JP2009026362A - Disk apparatus and method of recording and reproducing adapter-attached disk - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve stability in recording and reproducing and to prevent a damage of a pickup actuator when seeking the vicinity of the outermost circumference of an adapter-attached disk. <P>SOLUTION: When a disk discrimination means composed of software of a CPU 127 detects loading of the adapter-attached disk, the moving range of a pickup 107 is regulated to be within the range of an 8 cm disk and a range narrower than this, and speed limit, CLV operation, servo gain UP, and prohibition of recording are carried out. Moreover, in SEEK operation at the vicinity of the outermost circumference, the number of tracks to be moved are set to be smaller to prevent jumping out of the 8 cm disk. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an optical disc apparatus, and more particularly to stable recording / reproduction when a disc having an annular adapter fitted on the outer periphery of a disc-shaped recording medium having a diameter smaller than that of a normal disc is loaded in the device. It is related with the technique which performs control so that it may perform.

  For example, in an optical disc apparatus to which a disc-shaped recording medium such as CD, DVD, Blu-Ray is mounted, the disc-shaped recording medium is placed on a tray or inserted directly into a disc insertion slot without being stored in a cartridge. Some have a direct slot-in mechanism. In this type of disk device, there is provided a disk mounting mechanism that grips the outer periphery of the disk-shaped recording medium and automatically pulls the disk-shaped recording medium to a predetermined mounting position when the disk-shaped recording medium is inserted into the disk insertion slot. ing.

  When the recording medium is a CD, DVD, or Blu-Ray standard disc, there are a small-diameter disc having a diameter of 8 cm and a disc having a diameter of 12 cm. Usually, a disk having a diameter of 12 cm is often used, but there is also a disk having a small outer diameter and a diameter of 8 cm. When a CD-ROM having a diameter of 8 cm is mounted on the optical disc apparatus having the slot-in mechanism, an annular adapter having an inner diameter of 8 cm and an outer diameter of 12 cm is fitted on the outer periphery. Thus, the outer diameter of the CD-ROM having a diameter of 8 cm is apparently 12 cm in diameter, and can be used as a gripping member of the disk mounting mechanism. Further, even in the case of an optical disc apparatus that is not a slot-in mechanism, an 8 cm disc with an adapter attached can be loaded and used in the same manner as a 12 cm disc.

  The adapter is formed in a thin donut shape made of synthetic resin, and claw portions that are engaged with the outer periphery of the disk having a diameter of 8 cm are provided on the inner periphery every 120 degrees. As described above, in the case of a disk having a diameter of 8 cm, it is possible to mount the disk adapter having a direct slot-in mechanism by fitting an annular adapter to the outer periphery. Further, even a disk device that is not a direct slot-in mechanism can be used by loading a disk with an adapter.

  However, when the adapter is attached, the balance of the center of gravity of the entire disc is shifted and vibrations occur, or the outer periphery of the 8 cm disc is distorted, which may cause problems in recording and reproduction at high speed.

In Japanese Patent Application Laid-Open No. 11-025581, the data capacity is determined based on the disk information (TOC), and when the data capacity is small and it is considered that the disk is an 8 cm disk, the pickup is moved to a position facing the adapter to focus. Whether it is a disk with an adapter is determined by whether or not it can be turned on, and the rotation speed is limited to prevent the occurrence of vibration due to the eccentric center of gravity of the adapter and the adapter falling off within the apparatus.
Japanese Patent Laid-Open No. 11-025581

  In addition to the risk of vibration and adapter falling off, the above adapter-attached disc has a structure in which the adapter presses and holds the outer circumference of the disc in the inner circumferential direction. During playback, the servo may become unstable and a recording / playback error may occur.

  During recording and playback of data near the outermost periphery, the protector part for protecting the lens of the optical disk drive faces the adapter claw, and vibration, impact, and SEEK operation near the outermost periphery cause it to come out of the disk. If the focus servo is released for some reason, such as when the pickup has popped out, the lens protector may be caught by the claw of the adapter, and the actuator that drives the lens portion of the optical pickup may be damaged. Furthermore, Blu-ray Disc, the next-generation optical disc that has recently appeared, has the disc cover layer of 0.1 mm (CD: 1.2 mm, DVD: 0.6 mm), NA of 0.85, and wavelength of 405 nm. The distance between the ON disk and the lens is very narrow, about 0.3mm, and it is highly possible that the lens protector will come into contact with the adapter's claws just by trying to record / reproduce the outermost circumference. The Ray disk device records and reproduces data near the outermost circumference because the lens protector may come into contact with the nail of the adapter even at the lens's own weight position, which is out of focus due to the limitation of the focus drive range for thinning. Similarly, when the power is cut off, the actuator is damaged.

In order to solve the above-described problems, a disk device according to the present invention includes a first disk-shaped recording medium on which information is recorded, and an annular adapter having a smaller diameter than the first disk-shaped recording medium and fitted on the outer periphery. The second disc-shaped recording medium and the third disc-shaped recording medium having a smaller diameter than the first disc-shaped recording medium can be loaded, recorded and reproduced,
A disk mounting means for pulling the disk-shaped recording medium into the apparatus and mounting the disk-shaped recording medium on a disk mounting portion;
Disk rotating means for rotating the mounted disk-shaped recording medium;
A pickup that optically reads information stored in the disk-shaped recording medium;
Pickup moving means for moving the pickup in the radial direction of the disc-shaped recording medium;
In a disk device having
Disc diameter discriminating means for discriminating after the first, second and third disc-shaped recording media are loaded by the disc loading means;
Restriction means for restricting the movement range of the pickup movement means to the range of the small diameter medium when the disk diameter determination means detects that the second and third disk-shaped recording media are loaded. It is a characteristic.

The disk device of the present invention also includes a first disk-shaped recording medium on which information is recorded, and a second disk-shaped medium having a smaller diameter than that of the first disk-shaped recording medium and an annular adapter fitted to the outer periphery. A recording medium and a third disk-shaped recording medium having a smaller diameter than the first disk-shaped recording medium can be loaded, recorded and reproduced,
And it can record and play back multiple types of discs with different working distances.
A disk mounting means for pulling the disk-shaped recording medium into the apparatus and mounting the disk-shaped recording medium on a disk mounting portion;
Disk rotating means for rotating the mounted disk-shaped recording medium;
A pickup that optically reads information stored in the disk-shaped recording medium;
Pickup moving means for moving the pickup in the radial direction of the disc-shaped recording medium;
In a disk device having
Disc diameter discriminating means for discriminating after the first, second and third disc-shaped recording media are loaded by the disc loading means;
Disc discriminating means for discriminating the working distance of the disc medium,
When the disk diameter determining means detects that the second and third disk-shaped recording media are loaded, the moving range of the pickup moving means is restricted to the range of the small diameter medium, and the disk diameter determining means When detecting that the second disc-shaped recording medium is loaded and the disc discriminating unit detects that the disc-shaped recording medium has a working distance equal to or less than a predetermined value, And a restricting means for restricting the moving range of the pickup moving means to a range narrower than the capacity of the small-diameter medium.

The disk device of the present invention also includes a first disk-shaped recording medium on which information is recorded, and a second disk-shaped medium having a smaller diameter than that of the first disk-shaped recording medium and an annular adapter fitted to the outer periphery. It can be loaded with recording media, recorded and played back,
A disk mounting means for pulling the disk-shaped recording medium into the apparatus and mounting the disk-shaped recording medium on a disk mounting portion;
Disk rotating means for rotating the mounted disk-shaped recording medium;
A pickup that optically reads information stored in the disk-shaped recording medium;
Pickup moving means for moving the pickup in the radial direction of the disc-shaped recording medium;
In a disk device having
Disc diameter discriminating means for discriminating after the first and second disc-shaped recording media are mounted by the disc mounting means;
A restricting means for restricting a moving range of the pickup moving means to a range of the small diameter medium when the disk diameter determining means detects that the second disk-shaped recording medium is loaded;
It is characterized by providing.

The disk device of the present invention also includes a first disk-shaped recording medium on which information is recorded, and a second disk-shaped medium having a smaller diameter than that of the first disk-shaped recording medium and an annular adapter fitted to the outer periphery. It can be loaded with recording media, recorded and played back,
And it can record and play back multiple types of discs with different working distances.
A disk mounting means for pulling the disk-shaped recording medium into the apparatus and mounting the disk-shaped recording medium on a disk mounting portion;
Disk rotating means for rotating the mounted disk-shaped recording medium;
A pickup that optically reads information stored in the disk-shaped recording medium;
Pickup moving means for moving the pickup in the radial direction of the disc-shaped recording medium;
In a disk device having
Disc diameter discriminating means for discriminating after the first and second disc-shaped recording media are mounted by the disc mounting means;
Disc discriminating means for discriminating the working distance of the disc medium,
When the disk diameter determining means detects that the second disk-shaped recording medium is loaded, the movement range of the pickup moving means is restricted to the range of the small diameter medium, and the disk diameter determining means If the disk disc recording means detects that the disc-shaped recording medium has a working distance equal to or less than a predetermined value, the pickup further detects Control means for restricting the moving range of the moving means to a range narrower than the capacity of the small-diameter medium.

  In the disk apparatus of the present invention, the control means further prohibits the recording operation of the small-diameter medium when the disk diameter determining means detects that the previous second disk-shaped recording medium is loaded. , Is characterized by.

  Further, in the disk apparatus of the present invention, the control means further sets a reproduction mode near the outer periphery of the small diameter medium when the disk diameter determination means detects that the previous second disk-shaped recording medium is loaded. It is characterized by limiting as CLV only.

  In the disk apparatus of the present invention, the control means further detects a servo gain near the outer periphery of the small-diameter recording medium when the disk diameter determining means detects that the previous second disk-shaped recording medium is loaded. Is set higher than usual.

  In the disc apparatus of the present invention, the control means further detects from the inner periphery of the pickup by the pickup moving means when the disc diameter discrimination means detects that the previous second disc-shaped recording medium is loaded. Set the movement method to the vicinity of the outermost circumference to move to the inner circumference side from the normal target position once when moving more than a certain distance, and then move to the target position by short distance movement, It is characterized by.

  Further, in the disk apparatus of the present invention, when the control means further detects that the previous second disk-shaped recording medium is loaded by the disk diameter determining means, the pickup is in a certain range near the outermost periphery. When the recording / reproducing operation is not performed for a certain period of time in the inside, the pickup is controlled to move to an inner peripheral position outside the certain range.

Also, the adapter-attached disk recording / reproducing method of the disk apparatus according to the present invention includes a first disk-shaped recording medium on which information is recorded, and an annular adapter having a smaller diameter than the first disk-shaped recording medium and fitted on the outer periphery. The second disc-shaped recording medium and the third disc-shaped recording medium having a smaller diameter than the first disc-shaped recording medium can be loaded, recorded and reproduced,
Disk rotating means for rotating the mounted disk-shaped recording medium;
A pickup that optically reads information stored in the disk-shaped recording medium;
Pickup moving means for moving the pickup in the radial direction of the disc-shaped recording medium;
In a disk device having
Drawing the first or second disk-shaped recording medium into the apparatus and mounting it on a disk mounting unit;
Determining the first, second, and third disk-shaped recording media mounted on the disk mounting portion;
And a step of setting the movement range of the pickup moving means to be restricted to the range of the small-diameter medium when it is detected that the second and third disc-shaped recording media are loaded. To do.

The adapter-attached disk recording / reproducing method of the present invention also includes a first disk-shaped recording medium on which information is recorded, and a first disk-shaped recording medium having a smaller diameter than the first disk-shaped recording medium and an annular adapter fitted to the outer periphery. 2 disk-shaped recording medium and a third disk-shaped recording medium having a smaller diameter than the first disk-shaped recording medium can be loaded, recorded and reproduced,
And it can record and play back multiple types of discs with different working distances.
Disk rotating means for rotating the mounted disk-shaped recording medium;
A pickup that optically reads information stored in the disk-shaped recording medium;
Pickup moving means for moving the pickup in the radial direction of the disc-shaped recording medium;
In a disk device having
Drawing the first or second disk-shaped recording medium into the apparatus and mounting it on a disk mounting unit;
Determining the first, second, and third disk-shaped recording media mounted on the disk mounting portion;
Determining a working distance of the disk medium;
A step of setting the movement range of the pickup moving means to be restricted to the range of the small diameter medium when the disk diameter determining means detects that the second and third disk-shaped recording media are loaded;
The disc diameter discriminating unit detects that the second disc-shaped recording medium is loaded, and the disc discriminating unit detects that the disc-shaped recording medium has a working distance equal to or less than a predetermined value. In this case, there is a step of setting the moving range of the pickup moving means to be restricted to a range narrower than the capacity of the small-diameter medium.

The adapter-attached disk recording / reproducing method of the present invention also includes a first disk-shaped recording medium on which information is recorded, and a first disk-shaped recording medium having a smaller diameter than the first disk-shaped recording medium and an annular adapter fitted to the outer periphery. 2 disc-shaped recording media can be loaded, recorded and played back,
Disk rotating means for rotating the mounted disk-shaped recording medium;
A pickup that optically reads information stored in the disk-shaped recording medium;
Pickup moving means for moving the pickup in the radial direction of the disc-shaped recording medium;
In a disk device having
Drawing the first or second disk-shaped recording medium into the apparatus and mounting it on a disk mounting unit;
Determining the first and second disk-shaped recording media mounted on the disk mounting unit;
A step of setting the movement range of the pickup moving means to be restricted to the range of the small-diameter medium when it is detected that the second disk-shaped recording medium is loaded. is there.

The adapter-attached disk recording / reproducing method of the present invention also includes a first disk-shaped recording medium on which information is recorded, and a first disk-shaped recording medium having a smaller diameter than the first disk-shaped recording medium and an annular adapter fitted to the outer periphery. 2 disc-shaped recording media can be loaded, recorded and played back,
And it can record and play back multiple types of discs with different working distances.
Disk rotating means for rotating the mounted disk-shaped recording medium;
A pickup that optically reads information stored in the disk-shaped recording medium;
Pickup moving means for moving the pickup in the radial direction of the disc-shaped recording medium;
In a disk device having
Drawing the first or second disk-shaped recording medium into the apparatus and mounting it on a disk mounting unit;
Determining the first and second disk-shaped recording media mounted on the disk mounting unit;
Determining a working distance of the disk medium;
Setting the movement range of the pickup moving means to be restricted to the range of the small diameter medium when it is detected by the disk diameter determining means that the second disk-shaped recording medium is loaded;
The disc diameter discriminating unit detects that the second disc-shaped recording medium is loaded, and the disc discriminating unit detects that the disc-shaped recording medium has a working distance equal to or less than a predetermined value. In this case, there is a step of setting the moving range of the pickup moving means to be restricted to a range narrower than the capacity of the small-diameter medium.

The adapter-attached disk recording / reproducing method of the present invention further includes:
And a step of setting the recording operation of the small-diameter medium to be prohibited when it is detected by the disk-diameter determining means that the second disk-shaped recording medium is loaded. .

The adapter-attached disk recording / reproducing method of the present invention further includes:
Including a step of setting the playback mode of the small-diameter recording medium to be limited to CLV and limiting the playback speed when it is detected by the disc diameter determining means that the second disc-shaped recording medium is loaded. It is a feature.

Moreover, the adapter-attached disk recording / reproducing method of the disk device of the present invention further includes:
And a step of setting a servo gain near the outer periphery of the small-diameter recording medium higher than normal when the disk-diameter discriminating means detects that the previous second disk-shaped recording medium is loaded. It is what.

The adapter-attached disk recording / reproducing method of the present invention further includes:
When it is detected by the disc diameter discriminating means that the previous second disc-shaped recording medium has been loaded, the movement method from the inner circumference of the pickup to the vicinity of the outermost circumference by the pickup moving means is a movement of a certain distance or more. In some cases, the method includes a step of temporarily moving to the inner circumference side from the normal target position and then setting the moving position to the target position by a short distance movement.

The adapter-attached disk recording / reproducing method of the present invention further includes:
When it is detected by the disc diameter discriminating means that the previous second disc-shaped recording medium has been loaded, the recording / reproducing operation has not been performed for a certain period of time while the pickup is within a certain range near the outermost periphery. And a step of setting the pickup moving means to move to an inner peripheral position outside the predetermined range.

  As described above, according to the present invention, the movement range of the pickup is limited in advance by the determination result of the disk diameter determination means, so that the pickup can be prevented from jumping out to the adapter portion and the pickup can be prevented from being damaged.

  Further, according to the present invention, the pickup moving range is limited in advance by the discriminating result of the disc diameter discriminating means, and the pickup moving range is limited to a range narrower than the disc capacity for a disc having a short working distance. In the case of a disc with a short working distance, the pickup lens, lens base, and lens protector are prevented from coming into contact with the adapter pawl when the focus is on near the outermost periphery. Can be prevented.

  Further, according to the present invention, since the recording operation of the adapter mounted disk is not performed, it is possible to prevent the recording operation from being performed in an unstable state due to the adapter mounting.

  Further, according to the present invention, by limiting the playback speed of the mounted disk to CLV only, the servo is disengaged due to the increase in the rotational speed near the outermost periphery in the unstable state due to the adapter mounting, and the playback signal quality is improved. Deterioration can be prevented.

  Further, according to the present invention, by increasing the servo gain in the vicinity of the outermost periphery, it is possible to reduce the influence of disk distortion caused by mounting the adapter and perform stable operation.

  Further, according to the present invention, during a long-distance seek operation to the vicinity of the outermost periphery, after landing at a position earlier than usual, it moves finely to reach the target point, so that the pickup jumps out of the disc. By preventing this, it is possible to prevent the pickup from being damaged.

  In addition, according to the present invention, since the time for which the pickup waits in the vicinity of the outermost periphery is set to the minimum necessary level, even when the power is suddenly cut off during standby, the pickup lens, the lens base, and the lens protector are attached to the adapter claw. The possibility of damage from contact can be minimized.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a disk device and a disk recording / reproducing method for an adapter mounted disk device according to the present invention will be described below in detail with reference to the drawings.
(Embodiment 1)
The invention described in this specification will be described with reference to FIGS.

  FIG. 1 is a block diagram when the present invention is applied to a Blu-Ray disk device. The Blu-Ray disc device is generally capable of recording and reproducing CDs, DVDs, and Blu-Ray standard discs. Reference numeral 101 denotes a disk-shaped recording medium, for example, an optical disk. In general, there are CD, DVD, Blu-Ray, HD DVD standard optical discs, and the like. Reference numeral 102 denotes a disk mounting means. The disc mounting means 102 differs depending on the type of optical disc drive. The slim tray type optical disk drive shown in FIG. 1 has a structure in which the entire mechanism of the optical disk drive can be pulled out in the form of a tray to the outside of the apparatus, and the user directly places the disk-shaped recording medium 101 on the turntable 104 of the pulled-out mechanism. Is placed.

  The placed disc-shaped recording medium 101 is held on the turntable by a ratchet 105 at the center of the turntable 104. Reference numeral 103 denotes a disk rotating means, for example, a spindle motor. The spindle motor 104 is connected to the turntable 104 and rotates the disk-shaped recording medium 101 held on the turntable 104 under the control of the spindle control circuit 106. Reference numeral 107 denotes a pickup. The pickup 107 mounted on the Blu-Ray disc device includes two systems of optical systems, CD, DVD and BD. The optical system of CD, DVD system includes CD, DVD laser control circuit 108, CD, DVD dual wavelength laser diode 109, CD, coupling lens 110 for DVD, CD, half mirror 116 for DVD, CD, objective lens 118 for DVD, It is composed of a light receiving element 120 for CD and DVD.

  Similarly, the BD optical system also includes a BD laser control circuit 113, a BD laser diode 112, a BD coupling lens 111, a BD spherical aberration correction lens 114, a BD half mirror 117, a BD objective lens 119, and a BD. The light receiving element 121 is used. The spherical aberration correction lens 114 is driven by a small stepping motor (not shown) and a spherical aberration correction circuit 124, and corrects the spherical aberration due to the interlayer distance (75 μm, 100 μm) in the double-layer disc of the Blu-Ray disc. The CD and DVD objective lens 118 and the BD objective lens 119 are installed on the same base 115 and are driven in the focus and tracking directions by an actuator. In the present embodiment, an example in which the optical paths of the CD, DVD, and BD are configured independently is shown, but a configuration in which a part of the optical paths is shared for miniaturization is also possible. In addition, an apparatus in which an objective lens is shared by a CD, a DVD, and a BD and configured with one objective lens has already been put into practical use.

  Reference numeral 122 denotes a focus drive unit that drives the objective lens mount 115 in the focus direction by a focus actuator coil (not shown). A tracking driving circuit 123 drives the objective lens mount 115 in the tracking direction by a tracking actuator coil (not shown). Reference numeral 128 denotes a tilt drive circuit which drives the objective lens mount 115 in the radial tilt direction by a tilt actuator coil (not shown).

  The CD / DVD laser control circuit 108 controls the CD / DVD laser 109 to cause the CD / DVD playback laser to emit light at an appropriate level. Similarly, the BD laser control circuit 113 controls the BD laser emission means 112 to emit the BD reproduction laser at an appropriate level. The emitted CD, DVD, and BD lasers pass through the CD, DVD coupling lens 110, and BD coupling lens 111, respectively, through the CD, DVD half mirror 116, and BD half mirror 117, and the objective lens. The light is condensed by 118 and 119.

  Reflected light from the disk passes through the half mirrors 116 and 117 and is received and detected by the light receiving elements 120 and 121. The detected signal is sent to the signal processing circuit 125, and a signal processing method corresponding to each disk such as CD / DVD / DVD-RAM or BD is selected. Based on the selected signal processing method, an FE (focus error) is selected. ), TE (tracking error), AS (all sum / full addition), RF (reproduction signal), etc. are generated and sent to the control circuit 126. Reference numeral 129 denotes a traverse drive circuit, which is a pickup moving means (not shown). The pickup moving means is constituted by, for example, a stepping motor, a DC motor, a lead screw, and a rack attached to the pickup. The traverse drive circuit 129 drives the pickup moving means to drive the pickup 107 in the radial direction.

  The control circuit 126 is a digital signal processor, for example, and controls the focus driving means 122 and the tracking driving means 123 based on the received signal, controls the reproduction of data, switching between CD and DVD laser control, and the spindle control means 106 by the RF signal. Then, the spindle motor 103 is operated to control the rotation of the optical disc 101 and the traverse drive circuit 129 to move the pickup 107 in the radial direction. Reference numeral 127 denotes a CPU that controls the signal processing circuit 125 to select an optimal signal processing method for the type of disk that is supposed to be currently loaded, and also performs various control parameter settings, operation instructions, and the like to the control circuit 126. At the same time, the internal operation software constitutes a disc diameter discriminating means and a regulating means.

  Next, the actual operation of the disk device will be described. FIG. 3 is a flowchart showing the operation from when the disk apparatus of the present invention loads the disk until the start-up process is completed. At 301, a disk loading process is performed. For example, in a slim tray type disk apparatus, the disk loading process is such that the spindle motor 103, the turntable 104, the pickup 107 and the like come out of the apparatus together with the disk tray. A hole in the center of the disk 101 is fitted and fixed to the upper ratchet mechanism, and then inserted into the apparatus, so that loading is detected by a switch inside the apparatus.

  The slim tray type disk device generally corresponds to a 12 cm disk, an 8 cm disk, and an adapter mounted 8 cm disk. Next, at 302, the disc diameter is determined. Disc diameter can be discriminated from, for example, acceleration when the disc is rotated and disc capacity information as in JP-A-11-025581, or a sensor for discriminating the adapter-attached disc. It can also be discriminated with the acceleration when the disk is mounted and the disk is rotated. In any case, a 12 cm disc, an 8 cm disc, and an adapter mounted 8 cm disc may be discriminated by some method. Next, in the case of 303 or 304, if the adapter is an 8 cm disc or an 8 cm disc, a setting for restricting the movable range of the pickup is performed.

  Specifically, for example, in the case of a system having a stepping motor as a traverse drive means, the drive range can be limited by the distance by the number of feed pulses from the innermost circumferential position. If the movement distance per pulse is 0.1 mm, the movement distance is regulated in the range from the innermost circumference position to the outermost circumference of the data area. In the case of a DC motor, management by the moving distance cannot be performed, so the number of crossing tracks is calculated and managed from the disk address information, linear velocity, and track pitch.

  Of course, even in a system using a stepping motor, it is possible to regulate the movement range by using the disk address information, linear velocity, and track pitch, and in the unlikely event that a position shift occurs due to a stepping motor stepping out. For this reason, if there is a deviation by comparing the current position information by the stepping motor with the radial position information by the address information, the linear velocity, and the track pitch, correction can be performed. Then, after restricting the movable range of the pickup 107, other activation processing and adjustment processing are performed at 305 to complete the activation processing.

In the present embodiment, the Blu-Ray disc drive capable of recording and reproducing Blu-Ray, DVD, and CD standard discs has been described as an example, but the same applies to an apparatus capable of recording and reproducing only DVD and CD and other devices. Can be implemented. In this embodiment, the slim tray type disk device has been described as an example. However, a half height tray type disk device or a slot-in type disk device can be similarly implemented. In the present embodiment, a disk device corresponding to a 12 cm disk, an 8 cm disk, and an 8 cm disk with an adapter has been described as an example. However, a slot-in type that does not support an 8 cm disk but only supports a 12 cm disk and an 8 cm disk with an adapter. It can be similarly implemented with such a disk device.
(Embodiment 2)
Next, the invention described in this specification will be described with reference to FIGS.

The description of FIG. 1 is the same as that of the first embodiment, and a description thereof will be omitted.
The disk diameter conversion adapter for CD and DVD and the 8 cm disk currently on the market have a structure as shown in FIG. 201 is an 8 cm disk, and 202 is an adapter body. The adapter main body 201 is generally made of black resin, and the hinge portion 210 has an elastic structure that can be pressed against the main body of the adapter 201 by the slit 250. The pressing portion 220 is designed to be slightly narrower than the diameter of the 8 cm disc 202, and supports the 8 cm disc 202 so as to be detachable by pressing the 8 cm disc 202 from the outer periphery toward the inner periphery. Further, 240 is provided on the side corresponding to the data surface of the 8 cm disk, and 230 is provided on the opposite side, so that the 8 cm disk 201 is prevented from falling off the adapter 202. .

  Blu-ray discs have a disc cover layer of 0.1 mm (CD: 1.2 mm, DVD: 0.6 mm), NA of 0.85, and a wavelength of 405 nm. .3mm is very narrow. While the outermost data is recorded / reproduced, the center position of the lens is on the data area, but the outer periphery of the lens, the lens holder, and the lens protector rest on the disk drop prevention claw 240 on the data surface side. Even during the ON state, the lens or the lens protector collides with the disk drop prevention claw 240 on the data surface side of the disk. In order to avoid this, processing as shown in the flowchart of FIG. 4 is performed. FIG. 4 is a flowchart showing the operation from when the disk apparatus of the present invention loads a disk until the start-up process is completed.

  First, at 401, a disk loading process is performed. For example, in a slim tray type disk apparatus, the disk loading process is such that the spindle motor 103, the turntable 104, the pickup 107 and the like come out of the apparatus together with the disk tray. A hole in the center of the disk 101 is fitted and fixed to the upper ratchet mechanism, and then inserted into the apparatus, so that loading is detected by a switch inside the apparatus. The slim tray type disk device generally corresponds to a 12 cm disk, an 8 cm disk, and an adapter mounted 8 cm disk. Next, at 402, the disc diameter is determined. Disc diameter can be discriminated from, for example, acceleration when the disc is rotated and disc capacity information as in JP-A-11-025581, or a sensor for discriminating the adapter-attached disc. It can also be discriminated with the acceleration when the disk is mounted and the disk is rotated.

  In any case, a 12 cm disc, an 8 cm disc, and an adapter mounted cm disc may be discriminated by some method. Next, in 403 and 404, when the adapter is an 8 cm disc mounted on the adapter or an 8 cm disc, a setting for restricting the movable range of the pickup is performed. Specifically, for example, in the case of a system having a stepping motor as a traverse drive means, the drive range can be limited by the distance by the number of feed pulses from the innermost circumferential position. If the movement distance per pulse is 0.1 mm, the movement distance is regulated in the range from the innermost circumference position to the outermost circumference of the data area. In the case of a DC motor, management by the moving distance cannot be performed, so the number of crossing tracks is calculated and managed from the disk address information, linear velocity, and track pitch.

  Of course, even in a system using a stepping motor, it is possible to regulate the movement range by using the disk address information, linear velocity, and track pitch, and in the unlikely event that a position shift occurs due to a stepping motor stepping out. For this reason, if there is a deviation by comparing the current position information by the stepping motor with the radial position information by the address information, the linear velocity, and the track pitch, correction can be performed. Next, at 405, the working distance of the disc is determined. Since the working distance is determined for each disc type, the working distance can be determined using the disc discrimination result. In the example of the slim tray type Blu-Ray disc device of the present embodiment, the working distance is Blu-Ray disc: 0.30 mm, DVD disc: 0.85 mm, CD disc: 0.50 mm, and the disc of the adapter Since the protrusion on the data surface of the drop-off prevention claw 240 is generally about 0.50 mm at the maximum, the data near the outermost circumference of the disc is recorded at 8 cm with an adapter attached to a Blu-Ray and CD standard disc. Attempting to do so may damage the pickup.

  For this reason, a disc with a short working distance is discriminated at 406, and at 407, the radial movable range is further narrower than the data area of the 8 cm disc. The range is not limited to 240. Then, after restricting the movable range of the pickup 107, other activation processing and adjustment processing are performed at 408 to complete the activation processing.

In the present embodiment, a slim tray type disk device has been described as an example, but a half height tray type disk device or a slot-in type disk device can be similarly implemented. In the present embodiment, a disk device corresponding to a 12 cm disk, an 8 cm disk, and an 8 cm disk with an adapter has been described as an example. However, a slot-in type that does not support an 8 cm disk but only supports a 12 cm disk and an 8 cm disk with an adapter. It can be similarly implemented with such a disk device.
(Embodiment 3)
Next, the invention described in this specification will be described with reference to FIGS.

  1 and 2 are the same as those in the first embodiment and the second embodiment, and thus the description thereof is omitted.

  In FIG. 2, the 8 cm disc 201 is distorted because the vicinity of the outer periphery is always pressed by the pressing portion 220. Due to this distortion, tracking and focus servos tend to become unstable near the outermost circumference, and if the recording operation is performed in such a state, the disk cannot be normally played back, or recording is interrupted due to deviation of the servo. It is likely to occur. Also during reproduction, due to this distortion, the servo shifts due to high-speed rotation and the reproduction signal quality deteriorates due to the servo shift. Since it is necessary to avoid these influences, the following operation is performed.

  FIG. 5 is a flowchart showing the operation from when the disk apparatus of the present invention loads a disk until the start-up process is completed. At 501, a disk loading process is performed. For example, in a slim tray type disk apparatus, the disk loading process is such that the spindle motor 103, the turntable 104, the pickup 107 and the like come out of the apparatus together with the disk tray. A hole in the center of the disk 101 is fitted and fixed to the upper ratchet mechanism, and then inserted into the apparatus, so that loading is detected by a switch inside the apparatus. The slim tray type disk device generally corresponds to a 12 cm disk, an 8 cm disk, and an adapter mounted 8 cm disk.

  Next, at 502, the disc diameter is determined. Disc diameter can be discriminated from, for example, acceleration when the disc is rotated and disc capacity information as in JP-A-11-025581, or a sensor for discriminating the adapter-attached disc. It can also be discriminated with the acceleration when the disk is mounted and the disk is rotated. In any case, a 12 cm disc, an 8 cm disc, and an adapter mounted 8 cm disc may be discriminated by some method. Next, at 503, it is checked whether the adapter is an 8 cm disc or an 8 cm disc mounted, and if so, the processing of 504 to 508 is performed. At 504, a setting for restricting the movable range of the pickup is performed. Specifically, for example, in the case of a system having a stepping motor as a traverse drive means, the drive range can be limited by the distance by the number of feed pulses from the innermost circumferential position.

  If the movement distance per pulse is 0.1 mm, the movement distance is regulated in the range from the innermost circumference position to the outermost circumference of the data area. In the case of a DC motor, management by the moving distance cannot be performed, so the number of crossing tracks is calculated and managed from the disk address information, linear velocity, and track pitch.

  Of course, even in a system using a stepping motor, it is possible to regulate the movement range by using the disk address information, linear velocity, and track pitch, and in the unlikely event that a position shift occurs due to a stepping motor stepping out. For this reason, if there is a deviation by comparing the current position information by the stepping motor with the radial position information by the address information, the linear velocity, and the track pitch, correction can be performed. Then, the movable range of the pickup 107 is restricted. Next, it is checked whether or not the disc loaded in 505 can be recorded. If recording is possible, recording is prohibited in 506.

  In step 507, the playback speed is forcibly set to a playback speed lower than the maximum speed and to the CLV mode, for example, the supported minimum speed CLV mode so that stable playback can be performed even if there is distortion on the outer periphery of the disk. Further, at 508, the servo gain in the vicinity of the outermost periphery, for example, tracking and focus gain are increased more than usual. The amount to be increased is determined in consideration of the current servo characteristics, gain, phase margin, system resonance frequency, and reproduction capability due to scratches and defects. In addition, gain UP is performed near the outermost circumference, but gain setting in other areas is similarly performed in consideration of servo characteristics, gain, phase margin, system resonance frequency, and reproduction capability due to scratches and defects. However, the gain may be increased over the entire disk area.

  Next, at 509, other startup processing and adjustment processing are performed to complete the startup processing.

  In this embodiment, the case where recording prohibition, reproduction speed limitation, CLV setting, and servo gain UP near the outer periphery are all described as an example. However, any one of them is performed according to recording / reproduction performance with respect to distortion for each apparatus. If the above is selected and performed, it can be similarly implemented.

In the present embodiment, the Blu-Ray disc drive capable of recording and reproducing Blu-Ray, DVD, and CD standard discs has been described as an example, but the same applies to an apparatus capable of recording and reproducing only DVD and CD and other devices. Can be implemented. In this embodiment, the slim tray type disk device has been described as an example. However, a half height tray type disk device or a slot-in type disk device can be similarly implemented. In the present embodiment, a disk device corresponding to a 12 cm disk, an 8 cm disk, and an 8 cm disk with an adapter has been described as an example. However, a slot-in type that does not support an 8 cm disk but only supports a 12 cm disk and an 8 cm disk with an adapter. It can be similarly implemented with such a disk device.
(Embodiment 4)
Next, the invention described in this specification will be described with reference to FIGS.

  1 and 2 are the same as those in the first to third embodiments, and thus the description thereof is omitted.

  FIG. 6 is a flowchart showing the SEEK operation of the disk apparatus of the present invention.

  First, at 601, current address information is acquired. For example, if the address information is a CD-ROM, DVD-ROM, or BD-ROM disc, the address information on the disc is embedded in the recorded data, and the recordable CD-R, RW, DVD In the case of a disc of ± R, RW, BD-R, and RE standards, address information is included in a guide groove for recording data and a prepit formed in advance along the guide groove. Next, at 602, the current address is before the target address (if the data is recorded from the inner circumference to the outer circumference on a single layer disk or a multilayer disk, the inner layer side is the second layer on the multilayer disk. It is confirmed whether or not it is within a certain number of tracks on the outer circumference side if data is recorded from the outer circumference to the inner circumference called “opposite”, and if it is within the certain number of tracks, the SEEK process is completed.

  Otherwise, at 603, the number of tracks that need to be moved is calculated from the current address and the target address. At 603, the pickup 107 is moved by the traverse drive circuit 129, and the traverse SEEK is not performed. The tracking actuator 123 is driven by the tracking drive circuit 123 to determine whether the track number is within the range of multi-jumps. For example, if it is within the number of tracks to be subjected to multi-jump, multi-jump or interval jump is executed at 605 according to the number of moving tracks.

  Multi-jump is a moving method in which an acceleration pulse is applied to the tracking drive circuit 123 to drive a tracking actuator and move together while counting a certain number of tracks, and when a certain number of tracks are moved, a brake pulse is applied and stopped. It is used for moving from a dozen to a few hundred tracks. The interval jump is used for moving up to a dozen tracks by a moving method in which one track jump is repeated as many times as necessary. If a multi-jump or interval jump is executed at 605, the process returns to 601 again and the current address is checked again. If the target track position is reached at 602, SEEK ends.

If the number is outside the number of multi-jumps, at 606, the SEEK direction is from the inner circumference to the outer circumference and the SEEK destination is near the outermost circumference, or the SEEK direction is from the outer circumference to the inner circumference, and the SEEK destination is near the innermost circumference. Determine if it exists. Otherwise, in 607, the travel distance is calculated by the traverse drive circuit. For example, in a system using a stepping motor, the moving distance is determined by the number of driving pulses of the stepping motor. The number of moving pulses is generally

Number of moving pulses = n * track pitch / amount of movement per pulse (Formula 1)

Can be calculated with Here, the track pitch is determined by the disc standard, for example, 1.6 μm for the CD standard, 0.74 μm for the DVD standard, and 0.32 μm for the Blu-Ray standard. The amount of movement per pulse is determined by the configuration of the stepping motor, rack, and lead screw.

When the SEEK destination meets the conditions, several tens to several tens of tracks are moved from 608 to 608 so as to land at a certain number of positions before the outer circumference and inner circumference of the disk are prevented from jumping out due to a movement distance error or the like. It is common to calculate the movement distance after subtracting about 100 (= α). The number of pulses in this case is

Number of moving pulses = n * track pitch / amount of movement per pulse-α (Formula 2)

It becomes. In addition, if the adapter mounted disk and SEEK direction is from the inner circumference to the outer circumference at 609, the pickup may be damaged if the servo is released due to disk distortion or the like and jumps out of the disk when SEEK is performed near the outermost circumference. Therefore, the travel distance is further subtracted at 610 from the result of (Equation 2) so that SEEK is once performed to the inner peripheral position for safety. The number of moving pulses in this case is

Number of moving pulses = calculated value-β (Formula 3)

It becomes. Then, the pickup movement of the movement amount calculated in 611 is performed, and then the process returns to 601 to check the current address again, and the above operation is repeated until the target position is reached.

  Although the case where the traverse motor that moves the pickup in the radial direction is a stepping motor has been described as an example in the present embodiment, the present invention can be similarly implemented even when a DC motor is used. In the case of using a DC motor, there are a method of controlling the amount of movement by detecting the amount of rotation of the motor with an encoder attached to the DC motor, and a method of controlling the amount of movement simply by counting the number of track crossings.

  Further, in the present embodiment, even when a disk without an adapter is mounted, when moving a certain distance or more to the vicinity of the outermost circumference and the innermost circumference, a case where the movement distance is subtracted in advance and moved to the front is described as an example. However, it is usually possible to perform the same operation even when the movement amount is not subtracted. It can be similarly implemented by performing processing such as once moving with a smaller moving distance.

In the present embodiment, an example is described in which the amount of subtraction of the moving distance is set as the step number β of the stepping motor when the moving direction is from the inner circumference to the outer circumference and the moving distance is a certain distance or more in the adapter mounted disk. However, this β does not necessarily have to be constant for each disk type, and can be similarly implemented even if a different value is used depending on the stability of the servo for each disk type. Further, β does not need to be the number of steps of the stepping motor, and can be similarly implemented even when the number of tracks is predetermined for each type of disk.
(Embodiment 5)
Next, the invention described in this specification will be described with reference to FIGS.

  1 and 2 are the same as those in the first to fourth embodiments, and thus the description thereof is omitted.

  In FIG. 2, an 8 cm disc 201 is held by a disc drop prevention unit 240 on the recording surface side. Although this disk drop prevention unit 240 does not cover the data area of the 8 cm disk 201, the distance from the data area is very narrow. The lens 118, 119, the outer periphery of the lens 118, 119, and a lens protector (not shown) are in a state directly underneath. The thin Blu-Ray disc drive pickup 107 has a limited range of movement in the focus direction due to the thickness of the pickup itself, and two lenses (for CD and DVD) on three different working distance discs. Therefore, the lens protector is designed in such a position that the lens protector comes into contact with the disk drop-off prevention unit 240 even in its own weight position where no current flows through the focus actuator coil.

  Even if it is not such a design, there is a possibility of contact depending on the rotational position of the disk 101 when the entire disk 101 or the turntable 104 is shaken. If the power supply of the apparatus is cut off while the pickup 107 is reproducing data near the outer periphery, or if the servo is released due to a large impact, the actuator coil will be damaged.

  Usually, while recording or reproduction is not being performed, hold track processing is performed to hold the current reproduction position. However, the pickup 107 is in the vicinity of the outer periphery, and the lens protector or lens is applied to the disk drop prevention unit 240. If it is in the position, if the recording / playback command is not received for a certain period of time, the hold track processing is temporarily stopped, and the lens protector or the lens of the pickup 107 is not applied to the disk drop prevention unit 240. By moving to the position and performing the process of changing the hold track position, it is possible to reduce the possibility of the pickup being damaged due to the unexpected power shutoff or the servo coming off due to the impact.

  The disk device and the disk-attached disk recording / reproducing method of the disk device according to the present invention prevent the pickup from popping out to the adapter portion by limiting the movement range of the pickup based on the determination result of the disk diameter determining means in advance. For discs with short working distances, the pickup lens, lens base, and lens protector are prevented from coming into contact with the adapter claws during focusing on near the outermost circumference, so that the recording operation of the adapter-equipped disc is not performed. By preventing the recording operation in an unstable state due to the adapter mounting and limiting the playback speed of the mounted disk to CLV only, the rotation speed near the outermost circumference increases in the unstable state due to the adapter mounting. Servo near the outermost circumference is prevented by preventing servo dislodgement and deterioration of playback signal quality. By raising the in-line, the effect of disc distortion due to the adapter mounting is reduced and stable operation is performed. During long-distance seek operation near the outermost periphery, the vehicle moves finely after landing on the near side. Since the target point is reached, the pickup is surely prevented from jumping out of the disk, the pickup is prevented from being damaged, and the time the pickup waits near the outermost circumference is minimized. Even if the power supply is suddenly cut off, the possibility of the pickup lens, lens base, and lens protector coming into contact with the adapter claws and damaging them is minimized. As well as stable operation.

Block diagram when the present invention is applied to a Blu-Ray disk device Disc diameter conversion adapters for CDs and DVDs and 8cm discs currently available on the market The flowchart which shows operation | movement until the disk apparatus of this invention loads a disk and a starting process is completed. The flowchart which shows operation | movement until the disk apparatus of this invention loads a disk and a starting process is completed. The flowchart which shows operation | movement until the disk apparatus of this invention loads a disk and a starting process is completed. Flowchart showing the SEEK operation of the disk device of the present invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 101 Disc-shaped recording medium 102 Disc mounting means 103 Disc rotation means 104 Turntable 105 Ratchet 106 Spindle control circuit 107 Pickup 108 CD, DVD laser control circuit 109 CD, DVD dual wavelength laser diode 110 CD, DVD coupling lens 111 BD cup Ring lens 112 BD laser diode 113 BD laser control circuit 114 BD spherical aberration correction lens 115 Mount 116 CD, DVD half mirror 117 BD half mirror 118 CD, DVD objective lens 119 BD objective lens 120 CD, DVD light receiving Element 121 BD light receiving element 122 Focus drive means 123 Tracking drive circuit 124 Spherical aberration correction circuit 125 Signal processing circuit 126 Control circuit 12 CPU
128 Tilt Drive Circuit 129 Traverse Drive Circuit

Claims (18)

A first disk-shaped recording medium on which information is recorded, a second disk-shaped recording medium having a smaller diameter than that of the first disk-shaped recording medium, and an annular adapter fitted to the outer periphery; and the first disk A third disk-shaped recording medium having a smaller diameter than the recording medium can be loaded, recorded and reproduced,
A disk mounting means for pulling the disk-shaped recording medium into the apparatus and mounting the disk-shaped recording medium on a disk mounting portion;
Disk rotating means for rotating the mounted disk-shaped recording medium;
A pickup that optically reads information stored in the disk-shaped recording medium;
Pickup moving means for moving the pickup in the radial direction of the disc-shaped recording medium;
In a disk device having
Disc diameter discriminating means for discriminating after the first, second and third disc-shaped recording media are loaded by the disc loading means;
Restriction means for restricting the movement range of the pickup moving means to the range of the small diameter medium when the disk diameter determining means detects that the second and third disk-shaped recording media are loaded;
A disk device comprising: A first disk-shaped recording medium on which information is recorded, a second disk-shaped recording medium having a smaller diameter than that of the first disk-shaped recording medium, and an annular adapter fitted to the outer periphery; and the first disk A third disk-shaped recording medium having a smaller diameter than the recording medium can be loaded, recorded and reproduced,
And it can record and play back multiple types of discs with different working distances.
A disk mounting means for pulling the disk-shaped recording medium into the apparatus and mounting the disk-shaped recording medium on a disk mounting portion;
Disk rotating means for rotating the mounted disk-shaped recording medium;
A pickup that optically reads information stored in the disk-shaped recording medium;
Pickup moving means for moving the pickup in the radial direction of the disc-shaped recording medium;
In a disk device having
Disc diameter discriminating means for discriminating after the first, second and third disc-shaped recording media are loaded by the disc loading means;
Disc discriminating means for discriminating the working distance of the disc medium,
When the disk diameter determining means detects that the second and third disk-shaped recording media are loaded, the moving range of the pickup moving means is restricted to the range of the small diameter medium, and the disk diameter determining means When detecting that the second disc-shaped recording medium is loaded and the disc discriminating unit detects that the disc-shaped recording medium has a working distance equal to or less than a predetermined value, Restriction means for restricting the movement range of the pickup movement means to a range narrower than the capacity of the small-diameter medium;
A disk device comprising: A first disk-shaped recording medium on which information is recorded and a second disk-shaped recording medium having a smaller diameter than that of the first disk-shaped recording medium and having an annular adapter fitted to the outer periphery can be loaded and recorded / reproduced. ,
A disk mounting means for pulling the disk-shaped recording medium into the apparatus and mounting the disk-shaped recording medium on a disk mounting portion;
Disk rotating means for rotating the mounted disk-shaped recording medium;
A pickup that optically reads information stored in the disk-shaped recording medium;
Pickup moving means for moving the pickup in the radial direction of the disc-shaped recording medium;
In a disk device having
Disc diameter discriminating means for discriminating after the first and second disc-shaped recording media are mounted by the disc mounting means;
A restricting means for restricting a moving range of the pickup moving means to a range of the small diameter medium when the disk diameter determining means detects that the second disk-shaped recording medium is loaded;
A disk device comprising: A first disk-shaped recording medium on which information is recorded and a second disk-shaped recording medium having a smaller diameter than that of the first disk-shaped recording medium and having an annular adapter fitted to the outer periphery can be loaded and recorded / reproduced. ,
And it can record and play back multiple types of discs with different working distances.
A disk mounting means for pulling the disk-shaped recording medium into the apparatus and mounting the disk-shaped recording medium on a disk mounting portion;
Disk rotating means for rotating the mounted disk-shaped recording medium;
A pickup that optically reads information stored in the disk-shaped recording medium;
Pickup moving means for moving the pickup in the radial direction of the disc-shaped recording medium;
In a disk device having
Disc diameter discriminating means for discriminating after the first and second disc-shaped recording media are mounted by the disc mounting means;
Disc discriminating means for discriminating the working distance of the disc medium,
When the disk diameter determining means detects that the second disk-shaped recording medium is loaded, the movement range of the pickup moving means is restricted to the range of the small diameter medium, and the disk diameter determining means If the disk disc recording means detects that the disc-shaped recording medium has a working distance equal to or less than a predetermined value, the pickup further detects Control means for restricting the moving range of the moving means to a range narrower than the capacity of the small-diameter medium;
A disk device comprising: The disk device according to claim 1, wherein
The control unit further prohibits the recording operation of the small-diameter medium when the disk-diameter determining unit detects that the previous second disk-shaped recording medium is loaded;
A disk device characterized by the above. The disk device according to claim 1, wherein
The control means further restricts the reproduction mode near the outer periphery of the small-diameter medium to CLV only when the disk diameter discrimination means detects that the previous second disk-shaped recording medium is loaded.
A disk device characterized by the above. The disk device according to claim 1, wherein
The control means further sets a servo gain near the outer periphery of the small-diameter recording medium higher than usual when the disk diameter determining means detects that the previous second disk-shaped recording medium is loaded;
A disk device characterized by the above. The disk device according to claim 1, wherein:
The control means further includes a moving method from the inner periphery of the pickup to the vicinity of the outermost periphery by the pickup moving means when the disk diameter determining means detects that the previous second disk-shaped recording medium is loaded. If it is a movement over a certain distance, set it so that it moves once to the inner circumference side from the normal target position, and then moves to the target position by a short distance movement.
A disk device characterized by the above. The disk device according to claim 1, wherein
Further, when the control means detects that the previous second disc-shaped recording medium is loaded by the disc diameter discriminating means, recording is performed for a certain period of time while the pickup is within a certain range near the outermost periphery. Control to move the pickup to an inner circumferential position outside the certain range when the reproduction operation is not performed;
A disk device characterized by the above. A first disk-shaped recording medium on which information is recorded, a second disk-shaped recording medium having a smaller diameter than that of the first disk-shaped recording medium, and an annular adapter fitted to the outer periphery; and the first disk A third disk-shaped recording medium having a smaller diameter than the recording medium can be loaded, recorded and reproduced,
Disk rotating means for rotating the mounted disk-shaped recording medium;
A pickup that optically reads information stored in the disk-shaped recording medium;
Pickup moving means for moving the pickup in the radial direction of the disc-shaped recording medium;
In a disk device having
Drawing the first or second disk-shaped recording medium into the apparatus and mounting it on a disk mounting unit;
Determining the first, second, and third disk-shaped recording media mounted on the disk mounting portion;
A step of setting the movement range of the pickup moving means to be restricted to the range of the small diameter medium when it is detected that the second and third disk-shaped recording media are loaded;
An adapter-attached disk recording / reproducing method comprising: A first disk-shaped recording medium on which information is recorded, a second disk-shaped recording medium having a smaller diameter than that of the first disk-shaped recording medium, and an annular adapter fitted to the outer periphery; and the first disk A third disk-shaped recording medium having a smaller diameter than the recording medium can be loaded, recorded and reproduced,
And it can record and play back multiple types of discs with different working distances.
Disk rotating means for rotating the mounted disk-shaped recording medium;
A pickup that optically reads information stored in the disk-shaped recording medium;
Pickup moving means for moving the pickup in the radial direction of the disc-shaped recording medium;
In a disk device having
Drawing the first or second disk-shaped recording medium into the apparatus and mounting it on a disk mounting unit;
Determining the first, second, and third disk-shaped recording media mounted on the disk mounting portion;
Determining a working distance of the disk medium;
A step of setting the movement range of the pickup moving means to be restricted to the range of the small diameter medium when the disk diameter determining means detects that the second and third disk-shaped recording media are loaded;
The disc diameter discriminating unit detects that the second disc-shaped recording medium is loaded, and the disc discriminating unit detects that the disc-shaped recording medium has a working distance equal to or less than a predetermined value. If so, a step of setting the movement range of the pickup moving means to be restricted to a range narrower than the capacity of the small-diameter medium;
An adapter-attached disk recording / reproducing method comprising: A first disk-shaped recording medium on which information is recorded and a second disk-shaped recording medium having a smaller diameter than that of the first disk-shaped recording medium and having an annular adapter fitted to the outer periphery can be loaded and recorded / reproduced. ,
Disk rotating means for rotating the mounted disk-shaped recording medium;
A pickup that optically reads information stored in the disk-shaped recording medium;
Pickup moving means for moving the pickup in the radial direction of the disc-shaped recording medium;
In a disk device having
Drawing the first or second disk-shaped recording medium into the apparatus and mounting it on a disk mounting unit;
Determining the first and second disk-shaped recording media mounted on the disk mounting unit;
A step of setting the movement range of the pickup moving means to be restricted to the range of the small-diameter medium when it is detected that the second disc-shaped recording medium is loaded;
An adapter-attached disk recording / reproducing method comprising: A first disk-shaped recording medium on which information is recorded and a second disk-shaped recording medium having a smaller diameter than that of the first disk-shaped recording medium and having an annular adapter fitted to the outer periphery can be loaded and recorded / reproduced. ,
And it can record and play back multiple types of discs with different working distances.
Disk rotating means for rotating the mounted disk-shaped recording medium;
A pickup that optically reads information stored in the disk-shaped recording medium;
Pickup moving means for moving the pickup in the radial direction of the disc-shaped recording medium;
In a disk device having
Drawing the first or second disk-shaped recording medium into the apparatus and mounting it on a disk mounting unit;
Determining the first and second disk-shaped recording media mounted on the disk mounting unit;
Determining a working distance of the disk medium;
Setting the movement range of the pickup moving means to be restricted to the range of the small diameter medium when it is detected by the disk diameter determining means that the second disk-shaped recording medium is loaded;
The disc diameter discriminating unit detects that the second disc-shaped recording medium is loaded, and the disc discriminating unit detects that the disc-shaped recording medium has a working distance equal to or less than a predetermined value. If so, a step of setting the movement range of the pickup moving means to be restricted to a range narrower than the capacity of the small-diameter medium;
An adapter-attached disk recording / reproducing method comprising: The adapter-attached disk recording / reproducing method of the disk device according to claim 10 to 13, further comprising:
A step of setting the recording operation of the small-diameter medium to be prohibited when it is detected by the disk-diameter determining means that the second disk-shaped recording medium is loaded;
An adapter-attached disk recording / reproducing method for a disk device, comprising: The adapter-attached disk recording / reproducing method of the disk device according to claim 10 to 13, further comprising:
A step of setting the reproduction mode of the small-diameter recording medium so as to limit the reproduction speed when only the CLV is detected when the disc-diameter discriminating means detects that the second disc-shaped recording medium is loaded;
An adapter-attached disk recording / reproducing method comprising: The adapter-attached disk recording / reproducing method of the disk device according to claim 10 to 13, further comprising:
A step of setting a servo gain near the outer periphery of the small-diameter recording medium higher than normal when the disk-diameter discriminating means detects that the second disc-shaped recording medium is loaded;
An adapter-attached disk recording / reproducing method comprising: The adapter-attached disk recording / reproducing method of the dedisk apparatus according to claim 10 further comprises:
When it is detected by the disc diameter discriminating means that the previous second disc-shaped recording medium has been loaded, the movement method from the inner circumference of the pickup to the vicinity of the outermost circumference by the pickup moving means is a movement of a certain distance or more. In some cases, a step of temporarily moving to the inner peripheral side from the normal target position, and then setting to move to the target position by a short distance movement,
An adapter-attached disk recording / reproducing method comprising: The adapter-attached disk recording / reproducing method of the disk device according to claim 10 to 13, further comprising:
When it is detected by the disc diameter discriminating means that the previous second disc-shaped recording medium has been loaded, the recording / reproducing operation has not been performed for a certain period of time while the pickup is within a certain range near the outermost periphery. A step of setting the pickup moving means to move to an inner peripheral position outside the predetermined range;
An adapter-attached disk recording / reproducing method comprising:

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