JP4106424B2 - Data processing apparatus and data processing program - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a data processing apparatus and a data processing program.
[0002]
[Prior art]
Conventionally, actual data such as music data is recorded on a recording medium such as MD (Mini Disc) or CD-RW (Compact Disc ReWritable) which is a rewritable optical disc as a recording medium, and the actual data is reproduced or already recorded. In addition, there is an optical disk device that performs processing such as rewriting of actual data.
[0003]
Data recorded on the optical disk is recorded by the magnetization of the magnetic film. That is, when the magnetic film of the optical disk is heated above the Curie point by a laser spot by an optical pickup device, a magnetic field that is reversed according to data is applied thereto, and then cooled, data is recorded on the magnetic film as a change in magnetization direction. Such recording can also be performed on a portion where data has already been recorded. As a result, data can be overwritten on the optical disk.
[0004]
Here, the case where music information is recorded on MD as real data is demonstrated. Actual data is recorded, reproduced and managed based on a unit called a track. In the 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 by the unique information of the MD, UTOC (User's Table Of Contents) that can be rewritten by the user, and the like. In the UTOC, track information about a track recorded on the MD and name information about the MD and each track are recorded. Among them, 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, it is possible to easily manage the MD and each track thereof 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.
[0006]
In recent years, a device that allows a user to freely group a plurality (or one) of tracks and records and manages information of the group in the UTOC has been implemented. (For example, refer to 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, if the disc title is “DT1”, the track numbers are N1 to N2, and N3 to N4 are each grouped and the group names are “GT1” and “GT2”, the disc title of the MD 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 indicate the beginning and end of a character or character string in an easy-to-understand manner, and is not actually used. The same applies to the following problems of the present invention, embodiments of the present invention, and the like.
[0009]
Since the MD recording / playback apparatus includes both a device having a group management function and a device having no group management function, a disc can be recorded in order to record a group title as group information in the MD with a device having no group management function. When editing the title, it is necessary to input and record the group title according to the above rules. In addition, 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 to perform group management.
[0010]
Here, with reference to FIG. 7, a conventional group management execution determination process executed in an MD recording / playback apparatus having a group management function will be described. 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 or not reading of the TOC information is started from the area where the TOC information of the MD loaded in the MD recording / reproducing apparatus is recorded ( Step S81). When reading of the TOC information has not been started (step S81; No), the control unit returns to step S81.
[0011]
When reading of the TOC information is started (step S81; Yes), the control unit determines whether or not reading of the TOC information is completed (step S82). When the reading of the TOC information is not completed (step S82; No), the control unit returns to step S82. When 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 or not reading of the disc title has been completed (step S83). When reading of the disc title is not completed (step S83; No), the control unit returns to step S83.
[0012]
When reading of the disc title is completed (step S83; No), the control unit indicates that the character after the group range is “;” and the character after the group title is “//” in the read disc title. It is determined whether or not (step S84). In step S84, specifically, it is determined whether or not a combination of “;” and “//” exists for all the groups and is in a proper position in accordance with the above rule.
[0013]
When a combination of “;” and “//” exists for each group and is in place (step S84; Yes), the control unit sets the group management flag to 1 in the RAM provided in the MD recording / playback apparatus. (Step S85), and the group management execution determination process ends. When the combination of “;” and “//” exists for each group and is not in place (step S84; No), the control unit sets the group management flag to 0 in the RAM provided in the MD recording / playback apparatus. (Step S86), and the group management execution determination process ends.
[0014]
When the group management flag stored in the RAM is 1, the MD recording / playback apparatus having the group management function determines that the 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 other than the group management are executed.
[0015]
In addition, MD recording / playback apparatuses that can use not only alphabets but also katakana for disc titles are also being implemented. For example, if the disc title is registered as “Iueo” and the group title is registered as “Kakikukeko”, “0; ^ AIUEO ^ // 1; ^ KAKIKUKEKO ^ //” is used for the MD disc title recording area. Is recorded. In this way, katakana characters are written in Roman letters with an uppercase alphabet. The Katakana distinguishing character “^” is a special character and is added to the beginning and the end of the alphabet character string indicating the Katakana character string. In an MD recording / playback apparatus having a group management function, when a user inputs each title in katakana, the disc title is automatically recorded on the MD in the above format.
[0016]
[Patent Document 1]
JP 2002-150749 A
[0017]
[Problems to be solved by the invention]
However, in the conventional optical disc apparatus, there is a case where the group information cannot be recognized when kana is used for the disc title. Specifically, in an MD recording / playback apparatus having no group management function, when a user inputs a disc title using katakana, the position of the katakana distinguishing character becomes indefinite. For example, if “Iueo” is entered for the disc title and “Kakikukeko” is entered for the group title, “0; ^ AIUEO // 1; KAKIKUKEKO // ^” etc. will be displayed in the MD disc title recording area. Recorded automatically.
[0018]
In this way, when using an MD in which the position of the katakana delimiter character in the disc title is recorded indefinitely, in the group management execution determination process shown in FIG. It is determined that there is a combination of “/” and it is not in place, and the process proceeds to step S86. This is because “//” between katakana delimiters is not recognized as a special character “//” indicating the end of the description of the group title (and disc title). In that case, it is not recognized as group management, for example, all the character strings of “0; ^ AIUEO // 1; KAKIKUKEKO // ^” are recognized as the disc title as it is written, as in the above format. . Similarly, the character string “1-2; ^ AIUEO ^ // 3; ABC // 5-10; ^ KAKIKUKEKO ^ //” is, for example, “1-2; The position of the katakana delimiter was undefined, such as ^ AIUEO // 3; ^ ABC // 5-10; ^ KAKIKUKEKO // ^ ", and was recorded on the MD.
[0019]
An object of the present invention is to correct a katakana delimiter character position in group information recorded on a recording medium.
[0020]
[Means for Solving the Problems]
The present invention relates to a data processing apparatus that performs at least one of reproduction processing and recording processing of data recorded on a rewritable recording medium.
The data recorded on the recording medium includes actual data divided by tracks and management data for managing the actual data,
The management data includes group information relating to a group consisting of at least one track,
The group information is information that can be expressed in katakana with katakana delimiters.
By devices that have a katakana input function and no group management function based on group information When a recording medium on which group information is recorded is loaded , It is determined whether or not there is a group delimiter between the pair of katakana delimiters of the group information, and when there is the group delimiter, Katakana separator character position Before the group separator A correction unit to correct,
A storage unit for storing group information corrected by the correction unit;
And a processing unit that performs at least one of reproduction processing and recording processing of the actual data based on the group information stored in the storage unit.
[0021]
Furthermore, the present invention provides an editing unit that edits group information stored in the storage unit;
A recording unit for recording the group information edited by the editing unit on the loaded recording medium;
The processing unit preferably includes performing 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, the present invention provides a selection unit for selecting whether or not to overwrite the group information stored in the storage means to the group information recorded on the loaded recording medium, and overwriting by the selection unit When selected, it preferably includes a recording unit that records group information stored in the storage unit on the loaded recording medium.
[0024]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below 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 in the present embodiment.
[0025]
In an embodiment of the present invention, an MD recorder 10 capable of recording and reproducing an MD50, which is a magneto-optical recording medium for recording and reproduction, includes a turntable 11 on which the MD50 can be loaded, a recording head 12 that magnetically records the MD50, A spindle motor 13 that supplies the rotational power of the turntable 11, an optical pickup 14 that reproduces and records information on the information recording surface of the MD 50 by semiconductor laser light, and a feed that moves the optical pickup 14 in the radial direction of the disk of the MD 50 A motor 15, an RF amplifier 16 that electrically converts a signal read from the MD 50 or information to be recorded on the MD 50, a head driver 17 that controls the movement of the recording head 12, and a digital signal circuit 18 that performs various digital signal processing; Buffer memo of data used in various processes of 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 an ADIP (ADres In Pre-groove on Recordable Disc) decoder that decodes an address recorded in the MD 50 that can be recorded and reproduced, and EFM (Eight to Fourteen Modulation) that is a signal modulation method. EFM / CIRC encoder / decoder that adds CIRC (Cross Interleave Read-Solomon Coding) for error code correction, memory controller that saves data to buffer memory 19 for earthquake resistance, and data compression / expansion adapted to human auditory characteristics An ATRAC (Acoustic Transferred Adapted Coding) encoder decoder, and a servo control circuit for performing server control on the rotation of the MD 50, information reproduction, information recording, and the like.
[0027]
The digital signal processing circuit 18 is connected to the D / A converter at the terminal 21 and is connected to the A / D converter at the terminal 22. In addition, the system controller 20 is connected to an operation unit 30 that is connected by an infrared communication method or the like and receives a user's information operation input, and a display panel 40 that displays information to the user.
[0028]
The system controller 20 includes a central processing unit (CPU) 20a that centrally controls each unit of the MD recorder 10, a built-in RAM (Random Access Memory) 20b that temporarily stores various types of information, and a built-in type that stores various types of information. Each part is connected by a bus, and the bus is connected to the digital signal processing circuit 18, the operation part 30, and the display panel part 40 by a connection part (not shown). Specifically, the ROM 20c stores various application programs that control the operation of the MD recorder 10, data used by the application programs, and the like. The CPU 2a reads various application programs stored in the ROM 20c, expands data in the RAM 20b, executes the application programs, and centrally controls each unit.
[0029]
More specifically, the CPU 20a reads a group management execution determination process program stored in the ROM 20c and executes the group management execution determination process. When the group management execution determination process is executed, the CPU 20a reads the TOC information recorded in the MD 50 and the disc title in the TOC information, and when the katakana delimiter character position of the group title in the read disc title is incorrect, The position is corrected and stored in the RAM 20b as a corrected disc title, and a group management flag indicating whether or not group management is possible using the disc title or the corrected disc title is set in the RAM 20b (FIG. 2 to FIG. 2). 5).
[0030]
The correction unit described in the claims of the present invention is, for example, the CPU 20a that executes step S50 shown in FIG. 3 of the present embodiment, as realized by the cooperation of the program and the CPU. Similarly, the storage unit described in the claims is, for example, the RAM 20b of the present embodiment. Similarly, 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, 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 MD 50 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. Similarly, 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, the buffer of the present embodiment. Memory 19 and system controller 20.
[0032]
The operation unit 30 includes various operation keys for instructing recording, playback, stop, erase, and the like, and input keys for various symbols, alphabets, and katakana. When the various keys are pressed, a corresponding operation signal is generated to generate a system controller. 20 is output. 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 accommodated in the cartridge, and the shutter mechanism provided in the cartridge is opened and closed at the time of recording or reproduction, thereby irradiating the laser beam from the optical pickup 14 or applying the magnetic field from the magnetic head 12. It is configured to be able to.
[0034]
The MD 50 is mounted on the turntable 11 and is rotationally controlled by the spindle motor 13 so that the linear velocity is constant (CLV: Constant Liner Velocity). In addition, the MD 50 in the MD recorder 10 is detected by using a mechanical switch, a photo interrupter, or the like for detecting whether or not the MD 50 is attached or not (loading presence / absence) or the reflected light of the laser light from the optical pickup 14. An undetected disk detector is provided.
[0035]
The optical pickup 14 is provided at a position facing the magnetic head 12 across the loaded MD 50. The optical pickup 14 includes an objective lens (not shown), a biaxial mechanism, a semiconductor laser light source, and a light receiving portion that reflects light emitted from the semiconductor laser light source on the surface of the magneto-optical disk and receives the reflected light. In addition, a focusing coil for moving the objective lens for servo control and a tracking coil are provided.
[0036]
The reflected light information detected by the light receiving unit in the optical pickup 14 is supplied to the RF amplifier 16, amplified by current / voltage conversion, and then subjected to matrix calculation processing to produce a focus error signal FE for focus servo. A tracking error signal TE for tracking servo is generated and an RF signal is also generated.
[0037]
The focus error signal FE and tracking error signal TE generated by the RF amplifier 16 are subjected to phase compensation, gain adjustment, and the like by the servo control circuit in the digital signal processing circuit 18 and then the two-axis mechanism via the drive amplifier. 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 by the EFM / CIRC encoder / decoder in the digital signal processing circuit 18 and demodulated by EFM, and subjected to CIRC error correction processing. It is supplied to the memory controller in the processing circuit 18.
[0039]
Here, the reproducing operation of information in the MD 50 in the MD recorder 10 will be described. The MD50 has a tracking groove meandering at a predetermined frequency in advance to record address data, and the address data in the reproduced RF signal is sent to the CLV control signal by the 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 MD50 disk based on the binarized EFM signal or the CLV control signal, thereby generating the digital signal processing circuit 18. Is applied to the spindle motor 13 via the servo control circuit built in the CLV and is subjected to CLV control.
[0040]
Further, the EFM / CIRC encoder / decoder controls the phase-locked loop pull-in operation based on the binarized EFM signal to generate a reproduction clock for decoding processing. Further, the binarized data after error correction is written into 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 out from the buffer memory 19 at a transfer rate sufficiently slower than the write transfer rate, and outputs it as audio data. Since the memory controller temporarily stores the data in the buffer memory 19 and outputs it 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 at which the track jump occurs, continuous output of continuous sound can be realized as the audio output sound.
[0041]
Also, the audio data read from the buffer memory 19 by the memory controller is decompressed by the ATRAC decoder in the digital signal processing circuit 18 to become digital audio data, and is sent to a D / A converter (not shown) via the terminal 21. Applied. The D / A converter converts audio digital data into an analog audio signal, which is supplied to a reproduction output system such as an amplifier, a speaker, or a headphone (not shown), and is output as reproduction audio.
[0042]
During such a reproduction operation, the system controller 20 transfers various servo commands to the servo control circuit according to the operation of the operation unit 30, or gives a control command for the buffer memory 19 to the memory controller. The display panel 40 is controlled to display the character information such as the elapsed performance time and the title of the track (song) being played, the spindle servo control is performed by the EFM / CIRC encoder decoder, and the decoding process is controlled. .
[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 the digital signal processing circuit 18 via a terminal 22. Is done.
[0044]
The digital audio data is input to the 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 compressed digital audio data stored in the buffer memory 19 has been stored, and permits reading from the buffer memory 19. The compressed data read from the buffer memory 13 by the permission is subjected to processing such as CIRC error correction code addition and EFM modulation by an EFM / CIRC encoder decoder and supplied to the head driver 17.
[0045]
The head driver 17 drives the N pole or S pole of the recording head 12 by applying a magnetic field in accordance with the data supplied from the EFM / CIRC encoder decoder. At the time of recording in which such magnetic field application is performed, the system controller 20 controls the output power of a semiconductor laser (not shown) of the optical pickup 14 to be higher than that at the time of reproduction to heat the surface of the magneto-optical disk to the Curie temperature. Like that. Thereby, the magnetic field information applied from the recording head 12 is fixed to the information recording surface of the MD 50, and data is recorded as magnetic field information.
[0046]
When recording information, the system controller 20 transfers various servo commands to the servo control circuit, gives a command to control the buffer memory 19 to the memory controller, records elapsed time, The display panel unit 40 is controlled to display the track number and the like of the recorded program, and the spindle servo control and the encoding process control are performed by the EFM / CIRC encoder decoder.
[0047]
The MD recorder 10 can record TOC information, which is management data corresponding to each track of the audio data and the entire disk, in addition to the audio data as actual data. The UTOC, which is rewritable information in the TOC information, is input from the user via the operation unit 30.
[0048]
The TOC information includes information that cannot be rewritten by the unique information of the MD 50 and UTOC that can be rewritten by the user. In the UTOC, track information about a track 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 songs) of all tracks identified by the track number, fragmentation information of a plurality of tracks, and the like. The name information includes the disc title, the start and end addresses of each track, the track title (for example, song title), the recording date / time / date / minute / second of each song, etc. for the MD. With this UTOC, it is possible to easily manage the MD and each track thereof 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 prior art, the MD recorder 10 has a function capable of recognizing each group and managing the group by adding a group title to the MD UTOC disc title to form group information. To do. The MD recorder 10 can also use katakana for the group title, the operation unit 30 can input katakana in addition to various numbers and alphabets, and the display panel unit 40 can display those characters. It is.
[0050]
Next, the program execution operation of the MD recorder 10 will be described with reference to FIGS. FIG. 2 is a flowchart showing group management execution determination processing, FIG. 3 is a flowchart showing group management format check processing during group management execution determination processing shown in FIG. 2, and FIG. 4 is a group shown in FIG. FIG. 5 is a flowchart showing a katakana delimiter character position correction process during the management format check process, and FIG. 5 is a flowchart showing a continuation of the katakana delimiter character position correction process shown in FIG.
[0051]
First, referring to FIG. 2, group management execution determination processing for determining whether group information is recorded for the MD 50 loaded in the MD recorder 10 and group management can be executed for the MD 50. explain. In the system controller 20, the CPU 20 a reads out the group management execution determination processing program from the ROM 20 c and develops it in the RAM 20 b, triggered by the fact that the MD detector 10 has been loaded by the disc detection unit (not shown). Then, the group management execution determination process is executed.
[0052]
When the MD 50 is loaded in the MD recorder 10, the CPU 20a reads the TOC information from the TOC area in which the TOC information of the information recording surface of the MD 50 loaded in the MD recorder 10 by the information reproducing system such as the optical pickup 14 is stored. Is read and stored in the RAM 20b. First, the CPU 20a determines whether or not reading of TOC information has started (step S1). When reading of the TOC information has not started (step S1; No), the CPU 20a returns to step S1.
[0053]
When reading of the TOC information is started (step S1; Yes), the CPU 20a determines whether or not reading of the TOC information is completed (step S2). When reading of the TOC information is not completed (step S2; No), the CPU 20a returns to step S2. When 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 or not reading of the disc title has been completed (step S3). When reading of the disc title has not been completed (step S3; No), the CPU 20a returns to step S3.
[0054]
When reading of the disc title is completed (step S3; No), the CPU 20a checks whether or not the disc title stored in the RAM 20b is in a group manageable format. In some cases, a group management format check process is performed in which the disc title is corrected to a format that allows group management and stored in the RAM 20b (step S4). The correction to a format that can be managed by a group is specifically correction of the position of a katakana delimiter in a disc title including group information.
[0055]
Then, the CPU 20a can perform group management by referring to the disc title stored in the RAM 20b in step S3 when there is no corrected disc title corrected in step S4 and stored in the RAM 20b. Whether or not (step S5). In step S5, for example, each group title Is described in the following order: group start track number N1, special symbol "-", group end track number N2, special symbol ";", formal group title string, special symbol "//" It is determined whether or not all group titles are present.
[0056]
The official group title includes the alphabet and various symbol parts as they are, and the katakana character string is preceded by the katakana distinguishing character “^” at the beginning and end, and the katakana is capitalized. It shall be written in romaji. For example, when the group title of a certain group is “K eye way”, it is determined whether or not “N1-N2; K ^ AIUEO ^ //” is described. Also, one track can belong to one group. For example, when only a track number N1 belongs to a certain group, “N1; ^ AIUEO ^ //” is described. Further, it is not necessary to attach a group title to the group. In this case, “N1-N2; //” is described, and both are determined as a description format that can be managed by the group.
[0057]
As one of the description formats other than these, for example, the description “N1-N2; K ^ AIUEO // ^” recorded by the MD recorder without the group management function as described in the problem of the present invention is in step S4. , “N1-N2; K ^ AIUEO ^ //” is corrected, and it is not particularly necessary to consider whether “//” is sandwiched between katakana delimiters.
[0058]
In addition, the number of characters in the alphabet string that indicates the katakana character string between the “^” and “^” characters is defined to be less than 80 characters including the katakana character. In some cases, it is also set that it is not converted to katakana. Therefore, in step S4, even when the number of characters between the katakana delimiters is 80 characters or more and is not corrected, it is not considered whether “//” is sandwiched between the katakana delimiters. Also good.
[0059]
When 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 the group management flag to 0, 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 process in step S4 shown in FIG. 2 will be described with reference to FIG. When reading of the disc title is completed (step S3; No), the CPU 20a starts executing the group management format check process. First, the CPU 20a counts the total number of characters in the disc title in the RAM 20b (step S41). In step S41, the CPU 20a determines whether or not the counted number of characters is 4 or more (step S42). This is because the description of the group information requires at least four characters such as the track number, “;” and “//”.
[0061]
When it is not four characters or more (step S42; No), CPU20a complete | finishes a group management format check process, and progresses to step S5. This is because there is no possibility of description of group information in the disc title and no correction is necessary. If it is longer than 4 characters (step S42; Yes), there is a possibility that the group information is described in the disc title, and the CPU 20a checks all the katakana delimiters “^” in the disc title in the RAM 20b (step). S43).
[0062]
Then, the CPU 20a determines whether or not 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 the correction is not necessary. Therefore, the CPU 20a ends the group management format check process, and step S5 in FIG. Proceed to
[0063]
If there is a katakana delimiter character (step S44; Yes), the CPU 20a moves the reference position to the next katakana delimiter character position and clears the delimiter character position counter stored in the RAM 20b (step S45). The delimiter character position counter is a counter for the number of characters from a katakana delimiter character indicating the start of katakana to the next katakana delimiter character. Then, the CPU 20a determines whether or not the delimiter character position counter in the RAM 20b is 80 or more (step S46). When the delimiter character position counter is 80 or more, the alphabet character string indicating the katakana character string is not converted to katakana.
[0064]
If the delimiter character position counter is not 80 or more (step S46; No), the CPU 20a extracts one character that has not been extracted in order 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). Step S48 detects a katakana delimiter character indicating the end of the katakana character string.
[0065]
If it 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 or not it is “//” indicating a group delimiter depending on whether the character extracted immediately before is “/” and the character extracted immediately before is “/”. If it is a group break (step S49; Yes), the CPU 20a executes a katakana break character position correction process for correcting a katakana break character position at an incorrect position in the disc title (step S50). The katakana delimiter character position correction process will be described in detail later.
[0066]
Then, the CPU 20a stores the corrected character string created in step S50 in the RAM 20b as a disc title with the group information corrected (step S51), and the CPU 20a ends the group management format check process and proceeds to step S5. . If it is not a group break (step S49; No), the CPU 20a increments the break character position counter in the RAM 20b by 1 (step S52) and returns to step S46.
[0067]
If the delimiter character position counter is 80 or more (step S46; Yes), the katakana character string is not subject to katakana conversion, and the CPU 20a has a katakana delimiter character 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 it is a katakana delimiter (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 process and proceeds to step S5 in FIG.
[0069]
Here, the katakana delimiter character position correction process in step S50 shown in FIG. 3 will be described with reference to FIGS. If it is a group break (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 discriminates whether or not the disc title is within the permitted normal capacity. In actuality, 1792 bytes is the maximum allowable value of the total capacity of the disc title + track title, and here, for the sake of simplicity, shows a case where there is no track title and there are 0 bytes. 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, and the CPU 20a ends the group management format check process in FIG. 3, and proceeds to step S5 in FIG.
[0071]
If it is not 1792 bytes or more (step S501; No), the disc title capacity is in the normal range, and the CPU 20a takes out one character that has not been taken out in order 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). When passing 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 “^” to “^” Katakana delimiter character positions.
[0072]
Then, the CPU 20a determines whether or not the character number counter is 80 or more (step S504). When the character number 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 or not the character extracted immediately before exists or does not exist). 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 for katakana conversion (step S506). If the character string before conversion already exists in the RAM 20b, the character currently taken out 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]
When the character taken out immediately before is a katakana delimiter (step S507; Yes), the CPU 20a increments the delimiter counter stored in the RAM 20b (step S508). When passing through step S508 for the first time, the delimiter character counter is set to 1 and stored in the RAM 20b. The delimiter character counter is for counting 1 indicating the start and 2 indicating the end of the alphabet character string indicating the katakana character string with respect to the number of katakana delimiters.
[0075]
Then, the CPU 20a determines whether or not the delimiter character counter in the RAM 20b is 2 (step S509). If the delimiter character counter is 2 (step S509; Yes), since the character extracted immediately before in step S502 indicates the end of the alphabet character string indicating the katakana character string, the CPU 20a displays the pre-conversion character string in the RAM 20b. The character string is converted into a katakana character and the converted character string is set as a converted character string (step S510). More specifically, step S510 converts only the Roman alphabet into katakana, excluding the katakana delimiters from the first katakana delimiter to the last (next) katakana delimiter in the pre-conversion character string. This converted character string is used as a converted character string. For example, “^ AIUEO / ^”, which is a pre-conversion character string, is converted to “Iueo /” as a post-conversion character string.
[0076]
Then, the CPU 20a stores the pre-conversion character string or the post-conversion character string in the RAM 20b as a pre-conversion character string in the RAM 20b, and clears the pre-conversion character string or the post-conversion character string 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 taken out 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), since the character string extracted immediately before is not part of the alphabet character string indicating the katakana character string, the CPU 20a proceeds to step S511. If 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. When the delimiter character counter is not 2 (step S509; No), the CPU 20a returns to step S502 because the character extracted immediately before in step S502 shows the middle of the alphabet character string indicating the katakana character string.
[0078]
After execution of step S511, the CPU 20a clears the separator character counter in the RAM 20b (step S513). Then, the CPU 20a reads the number of characters from the character number counter in the RAM 20b and stores it in the RAM 20b, clears the character number counter (step S514), and returns to step S502. The number of characters stored in step S514 is used to specify the position of the next character in steps S502 and S515.
[0079]
When the character counter is 80 or more (step S504; Yes), the CPU 20a extracts characters from the disc title in the RAM 20b up to the next katakana delimiter character after the character extracted immediately before in step S502, and before conversion to the RAM 20b. Stored as a character string (step S515), the process proceeds to step S511. However, step S515 does not extract any more characters if the character extracted immediately before in step S502 is a katakana delimiter.
[0080]
If the character extracted immediately before is Null (step S505; Yes), the end of the disc title is indicated, so the CPU 20a has not yet extracted one character other than katakana in order from the beginning of the pre-reconversion character string in the RAM 20b. Is taken out (step S516). Characters other than katakana are all characters other than katakana, including the special symbol “/” and the katakana separator “^”. Then, the CPU 20a determines whether or not the character extracted immediately before in step S516 is Null (step S517).
[0081]
When 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). When first passing through step S518, the corrected disc title is stored in the RAM 20b, and thereafter, the character taken out immediately before 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. When first passing through step S519, the pre-reconversion character number counter is set to 1 in the RAM 20b. The number in 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 before reconversion in the RAM 20b in order from the beginning. One uncharacterized katakana character 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]
If 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]
When the character extracted immediately before is Null (step S521; Yes), the CPU 20a converts the katakana character string in the RAM 20b stored in step S522 into a character string made up of katakana division characters and Roman alphabets. Then, the katakana character string in the RAM 20b is cleared (step S524). Specifically, the step S524 converts the katakana characters in the katakana character string into an uppercase alphabet, and adds the katakana character string to the beginning and end of the alphabetic character string. For example, when the katakana character string is “Aiueo”, it is converted to “^ AIUEO ^”.
[0085]
Then, the CPU 20a stores the character string converted in step S524 as a corrected disc title in the RAM 20b (step S525). If there is already a corrected disc title in the RAM 20b, the character string converted in step S524 is added to the corrected disc title. If it is not converted in step S524 (for example, the last character string before re-conversion), 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 character string before reconversion in Step S516 or S520 is Null (Step S526). When the next character is not Null (step S526; No), the CPU 20a returns to step S516. When the next character is Null (step S526; Yes), the CPU 20a proceeds to step S51 in FIG. 3 because it indicates the end of the character string before re-conversion.
[0087]
Next, an example of state transition of the present embodiment will be described with reference to FIG. FIG. 6 is a state transition diagram of the present embodiment. As shown in (1) in Fig. 6, the disc title that should be recorded as "1-2; ^ AIUEO ^ // 3; ABC // 5-10; ^ KAKIKUKEKO ^ //" has no group management function. When the disc title of MD50 recorded by the MD recorder is recorded as “1-2; ^ AIUEO // 3; ^ ABC // 5-10; ^ KAKIKUKEKO // ^”, step S502 in FIG. Through steps S507, S512, and S511 to S514, “1-2;”, which is not sandwiched between katakana delimiters, is copied to the pre-reconversion character string in the RAM 20b. “1-2; ^ AIUEO // 3; ^ ABC // 5-10; ^ KAKIKUKEKO // ^” is the group name of the group consisting of tracks with track numbers 1 and 2, and the track number is The group name of the group of 3 tracks is “ABC” and the group name of the group of track numbers 5, 6, 7, 8, 9, 10 is “Kakikukeko”, and the katakana delimiters are misaligned. Disc title.
[0088]
Then, as shown in (2), “^ AIUEO // 3; ^”, which is the portion between the katakana delimiters by steps S502 to S509 and S512 of FIG. In step SS510, “^ AIUEO // 3; ^” is converted into “Iueo // 3;” as a converted character string, and in steps S511, S513, and S514, “Iueo // 3;” is stored in the RAM 20b. It is added 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 sandwiched between katakana delimiters, is added to the pre-reconversion character string in the RAM 20b. . And as shown in (4), in the same way as in (2), “^ KAKIKUKEKO // ^”, which is the part between the katakana delimiters, is converted to “Kakikukeko //” and reconverted in the RAM 20b. Added to the previous character string.
[0090]
Then, as shown in (5), by the steps S516 to S519 in FIG. 5, the character string “1-2;” other than the katakana characters in the character string before reconversion in the RAM 20b is corrected in the RAM 20b. Later copied to the disc title. Then, as shown in (6), “aiueo”, which is a katakana character string in the character string before reconversion in the RAM 20b, is extracted by steps S520 to S523 in FIG. "AIUEO ^" and added to the corrected disc title in the RAM 20b.
[0091]
Then, as shown in (7), in the same manner as in (5), “// 3; ABC // 5-10;” which is a character string other than katakana characters in the character string before reconversion in the RAM 20b is stored in the RAM 20b. Added to the corrected disc title. Then, as shown in (8), in the same manner as in (6), “Kakikukeko”, which is a katakana character string in the character string before reconversion in the RAM 20b, is converted to “^ KAKIKUKEKO ^” and becomes a corrected disc title in the RAM 20b It is added. Then, as shown in (9), in the same manner as in (5), “//”, which is a character string other than katakana characters in the character string before reconversion 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 delimiter is corrected is stored in the RAM 20b.
[0092]
The MD recorder 1 uses the loading of the MD as a trigger, and the CPU 20a executes the group management execution determination process of the present embodiment. When the group management flag in the RAM 20b is 1, various group management including displaying the disc title and the group title on the display panel unit using the disc title in the RAM 20b or the corrected disc title as group information. It is possible to execute various processes such as reproduction and recording of actual MD data.
[0093]
Also, the corrected disc title is not recorded on the loaded MD. This is to prevent writing in the MD even if the user has not edited or recorded the recording before the MD is taken out. For example, this is to prevent the corrected disc title from being automatically recorded on the MD loaded when the user does not want to make correction.
[0094]
Further, 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 using the corrected disc title through the operation unit 30 by the user's operation. Editing can be performed. When these edits are executed, the MD recorder 10 records the corrected disc title or a disc title further edited on the MD loaded therein. This is because the user approves the change of the disc title through editing work. 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 the loaded MD, or the like. An MD on which a corrected disc title or a disc title that has been further edited is recorded can perform group management of the MD with any device having a group management function.
[0095]
Therefore, according to this embodiment, when an MD in which the Katakana delimiter character position in the disc title including the group information is erroneously recorded is loaded by an MD recorder having no group management function or the like, Since the katakana delimiter character position of the recorded disc title is corrected, the katakana delimiter character position of the disc title including the group information recorded in the MD can be corrected.
[0096]
In addition, the corrected disc title is stored in the RAM 20b as a corrected disc title, and the corrected disc title is not recorded on the loaded MD, so that the disc title in the MD is automatically selected against the user's intention. It is possible to prevent updating. In addition, after the corrected disc title is stored in the RAM 20b, when the disc title is edited by the user, the corrected disc title or the disc title further edited 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 corrected disc title is not written in the MD that requires correction of the position of the katakana delimiter in the disc title. However, when the disc title of the MD is corrected after the MD is loaded. The correction disc title may be forcibly recorded on the loaded MD. In this case, the recorded MD can be used by 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. The operability can be simplified.
[0098]
In addition, when the disc title of the MD is corrected after the MD is loaded, a selection unit is provided that allows the user to select whether or not to record the corrected disc title in the loaded MD. A configuration may be adopted in which the corrected disc title is recorded or not recorded in the MD based on the selection result in the selection unit. For example, the selection unit has a configuration in which a selection menu is displayed on the display panel unit 40 and is selected by the operation unit 30. However, a configuration in which a selection key is newly provided in the operation unit 30 may be realized.
[0099]
Moreover, although this Embodiment demonstrated the structure which uses MD as a recording medium as an example of the recording medium processing apparatus and recording medium processing program which concern on this invention, it is not limited to this. For example, the present embodiment can be applied to other rewritable recording media such as CD-RW (Compact Disc ReWritable). Moreover, it is not limited to the structure using music data as real data, The structure using the data of another kind and data of a program may be sufficient. In this regard, the present embodiment is not limited to the configuration using the MD recorder 10 as a recording medium processing apparatus, and the present embodiment is also applied to other apparatuses that perform at least one of reproduction processing and recording processing of data recorded on the recording medium. it can.
[0100]
As described above, the embodiments of the present invention have been described. However, the present invention is not necessarily limited only to the above-described means and methods, and within the scope of achieving the object of the present invention and having the effects of the present invention. It is possible to make changes as appropriate.
[0101]
【The invention's effect】
According to the present invention, the katakana delimiter character position in the group information recorded on the 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 showing group management execution determination processing;
FIG. 3 is a flowchart showing a group management format check process during the group management execution determination process shown in FIG. 2;
4 is a flowchart showing katakana delimiter character position correction processing during the group management format check processing shown in FIG. 3;
FIG. 5 is a flowchart showing a continuation of the katakana delimiter character position correction process shown in FIG. 4;
FIG. 6 is a state transition diagram according to the embodiment of the present invention.
FIG. 7 is a flowchart showing conventional group management execution determination processing;
[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 apparatus that performs at least one of reproduction processing and recording processing of data recorded on a rewritable recording medium,
The data recorded on the recording medium includes actual data divided by tracks and management data for managing the actual data,
The management data includes group information relating to a group consisting of at least one track,
The group information is information that can be expressed in katakana with katakana delimiters.
When a recording medium on which group information is recorded by a device that has a katakana input function and does not have a group management function based on group information, a group delimiter character is inserted between the pair of katakana delimiters of the group information. Determining whether or not there is, and when there is the group delimiter, a correction unit that arranges and corrects the katakana delimiter character position on the back side of the pair before the group delimiter , and
A storage unit for storing group information corrected by the correction unit;
A data processing apparatus 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 group information stored in the storage unit;
A recording unit for recording the group information edited by the editing unit on the loaded recording medium;
The data processing according to claim 1, wherein the processing unit includes performing 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. apparatus. 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 or not to overwrite the group information stored in the storage unit to the group information recorded on the loaded recording medium;
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 the selection unit selects to overwrite. apparatus. In a data processing program for causing a computer mounted on a device that performs at least one of reproduction processing and recording processing of data recorded in a rewritable recording medium,
The data recorded on the recording medium includes actual data divided by tracks and management data for managing the actual data,
The management data includes group information relating to a group consisting of at least one track,
The group information is information that can be expressed in katakana with katakana delimiters.
In the computer,
When a recording medium on which group information is recorded by a device that has a katakana input function and does not have a group management function based on group information, a group delimiter character is inserted between the pair of katakana delimiters of the group information. Determining whether or not there is, and when there is the group delimiter character, a function of arranging and correcting the katakana delimiter character position of the rear side of the pair in front of the group delimiter character ;
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