JP2522439Y2 - Disk playback device - Google Patents

Description

[Detailed description of the invention] Overview In recent years, a compact disc reproducing apparatus for in-vehicle use has been equipped with a magazine for accommodating a plurality of compact discs, and a desired compact disc is selected from the plurality of discs by an auto change function. It is selected and reproduced by the reproduction mechanism. If the stop switch is operated during playback, the disc motor stops and playback stops, but the compact disc remains mounted on the turntable, and the optical pickup remains in close proximity to the compact disc. State. Therefore, in the present invention, when the unstable reproduction stop period passes a predetermined standby period, the mounted compact disk is automatically stored in the magazine, and the compact disk accompanying the vibration of the vehicle body is automatically stored. To avoid damage. Further, it is also possible to avoid a malfunction of inserting and ejecting the compact disk due to the displacement of the magazine due to the vibration or the like.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk reproducing apparatus equipped with a magazine for storing a plurality of disks such as a compact disk.

2. Description of the Related Art Conventionally, in addition to magnetic tape reproducing devices, compact audio discs (hereinafter referred to as "discs")
That. ) Tend to be equipped with a compact disc playback device for playing back. Further, in the compact disk reproducing apparatus, there is a model which can be equipped with a magazine for accommodating a plurality of disks for the convenience of operation of a listener.
The listener selects a desired disk from the magazine by using the selection switch, and further operates the reproduction switch, whereby the selected disk is mounted on the turntable, and is connected to the reproduction mechanism including the optical pickup. Will be played. When the stop switch is operated in the reproduction state, the reproduction is interrupted and stopped, and by operating the discharge switch, the disc is discharged from the reproduction mechanism and stored again in the magazine. The function of automatically loading / receiving a disc between the playback mechanism and the magazine in this manner is called an auto change function.

As described above, when the stop switch is operated in the playback state and the playback is stopped, the motor for driving the disk stops, but the disk itself remains mounted on the turntable. Further, the optical pickup is close to the reproduction stop position and is waiting.

Therefore, in the case of a compact disc reproducing apparatus for use in a vehicle, there is a risk that the recording surface of the disc may collide with the optical pickup or the surrounding area due to vibrations caused by the running of the vehicle body in the above-mentioned reproduction stopped state. Which can result in damage to the disk. Damage to the recording surface of the disc is manifested by significant loss of sound signal such as skipping of sound.

Further, the position of the magazine fluctuates due to the vibration or the like, and as a result, when the disc is stored in the magazine in response to the operation of the discharge switch, the storage space in which the disk was stored before mounting is described. There is a possibility that a malfunction of disk insertion / ejection such as being stored in a different storage space may occur. Therefore, it is necessary to avoid the reproduction stop state as much as possible, particularly in an in-vehicle disk reproducing apparatus in which vibration is apt to occur.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a disk reproducing apparatus capable of reliably avoiding damage to a disk during a reproduction stop period and erroneous operation of disk insertion / ejection.

Means for Solving the Problems The present invention provides a reproducing means for mounting and reproducing a disc, a magazine for accommodating a plurality of discs, taking out a predetermined disc from the magazine and mounting the disc on the reproducing means, A disk insertion / ejection means for removing a disk mounted on the means and storing the disk in the magazine; a stop switch operated to stop reproduction; and a disk mounted on the reproduction means in response to an operation of the stop switch. When the reproduction stop period after the operation of the stop switch reaches a predetermined time, the disk mounted on the reproduction means is loaded into the magazine by the disk insertion / ejection means. And a control means for accommodating the disc in the disc reproducing apparatus.

According to the present invention, the disc is mounted and stored in the reproducing means and the magazine by the disc inserting / ejecting means, and the disc thus selected and mounted is reproduced by the reproducing means. When the stop switch is operated, the reproduction by the disk mounted on the reproduction means is stopped by the control means. Further, the control means measures a reproduction stop period after the operation of the stop switch. When the reproduction stop period reaches a predetermined time, the control means stores the disk mounted on the reproduction means in the magazine by the disk insertion / ejection means.

Therefore, when the reproduction stop period is long, the disk is automatically stored in the magazine by the auto change function, and the unstable reproduction stop state is not continued for a long time.

FIG. 1 is a block diagram showing a simplified configuration of a compact disk reproducing apparatus 1 according to an embodiment of the present invention. The compact disc reproducing apparatus 1 includes:
The compact disc reproducing apparatus 1 can store a plurality of compact discs (hereinafter referred to as “discs”) 3 (31 to 3n), for example, stacked in the magazine 2, and selectively store the discs 3 from the discs 3. A favorite disk 3i is taken out and the recorded content is reproduced by a single reproducing mechanism 4.

Magazine 2 in which multiple compact disks 3 are stored
Is attached to and detached from the magazine storage unit 5. The magazine storage unit 5 is connected to and supported by a magazine elevating mechanism 6 including a plurality of gear trains and a plurality of screw rods, which are rotatably driven by a motor, and is driven by the magazine elevating mechanism 6. The magazine storage part 5 is displaced up and down, for example.

The reproducing mechanism 4 includes a disk motor 7 for rotating and driving the disk 3i to be inserted and mounted, a turntable 8 mounted on an output shaft of the disk motor 7, and a clamp for clamping the disk 3i together with the turntable 8. It comprises a mechanism 9 and an optical pickup 10 for reading out the recorded contents recorded on the disk 3i. The output from the optical pickup 10 is an acoustic circuit.
Digital / analog conversion and the like are performed by 11 and are derived from the speaker 12 as acoustic signals.

A disc insertion / ejection mechanism 13 realized by a loading motor, a plurality of rollers, and the like is provided between the magazine 2 mounted on the magazine storage section 5 and the reproduction mechanism 4. The disk insertion / ejection mechanism 13 takes out the disk 3i from the storage space of a predetermined height of the magazine 2 which moves up and down as described above, inserts the disk 3i into the reproduction mechanism 4, and
The disk 3i taken out is mounted on the upper part. Alternatively, the disc 3i after the end of the reproduction is ejected from the reproduction mechanism 4, and is stored again in the storage space of the magazine 2 in which the disk 3i was stored first.

The operation of inserting and ejecting disks between the respective mechanisms is controlled by a processing circuit 14 composed of, for example, a microcomputer in response to the operation of various switches from a group of operation switches 15 provided in association therewith. The processing circuit 14 is control means.

The operation switch group 15 includes a reproduction switch 16 and a lifting switch
17, further includes a stop switch 18 and the like. The reproduction switch 16 is operated when selecting the disk 3i stored in the magazine 2 and reproducing the disk 3i. When the reproduction switch 16 is operated, the disk 3i is taken out of the magazine 2 displaced up and down by the disk insertion / ejection mechanism 13, inserted into the reproduction mechanism 4 and mounted on the turntable 8. After that, it is reproduced.

The elevating switch 17 is divided into, for example, an ascending switch 19 and a descending switch 20, and displaces the magazine accommodating section 5 to which the magazine 2 is attached and detached at predetermined intervals, and selects the disk selected by the disk insertion / ejection mechanism 13. It is operated when the storage space is moved to a height at which the storage space can be taken out. That is, when the raising switch 19 is operated, the magazine storage section 5 is raised, and as a result, the magazine 2 is raised, while when the lowering switch 20 is operated, the magazine 2 is lowered.

When the stop switch 18 is operated, a stop signal is output from the processing circuit 14 to the reproducing mechanism 4, and the reproduction of the mounted disk 3i is stopped. In the reproduction stop state, only the motor 7 is stopped, the disc 3i is kept pressed by the turntable 8 and the clamp mechanism 9, and the optical pickup 10 is moved to the position where the reproduction is stopped. Stays close to.

In this embodiment, when the stop switch 18 is operated in the playback state, the processing circuit 14 stores information on the point at which the playback was interrupted and stopped in the random access memory 21. The information corresponds to, for example, the music number (track number) being reproduced on the mounted disk 3i, the reproduction elapsed time at the music number, and the like. Further, the processing circuit 14 controls the stop switch 18 by a standby timer 22.
The reproduction stop period T in which the reproduction after the operation is stopped is counted.

When the reproduction stop period T measures a predetermined standby time Tref, the listener determines that the mounted disk 3i has not been requested to be reproduced for a long period of time, and the processing circuit 14 inserts the disk. An ejection signal for instructing ejection of the disk 3i is given to the ejection mechanism 13. The disc ejection mechanism 13 ejects the mounted disc 3i from the reproducing mechanism 4 in response to the ejection signal and stores the disc 3i in the storage space of the corresponding magazine 2. The standby time Tref is appropriately selected, for example, from about 30 seconds to 1 minute. Therefore, when the playback stop state is likely to elapse over a long period of time, the disc 3i attached to the playback mechanism 4 is automatically ejected,
Re-stored in Magazine 2.

That is, even if the compact disc player 1
Is used in an environment where vibrations are likely to occur, such as in a vehicle.
The playback stop period in which the periphery of the vehicle is unstable does not continue in a meaningless manner, and as a result, the disk 3i
The chance of the recording surface of the optical pickup 10 being damaged by colliding with the optical pickup 10 or the peripheral portion can be avoided as much as possible. Further, it is possible to avoid the occurrence of a malfunction of disk insertion / ejection in which the magazine 2 moves up and down in response to the vibration and the mounted disk 3i cannot be re-stored in the corresponding storage space to be re-stored.

Hereinafter, the operation of inserting and ejecting a disk according to the present embodiment will be described with reference to a flowchart.

FIG. 2 is a flowchart for explaining a process of discharging the disk 3i based on the operation of the stop switch 18, which is executed when the reproducing mechanism 4 is reproducing the disk 3i. In step s1, it is determined whether or not the reproduction of the disk 3i has been stopped in response to the operation of the stop switch 18. When the reproduction is stopped, information such as the music number and the reproduction time at the time of the reproduction stop is registered in the memory 21 in step s2, and in step s3, the measurement of the reproduction stop period T by the standby timer 22 is started. Thereafter, in step s4, it is determined whether or not the reproduction stop period T has reached a predetermined standby time Tref.

When the standby time Tref is reached, the reproduction stop state continues for a long time, and the reproduction of the mounted disk 3i is not requested, so that the mounted disk 3i is removed in step s5. Is automatically stored in the storage space of the corresponding magazine 2. Therefore, since the unstable state of the mounted disk 3i does not continue for a long period of time, for example, damage to the disk 3i due to vibration or malfunction of insertion / ejection to / from the magazine 2 is possible. Can be avoided.

FIG. 3 is a flowchart for explaining the reproduction process of the disk 3i based on the operation of the reproduction switch 16, and is executed when the reproduction of the disk 3i is stopped. Step
At m1, it is determined based on the operation of the reproduction switch 16 whether or not the reproduction of the mounted disk 3i has been requested again. If the determination is negative, the process proceeds to step
At m2, based on the operation of the elevating switch 17, it is determined whether or not another disk 3 stored in the magazine 2 other than the mounted disk 3i is selected. Thus, in steps m1 and m2, selection of a disk to be reproduced is awaited.

If the lift switch 17 is operated in step m2, it is determined that another disk has been selected, and
At m3, the information such as the music number at the time of the reproduction stop registered at the time of operating the stop switch 18 is cleared. That is,
This is because the information on the mounted disk 3i has become unnecessary due to a request to reproduce another disk 3. afterwards,
At step m4, the disc insertion / ejection mechanism 13 ejects / stores the disc 3i from the playback mechanism 4 into the corresponding storage space of the magazine 2 by the auto change function, and then plays back the selected disc 3 from the magazine 2. Insert and attach to mechanism 4. After that, in response to the operation of the reproduction switch 16, the reproduction from the head track of the disc 3 mounted in step m5 is started.

On the other hand, when the reproduction switch 16 is operated in the step m1, it is determined that the replay of the mounted disk 3i is requested, and the time is counted by the standby timer 22 in the step m6. It is determined whether or not the reproduction stop period T has reached the standby time Tref. If the reproduction stop period T has not reached the standby time Tref, the disk 3i is mounted without being stored in the magazine 2 and the information registered in the memory 21 is read out in step m7. At step m8, the reproduction is started again from the reproduction stop time based on the information.

When it is determined in step m6 that the reproduction stop period T has already reached the standby time Tref, the disk 3i already mounted is stored again in the corresponding storage space of the magazine 2. . Therefore, at step m9, the same disk 3i is
Is taken out of the magazine 2 and mounted on the reproducing mechanism 4 again. At step m10, it is determined whether the mounting of the disk 3i has been completed. After the mounting is completed, the information at the reproduction stop time is read from the memory 21 in step m7, and the reproduction is started again from the reproduction stop time in step m8, as described above.

As described above, in the present embodiment, after the operation of the stop switch 1S, after the elapse of the standby time Tref, the disk 3i mounted on the reproducing mechanism 4 is automatically stored in the magazine 2. By the way, as described above, the reproduction stop state is as follows.
Due to the unstable condition around the mounted disk 3i,
It should be avoided as much as possible. Therefore, each time the stop switch 16 is operated, the disk that has been
With the configuration in which the 3i is re-stored in the magazine 2, a configuration in which the reproduction stop state is completely eliminated is also conceivable. However, in the above-described configuration, when the same disk 3i is reproduced again, a large amount of time is spent when the magazine 3 is remounted from the magazine 2 to the reproduction mechanism 4, so that the operability is poor. In the present embodiment, a standby time is provided in consideration of this viewpoint.

Although the present embodiment has been described with reference to a compact disc reproducing apparatus for use in a vehicle, this is not a limitation in the present embodiment.

Further, in this embodiment, the automatic storage of the disk is executed after the standby time has elapsed from the reproduction stop period after the stop switch operation. Alternatively, automatic disk storage may be performed when the standby time elapses after the end of reproduction without operating the stop switch.

Therefore, according to the present embodiment, the operability is not significantly reduced, the playback stop period is not continued in a meaningless manner, and as a result, damage to the mounted disk,
It is possible to avoid an opportunity to cause an erroneous operation of inserting / ejecting a disk into / from a magazine.

According to the present invention, when the playback stop period after the stop switch operation exceeds a predetermined time, the disc mounted on the playback means is automatically stored in the magazine.
The unstable period around the mounted disk does not continue in a meaningless manner. Therefore, even in an environment where vibrations are likely to occur, such as in an in-vehicle disc reproducing apparatus, there is an opportunity to damage the discs due to the vibrations or to cause a malfunction in inserting / ejecting the discs into / from a magazine as much as possible. Can be avoided. That is, the damage and malfunction do not occur.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a simplified configuration of a compact disk reproducing apparatus 1 according to one embodiment of the present invention, and FIG. 2 is a flow chart for explaining a process of discharging a disk 3i based on an operation of a stop switch 18. Fig. 3 shows the reproduction switch
6 is a flowchart for explaining a disk 3i reproduction process based on 16 operations. 1 ... compact disc player, 2 ... magazine,
3 ... Compact disk, 4 ... Reproducing mechanism, 5 ... Magazine storage section, 6 ... Magazine lifting / lowering mechanism, 8 ... Turn table, 10 ... Optical pickup, 13 ... Disk insertion / ejection mechanism, 14 ... Processing Circuit, 18 ... Stop switch, 21 ...
Random access memory, 22: standby timer, T: playback stop period, Tref: standby time

Claims (1)

(57) [Scope of request for utility model registration] 1. A reproducing means for mounting and reproducing a disk, a magazine for accommodating a plurality of disks, a predetermined disk being taken out of the magazine and mounted on the reproducing means, and a disk mounted on the reproducing means. A disc insertion / ejection means for removing and storing the disc in the magazine; a stop switch operated to stop the reproduction; and reproducing the disc mounted on the reproduction means in response to the operation of the stop switch. Control means for stopping the disc and, when the reproduction stop period after the operation of the stop switch reaches a predetermined time, storing the disc mounted on the reproduction means in the magazine by the disc insertion / ejection means; A disc reproducing apparatus comprising: