JP3559944B2 - Disk recording and playback device - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a disk recording / reproducing device.
[0002]
[Prior art]
As a conventional disk recording / reproducing apparatus, for example, there is a recording / reproducing apparatus for an MD (mini disk). The MD disc has a recording area for recording an audio signal such as a song and a UTOC area in which character data related to the audio signal such as a title of the song can be recorded. Character data can be recorded in sector 1 and sector 4 of the UTOC.
In such a conventional optical disk recording / reproducing apparatus, for example, the same character (American Standard Code for Information Interchange) code is simultaneously recorded in sector 1 and sector 4 of the MD UTOC by key input of katakana characters. At the time of display, the recorded English characters are converted into katakana and displayed (see JP-A-8-36868), or different character data can be individually recorded in sector 1 or sector 4, for example, in sector 1 Can record hiragana character data in sector 4, read data in sector 1, and read kanji data in sector 4 (see JP-A-6-338182). there were.
[0003]
However, in the former, the character data actually recorded on the disk is ASCII characters of English characters, and in a device without a function of converting the English characters into katakana characters, the character data is input in katakana. It could only be displayed in English characters. In the latter case, character data must be manually input for each sector.
[0004]
[Problems to be solved by the invention]
SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned conventional problems and to provide a disk recording / reproducing apparatus which can effectively use character data recorded on a disk.
[0005]
[Means for Solving the Problems]
A disk recording / reproducing apparatus according to the present invention records and reproduces a disk having a first recording area for recording an audio signal and a second recording area including first and second sectors capable of recording character data. In the recording / reproducing apparatus, when character data of a predetermined code is recorded in one of the first and second sectors, the character data recorded in one sector is read and the predetermined code and There is provided a means for converting to a different code and recording the converted code in the other sector. (Claim 1)
[0006]
Also, a disk recording / reproducing apparatus according to the present invention records and reproduces a disk having a first recording area for recording an audio signal and a second recording area including first and second sectors capable of recording character data. When katakana character data is recorded in one of the first and second sectors, the katakana character data recorded in one of the sectors is read, and the katakana character is read. There is provided a means for converting into hiragana character data having the same content as the data , and recording the converted hiragana character data in the other sector. (Claim 2)
[0008]
Also, a disk recording / reproducing apparatus according to the present invention records and reproduces a disk having a first recording area for recording an audio signal and a second recording area including first and second sectors capable of recording character data. in the disk recording and reproducing apparatus which, during the input of character data, if the input character data includes Chinese characters on one sector of said first and second sectors, when recording the text data including the Kanji at the same time, the other In the sector, the character data including the kanji is converted into character data that has the same content as the input character data and includes the kanji reading kanji based on the reading kanji during the kanji input. Means for recording character data including the converted kanji readings. (Claim 3 )
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 is a block diagram showing one embodiment of a disk recording / reproducing apparatus according to the present invention.
In FIG. 1, 1 is an MD disk, 2 is a disk motor, 3 is an optical pickup, 4 is a head, 5 is a recording / reproduction signal processing unit, 6 is an A / D converter, 7 is a D / A converter, and 8 is a recording input. Reference numeral 9 denotes a reproduction output terminal, 10 denotes a system controller composed of a microcomputer or the like, 11 denotes a display unit, and 12 denotes a key operation unit.
[0010]
The MD disk 1 reflects a laser beam emitted from the optical pickup 3 and the reflected light is received by the optical pickup 3 to reproduce a recording signal.
[0011]
At the time of recording, the recording signal applied to the recording input terminal 8 is converted into a digital signal by the A / D converter 6 and supplied to the recording / reproducing signal processing unit 5, and the recording / reproducing signal processing unit 5 modulates the signal. Then, a modulation signal is applied to the recording magnetic head 4.
[0012]
At the time of reproduction, the recording / reproduction signal processing unit 5 demodulates the reproduction signal read from the MD disc 1, performs signal processing, and outputs the signal to the D / A converter 7. The D / A converter 7 converts the input signal into an analog signal, and outputs the analog signal to a subsequent amplifier (not shown) via the reproduction output terminal 9.
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).
[0013]
The display unit 11 reads character data recorded in the sector 1 or sector 4 of the UTOC of the MD disc 1 under the control of the system controller 10 and displays the characters processed by the recording / reproducing signal processing unit 5. it can.
The key operation unit 12 includes a plurality of keys for instructing various operations of the apparatus, and includes a conversion key described below in addition to a normal reproduction key, a recording key, a stop key, and the like.
[0014]
In the above configuration, a command to convert between sectors is input to the system controller 10 by operating the conversion key of the key operation unit 12.
At this time, if character data has already been input to only one of the sectors 1 or 4 of the UTOC of the MD disk 1, the character data is converted into a code suitable for the other sector and converted. Is performed in the other sector.
[0015]
This inter-sector conversion process includes a “sector 1 → sector 4 conversion” process (hereinafter referred to as mode 1) when character data is already recorded in sector 1, and a conversion process when character data is already recorded in sector 4. There is a “sector 4 → sector 1 conversion” process (mode 2).
[0016]
The above-described inter-sector conversion processing operation will be described with reference to the flowcharts shown in FIGS.
FIG. 2 is a flow chart of the mode 1 conversion processing. First, in S1, the character data of the sector 1 of the UTOC recorded on the MD disk 1 is read. Then, in S2, it is determined whether there is no character data in the sector 1 or not. The controller 10 makes a determination. If the answer is yes, the operation ends, and if the answer is no, the process proceeds to S3.
In S3, the system controller 10 determines whether code conversion (ASCII → Shift JIS conversion) of character data by the read ASCII code is possible, and if possible, in S4, executes ASCII → Shift JIS conversion for each character. If it is not possible, in S5, it is changed to a substitute character (for example, a space).
After S4 or S5, in S6, the character data converted into the shift JIS code is written in the sector 4, and the operation is completed.
[0017]
Next, FIG. 3 is a flowchart of the mode 2 conversion processing. First, in S11, the character data of the UTOC sector 4 recorded on the MD disk 1 is read. Then, in S12, it is determined whether there is no character data in the sector 4. If yes, the operation ends, and if no, the process proceeds to S13.
In S13, the system controller 10 determines whether code conversion of character data by the read shift JIS code (shift JIS → ASCII conversion) is possible, and if possible, in S14, executes shift JIS → ASCII conversion for each character. If it is not possible, in S15, it is changed to a substitute character (for example, a space).
After S14 or S15, in S16, the character data converted into the ASCII code is written in the sector 1, and the operation is completed.
[0018]
As described above, when character data has already been input to one of the sector 1 and the sector 4, the input character data is automatically converted into a code, so that it can be effectively used as character data of another sector. Can be used.
[0019]
Next, when an instruction to convert between katakana and hiragana sectors is input to the system controller 10 by operating the conversion key of the key operation unit 12, if katakana character data is already input to sector 1, the katakana character The data is converted to Hiragana character data and recorded in sector 4.
[0020]
The above conversion processing operation will be described based on the flowchart shown in FIG.
First, in step S21, the character data of sector 1 is read, and then in step S2, it is determined whether or not the data is katakana character data. If no, the operation ends, and if yes, the process proceeds to step S23.
At S23, katakana to hiragana conversion is performed for each character, and then at S24, the converted hiragana character data is written to sector 4, and the operation is terminated.
[0021]
As described above, when katakana character data has already been input to sector 1, the input katakana character data is automatically converted to hiragana, so that the data can be effectively used as character data of sector 4.
Here, when an instruction to convert between katakana and hiragana sectors is input to the system controller 10 by operating the conversion key of the key operation unit 12, if character data has already been input to the sector 4, similarly, The hiragana character data is converted into katakana character data and recorded in sector 1.
[0022]
Next, when the character data is displayed by operating the conversion key of the key operation unit 12 or the like, if the character data exists in both the sector 1 and the sector 4, the character data in the sector 4 is prioritized. To be displayed.
[0023]
The above operation will be described based on the flowchart shown in FIG.
First, in S31, it is determined whether or not there is character data in the sector 4. If yes, the process proceeds to S32, where the character data in the sector 4 is processed and displayed on the display unit 11, and the operation is completed.
If the answer to S1 is NO, the process proceeds to S33, where it is determined whether or not there is character data in sector 1.
If the answer to S33 is yes, the process proceeds to S34, where the character data of sector 1 is processed and displayed on the display unit 11, and the operation is completed.
If the answer to S33 is NO, the process proceeds to S35, for example, "NO TITLE" or the like is displayed on the display unit 11, and the operation is completed.
[0024]
The character data of the sector 4 of the MD disk 1 can include the character data of the sector 1 and also have the kanji data.
Therefore, if there is data of the sector 4, by automatically giving priority to the display of the sector 4, high value-added display can be performed, and the trouble of switching the display can be omitted.
[0025]
Next, when a command for converting between kanji and reading sectors is input to the system controller 10 by operating the conversion key of the key operation unit 12, the reading when inputting kanji to the sector 4 in Japanese input is performed. Is converted into character data of sector 1 and used.
[0026]
The above operation will be described based on the flowchart shown in FIG.
First, in S41, character data is input to sector 4, and then in S42, it is determined whether or not the input character data is a kanji input. If yes, the corresponding reading data is read in S43, and then S44. Then, in S45, the reading data is written in sector 1 in ASCII code data in S45.
Simultaneously with the operations of S43 to S45, kanji conversion is executed in S46, then converted to shift JIS code in S47, and kanji data is written to sector 4 in S48 in S48.
[0027]
On the other hand, if the answer in S42 is no, in S49, the input character data in S41 is converted into ASCII code, and then, in S50, the character data in ASCII code is written in the sector 1.
At the same time as the operations of S49 to S50, the input character data of S41 is converted into the shift JIS code in S51, and then the input character data is written in the sector 4 in S52 with the shift JIS code in S52.
[0028]
As described above, the input character data is simultaneously recorded in the sector 1 and the sector 4, the character data including the kanji is recorded in the sector 4, and the character having the same content as the sector 4 but not including the kanji is recorded in the sector 1. Since the data is recorded, for example, even if the person who records the sector data inputs a difficult kanji and the other person cannot read the kanji, the character data of the sector 1 is read out and displayed on the display unit 11 for reading. Can be.
[0029]
【The invention's effect】
According to the present invention, character data recorded on a disk can be used effectively.
[Brief description of the drawings]
FIG. 1 is a block diagram showing one embodiment of a disk recording / reproducing apparatus according to the present invention.
FIG. 2 is a flowchart illustrating the operation of the block diagram of FIG. 1;
FIG. 3 is a flowchart illustrating the operation of the block diagram of FIG. 1;
FIG. 4 is a flowchart illustrating the operation of the block diagram of FIG. 1;
FIG. 5 is a flowchart illustrating the operation of the block diagram of FIG. 1;
FIG. 6 is a flowchart illustrating the operation of the block diagram of FIG. 1;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 MD disk 2 Disk motor 3 Optical pickup 4 Recording magnetic head 5 Recording / reproduction signal processing part 6 A / D converter 7 D / A converter 8 Recording input terminal 9 Reproduction output terminal 10 System controller 11 Display part 12 Key operation part

Claims (3)

In a disc recording / reproducing apparatus for recording / reproducing a disc having a first recording area for recording an audio signal and a second recording area including first and second sectors capable of recording character data, the first and the second When character data of a predetermined code is recorded in one of the two sectors, the character data recorded in one sector is read and converted into a code different from the predetermined code, and the converted code is read. A disc recording / reproducing apparatus comprising means for recording data in the other sector. In a disc recording / reproducing apparatus for recording / reproducing a disc having a first recording area for recording an audio signal and a second recording area including first and second sectors capable of recording character data, the first and the second If katakana character data is recorded in one of the two sectors, the katakana character data recorded in one sector is read and converted to hiragana character data having the same content as the katakana character data , A disk recording / reproducing apparatus comprising means for recording converted hiragana character data in the other sector. In a disk recording / reproducing apparatus for recording / reproducing a disk having a first recording area for recording an audio signal and a second recording area including first and second sectors capable of recording character data, when character data is input If the input character data includes kanji, the character data including the kanji is recorded in one of the first and second sectors, and the other sector has the reading when the kanji is input. Based on what, the character data including the kanji is converted into character data having the same content as the input character data and including the kanji reading, and the converted kanji reading is included. A disk recording / reproducing apparatus comprising means for recording character data.

Images