JPH09161459A - Disk device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily perform an introduction reproduction up to final track. SOLUTION: When an introduction reproduction switch 21 is pressed, an introduction reproduction mode S21 A is outputted and the level of an aural mute signal S7 A becomes low to start reproduction. When a specific amount of time T sec has passed after the level of the audio mute signal S7 A became low, a timer signal S32 A is outputted from a timer circuit 32 and a head jumps to a next track for reproduction. The level of the aural mute signal S7 A is high at the time of track jump and becomes low when a next track starts to be reproduced. In a final track, it is judged that the head is at the final track according to TOC information read from an SRAM by a microcomputer 7 and the reproduction of a CD is completed when the level of the timer signal S32 A becomes high. Therefore, the introduction reproduction is easily performed until the final track.

Description

Detailed Description of the Invention

[0001]

[0001] The present invention relates to a disk drive. Specifically, when the intro reproduction mode is set, a track jump signal is output at every predetermined time, and each track of the disc-shaped recording medium is reproduced for a predetermined time.
When the track being played is determined to be the last track, the playback is terminated when the track jump signal is output, so that the intro playback can be easily performed up to the last track. Is.

[0002]

2. Description of the Related Art A CD player for reproducing a compact disc (hereinafter referred to as "CD") is known. In order to confirm the contents of a plurality of pieces of music with a conventional CD player, for example, the track jump is repeated by manual operation.

Conventionally, some CD players have an automatic change function for storing a plurality of CDs in a magazine or the like and selecting and reproducing a desired CD. According to the CD player with the auto change function, a plurality of CDs stored in a magazine or the like can be continuously reproduced,
It is very convenient.

[0004]

As described above, in the conventional CD player, for example, the track jump is repeated by manual operation to confirm the content of the CD, which is very troublesome for the user. Especially,
In a CD player with an auto change function, multiple C
It is necessary to sequentially select D and repeat the track jump operation for each CD.

In view of this, the present invention provides a disc device which can easily perform intro reproduction of a disc-shaped recording medium up to the final track.

[0006]

DISCLOSURE OF THE INVENTION A disk device according to the present invention outputs reproducing means for reading data from a disk-shaped recording medium and reproducing it, and an audio mute release signal when the reproducing means reproduces data. , The audio mute signal output means for outputting the audio mute signal when the data is not reproduced, the intro reproduction mode setting means for outputting the intro reproduction mode signal, and the reproduction of the data when the intro reproduction mode signal is outputted. A reproduction control means for controlling the reproduction means, a timer means for starting a timer when an audio mute release signal is output in a state where the intro reproduction mode signal is output, and outputting a track jump signal after a predetermined time. , When the track jump signal is output, the track being played is rejuvenated to jump to the next track. Track jump control means for controlling the means, TOC information reading means for reading TOC information from the recording medium, and final track determination for determining whether the track being reproduced is the final track of the recording medium from the read TOC information And a reproduction end control means for controlling the reproduction means so as to end the reproduction of the recording medium when the track jump signal is output when the track being reproduced is determined to be the last track. .

When the intro reproduction mode is set, an intro reproduction mode signal is output to start reproduction and an audio mute release signal is output. When a predetermined time has elapsed after the audio mute release signal was output, the track jump signal is output from the timer means. As a result, the reproduction means is controlled by the track jump control means so as to jump from the track being reproduced to the next track. An audio mute signal is output during a track jump. Then, when the reproduction of the next track is started, the audio mute release signal is output. Therefore, the above-mentioned track jump signal is output from the timer means every predetermined time, and the track jump is repeated. Further, when the final track determining means determines that the track being reproduced is the last track from the TOC information read from the recording medium by the reading means, when the track jump signal is output from the timer means, the reproducing means: The reproduction end control means controls to end the reproduction of the recording medium.

[0008]

DETAILED DESCRIPTION OF THE INVENTION A first embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows the configuration of a CD player 100 according to this embodiment.

In FIG. 1, a CD player 100 has a spindle motor 2, an optical pickup 3, an RF amplifier section 4, a servo control circuit 5, a feed motor 6 and a microcomputer (hereinafter referred to as "microcomputer") 7.

The CD 1 placed on the tray (not shown)
It is rotationally driven by the spindle motor 2. The recording surface of the CD 1 is irradiated with a laser beam from a semiconductor laser (not shown) forming the optical pickup 3, and the reflected light is reflected by a plurality of photodetectors (not shown) forming the optical pickup 3 (for example, a 6-divided photodetector). Is irradiated. The RF amplifier unit 4 is supplied with the output signals of the plurality of photodetectors of the optical pickup 3.

The servo control circuit 5 is supplied with, for example, a tracking error signal obtained by the RF amplifier section 4 by the 3-spot method and a focus error signal by the stigma method. By supplying these signals, the servo control circuit 5 performs tracking servo and focus servo of the optical pickup 3. The servo control circuit 5 also controls the rotation of the spindle motor 2. The feed motor 6 moves the optical pickup 3 to a predetermined position under the control of the servo control circuit 5. The operation of the servo control circuit 5 described above is controlled by the microcomputer 7 that constitutes the system controller.

Further, the CD player 100 has an EFM (Ei
ght to Fourteen Modulation) and CIRC (Cross Inte)
rleave Reed-Solomon Code decoder 8, memory controller 9, SRAM (static RAM) 11, D
It has an A / A converter 12, an amplifier 13, and a speaker 14.

The reproduced RF signal obtained by the RF amplifier section 4 is supplied to the decoder 8 to perform EFM demodulation processing and error correction processing. The SRAM 11 has
Error-corrected TOC (Table of content
s) The data related to the information is stored via the memory controller 9.

The audio data is sequentially read by the control of the memory controller 9 and supplied to the D / A converter 12. The D / A converter 12 converts the audio data supplied from the memory controller 9 into an analog signal and supplies the analog signal to the amplifier 13. In the amplifier 13, D /
The analog reproduced audio signal APB supplied from the A converter 12 is amplified and supplied to the speaker 14. As a result, the speaker 14 outputs a sound based on the reproduced audio signal APB.

Further, the CD player 100 includes the microcomputer 7
The key operation unit 15 and the intro reproduction control unit 16 connected to the.

The key operation unit 15 is for the user to perform various operations. The key operation unit 15 is provided with various input keys and setting keys. The intro reproduction control unit 16 is connected to the microcomputer 7 and the key operation unit 15, processes the supplied signal and supplies the processed signal to the microcomputer 7.

FIG. 2 shows the configuration of the key operation unit 15 and the intro reproduction control unit 16.

In FIG. 2, the key operation unit 15 performs intro reproduction switch 21 for performing intro reproduction, stop switch 22, reproduction switch 23, next track jump switch 24, previous track jump switch 25, and whole track reproduction after intro reproduction. A track reservation switch 26 for reserving a track during intro reproduction is provided.

Each of the above-mentioned switches 21 to 26 is configured to output an H (high) level signal when pressed, and to output an L (low) level signal when not pressed.

The intro reproduction switch 21 outputs an H-level pulse signal (intro reproduction (mode) signal) S _21A when the intro reproduction switch 21 is pressed. The intro reproduction signal S _21A is supplied to the port E of the microcomputer 7 as an input port of the reproduction signal via the node S. The node S is composed of, for example, an exclusive OR circuit. Further, the intro reproduction signal S _21A is also supplied to an intro reproduction mode determination circuit 31, which will be described later, which constitutes the intro reproduction control unit 16.

When the level of the intro reproduction signal S _21A supplied to the input port E is switched from L to H, the microcomputer 7 receives the rising edge thereof and changes the level of the audio mute signal S _7A output from the output port A to H. From the L level to the L level, and the level of the H level pulse signal (next track jump signal) S _24A supplied to the input port C when the next track jump switch 24 is pressed is switched from the L level to the H level. In response to the rise, the level of the audio mute signal S _7A output from the output port A is switched from L to H.

The audio mute signal S _7A output from the output port A of the microcomputer 7 is supplied to the amplifier 13 and also to a timer control circuit 33, which will be described later, which constitutes the intro reproduction control section 16. The gain of the amplifier 13 is controlled to decrease when the H-level audio mute signal S _7A is supplied from the microcomputer 7. This results in a muting state.

The intro reproduction control section 16 has an intro reproduction mode discriminating circuit 31, a timer circuit 32, a timer control circuit 33 and a reproduction start signal changeover switch SW1.

In the intro reproduction mode discriminating circuit 31, the intro reproduction signal S is generated when the intro reproduction switch 21 is pressed.
_{When 21A} is supplied, the level of the output signal (intro reproduction mode determination signal) S _31A is switched from L to H in response to the rise of _21A . The intro reproduction mode determination signal S _31A is supplied to the timer circuit 32 and the reproduction start signal changeover switch SW1.

The microcomputer 7 controls each of the CDs 1 to be reproduced.
The TO stored in the SRAM 11 each time the track ends
The C information is read by the memory controller 9 to
Check if there is a track and there is no next track
Is a pulse signal of H level from the output B port (disk
Playback stop signal) S_7BThe intro reproduction mode discrimination circuit 31
To supply. The intro mode reproduction discrimination circuit 31
Disk playback stop signal S _7BIn response to the rising of
Supply to the circuit 32 and the reproduction start signal changeover switch SW1
Intro playback mode discrimination signal S_31AIs the level of H
Switch to L.

The switching operation of the reproduction start signal changeover switch SW1 is controlled by the intro reproduction mode discrimination signal S _31A supplied from the intro reproduction mode discrimination circuit 31. The movable terminal of the switch SW1 is connected to the fixed terminal on the a side when the intro reproduction mode determination signal _S31A is at the L level, and is connected to the fixed terminal on the b side when the signal _S31A is at the H level.

As a result, the intro reproduction switch SW2
When 1 is not pressed and the intro reproduction mode determination signal S _31A is at L level, the output signal (reproduction signal) S _23A of the reproduction switch 23, which is a pulse signal of H level, is a microcomputer as an input port of the reproduction signal. 7 to port E. Therefore, when the reproduction switch 23 is pressed and the reproduction signal _S23A is output, the rise of the reproduction signal _S23A causes the microcomputer 7 to control the reproduction of the CD1. On the other hand, when the reproduction switch 23 is pressed when the level of the intro reproduction mode determination signal S _31A is H due to the press of the intro reproduction switch SW21, the reproduction signal _S23A is output to the timer via the fixed terminal on the b side. While being supplied to the circuit 32, it is supplied to the port D of the microcomputer 7 as an input port of the previous track jump signal S _25A via the node T, but not to the input port E of the microcomputer 7.

The output signal (previous track jump signal) S _25A of the previous track jump switch 25, which is a pulse signal of H level, is supplied to the input port D via the node T. The node T is composed of, for example, an exclusive OR circuit. When the previous track jump signal S _25A is supplied to the input port D during reproduction of the CD 1, the microcomputer 7 receives the rising edge thereof, jumps to the beginning of the track being reproduced, and reproduces from the beginning of the track again. To control.

As described above, the audio mute signal S _7A is supplied to the timer control circuit 33 from the output port A of the microcomputer 7. In the timer control circuit 33, the level of the audio mute signal S _7A supplied from the microcomputer 7 changes from H to L.
When it falls to (release mute), in response to this, an H level pulse signal (timer start signal) S _33A is output and supplied to the timer circuit 32.

The timer circuit 32 receives the rising _edge of the timer start signal S _33A supplied from the timer control circuit 33 while the H level intro reproduction mode determination signal S _31A is supplied from the intro reproduction mode determination circuit 31. The pulse signal (timer signal) S _32A of H level is supplied to the port C of the microcomputer 7 as an input port of the next track jump signal via the node U after a predetermined time T seconds from the rising time. . The node U is composed of, for example, an exclusive OR circuit.

The next track jump signal S _24A is also supplied to the input port C via the node T. When the next track jump signal S _24A is supplied to the input port C during reproduction of the CD 1, the microcomputer 7 receives the rising _{edge of the} signal, stops the reproduction of that track, and jumps to the beginning of the next track for reproduction. Control to do.

In the above structure, when the intro reproduction switch 21 is pressed by an operation of the user or the like, the intro reproduction signal S _21A is supplied to the intro reproduction mode discriminating circuit 31 and the rising of the intro reproduction signal S _21A is received. The level of the intro reproduction mode determination signal S _31A supplied from the intro reproduction mode determination circuit 31 to the timer circuit 32 and the changeover switch SW1 is switched from L to H.
Then, in response to the rising of the intro reproduction mode determination signal S _31A , the timer circuit 32 enters the timer standby state, and the movable terminal of the changeover switch SW1 is connected to the fixed terminal on the a side.

The intro reproduction signal S _21A is also supplied to the input port E of the microcomputer 7. When intro play signal S _21A supplied to an input port E of the microcomputer 7 rises, with reproduction of the first track is started, the level of the audio mute signal S _7A to output from the output port A by the control of the microcomputer 7 is H Changes from L to m (cancel mute). Therefore, the reproduced audio signal of the first track is output from the speaker 14. Further, in response to the fall of the audio mute signal S _7A , the timer control circuit 33
The timer start signal S _33A is supplied to the timer circuit 32. Then, in response to the rising of the timer start signal S _33A , the timer circuit 32 starts the timer count. The level of the timer signal S _32A supplied from the timer circuit 32 to the input port C of the microcomputer 7 switches from L to H after a predetermined time T seconds from the timer count start time. Receiving the rising _edge of the timer signal S _32A , the microcomputer 7 stops the reproduction and jumps to the next track to start the reproduction on that track. During the track jump, the level of the audio mute signal S _7A is switched from the L level to the H level, and when the jump is completed and the reproduction of the next track is started, the level is switched from the H level to the L level. Then, in response to the fall of the audio mute signal S _7A at the start of reproduction of the next track, the timer control circuit 33 causes the timer circuit 32 to start the timer start signal S _33A.
Is supplied. As a result, the timer circuit 32 starts the timer count again and the above operation is repeated.

When the reproduction for the predetermined time T seconds on the last track is completed, the SRAM 11 is controlled by the microcomputer 7.
The TOC information stored in the memory controller 9 is read by the memory controller 9 and it is confirmed that there is no next track, and the disc playback stop signal S _7B is output from the output B port of the microcomputer 7.
Is supplied to the intro mode discrimination circuit 31. And
In response to the rise of the disk reproduction stop signal S _7B , the level of the intro reproduction mode discrimination signal S _31A supplied from the intro reproduction mode discrimination circuit 31 to the reproduction start signal changeover switch SW1 and the timer circuit 32 is switched from H to L, and In response to the fall of the reproduction mode determination signal S _31A , the movable terminal of the switch SW1 is connected to the fixed terminal on the a side. As a result, when the switch 23 is pressed, its output signal (reproduction signal) _S23A is changed to a of the switch SW1.
It is supplied to the input port E of the microcomputer 7 through the fixed terminal on the side.

In the timer circuit 32, even if the timer control circuit 33 supplies the timer start signal S _{33 A, the} timer does not start counting.

During the intro reproduction, the reproduction switch 23
When is pressed, the reproduction signal _S23A changes to the changeover switch SW.
It is supplied to the input port D of the microcomputer 7 and the timer circuit 32 via the fixed terminal on the b side of 1. Then, in response to the rise of the reproduction signal _S23A supplied to the port D, the microcomputer 7 controls to jump to the beginning of the track being reproduced and reproduce that track in the same manner as when the previous track jump switch 25 is pressed. Be started. Furthermore, in response to the rising _edge of the reproduction signal S _23A ,
Even if the timer circuit 32 is supplied with the timer start signal S _33A , the timer circuit 32 does not count the timer for the first rising. This allows the front track jump switch 2
Unlike when 5 is pressed (intro reproduction is also performed for the first track to be reproduced again), the first track selected and reproduced again is reproduced to the end.
As for the subsequent tracks, all the tracks up to the final track are continuously played intro.

Next, the operation of the CD player 100 for intro reproduction will be described with reference to FIG.

The operation of the CD player 100 differs depending on the type of the CD 1.

In the figure, (A) is a music CD (CD
-DA (Dijital Audio) or CD graphics (C that stores image data in the subcode area of a music CD)
DG (Graphics)), and (B) and (C) are M
Video C containing digital moving image and audio data as PEG (Moving Picture Experts Group) data
D (V (Video) -CD).

In the V-CD, track 1 generally has information data. The V-CD of (B) has a version of 1.0, and the second and subsequent tracks have the same structure as that of the CD-DA or CD-G.
The CD is version 1.1 or 2.0, track 2
Is further divided for each entry.

First, it is determined whether or not the TOC information of the disc to be intro reproduced from now is read into the SRAM 11 by SR.
The contents of the AM 11 are read by the memory controller 9 and confirmed. When the TOC information of CD1 is not stored in the SRAM 11, the lead-in area is read. When the SRAM 11 stores the TOC information of the disk 1, the lead-in area is not read.

Then, it is confirmed from the contents of the identification code in the TOC information whether the disc is a CD-DA or CD-G or a V-CD. (A) When it is confirmed that the CD1 is a CD-DA or a CD-G, the disc is reproduced for a predetermined time T seconds from the beginning of the track 1 of the disc, the reproduction is stopped, and the jump to the beginning of the next track 2 is performed. To do. Further, T seconds are reproduced from the beginning of the track 2 and jump to the beginning of the next track in the same manner as the reproduction time on the track 1. Repeat this until the final track. When the microcomputer 7 jumps to the beginning of the last track, the memory controller 9 informs the SRAM 11 that the track to be reproduced is the last track.
Recognizing from the TOC information read from, the reproduction is stopped when the last track is reproduced from the beginning for a predetermined time T seconds. (B) From the content of the identification code in the TOC information, CD1 is V
-If it is confirmed that the disc is a CD, the track 1 is reproduced, the information data is read, and the content (version information) is discriminated, and the standard rank of the disc is version 1.0 or version 1.1. Check if it is /2.0. If the version is 1.0, CD-
The same intro playback as when using DA or CD-G,
Repeat from the beginning of track 2 to the last track. When the intro reproduction of the last track is completed, the reproduction is stopped. (C) When it is confirmed from the content of the information data that the version is 1.1.2.0, the entry point is read, each entry number after track 2 is regarded as a track number, and entry 1 of each track is read. Play the intro for each entry until the final entry. When the intro reproduction of the last entry is finished, the reproduction is finished.

Next, timing charts showing the levels of the output signal of the key operation unit 15 and the input / output signal of the intro reproduction control unit 16 when the intro reproduction is performed by using the CD player 100 having the above-described structure, FIGS. The operation will be described with reference to FIG. Hereinafter, the CD player 100 is a front-loading type player, and the disc for intro reproduction is a CD-DA or a CD-G.

In FIG. 4, when a disc is loaded and a tray close button (not shown) is pressed, the tray returns to the inside of the main body, and the reading of TOC information in the lead-in area at the beginning of the CD 1 is started and read. TO
The C information is stored in the SRAM 11. Then, the disc is stopped until the intro reproduction switch 21 is pressed to start reproduction. In addition, after the CD 1 is mounted and before the tray close button is pressed, the intro reproduction switch 21
When is pressed, the tray automatically returns to the inside of the main body and the reproduction is started immediately after the reading of the TOC information is completed. When the CD player 100 is a top loading type, when the cover is closed, the TOC information is read, and the CD 1 is stopped until the intro reproduction switch 21 is pressed and reproduction is started.

At time t1, the intro reproduction switch 21 is turned on.
When pressed, the intro reproduction signal S _21AIs output
Input reproduction mode discrimination circuit 31 and the input port of the microcomputer 7.
Be supplied to the B. This intro reproduction signal S_21AStanding
In response to the rise, the intro reproduction mode discrimination circuit 31
Output signal S for intro mode reproduction output_31ANo level
Switch from L to H at time t1 and switch
Is supplied to the switch SW1 and the timer circuit 32. Also the same
Intro playback signal S_21ARising edge of input port B
By the control of the microcomputer 7 received at the time C from time t1
The reproduction of the track 1 (Tr1) of D1 is started. Soshi
Sound output from the output port A of the microcomputer 7.
Signal S_7ALevel changes from H to L (mu) at time t1.
Switch signal) and supply to the timer control circuit 33
Is done. Then, this audio mute signal S_7AFall of
In response to this, at time t1, the timer control circuit 33 causes the timer
Mustard signal S_33AAre supplied to the timer circuit 32.
In the timer circuit 32, this timer start signal S_33Aof
After the rising edge, the timer count starts from time t1.
Be started.

A predetermined time T seconds (for example, 8 seconds) from time t1
When time elapses, the timer signal S _32A is supplied from the timer circuit 32 to the port C of the microcomputer 7 as the input port of the next track jump signal S _24A . The microcomputer 7 receives the rising _edge of the timer signal S _32A.
The reproduction of the track 1 is stopped at the time t2 by the control of and the jump to the beginning of the next track 2 (Tr2). Further, in response to the rising of the timer signal S _32A , the level of the audio mute signal S _7A changes from L to H from time t2.
Then, the gain of the amplifier 11 is reduced to a muting state.

Playback starts at the beginning of track 2 (time t
3), the level of the audio mute signal S _7A is switched from H to L, and the gain control in the amplifier 11 is stopped (mute release). In the timer circuit control circuit 33,
In response to the fall of the audio mute signal S _7A , time t1
The timer start signal S _33A is output as in the case of.
In response to the rising of the timer start signal S _33A ,
At time t3, the timer circuit 32 starts the timer count again.

At a time t4 after a lapse of a predetermined time T seconds from the time t3, the timer circuit 3 is operated as at the time t2.
From 2, the timer signal S _32A is the next track jump signal S
_It is supplied to the port C of the microcomputer 7 as an input port of _24A , and in response to the rising of the timer signal S _32A , the reproduction of the track 2 is stopped by the control of the microcomputer 7 to jump to the beginning of the next track 3 (Tr3). At the same time, the level of the audio mute signal S _7A is switched from L to H and the gain control of the amplifier 11 is performed.

The above-mentioned reproduction and track jump operations for each track are performed by the stop switch 22 and the reproduction switch 2.
3. If the next track jump switch 24, the previous track jump switch 25, etc. are not pressed, the process is repeated until the final track.

FIG. 5 shows the output signal of the key operation unit 15 and the intro reproduction control unit 16 when any of the reproduction switch 23, the next track jump switch 24, and the previous track jump switch 25 is pressed during the intro reproduction. 3 is a timing chart for explaining the levels of the input / output signals of FIG.

First, during the intro reproduction, the reproduction switch 23
The case where is pressed will be described.

In FIG. 5, at time t9, the timer circuit 3
By supplying the H-level timer signal S _32A from 2 to the port C of the microcomputer 7 as the input port of the next track jump signal, the reproduction of the track 4 is stopped and at the beginning of the next track 5 (Tr5). Be jumped.

Playback starts at the beginning of track 5 (time t1
0), the audio mute signal S _7ALevel from H
The audio mute signal S is switched to L_7AStanding
In response to falling, timer start signal S_33AIs output
This timer start signal S_{Three 3A}The rising of
At time t10, the timer circuit 32 starts the timer count.
Be started.

When the reproduction switch 23 is pressed at the time t11 during the reproduction of the track 5 (for a predetermined time T seconds from the time t10), the reproduction signal _S23A changes to the changeover switch SW1.
The signal is supplied to the timer circuit 32 and the port D of the microcomputer 7 as an input port of the previous track jump signal S _25A via the fixed terminal on the side b. Then, in response to the rising of the previous track jump signal _S23A supplied to the port D, the reproduction of the track 5 is stopped by the control of the microcomputer 7 and the track 5 is jumped to the head.

When the jump to the beginning of the track 5 is completed, the reproduction is restarted (time t12). Here, even if the timer start signal _S33A is supplied to the timer circuit 32 at time t11, the timer count is not started for the first pulse signal. That is,
Even if the timer control circuit 33 supplies the timer start signal S _33A in response to the fall of the audio mute signal S _7A at time t12, the timer circuit 32 does not start the timer count. Therefore, even if the predetermined time T seconds has elapsed from the time t12, the timer signal S _32A does not become H level, and the reproduction of the track 5 is performed to the end.

When the reproduction of the track 5 is completed (time t13), the level of the audio mute signal S _7A becomes H between it and the next track 6 (Tr6). When the reproduction of the track 6 is started, the level of the audio mute signal S _7A switches from H to L. When the timer control circuit 33 outputs the timer start signal S _33A in response to the fall of the audio mute signal S _7A , the timer circuit 32 starts counting the timer and returns to the intro reproduction mode.

Next, the case where the next track jump switch 24 is pressed during intro reproduction will be described.

In FIG. 5, when the next track jump switch 24 is pressed at time t14 during reproduction of the track 6 (for a predetermined time T seconds from time t13), the next track jump signal S _24A is output and the next track jump signal S _24A is output. The track jump signal S _24A is supplied to the port C of the microcomputer 7 as an input port. Then, the next track jump signal S _24
In response to the rise of _A , the reproduction of the track 6 is stopped by the control of the microcomputer 7, the level of the audio mute signal S _7A changes from L to H, and the track 7 is jumped to the beginning of the next track 7 (Tr7).

When the jump to the beginning of the track 7 is completed, the level of the audio mute signal S _7A changes from H to L and the reproduction is started (time t15). Here, the timer control circuit 33 receives the fall of the audio mute signal S _7A.
Then, the timer start signal S _{33 A} is supplied to the timer circuit 32, the timer circuit 32 starts counting the timer (time t15), and then the intro reproduction is repeated.

Next, the case where the previous track jump switch 25 is pressed during intro reproduction will be described.

In FIG. 5, time t18 during reproduction of track 8 (Tr8) (for a predetermined time T seconds from time t17).
When the front track jump switch 25 is pressed, the front track jump signal S _25A is output and supplied to the port D of the microcomputer 7 as the input port of the front track jump signal S _25A . Then, in response to the rising of the previous track jump signal S _25A , the reproduction of the track 8 is stopped by the control of the microcomputer 7 and the level of the audio mute signal S _7A changes from L to H and the track 8
Is jumped to the beginning of.

When the jump to the beginning of the track 8 is completed, the level of the audio mute signal S _7A changes from H to L and the reproduction is started again (time t19). Here, in response to the fall of the audio mute signal S _7A , the timer control circuit 33 supplies the timer start signal S _33A to the timer circuit 32, and the timer circuit 32 starts the timer count (time t19). repeat.

Subsequently, the stop switch 2 is activated during the intro reproduction.
The case where 2 is pressed will be described with reference to FIG.

In FIG. 6, track 10 (Tr10)
During playback (for a predetermined time T seconds from time t23)
When the stop switch 22 is pressed by 24, an H level pulse signal (stop signal) S _22A is output and supplied to the microcomputer 7. The disc reproduction is stopped by the control of the microcomputer 7 which receives the rising _edge of the stop signal S _{2 2A} , and the audio mute signal S output from the output port A is also output.
The level of _7A is switched from L to H and mute control is performed. Further, the disk reproduction stop signal S _7B is output from the output port B. In response to the rise of the disc reproduction stop signal S _7B , the intro reproduction mode determination signal S _31A
Changeover switch SW1 from H level to H level
Supplied to As a result, the movable terminal of the changeover switch SW1 is connected to the fixed terminal on the a side. Therefore, when the reproduction switch 23 is pressed, its output signal S _23A is supplied to the port E of the microcomputer 7 as an input port of the reproduction signal via the node S, and the reproduction switch 23 functions as a normal reproduction switch. Switch to playback mode.

Next, the automatic stop operation at the last track in the intro reproduction mode will be described with reference to FIG.

In FIG. 7, a predetermined time T seconds has elapsed since the reproduction of the last track n (Trn) was started at time t28. At time t29, the timer signal S _32A is sent from the timer circuit 32 to the port of the microcomputer 7. Supplied to C. In response to the rising of the timer signal S _32A , the reproduction of the last track n is stopped by the control of the microcomputer 7. Then, it is determined from the TOC information read from the SRAM 11 that there is no next track (track n is the last track). Then, under the control of the microcomputer 7, the level of the audio mute signal S _7A is immediately switched from L to H and mute control is performed. Further, the disk reproduction stop signal S _7B is output from the output port B. In response to the rise of the disk reproduction stop signal S _7B , the level of the intro reproduction mode determination signal S _31A is switched from H to L and supplied to the changeover switch SW1. As a result, the movable terminal of the changeover switch SW1 is connected to the fixed terminal on the a side. Therefore, when the reproduction switch 23 is pressed, the reproduction signal S _23A is supplied to the input port E of the microcomputer 7 as the reproduction signal input port via the node S, and the reproduction switch 23 functions as a normal reproduction switch. Switch to normal playback mode.

As described above, in the first embodiment, the intro reproduction is automatically performed only by pressing the intro reproduction switch 21, and the contents of the CD 1 can be easily confirmed. Further, since the intro reproduction control unit 16 is provided outside the microcomputer 7, there is an advantage that the conventionally used microcomputer can be used almost as it is.

Subsequently, as a second embodiment, the operation according to the first embodiment described above is performed without using the intro reproduction mode determination circuit 31, the timer circuit 32, and the timer control circuit 33, and the switches 21 to 26 are used. The control operation of the microcomputer 7 and the memory controller 9 when realized by control by software will be described.

8 and 9 are flowcharts showing the control operation of the microcomputer 7 constituting the memory controller 9 and the system controller as the second embodiment.

In the figure, when the player is the front loading type, the process starts from step 1. On the other hand, when the player is the top loading type, after closing the drive cover in step 40, step ST
Proceed to 3.

When the player is of the front loading type and the tray is opened from the main body by the operation of the tray open switch (not shown) or the like, first, in step ST1, it is determined whether or not the tray close switch (not shown) is pressed. . If it is determined that the tray close switch has been pressed, proceed to step 2,
Put the tray back into the machine. Then, in step ST3, it is determined whether or not a disc is placed on the tray.

When it is determined in step ST3 that the disc is not placed on the tray, the process proceeds to step ST27 to exit the intro reproduction mode routine and return to the main routine.

When it is determined in step ST3 that the disc is placed on the tray, the process proceeds to step ST4, and the TOC written in the lead-in area of the disc.
The information is read by the memory controller 9 and the SRAM 11
To be stored. Then, in step ST5, the rotation of the disc is stopped and the laser power of the optical pickup 3 is turned off (reproduction standby state).

Then, in step ST6, it is determined whether or not the intro reproduction switch 21 is pressed. When it is determined that the button has been pressed, the process proceeds to step ST13.

On the other hand, when it is determined in step ST6 that the intro reproduction switch 21 is not pressed, the process proceeds to step ST7 and it is determined whether or not any switch other than the intro reproduction switch 21 is pressed. When it is determined that any switch other than the intro reproduction switch 21 has been pressed, the operation proceeds to step ST28 and the operation corresponding to the pressed switch is performed, and in step ST7 it is determined that the switches other than the intro reproduction switch 21 are not pressed. At this time, the process returns to step ST6 again to determine whether or not the intro reproduction switch 21 is pressed.

When it is determined in step ST1 that the tray close switch is not pressed, the process proceeds to step ST8. In step ST8, similarly to step ST6, it is determined whether or not the intro reproduction switch 21 is pressed.

In step ST8, the intro reproduction switch 2
When it is determined that 1 is not pressed, step ST
In step 9 as in step ST7, it is determined whether a switch other than the intro reproduction switch has been pressed. When it is determined that any switch other than the intro reproduction switch has been pressed, the operation proceeds to step ST28 and the operation corresponding to the pressed switch is performed, and when it is determined in step ST9 that the switches other than the intro reproduction switch 21 are not pressed. Returns to step ST1 again to determine the tray close switch.

In step ST8, the intro reproduction switch 2
When it is determined that 1 is pressed, the tray is automatically returned in step ST10 as in step ST2, and then the process proceeds to step ST11 to determine whether or not a disc is placed on the tray as in step ST3. To do. When it is determined that the disc is not loaded on the tray, the process proceeds to step ST27 to exit the intro reproduction mode routine and return to the main routine. Step ST
When it is determined in 11 that the disc is placed on the tray, the process proceeds to step ST12, the TOC information is read from the disc and stored in the SRAM 11 as in step ST5, and then the process proceeds to step ST13.

In step ST6, the intro reproduction switch 2
When it is determined that 1 is pressed or the TOC information read from the disc in step ST12 is stored in the SRAM 11, the TOC information read from the disc indicates that the disc placed on the tray is
It is determined whether it is a music CD (CD-DA) or CD graphics (CD-G) or a video CD (V-CD).

If it is determined in step ST13 that the disk placed on the tray is a V-CD, step S13
When it is determined to be CD-DA or CD-G in T14, the process proceeds to step ST17.

At step ST14, the reproduction of the track 1 of the V-CD is started to read the information data. Then, in step ST15, the rank of the V-CD is judged (whether it is version 1.0 or version 1.1 or version 2.0) from the read information data. If it is determined that the version is 1.0, the process proceeds to step ST17.

When it is determined in step ST15 that the V-CD version is 1.1 or 2.0, the process proceeds to step ST16, the entry point of the entry data is read from the information data, and the entry is performed in the subsequent steps. The number is regarded as a track number and the process proceeds to step ST17.

In step ST17, reproduction is performed from the track 1 (track 2 for the V-CD of version 1.0, and entry 1 of track 2 for the V-CD of version 1.1.2.0), and the timer is set. To start.

Then, in step ST18, it is determined whether or not the reproduction switch 23 has been pressed. When it is determined that the reproduction switch 23 is not pressed, the process proceeds to step ST19, and it is determined whether or not a predetermined T second (for example, 8 seconds) has elapsed as the intro reproduction time. When it is determined that the intro reproduction time T seconds has not elapsed, the process returns to step ST18 and the determination of whether or not the reproduction switch 23 is pressed is repeated again.

When it is determined in step ST19 that the intro reproduction time T seconds has elapsed, the process proceeds to step ST20, the intro reproduction of the track is terminated, and the process proceeds to step ST20.

When it is determined in step ST18 that the reproduction switch 23 is pressed, the process proceeds to step ST21 to return to the beginning of the track being reproduced, restart reproduction, and reproduce until the end of the track (step ST2).
2). When the reproduction of the track is completed in step ST22, the process proceeds to step ST23.

In step ST23, it is determined whether or not the track reservation switch 26 is pressed during the intro reproduction. When it is determined that the track reservation switch 26 is not pressed, the process proceeds to step ST26.

When it is determined in step ST23 that the track reservation switch 26 is pressed during reproduction, the process proceeds to step ST24, and whether the track number reserved by the track reservation switch 26 is in the reservation memory (in this mode Before entering, it is determined whether or not a program operation has been performed and playback reservation has already been made. If it is determined that the track number is in the reservation memory, the process proceeds to step ST26. This is a judgment for preventing double reservation when the reproduction reservation program made previously is already reserved, but if a new reproduction reservation is made from the beginning, this step ST24 It can be omitted.

If it is determined in step ST24 that the track number reserved by the track reservation switch 26 during reproduction is not in the reservation memory, step ST25.
After that, the track number is stored in the reservation memory, and the process proceeds to step ST26.

At step ST26, it is determined from the contents of the TOC information read from the SRAM 11 whether or not the currently playing disc has a next track. If it is determined that the next track is not on the disc, step ST2
The program proceeds to step 7 to exit the intro reproduction mode routine and return to the main routine.

If it is determined in step ST26 that the currently playing disc has a next track, the process jumps to the beginning of the next track and proceeds to step ST17.
Start playing the next track.

After this intro reproduction mode ends, S
It is confirmed whether or not the track number is stored in the RAM 11, and if it is stored, the contents of the track number are sequentially reproduced normally based on the TOC information. This SR
Execution of the reproduction reservation based on the information of the AM 11 may be performed, for example, when the reproduction reservation switch 26 is pressed during the normal mode.

As described above, in the second embodiment, as in the first embodiment, the intro reproduction of the CD1 is performed only by pressing the intro reproduction switch 21, and the C
The contents of D1 can be easily confirmed. Further, the intro reproduction control unit 16 required in the first embodiment
Since it is unnecessary, the cost can be reduced.

Next, referring to FIG. 10 and FIG.
A CD player 200 with an automatic change function as a third embodiment of the present invention will be described. 10 and 11, parts corresponding to those in FIGS. 1 and 2 are designated by the same reference numerals, and detailed description thereof will be omitted.

In FIG. 10, the CD player 200 is
It has a disk exchange section 17 connected to the microcomputer 7.
The disc exchanging unit 17 performs an exchanging operation for mounting an arbitrary CD 1 at a reproducing position under the control of the microcomputer 7.

FIG. 11 shows the configuration of the key operation unit 15 and the intro reproduction control unit 16. In the figure, the key operation unit 15 has a reproduction disc reservation switch 27 for reserving a disc for (intro) reproduction. The output signal S _27A of the switch 27 is configured to be at H level while being pressed and at L level when not being pressed.

Next, with reference to FIG. 12, the operation when the intro reproduction is performed by the CD player 200 with the automatic change function according to the third embodiment will be described.

In the figure, the disc number 1 is a music CD (CD-DA (Dijital Audio)) or music C.
It is CD graphics (CD-G (Graphics)) in which image data is stored in the subcode area of D, and the disc numbers 2 and 3 are MPEG (Moving).
A video CD (V (Vide) containing digital moving image and audio data as Picture Experts Group) data.
o) -CD).

The description of these discs is the same as that described above, and will not be repeated.

When the intro reproduction is performed, unless the reproduction disc reservation switch 27 is pressed to specify the disc number, the disc number 1, the disc number 2, and the disc number 3 are sequentially reproduced. Here, it is assumed that there is no reservation by the reproduction disk switch 27.

When the intro reproduction switch 21 is pressed, it is first determined whether or not the TOC information of the disc number 1 to be intro reproduced from now is read into the SRAM 11.
The contents of the RAM 11 are read and confirmed by the memory controller 9. When the TOC information of the disk 1 is not stored in the SRAM 11, the lead-in area is read. When the TOC information of the disk 1 is stored in the SRAM 11, the lead-in area is not read.

Subsequently, it is confirmed from the identification code in the TOC information that the CD1 having the disc number 1 is CD-DA or CD-G, and the track 1 is moved for a predetermined time T from the beginning.
After the second playback, the playback is stopped and the next track 2 is jumped to. Further, T seconds are reproduced from the beginning of the track 2 and jump to the beginning of the next track in the same manner as the reproduction time on the track 1. Repeat this until the final track.

When the microcomputer 7 jumps to the beginning of the last track, the memory controller 9 informs the SRA that the track to be reproduced is the last track.
Recognizing from the TOC information read from M11 and playing the last track for a predetermined time T seconds from the beginning, the disc number 1 to the disc number 2 CD
Replace with 1.

When the disc number 2 is reproduced, the contents of the SRAM 11 are read out as in the case of the disc number 1 CD1, and when the TOC information of the disc number 2 CD1 is not stored, the disc is read. The lead-in area of the number 2 disc is read, and when the TOC information is stored, the lead-in area is not read.

Then, from the identification code in the TOC information,
It is confirmed that the CD 1 of the disc number 2 is the V-CD, and the track 1 is reproduced. Then, the information data in the track 1 is read and the content (version information) is discriminated, and the CD of the disc number 2 is read.
By confirming that the standard rank of 1 is version 1.0, the intro reproduction similar to that of the CD 1 having the disk number 1 is repeated from the head of the track 2 to the last track. When the intro reproduction of the last track is completed, the disc is replaced with CD1 having the disc number 3.

Even in the case of CD1 having the disc number 3,
As with the CD1 with disc numbers 1 and 2, SR
Read the contents of AM11, C of disk number 3
When the TOC information of D is not stored, the lead-in area is read, and when the TOC information is stored, the lead-in area is not read.

Then, it is confirmed from the identification code in the TOC information that the CD1 of the disc number 3 is the V-CD, and the track 1 is reproduced. Then, the information data in the track 1 is read to determine the content (version information), and the CD 1 of the disc number 3 is read.
By confirming that the standard rank of is 1.1.2.0, read the entry point,
Each entry number after the track 2 is regarded as a track number, and the intro reproduction for each entry is performed from the entry 1 to the final entry of the track 2. When the intro playback of the last entry is finished, the intro playback is finished.

Here, an intro reproduction mode discriminating circuit 31, a timer circuit 32, a timer circuit control circuit 33, which constitute the intro reproduction control unit 16 in the intro reproduction mode,
The operation of the reproduction start signal changeover switch SW1 and the operation when the switches 23 to 25 are pressed are the same as those in the first embodiment shown in FIGS. However, when the stop switch 22 is pressed, unlike the first embodiment, two operations are performed depending on the pressing period. The operation will be described with reference to FIG.

In FIG. 13, the track 10 (Tr1
When the stop switch 22 is pressed for a short time (shorter than the detection period T1) at the time t31 during the reproduction of 0) (between the time t30 and the predetermined time T seconds), the H-level stop signal is output. S _22A is output and supplied to the microcomputer 7. The disc reproduction is stopped by the control of the microcomputer 7 in response to the rise of the stop signal S _22A , and
The level of the audio mute signal S _7A output from the output port A is switched from L to H to perform mute control, but the disc playback stop signal S _7B is not output from the output port B, and the next CD1 is replaced. The action is taken and the cd
Intro playback of 1 continues.

On the other hand, when the stop switch 22 is pressed for a long time
In case of a period (longer than detection period T1) (long press)
Is a stop signal S output from the stop switch 22._22Aof
Detection time by the control of the microcomputer 7
At the time of t32, the intro reproduction is finished and the output port
Disk playback stop signal S from B_7B(Dotted line) is output,
This disc playback stop signal S_7BReceived the rise of
Output signal S of intro reproduction mode discrimination circuit 31_31ANore
Switch from bell or H to L and use for switch SW1
Be paid. As a result, the movable terminal of the changeover switch SW1
Is connected to the fixed terminal on the a side. Therefore, the playback switch
When the switch 23 is pressed, its output signal S _23AIs a node
Of the microcomputer 7 as an input port of a reproduction signal via S
It is supplied to the input port and the regeneration switch 23
Switch to normal playback mode that functions as a raw switch
You.

As described above, in the third embodiment, intro reproduction is automatically performed only by pressing the intro reproduction switch 21, as in the first embodiment.
The contents of CD1 can be easily confirmed. Also,
Since the intro reproduction controller 16 is provided outside the microcomputer 7, there is an advantage that the conventionally used microcomputer can be used almost as it is. Further, in the third embodiment, a reproduction disk reservation switch 27 for reserving a disk to be reproduced is provided in the key operation unit 15, and the time for pressing the stop switch 22 is changed to replace the CD 1 and end the intro reproduction. You can take action.

Subsequently, as a fourth embodiment, the operation according to the above-described third embodiment is performed without using the intro reproduction mode determination circuit 31, the timer circuit 32, and the timer control circuit 33, and the switches 21 to 27 are used. The control operation of the microcomputer 7 and the memory controller 9 when realized by control by software will be described.

14 and 15 are flow charts showing the control operation of the microcomputer 7 constituting the memory controller 9 and the system controller as the fourth embodiment.

In the figure, first in step ST51, it is determined whether or not the reproduction disk reservation switch 27 has been pressed. When it is determined that the reproduction disk reservation switch 27 is not pressed, the process proceeds to step ST53.

If it is determined in step ST51 that the reproduction disk reservation switch 27 has been pressed, step ST
After proceeding to 52 to store the disk number in the SRAM 11, proceed to step ST53.

At step ST53, it is determined whether or not the intro reproduction switch 21 is pressed. When it is determined that the button has been pressed, the process proceeds to step ST55.

On the other hand, when it is determined in step ST53 that the intro reproduction switch 21 is not pressed, it proceeds to step ST54 and it is determined whether or not any switch other than the intro reproduction switch 21 is pressed. When it is determined that any switch other than the intro reproduction switch 21 has been pressed, the process proceeds to step ST79 to perform the operation corresponding to the pressed switch, and it is determined in step ST54 that the switches other than the intro reproduction switch 21 are not pressed. At this time, the process returns to step ST53 again to determine whether or not the intro reproduction switch 21 is pressed.

At step ST55, the contents of the SRAM 11 are read out and it is judged whether or not the reproduction disk reservation data is stored. If it is determined that the data of the reproduction disk reservation is not stored, step ST56.
In step ST58, the CD 1 having the disc number 1 is moved to the reproduction position, and the process proceeds to step ST58.

If it is determined in step ST55 that the data for the reproduction disk reservation is stored, step ST55
After proceeding to 57 and placing the disk of the first data of the reserved data on the tray, the process proceeds to step ST58.

At step ST58, it is determined whether or not a disc is placed on the tray. When it is determined that the disc is not placed on the tray, step ST7
Go to 7. When it is determined in step ST58 that the disc is placed on the tray, the process proceeds to step ST59 to read the contents of the SRAM 11 and whether the TOC information of the disc placed on the tray is stored (recognized). To determine. When it is determined that the TOC information has been recognized, the process proceeds to step ST61.

When it is determined in step ST59 that the TOC information of the disc to be reproduced is not recognized,
In step ST60, the TOC information written in the lead-in area of the disc is stored in the memory controller 9
Is read out and stored in the SRAM 11, and then step ST
Go to 61.

At step ST61, it is determined from the TOC information read from the disc that the disc placed on the tray is a music CD (CD-DA) or CD graphics (CD-G), or a video CD (V-CD). -C
D) is determined.

If it is determined in step ST61 that the disk placed on the tray is a V-CD, step S61
When it is determined to be CD-DA or CD-G in T62, the process proceeds to step ST65.

At step ST62, the reproduction of the track 1 of the V-CD is started to read the information data. Then, in step ST63, the rank of the V-CD is judged (whether version 1.0, version 1.1 or version 2.0) from the read information data. If it is determined that the version is 1.0, the process proceeds to step ST65.

When it is determined in step ST63 that the V-CD version is 1.1 or 2.0, the process proceeds to step ST64, the entry point of the entry data is read from the information data, and the entry is performed in the subsequent steps. The number is regarded as the track number and the process proceeds to step ST65.

At step ST65, reproduction is performed from the track 1 (from the track 2 in the V-CD of version 1.0 and from the entry 1 of the track 2 in the V-CD of version 1.1.2.0), and Start the timer.

Subsequently, in step ST66, it is determined whether or not the reproduction switch 23 is pressed. When it is determined that the reproduction switch 23 is not pressed, the process proceeds to step ST67, and it is determined whether or not a predetermined T seconds (for example, 8 seconds) has elapsed as the intro reproduction time. When it is determined that the intro reproduction time T seconds has not elapsed, the process returns to step ST66 and the determination as to whether or not the reproduction switch 23 is pressed is repeated again.

When it is determined in step ST67 that the intro reproduction time T seconds has elapsed, the process proceeds to step ST68 to end the intro reproduction of the track and proceeds to step ST71.

If it is determined in step ST66 that the reproduction switch 23 has been pressed, the process proceeds to step ST69 to return to the beginning of the track being reproduced, restart reproduction, and reproduce until the end of the track (step ST7).
0). When the reproduction of the track is completed in step ST70, the process proceeds to step ST71.

At step ST71, it is determined whether or not the track reservation switch 26 is pressed during the intro reproduction. When it is determined that the track reservation switch 26 is not pressed, the process proceeds to step ST74.

When it is determined in step ST71 that the track reservation switch 26 is pressed during reproduction, the process proceeds to step ST72, and whether the track number reserved by the track reservation switch 26 is in the reservation memory (in this mode). Before entering, it is determined whether or not a program operation has been performed and playback reservation has already been made. If it is determined that the track number is in the reservation memory, the process proceeds to step ST74. This is a determination for preventing double reservation when the reproduction reservation program made previously is already reserved, but if a new reproduction reservation is made from the beginning, this step ST72 is It can be omitted.

If it is determined in step ST72 that the track number reserved by the track reservation switch 26 during reproduction is not in the reservation memory, step ST73.
After that, the track number is stored in the reservation memory, and then the process proceeds to step ST74.

At step ST74, it is judged from the contents of the TOC information read from the SRAM 11 whether or not the currently reproduced disc has a next track. If it is determined that the next track is not on the disc, step ST76
Then, the intro reproduction of the disc is completed and the process proceeds to step ST77.

If it is determined in step ST74 that the currently playing disc has a next track, the process jumps to the beginning of the next track and proceeds to step ST65.
Start playing the next track.

At step ST77, it is determined whether or not there is a next disk. If it is determined that there is no next disk, the process proceeds to step ST79 to exit the intro reproduction mode routine and return to the main routine.

If it is determined in step ST77 that the next disk reservation data is stored, step ST77
After proceeding to 78 and exchanging with the next disc, step ST
Return to 58.

After this intro reproduction mode ends, S
It is confirmed whether or not the track number is stored in the RAM 11, and if it is stored, the contents of the track number are sequentially reproduced normally based on the TOC information. This SR
Execution of the reproduction reservation based on the information of the AM 11 may be performed, for example, when the reproduction reservation switch 26 is pressed during the normal mode.

In the present invention, a mini disc (MD),
It can also be applied to digital video discs (DVD), laser discs (LD), and the like. In a medium such as an LD, a V-CD entry may be a chapter number, and it is easy to apply a name corresponding to such a medium. Also, it can be applied to the case where the user himself / herself recorded the marker signal at a desired position. Also, an example has been described in which whether or not the track is the last track is determined when it is determined to stop the intro reproduction mode. However, it is needless to say that this track can be replaced with an entry that is a data delimiter.

As described above, in the fourth embodiment, similarly to the second embodiment, the intro reproduction of the CD1 is performed only by pressing the intro reproduction switch 21, and the C
The contents of D1 can be easily confirmed, and the intro reproduction control unit 16 required in the third embodiment is unnecessary while maintaining the function of the third embodiment, so that the configuration is inexpensive. it can.

[0140]

According to the present invention, when the intro reproduction mode is set, a track jump signal is output at every predetermined time, and each track of the disk-shaped recording medium is reproduced for a predetermined time, and is the last track. When the determination is made, the reproduction is stopped when the track jump signal is output, so that the intro reproduction can be easily performed up to the final track of the disc-shaped recording medium, for example, the CD.

[Brief description of the drawings]

FIG. 1 is a CD player 100 according to a first embodiment.
FIG. 3 is a block diagram showing the configuration of FIG.

FIG. 2 is a block diagram showing a configuration of an intro reproduction control unit 16 and the like shown in FIG.

FIG. 3 is a diagram showing a difference in intro reproduction operation due to a difference in disc type in the first embodiment.

FIG. 4 is a timing chart showing the levels of the output signal of the key operation unit 15 and the input / output signal of the intro reproduction control unit 16 at the time of intro reproduction in the first embodiment.

FIG. 5 is a timing chart showing the levels of the output signal of the key operation unit 15 and the input / output signal of the intro reproduction control unit 16 at the time of intro reproduction in the first embodiment.

FIG. 6 is a timing chart showing the levels of the output signal of the key operation unit 15 and the input / output signal of the intro reproduction control unit 16 during the intro reproduction in the first embodiment.

FIG. 7 is a timing chart showing the levels of the output signal of the key operation unit 15 and the input / output signal of the intro reproduction control unit 16 at the time of intro reproduction in the first embodiment.

FIG. 8 is a flowchart illustrating a control operation according to the second embodiment.

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

FIG. 10 is a CD player 20 according to a third embodiment.
FIG. 3 is a block diagram showing a configuration of a 0.

11 is a block diagram showing a configuration of an intro reproduction control unit 16 and the like shown in FIG.

FIG. 12 is a diagram showing a difference in intro reproduction operation due to a difference in disc type in the third embodiment.

FIG. 13 is an output signal of the key operation unit 15 and an intro reproduction control unit 16 during intro reproduction according to the third embodiment.
3 is a timing chart showing the levels of the input / output signals of FIG.

FIG. 14 is a flowchart showing a control operation of the fourth embodiment.

FIG. 15 is a flowchart showing a control operation of the fourth embodiment.

[Explanation of symbols]

 1 Compact Disc (CD) 2 Spindle Motor 3 Optical Pickup 4 RF Amplifier Section 5 Servo Control Circuit 6 Feed Motor 7 Microcomputer 8 Decoder 9 Memory Controller 11 SRAM 12 D / A Converter 13 Amplifier 14 Speaker 15 Key Operation Section 16 Intro Playback Control Part 17 Disc Exchange Part 21 Intro Play Stop Switch 22 Stop Switch 23 Play Switch 24 Next Track Jump Switch 25 Previous Track Jump Switch 26 Track Reserve Switch 27 Play Disk Reserve Switch 31 Intro Play Mode Discrimination Circuit 32 Timer Circuit 33 Timer Control Circuit 100 CD Player 200 CD player SW1 selector switch

Claims (1)

[Claims] 1. A reproducing means for reading and reproducing data from a disk-shaped recording medium, an audio mute release signal is output when the reproducing means is reproducing the data, and a reproducing means is not reproducing the data. An audio mute signal output means for outputting an audio mute signal, an intro reproduction mode setting means for outputting an intro reproduction mode signal, and the reproduction means for starting reproduction of the data when the intro reproduction mode signal is output. Reproduction control means for controlling, timer means for starting a timer when the audio mute release signal is output in a state where the intro reproduction mode signal is output, and outputting a track jump signal after a predetermined time, the track jump When the signal is output, the above playback is performed so that the track being played is jumped to the next track. The track jump control means for controlling the step, the TOC information reading means for reading the TOC information from the recording medium, and the read TOC information determine whether or not the track being reproduced is the last track of the recording medium. And a final track determining means for controlling the reproducing means so as to end the reproduction of the recording medium when the track jump signal is output when it is determined that the track being reproduced is the final track. A disk device comprising a control means.