JP2004318923A - Device and method for recording/reproduction - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a DVD+RW recorder wherein a redundant operation time is reduced. <P>SOLUTION: A DVD recorder 10 is provided with a system controller 26 for controlling recording/reproduction of a DVD+RW disk. A system controller 26 inhibits the reproduction of menu data recorded in the DVD+RW after recorded contents are edited or new contents are recorded. The reproduction of the menu data is inhibited until at least new menu data are recorded. Further, in the DVD recorder 10, during disk ejection, menu data reflecting title contents currently recorded in a recording medium are generated, and the generated menu data and management data are recorded in a disk. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a recording / reproducing apparatus and method for recording data on a recording medium such as a DVD.
[0002]
[Prior art]
As a device for recording television broadcasts and recording captured images, DVD recorders using recordable DVDs as media instead of video tape recorders have begun to spread. The recordable DVD is a recordable optical disc having a diameter of 12 cm and a thickness of 1.2 mm and a capacity of 4.7 Gbytes on one side.
[0003]
There are five types of recordable DVDs, DVD-R, DVD-RW, DVD + RW, DVD + R, and DVD-RAM, including both write-once (one-time recordable type) and rewritable (multiple-time rewritable types). The format has been proposed. These formats are described in "DVD Forum" which is a private standard organization of DVD (for example, see Non-Patent Document 1), and "DVD + RW Alliance" which is a private standard organization different from the DVD Forum (for example, see Non-Patent Document 2). Ref.).
[0004]
DVD-R and DVD + R are write-once optical disks that can be written only once. DVD-R is an optical disk according to the format proposed by the DVD Forum, and DVD + R is an optical disk according to the format proposed by the DVD + RW Alliance.
[0005]
DVD-RW and DVD + RW are optical discs that are rewritable a plurality of times and have a format compatibility with a read-only DVD (DVD-VIDEO) defined by the “DVD Forum”. DVD-RW and DVD + RW can be reproduced even by a conventional reproduction-only DVD player. DVD-RW is an optical disk according to the format proposed by the DVD Forum, and DVD + RW is an optical disk according to the format proposed by the DVD + RW Alliance.
[0006]
The DVD-RAM is a rewritable optical disk in a format housed in a cartridge, has low compatibility with DVD-VIDEO, and has a format significantly different from other DVDs. DVD-RAM is an optical disk proposed by the DVD Forum.
[0007]
In the DVD-VIDEO standard proposed by the DVD Forum, a unit called "title" is defined as a data unit. The “title” defined in this standard is a concept indicating a unit of reproduction of one content such as one movie or one music album. The DVD-VIDEO standard states that up to 99 titles can be recorded on one DVD disc.
[0008]
[Non-patent document 1]
Internet <URL: http: // www. dvdforum. gr. jp / ＞
[Non-patent document 2]
Internet <URL: http: // www. dvdrw. com / >>
[0009]
[Problems to be solved by the invention]
By the way, DVD + RW employs a format that is compatible with the DVD-VIDEO standard. However, in DVD + RW, a process called finalization is performed in order to maintain a data structure compatible with the DVD-VIDEO standard. Finalization is a process for recording necessary management data other than content data and a file system on a disc so that the DVD can be played back by a playback-only DVD player.
[0010]
In DVD + RW, it is specified that a finalizing process is always performed after a recording or updating process such as recording of a title, deletion of a title, or change of a title name occurs.
[0011]
Further, in the finalizing process on the DVD + RW, not only the management data but also the title menu described in the VMG defined by the DVD-Video standard is updated.
[0012]
However, the operation of generating the video data of the title menu and recording the video data is very difficult and consumes a lot of processing time. Further, during the process, even if the user presses the recording button, for example, the user cannot immediately react and perform recording. Therefore, for example, when it is desired to continuously record two titles in real time, the recording of the next title cannot be started immediately after the recording of the previous title is completed, and the first title of the second title cannot be recorded. There was a situation where recording was not possible.
[0013]
The present invention has been proposed in view of such circumstances. For example, when data is recorded on a recording medium such as a DVD + RW that adopts a format that specifies recording menu data, An object of the present invention is to provide a recording / reproducing apparatus and a method that reduce redundant operation time.
[0014]
[Means for Solving the Problems]
The recording / reproducing apparatus according to the present invention specifies recording of content data, management data for managing the content data, and menu data for operating a menu screen which is a user interface screen for reproducing the content data. A recording / reproducing apparatus for recording / reproducing data in a state where a recording medium adopting the above-mentioned format is detachably attached, and in which the recording medium is attached, the input / output content data corresponding to the above-mentioned format. Encoding a data stream, recording the encoded data stream on the recording medium, reproducing a data stream corresponding to the format from the recording medium, decoding the reproduced data stream to generate content data, and generating Output content data Recording / reproducing means, and control means for controlling the recording / reproducing means and recording / reproducing the management data and the menu data on / from the recording medium, wherein the control means edits recorded content data. Or, after the recording of new content data, the reproduction of the menu data recorded on the recording medium is prohibited until the recording of new menu data, and when the recording medium is ejected, the operation is stopped, or the user Generates menu data reflecting the content of the content data currently recorded on the recording medium, and records the generated menu data and management data on the recording medium.
[0015]
Further, the recording / reproducing method according to the present invention records content data, management data for managing the content data, and menu data for operating a menu screen which is a user interface screen for reproducing the content data. Is a recording / reproducing method for recording and reproducing data on a removable recording medium adopting a format that defines the following. After editing recorded content data or recording new content data, Until the menu data is recorded, the reproduction of the menu data recorded on the recording medium is prohibited, and when the recording medium is ejected, the operation is stopped, or when instructed by a user, the current recording is performed on the recording medium. Menu data that reflects the content of the content data The Deta and management data recorded on the recording medium.
[0016]
In the above-described recording / reproducing apparatus and method according to the present invention, after editing recorded content data or recording new content data, reproduction of menu data recorded on the recording medium is prohibited. The prohibition of the reproduction of the menu data is performed at least until new menu data is recorded. Further, in the recording / reproducing apparatus and method according to the present invention, when the recording medium is ejected, when the operation is stopped, or when instructed by a user, menu data reflecting the content of the content data currently recorded on the recording medium is displayed. The generated menu data and management data are recorded on the recording medium. That is, in the recording / reproducing apparatus and method according to the present invention, the menu data and the management data are not collectively recorded every time the content data is recorded or updated, but the menu data and the management data are updated collectively later. It is.
[0017]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, a DVD recorder to which the present invention is applied will be described as an embodiment of the present invention.
[0018]
FIG. 1 shows a block diagram of a DVD recorder 10 according to an embodiment of the present invention.
[0019]
A DVD recorder 10 according to an embodiment of the present invention records an AV signal (video / audio signal) reproduced from a television broadcast or a recording tape on a DVD disk, and reproduces and outputs an AV signal from the DVD disk. Device.
[0020]
In the DVD recorder 10, DVD-VIDEO, DVD-R, DVD-RW proposed by "DVD Forum" which is a private standard organization of DVD, and DVD + R proposed by "DVD + RW Alliance" which is a private standard organization of DVD. And a multi-type disc recorder capable of recording and reproducing to and from DVD + RW. Hereinafter, these DVD disks that can be recorded and reproduced by the DVD recorder 10 are collectively referred to as a DVD disk 1.
[0021]
The internal configuration of the DVD recorder 10 will be described with reference to FIG.
[0022]
The DVD recorder 10 includes a video input terminal (Vin), an audio input terminal (Ain), a video output terminal (Vout), an audio output terminal (Aout), a digital interface terminal (DVin), and a video A / D converter. 11, a video D / A converter 12, an audio A / D converter 13, and an audio D / A converter 14.
[0023]
The video input terminal (Vin) is connected to a tuner, a set-top box, a video signal reproducing device, and the like via a video cable. From these devices, a video signal which is a video signal of a predetermined video format such as NTSC or PAL is input to the video input terminal (Vin). The video signal input to the video input terminal (Vin) is converted from an analog signal to a digital signal by the video A / D converter 11 and input into the device. The video output terminal (Vout) is connected to a television monitor, a video signal recording device, and the like via a video cable. The video output terminal (Vout) outputs a video signal which is a video signal of a predetermined video format such as NTSC or PAL to these devices. The video signal output from the video output terminal (Vout) is converted from a digital signal to an analog signal by the video D / A converter 12 and output outside the device.
[0024]
The audio input terminal (Ain) is connected to a tuner, a set-top box, an audio signal reproducing device, and the like via an audio cable. The audio input terminal (Ain) receives, for example, an audio signal, which is an audio / music signal in a predetermined format, from these devices. The audio signal input to the audio input terminal (Ain) is converted from an analog signal to a digital signal by the audio A / D converter 13 and input into the device. The audio output terminal (Aout) is connected to an audio device, an audio signal recording device, and the like via an audio cable. The audio output terminal (Aout) outputs an audio signal that is, for example, an audio music signal in a predetermined format to these devices. The audio signal output from the audio output terminal (Vout) is converted from a digital signal to an analog signal by the audio D / A converter 14 and output outside the device.
[0025]
The digital interface terminal (DVin) is connected to a DV player that reproduces AV data (video data and audio data) from a DV tape cassette via, for example, an IEEE1394 terminal or an interface cable for digital data transmission such as USB. AV data (DV data) in DV format reproduced by a DV player from a DV tape cassette is input to a digital interface terminal (DVin).
[0026]
The DVD recorder 10 includes an NTSC / PAL decoder 15, a DV decoder 16, an MPEG encoder 17, an MPEG decoder 18, a graphic synthesis circuit 19, and an NTSC / PAL encoder 20.
[0027]
The NTSC / PAL decoder 15 converts a video signal of NTSC or PAL format or the like input from the video input terminal (Vin) and digitized by the video A / D converter 11 into an ITU-R BT. 601 format video signal.
[0028]
The DV decoder 16 converts the DV data input from the digital interface terminal (DVin) into ITU-R BT. 601 format video signals and a predetermined format audio signal.
[0029]
MPEG encoder 17 is based on ITU-R BT. A video signal of a 601 format and an audio signal of a predetermined format digitized by the audio A / D converter 13 are input, and they are compression-encoded by the MPEG-2 system and are subjected to an MPEG-2 AV data stream (MPEG). -2 stream).
[0030]
The MPEG decoder 18 receives the MPEG-2 stream, decompresses and decodes the stream, and generates an ITU-R BT. A 601 format video signal and a predetermined format audio signal are generated.
[0031]
The graphic synthesizing circuit 19 is based on ITU-R BT. A process of synthesizing an externally input on-screen display image (OSD image) on a display screen of a 601 format video signal is performed.
[0032]
The NTSC / PAL encoder 20 outputs the ITU-R BT. 601 format video signals are converted to NTSC or PAL format video signals and output from a video output terminal (Vout).
[0033]
In addition, the DVD recorder 10 includes a switching circuit 21 that switches a transmission path of a video signal and an audio signal.
[0034]
The switching circuit 21 switches the transmission path between recording and reproduction, and switches the transmission path between DV data and other signals during recording.
[0035]
Specifically, the switching circuit 21 switches paths as follows. That is, when recording a signal other than the DV data, the switching circuit 21 supplies the video signal output from the NTSC / PAL decoder 15 to the MPEG encoder 17 and the graphic synthesizing circuit 19, and outputs the video signal from the audio A / D converter 13. The transmission path is switched so that the output audio signal is supplied to the MPEG encoder 17 and the audio D / A converter 14. When recording DV data, the switching circuit 21 supplies the video signal output from the DV decoder 16 to the MPEG encoder 17 and the graphic synthesizing circuit 19, and converts the audio signal output from the DV decoder 16 into the MPEG encoder The transmission path is switched so as to supply the signal to the D / A converter 17 and the audio D / A converter 14. When reproducing, the switching circuit 21 supplies the video signal output from the MPEG decoder 18 to the graphic synthesizing circuit 19 and supplies the audio signal output from the MPEG decoder 18 to the audio D / A converter 14. Switch the transmission path so that
[0036]
The DVD recorder 10 includes a buffer circuit 22 and a drive device 23.
[0037]
The buffer circuit 22 is a memory for temporarily storing an MPEG-2 stream and a control data stream that are recorded and reproduced on and from the DVD disk 1.
The drive device 23 is a device on which the DVD disk 1 is mounted and which physically accesses the mounted DVD disk 1 to record and reproduce data. Note that the control data stream is a data stream including information information specified in the format of the DVD disc 1 and the like.
[0038]
The DVD recorder 10 includes a VBI slice circuit 24.
[0039]
The VBI slice circuit 24 is a circuit that detects information information (VBI information) included in a blanking period of a video signal from a video signal input from a video input terminal (Vin).
[0040]
The DVD recorder 10 includes an input device 25 and a system controller 26.
[0041]
The input device 25 is, for example, an input device such as an infrared remote controller, and is a device for inputting information for operating the DVD recorder 10 by a user. The information input from the input device 25 is supplied to the system controller 26.
[0042]
The system controller 26 is a control block including a microcomputer or the like that performs setting and control for each circuit described above.
[0043]
Specific processing performed by the system controller 26 includes, for example, the following.
[0044]
For example, the system controller 26 reads a control data stream from the buffer circuit 22 and performs access control, display control, and the like on the DVD disk 1 based on the control data. The system controller 26 records or generates control information on the recorded data at the start or end of data recording, and records the control information on the DVD disc 1 as a data stream according to a format. The system controller 26 generates header information of the MPEG-2 stream and analyzes the header information.
[0045]
Further, the system controller 26 generates an OSD image such as a menu screen, supplies the generated OSD image to the graphic synthesizing circuit 19, and displays the OSD image on a television monitor. Further, the system controller 26 appropriately updates the OSD image according to the input information from the input device 25, and displays the changed OSD image on a television monitor. The system controller 26 performs various controls according to the input from the input device 25, and performs predetermined control determined based on the currently displayed OSD image and the currently input information.
[0046]
Also, the system controller 26 supplies the VBI information detected from the input video signal from the VBI slice circuit 24 and supplies necessary information to the MPEG encoder 17 among a plurality of pieces of information indicated in the VBI information. Then, the header information of the MPEG-2 stream is encoded. During reproduction, the system controller 26 generates VBI information based on necessary information among information detected from the header information of the MPEG-2 stream, supplies the generated VBI information to the NTSC / PAL encoder 20, and outputs the VBI information. The video signal is encoded at a predetermined blanking position.
[0047]
The recording operation of the DVD recorder 10 having the above configuration is as follows.
[0048]
During recording, a video signal and an audio signal are externally input to the DVD recorder 10. The input video signal is supplied to the ITU-R BT. 601 format video signal. ITU-R BT. The video signal of the 601 format is supplied to the MPEG encoder 17 via the switching circuit 21, and is encoded together with the audio signal into an MPEG-2 stream. The buffer circuit 22 temporarily stores the MPEG-2 stream encoded by the MPEG encoder 17 and also temporarily stores the control data stream generated by the system controller 26. Then, in the DVD recorder 10, the drive device 23 reads the MPEG-2 stream and the control data stream from the buffer circuit 22 in the order according to the format of the DVD disc 1, and records the read data on the DVD disc 1.
[0049]
Further, the DVD recorder 10 also performs the following operation so that the user can perform EE monitoring of the video and audio being recorded in real time.
[0050]
The NTSC / PAL decoder 15 or the DV decoder 16 uses the ITU-R BT. The video signal converted into the 601 format is also supplied to the graphic synthesizing circuit 19 via the switching circuit 21. The video signal supplied to the graphic composition circuit 19 is combined with the OSD image by the system controller 26 when the OSD image is output, and is supplied to the NTSC / PAL encoder 20 when the OSD image is not output. Is done. The ITU-R BT. Supplied to the NTSC / PAL encoder 20. The 601 format video signal is converted to an NTSC or PAL format video signal, converted to an analog signal, and output to the outside. The input audio signal is converted to an analog signal via the switching circuit 21 and then output to the outside.
[0051]
The operation of the DVD recorder 10 during reproduction is as follows.
[0052]
At the time of reproduction, the drive device 23 reads the MPEG-2 stream and the control data stream from the DVD disk 1 and stores them in the buffer circuit 22. The MPEG-2 stream stored in the buffer circuit 22 is read by the MPEG decoder 18, and the control data stream is read by the system controller 26. The read MPEG-2 stream is processed by the MPEG decoder 18 according to ITU-R BT. It is decoded into a 601 format video signal and audio signal. The decoded audio signal is converted to an analog signal via the switching circuit 21 and output to the outside. The decoded ITU-R BT. The 601 format video signal is supplied to the graphic synthesizing circuit 19 via the switching circuit 21. The video signal supplied to the graphic composition circuit 19 is combined with the OSD image by the system controller 26 when the OSD image is output, and is supplied to the NTSC / PAL encoder 20 when the OSD image is not output. Is done. The ITU-R BT. Supplied to the NTSC / PAL encoder 20. The 601 format video signal is converted to an NTSC or PAL format video signal, converted to an analog signal, and output to the outside. In addition, the system controller 26 performs, for example, control of the read position of the disk, various display controls, and the like in accordance with the read control data stream.
[0053]
Next, the format of the DVD + RW disc to be recorded and reproduced by the DVD recorder 10 will be described.
[0054]
FIG. 2 shows recording positions of files and the like when content data is recorded on a DVD + RW disc.
[0055]
As shown in FIG. 2, the recording area 30 of the DVD + RW disc has a first FS area 31, a VRMI area 32, a VMG area 33, a VTS area 34, and a second FOS area 35 from the inner circumference side. Are formed.
[0056]
A UDF (universal disk format) file system 41 is recorded in the first FS area 31 and the second FS area 35. The UDF file system 41 is information for managing all files recorded in the recording area, and describes information such as a start position and a size of each file, a file name, and a recording date and time. The first FS area 31 is formed on the innermost circumference of the disc, and the second FS area 35 is formed on the outer circumference.
[0057]
The VRMI areas 32 (32-1, 32-2) are formed on the outer peripheral side (32-1) of the first FS area 31 and on the inner peripheral side (32-2) of the second FS area 35. I have. The VRMI area 32 is not a file defined by the DVD-Video standard, but is a VRMI. IFO file 42 and its backup file VRMI. The BUP file 54 is recorded. VRMI. IFO file 42 and VRMI. In the BUP file 54, management information on titles and the like is recorded. Specifically, the position of entity data of each title recorded in the VTS area 34, the recording date and time of each title, the title of the title, the disc name, and the like are described.
[0058]
The VMG area 33 is formed on the outer peripheral side of the VRMI area 32-1. In the VMG area 33, a VMG (Video Manager) defined by the DVD-VIDEO standard is recorded. The VMG stores information such as the recording address of each VTS recorded in the VTS area 34, the number of VTSs, and the like, and menu data (MPEG-PEG) for displaying and controlling a menu screen which is a user interface screen for reproducing a title. 2 data streams and control data).
[0059]
VMG is specifically VMGI. IFO file 43, VMGM_VOBS file 44, VMGI. It is composed of a BUP file 45. The VMGM_VOBS file 44 describes the actual data of the menu data (such as an MPEG data stream). VMGI. The IFO file 43 describes management data for reproducing menu data and controlling the menu screen. VMGI. The BUP file 45 contains the VMGI. This is a backup file of the IFO file 43.
[0060]
The VTS area 34 is formed on the outer peripheral side of the VMG area 33. In the VTS area 32, one to three VTSs (Video Title Sets) defined by the DVD-Video standard are recorded. In the case of a DVD + RW disc, the VTS is a file set composed of a management data file and an entity data file. In the DVD + RW disc, one to three VTSs are formed in the VTS area 34 according to the video attribute of each title. For example, if all the titles have the same video attribute, one VTS is formed. If titles having three different video attributes coexist on one disc, the number of VTSs becomes three.
[0061]
Each VTSI, as shown in FIG. 3 and FIG. IFO file 51-n, VTSTT_VOBS # n file 52-n, and VTSI # n. BUP53-n. Here, “n” is an integer from 1 to 3 indicating the VTS number. VTSI # n. The IFO file 51-n is a file containing the management information of the VTS. VTSI # n. The BUP file 53-n has the VTSI # n. This is a backup file of the IFO file 51-n. The VTSTT_VOBS # n file 52-n is a file containing the actual data of the VTS, that is, the MPEG-2 data stream.
[0062]
In the case of a DVD + RW disc, as shown in FIG. 3 and FIG. IFO files 51-1 to VTSI # 3. Each file of the IFO file 51-3 is recorded at the head of the VTS area 34. Further, the recording of the VTSTT_VOBS # 1 file is started from a predetermined fixed address in the VTS area 34.
[0063]
Further, behind the VTS area 34, the VRMI. The VRMI. The BUP file 54 is recorded.
[0064]
Next, the processing of the DVD recorder 10 from the mounting of a DVD + RW disc having the above-described format until the disc is ejected will be described with reference to FIGS.
[0065]
FIG. 5A is a diagram showing recording information of the DVD + RW before the recording and editing of the content data are performed after the DVD + RW disc is mounted. FIG. 5B is a diagram showing information stored in the internal memory of the system controller 26 after the DVD + RW disc is loaded and before recording and editing of content data are performed. FIG. 6A is a diagram showing recording information of DVD + RW after recording and editing of content data. FIG. 6B is a diagram illustrating information stored in an internal memory of the system controller 26 after recording and editing of content data. FIG. 7A is a diagram showing recorded information of a DVD + RW when a disc is ejected. FIG. 7B is a diagram showing information stored in the internal memory of the system controller 26 when the disc is ejected.
[0066]
First, when the DVD + RW disc is loaded, the system controller 26 reads out each management data relating to the content data recorded on the DVD + RW disc as shown in FIG. 5A and stores it in the internal memory. Specifically, as shown in FIG. 5B, the system controller 26 stores the VRMI. IFO file 42, VMGI. IFO file 43 and VTSs. The IFO file group 51 (VTSI # 1.IFO file 51-1 to VTSI # 3.IFO file 51-3) is read and stored in the internal memory.
[0067]
The system controller 26 controls the reproduction of the DVD + RW disc based on the read management data until the management data is updated or the content data is recorded and updated.
[0068]
Subsequently, when update of management data or recording and updating of content data occurs, that is, when processing such as additional recording of a new title, deletion of a recorded title, or change of a title name occurs, the system controller 26 As shown in FIG. 6B, the management data (VRMI.IFO file 42, VMGI.IFO file 43, and VTSs.IFO file group 51) stored in the internal memory is updated in accordance with the processing. Do.
[0069]
At this time, the system controller 26 updates the management data (VRMI.IFO file 42, VMGI.IFO file 43, and VTSs.IFO file group 51) on the disk, as shown in FIG. Absent. Further, recording of backup files (VMGI.BUP file 45, VTSs.BUP file group 53, and VRMI.BUP file 54) of the management data is not performed. Further, the VMGM_VOBS file 44 on the disc on which the actual data of the menu screen is recorded is not updated.
[0070]
However, when the VMGM_VOBS file 44 on the disk is not updated, the VMGI.VOBS file held in the internal memory is not updated. The consistency with the IFO file 43 is not maintained. Therefore, thereafter, the system controller 26 performs control so as not to reproduce the VMGM_VOBS file 44. That is, thereafter, for example, even when the user controls the display of the title menu or when the title menu is automatically displayed upon completion of the title reproduction, the control is performed so that the menu screen is not displayed. I do. For example, the VMGI. The content of the descriptor “Entry PGC for Title Menu of VMGM_PGC # 1” in the IFO file 43 is rewritten as LinkSins {RSM} which is a command to return to the original title reproduction, or the reproduction is stopped immediately. It is rewritten to a command of meaning, such as Exit.
[0071]
If the VMGM_VOBS file 44 is not reproduced in this way, the user cannot select and reproduce the title using the screen operation. Therefore, the system controller 26 determines whether the VRMI. With reference to the IFO file 42 and the like, a reproduction menu screen is separately created and displayed using OSD images.
[0072]
Subsequently, when performing the ejection control of the disk, the system controller 26 first writes the VMGM_VOBS 44 as the menu data immediately before the ejection as shown in FIG. 7A, and then stores the menu data in the internal memory. The contents of each management data stored in the VRMI. IFO file 42, VMGI. IFO file 43, VTSs. IFO file group 51, VTSs. BUP file 53 and VRMI. Write to the BUP file 54. At this time, the VMGI. If the descriptor of the IFO file is rewritten so as not to display the menu, the modification is also made. Further, the system controller 26 generates menu data, and writes the VMGM_VOBS file 44 corresponding to the newly generated menu data to the disc.
[0073]
When the writing of these files is completed, the contents of the internal memory are erased and the disc is ejected, as shown in FIG.
[0074]
As described above, when the DVD + RW disc is ejected, the DVD recorder 10 generates menu data reflecting the contents of the currently recorded title, and records the generated menu data and management data on the DVD + RW disc.
For this reason, in the DVD recorder 10, menu data and management data are not recorded at the end of recording or updating of content data, so that redundant operation time such as not being able to immediately respond to an operation input from a user is reduced. be able to. Therefore, the DVD recorder 10 can immediately perform the next recording when performing continuous recording of content data.
[0075]
In this embodiment, the case where the content is recorded on the DVD + RW has been described. However, the present invention can be applied to a DVD-RW. Although the management data is written to the disk when the disk is ejected, for example, the management data may be written when the power is turned off or in sleep mode, or when the user issues a write command.
[0076]
In the above embodiment, not only the menu data but also all management data is recorded when the disc is ejected. However, a part of the management data (for example, the VTSI.IFO file group 51 and the VRMI.IFO file 42) is recorded. ) May be written to the disc when the recording of the title is completed.
[0077]
【The invention's effect】
In the recording and reproducing apparatus and method according to the present invention, when the recording medium is ejected, when the operation is stopped, or when instructed by a user, menu data reflecting the content of the content data currently recorded on the recording medium is generated. Then, the generated menu data and management data are recorded on the recording medium.
[0078]
Therefore, in the recording / reproducing apparatus and method according to the present invention, recording of menu data and management data is not performed at the end of recording or updating of content data. Operation time can be reduced. Therefore, according to the present invention, the next recording can be immediately performed when performing continuous recording of content data.
[Brief description of the drawings]
FIG. 1 is a block diagram of a DVD recorder according to an embodiment of the present invention.
FIG. 2 is a diagram for explaining a format of a DVD + RW disc.
FIG. 3 is a diagram for describing a format of a VTS area of a DVD + RW disc.
FIG. 4 is a diagram for describing a write start position of entity data on a DVD + RW disc.
FIG. 5 is a view showing files recorded on a DVD + RW disc before recording and editing of content data after the disc is mounted, and files in an internal memory.
FIG. 6 is a diagram showing files recorded on a DVD + RW disc after recording and editing of content data, and files in an internal memory.
FIG. 7 is a diagram showing files recorded on a DVD + RW disc when the disc is ejected, and files in an internal memory.
[Explanation of symbols]
1 DVD disk, 10 DVD recorder, 15 NTSC / PAL decoder, 16 DV decoder, 17 MPEG encoder, 18 MPEG decoder, 19 graphic synthesis circuit, 20 NTSC / PAL encoder, 21 switching circuit, 22 buffer circuit, 23 drive circuit, 24 VBI slice circuit, 25 input device, 26 system controller

Claims (4)

A recording medium adopting a format that defines recording of content data, management data for managing the content data, and menu data for operating a menu screen that is a user interface screen for reproducing the content data is used. In a recording / reproducing apparatus which can be attached and detached and records and reproduces data in a state where the recording medium is attached,
Encoding the input content data into a data stream corresponding to the format, recording the encoded data stream on the recording medium, and reproducing the data stream corresponding to the format from the recording medium, and reproducing the reproduced data stream. Recording / reproducing means for decoding the content data to generate the content data and outputting the generated content data;
And controlling the recording / reproducing means, and controlling means for recording / reproducing the management data and the menu data with respect to the recording medium,
The control means includes:
After editing the recorded content data or recording new content data, until the recording of new menu data, prohibit the reproduction of menu data recorded on the recording medium,
When the recording medium is ejected, when the operation is stopped, or when instructed by a user, menu data reflecting the contents of the content data currently recorded on the recording medium is generated, and the generated menu data and management data are recorded in the recording medium. A recording / reproducing apparatus for recording on a medium. The control means includes:
A second menu screen different from the menu screen based on the menu data recorded on the recording medium is generated, and the content data recorded on the recording medium based on information input according to the second menu screen The recording / reproducing apparatus according to claim 1, wherein the recording / reproducing apparatus reproduces the information. Removable recording that adopts a format that specifies recording of content data, management data for managing the content data, and menu data for operating a menu screen that is a user interface screen for reproducing the content data. In a recording and reproducing method for recording and reproducing data on a medium,
After editing the recorded content data or recording new content data, until the recording of new menu data, prohibit the reproduction of menu data recorded on the recording medium,
When the recording medium is ejected, when the operation is stopped, or when instructed by a user, menu data reflecting the contents of the content data currently recorded on the recording medium is generated, and the generated menu data and management data are recorded in the recording medium. A recording / reproducing method characterized by recording on a medium. A second menu screen different from the menu screen based on the menu data recorded on the recording medium is generated, and the content data recorded on the recording medium based on information input according to the second menu screen 4. The recording / reproducing method according to claim 3, wherein:

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