JPH06267096A - Optical disc apparatus - Google Patents

Abstract

PURPOSE:To clean the stain on the surface of a lens generated during recording/ reproducing of an optical disc medium accommodated in a cartridge without interrupting the recording/reproducing operation, making it possible to continue the recording/reproducing operation. CONSTITUTION:The apparatus is provided with a loading mechanism 4 for loading/unloading a cartridge 3 to a rectangular parallelepiped casing 1, a spindle motor 5, a carriage mechanism 7 loading an optical head 6 coupled to a driving source 11, and a cleaning mechanism 8 consisting of a motor 15 having a brush 13 mounted at the end thereof and a mounting plate 16 fixing the motor 15 so that a brush 12 is in touch with a lens 10 of the optical head 6. A controlling part 9 is connected to a host device, each mechanical part, driving source 11 and motor 15.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical disk device, and more particularly, it is applied to cleaning dirt on a lens surface of an optical head which emits a laser beam without interrupting work in order to normally record and reproduce information on an optical disk medium. The present invention relates to a possible optical disc device.

[0002]

2. Description of the Related Art Conventionally, an optical disk device of this type has a substantially same outer shape as a cartridge, a brush is connected to a shaft of a built-in motor in accordance with a position of a lens, and a start switch is provided in a drive power circuit of the motor. A cleaner with dry batteries is available.

The optical disk device monitors the error rate of the reproduced signal during the recording / reproducing process of the information of the cartridge, and when an error of a certain value or more occurs, an alarm lamp is displayed and the operator is cleaned of the dirt on the lens surface. The structure prompts the operator to look at the alarm lamp, eject the cartridge that is currently mounted, turn off the power to the optical disk device, mount the cleaner on the optical disk device, and press the start switch for a certain period of time to press the brush. Clean the lens surface by turning. When the cleaning is completed, the cleaner is taken out, the power of the optical disk device is turned on again, and then the cartridge is reattached to continue the recording / reproducing process.

[0004]

In the above-mentioned conventional optical disk device, since it is necessary to turn off the power during the cleaning work of the lens surface, the line with the host system must be cut off and the recording / reproducing work must be interrupted. I have to. In addition, since the finished state of cleaning depends on the time when the operator presses the start switch, the finished state is unstable due to time variations, and when the finished state is insufficient, re-cleaning work must be performed. There was such a problem.

The present invention has been made in order to eliminate the above-mentioned drawbacks of the conventional ones, and an object thereof is to provide an optical disk device capable of cleaning the lens surface without interrupting the work.

[0006]

An optical disk device of the present invention is an optical head having a lens on the surface for recording and reproducing information of an optical disk medium built in a cartridge, and a drive source connected to the optical head to provide vertical drive. And a carriage mechanism on which an optical head and a drive source are mounted.

In another optical disk device according to the present invention, an optical head having a lens for recording and reproducing information on an optical disk medium built in a cartridge on the surface and an optical head mounted at a position out of the area of the cartridge are movable. And a cleaning mechanism provided opposite to the lens at a position where the optical head comes out of the cartridge.

Yet another optical disk device according to the present invention is
An optical head having a lens for recording and reproducing information on an optical disc medium built in a cartridge on the surface, a carriage mechanism having the mounted optical head movably provided, and a brush having a cylindrical shape and radially provided with brushes. And a cleaning mechanism in which a motor for connecting a brush to the shaft is arranged.

Yet another optical disk device according to the present invention is
An optical head having a lens for recording and reproducing information on an optical disk medium built in a cartridge, a drive source, a cleaning mechanism, and a controller connected to the drive source and the cleaning mechanism. .

[0010]

An embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view including a partial cross section of an embodiment of the present invention, and FIG. 2 is a front view including a partial cross section showing an operating state of the embodiment of the present invention. 6A is a diagram showing a state during recording / reproduction, FIG. 9B is a state in which the optical head is lowered, and FIG. 9C is a diagram showing a lens cleaning state. Referring to the drawing, an optical disk device according to an embodiment of the present invention includes a loading mechanism 4 for driving holding, loading, and unloading of a cartridge 3 containing an optical disk medium 2 in a rectangular parallelepiped housing 1, and an optical disk in the cartridge 3. A spindle motor 5 for rotationally driving the medium 2, a carriage mechanism 7 for linearly driving the optical head 6 in the radial direction with respect to the spindle motor 5, and an optical head 6 facing each other above the position where the optical head 6 has come out of the area of the cartridge 3. The cleaning mechanism 8 provided and a control unit 9 are arranged.

The carriage mechanism 7 is connected below the optical head 6 with an optical head 6 having a lens 10 for projecting and receiving a laser beam for recording / reproducing information on / from the optical disc medium 2, and connecting the optical head 6 up and down. A drive source 11 is provided which sets the position for recording / reproducing processing when the vehicle is driven straight ahead and moves up, and the position when waiting and when moving to the cleaning mechanism 8 when descending.

The cleaning mechanism 8 has a motor 15 in which a brush 13 having a cylindrical shape and radially provided with brushes 12 is mounted on a shaft 14 at the tip, and a height at which the tip of the brush 13 comes into contact with the surface of the lens 10 when rising. In addition, a mounting plate 16 for fixing the motor 15 is arranged.

The control unit 9 is connected to a host device (not shown), each mechanical unit, the drive source 11 and the motor 15, and processes a signal for recording / reproducing processing with respect to the optical disk medium 2 so that the optical head unit or the host device can be processed. Forward. It also controls the operations of the load mechanism 4, the spindle motor 5, the carriage mechanism 7, and the cleaning mechanism 8.

Next, the operation of one embodiment of the present invention configured as described above will be described with reference to FIGS. 2 (a), 2 (b) and 2 (c). When the cartridge 3 is loaded into the loading mechanism 4, the loading mechanism 4 operates according to a command from the control unit 9 to lower the cartridge 3 to a height for recording / reproducing processing, and the optical disk medium 2 is mounted on the spindle motor 5. The rotation of the spindle motor 5 is started, and the optical disc medium 2 is held at a predetermined rotation speed. Next, the drive source 11 operates according to a command from the controller 9 to raise the optical head 6 to a height for recording / reproducing processing, and the state shown in FIG. When a request for recording / reproducing processing is issued from the host device in this state, the control unit 9
The carriage mechanism 7, the optical head 6 and the lens 10 are actuated via the path, the recording / reproducing signal is processed, and the recording / reproducing process is executed.

During the recording / reproducing work, if the control section 9 confirms that the error rate of the reproduced signal is abnormal due to dirt on the surface of the lens 10, the recording / reproducing work is interrupted and the cleaning operation is executed.

When the cleaning operation is started, first, as shown in FIG.
As shown in (b), the optical head 6 is driven by driving the drive source 11.
When the carriage mechanism 7 is moved to the position of the cleaning mechanism 8 after being lowered and retracted, the brush 13 starts to rotate by the rotation driving of the motor 15, and the rotation speed for cleaning is maintained. Next, when the optical head 6 is raised for a certain period of time by driving the driving source 11 and the brush 12 cleans the dirt on the surface of the lens 10, the optical head 6 is lowered again, and then the motor 15 is driven. The rotation drive is also stopped. Further, when the carriage mechanism 7 is again moved to the original position and the optical head 6 is lifted, the cleaning operation is ended and the interrupted recording / reproducing work is continued again.

[0018]

As described above, according to the optical disk apparatus of the present invention, when the control section confirms that the lens is dirty during the recording / reproducing operation, the lens cleaning operation is automatically executed, and then the operation is performed again. Since the recording / playback work can be continued, it is not necessary to remove the cartridge during the recording / playback work, the power on / off work is not required, and the operator's intervention and operation for the cleaning work are not required. is there.

Further, since it is not necessary to remove the cartridge and turn on / off the power, it is not necessary to interrupt the operation and operation of the host device, and the recording / reproducing work including cleaning can be automatically continued. And so on.

[Brief description of drawings]

FIG. 1 is a perspective view including a partial cross section of an embodiment of the present invention.

FIG. 2 is a front view including a partial cross section showing an operating state of an embodiment of the present invention, FIG. 2A is a state during recording and reproduction, FIG. 2B is a state in which an optical head is lowered, FIG. 6C is a diagram showing a cleaning state of the lens.

[Explanation of symbols]

 1 Case 2 Optical Disc Medium 3 Cartridge 4 Loading Mechanism 5 Spindle Motor 6 Optical Head 7 Carriage Mechanism 8 Cleaning Mechanism 9 Control Section 10 Lens 11 Drive Source 12 Brush 13 Brush 14 Shaft 15 Motor 16 Mounting Plate

Claims (4)

[Claims] 1. An optical head having a lens for recording and reproducing information on an optical disk medium built in a cartridge, a drive source connected to the optical head for vertically driving, and an optical head and a drive source. An optical disk device having a carriage mechanism. 2. An optical head provided with a lens on the surface for recording / reproducing information of an optical disk medium contained in a cartridge, and a carriage mechanism provided with a movable optical head mounted at a position removed from the area of the cartridge.
An optical disk device, comprising: a cleaning mechanism provided at a position where the optical head is pulled out of the cartridge so as to face the lens. 3. An optical head having a lens on the surface for recording and reproducing information on an optical disk medium contained in a cartridge, a carriage mechanism having the mounted optical head movably provided, and a cylindrical brush radially. An optical disk device comprising: a brush provided with a brush; and a cleaning mechanism having a motor for connecting the brush to a shaft. 4. An optical head having a lens for recording / reproducing information on an optical disk medium built in a cartridge, a drive source, a cleaning mechanism, and a controller connected to the drive source and the cleaning mechanism. An optical disk device characterized by the above.