JPH06338182A - Magneto-optical disk recording and reproducing device - Google Patents

Abstract

PURPOSE:To make the names of disks to be used for recording, character codes, such as the names of pieces of musics, etc., or recording sectors in a U-TOC easily recognizable and, at the same time, to arbitrarily designate them and, when some of them are already designated, to input the already designated ones by using character codes. CONSTITUTION:When a disk is loaded, the kind of the characters recorded on the disk is displayed on a displaying section 11. At the time of inputting the characters to a U-TOC, already recorded or inputted character codes are preferentially inputted. The input of codes preferentially set in such a way can be set to different ones by using a character setting keys 19. The key 19a is used for setting the input of ASCII codes to the sector 1 of the U-TOC and the setting key 19b is used for setting the input of shift JIS codes to the sector 4 of the U-TOC. The setting key 19c is used for setting the input of ISO-8859-1 codes to the sector 4 of the U-TOC.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magneto-optical disc recording / reproducing apparatus for recording / reproducing a rewritable magneto-optical disc, a so-called mini disc, and more particularly to a recording system of characters such as disc titles and song names.

[0002]

2. Description of the Related Art A mini disk (MD) known as a rewritable magneto-optical disk has a recordable area outside the pit information recording area on the inner peripheral side. The recordable area has a user's tok area (U-TOC) and a program area. There is no pit here, but a groove that guides the track.
Is dug and records information along this groove.

The groove is undulated in a waveform, and the average frequency of a signal generated by the undulation (wobble) is 22.
The rotation of the disc is controlled so that the frequency becomes 05 kHz.
Further, the absolute time (address information) from the recording start position is FM-modulated and recorded in this wobble.

Recording is performed by magnetization of the magnetic film. That is, after heating the magnetic film above the Curie point by the laser spot and applying a magnetic field that inverts according to the signal,
When cooled, a signal is recorded on the magnetic film as a change in the magnetization direction. Such recording can be performed on a portion that has already been recorded. That is, overwriting is possible.

Although any song is recorded in the recordable area, the management information of each recorded song is recorded in the U-TOC. Addresses indicating the start and end times of each song are recorded in sector 0 of the U-TOC, song names are recorded in ASCII code in sector 1, and song names are shifted in sector 4 JIS code or ISO-8859-1 code. Recorded in.

Conventionally, in a magneto-optical disk recording / reproducing apparatus for recording or reproducing such a mini disk, U-
There was no recordable disc name or song name corresponding to each track number (TNO) in both sector 1 and sector 4 in the TOC.

Uppercase letters and lowercase letters of the alphabet, arithmetical numbers and some special symbols can be input to both sector 1 and sector 4, and when a song title is entered with only these characters, the song title is sector 1. I didn't know if it would be recorded in or sector 4. Furthermore, when recorded in sector 4, it was not known which character code was used for recording.

[0008]

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and an object of the present invention is to clarify a character code such as a disc name and a song name to be input and a recording sector. Another object of the present invention is to provide a magneto-optical disk recording / reproducing apparatus capable of arbitrarily setting a character code and a recording sector to be input.

[0009]

A magneto-optical disk recording / reproducing apparatus according to the present invention is a magneto-optical disk recording / reproducing apparatus capable of recording characters on sectors 1 and 4 in a U-TOC of a magneto-optical disk. It is provided with an operation key for designating the type or the sector.

Further, in the magneto-optical disk recording / reproducing apparatus, when there is a character already recorded in the sector 4 in the U-TOC, the character input by the character code of the character is automatically set. It was done so.

Further, in the same magneto-optical disc recording / reproducing apparatus, when there is a character already recorded in the sector 4 in the U-TOC, when an input with a character code different from the character code is set. It is configured to display an alarm on and prohibit the input of characters.

In the magneto-optical disk recording / reproducing apparatus described above, when an alarm is displayed and character input is prohibited, an operation key for canceling the condition is provided. Character ·
This is configured so that the input of the code is permitted and the already recorded character of the sector 4 is erased.

[0013]

According to the magneto-optical disc recording / reproducing apparatus of the present invention, a character code such as a disc name to be recorded, a song name, or a recording sector in the U-TOC can be arbitrarily designated by an operation key. When a character is recorded in 1 or sector 4, the same character code as that recorded before is input in that sector, so that different character code will not be mixed in the same sector Code becomes clear.

When a character code input different from the one recorded before is designated, the character input is prohibited. However, by pressing the operation key for canceling the designation of the character code, the character recorded before is erased. Since it is erased, the mixture of character codes can be prevented, and the character code can be changed.

[0015]

Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing an MD recording / reproducing apparatus which is an embodiment of the present invention. In the figure, 1 is an MD disc. The MD disk 1 is rotated by a disk motor 2 and is overwritably recorded by spot heating by an optical pickup 3 and a modulation magnetic field applied by a magnetic field modulation head 4.

The MD disk 1 also reflects the laser beam emitted from the optical pickup 3, and the reflected light is received by the optical pickup 3 to reproduce a recording signal. Reference numeral 5 is a recording / reproducing signal processing unit. During recording, the recording signal applied to the recording input terminal 8 is supplied to the recording / reproducing signal processing unit 5 after being converted into a digital signal by the A / D converter 6, and the recording / reproducing signal processing unit 5 modulates the signal. Then, signal processing is performed and a modulation signal is applied to the magnetic field modulation head 4.

At the time of reproduction, the recording / reproduction signal processing unit 5 is M
The reproduced signal read from the D disc 1 is demodulated, signal processed, and output to the D / A converter 7. The D / A converter 7 converts the input signal into an analog signal and outputs it to the audio amplifier. Further, the recording / reproducing signal processing unit 5 performs servo control on the disk motor 2 and the optical pickup 3 via a servo circuit (not shown).

Reference numeral 9 is a system controller. The system controller 9 is composed of a microcomputer including a ROM, a RAM and an input / output interface, operates according to a program written in the ROM and a signal input from the key operation unit 10, and is required from the display unit 11. Capture and decrypt external data,
The RAM is used as a working memory while performing arithmetic processing.
If necessary, the processed data is output to the recording / reproducing signal processing unit or the like to control the recording / reproducing operation. The display unit 11 displays a character according to a command from the system controller 9.

The key operation unit 10 is for operating the apparatus and includes operation keys for character recording operation shown in FIG. 2 in addition to normal play keys, recording keys, and stop keys. Reference numeral 19 shown in FIG. 2 is a key for setting the type of character to be input, and the setting keys 19a, 19b and 1
9c. By pressing the setting key 19a, the ASCII code input to the sector 1 of the U-TOC is set. Also, by pressing the setting key 19b, U
The shift JIS code input to the sector 4 of the -TOC is set, and the ISO-8859-1 code input to the sector 4 of the U-TOC is set by pressing the setting key 19c.

Reference numeral 12 is a 16-key, which is used for inputting arithmetic numerals in ASCII code input and ISO-8859-1 code input, and is also used for 4-digit code input in shift JIS code input.

Reference numeral 13 is an enter key, which is a character
Instruct the start and end of code input. Reference numeral 14 is a clear key, which is used to erase the input character and character code. An insert key 15 is a key for creating a new character input space between the characters already input.
Reference numeral 16 denotes a shift key, which is a key for shifting the position of the input character to the right or left. 1
A release key 7 is a key for releasing the character input prohibited state.

Reference numeral 18 is a jog shuttle, which is an ASCI
Used to specify the character of the I code. That is, the outer ring-shaped shuttle 18a is rotated by a certain angle to the left and right to change and specify the type of the character of numbers-uppercase alphabet-lowercase alphabet, and the inner jog 18b is set to 3.
It is possible to rotate by 60 °, and the character is changed and specified in the specified character type.

Next, the character input operation of the magneto-optical disk recording / reproducing apparatus will be described. When the disc is loaded, the system controller 9 reads the data of the sector 1 or sector 4 of the TOC and U-TOC of the MD disc 1 and writes it in the RAM inside the system controller 9.

If the character data is recorded in the sector 1 or the sector 4 of the TOC and U-TOC, the title and music title of the disc are displayed on the display section 11. In addition, the type of the recorded character is also displayed on the display unit 1.
Display in 1. When a character is input to the U-TOC, the character code already recorded or input is given priority.

If a character is input to the sectors 1 and 4 of the U-TOC, the input to the sector 4 is given priority. If no character is input to either sector 1 or sector 4, the ASCII code input to sector 1 is prioritized.

The code input set with priority as described above can be set to another one by the character setting key 19. Setting key 19a, 19b or 19c
When any one of the keys is pressed and then the enter key 13 is pressed for 1 second or more, the input state of the sector and character code of the pressed setting key is different, but different from the already recorded code of sector 4. When the code is set, an alarm is displayed on the display unit 11 to prohibit the input with the code.

In this case, when the release key 17 is pressed, the prohibited state is released and the character already recorded in the sector 4 is erased. When inputting a music title to an arbitrary TNO, the TNO desired to be input is searched by the key operation unit 10 and the TNO is designated as a pause state at the head of the TNO. T
When NO is designated, if there is a character input to that TNO, it is displayed on the display unit 11. It is possible to input a character in the blinking part of the displayed character. Also, when no character is input, it is possible to input in the blinking part of the space.

The set character code is AS
If it is a CII code, a character group is selected by the shuttle 18a and a character is selected from the character group selected by the jug 18b. When the character is decided, the character is moved to the next by the shift key 16 and the next character is selected. When all the characters have been input in this manner, the enter key 13 is pressed again for 1 second or longer to confirm the song name of the TNO.

If the set character code is a shift JIS code, a four-digit code is input by the 16 key 12 and the enter key 13 is pressed for a short time, so that the character of the code is displayed on the display section 11. If the displayed character is different from the desired character, the clear key 14 is pressed to erase it and re-input. If the displayed character is the desired one, use the shift key 16 to shift to the next
Wait for digit code input. When all the characters have been input in this manner, the enter key 13 is pressed again for 1 second or longer to confirm the song name of the TNO. The position of the character being input is blinking. In this way, song titles can be input or rewritten one after another in any TNO.

[0030]

According to the magneto-optical disk recording / reproducing apparatus of the present invention, it is possible to arbitrarily set a character to be input and to recognize the type of the character even if it has already been set. Further, since the input with the same character code as the already recorded character has priority, it is convenient.

[Brief description of drawings]

FIG. 1 is a block diagram showing an MD recording / reproducing apparatus that is an embodiment of the present invention.

FIG. 2 is a front view showing a part of a display section of the MD recording / reproducing apparatus.

[Explanation of symbols]

 1 MD disk 2 disk motor 3 optical pickup 4 magnetic field modulation head 5 recording / reproducing signal processing unit 6 A / D converter 7 D / A converter 8 recording input terminal 9 system controller 10 key operation unit 11 display unit 12 16 key 13 enter key 14 Clear key 15 Insert key 16 Shift key 17 Release key 18 Jog / Shuttle 19 Character setting key

Claims (4)

[Claims] 1. A magneto-optical disk recording / reproducing apparatus capable of recording characters in sectors 1 and 4 in a U-TOC of a magneto-optical disk, wherein an operation key for designating a type of character to be recorded or a sector is provided. Magneto-optical disk recording / reproducing device. 2. The magneto-optical disk recording / reproducing apparatus according to claim 1, wherein when there is a character already recorded in the sector 4 in the U-TOC, the character input of the character code is automatically performed. A magneto-optical disk recording / reproducing apparatus characterized by being set to. 3. The magneto-optical disk recording / reproducing apparatus according to claim 1, wherein when there is a character already recorded in the sector 4 in the U-TOC, an input with a character code different from the character code is set. A magneto-optical disk recording / reproducing device configured to display an alarm when input is prohibited and prohibit character input. 4. The magneto-optical disc recording / reproducing apparatus according to claim 3, further comprising an operation key for canceling the state when an alarm is displayed and character input is prohibited, and the key is depressed, The specified character
A magneto-optical disk recording / reproducing apparatus configured to permit the input of a code and erase the already recorded character of sector 4.