KR100201312B1 - Double loading protection device for optical disc player - Google Patents

Abstract

The present invention relates to a disc double mounting prevention device of an optical disc player, and more particularly, to a disc double mounting prevention device of an optical disc player capable of mounting laser discs and compact discs of different sizes on an optical disc seating surface formed concentrically on an upper surface of a tray. And a sensor configured to face the compact disk and the laser disk information surface seated at a predetermined position of the tray, and to detect whether the disk is seated on the compact disk seating surface and the laser disk seating surface when the tray is loaded. And a control unit connected to the respective sensors and controlling the driving of the front and rear drive device of the tray by the sensor which detects the disc when the disk is coaxially mounted on the optical disc seating surface of the tray. Of the optical disc player Provides a disk double mounting prevention device.

Description

Disk double mounting prevention device of optical disc player

The present invention relates to an apparatus for preventing double mounting of an optical disc player, and more particularly, to coaxially align a laser disc (LCD) with a compact disc (CD) seated on a tray seating surface of a laser disc player (LDP). The present invention relates to a disc double mounting prevention device of an optical disc player, which detects the loading of a deck and mounts it onto the deck, thereby disconnecting the CD function of the optical disc player and preventing the optical disc from being mounted twice.

An optical disc player records digital signals in a concave-convex shape on a disc, and then projects a light having high condensing power, such as a laser beam, onto the surface of the disc, receives the reflected light, and reproduces the recorded signal according to the difference in the amount of light. to be.

As schematically shown in FIG. 1, a deck used in a general disc player is an optical disc in which an unshown tray accommodating at least one or more optical discs on the same plane is selected and loaded by driving the front-back drive. The turntable 1 for chucking is rotatably mounted by driving the spindle motor 3 mounted on the deck 2, and the optical pick-up 5 including the objective lens 4 on one side of the turntable 1 includes the turntable 1. It is mounted to be movable in the radial direction of the optical disk seated on the top, wherein the rotational force of the drive motor (6) mounted on the deck (2) to move the optical pickup (5) is decelerated while passing through several gear (7) Then, as it is transmitted to the rack gear (8) formed integrally with the optical pickup 5 is converted into a linear motion to reciprocate the optical pickup 5 along the guide rod (9) formed on the deck (2).

As shown schematically in FIG. 2, the tray structure of the optical disc player according to the related art is a drive device in which a roulette R for accommodating at least one CD A is not shown on the bottom surface of the tray 10. The optical disk seating surfaces 11 and 12 are rotatably mounted in a forward and reverse direction by the drive, and are formed concentrically on the upper surface of the tray 10 to accommodate LDs (B) having different sizes, and the optical disk seating surfaces 11 and 12. A cutout 13 through which the light through the objective lens 4 mounted to the deck 2 in the radial direction thereof and the turntable 1 can be cut out.

Reference numerals 14 and 15 are rubbers that prevent scratching of the information surface when the LD (B) is seated on the optical disk seating surfaces 11 and 12.

However, as schematically shown in FIG. 3, the CD 10 is seated in the roulette R, and the tray 10 is inadvertently handled by the user while the CD 10 is placed in the correct position of the tray 10 by driving the drive. When the LD (B) is seated on the optical disk seating surface 11 again and then loaded to the deck 2 side by the drive of the front and rear drive of the tray 10, the device is mounted on the tray 10 with the optical disk A ( B) does not detect the double mounting so that the CD (A) of the roulette R and the LD (B) of the tray 10 are simultaneously seated on the turntable 1 of the deck 2, and then the chuck 16 Since the optical disks (A) and (B) are excessively mounted on the turntable (1) because they are chucked by the play operation, the problem that causes deformation of the optical disks (A) and (B), and an operation error in the device There is a problem that occurs.

Accordingly, an object of the present invention is to prevent an optical disk (CD) LD from being duplicated on a turntable by preventing the CD and LD from being loaded to the deck side in a state where the CD and LD are dually mounted on the optical disk seating surface of the tray of the laser disk player. It is to provide a disc double mounting prevention device of an optical disc player to prevent chucking.

1 is a perspective view of the main portion of the deck of a typical optical disc player.

2 is a plan view of a tray of an optical disc player according to the prior art.

Figure 3 is a schematic cross-sectional view showing that the optical disk is mounted dually in the conventional tray.

4 is a plan view of a tray of an optical disc player according to the present invention;

5 (a) to 5 (d) are schematic use state diagrams of a disc double mounting preventing apparatus of the optical disc player according to the present invention;

Explanation of symbols on the main parts of the drawings

1: turntable

2: deck

4 ; Objective

5: optical pickup

10 tray

11,12,20: optical disk seating surface

13: incision

16: Chuck

21,22: through hole

23, 24: sensor

25: control unit

A: Compact Disc (CD)

B: Laser Disc (LD)

An object of the present invention described above is a double mounting preventing device for an optical disk player capable of mounting a laser disk and a compact disk of different sizes on an optical disk seating surface formed concentrically on an upper surface of a tray, the compact being seated at a predetermined position of the tray. It is formed to face the disk and the laser disk information surface, the sensor for detecting the presence of the disk on the compact disk seating surface and the laser disk seating surface when loading the tray, and connected to each sensor and the optical disk of the tray A disc is mounted coaxially on a seating surface, and the sensor is configured to provide a control unit for controlling the drive unit of the tray forward and backward by the sensor for detecting it. do

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

4 is a plan view of a tray of an optical disc player according to the present invention, and FIGS. 5A to 5D are diagrams showing the use state of the tray according to the present invention.

As shown in the figure, the optical disk seating surface 20 for mounting CD (A) and the optical disk seating surface 11, 12 for mounting LD (B) are formed on the upper surface of the tray 10, and the optical disk seating surface 11 is shown. A cutout 13 through which the light and the turntable 1 pass through the objective lens 4 mounted on the deck 2 in the radial direction of the 12 and 20 is cut out, and the optical disc seating surface ( 11) 12, the configuration of the rubber 14, 15 formed to prevent scratching of the information surface upon mounting the LD (B) is the same as that shown in Figure 2, so a detailed description thereof will be omitted.

Therefore, according to a preferred embodiment of the present invention, the optical disk mounting surfaces 12, 20 of the tray 10 described above are formed by punching through-holes 21 and 22 for passing optical signals, respectively, Sensors comprising a light emitting part and a light receiving part for detecting the presence or absence of the LD (B) seated on the optical disk seating surface 12 and the CD (A) seated on the optical disk seating surface 20 in the balls 21 and 22 ( 23, 24 is mounted, the sensor (23) for detecting this when the LD (B) and CD (A) is coaxially seated on the optical disk seating surface (12, 20) described above and loaded to the deck (2) side The control unit (microcomb) 25 which opens the tray 10 by controlling the drive of the front-rear drive device of the tray 10 by the optical signal output from the head 24 is used as a sensor 23 and a cable. Connected.

Referring to the method of using the disc double mounting prevention device of the optical disk player according to the present invention configured as described above, LD (B) or CD (A) to the optical disk seating surface (12) 20 of the tray 10 described above. As the tray 10 is selectively settled and then moved to the deck 2 side by driving its not shown front and rear drive, LD (B) or CD (s) selected and mounted on the optical disc seating surfaces 12 and 20 ( A) is seated on the turntable 1 of the deck 2 and chucked by a chuck not shown, and rotates at a predetermined speed by driving the spindle motor 3.

Therefore, as the optical pickup 5 moves in the radial direction of the LD (B) or the CD (A) by driving the drive motor 6, light through the objective lens 4 is irradiated onto the disc information surface, so that predetermined reproduction is achieved. This would be possible.

At this time, FIG. 5 (a) illustrates a case in which CD (A) or LD (B) is not seated on the optical disk seating surfaces 12 and 20 of the tray 10. When the optical disc seating surface 12, 20 of the tray 10 is loaded to the deck 2, light emitted from the sensors 23 and 24 driven and mounted at a predetermined position is formed in the tray 10. 21 and 22, the control unit 25 connected to the sensors 21 and 22 detects that the optical disc A or B is not seated on the tray 10 loaded to the deck 2. do.

On the other hand, as shown in FIG. 5 (b), the light by the sensor 23 formed on the optical disk seating surface 12 of the tray 10 loaded to the deck 2 side is the through-hole 21 of the tray 10 By passing through) it will be recognized that the control unit 25 connected to the sensor 23 does not seat the LD (B) on the tray 10. On the other hand, since the light reflected by the sensor 24 formed on the optical disk seating surface 20 of the tray 10 is reflected by the CD (A) on which the tray is seated, the tray is controlled by the control unit 25 connected to the sensor 24. It is recognized that only CD (A) is seated at (10).

As shown in FIG. 5 (c), light by the sensor 23 formed on the optical disk seating surface 12 of the tray 10 is reflected by the LD (B) on which it is seated, and on the optical disk seating surface 20. Since the light by the formed sensor 24 is diffusely reflected by the label surface B1 of the LD (B), the control unit 25 connected to the sensors 23 and 24 for detecting the LD is disposed on the tray 10. It is recognized that only CD is seated, while CD (A) is not seated.

On the other hand, as shown in Figure 5 (d), LD (B) is seated on the optical disk seating surface 12 of the tray 10 and at the same time CD (A) is seated coaxially to the optical disk seating surface (20) In this state, the tray 10 is loaded to the deck 2 side by the drive of the forward and backward drive device. At this time, the light emitted by the sensor 23 formed on the optical disk seating surface 12 of the tray 10 is reflected by the LD (B) on which it is seated, and by the sensor 24 formed on the optical disk seating surface 20. The emitted light is also reflected by the seated CD (A). As a result, the control unit 25 connected to the sensors 23 and 24 recognizes a state in which the LD (B) and the CD (A) are coaxially mounted in the tray 10 in a double manner.

Accordingly, as the tray 10 is opened by controlling the driving of the tray 1 forward and backward driving device and then opening the tray 10, the user can insert the CD (A) and LD ( You can reconfirm that B) is installed in double at the same time.

As described above, the disc double mounting prevention device of the optical disc player according to the present invention is mounted on the tray of a laser disc player capable of mounting a compact disc in a coaxial coaxial double state, and detects this when loading to the deck side. By opening the system, CD and LD can be prevented from being chucked twice on the turntable to prevent bending of the disk, and simultaneous chucking of the LD and CD on the turntable can prevent the occurrence of device errors during operation. It has an advantage.

Claims (1)

In the disk double mounting prevention device of the optical disk player that can be mounted on the optical disk mounting surface formed concentrically on the upper surface of the tray, laser disks and compact disks of different sizes, A sensor configured to face the compact disc and the laser disc information surface seated at a predetermined position of the tray, and to detect whether the disc is seated on the compact disc seating surface and the laser disk seating surface when the tray is loaded; And a control unit connected to the respective sensors and controlling the driving of the front and rear drive device of the tray by the sensor which detects the disc when the disk is coaxially mounted on the optical disc seating surface of the tray. Double mounting prevention device of an optical disc player.