WO2010113824A1 - 記録装置 - Google Patents
記録装置 Download PDFInfo
- Publication number
- WO2010113824A1 WO2010113824A1 PCT/JP2010/055471 JP2010055471W WO2010113824A1 WO 2010113824 A1 WO2010113824 A1 WO 2010113824A1 JP 2010055471 W JP2010055471 W JP 2010055471W WO 2010113824 A1 WO2010113824 A1 WO 2010113824A1
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- WIPO (PCT)
- Prior art keywords
- recording
- program
- optical disc
- area
- optical disk
- Prior art date
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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
- G11B27/102—Programmed access in sequence to addressed parts of tracks of operating record carriers
- G11B27/105—Programmed access in sequence to addressed parts of tracks of operating record carriers of operating discs
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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
- H04N5/765—Interface circuits between an apparatus for recording and another apparatus
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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
- H04N5/84—Television signal recording using optical recording
- H04N5/85—Television signal recording using optical recording on discs or drums
Definitions
- the present invention relates to a recording apparatus that records content data such as program data representing the contents of a broadcast program on a recording medium such as a Blu-ray disc.
- the recording apparatus records program data representing the contents of program video or audio on a built-in recording medium such as a hard disk, and records program data on a portable recording medium such as a removable optical disk.
- a built-in recording medium such as a hard disk
- a portable recording medium such as a removable optical disk.
- the program can only be played back by the recording device that performed the recording, and the recording capacity is limited when program data is stored without being erased. Since there is a shortage, it is difficult to save program data. Therefore, in order to reproduce the program with another reproducing apparatus or to store the program data, the program data is dubbed from a built-in recording medium to a portable recording medium.
- Patent Document 1 describes a recording apparatus that performs dubbing on a portable recording medium while performing recording for a certain period using a hard disk. This recording apparatus associates a program to be dubbed with an ID for identifying a portable recording medium, and when a recording medium is loaded, a program associated with the ID of the recording medium among the recorded programs Dubbing program data. With this technique, once an operation for registering a program to be dubbed is performed, dubbing can be easily performed only by mounting a portable recording medium on the recording apparatus.
- Japanese Patent Application Laid-Open No. 2004-228561 describes a technique for recording recording reservation information on a portable recording medium and recording based on the information recorded on the recording medium. With this technique, recording is performed on a recording medium based on reservation information recorded on a portable recording medium.
- the present invention has been made in view of such circumstances, and an object of the present invention is to provide a program being broadcast by providing a storage unit that temporarily stores content data to be recorded on a recording medium such as an optical disk.
- the present invention also provides a recording apparatus that can reliably record content data and record the content data on an appropriate recording medium even when content data that is program data representing the content data is recorded.
- the recording apparatus is a recording apparatus that records content data on a removable recording medium, and includes a storage unit having a plurality of storage areas capable of storing content data, and medium information unique to the recording medium. Means for storing in association with one storage area of the plurality of storage areas; means for setting one storage area of the plurality of storage areas as an unrelated storage area incapable of associating medium information; and content And a means for receiving a data recording instruction, and a means for storing the content data in the unrelated storage area when the means receives the recording instruction.
- a recording apparatus for recording content data such as program data on a removable recording medium includes a storage unit having a plurality of storage areas, and is a medium unique to the recording medium in association with a specific storage area. Store information.
- the recording apparatus registers a specific recording medium in association with a specific storage area, and sets one storage area as an unrelated storage area where medium information cannot be associated.
- the recording device accepts an instruction to record immediate content data, the recording device stores the content data in an unrelated area, thereby recording the content data representing the content of the program being broadcast without reservation, etc. Enable data recording.
- the recording apparatus stores, in a storage area associated with medium information, content data stored in the non-related storage area, and medium information stored in association with the storage area. And means for recording content data not recorded on the recording medium among the content data stored in the storage area when the medium is loaded.
- the recording device stores the content data stored in the unrelated storage area in the storage area associated with the recording medium, and when the recording medium associated with the storage area is loaded.
- the content data is recorded on the recording medium.
- the recording apparatus comprises means for recording content data stored in the non-related storage area on the recording medium when a recording medium that does not store medium information in association with the storage area is loaded. It is further provided with the feature.
- the recording device records content data stored in an unrelated storage area on a recording medium that does not store medium information, thereby arbitrarily creating a recording medium on which content data is recorded. Is possible.
- the content data is data representing the contents of the broadcast program, and is associated with a recording medium storing the medium information, and program designation information for designating a program in which the content data is to be recorded.
- the content data of the program in the storage area associated with the medium information of the recording medium when the recording medium is not loaded and the means for recording the content data of the program on the recording medium. Is further stored.
- the recording apparatus stores program designation information for designating a program in which content data representing the contents of the program is to be recorded in association with the recording medium, and records associated with the program designation information at the time of broadcasting the program. If a medium is loaded, the content data is recorded on the recording medium. In addition, when a recording medium associated with program designation information is not loaded, the recording apparatus stores content data in a storage area corresponding to the recording medium. Thus, in the recording apparatus, if the recording medium is registered and the program designation information is stored, the content data is stored in the storage unit even if the recording medium is not installed at the start of the broadcast of the program. To be recorded.
- the storage unit By storing the content data in the unrelated storage area, it is possible to reliably record the content data.
- the recording apparatus is instructed to record the content data, first, the content data is stored in an unrelated storage area of the storage unit, so that the content data is prevented from being recorded on an inappropriate recording medium.
- the recording apparatus records the content data on the recording medium later, thereby enabling the recording of the content data on an appropriate recording medium.
- FIG. 1 is a conceptual diagram showing the appearance of a recording apparatus 1 that is a recording apparatus of the present invention.
- a video display device 4 that is a television receiver is connected to the recording device 1.
- the recording device 1 outputs a video signal and an audio signal to the video display device 4, and the video display device 4 displays a video based on the video signal and outputs a sound based on the audio signal.
- the recording apparatus 1 receives various instructions such as a recording reservation instruction by receiving a signal from a remote controller (remote controller) 5 operated by a user.
- a remote controller remote controller
- FIG. 2 is a block diagram showing an internal configuration of the recording apparatus 1 which is the recording apparatus of the present invention.
- the recording apparatus 1 is connected to an external antenna (not shown) and the like, and receives a broadcast input unit 31 to which a broadcast signal obtained by demodulating a broadcast wave of digital broadcasting is input. And a signal input unit 32 for inputting a signal.
- the recording apparatus 1 includes a remote control receiving unit 33 that receives a signal from the remote controller 5, a signal output unit 34 that outputs a video signal to the video display device 4, and a hybrid that records program data representing the contents of the broadcast program.
- a drive unit 10 and a back-end unit 20 that performs processing for generating a video signal and program data from a broadcast signal or program data are provided.
- Program data is digital data representing the contents of a program consisting of video and audio, and the video and audio of the program can be reproduced by decoding the program data.
- Program data is content data in the present invention, and a broadcasted program is content in the
- the back end unit 20 includes a digital tuner 21 and an encoder 22.
- a broadcast input unit 31 is connected to the digital tuner 21, and a signal input unit 32 is connected to the encoder 22.
- the digital tuner 21 receives a broadcast signal of a digital broadcast from the broadcast input unit 31, and converts a selected channel, that is, a broadcast signal of a specific frequency band, into a digital format such as MPEG (Moving Picture Experts Group) -2TS (Transport Stream). Convert to stream data.
- the encoder 22 receives a video signal and an audio signal from the signal input unit 32 and performs a process of encoding the video signal and the audio signal into digital stream data such as MPEG-2PS (Program Stream) or MPEG-2TS.
- the back end unit 20 includes a stream processing unit 23, and the digital tuner 21 and the encoder 22 are connected to the stream processing unit 23.
- the stream processing unit 23 receives stream data from the digital tuner 21 and the encoder 22 and performs data processing on the stream data, such as processing for releasing scramble for digital broadcasting.
- the stream processing unit 23 is connected to the system bus in the back end unit 20.
- the system bus also includes a recording / playback control unit 24 including a calculation unit for performing calculations, a control memory 25 that is a volatile memory, a storage memory 27 that is a nonvolatile memory, and a decoder 28 that decodes stream data. Is connected.
- An image processing unit 29 is connected to the decoder 28.
- the recording / playback control unit 24 performs processing for controlling input / output of data between the units connected to the system bus.
- a remote control receiving unit 33 outside the back end unit 20 is connected to the recording / playback control unit 24.
- the recording / playback control unit 24 receives various instructions from the user by receiving a signal from the remote control receiving unit 33.
- the recording device 1 may further include a digital interface such as Ethernet (registered trademark) that receives stream data from an external device such as a tuner device. This digital interface is connected to the stream processing unit 23.
- the control memory 25 stores temporary information associated with calculations executed by the stream processing unit 23, the recording / playback control unit 24, or the like.
- the storage memory 27 stores information that needs to be stored, such as a control program necessary for the operation of the recording / playback control unit 24 and information necessary for recording reservation.
- the decoder 28 decodes the stream data into a video signal and an audio signal, and inputs the video signal and the audio signal to the image processing unit 29.
- the image processing unit 29 performs image processing such as pixel interpolation or color adjustment on the video signal.
- a signal output unit 34 outside the back end unit 20 is connected to the image processing unit 29.
- the signal output unit 34 outputs the video signal and the audio signal to the video display device 4.
- an interface unit 26 such as SATA (Serial Advanced Technology Attachment) is connected to the system bus in the back end unit 20, and the hybrid drive unit 10 outside the back end unit 20 is connected to the interface unit 26. ing.
- the back end unit 20 exchanges data with the hybrid drive unit 10 via the interface unit 26.
- the hybrid drive unit 10 includes an interface unit 14 such as SATA connected to the back-end unit 20, an optical disk drive 11, a storage unit 12 that stores data, and a drive control unit that controls operations of the optical disk drive 11 and the storage unit 12. 13.
- the hybrid drive unit 10 exchanges data with the back end unit 20 via the interface unit 14.
- the optical disk drive 11 is loaded with an optical disk such as a Blu-ray disk (registered trademark) or a DVD (Digital Versatile Disk), and reads data from the loaded optical disk and records data on the optical disk.
- the optical disc is detachable from the optical disc drive 11 and corresponds to a recording medium in the present invention.
- the storage unit 12 is configured by a nonvolatile memory such as a flash memory or a hard disk.
- FIG. 3 is a schematic diagram showing the internal configuration of the storage unit 12.
- the storage unit 12 includes a management area for storing information for managing the storage contents of the storage unit 12, and a plurality of first areas, second areas,..., An nth area and a spare area 120 for storing program data.
- the storage area is configured.
- n is a positive integer.
- n is set to an appropriate value in advance, and when the recording apparatus 1 is shipped, the storage area of the storage unit 12 is divided in advance into a plurality of storage areas including a management area, first to nth areas, and a spare area 120. Yes.
- the first to n-th areas are storage areas for associating specific optical disks individually and storing data corresponding to the associated optical disks.
- a specific optical disk 61 is associated with the first area
- a specific optical disk 62 is associated with the second area.
- no optical disc is associated with any area.
- the spare area 120 is an unrelated storage area according to the present invention for storing other data, and is set so that the optical disk cannot be associated.
- the management area of the storage unit 12 includes a management area management unit that stores information for managing the management area, a first area, a second area,..., An nth area, and a spare area 120.
- the first area management section, the second area management section,..., The nth area management section, and the spare area management section that store information for managing each of them are configured.
- the management area management unit the number of entries indicating the number of divided storage areas of the storage unit 12 and the addresses of the areas assigned to the first to nth area management units and the spare area management unit in the management area are displayed. Allocation area information to be shown is stored.
- the first area management unit includes an entry number indicating the number of the first storage area, an allocation flag indicating whether or not the optical disk is actually associated with the first area, and for identifying the associated optical disk
- the media ID is stored. Further, the first area management unit includes allocation area information indicating an address of an area allocated to the first area in the storage area of the storage unit 12, media key information that is information used for copy guard of the optical disc, and Map information indicating the distribution state of data related to the first region is stored.
- the media ID and the media key information are information recorded in advance on the optical disc, and are information specific to each optical disc. That is, the media ID and media key information correspond to the media information in the present invention.
- the allocation flag indicates that the optical disc is not associated.
- Media key information is not yet stored.
- the map information indicates to which address of the first area and the optical disc 61 the data stored in the first area and the data recorded on the optical disc 61 associated with the first area are distributed. Similar information is stored in each of the second to n-th area management units.
- the spare area management unit includes an entry number indicating the number of the spare area 120, allocation area information indicating the address of the area allocated to the spare area 120 in the storage area of the storage unit 12, and data stored in the spare area 120 Map information indicating the distribution state of is stored. For example, (n + 1) is stored as the entry number.
- the spare area management unit does not store the allocation flag, media ID, and media key information. Since these pieces of information necessary for associating the optical disk with the spare area 120 are not stored in the spare area management unit, the spare area 120 is an unrelated storage area in which the association of the medium information of the optical disk is prohibited.
- FIG. 4 is a flowchart illustrating a procedure of processing for dividing the storage area of the storage unit 12.
- the recording / playback control unit 24 causes the video display device 4 to display an acceptance screen for accepting designation of the number of optical disks that can be registered in the recording device 1, and a signal from the remote controller 5 on which the user has performed a predetermined operation is displayed on the remote controller.
- the reception unit 33 receives the designation of the number of optical disks that can be registered (S11).
- the recording / playback control unit 24 sets the number of entries by causing the management area management unit of the storage unit 12 to store the value of the designated number as the number of entries n (S12). Next, the recording / playback control unit 24 secures the first to nth region management units and the spare region management unit in the management region of the storage unit 12, and assigns allocation area information indicating the address of each allocated area. By storing in the management area management section, the first area management section, the second area management section,..., The nth area management section and the spare area management section are set (S13).
- the recording / playback control unit 24 divides the storage area other than the management area of the storage unit 12 into (n + 1) and assigns the addresses of the areas assigned to the first to nth areas and the spare area 120, respectively.
- the recording device 1 ends the process of dividing the storage area of the storage unit 12 as described above.
- FIG. 5 is a flowchart showing a procedure of processing performed by the recording apparatus 1 after the optical disc is loaded in the optical disc drive 11.
- the drive control unit 13 causes the optical disc drive 11 to read information recorded at a predetermined position in the optical disc, thereby obtaining the media ID of the optical disc.
- the recording / playback control unit 24 determines whether the read media ID is stored in any of the first to n-th area management units of the storage unit 12, so that the mounted optical disc is an already registered optical disc. It is determined whether or not there is (S201).
- the recording / playback control unit 24 uses the optical disc drive 11 to read the optical disc from the optical disc. It is determined whether or not the optical disk is formatted (S202). In step S202, the determination is performed based on, for example, a volume descriptor. If the optical disk is a formatted optical disk (S202: YES), the recording / playback control unit 24 determines whether the optical disk is a read-only optical disk based on the data read from the optical disk by the optical disk drive 11. (S203).
- the recording / playback control unit 24 determines whether an optical disk format instruction has been received (S204). For example, the recording / playback control unit 24 transmits a reception screen video signal for receiving an optical disc format instruction from the signal output unit 34 to the video display device 4 via the decoder 28 and the image processing unit 29.
- the video display device 4 displays a reception screen for receiving a format instruction.
- the user who confirms the reception screen inputs a format instruction by operating the remote controller 5 when formatting.
- the remote control receiving unit 33 receives a predetermined signal transmitted from the remote controller 5 that has received a predetermined operation from the user and receives an optical disk format instruction (S204: YES), or the optical disk is formatted in step S202.
- the recording / playback control unit 24 causes the drive control unit 13 and the optical disc drive 11 to format the optical disc (S205). If an optical disk format instruction is not received (S204: NO), the recording / playback control unit 24 determines whether an optical disk registration instruction is received (S206). For example, the recording / playback control unit 24 causes the video display device 4 to display an acceptance screen for accepting a registration instruction, and the remote control reception unit 33 accepts an instruction as to whether or not to register an optical disc. In addition, you may perform the process which displays the reception screen which united the reception screen for receiving a format instruction
- step S205 When step S205 is completed, or when an instruction to register an optical disc is received in step S206 (S206: YES), the recording / playback control unit 24 stores the storage unit based on the information stored in the management area of the storage unit 12. It is determined whether or not there is a storage area that is not associated with the optical disk among the 12 first to n-th areas (S207). If there is no storage area that is not associated with an optical disk (S207: NO), the recording / playback control unit 24 cancels registration of any one of the optical disks registered in association with each storage area. It is determined whether or not an instruction is received (S208).
- the recording / playback control unit 24 displays on the video display device 4 a reception screen for receiving an instruction to cancel registration of an optical disk that has already been registered after notifying that new registration of the optical disk cannot be performed, and canceling registration.
- the remote control receiving unit 33 accepts an instruction as to whether or not to perform. In addition, you may perform the process which receives also the instruction
- the registration cancellation instruction is received (S208: YES)
- the recording / playback control unit 24 uses the media ID and the information stored in the first area management unit of the storage unit 12. Performs processing to erase media key information. At this time, the allocation flag stored in the first area management unit is rewritten to a flag indicating that no optical disk is associated.
- step S207 If there is a storage area that is not associated with the optical disk in step S207 (S207: YES), or if step S209 is completed, the recording / playback control unit 24 performs processing for registering the optical disk in association with the storage area. This is performed (S210).
- step S210 the recording / playback control unit 24 stores the medium information specific to the optical disk loaded in the optical disk drive 11 in the management area of the storage unit 12 in association with the storage area not associated with the optical disk. Registration processing is performed. For example, when the optical disc 61 is associated with the first area of the storage unit 12, the recording / playback control unit 24 stores the media ID and media key information read from the optical disc 61 loaded in the optical disc drive 11 in the storage unit 12.
- the recording / playback control unit 24 rewrites the allocation flag stored in the first storage management unit to a flag indicating that the optical disc is associated. If the media ID is stored in the storage unit 12 in step S201 and the optical disc has been registered (S201: YES), or if step S210 is completed, the recording / playback control unit 24 performs recording or playback, etc. In order to execute the above process, access to the optical disk loaded in the optical disk drive 11 is started (S211).
- step S203 If the optical disk is read-only in step S203 (S203: YES), if no optical disk registration instruction is accepted in step S206 (S206: NO), or if no registration cancellation instruction is accepted in step S208 (S208: NO), the recording / playback control unit 24 starts to access the optical disc loaded in the optical disc drive 11 as an unregistered optical disc (S212). The recording device 1 ends the process when the optical disc is loaded.
- FIG. 6 is a flowchart showing a procedure of recording reservation processing performed by the recording apparatus 1.
- the recording / playback control unit 24 displays an acceptance screen for accepting designation of a program to be recorded on the video display device 4, and the remote control receiving unit 33 receives a signal from the remote controller 5 on which a user has performed a predetermined operation. By doing so, designation of a program to be recorded is accepted (S31).
- the video display device 4 displays an EPG (electronic program guide), and the user operates the remote controller 5 while confirming the EPG, whereby the program is designated on the electronic program.
- EPG electronic program guide
- the recording / playback control unit 24 generates reservation information for designating a program reserved for recording in accordance with the designation of the received program, and associates the reservation information with the media ID of the optical disc loaded in the optical disc drive 11. Is stored in the storage memory 27 (S32).
- the recording / playback control unit 24 causes the drive control unit 13 and the optical disc drive 11 to record reservation information on the optical disc loaded in the optical disc drive 11 (S33).
- the recording apparatus 1 ends the recording reservation process.
- FIG. 7 is a conceptual diagram showing an example of the contents of the reservation information stored in the storage memory 27.
- the media ID and the reservation information are stored in association with each other.
- the reservation information includes information indicating the broadcast date and time of the channel and program, and the program to be recorded is designated by these information. That is, the reservation information is information for designating a program in which program data is to be recorded, and corresponds to program designation information in the present invention.
- the reservation information may be stored in association with the entry number of the storage area of the storage unit 12 corresponding to the optical disc instead of the media ID. In this way, the storage memory 27 stores the reservation information in association with the registered optical disc.
- FIG. 8 is a flowchart showing the procedure of the recording process performed by the recording apparatus 1.
- the recording / playback control unit 24 measures the date and time based on the clock and determines at any time whether or not the broadcast date and time of the program indicated by the information included in the reservation information stored in the storage memory 27 has come (S401). . If it is not the broadcast date / time of the program yet (S401: NO), the recording / playback control unit 24 continues to measure the date / time. When the broadcast date and time of the program indicated by the information included in the reservation information has come (S401: YES), the recording / playback control unit 24 determines whether or not an optical disc is loaded in the optical disc drive 11 (S402).
- the recording / playback control unit 24 is associated with reservation information including information indicating the broadcast date and time when the optical disk loaded in the optical disk drive 11 is broadcast. It is determined whether or not (S403). In step S403, the recording / playback control unit 24 reads the media ID from the optical disc, and determines whether the media ID stored in the storage memory 27 in association with the reservation information matches the read media ID. Make a decision.
- step S403 if the media IDs match and the optical disc is an optical disc associated with the reservation information (S403: YES), the recording / playback control unit 24 shows a program representing the content of the program that has started broadcasting.
- a process of recording data on the optical disk by the optical disk drive 11 is performed (S404).
- step S404 the digital tuner 21 converts the broadcast signal of the channel indicated by the reservation information into stream data, the stream processing unit 23 performs data processing on the stream data, and the recording / playback control unit 24 converts the stream data into the interface unit 26.
- Stream data is program data that can reproduce a program by decoding and represents the contents of the program.
- step S404 the recording / playback control unit 24 causes the drive control unit 13 to record program data on the optical disc by the optical disc drive 11.
- the program data is recorded on the optical disc 61.
- the recording / playback control unit 24 records the program data on the optical disk and stores the program data in the storage area corresponding to the optical disk associated with the reservation information in the storage area of the storage unit 12. May be.
- the recording / playback control unit 24 records title information indicating the title of the program represented by the program data recorded on the optical disc on the optical disc (S406).
- the title of the program may be a title determined based on information included in the broadcast signal received by the digital tuner 21, such as a title displayed on the EPG, or set by operating the remote controller 5 by the user. You may use the title which was made.
- the recording / playback control unit 24 stores title information equivalent to the title information recorded on the optical disc in the storage memory 27 (S407). Note that the recording / playback control unit 24 may perform a process of storing the title information in a storage area corresponding to the optical disc associated with the reservation information within the storage area of the storage unit 12.
- the recording / playback control unit 24 stores the program data representing the contents of the program for which broadcasting has started in the storage area of the storage unit 12 corresponding to the optical disc associated with the reservation information ( S405). For example, when the reservation information for specifying the program at the broadcast date / time is associated with the optical disc 61 and no optical disc is installed in the optical disc drive 11 or an optical disc other than the optical disc 61 is installed in the optical disc drive 11.
- the recording / playback control unit 24 stores the program data in the first area of the storage unit 12. When the broadcast of the program ends and the recording of the program data ends, the recording / playback control unit 24 stores title information indicating the title of the program represented by the program data stored in the storage unit 12 in the storage memory 27. (S407).
- step S407 the recording / playback control unit 24 reflects the processing up to step S407 with the map data indicating the distribution state of the program data recorded on the optical disc or the program data stored in the storage unit 12. Update (S408).
- the recording / playback control unit 24 performs a process of deleting the reservation information of the program that has been recorded from the optical disk and the storage memory 27 (S409), and ends the recording process.
- FIG. 9A, FIG. 9B, FIG. 9C, FIG. 10A, FIG. 10B, and FIG. 10C are conceptual diagrams showing the state of the optical disk recording program data or the storage unit 12 storing program data.
- FIG. 9A shows a state in which the program data of program 1 is recorded in the first area of the storage unit 12 in step S405, and the program data included in at least one of the recorded contents of the optical disc 61 and the recorded contents of the first area.
- the recording image of the virtual disk (virtual disk) which records is shown.
- Program data of program 1 is stored in the first area, and accordingly, program data is also recorded on the virtual disk.
- FIG. 9B shows an example of the contents of map information stored in the first area management unit of the storage unit 12.
- the data distribution in the virtual disk and the first area is recorded by the head address and the data size. Furthermore, information indicating the synchronization state of program data between the first area and the disc 61 is recorded. It is shown that program data of the same size is recorded in the virtual disk and the first area, although the start addresses of the program data are different. Since the program data is not recorded on the optical disc 61, the synchronization state is not synchronized.
- the memory address and the data size are represented by decimal numbers.
- FIG. 9C shows an example of the content of title information.
- the data name and title name of the program data may be the same as shown in FIGS. 9A, 9B, and 9C, but may be different from each other.
- FIG. 10A, 10B, and 10C show a state in which the program data of the program 1 is recorded on the optical disc 61 and the program data of the program 1 is also stored in the first area corresponding to the optical disc 61 in step S404. .
- FIG. 10A the same program data as the program data stored in the first area is recorded on the optical disc 61.
- the recording / playback control unit 24 updates the map information so that the data distribution of the virtual disk becomes a data distribution reflecting the data distribution on the optical disk.
- FIG. 10B in the map information, the program data of program 1 is stored in both the virtual disk and the first area, and the recorded contents of the optical disc 61 and the stored contents of the first area are synchronized with respect to the program data of program 1. Is recorded.
- the location of the program data representing the same program on the virtual disk that is, the location on the optical disc and the location on the storage unit 12 are associated with each other. Therefore, by referring to the map information, it is possible to access program data representing the same program on both the optical disc and the storage unit 12.
- the title information also records that the optical disc 61 and the first area are synchronized with respect to the program data of program 1.
- FIG. 11 is a flowchart showing a processing procedure for recording a program being broadcast.
- the recording / playback control unit 24 performs a process of waiting for reception of a recording instruction at any time by receiving a predetermined signal transmitted from the remote controller 5 on which the user has performed a predetermined operation by the remote control receiving unit 33 (S411). .
- the recording / playback control unit 24 continues to wait for a recording instruction.
- a recording instruction is accepted (S411: YES)
- the recording / playback control unit 24 performs a process of storing program data representing the contents of the program being broadcast in the spare area 120 (S412).
- the digital tuner 21 converts the broadcast signal of the currently set channel or the last used channel into stream data
- the stream processing unit 23 performs data processing on the stream data
- the recording / playback control unit 24 inputs stream data from the interface unit 26 to the hybrid drive unit 10.
- step S411 a recording instruction including information indicating a channel may be received, and the digital tuner 21 may perform processing for converting a broadcast signal of a channel indicated by the information included in the recording instruction into stream data. Further, in step S412, the recording / playback control unit 24 performs a process of causing the drive control unit 13 to store the program data in the spare area 120 of the storage unit 12.
- the recording / playback control unit 24 performs a process of storing the program data in the spare area 120 while the user performs a predetermined operation such as pressing the recording stop button provided on the remote controller 5.
- the remote control receiving unit 33 receives a predetermined signal transmitted from the remote controller 33, and performs processing for waiting for reception of a recording stop instruction (S413). If the recording stop instruction is not received (S413: NO), the recording / playback control unit 24 continues to wait for the recording stop instruction while storing the program data. When a recording stop instruction is received (S413: YES), the recording / playback control unit 24 stops storing program data (S414). Note that the recording / playback control unit 24 may perform a process of stopping the storage of program data at a predetermined timing, such as the timing when the program being broadcast is ended, without receiving a recording stop instruction in step S413.
- the recording / playback control unit 24 performs a process of causing the video display device 4 to display a selection screen for selecting the recording destination optical disc stored in the spare area 120 (S415).
- the recording / playback control unit 24 transmits the video signal for the selection screen from the signal output unit 34 to the video display device 4 via the decoder 28 and the image processing unit 29, thereby causing the video display device 4 to Display the selection screen.
- the displayed selection screen is a selection screen including options for selecting either registered optical discs whose media IDs are stored in the management area of the storage unit 12 or unregistered optical discs.
- the user who has confirmed the selection screen operates the remote controller 5 to input an instruction to select one of the optical disks, and the remote controller 5 transmits a signal corresponding to the input instruction to the recording apparatus 1.
- the recording / playback control unit 24 receives the signal from the remote control 5 by the remote control receiving unit 33, thereby accepting the selection of the recording destination and determining whether or not the selection of the registered optical disc has been accepted (S416).
- the recording / playback control unit 24 moves to the spare area 120 to the storage area corresponding to the selected optical disk among the storage areas of the storage unit 12.
- the stored program data is copied (S417).
- the recording / playback control unit 24 performs processing for causing the drive control unit 13 to read the program data from the spare area 120 of the storage unit 12 and further store the program data in the storage area corresponding to the optical disc. For example, when the optical disc 61 is selected as the program data recording destination, the program data is copied to the first area of the storage unit 12.
- the recording / playback control unit 24 determines whether or not the optical disc selected as the recording destination of the program data is loaded in the optical disc drive 11 (S418). In step S418, the recording / playback control unit 24 determines whether an optical disk is loaded in the optical disk drive 11, and if the optical disk is loaded, is the selected optical disk based on the media ID of the optical disk? Determine. When the optical disc selected as the recording destination of the program data is loaded in the optical disc drive 11 (S418: YES), the recording / playback control unit 24 stores the program data copied to the storage area corresponding to the optical disc with the optical disc drive. 11 is performed to record on the optical disk (S419). In step S419, the recording / playback control unit 24 causes the drive control unit 13 to read program data from the storage unit 12 and cause the optical disc drive 11 to record the program data on the optical disc.
- the recording / playback control unit 24 stores the storage unit 12.
- the title information indicating the title of the program represented by the program data stored in is stored in the storage memory 27 (S420).
- the recording / playback control unit 24 updates the map information stored in the management area of the storage unit 12 to indicate the distribution state of the program data stored in the storage unit 12 (S421), and ends the recording process. To do.
- step S416 If it is determined in step S416 that selection of an unregistered optical disk is received instead of selection of a registered optical disk (S416: NO), the recording / playback control unit 24 determines whether an unregistered optical disk is loaded in the optical disk drive 11. It is determined whether or not (S422). If an unregistered optical disk is not loaded in the optical disk drive 11 (S422: NO), the recording / playback control unit 24 displays a message instructing the loading of the unregistered optical disk on the video display device 4 (S423). Then, the process returns to step S422.
- the recording / playback control unit 24 stores the loaded unregistered optical disk in the spare area 120 using the optical disk drive 11. Processing for recording the program data is performed (S424). The recording / playback control unit 24 ends the recording process.
- the recording apparatus 1 temporarily stores program data representing the program being broadcast in the spare area 120 of the storage unit 12, and then stores the program data in one of the storage areas corresponding to the registered optical disks. Or program data is recorded on an unregistered optical disc. Furthermore, when an optical disc associated with the storage area where the program data is copied is loaded in the optical disc drive 11, the program data is recorded on the optical disc. The process shown in the flowchart of FIG.
- step 11 shows the process of accepting the selection of the recording destination optical disk immediately after the storage of the program data is stopped, but the recording apparatus 1 performs the process after step S415 in step S211 or
- the program data may be executed at a timing separated from the process of storing the program data in the spare area 120, for example, after the process of S212 is completed.
- 12A, 12B, and 12C are conceptual diagrams showing the state of the storage unit 12 in which the program data stored in the spare area 120 is copied.
- the program from the spare area 120 to the first area in the state shown in FIG. 10A is shown.
- 2 shows a state in which the program data of program 2 is copied and the program data of program 2 is not yet recorded on the optical disc 61.
- the program data of program 2 is stored in the first area and the virtual disc, and the program data of program 2 is not yet recorded on the optical disc 61 that is not loaded in the optical disc drive 11.
- FIG. 12A the program data of program 2 is stored in the first area and the virtual disc, and the program data of program 2 is not yet recorded on the optical disc 61 that is not loaded in the optical disc drive 11.
- the program data of the program 1 and the program 2 are stored in both the virtual disk and the first area, and the program data of the program 2 not recorded on the optical disk 61 is stored in the optical disk 61. It is recorded that the recorded contents and the stored contents of the first area are not synchronized. As shown in FIG. 12C, the title information also records that the optical disc 61 and the first area are not synchronized with respect to the program data of program 2.
- the recording device 1 starts the access to the registered optical disc in step S211, and then performs a process of synchronizing the recorded content of the optical disc with the stored content in the corresponding storage area of the storage unit 12.
- FIG. 13 is a flowchart showing the procedure of the synchronization process performed by the recording apparatus 1.
- the recording / playback control unit 24 compares the recorded content of the optical disk with the stored content in the storage area corresponding to the optical disk in the storage area of the storage unit 12. It is determined whether unrecorded program data is stored in a storage area corresponding to the optical disc (S51). In step S51, for example, it is determined whether program data not recorded on the optical disc 61 is stored in the first storage area of the storage unit 12.
- the recording / playback control unit 24 copies the unrecorded program data from the storage unit 12 to the optical disc (S52).
- the recording / playback control unit 24 causes the drive control unit 13 to read unrecorded program data from the storage unit 12, and causes the optical disc drive 11 to record the read program data on the optical disc.
- the recording / playback control unit 24 updates the title information stored in the storage memory 27 to reflect the state in which the program data is recorded on the optical disc (S53), and stores it in the management area of the storage unit 12.
- the map information is updated (S54).
- the recording / playback control unit 24 updates the map information stored in the first area management unit of the storage unit 12 to reflect the state in which the optical disc 61 has recorded the program data, for example.
- the recording / playback control unit 24 determines whether or not the reservation information related to the program data recorded on the optical disc, that is, the reservation information generated for recording the program represented by the program data is recorded on the optical disc. (S55).
- the recording / playback control unit 24 sends the corresponding reservation information from the optical disc to the drive control unit 13 using the optical disc drive 11. Erasing is performed (S56).
- step S51 When unrecorded program data is not stored on the optical disc in step S51 (S51: NO), reservation information related to the program data recorded on the optical disc in step S55 is not recorded on the optical disc (S55: NO), or After step S56 is completed, the recording / playback control unit 24 determines whether reservation information that is not yet stored in the storage memory 27 is recorded on the optical disc (S57). If reservation information that is not yet stored in the storage memory 27 is recorded on the optical disk (S57: YES), the recording / playback control unit 24 copies the reservation information that is not stored from the optical disk to the storage memory 27 (S58). ).
- step S58 the recording / playback control unit 24 causes the drive control unit 13 to read reservation information that is not yet stored from the optical disk by the optical disk drive 11, and inputs the reservation information to the back-end unit 20 via the interface unit 14.
- the inputted reservation information is stored in the storage memory 27.
- the reservation information recorded on the optical disc and the reservation information stored in the storage memory 27 match. If unstored reservation information is not recorded on the optical disc in step S57 (S57: NO), or after step S58 ends, the recording / playback control unit 24 ends the synchronization process.
- program data that has been stored in the storage unit 12 in steps S401 to S409 or steps S411 to S424 but not yet recorded on the optical disc is recorded on the optical disc.
- FIG. 14A, 14B, and 14C are conceptual diagrams showing the result of synchronizing the recorded content of the optical disc with the stored content of the storage unit 12, and when the optical disc 61 is loaded in the optical disc drive 11 in the state shown in FIG. 12A.
- the synchronization result is shown.
- FIG. 14A on the optical disc 61, program data of the same program 1 and program 2 as the program data stored in the first area is recorded.
- the data distribution of the virtual disk is a data distribution reflecting the data distribution on the optical disk.
- FIG. 14B in the map information, the program data of program 1 and program 2 are stored in both the virtual disk and the first area, and the recorded contents of the optical disk 61 and the stored contents of the first area for both program data. And are synchronized.
- the location of program data representing the same program on the virtual disk that is, the location on the optical disc and the location on the storage unit 12 are associated with each other. Therefore, by referring to the map information, it is possible to access program data representing the same program on both the optical disc and the storage unit 12.
- the title information also records that the program data of program 1 and program 2 are synchronized between the optical disc 61 and the first area.
- the address and data size are shown by decimal numbers for the sake of simplicity, but in reality, the address and data size are managed by numerical values other than decimal, such as hexadecimal numbers. There are many things.
- the recording device 1 stores the program data of the program 1 in the first area of the storage unit 12 corresponding to the optical disc 61 by a recording process using reservation information associated with the optical disc 61. Further, the recording device 1 stores the program data of the program 2 in the spare area 120 of the storage unit 12 by a recording process in response to receiving a recording instruction for instructing recording of program data representing the contents of the program being broadcast.
- the recording apparatus 1 records the program data of the program 1 stored in the first area on the optical disc 61 associated with the first area, and stores the program 2 of the program 2 stored in the spare area 120.
- the recording apparatus 1 copies the program data of the program 2 stored in the spare area 120 to the first area, and stores the program data of the program 1 and the program 2 stored in the first area on the optical disc 61. To record.
- the recording apparatus 1 can reproduce a program based on the program data recorded on the optical disc after the synchronization process is completed.
- FIG. 16 is a flowchart showing the procedure of program playback processing performed by the recording apparatus 1.
- the remote controller receiver 33 receives an instruction to start program reproduction processing, and the recording / reproduction controller 24 selects a program represented by the program data recorded on the optical disc.
- a program selection screen for selecting a program to be reproduced is displayed on the video display device 4 (S61).
- the recording / playback control unit 24 extracts the title of the program represented by the program data recorded on the optical disc loaded in the optical disc drive 11 from the title information stored in the storage memory 27, and extracts it.
- the video signal necessary for displaying the program selection screen including the title is output from the signal output unit 34 to the video display device 4.
- the video display device 4 displays a program selection screen based on the video signal from the recording device 1.
- On the program selection screen a list of programs represented by the program data recorded on the optical disc, that is, a list of reproducible programs is displayed.
- the recording / playback control unit 24 may execute the process of step S61 immediately after the synchronization process shown in the flowchart of FIG.
- the recording / playback controller 24 selects the program to be played back from the user. Accept.
- the recording / playback control unit 24 waits for reception of a program playback instruction by receiving selection of a program to be played back (S62). If there is no reception of a program playback instruction (S62: NO), the recording / playback control unit 24 continues to wait for reception of a program playback instruction.
- the recording / playback control unit 24 stores program data representing the program to be played back in the storage area associated with the optical disk in the storage unit 12.
- step S63 it is determined whether or not (S63). For example, when the program 1 represented by the program data recorded in the optical disc 61 is to be reproduced, it is determined whether or not the program data of the program 1 is stored in the first area.
- the recording / playback control unit 24 refers to the title information, and the program data is stored in the storage unit 12 when the synchronization status information associated with the title name of the program to be played back indicates synchronization. It may be determined that the program data is not stored when the synchronization is not indicated. Note that the recording / playback control unit 24 may perform a process of determining whether program data is stored in the storage unit 12 by referring to the map information stored in the management area of the storage unit 12. .
- step S64 the recording / playback control unit 24 identifies the address where the program data is stored by referring to the map information stored in the management area of the storage unit 12, and plays it back to the drive control unit 13.
- Program data representing a program to be read is read from the storage unit 12 and the program data is input to the back-end unit 20 via the interface unit 14.
- the recording / playback control unit 24 causes the decoder 28 to decode the input program data into a video signal and an audio signal, causes the image processing unit 29 to perform image processing, and sends a video from the signal output unit 34 to the video display device 4.
- a signal and an audio signal are output.
- the video display device 4 reproduces a program by displaying video and outputting audio based on the video signal and audio signal from the recording device 1.
- the recording / playback control unit 24 When program data representing a program to be played back is not stored in the storage area associated with the optical disc in the storage unit 12 (S63: NO), the recording / playback control unit 24 is attached to the optical disc drive 11. A process of reproducing the program is performed based on the program data recorded on the existing optical disc (S65).
- the recording / playback control unit 24 causes the drive control unit 13 to read program data representing a program to be played back from the optical disc by the optical disc drive 11, and sends the program data to the back end unit 20 via the interface unit 14. To input.
- the recording / playback control unit 24 causes the decoder 28 to decode the program data, causes the image processing unit 29 to perform image processing, and causes the signal output unit 34 to output a video signal and an audio signal.
- the video display device 4 reproduces a program based on the video signal and the audio signal from the recording device 1.
- the recording apparatus 1 which is a recording apparatus according to the present invention is provided with the storage unit 12 having a plurality of storage areas separately from the optical disk drive 11, and is associated with a specific storage area and the medium ID of the optical disk. Is stored in association with a specific storage area.
- the recording device 1 stores reservation information for recording in association with the optical disc, and records the program data on the optical disc when the optical disc is loaded when the program is broadcast, and on the optical disc when the optical disc is not loaded. Program data is stored in a corresponding storage area.
- the recording apparatus 1 receives a recording instruction for recording program data of a program being broadcast, the recording apparatus 1 stores the program data in the spare area 120 included in the storage unit 12 and then responds to the user's instruction. Then, the program data stored in the spare area 120 is recorded on the registered optical disk or the unregistered optical disk.
- the recording apparatus 1 can reliably transmit the program even if the recording of the program being broadcast is suddenly instructed.
- the program can be recorded.
- the recording device 1 first stores the program data in the spare area 120 without recording the program data on the optical disc even if the optical disc is mounted. Therefore, an inappropriate situation may occur in which program data is recorded on an optical disc that should not be recorded with program data, such as another program being recorded on an optical disc that has been installed to record a specific program. Can be prevented. Since the program data stored in the spare area 120 can be recorded on a registered optical disk stored with the media ID associated with the storage area, the recording apparatus 1 stores the program data in which the program being broadcast is recorded.
- the recording apparatus 1 includes an optical disk on which program data is intentionally recorded. Apart from that, it is possible to create an optical disc in which program data is arbitrarily recorded.
- the recording apparatus 1 registers the optical disk and stores the reservation information in association with the optical disk, the program data is stored in the memory even if the optical disk is not installed at the start of the program broadcast. When installed, program data is recorded on the optical disk. Therefore, even if the user has forgotten to attach the optical disk to the recording device 1 even when the program starts broadcasting, the recording device 1 can reliably record the program. Further, even when the user mistakenly installs the optical disc different from the specific optical disc on which the program data is to be recorded, the program data is not recorded on the erroneously attached optical disc. Later, program data is recorded on the correct optical disc. Thus, in the present invention, it is possible to reliably record program data. Moreover, since the recording apparatus 1 can reproduce a program based on the program data stored in the storage unit 12, it is possible to reproduce the program smoothly, and to suppress stress applied to the user.
- the medium ID pre-recorded on the optical disk is used as the medium information unique to the optical disk.
- the recording apparatus 1 is different for each optical disk. Information may be written on the optical disc, and the written information may be used as the media ID.
- the digital tuner 21 receives a broadcast signal.
- the recording apparatus 1 may include an analog tuner that receives an analog broadcast broadcast signal. In the form including an analog tuner, the analog tuner is connected to the encoder 22.
- a mode has been described in which an instruction to record an immediate program data is received by the user pressing the recording button, but the recording apparatus 1 issues an instruction to record the program data by other methods. The form which accepts may be sufficient.
- the recording device 1 is configured to receive an instruction to record program data by displaying an EPG including a currently broadcast program on the video display device 4 and selecting the program being broadcast using the EPG. Also good.
- the optical disk is used as the detachable recording medium in the present invention.
- the present invention is not limited to this, and the present invention can be used as a removable recording medium as a portable hard disk or memory.
- curd, may be sufficient.
- the recording apparatus of the present invention is the recording apparatus 1.
- the recording apparatus of the present invention is not limited to this, and the video display apparatus 4 and the recording apparatus 1 are integrated.
- the form may be sufficient.
- the recording apparatus of the present invention has been described as recording the program data of a program broadcast by television broadcasting.
- the present invention is not limited to this, and the recording apparatus of the present invention is not limited to audio broadcasting.
- the form which records the program data of the program broadcast by broadcasts other than television broadcasts, such as data broadcast may be sufficient.
- the content data in the present invention is program data.
- the present invention is not limited to this, and the content data is broadcast as arbitrary program data, video data, audio data, or the like. Data other than the program data of the program may be used.
- the recording apparatus of the present invention only needs to accept the input of content data other than the program data and store the input content data in the spare area 120 of the storage unit 12.
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Management Or Editing Of Information On Record Carriers (AREA)
- Television Signal Processing For Recording (AREA)
- Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
Abstract
Description
図1は、本発明の記録装置である録画装置1の外観を示す概念図である。録画装置1には、テレビジョン受像機である映像表示装置4が接続されている。録画装置1は、映像表示装置4に対して映像信号及び音声信号を出力し、映像表示装置4は、映像信号に基づいた映像を表示し、音声信号に基づいた音声を出力する。また録画装置1は、使用者によって操作されるリモコン(リモートコントローラ)5からの信号を受信することにより、録画予約の指示等の各種の指示を受け付ける。
10 ハイブリッドドライブ部
11 光ディスクドライブ
12 記憶部
120 予備領域(非関連記憶領域)
13 ドライブ制御部
20 バックエンド装置
21 デジタルチューナ
23 ストリーム処理部
24 録画/再生制御部
27 保存用メモリ
28 デコーダ
29 画像処理部
33 リモコン受信部
34 信号出力部
4 映像表示装置
5 リモコン(リモートコントローラ)
60、61 光ディスク(記録媒体)
Claims (4)
- 着脱可能な記録媒体にコンテンツデータを記録する記録装置において、
コンテンツデータを記憶することができる複数の記憶領域を有する記憶部と、
記録媒体に固有の媒体情報を前記複数の記憶領域の内の一の記憶領域に関連付けて記憶する手段と、
前記複数の記憶領域の内の一の記憶領域を、媒体情報の関連付けができない非関連記憶領域に設定する手段と、
コンテンツデータの記録指示を受け付ける手段と、
該手段が前記記録指示を受け付けた場合に、前記非関連記憶領域に、前記コンテンツデータを記憶する手段と
を備えることを特徴とする記録装置。 - 媒体情報を関連付けている記憶領域に、前記非関連記憶領域に記憶しているコンテンツデータを記憶させる手段と、
前記記憶領域に関連付けて媒体情報を記憶してある記録媒体が装着された場合に、前記記憶領域に記憶しているコンテンツデータの内で前記記録媒体に記録していないコンテンツデータを前記記録媒体に記録する手段と
を更に備えることを特徴とする請求項1に記載の記録装置。 - 記憶領域に関連付けて媒体情報を記憶していない記録媒体が装着された場合に、前記非関連記憶領域に記憶しているコンテンツデータを前記記録媒体に記録する手段を更に備えること
を特徴とする請求項1又は2に記載の記録装置。 - コンテンツデータは、放送される番組の内容を表すデータであり、
媒体情報を記憶してある記録媒体に関連付けて、コンテンツデータを記録すべき番組を指定する番組指定情報を記憶する手段と、
記憶してある番組指定情報で指定された番組の放送時に、前記番組指定情報を関連付けられた記録媒体が装着されているか否かを判定する手段と、
前記記録媒体が装着されている場合に、前記記録媒体に前記番組のコンテンツデータを記録する手段と、
前記記録媒体が装着されていない場合に、前記記録媒体の媒体情報を関連付けてある記憶領域に前記番組のコンテンツデータを記憶させる手段と
を更に備えることを特徴とする請求項1から3までのいずれか一つに記載の記録装置。
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JP2005276389A (ja) * | 2004-03-26 | 2005-10-06 | Sharp Corp | 情報記録再生方法及び装置 |
JP2005346772A (ja) * | 2004-05-31 | 2005-12-15 | Matsushita Electric Ind Co Ltd | 再生装置及び再生方法 |
JP2005346773A (ja) * | 2004-05-31 | 2005-12-15 | Matsushita Electric Ind Co Ltd | 再生装置及び再生方法 |
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JP3551045B2 (ja) * | 1998-11-02 | 2004-08-04 | 松下電器産業株式会社 | データ送受信装置および方法 |
JP2000215547A (ja) * | 1999-01-27 | 2000-08-04 | Matsushita Electric Ind Co Ltd | 記録再生装置及びプログラム記録媒体 |
DE602004017058D1 (de) * | 2003-12-18 | 2008-11-20 | Matsushita Electric Ind Co Ltd | Aufzeichnungsvorrichtung, integrierte schaltung für eine aufzeichnungsvorrichtung, aufzeichnungsverfahren, computerprogramm und computeraufzeichnungsmedium zur ermöglichung der inhaltsaufzeichnung |
JP2006195588A (ja) * | 2005-01-11 | 2006-07-27 | Sony Corp | ディスク・システム及びディスク管理方法、並びにコンピュータ・プログラム |
JP4348709B2 (ja) * | 2005-03-31 | 2009-10-21 | 日本電気株式会社 | マルチメディア対応フロア権管理システム、方法、プログラム及び記録媒体、メディアサーバ及び端末 |
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JP2005276389A (ja) * | 2004-03-26 | 2005-10-06 | Sharp Corp | 情報記録再生方法及び装置 |
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