JP3465284B2 - Sound reproduction device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reproducing apparatus capable of reproducing acoustic data such as music recorded on a recording medium such as a disk or tape.

[0002]

2. Description of the Related Art As a reproducing device capable of reproducing music and the like, a reproducing device using a magneto-optical disk for recording an audio signal as a digital signal or a magnetic tape as a recording medium is known. In particular, in recent years, as a magneto-optical disk, a disk (so-called mini disk) that allows a user to record a voice such as music as well as reproduction is known,
In the case of this mini disc, the title (album name) of the disc and the song name etc. of the previously recorded song or the song recorded by the user can be recorded as character information. The display section provided can display a disc title, a song title, an artist name, and the like.

[0003]

However, taking the case of a mini disc as an example, normally, it is possible to record characters as character information on a disc by using a character by ASCII code (ASCII-CODE) shown in FIG. It is a sequence, that is, only letters, numbers and certain symbols.

Of course, it is possible to code characters other than ASCII, such as kana and kanji, and record them on the disc, but in this case, in the recording / reproducing device, a character font, a kanji dictionary, conversion, etc. A huge amount of software for processing and the like, and sufficient hardware for operating the software must be additionally installed, resulting in an increase in cost as a recording device / reproducing device.
In some cases, it may be necessary to change the format, so it is virtually unlikely to be realized only in high-end models.

Therefore, in general, a mini disk recording / reproducing apparatus handles only character information by ASCII code. However, when displaying Japanese character information, it becomes very difficult to read. There is often the problem. For example, if you record a song called “Kawa no Nagare no Ito” on a disc with the ASCII code of this song name, it will be “KAWANONAGARENOYOUNI” in roman letters. If you try to display it during playback, it will be displayed in Roman letters as it is, so it will be very difficult to read, and the function as a song title display will not be fully utilized.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is an object of the present invention to make it easier for a user to read a character display such as a song title.

Therefore, according to the present invention, a data area in which one or more units of information are recorded, a recording position of one or more units of information recorded in the data area, and one or more units recorded in the data area. A sound reproducing device for reproducing character information relating to a plurality of units of information on a recording medium composed of a management area in which a first character type is recorded, which is represented by the first character type reproduced from the management area. conversion means for converting the character string a character string expressed in the second character type was, the character string represented by the first character type that can be converted to a string that will be represented by the second character type Display means for discriminating whether or not it is a format, display means for displaying character information, and display by the first character type reproduced from the management area.
It is determined that the expressed character string can be represented by the second character type.
If judged by another means, the above conversion to the above display means
Characters expressed by the above-mentioned second character type converted by means
Control the columns to be displayed and played from the management area above.
The character string represented by the first character type
When it is judged by the above-mentioned discrimination means that it cannot be expressed by the character type
Is displayed in the first character type reproduced from the management area.
Control so that the displayed character string is displayed on the above display means
So that and a display control means for.

The present invention also provides the above sound reproducing device.
And displays the character information in the first character type on the display means.
Or an operation method that can select whether to display in the second character type.
Be prepared for

The first character type is ASCII character.
Suppose it is a code. The second character type above is katakana, hi
It is assumed to be in Japanese or Hangul characters.

[0010]

With respect to the recording medium in which the character information indicating the song title or the like of each voice information such as music is recorded in the predetermined area by the first character type, the reproducing device side converts the character information into the first character information as necessary. By converting to the character type of 2 and displaying it,
It is possible to improve the readability of display characters by the user. For example, when a Japanese music title is recorded in the Roman character format, it may be converted into Kana characters and displayed, and this is executed by the display control means in the reproducing apparatus.

[0011]

Embodiments of the sound reproducing apparatus of the present invention will be described below. First, the construction of a recording / reproducing apparatus as an embodiment will be described with reference to FIGS. 1 and 2, and subsequently, with reference to FIGS. The management data written as TOC information on the magneto-optical disc corresponding to this recording / reproducing apparatus will be explained, and then,
The operation of various embodiments will be described with reference to FIGS.

This embodiment is an acoustic recording / reproducing apparatus using a magneto-optical disk (mini disk) as a recording medium.
2 is a block diagram of a main part of the recording / reproducing apparatus, and FIG. 2 is a plan view showing an appearance. In FIG. 1, reference numeral 1 denotes, for example, a magneto-optical disk (or optical disk) on which a plurality of musical pieces (audio data) are recorded, which is rotationally driven by a spindle motor 2. An optical head 3 irradiates the magneto-optical disk 1 with a laser beam during recording / reproduction, which provides a high level laser output for heating the recording track to the Curie temperature during recording, and the magnetic Kerr effect during reproduction. It provides a relatively low level laser power for detecting data from reflected light.

Therefore, the optical head 3 is equipped with a laser diode as a laser output means, an optical system including a polarization beam splitter and an objective lens, and a detector for detecting reflected light. The objective lens 3a is 2
It is held by a shaft mechanism 4 so as to be displaceable in the disk radial direction and the direction in which it comes in and out of contact with the disk, and the entire optical head 3 is movable by a sled mechanism 5 in the disk radial direction.

Reference numeral 6 denotes a magnetic head for applying a magnetic field modulated by the supplied data to the magneto-optical disk, which is arranged at a position facing the optical head 3 with the magneto-optical disk 1 interposed therebetween.

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 supplied information by reproducing RF signals, tracking error signals, focus error signals, and absolute position information (absolute position information recorded as pregrooves (wobbling grooves) on the magneto-optical disk 1). Address information, subcode information,
The focus monitor signal and the like are extracted. 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. Further, the focus monitor signal is supplied to the system controller 11 configured by, for example, a microcomputer.

The servo circuit 9 generates various servo drive signals according to the supplied tracking error signal, focus error signal, track jump command, seek command, rotational speed detection information from the system controller 11, etc. The sled mechanism 5 is controlled to perform focus and tracking control, and the spindle motor 2 is controlled to a constant angular velocity (CAV) or a constant linear velocity (CLV).

The reproduced RF signal is sent to the encoder / decoder unit 8
Then, the EFM demodulation and the decoding process such as CIRC are performed, and the data is temporarily written in the buffer RAM 13 by the memory controller 12. The reading of data from the magneto-optical disk 1 by the optical head 3 and the reproduction data transfer from the optical head 3 to the buffer RAM 13 are performed at 1.41 Mbit / sec (intermittently).

The data written in the buffer RAM 13 is read at a timing at which the reproduction data is transferred at 0.3 Mbit / sec and supplied to the encoder / decoder section 14. Then, a reproduction signal process such as a decoding process for the audio compression process is performed, an analog signal is formed by the D / A converter 15, and the analog signal is supplied from a terminal 16 to a predetermined amplification circuit section and reproduced and output. For example, it is output as L and R audio signals.

The absolute position information obtained by decoding the pregroove information output from the address decoder 10 or the address information recorded as data is transmitted via the encoder / decoder unit 8 to the system controller 1
1 and is used for various control operations. further,
The lock detection signal of the PLL circuit that generates the bit clock for the recording / reproducing operation and the monitor signal of the missing state of the frame synchronization signal of the reproduction data (L and R channels) are also supplied to the system controller 11.

When the recording operation is performed on the magneto-optical disk 1, the recording signal (analog audio signal) supplied to the terminal 17 is converted into digital data by the A / D converter 18, and then the encoder. / It is supplied to the decoder unit 14 and subjected to audio compression encoding processing. The recording data compressed by the encoder / decoder unit 14 is temporarily buffered by the memory controller 12 in the buffer RAM 1
3 is read out at a predetermined timing and sent to the encoder / decoder unit 8. Then, the encoder / decoder unit 8 performs encoding processing such as CIRC encoding and EFM modulation, and then supplies it to the magnetic head drive circuit 24 .

The magnetic head drive circuit 24 supplies a magnetic head drive signal to the magnetic head 6 in accordance with the encoded recording data. That is, the N or S magnetic field is applied to the magneto-optical disk 1 by the magnetic head 6. Further, at this time, the system controller 11 supplies a control signal to the optical head 3 so as to output a laser beam of a recording level.

Although the reproducing operation has been described with respect to the magneto-optical disk 1, an optical disk in which data is recorded in a pit form like a CD can be reproduced as a so-called mini disk reproducing device. in this case,
The optical head does not take out the magnetic Kerr effect but takes out a reproduction RF signal according to a change in the reflected light level depending on the presence or absence of a pit as in the case of a CD player. Of course, the magnetic field recording operation is not performed on the optical disc.

Reference numeral 19 denotes an operation input section provided with keys used for user operation, and 20 denotes a display section composed of, for example, a liquid crystal display. As the operation input section 19, as shown in FIG. 2, the recording key 5 is displayed so as to appear on the device housing.
1, play key 52, pause key 53, stop key 54,
An AMS key 55, a search key 56, a song name input mode key 57, a disc name input mode key 58, a date input mode key 59, a numeric keypad 61, a display mode key 62, an enter key 63, etc. are provided for user operation. ing. Each of the numeric keys of the ten-key pad 61 corresponds to three or two alphabets or spaces, which are used when inputting characters. The display unit 20 is also arranged on the upper surface of the housing.

Further, in FIG. 1, 21 is a kana conversion unit, 2
Reference numeral 2 indicates a switching unit. As will be described later, character information based on ASCII code is recorded on the magneto-optical disk 1, and the system controller 11 can read this and display it on the display unit 20, but the Kana conversion unit 21 displays it from the system controller 11. Regarding the character information to be output to the unit 20 as display data, it is configured so that the characters in the Roman alphabet format by the alphabet (ASCII code) can be converted into Kana, and the switching unit 22 converts the character information by ASCII code. An operation for selecting and switching between supplying and displaying as it is to the display unit or supplying and displaying character information by kana converted by the Kana conversion unit 21 to the display unit is performed (note that the Kana conversion unit 21 Although the switching unit 22 and the switching unit 22 are shown as circuit blocks, these are actually system control units. Constituted by the software means of La 11).

Reference numeral 23 denotes T in the magneto-optical disk 1.
It is a RAM that holds OC information (hereinafter referred to as TOC memory). The discs to which the recording / reproducing apparatus of this embodiment is compatible are pre-mastered types (optical discs) on which music and the like are recorded in advance and data rewritable discs on which the user can record music data ( There is a hybrid type with a magneto-optical disk) and a ROM area in which music and the like are recorded in advance and a magneto-optical area in which recording is possible, and data such as music is already recorded on these disks according to the type. Data for managing the existing area and the unrecorded area are recorded as TOC information.

At the time of loading the magneto-optical disk 1 or immediately before the recording or reproducing operation, etc.
The system controller 11 drives the spindle motor 2 and the optical head 3 to extract the data of the TOC area set on the innermost side of the magneto-optical disk 1, for example. Then, the RF amplifier 7 and the encoder / decoder unit 8
The TOC information supplied to the memory controller 12 via the is stored in the TOC memory 23, and thereafter used for controlling the recording / reproducing operation for the magneto-optical disk 1.

For example, when trying to record a certain piece of music, unrecorded data on the disc from the user TOC (TOC information area rewritten in response to recording or erasing of a voice signal) which is a part of TOC information. It is designed so that an area can be found and voice data can be recorded here. Further, at the time of reproduction, the area in which the music to be reproduced is recorded is discriminated from the TOC information, and that area is accessed for reproduction operation.

The structure as TOC information is shown in FIGS. FIG. 3 mainly shows music pieces and the like (RO
TOC information about M information) (hereinafter referred to as TOC sector 0), FIG. 4 shows a data area (hereinafter referred to as TOC sector 0) in which character information such as music titles and disc titles recorded on a disc is recorded. , TOC sector 1), and FIG. 5 is a data area (hereinafter referred to as U-TOC sector 0) in which TOC information is mainly recorded about a song recorded by a user and an unrecorded area that can be newly recorded. FIG. 6 shows a data area (hereinafter referred to as U-TOC) in which character information such as a song title and a disc title written by the user is recorded for a song recorded by the user.
Sector 1) is shown.

Each of the data areas shown in FIGS. 3 to 6 is composed of, for example, a data area of 4 bytes × 587, and is composed of 1-byte data of all 0s or alls 1 at the head position to indicate that it is a TOC area. A header with a sync pattern is provided.

For TOC sector 0 in FIG. 3, the disk type, the recording level, and the track number (First TN) of the first recorded music are recorded at a predetermined address position following the header.
O), song number (Last TNO) of the last song, lead-out start address RO _A , power cal area start address PC _A , U-TOC (U-TOC sector 0 in FIG. 6).
Data area), the start address UST _{A of} the recordable area, the start address RST _A of the recordable area, and the like are recorded. A correspondence table instruction data section having P-TNO1 to P-TNO255) is prepared.

In the area following the correspondence table instruction data section, there are 255 parts (01) to (FF) corresponding to the table pointers (P-TNO1 to P-TNO255) in the correspondence table instruction data section. A management table unit provided with a table is prepared. In each parts table, a start address as a starting point for a certain segment (in this case, a segment means a track portion in which data is physically continuously recorded on a track of a disk),
The end address that becomes the end and the mode information of the segment (track) can be recorded.

The mode information of the track in each parts table is information as to whether the segment is set to overwrite inhibition or data copy inhibition, or the like.
Whether or not it is audio information, monaural / stereo type, etc. are recorded.

In each of the parts tables (01) to (FF) in the management table section, the contents of the segment are indicated by the table pointers (P-TNO1 to P-TNO255) in the corresponding table instruction data section. That is, for the first piece of music, a certain parts table (for example, (01) is used as the table pointer P-TNO1.
A certain part table is recorded at a byte position in OC sector 0). In this case, the start address of the part table (01) is the start address of the recording position of the first piece of music, and the end is the same. The address is the end address of the position where the first piece of music is recorded. Further, the track mode information becomes information about the first music piece.

Similarly, for the second song, the parts table (for example (02)) indicated by the table pointer P-TNO2,
The start address, end address, and track mode information of the recording position of the second music are recorded. Similarly, since the table pointers up to P-TNO255 are prepared, it is possible to manage up to the 255th song on the TOC. By forming the TOC sector 0 in this way, a predetermined music piece can be accessed and reproduced at the time of reproduction, for example.

In the TOC sector 1 of FIG. 4, it is possible to record character information corresponding to the disc and the music recorded in advance on the disc and managed by the TOC sector 0 as described above. ing.

That is, similar to the table pointers (P-TNO1 to P-TNO255) in the TOC sector 0, each music recorded as the character table instruction data portion (maximum 25th
Table pointers (P-TNA1 to P-) corresponding to the 5th song)
TNA255), a table for recording the disc name (title), and a table pointer (P-TN
A1 to P-TNA255) is provided for a character table section including 255 parts tables (01) to (FF) for recording disc names or track names (song names).

Album titles and song titles are recorded by ASCII codes in the respective parts tables of the character table section. The parts table in which the character information is recorded is designated by the table pointers (P-TNA1 to P-TNA255), so that it is determined which song the character information corresponds to. For example, table pointer P-
The name of the first song is recorded in the parts table designated by TNA1.

Next, the data area shown in FIG. 5, that is, U-TO.
In C sector 0, a marker code, a model code, and the song number of the first song are placed at a predetermined address position following the header.
(FirstTNO), song number (Last TNO) of the last song, sector usage status, disc serial number, disc ID, and other data are recorded. In addition, the user recorded the recorded song area and unrecorded data. Various table pointers (P-DFA, P-EMPTY, P-FRA, P-TNO1 to P-TNO255) are used as the correspondence table instruction data section in order to identify areas by making them correspond to the management table section described later.
An area for recording is prepared.

Then, corresponding to the table pointers (P-DFA to P-TNO255) of the corresponding table instruction data section, 255 parts tables of (01) to (FF) are provided as the management table section, and each of them is provided. The parts table shows
As with the TOC sector 0, the start address and end address of a certain segment, and the mode information of that segment are recorded, and in the case of this U-TOC sector 0, the segment of each parts table is Since it may be connected to another segment subsequently, link information indicating a parts table in which the start address and end address of the connected segment are recorded can be recorded.

In the case of a mini disk, for example, the data of one music piece is physically discontinuous, that is, even if the data is recorded over a plurality of segments, the reproduction operation is not hindered by reproducing the data while accessing between the segments. The music recorded by the user may be recorded in plural segments for the purpose of efficient use of the recordable area. Therefore, link information is provided and, for example, the part tables to be linked are specified by the numbers (01) to (FF) (actually indicated by the byte position in U-TOC sector 0) given to each part table. By doing so, the parts tables can be connected. (Note that since pieces of music recorded in advance are not usually segmented, the link information in the TOC sector 0 is all "(00)" as shown in FIG. 3).

That is, in the management table section in the U-TOC sector 0, one part table represents one segment, and, for example, a music piece formed by connecting three segments is linked by link information. The segment position is managed by the three parts tables.

Each of the parts tables (01) to (FF) in the management table section of the U-TOC sector 0 has a table pointer (P-DFA, P- in the corresponding table instruction data section).
EMPTY, P-FRA, P-TNO1 to P-TNO255) indicate the contents of the segment as follows.

The table pointer P-DFA is shown for a defective area on the magneto-optical disk 1, and a track portion (= segment) which becomes a defective area due to a scratch or the like is shown.
One part table or the first part table in multiple part tables is specified. In other words, if there is a defective segment in the table pointer P-DFA
Any one of (01) to (FF) is recorded, and the defective segment is indicated by the start and end addresses in the parts table corresponding thereto. Further, when there is another defective segment, another part table is designated as the link information in the part table, and the defective segment is also shown in the part table. Then, if there is no other defective segment, the link information is, for example, "(00)", and thereafter there is no link.

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 there is an unused part table, the table pointer P-EMPTY is used as the table pointer P-EMPTY. , (01) to (FF) is recorded. If there are multiple unused part tables, the part tables specified by the table pointer P-EMPTY are used to sequentially specify the part tables by link information, and all the unused part tables are linked on the management table section. To be done.

For example, in the case of a magneto-optical disk in which audio data such as music is not recorded at all and there is no defect, the parts table is not used at all, so that the parts table (01) is read by the table pointer P-EMPTY, for example. The part table (02) is specified as the link information of the part table (01), the part table (03) is specified as the link information of the part table (02), and so on until the part table (FF). Be connected. In this case, the link information of the parts table (FF) is set to “(00)” indicating that there is no connection thereafter.

The table pointer P-FRA indicates a writable unrecorded area (including an erased area) on the magneto-optical disk 1, and a track portion (= segment) to be the unrecorded area is indicated. The top parts table in one or more parts tables is specified. That is, if there is an unrecorded area, the table pointer P-FR
Any one of (01) to (FF) is recorded in A, and a segment which is an unrecorded area is indicated by the start and end addresses in the parts table corresponding thereto. Further, when there are a plurality of such segments, that is, when there are a plurality of parts tables, the link information is used to sequentially specify the parts table having the link information of "(00)".

FIG. 7 schematically shows the management state of the segment which is the unrecorded area by the parts table. This is because when the segment (03) (18) (1F) (2B) (E3) is an unrecorded area, this state continues to the corresponding table instruction data P-FRA and the parts table (03) (18) (1F). ) (2B) (E3) shows the state represented by the link. The defective area and the unused parts table management mode described above are the same.

The table pointers P-TNO1 to P-TNO255 indicate music pieces recorded by the user on the magneto-optical disk 1. For example, in the table pointer P-TNO1, one or a plurality of pieces of data in which the first music piece is recorded are recorded. A parts table indicating the temporally first segment of the segments is specified.

For example, the first song is not divided into tracks on the disc (that is, one segment).
When recorded, the recording area of the first music piece is recorded as the start and end addresses in the parts table indicated by the table pointer P-TNO1.

Further, for example, when the second music piece is discretely recorded in a plurality of segments on the disc, each segment is designated in a temporal order in order to indicate the recording position of the music piece. That is, from the parts table designated by the table pointer P-TNO2, further parts tables are sequentially designated by the link information according to the temporal order, and the parts table having the link information of "(00)" is linked. (The above-mentioned form similar to FIG. 7). Thus, for example, all the segments in which the data constituting the second music is recorded are sequentially designated and recorded, so that the data of the U-TOC sector 0 is used to reproduce the second music or the second music. When overwriting the area (1), it becomes possible to access the optical head 3 and the magnetic head 6 to take out continuous music information from discrete segments, and to perform recording using the recording area efficiently.

In the area of U-TOC sector 1 of FIG.
The user makes a recording, and character information can be recorded corresponding to each music piece managed in the U-TOC sector 0.

That is, like the table pointers (P-TNO1 to P-TNO255) in the U-TOC sector 0, the table pointers corresponding to the respective music pieces (up to the 255th music piece) recorded as the character table instruction data portion. (P-TNA1
~ P-TNA255), and a table and table pointer (P-TN) for recording disc names (titles).
A1 to P-TNA255) is provided for a character table section including 255 parts tables (01) to (FF) for recording disc names or track names (song names).

Album titles and song titles are recorded by ASCII codes in the respective parts tables of the character table section. The parts table in which the character information is recorded is designated by the table pointers (P-TNA1 to P-TNA255), so that it is determined which song the character information corresponds to. For example, table pointer P-
The name of the first song is recorded in the parts table designated by TNA1.

As described above, since the area of the U-TOC sector 1 for holding the character information such as the song name and disc name (album title) of the song corresponding to the song recorded by the user is provided, the user You can also write the song name, etc., of the song you recorded by yourself in association with the song. For example, when the user operates the ten-key pad 61 of the operation unit 19 or the like to input alphabetic character information at the time of recording, the character information is written in the TOC area of the magneto-optical disk 1. If the character input by the user has a length that cannot be recorded by only one parts table, it will be recorded over a plurality of parts tables, and this state is managed by the link information.

It should be noted that the TOC sector 0 and the TOC sector 1 do not need to be rewritten, so that RO
M-data is recorded on the disc, while U-TOC sector 0 and U-TOC sector 1 are recorded on the disc as magneto-optical data because the data needs to be rewritten every time the user performs an operation such as recording or erasing. There is. Of course, the pre-mastered type (optical disc) does not have U-TOC sector 0 and U-TOC sector 1.

The recording / reproducing apparatus of the present embodiment for the magneto-optical disc 1 (or optical disc) on which such TOC information is recorded manages the recording area on the disc using the TOC information read in the TOC memory 23. Recorded /
Control the playback operation.

In particular, for the display unit 20, the TO
Information such as numbers and characters read as C information can be displayed. For example, at the time of disc reproduction, the information in the TOC area is read when the magneto-optical disc 1 is loaded in the recording / reproducing apparatus.
The character information written in the user TOC area is read out together with the management data and the character information stored in the ROM.
It is taken into the OC memory 23. Therefore, the system controller 11 reads out the music title from the TOC memory 23 according to the music being reproduced, and displays it on the display unit 2
At 0, it can be displayed by characters, numerical values, etc.

Hereinafter, first to fourth embodiments will be described with reference to FIGS. 8 to 11 as a method of displaying character information realized in the recording / reproducing apparatus having such a configuration (the configurations described above in each example). Is the same).

The display of the character information is performed on the display unit 20. For example, when the system controller 11 controls the display unit in the character display mode during the reproducing operation, the music regarding the music being reproduced is displayed. The song name is displayed until the end of the song, the song name is displayed only for a predetermined time from the start of the song, or the user can perform a predetermined operation to display the disc name or recorded song name regardless of playback. In some cases, the system controller 11 will be described below as the display unit 20.
The operation of each embodiment will be described as a process for executing the character display in FIG.

FIG. 8 is a flow chart of the control processing of the system controller 11 which is the operation of the first embodiment.
When the character display such as the title of the music being reproduced is executed on the display unit 20 (F101), the system controller 1
1 reads the character information from the TOC memory 23 (F10
2), the data is supplied to the display unit 20 as display data, but here, the processing differs depending on whether or not the current display is in the kana display mode by the operation of the display mode key 62 by the user (F103). .

If the display mode is not the kana display mode but the normal display mode, the display data based on the read ASCII code is supplied to the display unit 20 as it is, and character display by the alphabet or the like is executed (F105). In a block view in FIG. 1, the switching unit 22 is connected to the A terminal, and the display data is displayed without the Kana conversion unit 21.
Will be supplied to.

Then, for example, when the music is reproduced, the music is ended, or the display is switched to another display such as the reproduction progress time display based on the user operation or the operation program. Characters such as alphabets are displayed until the time to end (F
106).

On the other hand, when the display mode is the kana display mode, the TOC memory 2 is used as character information to be displayed.
It is determined whether or not the character string based on the ASCII code imported from 3 can be converted into Kana (F104). That is, it is determined whether the character string is in the Roman character format. If it is not in the Roman character format, the process proceeds to step F105, and the display in the alphabet or the like is executed as it is.

If the character string can be converted into kana, it is converted into display data in kana and supplied to the display unit 20 (F107) . In a block diagram in FIG. 1, the switching unit 2
2 is connected to the K terminal, the character string by the ASCII code is converted into display data by kana in the kana conversion section 21, and then the display data is supplied to the display section 20. Then, until the display is completed (F108), the characters are displayed in kana.

By the above processing, the character information is displayed as in the following example. For example, "STEP BY STEP"
Considering the character information stored in the TOC as "KAZE NO KUNI", "STEP B
"Y STEP""KAZE NO KUNI" is displayed (F103 → F105)
. If the Kana display mode is set, the former cannot be converted to Kana in English format, so "STEP BY
Although it is displayed as “STEP” (F104 → F105), the latter can be converted to Kana and converted to Kana because it can be converted to Kana in Roman characters. Since the former is in English, it is suitable to use the alphabet display as it is, and the latter is in Japanese, so the kana display makes it very easy to read.

Of course, hiragana may be used instead of katakana. For example, if displaying "Kaze no Kuni" is easier to read than katakana, you can configure it so that it is converted to Hiragana.

By the way, in this embodiment, if there is an English character string that is mistaken for the Roman character form and the pronunciation is different when reading the Roman character, some inconvenience occurs. For example, in the case of a character such as "EMOTION", it is mistaken for a Roman form, and in Roman reading, it becomes "Emotion" and is not converted to "Emotion" which is close to the actual pronunciation. Therefore, when the kana display mode is set, "Emochion" is displayed, which is not appropriate.

In this case, in the present embodiment, the mode can be switched during the display, and by switching to the normal mode, "EMOTION" is correctly displayed, but it is more suitable for such a case. The following are the second to fourth embodiments.

FIG. 9 is a flowchart of the control processing of the system controller 11 which is the operation of the second embodiment.
In this flowchart, steps F201 to F206
Since the processing of is similar to the processing of steps F101 to F106 of FIG. 8, the description thereof will be omitted.

In the case of this embodiment, when the kana display mode is set and the character string is in roman character form and can be converted to kana, the character string by the ASCII code is converted to kana. Although it is displayed (F204 →
(F207) The display switching operation (F209) is performed by the user during the display with Kana-converted characters in this way, so that the alphabetic character string can be switched to the ASCII code display (F209 → F210). In addition, when the display is switched to the alphabetic characters, the user can switch the display to the kana character string display by further performing the display switching operation (F212) (F212 →
F207).

That is, until the display end (F208, F211), the user can switch between alphabet display and kana display by a toggle switch operation. As a result, a more suitable display is selected and executed at the user's discretion. As a display switching means, the display mode key 62 or another operation key may be used, or a dedicated display switching key may be provided.

By the way, as a modification of this embodiment, step F203 may be deleted to eliminate the distinction between the normal display mode and the kana display mode. In other words, if the alphabetic character string to be displayed is in Roman letters, it will be automatically displayed in kana, and it will be left to the user to select whether to return to alphabet display or kana display by the display switching operation. It is a thing. In this case, the key 62 for switching the display mode is not necessary and this may be used as the display switching key.

FIG. 10 is a flow chart of the control processing of the system controller 11 which is the operation of the third embodiment. In this flowchart, steps F301, F
The processing of 302, F303, F304, F305 is performed by steps F101, F in FIG.
Since the processing is the same as that of 102, F104, F105, and F106, the description is omitted. That is, the same processing is performed except that the distinction between the normal display mode and the kana display mode is eliminated, and the kana display processing routine is automatically entered if the alphabetic character string to be displayed is in the roman character form. In the embodiment, a processing branch may be provided for distinguishing between the normal display mode and the kana display mode).

In the case of this embodiment, when the character string to be displayed is a character string which can be converted into Kana in the Roman character form,
Although the character string by the ASCII code is converted into kana and displayed (F303 → F306), in this way, in the kana display processing routine, the kana display is started and then the time count is executed, and a certain predetermined value is obtained. Time (eg 3 seconds to 10
It is determined whether or not (for about a second) has elapsed (F308). Kana display continues until a predetermined time has passed, but after the predetermined time has passed, the display switches to alphabet display.
(F308 → F309). Similarly, after the alphabet display is started, the time count is executed, and similarly, it is determined whether or not a predetermined time has elapsed (F311). Then, after a lapse of a predetermined time, the display is switched to kana again (F311 → F306).
.

That is, regarding the character information that can be converted into Kana, until the display of the character information is completed (F307, F310), Kana and the alphabet are displayed while being alternately switched at regular intervals. Become. As a result, readability is realized by proper kana display, and even if an inappropriate kana display such as the above "Emotion" is made, the original "EMOTION" will be displayed immediately, so the song title etc. There is no cognitive problem.

It should be noted that, by combining the third embodiment and the second embodiment, the initial kana and the alphabet are automatically displayed alternately for a predetermined time, but one is fixed according to the user's operation. After that, it is conceivable that the kana and the alphabet can be switched alternately by the display switching operation by the user.

FIG. 11 is a flow chart of the control processing of the system controller 11 which is the operation of the fourth embodiment. In this flowchart, steps F401, F
The processing of 402 is the same as the processing of steps F101 and F102 in FIG.

In this embodiment, when the character information is recorded in advance on the TOC sector 1 or the U-TOC sector 1 of the disc, the character is displayed as ASCII characters or the kana conversion is performed to display the character information. I identify whether to do
Kana display processing is performed based on the addition of a special character string D.

For example, as the ID character string, a character string "JJJ" which is not normally used in the alphabet is set. Then, for the character information to be displayed in kana, the ID character string "JJJ" is added to the TOC sector 1 (by the disc manufacturer) or the U-TOC sector 1 (when the user records). Keep a record. For example, if you want to record the characters "Like Kawano Nagare", of course, TOC recording is performed with ASCII code, so "KAWANONAGARENOYO
Enter "UNI", but at this time, "JJKK"
"AWANONAGARENOYOUNI". On the other hand, if you want to use alphabetical display like "STEP BY STEP", you can use "STEP BY"
Enter "STEP".

If recorded on the TOC in this way,
Appropriate display can be performed by determining whether or not "JJJ" is included in the character string when the display information is captured.

That is, at the time of display, it is determined whether or not the character information fetched in step F403 includes the ID character string "JJJ". If not, the display data is directly displayed as ASCII characters. It is supplied to the display unit 20 and displayed (F404, F405).

On the other hand, if "JJJ" is included, the ASCII character string after "JJJ" is extracted from the character string, the character string is converted to Kana and supplied to the display unit 20 as display data for display. F406, F407). For example, "JJKKA
When the display information "WANONAGARENOYOUNI" is taken in, "KAWANONAGARENOYOUNI", which is an ASCII character string after "JJJ", is converted and displayed like "Kawano Nagarewa".

As a result, the readability of the displayed characters is improved and unnecessary kana conversion display is eliminated. Since the ID character string is also recorded as a part of the character string on the TOC of the disc,
It is not necessary to change the TOC format.

It should be noted that, in addition to determining whether to perform kana conversion display based on the ID character string as described above, the methods of the first, second, and third embodiments and the like are appropriately combined to determine the display mode and the Roman character form. It is conceivable that it is determined whether or not it is displayed, the display is switched between alphabet and kana by a user operation when displaying kana, or it is switched at regular intervals. In particular, in the process of the flowchart of FIG. 11, only the ASCII character display can be executed for a disc to which the ID character string method is not applied, and thus the combination process is actually required.

By the way, in the above description of the embodiment, the ASCII character is described as the first character type and the Japanese kana (hiragana or katakana) is described as the second character type. It is suitable as a device, and various character types can be considered according to the specifications. For example, the second character type can be realized as long as the conversion rule is uniquely determined with respect to the first character type (ASCII character) and can be converted. For example, Hangul characters, Arabic characters, or various symbols. It is also possible to
Further, it goes without saying that the present invention can be adopted when the first character type is other than ASCII characters.

Further, if possible, it is possible to set a plurality of types as the second character type and to configure so that conversion can be performed according to various needs. For example, character information in ASCII characters is converted into any of Hiragana, Katakana, and Hangul characters for display. What kind of character should be converted may be determined by the conversion possibility, the display mode, the ID character string, etc., as in the above embodiment. For example, ID
If you want to display hiragana as a character string, "HHH",
The character type to be displayed can be accurately determined by setting "KKK" for displaying katakana and "NNN" for displaying in Hangul characters.

In the embodiment, the example in which the present invention is adopted in the recording / reproducing apparatus has been described, but it may be a reproduction-only apparatus. Further, the present invention can be applied not only to the magneto-optical disk but also to a reproducing apparatus corresponding to a recordable or ROM type optical disk or a magnetic tape. Further, the present invention can be applied not only to a recording medium in which music is recorded but also to a reproducing device corresponding to a recording medium in which various data are recorded.

[0088]

As described above, according to the sound reproducing apparatus of the present invention, the character information of the first character type to be displayed is changed to the second character information according to the display mode, the conversion possibility, the presence or absence of the ID character string, and the like.
Since it is converted into a character string according to the character type and displayed, it is possible to eliminate the display that is difficult to read due to the difference in the language and the used character type, and it is possible to improve the degree of recognition of the character display by the user. Moreover, for this reason, there is no need to change the character information recording format of the recording medium or to increase the load on both the software and hardware side by recording other character types on the recording medium. I can't keep up. Furthermore, when displaying the second character type, a more appropriate display state can be realized by performing switching display or alternate display with the first character type.

[Brief description of drawings]

FIG. 1 is a block diagram of a recording / reproducing apparatus according to an embodiment of the present invention.

FIG. 2 is a plan view of the recording / reproducing apparatus of the embodiment.

FIG. 3 is an explanatory diagram of a data structure of TOC sector 0 read by the recording / reproducing apparatus of the embodiment.

FIG. 4 is an explanatory diagram of a data structure of a TOC sector 1 read by the recording / reproducing apparatus of the embodiment.

FIG. 5 is a U-TO read by the recording / reproducing apparatus of the embodiment.
It is explanatory drawing of the data structure of C sector 0.

FIG. 6 is a U-TO read by the recording / reproducing apparatus of the embodiment.
It is explanatory drawing of the data structure of C sector 1.

FIG. 7 is a U-TO read by the recording / reproducing apparatus of the embodiment.
It is explanatory drawing of the link structure of the data of C sector 0.

FIG. 8 is a flowchart showing a display operation of the first embodiment.

FIG. 9 is a flowchart showing a display operation of the second embodiment.

FIG. 10 is a flowchart showing a display operation of the third embodiment.

FIG. 11 is a flowchart showing a display operation of the fourth embodiment.

FIG. 12 is an explanatory diagram of ASCII characters recorded as character information.

[Explanation of symbols]

1 Magneto-optical disk 3 Optical head 6 magnetic head 8,14 Encoding / decoding section 11 System controller 12 Memory controller 13 Buffer RAM 19 Operation input section 20 Display 21 Kana conversion unit 22 Switching unit 23 TOC memory

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) G11B 27/34 G09G 5/22 G11B 27/10

Claims (6)

(57) [Claims] 1. A data area in which one or a plurality of units of information are recorded, a recording position of one or a plurality of units of information recorded in the data area, and one recorded in the data area.
Or a sound reproducing device for reproducing character information relating to a plurality of units of information on a recording medium having a management area in which the character information is recorded in the first character type, and is represented by the first character type reproduced from the management area. conversion means for converting a character string to a character string expressed in the second character type, the first character string expressed in the character type can be converted to a string that will be represented by the second character type Discriminating means for discriminating whether the format is proper, displaying means for displaying character information, and the first character type reproduced from the management area.
The above-mentioned discriminator that the drawn character string can be expressed by the above-mentioned second character type.
If the judgment is made in stages, the display means is converted to the conversion means.
The character string expressed in the second character type above converted by
Controlled to be displayed and played from the management area above
The character string represented by the first character type is the second character
If it is judged that the expression cannot be expressed by the seed,
Represented by the first character type reproduced from the management area
And a display control unit that controls the displayed character string to be displayed on the display unit. 2. The sound according to claim 1, further comprising operation means capable of selecting whether to display the character information in the first character type or in the second character type on the display means. Playback device. 3. The sound reproducing device according to claim 1, wherein the first character type is an ASCII character code. 4. The sound reproducing device according to claim 1, wherein the second character type is katakana. 5. The sound reproducing device according to claim 1, wherein the second character type is hiragana. 6. The sound reproducing apparatus according to claim 1, wherein the second character type is Hangul characters.