JP4040001B2 - Recording / reproducing apparatus and information signal recording method - Google Patents

Description

  The present invention relates to a recording / reproducing apparatus and an information signal recording method for recording / reproducing a digital information signal on a recording medium.

  Conventionally, there are various recording / reproducing apparatuses for digital information signals such as audio information and video information. In the case of a digital audio signal, a typical example is an MD recorder that uses a minidisc (hereinafter referred to as MD) as a recording medium. A recording medium on which digital information is recorded / reproduced by such a recording / reproducing apparatus corresponds to a program area (main information area) in which a digital information signal as main information is recorded and a digital information signal recorded in the program area. In the case of an MD recorder, the digital audio signal recorded in the program area is managed as a track. The table area in which information related to the track is recorded is called a U-TOC (User Table Of Content) area, and address information such as a track or an empty area (recordable area) of the disc is a pointer, a start address, an end address. Managed by address.

  When editing a digital audio signal (track) recorded in the program area, only the identification information and link information in the U-TOC area are edited, and the digital audio signal (track) recorded in the program area is not edited. I am doing so. By adopting such a method, editing can be performed easily and quickly.

  In addition, in the mini disk device, in order to restore the erased track on the disk so that it can be reproduced again, the address information of each track recorded in the U-TOC area of the magneto-optical disk is stored in advance in a memory. In some cases, when music information is recorded by erasing multiple tracks, the address information of the tracks that were not overwritten is read from the memory and recorded again in the U-TOC area of the magneto-optical disk (For example, refer to Patent Document 1).

In addition, in a recording apparatus that records audio information and the like in units of programs, identification information and the like related to each song recorded on the MD in the MD recorder in order to improve operability when deleting a plurality of programs. The information is stored in the memory unit, and this identification information is displayed via the GUI in the personal computer. The user designates a plurality of songs to be erased with reference to the displayed contents through a mouse or the like, and designates the designated songs. In some cases, a selected song arrangement is generated by rearranging the numbers in descending order, and an erasing process for each selected song, that is, a rewriting process of identification information of the memory unit, is sequentially performed along the selected song arrangement ( For example, see Patent Document 2).
JP-A-8-273332 JP-A-11-110955

  However, in the conventional recording / reproducing apparatus, when editing digital information signals recorded on a recording medium, for example, when restoring processing (UNDO processing) of editing contents to undo editing represented by program erasure, the recording / reproducing is performed. When the recording medium was taken out from the apparatus, such an undo process was impossible. However, at this time, the main information of the program erased so as to be restored by the change of the identification information remains in the taken out recording medium, and if this program can be restored, the user is provided with further convenience. can do. In particular, as the capacity of recording media increases, the digital information handled has become large as represented by video information, and it may take a long time to retransmit the digital information. If a great convenience is provided, the effect is great.

  Further, in the prior art described in Patent Document 1, even when a plurality of tracks are erased when recording music information whose time length is not newly known on a disc on which music information has already been recorded, By re-recording the address information of tracks that have not been overwritten, it is possible to restore tracks that were once erased and not overwritten. However, erased tracks can be restored only by erasing. This is only before removing the disc, and cannot be restored after it has been removed.

  In the prior art described in Patent Document 2, the operability of the operation related to the erasure process when erasing a plurality of programs can be improved, but the erased program is not restored. In addition, it does not improve the operability of operations related to restoration of edited contents.

  In view of the above points, the present invention restores the edited contents of the recording information of the recording medium even after the recording medium on which the recording information has been edited, represented by program erasure, is taken out from the recording / reproducing apparatus. An object of the present invention is to provide a recording / reproducing apparatus and an information signal recording method.

  To achieve the above object, the present invention provides a main information area in which main information is recorded in units of programs, an identification information area in which identification information corresponding to each program recorded in the main information area is recorded, In a recording / reproducing apparatus capable of recording and reproducing a recording medium having a recording medium and editing a program recorded in the main information area by changing the identification information recorded in the identification information area, the editing is performed. Editing information recording means for recording difference information, which is a difference between the identification information before the change and the identification information after the change, on the recording medium, and the recording medium based on the difference information recorded on the recording medium Editing information restoring means for restoring the recorded identification information to the identification information before the change is provided.

  In this way, the recording information of the recording medium can be recorded on the basis of the difference information recorded on the recording medium even after the recording medium on which the recording information represented by program erasure has been edited is taken out from the recording / reproducing apparatus. It is possible to restore the edited contents.

  Further, for example, a recording medium having a main information area in which main information is recorded in units of programs and an identification information area in which identification information corresponding to each program recorded in the main information area is recorded and reproduced. In the recording / reproducing apparatus capable of editing the program recorded in the main information area by changing the identification information recorded in the identification information area, the identification information before the change when the editing is performed Edit information recording means for recording the difference information that is the difference between the change identification information and the changed identification information and the changed identification information in the memory, the identification information recorded in the recording medium, and the changed information recorded in the memory The identification information recorded on the recording medium is restored to the identification information before the change based on the difference information recorded in the memory when the identification information matches It may be provided and the editing information restoring means.

  In this way, the recording medium in which the recording information is typified by erasing the program is recorded / reproduced without recording information relating to the editing on the recording medium, that is, while maintaining compatibility with other recording / reproducing apparatuses. Even after being taken out from the apparatus, the recording medium can be specified based on the identification information recorded in the memory, and the edited content of the recording information of the recording medium can be restored based on the difference information.

  Further, for example, the memory is an external storage device provided externally, and having a communication means for communicating with the external storage device allows a large number of recordings without increasing the capacity of the memory built in the recording / reproducing device. Identification information and difference information regarding the medium can be recorded, and the edited contents of the recording information of many recording media can be restored.

  Further, for example, if a list of programs corresponding to identification information that can be restored by the editing information restoring means is displayed on the display device, it becomes easy for the user to check the programs to be restored.

  Further, for example, the display device is an external display device provided outside, and having a communication means for communicating with the external display device, without increasing the size of the display device mounted on the recording / reproducing device, Recoverable programs can be displayed, and it becomes even easier for the user to confirm the program to be restored.

  In addition, for example, when the program corresponding to the identification information that can be restored by the editing information restoration unit is reproduced without restoring the identification information, the program is restored by the user without restoring the program. As a result, it is possible to prevent a useless process of temporarily restoring a program that does not need to be restored for confirmation only.

  Also, for example, when new main information is recorded on the recording medium, recording is performed from a free area in the main information area. If there is no free area, a program erased by changing the identification information is recorded. If recording is performed sequentially from the area in which the previously erased program is recorded, the possibility that the erased program can be restored can be increased.

  Further, for example, in the information signal recording method of transferring the information signal to the recording / reproducing apparatus according to the present invention and recording the information signal on the recording medium to be recorded / reproduced by the recording / reproducing apparatus, before transferring the information signal, With reference to the difference information recorded by the editing information recording means of the recording / reproducing apparatus and the program recorded on the recording medium, when the program erased by the change of identification information and the information signal match, It is preferable that the identification information corresponding to the erased program is restored by the editing information restoring means of the recording / reproducing apparatus without executing the transfer of the information signal.

  In this way, the program transfer time for transferring the information signal to the recording / reproducing apparatus can be greatly reduced.

  According to the present invention, a recording medium having a main information area in which main information is recorded in units of programs and an identification information area in which identification information corresponding to each program recorded in the main information area is recorded is recorded. In the recording / reproducing apparatus capable of reproducing and editing the program recorded in the main information area by changing the identification information recorded in the identification information area, the identification before the change when the editing is performed Edit information recording means for recording difference information, which is a difference between the information and the changed identification information, on the recording medium, and identification information recorded on the recording medium based on the difference information recorded on the recording medium. Since the editing information restoring means for restoring the identification information before the change is provided, the recording medium on which the recording information represented by the program erasure is edited is taken from the recording / reproducing apparatus. Even after being, can be based on the recorded difference information on the recording medium, the restoration of edits the recorded information of the recording medium.

  In addition, according to the present invention, a recording medium having a main information area in which main information is recorded in units of programs, and an identification information area in which identification information corresponding to each program recorded in the main information area is recorded. In the recording / reproducing apparatus capable of editing the program recorded in the main information area by changing the identification information recorded in the identification information area, before the change when the editing is performed. Difference information which is a difference between the identification information of the information and the identification information after the change and the editing information recording means for recording the identification information after the change in the memory, the identification information recorded in the recording medium and the information recorded in the memory When the identification information after the change matches, the identification information recorded on the recording medium is changed to the identification information before the change based on the difference information recorded in the memory. Editing information restoring means for restoring is provided, so that information relating to editing can be edited without recording information on a recording medium, that is, while maintaining compatibility with other recording / reproducing apparatuses, Even after the performed recording medium is taken out from the recording / reproducing apparatus, the recording medium is specified based on the identification information recorded in the memory, and the edited content of the recording information of the recording medium is restored based on the difference information. can do.

  An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a block diagram showing an electrical configuration of an MD recorder (recording / reproducing apparatus) according to an embodiment of the present invention. In FIG. 1, 10 is a recording medium mini-disc (MD), 1 is an ATRAC compression circuit that compresses an input digital audio signal (main information) and converts it into a highly efficient encoded digital signal, and 2 is ATRAC compression. The digital signal from the circuit 1 is interleaved, an error correction code is added, and further converted into a digital signal to which a subcode signal is added, or a process such as error correction is performed on the digital signal read from the MD 10 A signal processing circuit 3 for performing such digital signal processing, 3 is a shock proof memory for temporarily storing a digital signal to be processed by the signal processing circuit 2 for sound skip guard, 4 is a head driver, The digital signal is converted into a signal for recording on the MD 10 by the recording magnetic head 5. A digital signal is magneto-optically recorded on the MD 10 as pit data by the magnetic head 5 and the pickup 11.

  The pickup 11 also plays a role of reading pit data recorded on the MD 10 and converting it into an electrical signal. An RF amplifier 12 converts an electrical signal output from the pickup 11 into a digital signal and generates a servo signal. The signal processing circuit 2 performs processing such as error correction on the signal output from the RF amplifier 7. Do. Reference numeral 13 denotes an ATARC decompression circuit that decompresses the signal processed by the signal processing circuit 2 and returns it to a digital signal, 14 a D / A converter that converts the digital signal processed by the ATRAC decompression circuit 13 into an analog signal, and 15 An audio adjustment and amplifier unit 16 performs audio adjustment and amplification of the analog signal from the D / A converter 14, and 16 is a speaker that reproduces the analog signal from the amplifier 15 as audio.

  Further, 9 is a feed motor that drives the pickup 11 to reciprocate between the inner and outer circumferences of the MD 10 and is controlled via the servo circuit 7 by a tracking error signal output from the RF amplifier 12. Reference numeral 8 denotes a spindle motor that rotates a disk in the MD 10, and reference numeral 6 denotes an MD control circuit (editing information recording means, editing information restoring means) that controls the entire MD recorder. The signal processing circuit 2 and the servo circuit 7 are connected to each other. Control. Reference numeral 17 denotes a memory whose use will be described later. Reference numeral 18 denotes a liquid crystal monitor that displays the operation status of the MD recorder and information read from the MD 10. Further, the MD recorder shown in FIG. 1 includes an external interface (external IF, communication means) 19, and an external storage having a large-capacity storage device such as a personal computer (PC) provided outside via the external IF 19. The device 20 can be connected.

  Next, a recordable MD disk configuration used in such an MD recorder will be described. FIG. 2 is a cross-sectional view of an essential part schematically showing a cross section of a recordable MD disc. In FIG. 2, reference numeral 10 denotes an MD, and the MD 10 includes a disk 25 and a cartridge 26. In addition, the disk 25 includes a lead-in area 21, a U-TOC area 22, a program area 23, and a lead-out area 24 from the inner periphery side. The lead-in area 21 is pre-recorded with disc information, and the U-TOC area 22 is an area for storing information (identification information) for data recorded in the program area 23. In this U-TOC area 22, recorded data addresses, title information, and the like are recorded.

  Next, the operation of the MD recorder shown in FIG. 1 using such an MD 10 as a recording medium will be described. First, when the MD 10 is inserted into the MD recorder shown in FIG. 1, information on disk insertion is sent to the MD control circuit 6, and rotation control of the disk 25 in the MD 10 is performed through the servo circuit 7 and the spindle motor 8. Further, the lead-in area 21 of the disk 25 is accessed while the pickup 11 is moved by the feed motor 9. At this time, the pickup 11 reads a disk address signal carved on the disk 25 and converts the disk address signal into address information by the RF amplifier 12. The feed motor 9 is controlled by the servo circuit 7 based on the address information, and the pickup 11 reads the information in the lead-in area 21. If it can be determined from the read information that the MD is recordable, the U-TOC information in the U-TOC area 22 is further read, and the disc information, title information, etc. are displayed on the liquid crystal monitor 18. Further, the U-TOC information read here is stored in the memory 17. The U-TOC information stored in the memory 17 may be only necessary parts such as title information and address information.

  Next, the operation during recording will be described. First, based on the U-TOC information already stored in the memory 17, a free area (recordable area) in the program area 23 is calculated, and the pickup 11 is moved to a disk address corresponding to the calculated free area. On the other hand, the digital audio signal to be recorded is sent to the ATRAC compression circuit 1 where the audio is compressed. In the case of an MD recorder, a highly efficient encoding method called ATRAC (Adaptive TRansform Acoustic Coding) is used. The compressed data compressed by the ATRAC compression circuit 1 is sent to the signal processing circuit 2 and temporarily stored in the shock proof memory 3. When the data is stored to some extent, the signal processing circuit 2 performs processing such as format conversion to a sector structure and EFM modulation (Eight to Fourteen Modulation). Then, it is converted into a signal for recording by the head driver 4 and sent to the magnetic head 5. Thereafter, the magnetic head 5 and the pickup 11 are controlled and recorded on the disk 25 of the MD 10. At the time of recording, the U-TOC information in the memory 17 is also updated according to the recorded contents. At this time, U-TOC difference information described later is also updated. After the recording of the music data is completed, the U-TOC area 22 is updated based on the U-TOC information in the memory 17 and a series of recording operations is completed.

  Next, the operation during reproduction will be described. First, based on the U-TOC information already stored in the memory 17, the disc address of the target title in the program area 23 is accessed. Then, music data is read from the position through the pickup 11 and the RF amplifier 12 and sent to the signal processing circuit 2. In the signal processing circuit 2, EFM modulation (Eight to Fourteen Modulation), format conversion to a sector structure, and the like are performed and stored in the shock proof memory 3. The stored sector structure data is sent to the ATRAC decompression circuit 13 and decompressed into digital voice data, converted into a voice analog signal by the D / A converter 14, and then sent to the speaker 16 through the voice adjustment and amplifier unit 15. And played.

  Now, the format of the main area of the U-TOC area 22 will be described. The U-TOC area 22 has an area composed of 32 sectors. Sector 0 has address information, sector 1 has title information (Kana), sector 2 has recording date and time, and sector 4 has title information (Kanji). Are recorded, and the other sectors 3 and 5 to 31 are extended areas (reserved).

  First, sector 0 will be described with reference to FIG. Sector 0 is 2352 bytes of 4 bytes x 588 slots, and is the manufacturer of the device that last edited the header part, cluster H (cluster H) and cluster L (cluster L) indicating the predetermined address position, and U-TOC area. Manufacturer code (Maker code) and model code (Model code), First TNO and Last TNO indicating the first and last program numbers, Used Sectors, Disc Serial No, Disc ID, P-DFA (Pointer for Defective Area) indicating the start position of the slot that stores information on the position of the defect that occurred on the disk, P-EMPTY (Pointer for Empty slot) indicating the slot usage status, recordable Slot start position P-FRA (pointer for FReely Area), P-TNO1 to P-TNO255 indicating the start position of the slot corresponding to each program number, Start corresponding to the P-TNO address and End address are recorded in order. In addition, Track mode and Link-P are recorded together with Start address and End address. Track mode contains the information of the corresponding program, and Link-P indicates the jump destination of the remote address. This Link-P allows you to manage the program recorded in a jump, and you can easily divide songs and connect multiple songs.

  Next, as shown in FIG. 4, the sector 1 is recorded with the title of the entire disk and the alphabet or kana information of the title of each program. By referring to the Disc name or Track name of each program in P-TNA1 to P-TNA255 and using Link-P, it is possible to support long Disc names or Track names. Further, as shown in FIG. 5, the recording date and time (Disc data and time) of each program is recorded in sector 2, and in sector 4, the title of the entire disc and the title of each program are recorded as shown in FIG. Kanji information is recorded. As with Sector 1, P-TNA1 to P-TNA255 refer to the Disc name or Track name of each program and use Link-P to support long Disc names or Track names. Yes.

  As described above, each program information is managed by the U-TOC information recorded in the U-TOC area 22, and editing processes such as program deletion, song order change, title change, song division, and multiple song connection are performed. When performing the editing, only the U-TOC information in the U-TOC area 22 is edited, thereby enabling a quick editing operation.

  The U-TOC information recorded in the U-TOC area 22 when editing processing will be described below. First, when editing processing is performed, the U-TOC information already stored in the memory 17 is changed. That is, until the MD 10 is taken out, the U-TOC information only needs to refer to the memory 17. At this time, only necessary U-TOC information is stored in the memory 17. Furthermore, if the U-TOC information before editing is stored in another area of the memory 17, the edited content can be restored, that is, the state before editing can be restored (UNDO processing). The U-TOC information before editing need only be the difference (difference information) from the edited U-TOC information. For example, in the case of erasing a program, P-EMPTY, P-FRA and P of sector 0 Only the difference between -TNO, per sector P-EMPTY and P-TNA, per sector 2 P-EMPTY and P-TRD, and per sector 4 P-EMPTY and P-TNA. In this way, even an erased area can be restored. In addition, when a part of the erased program area is overwritten and recorded, the program part cannot be restored (UNDO processing). Therefore, it is determined that the undo process cannot be performed, and the U-TOC difference information before editing is deleted.

  When the MD 10 is taken out from the MD recorder, the U-TOC area 22 is updated using the U-TOC information in the memory 17. At this time, U-TOC difference information in another area of the memory 17 is also written in the U-TOC area 22 (first embodiment). In this U-TOC difference information, a sector that is not used in the U-TOC area 22 is defined and written as a differential information dedicated area. In this way, when the MD 10 is inserted again, if the U-TOC difference information in the differential information dedicated area is also taken into the memory 17 together with the U-TOC information, the MD is once taken out and then re-inserted. Even if this is the case, it is possible to understand the part that can be processed by UNDO and provide the user with a better editing function.

  However, the above-described method (first embodiment) cannot be compatible with the above-described MD recorder or the like. Of course, if a new flag or the like for identifying the MD recorded and edited by the MD recorder adopting the above-described method is newly provided in the sector 0 or the like, the compatibility can be easily obtained. 2nd Embodiment which is a method is shown. In the following method, the U-TOC stored in the memory of the recording / reproducing apparatus is used for the MD edited by the recording / reproducing apparatus such as the MD recorder corresponding to the present invention while maintaining compatibility with the existing recording / reproducing apparatus. It enables undo processing within the range of difference information.

  In the MD recorder shown in FIG. 1, when the digital information recorded in the MD 10 is edited, the memory 17 manages U-TOC information and U-TOC difference information as described above. Here, the memory 17 is a memory holding type memory. When the MD 10 is taken out, the U-TOC area 22 of the disk 25 in the MD 10 is updated with the U-TOC information. At this time, the U-TOC difference information is not written. In addition, U-TOC difference information is stored in the memory 17, and Disc Serial No, DISC-ID, First TNO, Last TNO, P-EMPTY, P-FRA, P-TNO, etc., and a change unit, etc. Some Start address and End address are also stored in the memory 17. When the MD 10 is inserted again, the Maker code and Model code recorded in the sector 0 of the U-TOC area 22 of the inserted MD 10 disc 25 are referred to. These indicate the manufacturer and model of the device that last edited the U-TOC area 22, and by referring to these, it is possible to determine whether the MD has been edited by the MD recorder.

  If the MD is not edited by the MD recorder, the undo process of the MD is not allowed. On the other hand, if the MD is edited by the MD recorder, the Disc Serial No, DISC-ID, First TNO, Last TNO, P-EMPTY, P-FRA, P-TNO, etc. of the sector 0 in the U-TOC area 22 are stored. The information is compared with the information in the memory 17 and further compared with the Start address and End address stored in the memory 17. When they match, for the first time, it is determined that the inserted MD 10 and the target MD of the U-TOC difference information stored in the memory 17 match, and it is determined that undo processing is possible. By this method, while maintaining compatibility with other recording / playback apparatuses such as the existing MD recorder, the MD edited with the recording / playback apparatus corresponding to the present invention can be obtained even after the MD is taken out. Undo processing within the range of U-TOC difference information in the memory of the recording / playback device is possible.

  Further, the above-described second embodiment can be applied as follows. If the device has an external IF 19 and can be connected to a large-capacity storage device such as a personal computer as in the MD recorder shown in FIG. U-TOC information and U-TOC difference information can be saved in the connected mass storage device. Thereby, it is possible to have U-TOC difference information for many recording media without increasing the capacity of the memory 17.

  This content will be described below as a third embodiment. As shown in FIG. 1, in a system in which an external storage device 20 and an MD recorder are connected via an external IF 19, all U-TOC difference information is stored in the external storage device 20. When the MD 10 is inserted into the MD recorder, the U-TOC information recorded in the MD 10 is taken out and stored in the external storage device 20. At this time, the U-TOC information may also be stored in the memory 17. After that, based on the U-TOC information in the external storage device 20 or the memory 17 and the U-TOC difference information in the external storage device 20, the MD is authenticated as described above, and is the MD capable of UNDO processing? Judge whether. If the inserted MD 10 and the target MD of the U-TOC difference information stored in the external storage device 20 or the memory 17 can be regarded as the same, the stored MD 10 is stored in the external storage device 20 or the memory 17. It is possible to perform UNDO processing within the range of U-TOC difference information. In this way, since the storage capacity of the external storage device 20 is large, it is possible to have U-TOC difference information for many MDs, and undo processing can be performed for many MDs even after the MDs are taken out. Can be done.

  If the external storage device 20 has a large display (display device) like a personal computer, a list of programs that have been erased and can be restored by UNDO processing is displayed on this display. Convenient. At this time, program information such as program playback time and recording date and time is displayed together with the program title. These can be performed by storing sector 1, sector 2, sector 4, etc. corresponding to the U-TOC difference information of sector 0. It should be noted that the list of programs that can be restored by UNDO processing can be displayed by the external storage device 20 such as a personal computer if the MD recorder has a display that can display such a list. Even if it is not connected, it is possible.

  In addition, when a recording medium such as an MD has been stored for a long period of time, even if a list of program information that has been erased and can be deleted once is displayed in a list, the user must fully specify the program contents. It is also possible that it is impossible to determine whether or not to restore because it cannot be understood. In such a case, it is convenient to provide a means for reproducing the program without restoring the program in the UNDO process. In the following, a method for reproducing a program without restoring the program in the UNDO process will be described.

  First, P-TNO indicating the start position of the reproduction target slot in the U-TOC difference information is referred to. Next, the Start address, End address, Link-P, and Track mode corresponding to the P-TNO in the U-TOC information are referred to, and the program is reproduced according to these information. In this way, in order to confirm the contents of the erased program, the program can be reproduced and confirmed without restoring the program by the UNDO process. Therefore, it is not necessary to perform a useless process of restoring a program that the user does not really want to restore only for confirmation. Note that the method of reproducing the erased program without restoring it is possible even when the external storage device 20 is not connected.

  Also, once a program has been erased and overwritten, it will not be possible to restore the program using the UNDO process, but in the future, the capacity of the disk will tend to increase, and in some cases the disk will not be used at full capacity. Since there is a possibility that it will increase, first, if there is no free space from the free space, priority is given to the region with the program with the oldest deletion date in the main information region with the erased program that can be restored. If overwriting is performed, the effectiveness of the present invention is further increased.

  This content will be described below as a fourth embodiment. First, at the time of program erasure, the recording date and time recorded in the sector 2 of the U-TOC information is updated to the date and time of erasure. When recording a program, first, an empty area is searched. The empty area is calculated by searching for a place other than the area where the erased program can be restored from the recordable area. If there is a free area, the program is recorded in the free area. On the other hand, if there is no free area, the recording date and time of sector 2 corresponding to the area where the program that can be restored and erased is recorded is referred to. The date and time when the program was deleted is recorded as the recording date and time of sector 2. Then, the recording date / time of each program is compared, and overwriting is performed with priority given to an area with a program with an older recording date / time.

  However, if recording and erasing are continued by this method, the program recording area tends to be divided into a plurality of slots. Therefore, it is preferable to let the user select whether to use this method. In addition, since a recording / reproducing apparatus not equipped with a timer cannot record the date and time of program erasure described above, the erased order is stored in a separate area, and an area with an old program based on this order is stored. It is also possible to overwrite and record with priority.

  Further, the following application is possible if the recording / reproducing apparatus is provided with the external IF 19 and can be connected to a large-capacity storage device such as a personal computer like the MD recorder shown in FIG. If a recording / reproducing apparatus such as an MD recorder is connected to an external storage device, a program can be transferred between them. At this time, if there is an erased program that is the same program that can be restored, the transfer can be completed by changing only the U-TOC information without transferring the program. The advantage of such a method is large in a program of a large size such as digital video information.

  This content will be described below as a fifth embodiment. The MD recorder shown in FIG. 1 is connected to a personal computer which is an external storage device 20 via an external IF 19. In the case of MD, since copying is prohibited, only the program is transferred between the MD recorder and the personal computer. First, when the MD recorder and the personal computer are connected by USB, the MD recorder is authenticated by an application on the personal computer side, and thereafter, the program can be transferred between the personal computer and the MD recorder for the first time. The U-TOC information of the MD10 inserted in the MD recorder is stored in the memory 17 or the personal computer side. When transferring a program from a personal computer to an MD recorder, the MD recorder is first searched for an erased program that can be restored by UNDO processing. In this case, candidates are selected by referring and comparing the Track Mode of the U-TOC information, and a part of the program is compared to confirm whether they are the same program. If there is the same program that can be restored, update the U-TOC information and restore the program. At the same time, the PC application processes the same program in the PC as if it were transferred. Further, the user may be allowed to select whether or not to use this method. This is because if the user wants to erase all the programs in the MD and newly record the program from the inner circumference side, the user may not want to use this method.

  In the above description, the MD recorder has been described as an example. However, the present invention is not limited to the MD recorder but can be applied to other recording / reproducing apparatuses. For example, a recording / reproducing apparatus using a recording medium such as an optical disk typified by a DVD (digital video disk), a magnetic tape, an optical tape, and a semiconductor memory can be used. In the description of FIG. 1, the MD recorder and the external storage device (PC or the like) have been described as an example of a system in which the recording / reproducing device and the external recording device are connected. However, as another example, an HDD that is a mass storage device. A DVD recorder or the like with a built-in (hard disk drive) can be used as an external storage device.

  Further, the present invention is not limited to the above-described embodiment, and the configuration of each part can be appropriately changed and implemented without departing from the spirit of the present invention.

  According to the present invention, a recording medium having a main information area in which main information is recorded in units of programs and an identification information area in which identification information corresponding to each program recorded in the main information area is recorded is recorded. In the recording / reproducing apparatus capable of reproducing and editing the program recorded in the main information area by changing the identification information recorded in the identification information area, the identification before the change when the editing is performed Edit information recording means for recording difference information, which is a difference between the information and the changed identification information, on the recording medium, and identification information recorded on the recording medium based on the difference information recorded on the recording medium. Since the editing information restoring means for restoring the identification information before the change is provided, the recording medium after the recording information has been edited is taken out from the recording / reproducing apparatus. It is based on the recorded difference information, the restoration of edits the recorded information of the recording medium represented by a program erase things.

  In addition, according to the present invention, a recording medium having a main information area in which main information is recorded in units of programs, and an identification information area in which identification information corresponding to each program recorded in the main information area is recorded. In the recording / reproducing apparatus capable of editing the program recorded in the main information area by changing the identification information recorded in the identification information area, before the change when the editing is performed. Difference information which is a difference between the identification information of the information and the identification information after the change and the editing information recording means for recording the identification information after the change in the memory, the identification information recorded in the recording medium and the information recorded in the memory When the identification information after the change matches, the identification information recorded on the recording medium is changed to the identification information before the change based on the difference information recorded in the memory. Since the editing information restoring means for restoring is provided, the information recording information to be recorded is edited without recording the information relating to the editing on the recording medium, that is, while maintaining compatibility with other recording / reproducing apparatuses. Even after the recording medium is taken out from the recording / reproducing apparatus, the recording medium is identified based on the identification information recorded in the memory, and the edited information of the recording information of the recording medium represented by program erasure based on the difference information Can be restored.

These are block diagrams which show the electrical structure of MD recorder of embodiment of this invention. These are principal part sectional drawings which show typically the disk section of recordable MD. These are the schematics for demonstrating the data structure of the sector 0 of the U-TOC area of MD. These are the schematics for demonstrating the data structure of the sector 1 of the U-TOC area of MD. These are the schematics for demonstrating the data structure of the sector 2 of the U-TOC area of MD. These are the schematic diagrams for demonstrating the data structure of the sector 4 of the U-TOC area of MD.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ATRAC compression circuit 2 Signal processing circuit 3 Shock proof memory 4 Head driver 5 Magnetic head 6 MD control circuit (editing information recording means, editing information restoration means)
7 Servo Circuit 8 Spindle Motor 9 Feed Motor 10 Mini Disc (MD, Recording Medium)
DESCRIPTION OF SYMBOLS 11 Pickup 12 RF amplifier 13 ATRAC expansion circuit 14 D / A converter 15 Audio | voice adjustment and amplifier part 16 Speaker 17 Memory 18 Liquid crystal monitor (display apparatus)
19 External interface (external IF, communication means)
20 External storage device 21 Lead-in area 22 U-TOC area (identification information area)
23 Program area (main information area)
24 Lead-out area 25 Disc 26 Cartridge

Claims (3)

Recording and reproducing a recording medium having a main information area in which main information is recorded in units of programs and an identification information area in which identification information corresponding to each program recorded in the main information area is recorded;
In the recording / reproducing apparatus capable of editing the program recorded in the main information area by changing the identification information recorded in the identification information area,
Edit information recording means for recording difference information, which is a difference between the identification information before the change and the identification information after the change when the editing is performed, on the recording medium;
Editing information restoring means for restoring the identification information recorded on the recording medium to the identification information before the change based on the difference information recorded on the recording medium ;
A recording / reproducing apparatus characterized in that a program corresponding to identification information that can be restored by the editing information restoration means is reproduced without restoring the identification information . Recording and reproducing a recording medium having a main information area in which main information is recorded in units of programs and an identification information area in which identification information corresponding to each program recorded in the main information area is recorded;
In the recording / reproducing apparatus capable of editing the program recorded in the main information area by changing the identification information recorded in the identification information area,
Difference information that is a difference between the identification information before the change and the identification information after the change when the edit is performed, and the edit information recording means for recording the identification information after the change in a memory;
When the identification information recorded on the recording medium matches the changed identification information recorded on the memory, the identification recorded on the recording medium based on the difference information recorded on the memory Editing information restoring means for restoring the information to the identification information before the change, provided,
A recording / reproducing apparatus characterized in that a program corresponding to identification information that can be restored by the editing information restoration means is reproduced without restoring the identification information . An information signal recording method for transferring an information signal to the recording / reproducing apparatus according to claim 1 or 2 and recording the information signal on a recording medium to be recorded / reproduced by the recording / reproducing apparatus.
  Before transferring the information signal, refer to the difference information recorded by the editing information recording means of the recording / reproducing apparatus and the program recorded on the recording medium,
  When the program erased by the change of identification information matches the information signal, the information signal is not transferred, and the identification information corresponding to the erased program is transferred to the editing information restoring means of the recording / reproducing apparatus An information signal recording method comprising:

Images