JP4379428B2 - Receiver - Google Patents

Description

The present invention relates to a television signal receiving and recording / reproducing apparatus, and more particularly to a digital broadcast signal receiving and recording / reproducing apparatus that records and reproduces a digital signal as it is.

As a conventional technique for recording and reproducing a digital signal, a receiving system and a recording / reproducing apparatus for receiving and recording a digital signal transmitted by multiplexing a plurality of pieces of information are described in JP-A-8-98164. . In the prior art,
A receiving system comprising a receiving means for receiving a digital information signal transmitted by multiplexing a plurality of pieces of information and selecting desired information, and a recording means for recording the information received by the receiving means is described. ing. Japanese Patent Application Laid-Open No. 8-56350 describes a technique for selecting a desired program when receiving a digital signal transmitted by multiplexing a plurality of pieces of information and presenting the program. In the prior art, a plurality of programs are each packetized with a packet identifier added thereto, and transmission control data indicating a correspondence relationship between the program and the packet identifier is also packetized, and each of these packets is multiplexed. An apparatus for searching for each program from the multiplexed signals transmitted in this manner is described.

JP-A-8-56350

In the prior art described in the above-mentioned Japanese Patent Laid-Open No. 8-98164, there is no description about a method of reproducing only information related to a desired program from information multiplexed when the recorded program is reproduced. On the other hand, the prior art described in JP-A-8-56350 describes search means for extracting a desired signal from a multiplexed digital signal and presenting it. However, for example, when a program recorded on a conventional analog VTR is to be reproduced, it is generally possible to reproduce the program without any other operation by simply pressing a reproduction switch. Even when the digital information signal technique described in Japanese Patent Laid-Open No. 8-98164 is combined with the technique described in Japanese Patent Laid-Open No. 8-56350, a troublesome operation such as searching for a program must be performed for reproduction. Rather, the aforementioned analog VTR
Thus, a method of reproducing a desired program immediately recorded by simply pressing one switch could not be realized.

  An object of the present invention is to provide a receiving apparatus capable of immediately reproducing a program recorded as a digital signal without troublesome operations.

The object can be achieved by the configuration described in the claims as an example.

  According to the present invention, it is possible to provide a receiving apparatus capable of reproducing a recorded program without performing complicated operations during reproduction.

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

FIG. 1 is a block diagram of a digital broadcast signal receiving and recording / reproducing apparatus according to the present invention. In the following description, the antenna 300 is a quadrature phase.
An example of receiving satellite broadcast radio waves digitally modulated by the shift keying (hereinafter abbreviated as QPSK) method is shown, but this restricts the transmission method used in the present invention to satellite broadcast and the modulation method to the QPSK method. It is not a thing. In addition, Moving Picture Experts Group 2 (M
In this example, the signal compression and expansion method used in the present invention is not limited to MPEG2.
In FIG. 1, 300 is an antenna, 301 is a converter that converts received radio waves into tuner input signals, 302 is a cable, 401 is a tuner, and 402 is QPS.
K demodulation circuit, 403 is a Forward Error Correcti
on (hereinafter abbreviated as FEC), 414 and 424 are switches, 413 is a second demultiplexing unit, 423 is a signal recording / reproducing means, 404 is a first demultiplexing unit, and 405 is an MPE.
G2 decoder, 406 is a video encoder, 407 is a D / A converter, 408
Is an On Screen Display (hereinafter abbreviated as OSD), 409 is a control means, 410 is a television, 434 and 415 are RAM (Random Access Memory) for the first demultiplexing unit 404 and the MPEG2 decoder 405 to expand data, respectively. ) 419 is a ROM (Read Only Memory) in which the operation program of the control means 409 is stored.
In FIG. 1, a radio wave transmitted from a satellite (not shown) is received by an antenna 300, converted into a tuner input signal by a converter 301, and input to a tuner 401 via a cable 302. In the example shown in FIG. 1, the tuner 401 selects and outputs a desired signal from the input signal according to the setting of the control means 409. The output of the tuner 401 is demodulated by the QPSK demodulation circuit 402 and input to the FEC 403. The FEC 403 performs error correction of an input digital signal accompanying transmission.
The operation when the digital signal obtained by performing error correction of the input signal as described above is input to the first demultiplexing unit 404 via the switches 414 and 424 will be described. The satellite digital broadcasting described in the present invention has a feature that a plurality of programs can be multiplexed on one radio wave relayed by a radio wave transponder (not shown) generally mounted on the satellite. The first demultiplexing unit 404 selects a desired program from among the multiplexed programs. The signal separated by the first demultiplexing unit 404 is MPE.
It is input to the G2 decoder 405. The MPEG2 decoder 405 reproduces the digital video signal and the digital audio signal before compression by expanding the compressed digital signal. The reproduced digital video signal is input to the video encoder 406 via the OSD circuit 408, and the digital audio signal is input to the D / A converter 407. The video encoder 406 converts the input digital video signal into an analog video signal and outputs it to the television 410. On the other hand, the D / A converter 407 converts the input digital audio signal into an analog audio signal and outputs it to the television 410.
The above operation is performed by the control means 4 that operates according to the program stored in the ROM 419.
09.

In the above description, an example of a general procedure for separating desired program information in the first demultiplexing unit 404 will be described with reference to FIGS. First demultiplexing unit 404
The signal input to is a configuration in which the packets shown in FIG. An example of multiplexing is shown in FIG. The multiplexed signal as shown in FIG. 2B is processed by the first demultiplexing unit 404 to perform the operation described below. An example of the operation in the demultiplexing unit is shown in FIG. First, in step 201, the program channel of the program that the viewer wants to watch is input. An organized channel is a collective term for video, audio, and the like constituting one program, and corresponds to a television channel in conventional analog broadcasting. In digital broadcasting, generally, one frequency in which a plurality of programs are multiplexed is called a physical channel. Next, in step 202, a PAT (Program Association Table) included in the currently received multiplexed signal (= Transport Stream, hereinafter referred to as TS) is received. The PAT is one of tables in PSI (Program Specific Information) defined by the MPEG2 standard which is an international standard. In step 203, the P received in step 202 is displayed.
A desired knitting channel is searched from the AT. If there is a desired knitting channel, the process proceeds to step 207. If there is no desired formation channel, the process proceeds to step 204, where one of the PSIs is received, a NIT (Network Information Table) describing the relationship between the formation channel and the physical channel, and the desired formation channel is included. A physical channel is acquired, and the next step 205 moves to the physical channel acquired in step 204. In the actual circuit, the transition of the physical channel is performed by setting a frequency to be selected from the control means 409 to the tuner 401 as shown in FIG. Thereafter, in step 206, the PAT of the TS in the physical channel after the transition is received. When the PAT is received, the PIDs such as video and audio constituting the organization channel input in step 207
PAT (Packet ID) of PMT (Program Map Table) in which PAT is described as PAT
And receiving the PMT having the PID. However, the PMT is one of the PSI tables, and the PID is a packet identifier included in the packet header. In the PMT, the video constituting each organization channel included in the TS being received,
Since PID such as PCR (Program Clock Reference) indicating audio and time information is described, in step 208, PID such as video, audio, and PCR of a desired program is acquired. Thereafter, the acquired PID is set in the first demultiplexing means 404 in step 209, and a desired video and audio stream is received.
Input to the decoder 405 to perform decoding.

The video signal decoded by the operation described above is converted to the NTS via the OSD 408.
A program desired by the viewer can be presented by converting the audio signal into an analog signal by the C encoder and converting the audio signal into an analog signal by the D / A converter 407 and inputting the analog signal to the television 410.

Next, the recording / reproducing means 423 through the switch 414 and the second demultiplexing unit 413.
A procedure for recording the received signal and reproducing the recorded signal from the recording / reproducing means 423 through the switch 424 will be described.

When a signal is recorded on the recording / reproducing unit 423, the switch 414 is switched to connect the FEC 403 and the second demultiplexing unit 413 according to the control from the control unit 409. The second demultiplexing unit 413 is means for extracting only data necessary for the viewer to reproduce only a desired program during reproduction after recording. In the embodiment of FIG. 1, in addition to the above-described TSs such as PAT, PMT, video, and audio, M
PCR (Prog which is data indicating time information necessary for the PEG2 decoder 405
(ram Clock Reference) and information related to a desired program (program currently being viewed) are extracted from the program related information.

An example of the configuration of the second demultiplexing unit 413 is shown in FIG. In FIG. 13, demultiplexing means 4131 for extracting desired information, and speed conversion means 413 for converting the transmission rate of the output signal of the demultiplexing means 4131 so as to match the recording / reproducing means.
It consists of two. Specifically, the speed converting means 4132 is, for example, FIF
O (Fast in Fast Out) memory.

Furthermore, another configuration example of the second demultiplexing unit 413 is shown in FIG. In FIG. 14, 4133 is an interface means between the second demultiplexing unit 413 and the recording / reproducing means 423. For example, when the signal output from the speed converting means 4132 is a parallel signal, it is a means for converting it into a serial signal. is there. The signal extracted by the second demultiplexing unit 413 having the configuration shown in FIG. 13 or FIG. 14 is recorded in the recording / reproducing means 423. At the time of reproduction, the signal reproduced by the recording / reproducing unit 423 is input to the demultiplexing unit 404 via the switch 424. When the signal recorded in the recording / reproducing means 423 is reproduced, the demultiplexing means 404 is controlled by the control means 409 and operated according to the procedure shown in FIG. Hereinafter, the operation will be described. In general, PID indicating program-related information is indicated by a specific value regardless of the program.
This embodiment will be described on the premise of this.

When a signal is input from the recording / reproducing means 423, the first demultiplexing means 404 first receives the desired program related information as shown in step 441 in accordance with the control from the control means 409, and converts it into the desired program related information. Get the number of the organization channel being described. Next, in step 442, the PAT is received. Since the channel number of the organization channel recorded at this stage is known in step 441, in the next step 443, the PI of video, audio, etc. of the recorded program is recorded.
The PID of the PMT in which D is described can be acquired immediately. The following procedure is the same as that described in FIG.

As described above, in the present embodiment, the program reproduced from the recording / reproducing means 423 which recorded the program in the state of the multiplexed digital signal is immediately demultiplexed and decoded without a complicated operation by the viewer. Can be presented. Furthermore, since the desired program related information is recorded, it is possible to enhance the service using information related to the program, which is one of the features of digital broadcasting.

A second embodiment of the present invention will be described with reference to FIG. In the embodiment of FIG. 1, only the desired program information is extracted by the second demultiplexing unit 413. However, in the embodiment of FIG. 5, it is not distinguished whether the information is related to the desired program. In this configuration, all program related information is extracted and recorded.

FIG. 6 shows a procedure for processing the reproduction signal from the recording / reproducing means 423 when the configuration of the embodiment of FIG. 5 is used. The procedure of FIG. 6 is step 4 of the procedure shown in FIG.
In step 601, it is checked whether or not there is no procedure for acquiring the organization channel from the desired program-related information of 41, and the organization channel information matches the PMT recorded with the PID described in the PAT. If they do not match, the operation of step 601 is repeated until they match, and if they match, the operation moves to step 602. The subsequent operation is the same as that after step 443 in FIG.

According to the embodiment of FIG. 5, the circuit configuration of the second demultiplexing unit 413 can be simplified as compared with the case of the embodiment of FIG. It is possible to enhance the service by using information about the program described.

FIG. 7 shows a third embodiment of the present invention. The embodiment of FIG. 7 is different from the embodiment of FIG. 5 in that the program related information is not extracted, but only PAT, PMT, PCR, video and audio data are extracted. As a result, a further increase in the case of the embodiment of FIG.
The configuration of the second demultiplexing unit 413 can be simplified.

FIG. 8 shows a fourth embodiment of the present invention. The embodiment of FIG. 8 differs from the embodiment of FIG. 1 in that only the PMT, PCR, video, and audio are extracted by the second demultiplexing unit 413 and the PID rewriting means 433 is provided. That is, in the embodiment of FIG. 8, the PID rewriting unit 433 rewrites the PID of the PMT to a specific value set by the control unit 409 and records the signal on the recording / reproducing unit 423. As a result, when the recorded signal is reproduced, the PID of the PMT is known in advance, so that the video, audio and PCR PID described in the PMT can be obtained immediately and used in the same manner as in the embodiment of FIG. Can be immediately played back without complicated operations.

FIG. 9 shows a fifth embodiment of the present invention. The embodiment of FIG. 9 differs from the embodiment of FIG. 8 in that only the information of PCR, video, and audio is extracted by the second demultiplexing unit 413 and the PCR, video, and audio of PID rewriting means 433 are extracted. PI
The point is that D is rewritten to a specific value set by the control means 409.

According to the embodiment of FIG. 9, since the recorded PIDs of PCR, video, and audio are known in advance at the time of reproduction, the user can immediately reproduce without complicated operations as in the embodiment of FIG. In addition, the amount of information to be recorded can be reduced as compared with the embodiment of FIG. 8, and the configuration of the second demultiplexing unit 413 can be simplified.

FIG. 10 shows a sixth embodiment of the present invention. The embodiment of FIG. 10 differs from the embodiment of FIG. 9 in that a packet insertion unit 453 is provided instead of the PID rewriting unit 433. In the embodiment of FIG. 10, the second demultiplexing unit 413 has a desired PCR,
The PID of each information such as video and audio is acquired, and the PCR, video and audio are extracted and input to the packet insertion means 453. The packet insertion means 453 is the second
A packet describing PIDs such as PCR, video, and audio acquired by the second demultiplexing unit 413 is created and inserted in the input signal from the demultiplexing unit 413 and recorded in the recording / reproducing means 423. When reproducing the recorded signal, the first demultiplexing means 404 first controls the control means 409 so as to receive the packet inserted by the packet inserting means 453, and the PCR and video described in this are controlled. ,
Since a PID such as voice is acquired, a desired program can be presented immediately without complicated operations by the user as in the embodiment of FIG. In the above description, the PID of the packet inserted by the packet insertion unit 453 is MP.
The same PID as the PAT defined in the EG2 standard may be given. MPEG2
The standard stipulates that the PAT PID is a specific value.
When the first demultiplexing unit 404 processes the signal reproduced from the recording / reproducing unit 423, the control unit 409 first controls the first demultiplexing unit 404 so as to extract a packet having the same PID as the PAT. By setting in advance, the operation described with reference to FIG. 10 can be realized.

As described above, by using the embodiment of FIG. 10, a desired program can be presented immediately without complicated operations by the user.

FIG. 11 shows a seventh embodiment of the present invention. In FIG. 11, reference numeral 463 denotes transmission rate detection means. In FIG. 11, the second demultiplexing means 413 extracts additional data such as program information together with information such as video / audio, as in the case of the embodiment of FIG. 1 or FIG. The TS output from the second demultiplexing unit 413 is input to the transmission rate detecting unit 463. When the transmission rate detection unit 463 detects that the transmission rate of the input TS exceeds a preset specific value, the transmission rate detection unit 463 informs the control unit 409 that the transmission rate has exceeded a preset value. Outputs a notification signal. When the notification signal from the transmission rate detection means 463 is input, the control means 409 controls the second demultiplexing means 413 to extract information that does not directly affect the presentation of the program according to the preset priority. Control not to. That is, for example, when the transmission rate of the TS output from the second demultiplexing unit 413 exceeds a preset value, for example, the multiplexing output from the second demultiplexing unit 413 is stopped by stopping the extraction of program information. The signal transmission rate is set to a certain value or less.

As described above, in the embodiment of FIG.
3. When recording means having an upper limit on the transmission rate of the multiplexed signal that can be recorded is used, as long as the multiplexed signal to be recorded does not exceed a preset transmission rate, information such as video and audio constituting the program is included. Additional information such as program information can be recorded to increase added value, and the extraction of information not directly related to the presentation of program contents should be stopped even if the transmission rate of the multiplexed signal to be recorded exceeds a preset transmission rate Can record program information.
FIG. 12 shows an eighth embodiment of the present invention. In FIG. 12, reference numeral 473 denotes switch means. In FIG. 12, the second demultiplexing means 413 extracts recording-related information related to copyright protection and the like, and if information indicating that recording is prohibited is extracted as the recording-related information, the control means 409 The switch means 473 is controlled to detect that the information for prohibiting is extracted, so that the signal output from the second demultiplexing means 413 is not applied to the recording / reproducing means 423.
That is, by using the embodiment of FIG. 12, when a signal to which information for prohibiting recording is added for the purpose of copyright protection or the like is transmitted on the transmission side, an operation according to this can be performed.
In the embodiment of FIG. 12, an example in which the switch means 473 is provided to prohibit recording is shown, but a part of the second demultiplexing means 413 (such as the speed converting means 4132) or the control means 409 or It is clear that the same effect can be selected by controlling to stop all the operations.
In the embodiment, the first demultiplexing means 404 and the second demultiplexing means 413 are used.
However, the two means may be the same circuit block.

  Needless to say, the above embodiments can be summarized as the following receiving apparatus.

(1) In a system that multiplexes and transmits all video, audio, data, etc., as digital information in a single bit string of a predetermined packet format, receives at least the transmitted digital information and has a predetermined format Channel decoding means for demodulating into a bit string, first packet separating means for extracting a packet designated from the bit string, and decoding information such as video / audio / data output from the packet separating means as a television signal Source decoding means for outputting and control means for analyzing the information packet output from the first packet separating means and controlling the system, and newly extracting a designated packet from the output bit string of the channel decoding means A second packet separating means and the second packet; Speed conversion means for converting the transmission rate of the bit string output from the separation means, and interface means for converting the output of the speed conversion means into an input / output format of an external recording / playback device are provided, and an input bit string from the interface means is converted. An apparatus for receiving a digital broadcast signal, characterized in that a video / audio / data signal output to the first packet separation means can be decoded as a television signal.
(2) In the receiving apparatus of (1), the second packet separation means includes a PAT (Program Association Table) packet, one or more PMT (Program Specific Information) packets defined by the MPEG2 standard, and the PMT. An apparatus for receiving a digital broadcast signal, characterized in that it is configured to extract packets of video, audio, data, etc. defined in 1.
(3) In the digital broadcast signal receiving apparatus of (2) above, the control means includes means for comparing the PAT and the PMT when a bit string is input from an external recording / reproducing device, and the reproduced video / audio / data An apparatus for receiving a digital broadcast signal, characterized in that control is performed so as to determine, for example.
(4) In the digital broadcast signal receiving apparatus according to (1), the second packet separation means includes at least a PMT packet defined by the MPEG2 standard and a video / audio / data packet defined by the PMT packet. And a means for changing the packet ID of the PMT packet to a predetermined value.
(5) In the digital broadcast signal receiver of (4) above, when a bit string is input from an external recording / playback device, the control means extracts a PMT having a predetermined packet ID and plays back the video according to the PMT. -A digital broadcast signal receiver characterized in that it is controlled so as to determine voice, data, etc.
(6) In the digital broadcast signal receiver of (1) above, the second packet separation means extracts a packet of video / audio / data, etc., and assigns a packet ID of the video / audio / data, etc. in advance. An apparatus for receiving a digital broadcast signal, comprising means for changing to a predetermined value.
(7) In the digital broadcast signal receiver of (6) above, when a bit string is input from an external recording / reproducing device, the control means sends video / audio / data having a predetermined packet ID to the first An apparatus for receiving a digital broadcast signal, characterized in that it is controlled to be extracted by a packet separation means.
(8) In the digital broadcast signal receiver of (1) above, the second packet separation means extracts a packet of video / audio / data and designates a packet ID of the video / audio / data, etc. An apparatus for receiving a digital broadcast signal, wherein a new packet is inserted.
(9) In the digital broadcast signal receiver of (8) above, a new packet designating a packet ID of the video / audio / data has the same packet ID as the PAT defined in the MPEG2 standard. A digital digital transmission / reception receiver.
(10) In the digital broadcast signal receiver of (8) above, when a bit string is input from an external recording / reproducing device, the control means sends a new packet designating a packet ID of the video / audio / data, etc. An apparatus for receiving a digital broadcast signal, characterized in that control is performed so as to be extracted by one packet separation means.
(11) In the digital broadcast signal receiving apparatus according to (1), the second packet separation means includes at least a PAT packet, a PMT packet defined in the MPEG2 standard, and video / audio / data defined in the PMT. And a program information packet describing the contents of the video / audio / data and the like.
(12) In the digital broadcast signal receiving apparatus according to (11), when a bit string is input from an external recording / playback device, the control means extracts the program information packet in advance, and the first information is based on the program information packet. An apparatus for receiving a digital broadcast signal, characterized in that control is performed so as to determine a packet of video / audio / data to be extracted by the packet separation means.
(13) In the digital broadcast signal receiving apparatus according to (11), the program information packet is a specific program information packet describing information of a packet such as video / audio / data extracted by the second packet separation means. An apparatus for receiving a digital broadcast signal, comprising:
(14) In the digital broadcast signal receiving apparatus according to (13), when a bit string is input from an external recording / reproducing device, the control means extracts the specific program information packet in advance, and based on the specific program information packet. An apparatus for receiving a digital broadcast signal, characterized in that control is performed so as to determine a packet of video / audio / data extracted by the first packet separation means.
(15) In a system in which video, audio, data, etc. are all multiplexed and transmitted as a single bit string in a predetermined packet format as digital information, at least the transmitted digital information is received and the predetermined format Channel decoding means for demodulating into a bit string, first packet separating means for extracting a packet designated from the bit string, and decoding information such as video / audio / data output from the packet separating means as a television signal Source decoding means for outputting and control means for analyzing the information packet output from the first packet separating means and controlling the system, and newly extracting a designated packet from the output bit string of the channel decoding means A second packet separating means and the second packet; A speed converting means for converting the transmission rate of the bit string output from the data separating means, and a digital recording / reproducing means for recording / reproducing the output of the speed converting means as a digital signal, provided from the digital recording / reproducing means. An apparatus for receiving and recording / reproducing a digital broadcast signal, characterized in that an input bit string is outputted to the first packet separating means so that a video / audio / data signal can be decoded as a television signal.
(16) In the digital broadcast signal receiving and recording / reproducing apparatus according to (15), the second packet separation means includes a PAT packet, a PMT packet defined by the MPEG2 standard, and a video / audio defined by the PMT. A digital broadcast signal receiving and recording / reproducing apparatus characterized in that it is configured to extract packets of data and the like.
(17) In the digital broadcast signal receiving and recording / reproducing apparatus according to (16), the control means includes means for comparing the PAT and the PMT when reproducing the bit string from the recording / reproducing means. A digital broadcast signal receiving and recording / reproducing apparatus characterized in that it is configured to control to determine sound, data, and the like.
(18) In the digital broadcast signal receiving and recording / reproducing apparatus of (15), the second packet separation means includes at least a PMT packet defined by the MPEG2 standard and a video / audio / An apparatus for receiving and recording / reproducing a digital broadcast signal, characterized in that means for extracting a packet of data or the like and changing a packet ID of the PMT packet to a predetermined value is provided.
(19) In the digital broadcast signal receiving and recording / reproducing apparatus of (18), at the time of reproducing a bit string from the recording / reproducing means, the control means extracts a PMT having a predetermined packet ID, and the PMT A digital broadcast signal receiving and recording / reproducing apparatus, characterized in that control is performed so as to determine video / audio / data to be reproduced according to the above.
(20) In the digital broadcast signal receiving and recording / reproducing apparatus according to (15), the second packet separation means extracts a packet of video / audio / data and the like, and extracts the video / audio / data, etc. An apparatus for receiving and recording / reproducing a digital broadcast signal, comprising means for changing a packet ID to a predetermined value.
(21) In the digital broadcast signal receiving and recording / reproducing apparatus according to (20) above, when reproducing the bit string from the recording / reproducing means, the control means receives video / audio / data having a predetermined packet ID. An apparatus for receiving and recording / reproducing a digital broadcast signal, wherein the first packet separation means controls the extraction.
(22) In the digital broadcast signal receiving and recording / reproducing apparatus according to (15), the second packet separation means extracts a packet of video / audio / data and the like, and extracts the video / audio / data, etc. An apparatus for receiving and recording / reproducing a digital broadcast signal, characterized in that a new packet for designating a packet ID is inserted.
(23) In the digital broadcast signal receiving and recording / reproducing apparatus of (22), a new packet designating a packet ID of the video / audio / data is the same packet ID as the PAT defined in the MPEG2 standard. A digital broadcast signal receiving and recording / reproducing apparatus characterized by comprising:
(24) In the digital broadcast signal receiving and recording / reproducing apparatus according to (22), when the bit string is reproduced from the recording / reproducing means, the control means designates a new packet ID for designating the video / audio / data, etc. An apparatus for receiving and recording / reproducing a digital broadcast signal, characterized in that control is performed so that packets are extracted by the first packet separation means.
(25) In the digital broadcast signal receiving and recording / reproducing apparatus according to (15), the second packet separation means includes at least a PAT packet defined by MPEG2, a PMT packet, and a video / audio defined by the PMT. An apparatus for receiving and recording / reproducing a digital broadcast signal, characterized in that it is configured to extract a packet of data and the like and to extract a program information packet describing the contents of the video / audio / data.
(26) In the digital broadcast signal receiving and recording / reproducing apparatus of (25), the control means extracts the program information packet in advance and reproduces the program information packet at the time of reproducing the bit string from the recording / reproducing means. An apparatus for receiving and recording / reproducing a digital broadcast signal, characterized in that control is performed to determine a packet of video / audio / data extracted by the first packet separation means.
(27) In the digital broadcast signal receiving and recording / reproducing apparatus of (25), the program information packet is a specific packet describing information of a packet such as video / audio / data extracted by the second packet separation means. A digital broadcast signal receiving and recording / reproducing apparatus characterized by being a program information packet.
(28) In the digital broadcast signal receiving and recording / reproducing apparatus of (27), the control means extracts the specific program information packet in advance and reproduces the specific program when reproducing the bit string from the recording / reproducing means. An apparatus for receiving, recording and reproducing a digital broadcast signal, characterized in that control is performed so as to determine a packet of video / audio / data extracted by the first packet separation means based on an information packet.
(29) In the digital broadcast signal receiving apparatus according to (1), there is provided means for stopping the output of the interface means when the control means extracts non-recordable information such as the video / audio / data. A receiver for receiving a digital broadcast signal.
(30) In the digital broadcast signal receiving apparatus according to (1), means for stopping the function of the second packet extracting means when the control means extracts non-recordable information such as the video / audio / data. A digital broadcast signal receiver characterized by being provided.
(31) In the digital broadcast signal receiving and recording / reproducing apparatus of (15), means for stopping the output of the speed converting means when the control means extracts unrecordable information such as the video / audio / data. An apparatus for receiving and recording / reproducing a digital broadcast signal characterized by comprising:
(32) In the digital broadcast signal receiving and recording / reproducing apparatus of (15), when the control means extracts non-recordable information such as the video / audio / data, the function of the second packet extracting means is A digital broadcast signal receiving and recording / reproducing apparatus, characterized in that means for stopping is provided.
(33) In the digital broadcast signal receiving apparatus according to (1), the second packet separation means includes at least a PAT packet defined by the MPEG2 standard, a PMT packet, and video / audio / data defined by the PMT. In addition to extracting the packet, the program information packet describing the contents of the video, audio, data, etc. is extracted, and means for detecting the transmission rate of the signal output from the second packet separating means is provided. An apparatus for receiving a digital broadcast signal.
(34) When the transmission rate detecting means detects that the transmission rate of the signal output from the second packet separation means exceeds a preset value, the control means of (33) above sets the specified specific value. An apparatus for receiving a digital broadcast signal, characterized in that the second packet separation means is controlled so as to stop packet extraction.
(35) In the digital broadcast signal receiving and recording / reproducing apparatus according to (15), the second packet separation means is at least a PAT packet, a PMT packet defined by the MPEG2 standard, and a video / audio defined by the PMT.・ Extracting packets of data, etc., and extracting program information packets describing the contents of the video, audio, data, etc., and detecting the transmission rate of the signal output from the second packet separation means An apparatus for receiving and recording / reproducing a digital broadcast signal, characterized in that a means is provided.
(36) If the transmission rate detecting means detects that the transmission rate of the signal output from the second packet separation means exceeds a preset value, the control means of (35) above may perform a specified specific setting. An apparatus for receiving and recording / reproducing a digital broadcast signal, wherein the second packet separation means is controlled so as to stop packet extraction.
(37) In the digital broadcast signal receiving apparatus of (1), there is provided means for stopping the output of the speed conversion means when the control means extracts non-recordable information such as the video / audio / data. An apparatus for receiving a digital broadcast signal.

The figure which shows the structure of the 1st Example of this invention. Diagram showing packet structure and packet multiplexing method The figure which shows the procedure of program presentation The figure which shows the procedure of program presentation The figure which shows the structure of the 2nd Example of this invention. The figure which shows the procedure of program presentation The figure which shows the structure of the 3rd Example of this invention. The figure which shows the structure of the 4th Example of this invention. The figure which shows the structure of the 5th Example of this invention. The figure which shows the structure of the 6th Example of this invention. The figure which shows the structure of the 7th Example of this invention. The figure which shows the structure of the 8th Example of this invention. The figure which shows one structure of the 2nd demultiplexing means of this invention The figure which shows one structure of the 2nd demultiplexing means of this invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 300 ... Antenna 301 ... Converter 302 ... Cable 401 ... Tuner 402 ... QPSK demodulation circuit 403 ... FEC 404 ... Demultiplexing part 405 ... MPEG2 decoder 406 ... Video encoder 407 ... D / A converter 408 ... OSD 409 ... Control means 410 ... Television 413 ... second demultiplexing unit 423 ... recording / reproducing means 433 ... PID rewriting means
453 ... Packet insertion means 414, 424 ... Switch 415434 ... RAM 419 ... ROM

Claims (8)

A digital broadcast signal receiving device,
Receiving means for receiving a digital broadcast signal including a plurality of programs obtained by multiplexing video signal, audio signal , PMT (Program Map Table), and program related information which is information related to the program;
Demodulation means for demodulating the received digital broadcast signal;
From the digital broadcast signal demodulated by the demodulating means, separating means for separating the video signal associated with a desired program, the audio signal, PMT, the 及 beauty program related information,
Instead of the predetermined value PID that was set when the digital broadcast signal was received, packet creation means for creating a packet in which a specific value PID different from the predetermined value is set;
Output means for outputting the PID of the specific value together with the video signal, audio signal , PMT, and program related information related to the desired program separated by the separating means;
A digital broadcast signal receiving apparatus comprising: A digital broadcast signal receiving method in a digital broadcast signal receiver,
Receive a digital broadcast signal including a plurality of programs in which video signal, audio signal , PMT (Program Map Table), and program related information that is information about the program are multiplexed,
Demodulating the received digital broadcast signal;
From the demodulated digital broadcast signal, a video signal related to a desired program, the audio signal, PMT, the 及 beauty program related information are separated,
Instead of the predetermined value PID that was set when the digital broadcast signal was received, create a packet with a specific value PID that is different from the predetermined value,
Outputting the PID of the specific value together with the video signal, the audio signal , the PMT, and the program related information related to the separated desired program;
And a digital broadcast signal receiving method. A digital signal processor,
An input means for inputting a digital signal including a plurality of programs in which program related information, which is information related to a video signal, audio signal , PMT (Program Map Table), and program is multiplexed;
From the digital signal inputted to said input means, a separation means for separating the video signal associated with a desired program, the audio signal, PMT, the 及 beauty program related information,
Instead of the predetermined value PID that was set when the digital signal was input, packet creation means for creating a packet in which a specific value PID different from the predetermined value is set;
Output means for outputting the PID of the specific value together with the video signal, audio signal , PMT, and program related information related to the desired program separated by the separating means;
A digital signal processing apparatus comprising: A digital signal processing method in a digital signal processing apparatus, comprising:
Accepts input of digital signals including video signals, audio signals , PMT (Program Map Table), and multiple programs in which program related information, which is information related to programs, is multiplexed,
From the input digital signal, a video signal related to a desired program, the audio signal, PMT, the 及 beauty program related information are separated,
Instead of the predetermined value PID that was set when the digital signal was input, create a packet with a specific value PID that is different from the predetermined value,
Outputting the PID of the specific value together with the video signal, the audio signal , the PMT, and the program related information related to the separated desired program;
A digital signal processing method. A digital broadcast signal transmission / reception system including a transmission device and a reception device,
The transmitter is
Video signal, audio signal, PMT (Program Map Table), and transmission means for transmitting a digital broadcast signal including a plurality of programs in which program-related information that is information related to the program is multiplexed,
The receiving device is:
Receiving means for receiving the digital broadcast signal; and
Demodulation means for demodulating the received digital broadcast signal;
Separating means for separating a video signal, audio signal, PMT, and program related information related to a desired program from the digital broadcast signal demodulated by the demodulating means;
Instead of the predetermined value PID that was set when the digital broadcast signal was received, packet creation means for creating a packet in which a specific value PID different from the predetermined value is set;
An output unit that outputs the PID of the specific value together with the video signal, the audio signal, the PMT, and the program related information related to the desired program separated by the separating unit;
With
A digital broadcast signal transmission / reception system. A digital broadcast signal transmission / reception method comprising:
A digital broadcast signal including a plurality of programs in which program related information, which is information related to a video signal, audio signal, PMT (Program Map Table), and a program is multiplexed, is transmitted.
Receiving the digital broadcast signal;
Demodulating the received digital broadcast signal;
Separating a video signal, an audio signal, a PMT, and program related information related to a desired program from the demodulated digital broadcast signal;
Instead of the predetermined value PID that was set when the digital broadcast signal was received, create a packet with a specific value PID that is different from the predetermined value,
Outputting the PID of the specific value together with the video signal, the audio signal, the PMT, and the program related information related to the desired program that has been separated,
A digital broadcast signal transmission / reception method. A digital signal transmission / reception system including a transmission device and a reception device,
The transmitter is
Video signal, audio signal, PMT (Program Map Table), and output means for outputting a digital signal including a plurality of programs in which program-related information that is information about the program is multiplexed,
The receiving device is:
Input means for inputting the digital signal;
Separating means for separating a video signal, an audio signal, a PMT, and program-related information related to a desired program from the digital signal input to the input means;
Instead of the predetermined value PID that was set when the digital signal was input, packet creation means for creating a packet in which a specific value PID different from the predetermined value is set;
An output unit that outputs the PID of the specific value together with the video signal, the audio signal, the PMT, and the program related information related to the desired program separated by the separating unit;
With
A digital signal transmission / reception system characterized by the above. A digital signal transmission / reception method comprising:
Output a digital signal including a video signal, an audio signal, a PMT (Program Map Table), and a plurality of programs obtained by multiplexing program-related information,
Accepts input of the digital signal;
Separating the video signal, audio signal, PMT, and program related information related to a desired program from the input digital signal;
Instead of the predetermined value PID that was set when the digital signal was input, create a packet with a specific value PID that is different from the predetermined value,
Outputting the PID of the specific value together with the video signal, the audio signal, the PMT, and the program related information related to the desired program that has been separated,
A digital signal transmission / reception method.

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