JP2010092572A - Optical disk device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To secure an ejection amount required for safe disk unloading even to an optical disk having a small outside diameter in an optical disk device into which optical disks having different outside diameters can be alternatively loaded. <P>SOLUTION: An optical sensor is provided on an optical pickup and whether the optical disk has a small outside diameter or a large outside diameter is discriminated based on level change of an output signal of the optical sensor upon loading of the optical disk. When the disk has the small outside diameter as the result of discrimination, upon unloading, the optical sensor is previously moved, prior to unloading movement, to such a position that the output signal of the optical sensor is made to be an off-state when a half or more of a flat surface area of the disk having the small outside diameter is ejected to an external part of the optical disk device and, upon unloading, the output signal of the optical sensor is made to be an on-state and an on-state of a loading motor is maintained to continue unloading drive until a half or more part of a center hole of the disk having the small outside diameter is ejected to the external part of the optical disk device. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an optical disc apparatus that can selectively load optical discs having different outer diameters, such as 8 cm discs and 12 cm discs, and more particularly to a configuration for unloading loaded small outer diameter discs, such as 8 cm discs.

  As conventional techniques related to the present invention, for example, JP 2000-315347 A (Patent Document 1), JP 2000-105957 A (Patent Document 2), and JP 2006-286178 A (Patent Document 3). There is what is described in. In Japanese Patent Laid-Open No. 2000-315347, in a slot-in type optical disk reproducing apparatus, a disk detection unit 13 for detecting a disk size after completion of disk loading and a 12 cm disk have reached a predetermined ejection position on a chassis. A first disk discharge detection unit 17 for detecting this, and a second disk discharge detection unit 20 for detecting that the 8 cm disk has reached a predetermined discharge position. The detection signal A output from the unit 13 is checked, the disc size loaded this time is discriminated, the discriminating result is stored as SIZE data, and discriminated and stored at the time of disc loading at unloading. Based on the SIZE data, in the case of a 12 cm disc, the first disc ejection detector 1 After waiting for the detection signal C to become L level and further waiting for 130 ms, the loading motor is stopped. On the other hand, in the case of an 8 cm disc, the detection signal D of the second disc ejection detection unit 20 is A technique is described in which the loading motor is stopped after waiting for the L level and a waiting time of 130 ms is further secured, and a discharge amount suitable for each disk is secured. Japanese Patent Laid-Open No. 2000-105957 discloses In the disc player, a loading roller 2 and sensors a and b are fixed inside and behind the loading roller 2 and the sensor a detects the rear end of the disc after being pulled in. Detects whether the pulled-in disk is a 12cm disk or an 8cm disk. A technique is described in which it is detected that the rear end of each disk has come off and the driving of the loading roller 2 is controlled by the detection signals of the sensors a and b to control the pulling and discharging of the disk. In Japanese Patent Laid-Open No. 2006-286178, in an optical disc drive, an optical pickup head set with the size of the loaded optical disc as the initial position on the outer circumference side of the track reaches the disc substrate from the outer circumference side of the optical disc and is irradiated with laser. A technique is described in which a blank time until light reflection is started is detected and determined. Regarding the ejection of the optical disk, it is described that the optical disk can be ejected quickly with a sufficient ejection length and an appropriate ejection force when a ejection signal is received in response to pressing of the ejection button.

JP 2000-315347 A JP 2000-105957 A JP 2006-286178 A

  Among the above-described conventional techniques, in the technique described in Japanese Patent Laid-Open No. 2000-315347, a disk detection unit 13 for detecting a disk size, a first disk discharge detection unit 17 for discharging a 12 cm disk, and a first for discharging an 8 cm disk. Since a total of three detection units (sensors) of the two-disc ejection detection unit 20 are required and the number of detection units is large, there is a possibility that the cost of parts and the cost of assembly / adjustment may increase. In the technique described in Japanese Patent Laid-Open No. 2000-105957, since the loading roller 2 and the two sensors a and b are used, the disk surface is easily damaged, and the cost of parts and assembly / adjustment increase. There is a risk. In the technique described in Japanese Patent Application Laid-Open No. 2006-286178, the size of the optical disk is determined in a state where the optical disk is loaded in the apparatus. Therefore, the disk size cannot be determined during loading. It is also considered difficult to shift to an unloading operation according to the disk size during loading.

An object of the present invention is to select optical disks having different outer diameters (hereinafter, an optical disk having a larger outer diameter is referred to as a large outer diameter disk and an optical disk having a smaller outer diameter is referred to as a small outer diameter disk) in view of the above-described prior art. In an optical disk device that can be loaded in a small amount, it is possible to secure a sufficient amount of discharge even when a disk is ejected, even for small outer diameter disks, under conditions where the increase in parts cost and assembly / adjustment cost is suppressed and the increase in device space is suppressed. In addition, it is possible to shift to an unloading operation according to the disk size even during loading.
An object of the present invention is to solve such a problem, and in an optical disc apparatus capable of selectively loading optical discs having different outer diameters, particularly when ejecting a small outer disc, the signal surface (disc surface) of the small outer disc It is an object to provide a technology that can improve the usability of the apparatus by allowing the information to be ejected in a state where the information is recorded or the area where the information is recorded) without being contaminated with fingerprints or scratches. .

  In order to solve the above problems, in the present invention, in an optical disc apparatus capable of selectively loading optical discs having different outer diameters, an optical sensor having a light emitting means and a light receiving means is provided on an optical pickup, Based on the level change of the output signal of the optical sensor, it is discriminated whether the loaded optical disk is a small outer diameter disk or a large outer diameter disk. Prior to this, the optical sensor is moved in advance to a position where the output signal of the optical sensor is turned off when more than half of the plane area of the small outer diameter disk is ejected from the optical disk apparatus. When unloading the small outer diameter disk, more than half of the center hole of the small outer diameter disk is outside the optical disk device. Until issued, a configuration to continue unloading drive to maintain the loading motor ON state (driven state) by the output signal of the optical sensor in the ON state.

  According to the present invention, in an optical disc apparatus that can selectively load optical discs having different outer diameters, a small outer diameter can be obtained under the condition that the increase in parts cost and assembly / adjustment cost is suppressed and the increase in the apparatus space is suppressed. A sufficient discharge amount can be secured even when the disc is discharged. Further, it is possible to shift to an unloading operation according to the disk size even during loading.

Embodiments of the present invention will be described below with reference to the drawings.
1 to 8 are explanatory diagrams of an optical disc apparatus as an embodiment of the present invention. FIG. 1 is a diagram showing an external appearance of an optical disc apparatus as an embodiment of the present invention, FIG. 2 is a block diagram showing an internal configuration of the optical disc apparatus of FIG. 1, and FIG. 3 is a disc placement side of the optical disc apparatus of FIG. FIG. 4 is a diagram showing the internal configuration of the optical disk apparatus of FIG. 2 opposite to the disk mounting side, and FIG. 5 is a diagram showing the light during disk loading and unloading in the optical disk apparatus of FIG. FIG. 6 is a diagram for explaining the operation of the optical disc apparatus in FIG. 2 during loading of the disk, FIG. 7 is a diagram for explaining the operation of the optical disc apparatus in FIG. 2 during unloading, and FIG. FIG. 7 is a flowchart of a disc loading operation and a disc unloading operation in the optical disc apparatus of FIG.

  In FIG. 1, reference numeral 1 denotes an optical disc apparatus as an embodiment of the present invention, which is a slot-in type thin type having a configuration capable of alternatively loading 12 cm discs and 8 cm discs having different outer diameters. An optical disk device 66 is a top cover that covers the upper surface side (Z-axis direction side) of the optical disk device 1, 67 is a bottom case that covers the device bottom surface side (−Z-axis direction side), and 10 is an optical disk chucker. A clamper 60 is a front panel provided on the front of the apparatus, and a 60a is a 12 cm disk large outer diameter optical disk and an 8 cm disk small outer diameter optical disk (both not shown) alternatively. An opening 40 in the front panel 60 for insertion (insertion in the Y-axis direction) or removal from the apparatus is provided in the optical disc apparatus 1. Eject button for issuing an instruction for ejection of al of the optical disk, 65 is an LED for displaying the operating status of the device.

In the optical disc apparatus 1, an optical disc (12 cm disc or 8 cm disc) is manually held by a user, for example, by holding the peripheral edge of the center hole of the optical disc and the outer peripheral edge of the disc with fingers. It is inserted into the optical disc apparatus 1. When the inserted optical disk reaches a predetermined insertion position, the optical disk is supported by a disk moving mechanism (not shown) driven by a loading motor (not shown) and moved (loaded) in the Y-axis direction. The device 1 is pulled to a position where it can be chucked, and is chucked by the clamper 10 at that position, so that a recording or reproducing operation can be performed. When the optical disk is taken out of the optical disk apparatus 1 due to the end of the recording or reproducing operation, etc., the optical disk is unloaded from the chucked state by the clamper 10 and then driven by a loading motor. Is moved (unloaded) in the −Y-axis direction by the unit, and the user does not touch the signal surface of the optical disk (the area where information is recorded or the area where information is recorded) on the outside of the opening 60a. The position where the optical disk can be held, for example, the peripheral edge of the center hole of the optical disk and the outer peripheral edge of the disk are moved to a position where the user can securely hold the optical disk with a finger. In the present invention, the optical disk is a position at which more than half of the disk flat area is ejected to the outside of the optical disk apparatus 1, whether it is a 12 cm disk (large outer diameter disk) or an 8 cm disk (small outer diameter disk). More than half of the center hole is moved by a disk moving mechanism driven by a loading motor to a position where it can be ejected to the outside of the opening 60a (= outside of the optical disk apparatus 1). The loading motor is turned off (driving stopped) at the take-out possible position, and the optical disk is pulled out from the opening 60a by the user, for example, supporting the peripheral edge of the central hole of the optical disk and the peripheral edge of the disk with fingers.
Hereinafter, the same reference numerals as those in FIG. 1 are used for the components in the optical disc apparatus 1 in FIG. 1 used in the description.

FIG. 2 is a block diagram showing an internal configuration of the optical disc apparatus 1 of FIG.
In FIG. 2, 1 is an optical disc apparatus as an embodiment of the present invention, 2 is an optical disc (12 cm disc or 8 cm disc) on which information is recorded or information is recorded, and 3 is an optical disc 2 that is driven to rotate. The disk motor 10 is fixed to the rotating shaft of the disk motor 3 and is inserted into the center hole of the optical disk 2 to chuck the optical disk 2. 4 is an optical pickup for irradiating the optical disk with laser light. An objective lens constituting an optical system of the optical pickup 4, a laser diode that generates laser light in the optical pickup 4, a laser drive circuit that drives the laser diode 6 in the optical pickup 4, and 8 Reflected laser from the disk surface of the optical disk 2 or the signal surface in the disk surface through the objective lens 5 The light receiving unit 9 for receiving the light and outputting an electric signal corresponding to the reflected laser light is fixed on the optical pickup 4 and has a light emitting unit and a light receiving unit therein, and the disc surface of the optical disc 2 or the disc surface An optical sensor that emits light from the light emitting means to the signal surface inside and outputs an electrical signal corresponding to the reflected light, 20 is a detection unit that detects a level change of the output signal output from the optical sensor 9, and 11 is The disk motor drive circuit 17 for rotating the disk motor 3 includes a linear guide member (not shown), a lead screw member (not shown), and the like, and the optical pickup 4 is arranged in a substantially radial direction of the optical disk 2. The pick-up moving mechanism unit 18 is moved to the pick-up moving mechanism unit 1 by rotationally driving a lead screw member (not shown) in the pick-up moving mechanism unit 17. , 19 is a slide motor drive circuit for driving the slide motor 18, and 12 is a mechanical deck on which the disk motor 3, the optical pickup 4, the pickup moving mechanism 17, the slide motor 18 and the like are fixed. The member 200 is a traverse unit including the mechanical deck member 12, the clamper 10, the disk motor 3, the optical pickup 4, the pickup moving mechanism 17, the slide motor 18, and the like, and 13 is the traverse unit 200. Is an elevating mechanism unit that rotates and displaces around a fulcrum with respect to a reference plane in the optical disc apparatus 1. The detection unit 20 detects a level change of the output signal of the optical sensor 9, and as the level change, the output signal of the optical sensor 9 changes from the on state to the off state, and after the on state is turned on, the detection unit 20 enters the off state. It has the structure which detects any one or both of time to. The elevating mechanism unit 13 rotationally displaces the traverse unit 200, moves the clamper 10 upwardly to the top cover 66 side (Z-axis direction in FIG. 1), and moves the clamper 10 into the center hole of the optical disc 2. The optical disk 2 is chucked by the clamper 10, or after chucking, the clamper 10 is moved down along with the optical disk 2 in the −Z-axis direction (FIG. 1), and the optical disk 2 is moved together with the clamper 10 for recording or reproducing operation. Or make it rotatable.

  Reference numeral 14 denotes a disk moving mechanism for loading and unloading the optical disk 2 with respect to the optical disk apparatus 1, 15 denotes a loading motor for driving the disk moving mechanism 14 and the lifting mechanism 13, and 16 denotes a loading. It is a loading motor drive circuit that rotationally drives the motor 15. Here, “loading” means that the optical disk 2 manually inserted from the opening 60 a (FIG. 1) of the front panel 60 is moved into the Y axis in the optical disk apparatus 1 by the disk moving mechanism 14 driven by the loading motor 15. The term “unloading” means that the optical disc 2 released from the chucking state in the optical disc apparatus 1 is moved by the loading motor 15. This means that the optical disk device 1 is moved in the −Y-axis direction (FIG. 1).

  In FIG. 2, 41 is an eject signal source that outputs an eject signal when the eject button 40 is pressed, 30 is a syscon as a control unit that controls the entire optical disc apparatus 1, and 31 is in the syscon 30. The disk motor control unit 32 that controls the disk motor drive circuit 11 and controls the drive of the disk motor 3 is located in the system controller 30 and controls the slide motor drive circuit 19 to control the drive of the slide motor 18. A slide motor control unit 33 for controlling the loading motor drive circuit 16 in the syscon 30 and controlling the driving of the loading motor 35 is a microcomputer in the syscon 30, and 351 is a microcomputer 35. When the optical disc 2 is loaded, the detection result at the detection unit The disc discriminating means 352 as a first control means for discriminating whether the optical disc 2 to be loaded is an 8 cm disc or a 12 cm disc is configured in the microcomputer 35. Prior to controlling the drive of the slide motor 18, the optical pickup 4 is moved to generate a first movement instruction signal for setting the optical sensor 9 to a first position set in advance. When the loaded optical disc 2 is an 8 cm disc as a result of discrimination by the discriminating means 351, when unloading the 8 cm disc, the optical pickup 4 is controlled by controlling the driving of the slide motor 18 prior to the unloading movement. To move the optical sensor 9 to the preset second position. A pickup movement instruction signal generator as a second control means for generating a second moving instruction signal. The pickup movement instruction signal generation unit 352 serving as the second control means uses the optical sensor 9 as the first movement instruction signal when loading a 12 cm disk or an 8 cm disk during the loading movement of the 8 cm disk. The first position is the position at which the level of the output signal of the optical sensor 9 changes as the position of the optical sensor 9 changes from the inside to the outside of the orthographic projection area of the disk surface of the 8 cm disk or the signal surface within the disk surface. A movement instruction signal for moving to the position is generated, and when the 8 cm disk is unloaded, the optical sensor 9 is used as the second movement instruction signal so that half or more of the flat area of the 8 cm disk is the optical disk device 1. When the light sensor 9 is discharged outside the opening 60a of the front panel 60, the position of the optical sensor 9 is the 8 cm display. Move to the second position, which is the position where the level of the output signal of the optical sensor 9 changes to the off state by moving from the inside to the outside of the orthographic projection area of the disk surface or the signal surface in the disk surface. An instruction signal is generated. That is, the pickup movement instruction signal generation unit 352 serving as the second control means performs the loading operation in common when the optical disk 2 is loaded, whether the optical disk 2 is a 12 cm disk or an 8 cm disk. Prior to this, the pickup movement mechanism unit 17 is controlled by the first movement instruction signal via the slide motor control unit 32, the slide motor drive circuit 19 and the slide motor 18 to move the optical sensor 9 to the first position. . The first position is such that the position of the optical sensor 9 changes from the inside to the outside of the orthographic projection area of the disk surface of the 8 cm disk or the signal surface in the disk surface during the loading movement of the 8 cm disk. This is the position where the level change of the output signal occurs. In addition, the pickup movement instruction signal generation unit 352, when unloading the optical disk 2, only when unloading the 8 cm disk, prior to the unloading operation, in response to the second movement instruction signal, The pickup moving mechanism 17 is controlled via the motor drive circuit 19 and the slide motor 18 to move the optical sensor 9 to the second position. The second position is such that when more than half of the plane area of the 8 cm disk is discharged outside the opening 60a of the front panel 60, the position of the optical sensor 9 is the disk surface of the 8 cm disk or the signal surface within the disk surface. This is a position where the level of the output signal of the optical sensor 9 changes from the inside to the outside of the orthographic projection area and is turned off.

  In FIG. 2, an unloading instruction signal 353 is configured in the microcomputer 35 and generates a signal (unloading instruction signal) for instructing the start of an unloading operation based on the eject signal from the eject signal source 41. The generation unit 50 is a memory.

  In the configuration of FIG. 2, when the apparatus power is turned on and the optical disc is loaded, the pickup movement instruction signal generation unit 352 in the microcomputer 35 generates the first movement instruction signal before the loading operation, and the microcomputer 35 controls the slide motor control unit 32 based on the first movement instruction signal. The slide motor control unit 32 controls the rotation of the slide motor 18 via the slide motor drive circuit 19. The pickup moving mechanism 17 is driven by the rotation of the slide motor 18, and the optical pickup 4 is moved in the substantially radial direction of the optical disk. By the movement of the optical pickup 4, the optical sensor 9 is moved to the first position and turned on. When the optical disk 2 is manually inserted by the user through the opening 60a of the front panel 60 with the optical sensor 9 in the first position, the loading motor is used when the optical sensor 9 reaches a predetermined position in the apparatus after insertion. 15 is driven by the loading drive circuit 16 to be turned on. As a result, the disk moving mechanism unit 14 starts the loading operation of the inserted optical disk. During the loading operation of the optical disc, the detection unit 20 monitors the level of the output signal of the optical sensor 9 during the loading movement of the optical disc, and detects the level change of the output signal. As the level change, one or both of the change from the on state to the off state of the output signal of the optical sensor 9 and the time from the on state to the off state are detected. When the level change of the output signal of the optical sensor 9 is detected in the detection unit 20, the disc discriminating means 351 discriminates that the loaded optical disc is an 8 cm disc, and the information of the discrimination result is stored in the memory. 50. After the information is stored, the optical sensor 9 is turned off. The optical disc determined to be the 8 cm disc is then chucked by, for example, the clamper 10 and rotated at a predetermined speed by the disc motor 3, and the laser light generated by the laser diode 6 is applied to the signal surface within the disc surface. Irradiated through the objective lens 5, information is reproduced or recorded.

  Thereafter, when the optical disc determined to be an 8 cm disc is unloaded and taken out of the optical disc apparatus 1, an eject signal is output from the eject signal source when the eject button 40 is pressed. Based on the eject signal, the microcomputer 35 first checks whether or not discrimination result information indicating that the disc is an 8 cm disc discriminated by the disc discriminating means 351 at the time of loading is stored (stored) in the memory 50. As a result of the check, when the discrimination result information of the 8 cm disc is stored (stored) in the memory 50, the discrimination result information is read from the memory 50, and a pickup movement instruction signal is generated based on the discrimination result information. The unit 352 generates the second movement instruction signal, and controls the slide motor control unit 32 based on the second movement instruction signal. The microcomputer 35 performs the above check even when the 8 cm disc is not discriminated at the time of loading.

  The slide motor control unit 32 controls the rotation of the slide motor 18 via the slide motor drive circuit 19. The pickup moving mechanism 17 is driven by the rotation of the slide motor 18, and the optical pickup 4 is moved in the substantially radial direction of the optical disk. As the optical pickup 4 moves, the optical sensor 9 is moved to the second position and turned on. Thereafter, with the optical sensor 9 in the second position, the loading motor 15 is driven by the loading drive circuit 16 to be turned on. As a result, the disc moving mechanism unit 14 starts an unloading operation of the optical disc, that is, the 8 cm disc, and the 8 cm disc is moved in the −Y axis direction. At this time, the loading motor control unit 33 is controlled by the microcomputer 35 and controls the driving of the loading motor 15 according to the ON state and the OFF state of the output signal of the optical sensor 9. That is, the microcomputer 35 controls the loading motor control unit 33 so that the loading motor control unit 33 continues to drive the loading motor 15 until the detection unit 20 detects the level change of the output signal of the optical sensor 9. . Since the optical sensor 9 is in the second position, the loading motor control unit 33 continues to drive the loading motor 15 until more than half of the flat area of the 8 cm disk is discharged outside the opening 60a of the front panel 60. That is, by disposing the optical sensor 9 at the second position, the output signal of the optical sensor 9 is turned on until the half of the plane area of the 8 cm disc is discharged to the outside of the optical disc apparatus 1. The loading motor 15 is kept on and the unloading drive is continued. Only when more than half of the flat area of the 8 cm disc is discharged outside the opening 60a of the front panel 60, the level change of the output signal of the optical sensor 9, that is, the change of the output signal from the on state to the off state is detected. 20, the microcomputer 35 causes the loading motor control unit 33 to turn off (stop) the driving of the loading motor 15. When the driving of the loading motor 15 is turned off (stopped), more than half of the center hole of the 8 cm disk is discharged outside the opening 60a of the front panel 60. The 8 cm disc can be taken out from the opening 60a by supporting the outer periphery and the outer peripheral edge with fingers.

When the detection unit 20 does not detect a change in level of the output signal of the optical sensor 9 during loading, the disc discriminating means 351 determines that the loaded optical disc is not an 8 cm disc, that is, a 12 cm disc. The information of the determination result is not stored in the memory 50. Thereafter, when the optical disc determined to be the 12 cm disc is unloaded and taken out of the optical disc apparatus 1, the output signal of the optical sensor 9 is not used. In this case, when the eject button 40 is pressed and an eject signal is output from the eject signal source, the microcomputer 35 controls the loading motor control unit 33 to control the rotation of the loading motor 15 to The disc moving mechanism 14 is unloaded until more than half of the flat area is discharged outside the opening 60a of the front panel 60 and more than half of the center hole is discharged outside the opening 60a of the front panel 60. Make it. When the 12 cm disc is unloaded, the pickup movement instruction signal generation unit 352 is not activated, and the optical sensor 9 is not moved to the second position.
Hereinafter, the same reference numerals as those in FIG. 2 are used for the components in the configuration of FIG. 2 used in the description.

3 is a diagram showing the internal configuration of the optical disc apparatus 1 in FIG. 2 on the disc mounting side, and FIG. 4 is a diagram showing the internal configuration of the optical disc apparatus 1 in FIG.
In FIG. 3, the optical sensor 9 is fixed on the optical pickup 4 and can be moved together with the optical pickup 4 in a substantially radial direction of an optical disc (not shown). The traverse unit 200 pivots and displaces with respect to the reference plane in the optical disc apparatus 1 with the positions of the points Q ₁ and Q ₂ as fulcrums, and chucks the optical disc by moving the clamper 10 upwardly in the Z-axis direction. After the chucking, the clamper 10 is moved down in the −Z-axis direction so that the optical disk can be rotated for recording or reproducing operation.

  3, 320 is a chassis constituting the apparatus base, 301 is an insert roller that comes into contact with the outer periphery of the optical disk inserted from the opening 60a of the front panel 60, and 305 is attached so that the insert roller 301 can rotate. An insert arm 302 that is pivotally mounted around a fulcrum on the chassis 320 and that, together with the insert roller 301, is further pulled into the apparatus, that is, moved in the Y-axis direction by loading, is loaded. A guide member 308 that supports the optical disk with a guide surface when the optical disk moves in the apparatus while abutting on the outer periphery, is a disk guide to which the guide member 302 is attached and is rotatable around a fulcrum on the chassis 320 , 303 is an unloader when loading of the optical disk is completed. An eject roller 309 that abuts on the outer periphery of the optical disc at the time of ding (ejection) and emergency eject (discharging the disc in an emergency) is rotated around a fulcrum on the chassis 320 so that the eject roller 303 is rotatably mounted. An eject arm that is movably mounted and unloads (emits) or ejects by moving the optical disk in the -Y-axis direction together with the eject roller 303 during unloading (ejection) and emergency ejection. At the time of loading and when loading is completed, the disk roller 310 that contacts the outer periphery of the optical disk can be rotated around a fulcrum on the chassis 320 by mounting the disk roller 304 rotatably. At the time of loading of the optical disk and at the completion of loading, the disk lever 304, which supports the optical disk, together with the disk roller 304, is coupled to the insert arm 305 and is configured to be rotatable around a fulcrum. This is an action lever that rotates and displaces the insert arm 305 based on the driving force of the loading motor 350.

  In FIG. 4, a screw 26 is provided on the surface, and a lead screw member 28a, 28b guides the movement of the optical pickup 4 by moving the optical pickup 23 in the substantially radial direction of the optical disk by the rotation of the screw. A guide member 351 is a worm gear fixed to the output shaft of the loading motor 15, 360 is a gear train, 370 is a function lever driven by the gear train 360, and 370 r is driven from a gear unit at the last stage of the gear train 360. The rack portion on the function lever 370 to which force is transmitted, 324 is a loading switch for turning the loading motor 15 on and off, 325 is an eject switch for detecting that the function lever 370 has moved to the eject position, and 326 is a function switch Lever 370 A mechanical mode switch 80 for detecting that the disk device 1 has moved to a position where recording or reproducing operation can be performed; 80, a loading motor drive circuit 16, a disk motor drive circuit 11, a slide motor drive circuit 19, a memory 50, and an eject signal source 41, a control board provided with a syscon 30, a loading switch 324, an eject switch 325, a mechanical mode switch 326, and the like.

In the above configuration, the function lever 370, the insert roller 301, the insert arm 305, the action lever 306, the eject roller 303, the eject arm 309, the disc roller 304, the disc lever 310, the guide member 302, and the disc guide 308 are included in the disc moving mechanism section 14. Configure. Further, the lead screw member 26 guide members 28 a and 28 b constitute the pickup moving mechanism unit 17. At the time of loading the optical disk, the function lever 370 transmits the driving force of the loading motor via the worm gear 351, the gear 360, and the rack part 370r, is moved and displaced in the Y-axis direction, and operates the disk moving mechanism part 14. The optical disk is moved in the Y-axis direction (loading movement). When the optical disk is unloaded, the driving force of the loading motor is transmitted to the function lever 370 via the worm gear 351, the gear 360, and the rack portion 370r, and is moved and displaced in the −Y-axis direction. Operate to move the optical disk in the -Y-axis direction (unloading movement).
When the components in the configuration of FIGS. 3 and 4 are used in the following description, the same reference numerals as those in FIGS. 3 and 4 are used.

FIG. 5 is an explanatory diagram of the position of the optical sensor 9 during loading and unloading in the optical disc apparatus 1 of FIG.
In FIG. 5, P ₁ is a _{first position} where the optical sensor 9 is moved before the loading movement of the optical disk 2, and P ₂ is a disk determination that the loaded optical disk 2 is an 8 cm disk. The second position, A, where the optical sensor 9 is moved prior to the unloading movement of the optical disk 2 when determined by the means 351, is the center hole of the 8 cm disk and the 12 cm disk (8 cm disk). And the 12 cm disc has a central hole of the same diameter), and the optical disc, which is an 8 cm disc or a 12 cm disc, is manually inserted from the opening 60a (FIG. 1) of the front panel 60 by the user. to be inserted, a line indicating the center hole position when it reaches the loading operation start position, a _8, the center hole a A line indicating the maximum radius position of the area of the disk surface of the 8 cm disk or the signal surface within the disk surface when in position, A ₁₂ is the disk surface of the 12 cm disk or the disk surface when the center hole is at the A position A line B indicating the maximum radius position of the signal surface area in the inside, B is a line indicating the position of the center hole of the 8 cm disk and the 12 cm disk, and the optical disk which is the 8 cm disk or the 12 cm disk is loaded and moved in the Y-axis direction. , A line indicating the center hole position when the chucker 10 (FIGS. 1 and 2) reaches a position where chucking is possible, B ₈ is the disk surface of the 8 cm disk or the disk surface when the center hole is at the B position lines indicating the maximum radial position of the region of the signal surface of the inner, B _12, the disk surface of the 12cm disc when the center hole is in the B position or該De Is a line indicating the maximum radial position of the region of the signal surface of the disk surface.

C is a line indicating the position of the center hole of the 8 cm disc and the 12 cm disc. The optical disc which is the 8 cm disc or the 12 cm disc is unloaded in the −Y-axis direction, and half of the flat area of the optical disc is the front surface. line indicating the center hole position when exiting outside the opening 60a of the panel 60 (FIG. 1), C _8, the center hole of the 8cm disc surface or signal surface of the disk surface of the disk when in position C lines indicating the maximum radial position of the region, C _12, the center hole line indicating the maximum radial position of the region of the disk surface or the signal surface of the disk surface of the 12cm disc when in the position C, D is, 8 cm disc And a line indicating the position of the center hole of the 12 cm disc, and an optical disc that is an 8 cm disc or a 12 cm disc is inserted by the user in the −Y axis direction. Line indicating position when pulled out by moving, D _8, the center hole is a line indicating the maximum radial position of the region of the disk surface or the signal surface of the disk surface of the 8cm disc when in the D position, D ₁₂ Is a line indicating the maximum radius position of the area of the disk surface of the 12 cm disk or the signal surface within the disk surface when the center hole is at the D position.

In FIG. 5, m−m is a straight line indicating the moving direction of the optical pickup 4, n−n is a straight line indicating the direction in which the optical disk moves during loading and unloading, and pp is the first pass over the optical sensor 9 at a position P _1, parallel to the line n-n (= parallel to the Y axis) linear, q-q passes along the optical sensors 9 in the second position P _2, the straight line n A straight line parallel to −n (= parallel to the Y axis), a ₁ is a point where the straight line pp intersects the line A ₈ on the Y axis direction side with respect to the position of the line A (position of the center hole), a ₂ is a point where the straight line pp intersects the line A ₈ on the −Y axis direction side with respect to the position of the line A (position of the center hole), and b ₁ is a straight line pp of the line B ₈ . point of intersection in the Y-axis direction side than the position of the line B (the position of the center hole), b ₂ linearly p-p is the line B _8, the position of the line B (the center Point of intersection in the -Y-axis direction side than the position of the hole), c ₂ is linear q-q is a line C _8, the point of intersection in the Y-axis direction side than the position of the line C (the position of the center hole), d ₂ is linear q-q is the line D _8, a point of intersection in the Y-axis direction side than the position of the line D (position of the center hole).

5, when the optical disk is loaded is inserted into the apparatus, when the position of the center hole is moved from the position of line A to the position of the line B, in case of 8cm disc, the first position P ₁ is 8cm The level of the output signal of the optical sensor 9 changes because it enters or leaves the area of the disk surface of the disk or the signal surface within the disk surface. That is, the point a ₁ moves over the optical sensor 9 at the first position P ₁ to the point b ₁ , and the point a ₂ passes through the optical sensor 9 at the first position P _1. to go to b _2, and when the point a ₁ passes through the first position P _1, to the case where the point a ₂ passes through the first position P _1, the level of the output signal of the optical sensor 9 is changed To do. When the point a ₁ passes through the first position P _1, when the output signal of the optical sensor 9 is changed from the OFF state to the ON state, a point a ₂ passes through the first position P _1, again from the ON state Change to off state. However, in the case of a 12 cm disc, when the position of the center hole is moved from the position of line A to the position of line B, the first position P ₁ is the area of the disc surface of the 12 cm disc or the signal surface within the disc surface. Is in. For this reason, the level change of the output signal of the optical sensor 9 is not detected. Therefore, when the level change of the output signal of the optical sensor 9 is detected during loading of the optical disc, the optical disc to be loaded is an 8 cm disc, and when the level change of the output signal of the optical sensor 9 is not detected, loading is performed. The optical disk is assumed to be a 12 cm disk.

Further, in FIG. 5, in the case of 8cm disc, during unloading, the optical sensor 9, prior to the unloading operation, is moved to the second position P _2. When the position of the center hole of the 8 cm disc is at the position of the line C, the position of the point c ₂ coincides with the second position P ₂ . Accordingly, the optical sensor 9 in the second position P ₂ is a boundary when the position of the center hole of the 8cm disc is in the position of the line C, the level of the output signal changes. When the level change of the output signal of the optical sensor 9 is detected, the loading motor 15 is turned off. For this reason, the unloading operation by the driving force of the loading motor 15 is stopped in a state where half of the flat area of the 8 cm disc is ejected from the opening 60a of the front panel 60. Thereafter, the 8 cm disc is manually taken out by the user to the outside of the optical disc apparatus 1 through a position where the center hole is at the position of the line D.
Even when the components in the configuration of FIG. 5 are used in the following description, the same reference numerals as those in FIG. 5 are used.

FIG. 6 is an explanatory diagram of an operation when loading an optical disc in the optical disc apparatus 1 of FIG.
6, (a) shows the on / off timing of the apparatus power supply, (b) shows the on (drive) and off (non-drive) timing of the slide motor 18, and (c) shows the light The timing of movement of the pickup 4 is shown, (d) shows the timing of manual insertion of the optical disk 2 and the timing of loading movement by the loading motor 15, and (e) shows the timing of turning on (driving) the loading motor 15. , (F) shows the lighting timing of the optical sensor 9, (g) shows the ON / OFF timing of the output signal based on the reflected light of the optical sensor 9, and (h) shows the disc discriminating means 351. A discrimination signal when it is discriminated that the disc is an 8 cm disc is shown, and (i) shows a timing when the discrimination signal is stored (stored) in the memory 50.

When the apparatus power supply is turned on at time t ₀ ((a)), the microcomputer 35 generates a first movement instruction signal in the pickup movement instruction signal generation unit 352 and controls the slide motor based on the first movement instruction signal. The unit 32 is controlled. Thus, the slide motor 18 is driven via the slide motor drive circuit 19 ((b)), the pickup moving mechanism 17 is driven to move the optical pickup 4, and the optical sensor 9 is moved from the initial position _P01 to the first position. Is moved to position P ₁ (FIG. 5) ((c)). Slide motor 18, the optical sensor 9 is stopped at the time point _{t 1} that has reached the first position _{P 1} ((b)). Thereafter, the optical disk at the time t ₂ is inserted manually through the opening 60a of the front panel 60, the loading switch 324 reaches a position to operate the loading motor 15 is turned on at time point t _3, the disc moving mechanism 14 Is loaded to load the optical disk ((d), (e)). Light sensor 9 is turned on at time _{t 1} which is moved to the first position _{P 1} ((f)). When an 8 cm disc is inserted, the optical sensor 9 indicates that the output signal from the reflected light is the optical sensor 9 after the loading operation starts (time point t ₃ ), the disc surface of the 8 cm disc or the signal surface area in the disc surface. , Ie, when the point a ₁ (FIG. 5) reaches the first position P ₁ (time point t ₄ ), the state changes from the off state to the on state. Thereafter, the output signal, the point _{a 2} (FIG. 5) is again changed to the OFF state at time _{t 5} that has passed through the first position _{P 1} ((g)). The on-state duration time Δt of the output signal of the optical sensor 9 is Δt = t ₅ −t ₄ , and the disk surface of the 8 cm disk or the signal surface area in the disk surface faces the optical sensor 9 during loading. Corresponds to the time of day. Detector 20, as the level change of the output signal of the optical sensor 9, the output signal at time t ₅ is changed from the ON state to the OFF state, or, one or both of the ON state duration Δt To detect. Disk discriminating means 351, the detection unit 20 receives the detection of the level change of the output signal of the optical sensor 9, the loaded optical disc is discriminated as the 8cm disc, it outputs a determination signal at a time t ₆ ((H)). When performing the disk identification by the on-state duration Delta] t, the disk discriminating unit 351, the on-state duration Delta] t, is compared with the reference time length Delta] t _s which is set in advance, Delta] t <Delta] t _s is satisfied At this time, it is determined that the loaded optical disk is an 8 cm disk, and a determination signal is output.該判by signal (determination result information) is stored (stored) in the memory 50 at time _{t 7} ((i)). Thereafter, the optical disc is further loading movement, when t ₈ reaching the chucking position, the optical sensor 9 is turned off.

FIG. 7 is an explanatory diagram of the operation when the optical disk apparatus 1 of FIG. 2 unloads the optical disk.
In FIG. 7, (a) shows the operation timing of the eject button, (b) shows the on (drive) and off (non-drive) timing of the slide motor 18, and (c) shows the optical pickup 4. (D) shows the timing of lighting of the optical sensor 9, (e) shows the timing of on (drive) and off (non-drive) of the loading motor 15, and (f) shows (G) shows the timing of the chucking release of the optical disc, (h) shows the unloading movement state after the chucking release of the optical disc, (i) Indicates the on / off timing of the output signal based on the reflected light of the optical sensor 9.

In FIG. 7, when the eject button 40 is pressed at time t ₁₀ ((a)), the eject signal from the eject signal source 41 is input to the microcomputer 35. When the 8 cm disc discriminated by the disc discriminating means 351 is taken out of the optical disc apparatus 1, the microcomputer 35 provides discrimination result information indicating that the disc is the 8 cm disc discriminated by the disc discriminating means 351 at the time of loading based on the eject signal. The second movement instruction signal is generated in the pickup movement instruction signal generation unit 352 based on the information read from the memory 50 and the determination result information, and the slide motor control unit 32 is controlled based on the second movement instruction signal. As a result, the slide motor 18 is driven via the slide motor drive circuit 19 ((b)). When the slide motor 18 is driven, the optical pickup 4 is moved by the pickup moving mechanism 17, the optical sensor 9 is moved to the second position P _{2 (Fig.} 5), the slide at the time t ₁₁ to the mobile is terminated The motor 18 is stopped ((b)) and the optical sensor 9 is turned on ((c), (d)). Reflected light from the signal surface of the lighting at the same time as the surface of the optical disc or the disc plane of the optical sensor 9 is generated at the position P ₂ of the second, on the output signal also said time point t ₁₁ of the optical sensor 9 State ((i)). Loading motor 15, the eject signal is turned on at a time _{t 10} which is input to the microcomputer 35 ((e)). Thereafter, the loading motor 15 drives the elevating mechanism 13 to rotationally displace the traverse unit 200 to release chucking of the optical disk (8 cm disk) ((f), (g)). Thereafter, when _{t 12} the rotational displacement is completed the traverse unit 200, the loading motor 15 drives the disc moving mechanism 14 causes the optical disc (8 cm disc) unloaded moves in the -Y-axis direction ((h )).

The optical disk (8 cm disk) is further moved in the −Y-axis direction by the unloading movement, and is a point c ₂ that is the end position on the straight line q-q of the area of the disk surface or the signal surface in the disk surface. (FIG. 5) at the time point t ₁₃ reaching the second position P _{2 (the} position of the optical sensor 9), the output signal of the oN state of the optical sensor 9 is terminated, the output signal is level changes to the oFF state ((I)). As a result, the loading motor 15 is turned off ((e)), and the disk movement by the disk movement mechanism unit 14 is also stopped ((h)). When the movement is stopped, the optical disc (8 cm disc) is in a state where at least half of its flat area is ejected from the opening 60a of the front panel 60, and at least half of the center hole is ejected from the opening 60a of the front panel 60. In this state, the user can manually take out the optical disc (8 cm disc) to the outside of the optical disc apparatus 1 by grasping the peripheral edge of the center hole and the outer peripheral edge of the disc. Light sensor is turned off at time _{t 14} after time _{t 13} ((d)). That is, the optical sensor 9 by arranging the position P ₂ of the second, to over half the plane area of 8cm disc is discharged to the outside of the optical disk apparatus 1, on condition the output signal from the photosensor 9 Thus, the loading motor 15 is kept on and the unloading drive is continued.

FIG. 8 is a flowchart of the disk loading operation and the disk unloading operation in the optical disk apparatus 1 of FIG.
In FIG.
(1) The apparatus power is turned on (step S801).
(2) The microcomputer 35 generates a first movement instruction signal in the pickup movement instruction signal generation unit 352, controls the slide motor control unit 32 based on the first movement instruction signal, and passes through the slide motor drive circuit 19. Then, the slide motor 18 is driven, the pickup moving mechanism 17 is driven, the optical pickup 4 is moved, and the optical sensor 9 is moved to the first position P ₁ (FIG. 5) (step S802). Position P ₁ of the first is the position where the position of the optical sensor 9 in the course loading movement of the 8cm disc is changed from the inside to the outside of the orthographic projection area of the disc surface or the signal surface of the disk surface of the 8cm disc .
(3) When the optical disk is inserted from the opening 60 a of the front panel 60 and the loading switch 324 is turned on, the microcomputer 35 controls the loading motor control unit 33 and the loading motor 15 via the loading motor drive circuit 16. Is rotated to drive the disk moving mechanism unit 14 so that the inserted optical disk is pulled into the apparatus (loading movement) (step S803).
(4) In the first position P ₁ light sensor 9 in the receiving reflected light of light irradiated on the signal surface of the disk surface or the disk surface of the optical disc to be the loading movement from its light emitting means itself The light is received by the means and a signal corresponding to the reflected light is output. Based on the output signal, the detection unit 20 detects a level change of the output signal of the optical sensor 9. As the level change, one or both of the change of the output signal from the on state to the off state and the on state duration time Δt from the on state to the off state are detected (step S804). .
(5) The microcomputer 35 determines whether the optical disk to be loaded is an 8 cm disk or a 12 cm disk based on the detection result of the detection unit 20 in the disk determination unit 351. Basically, it is determined whether or not the disc is an 8 cm disc, and if it is not an 8 cm disc, it is discriminated that it is a 12 cm disc. When the detection unit 20 detects a change from the on state to the off state of the output signal of the optical sensor 9, the disc discriminating unit 351 discriminates that the optical disc to be loaded is an 8 cm disc and outputs the disc. If a change from the on state to the off state of the signal is not detected, it is determined that the disc is a 12 cm disc. The disk discriminating unit 351, the on-state duration Delta] t is shorter than the reference time length Delta] t _s which is set in advance, when Delta] t <Delta] t _s is satisfied, the optical disk is moving the loading is 8cm disc the determination is made that there, Delta] t <when Delta] t _s is not satisfied, it is determined that the optical disk is a 12cm disk (step S805).

(6) When it is determined in step S805 that the loaded optical disk is an 8 cm disk, the microcomputer 35 outputs an 8 cm disk determination signal from the disk determination means 351 (step S806). It is stored (stored) in the memory 50 (step S807).
(7) The microcomputer 35 controls the loading motor control unit 33 to further move the optical disk for loading. At the loading completion position, the lifting motor unit 13 is driven by the loading motor 15 to rotate the traverse unit 200 and cause the clamper 10 to chuck the optical disk. Thereafter, the microcomputer 35 controls the disk motor control unit 31 to rotate the disk motor 3 at a predetermined speed, and also controls the slide motor control unit 32 to drive the slide motor 18 to move the optical pickup 4. The optical disc apparatus 1 is caused to start recording or reproducing information (step S808).
(8) If the result of determination in step S805 is that the loaded optical disk is a 12 cm disk, the microcomputer 35 outputs a 12 cm disk determination signal from the disk determination means 351 (step S809). ), The process proceeds to the operation of step S808 without storing the determination signal in the memory 50.

When the optical disk is taken out from the optical disk apparatus 1 after the recording or reproducing operation is finished,
(9) First, the eject button 40 is pressed, and an eject signal from the eject signal source 41 is input to the microcomputer 35. The microcomputer 35 checks whether or not the discriminating result information of the 8 cm disc discriminated by the disc discriminating means 351 at the time of loading is stored (stored) in the memory 50 (step S810).
(10) If the determination result information of the 8 cm disc is stored (stored) in the memory 50 as a result of the check in step S810, the microcomputer 35 reads the determination result information from the memory 50, Based on the determination result information, the pickup movement instruction signal generation unit 352 generates a second movement instruction signal (step S811).

(11) The microcomputer 35 controls the slide motor control unit 32 based on the second movement instruction signal, controls the drive of the slide motor 18 via the slide motor drive circuit 19, and causes the pickup moving mechanism unit 17 to emit light. The pickup 4 is moved, and the optical sensor 9 is moved to the second position P ₂ (FIG. 5) (step S812). The second position is such that when more than half of the plane area of the 8 cm disk is discharged outside the opening 60a of the front panel 60, the position of the optical sensor 9 is the disk surface of the 8 cm disk or the signal surface within the disk surface. This is the position where the output signal of the optical sensor 9 goes off from the inside to the outside of the orthographic projection area.
(12) Thereafter, the microcomputer 35 controls the loading motor control unit 33 to drive the loading motor 15 and to drive the lifting mechanism unit 13 to rotationally displace the traverse unit 200 to chuck the optical disc (8 cm disc). To release. Thereafter, the loading motor 15 is further driven to drive the disk moving mechanism unit 14 to eject (unload) the optical disk (8 cm disk) in the -Y-axis direction (step S813).
(13) Due to the unloading movement, the point c ₂ (FIG. 5) at the end position on the straight line qq of the disk surface of the optical disk (8 cm disk) or the signal surface area in the disk surface is When the position P ₂ (position of the optical sensor 9) is reached, the detection unit 20 detects a level change of the output signal based on the reflected light of the optical sensor 9 from the on state to the off state (step S814).
(14) The microcomputer 35 controls the loading motor control unit 33 in response to the detection result in step S814, that is, the level change of the output signal of the optical sensor 9, and turns off the driving of the loading motor 15 to load the loading motor 15. The unloading movement of the optical disk (8 cm disk) by the disk moving mechanism unit 14 driven by the motor 15 is stopped (step S815). That is, the optical sensor 9 by arranging the position P ₂ of the second, to over half the plane area of 8cm disc is discharged to the outside of the optical disk apparatus 1, on condition the output signal from the photosensor 9 Thus, the loading motor 15 is kept on and the unloading drive for the disk moving mechanism 14 is continued.
(15) Grasp the peripheral edge of the center hole and the outer peripheral edge of the optical disc (8 cm disc) that has stopped moving, and manually take out the optical disc (8 cm disc) to the outside of the optical disc apparatus 1 (step S816).
(16) The microcomputer 35 controls the loading motor control unit 33 when the determination result information of the 8 cm disc is not stored (stored) in the memory 50 as a result of the check in step S810, and the loading motor control unit 33 is controlled. 15 is driven to cause the disk moving mechanism unit 14 to perform the unloading movement operation of the 12 cm disk (step S817). When the 12 cm disk comes to a position where it can be manually removed, the driving of the loading motor 15 is turned off. Then, the unloading movement of the 12 cm disk by the disk moving mechanism 14 driven by the loading motor 15 is stopped. Thereafter, the 12 cm disc is manually taken out of the optical disc apparatus 1 (step S818).

  In step S802, step S805, step S806, step S807, step S811, step S812, step S813 and step S815, the microcomputer 35 automatically executes the procedure of each operation according to the program stored in the memory 50. It shall be.

  According to the optical disk apparatus 1 of the embodiment of the present invention, an 8 cm disk is sufficient when the disk is ejected under the condition that the increase in parts cost and assembly / adjustment cost is suppressed and the increase in apparatus space is suppressed. The discharge amount can be secured, and the 8 cm disc can be taken out without touching the signal surface of the 8 cm disc. In addition, it is possible to shift to an unloading operation according to the disk size even during loading. The optical sensor 9 ensures a high output signal level by ensuring the amount of reflected light even when the distance from the disk surface or the signal surface within the disk surface is increased, and enables accurate disk discharge management. To do.

1 is a diagram showing an external appearance of an optical disc apparatus as an embodiment of the present invention. It is a figure which shows the block configuration of the optical disk apparatus as an Example of this invention. It is a figure which shows the internal structure by the side of the disc mounting of the optical disc apparatus of FIG. It is a figure which shows the internal structure on the opposite side to the disk mounting side of the optical disk apparatus of FIG. FIG. 3 is an explanatory diagram of the position of the optical sensor during disk loading and unloading in the optical disk apparatus of FIG. 2. FIG. 4 is an operation explanatory diagram when loading a disc in the optical disc apparatus of FIG. 2. FIG. 4 is an operation explanatory diagram when the disc is unloaded in the optical disc apparatus of FIG. 2. FIG. 3 is a flowchart of a disk loading operation and a disk unloading operation in the optical disk apparatus of FIG. 2.

Explanation of symbols

1 ... Optical disk device,
2 ... Optical disc,
3 ... Disc motor,
4 ... Optical pickup,
5 ... Objective lens,
6 ... Laser diode,
7 ... Laser drive circuit,
8: Light receiving part,
9: Optical sensor,
10 ... Clamper,
11: Disc motor drive circuit,
12 ... Mecha deck material,
13: Elevating mechanism,
14: Disc moving mechanism,
15 ... loading motor,
16 ... Loading motor drive circuit,
17 ... Pickup moving mechanism,
18 ... slide motor,
19 ... slide motor drive circuit,
20 ... detection part,
200 ... traverse unit,
30 ... Syscon,
31: Disc motor control unit,
32 ... Slide motor control unit,
33 ... Loading motor control unit,
35 ... Microcomputer,
351: Disc discriminating means,
352... Pickup movement instruction signal generation unit,
353 ... Unloading instruction signal generation unit,
40 ... Eject button,
41 ... Eject signal source,
50 ... Memory,
60 ... Front panel,
60a ... opening,
65 ... LED,
66 ... top cover,
67 ... Bottom case.

Claims (7)

An optical disk device that records or reproduces information by selectively loading optical disks with different outer diameters and irradiating a laser beam from an optical pickup,
An optical sensor fixed on the optical pickup, having a light emitting means and a light receiving means, irradiating light on a disk surface of the optical disk or a signal surface in the disk surface, and outputting an electric signal corresponding to the reflected light;
A loading motor for generating a driving force for loading and unloading the optical disk with respect to the optical disk device;
At the time of loading, based on the level change of the output signal of the optical sensor, it is determined whether the loaded optical disk is a small outer diameter disk or a large outer diameter disk. As a result of the determination, when the optical disk is a small outer diameter disk, At the time of unloading, prior to the unloading movement, the output signal of the optical sensor is turned off when more than half of the flat area of the small outer diameter disk is ejected from the optical disk apparatus. A control unit that generates a movement instruction signal for moving to a position;
With
When unloading the small outer diameter disk, the output signal of the optical sensor is turned on until the half or more of the center hole of the small outer diameter disk is ejected to the outside of the optical disk device. An optical disc apparatus characterized by maintaining an on state and continuing unloading driving. An optical disc apparatus that selectively loads optical discs having different outer diameters and records or reproduces information,
An optical sensor fixed on an optical pickup, having a light emitting means and a light receiving means, irradiating light on a disk surface of the optical disk or a signal surface in the disk surface, and outputting an electric signal corresponding to the reflected light;
A loading motor for generating a driving force for loading and unloading the optical disk with respect to the optical disk device;
A first control means for determining whether the loaded optical disk is a small outer diameter disk or a large outer diameter disk based on a change in level of an output signal of the optical sensor when the optical disk is loaded;
As a result of the determination, when the optical disk to be loaded is a small outer diameter disk, when unloading the small outer diameter disk, prior to unloading movement, the optical sensor is more than half the plane area of the small outer diameter disk. Is ejected to the outside from the disc insertion port of the front panel of the optical disc apparatus, the position of the optical sensor is from the inside to the outside of the orthographic projection area of the disc surface of the small outer diameter disc or the signal surface in the disc surface. Second control means for generating a movement instruction signal for moving to a position where the output signal of the photosensor is turned off,
With
When the small outer diameter disk is loaded, at the time of unloading, the optical pickup is moved to bring the optical sensor to the position indicated by the movement instruction signal of the second control means, and the small outer diameter disk is loaded. The output signal of the optical sensor is turned on to keep the loading motor on and the unloading drive is continued until more than half of the flat area of the optical disk device is discharged outside the optical disk device. An optical disk device. An optical disk device that records or reproduces information by selectively loading optical disks with different outer diameters and irradiating a laser beam from an optical pickup,
An optical sensor fixed on the optical pickup, having a light emitting means and a light receiving means, irradiating light on a disk surface of the optical disk or a signal surface in the disk surface, and outputting an electric signal corresponding to the reflected light;
A slide motor that generates a driving force for moving the optical pickup in a substantially radial direction of the optical disc;
A loading motor for generating a driving force for loading and unloading the optical disk with respect to the optical disk device;
A first control means for determining whether the loaded optical disk is a small outer diameter disk or a large outer diameter disk based on a change in level of an output signal of the optical sensor when the optical disk is loaded;
A signal for controlling the slide motor, wherein when loading the optical disc, the optical sensor is moved to a first preset position by moving the optical pickup prior to the loading movement of the optical disc. A movement instruction signal is generated, and when the loaded optical disk is a small outer diameter disk as a result of determination by the first control means, when the small outer diameter disk is unloaded, the unloading movement is performed prior to the unloading movement. Second control means for generating a second movement instruction signal for moving the optical pickup to place the optical sensor in a second position set in advance;
With
The second control means uses the optical sensor as the first movement instruction signal during loading of the large outer diameter disk or the small outer diameter disk, while the small outer diameter disk is being loaded. Generating a movement instruction signal whose position is moved from the inside to the outside of the orthographic projection area of the disk surface of the small outer diameter disk or the signal surface within the disk surface, and the small outer diameter disk At the time of unloading, as the second movement instruction signal, the position of the light sensor is set to the small movement position when the half of the flat area of the small outer diameter disk is ejected to the outside of the optical disk device. A movement instruction signal is generated to move from the inside of the orthographic projection area of the disk surface of the outer diameter disk or the signal surface in the disk surface to the second position where the output signal is turned off. Has a structure,
When unloading the small outer diameter disk, the optical sensor is moved to the second position, and the light is kept until more than half of the center hole of the small outer diameter disk is ejected to the outside of the optical disk apparatus. An optical disc apparatus characterized in that the output signal of the sensor is turned on to keep the loading motor on and the unloading drive is continued. An optical disc apparatus that selectively loads optical discs having different outer diameters and records or reproduces information,
An optical pickup for irradiating the optical disk with laser light;
A pickup moving mechanism for moving the optical pickup in a substantially radial direction of the optical disc;
A slide motor for driving the pickup moving mechanism;
An optical sensor fixed on the optical pickup, having a light emitting means and a light receiving means, irradiating light on a disk surface of the optical disk or a signal surface in the disk surface, and outputting an electric signal corresponding to the reflected light;
A disk moving mechanism for loading and unloading the optical disk with respect to the optical disk device;
A loading motor for driving the disk moving mechanism;
A loading motor control unit for controlling the driving of the loading motor;
A detector that detects a change in level of an output signal of the optical sensor when the optical disc is loaded;
Disc discriminating means for discriminating whether the optical disc to be loaded is a small outer diameter disc or a large outer diameter disc based on an output signal of the detection unit when loading the optical disc;
During loading of the optical disc, prior to the loading movement, the optical pickup is moved by controlling the drive of the slide motor to generate a first movement instruction signal for setting the optical sensor to a preset first position. In addition, when the loaded optical disk is a small outer diameter disk as a result of the determination by the disk determination means, when the small outer diameter disk is unloaded, the drive of the slide motor is controlled prior to the unloading movement. A pickup movement instruction signal generator for generating a second movement instruction signal for moving the optical pickup to place the optical sensor in a second position set in advance;
With
The loading motor control unit is configured to form a control signal for turning off the driving of the loading motor in response to turning off of the output signal of the optical sensor when unloading the small outer diameter disk.
The pick-up movement instruction signal generation unit uses the optical sensor as the first movement instruction signal when loading the large outer diameter disk or the small outer diameter disk, and the optical sensor during the loading movement of the small outer diameter disk. Is moved to a first position where the position changes from the inside to the outside of the orthographic projection area of the disk surface of the small outer diameter disk or the signal surface within the disk surface, and the small outer diameter is generated. When the disk is unloaded, the position of the optical sensor is set as the second movement instruction signal when the half of the plane area of the small outer diameter disk is ejected to the outside of the optical disk apparatus. Moving to the second position where the output signal goes off from the inside of the normal projection area of the disk surface of the small-diameter disk or the signal surface in the disk surface. It has a configuration for generating a No. 示信,
When the small outer diameter disk is loaded, when unloading, the optical sensor is moved to the second position, and more than half of the center hole of the small outer diameter disk is outside the optical disk device. An optical disc characterized in that the output signal of the optical sensor is turned on until the loading motor is kept on until the disc moving mechanism is unloaded by the loading motor until it is ejected. apparatus.   The detection unit detects one or both of a change in level of the output signal of the optical sensor from the on state to the off state of the output signal and the time from the on state to the off state. The optical disc apparatus according to claim 4, having a configuration to:   6. The optical disc device according to claim 1, wherein the optical discs having different outer diameters are an 8 cm disc and a 12 cm disc.   7. The optical disk device according to claim 1, wherein the optical disk device is a slot-in type optical disk device.

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