KR20030020027A - Method for controlling disk tray of disk player - Google Patents

Abstract

PURPOSE: A method for controlling a disk tray of a disk player is provided to open the disk tray only after stopping a spindle motor, thereby preventing a disk from being damaged. CONSTITUTION: A pick-up unit picks up information of a disk loaded in a tray and a digital signal processor reproduces the information(S301). A control part determines whether a tray open command signal is input from a key input part(S302). The control part drives the disk inside the tray if the tray open command signal is not input, otherwise, determines whether the disk exists in the tray(S303). The control part determines driving of a spindle motor based on an operation signal of the spindle motor(S304). If the control part detects the operation signal, the control part stops the spindle motor through a servo part(S305). If the control part detects no operation signal, the control part opens the tray(S306).

Description

How to control the disc tray of your disc player {METHOD FOR CONTROLLING DISK TRAY OF DISK PLAYER}

The present invention relates to an optical disc player, and more particularly, to a disc tray control method of a disc player that can prevent physical damage of a disc that may occur in an abnormal mode.

An optical disk for reproduction only, such as a general CD-ROM, has a physically secure information recording surface, so that a bare disk (disk without a cartridge) is loaded into the disk drive device. In contrast, since rewritable disc media such as a DVD-RAM has a relatively weak recording surface, it is a general trend to store a disc in a cartridge and load it into a disc drive device in order to protect the information recording surface of the disc from external contamination and impact sources. . When the bare disk or cartridge is loaded and transported to the point where the pickup is accessible, the bare disk or cartridge is seated on the turntable of the spindle motor. At this time, a load completion state is called an eject (open) state in which the tray is sent out to allow the user to remove the bare disk or cartridge mounted on the tray or to mount another disk or cartridge to the tray.

The disc tray control method of such a disc player is described below.

First, when a disc playback command loaded in the tray is input by a user's key operation, the information of the disc loaded in the tray is picked up by the pickup section, and the picked up information is digitally processed by the digital signal processing section for playback (recording). )do.

When the tray open command signal is input through the user's key operation during the disk operation, the tray is opened, and when the tray open command signal is not input, the information continuously picked up is reproduced.

When the tray open command is input during normal disc play, the tray is opened after the spindle motor is stopped.

However, when the pickup portion that picks up the information of the disc does not properly track and focus the information of the disc, the spindle motor continues to rotate to track and focus the information of the disc. When the tray open signal is input by the user's key operation while the spindle motor rotates to match the tracking and the focusing, the disc is damaged because the disc loaded in the tray is rotated and the tray is opened to the outside.

In addition, if the tray is opened while the disc is rotating, the disc loaded in the tray may be ejected to the outside and may be thrown out and a dangerous situation may occur.

An object of the present invention is to solve the problems of the prior art, to provide a disk play prevention method of the disk play to open the tray after stopping the drive of the spindle motor in response to the input of the tray open signal during the disk drive. .

In order to achieve this object, the present invention provides a disk tampering in a disc play having a key input unit for generating a signal for opening a tray loaded with an optical disc, and a control unit for controlling a spindle motor for rotating the disc loaded in the tray. A method of preventing, comprising: a first step of determining whether a tray open signal is input from the key input unit, and if the tray open signal is input as a result of the determination, whether a drive signal is output from the spindle motor A second step of determining whether or not, and a third step of opening the tray after stopping the spindle motor when the drive signal is output as a result of the determination.

1 is a block diagram showing a conventional disk drive device;

2 is a flowchart illustrating a disc tray control process of the disc player according to the present invention.

<Description of the code | symbol about the principal part of drawing>

200: tray 210: key input unit

220: control unit 230: servo unit

240: spindle motor 250: pickup

260: digital signal processing unit

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

1 is a block diagram illustrating a conventional disc drive device, and FIG. 2 is a flowchart illustrating a disc tray control process of a disc player according to the present invention.

Referring to FIG. 1, the disc driving apparatus includes a tray 200 for accommodating a disc, a key input unit 210 for applying a user's command (for example, a recording, a reproducing command, and a command for opening the tray 200) to a disc. ), A control unit 220 for controlling the overall functions of the disk drive device, a spindle motor 240 attached to the rotating shaft to rotate the disk loaded on the tray 200, predetermined information on the disk loaded on the tray 200 Pickup from the pickup unit 250 for recording or reproducing the data, the spindle motor 240 controlled by the controller 220 and the servo unit 230 for controlling the driving of the pickup unit 205, and the pickup unit 250. When the received information is transmitted as a high frequency (RF) signal, the digital signal is processed to transmit the corresponding information to the servo unit 230 or the control unit 220, and the audio signal includes a digital signal processing unit 260 for outputting a reproduction signal.

When the open command of the tray 200 is input through the key input unit 210 while the disk is being driven, the controller 220 determines whether the disk is present in the tray 200, and stops the spindle motor 240 when the disk is present. The control signal is transmitted to the servo unit 230.

The servo unit 230 corrects an error by controlling the pickup unit 250 and the spindle motor 240 in order to match the disc focusing and tracking during the disc tracking and focusing error, and is output from the spindle motor 240. A frequency generation pulse (FGP), which is a signal, is input to determine whether the spindle motor 240 is driven. The servo unit 240 receives the spindle motor 240 control signal from the controller 220 and stops the spindle motor 240 regardless of tracking and focusing servo error correction operations.

The disc tray control process of the disc player having the above configuration will be described below with reference to FIG.

First, when a disc play command loaded in the tray 200 is input by an operation of the key input unit 210, the information of the disc loaded in the tray 200 is picked up by the pickup unit 250, and the picked up information is The digital signal processor 260 processes the digital signal and reproduces (records) (S301).

During the disk operation, the controller 220 determines whether the tray 200 open command signal is input from the key input unit 210 (S302).

As a result of the determination in step 302, if the open command signal of the tray 200 is not input, the control unit 220 returns to step 301 to drive the disk in the tray 200, otherwise, the disk in the tray 200 is removed. It is determined whether or not there is (S303).

As a result of the determination of step 303, when there is no disk in the tray 200, the controller 220 opens the tray 200, otherwise, the operation of the spindle motor 240 transmitted from the servo unit 230 is performed. It is determined whether or not the spindle motor 240 is driven based on the frequency generation pulse which is a signal (S304).

As a result of the determination of step 304, when there is no operation signal of the spindle motor 240, the control unit 220 opens the tray 200 (S306), and otherwise, if there is an operation signal of the spindle motor 240, the control unit 220 controls the servo. After stopping the spindle motor 240 through the unit 230, the tray is opened (S305 and S306).

When the tray open signal is input through the key input unit as described above, the control unit may stop the spindle motor after opening the tray regardless of the operation of the servo unit due to abnormal modes (spindle motor runaway, tracking and focusing servo error, etc.). Can be.

As described above, if the tray open signal is input during disk drive, the controller may stop the spindle motor by opening the tray after stopping the spindle motor, regardless of spindle motor run-up, tracking and focusing servo error correction. There is an effect that can prevent.

In addition, if the tray is opened while the disk is rotating, a risk situation caused by the disk loaded in the tray is ejected to the outside and bounces off.

On the other hand, the present invention is not limited to the above-described embodiment, various modifications are possible by those skilled in the art within the spirit and scope of the present invention described in the claims to be described later.

Claims (3)

A method for preventing disc damage in a disc play having a key input unit for generating a signal for opening a tray loaded with an optical disc and a control unit for controlling a spindle motor for rotating the disc loaded in the tray. A first step of determining whether a tray open signal is input from the key input unit; A second step of determining whether a drive signal is output from the spindle motor when the tray open signal is input as a result of the determination; And a third step of opening the tray after stopping the spindle motor when the drive signal is output as a result of the determination. The method of claim 1, The disc tray control method of the disc player, Determining whether a disk loaded in the tray is present according to the input of the tray open signal; The third step is a disc tray control method of a disc player, characterized in that the tray is opened when there is no loaded disc as a result of the determination. The method of claim 1, The drive signal is, And a frequency generating pulse generated according to the driving of the spindle motor.