JP3732117B2 - Information recording / reproducing device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an information recording / reproducing apparatus represented by a minidisc recording / reproducing apparatus.
[0002]
[Prior art]
Here, as a conventional information recording / reproducing apparatus, a mini-disc recording / reproducing apparatus (hereinafter referred to as an MD apparatus) will be described as an example. An MD device is a digital audio device that uses a mini-disc (hereinafter referred to as MD) as a recording medium and records and reproduces musical sounds and voices.
[0003]
The recordable area of the MD includes a program area in which recording data such as musical sounds and voices are written, management information such as a recording position of the recording data in the program area and a reproduction order thereof, and media additional information (disc Name) and a series of recorded data (hereinafter referred to as tracks), a user TOC area (hereinafter referred to as a UTOC [User Table Of Contents] area) in which unique track additional information (track name) and the like are written. Separated.
[0004]
In the above-mentioned UTOC area, a plurality of types of information are independently stored in units of sectors. In the MD apparatus, sectors 0 to 4 are used. Sector 0 stores the recording status of the track. Sector 1 stores media additional information (disk name) and track additional information (track name) described in ASCII code. Sector 2 stores the recording date and time of the track. Sector 3 is not used in the recordable MD, but the prerecord MD stores the MD barcode and the ISRC [International Standard Recording Code] of each track. Sector 4 stores media additional information (disk name) and track additional information (track name) described in ISO-8859-1 or shift JIS code.
[0005]
As described above, the MD apparatus can write an arbitrary disk name or track name in the UTOC area (sector 1 and sector 4) of the MD, which is very convenient for the user.
[0006]
On the other hand, in recent years, ATRAC3 [Adaptive TRansform Acoustic Coding 3] has been added as a voice compression standard (high-efficiency coding standard) used in MD devices, so that the recordable time in the normal mode is 80 minutes. In contrast to MD, in the 4 × recording mode (LP4 (66 kbps) mode), a maximum of 320 minutes can be recorded, and a large number of tracks (music etc.) can be recorded on one MD.
[0007]
In an MD in which a large number of tracks are recorded as described above, it is desirable to further improve user convenience by dividing and managing the tracks in units of a plurality of groups and assigning a group name to each group. However, as described above, according to the conventional MD standard, although there are sectors in which media additional information (disk name) and track additional information (track name) are stored in the UTOC area, a plurality of tracks on one disk are recorded. It was not the standard that went into the method of dividing into groups.
[0008]
Therefore, in order to perform the group management while avoiding inconsistency with the existing set, media additional information (disk name) to be written in the UTOC area (sector 1 or sector 4) of the MD is created in a predetermined specific format. Thus, a method for including not only the disc name but also the group name in the media additional information has been proposed. With such a method, it is possible to realize group management within the existing standard range by effectively utilizing the UTOC area, so that the influence on the existing set is minimized and the user's request is satisfied. Various music reproductions that come true are possible.
[0009]
The specific format of the media additional information created to perform the above group management consists of the basic type indicated by “TNO1-TNO2; GroupName1 // TNO3-TNO4; GroupName2 //… //”. Has the following constraints (rules).
[0010]
First, in order to specify the track constituting the group, the start track number (TONn) to be grouped and the end track number (TNOm) are connected by “-” and described as “TNOn-TNOm”. However, TNOn must be smaller than TNOm. When the number of tracks constituting a group is one, “-” is omitted and only “TNOn” is described. In addition, when describing a disk name including all groups and tracks, the constituent track of the group may be designated as “0”. However, this description must be registered at the top position.
[0011]
Next, in order to describe the group name (or disk name), “;” is added after the track number, followed by the group name (GroupName). Note that the group name is not an essential item, and only track grouping (no group name) can be performed. The group name may include “-”, “;”, “/”, and the like.
[0012]
Furthermore, in order to register a plurality of groups, each group is separated by “//” and “//” is added to the end of the last group. One group consists only of a set of tracks having consecutive track numbers, and the track numbers for each group belong to the range from the first track number to the last track number, and missing numbers are always recognized but always increased. And That is, tracks that do not belong to any group are allowed, but one track can be registered in only one group.
[0013]
On the other hand, it is also possible to perform group registration (hereinafter referred to as reservation group registration) in which no component track is designated. However, this description must be registered at the end. It is also possible to register duplicate group names in the same MD, but in this case, even the same group name is treated as a different group. Note that group registration without specifying a component track or a group name is not allowed.
[0014]
In accordance with the above restrictions (rules), the media additional information to be written in the UTOC area of MD is described as, for example, “0; ABC // 3-8; abc // 10-12; //; YOYAKU //” In MD, group management as shown in FIG. 7 is performed. That is, from the description “0; ABC”, it is recognized that the disc name of the MD is “ABC”. Further, from the description “3-8; abc”, tracks 3 to 8 are registered as one group, and the group name is recognized as “abc”. Similarly, from the following description “10-12;”, it is recognized that tracks 10 to 12 are registered as one group, and the group name is not set. Furthermore, from the description “; YOYAKU”, it is recognized that the reserved group registration without the designation of the constituent track is made, and the group name is “YOYAKU”.
[0015]
[Problems to be solved by the invention]
Here, in the case where media additional information (that is, the disc name) that does not conform to the above specific format has already been written in the UTOC area of the MD to be newly managed by the group, in consideration of user convenience, It is desirable to convert the description into the specific format while leaving the contents of the original media additional information.
[0016]
Therefore, if media additional information that does not conform to a specific format has already been written in the conventional MD device, the original part is appended with "0;" and "//" at the beginning and end respectively. Means is provided for converting the description into the specific format while retaining the contents of the media additional information. For example, if the disc name “ABC” has already been written as the media additional information, the media additional information after conversion by the above operation is “0; ABC //”, so “ABC” after MD group management. Will be recognized as the disc name.
[0017]
Certainly, according to the above conversion operation, the description can be converted into the specific format while retaining the contents of the original media additional information, so there is no need to re-enter the disk name, which is very much for the user. Easy to use.
[0018]
However, for example, when the disk name “// 3-2; ABC” has already been written as the media additional information, the media additional information after conversion by the above operation is “0; // 3-2; ABC / / " When such conversion is performed, it is recognized from the description “0;” that there is no converted disk name. In the description “3-2; ABC”, the end track number is smaller than the start track number, and therefore, it is determined that it does not comply with the restriction (rule) of the specific format.
[0019]
In this state, if the user tries to register a new group (name is not set) from track 5 to track 10 as one group, the newly created media additional information is “0; // 3-2”. ; ABC // 5-10; // ". Therefore, since a format error (3-2; ABC) originally exists in the media additional information, it is determined that the media additional information is not described in a specific format even if there is no error in the user's group registration operation. Is done. As a result, all the media additional information written in the UTOC area of the MD is recognized as a disk name, and only the unintended rewriting of the disk name is performed for the user.
[0020]
In addition, as an example in which a problem different from the above occurs, for example, when the disc name “ABC // 2-3; abc” has already been written as media additional information, the media additional information after conversion by the above operation is , “0; ABC // 2-3; abc //”. When such conversion is performed, the disc name after conversion is recognized as “ABC” from the description “0; ABC”. Also, from the description “2-3; abc”, tracks 2 to 3 are registered as one group, and the group name is recognized as “abc”. That is, in such a state, even if there is no error in the user's group registration operation, the result is not intended by the user.
[0021]
In view of the above-mentioned problems, the present invention is not intended even if the media additional information not conforming to the specific format has already been written in the sub-recording area of the recording media to be newly managed by the group. An object of the present invention is to provide an information recording / reproducing apparatus that is unlikely to cause group management.
[0022]
[Means for Solving the Problems]
In order to achieve the above object, in the information recording / reproducing apparatus according to the present invention, a main recording area in which recording data is written and , Me Deer additional information News In order to divide and manage the recording data in units of a plurality of groups, a means for reading and writing information to a recording medium having a sub-recording area to be written Memo Additional information Special When it is determined that the medium additional information is described in the specific format, the medium additional information is described in the specific format, and the medium additional information is described in the specific format. The means for recognizing that the recording medium is group-managed, and when the new group management of the recording medium on which the medium additional information not conforming to the specific format has already been written, retains the contents of the original medium additional information. And a means for converting the description into the specific format, when the description is converted into the specific format while retaining the contents of the original media additional information not complying with the specific format. The media additional information after conversion is correctly described according to the specific format. Whether or not to have ,Record The configuration is such that the determination is made before writing to the recording medium.
[0023]
The information recording / reproducing apparatus having the above configuration is configured to notify that the group management of the recording medium has failed when it is determined that the converted media additional information is not correctly described according to the specific format. It is good to.
[0024]
The information recording / reproducing apparatus having the above configuration restores the converted media additional information to the original media additional information when it is determined that the converted media additional information is not correctly described according to the specific format. It is good to have a configuration.
[0025]
In addition, the information recording / reproducing apparatus having the above configuration may be configured to discard the converted media additional information when it is determined that the converted media additional information is not correctly described according to the specific format.
[0026]
Note that the information recording / reproducing apparatus configured as described above may be configured to confirm with the user whether or not the media additional information after conversion is discarded.
[0027]
Alternatively, when it is determined that the converted media additional information is not correctly described according to the specific format, the information recording / reproducing apparatus having the above configuration adds the original media included in the converted media additional information. It is preferable to exclude the part causing the error from the description part indicating information.
[0028]
Note that the information recording / reproducing apparatus having the above configuration asks the user before or after removing the part causing the error from the description part indicating the original media additional information included in the converted media additional information. It is good to have a configuration to check.
[0029]
In addition, the information recording / reproducing apparatus having the above-described configuration is the original medium additional information not complying with the specific format in order to newly register the existing recording data written in the main recording area of the recording medium not managed by the group. When the description is converted into the specific format while the contents of the media are left, the converted media additional information is only when it is determined that the converted media additional information is correctly described according to the specific format. Is preferably written in the sub-recording area of the recording medium.
[0030]
In addition, the information recording / reproducing apparatus having the above-described configuration is used to record new recording data to be written in the main recording area of a recording medium that is not group-managed in order to newly register the new media additional information that does not follow the specific format. When the description is converted into the specific format while leaving the contents of the file, the newly recorded data is recorded only when it is determined that the converted media additional information is correctly described according to the specific format. It is preferable to write in the main recording area of the medium and write the converted medium additional information in the sub recording area of the recording medium.
[0031]
Alternatively, the information recording / reproducing apparatus configured as described above may store the original media additional information that does not conform to the specific format in order to perform reservation group registration without corresponding recording data for recording media that are not group-managed. When the description is converted to the specific format while leaving the contents, the converted media additional information is only converted if it is determined that the converted media additional information is correctly described according to the specific format. It may be configured to write in the sub-recording area of the recording medium.
[0032]
Note that the information recording / reproducing apparatus according to the present invention records data or additional information on a recording medium. Informative Means to read and write ,Record Additional media information to be written to the recording media Special Means for creating in a fixed format; means for determining whether or not the media additional information is described in the specific format; and if media additional information not conforming to the specific format has already been written, the original media addition Means for converting the description into the specific format while leaving the content of the information in the information recording / reproducing apparatus, while leaving the content of the original media additional information not complying with the specific format When converted to a specific format, it is checked whether the media additional information after conversion is correctly described according to the specific format. ,Record It can be said that the configuration is determined before writing to the recording medium.
[0033]
An information recording / reproducing apparatus according to the present invention includes a main recording area in which recording data is written. , Me Deer additional information News Means for reading / writing information to / from a recording medium having a sub-recording area to be written, and medium additional information to be written to the sub-recording area of the recording medium in order to divide and manage the recording data in units of a plurality of groups Special When it is determined that the medium additional information is described in the specific format, the medium additional information is described in the specific format, and the medium additional information is described in the specific format. The means for recognizing that the recording medium is group-managed, and when the new group management of the recording medium on which the medium additional information not conforming to the specific format has already been written, retains the contents of the original medium additional information. And a means for converting the description into the specific format, when the description is converted into the specific format while retaining the contents of the original media additional information not complying with the specific format. The original media additional information remains correctly in the converted media additional information. Dolphin whether or not the ,Record A configuration may be adopted in which the determination is performed before writing to the recording medium.
[0034]
Alternatively, the information recording / reproducing apparatus according to the present invention includes a main recording area in which recording data is written. , Me Deer additional information News In order to divide and manage the recording data in units of a plurality of groups, a means for reading and writing information to a recording medium having a sub-recording area to be written Memo Additional information Special When it is determined that the medium additional information is described in the specific format, the medium additional information is described in the specific format, and the medium additional information is described in the specific format. The means for recognizing that the recording medium is group-managed, and when the new group management of the recording medium on which the medium additional information not conforming to the specific format has already been written, retains the contents of the original medium additional information. And a means for converting the description into the specific format, in the description of the original media additional information not complying with the specific format, a specific code required for creating the specific format is Means for determining whether or not the specific code is included. Only if, leaving the contents of the original media additional information, you may be configured to convert the description in the specific format.
[0035]
DETAILED DESCRIPTION OF THE INVENTION
Here, as an information recording / reproducing apparatus according to the present invention, a mini-disc recording / reproducing apparatus will be described as an example. FIG. 1 is a block diagram showing an example of the configuration of a mini-disc recording / playback apparatus according to the present invention.
[0036]
A digital audio output from a digital audio signal source such as a compact disc reproducing device or a satellite broadcast receiving device is connected to an input terminal 2 provided in the mini-disc recording / reproducing device 1 (hereinafter referred to as MD device 1) shown in FIG. Data is serially input as an optical signal, for example. The optical signal input to the input terminal 2 is converted into an electric signal by the photoelectric element 3 and then input to the digital PLL [Phase-Locked-Loop] circuit 4.
[0037]
The digital PLL circuit 4 extracts a clock from the input digital audio data and reproduces multi-bit data corresponding to the sampling frequency and the number of quantization bits. This multi-bit data is digital data sampled at different sampling rates for each signal source (compact disc; 44.1 kHz, digital audio tape recorder; 48 kHz, satellite broadcast (A mode); 32 kHz, etc.). Therefore, the multi-bit data output from the digital PLL circuit 4 is converted by the frequency conversion circuit 5 into a sampling rate of 44.1 kHz corresponding to the minidisk standard.
[0038]
The audio compression circuit 6 compresses and encodes digital audio data input by the ATRAC [Adaptive TRansform Acoustic Coding] method, and sends the encoded digital audio data to the signal processing circuit 8 via the shock proof memory controller 7. To do.
[0039]
The shock proof memory 9 controlled by the shock proof memory controller 7 absorbs the difference between the transfer speed of the digital audio data output from the audio compression circuit 6 and the transfer speed of the digital audio data input to the signal processing circuit 8. At the same time, the interruption of the reproduction signal due to disturbance such as vibration during reproduction is interpolated to protect the digital audio data.
[0040]
The signal processing circuit 8 has functions as an encoder and a decoder. The signal processing circuit 8 encodes the input digital audio data into a serial magnetic field modulation signal and supplies it to the recording head drive circuit 10. The recording head drive circuit 10 moves the recording head 11 to a predetermined recording position on a mini disk 12 (hereinafter referred to as MD 12) and generates a magnetic field corresponding to the magnetic field modulation signal. At this time, a laser beam is irradiated from the optical pickup 13 to a predetermined recording position on the MD 12, whereby a magnetization pattern corresponding to the magnetic field is formed on the MD 12.
[0041]
On the other hand, the optical pickup 13 reproduces a serial signal corresponding to the magnetization pattern from the MD 12. The reproduced serial signal is amplified by a high frequency amplifier 14 (hereinafter referred to as an RF amplifier 14), and then decoded by a signal processing circuit 8 into digital audio data. The decoded digital audio data is sent to the audio decompression circuit 15 after the influence of disturbance is removed by the shock proof memory controller 7 and the shock proof memory 9.
[0042]
The audio decompression circuit 15 performs inverse conversion processing of compression encoding by the ATRAC method and demodulates full-bit digital audio data. The demodulated digital audio data is converted into analog audio data by a digital / analog conversion circuit 16 (hereinafter referred to as D / A conversion circuit 16), and is output to the outside from an output terminal 17.
[0043]
The serial signal amplified by the RF amplifier 14 is also input to the servo circuit 18. The servo circuit 18 sends a control signal to the driver circuit 19 according to the reproduced serial signal, and feedback-controls the rotational speed of the spindle motor 20 via the driver circuit 19. By such feedback control, the MD 12 can be rotated at a constant linear velocity.
[0044]
The servo circuit 18 also feedback-controls the rotation speed of the feed motor 21 via the driver circuit 19. By such feedback control, shift control of the optical pickup 13 with respect to the radial direction of the MD 12, that is, tracking control can be performed. Further, the servo circuit 18 also performs focusing control of the optical pickup 13 via the driver circuit 19.
[0045]
The signal processing circuit 8, the optical pickup 13, the RF amplifier 14, the servo circuit 18, the driver circuit 19, and the like are supplied with power from a power supply circuit (not shown). Such power supply operation and group management described later are performed. All operations are centrally managed by the MD control microcomputer 22 (hereinafter referred to as MD microcomputer 22). The MD microcomputer 22 is connected to an input device 23 for performing song name input, music selection operation, sound quality adjustment operation, and the like, a display device 24 for notifying (displaying) the operation state of the device, and the like. ing.
[0046]
The present invention relates to internal processing (including key fetch processing from the input device 23 and display processing to the display device 24) in the MD microcomputer 22 that is performed when the MD 12 is group-managed. Therefore, the group management operation by the MD microcomputer 22 will be described in detail below with reference to the operation flowcharts shown in FIGS.
[0047]
First, a first embodiment of the present invention will be described. FIG. 2 is an operation flowchart showing a first embodiment of the group management operation by the MD microcomputer 22. In this flowchart, an operation for newly registering an existing track written in the program area of the MD 12 that is not group-managed (hereinafter referred to as track grouping) or a new one to be written in the program area of the MD 12 is performed. This operation is performed when an operation for newly registering a track (hereinafter referred to as group recording) or an operation for registering a group having no track with the MD 12 (hereinafter referred to as reserved group registration) is performed. Shows a series of operations.
[0048]
When performing the above operations (track grouping, group recording, reserved group registration), if additional media information (disc name) that does not conform to the specific format has already been written in the UTOC area of MD12, first, step S10 Then, by adding “0;” and “//” to the beginning and end of the description part, the description is converted into a specific format while retaining the contents of the original media additional information. That is, the original disk names are grouped.
[0049]
In the subsequent step S15, it is determined whether or not the converted media additional information temporarily registered in step S10 is correctly described according to the specific format, that is, a group survey is performed.
[0050]
Here, when the disc name “ABC” has already been written as the media additional information in the UTOC area of MD12, the media additional information after the conversion in step S10 is “0; ABC //”. There is no format violation. Therefore, in the group survey in step S15, it is determined that the converted media additional information is correctly described according to the specific format. Therefore, the flow proceeds to any of the following steps S25, S30, and S35, and “ABC” is recognized as the disc name even after MD12 group management.
[0051]
When track grouping is performed, the flow proceeds from step S15 to step S25. In step S25, selection of the start track (TNOn) [step S25-1], selection of the end track (TNOm) [step S25-2], and a specific format (“0; ABC // TNOn-TNOm; //”) [Step S25-3] are sequentially performed. Note that a group name input step by the input device 23 may be inserted before the step S25-3.
[0052]
When performing group recording, the flow proceeds from step S15 to step S30. In step S30, the start track (TNOn) associated with the start of recording [Step S30-1], the end track (TNOm) associated with the end of recording [Step S30-2], and a specific format (“0; ABC // TNOn-TNOm; // ") creation [step S30-3] is performed in order. Note that a group name input step by the input device 23 may be inserted before step S30-3.
[0053]
When performing reservation group registration, the flow proceeds from step S15 to step S35. In step S35, a reservation group name (YOYAKU) input [step S35-1] and a specific format (“0; ABC //; YOYAKU //”) creation [step S35-3] are sequentially performed.
[0054]
The media additional information created in the above steps S25, S30, and S35 is written in the UTOC area of the MD 12 in the subsequent step S40, and the group management process ends. Note that the write operation to the UTOC area in step S40 may be performed one after another after the above-described group management operation, or if another group management operation is to be continued, it is performed collectively after a series of group management operations. It may be.
[0055]
On the other hand, if the disk name “// 3-2; ABC” has already been written as media additional information in the UTOC area of MD12, the media additional information after conversion in step S10 is “0; // 3-2”. ; ABC // ”, and there is a format violation in the part“ 3-2; ABC ”. Therefore, in the group survey in step S15, it is determined that the converted media additional information is not correctly described according to the specific format. Therefore, the flow proceeds to step S45.
[0056]
In step S45, the display device 24 displays a message indicating that the track grouping has failed because the original disk name is invalid. By performing such a warning display, the user can recognize that the group management operation has failed and can change the original disk name that caused the group management operation.
[0057]
In the subsequent step S50, the converted media additional information is deleted by deleting “0;” and “//” appended to the head and tail from the converted media additional information temporarily registered in step S10. The operation for returning to the medium additional information, that is, the operation for restoring the original disk name is performed, and the group management operation is completed.
[0058]
By adopting such a configuration, the media additional information registered in the MD microcomputer 22 is restored to the original content, so that even if the user ends the group management operation as it is, the disk name displayed on the display device 24 is displayed. However, there is no inconvenience that the user is unintentionally changed to something that is not intended by the user (one with “0;” and “//” added at the beginning and end). Further, there is no fear that the media additional information after conversion is erroneously written in the UTOC area of MD12.
[0059]
Next, a second embodiment of the present invention will be described. FIG. 3 is an operation flowchart showing a second embodiment of the group management operation by the MD microcomputer 22. The group management operation of this embodiment is composed of almost the same step configuration as the first embodiment (see FIG. 2), and it is determined that the converted media additional information is not correctly described according to the specific format. Further, the present invention is characterized in that a step of discarding the media additional information after conversion is added.
[0060]
Accordingly, the same steps as those in the first embodiment are denoted by the same reference numerals as those in FIG. 2, and the description thereof is omitted. In the following, steps S55 to S65 that are characteristic portions of the present embodiment are emphasized. I will explain.
[0061]
After the original disk name is restored in step S50 described above, in a subsequent step S55, an erase confirmation message such as “Can I erase the original disk name?” Is displayed on the display device 24. If it is determined by the key determination in the subsequent step S60 that an input indicating “erase OK” has been made from the input device 23, the flow proceeds to step S65, and the original disk name is determined from the converted media additional information. The description portion indicating is deleted.
[0062]
Since the media additional information (“0; //”) in which the original disk name is discarded in this way does not include any format error, the flow proceeds to one of steps S25, S30, and S35 described above. The above-described group management operations (track grouping, group recording, reserved group registration) are continuously performed.
[0063]
On the other hand, if it is determined by the key determination in step S60 that an input indicating “cannot be erased” has been made from the input device 23, the group management operation is terminated as it is.
[0064]
In this way, when it is determined that the media additional information after conversion is not correctly described according to the specific format, a step for discarding the media additional information after conversion is added, thereby eliminating the cause of failure of the group management operation. can do. Therefore, the subsequent group management operation can be continued normally.
[0065]
In addition, it is possible to prevent the user from unexpectedly destroying the original disk name by using a configuration in which the user confirms whether or not the additional media information after conversion is discarded.
[0066]
Next, a third embodiment of the present invention will be described. FIG. 4 is an operation flowchart showing a third embodiment of the group management operation by the MD microcomputer 22. The group management operation of this embodiment is composed of almost the same step configuration as the first embodiment (see FIG. 2), and it is determined that the converted media additional information is not correctly described according to the specific format. Further, the present invention is characterized in that a step of excluding the part causing the error from the description part indicating the original media additional information included in the converted media additional information is added.
[0067]
Therefore, the same steps as those in the first embodiment are denoted by the same reference numerals as those in FIG. 2, and the description thereof is omitted. In the following, steps S70 to S80 that are characteristic portions of the present embodiment are emphasized. I will explain.
[0068]
After the original disk name is restored in step S50 described above, an edit confirmation message such as “Can I partially edit the original disk name?” Is displayed on the display device 24 in the subsequent step S70. If it is determined in the subsequent key determination in step S75 that an input indicating “edit OK” has been made from the input device 23, the flow proceeds to step S80, and the error information is determined from the converted media additional information. After the offending part is removed, the edited disk names are grouped.
[0069]
In step S80 of the present embodiment, the error cause is obtained by converting “//” used for group separation into “/” in the description portion indicating the original disk name included in the converted media additional information. Is being removed. In such an editing method, the disc name “// 3-2; ABC” has already been written as media additional information, and the converted media additional information is “0; // 3-2; ABC / Even if “/”, the media additional information is edited as “0; / 3-2; ABC //”. Therefore, the new disc name after editing is recognized as “/ 3-2; ABC”. Of course, the editing method in step S80 is not limited to this, and “//” may be completely replaced with another code or deleted.
[0070]
Since the media additional information edited in this way does not include any format error, the flow proceeds to one of the above-described steps S25, S30, and S35, and each group management operation (track grouping) described above is performed. , Group recording, reservation group registration) continues.
[0071]
On the other hand, when it is determined by the key determination in step S75 that an input indicating “editing is impossible” has been made from the input device 23, the group management operation is ended as it is.
[0072]
As described above, when it is determined that the converted media additional information is not correctly described according to the specific format, the cause of the error is determined from the description portion indicating the original media additional information included in the converted media additional information. By adding a step excluding the part that became, the cause of failure of the group management operation can be eliminated. Therefore, the subsequent group management operation can be continued normally.
[0073]
In addition, by editing the additional media information after the conversion, the user can confirm whether or not it is possible to prevent the original disk name from being edited unexpectedly by the user.
[0074]
Next, a fourth embodiment of the present invention will be described. FIG. 5 is an operation flowchart showing a fourth embodiment of the group management operation by the MD microcomputer 22. The group management operation of the present embodiment has almost the same step configuration as that of the second embodiment (see FIG. 3), and whether the content of the original media additional information is correctly left in the converted media additional information. It is characterized in that a step of determining whether or not is added.
[0075]
Therefore, the same steps as those of the second embodiment are denoted by the same reference numerals as those in FIG. 3, and the description thereof is omitted. In the following, steps S5 and S20 that are characteristic portions of the present embodiment are emphasized. I will explain.
[0076]
In the group management operation of the present embodiment, if media additional information (disc name) that does not conform to a specific format has already been written in the UTOC area of the MD 12, the number of characters is first stored in the internal memory of the MD microcomputer 22 in step S5. Is done. Thereafter, as described above, grouping of disk names is performed in step S10, and group investigation is performed in step S15.
[0077]
If it is determined in step S15 that the converted media additional information is correctly described according to the specific format, the flow continues if it is the group management operation of the first to third embodiments described above. Although the process has proceeded to any one of steps S25, S30, and S35, in the present embodiment, the number of characters in the disc name included in the converted media additional information is checked in a further subsequent step S20. That is, it is determined whether or not the content of the original media additional information is correctly left in the converted media additional information.
[0078]
Here, when the disc name “ABC” has already been written as the media additional information in the UTOC area of MD12, the media additional information after the conversion in step S10 is “0; ABC //”. There is no format violation. Also, the number of characters in the disk name before and after conversion is “3”, and there is no change in the number of characters. Therefore, in the check of the number of characters in the disk name in step S20, it is determined that the content of the original media additional information is correctly left in the converted media additional information. Therefore, the flow proceeds to any of the following steps S25, S30, and S35, and “ABC” is recognized as the disc name even after MD12 group management.
[0079]
On the other hand, if the disc name “ABC // 2-3; abc” has already been written as media additional information in the UTOC area of MD12, the media additional information after conversion in step S10 is “0; ABC // 2”. -3; abc // "and there is no format violation. However, while the number of characters in the disc name before conversion is “12”, the number of characters in the disc name after conversion is “3”, and the number of characters varies (decreases). This is because the original disk name is divided by the group separation code “//” included in the original disk name. Therefore, in the check of the number of characters in the disk name in step S20, it is determined that the content of the original media additional information is not correctly left in the converted media additional information. Therefore, the flow proceeds to step S45.
[0080]
Thus, by adding a step of determining whether or not the content of the original media additional information is correctly left in the converted media additional information, compared to the first to third embodiments described above, Further, it is possible to provide an information recording / reproducing apparatus in which group management contrary to the user's intention is unlikely to occur.
[0081]
In the present embodiment, based on whether or not the number of characters in the disk name before and after conversion is the same, it is determined whether or not the content of the original media additional information is correctly left in the converted media additional information. Since it was set as the structure, the determination operation | movement in step S20 can be implement | achieved very simply. However, the determination operation in step S20 is not limited to this, and the configuration in which the original media additional information is completely stored and compared with the converted media additional information, or the original media additional information is stored. It goes without saying that various changes are possible, such as a configuration in which only the presence / absence of a disc name included in the converted media additional information is determined.
[0082]
Further, here, for convenience, the description has been made using the operation flowchart based on the second embodiment, but when configuring the group management operation of the present embodiment, the first embodiment and the third embodiment described above. It can also be based on
[0083]
Next, a fifth embodiment of the present invention will be described. FIG. 6 is an operation flowchart showing a fifth embodiment of the group management operation by the MD microcomputer 22. The group management operation of the present embodiment is composed of almost the same step configuration as the second embodiment (see FIG. 3), and is being described prior to the conversion operation of the original media additional information that does not follow the specific format. Is characterized in that a step of determining whether or not a specific code required for creating a specific format is included is added.
[0084]
Therefore, the same steps as those of the second embodiment are denoted by the same reference numerals as those in FIG. 3, and the description thereof will be omitted. Hereinafter, step S1 which is a characteristic part of the present embodiment will be described with emphasis. I will decide.
[0085]
In the group management operation of this embodiment, when additional media information (disc name) that does not conform to the specific format has already been written in the UTOC area of MD12, first, in step S1, it is necessary to create a specific format during the description. Is determined, that is, a disk name check is performed.
[0086]
If it is determined in step S1 that the original disk name does not include the group separation code “//”, the flow proceeds to the subsequent step S10, which is the same as in the first to fourth embodiments described above. Similarly, grouping of disk names is performed. In the present embodiment, after the disk names are grouped in step S10, the flow proceeds to any of steps S25, S30, and S35 without performing a group check (step S15) or a character count check (step S20). It is configured to proceed.
[0087]
On the other hand, if it is determined in step S1 that the original disk name includes the group separation code “//”, the flow proceeds to step S45. In step S45, the display device 24 displays a message indicating that the track grouping has failed because the original disk name is invalid.
[0088]
Thereafter, the flow proceeds to step S55, and an erasure confirmation message such as “Can I erase the original disk name?” Is displayed on the display device 24. If it is determined by the key determination in the subsequent step S60 that an input indicating “erase OK” has been made from the input device 23, the flow proceeds to step S65, and the original disk name is determined from the converted media additional information. The description portion indicating is deleted.
[0089]
Since the media additional information in which the original disk name is discarded in this way does not include any specific code that causes a format error, the flow returns to step S10, and the disk name grouping described above is performed. Will be done. On the other hand, if it is determined by the key determination in step S60 that an input indicating “cannot be erased” has been made from the input device 23, the group management operation is terminated as it is.
[0090]
In this way, prior to the conversion of the original media additional information not conforming to the specific format, a step for determining whether or not the specific code necessary for creating the specific format is included in the description is added. As a result, it is possible to provide an information recording / reproducing apparatus in which group management contrary to the user's intention is less likely to occur than in the first to fourth embodiments.
[0091]
Further, the group management operation of the present embodiment is configured to determine whether or not the grouping can be performed correctly before grouping the disk names in step S10. Therefore, there is no possibility that the disk name is unnecessarily rewritten, and it becomes possible to provide a highly reliable product.
[0092]
Here, for the sake of convenience, the description has been given using the operation flowchart based on the second embodiment. However, when configuring the group management operation of this embodiment, the first embodiment and the third embodiment described above are used. It can also be based on
[0093]
Furthermore, in the present embodiment, in order to facilitate understanding of the description, a configuration that prevents the occurrence of group management against the user's intention based on only the determination result of the disk name check in step S1 will be described as an example. However, the check mechanism of this embodiment is appropriately combined with the group investigation (step S15), the disk name character count check (step S20), or other check mechanisms shown in the first to fourth embodiments. Thus, the occurrence of group management against the user's intention can be more effectively prevented.
[0094]
In the first to fifth embodiments described above, the case where the present invention is applied to a mini-disc recording / playback apparatus has been described as an example. However, the scope of application of the present invention is limited to this. Instead, the present invention can be applied to various information recording / reproducing apparatuses.
[0095]
【The invention's effect】
As described above, in the information recording / reproducing apparatus according to the present invention, the main recording area in which the recording data is written, the recording position of the recording data in the main recording area, the reproduction order thereof, and the medium additional information for each recording medium And a sub-recording area in which track additional information for each recording data is written, a means for reading / writing information on a recording medium, and the recording data for dividing and managing the recording data in a plurality of groups Means for creating media additional information to be written in the sub-recording area of the media in a predetermined specific format; means for determining whether the media additional information is described in the specific format; and If it is determined that it is described in a specific format, the recording medium is not group-managed. When a new group management is performed on recording media on which media additional information that does not conform to the specific format has already been written, the description of the original media additional information remains in the specific format. In the information recording / reproducing apparatus having the conversion means, when the description is converted into the specific format while leaving the content of the original media additional information not conforming to the specific format, the converted media additional information Whether or not is correctly described according to the specific format is determined before writing to the recording medium.
[0096]
With such a configuration, even if media additional information not conforming to the specific format has already been written in the sub-recording area of the recording media to be newly managed by the group, it is contrary to the intention of the user. It is possible to provide an information recording / reproducing apparatus in which group management is difficult to occur.
[0097]
The information recording / reproducing apparatus having the above configuration is configured to notify that the group management of the recording medium has failed when it is determined that the converted media additional information is not correctly described according to the specific format. It is good to. By performing such a warning display, the user can recognize that the group management operation has failed and can change the original media additional information that caused the group management operation.
[0098]
The information recording / reproducing apparatus having the above configuration restores the converted media additional information to the original media additional information when it is determined that the converted media additional information is not correctly described according to the specific format. It is good to have a configuration.
[0099]
With such a configuration, even if the user finishes the group management operation as it is, the media additional information is not left in a state where it is arbitrarily changed to what the user does not intend. Therefore, there is no fear that the converted media additional information is erroneously written in the sub-recording area of the recording medium.
[0100]
In addition, the information recording / reproducing apparatus having the above configuration may be configured to discard the converted media additional information when it is determined that the converted media additional information is not correctly described according to the specific format. With such a configuration, the cause of failure of the group management operation can be eliminated, and the subsequent group management operation can be continued normally.
[0101]
Note that the information recording / reproducing apparatus configured as described above may be configured to confirm with the user whether or not the media additional information after conversion is discarded. By adopting such a configuration, it is possible to prevent the media additional information unexpectedly discarded by the user from being discarded.
[0102]
Alternatively, when it is determined that the converted media additional information is not correctly described according to the specific format, the information recording / reproducing apparatus having the above configuration adds the original media included in the converted media additional information. It is preferable to exclude the part causing the error from the description part indicating information. With such a configuration, the cause of failure of the group management operation can be eliminated, and the subsequent group management operation can be continued normally.
[0103]
Note that the information recording / reproducing apparatus having the above configuration asks the user before or after removing the part causing the error from the description part indicating the original media additional information included in the converted media additional information. It is good to have a configuration to check. With such a configuration, it is possible to prevent the media additional information from being edited unexpectedly by the user.
[0104]
In addition, the information recording / reproducing apparatus having the above-described configuration is the original medium additional information not complying with the specific format in order to newly register the existing recording data written in the main recording area of the recording medium not managed by the group. When the description is converted into the specific format while the contents of the media are left, the converted media additional information is only when it is determined that the converted media additional information is correctly described according to the specific format. Is preferably written in the sub-recording area of the recording medium.
[0105]
With such a configuration, in the group registration operation to be performed in the future, group management contrary to the user's intention is unlikely to occur, and converted media additional information that does not conform to the specific format is recorded. There is little risk of writing to the sub-recording area of the media by mistake.
[0106]
In addition, the information recording / reproducing apparatus having the above-described configuration is used to record new recording data to be written in the main recording area of a recording medium that is not group-managed in order to newly register the new media additional information that does not follow the specific format. When the description is converted into the specific format while leaving the contents of the file, the newly recorded data is recorded only when it is determined that the converted media additional information is correctly described according to the specific format. It is preferable to write in the main recording area of the medium and write the converted medium additional information in the sub recording area of the recording medium.
[0107]
With such a configuration, in the group registration operation to be performed in the future, group management contrary to the user's intention is unlikely to occur, and converted media additional information that does not conform to the specific format is recorded. There is little risk of writing to the sub-recording area of the media by mistake.
[0108]
Alternatively, the information recording / reproducing apparatus configured as described above may store the original media additional information that does not conform to the specific format in order to perform reservation group registration without corresponding recording data for recording media that are not group-managed. When the description is converted to the specific format while leaving the contents, the converted media additional information is only converted if it is determined that the converted media additional information is correctly described according to the specific format. It may be configured to write in the sub-recording area of the recording medium.
[0109]
With such a configuration, in the reservation group registration operation to be performed in the future, it is difficult for group management contrary to the user's intention to occur, and converted media additional information that does not conform to the specific format is There is little fear of being mistakenly written in the sub-recording area of the recording medium.
[0110]
The information recording / reproducing apparatus according to the present invention includes means for reading and writing information such as recording data and medium additional information on a recording medium, and means for creating medium additional information to be written on the recording medium in a predetermined specific format. And means for determining whether or not the media additional information is described in the specific format, and when the media additional information not conforming to the specific format has already been written, the contents of the original media additional information are left In the information recording / reproducing apparatus having the means for converting the description into the specific format, the description is converted into the specific format while leaving the contents of the original media additional information not conforming to the specific format. The media additional information after conversion is corrected according to the specific format. Whether it is written, it said to be determined configuration before writing to the recording medium.
[0111]
By adopting such a configuration, when the converted media additional information is not correctly described according to the specific format, the user is notified, or the converted media additional information is corrected or deleted. Can go.
[0112]
The information recording / reproducing apparatus according to the present invention includes a main recording area in which recording data is written, a recording position of the recording data in the main recording area, a reproduction order thereof, media additional information for each recording medium, and the recording data. Means for reading / writing information from / to a recording medium having track recording information for each track, and sub-recording of the recording medium in order to divide and manage the recording data in a plurality of groups Means for creating media additional information to be written in the area in a predetermined specific format; means for determining whether the media additional information is described in the specific format; and the media additional information described in the specific format If it is determined that the recording medium is group-managed, Means for converting the description into the specific format while leaving the contents of the original medium additional information when newly managing the recording media in which the medium additional information not conforming to the specific format has already been written; When the description is converted into the specific format while leaving the content of the original media additional information that does not conform to the specific format, the original medium addition information is added to the converted media additional information. It may be configured to determine whether or not the content of the information remains correctly before writing to the recording medium.
[0113]
With such a configuration, even if media additional information not conforming to the specific format has already been written in the sub-recording area of the recording media to be newly managed by the group, it is contrary to the intention of the user. It is possible to provide an information recording / reproducing apparatus in which group management is difficult to occur. In particular, in the information recording / reproducing apparatus configured as described above, even if the converted media additional information conforms to the format of a specific format, the group management operation is interrupted if the contents of the original media additional information are not correctly left. It becomes possible. Therefore, even when compared with the information recording / reproducing apparatus having the above-described configuration, the group management is more difficult to occur against the user's intention.
[0114]
Alternatively, the information recording / reproducing apparatus according to the present invention includes a main recording area in which recording data is written, a recording position of the recording data in the main recording area and a reproduction order thereof, media additional information for each recording medium, and the recording data. Means for reading / writing information from / to a recording medium having track recording information for each track, and sub-recording of the recording medium in order to divide and manage the recording data in a plurality of groups Means for creating media additional information to be written in the area in a predetermined specific format; means for determining whether the media additional information is described in the specific format; and the media additional information described in the specific format If it is determined that the recording medium is group-managed, And means for converting the description into the specific format while keeping the contents of the original medium additional information when newly managing a recording medium in which the medium additional information not conforming to the specific format is already written. The information recording / reproducing apparatus has a means for determining whether or not a specific code required for creating the specific format is included in the description of the original media additional information not conforming to the specific format. However, only when it is determined that the specific code is not included, the description may be converted into the specific format while retaining the content of the original media additional information.
[0115]
With such a configuration, even if media additional information not conforming to the specific format has already been written in the sub-recording area of the recording media to be newly managed by the group, it is contrary to the intention of the user. It is possible to provide an information recording / reproducing apparatus in which group management is difficult to occur. In addition, the information recording / reproducing apparatus configured as described above determines whether or not the conversion can be correctly performed before converting the media additional information into a specific format. Therefore, there is no possibility that the original media additional information is unnecessarily rewritten, and it becomes possible to provide a highly reliable product.
[Brief description of the drawings]
FIG. 1 is a block diagram showing an example of the configuration of a mini-disc recording / playback apparatus according to the present invention.
FIG. 2 is an operation flowchart showing a first embodiment of a group management operation by the MD microcomputer 22;
FIG. 3 is an operation flowchart showing a second embodiment of a group management operation by the MD microcomputer 22;
FIG. 4 is an operation flowchart showing a third embodiment of the group management operation by the MD microcomputer 22;
FIG. 5 is an operation flowchart showing a fourth embodiment of a group management operation by the MD microcomputer 22;
FIG. 6 is an operation flowchart showing a fifth embodiment of the group management operation by the MD microcomputer 22;
FIG. 7 is a diagram for explaining MD group management;
[Explanation of symbols]
1 Mini-disc recording / playback device (MD device)
2 input terminals
3 photoelectric elements
4 Digital PLL circuit
5 Frequency conversion circuit
6 Voice compression circuit
7 Shockproof memory controller
8 Signal processing circuit
9 Shockproof memory
10 Recording head drive circuit
11 Recording head
12 Mini Disc (MD)
13 Optical pickup
14 High frequency amplifier (RF amplifier)
15 Voice decompression circuit
16 Digital / analog conversion circuit (D / A conversion circuit)
17 Output terminal
18 Servo circuit
19 Driver circuit
20 Spindle motor
21 Feed motor
22 MD control microcomputer (MD microcomputer)
23 Input device
24 display devices

Claims (13)

Means for reading and writing information to the recording medium and a sub recording area where the main recording area and the media added information that recording data is written is written,
To divide managing the recording data in a plurality of group units, means for creating a pre-decided Deer additional information in specific formats,
Means for determining whether the media additional information is described in the specific format;
Means for recognizing that the recording medium is group-managed when it is determined that the media additional information is described in the specific format;
Means for converting the description into the specific format while keeping the contents of the original medium additional information when a new group management is performed on recording media in which the medium additional information not conforming to the specific format is already written. In an information recording / reproducing apparatus having
When the description is converted to the specific format while leaving the content of the original media additional information that does not conform to the specific format, whether or not the converted media additional information is correctly described according to the specific format. , the information recording and reproducing apparatus characterized by determining before writing the record medium.   2. The information recording according to claim 1, wherein when it is determined that the converted media additional information is not correctly described in accordance with the specific format, notification is made that group management of the recording medium has failed. Playback device.   3. The media additional information after conversion is returned to the original media additional information when it is determined that the converted media additional information is not correctly described according to the specific format. The information recording / reproducing apparatus described in 1.   4. The media additional information after conversion is discarded when it is determined that the converted media additional information is not correctly described in accordance with the specific format. Information recording / reproducing apparatus.   5. The information recording / reproducing apparatus according to claim 4, wherein whether or not the media additional information after conversion is discarded is confirmed with the user.   When it is determined that the converted media additional information is not correctly described according to the specific format, the error is caused from the description portion indicating the original media additional information included in the converted media additional information. 4. The information recording / reproducing apparatus according to claim 1, wherein the information recording / reproducing apparatus according to claim 1 is excluded.   The user confirms whether or not to allow the error before removing the portion that caused the error from the description portion indicating the original media additional information included in the converted media additional information. Information recording / reproducing apparatus. In order to newly register existing recording data written in the main recording area of recording media that is not group-managed, the description is specified without changing the content of the original media additional information that does not conform to the specific format. When converted to format,
The media additional information after conversion is written in the sub-recording area of the recording medium only when it is determined that the converted media additional information is correctly described according to the specific format. Item 8. The information recording / reproducing apparatus according to any one of Items 7 to 8. In order to newly register new recording data to be written in the main recording area of recording media that is not group-managed, the description is specified without changing the content of the original media additional information that does not conform to the specific format. When converted to format,
Only when it is determined that the converted media additional information is correctly described according to the specific format, the new recording data is written in the main recording area of the recording medium, and the converted media additional information is stored in the sub recording medium. 9. The information recording / reproducing apparatus according to claim 1, wherein the information recording / reproducing apparatus is written in a recording area.   In order to register a reserved group that does not have corresponding recording data for recording media that are not group-managed, the description is written in the specific format while retaining the contents of the original media additional information that does not conform to the specific format. When the converted media additional information is written to the sub-recording area of the recording medium only when it is determined that the converted media additional information is correctly described according to the specific format. An information recording / reproducing apparatus according to any one of claims 1 to 9. Means for reading and writing of the recording data and media additional information to the recording medium,
Media additional information to be written into the record media and means for creating at specific format,
Means for determining whether the media additional information is described in the specific format;
In the information recording / reproducing apparatus having means for converting the description into the specific format while leaving the content of the original media additional information when the media additional information not conforming to the specific format has already been written,
When the description is converted into the specific format while leaving the content of the original media additional information not conforming to the specific format,
Information recording and reproducing apparatus characterized by medium additional information after conversion whether written correctly in accordance with the specific format, to determine before writing the record medium. Means for performing a main recording area where recording data is written, and the sub recording area media additional information is written, and writes information to a recording medium having,
To divide managing the recording data in a plurality of group units, means for creating at specific formatting the media additional information,
Means for determining whether the media additional information is described in the specific format;
Means for recognizing that the recording medium is group-managed when it is determined that the media additional information is described in the specific format;
Means for converting the description into the specific format while keeping the contents of the original medium additional information when a new group management is performed on recording media in which the medium additional information not conforming to the specific format is already written. In an information recording / reproducing apparatus having
When the description is converted to the specific format while leaving the content of the original media additional information not conforming to the specific format, the content of the original media additional information is correctly left in the converted media additional information. or dolphin not, the information recording and reproducing apparatus characterized by determining before writing the record medium. Means for performing a main recording area where recording data is written, and the sub recording area media additional information is written, and writes information to a recording medium having,
To divide managing the recording data in a plurality of group units, means for creating a pre-decided Deer additional information in specific formats,
Means for determining whether the media additional information is described in the specific format;
Means for recognizing that the recording medium is group-managed when it is determined that the media additional information is described in the specific format;
Means for converting the description into the specific format while keeping the contents of the original medium additional information when a new group management is performed on recording media in which the medium additional information not conforming to the specific format is already written. In an information recording / reproducing apparatus having
Means for determining whether or not a specific code required for creation of the specific format is included in the description of the original media additional information not conforming to the specific format;
Only when it is determined that the specific code is not included, the description is converted into the specific format while retaining the content of the original media additional information.

Images