JP2007049331A - Recording apparatus, method, and program, and recording and reproducing apparatus and method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a technology for cumulatively recording many AV data without the need for noticing a type of a recording medium. <P>SOLUTION: A recording signal processing section 14 applies prescribed signal processing to received AV data and records the processed AV data to an HDD 15. A title management section 13 generates play list information associated with the AV data and a disk drive 16 records the generated play list information to a DVD 23. In the case of reproduction, a title control section 17 generates a list display menu of the AV data on the basis of the play list information recorded on the DVD 23 and outputs the list via an output processing section 24. When target AV data are selected from the list display through an operation of a user applied to an operation section 19, corresponding AV data are read from the HDD 15, and a decoder 18 decodes the AV data, which are reproduced externally. The user can record/reproduce many AV data to/from the HDD 15 without the need for noticing the type of the recording media in this way in the same sense as recording of the AV data to the DVD. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a recording apparatus having a large capacity recording medium and a detachable recording medium, a recording method, a recording program, a recording / reproducing apparatus, and a recording / reproducing method.

  In recent years, as a recording / reproducing apparatus for recording AV (Audio / Video) data including video and audio, instead of a VTR (Video Tape Recorder) using a magnetic tape as a recording medium, a recordable DVD (Digital Versatile Disc) and Recording and playback devices such as HDD-equipped DVD recorders using HDDs (Hard Disc Drives) as recording media are rapidly spreading. Such a recording / reproducing apparatus is provided with, for example, a tuner compatible with digital television broadcasting and a function of acquiring EPG (Electronic Program Guide) information, and can perform scheduled recording automatically based on the EPG information.

  When recording AV data with a HDD-equipped DVD recorder, the user performs recording by designating a recording medium to be used from the HDD and the DVD. When AV data is recorded on the HDD, the HDD is preinstalled in the recording / reproducing apparatus, so that it can be recorded simply by pressing a recording button, for example. In addition, when the capacity of the HDD is sufficiently large, it is not necessary to worry about the recordable time, and a large number of AV data can be recorded.

  On the other hand, when AV data is recorded on a DVD, a recordable DVD, which is a recording medium, is mounted on a disk drive provided in the recording / reproducing apparatus to record the AV data. Since a recordable DVD is a removable recording medium, a user who has used a VTR as a recording / reproducing apparatus until now can operate intuitively in the same way as a VTR. In addition, since the title, recording date and time of the recorded AV data can be entered on the surface of the recording medium or a storage case, for example, by recording separately for each user, each genre, etc. Easy classification and management of recorded AV data.

  Furthermore, when reproducing the AV data recorded on the DVD, the AV data recorded on the DVD can be confirmed from the contents entered on the surface of the DVD or the storage case. Therefore, a DVD on which target AV data is recorded can be selected, and a simple operation of mounting the DVD on a recording / playback apparatus and performing playback is possible.

  FIG. 8 shows an exemplary configuration of a conventional recording / reproducing apparatus 100. Here, a case will be described as an example where a digital television broadcast is received using an HDD-mounted DVD recorder using an HDD and a recordable DVD as a recording medium as the recording / reproducing apparatus 100.

  At the time of recording, AV data and EPG information are extracted by the tuner 102 from the radio waves of the digital television broadcast received by the antenna 101, the extracted AV data is supplied to the recording signal processing unit 104, and the EPG information is the title management unit. 103.

  The title management unit 103 generates recording control information for controlling recording in the recording signal processing unit 104 in accordance with EPG information or an operation on an operation unit (not shown), and supplies the recording control information to the recording signal processing unit 104. Also, the title management unit 103 generates title information indicating the attribute information of the program to be recorded and playlist information indicating a list of AV data recorded on the DVD and / or HDD based on the EPG information, and sends it to the selector 117A. Supply.

  The recording signal processing unit 104 selects one of the AV data supplied from the tuner 102 and the AV data supplied from the outside via the input terminal 111, and applies the AV data based on the recording control information. Then, a predetermined signal processing is performed and supplied to the selector 117B.

  The selectors 117A and 117B, for example, switch so as to output the supplied signal to a recording medium selected by an operation on an operation unit (not shown). When the HDD 105 is selected as the recording medium, the selector 117 </ b> A outputs the title information and playlist information supplied from the title management unit 103 to the HDD 105. The selector 117 </ b> B outputs the AV data supplied from the recording signal processing unit 104 to the HDD 105. The title information, playlist information, and AV data supplied to the HDD 105 are recorded in the HDD 105 in association with each other.

  On the other hand, when the DVD 113 is selected as the recording medium, the selector 117A supplies the title information and playlist information supplied from the title management unit 103 to the multiplexer (MUX) unit 115. The selector 117 </ b> B supplies the AV data supplied from the recording signal processing unit 104 to the multiplexer unit 115.

  The multiplexer unit 115 performs predetermined signal processing on the title information, playlist information, and AV data supplied from the selectors 117A and 117B, maps it to a DVD-VIDEO format, for example, and supplies it to the disc drive 106. The disk drive 106 performs processing such as error correction coding and recording coding on the data supplied from the multiplexer unit 115, further modulates the data, and records it as a recording signal on the DVD 113 as a recording medium.

  At the time of reproduction, when the HDD 105 is selected as the recording medium, the title information and playlist information read from the HDD 105 are supplied to the selector 117C, and the AV data is supplied to the selector 117D.

  On the other hand, when the DVD 113 is selected as the recording medium, the reproduction signal from the DVD 113 is demodulated by the disk drive 106, and the data obtained by decoding the recording code and the error correction code on the demodulated signal is obtained. It is read out and supplied to the demultiplexer (DeMUX) unit 116. The demultiplexer unit 116 extracts title information, playlist information, and AV data from the data supplied from the disk drive 106. Title information and playlist information are supplied to the selector 117C, and AV data is supplied to the selector 117D.

  For example, the selectors 117C and 117D perform switching so that a signal is supplied from a recording medium selected by operating an operation unit (not shown). The selector 117C supplies the title information and playlist information input from the HDD 105 or the demultiplexer unit 116 to the title control unit 107. The selector 117 </ b> D supplies AV data input from the HDD 105 or the demultiplexer unit 116 to the decoder 108.

  In response to an operation on the operation unit 109, the title control unit 107 creates a screen displaying a list of information such as file names and titles of AV data based on the title information and playlist information supplied from the selector 117C, and outputs them. This is supplied to the processing unit 114. In addition, the title control unit 107 generates reproduction control information for controlling reproduction of the selected AV data when the user operates an operation unit (not shown), and supplies the reproduction control information to the decoder 108.

  Based on the playback control information from the title control unit 107, the decoder 108 decodes the AV data supplied from the selector 117 </ b> D and supplies it to the output processing unit 114. The output processing unit 114 outputs the AV data supplied from the decoder 108 and the list display screen supplied from the title control unit 107 to the outside via the output terminal 112, and is connected to an externally connected television receiver or monitor. Video display and audio output are performed by a display device such as a device.

  As described above, in the HDD-equipped DVD recorder, the user selects and records a recording medium when recording a television program or AV data supplied from outside. For this reason, the user needs to be aware of whether the recording medium is an HDD or a DVD. Also, when reproducing AV data recorded on a recording medium, the user needs to perform search and reproduction while being aware of which recording medium the recorded program is recorded on. Patent Document 1 describes a technique for automatically selecting an appropriate recording system from a plurality of recording systems.

JP-A-2005-79955

  When recording AV data on a DVD, the recording capacity is limited by the DVD standard, so that only a limited amount of AV data can be recorded on one DVD. Therefore, for example, when recording a large amount of AV data that exceeds the recording capacity of one DVD, it is once recorded on the HDD, and thereafter, for example, divided and recorded on a plurality of DVDs. It was necessary to reduce the size of the AV data and reduce the capacity of the AV data so that it could fit on one DVD.

  On the other hand, the HDD has a larger capacity than the DVD, and can record a large amount of AV data and a large number of AV data. However, there are the following problems when recording on the HDD. When a plurality of users share one recording / reproducing apparatus and AV data is recorded on the HDD, AV data recorded by the plurality of users is mixed in the HDD. Some recording / reproducing apparatuses have, for example, a folder for each user in the HDD and a function of managing recorded AV data. However, when recording AV data, the recording destination folder has to be set one by one, and the operation is troublesome, so this function is often not used much. Therefore, there is a problem that it is difficult to search for AV data recorded by a specific user from among a large number of AV data recorded on the HDD.

  Further, in order to search for recorded AV data, it is necessary to turn on the recorder and search for the target AV data on the title list screen, and it takes time to reproduce the target AV data. There was a point. In particular, when a large number of AV data is recorded, it is difficult to select target AV data from among a plurality of pages for displaying a list of recorded AV data.

  Accordingly, an object of the present invention is to provide a recording apparatus, a recording method and a recording program, and a recording / reproducing apparatus and recording / reproducing method capable of accumulatively recording AV data without considering the recording medium. .

  Another object of the present invention is to provide a recording apparatus, a recording method, a recording program, and a recording / reproducing apparatus that can easily search AV data recorded by itself from a large number of accumulated AV data. An apparatus and a recording / reproducing method are provided.

  In order to solve the above-described problem, the first invention is a first recording medium for accumulatively recording an input video signal, and information indicating an address at which the video signal is recorded on the first recording medium. A playlist information generation unit that generates playlist information associated with a video signal and a recording unit that records data on a removable second recording medium, and the playlist generated by the playlist information generation unit A recording apparatus is characterized in that information is recorded on a removable second recording medium.

  The second aspect of the invention records, on the second removable recording medium, playlist information in which the video signal is associated with information indicating an address in which the video signal is stored cumulatively on the first recording medium. The recording method is characterized by the above.

  According to a third aspect of the invention, playlist information in which video information is associated with information indicating an address at which a video signal is stored cumulatively on the first recording medium is recorded on the removable second recording medium. A recording program that causes a computer program to execute the recording method described above.

  According to a fourth aspect of the present invention, there is provided a first recording medium for accumulatively recording an input video signal, a play in which the video signal is associated with information indicating an address at which the video signal is recorded on the first recording medium. A playlist information generating unit for generating list information, and the playlist information generated by the playlist information generating unit on a removable second recording medium, and the playlist information recorded on the second recording medium A recording / reproducing apparatus comprising: a reproducible recording / reproducing unit; and a reproduction control unit for reproducing a video signal recorded on the first recording medium based on playlist information reproduced from the second recording medium. It is.

  The fifth aspect of the invention relates to associating the video signal with the step of recording the input video signal on the first recording medium, and the information indicating the address at which the video signal is recorded on the first recording medium. A playlist information generating step for generating the playlist information, a step of recording the playlist information generated in the playlist information generating step on a removable second recording medium, and a recording on the second recording medium Recording comprising: a step of reproducing playlist information; and a reproduction control step of reproducing a video signal recorded on the first recording medium based on the playlist information reproduced from the second recording medium. It is a playback method.

  As described above, in the first, second, and third inventions, the playlist information that associates the video signal with the information indicating the address in which the video signal is stored in the first recording medium can be attached and detached. Since the recording is performed on the second recording medium, a larger number of video signals can be recorded as compared with the case where the video signals are recorded on the second recording medium.

  In the fourth and fifth aspects of the invention, the information indicating the address where the video signal is stored cumulatively on the first recording medium and the playlist information in which the video signal is associated can be attached to the second recording medium. Since the video signal recorded on the first recording medium is reproduced based on the playlist information recorded on the medium and recorded on the second recording medium, the video recorded on the first recording medium The target video signal can be easily reproduced from the signal.

  In the present invention, AV data is recorded on a large-capacity recording medium by the same operation as recording AV data on a detachable recording medium. Therefore, the AV data can be detachable without being aware of the recording medium. There is an effect that a larger number of AV data can be recorded as compared with the case of recording on a recording medium.

  In addition, since the present invention reproduces AV data recorded on a large-capacity recording medium on the basis of playlist information recorded on a removable recording medium, it is recorded on a large-capacity recording medium. There is an effect that the AV data recorded by itself can be easily retrieved from the AV data.

  The first embodiment of the present invention will be described below. According to the present invention, AV (Audio / Video) data including video and audio is recorded on a large-capacity recording medium mounted on the recording / reproducing apparatus, and information indicating a correspondence relationship between the recording / reproducing apparatus and the AV data is recorded. Records on a removable recording medium. When AV data recorded on a large-capacity recording medium mounted on the recording / reproducing apparatus is reproduced, the AV data recorded on the detachable recording medium is mounted by attaching the detachable recording medium to the recording / reproducing apparatus. Based on the management information, AV data recorded on a large-capacity recording medium mounted on the recording / reproducing apparatus is reproduced.

  FIG. 1 is a functional block diagram showing an example of the operation of the recording / reproducing apparatus 1 according to the first embodiment of the present invention. In this example, the recording / reproducing apparatus 1 uses an HDD (Hard Disc Drive) as a large-capacity recording medium mounted on the recording / reproducing apparatus, and an HDD using a recordable DVD (Digital Versatile Disc) as a removable recording medium. A case of an on-board DVD recorder will be described, and a case of receiving a digital television broadcast will be described.

  The antenna 11 receives digital television broadcast radio waves and supplies them to the tuner 12. The tuner 12 demodulates the radio wave supplied from the antenna 11 and extracts the signal of the selected channel. The tuner 12 extracts AV data and EPG information from the extracted signal, supplies the extracted AV data to the recording signal processing unit 14, and supplies the EPG information to the title management unit 13.

  The title management unit 13 generates recording control information for controlling recording in the recording signal processing unit 14 according to the EPG information supplied from the tuner 12 and the operation of the operation unit 19, and supplies the recording control information to the recording signal processing unit 14. . Further, the title management unit 13 generates title information indicating the attribute information of the program to be recorded based on the EPG information, and supplies the generated title information to the HDD 15. Further, the title management unit 13 generates playlist information regarding the AV data recorded in the HDD 15 and supplies the generated playlist information to the disk drive 16.

  The recording signal processing unit 14 selects one of the AV data supplied from the tuner 12 and the AV data supplied from the outside via the input terminal 21 according to an operation on the operation unit 19, for example. The selected AV data is subjected to predetermined signal processing, for example, compression encoding processing according to the MPEG2 (Moving Picture Experts Group 2) system. The AV data subjected to the compression encoding process is supplied to the HDD 15 based on the recording control information supplied from the title management unit 13, and is recorded in association with the title information and the playlist information.

  The disc drive 16 records the playlist information supplied from the title management unit 13 on the DVD 23. Further, the disk drive 16 reads the playlist information recorded on the DVD 23 and supplies it to the title control unit 17.

  Based on the playlist information supplied from the disk drive 16, the title control unit 17 creates a screen displaying a list of information such as the file name and title of AV data, and supplies the screen to the output processing unit 24. Further, the title control unit 17 generates reproduction control information for reproducing AV data selected by the user's operation on the operation unit 19 and supplies the reproduction control information to the decoder 18.

  The decoder 18 decodes the AV data supplied from the HDD 15 based on the reproduction control information from the title control unit 17 and supplies the AV data to the output processing unit 24. The output processing unit 24 outputs the AV data supplied from the decoder 18 and the list display screen supplied from the title control unit 17 to the outside via the output terminal 22. A display device such as a television receiver or a monitor device is connected to the outside, and video display and audio output are performed.

  The operation unit 19 uses an operation unit provided on the panel of the recording / reproducing apparatus 1, a remote control commander, or the like, and is operated at the time of recording reservation or search during reproduction. The remote control commander can operate the recording / reproducing apparatus 1 using an infrared signal, for example. The remote control commander generates a control signal corresponding to the operation by the user's operation. The generated control signal is modulated into an infrared signal and transmitted. An infrared signal transmitted from the remote control commander is received by an infrared light receiving unit (not shown) of the recording / reproducing apparatus 1 and demodulated into a control signal. The demodulated control signal is supplied to the CPU 20.

  A CPU (Central Processing Unit) 20 controls each unit of the recording / reproducing apparatus 1 according to a control signal supplied from the operation unit 19, for example, in accordance with a program stored in advance in a ROM (Read Only Memory) (not shown).

  FIG. 2 shows an example of playlist information generated by the title management unit 13. The playlist information is information representing the relationship between each AV data recorded in the HDD 15 and the address of the AV data. In the example of FIG. 2, the playlist information includes items of “device ID”, “title”, and “file name (path)”. “Device ID” indicates information unique to the recording / reproducing apparatus for identifying the recording / reproducing apparatus. “Title” indicates the title of the AV data recorded in the HDD 15. The title is based on EPG information, for example. “File name (path)” indicates the file name of the AV data recorded in the HDD 15 and the location where the AV data is recorded.

  Next, the operation of the recording / reproducing apparatus 1 according to the first embodiment of the invention will be described. When recording AV data by digital television broadcasting, radio waves of digital television broadcasting received by the antenna 11 are supplied to the tuner 12, demodulated by the tuner 12, and a signal of the selected channel is extracted and extracted. AV data and EPG information are extracted from the signal. The extracted AV data is supplied to the recording signal processing unit 14. Also, the EPG information is supplied to the title management unit 13.

  The title management unit 13 generates title information based on the EPG information, and records the generated title information in the HDD 15. In addition, the title management unit 13 generates playlist information regarding the AV data to be recorded, supplies the generated playlist information to the disk drive 16, and records it on the DVD 23 attached to the disk drive 16. Note that the title information may be recorded on the DVD 23.

  When using a DVD-R (Digital Versatile Disc-Recordable) or DVD + R (Digital Versatile Disc + R format) as a recordable DVD for recording playlist information, for example, the playlist information using an incremental write recording method. Record. By not performing the finalizing process when the disc is ejected, it is possible to cope with the addition and deletion of playlist information to be described later. Of course, DVD-RW (Digital Versatile Disc-Rerecordable), DVD + RW (Digital Versatile Disc + RW format), DVD-RAM (Digital Versatile Disc-Rewritable), etc. can also be used as DVD23. Further, a packet write recording system can be used as a recording system for the DVD 23.

  Further, the title management unit 13 generates recording control information for controlling the recording of AV data to the HDD 15 based on the supplied EPG information, the operation on the operation unit 19, playlist information, and the like, and the recording signal processing unit 14 To supply. The recording signal processing unit 14 performs predetermined signal processing on the supplied AV data, and records the AV data on the HDD 15 based on the recording control information supplied from the title management unit 13.

  Processing during playback will be described. The user attaches the DVD 23 on which the playlist information is recorded to the disk drive 16 and performs an operation for instructing the operation unit 19 to search for a title. In response to this instruction, the title control unit 17 reads playlist information from the DVD 23 loaded in the disk drive 16 and collates the device ID described in the playlist information with the device ID of the recording / reproducing apparatus 1. If the device IDs match as a result of the collation, the title control unit 17 creates a screen displaying a list of information such as titles and file names of AV data described in the playlist information. The created list display screen is output to an external display device or the like via the output processing unit 24.

  When the user operates the operation unit 19 to select target AV data from the list-displayed AV data, the title control unit 17 selects the selected AV data based on the path described in the playlist information. Reproduction control information for reproduction is generated and supplied to the decoder 18. The decoder 18 reads AV data from the HDD 15 based on the reproduction control information supplied from the title control unit 17 and decodes the read AV data. The decoded AV data is supplied to the output processing unit 24, outputted to the outside through the output terminal 22, and reproduced by a display device or the like.

  Thus, at the time of recording, AV data is recorded on the HDD 15, and playlist information is recorded on the DVD 23. At the time of reproduction, the AV data recorded on the HDD 15 is reproduced based on the playlist information recorded on the DVD 23 attached to the disk drive 16. That is, it appears to the user as if the AV data recorded on the DVD 23 is being reproduced.

  When creating a list display screen, a thumbnail image is created from a predetermined frame image of each AV data, and the thumbnail image and information such as a file name and title are displayed in association with each other on the list display screen. Is preferable because it can easily determine the contents of AV data.

  When thumbnail images are used for list display, for example, the title control unit 17 reads playlist information from the DVD 23 mounted on the disk drive 16, and based on the playlist information, a predetermined frame image of the corresponding AV data is read out. A thumbnail image that is read out from the HDD 15 and reduced to a predetermined size is created. Then, based on the playlist information, a list display screen is created in which the attribute information of the AV data such as the file name and title of the AV data and the created thumbnail image are displayed in association with each other.

  As a frame image read when creating a thumbnail image, for example, a frame image corresponding to the first frame of AV data, or a frame image after a predetermined time such as 5 seconds or 10 seconds after the beginning of AV data is used. it can.

  Further, the thumbnail image has been described as being created when the playlist information is read from the DVD 23 during reproduction. However, the present invention is not limited to this. For example, when recording AV data in the HDD 15, a thumbnail image is created in advance. You may make it record on HDD15. Further, the recording is not limited to this and may be recorded on the DVD 23.

  When thumbnail images are used for the list display screen, a predetermined frame image of AV data based on the path described in the playlist information is read from the HDD 15, a thumbnail image is created from the read frame image, A list display screen is displayed in which the created thumbnail images and titles are displayed in association with each other. When the user operates the operation unit 19 to select a thumbnail image corresponding to the target AV data from the list-displayed AV data, the thumbnail image corresponding to the selected thumbnail image is selected based on the path described in the playlist information. AV data to be read is read from the HDD 15, decoded and reproduced.

  When a thumbnail image is recorded in advance on the HDD 15 or the DVD 23, the file name and path of the thumbnail image are described in the playlist information. Then, when the list display screen is created, the thumbnail images are read from the HDD 15 or the DVD 23 based on the thumbnail image paths described in the playlist information.

  In the recording / reproducing apparatus 1 according to the first embodiment of the present invention, playlist information can be generated using a plurality of DVDs, and AV data can be recorded in the HDD 15. For example, as shown in FIG. 3, a case where a user A prepares a DVD 23 and a user B prepares a DVD 23 'to record AV data will be considered. When the user A records the AV data “XXX.mpg”, “YYY.mpg” and “AAA.mpg” using the DVD 23, the AV data “XXX.mpg”, “YYY.mpg” and “ Playlist information relating to “AAA.mpg” is recorded. When user B records AV data “ZZZ.mpg” and “BBB.mpg” using DVD 23 ′, playlist information relating to AV data “ZZZ.mpg” and “BBB.mpg” is recorded on DVD 23 ′. Is recorded. In the HDD 15, AV data “XXX.mpg”, “YYY.mpg”, “ZZZ.mpg”, “AAA.mpg”, and “BBB.mpg” are recorded.

  At the time of reproduction, for example, when the user A attaches the DVD 23 to the disk drive 16, the playlist information recorded on the DVD 23 is read, and the AV data “XXX.mpg”, “YYY” is read based on the read playlist information. .Mpg ”and“ AAA.mpg ”are displayed as a list of titles and thumbnail images. When the user operates the operation unit 19 to select target AV data, for example, a title or thumbnail image of “YYY.mpg”, the AV data “YYY.mpg” is output from the HDD 15 based on the path described in the playlist information. Are read out, decoded and reproduced.

  Further, for example, when the user B loads the DVD 23 ′ into the disk drive 16, the playlist information recorded on the DVD 23 ′ is read out as described above, and “ZZZ.mpg” is read based on the read out playlist information. ”And“ BBB.mpg ”and thumbnail images are displayed in a list. When the user operates the operation unit 19 to select target AV data, for example, a title or thumbnail image of “ZZZ.mpg”, the AV data “ZZZ.mpg” is output from the HDD 15 based on the path described in the playlist information. Are read out, decoded and reproduced.

  As described above, by attaching the DVD used for recording AV data to the disc drive 16, the file name, title information, and thumbnail image of the AV data described in the playlist information recorded on the DVD are recorded. Are displayed as a list, so that it appears to the user as if the AV data displayed as a list is recorded in 23. Therefore, the user can actually reproduce the AV data recorded on the HDD 15 using the DVD. That is, the user can reproduce the AV data recorded on the HDD 15 without being aware of the HDD 15 in the same manner as reproducing the AV data recorded on the DVD.

  The playlist information recorded on the DVD 23 has a very small data size compared to the AV data, so that it can be recorded on the DVD 23 at a high speed. When the capacity of the HDD 15 is large, a large number of AV data playlist information can be recorded on one DVD. That is, a large number of AV data can be virtually recorded on one DVD.

  Furthermore, since the AV data recorded on the HDD 15 is classified and managed by the DVD 23 used at the time of recording, for example, by using a DVD for each user, it is easy to restrict viewing on the AV data. Can be done.

  Note that the recording / reproducing apparatus 1 can reproduce not only the DVD 23 on which playlist information is recorded but also a DVD on which AV data is recorded in the DVD-VIDEO format. For example, the disk drive 16 supplies the CPU 20 with information indicating the directory and extension of the data recorded on the DVD. Since DVD-VIDEO has a predetermined directory and file structure, the CPU 20 determines whether the DVD loaded in the disk drive 16 is a DVD in which playlist information is recorded based on the supplied information. It is determined whether the DVD is in VIDEO format.

  If the data recorded on the DVD loaded in the disk drive 16 is a DVD-VIDEO format directory or file structure, the CPU 20 determines that this DVD is a DVD-VIDEO format DVD and performs playback. .

  A case of erasing AV data recorded on the HDD 15 will be described. When the AV data recorded on the HDD 15 is directly deleted, the AV data recorded on the HDD 15 and the playlist information recorded on the DVD 23 cannot be matched. Therefore, when erasing the AV data recorded on the HDD 15, for example, by deleting the playlist information recorded on the DVD 23, the AV data associated with the playlist information recorded on the HDD 15 can be erased. Thus, erasing AV data directly from the HDD 15 may be prohibited.

  For example, the title control unit 17 reads playlist information from the DVD 23 mounted on the disk drive 16 and creates a list display screen. When the user operates the operation unit 19, the AV data to be deleted is selected from the titles and thumbnail images of the AV data displayed on the list display screen. The title control unit 17 generates erasure information for erasing information related to predetermined AV data from the playlist information, and supplies it to the disk drive 16.

  Based on the erasure information supplied from the title control unit 17, the disk drive 16 uses the playlist information recorded on the DVD 23 attached to the disk drive 16 and the playlist information on the DVD 23 corresponding to the selected AV data. Delete the corresponding item. When the title control unit 17 confirms that the corresponding item has been deleted from the playlist information, the corresponding AV data recorded in the HDD 15 is deleted.

  For example, when DVD-R or DVD + R is used as the DVD 23, it is physically impossible to erase the recorded AV data. Therefore, when erasing the AV data recorded in the HDD 15, it is preferable to newly create playlist information reflecting the erasure of the AV data and write it to the next border or session. The recording / reproducing apparatus 1 always uses the latest playlist information.

  For example, when DVD-RW, DVD + RW, or DVD-RAM is used as the DVD 23, the playlist information itself is overwritten, or only the changed part of the playlist information is overwritten, so that the corresponding information is obtained from the playlist information. Items can be deleted.

  If the AV data recorded on the HDD 15 is erased for some reason such as a failure of the recording / reproducing device, even if the DVD 23 on which the playlist information corresponding to the erased AV data is recorded is mounted, AV data cannot be reproduced. In such a case, for example, it may be displayed that the AV data is not found.

  For example, the DVD 23 on which playlist information is recorded may be mounted on a disc drive mounted on a PC (Personal Computer) so that the contents of the playlist information and thumbnail images can be confirmed.

  FIG. 4 is a block diagram showing an exemplary configuration for realizing the functions of the recording / reproducing apparatus 1 shown in FIG. The CPU 20 is connected to the bus 33, and the CPU 20 controls each unit of the recording / reproducing apparatus 1 using the RAM 31 as a work memory when executing the program according to a program stored in advance in the ROM 30 or the HDD 15.

  The tuner 12 is connected to the bus 33, and the tuner 12 demodulates the radio wave of the digital television broadcast received by the antenna 11, extracts the signal of the selected channel, and extracts AV data and EPG information from the extracted signal. The extracted AV data and EPG information are supplied to the CPU 20 via the bus 33.

  The CPU 20 generates title information and playlist information based on the EPG information. The HDD 15 and the disk drive 16 are connected to the bus 33, and the CPU 20 records the generated title information on the HDD 15 via the bus 33. Further, the CPU 20 supplies the generated playlist information to the disk drive 16 via the bus 33 and records the playlist information on the DVD 23 attached to the disk drive 16. Further, the CPU 20 performs predetermined signal processing on the AV data and records it in the HDD 15. Note that predetermined signal processing may be performed on AV data using dedicated hardware.

  At the time of reproduction, when the DVD 23 in which the playlist information is recorded is mounted on the disk drive 16 and a search is instructed in accordance with the operation of the operation unit 19, the CPU 20 starts from the DVD 23 mounted on the disk drive 16 via the bus 33. The playlist information is read out, and a screen displaying a list of information such as AV data titles and file names is created based on the playlist information. The created list display screen is output to the outside via the input / output interface 32 connected to the bus 33 and displayed on a display device or the like connected to the outside.

  When the target AV data is selected from the AV data displayed in a list by the user's operation on the operation unit 19, the CPU 20 reads the AV data from the HDD 15 based on the playlist information, and reads the read AV data. Decode. Note that AV data may be decoded using dedicated hardware. The decoded AV data is output to the outside via the input / output interface 32 and reproduced on the display device.

  Next, a modification of the first embodiment of the present invention will be described. In the modification of the first embodiment, playlist information is generated based on AV data recorded on the HDD 15, and the generated playlist information is recorded on the DVD 23.

  The title control unit 17 creates a list display screen for the titles and contents of AV data recorded in the HDD 15 based on the title information recorded in the HDD 15. When the user operates the operation unit 19 from the AV data displayed on the created list display screen, AV data for newly generating playlist information is selected. The title management unit 13 generates playlist information related to the selected AV data based on the selection of the AV data by the user, and supplies the playlist information to the disc drive 16. The disc drive 16 records the playlist information supplied from the title management unit 13 on the DVD 23.

  In this way, a DVD for reproducing the target AV data can be created from the AV data recorded on the HDD 15. In addition, when playlist information is newly generated and recorded on the DVD, for example, when the DVD on which the playlist information is recorded is lost or the playlist information cannot be read due to damage or the like. Etc. You can also use it as a library.

  The playlist information may be recorded not only on the DVD 23 but also on the HDD 15 when the AV data is recorded on the HDD 15. By doing so, it is possible to generate playlist information to be recorded on the DVD 23 based on the playlist information recorded on the HDD 15.

  Next, a second embodiment of the present invention will be described. In the second embodiment of the present invention, as shown in FIG. 5, a recording / reproducing apparatus 1 and 1 ′ are provided with a communication interface, and the recording / reproducing apparatuses 1 and 1 ′ are connected via a network 2 and connected via the network 2. Communication of playlist information and AV data is performed between the recording / reproducing apparatus 1 and the recording / reproducing apparatus 1 ′.

  The network 2 is a LAN (Local Area Network), for example, and uses TCP / IP (Transmission Control Protocol / Internet Protocol) as a protocol to perform transmission / reception between connected recording / reproducing apparatuses. When a plurality of recording / reproducing devices are connected via the TCP / IP network 2, for example, one recording / reproducing device of the recording / reproducing devices connected via the network 2 serves as a server. Then, the recording / reproducing apparatus as a server can identify each recording / reproducing apparatus on the network 2, and has a unique IP address with respect to a MAC (Media Access Control) address set in each recording / reproducing apparatus. Are assigned respectively. For example, a new server may be provided on the network 2 and an IP address may be assigned to each recording / reproducing device.

  FIG. 6 shows an example of playlist information applicable to the second embodiment of the present invention. For example, an IP address assigned to each recording / reproducing device can be used as the device ID. The file name and path are described by, for example, URL (Uniform Resource Locator). When thumbnail images are created in advance and recorded on the HDD 15 or the DVD 23, the file names and paths of the thumbnail images corresponding to the respective AV data are described by URLs. In the example of FIG. 6, playlist information created by two different recording / reproducing apparatuses 1 and 1 ′ is recorded on one DVD 23.

  FIG. 7 shows an example of the configuration of a recording / reproducing apparatus 1 'applicable to the second embodiment of the present invention. In addition, about the part which is common in the above-mentioned FIG. 1, the same code | symbol is attached | subjected and description is abbreviate | omitted. The communication interface 40 controls communication with an external video device connected via the network 2 according to a predetermined protocol. The communication interface 40 performs communication control when data supplied from the CPU 20 is transmitted to the network 2. Further, it receives data supplied via the network 2 and supplies the received data to the CPU 20. In FIG. 4, the communication interface 40 is connected to the bus 33.

  When the DVD 23 is loaded into the disk drive 16 of the recording / reproducing apparatus 1 ′, the disk drive 16 reads playlist information from the DVD 23 and supplies it to the CPU 20. The CPU 20 collates the IP address that is the device ID described in the playlist information supplied from the disk drive 16 with the IP address of the recording / playback apparatus connected to the network 2. If there is a recording / playback apparatus having a matching IP address on the network 2 as a result of the collation, the title control unit 17 displays a list display screen such as the title and file name of AV data corresponding to the IP address based on the playlist information. And displayed on the display device 3 connected to the outside via the output processing unit 24.

  When creating a list display screen using thumbnail images, a predetermined frame image is received from a recording / playback apparatus on the network 2 via the communication interface 40, and the title control unit 17 thins the frame image to a predetermined size and reduces the frame image. Create a thumbnail image, and create a list display screen in which the created thumbnail images are arranged.

  When the title or thumbnail image of the target AV data is selected from the AV data displayed in a list by the user's operation on the operation unit 19, the CPU 20 determines based on the URL of the AV data described in the playlist information. The corresponding AV data is requested to the external recording / reproducing apparatus (for example, the recording / reproducing apparatus 1) via the communication interface 40. The recording / reproducing apparatus 1 reads AV data in response to a request and transmits it via the network 2. The recording / reproducing apparatus 1 ′ receives the AV data transmitted from the recording / reproducing apparatus 1 and supplies it to the decoder 18. The decoder 18 decodes the received AV data and outputs it to the outside via the output processing unit 24.

  Here, a method for reproducing AV data recorded in one recording / reproducing apparatus from one recording / reproducing apparatus connected to the network 2 will be described more specifically. For example, consider a case where the DVD 23 on which the playlist information shown in FIG. 6 is recorded is mounted on the recording / reproducing apparatus 1 ′ and AV data recorded on the recording / reproducing apparatus 1 is reproduced. At this time, the IP address “192.168.11.1” is assigned to the recording / reproducing apparatus 1, and the IP address “192.168.11.2” is assigned to the recording / reproducing apparatus 1 ′. And

  The playlist information recorded on the DVD 23 includes the device ID “192.168.11.1” of the recording / reproducing apparatus 1 and the AV data “XXX.mpg”, “YYY. mpg ”,“ ZZZ.mpg ”, and the correspondence between the path and the device ID“ 192.168.11.2 ”of the recording / reproducing apparatus 1 ′ and the AV data“ AAA. The correspondence relationship with the paths “mpg”, “BBB.mpg”, and “CCC.mpg” is described. When the user inserts the DVD 23 into the disk drive 16 of the recording / reproducing apparatus 1 ′, the disk drive 16 reads playlist information from the DVD 23 and supplies it to the CPU 20.

  The CPU 20 collates the device ID (IP address) described in the playlist information with the device ID (IP address) of the recording / playback apparatus connected to the network 2. As a result of the collation, for example, the IP address “192.168.11.1” of the recording / reproducing apparatus 1 and the IP address “192.168.11.2” of the recording / reproducing apparatus 1 ′ are described in the playlist information. The title control unit 17 of the recording / reproducing apparatus 1 ′ matches the AV data “XXX.mpg” and “YYY.mpg” corresponding to the IP address “192.168.11.1” based on the playlist information. , “ZZZ.mpg”, and a list of information such as titles and file names of AV data “AAA.mpg”, “BBB.mpg”, “CCC.mpg” corresponding to the IP address “192.168.11.2” A display screen is created and displayed on the display device 3 via the output processing unit 24.

  When creating a list display screen using thumbnail images, AV data “XXX.mpg”, “XXX” from the recording / playback apparatus 1 via the communication interface 40 based on the URL of AV data described in the playlist information. YYY.mpg ”and“ ZZZ.mpg ”predetermined frame images are received, and the title control unit 17 creates thumbnail images from the frame images. Further, the title control unit 17 determines predetermined AV data “AAA.mpg”, “BBB.mpg”, and “CCC.mpg” recorded in the HDD 15 based on the URL of the AV data described in the playlist information. A thumbnail image is created from the frame image. Then, a list display screen in which the created thumbnail images and titles are displayed in association with each other is created and displayed on the display device 3 via the output processing unit 24.

  When the user operates the operation unit 19 and selects the target AV data, for example, the title or thumbnail image of “ZZZ.mpg” from the AV data displayed as a list, the CPU 20 selects the AV described in the playlist information. Based on the URL of the data “ZZZ.mpg”, the AV data is requested to the recording / reproducing apparatus 1 via the communication interface 40. The recording / reproducing apparatus 1 reads the AV data “ZZZ.mpg” in response to the request and transmits it via the network 2. The recording / reproducing apparatus 1 ′ receives AV data transmitted from the recording / reproducing apparatus 1. The received AV data is supplied to the decoder 18, where the AV data is decoded by the decoder 18 and reproduced by the display device 3 via the output processing unit 24.

  In this way, by connecting a plurality of recording / reproducing devices to each other, AV data recorded in one recording / reproducing device connected to the network can be reproduced from the other recording / reproducing device, and the user can Can reproduce AV data without being conscious of which recording / reproducing apparatus records the AV data.

  In the above description, the case where two recording / reproducing apparatuses are connected via a network has been described. However, the present invention is not limited to this. For example, two or more recording / reproducing apparatuses may be connected via a network.

  Further, when AV data is recorded in the second embodiment of the present invention, the AV data is recorded on an HDD mounted on a recording / reproducing apparatus mounted with a DVD. For example, in the example of FIG. 5, when the DVD 23 is loaded in the recording / reproducing apparatus 1 ', AV data is recorded in the HDD mounted in the recording / reproducing apparatus 1'.

  The present invention is not limited to the first embodiment, the modification of the first embodiment, and the second embodiment of the present invention described above, and various modifications and variations can be made without departing from the scope of the present invention. Application is possible. In the above description, the case of recording a digital television broadcast has been described. However, the present invention is not limited to this. For example, the present invention can be applied to the case of recording an analog television broadcast. Further, for example, a VTR (Video Tape Recorder) using a magnetic tape as a recording medium can be connected to the recording / reproducing apparatus 1 so that AV data recorded on the magnetic tape can be recorded on the HDD 15.

  In the above description, a recordable DVD has been described as an example of a detachable recording medium. However, this is not limited to this example. For example, other types of optical disks such as CD-R (Compact Disc-Recordable) and CD-RW (Compact Disc-ReWritable), magnetic disks, non-volatile memories, and removable HDDs may be used as removable recording media. Good.

FIG. 4 is an exemplary functional block diagram for explaining the operation of the recording / reproducing apparatus 1 according to the first embodiment of the present invention. It is a basic diagram which shows an example of play list information. It is a basic diagram for demonstrating the case where several AV data are recorded on HDD using several DVD. It is a block diagram which shows an example of a structure for implement | achieving the function of the recording / reproducing apparatus by the 1st Embodiment of this invention. It is a basic diagram which shows the usage example of the recording / reproducing apparatus by the 2nd Embodiment of this invention. It is a basic diagram which shows an example of the play list information applicable to the 2nd Embodiment of this invention. It is a functional block diagram which shows the structure of an example of the recording / reproducing apparatus by the 2nd Embodiment of this invention. It is a block diagram which shows the structure of an example of the conventional recording / reproducing apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Recording / reproducing apparatus 2 Network 11 Antenna 12 Tuner 13 Title management part 14 Recording signal processing part 15 HDD
16 Disk drive 17 Title control unit 18 Decoder 19 Operation unit 20 CPU
21 Input terminal 22 Output terminal 23 Recordable DVD
40 Communication interface

Claims (10)

A first recording medium for accumulatively recording the input video signal;
A playlist information generating unit that generates playlist information in which the video signal is associated with information indicating an address at which the video signal is recorded on the first recording medium;
A recording unit for recording data on a detachable second recording medium,
A recording apparatus, wherein the playlist information generated by the playlist information generation unit is recorded on the removable second recording medium. The recording apparatus according to claim 1,
The playlist information generation unit
A recording apparatus characterized in that when recording an input video signal on the first recording medium, playlist information is generated based on the video signal. The recording apparatus according to claim 1,
The playlist information generation unit
A recording apparatus, wherein playlist information is generated based on the video signal recorded on the first recording medium. The recording apparatus according to claim 1,
The second recording medium is
A recording apparatus which is a recording medium capable of recording the video signal. The recording apparatus according to claim 1,
A recording apparatus, wherein the video signal corresponding to the playlist information recorded on the first recording medium can be erased by erasing the playlist information recorded on the second recording medium. Information indicating an address in which a video signal is stored cumulatively on a first recording medium and playlist information that associates the video signal with the information are recorded on the removable second recording medium. Recording method. A recording method for recording information indicating an address in which a video signal is stored cumulatively on a first recording medium and playlist information that associates the video signal with the removable second recording medium. A recording program which is executed by a computer program. A first recording medium for accumulatively recording the input video signal;
A playlist information generating unit that generates playlist information in which the video signal is associated with information indicating an address at which the video signal is recorded on the first recording medium;
A recording / reproducing unit capable of recording the playlist information generated by the playlist information generating unit on a removable second recording medium, and reproducing the playlist information recorded on the second recording medium;
A recording / reproducing apparatus comprising: a reproduction control unit that reproduces the video signal recorded on the first recording medium based on the playlist information reproduced from the second recording medium. The recording / reproducing apparatus according to claim 8.
According to a predetermined protocol, it further has a communication interface for communicating with an external device,
The recording / reproducing apparatus, wherein the reproduction control unit can reproduce the video signal recorded on the first recording medium based on playlist information supplied from the outside. Recording the input video signal on the first recording medium in an accumulative manner;
Playlist information generating step for generating playlist information in which the video signal is associated with information indicating an address at which the video signal is recorded on the first recording medium;
Recording the playlist information generated in the playlist information generating step on a removable second recording medium;
Replaying the playlist information recorded on the second recording medium;
And a reproduction control step of reproducing the video signal recorded on the first recording medium based on the playlist information reproduced from the second recording medium.

Images