JP2004139647A - Data processor and data processing program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To correct a Katakana delimiter position within group information recorded on a recording medium. <P>SOLUTION: When a MD 50 is loaded as a recording medium with which the Katakana delimiter position of a group title which is group information is mistakenly recorded in a MD recorder 10 as a data processor, a CPU 20a of a system controller 20 reads the group title from the MD 50, corrects the Katakana delimiter position of the read group title and memorizes it to a RAM 20b of the system controller 20. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a data processing device and a data processing program.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, actual data such as music data is recorded on a recording medium such as a rewritable optical disk such as an MD (Mini Disc) or a CD-RW (Compact Disc Rewritable), and the actual data is reproduced or already recorded. There is an optical disk device that performs processing such as rewriting actual data.
[0003]
Recording of data recorded on the optical disk is performed by magnetization of a magnetic film. That is, the magnetic film of the optical disk is heated by a laser spot to a temperature higher than the Curie point by an optical pickup device, a magnetic field that reverses according to the data is applied thereto, and when cooled, the data is recorded on the magnetic film as a change in the magnetization direction. Such recording can be performed on a portion where data has already been recorded. Thus, data can be overwritten on the optical disk.
[0004]
Here, a case in which music information is recorded as actual data in an MD will be described. Actual data is recorded, reproduced, and managed on the basis of a unit called a track. In a configuration in which music data for each track is recorded as actual data, TOC (Table Of Contents) information is recorded as MD management information.
[0005]
The TOC information includes information that cannot be rewritten with the MD-specific information, UTOC (User's Table Of Contents) that can be rewritten by the user, and the like. In the UTOC, track information about tracks recorded on the MD, and name information about the MD and each track are recorded. The name information includes a disc title for the MD, a track title (for example, a song title) for each track, and the like. With this UTOC, the MD and each track thereof can be easily managed only by the contents of the UTOC on the area where the actual data is recorded, without directly operating the area where the actual data is recorded.
[0006]
In recent years, a device that allows a user to freely group a plurality of (or one) tracks and has a function of recording and managing information of the group in a UTOC has been implemented. (For example, see Patent Document 1). In this case, the name information further includes a group title included in each group and a track number of a track included in each group. The group title is recorded in an area for recording a disc title.
[0007]
For example, when the disc title is “DT1”, and the track numbers N1 to N2 and N3 to N4 are each a group, and the group names are “GT1” and “GT2”, the disc title of the MD is Is recorded as "0; DT1 // N1-N2; GT1 // N3-N4; GT2 //". ";" And "//" are special characters, ";" indicates the end of the description of the group range, and "//" indicates the end of the description of the group title (and disc title).
[0008]
In this specification, "" is used to clearly indicate the beginning and end of a character or character string, and is not actually used. This applies to the following objects of the present invention, embodiments of the present invention, and the like.
[0009]
In the MD recording / reproducing device, there are both a device having a group management function and a device having no group management function. Therefore, in order to record a group title as group information in MD on a device having no group management function, it is necessary to use a disc. When editing the title, it is necessary to input and record the group title according to the above rules. In an apparatus having a group management function, when an MD is loaded, group information is recorded on the loaded MD, and it is necessary to determine whether or not to perform group management.
[0010]
Here, with reference to FIG. 7, a description will be given of a conventional group management execution determination process executed in an MD recording / reproducing apparatus having a group management function. FIG. 7 is a flowchart showing a conventional group management execution determination process. First, the control unit of the MD recording / reproducing apparatus having the group management function determines whether reading of the TOC information has been started from the area in which the TOC information of the MD loaded in the MD recording / reproducing apparatus has been recorded ( Step S81). If the reading of the TOC information has not been started (Step S81; No), the control unit returns to Step S81.
[0011]
Then, when the reading of the TOC information is started (Step S81; Yes), the control unit determines whether the reading of the TOC information is completed (Step S82). If the reading of the TOC information has not been completed (Step S82; No), the control unit returns to Step S82. When the reading of the TOC information is completed (Step S82; Yes), the control unit starts reading the disc title in the read TOC information. Then, the control unit determines whether the reading of the disc title has been completed (step S83). If the reading of the disc title has not been completed (Step S83; No), the control unit returns to Step S83.
[0012]
When the reading of the disc title is completed (Step S83; No), the control unit determines that the character after the group range is “;” and the character after the group title is “//” in the read disc title. Is determined (step S84). In step S84, specifically, it is determined whether or not a combination of ";" and "//" exists for each group and is in a proper position according to the above rule.
[0013]
If there is a combination of “;” and “//” for each group and the combination is in place (step S84; Yes), the control unit sets 1 to the group management flag in the RAM provided in the MD recording / reproducing apparatus. (Step S85), and terminates the group management execution determination process. If there is a combination of ";" and "//" for each group and it is not in the proper place (step S84; No), the control unit sets the group management flag to 0 in the RAM provided in the MD recording / reproducing apparatus. (Step S86), and terminates the group management execution determination process.
[0014]
When the group management flag stored in the RAM is 1, the MD recording / reproducing apparatus having the group management function determines that group management information is recorded in the loaded MD and performs various processes including group management. Similarly, when the group management flag stored in the RAM is 0, it is determined that the group management information is not recorded in the loaded MD, and various processes except the group management are executed.
[0015]
MD recording / reproducing apparatuses that can use not only alphabets but also katakana for disc titles have been implemented. For example, if the disc title is registered as "AIUEO" and the group title is registered as "Kakikukeko", the area for recording the MD disc title is "0; {AIUEO} // 1; {KAKIKUKEKO} //". Is recorded. As described above, katakana characters are written in Roman alphabets in uppercase alphabets. The katakana character "@" is a special character and is added to the beginning and end of the alphabet character string indicating the katakana character string. In the MD recording / reproducing apparatus having the group management function, if the user inputs each title in katakana, the disc title is automatically recorded on the MD in the above-described format.
[0016]
[Patent Document 1]
JP-A-2002-150749
[0017]
[Problems to be solved by the invention]
However, in a conventional optical disk device, when kana is used for a disk title, group information may not be recognized in some cases. Specifically, in a MD recording / reproducing apparatus without a group management function, when a user inputs a disc title using katakana, the position of katakana discriminating characters becomes indeterminate. For example, if the disc title is input as "AIUEO" and the group title as "Kakikukeko", the area for recording the MD disc title is "0; @ AIUEO // 1; KAKIKUKEKO // @". Recorded automatically.
[0018]
When using the MD in which the position of the katakana delimiter character in the disc title is recorded in an indefinite manner as described above, in the group management execution determination process shown in FIG. It is determined that the combination with “//” exists and is not in the proper position, and the process proceeds to step S86. This is because “//” sandwiched between katakana delimiters is not recognized as “//”, a special character indicating the end of the description of the group title (and disc title). In this case, the group management is not recognized, and, for example, as in the above format, all the character strings of “0; {AIUEO // 1; KAKIKUKEKO //}” are recognized as the disc titles as written. . Similarly, the character string “1-2; {AIUEO} // 3; ABC // 5-10; {KAKIKUKEKO} //” is converted to, for example, “1-2; The position of the katakana delimiter is indefinite, such as {AIUEO // 3; {ABC // 5-10; {KAKIKUKEKO //}}, and recorded on the MD.
[0019]
An object of the present invention is to correct katakana delimited character positions in group information recorded on a recording medium.
[0020]
[Means for Solving the Problems]
The present invention is a data processing device that performs at least one of a reproduction process and a recording process of data recorded on a rewritable recording medium,
The data recorded on the recording medium has real data divided by tracks and management data for managing the real data,
The management data has group information on a group including at least one of the tracks,
The group information is information that can be written in katakana by using katakana delimiters.
A correction unit that corrects the katakana delimiter position of the group information recorded on the recording medium when the recording medium on which the group information with the incorrect katakana delimiter position is recorded is loaded;
A storage unit that stores the group information corrected by the correction unit,
A processing unit that performs at least one of a reproduction process and a recording process of the actual data based on the group information stored in the storage unit.
[0021]
Further, the present invention, an editing unit for editing the group information stored in the storage means,
A recording unit that records the group information edited by the editing unit on the loaded recording medium,
It is preferable that the processing unit includes at least one of a reproduction process and a recording process of the actual data based on the group information edited by the editing unit.
[0022]
Furthermore, the present invention preferably includes a recording unit that records the group information stored in the storage unit on the loaded recording medium.
[0023]
Further, according to the present invention, a selection unit for selecting whether to overwrite the group information stored in the storage unit with the group information recorded on the loaded recording medium, and overwriting by the selection unit It is preferable that a recording unit that, when selected, records the group information stored in the storage unit on the loaded recording medium.
[0024]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. First, the features of the apparatus will be described with reference to FIG. FIG. 1 is a diagram showing a configuration of an MD recorder 10 according to the present embodiment.
[0025]
In the embodiment of the present invention, an MD recorder 10 capable of recording and reproducing an MD 50 which is a magneto-optical recording medium for recording and reproduction includes a turntable 11 capable of loading the MD 50, a recording head 12 magnetically recording the MD 50, A spindle motor 13 for supplying the rotational power of the turntable 11; an optical pickup 14 for reproducing and recording information on the information recording surface of the MD 50 by a semiconductor laser beam; and a feed for moving the optical pickup 14 in the radial direction of the disk of the MD 50. A motor 15, an RF amplifier 16 for electrically converting a signal read from the MD 50 or information to be recorded on the MD 50, a head driver 17 for controlling the movement of the recording head 12, and a digital signal circuit 18 for performing various digital signal processing; Buffer memo for data used in various processes of the digital signal circuit 18 19, consists of a system controller 20 for controlling each section, each section is connected by a physical or bus.
[0026]
The digital signal circuit 18 performs ADIP (Address In Pre-groove on Recordable Disc) decoder for decoding an address recorded in the MD 50 capable of recording and reproduction, and performs EFM (Eight to Fourteen Modulation) modulation, which is a signal modulation method. An EFM / CIRC encoder / decoder that adds a Cross Interleave Read-Solomon Coding (CIRC) for correcting an error code, a memory controller that saves data to a buffer memory 19 for earthquake proofing, and a data compression / expansion adapted to human auditory characteristics ATRAC (Acoustic Transferred Adapted Coding) encoder / decoder and MD50 rotation, information reproduction, information recording, etc. And a servo control circuit for the server control Te.
[0027]
The digital signal processing circuit 18 is connected at a terminal 21 to a D / A converter and at a terminal 22 to an A / D converter. In addition, the system controller 20 is connected to an operation unit 30 that is communicatively connected by an infrared communication method or the like and receives an information operation input of the user, and a display panel 40 that displays information to the user.
[0028]
The system controller 20 includes a CPU (Central Processing Unit) 20a for centrally controlling each unit of the MD recorder 10, a built-in RAM (Random Access Memory) 20b for temporarily storing various information, and a built-in RAM for storing various information. Each section is connected by a bus, and the bus is connected to the digital signal processing circuit 18, the operation section 30, and the display panel section 40 by a connection section, not shown, by a ROM (Read Only Memory) 20 c. Specifically, the ROM 20c stores various application programs for controlling the operation of the MD recorder 10, data used by the application programs, and the like. Further, the CPU 2a reads various application programs stored in the ROM 20c, develops data in the RAM 20b, executes the application programs, and centrally controls each unit.
[0029]
More specifically, the CPU 20a reads the program for the group management execution determination process stored in the ROM 20c, and executes the group management execution determination process. By executing the group management execution determination process, the CPU 20a reads the TOC information recorded in the MD 50 and the disc title in the TOC information, and if the katakana delimiter position of the group title in the read disc title is incorrect, The position is corrected and stored as a corrected disk title in the RAM 20b, and a group management flag indicating whether group management is possible using the disk title or the corrected disk title is set in the RAM 20b (FIGS. 2 to 2). 5).
[0030]
The correction unit described in the claims of the present invention is, for example, a CPU 20a that executes step S50 shown in FIG. 3 of the present embodiment as being realized by cooperation between the program and the CPU. The storage unit described in the claims is, for example, the RAM 20b of the present embodiment. The processing unit described in the claims includes, for example, a turntable 11, a recording head 12, a spindle motor 13, an optical pickup 14, a feed motor 15, an RF amplifier 16, a head driver 17, which reproduces and processes actual data in the present embodiment. A digital signal circuit 18, a buffer memory 19, and a system controller 20; The recording medium described in the claims of the present invention is, for example, the MD50 of the present embodiment.
[0031]
The editing unit described in the claims is, for example, the system controller 20 and the operation unit 30 of the present embodiment. The recording unit described in the claims includes, for example, the turntable 11, the recording head 12, the spindle motor 13, the optical pickup 14, the feed motor 15, the RF amplifier 16, the head driver 17, the digital signal circuit 18, A memory 19 and a system controller 20;
[0032]
The operation unit 30 includes various operation keys for instructing recording, reproduction, stop, deletion, and the like, and input keys for various symbols, alphabets, and katakana. When various keys are pressed, corresponding operation signals are generated to generate a system controller. 20. The display panel unit 40 includes a display screen such as an LCD (Liquid Crystal Display), and displays information input from the operation unit 30 and various display information output from the system controller 20.
[0033]
The MD 50 is housed in a cartridge, and is capable of irradiating a laser beam from the optical pickup 14 and applying a magnetic field from the magnetic head 12 by opening and closing a shutter mechanism provided in the cartridge during recording or reproduction. It is configured to be able to.
[0034]
The MD 50 is loaded on the turntable 11 and is controlled by the spindle motor 13 to rotate at a constant linear velocity (CLV: Constant Liner Velocity). In addition, a mechanical switch, a photo interrupter, or the like for detecting a detached state of the MD 50 (whether or not the MD 50 is mounted) or a reflected light of a laser beam of the optical pickup 14 is detected with respect to the MD 50 loaded portion in the MD recorder 10. An undetected disk detector is provided.
[0035]
The optical pickup 14 is provided at a position facing the magnetic head 12 with the MD 50 loaded therebetween. The optical pickup 14 includes an objective lens (not shown), a biaxial mechanism, a semiconductor laser light source, and a light receiving unit that reflects light emitted from the semiconductor laser light source on the surface of the magneto-optical disk and receives the reflected light. Further, it has a focusing coil for moving the objective lens for servo control, and a tracking coil.
[0036]
The reflected light information detected by the light receiving section in the optical pickup 14 is supplied to the RF amplifier 16 and is subjected to current / voltage conversion and amplification. Then, matrix calculation processing is performed, and focus error signals FE, A tracking error signal TE for tracking servo is generated, and an RF signal is also generated.
[0037]
The focus error signal FE and the tracking error signal TE generated by the RF amplifier 16 are subjected to phase compensation, gain adjustment, and the like by a servo control circuit in the digital signal processing circuit 18 and then to a two-axis mechanism via a drive amplifier. It is applied to the focusing coil and the tracking coil.
[0038]
Further, a thread error signal is generated from the tracking error signal TE and transmitted to the feed motor 15, whereby the feed control of the optical pickup 14 is performed. The RF signal generated by the RF amplifier 16 is binarized and EFM-demodulated by an EFM / CIRC encoder / decoder in the digital signal processing circuit 18 and subjected to CIRC error correction processing to obtain a digital signal. It is supplied to a memory controller in the processing circuit 18.
[0039]
Here, an operation of reproducing information in the MD 50 in the MD recorder 10 will be described. In the MD 50, a tracking groove is provided in a meandering manner at a predetermined frequency in advance, and address data is recorded. Address data in the reproduced RF signal is converted into a CLV control signal by an ADIP decoder in the digital signal processing circuit 18. Is modulated. The EFM / CIRC encoder decoder in the digital signal processing circuit 18 generates a spindle error signal for controlling the CLV rotation of the disk of the MD 50 based on the binarized EFM signal or the CLV control signal, and generates the digital signal processing circuit 18. Is applied to the spindle motor 13 via a servo control circuit built in the controller and CLV controlled.
[0040]
Further, the EFM / CIRC encoder decoder controls the pull-in operation of the phase-locked loop based on the binarized EFM signal, and generates a reproduction clock for the decoding process. Further, the error-corrected binary data is written to the buffer memory 19 by the memory controller. The binarized data is MD50 audio data. When a predetermined amount or more of data is accumulated in the buffer memory 19, the memory controller reads from the buffer memory 19 at a transfer rate sufficiently lower than the write transfer rate and outputs the data as audio data. Since the memory controller temporarily stores the data in the buffer memory 19 and then outputs the data as audio data, even if an unnecessary track jump or the like occurs due to disturbance such as vibration, continuous reading of data from the optical pickup 14 is interrupted. Since the audio data stored in the buffer memory 19 is output during the rearrangement to the address where the track jump has occurred, continuous output of continuous audio can be realized as audio output audio.
[0041]
The audio data read from the buffer memory 19 by the memory controller is decompressed into digital audio data by an ATRAC decoder in the digital signal processing circuit 18 and is converted to digital audio data via a terminal 21 by a D / A converter (not shown). Applied. The D / A converter converts the audio digital data into an analog audio signal, is supplied to a playback output system such as an amplifier, a speaker, and headphones (not shown), and is output as playback audio.
[0042]
At the time of such a reproducing operation, the system controller 20 transfers various servo commands to the servo control circuit in accordance with the operation of the operation unit 30 or gives a command for controlling the buffer memory 19 to the memory controller. The display panel unit 40 controls the display panel unit 40 to display character information such as the elapsed playing time and the title of the track (song) being reproduced, and performs spindle servo control and decoding processing control by an EFM / CIRC encoder / decoder. .
[0043]
Next, an operation of recording information on the MD 50 in the MD recorder 10 will be described. In the MD recorder 10, an analog audio signal output from an analog output terminal of a playback device such as a CD player is converted into digital audio data by an A / D converter (not shown) and input to a digital signal processing circuit 18 via a terminal 22. Is done.
[0044]
The digital audio data is input to an ATRAC encoder / decoder in the digital signal processing circuit 18 and compressed by the ATRAC method. The compressed digital audio data is temporarily stored in the buffer memory 19 by the memory controller. The memory controller detects that a predetermined amount of the compressed digital audio data stored in the buffer memory 19 has been stored, and permits reading from the buffer memory 19. With the permission, the compressed data read from the buffer memory 13 is subjected to processing such as error correction code addition of the CIRC system and EFM modulation by the EFM / CIRC encoder / decoder and supplied to the head driver 17.
[0045]
The head driver 17 applies a magnetic field to the N pole or the S pole of the recording head 12 according to the data supplied from the EFM / CIRC encoder decoder. At the time of recording in which such a magnetic field is applied, the system controller 20 controls the output power of the semiconductor laser (not shown) of the optical pickup 14 to a higher power than at the time of reproduction to heat the surface of the magneto-optical disk to the Curie temperature. To do. Thereby, the magnetic field information applied from the recording head 12 is fixed on the information recording surface of the MD 50, and the data is recorded as the magnetic field information.
[0046]
Similarly to information reproduction, the system controller 20 transfers various servo commands to the servo control circuit at the time of information recording, gives a command to control the buffer memory 19 to the memory controller, and records the recording elapsed time and the like. The display panel 40 controls the display panel unit 40 to display the track number and the like of the recorded program. The EFM / CIRC encoder / decoder controls the spindle servo and the encoding process.
[0047]
The MD recorder 10 can record, in the MD 50, TOC information that is management data corresponding to each track of the audio data and the entire disc, in addition to the audio data as the actual data. UTOC in the TOC information, which is rewritable information by the user, is input from the user via the operation unit 30.
[0048]
The TOC information includes information that is not rewritable with the unique information of the MD 50 and UTOC or the like that is rewritable by the user. In the UTOC, track information about tracks recorded on the MD, and name information about the MD and each track are recorded. The track information includes the number of tracks (number of tracks) of all tracks identified by the track number, fragmentation information of a plurality of tracks, and the like. The name information includes, for the MD, a disc title, a start and end address of each track, a track title (for example, a song title), a recording year, month, day, hour, minute, and second of each song. With this UTOC, the MD and each track thereof can be easily managed only by the contents of the UTOC on the area where the UTOC is recorded, without directly operating the area where the actual data is recorded.
[0049]
As described in the related art, the MD recorder 10 has a function of recognizing each group and performing group management by adding a group title to a disk title of the MD UTOC to form group information. I do. The MD recorder 10 can also use katakana for the group title. The operation unit 30 allows input operation of katakana in addition to various numbers and alphabets. The display panel unit 40 can display those characters. It is.
[0050]
Next, a program execution operation of the MD recorder 10 will be described with reference to FIGS. FIG. 2 is a flowchart showing the group management execution determination processing, FIG. 3 is a flowchart showing the group management format check processing during the group management execution determination processing shown in FIG. 2, and FIG. FIG. 5 is a flowchart showing the katakana delimited character position correction processing during the management format check processing, and FIG. 5 is a flowchart showing the continuation of the katakana delimited character position correction processing shown in FIG.
[0051]
First, with reference to FIG. 2, a group management execution determination process for determining whether group information is recorded on the MD 50 loaded in the MD recorder 10 and group management can be performed on the MD 50 or not. explain. In the system controller 20, the CPU 20a reads the program of the group management execution determination process from the ROM 20c and develops the program in the RAM 20b, triggered by the detection of the loading of the MD 50 in the MD recorder 10 by a disc detection unit (not shown). To execute a group management execution determination process.
[0052]
When the MD 50 is loaded on the MD recorder 10, the CPU 20a reads the TOC information from the TOC area where the TOC information on the information recording surface of the MD 50 loaded on the MD recorder 10 is loaded by the information reproducing system such as the optical pickup 14. Is read and stored in the RAM 20b. First, the CPU 20a determines whether reading of the TOC information has been started (step S1). If the reading of the TOC information has not been started (Step S1; No), the CPU 20a returns to Step S1.
[0053]
When the reading of the TOC information is started (Step S1; Yes), the CPU 20a determines whether the reading of the TOC information is completed (Step S2). If the reading of the TOC information has not been completed (Step S2; No), the CPU 20a returns to Step S2. When the reading of the TOC information is completed (Step S2; Yes), the CPU 20a starts reading the disc title in the read TOC information. Then, the CPU 20a determines whether the reading of the disc title has been completed (step S3). If the reading of the disc title has not been completed (Step S3; No), the CPU 20a returns to Step S3.
[0054]
When the reading of the disc title is completed (Step S3; No), the CPU 20a checks whether the disc title stored in the RAM 20b is in a group-manageable format, and the format is not group-manageable, but can be corrected. If there is, a group management format check process for correcting the disc title to a format that can be managed in a group and storing it in the RAM 20b is executed (step S4). Correction to a format that allows group management is specifically correction of the position of katakana delimiters in a disc title that includes group information.
[0055]
Then, the CPU 20a can perform group management by referring to the corrected disk title corrected in step S4 and stored in the RAM 20b or the disk title stored in the RAM 20b in step S3 when there is no corrected disk title. It is determined whether or not this is the case (step S5). In step S5, for example, the description format of each group tie title is such that the start track number N1, the special symbol "-" of the group, the end track number N2 of the group, the special symbol ";", the formal group title character string, It is determined whether all the group titles are arranged in the order of the special symbol “//”.
[0056]
Formal group titles include the alphabet and various symbol parts as they are, and the katakana character string is indicated by the katakana character "＾" at the beginning and end of the character string. It shall be written in Roman characters. For example, when the group title of a certain group is “K AIWAO”, it is determined whether or not “N1-N2; K {AIUEO} //” is described. It is also possible that one track belongs to one group. For example, when only a track number N1 belongs to a certain group, "N1; {AIUEO} ///" is described. In addition, the group does not need to have a group title. In this case, "N1-N2;//" is described, and each of them is determined to be a description format in which group management is possible.
[0057]
As one of the description formats other than the above, for example, the description “N1-N2; K ＾ AIUEO // ＾” recorded by an MD recorder without a group management function as described in the subject of the present invention is used in step S4. , "N1-N2; K {AIUEO} //", it is not necessary to particularly consider whether "//" is sandwiched between katakana delimiters.
[0058]
In addition, the number of characters of the alphabet character string indicating the katakana character string between the katakana delimiter characters “＾” and “＾” is specified to be less than 80 characters including the katakana delimiter character. In some cases, it is also specified that it is not converted to katakana. Therefore, in step S4, even if the number of characters between the katakana delimiters is 80 or more and the characters are not corrected, it is not necessary to consider whether "//" is interposed between the katakana delimiters. Is also good.
[0059]
If group management is possible (step S5; Yes), the CPU 20a sets 1 to the group management flag, stores the group management flag in the RAM 20b (step S6), and ends the group management execution determination process. If group management is not possible (step S5; No), the CPU 20a sets 0 to the group management flag, stores the group management flag in the RAM 20b (step S7), and ends the group management execution determination process.
[0060]
Here, the group management format check processing in step S4 shown in FIG. 2 will be described with reference to FIG. When the reading of the disc title is completed (Step S3; No), the CPU 20a starts executing the group management format check processing. First, the CPU 20a counts the total number of characters in the disc title in the RAM 20b (step S41). Then, in step S41, the CPU 20a determines whether or not the counted number of characters is four or more (step S42). This is because the description of the group information requires at least four characters such as a track number, ";" and "//".
[0061]
If it is not four or more characters (step S42; No), the CPU 20a ends the group management format check process and proceeds to step S5. This is because there is no possibility that there is a description of group information in the disc title, and no correction is necessary. If there are four or more characters (step S42; Yes), there is a possibility that group information is described in the disc title, and the CPU 20a checks all katakana delimiters "@" in the disc title in the RAM 20b (step S42). S43).
[0062]
Then, the CPU 20a determines whether there is a katakana delimiter in the disc title in the RAM 20b (step S44). If there is no katakana delimiter (step S44; No), there is no possibility that katakana is described in the group information and no correction is necessary, so the CPU 20a ends the group management format check processing and proceeds to step S5 in FIG. Proceed to.
[0063]
If there is a katakana delimiter (step S44; Yes), the CPU 20a moves the reference position to the next katakana delimiter position and clears the delimiter position counter stored in the RAM 20b (step S45). The delimiter position counter is a counter for the number of characters from the katakana delimiter indicating the beginning of katakana to the next katakana delimiter. Then, the CPU 20a determines whether or not the delimiter position counter in the RAM 20b is 80 or more (step S46). If the delimiter position counter is 80 or more, the alphabet character string indicating the katakana character string is not converted to katakana characters.
[0064]
If the delimiter position counter is not equal to or greater than 80 (step S46; No), the CPU 20a sequentially retrieves one character that has not been retrieved yet, starting from the first character of the disc title in the RAM 20b (step S47). Then, the CPU 20a determines whether or not the character extracted immediately before in step S47 is a katakana delimiter (step S48). A step S48 detects a katakana delimiter character indicating the end of the katakana character string.
[0065]
If the character is not a katakana delimiter (step S48; No), the CPU 20a determines whether or not the current reference position is a group delimiter (step S49). Specifically, it is determined whether the character extracted immediately before is “/” and the character extracted immediately before is “/” or “//” indicating a group separation. If it is a group delimiter (step S49; Yes), the CPU 20a executes a katakana delimiter position correction process for correcting a katakana delimiter position at an incorrect position in the disc title (step S50). The katakana delimited character position correction processing will be described later in detail.
[0066]
Then, the CPU 20a stores the corrected character string created in step S50 in the RAM 20b as a disk title with corrected group information (step S51), and the CPU 20a ends the group management format check processing and proceeds to step S5. . If it is not a group break (step S49; No), the CPU 20a increments the delimiter position counter in the RAM 20b by one (step S52), and returns to step S46.
[0067]
If the delimiter position counter is equal to or greater than 80 (step S46; Yes), the katakana character string is not subject to katakana conversion, and the CPU 20a sets the katakana delimiter in the range of the disc title that has not yet been extracted in step S47. It is determined whether or not there is (step S53). If the character is a katakana delimited character (step S48; Yes), the katakana character string is normal and not subject to correction, so the CPU 20a proceeds to step S53.
[0068]
If there is a katakana delimiter (step S53; Yes), the CPU 20a returns to step S45. If there is no katakana delimiter (step S53; No), the CPU 20a ends the group management format check processing and proceeds to step S5 in FIG.
[0069]
Here, the katakana delimited character position correction processing in step S50 shown in FIG. 3 will be described with reference to FIGS. If it is a group division (step S49; Yes), the CPU 20a determines whether or not the capacity of the disc title in the RAM 20b is 1792 bytes or more (step S501). This determines whether the disc title is within the allowed normal capacity. Actually, 1792 bytes is the maximum allowable value of the total capacity of the disc title and the track title, and here, for simplicity, shows a case where the track title does not exist and is 0 byte. That is, when the number of bytes of the track title increases, the number of bytes decreases from 1792 bytes.
[0070]
If it is 1792 bytes or more (step S501; Yes), the disc title capacity exceeds the normal range, the CPU 20a ends the group management format check processing of FIG. 3, and proceeds to step S5 of FIG.
[0071]
If it is not more than 1792 bytes (step S501; No), the disc title capacity is within the normal range, and the CPU 20a sequentially retrieves one character that has not yet been retrieved from the first character of the disc title in the RAM 20b (step S502). Then, the CPU 20a increments the character number counter stored in the RAM 20b (step S503). If the process goes through step S503 for the first time, the character number counter is set to 1 and stored in the RAM 20b. The character number counter is for counting the number of characters from the katakana delimiter character positions "@" to "@".
[0072]
Then, the CPU 20a determines whether or not the number-of-characters counter is 80 or more (step S504). If the number-of-characters counter is not 80 or more (Step S504; No), the CPU 20a determines whether or not the character extracted immediately before in Step S502 is Null (whether the character extracted immediately before does not exist or exists). A determination is made (step S505).
[0073]
If the character extracted immediately before is not Null (Step S505; No), the CPU 20a stores the character extracted immediately before in Step S502 in the RAM 20b as a pre-conversion character string of Katakana conversion (Step S506). If the character string before conversion already exists in the RAM 20b, the currently extracted character is added to the character string before conversion. Then, the CPU 20a determines whether or not the character extracted immediately before in step S502 is a katakana delimiter (step S507).
[0074]
If the character extracted immediately before is a katakana delimiter (step S507; Yes), the CPU 20a increments the delimiter counter stored in the RAM 20b (step S508). When the process goes through step S508 for the first time, the delimiter character counter is set to 1 and stored in the RAM 20b. The delimiter counter is for counting the number of katakana delimiters, 1 indicating the beginning of an alphabetic character string indicating a katakana character string and 2 indicating the end.
[0075]
Then, the CPU 20a determines whether or not the delimiter character counter in the RAM 20b is 2 (step S509). When the delimiter character counter is 2 (step S509; Yes), the character extracted immediately before in step S502 indicates the end of the alphabet character string indicating the katakana character string, so that the CPU 20a determines the character string before conversion in the RAM 20b. The character string is converted into katakana characters, and the character string is set as a converted character string (step S510). In step S510, specifically, only the Roman alphabet is converted to katakana from the first katakana separator to the last (next) katakana separator in the character string before conversion, excluding the katakana separator. This converted character string is referred to as a converted character string. For example, “＾ AIUEO / ＾”, which is a character string before conversion, is converted to “Aiueo /” as a character string after conversion.
[0076]
Then, the CPU 20a stores the character string before conversion or the character string after conversion in the RAM 20b in the RAM 20b as a character string before re-conversion, and clears the character string before conversion or the character string after conversion in the RAM 20b (step S511). . In step S511, if there is a character string before correction in the RAM 20b, the character string before correction is updated by adding a new character string thereto.
[0077]
When the character extracted immediately before is not a katakana delimiter (step S507; No), the CPU 20a determines whether or not the delimiter counter in the RAM 20b is 0 (step S512). If the delimiter character counter is 0 (step S512; Yes), the CPU 20a proceeds to step S511 because the character string extracted immediately before is not a part of the alphabet character string indicating the katakana character string. When the delimiter character counter is not 0 (step S512; No), the CPU 20a returns to step S502 because the character extracted immediately before is in the middle of the alphabet character string indicating the katakana character string. If the delimiter is not 2 (step S509; No), the CPU 20a returns to step S502 because the character extracted immediately before in step S502 indicates the middle of the alphabet character string indicating the katakana character string.
[0078]
After execution of step S511, the CPU 20a clears the delimiter counter in the RAM 20b (step S513). Then, the CPU 20a reads the number of characters from the number-of-characters counter in the RAM 20b and stores it in the RAM 20b, clears the number-of-characters counter (step S514), and returns to step S502. The number of characters stored in step S514 is used for specifying the position of the next character in steps S502 and S515.
[0079]
If the number-of-characters counter is equal to or greater than 80 (step S504; Yes), the CPU 20a extracts characters from the disc title in the RAM 20b up to the next katakana delimiter after the character extracted immediately before in step S502 and converts the characters into the RAM 20b before conversion. It is stored as a character string (step S515), and the process proceeds to step S511. However, in step S515, if the character extracted immediately before in step S502 is a katakana delimited character, no more characters are extracted.
[0080]
If the character extracted immediately before is Null (Step S505; Yes), it indicates the end of the disc title, and the CPU 20a sequentially selects one character other than Katakana from the beginning of the character string before re-conversion in the RAM 20b. Is taken out (step S516). The characters other than katakana are all characters other than katakana, and include special characters "/" and katakana delimiter "@". Then, the CPU 20a determines whether or not the character extracted immediately before in step S516 is Null (step S517).
[0081]
If the character extracted immediately before is not null (step S517; No), the CPU 20a stores the character extracted immediately before in step S516 in the RAM 20b as a corrected disc title (step S518). First, when the process goes through step S518, the corrected disc title is stored in the RAM 20b, and thereafter, the immediately preceding character is recorded in the corrected disc title in the RAM 20b. Then, the CPU 20a increments the pre-reconversion character number counter in the RAM 20b by one (step S519), and returns to step S516. If the process first proceeds to step S519, the pre-reconversion character number counter is set to 1 in the RAM 20b. The number of the pre-reconversion character number counter is used to specify the next character in steps S516 and S520.
[0082]
If the character extracted immediately before is Null (step S517; Yes), the next character indicates the beginning of the katakana character or the end of the disc title, so the CPU 20a still extracts the character string from the head of the pre-reconversion character string in the RAM 20b. One of the unexisted katakana characters is extracted (step S520). Then, the CPU 20a determines whether or not the character extracted immediately before in step S520 is Null (step S521).
[0083]
When the character extracted immediately before is not Null (step S521; No), the CPU 20a stores the katakana character extracted immediately before in step S520 as a katakana character string in the RAM 20b (step S522). Then, the CPU 20a increments the pre-reconversion character number counter in the RAM 20b by one (step S523), and returns to step S520.
[0084]
If the character extracted immediately before is Null (step S521; Yes), the CPU 20a converts the katakana character string stored in the RAM 20b stored in step S522 into a character string composed of katakana separated characters and a Roman alphabet. Then, the katakana character string in the RAM 20b is cleared (step S524). In step S524, specifically, the katakana character in the katakana character string is converted into an uppercase alphabet, and the katakana character string is added to the beginning and end of the alphabetic character string. For example, if the katakana character string is “Aiueo”, it is converted to “{AIUEO}”.
[0085]
Then, the CPU 20a stores the character string converted in step S524 in the RAM 20b as a corrected disc title (step S525). If the corrected disc title already exists in the RAM 20b, the character string converted in step S524 is added to the corrected disc title. If the character string is not converted in step S524 (for example, the last character string before reconversion), nothing is stored in step S525.
[0086]
Then, the CPU 20a determines whether or not the character next to the character extracted immediately before from the pre-reconversion character string in step S516 or S520 is Null (step S526). If the next character is not Null (Step S526; No), the CPU 20a returns to Step S516. If the next character is Null (step S526; Yes), it indicates the end of the pre-reconversion character string, and the CPU 20a proceeds to step S51 in FIG.
[0087]
Next, an example of a state transition according to the present embodiment will be described with reference to FIG. FIG. 6 is a state transition diagram of the present embodiment. As shown in {circle around (1)} in FIG. 6, the disc title to be recorded as "1-2; {AIUEO} // 3; ABC // 5-10; {KAKIKUKE} //" has no group management function. If the disc title of the MD50 recorded by the MD recorder records “1-2; {AIUEO // 3; {ABC // 5-10;} KAKIKUKEKO //}”, step S502 in FIG. In each of steps S507, S512, and S511 to S514, "1-2;" which is a portion not sandwiched between katakana delimiters is copied to the character string before re-conversion in the RAM 20b. “1-2; ＾ AIUEO // 3; ＾ ABC // 5-10; ＾ KAKIKUKEKO // ＾” indicates that the group name of a group having track numbers 1 and 2 is “Aioo” and the track number is The group name of the group consisting of three tracks is "ABC", and the group name of the group consisting of tracks having track numbers 5, 6, 7, 8, 9, and 10 is "Kakikukeko", and the position of the katakana delimiter is shifted. This is the title of the disc.
[0088]
Then, as shown in {circle around (2)}, "{AIUEO // 3;}", which is a portion sandwiched between katakana delimiters in steps S502 to S509 and S512 in FIG. 4, is extracted as a character string before conversion. In step SS510, "{AIUEO // 3;}" is converted to "Iueo // 3;" as a converted character string. In steps S511, S513, and S514, "Iueo // 3;" is stored in the RAM 20b. Appended to the character string before reconversion.
[0089]
Then, as shown in (3), in the same manner as in (1), "ABC // 5-10;" which is not interposed between katakana delimiters is added to the character string before re-conversion in the RAM 20b. . Then, as shown in (4), in the same manner as in (2), "{KAKIKUKEKO //}", which is a portion sandwiched between katakana delimiters, is converted to "Kakikuko //" and re-converted in the RAM 20b. Appended to the previous character string.
[0090]
Then, as shown in (5), by the steps S516 to S519 in FIG. 5, "1-2;" which is a character string other than the katakana character in the character string before re-conversion in the RAM 20b is corrected in the RAM 20b. Later it is copied to the disc title. Then, as shown in {circle around (6)}, “Iueo”, which is a katakana character string in the character string before re-conversion in the RAM 20b, is extracted by each of the steps S520 to S523 in FIG. "AIUEO" is added to the corrected disc title in the RAM 20b.
[0091]
As shown in (7), in the same manner as in (5), "// 3; ABC / 5 / 5-10;" which is a character string other than katakana characters in the character string before re-conversion in the RAM 20b is stored in the RAM 20b. It is added to the disc title after correction. Then, as shown in (8), in the same manner as (6), the katakana character string in the character string before re-conversion in the RAM 20b is converted to "{KAKIKUKEKO}" and the corrected disc title in the RAM 20b is converted to "KAKIKUKEKO". It is added. Then, as shown in (9), similarly to (5), "//" which is a character string other than katakana characters in the character string before re-conversion in the RAM 20b is added to the corrected disc title in the RAM 20b. The corrected disc title in which the position of the katakana delimited character has been corrected is stored in the RAM 20b.
[0092]
The MD recorder 1 causes the CPU 20a to execute the group management execution determination process of the present embodiment, triggered by the loading of the MD. When the group management flag in the RAM 20b is 1, various types of group management including displaying the disc title and the group title on the display panel using the disc title or the corrected disc title in the RAM 20b as group information. And various processes such as reproduction and recording of actual MD data can be executed.
[0093]
Further, the corrected disc title is not recorded on the loaded MD. This is to prevent writing on the MD even though the user has not edited and recorded the MD before removing the MD. For example, if the user does not want to make correction, it is to prevent the corrected disc title from being automatically recorded on the loaded MD.
[0094]
After the corrected disc title for the loaded MD is recorded in the RAM 20b, at least one of the disc title, the group title, and the like is used by the user via the operation unit 30 using the corrected disc title. Editing becomes executable. When these edits are executed, the MD recorder 10 records the corrected disc title or the disc title further edited on the loaded MD. This is because the user has accepted the change in the disc title by editing. The timing of recording the corrected disc title or the further edited disc title on the MD may be a configuration during or after editing, a configuration immediately before taking out a loaded MD, or the like. The MD in which the corrected disc title or the further edited disc title is recorded can be subjected to the group management of the MD by any device having a group management function.
[0095]
Therefore, according to the present embodiment, when an MD recorder in which the katakana delimiter position in the disc title including the group information is incorrectly loaded by an MD recorder or the like having no group management function is loaded into the MD, Since the katakana delimiter position of the recorded disc title is corrected, the katakana delimiter position of the disc title including the group information recorded on the MD can be corrected.
[0096]
In addition, the corrected disc title is stored in the RAM 20b as the corrected disc title, and the corrected disc title is not recorded in the loaded MD, so that the disc title in the MD is automatically set against the user's intention. Updating can be prevented. In addition, after the corrected disc title is stored in the RAM 20b, if the user edits the disc title, the corrected disc title or a further edited disc title is recorded on the loaded MD. The disc title in the MD is automatically changed according to the intention, and the group of the MD can be managed by any device having a group management function.
[0097]
In the present embodiment, the post-correction disc title is not written in the MD that requires the position correction of the katakana delimiter of the disc title, but when the disc title of the MD is corrected after the MD is loaded. Alternatively, the correction disc title may be forcibly recorded on the loaded MD. In this case, the recorded MD can be used in another device having a group management function, and the user is not required to perform editing work or operation selection when recording the corrected disc title on the MD. In addition, the operability can be simplified.
[0098]
In addition, when a disc title of the MD is corrected after loading the MD, a selection unit is provided to allow the user to select whether or not to record the corrected disc title on the loaded MD. A configuration may be adopted in which the correction disc title is recorded or not recorded on the MD based on the selection result in the selection unit. The selection unit has, for example, a configuration in which a selection menu is displayed on the display panel unit 40 and is selected by the operation unit 30, but a configuration in which a selection key is newly provided in the operation unit 30 and the like may be realized.
[0099]
Further, in the present embodiment, as an example of the recording medium processing apparatus and the recording medium processing program according to the present invention, a configuration using an MD as a recording medium has been described, but the present invention is not limited to this. For example, the present embodiment can be applied to another rewritable recording medium such as a CD-RW (Compact Disc Rewritable). Further, the present invention is not limited to the configuration using music data as actual data, but may be a configuration using other types of data and program data. In this regard, the present embodiment is not limited to the configuration using the MD recorder 10 as a recording medium processing device, and the present embodiment is also applied to another device that performs at least one of a reproduction process and a recording process of data recorded on a recording medium. it can.
[0100]
As described above, the embodiments of the present invention have been described, but the present invention is not necessarily limited to the above-described means and methods, but may achieve the object of the present invention and have the effects of the present invention. Can be appropriately changed and implemented.
[0101]
【The invention's effect】
According to the present invention, katakana delimited character positions in group information recorded on a recording medium can be corrected.
[Brief description of the drawings]
FIG. 1 is a diagram showing a configuration of an MD recorder 10 according to an embodiment of the present invention.
FIG. 2 is a flowchart illustrating a group management execution determination process.
FIG. 3 is a flowchart showing a group management format check process during the group management execution determination process shown in FIG. 2;
FIG. 4 is a flowchart showing katakana delimited character position correction processing during the group management format check processing shown in FIG. 3;
FIG. 5 is a flowchart showing the continuation of the katakana delimited character position correction process shown in FIG. 4;
FIG. 6 is a state transition diagram according to the embodiment of this invention.
FIG. 7 is a flowchart showing a conventional group management execution determination process.
[Explanation of symbols]
10… MD recorder
11 Turntable
12 Recording head
13 ... Spindle motor
14. Optical pickup
15 ... feed motor
16 RF amplifier
17 ... Head driver
18 Digital signal processing circuit
19 ... Buffer memory
20 ... System controller
20a ... CPU
20b… RAM
20c ROM
21, 22, ... terminals
30 ... operation unit
40 ... Display panel
50 ... MD

Claims (5)

In a data processing device that performs at least one of a reproduction process and a recording process of data recorded on a rewritable recording medium,
The data recorded on the recording medium has real data divided by tracks and management data for managing the real data,
The management data has group information on a group including at least one of the tracks,
The group information is information that can be written in katakana by using katakana delimiters.
A correction unit that corrects the katakana delimiter position of the group information recorded on the recording medium when the recording medium on which the group information with the incorrect katakana delimiter position is recorded is loaded;
A storage unit that stores the group information corrected by the correction unit,
A data processing device comprising: a processing unit that performs at least one of a reproduction process and a recording process of the actual data based on the group information stored in the storage unit. An editing unit for editing the group information stored in the storage unit,
A recording unit that records the group information edited by the editing unit on the loaded recording medium,
2. The data processing according to claim 1, wherein the processing unit performs at least one of a reproduction process and a recording process of the real data based on the group information edited by the editing unit. apparatus. 2. The data processing apparatus according to claim 1, further comprising a recording unit that records the group information stored in the storage unit on the loaded recording medium. A selection unit for selecting whether to overwrite the group information stored in the storage unit with the group information recorded on the loaded recording medium,
2. The data processing according to claim 1, further comprising: a recording unit that records the group information stored in the storage unit on the loaded recording medium when overwriting is selected by the selection unit. apparatus. In a data processing program for realizing a computer mounted on a device that performs at least one of a reproduction process and a recording process of data recorded on a rewritable recording medium,
The data recorded on the recording medium has real data divided by tracks and management data for managing the real data,
The management data has group information on a group including at least one of the tracks,
The group information is information that can be written in katakana by using katakana delimiters.
To the computer,
A function of correcting a katakana delimiter position of the group information recorded on the recording medium when a recording medium on which the group information in which the position of the katakana delimiter is incorrect is recorded is loaded;
A function of storing the corrected group information,
A function of reproducing the actual data based on the stored group information;
Data processing program for realizing.

Images