JP2010051007A - Receiving apparatus and receiving method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a digital broadcast receiving and recording/reproducing apparatus which reproduces a recorded program immediately without performing a complicated operation. <P>SOLUTION: The recorded program is immediately reproduced automatically without requiring the user to do the complicated operation for reproduction by receiving a digital signal in which a video signal, an audio signal, a PMT and program-related information are multiplexed for transmission, separating the received signal into the video signal, the audio signal, the PMT and the program-related information which are related to a desired program by a separating means and then recording only the information related to the desired program. <P>COPYRIGHT: (C)2010,JPO&INPIT

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. . The prior art comprises 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. A receiving system is described. 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. In other words, a method of reproducing a desired program immediately recorded by simply pressing one switch as in the analog type VTR described above cannot 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.

In order to solve the above-mentioned problem, for example, time information necessary for decoding a video signal, an audio signal and a digital signal is separated from a digital signal in which a plurality of programs are multiplexed in a packet format. It is sufficient to extract only the video signal, audio signal and time information related to.

  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.

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

  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, an example in which the antenna 300 receives a satellite broadcast radio wave digitally modulated by a quadrature phase shift keying (hereinafter abbreviated as QPSK) method is shown, but this limits the transmission method used in the present invention to satellite broadcast. The modulation method is not limited to the QPSK method. In addition, an example using the international standard Moving Picture Experts Group 2 (hereinafter abbreviated as MPEG2) is shown as a signal compression and decompression method, but this does not limit the signal compression and decompression method used in the present invention to MPEG2. Absent.

  In FIG. 1, 300 is an antenna, 301 is a converter that converts received radio waves into a tuner input signal, 302 is a cable, 401 is a tuner, 402 is a QPSK demodulator, and 403 is a forward error correction that corrects an error in a signal accompanying transmission. (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, 405 is an MPEG2 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, and 434 and 415 are developed by the first demultiplexer 404 and the MPEG2 decoder 405, respectively. RAM (Random Access Memory) 419 for storing the operation program of the control means 409 (ROM) Read Only Memory).

  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 input to the MPEG2 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 controlled by the control means 409 that operates according to a program stored in the ROM 419.

  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. The signal input to the first demultiplexing unit 404 has 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, a desired knitting channel is searched from the PAT received in step 202. 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, a PMT (Packet ID) of a PMT (Program Map Table) in which PIDs such as video and audio constituting the organization channel input in Step 207 are described is acquired from the PAT, and the PMT having the PID is obtained. Receive.

  However, the PMT is one of the PSI tables, and the PID is a packet identifier included in the packet header. Since the PMT describes PIDs such as PCR (Program Clock Reference) indicating the video, audio and time information constituting each organization channel included in the TS being received, the video and audio of the desired program in step 208 PID such as PCR is acquired. Thereafter, the obtained PID is set in the first demultiplexing means 404 in step 209, and a desired video and audio stream is received and input to the MPEG2 decoder 405 for decoding.

  The video signal decoded by the operation described above is processed by the NTSC encoder via the OSD 408 and converted into an analog signal, and the audio signal is converted into an analog signal by the D / A converter 407 and input to the television 410. The viewer can present the desired program.

  Next, a procedure for recording the received signal in the recording / reproducing means 423 through the switch 414 and the second demultiplexing unit 413 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, PCR (Program Clock Reference) which is data indicating time information required by the MPEG2 decoder 405, and program related information Of these, only information relating to a desired program (currently viewed program) is extracted.

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

  Further, 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, the PID indicating program-related information is indicated by a specific value regardless of the program, and this embodiment will be described based on this assumption.

  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 PID of the PMT in which the PID of the recorded program such as video and audio is described can be obtained 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 eliminates the procedure for acquiring the organization channel from the desired program-related information in step 441 in the procedure shown in FIG. 4, and the organization channel information matches the PMT in which the PID described in the PAT is recorded. It is checked in step 601 whether or not to do so. 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. Thereby, the configuration of the second demultiplexing unit 413 can be further simplified than in the case of the embodiment of FIG.

  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 information is extracted by the PID rewriting means 433. The PID is rewritten to a specific value set from the control unit 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 acquires the PID of each piece of information such as desired PCR, video, audio, etc. and extracts the PCR, video, audio, etc. and inputs them to the packet insertion means 453. . The packet insertion unit 453 creates and inserts a packet describing the PID such as PCR, video, audio, etc. acquired by the second demultiplexing unit 413 in the input signal from the second demultiplexing unit 413, and records / reproduces the unit 423. To record.

  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 the 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 may be assigned the same PID as the PAT defined in the MPEG2 standard. The MPEG2 standard stipulates that the PID of the PAT is a specific value. Therefore, when the first demultiplexing unit 404 processes the signal reproduced from the recording / reproducing unit 423, the control unit 409 First, the operation described with reference to FIG. 10 can be realized by setting in advance to control the first demultiplexing unit 404 so as to extract a packet having the same PID as the PAT.

  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 and 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. 11, for example, when a recording unit having an upper limit on the transmission rate of a multiplexed signal that can be recorded is used as the recording / reproducing unit 423, a multiplexed signal to be recorded is set in advance. As long as the transmission rate does not exceed the specified transmission rate, additional information such as program information can be recorded along with information such as video and audio that make up the program to increase added value, and the transmission rate of the multiplexed signal to be recorded is set in advance. The program information can be recorded by stopping the extraction of the information that is not directly related to the presentation of the program contents even when the program content is exceeded.

  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. However, a part of the second demultiplexing means 413 (such as the speed converting means 4132) from 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 unit 404 and the second demultiplexing unit 413 have been described as separate circuits. However, these two units may be the same circuit block.

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

(1) In a system in which video, audio, data, etc. are all multiplexed as digital information into a single bit string in a predetermined packet format,
Channel decoding means for receiving at least the transmitted digital information and demodulating it into a bit string of a predetermined format;
First packet separation means for extracting a designated packet from the bit string;
Source decoding means for decoding information such as video / audio / data output from the packet separation means and outputting as a television signal;
A control means for analyzing the information packet output from the first packet separation means and controlling the system;
A second packet separation means for newly extracting a designated packet from the output bit string of the channel decoding means;
Speed conversion means for converting the transmission rate of the bit string output from the second packet separation means;
An interface means for converting the output of the speed converting means into an input / output format of an external recording / reproducing device;
An apparatus for receiving a digital broadcast signal, characterized in that an input bit string from the interface means is output to the first packet separating means and a video / audio / data signal can be decoded as a television signal.
(2) In the receiver of (1) above,
The second packet separating means includes a PAT (Program Association Table) packet defined by the MPEG2 standard, one or a plurality of PMT (Program Specific Information) packets, and a packet of video, audio, data, etc. defined by the PMT. An apparatus for receiving a digital broadcast signal, characterized in that the apparatus is configured to extract a signal.
(3) In the digital broadcast signal receiver of (2) above,
A digital circuit characterized in that, when a bit string is input from an external recording / reproducing device, the control means includes means for comparing the PAT and the PMT, and is controlled to determine video / audio / data to be reproduced. Broadcast signal receiver.
(4) In the digital broadcast signal receiver of (1) above,
The second packet separation means extracts at least a PMT packet defined in the MPEG2 standard and a video / audio / data packet defined in the PMT packet, and a packet ID of the PMT packet is predetermined. An apparatus for receiving a digital broadcast signal, characterized in that means for changing to a value is provided.
(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 controls to determine video / audio / data to be played back according to the PMT. Digital broadcast signal receiver.
(6) In the digital broadcast signal receiver of (1) above,
The second packet separating means includes means for extracting a packet such as video / audio / data and changing a packet ID of the video / audio / data to a predetermined value. Broadcast signal receiver.
(7) In the digital broadcast signal receiver of (6) above,
When the bit string is input from an external recording / reproducing device, the control means is configured to control so that the first packet separation means extracts video / audio / data having a predetermined packet ID. An apparatus for receiving a digital broadcast signal.
(8) In the digital broadcast signal receiver of (1) above,
The second packet separating means is configured to extract a packet of video / audio / data and insert a new packet designating a packet ID of the video / audio / data, etc. Broadcast signal receiver.
(9) In the digital broadcast signal receiver of (8) above,
A digital transmission / reception receiving apparatus characterized in that a new packet for designating a packet ID of video / audio / data has the same packet ID as PAT defined in the MPEG2 standard.
(10) In the digital broadcast signal receiver of (8) above,
When a bit string is input from an external recording / reproducing device, the control unit is configured to control so that a new packet specifying a packet ID of the video / audio / data is extracted by the first packet separation unit. A receiver for receiving a digital broadcast signal.
(11) In the digital broadcast signal receiver of (1) above,
The second packet separation means extracts at least a PAT packet, a PMT packet defined by the MPEG2 standard, and a packet such as video / audio / data defined by the PMT, and contents of the video / audio / data, etc. An apparatus for receiving a digital broadcast signal, characterized in that a program information packet describing a message is extracted.
(12) In the digital broadcast signal receiver of (11) above,
When a bit string is input from an external recording / playback device, the control means extracts the program information packet in advance, and the video / audio / data packet extracted by the first packet separation means based on the program information packet. An apparatus for receiving a digital broadcast signal, characterized in that it is controlled to be determined.
(13) In the digital broadcast signal receiver of (11) above,
An apparatus for receiving a digital broadcast signal, wherein the program information packet is a specific program information packet in which information of a packet such as video / audio / data extracted by the second packet separating means is described.
(14) In the digital broadcast signal receiver of (13) above,
When the bit string is input from the external recording / reproducing device, the control means extracts the specific program information packet in advance, and the video / audio / data is extracted by the first packet separation means 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 such as.
(15) In a system in which video, audio, data, etc. are all multiplexed as digital information into a single bit string in a predetermined packet format,
Channel decoding means for receiving at least the transmitted digital information and demodulating it into a bit string of a predetermined format;
First packet separation means for extracting a packet designated from the bit string, source decoding means for decoding information such as video / audio / data output from the packet separation means, and outputting as a television signal;
A control means for analyzing the information packet output from the first packet separation means and controlling the system;
A second packet separation means for newly extracting a designated packet from the output bit string of the channel decoding means;
Speed conversion means for converting the transmission rate of the bit string output from the second packet separation means;
Digital recording / reproducing means for recording / reproducing the output of the speed converting means as a digital signal is provided, and an input bit string from the digital recording / reproducing means is output to the first packet separating means, and video / audio / data A digital broadcast signal receiving and recording / reproducing apparatus characterized in that a signal can be decoded as a television signal.
(16) In the digital broadcast signal receiving and recording / reproducing apparatus of (15),
The second packet separation means is configured to extract a PAT packet, a PMT packet defined by the MPEG2 standard, and a packet such as video / audio / data defined by the PMT. Receiving and recording / reproducing device.
(17) In the digital broadcast signal receiving and recording / reproducing apparatus of (16),
A digital circuit characterized in that, when reproducing a bit string from the recording / reproducing means, the control means includes means for comparing the PAT and the PMT, and controls to determine video / audio / data to be reproduced, etc. Broadcast signal reception and recording / playback device.
(18) In the digital broadcast signal receiving and recording / reproducing apparatus of (15),
The second packet separation means extracts at least a PMT packet defined in the MPEG2 standard and a video / audio / data packet defined in the PMT packet, and a packet ID of the PMT packet is predetermined. An apparatus for receiving and recording / reproducing a digital broadcast signal, characterized in that means for changing the value is provided.
(19) In the digital broadcast signal receiving and recording / reproducing apparatus of (18),
When reproducing the bit string from the recording / reproducing means, the control means extracts the PMT having a predetermined packet ID, and is configured to control to determine video / audio / data to be reproduced according to the PMT. A digital broadcast signal receiving and recording / reproducing apparatus.
(20) In the digital broadcast signal receiving and recording / reproducing apparatus of (15),
The second packet separating means includes means for extracting a packet such as video / audio / data and changing a packet ID of the video / audio / data to a predetermined value. Broadcast signal reception and recording / playback device.
(21) In the digital broadcast signal receiving and recording / reproducing apparatus of (20),
The digital broadcast is characterized in that when the bit string is reproduced from the recording / reproducing means, the control means controls the video / audio / data having a predetermined packet ID to be extracted by the first packet separating means. Signal receiving and recording / reproducing device.
(22) In the digital broadcast signal receiving and recording / reproducing apparatus of (15),
The second packet separating means is configured to extract a packet of video / audio / data and insert a new packet designating a packet ID of the video / audio / data, etc. Broadcast signal reception and recording / playback device.
(23) In the digital broadcast signal receiving and recording / reproducing apparatus of (22),
An apparatus for receiving and recording / reproducing a digital broadcast signal, wherein a new packet designating a packet ID for video / audio / data has the same packet ID as PAT defined in the MPEG2 standard.
(24) In the digital broadcast signal receiving and recording / reproducing apparatus of (22),
When the bit string is reproduced from the recording / reproducing means, the control means is configured to control so that a new packet specifying a packet ID of the video / audio / data is extracted by the first packet separating means. A digital broadcast signal receiving and recording / reproducing apparatus.
(25) In the digital broadcast signal receiving and recording / reproducing apparatus of (15),
The second packet separation means extracts at least a PAT packet, a PMT packet defined by MPEG2 and a packet such as video / audio / data defined by the PMT, and the contents of the video / audio / data, etc. An apparatus for receiving and recording / reproducing a digital broadcast signal, characterized in that a program information packet to be described is extracted.
(26) In the digital broadcast signal receiving and recording / reproducing apparatus of (25),
At the time of reproducing the bit string from the recording / reproducing means, the control means extracts the program information packet in advance, and the video / audio / data packet extracted by the first packet separating means based on the program information packet. An apparatus for receiving and recording / reproducing a digital broadcast signal, characterized in that the control is made so as to determine.
(27) In the digital broadcast signal receiving and recording / reproducing apparatus of (25),
In particular, the program information packet is a specific program information packet describing packet information such as video / audio / data extracted by the second packet separating means, and receiving / recording / reproducing apparatus for digital broadcast signal .
(28) In the digital broadcast signal receiving and recording / reproducing apparatus of (27),
When reproducing the bit string from the recording / reproducing means, the control means extracts the specific program information packet in advance, and the video / audio / data extracted by the first packet separating means based on the specific program information packet An apparatus for receiving and recording / reproducing a digital broadcast signal, characterized in that control is performed so as to determine a packet such as.
(29) In the digital broadcast signal receiver of (1) above,
An apparatus for receiving a digital broadcast signal, comprising: means for stopping output of the interface means when the control means extracts unrecordable information such as the video / audio / data.
(30) In the digital broadcast signal receiver of (1) above,
An apparatus for receiving a digital broadcast signal, comprising means for stopping the function of the second packet extracting means when the control means extracts non-recordable information such as video / audio / data.
(31) In the digital broadcast signal receiving and recording / reproducing apparatus of (15),
An apparatus for receiving and recording / reproducing a digital broadcast signal, characterized in that a means for stopping the output of the speed converting means is provided when the control means extracts unrecordable information such as the video / audio / data.
(32) In the digital broadcast signal receiving and recording / reproducing apparatus of (15),
Receiving, recording, and reproduction of a digital broadcast signal, characterized in that a means for stopping the function of the second packet extracting means is provided when the control means extracts unrecordable information such as video, audio, data, etc. apparatus.
(33) In the digital broadcast signal receiver of (1) above,
The second packet separation means extracts at least a PAT packet, a PMT packet defined by the MPEG2 standard, and a video / audio / data packet defined by the PMT, and the contents of the video / audio / data, etc. An apparatus for receiving a digital broadcast signal, characterized in that a program information packet to be described is extracted, and means for detecting a transmission rate of a signal output from the second packet separation means is provided.
(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 of (15),
The second packet separation means extracts at least a PAT packet, a PMT packet defined by the MPEG2 standard, and a video / audio / data packet defined by the PMT, and the contents of the video / audio / data, etc. An apparatus for receiving and recording / reproducing a digital broadcast signal, characterized in that a program information packet to be described is extracted and a means for detecting a transmission rate of a signal output from the second packet separating 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 receiver of (1) above,
An apparatus for receiving a digital broadcast signal, comprising: means for stopping output of the speed conversion means when the control means extracts unrecordable information such as the video / audio / data.

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 (4)

A digital broadcast signal receiving device,
Receiving means for receiving a digital broadcast signal in which program related information, which is information relating to a video signal, audio signal, PMT (Program Map Table), and program, is multiplexed;
Separating means for separating a video signal, an audio signal, a PMT, and program related information related to a desired program from the digital broadcast signal received by the receiving means;
Output means for outputting 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 receiving apparatus,
Receives a digital broadcast signal in which video-related signals, audio signals, PMT (Program Map Table), and program-related information that is information related to the program are multiplexed,
Separating a video signal, an audio signal, a PMT, and program-related information related to a desired program from the received digital broadcast signal;
Outputting a video signal, an audio signal, a PMT, and program related information related to the desired program that has been separated,
And a digital broadcast signal receiving method. A digital signal processor,
An input means for inputting a digital signal obtained by multiplexing a video signal, an audio signal, a PMT (Program Map Table), and program-related information that is information about the program;
Separating means for separating a video signal, audio signal, PMT, and program related information related to a desired program from the digital signal input to the input means;
Output means for outputting 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 the input of digital signals that are multiplexed video information, audio signals, PMT (Program Map Table), and program related information that is information about the program,
Separating the video signal, audio signal, PMT, and program related information related to the desired program from the input digital signal;
Outputting a video signal, an audio signal, a PMT, and program related information related to the desired program that has been separated,
A digital signal processing method.

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