JP2007257732A - Disk drive - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a disk drive for smoothly ejecting/retreating a disk properly. <P>SOLUTION: The disk drive 1 is provided with: a changer for housing a plurality of recording media; a deck 1 for mounting a recording medium; a spindle motor 13 for rotating the recording medium; an optical pickup 9 for reading/recording in a disk; a microcomputer 4 for driving and controlling the entire disk drive in addition to the spindle motor 13 and the optical pickup 9; a contact sensor 21 for detecting whether the recording medium is in contact with the improper place of the deck 1; and an angle sensor 22 for detecting the rotational angle of the disk. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a disk drive technology for reading a disk-shaped recording medium.

  Conventionally, a disk-shaped disk such as a CD (Compact Disk) or a DVD (Digital Versatile Disk) has been used as a recording medium. Further, in recent years, an autochanger type disk drive in which a plurality of these disks are stored in a storage unit called a stocker, and a disk is loaded and read (reproduced) from the storage unit has become widespread.

  A disk drive includes a loading mechanism for loading or unloading a disk, a turntable and a spindle motor for rotating the disk, an optical pickup that is disposed below the recording surface of the disk and condenses a laser beam, and an optical pickup A seek mechanism that performs a seek operation, and a magnetic head that is disposed to face the recording surface of the optical disk and applies a magnetic field.

  Each of the spindle motor, optical pickup, seek mechanism, and magnetic head generates heat when driven. In particular, the number of parts arranged below the disk is large, and the optical pickup has a laser diode as a light source inside, so that heat generation is more remarkable than other parts.

  For this reason, the temperature of the lower surface (reading surface side) of the disk becomes higher than the temperature of the upper surface, and a difference in thermal expansion occurs between the upper and lower surfaces of the disk, and the disk may be deformed. Due to thermal deformation of the disk, track deviation, focus deviation, increase in wavefront aberration, etc. are likely to occur.

In order to prevent such a situation, technologies relating to a disk drive (Patent Document 1) for cooling a heated disk and an information storage medium protection device (Patent Document 2) have been disclosed.
Japanese Patent Laid-Open No. 5-189866 JP-A-5-189950

  However, the disk drive described in Patent Document 1 and the information storage medium protection device described in Patent Document 2 are provided with a cooling mechanism for preventing thermal deformation of the disk as described above. It was meaningless to play a disc that had already been deformed.

  If a disk is thermally deformed in a disk drive with an autochanger, the disk will be caught in the loading mechanism when it is ejected or retracted to the stocker. There is a case. Of course, even if the disk is not deformed, the disk may not be properly ejected / evacuated even when the disk is not properly loaded and positioned at a predetermined location.

  Even if it is not a changer type deck, the disc may not be ejected normally.

In such a case, conventionally, for example, the disk was once returned to the original position and attempted to be ejected or retracted again. However, the disk was eventually caught at the same position, and it was difficult to smoothly eject and retract. As a result, in the worst case, the disc may be left inside the deck.

  Accordingly, an object of the present invention is to provide a disk drive that can smoothly and appropriately eject and retract a disk.

  The present invention has been made in view of the above matters, that is, the present invention includes a rotating unit that rotates a disk on which information is recorded, a reading unit that reads information recorded on the disk rotated by the rotating unit, and Detecting means for detecting whether or not the disk is in a predetermined position, and in response to detecting that the disk is not in the predetermined position by the detecting means, the rotating means for moving the disk to the predetermined position And a control means for controlling the rotation of the motor.

  The predetermined position according to the present invention includes a position where the disk is normally set on the rotating means, or a position where information recorded on the disk can be read by the reading means. The rotating means preferably includes a turntable and a spindle motor that rotates the turntable.

  Further, the detecting means may be any location as long as it can detect whether or not the disc is at a predetermined position. In addition, sensors, such as a contact sensor and a proximity sensor, can be used suitably for a detection means.

  The disk drive according to the present invention can change the position of the disk by rotating the turntable to move the disk when the detecting means detects that the disk is not in a predetermined position. As a result, it is possible to move the disk that has been caught inside the disk drive so that the disk is easily released, or to move a disk that is not in a predetermined position to a predetermined position, and to smoothly eject the disk. it can.

  Further, the control means according to the present invention calculates the rotation angle from the rotation drive time of the rotation means for moving the disk to a predetermined position, and when the calculated rotation angle satisfies the predetermined angle, the disk by the rotation means It is preferable to execute the step of stopping the rotation.

  The control means calculates the rotation angle using, for example, a rotation speed and a rotation time of the rotation means using a predetermined arithmetic expression. For example, when the rotation angle reaches 60 degrees, the rotation unit is not further driven to rotate, and the rotation of the disk by the rotation unit is stopped.

  In this way, by arbitrarily setting the maximum rotation angle of the disk by the rotating means, it is possible to arbitrarily set the magnitude of the movement given to the disk that is not at a predetermined position. In other words, when the disk is in an environment where it is difficult to set the disk in a predetermined position (for example, an environment with a lot of vibration such as a car audio system or a car navigation system), the maximum rotation angle is increased to increase the movement given to the disk. The disk can be easily positioned at a predetermined position. Of course, on the contrary, if the disk drive is placed in an environment with little vibration or the like, the maximum rotation angle can be reduced to reduce the movement applied to the disk, thereby reducing the burden on the disk.

  The control means according to the present invention calculates the rotation angle of the rotating means from the pulse signal read by the reading means as the disk is rotated by the rotating means for moving the disk to a predetermined position, and the calculated angle is predetermined. If the angle is satisfied, a step of stopping the rotation of the disk by the rotating means may be executed.

  Further, the control means according to the present invention moves the disk to the predetermined position by the rotation means when the detection means detects that the disk is not at the predetermined position after the rotation of the disk by the rotation means. The step of further rotating the disk in a direction opposite to the rotation direction of the rotation for the rotation may be executed.

  That is, for example, when the disk is not in a predetermined position, the rotating means first rotates clockwise to move the disk. Then, it is detected again by the detecting means whether or not the disc is at a predetermined position. As a result, when it is detected again that the disk is not in a predetermined position, the rotating means rotates counterclockwise and moves the position of the disk again.

  In this way, by sequentially changing the rotation direction of the rotating means, it is possible to increase the possibility that a disc that has not returned to the predetermined position by the first rotation can be returned to the predetermined position by the second rotation.

  The present invention further includes a timer for measuring an elapsed time from when the detection means detects that the disk is not in a predetermined position, and the control means is arranged to rotate the disk after the rotation means. Further, in response to detecting that the disk is not in a predetermined position by the detecting means, a step is performed in which a predetermined time is measured by a timer and whether or not the disk is in the predetermined position is detected again by the detecting means. You can also.

  Thus, not only rotating the rotation means continuously but also stopping the rotation drive of the rotation means for a certain period of time can calm the movement of the disk and fix the position of the disk.

  Furthermore, the present invention is provided on the outside of the main body of the disk drive, and is provided in the vicinity of the insertion slot, the insertion slot for inserting the disk into the main body, and the disk to the inside or outside of the main body. And a guiding means for guiding are preferable. Then, after the rotation of the disk by the rotation means, the control means further executes a step of moving the disk to the outside of the main body by the guiding means in response to detecting that the disk is not in a predetermined position by the detection means. good. That is, when the detection unit detects that the disk is not in a predetermined position, the roller is driven to eject the disk to the outside of the disk drive.

  For example, when the disk is deformed, it is often difficult to place the disk at a predetermined position even if the disk is rotated by driving the rotating means. In such a case, according to the disk drive of the present invention, a disk that is not arranged at a predetermined position even if it is once moved to a predetermined position is ejected. As a result, a disc that is not in a predetermined position is not forcibly reproduced, and a failure of the disc drive can be prevented.

  Furthermore, the disk drive of the present invention may further include a temperature detection means for detecting the temperature of the disk or its surroundings. The temperature detection means detects the temperature of the disk surface or around the disk. This is because there are many parts in the disk drive that generate heat when driven, and the disk may be heated and deformed by these heats. The deformed disk could not be smoothly inserted and removed, causing the disk to be caught or jammed in the disk drive.

In the present invention, a temperature detecting means for measuring the temperature in the disk drive may be provided. The deformation rate of the disk corresponding to the temperature is estimated in advance, and the temperature and the rotation angle of the disk are associated with each other. For example, the rotation angle when the temperature is 60 ° C. is −90 degrees, or the rotation angle when the temperature is 120 ° C. is 90 degrees.

  Thus, by providing the temperature detection means, the degree of deformation of the disk and the rotation angle of the disk can be associated with each other, so even if the disk is deformed by heat, the degree of deformation is adjusted. By rotating the disc, the frequency of catching and clogging can be minimized.

  The present invention further comprises a disk storage shelf for storing a plurality of disks, a clamp means supported by the disk drive body, for clamping the disk, and moving the disk to the rotating means or the storage shelf. After the rotation of the disk by the rotation means, the detection means detects that the disk is not in a predetermined position, and the clamp means stores the disk from the rotation means in the disk storage shelf. The step of moving another disk to a predetermined position can also be executed. This is a processing content that can be performed by a disk drive equipped with a so-called changer. That is, a disk that is not in a predetermined position is returned to the storage shelf without being read, and another disk is taken out and set on the rotating means.

  As a result, a disc that is not in a predetermined position is not forcibly reproduced or ejected, and the disc can be prevented from being jammed or caught inside the disc drive.

  According to the present invention, it is possible to provide a disk drive that can smoothly and appropriately eject and retract a disk.

  Hereinafter, the disk drive of the present invention will be described in detail with reference to the drawings.

  The disk drive (hereinafter referred to as a deck) according to the present embodiment will be described as adopting a sliding pickup mechanism in which an elevator mechanism that moves up and down according to the position of the disk and a pickup mechanism that reads disk information are integrated. Of course, the present invention is not limited to the sliding pickup mechanism, but is a slot-in type disc drive in which it is not necessary to take out a magazine or tray on which a disc is placed, and a plurality of discs are directly inserted into a front panel insertion slot one by one ) And a separate action stocker (a disc drive of a type in which a stocker that stores a plurality of discs is divided into upper and lower parts and a pickup unit moves in a gap between them) is used suitably. it can.

  Further, in this embodiment, the description will be made as an in-vehicle disk drive such as a car audio or a car navigation device, but the present invention is not limited to this, and of course, it can be suitably used for a home audio, a DVD player, or the like. it can.

(Constitution)
As shown in FIG. 1, the deck 1 of this embodiment is a stocker (storage shelf) for storing a plurality of disk-shaped recording media (hereinafter referred to as disks) such as DVD (Digital Versatile Disk) and CD (Compact Disk). ) 2, a swing arm 3 for taking out the disk from the stocker 2, playing back the disk, and returning the disk after playback to the stocker 2, a drive device 4 for the swing arm 3, A linear position sensor (not shown) for detecting the position of the disk and an elevator mechanism 5 for raising and lowering the stocker 2 based on the output of the linear position sensor are provided.

  The swing arm 3 is rotated by a driving device 4 and includes a frame 6 and a clamp arm 7. A turntable 8 is provided at the front end of the frame 6 for rotating a disk. An optical pickup 9 and a moving path 10 along which the optical pickup 9 moves are formed at the center of the frame 6.

  The optical pickup 9 includes a laser diode (not shown), a polarizing beam splitter, an objective lens, a photodetector, and the like, and performs a recording operation according to a laser driving signal based on recording information data supplied from a laser driving circuit. The recording information is recorded by irradiating the information recording surface of the disc with an emission power that varies with the emission power, and at the time of reading operation, the disc is irradiated with the light beam with a constant emission power (reading power) The reflected light is received by a detector and read.

  A clamp arm 7 is located above the frame 6. The base of the clamp arm 7 is attached by a rotating shaft on the frame 6, and a clamper 11 that clamps the disk is rotatably provided at the tip of the clamp arm 7. Then, the tip end portion of the clamp arm 7 rotates toward the frame 6, and the disk placed on the turntable 8 is sandwiched and fixed by the clamper 11.

  Further, a convex portion (not shown) protruding toward the clamp arm 7 side (that is, upward) is formed on the upper surface of the turntable 8 provided at the tip of the frame 6. The convex portion is fixed on the turntable 8 in a state where the disc can rotate by fitting with a hole formed in the center of the disc.

  Further, as shown in FIG. 2, an auxiliary arm 3 a is housed together with the swing arm 3 below the driving device 4. The auxiliary arm 3a has a pivot shaft at the base, and the tip pivots in the direction toward the swing arm 3 (in the direction of arrow S in FIG. 2) about the pivot shaft. Although not shown, a locking support portion that engages with a holding portion provided at the tip of the frame 6 of the swing arm 3 is provided at the tip of the auxiliary arm 3a.

  Further, when the swing arm 3 starts to move in a direction in which the swing arm 3 is accommodated below the drive device 4, the auxiliary arm 3a starts to rotate in a direction (in the direction of arrow T in FIG. 2) to return to the original position in synchronization. Note that the rotation of the auxiliary arm 3a at this time is faster than the rotation of the swing arm 3, and the locking support portion at the tip of the auxiliary arm 3a first enters and holds in the movement locus of the holding portion at the tip of the swing arm 3. Wait for the tool to move.

  As a result, when the swing arm 3 comes to the playback position of the disk D, the locking support portion at the tip of the auxiliary arm 3a engages with the holding tool at the tip of the swing arm 3 to support the swing arm 3. Even if there is a deviation in height between the swing arm 3 and the auxiliary arm 3a, the holding support 3b is correctly guided to the central part of the holding part, and the positioning in the height direction is correctly performed. 3 is supported by the auxiliary arm 3a.

  Furthermore, the vertical position of the swing arm 3 in the apparatus is constant. Therefore, the stocker 2 is divided in the vertical direction of the deck 1 so that the swing arm 3 clamps a desired disk stored in the stocker 2. As shown in FIG. 5A, the stocker 2 includes a single stocker base 2a and movable stockers 28a to 28f which are a plurality of movable shelf boards placed thereon. Each of the movable stockers 28a to 28f can store one disk. The stocker 2 moves up and down in the deck 1 by the elevator mechanism 5.

Further, in order to take out a desired single disk held by the stocker 2 by the swing arm 3, the movable stockers 28a to 28f constituting the stocker 2 are divided in the vertical direction at a desired position by the dividing mechanism 12 of the stocker 2. It can be done.
(Hardware configuration)
Next, the hardware configuration of the deck 1 will be described in detail with reference to FIG. The deck 1 includes a spindle motor 13 that rotates the turntable 8 and a microcomputer (control means) 14 that controls driving of the entire deck 1 in addition to the spindle motor 13 and the driving device 4. The spindle motor 13 is provided below the turntable 8.

Further, the deck 1 corrects the sound of the digital data, and the A / D converter 15 that receives the reflected light from the information recording surface irradiated with the light beam by the optical pickup 9 with a photodetector and converts it into digital data. A DSP / bus treble circuit 16, a D / A converter 17 that converts corrected digital data into analog data, a volume circuit 18 for adjusting the volume, and a speaker 19 that outputs sound are connected to the speaker 19. A speaker driving circuit (power IC) 20 that controls driving is included.

  Further, the deck 1 has various detection sensors that detect the state of the disk on the turntable 8. First, when the disk placed on the turntable 8 is stored (retracted) in the stocker 2, or when the disk is ejected to the outside of the deck 1, the disk is not at a predetermined position but at an illegal position. It has a contact sensor 21 that detects whether or not it is in contact, and an angle sensor (for example, a rotary encoder) 22 that detects the rotation angle of the disk. Detection signals from these sensors are transmitted to the microcomputer 14. Note that these sensors may be at any position as long as each detection target can be detected. For example, the sensors can be disposed on the substrate disposed in the deck 1 or the deck 1 itself.

The microcomputer 14 of this embodiment has a memory 23, in which an OS (Operating System) 24 that is a basic program of the microcomputer 14, an application program 25 for various controls, and an application program 25 are executed. And a table 26 storing various data to be used.

  Furthermore, the deck 1 of the present embodiment has a timer 27. This timer 27 is for measuring the rotation time of the disk (turntable 8), the standby time of each drive, and the elapsed time.

The above is the configuration of the deck 1 of the present embodiment.
(Basic disc operation)
Next, a disk control method by the deck 1 of this embodiment will be described.

  First, the basic operation from the insertion of the disk to the ejection by the deck 1 of this embodiment will be described. 4 and 5 show an operation in which the swing arm 3 takes out one disk D from the stocker 2, a reproduction (reading) operation, and an operation for storing the disk D in the stocker 2 after reproduction.

  With reference to FIG. 4, the positions of the disk D, the swing arm 3, and the stocker 2 in the deck 1 will be described. FIG. 4A shows a standby state in which the deck 1 is not operating, or a state in which the power is turned off. In this state, the stocker 2 stores a plurality of disks.

At this time, the swing arm 3 is housed in the drive device 4 and is not shown in this drawing. The disk D in the stocker 2 can freely move up and down in the deck 1 by the elevator mechanism 5 of the stocker 2.

  For example, when the third disk D from the top among the disks stored in the stocker 2 is reproduced, the stocker 2 is lowered by the elevator mechanism 5, and the position of the third highest disk D3 is the swing arm 3. It becomes the position taken out by. In this state, as shown in FIG. 5B, the stocker 2 is divided into upper and lower parts, and the other stockers are further lowered leaving only the stocker storing the disc D3 to be reproduced.

  When the lowering and dividing of the stocker are completed, as shown in FIG. 4B, the swing arm 3 is driven to rotate by the drive device 4 of the swing arm 3 (direction A in FIG. 4B), and the disk D Head towards the center hole.

  As shown in FIG. 4C, the swing arm 3 moves to a position directly above the center hole of the disk D. In this state, the swing arm 3 is fixed on a convex portion provided on the turntable 8. Then, only the stocker 2 for storing the disc to be reproduced is lowered, and the disc D held is placed on the turntable 8 of the swing arm 3. Subsequently, the clamp arm 7 of the swing arm 3 rotates to the turntable 8 side, and the reproduced disk D is clamped by the clamper 11 and fixed on the turntable 8.

  When the disc D to be reproduced is fixed on the turntable 8 by the clamper 11, as shown in FIG. 4D, the swing arm 3 rotates to the disc reproduction position, and the disc D is reproduced at this position. Is called. At this time, the tip of the swing arm 3 is fixed by the auxiliary arm 3a.

  When the reproduction of the disk D is completed, as shown in FIG. 4E, the swing arm 3 is rotated again in the direction of the center hole of the disk held by the stocker 2, and the disk whose reproduction has been completed is stored in the stocker. Store in 2. Incidentally, the state shown in FIG. 4E is a state in which a part of the disc that has been reproduced has been inserted into the stocker 2, and is not a state in which the disc has been completely returned to the stocker 2.

Further, when the reproduced disk D is completely stored in the stocker 2 and the swing arm 3 is rotated back to the drive unit 4 side, the state shown in FIG. In this state, the stocker 2 moves in the vertical direction so that the disk to be reproduced next can be taken out by the swing arm 3 (height), and the above-described reproducing operation for other disks is repeated.
(Split operation in the stocker)
Next, the operation for taking out the disc from the stocker 2, the reproducing operation, and the storing operation in the stocker 2 will be described in detail. Here, a state in which the third disk D3 from the top among the disks stored in the stocker is reproduced so that the operation of dividing the disk by the stocker 2 becomes clear will be described.

  Further, in the following description, as shown in FIG. 5A, the stocker 2 has six movable stockers 28a to 28f mounted on the stocker base 2a, and the movable stockers 28a to 28f. In the following description, each is movable independently, and each of the movable stockers 28a to 28f can store one disk.

  FIG. 5A shows a state before the disc is reproduced. Here, only the turntable 8 and the clamper 11 in the swing arm 3 are shown as representatives, and other components of the swing arm 3 are not shown.

  In the state of FIG. 5A, the turntable 8 and the clamper 11 are in a position retracted from the moving range of the disks D (D1 to D6), and the disks D1 to D6 can be moved in the vertical direction of the deck 1 by the stocker 2. It has become. That is, the state shown in FIG. 5A is a state before a disc to be played back is selected.

  FIG. 5B shows a state in which the disc D3 to be reproduced is selected and the stocker 2 is divided. This state shows a state where the disk D3 in the third-stage movable stocker 28c from the top is selected and the stocker 2 is divided into three. In this state, a space is created in which the turntable 8 can be inserted below the selected disk D3 and the clamper 11 can be inserted above.

  FIG. 5C shows a state in which the swing arm 3 composed of the turntable 8 and the clamper 11 is inserted above and below the disk D3 after the state of FIG. 5B is reached. The insertion of the turntable 8 and the clamper 11 ends at the position of the center hole of the disk D3, and thereafter, as shown in FIG. 5 (d), the third-stage movable stocker 28c descends, and this movable stocker The disk D3 held on 28c is placed on the turntable 8. At this time, the center hole and the convex portion of the disk D3 are fitted and fixed.

  When the disk D3 is placed on the turntable 8, the disk D3 is clamped by the clamper 11 as shown in FIG. 5 (e), and then the disk D3 as shown in FIG. 5 (f). Is pulled out of the stocker 27c by the movement of the turntable 8 (frame 6). Since the movable stocker 28c has a crescent shape as shown in FIG. 1, when the turntable 8 moves to the playback position side to some extent, it does not engage with the disk D3. The stocker 27c emptied in this state rises as shown in FIG.

  Thereafter, the turntable 8 (frame 6) continues to rotate (move) further in the direction of pulling out the disk D3, stops at the reproduction position shown in FIG. 5 (h), and is reproduced (read) at that position. At this time, the turntable 8 is fixed by the auxiliary arm 3a as shown in FIG. 4 (d). When the reproduction is completed, as shown in FIG. 5 (i), the turntable 8 (frame 6) moves to the stocker 2 side, and the disk D3 is stored in the original movable stocker 28c.

  When the disk D3 is stored in the movable stocker 28c, the clamper 11 is raised and the disk D3 becomes free on the turntable 8. Therefore, as shown in FIG. Is moved back to a position where there is no interference with the disc D held in the disk, and the reproducing operation is finished. When the movable stocker 28c moves up to the position shown in FIG. 5C and the reproduction of the disc is continued, the division position of the stocker 2 shown in FIG. 5B changes, and FIG. To the operation shown in FIG. 5J is repeated.

  The above is the basic operation from the insertion to the ejection of the disk by the deck 1 of the present embodiment.

(Disk control method)
Next, based on the basic operation described above, a disk control method and operation by the deck 1 of the present embodiment will be described.

In this embodiment, the control of rotating the turntable 8 to change the position of the disk when the disk storage (evacuation) operation cannot be performed normally will be described with reference to the control flow shown in FIG. In the description of the present embodiment, it is assumed that the state where the reproduction of the disc is completed (see FIG. 4D for the state of the disc D and the clamp arm 7) is started, and the disc is stored (retracted) in the stocker. To do. Note that the control of this embodiment can be applied not only when the disc is stored in the stocker but also when the disc is ejected outside the deck.

  First, the microcomputer 14 (see FIG. 3) determines whether or not the disk D is in a predetermined position before executing a retreat operation for storing the disk D that has been reproduced in the stocker 2 (S01). In the present embodiment, the “predetermined position” is described as a reproduction position on the turntable 8, but is not limited to this position as long as the disk can be normally retracted.

  Here, the microcomputer 14 uses the contact sensor 21 to detect whether the disk D is in contact with an illegal place in the deck 1 or whether the disk D is in contact with a place other than the turntable 8. Make a decision.

  If it is determined in step 01 that there is no abnormality in the position of the disk D, that is, the disk D is in a normal reproduction position, a process of storing (retracting) the disk D in the stocker 2 is started (S02). The operation of storing the disk D in the stocker 2 performs the above-described basic operation of the disk in the order of FIGS. 4C, 4B, and 4A.

  On the other hand, when the microcomputer 14 determines that the position of the disk D is abnormal in step 01, that is, the disk D is not in the normal reproduction position, the microcomputer 14 moves the disk D to the normal reproduction position. Processing for rotationally driving the turntable 8 is executed (S03).

  When the turntable 8 is rotationally driven, the angle sensor 22 detects the rotational angle of the disk D by the rotational drive of the turntable 8. Then, the microcomputer 14 determines whether or not the disk D has rotated to a predetermined angle (for example, 60 degrees) set in advance based on the detection result by the angle sensor 22 (S04).

  If the microcomputer 14 determines in step 04 that it has not rotated to a predetermined angle, the drive of the turntable 8 is continued until the predetermined angle is satisfied (return to step 03).

  On the other hand, if it is determined in step 04 that the microcomputer 14 has rotated to a predetermined angle, it is determined whether or not the drive of the turntable 8 has been retried a set number of times (S05). It is assumed that the microcomputer 14 performs a process of counting the number of rotation processes that have been retried and always storing them in the storage area in the memory 23. The number of retries can be set in advance. For example, when the number of retries is set to three, the microcomputer 14 retries the rotation driving process of the turntable 8 three times.

  If it is determined in step 05 that the microcomputer 14 has not retried the set number of times, the process returns to step 03 and the same processing is repeated.

  On the other hand, if it is determined in step 05 that the microcomputer 14 has retried, a standby state is maintained so that nothing is operated for a predetermined time (S06). This waiting time is measured by the timer 27. For example, if the standby time is 5 seconds, the microcomputer 14 waits without executing other processes until 5 seconds have elapsed after three retries. During this waiting time, the operation of the moving disk D is stopped, and the position of the disk D can be fixed.

  When the predetermined time has elapsed, the microcomputer 14 executes the second disk D position detection process (S07). Here, when the microcomputer 14 determines that the disk D is in a normal reproduction position, the microcomputer 14 proceeds to step 02 and starts the evacuation operation.

  On the other hand, when the microcomputer 14 determines that the disk D is not in the normal reproduction position, the turntable 8 is rotationally driven in a direction opposite to the rotational drive direction of the first turntable 8 (rotation by step 03). The disk D is moved (S08). At this time, the angle sensor 22 detects the rotation angle of the disk D by the rotational drive of the turntable 8.

  Then, it is determined whether or not the disk D has been rotated to a predetermined angle by the rotational drive. Then, the microcomputer 14 determines whether or not the disk D has rotated to a predetermined angle (for example, −60 degrees) set in advance based on the detection result by the angle sensor 22 as in step 04 (S09).

  If the microcomputer 14 determines in step 09 that the disk D has not rotated to a predetermined angle, the process returns to step 08 and the drive of the turntable 8 is continued until the predetermined angle is satisfied.

  On the other hand, when the microcomputer 14 determines in step 09 that the disk has rotated to a predetermined angle, the rotation drive of the turntable 8 is stopped, the movement of the disk D is stopped, and the processes of steps 06 and 07 are executed again. To do.

  In the second step 07, when the microcomputer 14 determines that the disk D is in the normal reproduction position, the process proceeds to step 02 to start the evacuation operation, and the disk D is normally stored in the stocker 2. Note that the processing from step 06 to step 09 is repeated until the disk D moves to the normal reproduction position.

  As described above, in the disk control method of the deck according to the present embodiment, when the disk is not arranged at the normal reproduction position, the turntable is rotationally driven so as to return to the normal reproduction position, and the disk is moved. As a result, the disk is not forcibly stored in the stocker, and troubles that occur in the deck such as the disk being caught inside the deck can be prevented.

  In addition, in step 08, the turntable is driven in the direction opposite to the direction of the previous rotation drive (rotation drive in step 03), so that the position of the disk and the catch due to the warp of the disk are the same position. Can be eliminated. As a result, it is possible to increase the storage (discharge) rate of the disk and to prevent a failure of the disk drive itself.

(Other embodiment 1)
In addition, as shown in FIG. 1, the deck 1 of the present embodiment is provided outside the deck 1 main body, and is provided in the vicinity of the insertion port 29 and an insertion port 29 for inserting a disk into the deck 1 main body. It further has a roller (guide means) 30 for guiding the disk to the inside of the main body of the deck 1.

  When the microcomputer 14 detects that the disk is not in a normal reproduction position, the microcomputer 14 can drive the roller 30 and move the disk in the direction of ejecting from the insertion port 29.

  That is, when there is a disc at a position where the reproduction operation cannot be normally performed, the deck 1 according to this aspect prompts the user to eject the disc and insert a different disc. The roller 30 can also be used as one that should assist the disk loading operation.

  The deck of this embodiment will be described with reference to the control flow shown in FIG. 7 for the control of rotating the disk for a predetermined time and changing the position of the disk when the disk evacuation operation cannot be performed normally. Since the deck of the present embodiment is the same as the deck 1 of the first embodiment, the description of the configuration of the deck is simplified by attaching the same reference numerals as those in the drawing of the first embodiment.

  Also, in this embodiment, the description will be made on the assumption that the state where the reproduction of the disc is completed (see FIG. 4D for the state of the disc D and the clamp arm 7) is started and the disc is stored (retracted) in the stocker. In the control of this embodiment, the same processes as those of the control of the first embodiment shown in FIG. 6 are denoted by the same reference numerals, and the detailed description thereof is simplified.

  In the present embodiment, after the process of step 03, the timer 27 (see FIG. 3) starts counting the rotational drive time.

  Next, based on the count result of the timer 27, the microcomputer 14 determines whether or not the rotation drive of the turntable 8 has been performed for a certain time (for example, 1 second) (S23). If the microcomputer 14 determines that the predetermined time has not been exceeded, the microcomputer 14 continues the process of rotating the disk D until the set time has elapsed (return to step 03).

  If it is determined in step 23 that the microcomputer 14 has exceeded a predetermined time, the process in step 05 is performed. If the microcomputer 14 determines that the set number of times has not been retried, the process returns to step 03 and the same process is repeated.

  On the other hand, if it is determined in step 05 that the microcomputer 14 has retried for the set number of times, the microcomputer 14 performs the processes in steps 06 to 08.

  In this embodiment, simultaneously with the processing of step 08, the timer 27 starts to count the rotational drive time of the turntable 8. Then, the microcomputer 14 again determines whether or not the rotational drive time has exceeded a certain time (S28). If the microcomputer 14 determines that the predetermined time has not been exceeded, the process returns to step 27 and the microcomputer 14 continues to drive the turntable 8 until the predetermined time is satisfied.

  On the other hand, when the microcomputer 14 determines in step 28 that the microcomputer 14 has rotated to a predetermined angle, the rotational drive of the turntable 8 is stopped, the movement of the disk D is stopped, and the processes of steps 06 and 07 are executed again.

  In the second step 07, when the microcomputer 14 determines that the disk D is in the normal reproduction position, the process proceeds to step 02 to start the evacuation operation, and the disk D is normally stored in the stocker 2. Note that the processing from step 06 to step 28 is repeated until the disk D moves to a normal reproduction position.

  As described above, the disk control method of the deck according to the present embodiment moves the disk by rotating the turntable for a certain time so that the disk returns to the normal playback position when the disk is not positioned at the normal playback position. Let As a result, the disk is not forcibly stored in the stocker, and troubles that occur in the deck such as the disk being caught inside the deck can be prevented.

Further, by rotating the rotation drive direction of the turntable in the direction opposite to the previous rotation drive direction (rotation drive of step 22) in step 27, the disk position or the catch due to the warp of the disk is the same position. It is possible to eliminate the occurrence.
As a result, it is possible to increase the storage (discharge) rate of the disk and to prevent a failure of the disk drive itself.

The deck according to the present embodiment is characterized in that a rotation angle of a disk (turntable) is estimated using an FG (Frequency Generator) signal, and the position of the disk is controlled based on the rotation angle. The FG signal is a pulse signal proportional to the rotation speed of the spindle motor 13, and the rotation angle of the disk is estimated by monitoring the FG signal. The FG signal changes when the spindle motor 13 rotates. Therefore, the rotation angle can be estimated by monitoring the number of pulses of the FG signal.

  With reference to the control flow shown in FIG. 8, the disk control in this embodiment will be described. Since the deck of the present embodiment is the same as the deck 1 of the first embodiment, the description of the configuration of the deck is simplified by attaching the same reference numerals as those in the drawing of the first embodiment. In addition, also in this embodiment, the description will be made assuming that the state where the reproduction of the disc is finished (see FIG. 4D for the state of the disc D and the clamp arm 7) is started and the disc is stored (retracted) in the stocker. . In the control of this embodiment, the same processes as those of the control of the first embodiment shown in FIG. 6 are denoted by the same reference numerals, and the detailed description thereof is simplified.

  In this embodiment, when the process of step 03 is performed, the microcomputer 14 determines whether or not the FG signal has changed (S33). The change of the FG signal is estimated in advance, for example, 120 degrees for 10 pulses. If the microcomputer 14 determines that the FG signal has not changed, the rotation drive of the turntable 8 is continued until the F signal changes (return to step 03).

  On the other hand, if the microcomputer 14 determines in step 33 that the FG signal has changed and the estimated rotation angle of the disk D has reached the set reference rotation angle, the processing in steps 05 to 08 is performed.

  Then, after the process of step 08, the microcomputer 14 again determines whether or not the FG signal has changed (S38). If the microcomputer 14 determines that the FG signal has not changed, the process returns to step 08, and the microcomputer 14 continues to drive the turntable 8 until the FG signal changes.

  On the other hand, if the microcomputer 14 determines in step 38 that the microcomputer 14 has rotated to a predetermined angle, the rotation drive of the turntable 8 is stopped, the movement of the disk D is stopped, and the processing of step 06 and step 07 is executed again.

  In the second step 07, when the microcomputer 14 determines that the disk D is in the normal reproduction position, the process proceeds to step 02 to start the evacuation operation, and the disk D is normally stored in the stocker 2. Note that the processing from step 06 to step 38 is repeated until the disk D moves to a normal reproduction position.

  As described above, according to the deck 1 of this embodiment, it is possible to calculate the rotation angle of the disk from the operating states of the spindle motor 13 and the optical pickup 9 and to control the movement operation of the disk.

  In this way, when the disc is not placed at the normal playback position, the disc can be moved by rotating the turntable for a predetermined time so as to return to the normal playback position.

  As a result, the disk is not forcibly stored in the stocker, and troubles that occur in the deck such as the disk being caught inside the deck can be prevented.

  Further, by rotating the rotation drive direction of the turntable in the direction opposite to the previous rotation drive direction (rotation drive of step 32) in step 37, the catch due to the position of the disk or the warp of the disk is the same position. It is possible to eliminate the occurrence. As a result, it is possible to increase the storage (discharge) rate of the disk and to prevent a failure of the disk drive itself.

  The deck of the present embodiment has a selection range for the rotation angle of the disk (turntable), sets a rotation angle randomly from these rotation angles, and receives that the disk has rotated to satisfy the set angle. It is characterized by controlling the disk position. In the deck of this embodiment, a rotation angle is set in advance in a storage area in the memory 23. For example, it is stored in the memory 23 so that the rotation angle can be selected such as 60 degrees, 90 degrees, 120 degrees, and 180 degrees.

  With reference to the control flow shown in FIG. 9, the disk control in this embodiment will be described. Since the deck of the present embodiment is the same as the deck 1 of the first embodiment, the description of the configuration of the deck is simplified by attaching the same reference numerals as those in the drawing of the first embodiment. In addition, also in this embodiment, the description will be made assuming that the state where the reproduction of the disc is finished (see FIG. 4D for the state of the disc D and the clamp arm 7) is started and the disc is stored (retracted) in the stocker. . In the control of this embodiment, the same processes as those of the control of the first embodiment shown in FIG. 6 are denoted by the same reference numerals, and the detailed description thereof is simplified.

  In this embodiment, after the process of step 03, the microcomputer 14 determines whether or not the turntable 8 has been driven to rotate at all the rotation angles recorded in the memory 23 (S43). Here, when the microcomputer 14 determines that the rotation angle to be selected still remains, the rotation drive process of the turntable 8 is performed at the remaining rotation angle.

  On the other hand, if the microcomputer 14 determines in step 43 that the selected rotation angle does not remain, the microcomputer 14 stops the rotational drive of the turntable 8 and performs the processes of steps 05 to 08.

  Then, after the process of step 08, the microcomputer 14 again determines whether or not the disk D is moved by rotationally driving the turntable 8 at all the set rotation angles (S48). In this case, since the angles are opposite to those of step 03, when rotation angles of 30 degrees, 60 degrees, and 90 degrees are set in step 03, in step 08, -30 degrees, -60 degrees, and -90 degrees are set. It is assumed that the rotation angle is set.

  If the microcomputer 14 determines that the selected rotation angle still remains in step 48, the process returns to step 08, and the microcomputer 14 drives the turntable 8 until the turntable 8 is driven to rotate at all rotation angles. Let it continue.

  On the other hand, if the microcomputer 14 determines in step 48 that the turntable 8 has been rotationally driven at all rotational angles, the rotational drive of the turntable 8 is stopped and the movement of the disk D is stopped. The process of 07 is executed.

In the second step 07, when the microcomputer 14 determines that the disk D is in the normal reproduction position, the process proceeds to step 02 to start the evacuation operation, and the disk D is normally stored in the stocker 2. Note that the processing from step 06 to step 48 is repeated until the disk D moves to a normal reproduction position.

  As described above, according to the deck of this embodiment, the turntable 8 can be rotationally driven with a plurality of rotation angle patterns to move the disk. As a result, it is possible to increase the possibility that a disc that has not returned to the normal playback position in the first rotation process (rotation angle) can be returned to the normal playback position in the second rotation process, The frequency of clogging can be reduced.

  The deck of this embodiment has a configuration in which a temperature sensor 31 is added to the configuration of the deck of the first embodiment. The temperature sensor 31 is provided in the stocker 2 in which the disc is stored or in the turntable 8 or the like, and detects the temperature of the environment in which the disc is placed.

  With reference to the control flow shown in FIG. 10, disk control in this embodiment will be described. Since the deck of the present embodiment is the same as the deck 1 of the first embodiment, the description of the configuration of the deck is simplified by attaching the same reference numerals as those in the drawing of the first embodiment. In addition, also in this embodiment, the description will be made assuming that the state where the reproduction of the disc is finished (see FIG. 4D for the state of the disc D and the clamp arm 7) is started and the disc is stored (retracted) in the stocker. . In the control of this embodiment, the same processes as those of the control of the first embodiment shown in FIG. 6 are denoted by the same reference numerals, and the detailed description thereof is simplified.

  In this embodiment, when the microcomputer 14 determines in step 01 that the position of the disk D is abnormal, that is, the disk D is not in the normal reproduction position, the microcomputer 14 detects the temperature in the deck 1 by the temperature sensor 31. Is detected (S52).

  Furthermore, the microcomputer 14 extracts the rotation angle of the turntable 8 corresponding to the temperature detected by the temperature sensor 31 from the table in the memory 23 based on the detected temperature (S53). The memory 23 is a table in which the temperature in the deck 1 on which the disk D is placed, the deformation rate of the disk due to the temperature, and the rotation angle of the disk D driven by the turntable 8 according to the deformation rate are associated with each other. Has been built. Therefore, the angle at which the disk D is rotated can be estimated from the temperature detected by the temperature sensor 31.

  Next, the microcomputer 14 executes the process of step 03. Here, when the turntable 8 is rotationally driven, the angle sensor 22 detects the rotational angle of the disk D by the rotational drive of the turntable 8.

  Next, the microcomputer 14 compares the rotation angle associated with the temperature with the rotation angle detected by the angle sensor 22, and determines whether or not the subsequent rotation angle has reached the previous rotation angle. (S55). Here, if it is determined that the rotation angle detected by the angle sensor 22 does not satisfy the rotation angle associated with the temperature, the rotation drive of the turntable 8 is continued until the rotation angle is reached.

  On the other hand, when the microcomputer 14 determines in step 55 that the rotation angle detected by the angle sensor 22 has reached the rotation angle associated with the temperature, the microcomputer 14 executes the processes of steps 05 to 08. To do.

Then, after the process of step 08, the microcomputer 14 determines again whether or not the rotation angle detected by the angle sensor 22 has reached the rotation angle associated with the temperature (S60).
Here, if the microcomputer 14 determines that the rotation angle detected by the angle sensor 22 has not reached the rotation angle associated with the temperature, the process returns to step 08, and the microcomputer 14 causes the turntable 8 to perform all rotations. The drive of the turntable 8 is continued until it is rotationally driven at an angle.

  On the other hand, when the microcomputer 14 determines in step 60 that the rotation angle detected by the rotation sensor 22 has reached the rotation angle associated with the temperature, the rotation drive of the turntable 8 is stopped and the movement of the disk D is stopped. Is stopped, and the processing of step 06 and step 07 is executed again.

  In the second step 07, when the microcomputer 14 determines that the disk D is in the normal reproduction position, the process proceeds to step 02 to start the evacuation operation, and the disk D is normally stored in the stocker 2. Note that the processing from step 06 to step 60 is repeated until the disk D moves to a normal reproduction position.

  Thus, according to the disk drive of this embodiment, the temperature of the environment in which the disk is placed is detected, and the rotation state of the disk is based on the correspondence between the degree of deformation of the disk and the rotation angle of the disk due to that temperature. Can be judged. Therefore, even when the disk is deformed by heat, the disk can be rotated according to the degree of deformation, and the frequency of catching and clogging can be minimized.

  As a result, the disk can be smoothly ejected and retracted.

  As described above, according to the deck 1 of the present embodiment, the temperature of the environment in which the disk is placed is detected, and the deformation rate of the disk and the rotation angle of the disk according to the temperature are associated with each other as a reference. The rotational drive state of the turntable 8 can be determined.

  Therefore, even if the disk is deformed by heat, the turntable 8 is rotationally driven according to the degree of deformation to move the disk, and the frequency of catching and clogging can be minimized.

  The deck of the present embodiment stores the rotation angle of the disk (turntable), and rotates the disk by rotating the turntable at a rotation angle different from the previous rotation angle in the next rotation process. Yes. For this reason, the deck of this embodiment stores a history of the rotation angle in a storage area in the memory 23 in order to change the rotation angle of the disk. As a result, in the next process of rotating the disk, the disk can be rotated at a rotation angle different from the previous angle.

  With reference to the control flow shown in FIG. 11, the disk control in this embodiment will be described. Since the deck of the present embodiment is the same as the deck 1 of the first embodiment, the description of the configuration of the deck is simplified by attaching the same reference numerals as those in the drawing of the first embodiment. In addition, also in this embodiment, the state where the reproduction of the disc is completed (see FIG. 4D for the state of the disc D and the clamp arm 7) is started, and the disc D is stored (retracted) in the stocker 2. explain. In the control of this embodiment, the same processes as those of the control of the first embodiment shown in FIG. 6 are denoted by the same reference numerals, and the detailed description thereof is simplified.

In this embodiment, after the process of step 03, the rotation angle of the disk D is detected by the angle sensor 22. Then, the microcomputer 14 compares the rotation angle detected by the angle sensor 22 with the previous rotation angle recorded in the memory 23 and determines whether or not the rotation angle is different from the previous rotation angle ( S73).

  Here, if the microcomputer 14 determines that the disk D has not been rotated to a rotation angle different from the previous rotation angle, that is, has only been rotated to the same rotation angle as the previous rotation, the process proceeds to step 72. Returning, the rotation drive of the turntable 8 is continued.

  On the other hand, if the microcomputer 14 determines in step 73 that the rotation angle detected by the angle sensor 22 is different from the previous rotation angle, the microcomputer 14 stops the rotation processing of the disk D, and step 05 Processes ~ 08 are performed.

  In this embodiment, after the process of step 08, the microcomputer 14 again detects the rotation angle of the disk D by the angle sensor 22, and the detected rotation angle and the turntable 8 recorded in the memory 23 are stored in the previous time. The rotation angle when rotating in the opposite direction is compared, and it is determined whether or not the rotation angle is different from the previous rotation angle (S78).

  If the microcomputer 14 determines in step 78 that the rotation angle detected by the angle sensor 22 is the same as the previous rotation angle, the microcomputer 14 returns to step 08 and continues the rotation drive of the turntable 8.

  On the other hand, when the microcomputer 14 determines in step 78 that the rotation angle detected by the angle sensor 22 is a rotation angle different from the previous rotation angle, the rotation drive of the turntable 8 is stopped and the movement of the disk D is stopped. Then, the processing of step 06 and step 07 is executed again.

  In the second step 07, when the microcomputer 14 determines that the disk D is in a normal reproduction position, the process proceeds to step 71, where the evacuation operation is started, and the disk D is normally stored in the stocker 2. Note that the processing from step 06 to step 78 is repeated until the disk D moves to a normal reproduction position.

  As described above, according to the deck 1 of this embodiment, the turntable 8 can be rotationally driven at a rotation angle different from the previous time. Accordingly, it is possible to increase the possibility that a disc that has not returned to the normal reproduction position by the first rotation process (rotation angle) can be returned to the normal reproduction position by the second rotation process (rotation angle). As a result, the frequency of disk catching and clogging can be minimized.

  The deck according to the present embodiment is characterized in that when a disk cannot be normally played back when the disk is taken out from the stocker and played (read), control is performed so that the disk is played back normally.

  With reference to the control flow shown in FIG. 12, the disk control in this embodiment will be described. Since the deck of the present embodiment is the same as the deck 1 of the first embodiment, the description of the configuration of the deck is simplified by attaching the same reference numerals as those in the drawing of the first embodiment.

  First, the microcomputer 14 (see FIG. 3) takes out the disk D from the stocker 2 and sets the disk D on the turntable 8. Next, the microcomputer 14 uses the contact sensor 21 to detect whether the disk D is in contact with an illegal place in the deck 1 or whether the disk D is in contact with a place other than the turntable 8. A determination is made (S80).

  If it is determined in step 80 that there is no abnormality in the position of the disk D, that is, the disk D is in a normal reproduction position, the reproduction process of the disk D is started (S81).

  On the other hand, when the microcomputer 14 determines that the position of the disk D is abnormal in step 80, that is, the disk D is not in the normal reproduction position, the microcomputer 14 moves the disk D to the normal reproduction position. Processing for rotationally driving the turntable 8 is executed (S82).

  Next, the microcomputer 14 executes a second position detection process for the disk D (S83). If the microcomputer 14 determines that the disk D is in a normal reproduction position, the microcomputer 14 proceeds to step 81 and starts a reproduction operation.

  On the other hand, if the microcomputer 14 determines in step 83 that the disk D is not in the normal playback position, the microcomputer 14 moves the clamp arm 7 to perform the disk storage operation as shown in FIG. The process is started (S84).

  Then, the microcomputer 14 takes out a disk different from the disk D stored in the stocker 2 (S85), returns to step 80, and repeats the process of determining whether or not the disk is in a normal reproduction position.

  In this way, the deck of this embodiment performs the process of playing another disk without forcibly playing a disk that cannot be played, so the time during which the disk playback is stopped can be shortened as much as possible. As a result, the user can continuously play the disc, and the user's feeling of waiting for the playback time can be eliminated.

  In addition, the deck of this embodiment stores a disc that cannot be played back in the stocker, and performs the process of playing back another disc on a case-by-case basis, so that the disc to be played back is extremely deformed. However, it is possible to prevent problems that occur in the deck such as a disk being caught inside the deck.

1 is a perspective view of a deck according to Embodiment 1. FIG. FIG. 3 is a plan view of a main part of the deck according to the first embodiment. 2 is a block diagram illustrating a hardware configuration of a deck according to Embodiment 1. FIG. It is a figure which shows the basic operation state of the disk in a deck. It is a figure which shows the state in the stocker by the division | segmentation mechanism of a deck. 3 is a disk control flow according to the first embodiment. 10 is a disk control flow according to the second embodiment. It is a disk control flow of Example 3. It is a disk control flow of Example 4. 10 is a disk control flow according to the fifth embodiment. 10 is a disk control flow according to the sixth embodiment. 18 is a disk control flow according to the seventh embodiment.

Explanation of symbols

1 Disk drive (deck)
2 Stocker (disk storage shelf)
2a Stocker base 3 Swing arm 3a Auxiliary arm 4 Drive device 5 Elevator mechanism 6 Frame 7 Clamp arm (clamping means)
8 Turntable (Rotating means)
9 Optical pickup (reading means)
DESCRIPTION OF SYMBOLS 10 Movement path 11 Clamper 12 Dividing mechanism 13 Spindle motor 14 Microcomputer (control means)
15 A / D converter 16 Bass treble circuit 17 D / A converter 18 Volume circuit 19 Speaker 20 Speaker drive circuit 21 Contact sensor (detection means)
22 Angle sensor (detection means)
23 Memory 24 OS
25 Application program 26 Table 27 Timers 28a to 28f Movable stocker 29 Insert port 30 Roller (guidance means)
31 Temperature sensor D Disc D1-D6 Disc

Claims (7)

A rotating means for rotating the disc on which the information is recorded;
Reading means for reading information recorded on the disk rotated by the rotating means;
Detecting means for detecting whether or not the disk is in a predetermined position;
Control means for performing control to rotate the disk by the rotating means in order to move the disk to the predetermined position in response to detection that the disk is not at the predetermined position by the detecting means; A disk drive characterized by comprising.   The control means calculates a rotation angle from a rotation drive time of the rotation means for moving the disk to the predetermined position, and when the calculated rotation angle satisfies a predetermined angle, the disk by the rotation means The disk drive according to claim 1, wherein the step of stopping the rotation of the disk drive is executed.   The control means calculates a rotation angle of the rotation means from a pulse signal read by the reading means as the disk is rotated by the rotation means for moving the disk to the predetermined position, and the calculated angle is 2. The disk drive according to claim 1, wherein when the predetermined angle is satisfied, the step of stopping the rotation of the disk by the rotating means is executed.   The control means, after the rotation of the disk by the rotation means, further receives that the detection means detects that the disk is not in the predetermined position, and the rotation means causes the disk to be moved to the predetermined position. The disk drive according to claim 1, further comprising the step of further rotating the disk in a direction opposite to a rotation direction of rotation for moving to a position. A timer for measuring an elapsed time from when the detection means detects that the disk is not in the predetermined position;
The control means, after the rotation of the disk by the rotation means, receives a detection that the disk is not in the predetermined position by the detection means, and causes the timer to measure a predetermined time, thereby detecting the detection. 5. The disk drive according to claim 1, wherein the step of re-detecting whether the disk is at the predetermined position by means is executed. Provided outside the main body of the disk drive, and an insertion slot into which the disk is inserted into the main body;
A guide means provided in the vicinity of the insertion port, for guiding the disk to the inside or the outside of the main body;
The control means is further configured to detect that the disk is not in the predetermined position by the detection means after the rotation of the disk by the rotation means, and to remove the disk from the main body by the guidance means. The disk drive according to claim 1, wherein a step of moving to the disk is executed. A disk storage shelf for storing a plurality of disks;
A clamp means supported by the disk drive body, clamping the disk, and moving the disk to the rotating means or the storage shelf;
The control means, after the rotation of the disk by the rotation means, is further detected by the detection means that the disk is not in the predetermined position, and the clamp means removes the disk from the rotation means. 2. The disk drive according to claim 1, wherein the disk is stored in the disk storage shelf, and another disk of the storage shelf is moved to the predetermined position by the clamping means.

Images