KR19980021168A - Disc seating stabilization circuit - Google Patents

Abstract

The present invention allows a disc seated on a tray in a disc playback device to be seated in the correct position.

The present invention repeatedly outputs the forward and reverse drive control signals by the microcomputer 1 during the initial predetermined time during the tray input and playback of the disk when there is a tray input command and a play command. According to the driving control signal, the motor driving unit 2 drives the motor 3 moving the tray in the forward direction and the reverse direction, and then causes the tray to be retracted and the disk is regenerated, which is generated as the motor 3 is driven in the forward and reverse directions. Vibration allows the disc to settle in the correct position on the tray, extending the useful life of the disc and preventing damage to the device.

Description

Disc seating stabilization circuit

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk seat stabilization circuit for allowing a disk seated on a tray to seat at a correct position in a disk playback device for playing a compact disk (CD), a video compact disk (VCD), a laser disk (LD), or the like. .

In general, discs such as CD, VCD, and LD are robust, and the recorded data is not easily damaged, and the recorded data has the advantage of being able to be reproduced cleanly using a laser, and its use is gradually increasing.

Disc reproducing apparatuses for reproducing discs typically have trays, and the discs are placed in and out of the apparatus by mounting the discs in the trays.

The disc seated on the tray and drawn into the inside of the apparatus is mounted on the turntable, rotated, and the pickup unit using the laser reproduces predetermined data recorded on the disc.

In such a disc reproducing apparatus, conventionally, a tray is inserted according to an insertion command regardless of whether or not the disc is correctly seated on the tray, and a reproduction operation is performed while rotating the disc according to the reproduction command.

Therefore, when the user accidentally fails to seat the disc in the correct position on the tray, the disc rotates without being correctly mounted on the turntable, which causes scratches on the disc, which shortens the service life and damages the device. There were various problems.

It is therefore an object of the present invention to provide a disc seat stabilization circuit that allows a disc to be seated in the correct position even when the disc is incorrectly seated in the tray.

Disc seat stabilization circuit of the present invention to achieve this purpose is to repeat the forward and reverse drive control signals by the microcomputer during the initial predetermined time during the tray input and playback of the disk when there is a tray input command and playback command The vibration generated when the motor is driven in the forward and reverse directions by outputting and driving the motor driving the motor moving the tray forward and backward according to the output forward and reverse drive control signals. This allows the disc to seat in the correct position in the tray.

1 is a disk seating circuit diagram according to the present invention,

2 is a control pulse diagram of the disk seat stabilization circuit according to the present invention.

Explanation of symbols on the main parts of the drawings

1: microcomputer

2: motor driving part

3: motor

Hereinafter, the disk seating stabilization circuit of the present invention will be described in detail with reference to the accompanying drawings.

1 is a stabilization circuit diagram of the present invention. As shown in the drawing, the operation of the disc player is controlled according to the input key signal, and after the output of the forward and reverse drive control signals is repeatedly output for a predetermined period of time during which the tray command and the disc play command are performed, the tray movement and A microcomputer 1 for performing a disc reproducing operation, and a motor driver 2 for driving vibrations in the tray by driving the motor 3 according to the forward and reverse drive control signals output from the microcomputer 1. ).

According to the present invention configured as described above, when a retracting command of a tray or a reproducing command of a disc is input to the microcomputer 1 as shown in FIG. 2A, the microcomputer 1 is operated for a predetermined time as shown in FIG. 2B. The forward drive control signal is repeatedly generated and the reverse drive control signal is repeatedly generated for an initial predetermined time as shown in FIG. 2C.

According to the forward drive control signal and the reverse drive control signal output as described above, the motor driving unit 2 drives the motor 3 for moving the tray.

Then, the motor 3 for moving the tray is repeatedly driven in the forward and reverse directions, whereby vibration occurs in the tray so that the disk seated on the tray is seated at the correct position.

On the other hand, the above has been described as an example in which the disk is seated at the correct position of the tray while repeatedly driving the motor (3) for entering and withdrawing the tray in the forward and reverse directions.

However, in the practice of the present invention, in the case of a disc player in which two or more discs are seated at the same time and any disc is seated on the turntable and reproduced according to a user's command, a disc selecting motor for selecting a disc and seating the disc on the turntable is provided. Repeated driving in the forward and reverse directions may be used to ensure that the disc is positioned at the correct position.

As described above, in the present invention, when the disc is inserted into the disc reel device or the disc is played, the motor is repeatedly driven in the forward and reverse directions so that the disc is settled at the correct position while vibration occurs in the disc. Even if the disc is not placed in the correct position, the disc can be placed in the correct position to extend the useful life of the disc and prevent damage to the device.

Claims (3)

Control the operation of the disc player according to the input key signal, and repeatedly output the forward and reverse drive control signals during the initial period of time when the tray input command and the disc play command are performed, and then move the tray and play the disc. A microcomputer 1 for performing the operation, a motor driver 2 for generating forward and reverse drive signals according to the forward and reverse drive control signals output by the microcomputer 1, and the motor driver 2 outputs A disk seating stabilization circuit, comprising: a motor (3) driven in a forward and reverse direction according to a forward and backward driving signal to vibrate the tray and the disc to be seated at the correct position. The disk seating stabilization circuit according to claim 1, wherein the motor (3) is a motor which draws in and draws out the tray into the apparatus. The disc seating stabilization circuit according to claim 1, wherein the disc reproducing apparatus can simultaneously mount two or more discs, and the motor (3) is a motor for moving one selected disc to a position of the turntable.