WO2004045207A1 - 記録再生装置および方法 - Google Patents
記録再生装置および方法 Download PDFInfo
- Publication number
- WO2004045207A1 WO2004045207A1 PCT/JP2003/014237 JP0314237W WO2004045207A1 WO 2004045207 A1 WO2004045207 A1 WO 2004045207A1 JP 0314237 W JP0314237 W JP 0314237W WO 2004045207 A1 WO2004045207 A1 WO 2004045207A1
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- WIPO (PCT)
- Prior art keywords
- packet
- recording
- information
- information table
- program
- Prior art date
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/79—Processing of colour television signals in connection with recording
- H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
- H04N9/804—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components
- H04N9/8042—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components involving data reduction
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
- G11B20/00137—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to contents recorded on or reproduced from a record carrier to authorised users
- G11B20/00159—Parental control systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
- H04H60/27—Arrangements for recording or accumulating broadcast information or broadcast-related information
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
- H04H60/35—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users
- H04H60/47—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users for recognising genres
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/10527—Audio or video recording; Data buffering arrangements
- G11B2020/10537—Audio or video recording
Definitions
- the present invention relates to a digital broadcast receiving system, and more particularly to a digital broadcast receiving system having a function of recording and reproducing digital information. That is, the present invention relates to a recording / reproducing apparatus and method, a program for realizing the recording / reproducing method, and a recording medium on which a program is recorded. Background art
- FIG. 8 is a block diagram showing a conventional digital broadcast receiving system having a recording / reproducing function described in Japanese Patent Application Publication No. 2000-121843.
- the output of the reception demodulation unit 101 is connected to the input of the packet filter 102, one input of the changeover switch 105, and the input of the information table extractor 106, respectively.
- the output of the packet filter 102 is connected to the input of the information table replacer 103.
- the output of the information table replacement unit 103 is connected to the input of the recording / reproducing device 104.
- the output of the recording / reproducing device 104 is connected to the other input of the switching switch 105.
- the output of the information tape extractor 106 is connected to the input of the control microcomputer 108.
- the output of the control microcomputer 108 is the reception demodulation unit 101, packet fill 102, information tape generator 107, recording / reproducing device 104, demultiplexer 110, and AV decoder. 1 1 1 Connected to each input.
- the output of the information table generator 107 is connected to the input of the information table replacer 103.
- the output of the switch 105 is connected to the input of the demultiplexer 110.
- False rumor The output of the multiplexer 110 is connected to the input of the AV decoder 111.
- the output of the AV decoder 111 is connected to the input of the monitor 112.
- the output of the user interface unit 109 is connected to the input of the control microcomputer 108.
- the control microcomputer 108 switches the switching switch 105 to the reception demodulation unit 101 side.
- the reception demodulation unit 101 demodulates the received digital broadcast signal and outputs it as a packet stream of the MPEG-TS (transport stream) system.
- the packet stream includes packets for transmitting image data and audio data of a program (hereinafter, referred to as AV transmission packets) and packets for transmitting various information tables (hereinafter, information table transmission). This is called a packet for use.
- the demultiplexer 110 and the AV decoder 111 process the packet stream according to the instruction from the control microcomputer 108, and control the electronic program guide (EPG) transmitted at that time. It is constructed so that the microcomputer 108 can process it.
- the EPG is presented to the user as graphical information displayed on the monitor 112 or in the user interface unit 109.
- the user refers to the presented EPG and selects an arbitrary program to be recorded from a plurality of programs. Recording programs can be selected not only for programs currently being broadcast, but also for programs scheduled to be broadcast in the future.
- the control microcomputer 108 recognizes the current time and performs the operation described below when the broadcast time of the program arrives.
- the control microcomputer 108 identifies the recorded program based on the broadcast time of the program and the value of program-number, which is one of the information described in the program arrangement information table.
- the packet stream output from the reception demodulation unit 101 is input to the packet filter 102 and the information table extractor 106, respectively.
- the information table extractor 106 extracts various information tables from the input packet stream and inputs them to the control microcomputer 108.
- the control microcomputer 108 receives the input The specific operation of determining whether or not the recorded program is currently being broadcast based on the obtained information table will be described below. First, the control microcomputer 108 refers to the event information section in the EIT (Event Information Table) containing detailed information of each program, reads the program-number value described there, and executes the program. Identify.
- EIT Event Information Table
- running_status which is one of the information described in the EIT
- the control microcomputer 108 sets the specified program in order to reliably record from the beginning of the program. A few seconds to a few minutes before the start time, based on the next event information described in the EIT, it is checked whether the specified program is transmitted as scheduled, and recording errors are prevented.
- the control microcomputer 108 instructs the packet filter 102 of the PID value of the packet to be passed.
- the PID value specified here is the PID value of the packet that transmits the video data related to the recorded program, the PID value of the packet that transmits the audio data related to the recorded program, and the PID value of the packet that transmits other program-related information according to the instruction.
- a PSI Program Specific Specific Information
- the PID value of the packet transmitting the table For a packet (for example, a null packet) for which it is determined that recording is unnecessary, it is not necessary to pass through the packet filter 102, so the PID value is not indicated by the control microcomputer 108. If the recording capacity of the recording medium of the recording / reproducing device 104 is sufficiently large, image data or the like relating to a program other than the recorded program may be passed. In addition, regarding the video data transmission packet, if a plurality of video packets are included by the P-layer transmission, this is described in the PMT (Program Map Table). A decision is made as to whether or not to record a plurality of moving images according to the instruction of the user.
- PMT Program Map Table
- the information table generator 107 generates a new: PSI table corresponding to the new packet stream according to an instruction from the control microcomputer 108.
- a plurality of programs are included in the packet stream output from the reception demodulation unit 101, and this is the case where only one of them is to be recorded.
- NIT itself is treated as an option in the MPEG standard, so it is not always necessary to transmit and record it through the packet filter 102. Even if the NIT is filled by the packet header 102, it is considered that the absence of the NIT has little effect on other devices.
- the information table generator 107 generates a table (ie, NIT) whose program number is “0” together with the recorded program information, and the information table replacement unit 103 generates a packet stream. It may be inserted inside. This makes it possible to support digital information processing systems that require the presence of NIT.
- the new PSI table generated by the information table generator 107 is input to the information table replacer 103.
- the information table replacement unit 103 replaces the PSI table included in the packet stream that has passed through the packet stream 102.
- consistency between the PSI table and the packet stream after passing through the packet filter 102 is ensured.
- the new PAT Program Association Table
- the data of the descriptor portion related to programs other than the recorded programs has been deleted, so the total packet stream The amount of data is compressed. Also, depending on the amount of data in the deleted descriptor part, the number of packets per se is also reduced.
- the new packet stream generated in this way is sent to the recording / reproducing device 104, and is recorded in the recording medium included in the recording / reproducing device 104.
- On record For example, an index area different from the area where the stream is continuously recorded is provided, and information on the position in the recording medium where the program is recorded is recorded in this index area, thereby recording the stream.
- the program can be played back.
- the recording medium is a fixed disk device or a semiconductor memory
- the index area can be provided at any place other than the continuous recording area where the program data is recorded.
- the recording medium is a tape medium
- an electronic storage device built in a tape housing such as a digital video cassette or any place other than the continuous recording area (for example, at the beginning of a tape). It can be provided within.
- information on the above position is repeatedly recorded during the program data as a data of another format that can be easily distinguished from the transport packet transmitting the program data. It is also possible to increase the random accessibility of the tape.
- This series of recording operations can be performed without using a signal line connecting the reception demodulation unit 101, the switching switch 105, and the demultiplexer 110, so that the user can watch programs other than the recording program.
- the reception / demodulation unit 101 needs to process a plurality of streams via a plurality of transbonders. Therefore, in this case, the reception / demodulation unit 101 has a function of receiving a plurality of channels and a function of distributing the plurality of transport streams to the information table extractor 106 and the demultiplexer 110. Must have.
- the control microcomputer 108 updates the list of the recorded programs graphically displayed on the monitor 112, for example. As a result, it becomes possible for the user to instruct the user to reproduce the recorded program.
- the user designates a program to be reproduced to the control microcomputer 108 via the user interface unit 109.
- the control microcomputer 108 starts reading out desired program data from the recording medium of the recording / reproducing device 104 by referring to the information on the recording position of the program data recorded in the index area. .
- the control microcomputer 108 switches the switching switch 105 to the recording / reproducing device 104 side. As a result, the read playback stream is transmitted via the switch 105
- the data is transmitted to the demultiplexer 110 and the AV decoder 111.
- the control microcomputer 108 controls the demultiplexer 110 and the AV decoder 111, and displays the reproduced program on the monitor 112.
- the digital information that reaches the demultiplexer 110 during playback of a recorded program contains program information such as the PSI table and video / audio data, but does not include other related information such as EPG. Not.
- program information such as the PSI table and video / audio data
- other related information such as EPG.
- the control microcomputer 108 controls the processing of related information other than the program information to be stopped during the reproduction of the recorded program.
- the provision of the PSI template replacement mechanism allows only the desired program to be recorded in the recording / reproducing apparatus while maintaining the MPEG standard.
- the recording efficiency of the recording / reproducing device 104 can be improved.
- the recording efficiency is improved by constructing a desired program from a broadcast packet stream including a plurality of programs by replacing only the information table transmission packet and recording the program in a recording / reproducing apparatus.
- the AV data bucket that is dominant in recording efficiency is diverted from the original packet stream as it is.
- parental control is set in accordance with the age of the user, and so-called parental viewing control is realized by linking the parental rate data that inserts into the broadcast packet stream and the receiver. ing. It is desirable that parental viewing restrictions be applied even when a program that has been recorded once is reproduced. However, if a digital broadcast is once decoded and then re-encoded and digitally recorded, the detailed information on the program and the information on the age restriction in the original digital broadcast will be lost. In some cases. (How to solve it)
- a recording / reproducing apparatus is a recording apparatus for recording a packet stream including an AV transmission packet and an information table bucket for managing the AV transmission packet, wherein the first packet stream is an AV packet.
- a demultiplexer for separating transmission packets and information table packets, an AV decoder for decoding AV transmission packets and outputting AV data, and a second AV transmission for encoding AV data.
- An AV encoder that outputs a packet, an information table packet generator that constructs a second information table packet that manages a second AV transmission packet based on the information table packet, and a second AV A multiplexer for multiplexing the transmission packet and the second information table packet and outputting a second packet stream;
- a bucket bets stream re-encoding A digital tuner that receives and demodulates digital broadcasts; and a storage controller that records the first packet stream or the second packet stream.
- the demultiplexer controls the first packet stream or the storage control.
- the packet stream stored in the storage section is input. Either the packet stream sent by digital broadcast or the packet stream recorded in the storage control section is input, and the digital broadcast
- the management information contained in the information tape packet It can be included in the packet for the information table of the encoded bucket stream.
- the information table packet generator may be configured to transmit the copy control information or the viewing restriction information included in the first packet stream to the second information table packet or the second AV transmission packet. It is included in the management information for managing the packet. By this means, when the digital broadcast includes copy control information or viewing restriction information, such information can be included in the re-encoded packet stream.
- the recording / reproducing apparatus of the present invention collects program information from a first packet stream or a bucket stream stored in a storage control unit, and generates a program table by a program table data processing unit and a user who receives input from the user.
- the demultiplexer further includes an interface unit, and outputs the AV transmission bucket and the information table packet of the program selected by the user interface unit. Thus, a program to be re-encoded can be selected based on the created program table.
- the storage control section records either the first packet stream or the second packet stream based on an input from the user interface section.
- the packet stream output from the digital tuner and the re-encoded packet stream can be selectively recorded.
- the AV encoder determines the compression ratio based on an input from the user interface. This allows the user to specify the compression ratio of the AV encoder.
- the recording / reproducing method of the present invention is a recording method for recording a packet stream including an AV transmission packet and an information table packet for managing the AV transmission packet, wherein the first packet is recorded.
- a fifth step of multiplexing a second AV transmission packet and a second information table packet and outputting a second packet stream is a recording method for recording a packet stream including an AV transmission packet and an information table packet for managing the AV transmission packet, wherein the first packet is recorded.
- the sixth step of receiving and demodulating a digital broadcast and the seventh step of determining a recorded program from the digital broadcast received in the sixth step are as follows:
- the packet stream of the recorded program determined in the seventh step is separated into an AV transmission packet and an information table packet. (Effective effect than conventional technology)
- the recording / reproducing apparatus shown in the present invention is capable of decoding the digital broadcast once, encoding it again, and recording the digital broadcast on the recording medium. It is possible to save. If encoding is performed with a reduced resolution, recording efficiency can be increased. Also, when playing back a recorded program, a parental control operation based on age parental control at the time of broadcasting can be performed. In addition, it is possible to refer to the program contents at the time of reproduction, in response to a user request or automatically.
- FIG. 1 is a block diagram showing a recording / reproducing apparatus according to Embodiment 1 of the present invention.
- FIG. 2 is a diagram showing one example of the relationship between PAT and PMT in a broadcast stream.
- FIG. 3 is a diagram showing an example of the relationship between P AT and ⁇ generated by the recording operation of the recording / reproducing device of FIG.
- FIG. 4 is a flowchart showing an example of a recording operation of the recording / reproducing device according to Embodiment 1 of the present invention.
- FIGS. 5A, 5B, 5C, 5D, 5E, and 5F show the structure of the recording data generated by the recording operation of the recording / reproducing apparatus according to the first embodiment of the present invention.
- FIG. 5A, 5B, 5C, 5D, 5E, and 5F show the structure of the recording data generated by the recording operation of the recording / reproducing apparatus according to the first embodiment of the present invention.
- FIG. 6 is a diagram showing an example of a screen message displayed when a non-viewable program is played.
- FIG. 7 shows an example of a reproducing operation of the recording / reproducing apparatus according to Embodiment 1 of the present invention.
- FIG. 8 is a block diagram showing a conventional recording / reproducing apparatus. BEST MODE FOR CARRYING OUT THE INVENTION
- FIG. 1 is a block diagram showing a configuration of a recording / reproducing apparatus according to Embodiment 1 of the present invention.
- the output of the digital tuner 1 is connected to the first input of the switching switch 2.
- the output of the switch 2 is connected to the input of the demultiplexer 3.
- the output of the demultiplexer 3 is connected to the input of the AV decoder 4 and the input of the accumulation controller 7.
- the first output of AV decoder 4 is
- the second output of the AV decoder 4 is connected to the input of the monitor 10 while being connected to the input.
- the output of AV encoder 5 is connected to the input of multiplexer 6.
- the output of the multiplexer 6 is connected to the input of the accumulation controller 7.
- a first output of the storage controller 7 is connected to an input of the recording medium 11, and a second output of the storage controller 7 is connected to a second input of the changeover switch 2.
- the control microcomputer 8 is connected to the work memory 9 and each block through the microcomputer bus 12.
- the output of the user interface 12 is connected to the input of the control microcomputer 8.
- An age setting unit 13 for inputting the age of the viewer is connected to the control microcomputer 8 so that the viewing of the program whose viewing is restricted by the parental control is restricted.
- a broken line indicates that control is performed from the control microcomputer 8.
- the control microcomputer 8 switches the changeover switch 2 to the first input side which is an input from the digital tuner 1.
- Digital tuner 1 demodulates the received digital broadcast signal and outputs it as an MPEG-TS packet stream.
- the packet stream includes an AV transmission packet for transmitting image data and audio data of a program, and an information table transmission packet for transmitting various information tables.
- the A-V transmission packet contains the audio signal A and the video signal V.
- the information table transmission packet includes a PAT (Program Association Table), a PMT (Program Map Table), and an EIT (Event Information Table).
- the packet stream that has passed through the switching switch 2 is separated by the demultiplexer 3 into an AV transmission packet and an information tape transfer packet relating to a program specified by the user through the user interface unit 12 in advance.
- the AV transmission packet (A, V) is sent to the AV decoder 4, while the information table transmission packet (PAT, PMT, EIT) is controlled by the control microcomputer 8 and sent to the work memory 9.
- the AV decoder 4 outputs the AV data obtained by decoding the inputted AV transmission bucket to the AV encoder 5. At this time, if the decoded video is output to the monitor 10 at the same time, it is possible to view the video on the air immediately. By the way, the output from the AV decoder 4 to the AV encoder 5 and the output to the monitor 10 have different output terminals. ing. This is because, if the broadcast video is a high-definition video, the immediate viewing is performed with the high-definition video (output to monitor 10), and the self-recording is the same as the high-definition video (output to AV encoder 5). Or to reduce the resolution so that it can be performed with standard video.
- the output of the AV decoder 4 may be made one and input to the AV encoder 5 and the monitor 10, but in this case, the immediate viewing video and the recorded video have the same resolution.
- the AV encoder 5 encodes the input AV data into an elementary stream of the MPEG-TS system, and outputs AV transmission packets (A, V) to the multiplexer 6. At this time, it is possible to adjust the compression rate at the time of encoding through the user interface 12.
- the compression rate is set for the AV encoder 5 by the control microcomputer 8 ''
- the control microcomputer 8 and the work memory 9 store information for generating an information table bucket corresponding to the AV transmission packet output from the AV encoder 5. It composes a packet generation unit for tapes.
- the information table transmission packets (PAT, PMT, EIT) separated by the demultiplexer 3 and stored in the work memory 9 are analyzed by the control microcomputer 8 for the purpose of constructing a new packet stream.
- information Te one pull transmission packet (PAT,, P MT 5, SIT) is the (details will be described later) reconstructed as EIT (Event information Table) the contains program information of the number of double multiplexed I arsenide
- the SIT Select Information Table
- the reconstructed information table transmission packet is sent to the multiplexer 6, multiplexed with the AV transmission packet encoded and generated by the AV encoder 5, and stored as a packet stream of the MPEG-TS system. Output to 7.
- the accumulation control unit 7 records the input packet stream on the recording medium 11.
- the output of the demultiplexer 3 is also input to the accumulation control unit 7, so that the output of the demultiplexer 3 can be recorded as it is.
- the demultiplexer 3 sends out one of a plurality of programs included in the packet stream (a partial transport stream), or sends the stream to a packet stream. In some cases, all streams (full transport streams) included in the program are sent.
- the transmitted transport stream is temporarily stored in the storage control unit 7 and recorded on the recording medium 11.
- the control microcomputer 8 issues a command to the demultiplexer 3 to output without performing bucket separation or an instruction to output a packet related to a specific program. In this case, the user may select in advance through the user interface unit 12 whether to record the digital broadcast as it is or to record the digital broadcast once decoded and then re-encoded.
- FIG. 2 is a diagram showing the relationship between PAT and PMT when a packet stream including three programs, programs A, B, and C, is output from digital tuner 1.
- the PID of the PAT is defined as 0x0000 according to the MPEG-TS standard, but the PIDs of the other packets shown here are arbitrarily assigned in the broadcasting system.
- FIG. 3 shows an example of this.
- FIG. 3 shows a packet when only program A is recorded from the packet stream shown in FIG.
- the PID of the PMT is changed from 0x0100 to 0x0500, and the PIDs of the ES (Elementary Stream) constituting the program A are changed.
- Changing the PID of the PMT is performed by the control microcomputer 8; 1D changes are made by designating AV Encoder 5.
- the PID value of each PMT and each ES at this time to a series of values predetermined by the system, the PID value of the packet required at the time of decoding becomes obvious, and the packet for the information table is analyzed. The process of obtaining the PID value is not required.
- the program information and accompanying control information of the stream to be recorded are extracted from the program information and accompanying control information related to the recorded program contained in the bucket stream demodulated from the digital broadcast, and are multiplexed after encoding. (Selection_Information Table). This 3014237
- the parental rate information includes the same content in the conditional access system descriptor in the PMT.
- FIG. 4 is a flowchart illustrating an example of a recording operation of the recording / reproducing device according to Embodiment 1 of the present invention.
- a program to be recorded is determined (S1).
- it tunes to a digital broadcast including the program to be recorded, and demodulates it to generate an MPEG-TS packet stream (S2).
- each packet included in the bucket stream is separated by packet type based on the PID (S3). Packets not related to the recorded program are discarded here (S4).
- the AV transmission packet of the recorded program is subjected to AV decoding processing (S5), followed by AV encoding processing (S6) to generate a new AV transmission packet.
- the information transmission packet of the recorded program is reconstructed (S7), and multiplexed with the AV transmission packet described above to generate a new MPEG-TS packet stream for recording (S7). 8).
- the generated packet stream is recorded on a recording medium (S9).
- management information for the generated packet stream is created, and this management information is also recorded on the recording medium (S10). This completes the recording operation.
- FIG. 5 shows a structure of data (second and third packet streams) recorded on a recording medium in a recording operation of the recording / reproducing apparatus according to Embodiment 1 of the present invention.
- FIG. 5C in the volume space, management information on data in the volume and programs recorded by the recording operation are arranged for each program.
- Each recorded program is called a CLIP, which is managed by assigning a number to each recording unit.
- Figure 5B shows the details of the management information.
- a media general information for recording information across the entire media and CL IP management information, which is management information for each recorded CLIP, are arranged.
- Figure 5A shows the details of the CL IP management information.
- CLIP that records general information—General information, attribute information that records information about attributes such as video resolution and audio encoding mode included in CLIP, and random access to any position in the C LIP.
- An access map showing the relationship between the elapsed playback time of CLIP and the address in the recording medium is arranged.
- the attribute information includes information on the parental rate.
- Information on the parental rate includes a flag PRT indicating whether or not a parental rate descriptor is included, and age information AGE indicating an age limit.
- the age information AGE indicates, for example, “15” when the person is under 15 years of age. Note that the information on the Palen evening record may be only one of the flag: PRT and age AGE.
- CL IP is a packet stream of the MPEG-TS system, which is composed of multiple types of TS packets, and each packet is distinguished by a PID.
- the PAT and PMT include information for specifying a VIDEO and an AUDIO composing a program and an SIT packet including detailed information on the program.
- Figure 5E shows the details of the PMT. In particular, when the program is a viewing-restricted program, information on the above-mentioned parental rate is recorded in the conditional access system descriptor in the PMT.
- FIG. 5F shows the details of the SIT.
- the program is a viewing-restricted program
- information on the above-mentioned parental rate is recorded in the parental rate descriptor in the SIT.
- the same parental rate is described in PMT and SIT in the same program.
- the information regarding the parental rate described above may be included in at least one of the information table transmission buckets.
- the copy control information may be recorded in the same place as the information on the parental rate described above.
- the recording / reproducing apparatus configured as described above allows the digital broadcast to be decoded once, encoded again, and recorded on the recording medium, and the parental control information included in the broadcast is recorded.
- recording efficiency can be increased by encoding at a lower resolution.
- the control microcomputer 8 switches the switching switch 2 to the second input side which is an input from the accumulation control unit 7.
- the program guide data processing unit configured by the control microcomputer 8 creates a program guide from a list of programs recorded in the recording media 11, and displays the table on the monitor 10.
- the user selects a program to be reproduced through the user interface unit 12 and notifies the control microcomputer 8 of the selected program.
- the control microcomputer 8 specifies the reproduction start position of the recording medium 11 to the storage control unit ⁇ .
- the storage control section 7 reads out the data from the designated position on the recording medium 11 and outputs it as a packet stream.
- This packet stream passes through the changeover switch 2 and is input to the demultiplexer 3.
- the demultiplexer 3 extracts and outputs AV transmission packets (A, V) required for decoding by the AV decoder 4 from the packet stream.
- A, V AV transmission packets
- parental rate information is obtained by the control microcomputer 8 referring to the information table packet or management information separated from the AV transmission packet by the demultiplexer 3.
- the parental rate (hereinafter referred to as a program parental rate) is an age specified by a user in advance and set in the age setting unit 13, that is, a parental rate that can be played back by the recording / reproducing apparatus (hereinafter, a playable parental rate). If the parental rate of the program is higher than the parental rate (if the viewing age is higher than the age specified for the device), control is performed to stop playback.
- the microcomputer 8 instructs the AV decoder 4 to stop reproduction. At the same time, the control microcomputer 8 displays on the screen the message shown in Fig. 6, "You cannot view because of viewing age restriction. Please enter a password to cancel.” Notify
- the user's program content reference request instruction is sent to the control microcomputer 8 through the user interface unit 12.
- the control microcomputer 8 extracts the program information from the information table bucket separated from the AV transmission packet by the demultiplexer 3, and displays information such as a title and program details on the screen.
- the display of the program information may be automatically displayed under the control of the control microcomputer 8 at the start of the reproduction.
- FIG. 5 is a flowchart showing an example of a reproducing operation of the recording / reproducing apparatus according to Embodiment 1 of the present invention.
- the program recorded on the recording medium is presented to the user and the program to be reproduced is determined (S11).
- the management information of the program (CLIP) recorded on the recording medium the recording address of the designated reproduced program in the recording medium is obtained (S12).
- the program data is read from the recording medium from this address position (S13).
- the program parental rate which is the parental control level of the program, is extracted from the program data read from the recording medium (for example, from PMT or SIT) or from the management information (S14). .
- the extracted program parental rate is compared with the reproducible parental rate specified in advance in the age setting unit 13 of the reproducing apparatus (S15), and if the reproducible parental rate is equal to or higher than the parental rate. Judgment is made that playback is possible, AV decoding processing (S16) is performed, and the user can view the program. On the other hand, if it is determined that the program parental rate is higher and the reproduction is impossible, a message shown in FIG. 6 is displayed to the user and the AV decoding process is prohibited (S17).
- the recording / reproducing apparatus configured as described above, when decoding a digital broadcast once, re-encoding it, and reproducing a program recorded on a recording medium, performs a parental control operation in accordance with the age parental control at the time of broadcasting. Can be. In addition, it is possible to refer to the program content at the time of reproduction according to a user's request or automatically.
- the present invention It is possible to perform recording on a removable recording medium by the recording / reproducing apparatus of the first embodiment and transfer the removable recording medium to the above-mentioned reproducing apparatus to perform a similar reproducing operation. Further, the recording / reproducing apparatus according to Embodiment 1 of the present invention It is possible to connect a playback device with a digital interface such as IEEE 1394, transfer the playback stream, and perform the same playback operation on the playback device.
- the present invention may be realized by a computer program, which is transferred to another computer via an electric communication line, or is recorded and transferred to a recording medium such as a CD-ROM, so that it can be realized in another computer system. Can also be implemented. Industrial potential
- the recording / reproducing apparatus according to the present invention can be used in the field of data recording / reproducing.
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/533,585 US7711249B2 (en) | 2002-11-12 | 2003-11-10 | Recording/reproduction device and method |
AU2003277629A AU2003277629A1 (en) | 2002-11-12 | 2003-11-10 | Recording/reproduction device and method |
JP2004551206A JPWO2004045207A1 (ja) | 2002-11-12 | 2003-11-10 | 記録再生装置および方法 |
Applications Claiming Priority (2)
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JP2002-328045 | 2002-11-12 | ||
JP2002328045 | 2002-11-12 |
Publications (1)
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WO2004045207A1 true WO2004045207A1 (ja) | 2004-05-27 |
Family
ID=32310533
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PCT/JP2003/014237 WO2004045207A1 (ja) | 2002-11-12 | 2003-11-10 | 記録再生装置および方法 |
Country Status (5)
Country | Link |
---|---|
US (1) | US7711249B2 (ja) |
JP (1) | JPWO2004045207A1 (ja) |
CN (1) | CN100433822C (ja) |
AU (1) | AU2003277629A1 (ja) |
WO (1) | WO2004045207A1 (ja) |
Cited By (5)
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JP2008085722A (ja) * | 2006-09-28 | 2008-04-10 | Funai Electric Co Ltd | デジタル放送録画装置 |
JP2011223281A (ja) * | 2010-04-08 | 2011-11-04 | Sony Corp | 情報処理装置、情報処理システム、および情報処理方法、並びにプログラム |
JP2012005052A (ja) * | 2010-06-21 | 2012-01-05 | Toshiba Corp | 映像信号出力装置、映像信号出力方法、映像信号記録システム |
JP2012064293A (ja) * | 2010-09-17 | 2012-03-29 | Toshiba Corp | ストリームファイル管理装置及び方法 |
JP2012089951A (ja) * | 2010-10-15 | 2012-05-10 | Toshiba Corp | 再生装置及び再生方法 |
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GB0621775D0 (en) * | 2006-11-01 | 2006-12-13 | Sony Uk Ltd | Recording apparatus |
EP1936988A1 (fr) * | 2006-12-21 | 2008-06-25 | Nagravision S.A. | Procédé d'envoi de produits multimédia à au moins une unité multimédia et procédé de traitement de ces produits multimédia |
US8321449B2 (en) * | 2007-01-22 | 2012-11-27 | Jook Inc. | Media rating |
KR20090036326A (ko) * | 2007-10-09 | 2009-04-14 | 삼성전자주식회사 | 방송 스트림 녹화 방법 및 단말기 |
US9986293B2 (en) * | 2007-11-21 | 2018-05-29 | Qualcomm Incorporated | Device access control |
JP4609506B2 (ja) * | 2008-03-05 | 2011-01-12 | ソニー株式会社 | ネットワークシステム |
JP5025716B2 (ja) * | 2009-12-09 | 2012-09-12 | 三菱電機株式会社 | デジタル放送受信装置、デジタル放送受信方法及びコンピュータプログラム |
EP2884753A1 (en) * | 2013-12-13 | 2015-06-17 | Advanced Digital Broadcast S.A. | Method and system for digital video broadcasting service multiplexing |
JP7215415B2 (ja) * | 2017-05-31 | 2023-01-31 | ソニーグループ株式会社 | 情報処理装置、情報記録媒体、および情報処理方法、並びにプログラム |
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- 2003-11-10 JP JP2004551206A patent/JPWO2004045207A1/ja active Pending
- 2003-11-10 WO PCT/JP2003/014237 patent/WO2004045207A1/ja active Application Filing
- 2003-11-10 AU AU2003277629A patent/AU2003277629A1/en not_active Abandoned
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Also Published As
Publication number | Publication date |
---|---|
CN100433822C (zh) | 2008-11-12 |
AU2003277629A1 (en) | 2004-06-03 |
US7711249B2 (en) | 2010-05-04 |
CN1711765A (zh) | 2005-12-21 |
JPWO2004045207A1 (ja) | 2006-03-16 |
US20060140219A1 (en) | 2006-06-29 |
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