JPS63244460A - Information processor - Google Patents

Abstract

PURPOSE:To easily remove the dust stuck onto an information recording medium by operating a cleaning means after the information recording medium is loaded to a driving means and releasing the operation of the cleaning means when the information recording medium reaches a prescribed frequency of rotations by the drive of the driving means. CONSTITUTION:The titled device is provided with a driving means 15 driving the information recording medium, a read means to read the information stored on the information recording medium 11 driven by the driving means 15, cleaning means 41, 47, 53, 57, 61 to clean the dust stuck on the surface of the information recording medium 11 to make the reading of the read means accurate and the control means controlling the cleaning operation of the cleaning means. The control means operates the cleaning means 41, 47, 53, 57, 61 after the information recording means 11 is loaded to the driving means 15 to clean the dust stuck on the surface of the information recording medium. When the information recording medium 11 reaches the prescribed frequency of rotations by the drive of the driving means 15, the operations of the cleaning means 41, 47, 53, 57, 61 are released.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to an information processing device, and more particularly, to an information processing device that optically reads information using an optical disk, for example.

(Prior Art) In recent years, optical disk devices have been developed that read document data and image information from, for example, optical disks that store large amounts of such data and information. In the original disc Ai U, a frequency-modulated information signal is stored in the information storage layer in the form of rectangular small holes (bits), and this information A transparent substrate is laminated on the storage layer. Such optical discs are housed in cassettes to prevent a large amount of dust from adhering to the substrate of the optical disc, or from being directly touched by hands and dirt from the hands.

An optical disk device includes a rotary drive unit that exposes such an optical disk from a cassette and drives it to rotate, and a laser beam that focuses the information storage layer and irradiates the laser beam from an optical head to the reflected or transmitted light. An optical head for reading information is provided. This mechanism section is housed in a box-shaped housing, and an opening for inserting or removing a cassette is formed in the front of the housing. A shutter is attached to the opening, and this shutter is opened except when inserting or removing the cassette to prevent dust and the like from entering the inside of the casing.

Incidentally, since the optical head of an optical disk device irradiates laser light with the information storage layer of the optical disk as the focal point, even if a small amount of dust adheres to the surface of the substrate, this dust has little effect on the information reading performance.

However, when an optical disk device is used for many years, dust enters through the frontage when the shutter is opened or the gap between the opening and the shutter and enters the mechanism.

On the other hand, when an optical disk is used, the mechanical part into which dust has entered is exposed from the current, so there is a risk that this dust will adhere to the substrate and accumulate in a large amount in some areas. Further, even if the optical disk is housed in a cassette, there is a risk that after many years of use, AT may enter through the gap in the current and adhere to the substrate, resulting in a large amount in some areas.

In this way, if you insert an optical disc with a lot of dust attached to it into an optical disc device and use it, it will cause a lot of damage! The laser light emitted from the optical head is affected by the dust.

However, conventional optical disc devices do not have a mechanism to remove large amounts of dust attached to the optical disc, and the problem is that the irradiated laser light is affected and information cannot be read accurately. There is.

(Problems to be Solved by the Invention) As mentioned above, conventional information processing devices are not equipped with a mechanism to remove dust attached to an information storage medium, and information may not be read accurately18. be.

In addition, if the information processing unit 5A does not have a mechanism for removing dust as described above, it is possible to disassemble the cassette in which this information storage medium is stored, take out the information storage medium stored in it, and use it. You will have to wipe off the dust that has adhered to it with something like record cleaner.

The present invention has been made in view of the above problem, and an object of the present invention is to provide an information processing device that can easily remove dust attached to an information storage medium.

[Structure of the Invention] (Means for Solving the Problems) In order to achieve the above object, the present invention provides a rotation drive means for rotating an information storage medium, and an information storage medium rotated by the drive of the rotation drive means. a reading means for reading information stored in the information storage medium; an h1 removal means for removing dust adhering to the surface of the information storage medium in order to accurately read information by the reading means; and control means for controlling the cleaning operation, and the control means operates the 11 dividing means after the information storage medium is mounted on the rotational drive means, so that the information storage medium is driven by the rotational drive means to a predetermined level. The configuration is such that when the rotational speed is reached, the operation of the +iff recording means is released.

(Function) In the above configuration, the control means operates the cleaning means to clean dust attached to the surface of the information storage medium after the information storage medium is mounted on the rotation drive means. Thereafter, when the information storage medium reaches a predetermined number of rotations by driving the rotational drive means, the cleaning means is deactivated.

(Example) Examples of the present invention will be described in detail below based on the drawings.

1 to 3 show an optical disk device as an information processing device according to an embodiment of the present invention. here,
Fig. 1 is an overall perspective view of the device and the optical disk used in this device, Fig. 2 is a side sectional view without showing the main mechanism of the device, and Fig. 3 is a sectional view taken along the line ■-■ of Fig. 2. .

In FIG. 1, an optical disk device 1 has an opening 7 formed on the front surface of a casing 3 through which a cassette 5 can be inserted into or taken out from the casing 3. As shown in FIG. A shutter 9 is attached to the opening 7, and the shutter 9 is closed except when the cassette 5 is inserted or removed to prevent dust and the like from entering the inside of the housing 3.

A disc-shaped optical disc 11 is housed in the cassette 5 as an information storage medium. The optical disc 11 has a pit with a diameter of about 0.8 μm formed on its information storage layer, and a substrate made of tempered glass or the like is laminated on the surface of the information storage layer.

For example, the cartridge 5 is inserted into a first storage section 13 and a second storage section 1 from its center in the direction of insertion into the optical disk device 1.
It can be divided into 5 parts.

When the optical disc 11 is used, the cassette 5 is divided and the central portion of the optical disc 11 is exposed in the diametrical direction. Further, when the optical disc 11 is not in use, a locking mechanism (not shown) operates to prevent the cassette 5 from being divided and to prevent dust from being deposited on the surface of the optical disc 11.

Inside the housing 3, a flat base 17 is disposed against the bottom surface of the housing 3. The base 17 is anti-vibration supported on the bottom surface of the housing 3 by anti-vibration legs 19 made of an elastic material such as rubber. Therefore, even if the housing 3 is vibrated in the plane direction of the bottom surface or in a direction perpendicular to this plane direction, the vibration is absorbed by the vibration isolating legs 1.
It is possible to suppress the absorption of water and transmission to the base 17.

A feeder (not shown) is provided on the base 17 and is rotatable about a rotation axis (not shown). The feeder has a cassette inserted through the opening 7 into the housing 3.
A pair of upper and lower rollers 21a, 2 to be transported inside
A plurality of 1b are arranged in order from the front to the rear. The rollers 21a and 21b are configured to be driven to rotate in forward and reverse directions by a motor of a loading mechanism (not shown).

The feeder also has a cassette 5 which has reached a predetermined position shown in FIGS. 2 and 3 by rollers 21a and 21b.
A fixing device for fixing the cassette 5 and a dividing device for releasing the locking mechanism of the cassette 5 and dividing the cassette 5 into a first storage section 13 and a second storage section 15 (both not shown) are also attached. As a result, the central portion of the optical disc 11 is exposed from the cassette 5 in the diametrical direction.

The base 17 is provided with a turntable 23 on which the optical disc 11 is placed, and a spindle motor 25 as a rotation drive means for rotating the turntable 23. The spindle motor 25 is attached to the base 17
The motor mounting frame 26 is fixed to the motor mounting frame 26. On the other hand, a clamper 27 is provided in the feeder at a position above the cutlets i to 5 and facing the turntable 23.

The feeder is rotated upward when inserting and removing the cassette 5, but when the cassette 5 reaches the predetermined position, the clamper 27 is rotated in a direction to hold the optical disk 11 in a compressed manner. As a result, the central portion of the optical disc 11 is held between the turntable 23 and the clamper 27.

A cylindrical support 29 is erected on the base 17, and when the optical disc 11 is held, the cassette 5 is mounted on the support 29.
It is supported by 9. Therefore, the optical disc 11 does not come into contact with the inner wall of the cassette 5.

As shown in FIG. 3, the bottom side of the optical disk 11 placed on the turntable 23 and the base 17 are located on the left side (the upper side in FIG. 3) when viewed from the direction in which the optical disk 11 is inserted. ) is provided with an optical head 31 (reading means). The optical head 31 is configured to irradiate a laser beam onto the lower surface of the optical disc 11 and receive the reflected light.

The optical head 31 is fixed to a slider 33, and the slider 33 is slidably mounted on a pair of shafts 35. It extends parallel to.

The slider 33 is provided on the base 17 or attached to a near motor 37, and is configured to reciprocate along the shaft 35 when driven by the linear motor 37. Thereby, the stored information on the lower surface of the optical disk 11 that is rotated by the drive of the spindle motor 25 can be read. Further, the optical head 31 is equipped with a focusing mechanism, a tracking mechanism 1a, etc. for accurately reading information on the optical disc 11.

A cleaner 39 as a wiping member is provided on the base 17 on the lower surface side of the optical disc 11 on the right side (lower side in FIG. 3) when viewed from the insertion direction of the optical disc 11. The cleaner 39 is, for example, a substantially rectangular prism-shaped sponge covered with felt, and its longitudinal dimension (in the vertical direction in FIG. 3) is approximately the same as the radial dimension in which the information storage layer is formed on the optical disc 11. They have the same dimensions.

The three cleaners are configured such that their top surfaces can come into contact with and separate from the bottom surface of the optical disk 11. That is, cleaner 3
Reference numeral 9 is attached to the tip of a rotatable lever 41 having a curved cross section, and the lever 41 rotates about a rotary shaft 43. The rotation shaft 43 is supported by a bearing 45,
The bearing 45 is fixed on the base 17 with screws or the like. As a result, the rotary lever 41 rotates with respect to the base 17 from the contact state with the optical disc 11 shown by the solid line to the non-contact state as shown by the imaginary line, and the top surface of the cleaner 35 is rotated to the non-contact state with respect to the optical disc 11 as shown by the solid line.
The disjunctive number is on the bottom surface of 1.

On the base 17, there is a bearing 4 on the lower side of the optical disk 11.
5J: A solenoid 47 is provided on the back side of the Sr body 3 (on the right side in FIG. 2). The solenoid 47 is a movable iron core 49
A bottle 51 is provided at the tip of the movable iron core 49. A compression spring 53 is compressed between the solenoid 47 and the bottle 51, and the pressure II δ spring 53 biases the movable iron core 49 toward the rotation lever 41 from the solenoid 47.

A first tension spring 57 is stretched between the base end 55 of the rotating lever 41 and the movable iron core 49. Also,
The base 17 is provided with a locking portion 49 on the front side of the housing 3 (on the left side in FIG. 2) from the bearing 45, and a second A tension spring 61 is tensioned.

The tensile forces of the first and second tension springs 57 and 61 are approximately equal, so in the natural state, the pivot lever 41 is pivoted to the position shown by the imaginary line in FIG. maintains a non-contact state with respect to the optical disc 11.

On the other hand, when current is applied to the solenoid 47, the solenoid 47
is excited, and the movable iron core 49 is attracted to the solenoid 47 against the biasing forces of the compression spring 53 and the second tension spring 61.

As a result, the rotating lever 41 is rotated by the first tension spring 57 in the direction of 1 in FIG.

Note that the first tension spring 57 contributes (does) to the cleaner 39 gently coming into contact with the optical disc 11 by its tensile force.

Rotating lever 41 as described above. The solenoid 47 and the springs 53, 57, 61, etc. constitute a separation driving means. The separation drive means and the cleaner 39 constitute a cleaning means.

The optical disk device 1 includes a control means 401 that controls the operation of such a cleaning means. This control means 401 includes, for example, CPt as shown in FIG.
J403. Memory 405. Placement detection sensor as first detection means/1-06. I10 port 407. A rotation speed detection sensor 408 as a second detection means. It is composed of a morph control circuit 409 for the loading mechanism, a control circuit 411 for the spindle motor 25, and a tluid driver 413.

The memory 405 is composed of, for example, a ROM, and the placement detection sensor 406 and rotation speed detection sensor 408 are programmed in advance as a series of sequence commands.

The placement detection sensor 406 detects when the optical disc 11 is placed on the turntable 23, for example.
When the optical disc 11 is clamped between the clamper 27 and the clamper 27, a signal is output.

Further, the rotation speed detection sensor 4.08 is configured to detect the rotation speed of the optical disc 11 and output a signal. One conceivable example of this configuration is to provide a slit at the edge of the turntable 23, irradiate the slit with a laser beam, and detect the rotational speed by reading the reflected digital light.

The CPU 403 takes in necessary external data from the input port according to sequence commands from the memory 405, performs arithmetic processing while exchanging data between the memory/105, and uses the processed data as necessary. Output 1° to the output boat as a sequence command. That is, the motor 415 of the loading mechanism is connected to the motor control circuit 409, the spindle motor 25 is connected to the spindle motor control circuit 411, and the solenoid 47 is connected to the solenoid driver 413.

By sequentially executing these sequence commands, when the cassette 5 is inserted into the optical disk device 1 through the opening 7, sequence control is performed to clean dust attached to the optical disk 11. Further, such sequence control is executed based on, for example, the 70-diameter shown in FIG.

Next, the operation of the optical disk device 1 having the above structure will be explained based on the graph shown in FIG.

- In the structure described above, insert the cassette 5 into the I? of the housing 3. iJ[
When the first copy 7 is inserted into the optical disk device 1, step S
1 to step S3, the cassette 5 is transported inside by the feeder mechanism and fixed at a predetermined position by a locking device. At that moment, the cassette 5 is divided by the dividing device, and the central portion of the optical disc 11 is exposed in the diametrical direction. Thereafter, in step S5, the loading mechanism places the optical disc 11 on the turntable 23, and in step S7, the optical disc 11 is placed on the turntable 23.
If it is determined that it is placed on top of the
The clamp mechanism is activated at v, and the optical disc 11 is clamped between the turntable 23 and the clamper 27.

Thereafter, in step 11, the optical disc 11 is rotated by the spindle motor 25 while avoiding the rotation of the turntable 23. At this time, the control means controls this spindle motor 2.
5 rotates, the solenoid 47 is energized in step 813 to bring the cleaner 39 into contact with the lower surface of the optical disk 11. The cleaner 39 in contact with the lower surface of the optical disk 11 wipes the entire circumference of the lower surface of the optical disk 11, thereby easily wiping off dust.

At this time, when the cleaner 39 comes into contact with the optical disc 11, it comes into contact gently due to the biasing force of the second tension spring 61, so that it is possible to suppress scratches and the like from occurring on the optical disc 11 due to the contact of the creep 39.

Next, in step S15, the spindle motor 25
It is determined whether or not the optical disk 11 has reached a predetermined rotation speed at which the optical head 31 can read the optical disk 11 due to the drive of the solenoid 47. Cut off the electricity.

By driving the linear motor 37, the optical head 31 moves along the shaft 35 in the radial direction of the optical disk 11 from which dust has been wiped off, and illuminates the laser beam.
・The stored information is read by receiving the reflected light. Therefore, the laser light emitted from the optical head 31 is not affected by dust, and information can be read accurately.

In step S17, the current of the solenoid 47 is cut off, but the biasing force of the compression spring 53 and the second tension spring 61 allows the current to be turned off. The II iron core 49 is pushed out to the left in FIG. 2, and the rotating lever 41 is rotated counterclockwise in FIG. 2 via the first tension spring 57. As a result, the rotary lever 41 returns to the original position shown by the imaginary line, and the crease 39 separates from the surface of the optical disc 11.

Therefore, since the cleaner 39 comes into contact with the optical disk 11 only when necessary, the optical disk 11 is brought into contact with the cleaner 39 by sliding contact.
wear can be suppressed.

As described above, in this embodiment, the cleaner 39 wipes the surface of the optical disk 11 while the optical disk 11 is placed on the turntable 23'' and held between the clampers 27. Thereafter, when the rotational speed of the optical disk 11 reaches a rotational speed at which reading can be performed by the optical head 31, the wiping operation by the cleaner 39 is canceled.

Therefore, the solenoid 47 is energized and the cleaner 39 wipes the optical disk 11 using the rise time until the optical head 31 can read the optical disk device 1, so that the cleaning operation by the cleaner 39 is mechanically effective. Electrically, the impact on reading performance is small. Moreover, once the rotational speed reaches a speed at which reading can be performed by the optical head 31, there is no dust on the surface of the optical disc 11, so that subsequent reading of the optical disc 11 can always be performed in a clean state.

FIG. 6 shows another embodiment of the optical disk device 1 according to the present invention. Note that the same parts as in the previous embodiment are given the same reference numerals. In this embodiment, the dust adhering to the optical disc 11 is sucked out by a nozzle 69 as km removal means. That is, on the lower surface side of the optical disc 11 placed on the turntable 23, the opening of the nozzle 69 is arranged facing toward the lower surface of the optical disc 11, and this opening has an elongated shape along the radial direction. and
Moreover, its length is the same as the width of the information storage layer of the optical disc 1.

Further, the nozzle 69 is connected to a hollow tube 71 provided on the base 17.
A sweeping noan 73 is provided at the upstream end of the hollow tube 71.

When the shaking fan 73 is rotated, the dust adhering to the bottom surface of the optical disc 11 is sucked up by the nozzle 69.
It passes through the hollow tube 71 and is adsorbed by a filter provided on the fan 73. At this time, the optical disc 11
When it is rotated by the spindle motor 25, all M dust adhering to the lower surface of the optical disk 11 where the information storage layer is provided is sucked off.

In this embodiment as well, the optical disk device 1 rotates the sweeping fan 73 using the rise time when the optical head 31 can read the data, and the absorption nozzle 69 sucks out the dust attached to the optical disk. If it is removed, the cleaning operation by the absorption nozzle 69 is F! 4IrVI has little effect on reading performance both electrically and electrically.

That is, in this invention, when the cassette 5 is inserted into the optical disc device 1, the dust attached to the optical disc 11 is removed.
Since the cassette 5 can be wiped with the cleaner 39 as described above without disassembling the cassette 5, even ordinary users can clean the optical disc 1.
Dust attached to 1 can be easily removed.

It should be noted that the present invention is not limited to the above-mentioned embodiments, and it goes without saying that the predetermined rotational speed at which the cleaning means is deactivated may be set lower than the rotational speed at which the optical head 31 can read. . Further, the present invention can also be applied to a cassette 63 as shown in FIG. 7 as a cullet for storing the optical disc 11. That is, this caret 1 to 63 are
A window 65 is provided to expose both sides of a part of the optical disc 11 (
), and a shutter 67 for opening and closing the window 65 is attached to the window 65, and the window 65 is opened and closed by sliding the shutter 67.

Further, similar effects can be obtained by using other types of wiping members. In this case, for example, a brush-like shape can be considered.

Furthermore, although the optical disk device 1 has been described as an information processing device, the invention is not limited to this, and it is applicable to devices that require removal of M dust attached to the surface of information storage media, such as floppy disks and fixed magnetic disks.

Needless to say, the present invention can also be applied to devices using optical cards, video discs, laser discs, compact discs, etc.

[Effects of the Invention] As explained above, according to the present invention, since the cleaning means removes the dust adhering to the surface of the information storage medium, the reading performance of the reading means is not accurate because the dust does not accumulate in a large amount. can be prevented from becoming.

Moreover, the cleaning means is operated by the control means until the information storage medium reaches a predetermined rotational speed, and then this operation is canceled, so that it is possible to suppress the influence on the reading performance of the reading means and to enable reading. When the rotational speed reaches a certain level, the information storage medium can be read in a clean state with all dust wiped off.

[Brief explanation of the drawing]

1 to 3 show an information processing device according to an embodiment of the present invention, FIG. 1 is an overall perspective view of the information processing device and an information storage medium used in the device, and FIG. A side sectional view showing the main mechanism of the information processing device, Figure 3 is m in Figure 2.
-m sectional view, FIG. 4 is a block diagram showing the configuration of the control means, FIG. 5 is a flowchart for executing the control means (and FIG. 6 is a diagram showing another embodiment). ,
FIG. 7 is a perspective view showing the main cassette that stores the information storage medium. 1... Optical disk device (information processing device) 11... Optical disk (information storage medium) 15... Spindle (rotation drive means) 31... Optical head (reading means) 39... Cleaner (Wipe member) Procedural City Official Book (Method) July 1986 Day

Claims (4)

[Claims] (1) A rotation drive means for rotating an information storage medium, a cleaning means for cleaning dust adhering to the surface of the information storage medium rotated by the drive of the rotation drive means, and the information storage medium is connected to the rotation drive means. An information processing device comprising: a control means for activating the cleaning means after the information storage medium is mounted, and for deactivating the cleaning means when the information storage medium reaches a predetermined rotational speed by driving the rotational drive means. . (2) The control means includes a first detection means for detecting that the information storage medium is attached to the rotation drive means, and a second detection means for detecting the number of rotations of the information storage medium. An information processing device according to claim 1, characterized in that: (3) The cleaning means includes a wiping member that is provided so as to be able to come into contact with the surface of the information storage medium and wipes the surface, and a wiping member that brings the wiping member into and out of contact with the surface of the information storage medium. An information processing apparatus according to claim 1 or 2, characterized in that the information processing apparatus comprises a driving means. (4) The information processing apparatus according to claim 1 or 2, wherein the cleaning means comprises a suction member that sucks dust adhering to the surface of the information storage medium.