KR100594217B1 - Method of operating tray of disk player - Google Patents

Abstract

Disclosed is a tray input / output control method of a disc player. When the tray withdrawal signal is inputted from the entry / exit operation switch that controls entry / exit of the tray which is installed in and out of the housing, the tray is reached until the tray reaches the extraction reference position where the interference member installed on the tray interferes with the interference switch installed on the housing. A first tray withdrawal step of driving the loading motor for driving a; and when the interference member of the tray reaches the interference switch and the extraction reference position signal is generated, a predetermined distance from the extraction reference position to release the interference between the interference member and the interference switch. And a second tray withdrawal step of driving the loading motor such that the tray is further withdrawn to the withdrawal completion position set farther. According to the tray access control method of the disc player, even when the tray is inadvertently moved in the process of mounting the disc to the tray, the tray can be prevented from being inserted and the disc mounting error can be suppressed.

Description

Control method of tray input and output of disk player {Method of operating tray of disk player}

1 is a cross-sectional view schematically showing a tray entry / exit structure of a disc player to which the present invention is applied;

2 is a block diagram showing a tray driving apparatus of a disc player to which the present invention is applied;

3 is a flow chart showing a process of performing a tray entry / exit mode according to the present invention.

4 is a waveform diagram illustrating a signal generated in a process of performing a tray withdrawal mode according to the present invention;

FIG. 5 is a waveform diagram illustrating a signal generated in a process of performing a tray retracting mode according to the present invention. FIG.

<Explanation of symbols for the main parts of the drawings>

11: Tray entry / exit switch 12: Tray

13: housing 14: interference member

15: interference switch 20: control unit

21: loading motor 22: tray withdrawal position detection unit

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tray entry / exit control method of a disc player, and more particularly, to a tray entry / exit control method of a disc player which can suppress a tray from being sensitively drawn in by an external force.

In general, a disc player is optically picked up on a deck in a housing to record information on a disc and / or read recorded information, a tray in which the disc is accommodated, a tray moving means for moving the tray into and out of the housing; And a tray entry / exit operation switch for controlling entry and exit of the tray.

The tray moving means includes a rack gear (not shown) formed on the tray, a pinion gear (not shown) and a loading motor (not shown) installed to rotate the pinion gear on the housing so as to be engaged with the rack gear. do.

Also, when the tray reaches the withdrawal target position so that the control unit controlling the loading motor can recognize the withdrawal target position of the tray, an interference switch for detecting the withdrawal position for generating a signal to the control unit by being interfered by an interference member installed on the tray. It is provided.

It looks at the input and output operation of the tray of the conventional tray drive device.

First, the user operates the entry / exit operation switch so that the tray is withdrawn from the housing when the user wants to newly mount the disk or removes the mounted disk from the tray while the tray is retracted into the housing.

When the tray withdrawal signal is input by the operation of the entry / exit operation switch, the control unit drives the loading motor so that the tray is withdrawn from the housing.

When the tray reaches the target lead-out position where the interference member interferes with the interference switch by the rotation of the loading motor, the driving of the loading motor is stopped.

After performing the draw-out mode, the user inserts a new disk on the tray or performs a predetermined operation of detaching the mounted disk from the tray, and then moves the input / output switch or the tray into the housing to insert the tray into the housing. The user performs an action of moving the tray a predetermined distance.

However, in the related art, when the tray is finely moved in the housing direction while the tray is withdrawn from the housing, the interference state of the interference switch by the interference member is immediately released, and the control unit detects the signal change of the interference switch and loads the tray to be retracted. Drive the motor straight away.

According to the conventional tray entry / exit method, if the disc is placed on the tray while the tray is withdrawn, carelessly interfering the tray in the direction of the housing causes the tray to be immediately moved into the housing, whereby the disc is incompletely in the tray. There is a problem that can be mounted. In this way, if the tray is moved into the housing while the disk is incompletely mounted on the tray, the tray may not be drawn into the housing by the incompletely mounted disk, thereby overloading the loading motor and the disk may be damaged.

 SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and provides a tray input / output control method of a disc player which controls an input / output drive of a tray so as to suppress a disc from being mismounted to a tray during an input / output operation of a tray by a user. The purpose is to provide.

In order to achieve the above object, according to the present invention, it is possible to mount a tray on the tray, the tray is installed so as to be able to enter and exit the housing by the rotation of the loading motor, the interference member provided on the tray, and the outside of the housing. The loading motor is driven by using an interference switch provided on the housing so as to interfere with the interference member at the draw position of the tray to generate a draw reference position signal, and the draw reference position signal generated from the interference switch. A tray player input / output control method for a disc player, comprising: a control unit for controlling and a tray input / output operation switch configured to output an input / output signal of the tray to the loading motor control unit. A first tray drawout step of driving the loading motor until the tray reaches a draw reference position where an interference member of the tray interferes with the interference switch when a tray drawout signal is input from the tray drawout operation switch; I. When the interference member of the tray reaches the interference switch and the pullout reference position signal is generated, the tray is reached to a pullout completion position set a predetermined distance farther from the pullout reference position to release the interference between the interference member and the interference switch. And a second tray drawing out step of driving the loading motor to draw more.

Preferably. Determining whether the tray has retracted from the withdrawal completed position to the withdrawal reference position by external force; la. Counting time when the tray is determined to have reached the drawing reference position in the multi-step; hemp. And a tray retracting step of driving the loading motor so that the tray is moved into the housing when the time counted in the step LA reaches a set delay time.

Hereinafter, a tray input / output control method of a disc player according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a cross-sectional view schematically showing a tray input and output structure of a disc player to which the present invention is applied, and FIG. 2 is a block diagram showing a tray driving apparatus of a disc player to which the present invention is applied.

Referring to the drawings, the tray driving apparatus includes a tray entry / exit operation switch 11, a control unit 20, a loading motor 21, and a tray take-out position detecting unit 22.

The tray 12 is installed in and out of the housing 13.

The tray 12 is configured to be linearly moved by the rotation of the loading motor 21.

Although not shown, a conventional interlocking structure between the tray 12 and the loading motor 21 is a rack gear (not shown) formed on the tray 12 so that the tray 12 can be linearly moved by the rotation of the loading motor 21. And a pinion gear (not shown) installed on the housing 13 to be engaged with the rack gear so as to be driven by rotation of the loading motor 21.

When the tray entry / exit operation switch 11 is installed on the outside of the housing 13 to draw the tray 12 into or out of the housing 13, the tray 12 can be introduced into the housing 13. A user input means for generating an input signal corresponding to the incoming and outgoing to the control unit 20.

The tray withdrawal position detecting unit 22 is for checking the withdrawal position of the tray 12. When the tray withdrawal position detecting unit 22 reaches the set withdrawal reference position, the interference member 14 installed on the tray 12 is interfered with the interference member 14. And an interference switch 15 provided on the housing 13 to generate a drawing reference position signal.

The interference switch 15 is preferably structured so as not to interfere with the advancement of the interference member 14 even if it is interfered by the interference member 14. For example, the interference switch 15 adopts a rotating structure or a known appropriate switch structure that can be returned to a set position when the interference by the interference member 14 is released without affecting the advancement of the interference member 14. Is preferred. In the illustrated example, the interference switch 15 is configured to generate a pull-out reference position signal when the interference switch 15 is in contact with the interference member 14, but it is possible to detect the passage of the position set on the tray 12 by a non-contact method, for example, by an optical method. It can be installed to make it.

The control unit 20 controls the driving of the loading motor 21 so that the drawing mode for drawing out the tray 12 or the drawing mode for drawing the tray 12 is performed according to a signal input from the tray input / output operation switch 11. . In addition, the control unit 20 controls the driving of the loading motor 21 according to the pull-in mode or the pull-out mode according to the present invention by using the signal generated from the interference switch 15.

A tray entry / exit control process according to the present invention of the tray driving apparatus having such a configuration will be described with reference to FIG. 3.

First, in step 100, it is determined whether the tray is in the draw out mode or the tray pull out mode.

When the tray entry / exit operation switch 11 is operated in a state where the tray 12 is retracted into the housing 13 and a tray take-out signal is input from the tray entry / exit operation switch 11 to the controller 20 as shown in FIG. 4. In operation 110, the controller 20 determines that the tray draw mode is performed and drives the loading motor 21. The loading motor 21 is typically driven at a voltage of 5 volts with a predetermined duty (ratio of drive on time for a set period). At this time, the loading motor 21 is rotated in a direction corresponding to the direction in which the tray 12 is drawn out from the housing 13.

In the process of driving the loading motor 21, the controller 20 determines whether the tray 12 has reached the tray withdrawal reference position (step 120).

If the interference member 14 formed on the tray 12 interferes with the interference switch 15 provided on the housing 13 and the signal corresponding to the interference is input from the interference switch 15, the control unit 20 may provide a tray 12. ) Has reached the tray withdrawal reference position.

When the tray 12 reaches the withdrawal reference position, the loading motor 21 is driven so that the tray 12 is further withdrawn to the withdrawal complete position (step 130). The withdrawal completion position is set above a moving distance at which the interference switch 15 is released from interference of the interference member of the tray 12, and the withdrawal completion position is typically inadvertently in the process of mounting a disc on the tray by the user. When the tray 12 is moved finely, the interference member 14 of the tray 12 is set above the extraction reference position from the housing 13 so as not to interfere with the interference switch 15. In FIG. 4, the loading motor 21 moves one cycle (see FIG. 4) to move the tray 12 from the tray interference switch 15 to the withdrawal completion position on the basis of the time when the high level signal due to the interference of the interference member 14 is generated. t1) shows additional drive.

On the other hand, when the tray 12 is in the withdrawal completion position, when the tray entry / exit operation switch 11 is operated or the tray 12 is moved from the withdrawal completion position to the withdrawal reference position by the user's operation, the tray retracting mode is performed. do.

The control unit 20 performs a tray retracting mode when a signal is generated from the interference switch 15 by moving the entry / exit operation switch 11 or the tray 12 by an external force while the tray 12 is withdrawn to the withdrawal completion position. do.

In the present invention, a process of performing the tray retracting mode when a signal is generated from the interference switch 15 by the movement of the tray by external force will be described.

First, when the tray 12 is moved in the housing direction, the interference member 14 interferes with the interference switch 15, and as shown in FIG. 5, when a high level signal is input from the tray interference switch 15, the control unit 20. Is determined as the retraction mode, and starts a time count (step 140).

If it is determined that the time counted in step 150 reaches the set delay time, the loading motor 21 is driven to rotate the loading motor 21 in the opposite direction to the withdrawal mode (step 160). The delay time may be set by the user in the correct position of the tray 12 even when the tray 12 is inadvertently pushed toward the housing 13 while the interference switch 15 is operated in the process of loading the disk. It is set to about 400 to 700 milliseconds, preferably about 500 milliseconds, to give a time margin. Step 160 is performed until the tray 12 is completely drawn into the housing.

As described above, according to the tray entry / exit control method of the disc player according to the present invention, even when the tray is inadvertently moved in the process of mounting the disc to the tray, the tray can be suppressed from being pulled in, The disk loading error can be suppressed by driving the tray to be pulled in after the set delay time even after the withdrawal reference position is reached in the process of pulling in.

Claims (3)

Interference with the interference member on the tray that is installed in and out of the housing by the rotation of the loading motor, the interference member provided on the tray, and the withdrawal position of the tray on which the disk can be mounted on the tray outside the housing. A control unit for controlling the driving of the loading motor by using an interference switch provided on the housing so as to generate a drawing reference position signal, the drawing reference position signal generated from the interference switch, and an input / output signal of the tray; In the tray entry and exit control method of the disc player having a tray entry and exit operation switch that can be output to the loading motor control unit, end. A first tray drawout step of driving the loading motor until the tray reaches a draw reference position where an interference member of the tray interferes with the interference switch when a tray drawout signal is input from the tray drawout operation switch; I. When the interference member of the tray reaches the interference switch and the extraction reference position signal is generated, driving the loading motor so that the tray is further drawn out to the extraction completion position so that the interference between the interference member and the interference switch is released. And a second tray withdrawing step, wherein the withdrawal completion position is set above a moving distance at which the interference switch is released from interference of the interference member of the tray, and when the user inadvertently moves the tray in the process of mounting a disc. A tray player input / output control method for a disc player, characterized in that the interference member of the tray is set above the drawing reference position from the housing so as not to interfere with the interference switch. The method of claim 1, All. Determining whether the tray has retracted from the withdrawal completed position to the withdrawal reference position by external force; la. Counting time when the tray is determined to have reached the drawing reference position in the multi-step; hemp. And a tray retracting step of driving the loading motor such that the tray is retracted into the housing when the time counted in the step LA reaches a set delay time. The method of claim 2, wherein the delay time is set at about 400 to 700 milliseconds.

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