JPH1079189A - Character-inputting system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To input and edit the disk name or track name of a mini disk by using a personal computer and, at the same time, to easily input and edit the name by using Katakana (Japanese syllabary). SOLUTION: A mini disk recording/reproducing device 100 is connected to a personal computer 101 through a serial interface 50 and a name list 54 containing character information to be recorded on a U-TOC is provided. When character information is inputted from a keyboard 106 by using Romaji, the character information is stored on the name list 54 after prescribed codes are respectively added to the front and rear sides of the Romaji by means of a code converting section 58. The information on the list 54 is displayed on a display after the information is converted into Katakana by means of another code converting section 55.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a system including a mini disc recording / reproducing apparatus and a personal computer for editing album and song titles recorded on the mini disc using a keyboard. The present invention relates to a character input system suitable for use when performing a character input.

[0002]

2. Description of the Related Art For example, a diameter 64 stored in a cartridge.
2. Description of the Related Art A mini disc recording / reproducing apparatus is known which compresses a digital audio signal on a magneto-optical disc (or optical disc) of mm to record / reproduce. Minidisc uses ATARAC (Adaptive Transform Acoustic)
Coding), the information amount is reduced to about 1/5
Compressed. Therefore, up to 74 minutes of audio data can be recorded / reproduced on a disk having a diameter of 64 mm.

Further, in such a mini-disc, an album name and a song name recorded in the album can be recorded as character information on a disc disk name or a track name. The disc name and the track name are displayed on the display of the mini disc recording / reproducing apparatus. From the disc name and track name displayed on the display, the album name of the mounted disc, the title of the song being reproduced, and the like can be known.

[0004] As described above, the mini disc recording / reproducing apparatus can record the disc name and the track name in character information. However, the conventional mini-disc recording / reproducing apparatus has a full keyboard for inputting characters, and thus it is difficult to perform an operation for inputting a disc name or a track name. That is, in the conventional mini-disc recording / reproducing apparatus, since a full keyboard cannot be provided for downsizing, character input is performed using a ten key or a jog dial. However, in the numeric keypad, since a plurality of characters are assigned to one key, operability is not good. In addition, in the character input by the jog dial, a desired character is input by rotating the jog dial, so that the character input operation takes time.

Therefore, it is conceivable to connect the mini disc recording / reproducing apparatus to a personal computer and edit the disc name and track name of the mini disc using a keyboard of the personal computer. Since a personal computer has a full keyboard and display, if you can edit the disc name and track name using a personal computer,
It would be very easy to enter and edit disc and track names.

[0006]

However, in a personal computer, a character code called shift JIS is usually used in Japanese sentences. On the other hand, the mini-disc is recorded only in the ASCII code so that the characters are not garbled even in a device of an overseas specification.
In addition, in the case of katakana notation, an identification character of "@" is added before and after the Roman character. In a katakana-compatible model, it is detected whether or not there is an identification character of "@" before and after the ASCII code. If there is an identification character, it is determined that the character is a Roman character, and the Roman character is converted to katakana.

As described above, in the personal computer, the shift JIS code is used for the Japanese sentence, whereas the mini disc is recorded only in the ASCII code. Has an identification character of "@". For this reason, if the character information of the mini-disc is directly edited on a personal computer, there is a problem in editing the katakana mark.

[0008] That is, for example, it is assumed that a character displayed as "Kakiku" in the disc name of a mini-disc is edited as "Kakikukeko" on a personal computer. In this case, the display of “Kakiku” is recorded as “{KAKIKU}”. For this reason, if this character information is directly taken into the personal computer, it is displayed as "{KAKIKU}" on the display of the personal computer. In such Roman alphabet notation, character information is difficult to recognize. Then, when editing this character information to “Kakikukeko”, use the keyboard to enter “＾” and “K”.
You have to type "A""K""I""K""U""＾". Striking such a special identification character "@" before and after a Roman character confuses the user.

Therefore, an object of the present invention is to provide a character input system which can input and edit a disc name and a track name by using a personal computer and can easily input and edit in katakana. It is in.

[0010]

According to the present invention, data is recorded on a disk-shaped recording medium having a program area for recording program information and an additional information recording area for recording additional information relating to the program area as character information. A character input system comprising a disk recording / reproducing device for reproducing / reproducing, a keyboard for inputting character information, and a control device having a display for displaying character information, wherein the control device manages additional information recording of the disk. Name list means for storing character information to be recorded in the area; means for converting a character to a code representing katakana by adding a predetermined code before and after the Roman character when character information is input by a Roman character from a keyboard; A sentence stored as a code that represents katakana by adding a predetermined code before and after the Roman character to the list And means for displaying by converting the information into katakana, the disc recording / reproducing apparatus when inputting character information obtained from the additional information recording area of the loaded disc to co, the information of the edited name list disk recording /
And a means for sending to a playback device.

A name list for storing character information to be recorded in the additional information recording management area of the disc is provided.
When character information is input to the name list by a Roman character from a keyboard, a predetermined code is added before and after the Roman character, converted into a code representing katakana, and the character information is stored. The information of the name list stored as a code representing katakana by adding a predetermined code before and after this Roman character is converted into katakana and displayed on the display. The name list information has the same form as the character information recorded on the disc. And
When character information is input in Roman characters from the keyboard, predetermined codes are added before and after the Roman characters to convert them to codes representing katakana, and katakana is displayed on the display, making input and editing easier. Become.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows the overall configuration of a system to which the present invention is applied. In FIG. 1, reference numeral 100 denotes a mini disc recording / reproducing apparatus, and 101 denotes a personal computer. A 64 mm-diameter magneto-optical disk (or optical disk) mounted on a cartridge is mounted on the disk mounting section 102 of the mini-disk recording / reproducing apparatus 101. As will be described later, the disc mounted on the mini-disc recording / reproducing apparatus 100 includes the album name of the disc or the song title of the song recorded on the disc in sector 1 of the U-TOC as a disc name or a track name. Can be recorded. The disc name and the track name are displayed on the display 103 of the mini disc recording / reproducing apparatus 100.
From the display on the display 103, it is possible to know the name of the album of the loaded magneto-optical disk, the name of the song being reproduced, and the like. The mini disc recording / reproducing device 100 includes:
A jog dial 104 is provided. The jog dial 104 is used when inputting a disc name or a track name by the mini disc recording / reproducing apparatus 100 alone. In addition, when the mini disc recording / reproducing apparatus 100 is connected to the personal computer 101, it becomes possible to input and edit a disc name and a track name on the personal computer 101.

That is, the mini disc recording / reproducing apparatus 1
00 and the personal computer 101 are, for example,
They are bidirectionally connected by a serial line 50 via a serial interface such as RS232C. As described above, when the mini disc recording / reproducing apparatus 100 and the personal computer 101 are connected, information on the disc name and track name recorded on the disc mounted on the mini disc recording / reproducing apparatus 100 is transmitted to the personal computer 101. Sent. Then, the information of the disc name and the track name is, as shown in FIG.
The information is displayed on the display 105 of the personal computer 101. By operating the keyboard 106 of the personal computer 101, the information of the disc name and the track name can be edited. Then, U-TOC information is formed based on the disk name and track name edited on the personal computer 101, and the edited U-TOC information is again recorded / reproduced on the mini-disc via the serial interface. The data is sent to the apparatus 100 and is recorded in the U-TOC area of the disc mounted on the mini disc 100.

As described above, in the system to which the present invention is applied, the information on the disk name and track name of the mini-disc mounted on the mini-disc recording / reproducing apparatus 100 is displayed on the display 105 of the personal computer 101. Editing can be performed using the keyboard 106 of the personal computer 101. As described above, when the disk name or the track name is edited by the keyboard 106, the operability is remarkably improved as compared with the input by the jog dial.

FIG. 3 shows a mini disc recording / reproducing apparatus 10.
1 shows the configuration of FIG. In FIG. 3, reference numeral 1 denotes a magneto-optical disk on which audio data is recorded, which is rotated by a spindle motor 2. Reference numeral 3 denotes an optical head for irradiating the magneto-optical disk 1 with laser light during recording / reproduction, and outputs a high-level laser light for heating a recording track to the Curie temperature during recording, and a magnetic Kerr effect during reproduction. As a result, a relatively low-level laser beam for detecting data from the reflected light is output.

For this reason, the optical head 3 is equipped with a laser diode as a laser output means, an optical system including a deflection beam splitter and an objective lens, and a detector for detecting reflected light. The objective lens 3a is held by the biaxial mechanism 4 so as to be displaceable in the radial direction of the disk and in the direction of coming into contact with and separating from the disk.

Reference numeral 6a denotes a magnetic head for applying a magnetic field modulated by the supplied data to the magneto-optical disk 1, and is arranged at a position facing the optical head 3 with the magneto-optical disk 1 interposed therebetween. The entire optical head 3 and the magnetic head 6a can be moved in the disk radial direction by the sled mechanism 5.

The information detected from the magneto-optical disk 1 by the optical head 3 by the reproducing operation is supplied to the RF amplifier 7. The RF amplifier 7 calculates the reproduced RF signal, tracking error signal, focus error signal, groove information (absolute position information recorded as a pre-groove (wobbling groove) on the magneto-optical disk 1) and the like by performing an arithmetic process on the supplied information. Extract. Then, the extracted reproduction RF signal is supplied to the encoder / decoder unit 8. Further, the tracking error signal and the focus error signal are supplied to the servo circuit 9, and the groove information is supplied to the address decoder 10, where it is decoded and output as an absolute address.

The servo circuit 9 receives the supplied tracking error signal and focus error signal, a track jump command from the system controller 11, an access command,
Various servo drive signals are generated based on rotation speed detection information of the spindle motor 2 and the like, and the focus and tracking control is performed by controlling the two-axis mechanism 4 and the sled mechanism 5, and the spindle motor 2 is controlled at a constant linear velocity (CLV). I do.

The reproduced RF signal is supplied to the encoder / decoder 8
After decoding processing such as EFM demodulation and CIRC is performed by the memory controller 12, the buffer RA
Written to M13. The optical head 3 reads data from the magneto-optical disk 1 and the optical head 3
The transfer of the reproduction data in the system from to the buffer RAM 13 is at 1.41 Mbit / sec and is performed intermittently.

The data written in the buffer RAM 13 is read out at a timing when the transfer of the reproduction data becomes 0.3 Mbit / sec, and is supplied to the encoder / decoder 14. Then, the signal is subjected to reproduction signal processing such as decoding processing for the audio compression processing, converted into an analog signal by the D / A converter 15, supplied from the output terminal 16 to a predetermined amplification circuit section, and reproduced and output. For example, they are output as L, R analog audio signals.

Here, writing / reading of data to / from the buffer RAM 13 is performed by addressing the memory controller 12 under the control of a write pointer and a read pointer. The write pointer (write address) is 1.41.
The value is incremented at the timing of Mbit / sec, while the read pointer (read address) is incremented at the timing of 0.3 Mbit / sec. Due to the difference between the write and read bit rates, a certain amount of data is stored in the buffer RAM 13. Buffer RAM1
When the full capacity data is stored in the memory 3, the increment of the write pointer is stopped, and the operation of reading data from the magneto-optical disk 1 by the optical head 3 is also stopped. However, since the read pointer is continuously incremented, the reproduced audio output is not interrupted.

Thereafter, only the read operation from the buffer RAM 13 is continued, and at some point, the buffer RAM 13
If the amount of data stored in the memory becomes equal to or less than the predetermined amount, the data read operation by the optical head 3 and the increment of the write pointer are restarted again, and the data in the buffer RAM 13 is stored again.

By outputting the reproduced sound signal through the buffer RAM 13 as described above, even if the tracking is lost due to disturbance or the like, the output of the reproduced sound is not interrupted, and the data storage remains. For example, by accessing the correct tracking position and restarting the data reading during the operation, the operation can be continued without affecting the reproduction output. That is, the seismic function can be significantly improved.

The address information output from the address decoder 10 and the subcode data used for the control operation are supplied to the system controller 11 via the encoder / decoder section 8 and used for various control operations.

The system controller 11 is constituted by a microcomputer. Further, the system controller 11 outputs a laser control signal for controlling the operation of the laser diode in the optical head 3, and controls on / off of the output of the laser diode. It is possible to switch between a low-level output during reproduction and a relatively high-level output during recording.

When a recording operation is performed on the magneto-optical disk 1, the recording signal (analog audio signal) supplied to the input terminal 17 is converted into digital data by the A / D converter 18 and then converted to digital data. Encoder / decoder unit 1
4 and subjected to audio compression encoding processing.

The recording data compressed by the encoder / decoder section 14 is temporarily written into the buffer RAM 13 by the memory controller 12, read out at a predetermined timing, and sent to the encoder / decoder section 8. Then, the encoder / decoder unit 8 sets the CIRC
After being subjected to encoding processing such as encoding and EFM modulation, it is supplied to the magnetic head drive circuit 6.

The magnetic head drive circuit 6 supplies a magnetic head drive signal to the magnetic head 6a in accordance with the encoded recording data. That is, the application of the N or S magnetic field to the magneto-optical disk 1 by the magnetic head 6a is performed. At this time, the system controller 11
A control signal is supplied to the optical head to output a recording level laser beam.

Reference numeral 19 denotes an operation input unit provided with keys and the like provided for user operations, and corresponds to operation keys and operation dials. 31 is a display unit (display 103
, 33 denotes a light receiving unit. Further, a serial interface 35 such as RS232-C for inputting and outputting data to and from the outside is provided.

When performing a recording / reproducing operation on the disk 1, management information recorded on the disk 1, that is, P-TOC (pre-mastered TOC), U-TO
It is necessary to read C (user TOC). The system controller 11 determines the address of the area to be recorded on the disk 1 and the address of the area to be reproduced on the disk 1 according to the management information. This management information is held in the buffer RAM 13. For this reason, in the buffer RAM 13, a buffer area for recording data / reproduction data and an area for holding these management information are divided and set.

Then, the system controller 11 reads out the management information by executing the reproducing operation on the innermost peripheral side of the disk on which the management information is recorded when the disk 1 is loaded, and stores it in the buffer RAM 13. The information can be referred to in the recording / reproducing operation for the disc 1 thereafter. The buffer RA
In some cases, the system controller 11 may take in a part of the TOC data read into the M13 into the internal RAM.

The U-TOC is edited and rewritten in accordance with recording or erasing of data. The system controller 11 executes this editing process every time a recording / erasing operation is performed. The rewriting operation is performed on the -TOC information, and the U-TOC area of the disc 1 is also rewritten at a predetermined timing in accordance with the rewriting operation. For example, the U-TOC is rewritten on the disk 1 when the eject operation of the disk 1 is performed or the power-off operation is performed.

Here, an audio data sector recorded on the disk 1 in the form of sector data, and a P-TOC sector and a U-TOC sector for managing the recording / reproducing operation of the audio data will be described.

As management information for managing the recording / reproducing operation of the track on the disk 1, P-TO
The sector C will be described.

As the P-TOC information, an area designation such as a recording explanation area (recordable user area) of a disc, a management of a U-TOC area, and the like are performed. When the mini disc 1 is a pre-mastered disc which is a read-only optical disc, the RO is determined by the P-TOC.
Music recorded in the form of M can also be managed.

FIG. 4 shows one sector (sector 0) of P-TOC information repeatedly recorded in an area for P-TOC (for example, a ROM area on the innermost peripheral side of the disk). The P-TOC sector exists from sector 0 to sector 4, but sector 1 and subsequent sectors are optional.

The data area (4 bytes × 588, 2352 bytes) of the P-TOC sector 0 has all 0s at the head position.
Alternatively, a periodic pattern consisting of all-one 1-byte data, an address indicating a cluster address and a sector address, and the like are added by 4 bytes, and the header is formed as described above.

Following the header, an identification ID by an ASCII code corresponding to the character "MINI" is added at a predetermined address position to indicate that the area is a P-TOC area.

Subsequently, the disc type and recording level, the music number of the first music piece recorded (First TNO), the music number of the last music piece (Last TNO), the lead-out start address LOA, and the sector use status (Used) sectors), power cal area start address PCA, U-TOC
Start address USTA, recordable area (recordable user area) start address RSTA
Etc. are recorded.

Subsequently, a correspondence table instruction data section having table pointers (P-TNO1 to P-TNO255) for associating each music piece or the like recorded in pit form with a parts table in a management table section described later is prepared. I have.

In the area following the corresponding table instruction data portion, a management part in which 255 parts tables (01h) to (FFh) are provided corresponding to the table pointers (P-TNO1 to P-TNO255). A table section is prepared. In addition,
Numerical values with "h" are in so-called hexadecimal notation.

In each of the parts tables, a start address serving as a starting point, an end address serving as an end, and mode information (track mode) of the part can be recorded.

The track mode information in each part table records, for example, information on whether the part is set to prohibit overwriting or data copying, whether it is audio information, and the type of monaural / stereo. Have been.

Each of the parts tables from (01h) to (FFh) in the management table section is a table pointer (P-TNO1 to P-TNO1).
P-TNO255) indicates the contents of the part. In other words, for the first song, the table pointer P-TN
A certain parts table (for example, (01h)) is recorded as O1. In this case, the start address of the parts table (01h) is the start address of the recording position of the first music piece, and similarly, the end address is the first music piece. Is the end address of the position where the song has been recorded. Further, the track mode information is information on the first music piece.

Actually, a numerical value capable of indicating a part table at a byte position in the P-TOC sector 0 by a predetermined arithmetic processing is described in the table pointer.

Similarly, for the second tune, the parts table (for example, (02h)) indicated by the table pointer P-TNO2
The start address, the end address, and the track mode information of the recording position of the second music piece are recorded in the record.

Similarly, the table pointer is P-TNO255
Up to the 255th song on the P-TOC.

Then, as described above, the P-TOC sector 0
Is formed, for example, at the time of reproduction, a predetermined music piece can be accessed and reproduced.

In the case of a recordable / reproducible mini-disc, since there is no so-called premastered music area, the correspondence table instruction data section and the management table section are not used (these are managed by the U-TOC described later). Therefore, all bytes are set to "00h".

However, a pre-mastered type disc in which all music pieces are recorded in a ROM form (pit form), and a hybrid type disc having both a ROM area and a magneto-optical area as an area in which music pieces and the like are recorded. For the above, the correspondence table instruction data section and the management table section are used for managing the music in the ROM area.

Next, U-TOC sector 0 and sector 1 will be described.

FIG. 5 shows the format of the U-TOC sector 0, which is mainly a data area in which management information on music recorded by the user and a free area in which new music can be recorded is recorded. You.

For example, when recording a certain music on the mini disc 1, the system controller 11
A free area on the disk is searched for from U-TOC sector 0, and audio data is recorded there. At the time of reproduction, the area in which the music to be reproduced is recorded is determined from U-TOC sector 0, and the reproduction operation is performed by accessing the area.

The U-TOC sector 0 shown in FIG.
As in the case of the TOC, a header is first provided, followed by a maker code, a model code, a song number of the first song (First TNO), and a song number of the last song (Last TNO) at predetermined address positions.
, Sector usage status, disk serial number, disk ID, and the like.

Further, in order to identify the area of the music or the free area recorded by the user by making it correspond to a management table section described later, various table pointers (P- An area for recording DFA, P-EMPTY, P-FRA, and P-TNO1 to TN0255) is prepared.

Then, the table pointer (P-DFA to TNO2)
55) (01)
h) to (FFh) are provided with 255 parts tables. Each of the parts tables has, like P-TOC sector 0, a start address as a starting point for a part, an end address as an end, and the like. Part mode information (track mode) is recorded.

Further, in the case of the U-TOC sector 0, since the parts indicated in each part table may be successively connected to other parts, the start address and the end address of the connected parts are recorded. Link information indicating the parts table that is present can be recorded.

In this type of recording / reproducing apparatus, even if data of one music piece is physically discontinuous, that is, even if it is recorded over a plurality of parts, it is reproduced while accessing between parts, so that the reproducing operation is hindered. Therefore, the music or the like recorded by the user may be recorded in a plurality of parts for the purpose of efficient use of the recordable area.

Therefore, link information is provided, and the part tables can be connected by designating the part tables to be connected, for example, by the numbers (01h) to (FFh) given to the respective part tables.

Note that the link information is actually indicated by a numerical value which is a byte position in the U-TOC sector 0 by a predetermined arithmetic processing. That is, the part table is designated as 304+ (link information) × 8 (byte).

It should be noted that music pieces recorded in a pit form on a premastered disc or the like are not usually divided into parts, so that all link information in the P-TOC sector 0 is “(00h)”.

That is, in the management table section in the U-TOC sector 0, one part table represents one part. For example, for a music composed of three parts connected, they are connected by link information. The parts position is managed by the three parts tables.

Each part table from (01h) to (FFh) in the management table section of the U-TOC sector 0 is a table pointer (P-DF) in the corresponding table instruction data section.
A, P-EMPTY, P-FRA, P-TNO1 to TNO255) indicate the contents of the part as follows.

The table pointer P-DFA indicates a defective area on the mini-disc 1, and indicates a single part table or a plurality of parts tables indicating a track portion (= part) serving as a defective area due to a scratch or the like. The first part table in the box is specified. In other words, if there is a defective part, (01h) in the table pointer P-DFA
To (FFh) are recorded, and the corresponding parts table indicates the defective part by the start and end addresses. If another defective part exists, another part table is designated as link information in the part table, and the defective part is also shown in the part table. If there is no other defective part, the link information is set to “(00h)”, for example, and there is no link thereafter.

The table pointer P-EMPTY indicates the head part table of one or a plurality of unused part tables in the management table section. If an unused part table exists, the table pointer P-EMPTY is used.
, Any one of (01h) to (FFh) is recorded. If there are multiple unused part tables, the part tables specified by the table pointer P-EMPTY are sequentially specified by the link information, and all unused part tables are stored in the management table section. Be linked.

The table pointer P-FRA indicates a free area (including an erasure area) where data can be written on the mini-disc 1, and a track portion (= part) indicating a free area is indicated by 1 or The first part table in multiple parts tables is specified. That is,
If free area exists, table pointer P-FR
In A, any one of (01h) to (FFh) is recorded, and in the corresponding parts table, parts which are free areas are indicated by start and end addresses. When there are a plurality of such parts, that is, when there are a plurality of part tables, the link information sequentially designates the parts table whose link information is “(00h)”.

FIG. 6 schematically shows the management state of parts that are free areas by using a parts table. This is because when the part (03h) (18h) (1Fh) (2Bh) (E3h) is set as a free area, this state follows the corresponding table instruction data P-FRA and the parts table (03h) (18h) (1Fh) The state represented by the link of (2Bh) (E3h) is shown. Note that the management form of the defective area and the unused parts table is the same.

By the way, if it is a magneto-optical disk in which audio data such as music is not recorded at all and has no defect,
Parts table (01h) by table pointer P-FRA
This indicates that the entire recordable user area of the disc is a free area. In this case, since the remaining part tables (02h) to (FFh) are not used, the part table (02h) is specified by the table pointer P-EMPTY, and the link of the part table (02h) is performed. The parts table (03h) is specified as information ...
It is linked to the parts table (FFh). In this case, the link information of the parts table (FFh) is set to “(00h)” indicating that there is no connection thereafter.

At this time, in the parts table (01h), the start address of the recordable user area is recorded as the start address, and the address immediately before the lead-out start address is recorded as the end address. .

The table pointers P-TNO1 to P-TNO255 indicate songs recorded on the magneto-optical disk 1 by the user. For example, the table pointer P-TNO1 includes one or a plurality of pieces of data on which data of the first piece of music is recorded. A parts table indicating a temporally leading part of the parts is designated.

For example, when the first music piece is recorded on the disk without dividing the track, that is, recorded as one part, the recording area of the first music piece is stored in the parts table indicated by the table pointer P-TNO1. Are recorded as start and end addresses.

Further, for example, in the case where the second piece of music is discretely recorded in a plurality of parts on the disc,
Each part is designated in order of time to indicate the recording position of the music. That is, the table pointer P-TNO2
The other part tables are sequentially specified in accordance with the link information from the part table specified in (1) to the part table in which the link information is "(00h)". In this way, for example, since all the parts on which the data constituting the second tune are recorded are sequentially designated and recorded, the data of the U-TOC sector 0 can be used to reproduce the second tune or the second tune. When performing overwriting on the area, it is possible to access the optical head 3 and the magnetic head 6 to extract continuous music information from discrete parts, and to perform recording using the recording area efficiently.

FIG. 7 shows the format of the U-TOC sector 1, which is used as a data area for recording input character information when a disc name or a track name is given.

In the U-TOC sector 1, as a character slot indication data portion corresponding to each recorded music,
Slot pointers P-TNA1 to P-TNA255 are prepared. In addition, a character slot designated by the slot pointers P-TNA1 to P-TNA255 is prepared. In the character slot, 255 units of slots (01h) to (FFh) with 8 bytes per unit
Are formed, and character data is managed in substantially the same form as that of the U-TOC sector 0.

In the slots (01h) to (FFh), character information as a disc title (disc name) or a song name (track name) is recorded in ASCII code. In addition,
The 8-byte slot before the slot (01h) is a dedicated area for the disc name.

Then, for example, in the slot designated by the slot pointer P-TNA1, the character input by the user corresponding to the first music is recorded.

Further, since the slots are linked by the link information, the character input corresponding to one music piece (track) can be handled even if it is larger than 7 bytes (7 characters).

In the U-TOC sector 1, the slot pointer P-EMPTY manages unused slots. That is, the unused slots are managed in the same manner as the management method of the unused parts table using the table pointer P-EMPTY of the U-TOC sector 0 described above.

The above U-TOC sector 0 and sector 1
In addition, as the U-TOC sector 2, a data area for recording a recording date and time of a music piece mainly recorded by a user is prepared.

Also, as in the case of the sector 1, a data area for recording input character information when a user gives a song title or a disc title is prepared as the U-TOC sector 4. You. The format of the sector 4 is almost the same as that of the sector 1.

However, in this sector, code data corresponding to kanji and European characters are recorded. In addition to the data of sector 1, the attribute of a character code used as a character code is recorded at a predetermined byte position. .

The management of the character information of the U-TOC sector 4 is specified by the slot pointers P-TNA1 to P-TNA255 and the slot pointers P-TNA1 to P-TNA255 as the character slot indication data portion, similarly to the sector 1. This is performed by 255 units of slots (01h) to (FFh).

As described above, the disk 1 has the U-TOC
The character information by the ASCII code can be recorded in the area of the sector 1, but the U-TOC sector 1 has the ASCII code.
Not only the II code but also katakana information can be recorded. However, only the ASCII code is actually recorded, and if katakana is entered, it is converted to an AS code.
This is converted into a CII code and recorded. Hereinafter, A
A description will be given of a character information recording operation capable of coping with katakana only by recording the SCII code.

First, when katakana input is performed,
Each input katakana character is converted into an alphabet as shown in FIG. For example, if "A" is input, it is converted to "A", and if "A" is input, it is converted to "a".
Convert to Similarly, “KA” is “KA” and “W” is “WA”.

This conversion is completely one-to-one correspondence, that is, for one katakana character, there is only one corresponding alphabet conversion state.

For example, the input of “sha” is katakana “shi” and “ya”, and “SI” and “ya” respectively.
Is converted to "Shi" is converted to "SHI"
"S" and "C" are not converted to "SYA" or "SHA" at once.

Next, when the katakana input is converted according to the correspondence shown in FIG. 8, an identification character indicating that the character string has been converted is added before and after the character string. In this embodiment, the identification character is "@". “＾” is one of the recordable ASCII codes. For example, when the user inputs the character "Greece" in the katakana input mode, the character string becomes "@GIR" by the conversion according to the rule of FIG. 8 and the addition of the identification character "@".
ISIya @].

With these two rules, the recorded character string corresponding to the input character is as shown in the examples of FIGS. 9A to 9D.

FIG. 9A shows a case where there is no katakana input.
The character string “ABC5de” is used as is as “ABC5de”
de ”on the disc.

FIGS. 9B and 9C show a case where katakana input is performed, in which each character is converted to a character in the alphabet and an identification character "@" is added before and after.

FIGS. 9D and 9E show a case where there are both a character input in katakana and a character input in ASCII code character. In these cases, as shown in FIG. Before and after the conversion, an identification character "@" is arranged.

As yet another rule, a character string surrounded by an identification character "@" is a predetermined number of bytes, for example, 80 characters.
No more than a byte.

For example, as shown in FIG. 9F, it is assumed that “Aioka Okikukeko... In this case, if "Aiueokakikuko ... Larrillero" is converted according to the rule of FIG. 8, "@AIUEOKAKI"
KUKEKO ... RAIRURERO ＾ "
The character string enclosed by the identification character "@" is the number of bytes (ASCI
One character of the I code is one byte), which is 86 bytes. In such a case, the character string is delimited and an identification character "@" is added. For example, as shown as an example 1 in FIG. 9F, "@AIUEOKAKIKUKEKO... RA
The character string enclosed by the identification characters "$" is divided into "$" and "$ RIRURORO" so that the character string does not exceed 80 bytes. Alternatively, a break may be performed as shown in Example 2. Of course, there can be various other ways of dividing.

When a new katakana input character is added to a character string that has already been recorded, the new input character string (conversion character string) is uniquely surrounded by an identification character "@". . For example, it is assumed that “ABC”, “{AIU}”, “ABCD”, etc. have already been recorded on the U-TOC corresponding to a certain track on the disk as shown in FIGS. 10A to 10C.

In the case where katakana input is added without deleting these characters, a character string obtained by converting the input katakana is surrounded by an identification character "@" as shown in FIG. For example, in the case of FIG. 10B, instead of “{AIUKAKIKU}”, “@KA
KIKU ＾ ”. This is to prevent an increase in the number of bytes in a portion surrounded by the identification character "@" due to the addition of a character.

In the system to which the present invention is applied, the disc name and the track name recorded in the UTOC sector 1 area of the mini disc are input and edited by using the personal computer 101 as described above. As is well known, the personal computer 101 has a CPU
And a storage device such as a RAM, a ROM, and a hard disk. However, in order to facilitate the description of the input and edit operations of the disk name and the track name, the description will be made using functional blocks.

FIG. 11 shows a personal computer 101.
FIG. 6 is a functional block diagram showing the operation of the first embodiment. In FIG.
Character information such as a disk name and a track name obtained from the U-TOC sector 1 of the magneto-optical disk mounted on the mini-disk recording / reproducing apparatus 100 is transmitted via the serial transmission path 50 and the interface 51 to the U-TOC.
It is supplied to the receiving unit 52. The character information received by the U-TOC receiving unit 52 is sent to the name list creating unit 53. The name list creator 53 reads the UTOC sector 1
, Data effective as a disc name or a track name is cut out from the information and arranged in the name list 54.

That is, as shown in FIG. 12A, a delimiter code “00h” is arranged at the end of the disc name and the end of the track name. Also, in the unused area,
The code “00h” is arranged. As shown in FIG. 12B, when there is no disc name, the code “00h” is arranged in the disc name. Using these delimiter codes, data effective as a disc name or a track name is cut out.

In the name list 54, the U-T
Katakana is written in the same format as sector 1 of OC. That is, as described above, in the case of representing katakana, an identification character of “@” is added to both ends of the Roman character.

The character information stored in the name list 54 is sent to the code conversion unit 55. Code conversion unit 55
Is used to convert a code representing katakana into katakana by adding an identification character "@" to both ends of the Roman alphabet. In other words, for example, when representing the pseudonym “Kakiku”, “＾” is displayed on sector 1 of the U-TOC.
KAKIKU ＾]. Then, it is similarly stored in the name list 54 as “{KAKIKU}”. When the code "{KAKIKU}" is sent from the name list 54, the code conversion unit 55
Convert it to katakana "Kakiku". The output of the code conversion unit 55 is displayed on the display 105 via the display control unit 56.

When editing a disc name or a track name, an input is given from the keyboard 106. At this time, characters are given from the keyboard 106 by inputting Roman characters. The character code from input key 106 is sent to code conversion unit 58. Code converter 58
In the case of Roman alphabet input, an identification character of "@" is added before and after the Roman alphabet. This code converter 58
Is sent to the name list 54, and based on this,
The name list is edited.

For example, when writing a track name “Kakikukeko”, “K”
"A""K""I""K""U""K""E""K"
"O" is input. When input in this manner, the code conversion unit 58 adds identification characters before and after the Roman character,
Name list 54 as "{KAKIKUKEKO}"
Registered in. Then, the output of the name list 54 is sent to the code conversion unit 55, and is displayed on the display 105 as katakana “Kakikukeko”.

The input from the keyboard 106 may include fraud, characters, or symbols. For example,
Characters such as "@" are illegal characters. Code converter 5
5 checks whether or not an illegal character or symbol is included in the name list 54, and when an apparently illegal character or symbol is inputted, as shown in FIG. Replace with valid letters and symbols. That is, for example, the character "@" is illegal. In this case, as shown in FIG. 13, the "@" code "5Ch" is
It is replaced with a character code “24h” indicating “＄” or a blank character code “20h”.

When the editing of the disc name or the track name is completed, the information of the name list 54 is sent to the U-TOC creating section 60, and the U-TOC 60 creates the data of the sector 1 of the U-TOC. This data is sent to U-TOC transmission section 61. Data from the U-TOC transmission unit 61 is sent to the mini-disc recording / reproducing device 100 via the interface 51 and the serial transmission path 50, and the U-TOC of the magneto-optical disc mounted on the mini-disc recording / reproducing device 100 is transmitted. -Recorded in the TOC.

As described above, the name list 5 in which the character information to be recorded in the additional information recording management area of the disc is stored
4 is provided, and the name list 54 stores a disc name and a track name in the same manner as in the UTOC. Then, when character information is input in Roman characters from the keyboard 106, the identification character "@" is added before and after the Roman characters.
Is added, and converted into a code representing katakana, and the disc name and the track name are stored in the name list 54. The information of the name list stored in a form in which an identification character "@" is added before and after this Roman character is converted into katakana by a code conversion unit 55, and is converted into katakana.
5 is displayed. In this case, the form of the character information of the name list 54 is the same as the form of the UTOC character information.
The input from the keyboard 106 is a normal Roman character input. Therefore, the input editing work is easy.

[0107]

According to the present invention, the name list includes
The character information is stored in the same form as the character information recorded on the disk, that is, as a code representing katakana by adding a predetermined code before and after the Roman character. Then, the information in the name list is converted into katakana and displayed. When character information is input in Roman characters from the keyboard, predetermined codes are added before and after the Roman characters to convert them into codes representing katakana, and katakana is displayed on the display. In this way, when editing the disc name or track name of a mini-disc on a personal computer, editing can be performed with a keyboard using ordinary Roman alphabet input, and there is no need to add a special identification code. , Characters are displayed in katakana. Therefore, editing of the disc name and the track name can be easily performed.

[Brief description of the drawings]

FIG. 1 is a plan view of an example of a system to which the present invention is applied.

FIG. 2 is a schematic diagram used for describing a system to which the present invention is applied.

FIG. 3 is a block diagram showing an example of a mini disc recording / reproducing apparatus in a system to which the present invention is applied.

FIG. 4 is a schematic diagram showing a P-TOC of a mini disc.

FIG. 5 is a schematic diagram showing a U-TOC of a mini disc.

FIG. 6 is a schematic diagram used for explaining a U-TOC of a mini disc.

FIG. 7 is a schematic diagram showing a U-TOC of a mini disc.

FIG. 8 is a schematic diagram illustrating a conversion table between Roman characters and katakana;

FIG. 9 is a schematic diagram used for explaining katakana marks.

FIG. 10 is a schematic diagram used for explaining katakana marks.

FIG. 11 is a functional block diagram used for describing a personal computer in a system to which the present invention is applied.

FIG. 12 is a schematic diagram used for describing a personal computer in a system to which the present invention is applied.

FIG. 13 is a schematic diagram used to explain code conversion of an illegal character.

[Explanation of symbols]

54: name list, 55, 58: code converter, 100: mini-disc recording / reproducing device, 101
... Personal computer, 105 ... Display, 106 ... Keyboard

Claims (2)

[Claims] 1. A disk recording / reproducing apparatus for recording / reproducing data on / from a disk-shaped recording medium having a program area for recording program information and an additional information recording area for recording additional information related to the program area as character information. A character input system comprising a device, a keyboard for inputting character information, and a display for displaying the character information, wherein the control device records information in an additional information recording management area of the disk. Name list means for storing character information to be stored, and means for adding a predetermined code before and after the Roman character and converting the character information into a code representing katakana when the character information is input from the keyboard in Roman characters; A predetermined code is added before and after the above-mentioned Roman alphabet, and it is stored as a code representing katakana. Means for converting the displayed character information into katakana and displaying the same; and inputting the character information obtained from the additional information recording area of the disc mounted on the disc recording / reproducing apparatus, and converting the information of the edited name list. Means for sending to the disk recording / reproducing apparatus. Means for checking whether or not the character information input by the keyboard is used for katakana display; 2. The character input system according to claim 1, further comprising means for converting character information into other character information.