JPH09259443A - Information processor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an information processor capable of processing information of plural kinds of disks by mounting plural optical heads corresponding to these disks and selectively using these optical heads. SOLUTION: This processor is equipped with a spindle motor 1 for selectively supporting a 1st disk D1 and a 2nd disk D2, the optical head 2 for a DVD to be opposite to the 1st disk D1 when the 1st disk D1 is supported by the spindle motor 1, the optical head 3 for a CD to be opposite to the 2nd disk D2 when the disk D2 is supported by the spindle motor 1 and a withdrawal means for withdrawing the optical head 3 for the CD from a cartridge of the 1st disk D1 supported by spindle motor 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information processing device applied as an optical disk device, for example.

[0002]

2. Description of the Related Art Optical disk devices are equipped with an optical head for recording / reproducing data.
In order to cope with higher recording density, a standard disc with a thin substrate has appeared (hereinafter referred to as a DVD standard disc).

Therefore, an optical disc device has a disc with a normal substrate thickness (hereinafter, referred to as a CD standard disc).
It is required to record / reproduce both the DVD and the DVD standard disc.

However, when the substrate thickness of the disk is different, the specifications of the objective lens of the optical head are different, so it is difficult to correctly read the data of different disks with one type of lens.

Therefore, it is necessary to mount two lenses of different types on the optical head and switch them. Also, C
The CD-R disc, which is a write-once disc among the D standard discs, has an emission wavelength of 6 used in the DVD standard disc.
It exhibits strong absorption for light near 50 nm.

Therefore, even if the read power is supposed to be low optical power, recording is performed on a CD-R disc or the like. Therefore, the emission wavelength of 780n when using a CD-R disc or the like among the CDs of the CD standard
m light source is required.

[0007]

However, if the above-mentioned two matters are incorporated into the optical head, the head becomes very large, and the two-lens actuator and the two-lens actuator are used.
Due to the wavelength (2LD) optical components and the like, not only the cost becomes very high, but also those which are technically sophisticated are required.

Therefore, it is considered to mount a head for DVD and a head for CD respectively so that compatibility can be easily achieved. In this case, since the head for CD is becoming cheaper at present, the total cost can be kept low.

However, when the optical disk device has a two-head structure, the problem is head retraction. That is, this is because the DVD standard disc (RAM) uses the cartridge.

When the cartridge is mounted, the shutter of the cartridge is opened and the window is opened by a method not shown, so that the objective lens actuator of the optical head for the DVD standard enters the window. Therefore,
The cartridge and the optical head for the DVD standard do not interfere with each other.

However, since the CD standard optical head is located at a portion other than the window of the cartridge, it comes into contact with the cartridge and interferes with it. Therefore, the optical head for CD needs to be always retracted only when the DVD-standard disc (RAM) is mounted.

Therefore, according to the present invention, a plurality of optical heads are mounted corresponding to different kinds of disks, and by selectively using the optical heads, information processing of a plurality of kinds of disks is possible. It is an object of the present invention to provide an information processing apparatus capable of preventing the interference between the cartridge and the optical head, and also preventing the interference with a simple structure.

[0013]

In order to solve the above-mentioned problems, the present invention provides a first information storage medium housed in a cartridge, or an exposed first information storage medium not housed in the cartridge. Supporting means for selectively supporting the second information storage medium, a first optical head facing the first information storage medium when the first information storage medium is supported by the supporting means, and A second optical head facing the second information storage medium when the second information storage medium is supported by the support means, and a first optical head that supports the second optical head by the support means. And an evacuation unit for retracting the information storage medium to a position where it does not interfere with the cartridge.

According to a second aspect of the present invention, there is provided a supporting means for selectively supporting the first information storage medium housed in the cartridge or the exposed second information storage medium not housed in the cartridge, and the supporting means. A first optical head facing the first information storage medium when the first information storage medium is supported by the support means, and the second optical head facing the first information storage medium.
A second optical head that faces the second information storage medium when the second information storage medium is supported, and a cartridge for the first information storage medium that supports the second optical head by the supporting means. And a retracting unit that is retracted in advance to a position that does not interfere with the second information storage medium and is moved from the retracted position to a position facing the second information storage medium when the second information storage medium is supported by the supporting unit. To do.

According to a third aspect of the present invention, there is provided a supporting means for selectively supporting the first information storage medium housed in the cartridge or the exposed second information storage medium not housed in the cartridge, and the supporting means. A first optical head facing the first information storage medium when the first information storage medium is supported by the support means, and the second optical head facing the first information storage medium.
When the first information storage medium is supported by the second information storage medium, the second optical head facing the second information storage medium, and the second optical head supported by the supporting means. A retracting means for retracting the cartridge to a position where it does not interfere with the cartridge and for moving the second information storage medium to a position facing the second information storage medium when the second information storage medium is supported by the supporting means. To have.

According to a fourth aspect of the present invention, there is provided a supporting means for selectively supporting the first information storage medium housed in the cartridge or the exposed second information storage medium not housed in the cartridge, and the supporting means. A first optical head facing the first information storage medium when the first information storage medium is supported by the support means, and the second optical head facing the first information storage medium.
When the second information storage medium is supported, the second optical head facing the second information storage medium and the second optical head are movable in a direction of coming into contact with and separating from the second information storage medium. Support means to support the, and operating this support means,
And a retracting unit for retracting the cartridge of the first storage medium supported by the supporting unit to a position where the second optical head does not interfere with the cartridge.

According to a fifth aspect of the present invention, there is provided a supporting means for selectively supporting the first information storage medium housed in the cartridge or the exposed second information storage medium not housed in the cartridge. A first optical head facing the first information storage medium when the first information storage medium is supported by the support means, and the second optical head facing the first information storage medium.
When the above information storage medium is supported, a second optical head facing the second information storage medium and both end portions of the second optical head are slidably supported, and the second information storage medium is supported. Of the first and second guide shafts, which are guided along the radial direction of the first and second guide shafts, and the other is operated in a direction in which one of the first and second guide shafts is the center and the other is in contact with and away from the second information storage medium Accordingly, there is provided a retracting unit that retracts the cartridge of the first storage medium supported by the supporting unit so that the second optical head does not interfere with the cartridge.

According to a sixth aspect of the present invention, there is provided a first information storage medium which is provided in the base and accommodated in the cartridge.
Or the exposed second which is not stored in the cartridge
Support means for selectively supporting the information storage medium, a first optical head facing the first information storage medium when the first information storage medium is supported by the support means, and the support. When the second information storage medium is supported by the means, the second optical head facing the second information storage medium and the both ends of the second optical head disposed on the base are slid. First and second guide shafts that freely support and guide along the radial direction of the second information storage medium, and one of the first and second guide shafts as the center and the other with respect to the base And a retracting unit that is operated so as to move toward and away from the cartridge so as to retract the cartridge of the first storage medium supported by the supporting unit so that the second optical head does not interfere with the cartridge.

According to a seventh aspect of the present invention, the information storage medium provided in the main body of the apparatus and inserted in the main body of the apparatus is the first information storage medium accommodated in the cartridge, or in the cartridge. Discriminating means for discriminating whether or not it is the exposed second information storage medium which is not housed in the first information storage medium, and the first information storage medium which is inserted into the apparatus main body.
Alternatively, a supporting means for selectively supporting the second information storage medium, and a first optical head facing the first information storage medium when the first information storage medium is supported by the supporting means. An information storage medium in which, when the second information storage medium is supported by the supporting means, a second optical head facing the second information storage medium and the discriminating means are inserted into the apparatus main body. When it is determined that is the first information storage medium stored in the cartridge, the second optical head is retracted to a position where it does not interfere with the cartridge, and the exposed second information not stored in the cartridge. And a retracting means for moving the second optical head to a position facing the second information storage medium when it is determined to be a storage medium.

According to the present invention, the first and second optical heads are arranged corresponding to the first and second information storage media of different types, and these first and second optical heads are used for the types of information storage media. It is possible to process information of different types of information storage media by selectively using the information storage media according to the above.

Further, the first information storage accommodated in the cartridge is retracted by the retracting means so that the second optical head does not interfere with the cartridge of the first information storage medium supported by the supporting means. Improve information processing on the medium.

Further, the first and second guide shafts for guiding the traveling of the second optical head are used to configure the retracting means, so that the configuration of the retracting means can be simplified.

Further, the first and second guide shafts are arranged on a base provided with a supporting means, and one of the first and second guide shafts is moved as a center to move the other toward and away from the base. By retracting the second optical head from the cartridge and facing the second information processing medium, it is possible to obtain high positioning accuracy with a simple configuration.

[0024]

DETAILED DESCRIPTION OF THE INVENTION The present invention will be described below with reference to an embodiment shown in the drawings. FIG. 1 is a plan view showing an optical disk device, and FIG. 2 is a perspective view thereof. In the figure, H is an apparatus main body, and the apparatus main body H is provided with a spindle motor 1 as a supporting means for supporting and rotating the first or second disk D1 or D2 as the first or second information storage medium. Has been.

The first disk D1 has a thin substrate thickness (0.6 μm) corresponding to the recently developed high recording density.
A standard substrate thickness (1. mm) standard (hereinafter referred to as DVD standard) is used as the second disc D2.
2 mm) compact disc standard (hereinafter referred to as CD standard) is used. The first disc D1 is a disc that can be reproduced or recorded and reproduced, and the second disc D2 is a disc that can be reproduced or additionally recorded.

Further, a DVD optical head 2 as a first optical head for processing information on the first disk D1 and a second disk for processing information on the second disk D2 symmetrically about the spindle motor 1. A CD optical head 3 as the second optical head is provided.

The CD optical head 3 is slidably supported at one end by a first guide shaft 4 and at the other end by a second guide shaft 5, and these first and second guide shafts 4 and 5 are slidably supported. They are arranged in parallel along the radial direction of the second disk D2. A rack 6 is provided on one side of the CD optical head 3, and a pinion 7 is meshed with the rack 6. A drive gear 9a of a drive motor 9 is connected to the pinion 7 via a feed gear 8. By the forward / reverse rotation of the drive motor 9, the CD optical head 3 is moved to the first position.
And it is adapted to run along the second guide shafts 4, 5, that is, along the radial direction of the second disk D2.

A light beam is sent from a fixed optical system (not shown) to the CD optical head 3, and this light beam is irradiated from the CD optical head 3 to the second disk D2 for information processing. .

On the other hand, both ends of the DVD optical head 2 are slidably supported by two parallel guide shafts 10 and 11, and these guide shafts 10 and 11 extend in the radial direction of the first disc D1. It is arranged.
The DVD optical head 2 is adapted to be run by the linear motor 12 along the guide shafts 10 and 11, that is, along the radial direction of the first disk D1.

In the figure, 13 is a fixed optical system, and a light beam is sent from the fixed optical system 13 to the DVD optical head 3, and this light beam is transmitted from the DVD optical head 3 to the first disk D.
It is designed to illuminate 1 and process information.

The first disc D1 of the DVD standard is used by being housed in a cartridge K as shown in FIG.
The second disc D2 of the CD standard is used in an exposed state without being housed in the cartridge K.

Further, on the disk introduction side of the apparatus main body H,
First and second detection sensors 26, 2 as discriminating means
7 are provided. First and second detection sensor 2
6 and 27 irradiate the cartridge K of the first disk D1 or the second disk D2 with light to determine whether the inserted one is the cartridge K or the second disk D2 according to its reflectance. It is designed to detect

FIG. 3 is a plan view showing a CD optical head 3.
FIG. 4 is a front view thereof. The CD optical head 3 has a head base 14, and an objective lens actuator 17 and an objective lens 17 operated by the objective lens actuator 17 are provided at a substantially central portion of the head base 14.
a is provided. An insertion hole 15 having a circular cross section for inserting the first guide shaft 4 is formed in one side portion of the head base 14, and an insertion hole having an elongated cross section for inserting the second guide shaft 5 in the other side portion. 16 are formed.
A bush 15a is interposed between the first guide shaft 4 and the insertion hole 15.

5 and 6 show a retracting means 1 for retracting the second optical head 2 from the information processing position to the retracted position.
8 is shown. When the cartridge K containing the first disk D1 is inserted into the main body H of the apparatus and the first disk D1 is mounted on and supported by the spindle motor 1, the shutter S is opened and the window is opened. Therefore, the first optical head 2 enters the window and faces the first disk D1 without coming into contact with the cartridge K. However, since the height of the second optical head 3 at the information processing position is the same as that of the first optical head 2, the height of the second optical head 3 abuts on the cartridge K and interferes with it.

Therefore, during information processing of the first disk D1, it is necessary to move the second optical head 3 from the information processing position to the retracted position so that the second optical head 3 does not interfere with the decartridge K. .

Reference numeral 20 in the drawing denotes a drive base for holding the spindle motor 1 and the like. The first guide shaft 4 is fixedly held on one side of the bottom surface of the drive base 20, and the second guide is fixed on the other side of the bottom surface. The guide shaft 5 is held. Both ends of the second guide shaft 5 are held by rotatable clamps 21 (only one of which is shown). A drive gear 24 of a drive motor 23 that rotates in the forward and reverse directions is connected to the clamp 21 via a driven gear 22. Normally, the clamper 21 is rotated downward as shown in FIG. Since the second guide shaft 5 is inserted into the insertion hole 16 having a long hole shape, when the clamper 21 rotates downward, the second guide shaft 5 is moved in the insertion hole 16 in the longitudinal direction and can be lowered. Has become. That is,
By lowering the second guide shaft 5 downward, the second optical head 3 rotates downward about the first guide shaft 4 as shown in FIG. 8, and moves from the information processing position to the retracted position. That is, it moves to a position where it does not interfere with the cartridge K.

Further, as shown in FIG. 5, the drive motor 23 is connected with a CPU 25 for controlling the drive thereof.
The CPU 25 has the first and second detection sensors 26, 27.
Is connected, and the CPU 25 controls the drive of the drive motor 23 by the detection signals of the first and second detection sensors 26 and 27. That is, when the first detection sensor 26 detects the insertion of the cartridge K that accommodates the first disk D1, the drive motor 23 is not driven and remains in that state, and the second detection sensor 27 is set to the second state. Disk D2
Only when this is detected, the drive motor 23 is driven to rotate the clamper 21 upward.

Next, the operation of the above embodiment will be described. For example, when the second disk D2 is inserted into the apparatus main body H, it is detected by the second detection sensor 27 and the detection signal is sent to the CPU 25. As a result, the drive motor 23 is driven to move the clapper 21 through the drive gear 24 and the driven gear 22 from the state shown in FIG. 6, that is, from the state where the second optical head 3 is in the retracted position as shown in FIG. As shown in FIG. 5, it is rotated upward until it abuts on the drive base 20, that is,
As shown in FIG. 7, the second optical head 3 is raised so as to be located at the information processing position. When the second disk D2 is inserted to a predetermined position and positioned above the spindle motor 1, the second disk D2 is lowered and placed on and supported by the spindle motor 1 to face the second optical head 3. After that, the beam light is emitted from the objective lens 17a of the second optical head 3 to the second disk D2, and the second disk D2 is rotated by the drive of the spindle motor 1. Drives the drive gear 9
The second optical head 3 travels along the radial direction of the second disk D2 through a, the feed gear 8, the pinion 7, and the rack 6 to scan the light beam. Information is recorded on the second disk D2 by this scanning, or the reflected beam light reflected from the second disk D2 is received by a light receiving element of a fixed optical system (not shown), so that the information is read and reproduced. To be done.

When the processing of the second disk D2 is completed in this way, the drive motor 23 is driven in the reverse direction and the drive motor 23 shown in FIG.
8, the clamper 21 is rotated downward, the second guide shaft 5 is lowered, and as shown in FIG.
The optical head 3 rotates about the first guide shaft 4 and retreats from the information processing position to the retreat position.

In addition, the first disk D1 is provided in the apparatus main body H.
When the cartridge K that stores the CPU is inserted, the detection signal is detected by the first detection sensor 26 and the detection signal is detected by the CPU.
Sent to 25. In this case, the drive motor 23 is not driven and the optical head 3 remains in the retracted position as shown in FIG.

When the cartridge K is inserted to a predetermined position and positioned above the spindle motor 1, the cartridge K is lowered to mount and support the first disk D1 on the spindle motor 1, and the shutter S is opened. It faces the first optical head 2. Then, the light beam is emitted from the objective lens 17b of the first optical head 2 to the first disk D1, and the first disk D1 is rotated by the drive of the spindle motor 1, and the linear motor 12 is further driven. Therefore, the first optical head 2
The light beam is scanned while traveling along the radial direction of the disk D1. Information is recorded on the first disc D1 by this scanning, or the reflected beam light reflected from the first disc D1 is received by a light receiving element of a fixed optical system (not shown), so that the information is read and reproduced. To be done.

As described above, in the above-mentioned one embodiment,
Since the optical heads 2 and 3 for DVD and CD are provided and the optical heads 2 and 3 for DVD and CD can be selectively used, it is good even if the disc is of the DVD standard or the CD standard. Information can be recorded and played back on.

When the first disc D1 of the DVD standard is inserted into the apparatus main body H, the CD optical head 2 is used.
The DVD-standard disc D
When 1 is supported by the spindle motor 1, the cartridge K does not interfere with the CD optical head 3 and can be mounted satisfactorily.

Further, since the retracting mechanism 18 is constructed by utilizing the first and second guide rails 4 and 5 for guiding the optical head 3, the structure can be simplified and the cost can be reduced. Furthermore, by rotating the second optical head 3 about the first guide rail 4 arranged on the head base 14 to retract it, and by bringing the second guide rail 5 into contact with the head base 14, Second optical head 3
Since the positioning is performed, the positioning accuracy can be improved.

[0045]

As described above, according to the present invention, the first and second optical heads are arranged corresponding to the first and second information storage media of different types, and the first and second optical heads are arranged. Since the optical head is selectively used according to the type of the information storage medium, it is possible to properly process information even with different types of information storage media.

Further, since the second optical head is retracted so as not to interfere with the cartridge, even the first information storage medium housed in the cartridge can be properly mounted for information processing.

Further, since the retracting means is constituted by using the first and second guide shafts for guiding the traveling of the second optical head, the constitution of the retracting means can be simplified and the cost can be reduced.

Further, the first and second guide shafts are arranged on the base provided with the supporting means, and one of the first and second guide shafts is moved as a center to move the other toward and away from the base. Since the second optical head is retracted from the cartridge or positioned at the information processing position, high positioning accuracy can be obtained with a simple configuration.

[Brief description of drawings]

FIG. 1 is a plan view showing an optical disc device according to an embodiment of the present invention.

FIG. 2 is a perspective view showing an optical disc device.

FIG. 3 is a plan view showing an optical head for CD.

FIG. 4 is a front view showing an optical head for CD.

FIG. 5 is a front view showing a retracting mechanism of a CD optical head.

FIG. 6 is a diagram showing an operation of a retracting mechanism.

FIG. 7 is a diagram showing a state in which an optical head for CD is located at an information processing position.

FIG. 8 is a diagram showing a state where the CD optical head is retracted from the information processing position.

[Explanation of symbols]

 H ... Device body K ... Cartridge D1 ... First disk (first information storage medium) D2 ... Second disk (second information storage medium) 1 ... Spindle motor (supporting means) 2 ... First optical head 3 ... 2nd optical head 18 ... Evacuation means 26 ... 1st detection sensor (discrimination means) 27 ... 2nd detection sensor (discrimination means)

Claims (7)

[Claims] 1. A support means for selectively supporting a first information storage medium housed in a cartridge or an exposed second information storage medium not housed in a cartridge, and the first means for supporting the support means. When the information storage medium is supported, the first optical head that faces the first information storage medium, and when the second information storage medium is supported by the supporting unit, the second information storage A second optical head facing the medium, and a first optical head supported by the supporting means.
An information processing device comprising: a retracting unit that retracts the information storage medium to a position that does not interfere with the cartridge. 2. A support means for selectively supporting a first information storage medium housed in a cartridge or an exposed second information storage medium not housed in a cartridge, and the first means on the support means. When the information storage medium is supported, the first optical head that faces the first information storage medium, and when the second information storage medium is supported by the supporting unit, the second information storage A second optical head facing the medium, and a first optical head supported by the supporting means.
When the second information storage medium is supported by the supporting means, the information storage medium is moved to a position facing the second information storage medium when the second information storage medium is supported by the supporting means. An information processing apparatus comprising: an evacuation unit to be moved. 3. A support means for selectively supporting a first information storage medium accommodated in a cartridge or an exposed second information storage medium not accommodated in a cartridge, and the first means for supporting the support means. When the information storage medium is supported, the first optical head that faces the first information storage medium, and when the second information storage medium is supported by the supporting unit, the second information storage A second optical head facing the medium, and when the first information storage medium is supported by the supporting means, the second optical head is retracted to a position where it does not interfere with the cartridge, and the supporting means is provided with the second optical head. An information processing apparatus comprising: a retracting unit that moves the second information storage medium from the retracted position to a position facing the second information storage medium when the second information storage medium is supported. 4. A support means for selectively supporting the first information storage medium housed in the cartridge or the exposed second information storage medium not housed in the cartridge, and the first means on the support means. When the information storage medium is supported, the first optical head that faces the first information storage medium, and when the second information storage medium is supported by the supporting unit, the second information storage A second optical head facing the medium, a support means for movably supporting the second optical head in a direction of approaching and separating from the second information storage medium, and operating the support means to perform the support. An information processing device comprising: a retracting unit that retracts the cartridge of the first storage medium supported by the unit to a position where the second optical head does not interfere with the cartridge. 5. A support means for selectively supporting the first information storage medium housed in the cartridge or the exposed second information storage medium not housed in the cartridge, and the first means on the support means. When the information storage medium is supported, the first optical head that faces the first information storage medium, and when the second information storage medium is supported by the supporting unit, the second information storage A second optical head facing the medium, and first and second guide shafts slidably supporting both ends of the second optical head and guiding the second information storage medium in the radial direction. And a first storage medium supported by the supporting means by operating one of the first and second guide shafts as a center and the other in a direction of approaching and separating from the second information storage medium. Car An information processing apparatus comprising: a retracting unit that retracts the second optical head so as not to interfere with the trench. 6. A support means provided on a base for selectively supporting a first information storage medium housed in a cartridge or an exposed second information storage medium not housed in a cartridge, and supporting means. A first optical head facing the first information storage medium when the first information storage medium is supported by the means; and a second optical storage medium supported by the supporting means when the second information storage medium is supported by the first optical head. A second optical head that faces the second information storage medium, and a second optical head that is disposed on the base and slidably supports both ends of the second optical head, and is arranged in a radial direction of the second information storage medium. The first and second guide shafts, which are guided along the guide shafts, and the first and second guide shafts, which are supported by the support means, are operated by moving one of the first and second guide shafts in the direction toward and away from the base. An information processing apparatus, comprising: a retracting unit that retracts the cartridge of the first storage medium so that the second optical head does not interfere with the cartridge. 7. An information storage medium, which is provided in the main body of the apparatus and is inserted into the main body of the apparatus, is the first information storage medium accommodated in the cartridge, or is exposed not accommodated in the cartridge. Discriminating means for discriminating whether the medium is a second information storage medium, supporting means for selectively supporting the first information storage medium or the second information storage medium inserted into the apparatus body, and the supporting means. A first optical head facing the first information storage medium when the first information storage medium is supported by the means; and a second optical storage medium supported by the supporting means when the second information storage medium is supported by the first optical head. A second optical head facing the second information storage medium, and the determination means determines that the information storage medium inserted into the apparatus body is the first information storage medium accommodated in the cartridge. Is the above When the second optical head is retracted to a position where it does not interfere with the cartridge and it is determined that it is the exposed second information storage medium that is not housed in the cartridge, the second optical head is moved to the second information storage medium. An information processing apparatus comprising: a retracting unit that is moved to a position facing the.