JPH06111550A - Reproducing device - Google Patents

Abstract

PURPOSE:To enhance reproducing convenience by retrieving and displaying sound information after only making a user input all or a part of the titles of the recorded sound information. CONSTITUTION:When an inputted music name is searched by the user, a music name searching mode is started by a system controller 11 consisting of a CPU, and the titile information is read out of a magneto-optical disk 1 and is stored in a TOC data memory 21. Then, when a character string is inputted by the user in operating ten keys and enter keys, this character string is compared with a track name stored in the memory 21 to retrieve whether a music name that is coincident with the character string is in existence or not, and when a coincident music name is in existence, this is fetched into a buffer RAM 13, and is displayed in turn on a display part 20 by display feed operation. Now, when a desired music name is not remembered, since its music may not be remembered even if the name is remembered, retrieval processing is performed for several tens seconds or the beginning words are displayed.

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 data such as music recorded on a disc-shaped recording medium.

[0002]

2. Description of the Related Art As a reproducing apparatus capable of reproducing music and the like, a CD which records an audio signal as a digital signal
A reproducing device using a (compact disc), a magneto-optical disc, or a magnetic tape as a recording medium is known. In these playback devices, in addition to sequentially playing back recorded music and the like, for example, by inputting the track number of the music that the user wants to listen to, only the desired music can be played back. .

[0003]

However, it is not possible to confirm what song the desired song is recorded on, for example, the disc loaded in the playback device, without looking at the disc jacket or the manual, and the user may select the song title. However, there was a problem that the track number could not be input immediately and the playback operation was time-consuming in many cases.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and allows a user to search for and play a corresponding song by inputting all or part of the song title. The purpose is to

Therefore, as a reproducing apparatus, a reproducing apparatus capable of reproducing information from a disk-shaped recording medium in which title information of each audio information unit is recorded in a predetermined area together with one or more units of audio information, Is an input unit capable of inputting an arbitrary character string as one or a plurality of characters, a storage unit capable of storing title information read from a disc-shaped recording medium, and a character string input from the input unit. And output means for comparing the title information held in the storage means and outputting information relating to the title information that matches or contains the character string. Further, when there is a plurality of title information that matches the input character string or contains the character string, each title information can be sequentially displayed and output to the display means.

[0006]

In the reproducing device corresponding to the disc-shaped recording medium in which the title information indicating the song title of each audio information such as music is recorded in the predetermined area, the user desires based on the character input made by the user. You can search for replayed music.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the reproducing apparatus of the present invention will be described below. First, the structure of the recording / reproducing apparatus according to the embodiment will be described with reference to FIGS. 1 and 2, and then with reference to FIGS. The management data written as TOC information on the magneto-optical disk corresponding to this recording / reproducing apparatus will be described, and then the operation of this embodiment will be described with reference to FIG.

This embodiment is a recording / reproducing apparatus using an MO (magneto-optical) disk as a recording medium, FIG. 1 is a block diagram of a main part of the recording / reproducing apparatus, and FIG. 2 is a plan view showing the appearance. In FIG. 1, 1 is, for example, a plurality of songs (voice data)
Indicates a magneto-optical disk on which is recorded and is driven to rotate 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.

For this reason, the optical head 3 is equipped with a laser diode as a laser output means, an optical system including a deflecting beam splitter, an objective lens and the like, 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 which applies a magnetic field modulated by the supplied data to the magneto-optical disk, and is arranged at a position facing the optical head 3 with the magneto-optical disk 1 interposed therebetween.

By the reproducing operation, the information detected from the magneto-optical disk 1 by the optical head 3 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., and the biaxial mechanism 4 and 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.

The data written in the buffer RAM 13 is read out 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 CIRC encoding, EFM modulation, and other encoding processing, and then supplies the magnetic head driving circuit 15.

The magnetic head drive circuit 15 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.

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 58, a disc name input mode key 58, a date input mode key 59, a ten-key pad 61, a display feed 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.

Reference numeral 21 in FIG. 1 is a RAM (hereinafter referred to as TOC memory) for holding TOC information in the magneto-optical disk 1. The magneto-optical discs 1 compatible with the reproducing apparatus of this embodiment include a ROM type and a data rewritable type in which a user can record music data and the like. Accordingly, data for managing areas where data such as music has already been recorded and data for managing unrecorded areas are recorded as TOC information.

At the time when the magneto-optical disk 1 is loaded, 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 21 and is 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. The data area of FIG. 4 is mainly TOC information about a song or the like (ROM information) recorded in advance on the disc, and the data area of FIG. 5 is TOC information about a title of a song or the like mainly recorded on the disc. In the data area 6 of the table, TOC information is mainly recorded about a song recorded by the user and an unrecorded area that can be newly recorded.

Each area in FIGS. 4 to 6 is, for example, 4
A header having a sync pattern composed of 1-byte data of all 0's or all 1's is provided at the head position to indicate a TOC region, which is constituted by a data area of bytes × 587.

In the data area of FIG. 4, the disk type, the recording level, the music number of the first music piece recorded (First TNO), and the music number of the last music piece (Last TNO) are recorded at a predetermined address position following the header. ), Lead-out start address, start address of U-TOC (data area of FIG. 6), start address of recordable area, etc. are recorded, and each recorded song etc. is associated with a management table described later. Various correspondence table instruction data (P
-A region for recording TNO1 to P-TNO255) is prepared.

On the other hand, in the data area (U-TOC) of FIG. 6, data such as the sector usage status and the disk ID is recorded at a predetermined address position following the header, and the recorded music pieces are described later. Various correspondence table instruction data (P-DFA to P-TNO255) corresponding to the management table
An area for recording is prepared.

The areas in FIGS. 4 and 6 correspond to the correspondence table instruction data (P-TNO1 to P-TNO255) or the correspondence table instruction data (P-DFA to P-TNO255) as a management table ( There are 255 parts tables from 01) to (FF), and each part table contains information about a certain segment (in this case, a segment means a portion where data is physically consecutively recorded). Record the start address that is the starting point, the end address that is the ending point, the mode information of the segment (track), and the start address and end address of the linked segment if the segment is linked to another segment. Link information indicating the part table that is being used can be recorded. For example, the data of one song is physically discontinuous, that is, even if it is recorded over multiple segments, it does not hinder the playback operation. , It may be recorded in multiple segments. However, since pre-recorded songs and the like are not usually segmented, the results shown in FIG.
The link information is all "(00)" as shown in.

The mode information of the track in each parts table is information as to whether the segment is set to, for example, overwrite inhibition or data copy inhibition,
Whether or not it is audio information, monaural / stereo type, etc. are recorded. Further, the link information specifies the parts tables to be linked by the numbers (01) to (FF) given to the respective parts tables, for example. That is, in the management table, one parts table represents one segment. For example, for a music piece formed by connecting three segments, three parts tables linked by link information indicate the segment position. Management is done. Therefore, (01) to (FF) which are the numbers of the parts table can be directly used as the segment numbers.

(01) in the management table of FIG. 4 or FIG.
In each parts table up to (FF), the contents of the segment are indicated by the corresponding table instruction data (P-DFA, P-EMPTY, P-FRA, P-TNO1 to P-TNO255).

The P-DFA recorded in the area of FIG. 6 is shown for a defective area on the magneto-optical disk 1, and is a single part showing a track portion (= segment) which is a defective area due to a scratch or the like. A table or the first parts table in multiple parts tables is specified. In other words, if there is a defective segment, the correspondence table instruction data P-
One of (01) to (FF) is recorded in the DFA,
In the corresponding parts table, the defective segment is indicated by the start and end addresses. 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 P-EMPTY recorded in the area of FIG. 6 indicates the top part table of one or a plurality of unused part tables in the management table. If there is an unused part table, it corresponds to it. Table instruction data
Any of (01) to (FF) is recorded as P-EMPTY. If there are multiple unused parts tables,
The parts table is sequentially specified by the link information from the parts table specified by the correspondence table instruction data P-EMPTY, and all unused parts tables are linked on the management table.

For example, in the case of a magneto-optical disk which is not recorded at all and has no defect, since the parts table is not used at all, the corresponding table instruction data P-EM is used.
The part table (01) is specified by the PTY, and the part table (0) is used as link information for the part table (01).
2) is specified, the part table (03) is specified as the link information of the parts table (02), and so on, and the parts table (FF) is linked. In this case, the parts table (F
The link information of F) will be “(00)” indicating no connection thereafter.

The P-FRA recorded in the area of FIG. 6 is shown for the unrecorded area (including the erased area) of the data on the magneto-optical disk 1, and the track portion (=
The first part table in one or a plurality of part tables indicated by (segment) is designated. In other words, if there is an unrecorded area, the correspondence table instruction data P-FRA
In (1) to (FF), any one of (01) to (FF) is recorded, and a segment which is an unrecorded area is indicated by the start and end addresses in the corresponding parts table. 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 becomes 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.

P-TNO1 recorded in the areas of FIGS. 4 and 6
P-TNO255 shows each music recorded on the magneto-optical disk 1. For example, in the correspondence table instruction data P-TNO1, temporally one or a plurality of segments in which the data of the first music is recorded. The parts table that indicates the first segment is specified. It should be noted that the area of FIG. 4 shows the data such as the music recorded in advance, and the area of FIG. 6 shows the data of the music recorded by the user.

For example, the first music piece 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 corresponding table instruction data 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 to indicate the recording position of the music piece. In other words, from the parts table specified in the correspondence table instruction data P-TNO2, further parts tables are sequentially specified by the link information according to the temporal order, and the parts table in which the link information is "(00)" is linked. (The above-mentioned, the same form as FIG. 7). In this way, for example, all the segments in which the data constituting the second music piece is recorded are sequentially designated and stored, so that the U-TOC data is used to reproduce the second music piece or to the area of the second music piece. When overwriting is performed, 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.

Further, in the area of FIG. 5, character table instruction data P-TNA1 to P-TNA255 corresponding to each recorded music piece,
A character table designated by the character table instruction data P-TNA1 to P-TNA255 is prepared. In the character table, a disc name indicating an album title or the like and a track name indicating a music title or the like are recorded. For example, the title of the first piece of music is recorded in the character table designated by the character table instruction data P-TNA1.

The recording / reproducing apparatus of this embodiment for the magneto-optical disk 1 on which such TOC information is recorded is a TOC.
The TOC information read into the memory 21 is used to manage the recording area on the disc to control the recording / reproducing operation. And, in particular, it is possible to display, on the display section 20, information read out as TOC information by numbers or characters.

The magneto-optical disc 1 is provided with an area shown in FIG. 5 for storing recorded music and the like, and character information such as the music title of the music and the disc name (album title). With respect to the newly recorded music, the music title and the like can be written corresponding to the music. For example, when the user operates the Enkey 61 or the like of the operation unit 19 at the time of recording to input alphabetic character information, the character information is T of the magneto-optical disk 1.
It is written in the OC area. And during playback,
For example, when the magneto-optical disk 1 is loaded into this recording / reproducing apparatus, the information in the TOC area is read out, and the character information written in the user TOC area is also read out together with the management data and the character information stored in the ROM. TOC memory 2
1, the system controller 11 can display numerical values, characters, etc. on the display unit 20 based on the information.

As an operation realized in the recording / reproducing apparatus having such a structure, an operation of reproducing with a music title inputted by the user (provisionally called a music title searching operation) will be described with reference to FIG. When the song title search mode is started, the system controller 11 first causes the magneto-optical disc 1 to operate.
From the TOC information shown in FIG. 4 to FIG.
Write to the OC memory 21 (F101). If already read, it is not necessary to perform here.

Next, the user waits for the user to input a character string by operating the ten keys 61 and the enter key 63.
(F102). When the character string is input, this character string is compared with the song name information (track name) corresponding to each song in the TOC memory 21, and there is a song name that matches this character string or a song name that includes this character string. Search for (F103).

For example, "THIS BOY""THISTIME""EMOT
If a song with the song name "IONS" ... is recorded and the user inputs "THIS BOY", there is a matching song name, so the character data that is the song name (track name) is displayed. Capture in internal buffer register. Or if the user inputs "THIS", "THIS"
"BOY" and "THIS TIME" are applicable, and these are loaded into the buffer register (F105). If there is no corresponding song title, a message to that effect is displayed (F114) and the process ends.

When the system controller 11 takes in one or a plurality of corresponding song names, it sets the variable b to the number of the corresponding songs (for example, b = 2 when "THIS BOY" and "THIS TIME" are applicable) or a variable. Set a = 1 (F106, F10
7). Then, the a-th applicable music title is displayed on the display unit 20. For example, when “THIS BOY” and “THIS TIME” are applicable, the first applicable song title “THIS BOY” is displayed.

When the user performs a reproduction operation with the reproduction key 52, the music is recorded from the data shown in FIG. 4 or 6 based on the track number of the music whose title is "THIS BOY". The address of the area is determined, a search is performed to start the playback operation, and the song title search operation ends (F109 → F110).

When the user operates the display forward key 62 while the corresponding song title is displayed (F111), the variable a is incremented (F113), and the process returns to step F108 and the next relevant song title is displayed. indicate. For example, "THIS TIME" is displayed. When this "THIS TIME" is displayed (b =
(2, a = 2), when the display forward key 62 is operated again, in order to return the display to the first applicable song, set a = 1 (F1
11 → F112 → F107), and the process returns to step F108.

In other words, by the above routine, the music title corresponding to the character string input by the user is displayed (in the case where there are a plurality of music titles, they are sequentially displayed), and the music title displayed when the reproducing operation is performed is searched. Will be played back. As a result, if the user knows the song name of the song that he / she wants to listen to or a part of the song name, he / she can easily play the song without checking the song number of the song.

When there are a plurality of corresponding music titles, they are sequentially displayed by the display advancing operation.
If the display area of 0 has room, a plurality of song titles may be displayed at once. In this case, the user is allowed to select a reproduction song from the displayed song names.

The feed operation for displaying the music title may be performed in both directions using, for example, a search key. When there are many corresponding music titles, the display music can be sent not only to the next music title but also to the previous music title, so that the operation of designating the reproduced music becomes simpler.

By the way, it is possible to perform more various reproducing operations by utilizing such a music title searching process.
For example, it is conceivable that the first few seconds to several tens of seconds of the corresponding music piece are reproduced one after another while displaying the music title. This is a suitable operation when the song name of the desired song cannot be clearly remembered among the corresponding songs, or when the song name can be remembered but the actual song cannot be remembered.

Further, shuffle reproduction in which the corresponding music piece is reproduced in a random order, or reproduction in which reproduction is performed sequentially based on the track number order can be performed. Further, it is also possible to perform the program order reproduction by performing the music order memory operation of the program reproduction at the stage where the desired music title is displayed.

By the way, when various character data is further stored as TOC information corresponding to a music piece, if a display switching operation is performed at a stage when a certain music title is displayed, another character related to the music piece is displayed. Information can also be displayed. For example, it is possible to display the lyrics of the beginning of the song, which is useful for determining the desired song.

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.

[0053]

As described above, according to the present invention, when the user inputs all or a part of the title of the recorded audio information, the corresponding audio information is searched and displayed, and the selected audio information is selected from the corresponding songs. Since the desired song can be specified and the reproduction operation can be performed, it is not necessary to confirm the order in which the desired song is recorded, and the convenience of reproduction is improved.

[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 a flowchart showing a music title search operation of the embodiment.

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

FIG. 5 is an explanatory diagram of a TOC data structure read by the recording / reproducing apparatus of the embodiment.

FIG. 6 is an explanatory diagram of a TOC data structure read by the recording / reproducing apparatus of the embodiment.

FIG. 7 is an explanatory diagram of a link structure of TOC data read by the recording / reproducing apparatus of the embodiment.

[Explanation of symbols]

 1 Magneto-optical disk 3 Optical head 6 Magnetic head 8,14 Encoding / decoding unit 10 Address decoder 11 System controller 12 Memory controller 13 Buffer RAM 21 TOC memory

Claims (2)

[Claims] 1. A reproducing apparatus capable of reproducing information from a disc-shaped recording medium in which title information of each audio information unit is recorded in a predetermined area together with one or more units of audio information, and one or more characters are provided. As an input means, an input means capable of inputting an arbitrary character string, a storage means capable of storing title information read from a disc-shaped recording medium, a character string input from the input means and the storage means An output unit that compares the held title information and outputs information related to the title information that matches the character string or that includes the character string. 2. When there is a plurality of title information that matches the input character string or contains the character string, each title information can be sequentially displayed and output on the display means. The reproducing apparatus according to claim 1.