WO2004102962A1 - 情報出力装置及び情報出力方法、情報記録装置及び情報記録方法、情報出力用プログラム及び情報記録用プログラム並びに情報記録媒体 - Google Patents
情報出力装置及び情報出力方法、情報記録装置及び情報記録方法、情報出力用プログラム及び情報記録用プログラム並びに情報記録媒体 Download PDFInfo
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Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/02—Editing, e.g. varying the order of information signals recorded on, or reproduced from, record carriers
- G11B27/031—Electronic editing of digitised analogue information signals, e.g. audio or video signals
- G11B27/034—Electronic editing of digitised analogue information signals, e.g. audio or video signals on discs
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
- G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
- G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
- G11B27/30—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording
- G11B27/3027—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording used signal is digitally coded
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
- G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
- G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
- G11B27/32—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on separate auxiliary tracks of the same or an auxiliary record carrier
- G11B27/327—Table of contents
- G11B27/329—Table of contents on a disc [VTOC]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/433—Content storage operation, e.g. storage operation in response to a pause request, caching operations
- H04N21/4334—Recording operations
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- H—ELECTRICITY
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- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
- H04N21/4344—Remultiplexing of multiplex streams, e.g. by modifying time stamps or remapping the packet identifiers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
- H04N21/4345—Extraction or processing of SI, e.g. extracting service information from an MPEG stream
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
- H04N21/4363—Adapting the video stream to a specific local network, e.g. a Bluetooth® network
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- H—ELECTRICITY
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- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
- H04N21/845—Structuring of content, e.g. decomposing content into time segments
- H04N21/8456—Structuring of content, e.g. decomposing content into time segments by decomposing the content in the time domain, e.g. in time segments
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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
- H04N9/82—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only
- H04N9/8205—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only involving the multiplexing of an additional signal and the colour video signal
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- G—PHYSICS
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- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
- G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
- G11B2220/2537—Optical discs
- G11B2220/2562—DVDs [digital versatile discs]; Digital video discs; MMCDs; HDCDs
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/78—Television signal recording using magnetic recording
- H04N5/781—Television signal recording using magnetic recording on disks or drums
Definitions
- Information output device and information output method information recording device and information recording method, information output program, information recording program, and information recording medium
- the present application belongs to the technical field of an information output device and an information output method, an information recording device and an information recording method, an information output program, an information recording program, and an information recording medium.
- the present invention belongs to the technical field of an information recording apparatus, an information recording method, an information recording program therefor, and an information recording medium on which the information recording program is recorded, for recording the input recording information on a recording medium.
- Japanese Patent Application Laid-Open No. 11-239185 discloses a conventional method for detecting a change in a program as described above, which targets a so-called partial transport stream in the MPEG2 system. There is a technique described in.
- Patent Document 1 Japanese Patent Application Laid-Open No. 11-239185 (FIGS. 1 and 5) In the method described in Patent Document 1, so-called PSI (Program Specific Information) or SI
- PSI Program Specific Information
- SI Signal Specific Information
- the program content is a change point. In some cases, it is not clearly indicated as a change.
- the DIT is originally inserted even at a discontinuity point of a PCR (Program Clock Reference) included in a packet header.
- the PCR may not always be discontinuous at a change point of a program. For this reason, it is difficult to say that such DITs also indicate changes in all programs.
- the present invention has been made in view of the above-described problem, and the problem is that the representative image is inadvertently presented to the user, so that the contents of the moving image information and the like are inadvertently provided.
- An information recording device and method capable of recording each information on a recording medium in a state where it can be prevented from being recognized by a user, and playing while restricting reproduction of each recorded information.
- Information reproducing apparatus and method capable of performing the same, an information recording program for the information recording, an information reproducing program for the information reproducing, and the information recording program or the information reproducing program or the reproduction controlling program. It is to provide a recording medium on which information is recorded.
- the invention according to claim 1 provides recording information such as a transport stream input from the outside as recording information to be recorded on a recording medium such as a hard disk.
- a recording medium such as a hard disk.
- an information output device that converts the recording information into a recording stream for recording on a medium and outputs the recording information to an information recording device, partial recording information such as an event constituting the recording information is recorded.
- Detection means such as a microcomputer unit for detecting management information for each of the partial record information including at least time information indicating a change point at which the content of the report is changed from the input record information; and And generating instruction information such as an event change information table indicating a boundary of the recording stream, and inserting the generated instruction information into the recording stream to form the recording stream.
- Output means such as a microcomputer section for outputting.
- management information for each piece of recording information is detected from the input recording information, instruction information is generated based on the detected management information, and the generated instruction information is stored in the recording stream. Since the recording stream is inserted to form the recording stream and output to the information recording device, the instruction information is generated from the management information directly indicating the change of the partial recording information, so that it is ensured that the partial recording information has been changed. It is possible for the information recording device to recognize the indicated instruction information.
- the invention according to claim 2 is the information output device according to claim 1, wherein the output unit is configured to output the partial record information at a timing when the content of the partial record information is changed.
- the instruction information is inserted at a position of the recording stream corresponding to a timing earlier by a preset time.
- the recording information is compressed by an MPEG system and input from the outside,
- the time is equal to one G ⁇ ⁇ ⁇ ⁇ P (Group
- the recording information is compressed by the MPEG system and input from the outside, and the preset time is equal to the reproduction time of the recording information corresponding to one GOP in the MPEG system. Since it is a live time, it is possible to more reliably prevent the loss of information immediately after the change of the partial record information.
- an invention according to claim 4 is the information output device according to any one of claims 1 to 3, wherein the recorded information is input via broadcast.
- the management information is, for each of the partial record information, information indicating a broadcast start time of the partial record information and a broadcast time of the partial record information.
- the management information is information indicating the broadcast start time of the partial record information and the broadcast time of the partial record information for each partial record information, and the management information is changed for each record information.
- the change of the partial record information can be surely grasped.
- an invention according to claim 5 is directed to any one of claims 1 to 4, wherein the recording stream output from the information output device according to any one of claims 1 to 4 is recorded on the recording medium.
- extracting means such as a microcomputer unit for extracting the instruction information from the output recording stream, and recording the extracted instruction information on the recording medium together with the corresponding partial recording information.
- a recording unit such as a recording unit.
- the instruction output information is extracted from the recording stream from which the information output device output is also output, and the extracted instruction information is recorded on the recording medium together with the corresponding partial recording information. Since the instruction information is generated from the directly indicated management information, the information recording device can reliably recognize the instruction information indicating that the partial record information has been changed.
- the invention according to claim 6 is directed to recording information such as a transport stream input from outside as recording information to be recorded on a recording medium such as a hard disk.
- a recording medium such as a hard disk.
- time information indicating a change point at which the content of partial recording information such as an event constituting the recording information is changed is changed.
- the partial record information including at least A detection step of detecting the management information for each of the input recording information, and generating instruction information such as an event change information table indicating a boundary of the recording stream based on the detected management information; And an output step of inserting the generated instruction information into the recording stream to form the recording stream, and outputting the recording stream to the information recording device.
- management information for each piece of recording information is detected from the input recording information, instruction information is generated based on the detected management information, and the generated instruction information is stored in the recording stream. Since the recording stream is inserted to form the recording stream and output to the information recording device, the instruction information is generated from the management information directly indicating the change of the partial recording information, so that it is ensured that the partial recording information has been changed.
- the information recording device can recognize the indicated instruction information.
- an invention according to claim 7 is executed by an information recording apparatus that records the recording stream output by the information output method according to claim 6 on the recording medium.
- An information recording method wherein an extracting step of extracting the instruction information from the output recording stream, and a recording step of recording the extracted instruction information together with the corresponding partial recording information on the recording medium, It is characterized by having.
- the instruction information is extracted from the recording stream output by the information output method, and the extracted instruction information is recorded on the recording medium together with the corresponding partial recording information. Since the instruction information is generated from the directly indicated management information, the information recording device can reliably recognize the instruction information indicating that the partial record information has been changed.
- the invention according to claim 8 is directed to recording of a transport stream or the like input from outside as recording information to be recorded on a recording medium such as a hard disk.
- the output computer included in the information recording device that converts the recording information into a recording stream for recording on the recording medium is changed to a time indicating a change point at which the content of the partial recording information such as an event constituting the recording information is changed.
- Detecting means for detecting, from the input recording information, management information for each of the partial recording information including at least information, and an event information change table indicating a boundary of the recording stream based on the detected management information.
- management information for each piece of recording information is detected from input recording information, instruction information is generated based on the detected management information, and the generated instruction information is stored in the recording stream. Since the output computer functions to insert and form the recording stream and output it to the information recording device, the instruction information is generated from the management information directly indicating the change of the partial recording information. The information recording device can reliably recognize the instruction information indicating that the operation has been performed.
- an invention according to claim 9 includes an information recording device that records the recording stream output from the information output device according to claim 8 on the recording medium. Extracting means for extracting the instruction information from the output recording stream, and recording means for recording the extracted instruction information together with the corresponding partial recording information on the recording medium; It is characterized by functioning as
- the recording computer functions to extract the instruction information from the recording stream from which the information output device output is also output, and record the extracted instruction information together with the corresponding partial recording information on the recording medium. Since the management information and the instruction information directly indicating the change of the partial record information have been generated, the information recording apparatus can recognize the instruction information indicating the change of the partial record information without fail.
- an invention according to claim 10 is characterized in that the information output program according to claim 8 is recorded so as to be readable by the output computer.
- the management information for each partial record information is detected from the input record information, and based on the detected management information. Since the output computer functions to generate the instruction information, insert the generated instruction information into the recording stream to form the recording stream, and output the recording stream to the information recording device, the partial recording information is changed. Since the instruction information is generated from the management information directly indicating the partial recording information, the information recording device can surely recognize the instruction information indicating that the partial record information has been changed.
- an invention according to claim 11 is characterized in that the information recording program according to claim 9 is recorded so as to be readable by the recording computer.
- the instruction information is extracted from the recording stream output from the information output device including the output computer according to the seventh aspect of the present invention. Since the recording computer functions to record the extracted instruction information on the recording medium together with the corresponding partial recording information, the instruction information is generated from the management information directly indicating the change of the partial recording information. Therefore, it is possible to recognize in the information recording device the instruction information indicating that the partial recording information has been changed.
- the embodiment described below uses the MPEG method as a compression method.
- broadcast waves such as digital television broadcasts (hereinafter simply referred to as digital broadcasts)
- digital broadcasts receives broadcast programs transmitted via the broadcast waves and receives reception information corresponding to the received broadcast programs.
- a broadcast receiving and recording system configured by an information output device (R, so-called set-top bots) for outputting the received information, and an information recording device for acquiring the received information from the receiving device and recording the information on a recording medium.
- R information output device
- information recording device for acquiring the received information from the receiving device and recording the information on a recording medium.
- FIGS. 1 to 3 are block diagrams showing a schematic configuration of the broadcast receiving and recording system
- FIG. 4 is a diagram showing a recording format when recording a broadcast program included in a received broadcast wave.
- the broadcast receiving system S performs a necessary decoding process on the broadcast wave received via the antenna ⁇ , and executes a program included in the broadcast wave.
- a set-top box ST for generating a recording stream for recording containing the recording stream and outputting the recording stream to the information recording / reproducing apparatus SR, and receiving the recording stream via a network B such as a serial bus or an IP (Internet Protocol) network.
- a network B such as a serial bus or an IP (Internet Protocol) network.
- This is recorded by the information recording / reproducing apparatus SR for recording and reproducing the same on a recording medium such as a hard disk.
- the set-top box ST of the embodiment includes a digital broadcast receiving unit 1 to which an antenna ANT is connected, a demultiplexer unit 2, and a microcomputer (hereinafter, referred to as a microcomputer). ) Section 3, graphics section 5, video decoding section 6, OSD (On Screen Display) section 9, HSI (High Speed Interface) section 10 directly connected to the network, and portable remote control 1 2 and a remote control receiver 11 for receiving information transmitted from the remote controller 12 using infrared rays or the like.
- a microcomputer hereinafter, referred to as a microcomputer.
- the antenna ANT When performing digital information output processing or the like, first, the antenna ANT receives the broadcast radio wave, generates a reception signal Srv corresponding to the received broadcast radio wave, and outputs the signal to the digital broadcast receiver 1. .
- the remote controller 12 receives an infrared ray IR emitted from the remote controller 12 in response to the start operation. Then, based on the operation information Sop output from the remote control light receiving unit 11, the microcomputer unit 3 generates the control information Sen to receive the digital information specified in the start operation and output the digital information to the network B. Output to digital broadcast receiver 1.
- the digital broadcast receiving section 1 selects digital information corresponding to a desired channel from the received digital information under the control of the microcomputer section 3 by transmitting and receiving the control information Sen, Output to the demultiplexer unit 2 as digital information Sm.
- the digital broadcast receiving unit 1 detects the PID (Packet ID) of each packet constituting the digital information in the selected channel, and sends the content to the microcomputer unit 3 as control information Sen. Output.
- PID Packet ID
- the demultiplexer 2 extracts, from the digital information Sm, digital information to be output to the preselected information recording / reproducing apparatus SR, and extracts the digital information at a preset recording rate.
- HSI unit 10 and microcomputer unit 3 To output to the video decoding unit 6, HSI unit 10 and microcomputer unit 3 as recording information Spd.
- the video decoding unit 6 to which the recording information Spd has been input demodulates the digital information included in the recording information Spd, and outputs the demodulated information to the graphics unit 5 as demodulated information Sdc.
- the graphics unit 5 processes the image information included in the demodulation information Sdc for display, and outputs it as display information Sv, which is an analog signal, to an external display (not shown). The image corresponding to is displayed.
- sub-images such as subtitles or display data corresponding to the image included in the demodulation information Sdc are separately generated in the OSD unit 9 under the control of the microcomputer unit 3 by transmitting and receiving the control signal Sco. Output to the graphics section 5 as OS information Sosd.
- the graphics unit 5 superimposes the sub-image information included in the ⁇ S information Sosd on the demodulation information Sdc as necessary, and combines them together in the display information Sv. Image information to be generated.
- the HSI unit 10 to which the recording information Spd has been input is subjected to digital interface processing on the recording information Spd under the control of the microcomputer unit 3 by transmitting and receiving the control information Sec. And outputs the digital information as output information Sdp to the information recording / reproducing apparatus SR via the network B.
- the output information Sdp includes both image information and audio information as digital information.
- the microcomputer unit 3 receives the infrared IR emitted from the remote controller 12 in accordance with the content of the operation for controlling the recording process executed by the remote controller 12 in the remote controller light receiving unit 11 so as to receive the infrared ray. Based on the operation information Sop output from the remote control light receiving unit 11, the control information Sen, Sco, etc. are generated and output to the corresponding constituent members, and the recording processing described above is supervised.
- the information recording / reproducing apparatus SR of the embodiment includes an HSI section 20 directly connected to the network B, a reproduction control section 21, a recording section 22, and a microcomputer section 23. And a hard disk unit 24 including a hard disk HD in which digital information is recorded in the recording format shown in FIG. 4, a portable remote controller 26, and a remote controller receiving unit for receiving information transmitted from the remote controller 26 using infrared rays or the like. 25.
- the HSI unit 20 digitally performs interface processing on the transmitted recording information Spd under the control of the microcomputer unit 3 by transmitting and receiving the control information Sec.
- the recording unit 22 extracts digital information to be recorded on the hard disk HD selected in advance from the recording information Spd, and can continuously record the digital information on the hard disk HD.
- the information is output to the hard disk unit 24 including the hard disk HD as recording information Sr at the recording rate.
- the hard disk unit 24 stores the necessary digital information in the internal hard disk HD according to the recording format shown in FIG. Record Sr.
- the infrared IR emitted from the remote controller 26 in response to the start operation is transmitted to the remote control light receiving unit.
- the microcomputer unit 23 Based on the operation information Sop output from the remote control light-receiving unit 25 by receiving it at 25, the microcomputer unit 23 generates control information Ssh to detect the digital information specified in the start operation from the hard disk HD. Output to the hard disk unit 24.
- the hard disk unit 24 detects digital information specified by the control information Ssh from the hard disk HD, and outputs the digital information to the reproduction control unit 21 as detection information Sp.
- the playback control unit 21 performs a preset playback process on the digital information included in the detection information Sp, generates playback process information Spp, and sends the playback process information Spp to the HSI unit 20. It is output.
- the recording format shown in FIG. 4 is a logical recording format used when recording the digital information on the hard disk HD, and FIG. 4 shows that the digital information is recorded on the hard disk based on the recording format. It is a diagram showing the recording format hierarchically and schematically after each has been performed.
- the well-known physical format used for the hard disk HD is used as it is.
- the concept of "unit” is used as a unit when handling recorded digital information.
- one event in the digital broadcasting is defined as a unit.
- the concept of a directory is used for a portion where the PID storing the image information and the like in the transport stream described later in the broadcast wave is constituted by the same packet.
- the directory specifies the whole PID or a part of the same unit, and indicates a section having the same PID.
- unit information INF which is management information corresponding to each of the above units, and broadcast and recorded on the hard disk HD
- stream information SOB which is the actual state of the digital information
- the unit information INF includes spare information RSV (4 bytes) which is information relating to the recording of the unit and which is considered to be unnecessary for management, and the recorded information.
- the program start time information EST (5 bytes), which indicates the broadcast start time of the event on the broadcast wave
- the program broadcast time information EDUR (3) which indicates the broadcast time of the recorded event on the broadcast wave Bytes
- TS Transport stream
- Directory number information DN (2 bytes), which is information indicating the number of directories included in the unit assigned to each PID, and each directory Directory information DS1 to DSn (4 bytes each) indicating a position from the head of unit information of directory information DIF described later, which is attribute information and the like, and the directory information DIF1 to DIFn.
- the information according to the present invention is the program start time information EST and the program broadcast time information EDUR.
- Preliminary information RSV (1 byte)
- a packet pointer PPT (4 bytes) indicating the position where the first TS packet can be recognized when each directory is recorded by the number of bytes from the head of each directory, When the directory is recorded, the position where the application GOP can be recognized first is set from the top of the directory to the packet point.
- GOP packet pointer GPP (4 bytes) indicating the number of packets from the position moved by PPT
- pointer table number information PTN (4 bytes) indicating the number of applications G ⁇ P included in each directory
- It comprises pointer tables PT1 to PTm indicating attribute information and the like for each application GP included in the directory.
- the pointer table PT is identified by GOP size information GPSZ (4 bytes) indicating the number of buckets included in the application GOP, and video packet identification information VID of the directory to which the application GOP belongs.
- the display time information PBTM (2 bytes) indicating the total display time of the image information to be displayed and the number of packets from the first packet of the application GOP to the end of the packet including the first reference image in the application GOP
- One reference image size FESZ (2 bytes).
- one stream information S ⁇ B is the information on the hard disk HD.
- One or more aligned units ALUs will be included as one category, and one aligned unit ALU will be composed of one or more sectors (a general hard disk HD has an information amount of 512 bytes in the case of HD). ing. Then, one sector SR cannot belong to two adjacent aligned units ALU, and one aligned unit ALU cannot belong to two adjacent stream information. Further, normally, one stream information SOB is recorded so as to correspond to the above-mentioned event.
- the broadcast receiving and recording system S of the embodiment as described later in converting digital information included in the received broadcast wave of digital broadcast into a recording stream for transmission to the information recording / reproducing apparatus SR, In the process of generating the recording stream mainly in the set-top box ST, the information indicating the change (change point) of the event in the received digital broadcast is surely reflected in the recording stream for the information recording / reproducing apparatus SR.
- the change point (more specifically, the change time) of the event in the transport stream in the received broadcast wave is detected, and the detected change time is reflected in the generated recording stream.
- FIG. 6 is a flowchart showing the whole process.
- step S1 first, whether the operation of outputting the received digital broadcast to the information recording / reproducing apparatus SR and recording it is executed in the remote control 12 or not. Is checked (step S1), if not executed (step SI; NO), the operation waits as it is (step SI; YES), if executed (step SI; YES), it is included in the received digital broadcast. Using the time information (more specifically, the time information engraved on the reference clock in the broadcasting station that broadcasts the digital broadcast) contained in the microcomputer section 3 in the set-top box ST.
- step S10 for correcting the system clock
- step S20 the event recognition process for recognizing the start time of each event included in the received digital broadcast
- step S40 Event change detection processing
- step S60 a stream transmission process of transmitting the recording stream reflecting the changed points to the information recording / reproducing device SR, in parallel with each other and independently.
- step S10 the time setting process as step S10 will be described with reference to FIG.
- FIG. 7 is a flowchart showing the time setting process.
- Step S10 in the time setting process (step S10) of the embodiment, first, it is always monitored whether or not the remote controller 12 is operated to stop the receiving / recording process of the embodiment.
- Step S11 When the operation is performed (Step Sll; YE S), the processing shifts to the processing of Step S70 shown in FIG. 6, while when the operation is not performed (Step Sll; NO Then, one packet in the transport stream as a digital broadcast is received (step S12), and the packet is engraved in the reference clock in the broadcasting station that broadcasts the digital broadcast. It is confirmed whether the time information is included in the form of, for example, a time offset table (step S13).
- step S13 If the time information is not included (step S13; NO), the process returns to step S11 and repeats the subsequent processes.
- the packet receiving the time information step S12
- step S13; YES If it is included in the set (step S13; YES), the time information is decoded in the microcomputer section 3 (step S14), and then the reference time of the operation of the set-top box ST in the microcomputer section 3 is indicated.
- the system clock is adjusted to match the decoded time information (step S15), and the process returns to step S11 again to repeat the processing up to now.
- FIG. 8 is a flowchart showing the event recognition process.
- the event recognition process step S20 of the embodiment, first, in a register or the like (not shown) in the microcomputer unit 3, whether the recognition of a new event as the microcomputer unit 3 is completed.
- Initialize the event recognition flag which is a parameter indicating inability (Step S21), and notify the information recording / reproducing device SR by including the change point where the event is changed in the recording stream for the information recording / reproducing device SR.
- Initialize the event change notification flag which is a parameter that indicates whether the preparation for
- step S23 After the initialization of each flag is completed, it is constantly monitored whether or not an operation to stop the reception / recording process of the embodiment is performed on the remote controller 12 (step S23). If the operation has been performed (step S23; YES), the process proceeds to step S70 shown in FIG. 6, while if the operation has not been performed (step S23; NO), the transport as a digital broadcast is performed. One packet in the stream is received (step S24), and it is determined whether or not an event information table having a specific PID can be received within the packet. (Step S25).
- the event information table includes attribute information indicating the attribute of each event in the digital broadcast being broadcast, broadcast start time information indicating the broadcast start time of the event, and broadcasting of the event.
- the broadcast time information indicating the required time is included with a specific PID so that it can be distinguished from each other, and the broadcast start time of each event is recorded in the set-top box ST. And the broadcast time can be acquired for each event. Therefore, in the present application, it is determined whether the currently received event has been changed to another event by using the broadcast start time information and the broadcast time information acquired from the event information table.
- step S25 when the specific event information table has not been received (step S25; NO), the process returns to step S23 again to repeat the processing up to now, and on the other hand, the reception was successful. (Step S25; YES), then, it is determined whether or not the event information section having the specific table ID defined in advance in the received specific event information table has been received. (Step S26).
- the event information section refers to the event information section in the event information table.
- Sex information, broadcast start time information, and broadcast time information are included with a specific table ID so that they can be distinguished from each other for each event. Time can be acquired for each event.
- step S26 If the specific event information section is not received in the determination of step S26 (step S26; NO), the process returns to step S23 again and repeats the previous processing. (Step S26; YES), then, when the event information section is received, the value of the event recognition flag is "0", that is, the event itself in the digital broadcast is still recognized. Check whether it is or not (step S27).
- step S27 if the value of the event recognition flag is "0", that is, if the event currently being broadcast has not yet been recognized (step S27; YES), then the acquired event information It is confirmed in the received transport stream whether or not the next event indicator indicating whether or not the event is currently being broadcast is "1" (step S28).
- next event indicator is not "1", that is, if it is not the information of the currently received event (step S28; NO)
- the change of the currently received event step S28; Since information such as the end time cannot be obtained, the process returns to the process in step S23 again and repeats the processes up to this point.
- the next event indicator power is 1 ”, that is, it is currently being received. If it is event information (step S28; YES), the change point (information such as the program start time and end time) of the currently received event can be obtained, and the broadcast corresponding to the currently received event can be obtained.
- the value of the start time information is obtained from the above event information section, and a unit information temporary file for transmission to the information recording / reproducing device SR (not shown in the microcomputer section 3, which is formed in the memory area) Similarly, the value of the broadcast time information corresponding to the current event is obtained from the event information section and described in the unit information temporary file (step S30).
- the event recognition flag is changed to "1" assuming that the currently received event has been recognized by the process (step S31), and the process returns to the step S23 again to repeat the processes up to now.
- step S27 if the value of the event recognition flag is "1", that is, if one event is currently recognized by the processing of steps S28 to S31 up to the present (step S27 NO), and confirms whether the next event indicator is "1" in the received transport stream (step S32).
- next event indicator is not "0", that is, if it is not the next information of the currently received event (step S32; NO), the next event indicator of the currently received event is returned. Since the start point of the event (information such as the program start time) cannot be obtained, the process returns to step S233 and repeats the previous process. If it is the information of the event next to the currently received event (step S32; YES), the start point of the next event following the currently received event (information such as the program start time) should be obtained. Therefore, the value of the broadcast start time information corresponding to the event following the currently received event is obtained from the above event information section, and the next event disclosure time for transmission to the information recording / reproducing apparatus SR is obtained.
- step S33 In the information file (not shown in the microcomputer section 3 and formed in the memory area) (step S33), similarly, the value of the broadcast time information corresponding to the next event is stored in the event information section.
- the next event time information file for transmission to the information recording / reproducing device SR (not shown in the microcomputer unit 3 and formed in the memory area) is obtained (step S34), and these processes are performed.
- Event information following the currently received event can be acquired by the
- the notification flag is changed to "1" (step S35), and the process returns to step S23 again to repeat the previous process.
- FIG. 9 is a flowchart showing the event recognition process.
- step S 40 in the event change detection process (step S 40) of the embodiment, first, in the register or the like in the microcomputer unit 3, the number of events transmitted as a recording stream from the set-top box ST Initialize the event reference count flag, which is a parameter indicating (step S41).
- the remote controller 12 After initialization of the event reference flag, the remote controller 12 receives the information of the embodiment. It is constantly monitored to see if an operation to cancel the recording process has been performed (step s).
- step S42 when the operation is performed (step S42; YES), the process proceeds to a process of step S70 shown in FIG. 6, while when the operation is not performed (step S42; NO), One packet in the transport stream as a digital broadcast is received (step S43), and whether or not the current value of the event change notification flag is “1”, that is, the change in which the event is changed Is included in the recording stream for the information recording / reproducing apparatus SR, and it is confirmed whether or not the preparation for notifying the information recording / reproducing apparatus SR is completed (step S44). If it is not "l" (step S44; NO), it means that the change point cannot be notified yet, so the process returns to step S42 and repeats the previous process.
- step S44 If the value is "1 If (YES in step S44), the time of the system clock specified in the processing in step S10 described above is obtained (step S45), and the obtained time is obtained in step S33 in FIG. It is confirmed whether or not a time 0.5 seconds before the time described in the next event disclosure time information file is indicated (step S46).
- the time “0.5 seconds” is a time corresponding to the reproduction time of the image and audio included in one GOP in the MPEG system used for digital broadcasting.
- step S46 NO
- the event change point change time
- the process returns to step S23 again and repeats the previous process.
- the obtained time is 0.5 seconds before the time described in the next event disclosure time information file. If the time is indicated (step S46; YES), the event change information table is determined to be a timing to be inserted, and the event change information table should be immediately inserted into the recording stream transmitted to the information recording / reproducing apparatus SR.
- the bucket in the recording stream to be transmitted to the information recording / reproducing apparatus SR at the current time is inserted into the event change information table by replacement (step S47).
- the event change information table is an information table described so that the information recording / reproducing apparatus SR can recognize that an event has been changed.
- step S48 The unit information INF reflecting the contents of the event change notification flag, the event recognition flag, and the event change information table is transmitted to the information recording / reproducing apparatus SR as a part of the recording stream.
- step S49 Initialize a file transmission flag to be described later indicating that the information has been transmitted to the information recording / reproducing apparatus SR (step S49), increment the event reference number flag by 1 (step S50), and have described the next event above.
- step S50 increment the event reference number flag by 1
- FIG. 10 is a flowchart showing the stream transmission processing.
- step S61 the file transmission flag is initialized in the register or the like in the microcomputer unit 3 (step S61). It is always monitored whether or not an operation for canceling the reception / recording process of the embodiment is performed on the remote controller 12 (step S62), and when the operation is performed (step S62; YES), as shown in FIG. If the operation is not performed (step S62; NO), the process proceeds to step S70, and if the current event recognition flag value is “1”, that is, if the currently received event is It is confirmed whether or not it has been recognized (step S63). If it has not been recognized yet (step S63; NO), the process returns to step S62 and repeats the previous processes.
- step S63 if the value of the event recognition flag is "1" and the event that is currently being received has been recognized (step S63; YES), then the event transmission is performed. It is checked whether or not the value of the flag is “1”, that is, whether or not the event change information table indicating the change of the event has been transmitted (step S64). If it has been transmitted (step S64; YES), the process returns to step S62 to repeat the processing described above for the next event, while if it has not been transmitted (step S64; N ⁇ ), Then, the current value of the event reference number flag is described in the above-mentioned unit information temporary file (see steps S29 and S30 in FIG.
- step S65 step S65
- step S66 the value of the file transmission flag is updated to “1”, and the process returns to step S62 to return to the next event. Then, the above-described processing is repeated.
- FIG. Fig. 11 is a schematic diagram comparing the packet PT in the transport stream being broadcast as a digital broadcast (upper part in Fig. 11) and the packet ⁇ in the recording stream corresponding to the output information Spd on the time axis. It is.
- the above-described event is placed at a time position in the recording stream corresponding to 0.5 seconds before the change time of the event in the transport stream.
- the event change information table DIT indicating the change time will be inserted. It is desirable that two consecutive packets corresponding to the event change information table DIT be inserted into the recording stream in order to improve the detection accuracy of the event change information table DIT in the information recording / reproducing apparatus SR. Also, the change in the stream information SOB as the recording stream corresponding to the event change coincides with the timing of the packet carrying the display image corresponding to the event change time as shown in FIG. Will be.
- FIG. 12 is a flowchart showing the recording process.
- the packet PT recorded on the hard disk HD The reference number flag indicating the number of data is initialized (step S80).
- the stream information SO B (see FIGS. 4 and 5) including the aligned unit ALU (see FIG. 5) to be recorded is recorded on the hard disk HD.
- the recording start position is obtained based on the hard disk HD and temporarily stored in the memory (not shown in the microcomputer 23) (step S8). 1) Further, it is always monitored whether or not an operation to stop the recording process of the embodiment is performed on the remote controller 26 (step S82).
- step S82 When the operation is performed (step S82; YES), the recording process is performed. If the operation is not performed (step S82; NO), one packet PT transmitted as a recording stream is received (step S83), and the received packet PT The information is recorded at the recording position of the hard disk HD (step S84), and the reference number flag is incremented by "1" (step S85).
- step S86 when two event change information tables DIT are detected consecutively (step S86; YES), the recording end position of the stream information S ⁇ B on the hard disk HD is determined based on the hard disk HD.
- the acquired packet is temporarily stored in the memory in the microcomputer unit 23 (step S87), and the process proceeds to the step S80 to receive the next packet PT from the set-top box ST.
- step S86 determines whether two consecutive event change information tables DIT are not detected in the determination in step S86 (step S86; NO). If the number of packets received in one aligned unit ALU has become a preset number (step S88). If the number of packets has not been reached (step S88; NO), the processing shifts to the above-mentioned step S82 to receive the next packet PT from the set-top box ST. If the number has reached (step S88; YES), it is determined that the formation of one aligned unit ALU is completed, and the above-described processing is repeated for the next aligned unit ALU. The process proceeds to flop S80.
- FIG. 13 is a diagram schematically showing, on a time axis, the relationship between the aligned unit ALU and the packet PT on the hard disk HD after digital information has been recorded by the information recording / reproducing device SR.
- each packet PT is recorded such that the boundary of one aligned unit ALU coincides with the boundary of stream information SOB. .
- the event information table included in the transport stream of the digital broadcast is detected, and the event information table is detected.
- An event change information table DIT indicating the change time of the event is generated, and the generated event change information table DIT is inserted into the recording stream and output to the information recording / reproducing apparatus SR. Since the event change information table DIT is generated from the table, the event change information table DIT, which indicates that the event has been changed, can be recognized in the information recording / reproducing apparatus SR.
- the event change information table DIT is inserted at the position of the recording stream corresponding to the timing 0.5 seconds before the timing at which the content of the event is changed, immediately after the event change (that is, It is possible to prevent dropped frames at the beginning of a later event). Further, since the event change information table DIT is recorded in correspondence with the unit information INF indicating the broadcast start time and the broadcast time of the event, the change points of the event that are changed for each broadcast are surely grasped. be able to.
- the present invention can be applied to the case where a recording stream is recorded on a large-capacity optical disk such as a Versatile Disc), a tape medium, or a semiconductor recording medium.
- the event change information table DIT may be inserted immediately before (see Fig. 11).
- a program corresponding to the flowcharts shown in FIGS. 6 to 10 and 12 described above is recorded on an information recording medium such as a flexible disk or a hard disk, or via a network such as the Internet.
- an information recording medium such as a flexible disk or a hard disk
- the CPU can also function as the microcomputer unit 3 or 23 according to the embodiment.
- FIG. 1 is a block diagram showing a schematic configuration of a broadcast receiving and recording system of an embodiment.
- FIG. 2 is a block diagram showing a detailed configuration of a set-top box of the embodiment.
- FIG. 3 is a block diagram showing a detailed configuration of the information recording / reproducing device of the embodiment.
- FIG. 5 is a schematic diagram showing a relationship between a recording format and a physical format according to the embodiment.
- FIG. 6 is a flowchart illustrating an entire recording stream generation process according to the embodiment.
- FIG. 8 is a flowchart showing an event recognition process of the embodiment.
- FIG. 9 is a flowchart showing an event change detection process of the embodiment.
- FIG. 10 is a flowchart showing a stream transmission process according to the embodiment.
- FIG. 11 is a schematic diagram showing an aspect of a recording stream according to the embodiment.
- FIG. 12 is a flowchart showing a recording process according to the embodiment.
- FIG. 13 is a schematic view showing an aspect of a hard disk after recording according to the embodiment. Explanation of reference numerals
- Video decoding unit 6 6 .
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Television Signal Processing For Recording (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
- Management Or Editing Of Information On Record Carriers (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
Description
Claims
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JP2005506201A JPWO2004102962A1 (ja) | 2003-05-14 | 2004-05-14 | 情報出力装置及び情報出力方法、情報記録装置及び情報記録方法、情報出力用プログラム及び情報記録用プログラム並びに情報記録媒体 |
US10/555,692 US20060271994A1 (en) | 2003-05-14 | 2004-05-14 | Information output device and information output method, information recording device and information recording method, information output program and information recording program, and information recording medium |
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JP (1) | JPWO2004102962A1 (ja) |
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JP2007221269A (ja) * | 2006-02-14 | 2007-08-30 | Canon Inc | 表示信号制御装置、表示信号制御方法、プログラム及び記憶媒体 |
US20100275228A1 (en) * | 2009-04-28 | 2010-10-28 | Motorola, Inc. | Method and apparatus for delivering media content |
WO2011028916A1 (en) * | 2009-09-02 | 2011-03-10 | General Instrument Corporation | Network attached dvr storage |
Citations (3)
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JPH11239186A (ja) * | 1997-11-14 | 1999-08-31 | Sony Internatl Europ Gmbh | トランスポートストリーム配信方法及びインターフェイス装置 |
JP2002353920A (ja) * | 2001-05-29 | 2002-12-06 | Sony Corp | データ処理装置 |
JP2003092738A (ja) * | 2001-07-11 | 2003-03-28 | Matsushita Electric Ind Co Ltd | Mpegエンコード装置及びmpegデコード装置並びにエンコードプログラム |
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JP3981777B2 (ja) * | 1997-08-19 | 2007-09-26 | ソニー株式会社 | 情報提供装置および方法、情報受信装置および方法、並びに情報提供システム |
JP2000251391A (ja) * | 1999-03-02 | 2000-09-14 | Sony Corp | データ伝送方法及び電子機器 |
US6802074B1 (en) * | 1999-05-31 | 2004-10-05 | Matsushita Electric Industrial Co., Ltd. | Recording apparatus, transmitting apparatus, and computer-readable recording medium |
US20060064716A1 (en) * | 2000-07-24 | 2006-03-23 | Vivcom, Inc. | Techniques for navigating multiple video streams |
-
2004
- 2004-05-14 CN CN200480012676.7A patent/CN1784897A/zh active Pending
- 2004-05-14 JP JP2005506201A patent/JPWO2004102962A1/ja active Pending
- 2004-05-14 WO PCT/JP2004/006554 patent/WO2004102962A1/ja active Application Filing
- 2004-05-14 US US10/555,692 patent/US20060271994A1/en not_active Abandoned
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Publication number | Priority date | Publication date | Assignee | Title |
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JPH11239186A (ja) * | 1997-11-14 | 1999-08-31 | Sony Internatl Europ Gmbh | トランスポートストリーム配信方法及びインターフェイス装置 |
JP2002353920A (ja) * | 2001-05-29 | 2002-12-06 | Sony Corp | データ処理装置 |
JP2003092738A (ja) * | 2001-07-11 | 2003-03-28 | Matsushita Electric Ind Co Ltd | Mpegエンコード装置及びmpegデコード装置並びにエンコードプログラム |
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