JP2001148154A - Sound and image reproducing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem where the period, when nothing is shown on a display screen is increased when a part of attribute in formation on the image data, will not be recorded on a medium. SOLUTION: A system control means 28 instructs a reading means 21 to store the TOC recorded on a medium 20 into a read memory 22 for a period, when a power supply detection means 26 detects the application of a power supply or a medium detection means 25 detects the insertion of the medium 20, and then an operation input means 27 generates an instruction for reproducing the audio data. Then the means 28 refers to the information on the image data on the TOC stored in the memory 22 and instructs an image display means 30 to read a piece of image data representing the medium 20 out of this medium, if available and to display it. When plural pieces of image data representing the medium 20 are available, the means 28 gives instruction to read these image data out of the medium 20 and to display them successively for every prescribed time.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sound / image recording medium for recording at least audio data, image data, and TOC (Table Of Contents), such as a semiconductor recorder, a DVD, a hard disk for AV use, and an MD (mini disk). Related to playback devices. Here, the TOC is a list of data contents, and additional information such as data attribute information and reproduction timing information may be recorded on the medium.

[0002]

2. Description of the Related Art A conventional audio / video reproducing apparatus will be described below with reference to the drawings. In this conventional example, M
This will be described by taking the D system as an example. The configuration of the MD system is described in Nikkei Electronics Magazine No. 53
5, 1991.9.2, pages 127 to 141.

FIG. 11 is a block diagram showing a configuration of a conventional MD reproducing apparatus. In FIG. 11, reference numeral 1 denotes a magneto-optical disk or an optical disk, and is 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 is controlled by the traverse motor 4. The traverse motor 4 is driven by a servo unit 6 via a motor driver 5.

[0004] The servo section 6 controls the number of revolutions of the disc 1 by a frame clock supplied from the signal demodulation section 8 during reproduction of the optical disc. Servo unit 6
Is a signal demodulation unit 8 for reproducing or recording a disc.
The number of revolutions of the disk is controlled by the bit clock of the ADIP (address implement group) signal generated in step (1).

[0005] The reproduction amplifier 7 performs current-voltage conversion of the reproduction signal reproduced by the optical pickup 3, equalizes the waveform, and supplies it to the signal demodulation unit 8. The reproduction amplifier 7 converts the ADIP signal reproduced by the optical pickup 3 from current to voltage and supplies it to the signal demodulation unit 8. The method of separating the reproduction signal from the optical pickup 3 from the ADIP signal is described in Nikkei Electronics No. 535, 1991.9.2 No.127
Pp. 141-141. The playback amplifier 7
After current-voltage conversion of the signal reproduced by the optical pickup 3, a signal for servo is generated and supplied to the servo unit 6.

When the system control unit 13 instructs demodulation, the signal demodulation unit 8 extracts a clock from a reproduction signal supplied from the reproduction 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 audio data memory 9.

[0007] The signal demodulation section 8 converts the frame clock (about 7.35 kHz) detected at the time of demodulation into a servo section 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 converts the ADIPAD (address data) of the ADIP into a system. It is sent to the control unit 13. Audio data memory 9
Is a memory for storing the corrected audio data output from the signal demodulation unit 8.

[0008] The memory control unit 10 determines whether the amount of data stored in the audio data memory 9 has reached the upper limit of the memory capacity based on the amount of data stored in the audio data memory 9. 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).

The memory control unit 10 sets a memory empty flag ME when the amount of data stored in the audio data memory 9 reaches 0, and sets a memory empty flag ME when the amount of data exceeds 4 sectors. Release the empty flag ME.

The system control unit 13 includes a 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 audio 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.

The memory control unit 10 also controls the TOC memory 15 and the still image T based on an instruction from the system control unit 13.
It controls reading and writing of data in the OC memory 16 and the still image data memory 17.

The operation input unit 14 starts 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.

The TOC memory 15 is a memory for storing a set of a track (song) and a head address of the track, which is read by the signal demodulation unit 8 and recorded on the disk 1. The still image TOC memory 16 stores the still image T on the disk read out by the instruction of the system control unit 13.
Stores OC data. In the still image TOC memory 16,
20 pieces of still image data associated with the track are stored. The still image TOC is a set of data indicating the recording position of the still image data associated with the track on the disk and the timing of displaying the associated track.

Next, the contents of the still picture TOC memory 16 will be described. STAD (i) is 3-byte data indicating the start address of the still image i on the disk, ENDAD (i) is 3-byte data indicating the end address of the still image i on the disk, and TNO (i) is the still image i. Is a one-byte data indicating the track number of the track associated with., And OFS (i) is a three-byte data indicating the display timing (offset address from the beginning of the track) of the still image i.

The still image data memory 17 stores the still image data on the disk 1 read out according to an instruction from the system control unit 13. The still image data memory 17 stores the 2nd track associated with the track by the still image TOC.
Zero still image data is stored. Still picture TOC data on the disc 1 is also stored in a similar format.

The disk detector 18 detects whether a disk has been inserted 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.

The still image display unit 19 generates a video signal to be displayed on a television receiver or the like based on the data sent from the still image data memory 17.

Next, the operation of the conventional MD reproducing apparatus will be described with reference to the drawings. FIG. 12 is a flowchart showing the operation of the system control unit 13 of the conventional example.

In step S1, the system control unit 13 monitors the disk detection signal from the disk detection unit 18, and when the disk 1 changes from the presence state to the absence state, the processing S
2 shows a process of branching to step S2, and otherwise executing step S1 again.

The process S2 controls the servo unit 6, the signal demodulation unit 8 and the memory control unit 10 to read the TOC
Data and still image TOC data
The process of storing in the C memory 15 and the still image TOC memory 16 is shown.

In step S3, 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 of one sector is The process of reading data into the data memory 17 will be described. At this time, with reference to the offset address OFS of the still image TOC stored in the still image TOC memory 16, the still image data with the smaller offset address is read out in order and stored in the still image data memory 17. By doing so, the timings to be displayed are stored in the still image data memory 17 in order from the still image data near the beginning of the track.

The process S4 is a process of branching to the process S5 when all the 20 still image data have been fetched based on the contents of the still image TOC memory 16, and branching to the process S3 otherwise.

In step S5, 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 process branches to step S6. If there is no reproduction instruction, the process S5 is executed again. Indicates processing.

The process S6 is performed when the memory full flag MF output from the memory control unit 10 becomes 1, that is, when the audio data memory 9 becomes full.
The process branches to step S9 otherwise.

The process S7 controls the audio decompression unit 11,
The audio data is read out from the audio data memory 9, expanded by the audio expansion unit 11,
12 shows a process of starting transmission of audio data to the H.12.

In step S8, the servo unit 6, the signal demodulation unit 8 and the memory control unit 10 are controlled to stop reading audio data from the disk 1 to the audio data memory 9.

In step S9, when the reading of the audio data is not started, the servo unit 6 and the signal demodulation unit 8
And the memory control unit 10 to start reading audio data from the disk 1 and store the data in the audio data memory 9. When the reading of audio data is started, the audio data reading process is continued. The following shows the processing to be performed.

In step S10, the difference between the start address of the currently reproduced track stored in the TOC memory 15 and the address of the audio data currently being reproduced, and the still image TO
The offset address OFS of the still image TOC data taken into the C memory 16 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 S11; otherwise, the process branches to step S12.

The process S11 is a process for reading out still image data from the still image data memory 17, transferring the data to the still image display unit 19, and updating the still image.

In step S12, 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 S13. If not, the flow branches to step S6.

The process S13 is a process of controlling the audio decompression unit 11 to stop reading the audio data from the audio data memory 9 and stop sending the audio data to the DAC 12.

Next, the control of the audio data memory 9 by the system control unit 13 will be described in more detail.
(Corresponding to S6 to S12 in the flowchart of FIG. 12) FIG. 13 is a timing chart showing the operation of loading audio data into the audio data memory 9 of the conventional MD reproducing apparatus. In FIG. 13, MS indicates the storage state of audio data in the audio data memory 9;
Full on the vertical axis indicates that the audio data memory 9 is full, (full-M) indicates that the free space of the audio data memory 9 is M (M = 4) sectors, and (empty +
N) indicates a state in which data for N (N = 4) sectors is stored in the audio data memory 9. Empty indicates that the audio data 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 audio data memory 9 becomes full, and sets the free space of the audio data memory 9 to 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,
At time A, the audio data memory 9 starts playing at a constant rate X from an empty state. At time B, the audio data memory 9 becomes full. System control unit 13
Prohibits writing of corrected data from the signal demodulation unit 8 to the audio data memory 9 when the memory full flag MF is turned on at time B. That is, the flag DEMAEN indicating signal demodulation and the audio data memory 9
The data transfer instruction SPMWEN is turned off.

At time B, the system control unit 13 prohibits writing of corrected data from the signal demodulation unit 8 to the audio data memory 9 and then instructs the servo unit 6 to perform a track jump to the next sector. Normally, access to the sector next to the sector in the audio data memory 9 is instructed by time B. When access is completed, servo unit 6
, The tracking signal TRON supplied to the system control unit 13 is turned on.

Thereafter, no data is written to the audio data memory 9 until time C. The audio decompression unit 11 reads data from the audio data memory 9 at a rate of X / 5. Next, at time C, when the data amount of the audio data memory 9 becomes (full-M), the system control unit 13 turns on the signal demodulation flag DEMAEN.

Next, the system control unit 13 controls the signal demodulation unit 8
After confirming that the ADIPAD sent from the address is the address indicating the sector immediately before the sector to be fetched next, the data transfer instruction SPMWE is sent to the signal demodulation unit 8 at time D.
N is issued to instruct the transfer of data to the audio data 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 audio data 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 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, and when the address to be displayed is reached,
The contents of the still image data memory 17 are transferred to the still image display unit 19, and the still image is updated.

By performing the above control, when a new track is instructed from the operation input unit 14, first, the still image data corresponding to the desired track is read and displayed, and then the sound is output. Can be played.
Further, the audio data memory 9 usually contains (full-
M) The corrected data above is stored, and due to vibration, etc.
Even if demodulation is not possible, the audio expansion processing can be continued using the corrected data in the audio data 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 track. However, if data such as a moving image or text can be associated with a track, the same effect can be obtained. Data associated with a track such as an image is referred to as image data.

[0043]

However, in the above conventional example, when a part of the information regarding the TOC image data is not recorded on the medium, there is a problem that the time during which nothing is displayed on the display screen continues for a long time. there were. Alternatively, when the reproduction timing information of the image is not recorded, it is necessary for the user to operate the screen display one by one, so that there is a problem that the usability is poor.

Further, in the above conventional example, when a plurality of image data representing a medium exists, the same image is continuously displayed, and if the user does not perform any operation, the plurality of image data is displayed on a screen. There was a problem that can not be.

The present invention solves the above-mentioned problems of the prior art. When the power is turned on or when a medium (mini disk) is inserted, the TOC is immediately stored in the medium (mini disk).
(1) When one piece of image data representing the medium exists, the image data representing the medium is read out from the medium and displayed. When a plurality of pieces of image data representing the medium exist, the medium represents the medium. By reading a plurality of image data from the medium and displaying the image data sequentially every time a predetermined time elapses, a variety of image data can be displayed even if the user does not perform an operation of instructing the display one by one. The purpose is to be.

(2) When one piece of image data representing the medium exists, the image data representing the medium is read out from the medium and displayed, and when a plurality of pieces of image data representing the medium exist, the image data is determined in advance. By reading the plurality of image data representative of the medium from the medium and displaying the divided image on the image display screen, even if the user does not perform the operation of instructing the display one by one, various image data displays can be performed. The purpose is to be able to do it.

(3) When there is no image data representative of the medium, an image or a character prepared in advance is displayed on the audio / image reproducing apparatus so that the time during which nothing is displayed on the display screen is displayed. To display a variety of image data without continuing for a long time.

(4) When there is no image data representing the medium, the image data associated with the smallest track number or the largest track number is read out from the medium and displayed.
Update the track numbers in ascending or descending order, read the image data associated with each track from the media, and display it sequentially every time a predetermined time elapses, so that the time when nothing is displayed on the display screen To display a variety of image data without continuing for a long time.

(5) When there is no image data representing the medium, a predetermined plurality of images associated with the tracks are sequentially arranged from the image data associated with the smallest track number or the largest track number. An object of the present invention is to read out data from a medium and display the image on a screen divided by a screen, so that a variety of image data can be displayed without a long time in which nothing is displayed on the display screen.

(6) If there is no image data representing the medium and no image data associated with the track, the image or character prepared in the audio / image reproducing apparatus is copied. An object of the present invention is to display various image data without displaying a display screen for a long time without displaying anything.

(7) When reproducing the audio data, when the display timing information of the image data associated with the track of the audio data does not exist in the information on the image data of the TOC, the audio data is associated with the track. When the number of image data items associated with the track is one, the image data is displayed during a period from the start of reproduction of the audio track to immediately before the start of reproduction of the next audio track, When a plurality (n) of image data associated with a track exists, the reproduction time length (t) is calculated by referring to the reproduction time length (t) information of the audio track or based on information equivalent to the reproduction time length. , About t /
It is an object of the present invention to display various image data by displaying the plurality of image data sequentially every n hours, even if a user does not perform an operation of instructing display one by one. .

In the above conventional example, since the image data must be read from the disk after the power is turned on or the medium (mini-disc) is inserted, the user can immediately reproduce the image after inserting the medium (mini-disc). There is a problem that the user has to wait for a long time when he wants to start, giving a sense of incongruity to the user. Conversely, if necessary,
If image data is read, it is necessary to access another area of the disk on which the image data is recorded before reading the audio data, which causes a problem that the reproduction of music is delayed.

The present invention solves the above-mentioned conventional problems. When the power is turned on or when a medium (mini-disc) is inserted, the TOC is immediately read from the medium (mini-disc), and the contents of the information relating to the image data of the TOC are read. Based on this, the image data on the disk is stored in the image data memory, and after the image data has been stored in the memory, when the user instructs to reproduce, the audio data is immediately read into the audio data memory, and the image data is stored in the image data memory. And read out the image data from the CPU and quickly perform the display related to the track and the pronunciation of the sound.

After the power is turned on or after the medium (mini-disc) is inserted, and before the reading of the image data is completed, when the user instructs the reproduction, the image data corresponding to the head of the desired track is already recorded. Check if the data is stored in the data memory. If the data is stored, stop reading the current image data from the disk, display the image data and play back the music, and respond to the beginning of the desired track. When the image data to be read is not stored, the image data on the disk is immediately read.

Thus, in most cases, an object of the present invention is to provide a sound / image reproducing apparatus which is excellent in operability without delaying both display of image data and reproduction of music.

[0056]

In order to achieve this object, a sound / image reproducing apparatus according to the present invention comprises a reading means for reading audio data, image data or TOC data from a medium, and storing the read data. A memory, signal processing means for decoding the read data, medium detection means for detecting insertion of the medium, power supply detection means for detecting power-on,
An operation input unit for instructing a user to perform an operation; and a system control unit, wherein the system control unit detects after power-on is detected by the power supply detection unit or after media insertion is detected by the media detection unit. During a period until an operation for reproducing audio data is issued from the operation input unit, the TOC recorded on the medium is transmitted to the reading unit.
Is read out and stored in the memory, and by referring to the information on the TOC image data stored in the memory, if there is one image data representative of the medium, the image data representative of the medium is stored in the medium. From the media, when there is a plurality of image data representing the medium, read a plurality of image data representing the medium from the medium,
The display is instructed to be sequentially displayed every time a predetermined time elapses.

In the audio / video reproducing apparatus according to the present invention, the system control means may include an operation input means after the power supply detection means detects power-on, or after the media detection means detects the insertion of a medium. During the period from when the audio data reproduction instruction is issued, the reading means is instructed to read out the TOC recorded on the medium and store it in the memory, and the image data of the TOC stored in the memory is read out. With reference to the information, when there is one piece of image data representing the medium, an instruction is given to read and display the image data representing the medium from the medium. A plurality of image data representative of the medium is read out from the medium, and an image display image is displayed. It is obtained by the configuration in which an instruction to split screen displayed.

In the audio / video reproducing apparatus according to the present invention, the system control means may be configured to output audio data from the operation input means after the power supply detection means detects that the power is turned on or after the medium detection means detects the insertion of the medium. During a period until a data reproduction instruction is issued, the reading unit is instructed to read out the TOC recorded on the medium and store it in the memory, and the information on the TOC image data stored in the memory is read out. For reference, when image data representing a medium does not exist, the audio / image reproducing apparatus is instructed to display a prepared image or a prepared character.

Further, in the audio / video reproducing apparatus according to the present invention, the system control means may control the audio input from the operation input means after the power supply detecting means detects the power-on or the medium detecting means detects the insertion of the medium. During a period until a data reproduction instruction is issued, the reading unit is instructed to read out the TOC recorded on the medium and store it in the memory, and the information on the TOC image data stored in the memory is read out. By reference, when there is no image data representing the medium, the image data associated with the smallest track number or the largest track number is read out from the medium and displayed, and thereafter, the track numbers are updated in ascending or descending order. The image data associated with each track Reading al, in which a configuration that instructs sequentially displayed each time the predetermined time elapses.

Further, in the audio / video reproducing apparatus according to the present invention, the system control means may control the audio input from the operation input means after the power supply detection means detects the power-on or the media detection means detects the insertion of the medium. During a period until a data reproduction instruction is issued, the reading unit is instructed to read out the TOC recorded on the medium and store it in the memory, and the information on the TOC image data stored in the memory is read out. For reference, when there is no image data representative of the medium, a plurality of predetermined image data associated with the tracks are sequentially transferred from the medium, starting from the image data associated with the smallest track number or the largest track number. Read out and instruct the image display screen to split screen display One in which the.

In the audio / video reproducing apparatus according to the present invention, the system control means may be configured to output audio data from the operation input means after the power supply detection means detects that the power is turned on or after the medium detection means detects the insertion of the medium. During a period until a data reproduction instruction is issued, the reading unit is instructed to read out the TOC recorded on the medium and store it in the memory, and the information on the TOC image data stored in the memory is read out. When there is no image data representing the media and no image data associated with the track, an instruction to display an image or a character prepared in advance on the audio / image reproducing apparatus is provided. The configuration is as follows.

In the audio / video reproducing apparatus according to the present invention, the system control means may be configured to output audio data from the operation input means after the power supply detection means detects the power-on or after the medium detection means detects the insertion of the medium. During the period until the data reproduction instruction is issued, the reading means is instructed to read out the TOC recorded on the medium and stored in the memory, and the operation input means issues the audio data reproduction instruction. In the case where the image data associated with the track to be reproduced is displayed in accordance with the display timing information with reference to the information regarding the image data of the TOC stored in the memory,
When the display timing information does not exist in the information on the image data of the TOC, the number of image data associated with the track is checked. Instructing the image data to be displayed until immediately before the start of reproduction of the next audio track to be reproduced, and a plurality (n) of image data associated with the track is displayed.
When the audio track exists, the playback time information (program time = t) of the audio track is referred to, and approximately t /
Each time n time elapses, an instruction is given to sequentially display the plurality of image data.

According to the present invention, (1) With the above-described configuration, the TOC recorded on the medium is not changed after the power is turned on or after the medium is inserted until the audio data reproduction instruction is issued. When there is one piece of image data representing the medium, the image data representing the medium is read out from the medium and displayed when there is one piece of image data representing the medium. A plurality of image data representing the medium is read from the medium, and is operated so as to be sequentially displayed every time a predetermined time elapses. Even if the user does not perform the operation of instructing the display one by one, various types of data can be obtained. Image data can be displayed.

(2) With the above configuration, the TOC recorded on the medium is read out and the image data is read during the period from when the power is turned on or after the medium is inserted to when the audio data reproduction instruction is issued. With reference to the information about the media, when there is one piece of image data representative of the medium, the image data representing the medium is read out from the medium and displayed. Read a plurality of image data representative of the medium from the medium, operate to display the image on a divided screen on the image display screen, and perform various image data displays even if the user does not perform an operation of instructing the display one by one. It can be carried out.

(3) With the above configuration, the TOC recorded on the medium is read out and read from the image data during the period from when the power is turned on or after the medium is inserted until the audio data reproduction instruction is issued. With reference to the information about the media, when there is no image data representing the media, the audio / image reproducing apparatus operates to display an image or characters prepared in advance, and a time period during which nothing is displayed on the display screen. , And a variety of image data can be displayed.

(4) With the above-described configuration, the TOC recorded on the medium is read out and read out of the image data during a period from when the power is turned on or after the medium is inserted to when an audio data reproduction instruction is issued. When there is no image data representative of the medium, the image data associated with the smallest track number or the largest track number is read out from the medium and displayed, and the track numbers are thereafter set in ascending or descending order. Update, read the image data associated with each track from the media, operates to sequentially display each time a predetermined time has elapsed, without long lasting time nothing is displayed on the display screen, Various image data can be displayed.

(5) In addition, since the above configuration is adopted, the TOC recorded on the medium is read out and the image data is read during the period after the power is turned on or the medium is inserted and the audio data reproduction instruction is issued. When there is no image data representative of the media with reference to the information related to the medium, a predetermined plurality of image data associated with the tracks are sequentially arranged from the image data associated with the smallest track number or the largest track number. Is read from the medium and displayed on the image display screen in a divided manner, so that a variety of image data can be displayed without a long time in which nothing is displayed on the display screen.

(6) With the above-described configuration, the TOC recorded on the medium is read out and read from the image data during a period from when the power is turned on or after the medium is inserted until the audio data reproduction instruction is issued. When the image data representing the media does not exist and the image data associated with the track does not exist, the image or the character prepared in advance in the audio / image reproducing device is displayed by referring to the information related to the media. Work to
The screen will stay blank for a long time,
Various image data can be displayed.

(7) With the above-described configuration, the TOC recorded on the medium is read out after the power is turned on or after the medium is inserted until the audio data reproduction instruction is issued after the power is turned on or the medium is inserted. When the data reproduction instruction is issued, the image data associated with the track to be reproduced is displayed in accordance with the display timing information with reference to the information regarding the TOC image data, and the display timing information is included in the information regarding the TOC image data. When there is no image data associated with the track, the number of image data associated with the track is checked. When the number of image data associated with the track is one, the reproduction from the start of reproduction of the audio track to immediately before the start of reproduction of the next audio track is performed. Display the image data during the period, and display the image data associated with the track. When there are a plurality of (n) data, the reproduction time length (t) is calculated by referring to the reproduction time length (t) information of the audio track or based on the information equivalent to the reproduction time length, to obtain approximately t / n time. Operates to sequentially display the plurality of image data,
Even if the user does not perform the operation of instructing the display one by one, various image data can be displayed.

Further, according to the above configuration, when the power is turned on or the medium is inserted, the TOC is read, and then the image data on the disk is stored in the image data memory based on the information regarding the TOC image data. After the storage is completed, when the user instructs playback,
Immediately store the audio data in the audio data memory, read the image data from the image data memory, quickly display the image data, and play back the music. After turning on the power or inserting a medium (mini disk), If the user instructs playback before completing the storage in the memory, if the image data corresponding to the beginning of the desired track has already been loaded into the image data memory, the image data is read from the disk. Pause, display image data and play music,
When the image data corresponding to the head of the desired track has not been captured, the image data on the disc is immediately read, and in most cases, neither the display of the image data nor the reproduction of the music is delayed. A music / image reproducing device with excellent operability can be provided.

[0071]

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

(Embodiment) FIG. 1 is a block diagram showing a basic configuration of an audio / video reproducing apparatus according to an embodiment of the present invention. In FIG. 1, reference numeral 20 denotes a medium on which audio data, image data, TOC data and the like are recorded, such as a magnetic disk and an optical disk. 2
1 is a reading means for reading data from the medium 20, and 22 is a memory for storing the read data. The audio data memory 22A, the TOC memory 22
B, a still image data TOC memory 22C, and a still image data memory (1) 22D. Reference numeral 23 denotes a still image data memory (2) for storing images or characters prepared in advance. Reference numeral 24 denotes a signal processing unit for decoding the read data, and controls the operation of the still image data memory (1) 22D, the still image data memory (2) 23, the DAC 29, the image display unit 30, and the like under the control of the system control unit 28. Do. Reference numeral 25 denotes a medium detection unit that detects insertion of the medium 20, and can be realized by, for example, a combination of an LED and a photodiode. 26 is a power supply detecting means for detecting power-on, 27 is an operation input means for instructing a user to perform an operation, and 28 is a system control means, which is constituted by, for example, a microprocessor. Then, the media detecting unit 25, the power detecting unit 26, and the operation input unit 27
The control of the reading means 21, the signal processing means 24, and the like is performed based on the input from the CPU and the data from the reading means 21 and the signal processing means 24. Reference numeral 29 denotes a digital / analog converter (DAC) which converts a digital audio signal from the signal processing means into an analog audio signal output V. An image display means 30 converts an image from the signal processing means 24 into a video signal output A.

FIG. 2 is a block diagram showing a configuration in which the present embodiment is applied to a mini-disc reproducing apparatus based on the basic configuration shown in FIG. In FIG. 2, the same reference numerals are given to the same functional blocks as those in FIG. 1 and the above-described conventional mini-disc reproducing apparatus (FIG. 11), and description thereof will be omitted. Here, a selector (SEL) 31 switches between the still image data memory (1) 17 and the still image data memory (2) 23 under the control of the system control unit 13. This is to select an image or a character prepared in the still image data memory (2) 23 by the system control unit 13 when image data representing a medium does not exist in the still image data memory (1) 17. is there.

FIG. 3 is a flowchart showing a first operation of the system control unit 13 in FIG. In FIG. 3, the same processes as those in the flowchart of the conventional example (FIG. 12) are denoted by the same process numbers. What is different is the processes S14 to S23.

In step S1, the system control unit 13 monitors the disk detection signal from the disk detection unit 18 and branches to step S2 when the state changes from the state with the disk to the state without the disk. Indicates the processing to be performed.

The process S2 controls the servo unit 6, the signal demodulation unit 8 and the memory control unit 10 to read TOC data and still image TOC data from the disk,
The processing to be stored in the memory 15 and the still image TOC memory 16 is shown. The above is the same as the conventional example.

Next, in step S14, 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 S15. If there is no reproduction instruction, the processing proceeds to step S3. Is shown.

In the process S3, the servo unit 6, the signal demodulation unit 8 and the memory control unit 10 are controlled based on the contents of the still image TOC memory 16 so that the still image data is transferred from the disk 1 to the still image data memory ( 1) The processing to be read is shown at 17.

In the process S15, based on the contents of the still picture TOC memory 16 and the still picture data memory (1) 17, the still picture data at the head of the track designated to be reproduced is already stored in the still picture data memory (1) 17. It is checked whether or not the data has been captured. If the data has already been captured, the process S17 is executed, and if not, the process S14 is executed. The determination as to whether the still image data at the beginning of the track has already been taken into the still image data memory (1) 17 is based on the still image stored in the still image TOC memory 16 corresponding to the track number of the track currently being reproduced. It is determined whether or not still image data in which the offset address OFS of the track number TNO of the image TOC is 0 to 31 (corresponding to 0 to about 2 seconds from the beginning of the track) is stored in the still image data memory (1) 17. Do it.

In step S16, based on the contents of the still picture TOC memory 16 and the still picture data memory (1) 17, all 20 still picture data are stored in the still picture data memory (1) 17
It is checked whether or not the data has been captured. If the data has been captured, the process branches to step S17.
4 shows the processing for executing the processing.

Processing S17 is performed when the memory full flag MF output from the memory control unit 10 becomes 1, that is, when the audio data memory 9 becomes full.
7, the process branches to step S18 otherwise.

The process S7 controls the audio decompression unit 11 to
A process of reading out audio data from the audio data memory 9, performing decompression processing, and starting transmission of audio data to the DAC 12 will be described.

The process S8 controls the servo unit 6, the signal demodulation unit 8, and the memory control unit 10 to stop reading audio data from the disk 1.

In step S18, 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 to transfer the still picture data from the disk 1 to the still picture data memory ( 1) 17 shows a process of stopping reading.

In step S9, 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 data is stored in the audio data memory 9 and the reading of the audio data is not started, the processing for continuing the reading processing of the audio data is shown.

In step S19, based on the contents of the still picture TOC memory 16 and the still picture data memory (1) 17, all 20 still picture data are stored in the still picture data memory (1) 17
It is checked whether or not the data has been captured. If the data has been captured, the process branches to step S10. If not, the process proceeds to step S2.
0 indicates a process for executing the process.

In step S20, the servo unit 6, the signal demodulation unit 8 and the memory control unit 10 are controlled based on the contents of the still image TOC memory 16 to transfer the still image data from the disk 1 to the still image data memory ( 1) 17 shows a process of starting reading. At this time, with reference to the offset address OFS of the still image TOC stored in the still image TOC memory 16, the still image data having the smaller offset address is read out in order and stored in the still image data memory (1) 17.

In step S10, it is determined whether or not there is a still image to be displayed at the currently sounding position based on the offset address OFS of the still image TOC data taken into the still image TOC memory 16. If there is a still image to be processed, the process branches to step S21; otherwise, the process branches to step S22.

The process S21 checks whether or not the still image to be displayed specified in the process S10 is stored in the still image data memory (1) 17, and if so, the process proceeds to the step S21.
The process branches to step S11, otherwise to step S22.

Processing S11 is a still image data memory (1) 1
7 shows a process of reading out still image data from the device 7, transferring the data to the still image display unit 19, and updating the still image.

The process S22 is a process for checking whether or not an instruction to stop reproduction has been issued from the operation input unit 14, and branching to the process S13 when there is an instruction to stop reproduction, and branching to the process S23 otherwise.

The process S23 determines whether or not the track that emits the sound changes to a new track. If the track has changed to a new track, the process branches to a process S15, and if not, the process branches to a process S17. Show.

The process S13 controls the audio decompression unit 11 to stop reading the audio data from the audio data memory 9 and stop sending the audio data to the DAC 12.

Next, the capture and display of still image data by the system control unit 13 and the control of the audio data memory 9 will be described in more detail (corresponding to the processing S14 to S22 in the flowchart of FIG. 3).

FIG. 13 is a timing chart showing the operation of taking audio data into the audio data memory 9 and the operation of taking still image data on the disk into the still image data memory (1) 17 according to the embodiment of the present invention. . MS, MF, ME, TRON, DEMAE
N and SPMWEN are described in FIG.
And the description is omitted.

DSIWE indicates a process of taking still picture data on the disk into the still picture data memory (1) 17. When DSIWE = 1, it indicates that still image data capturing processing is being executed.

When the reading of the TOC and the still image TOC data is completed in step S2, the system control unit 13 accesses the still image data on the disk in step S3 if there is no instruction for reproduction from the operation input unit 14, and the time is read. From L, the capture of still image data into the still image data memory (1) 17 is started.

When the system control unit 13 receives a reproduction instruction from the operation input unit 14 at time A, in step S15, the still image data to be displayed at the head of the track for which reproduction has already been instructed is stored in the still image data memory (1). 17, the process branches to step S17, and in this step S17, the audio data memory full flag MF is checked.
Is confirmed, that is, the audio data memory 9 is not full, the process branches to step S18, and the reading end process of the still image data in step S18 is executed at time M.

Next, the system control unit 13 confirms in step S19 that reading of still image data has been completed, and in step S10 confirms the presence or absence of a still image to be displayed.
Confirm that the still image data corresponding to the beginning of the track is stored in the still image data memory (1) 17 by
In step S11, a still image is displayed.

Next, the system control unit 13 executes the processing S1 again.
At 7, the audio data memory full flag MF is checked, and it is confirmed that it is set to 1, that is, the audio data stored in the audio data memory 22A is full. Of the still image data into the still image data memory (1) 17 is started.

At time C, the system control unit 13 determines in step S17 that the audio data memory full flag MF
Is confirmed to be 0, that is, the audio data stored in the audio data memory 9 is (full-
M) After confirming that it is below, the process branches to step S18, and at time M, the process of ending the reading of the still image data in step S18 is executed.

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 S19 that all the 20 still image data have been stored in the still image data memory (1) 17, the process skips step S20 and thereafter, Does not import image data.

According to the above-described processing, if the reproduction instruction is issued before all the 20 still image data are stored in the still image data memory (1) 17, the remaining data is replaced with the audio data. It can be executed using the free time of capturing.

In the above description, the case where the reading of the 20 still image data is not completed by time A is described. However, if the timing of the reproduction instruction from the operation input unit 14 is late, it is the time of time A. In addition, the reading of the 20 still image data has been completed, and it is not necessary to go to the reading of the still image data using the idle time of the audio data capture.

By performing the above-described processing, the system control unit 13 reads the TOC data and the still picture TOC data when a medium (mini disc) is inserted, and then, based on the contents of the still picture TOC data, Immediately read the still image data on the disk, and after reading is complete,
When the user instructs to play, the audio data of the specified track is immediately read without reading the still image data on the disk, and the display of the still image and the sound of the sound are promptly performed. After inserting the (mini disc) and before completing the reading of the still image data,
When the user instructs playback, if the still image data corresponding to the beginning of the desired track has already been loaded into the still image data memory, the reading of the still image data from the disk is interrupted, and the still image display is performed. When the still image data corresponding to the beginning of the desired track has not been captured, the apparatus immediately reads the still image data on the disk, and in most cases, displays and displays the still image. It is possible to provide a sound / image reproducing apparatus which is excellent in operability without delaying both of sound pronunciation.

In step S15, if the still image data at the beginning of the track is not in the still image data memory (1) 17, the system control unit 13 takes in the still image and then reads the audio data. , Processing S2
In No. 1, when there is no still image data to be displayed, the display data is not updated. Therefore, the data is displayed at the head of the track. While reading, still images that should be displayed in the middle of a track are skipped when the still image data is not loaded, and basically priority is given to making audio data sound faster, Only the first still image on the track is captured and displayed.

Now, with respect to such an example of the mini disk according to the embodiment of the present invention, a plurality of image data can be efficiently stored in the still image data memory.

Next, a description will be given of a case where various image data can be displayed by using the image data stored in these memories.

FIG. 4 shows the system control means 28 of FIG. 1 or the system control unit 13 of FIG. 2 according to an embodiment of the present invention.
5 is a flowchart showing a second operation of the first embodiment.

Step S24 indicates the start of the initial image data display processing. That is, this is a start step of a process of displaying image data immediately after the power is turned on to the apparatus or immediately after a medium is inserted into the apparatus.

In step S25, it is determined whether the power has just been turned on or a medium has been inserted. If the power has just been turned on or the medium has been inserted, the flow branches to step S26. If not, the flow branches to step S32. Show.

The process S26 shows a process of reading the TOC data from the medium.

The process S27 is executed by the T read in the process S26.
With reference to the OC data, it is determined whether or not image data representing the medium exists. If image data representing the medium exists, the process branches to step S28; otherwise, the process branches to step S31. Indicates processing.

In the step S28, when the image data representing the medium confirmed in the step S27 is not stored in the memory, reading of the image data is started with reference to the TOC data, and the medium is represented. When the image data to be stored is stored in the memory, if there is image data other than the image data representing the medium and not stored in the memory, the image data is referred to the TOC data. This is the process of starting reading.

In step S29, it is determined whether or not the image data representing the medium confirmed in step S27 is stored in the memory. If the image data is stored in the memory, the process branches to step S30 to store the image data in the memory. If not, the process of executing the process S29 again is shown.

The process S30 is a process for displaying image data representing a medium.

The processing step S31 is a processing step for displaying image data or characters prepared in advance in the reproducing apparatus when there is no image data representing the medium.

The process S32 indicates that the initial image data display process ends and the process returns to the normal reproduction process routine. Here, regarding the image data representing the media,
A brief description will be given.

In the case of a medium in which music data and image data related to the music data are recorded, for example, in the case of a karaoke CD (compact disc), in addition to music data, an image representing a CD is recorded. Each song includes a plurality of still image data, and lyrics (character data) of each recorded song.

The image representative of a CD is, for example, a picture of a CD jacket (cover) called a cover picture,
Also, if the recorded song is a song of a specific singer,
A photograph of the singer or the like is assumed. Among the image data recorded on the medium, information indicating which image is the image data representing the medium is registered in the TOC data (or the still image TOC data).

Next, the image data associated with the track will be described.

Taking the karaoke CD as an example, it may be determined in advance which of the recorded images corresponds to which music track (song). In this case, When playing back a music track (song), it is desirable to sequentially display image data associated with the music track (song).

On the other hand, with respect to the lyrics (character data) of each recorded song, it is meaningless unless the character data associated with the music track is displayed sequentially when the music track (song) is reproduced. Absent.

As with image data representing a medium, information indicating which music track (song) is associated with which image data is registered in the TOC data (or the still image TOC data).

In the embodiment of the present invention, according to the flowchart shown in FIG. 4, immediately after the power is turned on or after the medium is inserted, it is confirmed whether or not image data representing the medium exists. Image data representing the media is displayed, and if not present, ROM (read only memory) mounted on the playback device
RO that is mounted on a playback device that displays image data written in advance on a flash memory or the like, for example, a brand mark image of a manufacturer, a painting, a photograph, or the like.
M (read only memory), flash memory, etc., display character data prepared in advance, such as characters indicating the brand of the manufacturer or a message such as "No cover picture". When there is no image data representative of in the medium, a variety of displays can be performed without a situation where nothing is displayed.

FIGS. 5 and 6 are flow charts showing the third operation of the system control means 28 of FIG. 1 or the system control unit 13 of FIG. 2, which is an embodiment of the present invention.
Here,,, in FIGS. 5 and 6 are connected lines in the flowchart.

The process S33 indicates the start of the initial image data display process. That is, this is a start step of a process of displaying image data immediately after the power is turned on to the apparatus or immediately after a medium is inserted into the apparatus.

In step S34, it is determined whether the power has just been turned on or the medium has been inserted. If the power has just been turned on or the medium has been inserted, the flow branches to step S35. If not, the flow branches to step S56. Is shown.

Step S35 shows a process of reading the TOC data from the medium.

The process S36 is the same as the T read in the process S35.
Referring to the OC data, it is determined whether there is one or more image data. If there is one or more, the process branches to step S37, and if not, the process branches to step S55.

In step S37, if the image data confirmed in step S36 is not stored in the memory, the T
This is a process of starting reading image data while referring to the OC data.

The process S38 is executed by the TO read in the process S35.
With reference to the C data, it is determined whether there is image data representing the medium. If image data representing the medium exists, the process branches to step S39; otherwise, the process branches to step S43. Indicates processing.

In the step S39, it is determined whether or not the image data representing the medium confirmed in the step S38 is stored in the memory. If the image data is stored in the memory, the process branches to the step S40 to store the image data in the memory. If not, the process of executing the process S39 again is shown.

The process S40 is a process for displaying image data representing a medium.

In step S41, it is determined whether or not an instruction to reproduce audio data has been issued. If a reproduction instruction has been issued, the flow branches to step S56. If no reproduction instruction has been issued, the flow branches to step S42. Indicates processing.

In step S42, after displaying the image data in step S40, it is determined whether a predetermined time has elapsed. If the predetermined time has elapsed, the process proceeds to step S4.
The process branches to step S3, and if not, the process branches to step S41.

[0138] The processing S43 is based on the T read in the processing S35.
With reference to the OC data, it is determined whether or not the image data associated with the track exists. If the image data exists, the process branches to step S44, and if not, the process proceeds to step S56.
Shows the process of branching to.

The process S44 is a process in which the largest track number (Nma) in the image data associated with the track is obtained.
It is determined whether the image data associated with x) is stored in the memory. If the image data is stored, the process branches to step S45. If not, the process proceeds to step S4.
4 shows the process of executing again. Here, Nmax indicates the largest track number among the tracks having the associated image data. For example, ten music tracks are recorded, and music tracks having associated image data are track numbers 1, 2, 3, 5,
If it is 6,7,8, Nmax is 8.

In the step S45, the largest track number (Nma) in the image data associated with the track
This is a process for displaying the image data associated with x).

The process S46 shows a process of substituting 1 for the variable P.

In step S47, it is determined whether or not an instruction to reproduce audio data has been issued. If a reproduction instruction has been issued, the flow branches to step S56. If no reproduction instruction has been issued, the flow branches to step S48. Indicates processing.

In step S48, after displaying the image data in step S45, it is determined whether a predetermined time has elapsed. If the predetermined time has elapsed, the process proceeds to step S4.
9, the process branches to step S47 if the time has not elapsed.

In the step S49, the value of the variable P is set to Nmax + 1.
It is determined whether P is equal to Nmax + 1. If P = Nmax + 1, the process branches to step S56, and if P ≠ Nmax + 1, the process branches to process S50.

In step S50, when the track number is (Nmax)
-P) It is determined whether or not the image data associated with the track No. exists, and if so, the process proceeds to step S5.
Branching to 1; if not present, branching to step S54, incrementing the value of variable P by 1 (+1 to variable P)
Then, by executing the processing S49 and the processing S50 again, an operation is performed to search for image data to be displayed next. Here, this loop (a series of processes) is repeated, and when the value of the variable P becomes Nmax + 1, the process branches to step S56 to terminate the initial image data display process.

In the step S51, it is determined whether or not the image data associated with the track having the track number (Nmax-P) confirmed in the step S50 is stored in the memory. If there is, the process branches to step S52, and if not stored in the memory, the process of executing step S51 again is shown.

In step S52, when the track number is (Nmax
This is a process of displaying image data associated with the (P) th track.

Step S53 is a step of incrementing the value of the variable P by one (+1 to the variable P).

Processing S55 is a processing step of displaying image data or characters prepared in advance in the reproducing apparatus when no image data exists.

FIGS. 7 and 8 are flowcharts showing the fourth operation of the system control means 28 of FIG. 1 or the system control unit 13 of FIG. 2 according to the embodiment of the present invention. Here,,, in FIGS. 7 and 8 are connected lines in the flowchart.

The processing shown in FIGS. 5 and 6 is different from the processing shown in FIGS. 5 and 6 in the case where image data associated with a track exists. And the highest track number (N
max) is displayed first, and thereafter, every time a certain period of time elapses, the track numbers are updated in descending order, and the image data associated with each track is displayed. 7 and 8, the image data associated with the smallest track number (Nmin) is first displayed among the image data associated with the tracks as shown in processes S68, S69, S74, and S76. Thereafter, each time a certain time elapses, the track numbers are updated in ascending order, and the image data associated with each track is displayed.

According to the present invention, according to the flowchart shown in FIG. 5, FIG. 6 or FIG. 7, FIG. 8, immediately after the power is turned on or after the medium is inserted, it is confirmed whether or not image data representing the medium exists. If you do
The image data representing the media is displayed, and if it does not exist, it is displayed in the following procedure.

(1) When image data associated with a track exists, the image data associated with the largest track number (Nmax) or the smallest track number (Nmin) among the image data associated with the track Is displayed, and thereafter, every time a predetermined time elapses, the track numbers are updated in descending order or ascending order, and the image data associated with each track is displayed.

(2) If there is no image data associated with the track, the ROM
(Read only memory) or ROM (read only memory) mounted on a playback device that displays or reproduces image data previously written in a flash memory or the like, for example, a brand mark image of a manufacturer, a painting, a photograph, or the like. ) Or a flash memory or the like, character data prepared in advance, for example, characters indicating the brand of the manufacturer, a message such as “no cover picture” is displayed.

As described above, according to the embodiment of the present invention, even when the image data representing the medium does not exist in the medium, the image data associated with the track or the image data or characters prepared in advance in the reproducing apparatus can be read. Since the display can be performed, a variety of displays can be performed without a situation in which nothing is displayed.

When image data representing a medium is present, image data representing a medium is displayed one after another without displaying the image data representing the medium for a long time. It is possible to enjoy a proper display.

FIGS. 9 and 10 are flowcharts showing the fifth operation of the system control means 28 of FIG. 1 or the system control unit 13 of FIG. 2 according to the embodiment of the present invention. Here, "", "", "", "in FIG. 9 and FIG.
"" Is a connected line in the flowchart.

The process S81 indicates the start of the image data display process at the time of sound reproduction. In other words, this is a start step of the image data display process performed in parallel with the reproduction of the audio when the reproduction device is in the reproduction state instead of the stop state.

In step S82, it is determined whether or not image data associated with the audio track currently being reproduced exists. If so, the flow branches to step S83. If not, the flow branches to step S88. Show.

In step S83, it is determined whether or not there are two or more image data items associated with the currently reproduced audio track. If there are two or more image data items, the process branches to step S96. If there is only one image data item associated with the currently reproduced audio track, the process branches to step S84.

In step S84, it is determined whether the only image data associated with the currently reproduced audio track is already stored in the memory. If the only image data is stored in the memory, the process proceeds to step S85. If the process branches and the data is not stored in the memory, the process S84 is executed again, that is, a process of determining whether the accumulation of the image data in the memory is completed.

The process S85 is a process for displaying only one image data associated with the currently reproduced audio track.

In step S86, it is determined whether or not the audio track to be reproduced has changed.
The process branches to step 82, and if not changed, to step S87. For example, if the music of the fifth music is played when the processing shown in the processing S81 and the processing S82 is executed, and if the music of the sixth music is played when the processing S86 is executed, the process branches to the processing S82. Main processing S86
If the fifth piece of music is being reproduced also at the time of executing, the process branches to step S87.

A step S87 decides whether or not the reproduction of the sound has been completed.
The process branches to step S16 and branches to step S86 if not completed. For example, when executing the process S87, if the user has already pressed the playback stop button or the like and the instruction to stop the voice playback has been issued, the process S87 is performed.
The process branches to 116, and if not, that is, if audio reproduction is continuing, the process branches to S86.

The process S116 indicates the end of the image data display process when the sound is being reproduced.

The process S88 is a process in the case where there is no image data associated with the audio track currently being reproduced. In step S88, it is determined whether or not image data representing a medium exists. The process branches to step S89, and if not, branches to step S93. Here, the image data representing the medium will be briefly described. For example, like a video CD, in addition to music data, an image representative of a video CD and each recorded song include a plurality of still image data and lyrics (character data) of each recorded song. May be.

An image representing a video CD (image data representing a medium) is, for example, a picture of a jacket (cover) of a video CD called a cover picture,
When the recorded music is a music of a specific singer, a photograph of the singer or the like is assumed. Among the image data recorded on the medium, information indicating which image is the image data representing the medium is registered in the TOC data (or the still image TOC data).

On the other hand, the image data associated with the track is, in the case of the above-mentioned video CD, as an example, it is determined in advance which of the recorded images corresponds to which music track (song). In such a case, when a certain music track (song) is reproduced, it is desirable to sequentially display image data associated with the music track (song).

On the other hand, with respect to the lyrics (character data) of each recorded song, it is meaningless if the character data associated with the music track is not sequentially displayed when the music track (song) is reproduced. Absent.

As with the image data representing the media, information indicating which music track (song) is associated with which image data is registered in the TOC data (or the still image TOC data).

In step S89, it is determined whether or not the image data representing the medium has already been stored in the memory. If the image data has been stored in the memory, the process proceeds to step S90.
To step S8, and if the data is not stored in the memory, the process proceeds to step S8.
9 is executed again, that is, a process of determining whether the accumulation of the image data in the memory is completed.

The process S90 is a process for displaying image data representing a medium.

At step S91, it is determined whether or not the audio track to be reproduced has changed.
The process branches to step S82 and branches to step S92 if it has not changed. For example, if the third music is being reproduced when the processing shown in the processing S81 and the processing S82 is executed, and if the seventh music is being reproduced when the processing S91 is executed, the flow branches to the processing S82. Main processing S91
If the third music is being reproduced also at the time of executing, the process branches to step S92.

In the step S92, it is determined whether or not the reproduction of the sound has been completed.
The process branches to 116, and if not completed, the process branches to step S91. For example, when the process S92 is executed, if the user has already pressed the playback stop button or the like and the instruction to stop the audio playback has been issued, the process S92 is performed.
The process branches to step S116. If not, that is, if audio reproduction is continued, the process branches to step S91.

In step S93, if there is no image data associated with the audio track being reproduced and there is no image data representing a medium, image data or characters prepared in advance in the reproduction apparatus are displayed. This is a processing step. Here, the display of image data or character data prepared in advance in the playback device refers to image data previously written in a ROM (read only memory) or flash memory mounted in the playback device,
For example, manufacturer's brand mark, product standard,
Displays images and logos indicating product names, paintings and photographs, or ROM mounted on a playback device
(Read-only memory), flash memory, etc., prepared character data such as characters indicating the manufacturer's brand, product standard, product name, etc., and "Image data is not recorded. The message is displayed.

In the step S94, it is determined whether or not the audio track to be reproduced has changed.
The process branches to step 82, and if not changed, to step S95. For example, when the processing shown in the processing S81 and the processing S82 is executed, the music of the first music is reproduced, and when the music of the second music is reproduced at the time of executing the processing S94, the process branches to the processing S82. Main processing S94
If the music of the first music is being reproduced also at the time of executing, the process branches to step S95.

In the step S95, it is determined whether or not the reproduction of the sound has been completed.
The process branches to step S16 and branches to step S94 if not completed. For example, when executing the process S95, if the user has already pressed the playback stop button or the like to issue an instruction to stop the sound playback, the process S95 is executed.
The flow branches to 116, and if not, that is, if audio reproduction is continuing, the flow branches to S94.

In the step S96, it is determined whether or not the first image data associated with the currently reproduced audio track has already been stored in the memory. , And the process of executing step S96 again when the image data is not stored in the memory, that is, a process of determining whether or not the accumulation of the image data in the memory is completed.

The process S97 shows a process of substituting 1 for a variable P.

The process S98 is a process for displaying the P-th (= 1) image data associated with the currently reproduced audio track.

In step S99, it is determined whether or not there is timing information for displaying image data associated with the audio track. If timing information exists, the process branches to step S108. If not, the process proceeds to step S100. This shows a branching process.

Processing S100, S101, S102, S1
03, S104, S105, S106, and S107, the processing flow is such that there are two or more image data associated with the currently reproduced audio track, and two or more image data associated with the currently reproduced audio track. This is a processing flow in a case where display timing information for instructing at which timing (at what time) image data is to be displayed does not exist on the medium (is not recorded).

The process S100 shows a process of reading the number n of image data associated with the currently reproduced audio track and the reproduction time information t of the currently reproduced audio track. Here, an example of the number of image data and the reproduction time information of the audio track will be briefly described. For example, assume that the currently reproduced audio track is the first music piece. If ten images associated with the currently reproduced audio track 1 are recorded, the number n of image data is 10, and the first audio track is music of 3 minutes and 20 seconds. For example, the playback time information t of the audio track
Is 3 minutes and 20 seconds.

In step S101, it is determined whether or not the audio track to be reproduced has changed. If the audio track has changed, the process branches to step S82.
Shows the process of branching to. For example, processing S81, processing S8
When the process indicated by No. 2 is executed, the music of the seventh tune is reproduced, and when the music of the eighth tune is reproduced at the time of executing the present process S101, the process branches to the process S82, and the present process S
If the seventh piece of music is being reproduced even when the step 101 is executed, the process branches to step S102.

In the step S102, it is determined whether or not the reproduction of the sound has been completed.
The process branches to 116, and if not finished, processing S103
Shows the process of branching to. For example, when executing the process S102, if the user has already instructed to stop the audio reproduction by pressing the reproduction stop button or the like, the process branches to the process S116. If the process is continued, the process branches to step S103.

In step S103, it is determined whether or not the time t / n has elapsed since the image data was displayed in step S98. If the time t / n has elapsed, the process proceeds to step S10.
The process branches to step S4, and if not, the process branches to step S101. For example, in the above example, if the currently played audio track contains the first track and ten images associated with the currently played audio track 1 are recorded, the number n of image data is 10 If the first audio track is music of 3 minutes 20 seconds, the reproduction time information t of the audio track is 3 minutes 20 seconds, and the t / n time is 3 minutes 20 seconds / 10 = 20 seconds.

When this example is applied, processing S10
Step 3 determines whether or not 20 seconds have elapsed since the image data was displayed in step S98. If 20 seconds have elapsed, the process branches to step S104. The process branches to step S101.

The process S104 is a process for judging whether or not the value of the variable P is equal to n. If the values are equal, the process branches to a process S101. If not, the process branches to a process S105. Here, the variable P is set to 1 when the first image data associated with the currently reproduced audio track is displayed (1 is substituted for P), and every time the next processing S105 is executed. Is incremented by 1 (P = P + 1).

In step S105, 1 is added to the value of the variable P.
The process of storing the variable P again is shown.

In step S106, it is determined whether or not the P-th image data associated with the currently reproduced audio track has already been stored in the memory. If the P-th image data has been stored in the memory, the process proceeds to step S107. The processing branches to step S106, and if not stored in the memory, the process S106 is executed again, that is, the process of determining whether the accumulation of the Pth image data in the memory is completed.

The process S107 is a process for displaying the P-th image data associated with the currently reproduced audio track.

Since the control is performed as described above, since the music reproduction instruction is issued, there are a plurality of (n) images associated with the music track currently being reproduced and the plurality of (n) images. When the display time information indicating when to display the image is not recorded on the medium, the reproduction time (t) is referred to by referring to the reproduction time (t) information of the music track or by referring to information similar to the reproduction time. Calculated, approximately t / n
Each time, the plurality of (n) image data can be sequentially displayed. Even when a part of the attribute information of the image data is not recorded on the medium, various image data can be displayed. Will be possible.

Processing S108, S109, S110, S1
A series of processing flows of 11, S112, S113, S114, and S115 is such that there are two or more image data items associated with the currently reproduced audio track, and two or more image data items associated with the currently reproduced audio track. This is a processing flow when display timing information indicating which timing (at what time) image data is to be displayed is present (recorded) on a medium.

The process S108 shows the process of reading the number n of image data associated with the audio track currently being reproduced and the timing information for displaying the image data associated with the audio track.

In step S109, it is determined whether or not the audio track to be reproduced has changed. If the audio track has changed, the process branches to step S82.
Shows the process of branching to. For example, processing S81, processing S8
When the processing indicated by No. 2 is executed, the music of the eleventh music is reproduced, and when the music of the twelfth music is reproduced at the time of executing the processing S109, the process branches to the processing S82 to execute the processing S109. If the music of the eleventh music piece is being reproduced at any time, the process branches to step S110.

In the step S110, it is determined whether or not the reproduction of the sound has been completed.
The process branches to 116, and if not completed, the process proceeds to step S111.
Shows the process of branching to. For example, when executing the process S110, if the user has already issued an instruction to stop the sound reproduction by pressing the reproduction stop button or the like, the process branches to the process S116. If the process is continued, the process branches to step S111.

The process S111 indicates a process of determining whether or not the value of the variable P is equal to n. If the values are equal, the process branches to a process S109, and if not, the process branches to a process S112. Here, the variable P is set to 1 when the first image data associated with the currently reproduced audio track is displayed (1 is substituted for P), and each time the next process S112 is executed. Is incremented by one (P = P + 1).

In step S112, 1 is added to the value of the variable P,
The process of storing the variable P again is shown.

In step S113, the P-th image data is currently displayed with reference to the image data display timing information (timing information for displaying the image data associated with the audio track currently being reproduced) read in step S108. It is determined whether it is the timing or whether the timing to display the P-th image data has passed. If the timing matches the timing based on the display timing information, or the timing based on the display timing information has already elapsed. If the timing is based on the display timing information, the process branches to step S114, and if the timing based on the display timing information has not been reached, the process branches to step S109.

In step S114, it is determined whether or not the P-th image data associated with the audio track currently being reproduced is already stored in the memory. If the data is not stored in the memory, the process S114 is executed again, that is, a process of determining whether the accumulation of the P-th image data in the memory is completed.

As described above, in the embodiment of the present invention,
When a music playback instruction is issued, image data associated with a music track to be played back is displayed according to the display time information.

When the display time information does not exist on the medium (is not recorded on the medium), it is displayed in the following procedure.

(1) When the number of images associated with a music track is one, only one image associated with the music track is used during a period from the start of reproduction of the music track to immediately before the start of reproduction of an audio track to be reproduced next. Display images.

(2) When there are a plurality (n) of image data associated with a music track, the reproduction time (t) is referred to by referring to the reproduction time (t) information of the music track or to information similar to the reproduction time. ) Is calculated to be approximately t / n
Each time the time elapses, the plural (n) image data are sequentially displayed.

If there is no image associated with the music track to be reproduced, display is performed in the following procedure.

(1) When an image representing a medium such as a cover picture exists, an image representing the medium is displayed.

(2) If there is no image representing the medium, such as a cover picture, image data prepared in the reproducing apparatus or characters prepared in the reproducing apparatus are displayed. Since the image display is controlled as described above, when there is no image data representing the medium, when there is no image associated with the music track to be reproduced, and when the medium has the attribute information of the image data, Various image data can be displayed according to each case, for example, when a part of is not recorded.

[0208]

As described above, the audio / image reproducing apparatus according to the present invention provides audio data or image data or T data.
Reading means for reading the OC data from the medium;
A memory for storing the read data, a signal processing unit for decoding the read data, a medium detection unit for detecting insertion of a medium, a power detection unit for detecting power-on, and a user instructing an operation. Operation input means and a system control means for turning on the power and turning on the medium recorded in the medium during a period from when the power is turned on or after the medium is inserted until an audio data reproduction instruction is issued.
(1) When there is one piece of image data representing the medium, the image data representing the medium is read out from the medium and displayed, and the image data representing the medium is read. When there is a plurality of media, a plurality of image data representing the media is read from the media, and is sequentially displayed every time a predetermined time elapses, so that the user does not perform the operation of instructing the display one by one. Also, various image data can be displayed.

(2) When one piece of image data representing the medium exists, the image data representing the medium is read out from the medium and displayed, and when a plurality of pieces of image data representing the medium exist, a predetermined value is set. By reading the plurality of image data representative of the medium from the medium and displaying the divided image on the image display screen, even if the user does not perform the operation of instructing the display one by one, various image data displays can be performed. It can be carried out.

(3) When there is no image data representative of the medium, an image prepared in advance in the reproduction apparatus or a character prepared in advance in the reproduction apparatus is displayed, so that the time during which nothing is displayed on the display screen is displayed. , And a variety of image data can be displayed.

(4) When there is no image data representing the medium, the image data associated with the smallest track number or the largest track number is read out from the medium and displayed.
Update the track numbers in ascending or descending order, read the image data associated with each track from the media, and display it sequentially every time a predetermined time elapses, so that the time when nothing is displayed on the display screen , And a variety of image data can be displayed.

(5) When there is no image data representing the medium, a predetermined plurality of images associated with the tracks are sequentially arranged in order from the image data associated with the smallest track number or the largest track number. By reading the data from the medium and displaying the divided images on the image display screen, a variety of image data can be displayed without a long time in which nothing is displayed on the display screen.

(6) If there is no image data representing the medium and no image data associated with the track, an image or character prepared in advance in the audio / image reproducing apparatus is used. By displaying, various image data can be displayed without a long time during which nothing is displayed on the display screen.

(7) When reproducing audio data, if the display timing information of the image data associated with the track of the audio data does not exist in the information on the image data of the TOC, the information is associated with the track. When the number of image data items associated with the track is one, the image data is displayed during a period from the start of reproduction of the audio track to immediately before the start of reproduction of the next audio track, If there are a plurality (n) of image data associated with the track, the reproduction time length (t) is calculated by referring to the reproduction time length (t) information of the audio track or based on information equivalent to the reproduction time length. And t /
By sequentially displaying the plurality of image data every time n time elapses, various image data can be displayed even if the user does not perform an operation of instructing the display one by one.

When the power is turned on or when a medium (mini-disc) is inserted, the TOC is immediately read from the medium (mini-disc), and the image data on the disk is stored in the memory based on the contents of the information regarding the TOC image data. After the storage is completed, when there is a reproduction instruction from the user, the audio data is immediately read into the memory, and the image data is read from the memory and displayed, so that the music can be reproduced quickly.

If the user instructs reproduction after turning on the power or after inserting the medium (mini-disc) and before completing the reading of the image data, the image data corresponding to the beginning of the desired track is not stored. Check whether the data has already been stored in the memory. If the data has been stored, the current reading of the image data from the disk is interrupted, the image data is displayed and the music is played, and the desired track is reproduced. When the image data corresponding to the head is not stored, the image data on the disc is immediately read, so that in most cases, both the display of the image data and the reproduction of the music are delayed. No operability.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a basic configuration of an audio / video reproduction device according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration in the case of a mini-disc reproducing apparatus according to an embodiment of the present invention.

FIG. 3 is a flowchart showing a first operation of a system control unit in FIG. 2;

FIG. 4 shows a second example of the system control unit and the system control unit 13 shown in FIGS. 1 and 2 according to the embodiment of the present invention.
Flow chart showing the operation of

FIG. 5 is a diagram showing a third example of the system control unit and the system control unit 13 shown in FIGS. 1 and 2 according to the embodiment of the present invention;
Flow chart showing the operation of

FIG. 6 shows a third example of the system control means 28 and the system control unit 13 shown in FIGS. 1 and 2 according to the embodiment of the present invention.
Flow chart showing the operation of

FIG. 7 is a diagram showing a fourth example of the system control unit and the system control unit 13 shown in FIGS. 1 and 2 according to the embodiment of the present invention;
Flow chart showing the operation of

8 is a diagram showing a fourth example of the system control unit 28 and the system control unit 13 shown in FIGS. 1 and 2 according to the embodiment of the present invention.
Flow chart showing the operation of

FIG. 9 shows a fifth example of the system control unit 28 and the system control unit 13 shown in FIGS. 1 and 2 according to the embodiment of the present invention.
Flow chart showing the operation of

FIG. 10 and FIG. 2 in the embodiment of the present invention.
Showing the fifth operation of the system control means 28 and the system control unit 13 of FIG.

FIG. 11 is a block diagram showing a configuration of a conventional MD reproducing apparatus.

FIG. 12 is a flowchart illustrating the operation of the system control unit in FIG. 4;

FIG. 13 is a timing chart showing the operation of taking in the audio data memory of the embodiment of the present invention (FIG. 2) and FIG. 11;

[Explanation of symbols]

 Reference Signs List 1 disc 2 spindle motor 3 optical pickup 4 traverse motor 5 motor driver 6 servo unit 8 signal demodulation unit 9, 22A audio data memory 10 memory control unit 11 audio expansion unit 12, 29 DAC 13 system control unit 14 operation input unit 15, 22B TOC memory 16, 22C Still image TOC memory 17, 22D Still image data memory 18 Disk detection unit 19 Still image display unit 20 Media 21 Read unit 22 Memory 23 Still image data memory (2) 24 Signal processing unit 25 Media detection unit 26 Power supply Detection means 27 operation input means 28 system control means 30 image display means 31 selector (SEL)

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Keiko Tanaka 1006 Kazuma Kadoma, Kadoma-shi, Osaka Matsushita Electric Industrial Co., Ltd. F-term (reference) 5D044 AB05 AB07 BC03 CC04 DE49 FG18 HL04 JJ02

Claims (7)

[Claims] 1. A sound / image reproducing apparatus for reproducing a medium on which at least audio data, image data and TOC data are recorded, wherein said audio data or image data or TOC data is read out from said medium. A memory for storing the read data, a signal processing means for decoding the read data, a medium detection means for detecting insertion of the medium, a power detection means for detecting power-on, An operation input unit for instructing an operation; and a system control unit, wherein the system control unit performs an operation input after the power supply detection unit detects the power-on or after the media detection unit detects the insertion of the medium. Means for reading out the audio data during a period until the means for reproducing the audio data is issued from the means. An instruction to read the TOC recorded on the medium and store it in the memory is given to the tier, and there is one image data representative of the medium by referring to the information on the image data of the TOC stored in the memory. Sometimes, an instruction is given to read and display the image data representing the medium from the medium, and when there are a plurality of image data representing the medium, the plurality of image data representing the medium is read from the medium and is determined in advance. A sound / image reproducing apparatus for instructing to display sequentially every time the elapsed time elapses. 2. A sound / image reproducing apparatus for reproducing a medium on which at least audio data, image data and TOC data are recorded, wherein said audio data, image data or TOC data is read from said medium. A memory for storing the read data, a signal processing means for decoding the read data, a medium detection means for detecting insertion of the medium, a power detection means for detecting power-on, An operation input unit for instructing an operation; and a system control unit, wherein the system control unit performs an operation input after the power supply detection unit detects the power-on or after the media detection unit detects the insertion of the medium. Means for reading out the audio data during a period until the means for reproducing the audio data is issued from the means. An instruction to read the TOC recorded on the medium and store it in the memory is given to the tier, and there is one image data representative of the medium by referring to the information on the image data of the TOC stored in the memory. Sometimes, an instruction is given to read and display the image data representing the medium from the medium, and when there are a plurality of image data representing the medium, read a plurality of predetermined image data representing the medium from the medium. A sound / image reproducing apparatus for instructing the image display screen to display a divided screen. 3. A sound / image reproducing apparatus for reproducing a medium on which at least audio data, image data and TOC data are recorded, wherein said audio data, image data or TOC data is read from said medium. A memory for storing the read data, a signal processing means for decoding the read data, a medium detection means for detecting insertion of the medium, a power detection means for detecting power-on, An operation input unit for instructing an operation; and a system control unit, wherein the system control unit performs an operation input after the power supply detection unit detects the power-on or after the media detection unit detects the insertion of the medium. Means for reading out the audio data during a period until the means for reproducing the audio data is issued from the means. Instruct the column to read out the TOC recorded on the medium and store it in the memory, refer to the information on the image data of the TOC stored in the memory, and when there is no image data representative of the medium, 3. The audio / image reproduction apparatus according to claim 1, wherein the audio / image reproduction apparatus is instructed to display a prepared image or a prepared character. 4. A sound / image reproducing apparatus for reproducing a medium on which at least audio data, image data and TOC data are recorded, wherein said audio data, image data or TOC data is read from said medium. A memory for storing the read data, a signal processing means for decoding the read data, a medium detection means for detecting insertion of the medium, a power detection means for detecting power-on, An operation input unit for instructing an operation; and a system control unit, wherein the system control unit performs an operation input after the power supply detection unit detects the power-on or after the media detection unit detects the insertion of the medium. Means for reading out the audio data during a period until the means for reproducing the audio data is issued from the means. Instruct the column to read out the TOC recorded on the medium and store it in the memory, refer to the information on the image data of the TOC stored in the memory, and when there is no image data representative of the medium, The image data associated with the smallest track number or the largest track number is read out from the medium and displayed, and thereafter, the track numbers are updated in ascending or descending order, and the image data associated with each track is read out from the medium. 3. The audio / image reproducing apparatus according to claim 1, wherein an instruction is given to sequentially display each time a predetermined time elapses. 5. A sound / image reproducing apparatus for reproducing a medium on which at least audio data, image data and TOC data are recorded, wherein said audio data or image data or TOC data is read from said medium. A memory for storing the read data, a signal processing means for decoding the read data, a medium detection means for detecting insertion of the medium, a power detection means for detecting power-on, An operation input unit for instructing an operation; and a system control unit, wherein the system control unit performs an operation input after the power supply detection unit detects the power-on or after the media detection unit detects the insertion of the medium. Means for reading out the audio data during a period until the means for reproducing the audio data is issued from the means. Instruct the column to read out the TOC recorded on the medium and store it in the memory, refer to the information on the image data of the TOC stored in the memory, and when there is no image data representative of the medium, Instructing to read a plurality of predetermined image data associated with a track from the medium in order from the image data associated with the smallest track number or the largest track number from the medium and to display the divided image data on the image display screen. The audio / video reproduction device according to claim 1 or 2, wherein: 6. A sound / image reproducing apparatus for reproducing a medium on which at least audio data, image data and TOC data are recorded, wherein said audio data or image data or TOC data is read from said medium. A memory for storing the read data, a signal processing means for decoding the read data, a medium detection means for detecting insertion of the medium, a power detection means for detecting power-on, An operation input unit for instructing an operation; and a system control unit, wherein the system control unit performs an operation input after the power supply detection unit detects the power-on or after the media detection unit detects the insertion of the medium. Means for reading out the audio data during a period until the means for reproducing the audio data is issued from the means. Instructs the column to read the TOC recorded on the medium and store it in the memory, and refers to the information on the image data of the TOC stored in the memory, and there is no image data representative of the medium, 3. The audio according to claim 1, wherein when no image data associated with the track exists, the audio / image reproducing apparatus is instructed to display an image prepared in advance or a character prepared in advance. -An image reproducing device. 7. A sound / image reproducing apparatus for reproducing a medium on which at least audio data, image data and TOC data are recorded, wherein said audio data, image data or TOC data is read from said medium. A memory for storing the read data, a signal processing means for decoding the read data, a medium detection means for detecting insertion of the medium, a power detection means for detecting power-on, An operation input unit for instructing an operation; and a system control unit, wherein the system control unit performs an operation input after the power supply detection unit detects the power-on or after the media detection unit detects the insertion of the medium. Means for reading out the audio data during a period until the means for reproducing the audio data is issued from the means. An instruction to read the TOC recorded on the medium and store it in the memory is given to the tier, and when an instruction to reproduce the audio data is issued from the operation input means, the instruction relating to the image data of the TOC stored in the memory is issued. With reference to the information, the image data associated with the track to be reproduced is instructed to be displayed according to the display timing information, and when the display timing information does not exist in the information regarding the TOC image data, the image data associated with the track is displayed. If the number of image data associated with the track is one, it is instructed to display the image data during the period from the start of reproduction of the audio track to immediately before the start of reproduction of the next audio track to be reproduced. When there are a plurality (n) of image data associated with a track The playback time (t) is calculated by referring to the playback time (t) information of the audio track or by referring to information similar to the playback time, and the plurality of image data are sequentially displayed every time t / n time elapses. 2. The method according to claim 1, wherein
7. The audio / video reproduction device according to 2, 3, 4, 5, or 6.