 58, the time information data converted into the original time information is converted into the third layer of the OSI layer of the data broadcast, or the second layer.
It is characterized in that after the format is converted into layers or the first layer in order of layers, it is output to an interface different from the output of the video or audio signal.

(60) In the digital broadcast receiver according to the above item (58), the time information data converted into the original time information is format-converted to the first layer of the OSI layer of the data broadcast in the layer order, and then the VBI of the video signal output is converted. It is characterized in that it is multiplexed and output.

(61) In the digital broadcast receiver according to the item 56, the time information data converted into the original time information is input to the data broadcast decoder in the receiver, and the data broadcast is performed based on the time information data. After decoding the data of
It is characterized by outputting as a video or audio signal.

(62) In the digital broadcast receiver of the above-mentioned item 56, the data of the data broadcast is software-decoded based on the time signal code converted into the original time information and then output as a video or audio signal. Characterize.

(63) The data broadcasting system of the items 21 to 62 is limited to an intertext data transmitting / receiving system.

(64) The digital broadcast receiver is characterized by being provided with a tuner for terrestrial or satellite or CATV analog broadcasting.

(65) In the digital broadcast receiver according to the 64th paragraph, the signal sent in the analog broadcast and the signal sent in the digital broadcast are decoded, and one of the signals is given priority. It is characterized by being provided and outputting.

(66) In the digital broadcast receiver according to the item 64, the signal sent in the analog broadcast and the signal sent in the digital broadcast are decoded, mixed and output. And

(67) In the digital broadcast receiver according to the item 64, the signal transmitted in the analog broadcast and the signal transmitted in the digital broadcast are decoded and output in different systems. And

(68) The digital broadcasting receiver according to item 64 is characterized by comprising a monitor and a speaker.

(69) In the digital broadcast receiver according to paragraph 68, the signal sent in the analog broadcast and the signal sent in the digital broadcast are decoded, and one of the signals is given priority. It is characterized in that it is provided and displayed on the monitor or output to the speaker.

(70) In the digital broadcast receiver according to the 68th paragraph, the signal sent in the analog broadcast and the signal sent in the digital broadcast are decoded and mixed to be mixed with the monitor or the speaker. It is characterized by outputting to.

(71) In the digital broadcast receiver according to item 68, the signal sent in the analog broadcast and the signal sent in the digital broadcast are decoded and output in two systems on the monitor. It is characterized by

(72) In the digital broadcast receiver according to the 68th paragraph, the signal transmitted in the analog broadcast and the signal transmitted in the digital broadcast are decoded and any one system is displayed on the monitor. It is characterized by outputting one system to the outside.

(73) The data broadcasting system of the items 64 to 72 is limited to an intertext data transmitting / receiving system.

(74) When the digital broadcast receiving device or the data broadcast receiving device receives a service having a time limit, information about the time limit is displayed on the monitor screen based on the time information transmitted. The feature is to display the countdown value or to inform the user of information regarding the time limit, especially the countdown value, by voice.

[0103]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

First, as an example of the digital broadcasting system according to the present invention, a seven-layer model of the terrestrial data broadcasting VBI system is shown in FIG.

Layer 7 defines an application for each service and program (satellite broadcasting station, broadcasting channel, data broadcasting company and program number are transmission control (TC
Specified in D)). Layer 6 defines the coding conventions for presentation (presentation) for each signal. Layer 5 defines the data structure, type, etc. of a session (program) for each signal (the signal encoding method is specified by transmission control data (TCD)).

Layer 4 defines the format structure of the data group in the transport (transmission side) (DG
The configuration is specified by transmission control data (TCD)). Here, the data group is a group of data of data blocks and has a variable length.

More specifically, there is a data group header at the head, and following this, data group data DD1 ... And an error detection code (CRC) are arranged. In the case of the DG configuration 1, the data group header has the above-mentioned DGI1 (4 bits), DGR (4 bits), DGL (1 bit), DG.
It is composed of C (7 bits) and DGS (24 bits).
In the case of the DG configuration 2, the DGI2 (7 bits) and DGN (1 bit) described above are used.

As described above, layers 4 to 7 comply with the structure of satellite data broadcasting. However, the transmission control data and the time signal are partially changed.

Subsequently, the layer 3 defines the format structure of the data packet on the network (the pay method is used for SCC, the layer 4 is used for DTC, the logical channel is specified by the transmission control data (TCD)).

More specifically, a 14-bit packet prefix (PF) is placed at the beginning, followed by 176-bit (22 bytes) data blocks DB1 to DB22. The PF has the above-mentioned LCI2 (6 bits), S
CC (2 bits), CI (4 bits), and DTC (2 bits) are arranged.

In layer 3, the structure of the packet prefix part of the satellite data broadcast is partially changed to match the bit number of the prefix part of the character multiplex broadcast. The data block complies with the structure of satellite data broadcasting.

Layer 2 defines the format of the data line on the link. This data line is composed of data blocks B1 to B37, and serves as a synchronization unit.
A 190-bit data block and a 82-bit check code data packet are arranged at the beginning of a bit clock run-in (CR) and an 8-bit framing code (FC).

Layer 1 defines the transmission method of VBI method data signals on the transmission path. Here, the intertext data signal is multiplexed and transmitted during the vertical blanking period of the video signal. As described above, the layers 1 and 2 comply with the configuration of the character multiplex broadcasting.

FIG. 2 shows the data group (a) of the layer 4 and the packet structure 1 (b) of the layer 3 in the report No. 83.
Through the interface between the MPEG decoder and the data broadcasting decoder defined in SO / IEC13818, 7
Tier 4 PES (c) and Tier 4 TS in Report No. 4
It shows how P (d) is incorporated.

Further, in FIG. 3, the ISO / IE is added to the data group (a) of layer 4, data packet (b) of layer 3, and data line (c) of layer 2 in the No. 83 report.
It shows a state in which the PES (c) of the layer 5 and the TSP (d) of the layer 4 in the No. 74 report are incorporated through the interface of the MPEG decoder and the data broadcast decoder defined in C13818.

Embodiments of the transmitter and the receiver of the digital broadcasting system constructed based on the above hierarchical model will be described below.

(First Embodiment) FIG. 4 shows, as a first embodiment of the present invention, a block configuration of a transmitting apparatus for generating a stream of one transmission channel. This transmitter is an MPEG multiple encoder 100,
It is composed of an intertext multiple encoder 200 and a comprehensive multiple encoder 300.

First, in the MPEG multiple encoder 100, the video data input through the line 101 is
The video compression encoder 102 encodes in real time, the FIFO memory 103 adjusts the timing, and the packetizing circuit 104 converts the packet into a fixed-length packet and holds it in the memory 105.

In the above process, the video compression encoder 102, the FIFO memory 103, and the packetizing circuit 104 may be processed by replacing the encoded data with a stored database.

Similarly, the audio data input through the line 106 is encoded in real time by the audio compression encoder 107, the timing is adjusted by the FIFO memory 108, and then converted into a fixed length packet by the packetizing circuit 109. It is held in the memory 110.

In the above process, the audio compression encoder 107, the FIFO memory 108, and the packetizing circuit 109 may be processed by replacing the encoded data with a stored database.

Similarly, the control data related to the video and audio data input through the line 111 is encoded in real time by the control data encoder 112, the timing is adjusted by the FIFO memory 113, and then the packetizing circuit 114. It is converted into a fixed-length packet and stored in the memory 115.

In the above process, the control data encoder 112, the FIFO memory 113, and the packetizing circuit 114 may be processed by replacing the encoded data with an accumulated database.

The memories 105, 110, 11 for holding the various data encoded and packetized as described above.
Packet 5 is read-controlled by the packet multiplexing controller 116, which monitors the occupied amount, so that overflow and underflow do not occur. Each memory 1
The data read from 05, 110, and 115 are both sent to the memory 301 of the general multiplex encoder 300.

Next, the intertext multiple encoder 2
At 00, telesoft data input through the line 201 is data-converted in real time by the data converter 202, timing-adjusted by the FIFO memory 203, and then converted into a fixed-length packet by the packetizing circuit 204 and stored in the memory. Held in 205.

In the above process, the telesoft data means character information and the like, and means arbitrary data of layer 6 in report No. 44, report No. 53 and report No. 83 of the data broadcast shown in FIG. .

Further, in the data converter 202, the data conversion from the level 6 to the level 3 or level 2 of the report No. 83 shown in FIG. 1, FIG. 2 or FIG. 3 and the data conversion to the level 5 of the report No. 74 are performed. Done. Further, in the packetizing circuit 204, data conversion to the layer 4 of the No. 74 report shown in FIGS. 2 and 3 is performed.

At this time, the input telesoft data is decoded and displayed by the decoder on the receiver side.
For data that does not require output timing control,
The data converter 202 may convert up to the layer 4 of the No. 74 report shown in FIG. 2 or FIG. 3, and directly store it in the memory 205.

In the data converter 202, the FIFO memory 203, and the packetizing circuit 204, the data obtained by converting all of the No. 83 report layer 6 to the No. 74 report layer 4 shown in FIGS. The stored database may be replaced and processed.

Similarly, the time information data input through the line 206 is converted in real time by the data converter 207, the timing is adjusted in the FIFO memory 208, and then converted into a fixed length packet by the packetizing circuit 209. And stored in the memory 210.

In the above process, the time information data means the information indicating the time.
Not only the current time, but also a time limit required when the receiving device processes a service in intertext broadcasting, a time difference from the current time, a service end time, and the like can be considered.

Further, in the data converter 207, data conversion from the layer 6 of the report No. 83 to the layer 3 or the layer 2 shown in FIG. 1, 2 or 3 and the data to the layer 5 of the report No. 74 are carried out. The conversion is done. Further, in the packetizing circuit 209, data conversion to the layer 4 of the No. 74 report shown in FIGS. 2 and 3 is performed.

Similarly, the TCD data (see FIG. 24) input through the line 211 is converted in real time by the data converter 212, the timing is adjusted by the FIFO memory 213, and then the fixed length is set by the packetizing circuit 214. Memory 215
Is held.

In the above process, the data converter 212 performs data conversion from layer 5 to layer 3 or layer 2 of report No. 83 shown in FIG. 1, 2 or 3.
The data conversion of the No. 74 report to the layer 5 is performed. Further, in the packetizing circuit 214, 7 shown in FIGS.
Data conversion to Tier 4 of No. 4 report is performed.

At this time, if the input TCD data is data which does not require control of the decode timing in the decoder on the receiving device side, the data converter 212 uses the No. 74 report layer 4 shown in FIG. 2 or 3. It may be configured such that the data is converted up to and directly stored in the memory 215.

Further, the data converter 212, the FIFO memory 213 and the packetizing circuit 214 all perform the conversion from the No. 83 report layer 5 to the No. 74 report layer 4 shown in FIGS. 1, 2 and 3. The stored data may be replaced with a stored database for processing.

Similarly, the control data input through the line 216 is data relating to the above telesoft data, time information data and TCD data, which is encoded in real time by the control data encoder 217 and adjusted in timing by the FIFO memory 218. After that, the packetization circuit 219 converts the packet into a fixed-length packet and holds it in the memory 220.

In the above process, the control data encoder 217, the FIFO memory 218 and the packetizing circuit 219 may be processed by replacing the encoded data with a stored database.

Memories 205, 210 and 21 for holding various data encoded and packetized as described above.
The packets 5 and 220 are read-controlled by the packet multiplex controller 221 that monitors the respective occupancy so that overflow and underflow do not occur. The data read from each of the memories 205, 210, 215, and 220 are both stored in the memory 3 of the general multiplex encoder 300.
Is sent to 02.

In the comprehensive multiple encoder 300, the MP
Data from the EG multiple encoder 100 is stored in the memory 301.
And the data from the intertext multiplex encoder 200 is held in the memory 302. Then, by the total packet multiplexing controller 304, the memory 301,
The stream 302 is controlled so as not to cause an underflow or overflow, and stream data is transmitted through the line 305.

At this time, the total control data encoder 303
I to control stream data comprehensively by
PAT and CA specified in SO / IEC13818
Control data represented by T is created. This control data is time-multiplexed with the above data stream in the data format of No. 74 report layer 4 shown in FIG.

As can be seen from the above description, according to the transmitting device having the above-mentioned configuration, in the satellite digital broadcasting scheduled to be serviced based on the report No. 74, the report No. 83,
It is possible to send the data broadcasting data specified by the No. 44 report and the No. 53 report with good consistency.

(Second Embodiment) FIG. 5 shows, as a second embodiment of the present invention, another block configuration of a transmitting apparatus for generating a stream of one transmission channel. However, in FIG. 5, the same parts as those in FIG. 4 are denoted by the same reference numerals, and the duplicate description is omitted here.

This transmitting apparatus is composed of MPEG & intertext multiple encoders 400 and 500 and a total multiple encoder 300. Incidentally, the encoders 400, 5
Since 00 has the same configuration, the internal configuration of 500 is not shown.

The MPEG & intertext multiple encoder 400 is a combination of the MPEG multiple encoder 100 of the first embodiment and the intertext multiple encoder 200.

Video data input through the line 401 is encoded in real time by the video compression encoder 302, adjusted in timing by the FIFO memory 403, converted into fixed length packets by the packetizing circuit 404, and stored in the memory 405. Retained.

Here, at the time of real-time encoding of the video compression encoder 402, when the PES shown in FIG.
TS) is added based on the time obtained from the time management device 432. Further, in the packetizing circuit 404, the system clock information (PCR) to be included in the header portion when the TS packet shown in FIG. 1 is constructed is added based on the time obtained from the time management device 432.

In the above process, the video compression encoder 402, the FIFO memory 403, and the packetizing circuit 404 may be processed by replacing the encoded data with a stored database. However,
The time information (DTS, PTS) and system clock information (PCR) need to be added again based on the time management device 432.

The audio data input through the line 406 is encoded in real time by the audio compression encoder 407, the timing is adjusted by the FIFO memory 408, and the packet data is converted into a fixed length packet by the packetizing circuit 409 and stored in the memory 410. Retained.

Here, in the real-time encoding of the audio compression encoder 407, when the PES shown in FIG. 1 is constructed, the time information (DTS, PT) to be included in the header portion is included.
S) is added based on the time obtained from the time management device 432. In the packetizing circuit 409,
System clock information (PCR) that may be included in the header part when the TS packet shown in FIG. 1 is constructed.
Is added based on the time obtained from the time management device 432.

In the above process, the voice compression encoder 407, the FIFO memory 408, and the packetizing circuit 409 may be processed by replacing the encoded data with a stored database. However,
The time information (DTS, PTS) and system clock information (PCR) need to be added again based on the time management device 432.

The telesoft data input through the line 411 is data-converted by the data converter 412, adjusted in timing by the FIFO memory 413, converted by the packetizing circuit 414 into fixed length packets, and stored in the memory 415. Retained.

Here, in the data conversion of the data converter 412, the time information (DTS, PTS) to be included in the header part when the PES shown in FIG. 1 is constructed is based on the time obtained from the time management device 432. Is added.
In the packetizing circuit 414, the TS shown in FIG.
When constructing a packet, system clock information (PCR) that may be included in the header portion is added based on the time obtained from the time management device 432.

In the above process, the data converter 4
In 12, the conversion from the layer 5 of No. 83 report shown in FIG. 1, FIG. 2 or FIG. 3 to the layer 3 or layer 2 and the conversion of No. 74 report to layer 5 are performed. Further packetizing circuit 4
In No. 14, Level 4 of No. 74 report shown in FIGS. 2 and 3
Is converted to

In the above process, the data converter 412, the FIFO memory 413, and the packetizing circuit 414 may be processed by replacing the data-converted data with an accumulated database. However,
The time information (DTS, PTS) and system clock information (PCR) need to be added again based on the time management device 432.

The time information data input through the line 416 is data-converted by the data converter 417, the timing is adjusted by the FIFO memory 418, and then converted by the packetizing circuit 419 into a fixed length packet.

Here, in the data conversion of the data converter 417, the time information (DTS, PTS) put in the header part when the PES shown in FIG. 1 is constructed is added based on the time obtained from the time management device 432. To be done. Further, in the packetizing circuit 419, when the TS packet shown in FIG. 1 is constructed, the system clock information (PCR) that may be included in the header portion is the time management device 4.
It is added based on the time obtained from 32.

In the above process, the data converter 4
At 17, the conversion from the layer 5 of the report No. 83 to the layer 3 or layer 2 shown in FIG. 1, FIG. 2 or FIG. 3 and the conversion of the report No. 74 to the layer 5 are performed. Further packetizing circuit 4
19 is Level 4 of Report No. 74 shown in FIGS. 2 and 3.
Is converted to

Further, in the data converter 417, the FIFO memory 418 and the packetizing circuit 419, the data-converted data may be replaced with an accumulated database for processing. However, the time information (DTS, P
It is necessary to add TS) and system clock information (PCR) again based on the time management device 432.

The TCD data input through the line 421 is converted by the data converter 422,
After the timing is adjusted by the FIFO memory 423,
The packetizing circuit 424 converts the packet into a fixed-length packet and holds it in the memory 425.

Here, in the data conversion of the data converter 422, the time information (DTS, PTS) to be included in the header portion when the PES shown in FIG. 1 is constructed is added based on the time obtained from the time management device 432. To be done. However, if the TCD data is data that does not require time management, the section shown in FIG. 1 may be configured. Further, in the packetizing circuit 424, when the TS packet shown in FIG. 1 is constructed, the system clock information (PCR) that may be included in the header portion is the time management device 4.
It is added based on the time obtained from 32.

In the above process, the data converter 4
In 22, the conversion from the layer 5 of the report No. 83 to the layer 3 and the layer 2 shown in FIG. 1, 2 or 3 and the conversion of the report No. 74 to the layer 5 are performed. Further packetizing circuit 42
In No. 4, the No. 74 report shown in FIGS. 2 and 3 is converted into the hierarchy 4.

In the data converter 422, the FIFO memory 423 and the packetizing circuit 424, the data-converted data may be replaced with an accumulated database for processing. However, time information (DTS, PT
S), the system clock information (PCR) needs to be added again based on the time management device 432.

The control data input through the line 426 are the video data from the line 401, the audio data from the line 406, the telesoft data from the line 411, the time information data from the line 416, and the line 421.
Related to TCD data from (ISO / IEC138
18-1 is the data corresponding to the contents of PMT in 18-1, and the ISO / IEC13 in the control data encoder 427 is used.
818-1 is encoded in real time into the section data specified in 818-1. And the FIFO memory 4
After the timing is adjusted by 28, the packetizing circuit 4
At 29, it is converted into a fixed-length packet and held in the memory 430.

Here, in the packetizing circuit 429,
When constructing the TS packet shown in FIG. 2, system clock information (PCR) that may be included in the header part
Is added based on the time obtained from the time management device 432.

In the above process, the control data encoder 427, the FIFO memory 428 and the packetizing circuit 429 may be processed by replacing the encoded data with a stored database. However,
The system clock information (PCR) is the time management device 432.
Need to be added again based on.

Memories 405, 410, 41 for holding various packetized data encoded as described above.
The packets 5, 420, 425, 430 are read-controlled by the packet multiplexing controller 431, which monitors the respective occupancy, so that overflow and underflow do not occur. Each memory 405, 410, 415, 42
The data read from 0, 425, and 430 are both sent to the memory 302 of the integrated multiplex encoder 300.

The MPEG & intertext multiple encoder 500 also operates similarly to the encoder 400, and its output is sent to the memory 301 of the general multiple encoder 300. This comprehensive multiplex encoder 300 includes an encoder 50
The data from 0 is held in the memory 301, and the encoder 4
The data from 00 is held in the memory 302, and thereafter, the same operation as in the case of the first embodiment is performed.

As can be seen from the above description, the satellite digital broadcasting scheduled to be serviced based on the No. 74 report also defines the No. 83 report, No. 44 report, and No. 53 report by the transmitting device having the above-mentioned configuration. Data broadcasting data can be sent with good consistency.

(Third Embodiment) FIG. 6 shows another block configuration of a transmission apparatus for generating a stream of one transmission channel as a third embodiment of the present invention. However, in FIG. 6, the same parts as those in FIG. 4 are denoted by the same reference numerals, and the duplicate description is omitted here.

This transmitting apparatus is composed of an MPEG multiple encoder 100, an intertext multiple encoder 200, and a total multiple encoder 300, as in the first embodiment.

The MPEG multiple encoder 100 and the general multiple encoder 300 have the same configurations as in the first embodiment. The present embodiment is characterized in that the intertext multiple encoder 200 processes the telesoft data by including the time information data.

That is, the telesoft data and time information data input through the lines 201 and 206 are converted in real time by the data converter 202, the timing is adjusted by the FIFO memory 203, and then fixed by the packetizing circuit 204. It is converted into a long packet and stored in the memory 205.

In the above process, the telesoft data means character information or the like, and means arbitrary data of layer 6 in the No. 44 report, No. 53 report and No. 83 report of the data broadcast shown in FIG.

The data converter 202 shown in FIGS.
Alternatively, the conversion from the level 6 of the report No. 83 to the level 3 or the level 2 shown in FIG. 3 and the conversion of the report No. 74 to the level 5 are performed. At this time, the time information data input through the line 206 is the PES shown in FIGS. 2, 3, and 7.
It is reflected in the time information shown in the header of. Further, in the packetizing circuit 204, the No. 74 report shown in FIGS. 2 and 3 is converted into the layer 4.

Here, FIG. 7 shows ISO / IEC13818.
1 illustrates a relationship between a TSP (transport stream packet: 188 bytes) format configuration of −1 and a PES format configuration. TSP is a sink
A header (4 bytes) including bytes and PID, an adaptation field (variable length), and a payload are arranged in order, and the PES time-multiplexed with the payload is PT.
A PES header (variable length) including S and DTS and a payload are arranged in order.

Hereinafter, the processing regarding the TCD data and the control data and the processing by the encoders 100 and 300 are the same as those in the first embodiment, and even in this configuration,
In satellite digital broadcasting scheduled to be served based on the No. 74 report, the data broadcast data defined by the No. 83 report, the No. 44 report, and the No. 53 report can be transmitted with good consistency.

(Fourth Embodiment) FIG. 8 shows, as a fourth embodiment of the present invention, another block configuration of a transmitting apparatus for generating a stream of one transmission channel. However, in FIG. 8, the same parts as those in FIG. 4 are denoted by the same reference numerals, and the duplicate description is omitted here.

This transmitting apparatus is composed of an MPEG multiple encoder 100, an intertext multiple encoder 200, and a total multiple encoder 300, as in the first embodiment.

First, the MPEG multiple encoder 100 and the total multiple encoder 300 have the same configurations as those of the first embodiment. The present embodiment is characterized in that the intertext multiple encoder 200 processes TCD data when encoding control data.

That is, the processing of the telesoft data input through the line 201 and the processing of the time information data input through the line 206 are the same as those in the first embodiment.

The TCD data (see FIG. 24) and the control data (the above telesoft data, the time information data and the control data related to the TCD data) input through the lines 211 and 216 are real-time encoded by the control data encoder 217. At this time, control data (section format data (PMT etc. shown in ISO / IEC13818-1)) in which information of TCD data in intertext broadcasting is also reflected is created.

This control data is stored in the FIFO memory 218.
After the timing is adjusted by the packetizing circuit 219
Is converted into a fixed-length packet and stored in the memory 220.

In the above process, the control data encoder 217, the FIFO memory 218 and the packetizing circuit 219 may be replaced with a database in which the encoded data in which the above TCD data is added is stored and processed.

Memories 205, 210, 22 for holding various packetized data encoded as described above.
0 is controlled by the packet multiplexing controller 221 which monitors the occupied amount so as not to cause overflow and underflow, and is sent to the memory 302 of the general multiplex encoder 300.

In the comprehensive multiple encoder 300, the MPEG
The data from the multiplex encoder 100 is held in the memory 301, the data from the intertext multiplex encoder 800 is held in the memory 302, and the integrated packet multiplex controller 304 reads the memories 301 and 302 without causing underflow and overflow. Controlled, a fixed rate stream is sent out on line 305.

At this time, the total control data encoder 303
IS for comprehensive control of stream data
PAT and C specified in O / IEC13818-1
The control data represented by AT is shown in FIG.
It is generated in the data format of Layer 4 of the No. 4 report and is time-multiplexed with the above data stream.

Therefore, even in the transmitting apparatus having the above-mentioned configuration, the data broadcasting data defined by the No. 83 report, the No. 44 report, and the No. 53 report are matched in the satellite digital broadcasting scheduled to be served based on the No. 74 report. I can send it well.

In the above embodiment, the TCD data is given to the control data encoder 217 so that the information of the TCD data is reflected in the control data at the time of encoding. However, as shown by the dotted line in FIG. A mode is also conceivable in which information is input to the comprehensive control data encoder 303 through the comprehensive packet multiplexing controller 304, and the information of the TCD data is reflected in the comprehensive control data in the comprehensive control data encoder 303.

(Fifth Embodiment) FIG. 9 is a block diagram of a receiver for receiving a digital broadcast from the transmitters according to the first to fourth embodiments as a fifth embodiment of the present invention. This receiver includes a satellite digital decoder 600, a satellite broadcast receiving antenna circuit 700, and a TV receiver 800 with a built-in intertext decoder.

First, the terminal 601 of the satellite digital decoder 600 is supplied with the bit stream of each frequency received by the antenna circuit 700. This bit stream is input to the demodulation circuit 602. This demodulation circuit 6
In 02, the frequency is selected by the channel designation information (not shown) selected by the user, and the demodulation operation is performed.

The demodulated bit stream is input to the descrambler circuit 604 after the data error correction is performed by the error correction circuit 603. In the descrambler circuit 604, the program data designated by the user is scrambled, and when the contract with the user is valid, the descramble processing is performed according to the designated program designation information (not shown). , This outputs valid data.

The information obtained from the descrambler circuit 604 is time-multiplexed data of TS packets having a fixed length of 188 bytes defined by ISO / IEC13818-1. This data is R
It is input to an ISC (Reduced instruction set computer) 605.

In this RISC 605, MPEG / TS
In the decoder 605a, ISO / IEC13818
The packets of the video signal, the audio signal and the intertext signal which compose the program designated by the user are selected from the stream in which the TS packets each having the fixed length of 188 bytes specified in -1 are multiplexed. And pull out.

Here, for the video decoding circuit 606, the PES (or ES (ES: elementary stream) from which the PES header is removed) of the video signal shown in FIGS. 2 and 3 is supplied to the audio decoding circuit 607. 2 and 3
The PES (or ES (ES: elementary stream) from which the PES header is removed) of the audio signal shown in is output.

Also, the intertext data is output to the data conversion unit 605b in the RISC 605, and when the intertext data is sent by the matching method shown in FIG. 5,
If the data up to the level 3 of the No. 83 report is converted and the intertext data is sent by the matching method shown in FIG. 3, the level 4 of the No. 74 report, the level 5, the level 2 of the No. 83 report are sent. Data is converted and output to the data stream port 615.

The signal processing in the RISC 605 is basically performed by a software program.
Therefore, if the program is rewritten, and the data output to the data stream port 615 is the intertext data sent by the matching method shown in FIG. 2, the layer 2 shown in FIG. It is also possible to perform data conversion up to layer 1, and in the case of the matching method shown in FIG. 3, data conversion up to layer 1 shown in FIG. 1 is also possible.

Further, the data transmission timing is RIS.
A clock reproduced based on system clock reproduction information called PCR of the TS packet input to C605,
When the intertext information is sent from the transmitters having the configurations of the first, second, and fourth embodiments, the DTS and PT sent by the PES header of the telesoft signal are sent.
S is compared, and further, it is determined in consideration of the time when the intertext decoder described later decodes the telesoft signal. Alternatively, it is determined based on the time information sent as intertext data in consideration of the time for the intertext decoder to decode the telesoft signal.

When the transmitting side is the third embodiment, the data transmission timing is the clock reproduced based on the system clock reproduction information called PCR of the TS packet input to the RISC 605 and the header of the PES of the telesoft signal. The sent DTS and PTS are compared with each other, and the decision is made in consideration of the time for the intertext decoder to decode the telesoft signal.

The RISC 605 also controls the modem 611. Here, the control of the modem 611 is used, for example, when the management center collects the billing information of the pay broadcast viewed by the user through the telephone line connected to the port 612.

The video signal decoded by the video decoding circuit 606 is NTSC encoded by the NTSC encoder 608, and the DAC (digital / analog converter) 609 is provided.
In the above, it is converted into an analog signal and sent out from the video signal output port 613. The audio signal decoded by the audio decoding circuit 607 is converted into an analog signal by the DAC 610 and output from the audio signal output port 614.

Signals obtained from the video signal output port 613, the audio signal output port 614, and the data stream output port 615 of the satellite digital broadcast decoder 600 are TV receivers 80 with a built-in intertext decoder, respectively.
0 video signal input port 801 and audio signal input port 8
02, and is input to the data stream input port 803.

In the TV receiver 800 with a built-in intertext decoder, similar to the conventional TV receiver, the video signal and audio signal reception processing is performed and output to the monitor and the speaker. The intertext data obtained from the data stream input port 803 undergoes a format conversion operation in the interface circuit (I / F) 807 into a signal of a format accepted by the intertext decoder 805.

When the intertext data obtained from the data stream input port 803 is layer 3 of report No. 83 and the format signal received by the intertext decoder 805 is layer 1, the interface circuit 807 is shown in FIG. Conversion to the layer 2 and the layer 1 is performed.

The data stream input port 8
If the intertext data obtained from 03 is layer 2 of report No. 83 and the format signal received by the intertext decoder 805 is layer 1, the interface circuit 807 performs conversion to layer 1 shown in FIG. The intertext data obtained from the data stream input port 803 is layer 1 of report No. 83.
In the case of, the interface circuit 807 becomes a bypass circuit.

When the intertext data obtained from the data stream input port 803 is the layer 3 of the No. 83 report and the format signal received by the intertext decoder 805 is the layer 2, the interface circuit 807 has the layer shown in FIG. Conversion to 2.

The data stream input port 8
When the intertext data obtained from No. 03 is layer 2 of report No. 83 and the format signal received by the intertext decoder 805 is layer 2, the interface circuit 807 becomes a bypass circuit.

In the intertext decoder 805, the input intertext data is decoded, and the decoded signal is subjected to video / audio processing &
It is sent to the CRT unit 804 and mixed with the video signal obtained from the video signal input port 801 or the audio signal obtained from the audio signal input port 802 or MIX or output to the CRT and output to the speaker.

At this time, as described in the first embodiment,
Since telesoft data, time information data, and TCD data as intertext necessary for decoding processing are sent, the intertext decoder 805 performs the same decoder processing as in the case of processing intertext information of terrestrial analog broadcasting. Is done.

Furthermore, as described in the first embodiment,
The time information related to the intertext is not only the current time, but in the case of a service that sets a time limit for the user, for example, the time limit, the time difference from the current time, and the service end time are sent. Therefore, it is conceivable that the countdown text data until the end of the service is displayed on the screen or output at the same time as the screen in which the intertext data is decoded according to the information.

Further, the intertext decoder 805
The modem 806 also controls along with the intertext data decoding process, and communicates with the center side through a telephone line connected to the port 808 according to a user's instruction (not shown).

As can be seen from the above description, the receiving apparatus having the above configuration can separate the data of the data broadcast from the received data of the digital broadcast, and can display the data using the existing intertext decoder. .

(Sixth Embodiment) FIG. 10 shows another receiver according to the sixth embodiment of the present invention, which receives the digital broadcast from the transmitter according to the first to fourth embodiments. It shows a block configuration. This receiver is similar to the fifth embodiment in that the satellite digital decoder 6
00, an antenna circuit 700 for receiving satellite broadcasting, and a TV receiver 800 with a built-in intertext decoder. In FIG. 10, the same parts as those in FIG. 9 are designated by the same reference numerals, and a duplicate description will be omitted here.

A feature of the present embodiment is a method of transmitting the data stream obtained by the data conversion section 605b of the RISC 605 to the TV receiver 800 with a built-in intertext decoder in the satellite digital decoder 600.

That is, the RISC 605 is the same as that of the fifth embodiment, and is a TS having a fixed length of 188 bytes defined by ISO / IEC13818-1.
2 and 3 for the video decoding circuit 606, the packets of the video signal, the audio signal and the intertext signal forming the program designated by the user are selected and extracted from the stream in which the packets are multiplexed. The PES (or ES) of the video signal shown in FIG.
For 7, the PES (or ES) of the audio signal shown in FIGS. 2 and 3 is output.

For intertext data, when sent by the data conversion unit 605b by the matching method shown in FIG. 2, up to Level 5, No. 74 report, at Level 4, up to No. 83 report at Level 3, level 2 3 is converted and sent by the matching method shown in FIG. 3, data conversion up to layer 5 of No. 74 report, layer 4, and layer 2 of No. 83 report is performed, and the result is sent to the superposition conversion circuit 616. Output.

On the other hand, the video signal decoded by the video decoding circuit 606 is input to the MIX circuit 617 which time-multiplexes the signal. In the superposition conversion circuit 616, signal processing for converting the input intertext information into the layer 1 shown in FIG. 1 is performed, and the converted data is input to the MIX circuit 617.

In the MIX circuit 617, the superimposition conversion circuit 616 is added to the video signal input from the video decoding circuit 606.
The signal input from V is stipulated in No. 83 report
A process of performing multiplexing in BL (vertical blanking period) is performed and N
It is sent to the TSC encoder 608. The NTSC encoder 608 performs the NTSC encoding process and DA
A TV with a built-in intertext decoder that is converted to an analog signal at the C609 and is output from the video signal output port 613.
It is sent to the receiver 800. Subsequent processing is the same as in the case of the fifth embodiment.

In the TV receiver 800 with a built-in intertext decoder, similar to a conventional TV receiver, a process of receiving a video signal and an audio signal and outputting them to a monitor and a speaker, and an intertext data multiplexed in VBL. Decoding processing and presentation processing.

In particular, in the video / audio processing & CRT 804, similar to the conventional TV receiver, the receiving processing of the video signal and the audio signal is performed, the processing of outputting to the monitor and the speaker, and the intertext data multiplexed in the VBL are extracted. , And sends it to the intertext decoder 805 to present the intertext data decoded by the decoder 805. Hereinafter, the processing performed by the intertext decoder 805 is similar to that of the fifth embodiment.

Therefore, even the receiving apparatus having the above-mentioned structure can separate the data of the data broadcast from the received data of the digital broadcast, and can display the data using the existing intertext decoder.

(Seventh Embodiment) FIG. 11 is a seventh embodiment of the present invention, showing another receiving apparatus for receiving digital broadcast from the transmitting apparatus according to the first to fourth embodiments. It shows a block configuration. This receiving device includes a satellite digital decoder 600 and a satellite broadcast receiving antenna circuit 700 as in the fifth and sixth embodiments, except that a normal TV receiver 900 is used. That is, the intertext decoder is built in the satellite digital decoder 600. In FIG. 11, FIG.
Also, the same parts as those in FIG. 10 are denoted by the same reference numerals, and redundant description will be omitted here.

That is, in the RISC 605 of the satellite digital decoder 600, the MPEG TS decoder 605a
In, a video signal, an audio signal, and an intertext signal forming a program specified by a user from a stream in which TS packets having a fixed length of 188 bytes defined in ISO / IEC13818-1 are multiplexed. 2 and 3 for the video decoding circuit 606 and the audio signal shown in FIGS. 2 and 3 for the audio decoding circuit 607. PES (or E
S) is output.

For the intertext data, see FIG.
When the intertext data is sent by the matching method shown in (1), the data conversion is performed up to layer 5 of report No. 74, layer 4, and layer 3 of report 83, and layer 2, and the matching method shown in FIG. When the intertext data is sent by, the data conversion up to the layer 5 of the No. 74 report, the layers 4 and 3 to the layer 2 of the 83 report is performed and output to the interface circuit (I / F) 618.

Signal processing in the RISC 605 is performed by a software program. The data transmission timing to the interface circuit 618 is RISC.
When the clock reproduced based on the system clock reproduction information called PCR of the TS packet input to 605 and the intertext information are transmitted from the transmitters according to the first, second, and fourth embodiments, The DTS and PTS sent by the PES header of the telesoft signal are compared with each other, and the decision is made in consideration of the time at which the intertext decoder decodes the telesoft signal. Alternatively, it is determined based on the time information sent as intertext data in consideration of the time for the intertext decoder to decode the telesoft signal.

In the case of the transmitting apparatus according to the third embodiment, the data transmission timing is as follows: the clock reproduced based on the system clock reproduction information called PCR of the TS packet input to the RISC 605 and the PES of the telesoft signal. The DTS and PTS sent in the header are compared, and the decision is made in consideration of the time at which the intertext decoder decodes the telesoft signal.

The video signal decoded by the video decoding circuit 606 is input to the MIX circuit 617 which time-multiplexes the signal. The interface circuit 618 converts the input intertext data into the intertext decoder 61.
9 is converted into a signal of a format that can be accepted.

When the intertext data obtained from the RISC 605 is the layer 3 of the 83rd report and the format signal received by the intertext decoder 619 is the layer 1, the interface circuit 618 has the layers 2 and 3 shown in FIG. Conversion to 1 is performed.

If the intertext data obtained from the RISC 605 is layer 2 of report No. 83 and the format signal received by the intertext decoder 619 is layer 1, layer 1 shown in FIG. Is converted to.

When the intertext data obtained from the RISC 605 is layer 1 of No. 83 report,
The interface circuit 618 becomes a bypass circuit.

If the intertext data obtained from the RISC 605 is layer 3 of report No. 83 and the format signal received by the intertext decoder 619 is layer 2, layer 2 shown in FIG. Is converted to.

When the intertext data obtained from the RISC 605 is layer 2 of the 83rd report and the format signal received by the intertext decoder 619 is layer 2, the interface circuit 618 becomes a bypass circuit.

The intertext decoder 619 decodes the intertext information input from the interface circuit 618 and sends it to the MIX circuit 617 as video information.

At this time, the intertext decoder 619
When the time information is the original intertext information, the transmission timing of the video signal obtained from the above is associated with the time managed by the intertext decoder, as described in the first embodiment and the like. Conversely, ISO / IEC1
When the time management is performed based on the time management of digital broadcasting as defined in 3818-1, RISC
Interface (I / F) 605 provided in 605
It is determined based on the time management information of the digital broadcast obtained from c.

As a program selection method in the intertext decoder 619, there is a method of selecting a program using the original intertext TCD data obtained from the interface circuit 618. Further, as described in the fourth embodiment, it is conceivable that the transmitting side transmits TCD data as information corresponding to digital broadcast section data.
A method of selecting the program by transmitting the information corresponding to the TCD to the intertext decoder 619 through the interface 605c after the analysis in 05 is also conceivable.

[0236] It is also possible to switch the EPG (ELECTRICAL PROGRAM GUIDE) output by the user for designating the service between digital broadcasting and intertext.

[0237] At this time, the user selects an EPG
When the screen is displayed, if the service to be received by the data broadcast is changed, the EPG screen based on the data broadcast is switched. Furthermore, if the user wants to return to the original EPG of digital broadcasting, he / she gives the instruction.

[0238] Specifically, intertext, data broadcast B, etc. are displayed in text on the EPG screen of digital broadcasting,
When the user selects it, the intertext EPG
Switch to the screen. Here, when the user selects digital broadcasting, it is possible to return to the EPG screen of the original digital broadcasting, and even when the user selects the intertext screen, it is possible to immediately return to digital broadcasting.

This state is shown in FIG. In FIG. 25, (A) is an EPG for digital broadcasting, (B) is an EPG for intertext, (C) is an intertext screen,
(D) is a remote controller for screen selection. Of course, it is conceivable that buttons for various services are set on the remote controller shown in FIG. 25D, and in this case, FIGS. 25A and 25B are switched.

The MIX circuit 617 is the video decoding circuit 6
The video signal decoded in 06 and the video signal information obtained from the intertext decoder 619 are prioritized and switched to create a new video signal, both video signals are multiplied by a coefficient and MIXed, 1 screen It is also conceivable that both video signals are time-converted at the same time, such as left and right or up and down, and output.

The video signal subjected to the MIX processing as described above is sent to the NTSC encoder 608 for NTSC encoding processing, converted into an analog signal in the DAC 609 and sent from the video signal output port 613. The audio signal decoded by the audio decoding circuit 607 is converted into an analog signal by the DAC 610 and output from the audio signal output port 614.

Although it has been stated that all signals obtained from the intertext decoder are video signals,
There is no problem even if it is a voice signal, and a voice MIX not shown
Alternatively, there is no problem even if the audio MIX or the switching process is performed by the switching circuit.

The RISC 605 also controls the modem circuit 611. The modem circuit 611 is used for both digital broadcasting and intertext, but since the communication protocol may be different, it is necessary to switch the processing software to be used.

Basically, the processing software may be switched according to the service the user is currently receiving, but if the data processing performed using the modem circuit 611 is not completed in any of the services, Even if the service received by the user is switched, the processing is continued until the data processing using the modem circuit 611 is completed, and after the processing is completed, a new service is dealt with.

The signals obtained from the video signal output port 613 and the audio signal output port 614 of the satellite digital broadcast decoder 600 are input to the video signal input port 901 and the audio signal input port 902 of the TV receiver 900, respectively, and are supplied to the conventional TV. Similar to the receiver, the video signal and audio signal reception processing is performed and output to the monitor and the speaker.

Therefore, even the receiving apparatus having the above-mentioned structure can separate the data of the data broadcast from the received data of the digital broadcast, and can display the data using the existing intertext decoder.

(Eighth Embodiment) FIG. 12 shows, as an eighth embodiment of the present invention, another receiving apparatus for receiving a digital broadcast from the transmitting apparatus according to the first to fourth embodiments. It shows a block configuration. 12, the same parts as those in FIG. 11 are designated by the same reference numerals, and the duplicated description will be omitted here.

The receiver according to the present embodiment comprises a satellite digital decoder 600, a satellite digital broadcast receiving antenna circuit 700, and a TV receiver 900. In the satellite digital decoder 600, the processing from the descrambler circuit 604 to the portion where the signal is input to the RISC 605 is the same as in the seventh embodiment.

In the RISC 605, ISO / IEC13
The video signal, audio signal, and intertext signal packets that compose the program designated by the user are selected from the stream in which the TS packets that have a fixed length of 188 bytes specified in 818-1 are multiplexed. 2 for the video decoding circuit 606.
3 and the PES (or ES) of the video signal shown in FIG. 3 and the PES (or ES) of the audio signal shown in FIGS. 2 and 3 to the audio decoding circuit 607.

For intertext data, see FIG.
When the intertext data is sent by the matching method shown in (4), the data conversion up to layer 5 of No. 74 report, layer 4, and layer 3 of No. 83 report is performed. Further, when intertext data is sent by the matching method shown in FIG. 9, data conversion up to layer 5 of report No. 74, layer 4, and layer 2 of report 83 is performed.

Thereafter, in the RISC 605, the intertext data is decoded according to the report No. 83 shown in FIG. The TCD data and time information data used in the decoding process differ depending on the embodiment on the transmission side.

That is, when using the original intertext TCD data and time information, the decoding process based on the report No. 83 is performed, and the information specified in the report No. 74 sent by digital broadcasting is performed. When the original signal processing is performed, section data corresponding to TCD data defined in Report No. 83 sent in Report No. 74, system clock information located in the adaptation field of the TS packet, and PES header or Decode using the section data showing the time information,
It is conceivable to output the decoded signal to the MIX circuit 617.

The subsequent signal processing procedure is similar to that of the seventh embodiment, and therefore its explanation is omitted.

As is clear from the above description, even the receiving device having the above configuration can separate the data of the data broadcast from the received data of the digital broadcast, and can appropriately display the data.

(Ninth Embodiment) FIG. 13 shows another receiver according to the ninth embodiment of the present invention, which receives the digital broadcast from the transmitter according to the first to fourth embodiments. It shows a block configuration. 13, the same parts as those in FIG. 11 are designated by the same reference numerals, and the duplicated description will be omitted here.

The receiver according to the present embodiment comprises a satellite digital decoder 600, a satellite digital broadcast receiving antenna circuit 700, and two TV receivers 900 and 1000.

In the satellite digital decoder 600, R
The processing up to ISC 1430 is the same as in the seventh embodiment.
The intertext decoder 619 decodes the intertext information input from the interface circuit 618 and sends it to the NTSC encoder circuit 620 as video information. Similarly, if a decoded audio signal exists, it is output as an audio signal from the intertext decoder 619.

At this time, the intertext decoder 619
When the time information is the original intertext information, the transmission timings of the video signal and the audio signal obtained from the above correspond to the time managed by the intertext decoder 619, as described in the first embodiment and the like. Let

On the contrary, when the time management is performed based on the time management of the digital broadcasting as defined in ISO / IEC13818-1, the time management of the digital broadcasting obtained from the interface 605c provided in the RISC 605 is performed. It is done based on information.

The NTSC encoder 620 performs NTSC encoding processing, converts it into an analog signal in the DAC 621, and sends it out from the video signal output port 623. The audio signal is converted into an analog signal in the DAC 622 and output from the audio signal output port 624.

On the other hand, the video signal compression-decoded by the video decoding circuit 606 is the NTSC encoder 60.
8 is sent. NTS for NTSC encoder 608
C encoding processing is performed, converted into an analog signal in the DAC 609, and sent out from the video signal output port 613. The audio signal decoded by the audio decoding circuit 607 is converted into an analog signal by the DAC 610 and output from the audio signal output port 614.

Video signal output ports 613 and 623 and an audio signal output port 61 of the satellite digital broadcast decoder 600.
The signals obtained from 4, 624 are respectively the TV receiver 9
00 and 1000 video signal input ports 901a and 100
1. Input to the audio signal input ports 902a and 1002, the video signal and the audio signal are received similarly to the conventional TV receiver, and output to the monitor and the speaker.

Further, in the case of a TV receiver 900 equipped with two or more video and audio input ports, the video signal output port 61 of the satellite digital broadcast decoder 600 is used.
3, 623, and the signals obtained from the audio signal output ports 614 and 624 are respectively converted to video signal input ports 901a and 901a.
It is also conceivable that a mode of inputting to 901b and voice signal input ports 902a and 902b and simultaneously displaying on the screen and outputting voice.

The subsequent signal processing procedure is the same as that of the seventh embodiment, and therefore its explanation is omitted.

As is clear from the above description, even the receiving device having the above-mentioned configuration can separate the data of the data broadcast from the data of the digital broadcast, and the existing intertext decoder can be used for the display and the like. it can.

(Tenth Embodiment) FIG. 14 shows, as a tenth embodiment of the present invention, another receiving apparatus for receiving digital broadcast from the transmitting apparatus according to the first to fourth embodiments. It shows a block configuration. 14, the same parts as those in FIG. 13 are designated by the same reference numerals,
Here, duplicate description is omitted.

As in the ninth embodiment, the receiver according to the present embodiment comprises a satellite digital decoder 600, a satellite digital broadcast receiving antenna circuit 700, and two TV receivers 900 and 1000.

The satellite digital decoder 600 is a RISC.
The processing up to 605 is the same as that of the eighth embodiment, and the RISC
At 605, the intertext information is decoded and sent as video information to the NTSC encoder circuit 620. Similarly, if a decoded audio signal exists, it is output as an audio signal.

At this time, the transmission timing of the video signal and the audio signal is the time managed by the intertext decoder when the time information is the original intertext information as described in the first embodiment and the like. Correspond to.
On the contrary, when the time management is performed based on the time management of the digital broadcasting as defined in ISO / IEC13818-1, the time management is performed based on the time management information of the digital broadcasting.

The NTSC encoder 620 performs NTSC encoding processing, converts it into an analog signal in the DAC 621, and outputs it from the video signal output port 623. The audio signal is converted into an analog signal in the DAC 622 and output from the audio signal output port 624.

The following signal processing procedure is similar to that of the ninth embodiment, and therefore its explanation is omitted.

As is apparent from the above description, even the receiving device having the above-mentioned configuration can separate the data of the data broadcast from the data of the digital broadcast, and can appropriately display the data.

(Eleventh Embodiment) FIG. 15 is an eleventh embodiment of the present invention, showing another receiving device for receiving digital broadcasts from the transmitting devices according to the first to fourth embodiments. It shows a block configuration. 15, the same parts as those in FIG. 12 are designated by the same reference numerals,
Here, duplicate description is omitted.

As in the eighth embodiment, the receiving apparatus according to the present embodiment has a satellite digital decoder 600, a satellite digital broadcast receiving antenna circuit 700, and a TV receiver 900.
It consists of.

In the satellite digital decoder 600,
The bit stream of each frequency received by the antenna circuit 700 is input to the terminal 601. On the other hand, the terminal 625
A broadcast signal by an analog signal is input to. Here, the case where the digital broadcasting is satellite and the analog broadcasting is terrestrial will be described as an example. However, the digital broadcasting is not limited to satellite, and terrestrial and CATV are also considered, and analog broadcasting is not limited to terrestrial. , Satellite, CATV are also possible.

In the demodulation circuit 602, the frequency is selected by the channel designation information selected by the user (not shown), and the demodulation operation is performed. The demodulated bit stream is input to the error correction circuit 603, the data is error-corrected, and then input to the descrambler circuit 604.

In the descrambler circuit 604, the program data designated by the user is scrambled, and when the user has a valid contract, descramble processing is performed according to the program designation information designated by the user. The data is output. Descrambler circuit 6
The information selected from 04 is ISO / IEC13818-
TS packets having a fixed length of 188 bytes defined in 1 are time-multiplexed data.

The analog signal input from the terminal 625 is input to the analog broadcasting tuner 626, signal processing is performed based on the channel designation information designated by the user (not shown), and the signal is input to the RISC 605 as a video signal.

In the RISC 605, the signal obtained from the descrambler circuit 604 is ISO / IEC13818.
The packets of the video signal, the audio signal and the intertext signal which compose the program designated by the user are selected from the stream in which the TS packets each having the fixed length of 188 bytes specified in -1 are multiplexed. 2 and 3 for the video decoding circuit 606, and the PES (or ES) of the audio signal shown in FIGS. 2 and 3 for the audio decoding circuit 607 (or ES). ES) is output.

For the intertext data, see FIG.
When the intertext data is sent by the matching method shown in (4), the data conversion up to layer 5 of No. 74 report, layer 4, and layer 3 of No. 83 report is performed. Further, when the intertext data is sent by the matching method shown in FIG. 3, data conversion up to layer 5 of No. 74 report, layer 4, and layer 2 of No. 83 report is performed, and shown in FIG. According to the No. 83 report, the intertext data is decoded.

The TCD data and time information data used in the decoding process differ depending on the embodiment on the transmitting side. That is, the original intertext TCD
When data and time information are used, decoding processing based on report No. 83 is performed, and when signal processing is performed based on information specified by report No. 74 sent by digital broadcasting, Decoded using section data corresponding to TCD data defined in Report No. 83 sent in Report No. 74, system clock information located in the adaptation field of TS packet, and section data indicating PES header or time information It is conceivable to output the processed and decoded signal to the MIX circuit 617.

Furthermore, it is also possible to extract the intertext data multiplexed in the VBL from the video signal obtained from the analog broadcasting tuner 626 and perform the intertext data decoding process.

Here, there is a possibility that the intertext service is being performed for both analog broadcasting and digital broadcasting, but if exactly the same signal is being received, it will be sent over a transmission path with few transmission errors. Select reliable information and perform decoding processing.

When different information is obtained, the decoding is simultaneously performed, and one of them is selected according to the designation information given by the user (not shown) to select the MIX circuit 617.
It is also conceivable to output to or to multiple screens. Further, at this time, the information obtained from both analog and digital broadcasts can be correlated with each other to perform the decoding process.

It is also conceivable to output the video signal obtained from the analog broadcasting tuner 626 to the MIX circuit 617. At this time, the intertext information processed as described above may be screen-multiplexed and output to the MIX circuit 617.

The video signal decoded by the video decoding circuit 606 is input to the MIX circuit 617 which multiplexes the signals. M
The IX circuit 617 performs a process of screen-multiplexing or time-converting the video signal obtained from the video decoding circuit 606 and the video signal obtained from the RISC 605 to form one screen image on the left or right or top and bottom.

The following signal processing procedure is the same as that of the eighth embodiment, and therefore its explanation is omitted.

As is clear from the above description, even the receiving device having the above-mentioned configuration can separate the data of the data broadcast from the received data of the digital broadcast, and can appropriately display the data.

(Twelfth Embodiment) FIG. 16 shows another receiver according to the twelfth embodiment of the present invention, which receives digital broadcasts from the transmitters according to the first to fourth embodiments. It shows a block configuration. 16, the same parts as those of FIG. 14 are designated by the same reference numerals,
Here, duplicate description is omitted.

The receiver according to the present embodiment is similar to the tenth embodiment in that the satellite digital decoder 600, the satellite digital broadcast receiving antenna circuit 700 and the TV receiver 90 are provided.
It consists of 0 and 1000.

In the satellite digital decoder 600,
The signal processing up to the RISC 605 is the same as in the eleventh embodiment, and the video signal of the digital broadcast is the video decoding circuit 606.
Then, the audio signal is input to the audio decoding circuit 607 and subjected to decoding processing.

On the other hand, NTSC encoder 620 uses NT
SC encoding processing is performed, converted into an analog signal in the DAC 621, and transmitted from the video signal output port 623. The audio signal is converted into an analog signal in the DAC 622 and output from the audio signal output port 624.

The video signal compression-decoded by the video decoding circuit 606 is sent to the NTSC encoder 608. The NTSC encoder 608 performs NTSC encoding processing, converts it into an analog signal in the DAC 609, and outputs it from the video signal output port 613. The audio signal decoded by the audio decoding circuit 607 is converted into an analog signal by the DAC 610 and output from the audio signal output port 614.

Video signal output ports 613 and 623 and an audio signal output port 61 of the satellite digital broadcast decoder 600.
The signals obtained from 4, 424 are respectively the TV receiver 9
00 and 1000 video signal input ports 901a and 100
1. Input to the audio signal input ports 902a and 1002, video signal and audio signal reception processing is performed in the same manner as a conventional TV receiver, and output to a monitor and a speaker.

In the case of a TV receiver 900 equipped with two or more video and audio input ports, the video signal output port 61 of the satellite digital broadcast decoder 600 is used.
3, 623, and the signals obtained from the audio signal output ports 614 and 624 are respectively converted to video signal input ports 901a and 901a.
It is also conceivable that a mode of inputting to 901b and voice signal input ports 902a and 902b and simultaneously displaying on the screen and outputting voice.

The subsequent signal processing procedure is the same as that of the tenth embodiment, and therefore its explanation is omitted.

As is clear from the above description, even the receiving device having the above configuration can separate the data of the data broadcast from the received data of the digital broadcast, and can appropriately display the data.

(Thirteenth Embodiment) FIG. 17 shows another receiver according to the thirteenth embodiment of the present invention, which receives a digital broadcast from the transmitter according to the first to fourth embodiments. It shows a block configuration.

The receiving apparatus according to this embodiment is composed of a satellite digital broadcast receiving antenna circuit 700 and a TV receiver 1100 having a satellite digital decoder built therein.

The bit stream of each frequency received by the antenna circuit 700 is input to the terminal 1101. On the other hand, a broadcast signal as an analog signal is input to the terminal 1106. Here, the case where the digital broadcasting is satellite and the analog broadcasting is terrestrial will be described as an example. However, the digital broadcasting is not limited to satellite, and terrestrial and CATV are also considered, and analog broadcasting is not limited to terrestrial. , Satellite, CATV are also possible.

In the demodulation circuit 1102, the frequency is selected by the channel designation information selected by the user (not shown), and the demodulation operation is performed. The demodulated bit stream is input to the error correction circuit 1103, and after the data error correction is performed, the descrambler circuit 110
4 is input.

In the descrambler circuit 1104, the program data designated by the user is scrambled, and when the user has a valid contract, the descramble processing is performed according to the program designation information designated by the user. The data is output. The information selected from the descrambler circuit 1104 is ISO / IEC1381.
TS packets having a fixed length of 188 bytes specified in 8-1 are time-multiplexed data.

The analog signal input from the terminal 1106 is input to the analog broadcasting tuner 1107, signal processing is performed based on channel designation information designated by a user (not shown), and the signal is input to the RISC 1105 as a video signal.

In the RISC 1105, the signal obtained from the descrambler circuit 1104 is ISO / IEC138.
From the stream in which TS packets having a fixed length of 188 bytes defined in 18-1 are multiplexed, packets of video signals, audio signals, and intertext signals that form the program specified by the user are extracted. 2 and 3 for the video decoding circuit 1108 and P for the audio signal shown in FIGS. 2 and 3 for the audio decoding circuit 1109.
Output ES.

For intertext data, see FIG.
When the intertext data is sent by the matching method shown in (4), the data conversion up to layer 5 of No. 74 report, layer 4, and layer 3 of No. 83 report is performed. Further, when the intertext data is sent by the matching method shown in FIG. 3, data conversion up to layer 5 of No. 74 report, layer 4, and layer 2 of No. 83 report is performed, and shown in FIG. According to the No. 83 report, the intertext data is decoded.

The TCD data and time information data used in the decoding process differ depending on the embodiment on the transmitting side. That is, the original intertext TCD
When data and time information are used, decoding processing based on report No. 83 is performed, and when signal processing is performed based on information specified by report No. 74 sent by digital broadcasting, Decoded using section data corresponding to TCD data defined in Report No. 83 sent in Report No. 74, system clock information located in the adaptation field of TS packet, and section data indicating PES header or time information It is conceivable to output the processed and decoded signal to the MIX circuit 1110.

Furthermore, it is also possible to extract intertext data multiplexed in VBL from the video signal obtained from the analog broadcasting tuner 1107 and perform intertext data decoding processing.

[0308] Here, there is a possibility that the intertext service is being performed for both analog broadcasting and digital broadcasting, but if exactly the same signal is being received, it will be sent over a transmission path with few transmission errors. Select reliable information and perform decoding processing.

If different information is obtained, decoding is performed at the same time, one of them is selected according to the designation information given by the user (not shown), and the MIX circuit 111 is selected.
It is also conceivable to output to 0, or to output multiple screens. Further, at this time, the information obtained from both analog and digital broadcasts can be correlated with each other to perform the decoding process.

It is also possible to output the video signal obtained from the analog broadcasting tuner 1107 to the MIX circuit 1110. At this time, it is conceivable that the intertext information processed as described above is screen-multiplexed and output to the MIX circuit 1110.

The video signal decoded by the video decoding circuit 1108 is input to the MIX circuit 1110 which multiplexes the signals. In the MIX circuit 1110, a video signal obtained from the video decoding circuit 1109 and a video signal obtained from the RISC 1105 are screen-multiplexed or time-converted to perform a process of forming one screen image horizontally or vertically.

As described above, the signal processing procedure up to the video DAC 1112 and the audio DAC 1113 is the same as that in the eleventh embodiment. In the MIX circuit 1110, the signal obtained from the video decoding circuit 1108 and the signal obtained from the RISC 1105 are combined. Processing such as prioritizing and outputting, or so-called alpha blending in which the levels of both signals are added and divided by 2, or time compression is performed to calibrate two screens into one screen is performed. The video signal and the audio signal processed in this way are sent to the video DAC 11
12, voice DAC 1113 to CRT & speaker 11
It is output to 14.

As is clear from the above description, even the receiving device having the above-mentioned configuration can separate the data of the data broadcast from the received data of the digital broadcast, and can appropriately display the data.

(Fourteenth Embodiment) FIG. 18 shows, as a fourteenth embodiment of the present invention, another receiving apparatus for receiving digital broadcast from the transmitting apparatus according to the first to fourth embodiments. It shows a block configuration. However, in FIG. 18, the same parts as those in FIG. 17 are denoted by the same reference numerals, and the duplicate description is omitted here.

The receiver according to the present embodiment is composed of a satellite digital broadcast receiving antenna circuit 700 and a TV receiver 1100 incorporating a satellite digital decoder, as in the thirteenth embodiment. The feature of this embodiment is that
In addition to the configuration of the thirteenth embodiment, a configuration in which the video signal and the audio signal obtained from the intertext data by the RISC 1105 are output from the ports 1116 and 1117 to the outside is added.

(Fifteenth Embodiment) By the way, it has been described that in the above system, the telesoft data can be associated with the content of the video data. Here, examples of the association are as follows.

First, in the case where the telesoft data is a computer program (script) for processing a problem such as a character and an answer to the key operation input, and the video data is, for example, a graphic for the above problem. Is. In such a program, when a problem is expressed on the screen by figures and sentences, the viewer operates keys to input an answer. In this case, the response time is not infinite, but it is necessary to give a limit on the program progress. However, if the viewer does not recognize the time when he / she can reply, he / she will unnecessarily input the answer, and if there is no such reply, he / she will be distrusted by the program provider.

Therefore, in this system, since the time information can be sent from the broadcasting station (transmission) side, this time information can be effectively utilized. That is, when the time information A1 is sent as telesoft data, a time display such as "remaining time minutes and seconds" is displayed and the countdown is performed. In this way, the viewer can clearly recognize the available response time.

Various display modes are possible, and the bar display is performed so that the bar becomes shorter as the available response time decreases, or the area of the color difference portion of the circular figure is rotated. It may be a changing display.

[0320]

As described above, according to the present invention, a signal of a data broadcast represented by Intertext can be multiplexed and broadcast even in a digital broadcast so that the receiving side can easily convert the data. The effect that the existing decoder can be used by separating the data of the data broadcast on the receiving side.

[Brief description of drawings]

FIG. 1 is a diagram showing a 7-layer model of a terrestrial data broadcasting VBI system as an example of a digital broadcasting system according to the present invention.

FIG. 2 shows ISO / I in a layer 4 data group (a) and a layer 3 packet structure 1 (b) in the No. 83 report.
Through the interface between the MPEG decoder and the data broadcasting decoder defined in EC13818, the PES (c) of the layer 5 and the TSP (d) of the layer 4 in the No. 74 report
The figure showing how to incorporate.

FIG. 3 shows a layer 4 data group (a), a layer 3 data packet (b), and a layer 2 data line (c) in the No. 83 report of the MPEG decoder and the data broadcast decoder defined in ISO / IEC13818. Via the interface, PES of Tier 5 in Report No. 74
FIG. 6C is a diagram showing how the TSP (d) of the layer 4 is incorporated.

FIG. 4 is a diagram showing a block configuration of a transmission device that generates a stream of one transmission channel as a first embodiment according to the present invention.

FIG. 5 is a diagram showing another block configuration of a transmission device that generates a stream of one transmission channel as a second embodiment according to the present invention.

FIG. 6 is a diagram showing another block configuration of a transmission device that generates a stream of one transmission channel as a third embodiment according to the present invention.

FIG. 7: ISO / IEC13818-1 Transport Stream Packet Format Configuration and PES
FIG. 6 is a diagram showing the relationship with the format configuration of

FIG. 8 is a diagram showing another block configuration of a transmission device which generates a stream of one transmission channel as a fourth embodiment according to the present invention.

FIG. 9 is a diagram showing a block configuration of a receiving device that receives a digital broadcast from the transmitting device according to the first to fourth embodiments as the fifth embodiment of the present invention.

FIG. 10 is a diagram showing a block configuration of a receiving device that receives a digital broadcast from the transmitting device according to the first to fourth embodiments, as the sixth embodiment according to the present invention.

FIG. 11 is a diagram showing a block configuration of a receiving device that receives a digital broadcast from the transmitting device according to the first to fourth embodiments described above as the seventh embodiment of the present invention.

FIG. 12 is a diagram showing a block configuration of a receiving device that receives a digital broadcast from the transmitting device according to the first to fourth embodiments as the eighth embodiment of the present invention.

FIG. 13 is a diagram showing a block configuration of a receiving device that receives a digital broadcast from the transmitting device according to the first to fourth embodiments as the ninth embodiment of the present invention.

FIG. 14 is a diagram showing a block configuration of a receiving device that receives a digital broadcast from a transmitting device according to the first to fourth embodiments described above as a tenth embodiment according to the present invention.

FIG. 15 is a diagram showing a block configuration of a receiving device that receives a digital broadcast from the transmitting device according to the first to fourth embodiments described above as an eleventh embodiment according to the present invention.

FIG. 16 is a diagram showing a block configuration of a receiving device that receives a digital broadcast from the transmitting device according to the first to fourth embodiments, as the twelfth embodiment of the present invention.

FIG. 17 is a diagram showing a block configuration of a receiving device that receives a digital broadcast from the transmitting device according to the first to fourth embodiments, as the thirteenth embodiment according to the present invention.

FIG. 18 is a diagram showing a block configuration of a receiving device for receiving a digital broadcast from the transmitting device according to the first to fourth embodiments, as a fourteenth embodiment according to the present invention.

FIG. 19 is a diagram showing a hierarchical structure of a digital broadcasting system using an OSI layer of ISO / IEC13818-1 and an outline of processing in each layer.

20 is a diagram showing a layered model of a broadcast interface using the MPEG-2 system in FIG.

FIG. 21 is a diagram showing a model of video data 1 system, audio data 1 system, and additional (information) data 1 as an example of conventional packetization.

FIG. 22 is a diagram showing a hierarchical structure of conventional character multiplex broadcasting.

FIG. 23 is a diagram showing a hierarchical structure of conventional satellite data broadcasting.

FIG. 24 is a diagram showing the OSI layer definition contents of each report in satellite digital broadcasting.

FIG. 25 is a diagram showing an example of an EPG screen of satellite digital broadcasting.

[Explanation of symbols]

100 ... MPEG multiple encoder, 101 ... Video data input line, 102 ... Video compression encoder, 103 ... F
IFO memory, 104 ... Packetizing circuit, 105 ... Memory, 106 ... Audio data input line, 107 ... Audio compression encoder, 108 ... FIFO memory, 109 ... Packetizing circuit, 110 ... Memory, 111 ... Control data input line, 112 ... Control data encoder, 113 ... FIF
O memory, 114 ... Packetizing circuit, 115 ... Memory,
116 ... Packet multiplexing controller, 200 ... Intertext multiplexing encoder, 201 ... Telesoft data input line, 202 ... Data converter, 203 ... FIFO memory, 204 ... Packetizing circuit, 205 ... Memory, 20
6 ... Time information data, 207 ... Data converter, 208 ...
FIFO memory, 209 ... Packetizing circuit, 210 ... Memory, 211 ... TCD data input line, 212 ... Data converter, 213 ... FIFO memory, 214 ... Packetizing circuit, 215 ... Memory, 216 ... Control data input line, 217 ... Control data encoder, 218 ... FIFO
Memory, 219 ... Packetizing circuit, 220 ... Memory, 2
21 ... Packet multiplexing controller, 300 ... Comprehensive multiplexing encoder, 301, 302 ... Memory, 303 ... Comprehensive control data encoder, 304 ... Comprehensive packet multiplexing controller, 305 ... Data stream output line, 400,
500 ... MPEG & intertext multiple encoder,
401 ... Video data input line, 402 ... Video compression encoder, 403 ... FIFO memory, 404 ... Packetization circuit, 405 ... Memory, 406 ... Audio data input line, 407 ... Audio compression encoder, 408 ... FIFO memory, 409 ... Packetized Circuit, 410 ... Memory, 41
1 ... Telesoft data input line, 412 ... Data converter, 413 ... FIFO memory, 414 ... Packetizing circuit, 415 ... Memory, 416 ... Time information data, 417
... data converter, 418 ... FIFO memory, 419 ... packetizing circuit, 420 ... memory, 421 ... TCD data input line, 422 ... data converter, 423 ... FIFO
Memory, 424 ... Packetizing circuit, 425 ... Memory, 4
26 ... Control data input line, 427 ... Control data encoder, 428 ... FIFO memory, 429 ... Packetizing circuit, 430 ... Memory, 431 ... Packet multiplexing controller, 432 ... Time management device, 600 ... Satellite digital decoder, 601 ... Bit stream Input terminal, 602 ...
Demodulation circuit, 603 ... Error correction circuit, 604 ... Descrambler circuit, 605 ... RISC, 605a ... MPEG.T
S decoder, 605b ... Data conversion section, 605c ... Interface, 606 ... Video decoding circuit, 607 ... Audio decoding circuit, 608 ... NTSC encoder, 609 ... DA
C, 610 ... DAC, 611 ... Modem, 612 ... Telephone line connection port, 613 ... Video signal output port, 614 ... Audio signal output port, 615 ... Data stream port,
616 ... Superposition conversion circuit, 617 ... MIX circuit, 618 ...
Interface circuit, 619 ... Intertext decoder, 620 ... NTSC encoder, 621 ... Video D
AC, 622 ... Audio DAC, 623 ... Video signal output port, 624 ... Audio output port, 625 ... Analog signal input terminal, 626 ... Analog broadcasting tuner, 700 ... Satellite broadcasting receiving antenna circuit, 800 ... TV with built-in intertext decoder Receiver, 801 ... Video signal input port, 802 ... Audio signal input port, 803 ... Data stream input port, 804 ... Video / audio processing & CRT
805 ... Intertext decoder, 806 ... Modem, 807 ... Interface circuit, 808 ... Telephone line connection port, 900 ... TV receiver, 901 ... Video signal input port, 902 ... Audio signal input port, 903 ... Video
Voice processing & CRT unit, 1000 ... TV receiver, 1001
... video signal input port, 1002 ... audio signal input port, 1003 ... video / audio processing & CRT unit, 1100 ...
TV receiver with built-in satellite digital decoder 1101 ... Bit stream input terminal 1102 ... Demodulation circuit 1103
... error correction circuit, 1104 ... descrambler circuit, 11
05 ... RISC, 1106 ... Analog signal input terminal, 1
107 ... Analog broadcasting tuner, 1108 ... Video decoding circuit, 1109 ... Audio decoding circuit, 1110 ... MIX circuit,
1111 ... NTSC encoder, 1112 ... Video DA
C, 1113 ... Audio DAC, 1114 ... CRT & speaker section, 1115 ... Modem, 1116 ... Telephone line connection port, 1117 ... Video signal output port, 1118 ... Audio signal output port.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Office reference number FI technical display location // H03M 7/30

Claims (16)

[Claims] 1. A transmitting means for encoding data of a predetermined layer of a data broadcast in a format of a specific layer of a digital broadcast and transmitting the encoded data, and a transmitting means for receiving the data of the specific layer of the received digital broadcast. A digital broadcasting system comprising: a receiving unit that extracts and decodes data of a predetermined layer. 2. The transmitting means, when transmitting data of a predetermined layer of the data broadcast in a format of a specific layer of the digital broadcast, indicates the header of another data of the same layer and the same format of the digital broadcast. Based on the time information to be transmitted, the time information is provided in the header of the transmission data and encoded, and the means for transmitting is provided, wherein the reception means includes a header of data of a predetermined format in the specific layer of the received digital broadcast. The digital broadcasting system according to claim 1, further comprising means for decoding data of a predetermined layer of the data broadcasting based on the time information shown. 3. The transmitting means comprises means for matching the transmission control data of a predetermined layer of the data broadcast with a format of a specific layer of the digital broadcast and encoding and transmitting the data, and the receiving means receives the received data. It is characterized by further comprising means for extracting transmission control data of a predetermined layer of the data broadcast from data of a specific layer of the digital broadcast, decoding the data, and receiving the data of the data broadcast based on the decoding result. The digital broadcasting system according to claim 1. 4. The receiving means comprises means for matching and encoding data corresponding to time information data of a predetermined layer of the data broadcast in a format of a specific layer of the digital broadcast and transmitting the encoded data. Means for extracting time information data of a predetermined hierarchy of the data broadcast from the received data of a specific hierarchy of the digital broadcast, decoding the data, and receiving and decoding the data broadcast data based on the decoded time information The data broadcast transmission / reception system according to claim 1, further comprising: 5. The transmitting means comprises means for replacing data corresponding to time information data of the data broadcast with a data header portion of a format of a specific layer of the digital broadcast and transmitting the data, and the receiving means, Data corresponding to time information data of the data broadcast is extracted from a data header portion of a specific layer of the received digital broadcast, decoded, and the data of the data broadcast is received and decoded based on the time information. The digital broadcasting system according to claim 1. 6. The digital broadcasting system according to claim 1, wherein the data broadcasting transmits intertext data. 7. Encoding means for encoding data of a predetermined layer of a data broadcast in conformity with a format of a specific layer of a digital broadcast, and encoding data obtained by this means other than a specific layer of the digital broadcast. And a multiplexing means for time-multiplexing the data and transmitting the data, the transmitter of the digital broadcasting system. 8. The encoding means, when transmitting data of a predetermined layer of the data broadcast in a format of a specific layer of the digital broadcast, indicates the header of another data of the same layer and the same format of the digital broadcast. 8. The transmitter of the digital broadcasting system according to claim 7, wherein the header of the transmission data is encoded based on the time information to be transmitted. 9. The digital encoding system according to claim 7, wherein the encoding means encodes the transmission control data of a predetermined layer of the data broadcast in conformity with the format of a specific layer of the digital broadcast. Transmitter for broadcasting system. 10. The encoding means is adapted to encode data corresponding to time information data of a predetermined layer of the data broadcast while matching the data with a format of a specific layer of the digital broadcast. A transmitter of the described digital broadcasting system. 11. The encoding means is adapted to replace data corresponding to time information data of the data broadcast with a data header portion of a format of a specific layer of the digital broadcast for processing. Item 7. A transmitter of the digital broadcasting system according to Item 7. 12. A receiving unit for receiving a digital broadcast signal in which data of a predetermined layer of a data broadcast is encoded in conformity with a format of a specific layer of the digital broadcast, and a specific layer of the digital broadcast received by this unit. And a decoding means for extracting and decoding data of a predetermined layer of the data broadcast from the data of 1. in the receiving device of the digital broadcasting system. 13. The receiving means, when transmitting data of a predetermined layer of the data broadcast in a format of a specific layer of the digital broadcast, indicates the header of another data of the same layer and the same format of the digital broadcast. Based on the time information to be received, the header of the transmission data is provided with the time information and the encoded digital broadcast signal is received, and the decoding means is a header of data of a predetermined format of the specific layer of the received digital broadcast. 13. The receiver of the digital broadcasting system according to claim 12, wherein the data of a predetermined layer of the data broadcast is decoded based on the time information shown in. 14. The receiving means receives a digital broadcast signal transmitted by encoding transmission control data of a predetermined layer of the data broadcast in a format of a specific layer of the digital broadcast, and transmitting the encoded digital broadcast signal. Characterized in that it extracts transmission control data of a predetermined layer of the data broadcast from the received data of a specific layer of the digital broadcast, decodes it, and performs reception processing of the data of the data broadcast based on the decoding result. The receiver of the digital broadcasting system according to claim 12. 15. The receiving means receives a digital broadcast signal transmitted by encoding data corresponding to time information data of a predetermined layer of the data broadcast in a format of a specific layer of the digital broadcast and transmitting the encoded data. The decoding means extracts time information data of a predetermined layer of the data broadcast from the received data of a specific layer of the digital broadcast, decodes the time information data, and receives and decodes the data broadcast data based on the decoded time information. The receiving device of the data broadcasting system according to claim 12, which performs processing. 16. The receiving means receives a digital broadcast signal transmitted by replacing data corresponding to time information data of the data broadcast with a data header portion of a format of a specific layer of the digital broadcast, The decoding means extracts the data corresponding to the time information data of the data broadcast from the data header part of the specific layer of the received digital broadcast, decodes it, and receives the data broadcast data based on the time information and decodes the data. 13. The receiver of the digital broadcasting system according to claim 12, wherein: