JPS63214964A - Disk housing device in disk reproducing device - Google Patents

Abstract

PURPOSE:To prevent a disk from being hurt by drawing a tray so as to reproduce when a magazine is set in a specified mounting part and returning the disk to the tray so as to house the tray in the magazine by means of a reproducing device when stopping operation is executed in the midst of reproducing. CONSTITUTION:When the stopping operation of a reproducing is executed in the midst of reproducing the disk by a disk reproducing means, the reproducing device completes the reproducing of the disk and returns the disk to the tray so as to house the tray in the magazine. Even in an on-vehicle disk reproducing device it is evaded that the disk abuts on the metallic plate in the mechanical part of the reproducing device by vibration following the running of an automobile to be hurt.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention sets a magazine containing a large number of discs, selects and plays one disc from the magazine, and then plays the disc by stopping the magazine. The present invention relates to a disc storage device for a disc playback device in which the tray is returned to the magazine and the tray is stored in the magazine.

[Conventional technology and its problems]

Conventionally, in a playback device that plays back a disc stored in a magazine, the player selects and pulls out a tray in the magazine to select a disc with music selection specified, and then attaches the pulled out disc in the tray to a turntable and plays it. It is. If you perform a stop operation during this playback,
The spindle motor stops while the disc is clamped to the turntable. Further, when the eject operation is performed, the disc clamped on the turntable is released and returned to the tray, and the tray is also returned to the magazine and then released from the playback device.

By the way, in the above-mentioned disc playback device, the disc is clamped to the turntable when it is stopped during playback, so there is no problem in the case of a stationary type disc playback device, but in the case of a disc playback device for a car. A problem occurs if That is, since the disc is clamped to the turntable, there is a problem in that the disc comes into contact with a metal plate in the mechanical part of the playback device due to vibrations caused by the driving of the automobile, causing scratches on the disc.

[Purpose of the invention]

The present invention aims to solve the above-mentioned problems, and when a stop operation is performed during disk playback, the disk is returned to the tray, and the tray is stored in the magazine, so that vibrations etc. To provide a disc storage device in a disc playback device that prevents discs from being scratched.

[Summary of the invention]

In order to achieve the above-mentioned object, when a playback stop operation is performed while a disk is being played by a disk playback means, the disk playback is ended and the disk is returned to the tray, and the disk is returned to the tray. is stored in the magazine.

[Embodiments of the invention]

Next, one embodiment of the present invention will be described with reference to FIG.

In FIG. 1, reference numeral 1 denotes a magazine that stores N (N is a natural number of 2 or more) disks arranged in order at a predetermined pitch. The magazine 1 is provided with N trays for carrying disks in a housing that protrudes from the magazine body. The magazine 1 is detachably attached to a predetermined attachment portion. One of the N disks D, ~DN stored on each of the N trays as a plurality of disk storage positions provided in this magazine 1 is transferred to the rotating shaft of the spindle motor 3 by the disk ejecting and conveying mechanism 2. It is conveyed and clamped onto the disk supporting surface of the turntable 4 to which it is fixed. The disk ejecting conveyance mechanism 2 is connected to the magazine 1.
a protrusion member that protrudes the tray of the disc and moves the disc onto the disc support surface of the turntable 4; a clamp mechanism that clamps the disc when the disc is moved onto the disc support surface of the turntable 4 by the protrusion member; It has a moving plate that changes the relative position of the protruding member with respect to the magazine 1 in the tray arrangement direction, and a sensor that detects the position of the moving plate, the operation of the clamp mechanism, etc. By moving the movable plate in the disk ejecting and transporting mechanism 2, the position of the protruding member is changed, and a disk can be selected. The configurations of the magazine 1 and the disk ejecting and transporting mechanism 2 are detailed in Japanese Patent Application No. 153651/1983.

Recorded information on the disk Dn, which is taken out from the magazine 1 by the disk ejecting and conveying mechanism 2 and clamped onto the disk supporting surface of the turntable 4, is read by the optical pickup 6. The pickup 6 includes a laser diode, an objective lens, a focus actuator, a tracking actuator, a photodetector, and the like.

The output of the pickup 6 is supplied to each of a focus servo circuit 7, a tracking servo circuit 8, and a reproduction clock generation circuit 9 including an RF amplifier.

In the focus servo circuit 7, a focus error signal is generated by, for example, an astigmatism method, and a focus actuator in the pickup 6 is driven in accordance with this error signal. As a result, the laser light emitted from the laser diode and passed through the objective lens is focused on the recording surface of the disk Dn, forming an information detection light spot. Further, the tracking servo circuit 8 generates a tracking error signal using, for example, a push-pull method, and this error signal is sent to the tracking actuator in the pickup 6 and the carriage servo circuit 10. The output of the carriage servo circuit 10 is supplied to a motor Ma that drives a carriage (not shown) carrying the pickup 6, and the pickup 6 is sent in the radial direction of the disk Dn.

A reproduced clock signal for demodulation is generated in the reproduced clock generation circuit 9 and supplied to the spindle servo circuit 11. In the spindle servo circuit 11, a drive signal according to the phase difference between the reproduced clock and the reference clock from the clock generation circuit 12 is generated to drive the spindle motor 3, and control the track linear velocity of the disk Dn to be constant. be done. Further, the output of the RF amplifier in the reproduced clock generation circuit 9 is supplied together with the reproduced clock to an EFM demodulation circuit 13 including a frame synchronization circuit. EFMf
The demodulated output of the i11 circuit 13 is processed by a data processing circuit 14 that performs deinterleaving, error detection, correction, correction, etc. of the demodulated data signal.

Thereafter, the demodulated output is temporarily stored in a data memory 15, read out using a clock signal from a clock generation circuit 12, and converted into an analog signal by a D/A (digital/analog) converter 16. This analog signal is output as left and right audio signals via an LPF (low pass filter) 17 and an amplifier 18. Furthermore, amplifier 18
is configured to receive control data and change its frequency characteristics in accordance with the control data.

On the other hand, the control signal in the data from the EFM demodulation circuit 13 is supplied to the system controller 20, and during the song,
Various information such as song intervals, song numbers, playing times, and disc model numbers are read. The system controller 20 is formed of one or more microcomputers including a processor, ROM (read-only memory), RAM (random access memory), an interface circuit, a timer, and the like. In this system controller 20, a processor is stored in advance in the ROM and operates according to a program based on the flowchart shown in FIG. The output data is processed to supply various commands and data to the carriage servo circuit IO, spindle servo circuit 11, amplifier 18, display 22, and drive circuits 24 and 25. The random number generation circuit 23 is configured, for example, to latch and output the output of an m-ary counter (where m is a natural number) whose coefficient values sequentially change in extremely short cycles in response to a data output command. In addition, the drive circuit 24.25
are motors M b and M c that respectively drive the moving plate and the protruding member in the disk ejecting and transporting mechanism 2.
The drive current is configured to supply a drive current according to a command to the drive current.

Note that 26 is a RAM that stores information from the system controller 20.

81 to S4 are various detection switches arranged near the magazine 1 mounted in a predetermined mounting part, SI is a magazine detection switch that sends out an output when the magazine 1 is mounted in a predetermined mounting part, and St is a protrusion. S is a tray detection switch that detects whether or not a tray is stored in the magazine 1, and S4 is a position of the magazine 1 that moves up and down with respect to the turntable 4. This is a magazine position detection switch that detects the position of the magazine.

Next, the operation of the processor in the system controller 20 will be explained with reference to the flowchart of FIG.

First, when the power is turned on, the processor monitors whether the magazine 1 is set in the predetermined mounting section or not.Step a)
, when magazine 1 is attached to a predetermined attachment part and magazine detection switch SI detects the set of magazine 1 and sends the detection signal to the processor, the processor
It is determined that is set and proceeds to the next step.

In the next step, the magazine 1 is moved up and down to set the magazine 1 to a position where the top or bottom tray can be pulled out (step b), and the magazine position detection switch S4 receives the position signal of the magazine 1. Once sent to the processor, the processor proceeds to the next step.

In the next step, it is detected whether or not there is a disk in the tray to be pulled out. In step C), when the disk detection switch St detects a disk, the process proceeds to the next step.

Then, in the next step, the processor monitors whether the playback switch is turned on or not (step d), and when the playback switch is operated and turned on, the processor sends a signal for loading the disc to the playback device. Output. Therefore, the playback device loads the disc (step e) and then shifts to the playback state (step f).

In this reproduction state, the processor monitors whether a stop operation has been performed or not (step g), and when the stop operation is performed, the processor outputs a signal to store the disc. Therefore, the playback device returns the disc to the tray and stores the tray in the magazine 1 (step h
), and the processor monitors whether or not the tray is stored in the magazine l.In step i), when the tray storage detection switch S3 detects storage of the tray, the operation of the processor ends.

〔Effect of the invention〕

As described above, in the present invention, when a magazine is set in a predetermined mounting part, the tray is pulled out and played, and when a stop operation is performed during the playback, the playback device returns the disc to the tray and then removes the tray. Since the disc is stored in a magazine, even if it is used in a place with strong vibrations such as in a car, the disc will not come into contact with the metal plate of the mechanical part of the playback device, and therefore the disc will not be scratched. This has the advantage that no noise is generated during reproduction or reproduction becomes impossible.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the disc playback device of the present invention, and FIG. 2 is a flowchart of the device shown in FIG. l...Magazine, 2...Disc ejection transport mechanism, 2
0...System controller, SI...Magazine detection switch, S,...Disk detection switch, S,...
...Tray storage detection switch, S4...Magazine position detection switch.

Claims (1)

[Claims] A magazine retracting means for setting a magazine inserted into the disc reproducing apparatus into the disc reproducing apparatus, a magazine detecting means for detecting that the magazine is set by the magazine retracting means, and a magazine detecting means for detecting that the magazine is set by the magazine retracting means. a tray drawer for sequentially pulling out the trays one by one from the magazine; a disk playback means for playing back the disks in the tray pulled out by the tray drawer; and when the disk is being played by the disk playback means. When the playback stop operation is performed, the disc playback is ended and the disc is returned to the tray, and
1. A disk storage device for a disk playback device, comprising tray storage means for storing the tray in a magazine.