KR200334475Y1 - Optical disk recoding/reproducing apparatus having tray sensing function - Google Patents

Abstract

Disclosed is an optical recording / reproducing apparatus having a tray sensing function. An optical recording / reproducing apparatus according to the present invention includes a disk detecting section for detecting whether a plurality of optical disks are mounted in a tray. The disk detector comprises a light emitting portion and a light receiving portion, and detects whether or not a plurality of optical disks are mounted on the basis of the light receiving state of light emitted from the light emitting portion. If it is determined that a plurality of optical discs are mounted in the tray, the tray is pulled out of the main body so that the optical recording / reproducing apparatus is not played. Thereby, the problem that the optical disc and the set are damaged by driving the optical recording / reproducing apparatus in a state where a plurality of optical discs are mounted can be prevented.

Description

Optical disk recoding / reproducing apparatus having tray sensing function}

The present invention relates to an optical recording / reproducing apparatus, and more particularly, to an optical recording / reproducing apparatus having a tray sensing function for detecting whether one or more optical discs are mounted in a tray.

An optical recording / reproducing apparatus is a device which records information by irradiating predetermined light onto an optical disc or reads and reproduces information recorded on the optical disc. Such optical recording / reproducing apparatus may include a compact disk player (CDP), a laser disk player (LDP), a digital video player (DVDP), and the like.

In the general optical recording / reproducing apparatus, as shown in FIG. 1, the tray 30 and the tray 30 are installed to allow the optical disk 20 seated in the seating groove 30a to be inserted into and out of the main body 10. An Open / Close key 40 for operating the / draw operation is provided.

When the optical disc 20 is to be played, first, the open / close button 40 is pressed to open the tray 30 to the outside of the main body 10. When the tray 30 is pulled out of the main body 10, the optical disk 20 to be reproduced is seated in the seating groove 30a formed in the tray 30, and then the open / close button 40 is pressed again. Then, the tray 30 is drawn into the main body 10. When the tray 30 is retracted into the main body and closed, a reproducing operation for reproducing the optical disc 20 seated on the tray 30 is performed.

By the way, when one or more optical disks 20 are mounted in the tray 30 due to carelessness of a user and are inserted into the main body 10 and reproduced, noise is generated as a result of friction between the mounted optical disks. Can all be damaged. Seriously, the set itself is broken.

In order to solve the above problems, an object of the present invention is to detect whether a plurality of optical disks are loaded in the tray, and to automatically open the tray when a plurality of optical disks are loaded to prevent damage to the optical disk. An optical recording / reproducing apparatus having a tray detection function is provided.

1 schematically shows a conventional optical recording / reproducing apparatus;

2 is a block diagram of an optical recording / reproducing apparatus having a tray sensing function according to a preferred embodiment of the present invention;

3 is a plan view illustrating a structure according to an embodiment of the disc detection unit shown in FIG. 2;

4 is a plan view illustrating a structure according to another embodiment of the disc detection unit shown in FIG. 2;

5 is a cross-sectional view illustrating a light receiving state of a light receiving unit when one optical disk is mounted on a tray;

6 is a cross-sectional view illustrating a light receiving state of a light receiving unit when one or more optical disks are mounted in a tray.

Explanation of symbols on the main parts of the drawings

100: optical recording / reproducing apparatus 110: key control unit

112: open / close key 140: tray

150: tray drive unit 160: disk detection unit

162: light emitting unit 164: light receiving unit

170: control unit

In order to solve the above technical problem, the optical recording / reproducing apparatus having a tray detection function according to the present invention, the main body, and the insertion and withdrawal in the main body is installed, the optical disk is any of the loading position and discharge position A tray for moving to one, a tray driving unit for driving the tray, and a state in which the optical disc is irradiated with light in the state where the optical disc is in the loading position and based on a light receiving state of the irradiated light, If it is determined that there are a plurality of loaded optical discs based on the disc detection unit for outputting a signal indicating whether or not and the signal output from the disc detection unit, the tray is withdrawn and the loaded optical disc is placed in the discharge position. A control unit for controlling the driving unit is provided.

The disc detection unit includes a light emitting unit for irradiating the light onto the loaded optical disc to detect whether there are a plurality of loaded optical discs, and a light receiving unit for receiving the light and converting the light into an electrical signal.

The light emitting part and the light receiving part are respectively provided at opposite positions with the loaded optical disc interposed therebetween.

In another embodiment, the light receiving unit is disposed spaced apart from the light emitting unit to receive a predetermined light reflected by the loaded optical disk among the light emitted from the light emitting unit.

The display unit may further include a display unit, and when it is determined that there are a plurality of optical discs loaded, the controller processes to output a message informing that there are a plurality of optical discs loaded through the display unit.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

2 is a block diagram of an optical recording / reproducing apparatus having a tray sensing function according to a preferred embodiment of the present invention. The present invention records and / or writes predetermined information onto an optical disc which is an optical recording medium such as a compact disc player (CDP), a digital video disk player, a DVD recorder, or the like. Applicable to all optical disk devices that can reproduce the information. FIG. 2 illustrates only the blocks related to tray detection in the optical recording / reproducing apparatus 100 for convenience of description.

Referring to FIG. 2, the optical recording / reproducing apparatus 100 includes a key operating unit 110, a display unit 120, a storage unit 130, a tray 140, a tray driver 150, and a disc detector 160. do.

The key operation unit 110 is provided with a plurality of operation keys for setting or operating a function supported by the optical recording / reproducing apparatus 100. Examples of such operation keys include an open / close key 112 for manipulating the in / out operation of the tray 140, a play / stop key for controlling the drive of the optical disc, A power key (not shown) and a volume up / down key are mentioned. The key operation unit 110 outputs a key operation signal according to the user's key operation to the control unit 170.

The display unit 120 is controlled by the controller 170, which will be described later, to display operation state information of the optical recording / reproducing apparatus 100. FIG.

The storage unit 130 includes a ROM in which a control program for controlling various operations of the optical recording / reproducing apparatus 100 is stored, and a RAM temporarily storing various data generated during various operations. do.

The tray 140 is installed in the optical recording / reproducing apparatus 100 so as to be able to enter and exit, thereby moving the optical disk to any one of a loading position and an ejecting position.

The tray driver 150 moves the tray 140 into or out of the optical recording / reproducing apparatus 100 to move the optical disc to a loading position or an ejecting position in response to an open / close key 112 operation signal provided in the key operation unit 110. Draw in and out with.

The disk detection unit 160 is a light emitting unit 162 for irradiating a predetermined light to the optical disk mounted on the tray 140 in a state where the optical disk is in the loading position, and a light receiving unit for receiving the light and converting the light into an electrical signal ( 164). Here, a light emitting diode such as a laser diode may be applied to the light emitting unit 162, and a photo sensor such as a photo diode may be applied to the light receiving unit 164.

As shown in FIG. 3, the light emitting unit 162 and the light receiving unit 164 are in a state where the optical disc 100a is in a loading position, that is, the tray 140 is inserted into the optical recording / reproducing apparatus 100. In this state, the loaded optical disc 100a may be implemented to be disposed at opposite positions, respectively. At this time, the light emitting unit 162 and the light receiving unit 164 are disposed on both sides with the loaded optical disc 100a interposed therebetween, and the optical recording / reproducing corresponding to the position of the optical disc 100a mounted on the tray 140. It is disposed inside the device 100.

Alternatively, as shown in FIG. 4, it may be implemented to be arranged side by side on one side of the tray 140. In this case, the light receiving unit 164 may be disposed to be spaced apart from the light emitting unit 162 by a predetermined distance so as to receive a predetermined light reflected by the optical disk 100a among the light emitted from the light emitting unit 162. Do.

A light receiving state of the light receiving unit 164 when one optical disk 100a is mounted on the tray 140 and when one or more optical disks 100a to 100c are mounted will be described with reference to FIGS. 5 and 6. same.

First, when one optical disk 100a is mounted on the tray 140 as shown in FIG. 5, light emitted from the light emitting unit 162 is transmitted to the light receiving unit 164. In this case, the light emitted from the light emitting portion 162 is likely to be received by the light receiving portion 164. On the contrary, as shown in FIG. 6, when one or more optical disks 100a to 100c are mounted on the tray 140, light emitted from the light emitting unit 162 is reflected by the second mounted optical disk 100b. (Shown by the dotted line), the light receiving portion 164 is not received.

In the light emitting unit 162 and the light receiving unit 164 according to the present invention, as shown in FIGS. 5 and 6, one optical disk is mounted on the tray 140 so as to detect whether there are a plurality of loaded optical disks. It should be installed at a position higher than the thickness of the optical disc when the optical disc is mounted and lower than the thickness of the optical disc when the two optical discs are mounted. This is to implement to determine whether or not light received from the light emitting unit 162 is received by the light receiving unit 164 according to whether a plurality of optical disks are loaded.

The disk detection unit 160 outputs a signal indicating whether or not a plurality of optical disks are loaded on the light receiving unit 164 based on the light receiving state of the light irradiated from the light emitting unit 162. That is, the disk detector 160 outputs a logic low signal or a logic high signal according to the light level received by the light receiver 164. For example, as shown in FIG. 3, when the light emitting unit 162 and the light receiving unit 164 are disposed on both sides with the optical disk 100a loaded therebetween, the disk detection unit 160 may receive the light receiving unit 164. When the light irradiated from the light emitting unit 162 is received, a logic high signal indicating that one disk is mounted on the tray 140 is output. On the contrary, when the light irradiated from the light emitter 162 is not received by the light receiver 164, the disk detector 162 outputs a logic low signal indicating that one or more disks are mounted in the tray 140.

However, as shown in FIG. 4, when the light emitting unit 162 and the light receiving unit 164 are disposed to be spaced apart by a predetermined distance corresponding to one side of the tray 140, one or more disks are mounted in the tray 140. Only when light is received, light is received by the light receiving unit 164. Therefore, when the light emitter 162 and the light receiver 164 are installed as shown in FIG. 4, the disk detector 160 receives the light emitted from the light emitter 162 to the light receiver 164. And output a logic low signal indicating that one or more disks are mounted on the. On the contrary, when the light irradiated from the light emitting unit 162 is not received by the light receiving unit 164, it is preferable to implement a logic high signal indicating that one disk is mounted in the tray 140. Hereinafter, a case in which the light emitter 162 and the light receiver 164 are disposed at both sides with the tray 140 interposed therebetween will be described as an example.

The controller 170 controls the overall operation of the optical recording / reproducing apparatus 100 according to various control programs stored in the storage 130 and key operation signals of the user.

The controller 170 controls the tray driver 150 to draw in and out the tray 140 in and out of the optical recording / reproducing apparatus 100 in response to the open / close key 112 signal applied from the key manipulation unit 110. To control. That is, when the open / close key 112 signal is input through the key operation unit 110, the control unit 170 recognizes the tray 140 as an open request signal and the tray 140 of the optical recording / reproducing apparatus 100. Process to be withdrawn to the outside. In addition, when the open / close key 112 signal is input once more while the tray 140 is opened, the controller 170 recognizes the tray 140 as a close request signal and the tray 140 receives the optical recording / reproducing apparatus. Processing to be drawn into the interior of (100).

When the tray 140 is inserted into the optical recording / reproducing apparatus 100 in response to the close request signal, the disk detecting unit 160 detects whether a plurality of loaded optical disks is present. The controller 170 determines whether there are a plurality of loaded optical discs based on the signals output from the disc detector 160. If it is determined that one or more optical discs are mounted in the tray 140, the controller 170 opens the tray 140 to inform the user that a plurality of optical discs are loaded. On the contrary, if it is determined that one optical disc is mounted in the tray 140, the controller 170 drives the optical disc mounted in the tray 140.

Referring to the tray 140 detection function according to the present invention in more detail, first, the control unit 170 determines whether the tray 140 open request signal is received through the key operation unit 110. When it is determined that the tray 140 open request signal has been received, the controller 170 controls the tray driver 150 to draw the tray 140 out of the optical recording / reproducing apparatus 100. When the tray 140 is pulled out of the optical recording / reproducing apparatus 100 by the tray driver 150, the user mounts an optical disc to be recorded or reproduced in a mounting groove (not shown) formed in the tray 140. When the tray 140 close request signal is received through the key operation unit 110 while the tray 140 is opened, the controller 170 causes the tray 140 to be introduced into the optical recording / reproducing apparatus 100. The tray driver 150 is controlled.

When the tray 140 is inserted into the optical recording / reproducing apparatus 100 by the tray driver 150, the controller 170 detects whether one or more optical disks are mounted in the tray 140. ). The controller 170 determines whether one or more optical discs are mounted in the tray 140 based on the output signal of the disc detector 160. That is, when a logic high signal is applied from the disk detector 160, the controller 170 determines that one optical disk is mounted in the tray 140, and drives the optical disk mounted in the tray 140. Since the driving method of the optical disc mounted on the tray 140 is a well-known technique, detailed description thereof will be omitted.

On the contrary, when a logic low signal is applied from the disc detector 160, the controller 170 determines that one or more optical discs are mounted in the tray 140, and thus controls the tray 140 to the optical recording / reproducing apparatus 100. Withdraw to outside. At this time, the tray 140 may be opened and a message indicating that a plurality of optical disks are mounted on the tray 140 may be output through the display unit 120. The error message may be output through the display unit 120 provided in the main body of the optical recording / reproducing apparatus 100 or alternatively, through an external display device (not shown) such as a television or a monitor.

Although the present invention has been described in detail with reference to the exemplary embodiments above, those skilled in the art to which the present invention pertains can make various modifications without departing from the scope of the present invention with respect to the above-described embodiments. Will understand. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined by the claims below and equivalents thereof.

As described so far, according to the present invention, it is possible to detect whether a plurality of optical discs are loaded in the tray, and if it is determined that the plurality of optical discs are loaded, the tray is automatically opened so that the optical recording / reproducing apparatus is not played. Opening can prevent the optical disc and the set from being damaged. In addition, by outputting a message informing that the plurality of optical disks are loaded through the display device, it is possible to provide convenience for the user and to improve the reliability and life of the product.

Claims (5)

main body; A tray which is installed in the main body so as to be pulled in and out, and which moves the optical disk to any one of a loading position and an ejecting position; A tray driver for driving the tray; A disk detection unit for irradiating light to the optical disk while the optical disk is in the loading position, and outputting a signal indicating whether or not the loaded optical disk is plural, based on a light-receiving state of the irradiated light; And And a controller configured to control the tray driver so that the loaded optical disc is placed at the discharge position when it is determined that there are a plurality of loaded optical discs based on a signal output from the disc detection unit. Recording / Playback Device. The method of claim 1, The disk detection unit, A light emitting unit for irradiating the light onto the loaded optical disc to detect whether there are a plurality of the loaded optical discs; And And a light receiving unit which receives the light, converts the light into an electrical signal, and outputs the light. The method of claim 2, And the light emitting portion and the light receiving portion are respectively installed at opposite positions with the loaded optical disc interposed therebetween. The method of claim 2, And the light receiving unit is arranged to be spaced apart from the light emitting unit to receive a predetermined light reflected by the loaded optical disk among the light emitted from the light emitting unit. The method of claim 2, Further comprising; And if the control unit determines that there are a plurality of loaded optical discs, the control unit outputs a message indicating that there are a plurality of optical discs loaded through the display unit.