JP2001014776A - Disk reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To quickly display a still picture related to a disk without delaying the audio reproduction in a disk reproducing device provided with a changer mechanism. SOLUTION: By a system control part 13 of this disk reproducing device, disk auxiliary data in a TOC memory 15 are retrieved and displayed on a still picture display part 19 when they are in existence, and in the case of no existence, the reading is started from the disk 1. When the disk is unloaded, the disk auxiliary data on the TOC memory 15 are erased. The disk auxiliary data are preferentially preserved in the memory when the disk is inserted. When the disk is in the process of reproduction at the time of disk insertion, the disk auxiliary data are preserved in the memory after waiting until the sleep period. The already inserted disk is retrieved at the time of applying the power supply, then the disk auxiliary data are fetched to the memory. When the plural disk auxiliary data are in existence, one among the leading part is preferentially read in.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc reproducing apparatus such as a mini disc.

[0002]

2. Description of the Related Art A conventional example of a disk reproducing apparatus will be described below with reference to the drawings.

[0003] This conventional example will be described using a mini disk system as an example.

The configuration of the mini disk system is described in Nikkei Electronics No. 535,199
1.9.2, pages 127-141.

FIG. 1 is a block diagram showing a configuration of a disk reproducing apparatus according to Embodiment 1 of the present invention. A conventional example will be described with reference to FIG.

In FIG. 1, reference numeral 1 denotes a magneto-optical disk or an optical disk (hereinafter, simply referred to as a disk). Reference numeral 2 denotes a spindle motor for rotating the disk 1, which is driven by a servo unit 6 via a motor driver 5. The signal recorded on the disk 1 is read by the optical pickup 3 and supplied to the reproduction amplifier 7. The optical pickup 3 is driven by a servo unit 6 via a motor driver 5.

The position of the optical pickup 3 on the disk 1 is controlled by a traverse motor 4.
The traverse motor 4 is driven by a servo unit 6 via a motor driver 5.

The reproduction amplifier 7 converts the reproduction signal reproduced by the optical pickup 3 from current to voltage, equalizes the waveform, and supplies the signal to a signal demodulation unit 8. The reproduction amplifier 7 converts the ADIP (address implement groove) signal reproduced by the optical pickup 3 from current to voltage and supplies the signal to the signal demodulation unit 8.

The reproduction signal from the optical pickup 3 and A
A method of separating the DIP signal is described in Nikkei Electronics Magazine No. 535, 1991.9.2, pages 127 to 141. The reproduction amplifier 7 performs a current-to-voltage conversion on the signal reproduced by the optical pickup 3, generates a servo signal, and supplies the servo signal to the servo unit 6.

When the system controller 13 instructs demodulation, the signal demodulator 8 extracts a clock from the reproduced signal supplied from the reproducing amplifier 7, detects data using the extracted clock, and performs EFM (8-14 modulation). ) Demodulate the modulated data. Clock extraction is performed by PLL (Phase Locked)
Loop) circuit. Then, the signal demodulation unit 8
Detects the frame synchronization signal, performs error correction using the error correction code included in the demodulated data, and sends the corrected data to the shock proof memory 9.

The signal demodulation unit 8 converts the frame clock (about 7.35 kHz) detected at the time of demodulation into the servo unit 6.
To supply. The frame clock is a clock having the same frequency as the reproduced frame, and is generated by the signal demodulation unit 8 based on the frame synchronization signal. The signal demodulation unit 8
Demodulates an ADIP signal recorded on the disk 1, generates a bit clock, supplies the bit clock to the servo unit 6, detects an address signal recorded on the ADIP, and controls the ADIP address data (ADIPAD) by system control. To the unit 13. Shock proof memory 9
Is a memory for storing audio data after correction output from the signal demodulation unit 8.

[0012] TOC (Table Of Contens) memory 15
Is a memory for storing a set of a track number of a track (song) and a start address of the track, which is read out by the signal demodulation unit 8 and recorded on the disk.

The still picture TOC memory 16 stores a still picture T on the disk read by an instruction from the system controller 13.
Stores OC data. In the still image TOC memory 16,
The recording positions of the twenty still image data on the disk are stored. The still image TOC is a set of data indicating the recording position of the still image data on the disk and the timing of displaying the associated track. The still image TOC includes still image data associated with the track (hereinafter referred to as track-related still image data) and still image data associated with the entire disk not associated with the track (hereinafter referred to as disk-related still image data). ) Can also be stored.

The disk changer 20 has four holders for storing four disks 1, and the system control unit 1
3 in response to an instruction from a particular disc 1
Can be loaded onto the spindle motor 2 and discharged.

The disk detector 18 detects the presence or absence of the disk 1 in each holder of the disk changer 20, and sends the detection result to the system controller 13. The disk detection unit 18 can be realized by, for example, a combination of an LED and a photodiode.

FIG. 11 shows a still picture TOC memory 1 according to a conventional example.
6 is a diagram showing the contents of FIG. In FIG. 11, STAD (i) is 4-byte data indicating the start address of still image i on disk 1, ENDAD (i) is 4-byte data indicating the end address of still image i on disk 1, and TNO ( i) is 1-byte data indicating the track number of the track associated with the still image i, and OFS (i) is 3-byte data indicating the display timing of the still image i (offset address from the beginning of the track). . When TNO (i) is from 1 to 255, it indicates a track number, and when TNO is 0, it indicates that the still image indicated by that item is a disk-related still image. DSK (i)
Is 1-byte data indicating the disk number. That is, the N-th disc changer 20 (N = 1, 2, 3,
4) Still image DS of disk 1 stored in the holder
The value of K (i) is N.

Returning to FIG. 1, the still image data memory 17
The still image data on the disk read by the instruction of the system control unit 10 is stored. Still image data memory 17
Stores 20 pieces of still image data including track-related still image data associated with a track by the still image TOC and disk-related still image data associated with the entire disk.

The still picture TOC data on the disc 1 is also TN
O (i) and OFS (i) are stored in a similar format. As the start address and the end address, addresses on the disk are recorded.

The still image display section 19 generates a video signal for display on a television receiver or the like based on the data sent from the still image data memory 17.

The servo section 6 controls the number of revolutions of the disk 1 with the frame clock supplied from the signal demodulation section 8 during reproduction of the disk 1. The servo unit 6 controls the number of revolutions of the disk 1 during reproduction or recording of the disk 1 by the bit clock of the ADIP signal generated by the signal demodulation unit.

Based on the amount of data stored in the shockproof memory 9, the memory control unit 10 determines whether or not the amount of data stored in the shockproof memory 9 has reached the upper limit of the memory capacity. The MF is set, and the memory full flag MF is released when the data amount becomes equal to or less than (the upper limit of the memory capacity−4 sectors).

When the amount of data stored in the shock proof memory 9 reaches 0, the memory control unit 10 sets a memory empty flag ME, and the data amount becomes
When the number of sectors becomes four or more, the memory empty flag ME is released.

The system control unit 13 includes the memory control unit 10
From the memory full flag MF supplied from the
Based on the empty flag ME, the servo unit 6, the signal demodulation unit 8, and the audio expansion unit 11 are controlled. This system control unit 13 can be realized by a microprocessor or the like.

When the system control unit 13 instructs the reproduction mode, the sound expansion unit 11
The data is read out at a constant rate from, and the compressed audio data is expanded. As a result, 16-bit data for two channels is output at a rate of 44.1 kHz for each channel. This data is output via a DAC (digital-analog converter) 12 as an audio output signal for two channels.

Further, the memory control unit 10 controls the TOC memory 15 and the still image T based on the instruction of the system control unit 13.
It controls reading and writing of data in the OC memory 16.

The operation input unit 14 is used to start reproduction of a user,
In a portion that receives an instruction such as skip to a specific track, the instruction is sent to the system control unit 13.

Next, the operation of the conventional disk reproducing apparatus will be described with reference to the drawings.

FIG. 12 is a flowchart showing the operation of the conventional system control unit 13.

The process S1 is performed when the system control unit 13 receives an instruction to exchange a disk from the operation input unit 14.
2 shows a process of branching to step S2, and otherwise executing step S1 again.

The process S2 is a process of loading the disc 1 stored in a specific holder, which has been instructed from the operation input unit 14, into the disc changer 20.

The process S3 controls the servo unit 6, the signal demodulation unit 8 and the memory control unit 10 to read the TOC
And the still image TOC are read, and
And the process of storing in the still image TOC memory 16.

The process S4 controls the servo section 6, the signal demodulation section 8 and the memory control section 10 based on the contents of the still picture TOC memory 16 to transfer the still picture data from the disk 1 to the still picture data memory 17 Shows the reading process.

At this time, the offset address OFS of the still picture TOC stored in the still picture TOC memory 16 (FIG. 1)
Referring to 1), the still image data is sequentially read from the smallest offset address and stored in the still image data memory 17.

By doing so, the timing to be displayed is stored in the still picture memory 17 in order from the still picture data near the beginning of the track.

The process S5 is based on the contents of the still image TOC memory 16, and the process branches to the process S6 when all the fetching of the disk-related still image data is completed, and otherwise to the process S7. Is shown.

In step S6, the first disk-related still image data (data of TNO (I) = 0... FIG. 11) is read from the still image data memory 17 based on the contents of the still image TOC memory 16, and the still image is displayed. The process of transferring the still image to the unit 19 and updating the still image will be described.

In step S7, the process branches to step S8 if all the 20 still image data have been fetched based on the contents of the still image TOC memory 16, and to step S4 otherwise. Indicates processing.

In step S8, it is checked whether or not a reproduction instruction has been issued from the operation input unit 14. If a reproduction instruction has been issued, the process branches to step S9. The process for executing the process S8 is shown.

Processing S9 is performed when the memory full flag MF output by the memory control unit 10 becomes 1, that is, when the shock proof memory 9 becomes full.
The process is branched to step S11, otherwise to step S11.

The process S10 controls the voice decompression unit 11,
The voice data is read from the shock proof memory 9,
The process of performing expansion processing and starting transmission of audio data to the DAC 12 is shown.

The process S12 is a process for controlling the servo unit 6, the signal demodulation unit 8 and the memory control unit 10 to stop reading audio data from the disk 1 to the shock proof memory 9.

In step S11, when the reading of the audio data has not been started, the servo unit 6, the signal demodulating unit 8 and the memory control unit 10 are controlled to start reading the audio data from the disk 1. When the voice data is stored in the shock proof memory 9 and the reading of the voice data is started,
This shows a process of continuing the reading process of the audio data.

In step S13, the difference between the start address of the currently reproduced track stored in the TOC memory 15 and the address of the music data currently being reproduced and the difference between the still image TOC data loaded into the still image TOC memory 16 and The offset address OFS (FIG. 11) is compared, and at the position currently being reproduced,
It is determined whether or not there is a still image to be displayed. If there is a still image to be displayed, the process branches to step S14; otherwise, the process branches to step S15.

In step S14, the still image data is read from the still image data memory 17 and transferred to the still image display unit 19,
The process of updating a still image is shown.

In step S15, it is checked whether or not an instruction to stop reproduction has been issued from the operation input unit 14, and if there has been an instruction to stop reproduction, the flow branches to step S16. If not, the flow branches to step S9. Indicates processing.

The process S16 controls the audio decompression unit 11 to
A process of stopping reading audio data from the shock proof memory 9 and stopping transmission of audio data to the DAC 12 will be described.

Next, the control of the shock proof memory 9 by the system control unit 13 will be described in more detail (corresponding to S9 to S15 in the flowchart of FIG. 12).

FIG. 13 is a timing chart showing the operation of loading audio data into the shock proof memory 9 in the conventional disk reproducing apparatus.

In FIG. 13, MS indicates the state of storage of the sound data in the shock proof memory 9, the full on the vertical axis indicates the state where the shock proof memory 9 is full, and (full-M) indicates the state of the shock proof memory 9. Free space is M
(M = 4) Sector state, (Empty + N) indicates a state in which data for N (N = 4) sectors is stored in the shockproof memory 9. Empty indicates that the shock proof memory 9 is empty.

MF is a memory full flag sent by the memory control unit 10. The memory control unit 10 sets the memory full flag MF when the amount of data stored in the shock proof memory 9 becomes full, and when the free space of the shock proof memory 9 becomes M (M = 4) sectors. , Clear the memory full flag MF. The horizontal axis indicates the passage of time.

When reproduction is instructed by the operation input unit 14,
When the shock proof memory 9 starts playing at a constant rate X from the empty state at time A, the shock proof memory 9 becomes full at time B. When the memory full flag MF is turned on at time B, the system control unit 13 prohibits writing of corrected data from the signal demodulation unit 8 to the shockproof memory 9.

That is, a flag DEMAEN indicating signal demodulation
And a data transfer instruction SPMWEN to the shockproof memory 9
Turn off.

At time B, the system control unit 13 prohibits writing of the corrected data from the signal demodulation unit 8 to the shock proof memory 9 and then instructs the servo unit 6 to perform a track jump to the next sector. Normally, an instruction to access the sector next to the sector in the shock proof memory 9 is issued by time B. When access is completed, servo unit 6
Tracking signal supplied to the system control unit 13 from the
TRON turns ON.

Thereafter, data is not written to the shock proof memory 9 until time C. The voice expansion unit 11 reads data from the shock proof memory 9 at a rate of X / 5.

Next, at time C, the shock proof memory 9
When the data amount of (1) becomes (full-M), the system control unit 1
No. 3 turns on the signal demodulation flag DEMAEN.

Next, the system control unit 13 controls the signal demodulation unit 8
ADIP address (ADIPAD) sent from
After confirming that the address indicates the sector immediately before the sector to be taken in next, a data transfer instruction SPMWEN is issued to the signal demodulation unit 8 at time D to instruct the signal demodulation unit 8 to transfer data to the shockproof memory 9.

Next, when the memory full flag MF is turned on at time E, the writing of corrected data from the signal demodulation unit 8 to the shockproof memory 9 is prohibited. After this,
The system control unit 13 repeats the same processing as the time B to the time E.

During the above-mentioned processing, the system control section 13 compares the offset address in the track indicated in the still picture TOC memory 16 with the offset address of the audio data being reproduced. The contents of the image data memory 17 are transferred to the still image display unit 19, and the still image is updated.

By performing the above-described control, when an instruction to reproduce a new track is issued from the operation input unit 14, first, still image data corresponding to a desired track is read and displayed, and then audio is output. Can be played.
In addition, a normal (full-
M) The corrected data above is stored, and due to vibration, etc.
Even if demodulation cannot be performed, voice expansion processing can be continued using the corrected data in the shock proof memory 9, so that a system with high anti-vibration performance can be realized.

In the above conventional example, still image data has been described as an example of data related to a music track or a disk. However, if the data can be associated with a track such as a moving image, text, or the like, or the entire disk,
Since a similar effect can be obtained, data associated with a track will be referred to as track auxiliary data, and data associated with the entire disk will be referred to as disk auxiliary data.

[0061]

However, in the above-mentioned conventional example, in the changer system, each time the selected disk is switched, it is necessary to read a still image (disk auxiliary data) associated with the entire disk from the disk. However, there is a problem in that it takes a long time to display a still image, and when the user wants to start reproduction immediately after inserting the disc, the user has to wait for a long time, giving the user a sense of discomfort.

The present invention solves the above-mentioned conventional problems. When the first disk is selected, disk auxiliary data from the disk is fetched into the memory, and the disk auxiliary data on the memory is read out after the second time. The contents of the disk auxiliary data can be displayed with almost no delay from the disk selection, and the disk auxiliary data extracted from the disk changer can be quickly erased from the memory so that the memory resources can be effectively used. It is an object of the present invention to provide a disk reproducing apparatus having excellent operability.

[0063]

In order to achieve this object, a disk reproducing apparatus according to the present invention comprises a spindle motor for rotating a disk, a pickup for reading information recorded on the disk and reproducing a signal, and a plurality of pickups. A disc changer that has a plurality of holders for storing the discs, and loads a specific disc from the plurality of holders onto the spindle motor; and a disc detection unit that detects the presence or absence of a disc in the plurality of holders of the disc changer. A spindle unit, a servo unit that controls the pickup, a signal demodulation unit that demodulates a signal reproduced from the pickup, an audio output unit that outputs audio data demodulated in the signal demodulation unit, Auxiliary data table of contents (TOC) demodulated in signal demodulation unit An auxiliary data TOC memory for storing, an auxiliary data memory for storing auxiliary data demodulated in the signal demodulation unit, an auxiliary data display unit for displaying the contents of the auxiliary data, the auxiliary data memory, and the auxiliary data TOC memory A memory control unit for controlling the operation of the device, an operation input unit for a user to set various operation modes of the apparatus, and the disk changer, the servo unit, and the signal demodulation based on an input from the operation input unit. Unit, a memory control unit, and a system control unit that controls the audio output unit. The system control unit, based on an input from the operation input unit, an Nth (N) = 1, 2, 3,...), The loading of the N-th disk is instructed. Correspondingly, and searches the disk auxiliary data in the auxiliary data TOC memory associated with the entire disk, when the disk auxiliary data is not extracted, and the disc changer,
The servo unit, the signal demodulation unit, and the memory control unit are controlled to read the auxiliary data TOC from the Nth disk.
Is read and stored in the area corresponding to the Nth disk of the auxiliary data TOC memory, and then the auxiliary data TOC is read.
The disk auxiliary data corresponding to the Nth disk in the memory is searched, and when the disk auxiliary data is extracted, the disk auxiliary data on the disk is read,
The disk auxiliary data is stored in an area corresponding to the Nth disk auxiliary data in the auxiliary data memory, the disk auxiliary data is sent to the auxiliary data display section, and the contents of the disk auxiliary data are displayed. Is extracted from the auxiliary data memory,
The disk auxiliary data corresponding to the N-th disk is sent to the auxiliary data display unit, the disk auxiliary data is displayed, and when an instruction to remove the disk is issued from the operation input unit, the disk corresponding to the disk to be removed is displayed. The auxiliary data is configured to be erased from the auxiliary data TOC memory, or to be in an erase enabled state.

According to the present invention, when the first disk is selected, disk auxiliary data from the disk is fetched into the memory at the time of the first disk selection, and the disk auxiliary data on the memory is read out from the disk for the second and subsequent times. In addition, the contents of the disk auxiliary data associated with the disk can be displayed, and the disk auxiliary data relating to the disk removed from the disk changer can be quickly erased from the memory, so that the memory resources can be effectively used. Thus, it is possible to provide a disk reproducing apparatus having excellent operability.

[0065]

Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1) Embodiment 1 of the present invention
At the time of the first disc selection, the disc auxiliary data associated with the entire disc from the disc, for example, still picture data of the photograph of the player of the music recorded on the disc, is loaded into the memory, and the second and subsequent times The disk auxiliary data associated with the disk can be displayed with little delay from the disk selection by reading the disk auxiliary data in the memory, and the disk auxiliary data relating to the disk removed from the disk changer. Is quickly erased from the memory so that the memory resources are effectively used.

In the first embodiment, since still image data is described as an example of auxiliary data, still image data corresponding to disk auxiliary data is referred to as disk-related still image data. Still image data associated with a track is referred to as track-related still image data.

The configuration of the disc reproducing apparatus according to the first embodiment is the same as that shown in FIG. 1 described in the section of the conventional example, except that the processing contents of the system control unit 13 are different. The operation will be described with reference to FIG.

FIGS. 2 and 3 are flowcharts showing the operation of the system control unit 13 of the disk reproducing apparatus according to Embodiment 1 of the present invention.

The process S17 shows a process of branching to a process S18 when there is an instruction to remove a disk from the operation input unit 14, and a process of branching to a process S20 otherwise.

In step S18, the Nth (N = N) instruction from the operation input unit 14 is issued to the disc changer 20.
The process for instructing the ejection of the disc stored in the holder (1, 2, 3, 4) will be described.

The process S19 is performed by the memory control unit 10
Still image TOC corresponding to the Nth disk (DSK (i) = N
.. Shows processing for instructing erasure in FIG. 11).

The process S20 shows a process of branching to a process S21 when there is an instruction to exchange a disk from the operation input unit 14, and a process of branching to a process S17 otherwise.

In step S21, the M-th (M = M) commanded by the operation input unit 14 is given to the disc changer 20.
The processing for instructing loading of the disk 1 stored in the holder (1, 2, 3, 4) will be described.

The process S22 checks whether or not a disk-related still image is stored in the still image TOC memory 16, and if so, branches to the process S23 to search for the disk-related still image of the earlier application. I do. If not stored, the process branches to step S24.

The process S24 controls the servo section 6, the signal demodulation section 8 and the memory control section 10 based on the contents of the still picture TOC memory 16 to transfer the still picture data from the disk to the still picture data memory 17. This shows the reading process.

The process S25 controls the servo section 6, the signal demodulation section 8 and the memory control section 10 based on the contents of the still picture TOC memory 16 to transfer the still picture data from the disk 1 to the still picture data memory 17 Shows the reading process.

At this time, the track number TNO (i) of the still picture TOC stored in the still picture TOC memory 16.
1, the disk still image data of TNO (i) = 0 is taken in first.

The processing S26 is based on the contents of the still picture TOC memory 16, when the leading disk-related still picture data (TNO (i) = 0) out of the 20 still picture data has been fetched. , Branching to step S27, otherwise branching to step S25.

In step S27, the disk-related still image data is read from the still image data memory 17 and the still image display unit 19
To update the still image.

Next, the process S28 in FIG. 3 shows a process of searching the still image TOC memory 16 for disk-related still image data (TNO = 0).

According to the processing described so far, when the disk-related still image data is already registered in the still image TOC memory 16 at the time of disk replacement, the still image TOC
The disk-related still image on the memory 16 is read out and displayed immediately. Otherwise, the still image TO is read from the disk.
C, and based on it, the disk-related still image data is stored in the still image data memory 17, and when the same disk is selected again, the disk-related data is quickly displayed without reading the still image data from the disk. can do.

Next, a process of reading the track-related still image data associated with the rest of the disk-related still image data and the track after the display of the disk-related data is completed and the reproduction instruction is ready to be received, and A procedure for reading audio data and outputting audio will be described.

In step S28, it is checked whether or not a reproduction instruction has been issued from the operation input unit 14. If there is a reproduction instruction, the flow branches to step S29. The processing for executing S30 will be described.

The process S30 controls the servo unit 6, the signal demodulation unit 8 and the memory control unit 10 to read the TOC
And the still image TOC are read, and
And the process of storing in the still image TOC memory 16.

The processing S 31 controls the servo section 6, the signal demodulation section 8 and the memory control section 10 based on the contents of the still picture TOC memory 16 to transfer the still picture data from the disk 1 to the still picture data memory 17. Shows the reading process.

In step S29, based on the contents of the still picture TOC memory 16 and the still picture data memory 17, whether the track-related still picture data at the beginning of the track whose reproduction has been instructed has already been taken into the still picture data memory 17 or not. It is checked whether or not the processing has been performed.
33 shows a process for executing the process, and otherwise executing a process S30.

The determination as to whether the track-related still picture data at the beginning of the track has already been taken into the still picture data memory 17 is stored in the still picture TOC memory 16 corresponding to the track number of the currently reproduced track. The track-related still image data whose offset address OFS (FIG. 11) of the track number TNO (FIG. 11) of the still image TOC is 0 to 31 (corresponding to 0 second to about 2 seconds from the beginning of the track) is stored in the still image data memory. It checks whether it is stored or not.

In step S32, based on the contents of the still picture TOC memory 16 and the still picture data memory 17, it is checked whether or not all the 20 still picture data have been loaded into the still picture data memory 17, and the data has been loaded. If so, processing S
The process branches to step 33, and otherwise executes step S17 (FIG. 2).

Processing S33 is performed when the memory full flag MF output from the memory control unit 10 becomes 1, that is, when the shock proof memory 9 becomes full.
, And if not, the process branches to step S35.

The process S35 controls the servo section 6, the signal demodulation section 8 and the memory control section 10 based on the contents of the still picture TOC memory 16 to transfer the still picture data from the disk 1 to the still picture data memory 17 Shows processing to stop reading.

The process S36 is a process for controlling the servo unit 6, the signal demodulation unit 8, and the memory control unit 10 to stop reading audio data from the disk.

In step S37, when the reading of the audio data has not started, the servo unit 6, the signal demodulating unit 8 and the memory control unit 10 are controlled to start reading the audio data from the disk 1. When the reading of the audio data is not started and stored in the shock proof memory 9, the processing of reading the audio data is continued.

In step S38, based on the contents of the still picture TOC memory 16 and the still picture data memory 17, it is checked whether or not all 20 still picture data have been loaded into the still picture data memory 17, and the still picture data has been loaded. If so, processing S
The process branches to step 40, and otherwise executes step S39.

The processing S39 controls the servo section 6, the signal demodulation section 8 and the memory control section 10 based on the contents of the still picture TOC memory 16 to transfer the still picture data from the disk 1 to the still picture data memory 17 Shows the process of starting reading.

At this time, by referring to the offset address OFS of the still picture TOC stored in the still picture TOC memory 16, the still picture data is read in ascending order of the offset address and stored in the still picture data memory 17.

The process S40 is performed at the offset address OF of the still picture TOC data taken into the still picture TOC memory 16.
Based on S (FIG. 11), it is determined whether or not there is a still image to be displayed at the currently sounding position. If there is a still image to be displayed, the process branches to processing 41; In
The process branches to process S43.

The process S41 checks whether or not the still image to be displayed specified in the process S40 is stored in the still image data memory 17, and if it is stored, the process branches to the process S42. For example, the process branches to the process S43.

In a step S42, the still image data is read out from the still image data memory 17 and transferred to the still image display section 19,
The process of updating a still image is shown.

The process S43 checks whether or not an instruction to stop reproduction has been issued from the operation input unit 14. If the instruction to stop reproduction has been issued, the process branches to step S44. If not, the process branches to process S45. Show.

The process S44 controls the voice decompression unit 11 to
A process of stopping reading audio data from the shock proof memory 9 and stopping transmission of audio data to the DAC 12 will be described.

In the process S45, the track that produces the sound is
It is determined whether or not the track changes to a new track. If the track has changed to a new track, the process branches to step S29; otherwise, the process branches to step S33.

Next, the capture and display of still image data by the system control unit 13 and the control of the shockproof memory 9 will be described in more detail (corresponding to S28 to S43 in the flowchart of FIG. 3).

FIG. 4 is a timing chart showing the operation of loading audio data into the shockproof memory 9 and the operation of loading still image data on the disk into the still image data memory 17 according to the first embodiment. MS, MF, TRON, DEMAE
N and SPMWEN are the same as those described with reference to FIG.

DSIWE shown in FIG. 4 indicates a process for loading still image data on the disk into the still image data memory 17, and when DSIWE = 1 indicates that still image data loading process is being executed.

When the reading of the TOC and the still image TOC data is completed in step S30, the system control unit 13 accesses the still image data on the disk 1 in step S31 if there is no reproduction instruction from the operation input unit 14, and At time L, the capture of still image data into the still image data memory 17 starts.

When the system control unit 13 receives a reproduction instruction from the operation input unit 14 at time A, the still image data to be displayed at the beginning of the track for which reproduction has already been instructed is stored in the still image data memory 17 in step S29. After confirming that the full flag MF of the shock proof memory 9 has been confirmed, the process branches to step S33.
That is, after confirming that the shock proof memory 9 is not full, the processing branches to step S35, and the processing S
The reading end processing of 35 still image data is executed.

Next, the system control unit 13 confirms in step S38 that the reading of the still image data has not been completed, confirms in step S40 whether there is a still image to be displayed, and in step S41 corresponds to the head of the track. It is confirmed that the still image data to be stored is stored in the still image data memory 17, and the process proceeds to step S42.
To display a still image.

Next, the system control unit 13 again executes the processing in step S33.
Check the full flag MF of the shock proof memory 9 to confirm that it is set to 1, that is, that the voice data stored in the shock proof memory 9 is full. Of the still image data into the still image data memory 17 is started.

At the time C, the system control unit 13 executes the process S33.
At the full flag MF of the shockproof memory 9
Is confirmed to be 0, that is, the sound data stored in the shock proof memory 9 is equal to or less than (full-M), and the flow branches to the processing S35 to execute the processing S35 at the time M. Of the still image data is read.

Hereinafter, the processing from time P to time T is a repetition of the processing from time N to time O.

If the system control unit 13 determines in step S38 that all the 20 still image data have been stored in the still image data memory 17 in step S38, the process skips step S39 and thereafter proceeds to step S39. Do not capture.

According to the above-described processing, when disk-related still image data has already been registered in the still image TOC memory 16 at the time of disk replacement, the disk-related still image on the still image TOC memory 16 is read and immediately read. If not, the still image TOC is read from the disk, and the disk-related still image data is stored in the still image data memory 17 based on the read TOC. If the same disk 1 is selected again, the still image TOC is read from the disk. The disk-related data can be displayed quickly without reading the image data, and the reproduction instruction can be received immediately after the minimum disk-related still image has been captured, so that the sound reproduction is delayed. Nothing.

(Embodiment 2) The configuration of a disk reproducing apparatus according to Embodiment 2 of the present invention is the same as that of FIG. 1 except that the processing contents of the system control unit 13 are different.
The operation will be described with reference to FIG.

In the second embodiment, when a disc is inserted, regardless of whether the inserted disc is selected (loaded) or not, the disc 1 is selected by fetching the disc-related data into the still picture data memory 17. In this case, a disk-related still image can be displayed immediately when it is displayed.

FIG. 5 is a flowchart showing a first processing content of the system control unit 13 according to the second embodiment of the present invention.

In FIG. 5, the process S46 shows a process of branching to the process S47 when a new disc is detected from the disc detection unit 18, and re-executing the process S46 otherwise.

Step S47 shows a process for setting the disc insertion flag to 1.

The process S48 is a process for writing the number of the holder of the disc changer 20 of the newly inserted disc 1 sent from the disc detecting section 18 into the inserted disc number memory. This insertion disc number memory uses a part of the memory mounted in the system control unit 13.

According to the above processing, another process of the system control unit 13 can detect the occurrence of the disk insertion by monitoring the disk insertion flag.

FIG. 6 is a flowchart showing the second processing content of system control unit 13 in the second embodiment of the present invention. This process is used as a subroutine in the third process of the second embodiment of the present invention.

In FIG. 6, in a process S49, the disc insertion flag controlled by the first process of the system control unit 13 is checked. If it is 1, the process branches to a process S50, and if not, the process is terminated. Indicates processing.

The process S50 is a process for reading the inserted disc number stored in the inserted disc number memory and instructing the disc changer 20 to load the disc 1 stored in the holder corresponding to this number.

The process S51 controls the servo unit 6, the signal demodulation unit 8 and the memory control unit 10 to read TO
C and the still image TOC data are read and the TOC
The processing to be stored in the memory 15 and the still image TOC memory 16 is shown.

In step S52, the servo section 6, the signal demodulation section 8 and the memory control section 10 are controlled based on the contents of the still picture TOC memory 16 so that the still picture data for one sector is The processing to be read into the image data memory 17 is shown.

In step S53, based on the contents of the still picture TOC memory 16, the first disk-related still picture data (TNO
If the acquisition of (i) = 0) is completed, the process branches to step S54, and if not, the process branches to step S52.

The processing S54 shows the processing for clearing the disk insertion flag.

According to the second processing of the system control unit 13,
Since the first disk-related still image data of the inserted disk 1 can be taken into the still image data memory 17, the first disk-related still image data can be immediately displayed when this disk 1 is selected. it can.

FIGS. 7 and 8 are flowcharts showing the third processing content of the system control unit 13 according to the second embodiment of the present invention.

Since the contents of this processing are substantially the same as those of the flow charts shown in FIGS. 2 and 3 showing the operation of the first embodiment of the present invention, only different parts will be described. The difference from the flowcharts of FIGS. 2 and 3 is that
In FIG. 7, step S55 is inserted before step S17, and in FIG. 8, step S56 is inserted after step S36. The processing S55 in FIG. 7 and the processing S56 in FIG. 8 are the same processing, and are the processing subroutine at the time of inserting the disc described in FIG.

When the disc insertion flag is set in the first processing of the system control unit 13 by adding the subroutine to the two locations, the disk-related still image data is stored in the still image data memory 17 at the two locations. The save is performed.

That is, while waiting for the reproduction instruction in the processing S28 in FIG. 8, the storage of the disk-related data in the still image data memory 17 is executed in the processing S55 in FIG. When the sound data is not stored in the shock proof memory 9, the processing in FIG.
At 56, storage of the disk-related still image data in the still image data memory 17 is performed.

As described above, according to the second embodiment, when a disc is inserted, regardless of whether the inserted disc 1 is selected (loaded) or being reproduced, the disc-related still image data Can be displayed in the still image data memory, and thereafter, when a disk is selected, a disk-related still image can be displayed immediately.

(Embodiment 3) The disk reproducing apparatus according to Embodiment 3 of the present invention reads out the disk-related still image data of all the disks stored in the disk changer 20 when the power is turned on, and when a disk is selected. The disk-related still image can be immediately displayed on the computer.

FIG. 9 is a block diagram showing a configuration of a disc reproducing apparatus according to Embodiment 3 of the present invention.

The configuration other than the power-on detection circuit 21 is the same as that of the first embodiment of the present invention described with reference to FIG.

The power-on detection circuit 21 detects the rise of the power and resets the system control unit 13.

Next, the operation of the third embodiment will be described.

FIG. 10 is a flowchart showing the processing contents of the system control unit 13 according to the third embodiment of the present invention.

In FIG. 10, a process S57 shows a process of setting 1 to the insertion disk number memory.

The process S58 shows a process of branching to a process S59 when a disc is stored in the holder corresponding to the inserted disc number of the disc changer 20, and a process of branching to a process S60 otherwise.

The processing in step S59 is the same as that in FIG.
This is the same process as the process performed when a disc is inserted as described above.
Here, disk-related still image data from the disk 1 is stored in the still image data memory 17.

The process S60 shows a process for incrementing the insertion disc number.

In the step S61, when the value of the insertion disk number memory becomes 5, the processing is ended, and when not, the processing is ended.
The process branches to process S58.

In the third embodiment, when the power is turned on, the disk-related still image data of all the disks stored in the disk changer 20 is stored in the still image data memory 17.
, So that when a disk is selected, the disk-related data of the relevant disk can be displayed immediately.

[0146]

As described above, in the disk reproducing apparatus of the present invention, the system control unit controls the Nth (N = N) of the disk changer based on the input from the operation input unit.
When loading of the N-th disk stored in the holder (1, 2, 3...) Is instructed, the auxiliary data TO
When the disk auxiliary data corresponding to the Nth disk in the C memory is searched, and the auxiliary data is not extracted,
Disk changer, servo part, signal demodulation part,
The auxiliary data TOC is read from the Nth disk by controlling the memory control unit and stored in an area of the auxiliary data TOC memory corresponding to the Nth disk. Search the disk auxiliary data corresponding to the disk, and when the disk auxiliary data is extracted, read the disk auxiliary data on the disk,
When the disk auxiliary data is stored in an area corresponding to the Nth disk auxiliary data of the auxiliary data memory, the disk auxiliary data is sent to the auxiliary data display section, and the disk auxiliary data is displayed. The disk auxiliary data corresponding to the N-th disk is transmitted from the auxiliary data memory to the auxiliary data display section, the disk auxiliary data is displayed, and the disk to be removed when the operation input section instructs to remove the disk is supported. By arranging the disk auxiliary data to be erased from the auxiliary data TOC memory or in a state where erasure is permitted, the disk auxiliary data is taken from the disk into the memory at the time of the first disk selection, and is stored in the memory after the second time. Disk auxiliary data, so that it is almost The contents of the disk auxiliary data associated with the disk can be displayed without having to perform the operation, and the disk auxiliary data relating to the disk removed from the disk changer can be quickly erased from the memory, so that memory resources are effectively used. can do.

Further, in the disc reproducing apparatus of the present invention, when the disc detecting section detects the insertion of the disc into the M-th (M = 1, 2, 3,...) Holder of the disc changer, the demodulating section demodulates to the shockproof memory. If the demodulated music data is stored and the demodulated music data is not stored in the shock proof memory after the music data is stored, the loading, the servo, and the signal are immediately performed. By controlling the demodulation section and the memory control section, the auxiliary data TOC on the inserted disc is controlled.
Is read out and stored in the area corresponding to the M-th disk in the auxiliary data TOC memory, and the disk auxiliary data corresponding to the M-th disk in the auxiliary data TOC memory is searched, and the auxiliary data is not extracted. Sometimes, the auxiliary data on the disk is read and the
By storing the data in the area corresponding to the disc auxiliary data, the disk-related data can be taken into the auxiliary data memory when the disc is inserted, even if another disc is being played. When the disk is selected, the disk auxiliary data can be displayed immediately.

Further, according to the disk reproducing apparatus of the present invention, when the system control section receives a power-on instruction from the power-on detection circuit, the disk detection section checks the presence / absence of a disk detected by the disk detection section, and checks the Mth of the disk changer. When a disc is placed in the (M = 1, 2, 3,...) Holder, the disc changer, the servo section, the signal demodulation section, and the memory control section are controlled to control the auxiliary on the inserted disc. After reading the data TOC and storing it in the area corresponding to the Mth disk of the auxiliary data TOC memory,
The auxiliary data TOC memory is searched for disk auxiliary data corresponding to the Mth disk, and if no auxiliary data is extracted, the auxiliary data on the disk is read and the Mth disk auxiliary data in the auxiliary data memory is read. The process of storing data in an area corresponding to data is from M = 1 to P (P = 1, 2, 2).
3)), the disk auxiliary data of all the disks stored in the disk changer is read out when the power is turned on, and stored in the auxiliary data memory. The disk auxiliary data can be displayed immediately when it is executed.

Further, when the auxiliary data has a predetermined capacity or number or less, the disk reproducing apparatus of the present invention reads all of the auxiliary data on the disk and stores it in the auxiliary data memory. When the number exceeds the number, the auxiliary data on the disk is stored in a predetermined capacity or the number of auxiliary data memories, the auxiliary data is transmitted to the auxiliary data display section, and the auxiliary data is displayed. In the period until the playback command is received, only the minimum auxiliary data associated with the disc is read, and the time for reading the auxiliary data is minimized. , And a reproduction command can be immediately received.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a disc reproducing apparatus according to Embodiment 1 of the present invention.

FIG. 2 is a flowchart showing an operation of a system control unit of the disk reproducing device according to the first embodiment of the present invention;

FIG. 3 is a flowchart showing an operation of a system control unit of the disk reproducing device according to the first embodiment of the present invention.

FIG. 4 is a timing chart showing an operation of loading audio data into a shockproof memory and an operation of loading still image data on a disk into a still image data memory according to the first embodiment of the present invention;

FIG. 5 is a flowchart showing a first processing content of a system control unit according to the second embodiment of the present invention;

FIG. 6 is a flowchart showing a second processing content of a system control unit according to the second embodiment of the present invention;

FIG. 7 is a flowchart showing a third processing content of the system control unit according to the second embodiment of the present invention;

FIG. 8 is a flowchart showing a third processing content of the system control unit according to the second embodiment of the present invention;

FIG. 9 is a block diagram showing a configuration of a disc reproducing apparatus according to Embodiment 3 of the present invention.

FIG. 10 is a flowchart showing processing contents of a system control unit according to the third embodiment of the present invention.

FIG. 11 is a diagram showing the contents of a still picture TOC memory in a conventional example.

FIG. 12 is a flowchart showing the operation of a system control unit in a conventional example.

FIG. 13 is a timing chart showing an operation of loading voice data into a shock-proof memory in a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Magneto-optical disk (optical disk) 2 Spindle motor 3 Optical pickup 4 Traverse motor 5 Motor driver 6 Servo unit 7 Reproduction amplifier 8 Signal demodulation unit 9 Shock proof memory 10 Memory control unit 11 Audio expansion unit 12 DAC 13 System control unit 14 Operation input Unit 15 TOC memory 16 Still image TOC memory 17 Still image data memory 18 Disk detection unit 19 Still image display unit 20 Disk changer 21 Power-on detection circuit

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (reference) G11B 27/10 L F term (reference) 5D044 AB08 BC03 CC04 DE38 DE54 DE91 GL02 5D066 BA03 BA05 5D072 CA17 CB03 EB12 5D077 AA26 CA02 DC08 HC12

Claims (7)

[Claims] 1. A spindle motor for rotating a disc, a pickup for reading information recorded on the disc and reproducing a signal, and a plurality of holders for storing a plurality of discs. A disc changer that loads the disc onto the spindle motor, a disc detection unit that detects the presence or absence of a disc in a plurality of holders of the disc changer, a servo unit that controls the spindle motor, the pickup, and the pickup. A signal demodulation section for demodulating the reproduced signal, an audio output section for outputting audio data demodulated in the signal demodulation section, and an auxiliary data table of contents (TOC) demodulated in the signal demodulation section
, An auxiliary data memory for storing the auxiliary data demodulated in the signal demodulator, an auxiliary data display for displaying the contents of the auxiliary data, the auxiliary data memory, and the auxiliary data TOC. A memory control unit for controlling a memory, an operation input unit for a user to set various operation modes of the apparatus, and the disk changer, the servo unit, and the signal based on an input from the operation input unit. A system control unit that controls the demodulation unit, the memory control unit, and the audio output unit, wherein the system control unit is configured to perform an Nth (N) th operation in the disc changer based on an input from the operation input unit. N
= 1, 2, 3,...), The loading of the Nth disk is instructed, and the auxiliary data TOC memory corresponding to the Nth disk and associated with the entire disk When the disk auxiliary data is searched for and the disk auxiliary data is not extracted, the disk control unit controls the disk changer, the servo unit, the signal demodulation unit, and the memory control unit to read the Nth disk. After reading the auxiliary data TOC and storing it in the area corresponding to the Nth disk of the auxiliary data TOC memory, the auxiliary data TOC memory is searched for disk auxiliary data corresponding to the Nth disk, and the disk auxiliary data TOC is retrieved. When the data is extracted, the disk auxiliary data on the disk is read and the Nth disk auxiliary data in the auxiliary data memory is read. The auxiliary data display unit sends the disk auxiliary data to the auxiliary data display unit and displays the contents of the disk auxiliary data. When the disk auxiliary data is extracted, the auxiliary data memory A disc reproducing apparatus for transmitting disc auxiliary data corresponding to the N-th disc to the auxiliary data display section to display the disc auxiliary data. 2. A spindle motor for rotating a disc, a pickup for reproducing a signal obtained by reading information recorded on the disc, and a plurality of holders for storing a plurality of discs. A disc changer that loads the disc onto the spindle motor, a disc detection unit that detects the presence or absence of a disc in a plurality of holders of the disc changer, a servo unit that controls the spindle motor, the pickup, and the pickup. A signal demodulation unit for demodulating a reproduced signal, an audio output unit for outputting audio data demodulated in the signal demodulation unit, an auxiliary data TOC memory for storing auxiliary data TOC demodulated in the signal demodulation unit, The auxiliary data demodulated by the signal demodulation unit An auxiliary data memory for storing data,
An auxiliary data display unit for displaying the contents of the auxiliary data, the auxiliary data memory, a memory control unit for controlling the auxiliary data TOC memory, an operation input unit for a user to set each operation mode of the device, A system control unit that controls the disc changer, the servo unit, the signal demodulation unit, the memory control unit, and the audio output unit based on an input from an operation input unit; When the disk detection unit detects insertion of a disk into the M-th (M = 1, 2, 3,...) Holder of the disk changer, the disk changer, the servo unit, and the signal demodulation unit , Reading the auxiliary data TOC from the inserted disk by controlling the memory control unit and corresponding to the M-th disk of the auxiliary data TOC memory. After the disk auxiliary data corresponding to the M-th disk is retrieved from the auxiliary data TOC memory, and the disk auxiliary data is extracted, the auxiliary data on the disk is read. A disk reproducing apparatus for storing data in an area corresponding to auxiliary data of an Mth disk in a data memory. 3. A shock-proof memory for storing audio data demodulated by the signal demodulation unit, the shock-proof memory, the auxiliary data memory, and an auxiliary TOC.
A memory control unit that controls a memory; and an audio output unit that outputs audio data stored in the shock-proof memory, wherein the disk detection unit is an M-th disk changer.
When the signal demodulation unit stores the demodulated music data in the shock proof memory when the insertion of the disc into the numbered (M = 1, 2, 3,...) Holder is detected, the storage of the music data is completed. When the signal demodulation unit does not store the demodulated music data in the shock proof memory, the loading, the servo unit, the signal demodulation unit, and the memory control unit are immediately controlled and inserted. The auxiliary data TOC on the read disk is read and stored in an area of the auxiliary data TOC memory corresponding to the M-th disk, and the disk auxiliary data corresponding to the M-th disk in the auxiliary data TOC memory is searched. If the auxiliary data is not extracted, the auxiliary data on the disk is read and the auxiliary data of the Mth disk in the auxiliary data memory is read. Disk reproducing apparatus according to claim 2, characterized in that stored in the corresponding region. 4. The system control unit, upon receiving a power-on instruction from the power-on detection circuit, checks information on the presence / absence of a disk detected by the disk detection unit.
The Mth disc changer (M = 1, 2, 3 ...,
When a disk is inserted in the holder of P (P = 2, 3, 4...), The disk changer, the servo unit, the signal demodulation unit, and the memory control unit are controlled to insert the disk. The auxiliary data TOC on the read disk is read and stored in an area of the auxiliary data TOC memory corresponding to the M-th disk, and the disk auxiliary data corresponding to the M-th disk in the auxiliary data TOC memory is searched. If the auxiliary data is not extracted, the process of reading the auxiliary data on the disk and storing it in an area corresponding to the auxiliary data of the Mth disk in the auxiliary data memory is repeated from M = 1 to P. 4. The disc reproducing apparatus according to claim 1, wherein 5. When the auxiliary data has a predetermined capacity or number or less, all of the auxiliary data on the disk is read and stored in an auxiliary data memory, and the auxiliary data has a predetermined capacity or number. If it exceeds, store the predetermined capacity or number of the auxiliary data on the disk in an auxiliary data memory, send the auxiliary data to the auxiliary data display unit, display the auxiliary data, and then display the operation input unit. 5. The disk reproducing apparatus according to claim 1, wherein the state transits to a state in which a reproduction command is received. 6. The disk auxiliary data corresponding to a disk to be taken out is erased from the auxiliary data TOC memory when the instruction to eject the disk is given from the operation input unit, or the disk is set to a state in which erasure is permitted. ,
6. The disc reproducing apparatus according to 2, 3, 4 or 5. 7. A spindle motor for rotating a disk, a pickup for reading information recorded on the disk and reproducing a signal, a servo unit for controlling the spindle motor and the pickup, and a reproduction unit for reproducing the signal from the pickup. A signal demodulating section for demodulating the signal, an audio output section for outputting audio data demodulated in the signal demodulating section, an auxiliary data TOC memory for storing auxiliary data TOC demodulated in the signal demodulating section, An auxiliary data memory for storing auxiliary data demodulated by the demodulation unit, an auxiliary data display unit for displaying auxiliary data, the auxiliary data memory, a memory control unit for controlling the auxiliary data TOC memory, and insertion of a disk. The disk detector to be detected and the user sets various operation modes of the device An operation input unit for controlling the disc changer, the servo unit, the signal demodulation unit, the memory control unit, and the audio output unit based on an input from the operation input unit. When the disk detection unit detects insertion of a disk, the system control unit controls the servo unit, the signal demodulation unit, and the memory control unit to store auxiliary data TOC on the disk. After storing in the auxiliary data TOC memory,
The disk auxiliary data is searched, and when the auxiliary data is less than a predetermined capacity or number, all of the auxiliary data on the disk is read and stored in an auxiliary data memory, and the auxiliary data has a predetermined capacity or When the number exceeds the number, the predetermined capacity or the number of the auxiliary data on the disk is stored in an auxiliary data memory, the auxiliary data is sent to the auxiliary data display unit, and the auxiliary data is displayed. Transitioning to a state in which a playback command is received from the input unit, and thereafter, when a playback command is issued from the operation input unit, read out audio data from the disk and play back audio from the audio output unit. A disk reproducing device characterized by the above-mentioned.