WO2006006482A1

WO2006006482A1 - Disk support detection device, method therefor, program therefor, recording medium recording the program, and disk unit

Info

Publication number: WO2006006482A1
Application number: PCT/JP2005/012547
Authority: WO
Inventors: Eiji Hoshinaka; Hitoshi Ueno; Yukinari Makisaka; Youichi Konno
Original assignee: Pioneer Corporation
Priority date: 2004-07-08
Filing date: 2005-07-07
Publication date: 2006-01-19
Also published as: JPWO2006006482A1

Abstract

An insertion of an optical disk (10) drives a rotation-use motor (221) for rotation-driving a turntable (222) detachably and pivotally supporting the optical disk (10) and detects a rotating speed. An optical sensor (250) detects the rotating speed of the optical disk (10). The difference between the rotating speeds is calculated, and, when the speed difference is almost zero in consideration of an error, it is judged that the optical disk (10) is properly supported pivotally. When the speed difference exceeds a specified threshold, it is judged that the optical disk (10) is not properly supported pivotally due to idling with respect to the turntable (222) and processing of properly supporting pivotally the optical disk (10) is repeated. A pivotally supporting condition is properly judged to enable proper reading and recording. The above arrangement is especially effective for a structure that is provided with the turntable (222) having a so-called self-chucking mechanism and pivotally supports the optical disk (10) automatically when it is inserted.

Description

Specification

Disk support detection device, method thereof, program thereof, recording medium recording the program, and disk device

Technical field

TECHNICAL FIELD [0001] The present invention relates to a disk support detection apparatus that detects a state in which a support means is detachably supported and is rotatably supported, a method thereof, a program thereof, a recording medium on which the program is recorded, and a disk apparatus.

Background art

Conventionally, disk devices that read information recorded on a disk-shaped recording medium and record information are known. This disk device is provided with a configuration for detecting that a disk-shaped recording medium is properly mounted (see, for example, Patent Document 1).

[0003] The disk device described in Patent Document 1 is provided with a magnetic disk on the back surface of a turntable on which a disk is placed and rotated. In this disk device, a magnetic sensor for detecting a change in the magnetic field obtained from the magnet provided on the magnetic disk is disposed at a position facing the magnetic disk of the electric motor that rotationally drives the turntable. The disk device outputs a rotation signal generated by the rotation of the turntable as a result of the rotation of the magnetic disk as a pulse signal by the signal generation circuit, and the turntable rotates based on the panel signal. The time taken for the force to reach a value that reaches a predetermined number of revolutions is measured, and the presence / absence of the disk and the type of disk are determined.

[0004] Patent Document 1: JP-A-9 128878 (page 2, right column, page 4, left column)

Disclosure of the invention

Problems to be solved by the invention

By the way, in the conventional disk device as described in Patent Document 1, the rotational speed of the turntable is detected to determine the presence or absence of the disk. For this reason, in the conventional configuration, for example, there is a problem that the disk is correctly placed on the turntable, and there is a possibility that the presence / absence of the disk and the disk type may not be correctly determined. [0006] In view of the above-described points, the present invention provides a disk support detection apparatus, a method thereof, a program thereof, a recording medium on which the program is recorded, and a recording medium for recording the program. An object is to provide a disk device.

Means for solving the problem

The disc support detection device of the present invention is a disc support detection device that detects a state in which a disc-shaped recording medium is detachably supported and supported by a support means, and detects the rotational speed of the support means. A rotational speed detection means, a disk rotational speed detection means for detecting the rotational speed of the disc-shaped recording medium, and a speed difference for calculating a speed difference between the rotational speed of the support means and the rotational speed of the disc-shaped recording medium. Computation means, and support state judgment means for judging a supported state of the disc-shaped recording medium based on the magnitude of the speed difference are provided.

[0008] The disc device of the present invention includes a support unit that supports a disc-shaped recording medium so that the disc-shaped recording medium is detachable and rotatable, and the above-described present invention for detecting a state in which the disc-shaped recording medium is supported by the support unit. And a disk support detecting device.

[0009] The disk support detection method of the present invention is a disk support detection method for detecting a state in which a disk-shaped recording medium is detachably supported and supported by a support means, the rotation speed of the support means and Recognizing the rotational speed of the disc-shaped recording medium, calculating the difference between the recognized rotational speeds, and based on the magnitude of the calculated rotational speed difference! /, The disc-shaped recording by the support means The support state of the medium is judged.

[0010] The disc support detection program of the present invention is characterized in that the calculation means functions as the above-described disc support detection device of the present invention.

[0011] The disc support detection program of the present invention is characterized by causing a calculation means to execute the above-described disc support detection method of the present invention.

[0012] A recording medium of the present invention is characterized in that the above-described disk support detection program of the present invention is recorded so as to be readable by an arithmetic means.

Brief Description of Drawings

FIG. 1 is a plan view with a part cut away showing a schematic configuration of a disk device according to an embodiment of the present invention. FIG. 2 is a plan view with a part cut away showing a schematic configuration of the disk device in the embodiment.

FIG. 3 is a conceptual diagram showing a schematic configuration of the disk shaft support detecting device according to the embodiment in a state in which an optical disk is appropriately supported.

FIG. 4 is a block diagram showing a schematic configuration of a control circuit unit in the embodiment.

FIG. 5 is a conceptual diagram of the optical disk showing a schematic configuration of the disk shaft support detection device according to the embodiment in a state where the shaft support is defective.

Explanation of symbols

10 ··· Optical disc that is a disc-shaped recording medium

100 'disk unit

220... Disk rotation drive means as support means

221 '' Rotary electric motor as spindle motor

222 ··· Turntape

250 ··· Optical sensor constituting disc rotation speed detection means

600 ··· Control circuit as arithmetic means

610 ... Supporting rotational speed detection means

620 ··· Disk rotational speed detection means

630 ··· Speed difference calculation means

640 ··· Supporting means

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. In the present embodiment, a slot-in type disk device is described as an example of recording and reading information on and from an optical disk as a disk-shaped recording medium. However, for example, a configuration including a tray for conveying a disk-shaped recording medium, etc. The pedestal part with the shaft support part moves! Further, only reading or recording of information may be performed. Furthermore, the disk-shaped recording medium is not limited to an optical disk, and any disk-shaped recording medium such as a magnetic disk or a magneto-optical disk can be targeted. In addition, it is a so-called thin slot-in type that is attached to electric devices such as portable personal computers. The power to be exemplified The present invention is not limited to a thin configuration, for example, a single unit such as a game machine or a playback device that performs processing for recording and playback such as video data recording.

[Configuration of Disk Device]

In FIG. 1 to FIG. 3, reference numeral 100 denotes a disk device, and this disk device 100 is a so-called thin slot-in type that is mounted on an electric device such as a portable personal computer. This disk device 100 is a reading process and a recording process that reads information recorded on a recording surface (not shown) provided on at least one surface of a disk-shaped optical disk 10 as a disk-shaped recording medium that is detachably mounted. The recording process is an information process that records various information on the surface. The disk device 100 includes a substantially box-shaped case body 110 made of metal and having an internal space, for example. The case body 110 is provided with an unillustrated decorative veneer formed on one side surface in the form of an elongated plate made of, for example, synthetic resin. This decorative board is provided with an opening (not shown) provided in a slit shape along the longitudinal direction. Further, in the case body 110, a disk processing unit 200 called a so-called traverse mechanism, a processing moving unit 300, a driving unit 400 as a moving unit for moving the disk processing unit 200, and the optical disc 10 are conveyed. A conveying means 500 and a control circuit unit 600 as a calculation means are provided.

The disk processing unit 200 includes a pedestal unit 210 as a rotating body that is formed in a flat octagonal shape in plan view, for example, using a metal plate. The pedestal portion 210 is formed in a frame shape with a notch 211 provided substantially at the center. The pedestal portion 210 is provided with a disk rotation drive means 220 as a support means located on one end side in the longitudinal direction near the periphery.

The disk rotation driving means 220 includes a rotating electric motor 221 such as a spindle motor, and a turntable 222 provided integrally with an output shaft 221A of the rotating electric motor 221. The electric motor 221 for rotation is connected to the control circuit unit 600 in a controllable manner, and is driven by electric power supplied from the control circuit unit 600. The turntable 222 has a so-called self-chuck function, and supports the optical disk in a detachable manner, that is, supports the shaft.

Specifically, as shown in FIGS. 1 to 3, the turntable 222 is provided on the optical disc 10 as shown in FIG. An opening formed in the center is not shown! A substantially cylindrical rotary shaft 222A that is removably supported by being inserted into the shaft hole, and a shaft of the optical disk 10 that protrudes in the form of a flange on the outer peripheral surface of the rotary shaft 222A. The flange 222B, on which the peripheral edge of the hole is placed and supported, and the peripheral surface force of the rotating shaft 222A is advanced and retracted, and is engaged with the peripheral edge of the shaft hole of the optical disc 10 so as to be optically decoupled by the flange 222B. And an engaging portion 222C for holding the disc 10. Then, the turntable 222 is rotated together with the optical disk 10 supported by the rotating electric motor 221.

[0020] The pedestal portion 210 is provided with a pair of guide shafts as guide members (not shown). These guide shafts are formed, for example, in the shape of an elongated bar made of metal, and are arranged substantially parallel to a state in which the axial direction is substantially along the longitudinal direction of the pedestal portion 210.

Furthermore, an information processing unit 240 is disposed on the pedestal unit 210. The information processing unit 240 includes a movement holding unit 241 that is supported so as to be bridged between a pair of guide shafts. The movement holding unit 241 includes an optical pickup 242 including a light source (not shown), a lens 242A for converging light having the light source power, and an optical sensor (not shown) for detecting reflected light reflected by the optical disc 10. It is installed. The optical pickup 242 is connected to the control circuit unit 600 so as to be able to transmit and receive signals. Under the control of the control circuit unit 600, the optical pickup 242 reads various information recorded on the recording surface of the optical disc 10 and outputs it to the output circuit unit. In addition, a recording process for recording various information from the control circuit unit 600 on the recording surface is performed.

In addition, as shown in FIG. 3, the pedestal 210 is provided with an optical sensor 250 as a disk rotation speed detecting means. The optical sensor 250 includes a light source (not shown) that irradiates light to the optical disk 10 that is pivotally supported by the turntable 222, and a light receiving element (not shown) that receives reflected light from the optical disk 10, and supports the rotational speed of the optical disk 10. Then, the reflected reflected light is detected and output to the control circuit unit 600 as a signal relating to the rotational speed. The disk processing unit 200 is configured such that the side on which the turntable 222 which is one end side in the longitudinal direction of the pedestal unit 210 is provided is rotatable in a direction substantially along the axial direction of the rotating shaft 222A. The case 110 is pivotally supported, and is disposed in the case body 110 so that the turntable 222 side can be turned to a turning end.

The process moving means 300 is integrally disposed on the pedestal 210. As shown in FIG. 1 and FIG. 2, the processing moving means 300 is a transfer device such as a stepping motor that is an electric motor. The electric motor 310 for a movement and the lead screw which is not shown in figure as a screw member are provided. The electric motor 310 for movement is connected to the control circuit unit 600 in a controllable manner, and is driven by electric power supplied from the control circuit unit 600. The lead screw is formed, for example, in the shape of an elongated rod made of metal and is connected to the electric motor 310 for movement, and is helically engaged as an engaging portion with which a movement restricting claw portion (not shown) of the information processing unit 240 is engaged. Grooves are provided on the outer peripheral surface. Then, the processing moving means 300 moves the information processing unit 240 supported by the guide shaft by a lead screw that is rotated by driving the electric motor 310 for movement.

The drive unit 400 includes a motor 410 disposed in the case body 110, the operation of which is controlled by the control circuit unit 600, for example, and a moving cam 420 that moves by driving the motor 410. The moving cam 420 engages with an engaging claw 214 projecting outward from the pedestal 210 and engages with the motor 410, and is moved by driving the motor 410 to rotate the pedestal 210. This rotation of the pedestal 210 is a state in which the rotating shaft 222A of the turntable 222 advances and retreats on the moving path along which the optical disc 10 is conveyed by the conveying means 500. Further, the moving cam 420 of the driving unit 400 presses the optical disc 10 near the shaft hole, for example, near the shaft hole when the optical disc 10 is transported to a predetermined position, and pivotally supports the optical disc 10 on the turntable 222. The pedestal 210 is rotated to the state to be made.

[0025] When the optical disc 10 is also discharged with the opening force of the decorative plate, the case body 110 is rotated by rotating the pedestal 210 so that the rotating shaft 222A of the turntable 222 is also retracted on the moving path. The tip of the pin portion 215 projecting from the bottom surface of the optical disc 10 comes into contact with the vicinity of the shaft hole of the optical disc 10, and the shaft support state of the rotating shaft 222A is released. The movement of the moving cam 420 that rotates the pedestal 210 is controlled based on the on / off state of a plurality of detection switches 431 shown in FIG. The circuit unit 600 is controlled by controlling the driving state of the motor 410.

The transport means 500 includes a detection arm 531 disposed on the case body 110, an interlocking arm 532, a carry-in arm 533, and a detection switch 534. The detection arm 531, the linkage arm 532, and the carry-in arm 533 are formed in an elongated plate shape, for example, with a metal plate or the like, and one end portion in the longitudinal direction is pivotally supported on the case body 110. And, the detection arm 531 and the interlocking arm 532 are rotatable in the middle part in the longitudinal direction. The interlocking arm 532 rotates as the detection arm 531 rotates. In addition, the loading arm 533 is disposed such that the other end side thereof is pivotable inward in the vicinity of the opening of the case body 110, and the other end side abuts on the periphery of the optical disc 10 to carry the optical disc 10 in.

[0027] Then, in the vicinity of the rotation-side tips of the detection arm 531, the interlocking arm 532, and the carry-in arm 533, a substantially central portion in the axial direction is formed with a small diameter, and the periphery of the optical disc 10 is in contact with the peripheral surface 535 is rotatably supported. It should be noted that the detection arm 531 and the loading arm 533 can be piled up and moved outward when a relatively strong force is applied, specifically when the optical disk 10 is pushed into the opening. Is rotatable so as to be pushed outward by the peripheral surface of the optical disk 10. The detection switch 534 of the transport means 500 is disposed on the case body 110 and is turned on / off according to the rotating state of the interlocking arm 532. The on / off signal of the detection switch 534 is output to the control circuit unit 600.

The control circuit unit 600 is configured as a circuit configuration on a circuit board on which various electrical components such as a CPU (Central Processing Unit) are mounted, for example, and controls the operation of the entire disk device 100. Further, when the control circuit unit 600 detects the insertion of the optical disk 10 based on the on / off state of the detection switch 534 of the transport means 500, that is, when the control circuit unit 600 recognizes that the detection switch 534 is turned off, it determines that the optical disk 10 has been inserted. Then, the drive unit 400 is operated, and the disc processing unit 200 is controlled to rotate so that the rotating shaft 222A of the turntable 222 advances on the moving path of the optical disc 10.

[0029] When the control circuit unit 600 recognizes, for example, the operation of an eject button that requests ejection of the optical disc 10, or recognizes a command signal that ejects the optical disc 10 from an electric device, etc., the electric motor for movement is used. The controller 310 is driven to move the information processing unit 240 to the end position on the base end side of the pedestal 210. Further, when the control circuit unit 600 recognizes that the movement of the information processing unit 240 to the end position is completed, the control unit 600 operates the drive unit 400 so that the rotating shaft 222A also moves backward in the moving path force. Control to rotate 200. Then, the control circuit unit 600 controls to move the detection arm 531 and the interlocking arm 532 of the transport unit 500 to discharge the optical disc 10 also with the opening force.

Furthermore, as shown in FIG. 4, the control circuit unit 600 detects the support rotation speed as various programs developed on an OS (Operating System) that controls the operation of the entire disk device 100. It includes an ejecting means 610, a disk rotational speed detecting means 620, a speed difference calculating means 630, and a support state judging means 640. The disk rotation speed detection means 620 and the optical sensor 250 constitute the disk rotation speed detection means of the present invention. These support rotation speed detection means 610, disk rotation speed detection means 620, speed difference calculation means 630, and support The state determination means 640 and the optical sensor 250 constitute the disc support detection device of the present invention.

The support rotation speed detection unit 610 detects the rotation speed of the electric motor 221 for rotation. As the detection of the rotation speed of the electric motor 221 for rotation, for example, a pulse signal with an interval corresponding to the rotation speed of the rotation shaft of the electric motor 221 for rotation output from the Hall element provided in the electric motor 221 for rotation. Detection based on the control current in the electric power for rotating and driving the electric motor 221 for rotation, or the magnet provided on the turntable 222 is replaced with the base 210 or the electric motor for rotation. For example, it can be detected by a magnetic sensor provided at 221 or the like.

The disk rotation speed detection means 620 detects the rotation speed of the optical disk 10 mounted on the turntable 222. The disk rotation speed detecting means 620 detects based on a signal corresponding to detection of reflected light reflected from the optical disk 10 output from the optical sensor 250. Specifically, the rotation speed of the optical disk 10 is detected based on the characteristic of reflected light that is modulated like the so-called Doppler effect according to the rotation speed of the optical disk 10.

Speed difference calculation means 630 calculates the difference between the rotation speed of electric motor 221 for rotation detected by support rotation speed detection means 610 and the rotation speed of optical disk 10 detected by disk rotation speed detection means 620. Calculate. Then, the speed difference calculation means 630 takes into account, for example, the rotational speed error of the rotating electric motor 221 to be detected and the rotational speed error of the optical disk 10 to detect whether the calculated rotational speed difference is larger than a predetermined threshold value. Judge whether or not. That is, it is determined whether or not the rotational speed of the rotating electric motor 221 and the rotational speed of the optical disc 10 are substantially the same, specifically, whether or not the magnitude of the difference between the rotational speeds is substantially zero. Then, the speed difference calculation means 630 outputs a signal related to the determination result to the support state determination means 640.

[0034] The support state determination unit 640 relates to the determination result output from the speed difference calculation unit 630. Based on the signal, the support state of the optical disk 10 to the turntable 222, that is, the shaft support state is determined. Specifically, when the support state determining means 640 determines that the speed difference calculating means 630 determines that the magnitude of the speed difference is substantially zero, the optical disk 10 is appropriately pivotally supported on the turntable 222 as shown in FIG. It is determined that it has been performed.

Further, if the support state determination means 640 determines that the speed difference calculation means 630 determines that the magnitude of the speed difference is not substantially open, that is, greater than a predetermined threshold value, the optical disk 10 is turned to the turntable 222 as shown in FIG. The shaft hole of the optical disk 10 is inappropriate or larger than the standard, or the engaging part 222C of the turntable 222 is damaged and can be fixed properly. The optical disk 10 and the turntable 222 are judged to be in an improper shaft support condition, such as when the rotation axis 222A is not properly fixed. To do.

[0035] Then, when the support state determination means 640 determines that it is in an appropriate shaft support state, the support state determination unit 640 enters a standby state for reading information recorded on the optical disk 10 or recording processing for recording information on the optical disk 10. Set. If the support state determination means 640 determines that the shaft support state is inappropriate, the support state determination unit 640 operates the drive unit 400 to rotate the pedestal unit 210 and re-supports the optical disk 10 on the turntable 222 as appropriate. Repeat and determine the shaft support status again. If the shaft support state is not appropriate even if the determination of the shaft support state is repeated as appropriate, the optical disk 10 is ejected. In the process of ejecting, the optical disk 10 may not be properly supported!

[Operation of Disk Device]

Next, the operation of the disk device 100 in the first embodiment will be described.

First, power is supplied to the disk device 100 by turning on the power of the electric device. By supplying this electric power, the control circuit unit recognizes the rotation state of the disk processing unit 200 based on the on / off state of the detection switch 534. Specifically, when the detection switch 534 is turned off, it is determined that the detection arm 531 is in a standby state in which the detection arm 531 is rotated, and the rotation shaft 222A of the turntable 222 is positioned on the conveyance path of the optical disc 10. That is, it is determined that the disk processing unit 200 is in the advanced position, and the optical disk 10 is inserted and positioned in the carry-in completion position. On the other hand, when the detection switch 534 is turned on, it is determined that the tip of the detection arm 531 is rotating toward the opening, and the rotating shaft 222A also saves the force on the transport path of the optical disk 10, that is, the disk processing unit. 200 is determined to be the retracted position, and the optical disk 10 is loaded. Then, the control circuit unit 600 outputs a signal related to whether or not the optical disc 10 is inserted into a circuit that controls the operation of the electric device.

Then, when the optical disc 10 is inserted from the opening portion in the state of waiting for the optical disc 10 to be inserted, the periphery of the optical disc 10 comes into contact with the pulley of the detection arm 531. When the optical disk 10 is further pushed in this state, the detection arm 531 and the carry-in arm 533 are pushed out and pushed out so as to be rotated outward. When the optical disk 10 is pushed to a certain extent, the carry-in arm 533 gets over the periphery of the optical disk 10, and a biasing force acts again in a state where the carry-in arm 533 rotates inward. Is carried to the insertion completion position.

[0039] Further, when the optical disc 10 is loaded to a position before the loading completion position, the detection switch 534 is turned off. When the control circuit section 600 recognizes that the detection switch 534 is turned off, the control circuit section 600 starts the process of driving the motor 410 of the driving section 400 to move the moving cam 420 and rotating the disk processing section 200 to the advanced position. To do. When the optical disk 10 is loaded to the loading completion position, the detection arm 531 becomes the standby position and the movement of the optical disk 10 is restricted. When the optical disk 10 is positioned at this loading completion position, the rotating shaft 222A of the turntable 222 of the rotating disk processing unit 200 is inserted into the shaft hole that opens to the approximate center of the optical disk 10, and the optical disk 10 is inserted into the case. The optical disk 10 is pivotally supported on the turn table 222 by abutting against the ceiling surface of the body 110, and the pedestal 210 is rotated so that the optical disk 10 is positioned on the transport path.

[0040] After that, the control circuit unit 600 turns off the detection switch 534 so that the optical disk 10 is loaded to the loading completion position and the disk processing unit 200 is in the advanced position to support the optical disk 10. Judgment is performed, and the process of determining the shaft support state is performed. Specifically, the electric motor 221 for rotation is driven to rotate, and the rotation speed of the electric motor 221 for rotation is detected by the support rotation speed detector 610. In addition, the control circuit 600 detects the disk rotation speed. Means 620 detects the rotational speed of the optical disk 10. Then, the control circuit unit 600 stops the rotation of the rotating electric motor 221 and detects the rotational speed of the rotating electric motor 221 detected by the supporting rotational speed detecting means 610 and the disk rotational speed by the speed difference calculating means 630. Recognize the magnitude of the difference between the rotational speed of the optical disk 10 detected by means 620

[0041] Thereafter, the control circuit unit 600 uses the support state determination unit 640 to determine the axis of the turntable 222 of the optical disc 10 based on the determination result of the magnitude of the speed difference recognized by the speed difference calculation unit 630. Determine the state of support. That is, the support state determination means 640 determines that the rotation speed is substantially the same, that is, the speed difference is almost zero, and determines that the shaft is in an appropriate shaft support state. It is determined that the shaft is in an inappropriate state based on the determination result that the length is not almost zero but larger than the predetermined threshold value.

When the control circuit unit 600 determines that the shaft is in an improper shaft support state, the control circuit unit 600 repeats the process of bringing the optical disk 10 into contact with the ceiling surface of the case body 110 and pivoting it on the turntable 222. Repeat the shaft support status. If the shaft support state is not appropriate due to repeated determination of the shaft support state, the control circuit unit 600 performs a process of ejecting the optical disc 10. In addition, the control circuit unit 600 sets the standby state for the reading process or the recording process when it is determined that the shaft is in an appropriate state.

The control circuit unit 600 then performs an initialization process for recognizing the position of the optical pickup 242 after the process of determining the pivotal support state of the optical disc 10. Thereafter, based on information processing requests such as a reading process for reading various information recorded on the recording surface of the optical disc 10 and a recording process for recording various information on the recording surface, the control circuit unit 600 performs the electric motor 221 for rotation, Information processing is performed by appropriately controlling the operations of the electric motor 310 for movement and the optical pickup 242.

On the other hand, for example, when the control circuit unit 600 recognizes an operation of an eject button or the like for requesting ejection of the optical disc 10 or a request signal for requesting ejection from the electric device, the control circuit unit 600 detects the electric motor 310 for movement. The information processing unit 240 is moved to a state where the optical pickup 242 is positioned on the rotation base end side of the disk processing unit 200. Thereafter, the control circuit unit 600 drives the motor 410 of the driving unit 400 to move the moving cam 420, thereby disposing the device. Rotate the processing unit 200 to the retracted position. Due to the rotation of the disk processing unit 200, the pin unit 215 comes into contact with the optical disk 10 and the rotation shaft 222 A of the turntable 222 is detached from the optical disk 10. Then, after the disk processing unit 200 is rotated, the control circuit unit 600 rotates the detection arm 531 to push out the optical disk 10 and eject the optical disk 10 from the opening. The ejected state is supported in a state where, for example, a part of the optical disc 10 is not completely ejected and does not fall out without being completely ejected.

[Operational effects of the disk device]

As described above, in the embodiment described above, the rotation speed of the electric motor 221 for rotation detected by the support rotation speed detection means 610 and the turntable 222 detected by the disk rotation speed detection means 620 are mounted. The difference between the rotation speed of the optical disk 10 is calculated by the speed difference calculation means 630, and the shaft support state of the optical disk 10 is determined based on the magnitude of the speed difference calculated by the support state determination means 640. For this reason, for example, an improper shaft support as shown in FIG. 5 or a defective shaft support causes the optical disk 10 to idle with respect to the turntable 222. And record processing.

[0045] Then, when the magnitude of the speed difference is larger than a predetermined threshold value, the support state determination unit 640 determines that the optical disk 10 is properly supported on the turntable 222. For this reason, for example, if the speed difference is larger than a predetermined threshold value as the magnitude of the speed difference set in consideration of the error of the rotational speed to be detected, the turntable 222 and the optical disc 10 are not rotated together. Therefore, an inappropriate shaft support state can be recognized well.

[0046] Further, when the magnitude of the speed difference is substantially zero by the support state determination means 640, the turntable 222 and the optical disc 10 are rotated together, and a favorable shaft support state is obtained. Can be recognized.

Then, the rotational speed of the optical disk 10 is detected based on the state of the reflected light that is irradiated and reflected on the optical disk 10. For this reason, the rotational speed of the optical disc 10 itself can be easily detected. Furthermore, the rotational speed of the optical disc 10 can be detected using a relatively small configuration such as the optical sensor 250, and can be easily detected with a relatively simple configuration without increasing the size of the configuration.

[0048] Further, a so-called self-chuck mechanism that is rotated by driving of the electric motor 221 for rotation is provided. The power for driving the rotating electric motor 221 such as a spindle motor for rotating the provided turntable 222, for example, the current value is read, or the rotation speed of the turntable 222 itself is detected. For this reason, the rotational speed of the structure in which the optical disk 10 is rotatably supported can be easily detected with a relatively simple structure. Further, the turntable 222 having a self-chuck mechanism is configured such that the optical disk 10 is pressed against the ceiling surface of the case body 110 and is pivotally supported by a configuration in which the engaging portion 222C is provided on the rotating shaft 222A. For this reason, in such a configuration in which the shaft is automatically supported, the determination of the shaft support state is particularly effective, and good reading processing and recording processing can be obtained.

[0049] Then, when it is determined that the optical disk 10 is in an improper shaft support state, a process of supporting the shaft again is performed. For this reason, a state in which the shaft is appropriately supported is automatically obtained by repeating the shaft support processing, and convenience can be improved.

[Modification of Embodiment]

It should be noted that the present invention is not limited to the above-described embodiments, but includes the following modifications as long as the object of the present invention can be achieved.

That is, the disk device 100 using the disk-shaped recording medium has been illustrated, but as described above, not only the optical disk 10 but also any disk-shaped recording medium such as a magnetic disk or a magneto-optical disk is targeted. In addition to the V, so-called slot-in type disk device, the base with the rotary motor 221 having the turntable 222 moves forward and backward from the case body 110, and moves forward and backward from the case body 110. Thus, any configuration such as a tray type that conveys the optical disk 10 can be targeted. Further, the present invention can be applied to a configuration in which only one of the reading process or the recording process is processed. The conveying means 500 is not limited to the configuration in which the detection arm 531, the interlocking arm 532, and the carry-in arm 533 are provided, and any configuration such as a configuration in which the optical disk 10 is conveyed using a roller can be applied. Furthermore, the configuration is not limited to being incorporated in an electrical device, and may be configured as a single unit. In addition, as a control circuit unit 600 which is a circuit board mounted in the disk device 100, a single element may be configured as a program.

[0052] The configuration for moving the information processing unit 240 including the optical pickup 242 is not limited to the stepping motor, and any motor can be used. [0053] The configuration in which the information processing unit 240 is moved along the recording surface of the disc-shaped recording medium is not limited to the configuration in which the information processing unit 240 is supported by a pair of guide shafts and moved by the rotation of the lead screw. Any configuration can be used, such as a configuration in which it is supported by a magnetic force and moved by switching the polarity.

[0054] Furthermore, the force described for the configuration for rotating the pedestal portion 210 may be any moving form, such as a configuration in which the pedestal portion moves forward and backward from the case body 110 as described above. And as a structure to move, any method other than the structure using the moving cam 420 and the one using a link mechanism can be applied.

[0055] The structure of the supporting means for supporting the disc-shaped recording medium is as follows. The turntable 222 is provided integrally with a rotating electric motor 221 such as a spindle motor and has a self-checking function for supporting the optical disc 10. For example, a configuration in which it is supported by being supported by a rotor, a configuration in which a peripheral edge is supported and held rotatably, a configuration in which it is supported by being placed like a turntable of a so-called record board, etc. A configuration that supports the displacement can be applied.

[0056] Then, the rotational speed of the optical disk 10 is detected by the optical pickup 242 that does not provide the force sensor 250 described by detecting the rotational speed of the optical disk 10 by the optical sensor 250 and performs the recording process. May be detected. According to this configuration, it can be shared by the optical pickup 242 that does not require a separate optical sensor 250, and the configuration can be simplified.

[0057] In addition, the description has been given of the configuration in which the process of supporting the shaft is repeated when it is determined that the optical disc 10 is in an inappropriate shaft support state. The optical disk 10 may be ejected without performing the process.

[0058] In addition, the specific structure and procedure for carrying out the present invention can be appropriately changed to other structures and the like as long as the object of the present invention can be achieved.

[Effect of Embodiment]

As described above, the difference between the rotation speed of the electric motor 221 for rotation detected by the support rotation speed detection means 610 and the rotation speed of the optical disk 10 mounted on the turntable 222 detected by the disk rotation speed detection means 620. Is calculated by the speed difference calculation means 630, and based on the magnitude of the speed difference calculated by the support state determination means 640, Judge the state. For this reason, an improper shaft support state in which the optical disk 10 is idle with respect to the turntable 222 due to an incomplete shaft support or a defective shaft support can be recognized well, and appropriate reading processing and recording processing are performed. it can.

Industrial applicability

INDUSTRIAL APPLICABILITY The present invention can be used as a disk support detection device that detects a state in which the support means is detachably supported and rotatably supported, a method thereof, a program thereof, a recording medium recording the program, and a disk device.

Claims

The scope of the claims

[1] A disk support detection device for detecting a state in which a disk-shaped recording medium is detachably supported and rotatably supported by a support means,

Support rotation speed detection means for detecting the rotation speed of the support means;

A disk rotational speed detecting means for detecting the rotational speed of the disk-shaped recording medium; a speed difference calculating means for calculating a speed difference between the rotational speed of the supporting means and the rotational speed of the disk-shaped recording medium;

A support state determining means for determining a supported state of the disc-shaped recording medium based on the magnitude of the speed difference;

A disk support detection apparatus comprising:

[2] The disk support detection device according to claim 1,

The support state determination means determines that the disk-shaped recording medium is supported by the support means when the speed difference is larger than a predetermined threshold value.

A disk support detection device characterized by that.

[3] The disk support detection device according to claim 1 or claim 2,

The support state determination means determines that the disc-shaped recording medium is supported by the support means when the speed difference is substantially zero.

A disk support detection device characterized by that.

[4] The disc support detection device according to any one of claims 1 and 3, wherein the disc rotation speed detection means is a state of light reflected by irradiating the disc-shaped recording medium. Based on the above, the rotational speed of the disc-shaped recording medium is detected.

A disk support detection device characterized by that.

[5] The disk support detection device according to claim 4,

The disk rotation speed detecting means is an optical pickup that performs at least one of a reading process for reading information recorded on the disk-shaped recording medium and a recording process for recording information on the disk-shaped recording medium. The rotational speed of the disk-shaped recording medium is detected based on the state of the light reflected on the detected disk-shaped recording medium. A disk support detection device characterized by that.

[6] The disk support detection apparatus according to any one of claims 1 to 5, wherein the support means is rotated by driving a spindle motor and the spindle motor so that the disk-shaped recording medium can be attached and detached. A turntable that supports the shaft,

The shaft rotation speed detection means detects the rotation speed of the support means based on at least one of the electric power for driving the spindle motor and the rotation speed of the turntable.

A disk support detection device characterized by that.

[7] Support means for supporting the disk-shaped recording medium so as to be detachable and rotatable,

7. The disk support detection device according to claim 1, wherein a state in which the disk-shaped recording medium is supported by the support means is detected.

A disk apparatus comprising:

[8] A disk support detection method for detecting a state in which a disk-shaped recording medium is detachably supported and rotatably supported by a support means,

Recognizing the rotational speed of the support means and the rotational speed of the disc-shaped recording medium,

Calculate the difference between these recognized rotational speeds,

Based on the calculated difference in rotational speed, the support state of the disc-shaped recording medium by the support means is determined.

A disk support detection method characterized by the above.

[9] Let the computing means function as the disk support detection device according to any one of claims 1 to 6.

A disk support detection program characterized by that.

[10] Let the computing means execute the disk support detection method according to claim 8.

A disk support detection program characterized by that.

[11] The disk support detection program according to claim 9 or claim 10 is recorded so as to be readable by an arithmetic means.

The recording medium which recorded the disk support detection program characterized by the above-mentioned.