WO2005096286A1

WO2005096286A1 - Drive controller, its method, its program, recording medium where the program is recorded, and information processor

Info

Publication number: WO2005096286A1
Application number: PCT/JP2005/006362
Authority: WO
Inventors: Yuji Yamada; Tomonori Nakada
Original assignee: Pioneer Corporation
Priority date: 2004-03-31
Filing date: 2005-03-31
Publication date: 2005-10-13

Abstract

An information processing section provided with a pickup (242) is supported movably on a guide shaft so supported as to bridge step parts facing each other, and a movement regulating click engages with a lead screw of a motor for movement. At the time of initialization for recognizing the position of the pickup (242), the same number of driving pulses as that of pulses for moving the pickup over the whole movable range (W) between the step parts are supplied to the motor for movement, and the outermost circumference position (A) is recognized as the position of the pickup (242). After initialization or information processing, the innermost circumference position (B) opposite to the outermost circumference position (A) at the time of initialization is set as a waiting position, and the pickup is moved. Since the movement is started from the innermost circumference position (B) at the time of initialization, only driving pulses required to move the pickup over the whole movable range (W) is supplied, and noise due to so-called tooth skipping or step out can be prevented at the time of initialization.

Description

Specification

Drive control device, its method, its program, recording medium on which the program is recorded, and information processing device

Technical field

[0001] The present invention recognizes the position of an information processing unit that performs at least one of a reading process of reading information recorded on a recording surface of a recording medium and a recording process of recording the information on the recording surface. The present invention relates to a drive control device, a method thereof, a program thereof, a recording medium storing the program, and an information processing device.

Background art

Conventionally, various configurations for recognizing the position of a pickup are known for a disk device that reads information from or records information on a disk-shaped recording medium such as an optical disk (for example, see Patent Reference 1 (see Patent Reference 3).

[0003] In the one described in Patent Document 1, when the pickup is positioned at the innermost circumference of the optical disc, the movement toward the inner circumference side is regulated by the regulation means. Then, the rotation of the motor for moving the pickup is detected by a Hall element used for rotation control, and it is determined that the pickup is positioned at the innermost circumference. However, the configuration described in Patent Document 1 requires a Hall element for detecting the rotation state of the motor, and the configuration cannot be simplified.

[0004] In the device disclosed in Patent Document 2, a motor current of a motor for moving a pickup is detected by a current detecting unit, and a pulsating component generated at the time of phase switching is detected by a pulsating component detecting unit. When the pickup is located at the innermost periphery of the optical disk, the movement is regulated by contacting the regulating means. At this time, a configuration is adopted in which the pulsating flow component at the time of phase switching disappears, and it is recognized that it is located at the innermost circumference. However, with the configuration described in Patent Document 2, the circuit configuration for detecting the motor current becomes complicated, and it is difficult to simplify the configuration.

[0005] In the device described in Patent Document 3, a pickup is slidably supported by a guide shaft fixed to a support member of a chassis plate. Further, a mating projection provided on the pickup is engaged with the tooth surface of the lead screw connected to the drive shaft of the stepping motor. And When recognizing the position of the pickup, the number of drive norses proportional to the number greater than the value corresponding to the pickup movement range is supplied to the stepping motor, the pickup is forcibly brought into contact with the support member, and the center of the optical axis of the objective lens is moved. The position of the pickup is accurately aligned with the outermost position of the optical disk, and the count value of the internal counter is preset to the maximum value, thereby normalizing the position of the pickup. When the pickup is forcibly brought into contact with the support member, the synchronizing projection is stepped out to prevent the generation of harsh sounds due to jumping over the tooth surface of the lead screw. However, in the configuration described in Patent Document 3, the shape relationship between the tooth surface for synchronism and the mating projection is strict, and it is difficult to improve productivity. In addition, step-out prevents the projections from jumping over the tooth surface of the lead screw and preventing generation of unpleasant noise. On the other hand, a drive pulse is supplied to the stepping motor, which may cause pulsation-like noise during the rotation. There is.

Patent Document 1: JP-A-2003-187466 (page 4, left column, page 5, right column)

Patent Document 2: Japanese Patent Application Laid-Open No. 2003-134879 (page 3, right column—page 5, right column)

Patent Document 3: Japanese Patent Application Laid-Open No. 2002-109839 (page 3 right column-page 8 left column)

Disclosure of the invention

Problems to be solved by the invention

[0007] As described above, in the configuration using the Hall element described in Patent Document 1, a configuration for detecting the rotation state of the motor is required, and the configuration cannot be simplified. Further, in the configuration described in Patent Document 2 that detects a motor current, the circuit configuration is complicated, and it is difficult to simplify the configuration. Further, in the configuration described in Patent Document 3 in which a drive pulse is supplied more than the value corresponding to the pickup moving range to force the pickup to abut on the support member, the pickup is supplied to the stepping motor even after the movement is restricted. For example, there is a problem that a pulsation-like noise may be generated depending on the drive panel to be used.

[0008] The present invention has been made in view of the above-described circumstances, and the like. The purpose is to provide.

Means for solving the problem

[0009] In the invention according to claim 1, the movable range is regulated by the regulating means, and the driving means is driven. At least one of a reading process for reading information recorded on a recording surface of a recording medium, which is moved within the movable range, and a recording process for recording the information on the recording surface. A drive control device for controlling a movement state of an information processing unit to be implemented, wherein the drive control unit controls the driving unit to drive the entire range of the movable range for a time period in which the information processing unit can substantially move. Position recognizing means for recognizing the position of the information processing unit moved by driving as an end position in the moving direction within the movable range, and controlling the driving means by the position recognizing means. When recognizing the completion of the process of moving the information processing section to the end position, the drive of the driving means is controlled to move the information to a standby position which is the end position opposite to the recognized end position. Processing unit Position setting means for the process of moving to a drive control apparatus characterized by comprising a.

[0010] The invention according to claim 5 is an information processing for performing at least one of a reading process of reading information recorded on a recording surface of a recording medium and a recording process of recording the information on the recording surface. Controlling the driving means for moving the information processing unit within a time period in which the information processing unit can be substantially moved in the entire movable range restricted by the control means, and moving the information processing unit in the movable range within the movable range. A drive control device for causing a position recognizing means to recognize the end position in the moving direction at the time, wherein the position recognizing means recognizes the position of the information processing unit, and detects a small amount of the reading process and the recording process. If at least one of the completions of at least one of the implementations is recognized, the driving of the driving unit is controlled, and the end opposite to the end position recognized by the position recognition unit. A drive control apparatus characterized by comprising a position to the standby position with a position setting means to the processing for moving the processing unit.

[0011] In the invention according to claim 11, the movable range is regulated by the regulating unit by the computing unit, and the movable unit is moved within the movable range by driving of the driving unit, and is recorded on the recording surface of the recording medium. A driving control method for controlling a movement state of an information processing unit that performs at least one of a reading process for reading the information and a recording process for recording the information on the recording surface, wherein the arithmetic unit includes: Controlling the driving unit to drive the information processing unit in a time period in which the information processing unit can be substantially moved in the entire movable range to thereby position the information processing unit. Recognizing the end position in the movement direction during the movement within the movable range, and driving the driving unit so that the information processing unit is moved to the end position opposite to the recognized end position. A drive control method, wherein the control is performed such that the opposite end position is set to a standby position.

[0012] The invention according to claim 12 is at least one of a reading process of reading information recorded on a recording surface of a recording medium and a recording process of recording the information on the recording surface by the arithmetic means. Controlling the driving of the driving means for moving the information processing unit in a time period in which the information processing unit can be moved substantially in the entire movable range restricted by the restriction means, and moves the information processing unit to the position. A drive control method for causing a position recognition unit to recognize an end position in the movement direction during the movement within a possible range, wherein the calculation unit recognizes a position of the information processing unit by the position recognition unit, and Upon recognizing at least one of the completion of the execution of at least one of the reading process and the recording process, the end position recognized by the position recognizing means is determined. A drive control method, comprising: controlling the drive of the driving means so as to move the information processing unit to an opposite end position to control the end position on the opposite side to be a standby position. is there.

[0013] An invention according to claim 13 is a drive control program that causes an arithmetic unit to function as the drive control device according to any one of claims 1 to 10.

[0014] An invention according to claim 14 is a drive control program that causes an arithmetic unit to execute the drive control method according to claim 11 or 12.

[0015] An invention according to claim 15 is a recording medium storing a drive control program, wherein the drive control program according to claim 13 or claim 14 is recorded in an arithmetic unit in a readable manner. It is.

[0016] The invention according to claim 16 is an information processing for performing at least one of a reading process of reading information recorded on a recording surface of a recording medium and a recording process of recording the information on the recording surface. A driving unit that moves the information processing unit along the recording surface; a restricting unit that restricts a movable range of the information processing unit that is moved by driving the driving unit; Claim 1 to control the moving situation An information processing device, comprising: the drive control device according to any one of item 10.

Brief Description of Drawings

FIG. 1 is a plan view showing a schematic configuration of a disk device according to a first embodiment of the present invention.

FIG. 2 is a partially cut-away plan view showing a schematic configuration of the disk device according to the first embodiment in a state where a tray section has advanced.

FIG. 3 is a partially cutaway plan view showing a disk processing unit of the disk device according to the first embodiment.

FIG. 4 is a waveform chart showing a drive panel with a two-phase drive frequency according to the first embodiment.

(A) is a waveform diagram showing a drive panel supplied to the phase A of the electric motor for movement, and (B) is a waveform diagram showing a drive pulse supplied to the phase B of the electric motor for movement.

FIG. 5 is a waveform chart showing a drive pulse of a micro-step drive frequency according to the first embodiment. FIG. 5 (A) is a waveform chart showing a drive panel for supplying a phase A of a moving electric motor.

(B) is a waveform diagram showing drive pulses supplied to the B phase of the electric motor for movement.

FIG. 6 is an explanatory diagram illustrating a movement state of a pickup according to the first embodiment.

FIG. 7 is a graph showing a moving speed based on a speed table of the moving electric motor according to the first embodiment.

FIG. 8 is a flowchart showing an operation of the disk device according to the first embodiment.

FIG. 9 is a plan view showing a schematic configuration of a disk device according to the second embodiment.

FIG. 10A is an explanatory diagram illustrating a rotating state of a disk processing unit of the disk device according to the second embodiment, and is a conceptual diagram of a state where an optical disk is located at a loading completion position.

FIG. 10B is an explanatory diagram illustrating a rotating state of a disk processing unit of the disk device according to the second embodiment, and is a conceptual diagram of a state when an optical disk is inserted or ejected. Explanation of symbols

[0018] 10 ···· Optical disk as a disk-shaped recording medium as recording medium 1 OA: Recording surface

200 · "Disk processing unit as information processing device

210… pedestal

212: Step portion as regulating means

230Processing / moving means as driving means

232 ··· Stepping motor

240 ... Information processing section

W… Movable range

BEST MODE FOR CARRYING OUT THE INVENTION

[First Embodiment]

Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. In the present embodiment, a disk device for recording and reading information on and from an optical disk which is a removable disk-shaped recording medium as a recording medium will be described as an example, but information may be read or recorded only. Further, the disk-shaped recording medium is not limited to an optical disk, but may be any disk-shaped recording medium such as a magnetic disk and a magneto-optical disk. Further, for example, any recording medium such as a cylindrical recording medium having a recording surface on the outer peripheral surface or a recording medium integrally provided can be used. Further, for example, a device having a tray for transporting an optical disc, which is mounted on an electric device such as a portable personal computer, and which is referred to as a so-called slim drive in which a pickup is integrally provided on the tray, or Any configuration such as a so-called slot-in type having no transport tray can be applied. For example, the present invention is not limited to a thin configuration that may be a single unit such as a game machine or a playback device that performs processing for recording and playback such as video data recording.

(Configuration of Disk Unit)

FIG. 1 is a partially cutaway plan view showing a schematic configuration of the disk device according to the first embodiment. FIG. 2 is a partially cutaway plan view showing a schematic configuration of a state where the tray unit of the disk device has advanced. FIG. 3 is a partially cutaway plan view showing a disk processing unit of the disk device. Fig. 4 shows a two-phase drive that is supplied to and driven by an electric motor for movement. (A) is a waveform diagram showing a drive panel supplied to the A phase of the electric motor for movement, and (B) is a waveform diagram showing a drive pulse supplied to the B phase of the electric motor for movement. FIG. FIG. 5 is a waveform diagram showing a drive pulse of a microstep drive frequency supplied to and driven by the electric motor for movement, (A) is a waveform diagram showing a drive panel supplied to the A phase of the electric motor for movement, (B) is a waveform diagram showing a drive pulse supplied to the B phase of the electric motor for movement. FIG. 6 is an explanatory diagram illustrating the movement of the pickup. FIG. 7 is a graph showing the moving speed based on the speed table of the moving electric motor.

1 and 2, reference numeral 100 denotes a disk device. The disk device 100 is a so-called slim disk mounted on an electric device such as a portable personal computer. The disc device 100 includes a reading process as information processing for reading information recorded on a recording surface (not shown) provided on at least one surface of a disc-shaped optical disc 10 as a disc-shaped recording medium that is detachably mounted. Performs recording processing, which is information processing for recording various information on the recording surface. The disk device 100 has, for example, a substantially rectangular box-shaped case body 110 that is made of metal, has an internal space, and has an open side. Further, in the case body 110, a tray part 120, a conveying means 130 for moving the tray part 120 forward and backward through the opening of the case body 110, and a drive as arithmetic means for controlling the operation of the entire disk device 100. A control circuit unit (not shown), which is a control device, is provided.

The tray section 120 includes a substantially plate-shaped tray 121 made of, for example, a synthetic resin, and a case 121 provided at one edge of the tray and retracted into the case body 110 by the conveying means 130. And an elongate plate 122 formed of an elongated plate with a synthetic resin or the like for closing the opening of the body 110. The tray 121 has an opening 121A formed substantially at the center thereof. In the tray section 120, a disk processing section 200 is arranged so that a part thereof faces the mounting opening 121A of the tray 121.

The transport means 130 includes a guide rail 131 disposed in the case body, an urging means (not shown), an urging releasing means 132, and the like. The guide rail 131 is disposed along the reciprocating direction through the opening of the tray unit 120, and guides the reciprocating movement of the tray unit 120. . The biasing means is provided between the tray 120 and a positioning part (not shown) provided in the case body. The urging means elastically deforms the tray portion 120 while being retracted into the case body 110, and applies an urging force, which is a restoring force due to the elastic deformation, to a state where the tray portion 120 advances through the opening. The urging release means 132 is disposed in the case body 110 so as to be able to be disengaged from a disengagement claw 123 provided on the tray portion 120. The urging release means 132 engages with the engagement / disengagement claw 123 in a state where the tray portion 120 is retracted into the case body 110 and the decorative plate 122 closes the opening, and the tray portion 120 is operated, for example, by operating an eject button. The engagement state of the engaging and disengaging claws 123 is released in response to the advance request of 120.

As shown in FIGS. 1 to 3, the disk processing unit 200 disposed in the tray unit 120 has a pedestal unit 210 formed, for example, in a flat octagonal shape in plan view from a metal plate. I have. The pedestal portion 210 is formed in a frame shape with a cutout portion 211 provided substantially at the center. Further, on the inner peripheral surface of the notch portion 211 of the pedestal portion 210, for example, two pairs of stepped portions 212 are provided as a pair of regulating means facing each other along the longitudinal direction of the pedestal portion 210.

As shown in FIG. 3, the pedestal portion 210 is provided with a disk rotation drive means 220 located at one end in the longitudinal direction near the periphery. The disk rotation driving means 220 includes an electric motor for rotation (not shown) which is a spindle motor, and a turntable 222 integrally provided on an output shaft 221A of the electric motor for rotation. The electric motor for rotation is controllably connected to the control circuit, and is driven by electric power supplied from the control circuit. The turntable 222 has an opening formed at the center of the optical disk 10! A substantially cylindrical rotating shaft 222A which is a shaft supporting portion which is inserted into the shaft hole and supported by a shaft, and a flange is formed on the outer peripheral surface of the rotating shaft 222A. And a flange portion 222B on which the periphery of the shaft hole of the optical disc 10 is mounted and supported. Then, the turntable 222 rotates together with the optical disc 10 that is supported by the drive of the rotating electric motor.

The pedestal 210 is provided with a processing moving means 230 as a driving means. The processing moving means 230 includes a pair of guide shafts 231 and a moving electric motor 232 which is, for example, a two-phase stepping motor. The pair of guide shafts 231 are formed, for example, in the shape of an elongated metal bar, and are supported in a state in which both ends in the axial direction are bridged between the step portions 212 of the pedestal portion 210. Is almost in line Are arranged substantially parallel to each other. In addition, the electric motor 232 for movement is controllably connected to the control circuit, and is driven by electric power to which the power of the control circuit is also supplied. An elongated rod-shaped lead screw 232A made of metal, for example, is coaxially and integrally connected to an output shaft (not shown) of the electric motor 232 for movement. An engaging groove 232B is provided spirally on the outer peripheral surface of the lead screw 232A.

Further, the pedestal 210 is provided with an information processing unit 240 supported by the processing moving means 230. The information processing section 240 includes a movement holding section 241 held in a state of being bridged between a pair of guide shafts 231. The movement holding part 241 has a holding part 241A for movably inserting the guide shaft 231 and a movement regulating part 232B for engaging with an engagement groove 232B of a lead screw 232A connected to an output shaft of the electric motor 232 for movement. And a claw portion 241B. Further, the movement holding unit 241 of the information processing unit 240 includes a light source (not shown), a lens 242A for converging light from the light source, and an optical sensor (not shown) for detecting light reflected from the optical disk 10. 242 are provided. The pickup 242 is connected to the control circuit so as to be able to transmit and receive signals. Under the control of the control circuit, the pickup 242 reads various information recorded on the recording surface of the optical disk 10 and outputs the information to the output circuit. A recording process for recording various information from the recording unit on a recording surface is performed.

As shown in FIGS. 1 and 2, a cover 250 is physically attached to the base 210. A long processing opening 251 is formed in the cover 250 at a substantially central portion thereof along the longitudinal direction of the pedestal 210 so as to correspond to the movement path of the pickup 242 and the position of the turntable 222.

The control circuit section is configured as a circuit configuration on a circuit board on which various electric components are mounted, for example. The control circuit unit includes, for example, a control unit as a drive control device as a program. The control means includes a drive control means, a position recognition means, a position setting means, and the like.

The drive control means controls the drive state of the moving electric motor 232. The driving state is controlled by appropriately supplying a driving panel having a different waveform to the electric motor 232 for movement. The driving pulse to be supplied is, for example, as shown in the waveform diagram of FIG. A two-layer drive frequency for phase drive control and a microphone-step drive frequency for micro-step control as shown in the waveform diagram of FIG. 5 for purposes such as a slight movement of the pickup 242 during information processing are exemplified. it can.

The position recognizing unit performs an initialization process for recognizing the position of the pickup 242. This initialization process is a process of causing the drive control means to perform control for moving the pickup 242 under predetermined conditions, and recognizing the position of the predetermined position as the position of the pickup 242. The position recognizing means performs initialization processing to the drive control means, for example, when power is supplied, when the optical disk 10 is loaded, or at a predetermined time measured by a separately provided time measuring means. Output a signal to start the initialization. The control by the drive control means in this initialization processing is performed by controlling the number of pulses necessary to move the entire distance in the movable range W which is the movable range of the pickup 242 between the stepped portions 212 of the pedestal 210. The same number, some! / ヽ is about several pulses! 数 Drive pulses of the number of pulses are supplied, and drive is performed for the time necessary to substantially move the entire range of the movable range W. The direction in which the pickup 242 is moved by the supply of the drive pulse is the direction in which the pickup 242 moves to the outermost peripheral position A corresponding to the outermost periphery of the optical disk 10, as shown in FIG. Supplied. The drive pulse is supplied at a drive frequency based on a speed table as shown in FIG. 7, for example. By the drive by the drive control means at the time of this initialization processing, the holding portion 241A of the pickup 242 comes into contact with the step portion 212 of the disk processing portion 200 opposite to the turntable 222. Since the movement restricting claw portion 241B engages with the engaging groove 232B of the lead screw 232A, the number of pulses of the drive pulse to be supplied is as large as several pulses as described above. After a few pulses, the lead screw 232A enters a so-called step-out state where it cannot rotate. When the required number of pulses described above is supplied, the supply of the driving pulse is completed in a state where the drive pulse is in contact with the step portion 212.

When the position recognizing unit recognizes the completion of the drive control of the moving electric motor 232 by the drive control unit in the initialization process, the position recognizing unit changes the position of the pickup 242 to the moving direction during the movement within the movable range W. It is recognized as the outermost peripheral position A which is the end position at Thereafter, the position recognizing means sets an internal counter (not shown) corresponding to the position of the pickup 242. , Set to the value of CTout indicating that it is the outermost peripheral position A. The value of this internal counter is, for example, an integer value.

When recognizing the standby state, the position setting means performs control to move the information processing section 240 to the standby position. This standby state means, for example, recognizing that the position of the pickup 242 has been recognized by the position recognizing means, completing the execution of information processing such as reading for recording or reproduction of information, or loading the optical disc 10. It is in a state of waiting for the next execution when there is no operation request of the disk device 100 to be executed next, for example, there is no execution request of information processing later. The standby position of the pickup 242 in the standby state is the optical disk opposite to the outermost position A, which is the position where the information processing unit 240 is moved and brought into contact with the step 212 in the initialization processing by the position recognition means. The innermost peripheral position B corresponding to the inner peripheral side of No. 10. Then, the position setting means outputs to the drive control means a signal indicating that the pickup 242 is to be moved to the innermost position B, which is a standby position, and the standby state is to be set to a standby state, and the standby processing is performed. . The control by the drive control means in this standby processing is such that the initialization processing is already completed and the position of the pickup 242 is in agreement with the value of the internal counter, so that the internal counter is at the innermost peripheral position B. The driving control means controls the driving control means to supply the driving electric motor 232 with the driving pulse of the driving frequency with the number of pulses corresponding to the state of the CTin value.

(Operation of Disk Device)

Next, the operation of the disk device 100 according to the first embodiment will be described with reference to the drawings. FIG. 8 is a flowchart showing the operation of the disk device.

First, power is supplied to the disk device 100 by turning on the electric device. As shown in FIG. 7, the control circuit unit which starts the operation by the supply of the electric power determines whether or not there is an initialization process for recognizing the position of the pickup 242 which is a regular drive of the pickup 242 (step S101). . This determination may be made, for example, based on the presence or absence of the flag information indicating that the initialization processing generated when the internal counter is set by the position recognition means is performed. Then, since the power has just been supplied, the position has not been normalized in step S101, and therefore the position recognition means of the control circuit starts normalization, that is, performs an initialization process (step S102). Specifically, for example, the position recognizing means transmits the initialization processing to the drive control means. Outputs a signal to request execution.

[0036] Then, upon recognizing the execution request of the initialization processing, the drive control unit determines the number of pulses required to move the information processing unit 240 toward the outermost peripheral position A at the entire distance in the movable range W. A driving pulse of a predetermined driving frequency is supplied with the same pulse number as that of the above. When the position control unit recognizes that the movement of the information processing unit 240 has been completed by the drive control unit, the information processing unit 240 comes into contact with the step portion 212 located on the outer peripheral side of the optical disk 10 and the pickup 242 is moved to the end. It is determined that it is located at the outer peripheral position A, and an internal counter is set to a value of CTout indicating the outermost position A (step S103). Further, the position recognition means generates flag information indicating that the initialization processing has been completed. After that, when recognizing the flag information generated by the position recognizing means, the control circuit unit performs a process of moving the pickup 242 to a reference position where the internal counter becomes “0” (step S104). The reference position at which the internal counter is “0” is, for example, a position where the light emitted from the pickup 242 is focused on the boundary position between the lead-in area and the program area (PA) shown in FIG. Then, a process of moving the information processing section 240 to a state where the pickup 242 is located is performed.

Thereafter, the control circuit unit determines whether or not the optical disc 10 is loaded (Step S105). That is, for example, the control circuit unit detects the optical disk 10 by a disk detection unit such as a sensor or a switch (not shown) provided separately, or detects the optical disk 10 based on the presence or absence of the emitted light reflected by controlling the pickup 242. Then, the presence or absence of the optical disk 10 is determined.

In step S101, when the control circuit recognizes the flag information generated by the position recognizing means and recognizes that the initialization processing has already been completed, for example, the internal counter indicates “ The pickup 242 is moved to the reference position at which the value becomes "0" (step S106), and the process proceeds to step S105.

When it is determined in step S105 that the optical disk 10 is not mounted, the position setting means of the control circuit unit sets the optical disk 10 in a standby state for inserting the optical disk 10 to the standby position where the pickup 242 is located at the innermost position B. Processing for moving the processing unit 240 is performed. That is, the position setting means obtains the CTin value indicating that the internal counter is at the innermost peripheral position B. The drive control means controls the drive control means to supply the drive electric motor 232 with the drive pulse of the drive frequency with the number of pulses corresponding to the state (step S107).

Thereafter, the control circuit unit recognizes the presence or absence of a request signal to insert the optical disk 10, for example, an operation of an eject button or a request signal to advance the tray unit 120 output from an electric device card (step). S108). Then, in this step S108, if there is no request for inserting the optical disk 10 for a predetermined time or more, the processing is terminated, and processing such as maintaining the standby state or turning off the power is performed.

On the other hand, when recognizing the insertion request of the optical disk 10 in step S108, a process for causing the tray unit 120 to advance is performed (step S109). Specifically, the urging release means 132 of the transport means 130 is operated to release the state of engagement with the engaging and disengaging claws 123 of the tray section 120. Thus, the tray portion 120 also advances the opening force of the case body 110 by the urging force of the urging means. Then, when the user retreats the tray unit 120 against the urging force of the urging means, the control circuit unit detects the presence or absence of the optical disk 10 (step S110). For example, a sensor or a switch disposed in the tray unit 120 or the case body 110 detects that the tray unit 120 is retracted into the case body 110. Then, the information processing unit 240 is moved to a state where the internal counter is at the position of “0” with the pickup 242, and the presence or absence of the outgoing light reflected from the optical disk 10 is detected as described above, or the optical disk 10 provided separately is detected. The presence or absence of the optical disk 10 is determined by, for example, recognizing a detection signal from a sensor that performs the detection.

When it is determined in step S110 that the optical disk 10 is not loaded, as described above, the state where the pickup 242 is located at the innermost position B, specifically, the internal counter is set to a value corresponding to CTin Then, the information processing section 240 is moved by the drive control means to the state (step S111), and the processing is ended as described above. For example, when the presence or absence of the optical disk 10 is determined by using a separately provided sensor without moving the pickup 242, step S111 may not be performed.

On the other hand, if it is determined in step S110 that the optical disk 10 is loaded, the process proceeds to step S101 to continue the processing. When the process returns to step S101, the initialization process is already completed, for example, the flag information is recognized, so that the process proceeds to step S106. As described above, the presence / absence of the optical disk 10 is determined by the internal counter of the pickup 242. In the case where processing is performed by moving to the state of “0”, since the internal counter has already become “0”! /, The processing of step S106 may be omitted! /.

In step S105, when it is determined that the optical disk 10 is loaded, it is determined whether there is a request to perform information processing such as reading processing or recording processing for reproducing recorded information. (Step S112). In step S112, when there is no request to execute the information processing, that is, in the standby state of the information processing, the position setting means of the control circuit unit sets the processing standby state of the optical disk 10 to move the pickup 242 to the innermost position as described above. A process is performed to move the information processing section 240 to the standby position located at B (step S113).

After that, the control circuit unit issues a request to eject the optical disc 10 mounted, for example, for exchanging the optical disc 10, for example, operation of an eject button or the like, and advance of the tray unit 120 output from an electric device. The presence / absence of a request signal to the effect is recognized (step S114). If it is determined in step S114 that the optical disk 10 has not been ejected for a predetermined time or more, the process is terminated, and for example, if the standby state is maintained, the power is turned off.

When it is determined in step S 114 that there is a request to eject the optical disk 10, as described above, the process of moving the tray unit 120 out of the case body 110 is performed (step S 115). Thereafter, when the user retreats the tray section 120 against the urging force of the urging means, the control circuit detects the presence or absence of the optical disk 10 as described above (step S116). If it is determined in this step S116 that the optical disc 10 is not loaded, as described above, the state in which the pickup 242 is located at the innermost position B, specifically, the state in which the internal counter has a value corresponding to CTin Then, the information processing section 240 is moved by the drive control means (step S117), and the processing is terminated as described above. In this case, similarly, step S117 may not be performed by the method of detecting the optical disk 10. If it is recognized in step S116 that the optical disk 10 has been mounted, the process proceeds to step S112 to continue the process.

On the other hand, in step S112, when the control circuit unit determines that there is a request to execute information processing, the control circuit unit appropriately operates the electric motor 221 for rotation, the electric motor 232 for movement, and the pickup 242 (step S118). ), For example, read processing for reproducing recorded information or information processing for recording processing is performed (step S119). Information about step S119 During the execution of the information processing, it is determined whether there is a processing request to stop the rotation of the optical disc 10 such as a request to stop the information processing, such as a request to advance the tray unit 120 (step S120). Then, in step S120, when it is determined that there is no processing request for the rotation stop, the process returns to step S119 and the execution of the information processing is continued.

Further, in step S 120, when recognizing that there has been a processing request to stop the rotation of the optical disc 10, the control circuit unit stops the operations of the electric motor for rotation 221, the electric motor for movement 232, and the pickup 242. Then, the rotation of the optical disk 10 is stopped (Step S12 Do). Then, the control circuit unit sets the pickup 242 at the innermost peripheral position B as described above, as a standby state for the next operation by the processing for stopping the information processing. The information processing section 240 is moved by the drive control means to a state, specifically, a state where the internal counter becomes a value corresponding to CTin (step S122), and the process proceeds to step S114 to continue the processing.

As described above, after the initialization processing, the information processing, and the presence / absence detection of the optical disk 10, when the standby state of the next processing is established, the information processing unit 240 sets the standby state where the pickup 242 is located at the innermost position B. Moved to position. Therefore, when the initialization process is performed again, the information processing unit 240 is moved from the innermost position B to the outermost position A, and the information processing unit 240 comes into contact with the step 212 and the force is excessively increased. No drive noise is supplied. As a result, the excessively supplied drive pulse causes the movement restricting claw portion 241B of the information processing section 240 to generate large noise due to so-called tooth skipping in which the force of the engaging groove 232B of the lead screw 232A is released, and the movement restriction is prevented. When the claw portion 241B engages with the engagement groove 232B, the rotation of the lead screw 232A is regulated and the electric motor for movement 232 cannot be rotationally driven. The generation of abnormal noise due to vibration is prevented.

(Operation and Effect of First Embodiment)

As described above, in the above embodiment, the position recognition unit controls the electric motor 232 for movement so that the information processing unit 240 is moved in the entire movable range W, and the information processing unit 240 Completion of initialization processing that is set as the outermost peripheral position A, which is the end position in the movement direction when moving within W, or execution of information processing that is at least one of reading processing and recording processing Completion of position setting means Then, the electric motor 232 for movement is controlled so that the information processing section 240 is moved to the innermost peripheral position B opposite to the outermost peripheral position A recognized at the time of the initialization processing. For this reason, in a standby state until the next processing after the initialization processing or the information processing is completed, the information processing section 240 is located at the innermost peripheral position B which is the home position, for example, when the optical disk 10 is replaced or the power supply is turned off. When performing the initialization process again by re-insertion, etc., when the information processing unit 240 is moved in the entire movable range W and is brought into contact with the outermost peripheral position A, the innermost peripheral position of the home position B The drive pulse is not supplied excessively when it is moved to the outermost position A. Therefore, due to the excessively supplied drive pulse, for example, the movement regulating claw portion 241B of the information processing section 240 is disengaged from the engagement groove 232B of the lead screw 232A, and a loud noise is generated due to so-called tooth skipping. Engagement with the engagement groove 232B restricts the rotation of the lead screw 232A and makes it impossible to rotate the electric motor 232 for rotation. Generation of sound can be prevented. Therefore, good silencing can be obtained, and damage or shortening of life due to a load applied to the moving electric motor 232 or the engaging portion due to an excessively supplied drive pulse can be prevented, and good information processing can be performed. can get.

By supplying a drive pulse that is several pulses larger than the drive pulse required to move the movable range W, the information processing unit 240 can be reliably connected to the outer peripheral side of the optical disc 10 even if there is an error such as a component tolerance. Can be reliably brought into contact with the step portion 212 corresponding to the outermost position A, which is a predetermined end position. Therefore, the position of the pickup 242 can be surely recognized, and appropriate information processing can be easily obtained. In addition, in the case of supplying a few pulses more in anticipation of errors, etc., by supplying a drive pulse with a microstepping drive frequency, pulsation-like vibration during step-out can be significantly reduced, Good noise reduction can be achieved. Further, a stepping motor is used as the electric motor for movement 232, so that the stepping motor is stepped out when it comes into contact with the stepped part 212. For this reason, microphone opening step control becomes easy, and when driving pulses are supplied by about several pulses, vibration at the time of step-out is greatly reduced, so that noise reduction and load reduction in each part can be easily obtained. Further, since the initialization process is performed when the power is turned on, there is no need to initialize even if the optical disk 10 is replaced in a later step. In other words, by performing the process of moving to the innermost position B of the home position in the process standby state, by executing this process, it is possible to reduce noise in the next initialization process and reduce the load on each part. At the same time, the processing time for the initialization processing can be eliminated, the time until the start of the next information processing can be reduced, and good information processing can be easily obtained.

Further, the flag information is generated when the initialization process is completed. Therefore, a configuration in which the initialization process is not performed after the exchange of the optical disk 10 described above can be easily obtained by a simple process. Therefore, the control circuit configuration can be simplified, the manufacturability can be improved, the cost can be reduced, and further, the size and weight can be reduced.

The information processing section 240 is moved to the innermost position B of the home position every time the tray section 120 is in the advanced state or the retracted state, such as when the optical disk 10 is replaced. For this reason, when the tray unit 120 is in the retreating state and the force is initialized, the information processing unit 240 is already at the home position. Is surely obtained. Furthermore, a configuration that can detect the presence or absence of the optical disk 10 by controlling the pickup 242 when moving to the home position can be easily obtained, eliminating the need to separately provide a sensor or a switch for detecting the presence or absence of the optical disk 10. The structure can be easily simplified.

Further, the innermost position B is set as the home position. For this reason, for example, a lead-in area for recognizing contents related to recorded information such as TOC (Table Of Contents) information when the optical disk 10 is a CD—DA (Compact Disk-Digital Audio).

(Lead-in Area) is mostly recorded on the inner side of the optical disk 10. Therefore, in order to perform information processing from the standby state or to detect the presence or absence of the optical disk 10, the lead-in area and the program area ( The process of moving the information processing unit 240 to a position where the internal counter that focuses on the boundary position with the PA (Program Area) becomes “0” need only move a small distance. Therefore, the time required for information processing and the process of moving the internal counter to “0” is reduced, and quick processing is easily obtained. The present invention is applied to a disk device 100 using an optical disk 10 as a disk-shaped recording medium. Therefore, the present invention can be easily applied particularly to the initialization processing of the pickup 242 which reciprocates in one direction, and is particularly effective in a configuration in which the pickup 242 reciprocates in the negative direction to perform information processing.

[Second Embodiment]

Next, a second embodiment of the present invention will be described with reference to the drawings. In the present embodiment, a force that exemplifies and describes a so-called slot-in type disk device will be described. In the same manner as in the above-described first embodiment, any type of disk device that targets any recording medium will be described. can do.

(Configuration of Disk Device)

FIG. 9 is a partially cutaway plan view showing a schematic configuration of the disk device according to the second embodiment. 10A and 10B are explanatory views for explaining the rotating state of the disk processing unit of the disk device. FIG. 10A is a conceptual diagram of the state where the optical disk is located at the loading completion position, and FIG. It is a conceptual diagram of a state. Note that the same components as those of the first embodiment are denoted by the same reference numerals, and description thereof will be omitted or simplified.

In FIG. 9, reference numeral 500 denotes a disk device. The disk device 500 is a thin slot-in type information processing and recording device that reads various information recorded on a recording surface 10 A of an optical disk 10 as a disk-shaped recording medium. To record various information. The disk device 500 has, for example, a substantially box-shaped case body 110 made of metal and having an internal space. The case body 110 is provided with a decorative plate 111 formed on one side surface thereof in an elongated plate shape using, for example, a synthetic resin. The decorative plate 111 has an opening (not shown) provided in a slit shape along the longitudinal direction. In the case body 110, a disk processing unit 200 called a traverse mechanism, a driving unit 600 for moving the disk processing unit 200, a transport unit 700 for transporting the optical disk 10, and a disk device 500 And a control circuit unit (not shown) as arithmetic means for controlling the operation of the control unit.

As in the first embodiment, the disk processing unit 200 attaches a disk rotating drive to the base 210. A moving unit 220, a processing moving unit 230 as a driving unit, an information processing unit 240, and a cover (not shown) are provided. The disc processing unit 200 is configured to rotate the other end of the pedestal unit 210 such that the one end of the pedestal unit 210 in the longitudinal direction on which the turntable 222 is provided is rotatable in a direction substantially along the axial direction of the rotation shaft 222A. The end side is pivotally supported by the case body 110 and is disposed inside the case body 110!

As shown in FIG. 9, the drive unit 600 includes a motor (not shown) disposed in the case body 110 and operation-controlled by, for example, a control circuit unit, and a moving cam 610 moved by driving the motor. , Is provided. The moving cam 610 engages with an engaging claw 213 projecting outward from the pedestal portion 210 and also engages with the motor, and is moved by driving the motor to rotate the pedestal portion 210. The rotation of the pedestal part 210 is a state in which the rotating shaft 222A of the turntable 222 advances and retreats on the movement path on which the optical disc 10 is transported by the transport means 700. More specifically, the advance position shown in FIG. 10A in which the rotation axis 222A of the turntable 222 advances on the movement path of the optical disk 10 and the force on the movement path of the optical disk 10 Rotate between the retracted position and the retracted position shown in FIG. 10B in the retracted state. 10A and 10B may be in the state of waiting for insertion of the optical disk 10. If the insertion standby state is as shown in FIG. 10A, the insertion of the optical disk 10 may be detected by a separately provided sensor or the like, and may be moved to the retracted position shown in FIG. 10B. .

As shown in FIG. 9, the transport means 700 is provided with a transport motor (not shown) provided in the case body 110 and controlled by, for example, a control circuit unit, and a link (not shown) that is linked by driving the transport motor. It has a mechanism section and a detection switch 720 as carry-in detection means. The link mechanism section includes a detection arm 731, an interlocking arm 732, and a carry-in arm (not shown). The detection arm 731, the interlocking arm 732, and the carry-in arm are formed in an elongated plate shape, for example, by a metal plate or the like, and one end in the longitudinal direction is rotatably supported by the case body 110. Then, the detection arm 731 and the interlocking arm 732 are connected to each other by pivotally supporting an intermediate portion in the longitudinal direction so as to be rotatable with each other, and the interlocking arm 732 rotates with the rotation of the detection arm 731. In addition, the loading arm is disposed so that the other end thereof is rotatable inward near the opening of the case body 110, and the other end is in contact with the peripheral edge of the optical disc 10. Then, the optical disk 10 is loaded. A pulley (not shown) is rotatably supported in the vicinity of the tip of the detection arm 731 and the carry-in arm on the rotation side in such a manner that a substantially central portion in the axial direction is formed to have a small diameter, and a peripheral surface of the optical disc 10 abuts on the peripheral surface. Have been. When a relatively strong force is applied, the detection arm 731 and the carry-in arm can be pushed outward and moved outward. Specifically, when the optical disc 10 is pushed into the opening, the optical disc is moved. It is rotatable so as to be pushed outward by the peripheral surface of the buckle 10. Then, when the disk processing unit 200 is located at the retracted position shown in FIG. 10B, the link mechanism is in a state where the distal end side of the detection arm 731 is rotated toward the opening.

The detection switch 720 is provided on the case body 110 and turns on and off according to the rotation state of the interlocking arm 732. More specifically, the detection arm 731 at the loading completion position where the optical disc 10 is processed by the pickup 242 is turned off near the standby position (see FIG. 9), and the detection arm 731 is turned off at other times. It is in a state where it is turned on when it is moved. Then, the on / off signal of the detection switch 720 is output to the control circuit unit.

As in the first embodiment, the control circuit section is configured as a circuit on a circuit board on which various electric components are mounted, for example, and controls the operation of the entire disk device 500. Then, similarly to the first embodiment, the control circuit unit includes, for example, a control unit as a drive control device including a drive control unit, a position recognition unit, a position setting unit, and the like as a program. It has.

The position recognizing means performs an initialization process for recognizing the position of the pickup 242, as in the first embodiment. Note that the position recognizing means according to the second embodiment sets the direction in which the pickup 242 is moved by the supply of the driving pulse during the initialization processing, that is, the direction opposite to that of the first embodiment, that is, the position of the optical disk 10. A drive pulse is supplied to the electric motor 232 for movement in a direction of moving to the innermost peripheral position B corresponding to the inner periphery, with a waveform in this direction. When the position recognizing unit recognizes the completion of the drive control of the electric motor for movement 232 by the drive control unit in the initialization process, the position recognizing unit changes the position of the pickup 242 to the end position in the moving direction during the movement within the movable range W. Is recognized as the innermost position B. Thereafter, the position recognizing means sets an internal counter (not shown) corresponding to the position of the pickup 242 to a value of CTin indicating the outermost position A. The position setting means controls the information processing unit 240 to move to the standby position by recognizing the standby state, as in the first embodiment. It should be noted that the position setting means in the second embodiment is configured such that, in the initialization processing by the position recognizing means, the information processing section 240 is moved and brought into contact with the step section 212 as the innermost peripheral position B. Is the outermost peripheral position A corresponding to the outer peripheral side of the optical disk 10 on the opposite side. Then, the position setting means outputs to the drive control means a signal indicating that the pickup 242 is moved to the outermost peripheral position A, which is the standby position, and the execution of the standby processing for setting the apparatus to the standby state is started. . The control by the drive control means in this standby processing is such that the initialization processing has already been completed and the position of the pickup 242 and the value of the internal counter are in agreement, so that the internal counter is at the outermost peripheral position A. The drive control means controls the drive control means to supply the drive electric motor 232 with the drive pulse of the drive frequency at the number of pulses corresponding to the state of CTout.

(Operation of Disk Unit)

Next, the operation of the disk device 500 according to the second embodiment will be described with reference to the drawings.

First, power is supplied to the disk device 500 by turning on the electric device. By the supply of the electric power, the control circuit recognizes the rotating state of the disk processing unit 200 based on the ON / OFF state of the detection switch. Specifically, when the detection switch is turned off, the detection arm 731 of the link mechanism is determined to be at the standby position, the disk processing unit 200 determines that the advance position shown in FIG. Judge as inserted. On the other hand, if the detection switch is on, it is determined that the tip of the detection arm 731 is rotating toward the opening, and the disk processing unit 200 determines that it is in the retracted position shown in FIG. It is determined that the optical disc 10 in which the disc 10 is not loaded is in the insertion standby state. Then, the control circuit outputs a signal regarding whether or not the optical disk 10 is inserted to a circuit for controlling the operation of the electric device.

Then, when the optical disc 10 is inserted through the opening in the insertion standby state of the optical disc 10, the peripheral edge of the optical disc 10 comes into contact with the pulley of the detection arm 731. In this state, when the optical disk 10 is further pushed in, the detection arm 731 and the carry-in arm stake out and rotate outward. It is pushed out to be moved. When the optical disk 10 is pushed in to a certain extent, the loading arm moves over the periphery of the optical disk 10, and the urging force acts again on the state in which the loading arm rotates inward. It is carried to the location.

Further, when the optical disk 10 is carried in before the carrying-in completion position shown in FIG. 9, the detection switch 720 is turned off. When the control circuit recognizes that the detection switch 720 is turned off, the control circuit drives the motor of the driving unit 600 to move the moving cam 610 to rotate the disk processing unit 200 to the advanced position shown in FIG. Start. Then, when the optical disc 10 is carried in to the carry-in completion position shown in FIG. 9, the detection arm 731 becomes the standby position, and the movement of the optical disc 10 is restricted. When the optical disc 10 is located at this position, as shown in FIG. 10A, the rotating shaft 222A of the turntable 222 of the disc processing unit 200 rotates and the shaft hole is opened at substantially the center of the optical disc 10. The optical disk 10 is pivotally supported by the turntable 222.

Further, the control circuit unit determines that the optical disc 10 has been carried in to the carry-in completion position and the disc processing unit 200 has reached the advance position shown in FIG. 10A by turning off the detection switch 720, and the initialization means Perform initialization processing. Specifically, when it is determined that the power is turned on and the disk processing unit 200 has reached the advanced position shown in FIG. 10A, it is determined that the initialization processing is required. Then, since the initialization means is an initialization process immediately after rotating the disk processing unit 200 to the advanced position, the pickup 242 is moved to the outermost peripheral position A as shown in FIG. 6 in the first embodiment. Judge that it is located. With this, the initialization means determines that the number of pickups 242 is equal to or slightly larger than the number necessary for moving the entire range of the movable range W to the turntable 222 side which is the inner peripheral side of the optical disc 10! The drive control unit performs a process of supplying the drive electric motor 232 with drive pulses having the same number of drive frequencies.

When a driving pulse having a driving frequency is supplied, the pickup 242 comes into contact with the step 212 on the rotation base end side of the disk processing unit 200 which is the outermost side of the optical disk 10 on the opposite side of the moving direction. At the position of the outermost peripheral position A, the pickup 242 is moved toward the step portion 212 on the turntable 222 side, and is brought into contact with the last drive pulse, or Then, several pulses are supplied. When the position control unit recognizes that the movement of the information processing unit 240 has been completed by the drive control unit, the information processing unit 240 comes into contact with the step portion 212 located on the inner peripheral side of the optical disk 10 and the pickup 242. Is determined to be at the innermost peripheral position B, and the internal counter is set to the value of CTin to indicate that it is the innermost peripheral position B. Thereafter, as in the first embodiment, the processing is appropriately performed, and in the standby state of the next processing, the position setting means moves the information processing unit 240 to the standby position where the pickup 242 is located at the outermost peripheral position A. Perform the processing to be performed.

(Operation and Effect of Second Embodiment)

As described above, in the above embodiment, the position recognition unit controls the electric motor 232 for movement so that the information processing unit 240 is moved in the entire movable range W, and the information processing unit 240 Completion of the initialization processing that is set to be located at the innermost peripheral position B which is the end position in the movement direction when moving within W, or information processing of at least one of the reading processing and the recording processing When the position setting unit recognizes the completion of the execution, the electric motor 232 for movement is controlled to move the information processing unit 240 to the outermost position A opposite to the innermost position B recognized at the time of the initialization processing. Let it. Therefore, as in the first embodiment, the information processing unit 240 is in a state of being located at the outermost peripheral position A, which is the home position, in a standby state after the completion of the initialization processing or the information processing until the next processing. For example, when the information processing unit 240 is moved over the entire movable range W and is brought into contact with the innermost peripheral position B when the initialization processing is performed again by replacing the optical disk 10 or turning on the power again, for example. Since the outermost position A of the home position is moved, the drive pulse is not supplied excessively when the position is moved to the innermost position B. Therefore, the drive pulse supplied excessively can prevent generation of a loud noise due to so-called tooth skipping and generation of a noise due to a so-called pulsating flow-like vibration at the time of step-out. Therefore, good noise reduction can be obtained, and damage and shortening of life due to a load on the moving electric motor 232 and the engaging portion due to an excessively supplied drive pulse can be prevented, and good information processing can be obtained. .

Further, in addition to the operation and effect of the first embodiment, the information processing unit 240 is located at the outermost peripheral position A because the disk processing unit 200 such as a slot-in type is rotatable and is particularly thin. In the moving configuration, the position setting means moves the information processing section 240 with the outermost peripheral position A as a standby position. For this reason, the position for rotation and the standby position are the same, so that the processing steps can be simplified rather than having to move the information processing unit 240 when rotating, and quick processing can be easily obtained. Can be

[Modification of Embodiment]

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

That is, although the disk devices 100 and 500 using the disk-shaped recording medium have been illustrated, as described above, not only the disk-shaped recording medium but also any recording medium such as a cylindrical recording medium may be used. it can. Further, the present invention can be applied to a configuration in which only one of the reading process and the recording process is performed. Further, the present invention is not limited to a so-called slim drive as in the first embodiment and a so-called slot-in type as in the second embodiment, but can be applied to a configuration having a tray. Also, in the slot-in type, any configuration such as a configuration in which a roller is used as the transfer means 700 and the like can be applied. Furthermore, the present invention is not limited to the configuration incorporated in the electric device, and may be configured as a single unit. Further, the program may be distributed as an initialization device that is a circuit board mounted in the disk device 100, a program for performing the above-described operation, or a recording medium on which the program is recorded.

The configuration for moving the information processing section 240 provided with the pickup 242 is not limited to a stepping motor, but may be any motor.

When the pickup 242 is at the standby position, the pickup 242 is moved out of synchronization at the innermost position B on the opposite side. When the pickup 242 is at the standby position on the inner side, the pickup 242 is moved to the opposite position. The moving direction may be appropriately reversed so as to move out of step at the outermost peripheral position A, and the force may be moved to only one of the described forces. The step-out at the innermost peripheral position B is not limited to after the rotation of the disk processing unit 200, but may be performed when the standby position is on the outer peripheral side, for example, when the read-in area of the recording medium is on the outer peripheral side. Is

. Then, in the configuration in which the step-out is performed by moving only to one side, the step portion 212 may be provided only on this one side. The configuration for restricting the movement of the pickup 242 is not limited to the configuration using the stepped portion 212 that supports the guide shaft of the pedestal 210, but, for example, a large diameter near the end of the guide shaft. Any configuration can be used, such as providing a bulging portion to restrict movement. The use of the step portion 212 facilitates simplification of the configuration without the necessity of separately providing a configuration for restricting movement, and facilitates improvement in manufacturability and further downsizing.

[0080] Although the drive control means, the position recognition means, and the position setting means have been described as being configured as programs in the control circuit section, they may be, for example, circuits or circuit elements constituting the respective components. In addition, since the program configuration is used, it can be easily applied to a conventional disk device configuration by a simple method of mounting a program, and the manufacturability and versatility can be easily improved. As described above, by adopting a configuration in which the program is recorded on the recording medium, the handling of the program is facilitated, and the use can be easily expanded. Further, the control circuit section is not limited to the configuration including the drive control unit, the position recognition unit, and the position setting unit, but may be configured to include any other unit such as a time measurement unit. Good.

[0081] In the initialization processing, the step-out has been described, but the present invention is not limited to this. That is, as a configuration for moving the information processing unit 240, a force configured to rotate the lead screw 232A with which the movement restricting claw 241B of the information processing unit 240 is engaged, for example, by using an endless belt or the like, Either of the configurations, such as a configuration in which the information processing unit 240 is moved, and a configuration in which the information processing unit 240 is moved in each configuration can be applied by microstep control.

In the first embodiment, the optical disc 10 is loaded after the tray section 120 is advanced in response to a request to advance the tray section 120 for loading or unloading of the optical disc 10 or the like. If it is recognized that the initialization process has already been executed, the force described in the process of proceeding to step S106 is applied, for example, a switch or sensor for detecting that the tray unit 120 is at the retracted position, or the attachment of the transport unit 130. When the tray unit 120 recognizes that the advance state force is also in the retreat state by a sensor or a switch that detects the operation state of the force release unit 132, the flag information indicating that the initialization processing is completed is deleted, First The initialization process may be executed again, for example, by outputting a signal requesting the execution of the initialization process. With such a configuration, even if an impact occurs when the tray unit 120 moves forward or backward or a user accidentally contacts and moves the information processing unit 240, the information processing can be appropriately performed by executing the initialization process. . Furthermore, since the initialization process is performed each time the optical disk 10 is mounted, appropriate information processing can be performed in response to the above-mentioned external impact or contact.

Further, in the second embodiment, the standby position is described as the outermost peripheral position A. However, in the case of the next information processing standby, the innermost peripheral position B is set as the standby position and the standby position is set. May be changed according to the processing content. Further, similarly to the first embodiment, the innermost peripheral position B is set as the standby position, and when the disk processing unit 200 rotates, the innermost peripheral position B is moved to the outermost peripheral position A, which is the standby position, and A process of rotating may be performed.

Then, according to the second embodiment, as the configuration for rotating the disk processing unit 200, the force described in the configuration in which the moving cam 610 moves by driving the motor, for example, the rotation of the detection arm 731 In this case, the moving cam 610 is rotated by the movement of the moving cam 610, so that the V and shift configurations can be used. Further, the configuration is not limited to the configuration in which the disk processing unit 200 is rotated, but may be any configuration in which the rotation shaft 222A of the turntable 222 can advance and retreat on the movement path of the optical disk 10, for example, by sliding as a whole. Furthermore, although the configuration has been described in which the optical disk 10 starts rotating immediately before the loading completion position, the rotation may be started after the optical disk 10 is positioned at the loading completion position. Note that the force immediately before the loading completion position also starts to rotate, and since the rotation shaft 222A is inserted into the shaft hole at the loading completion position, the operation proceeds in parallel. Time is shortened and usability can be improved.

Further, according to the second embodiment, the disk processing unit 200 has been described as being in the retracted position shown in FIG. 10B in the insertion standby state of the optical disk 10, but as described above, even in the insertion standby state, FIG. The advance position shown in FIG. In the case of this configuration, even if the pickup 242 is moved at the advanced position, the pickup 242 does not come into contact with the case body 110, so that the initialization process may be performed when power is supplied. According to this configuration, the time required for the optical disc 10 to be inserted and subjected to the force initialization processing can be eliminated, the time until the information reading processing and the recording processing can be shortened, the usability can be improved, and, for example, the impact due to external force or the like can be improved. Pick Atsu Problems such as damage due to the movement of the step 242 and collision with the case body 110 can be prevented, so that miniaturization can be easily achieved. As described above, the initialization process can be performed at any time, such as when the power is turned on, when the optical disk 10 is inserted, or at predetermined time intervals.

[0086] In addition, specific structures and procedures for implementing the present invention can be appropriately changed to other structures and the like as long as the object of the present invention can be achieved.

[Effects of Embodiment]

As described above, when the information processing unit 240 is moved within the movable range W by controlling the moving electric motor 232 so that the information processing unit 240 is moved in the entire movable range W by the position recognition unit. When the position setting unit recognizes the completion of the initialization processing for setting the end position in the moving direction of the image forming apparatus or the completion of the information processing which is at least one of the reading processing and the recording processing, the information processing is performed. The electric motor 232 for movement is controlled so that the unit 240 is moved to the end position opposite to the end position recognized at the time of the initialization processing. For this reason, the information processing section 240 is located at the end position serving as the home position in a standby state until the next processing after the completion of the initialization processing or the information processing. For example, the optical disk 10 is replaced or the power is turned on again. If the information processing unit 240 is moved over the entire movable range W and is brought into contact with the end position opposite to the standby position when the initialization process is performed again due to, for example, the end position is moved. In this case, excessive drive pulses are not supplied, and the excessively supplied drive pulses prevent abnormal noise from being generated, thereby effectively reducing noise, and also preventing damage due to load and shortening of service life. Good information processing can be obtained.

Industrial applicability

The present invention recognizes the position of an information processing unit that performs at least one of a reading process for reading information recorded on a recording surface of a recording medium and a recording process for recording the information on the recording surface. The present invention can be used for a drive control device, its method, its program, a recording medium on which the program is recorded, and an information processing device.

Claims

The scope of the claims

[1] The movable range is restricted by the restricting means, the driving means drives the driving means to move within the movable range, reads the information recorded on the recording surface of the recording medium, and reads the information on the recording surface. A drive control device for controlling a movement state of an information processing unit that performs at least one of a recording process of recording

The information processing unit controls the driving unit to drive the entire area of the movable range within a time period in which the information processing unit can substantially move, and the position of the information processing unit moved by driving the driving unit is set within the movable range. Position recognizing means for recognizing an end position in the moved direction in

When the position recognizing unit controls the driving unit and recognizes the completion of the process of moving the information processing unit to the end position, the driving unit controls the driving of the driving unit so that the position opposite to the recognized end position is controlled. Position setting means for performing a process of moving the information processing unit to a standby position which is an end position of

A drive control device comprising:

[2] The drive control device according to claim 1,

The position recognizing means controls the driving means by microstepping.

A drive control device characterized in that:

[3] The drive control device according to claim 2,

The position recognizing means performs a process of supplying a driving pulse having a microstep operating frequency to the driving means with the number of pulses necessary for the information processing section to move in the entire movable range.

A drive control device characterized in that:

[4] The drive control device according to any one of claims 1 and 3,

When recognizing that at least one of the reading process and the recording process has been completed, the position setting unit moves to an end position recognized by the position recognizing unit and the standby position. The drive of the drive unit is controlled by the drive control unit in a state where the information processing unit is moved.

A drive control device characterized in that:

[5] The information processing unit that performs at least one of a reading process of reading information recorded on the recording surface of the recording medium and a recording process of recording the information on the recording surface is regulated by the regulation unit. Controlling the driving means for moving the information processing unit in a time period in which the information processing unit can be moved substantially in the entire movable range, and moves the position of the information processing unit within the movable range to the end position in the moving direction during the movement. A drive control device for causing the position recognition means to recognize

When the position recognition unit recognizes the position of the information processing unit, and recognizes at least one of the completions of the execution of at least one of the reading process and the recording process, Position setting means for controlling the driving of the driving means and moving the information processing section to a standby position which is an end position opposite to the end position recognized by the position recognition means.

A drive control device characterized in that:

[6] The drive control device according to any one of claims 1 and 5, further comprising:

The position recognizing means executes processing for recognizing the position of the information processing unit when recognizing that the removably mounted recording medium is mounted.

A drive control device characterized in that:

[7] The drive control device according to any one of claims 1 and 6, further comprising:

Upon recognizing that the detachably mounted recording medium is mounted, the position setting unit controls the driving of the driving unit to move the information processing unit to the standby position.

A drive control device characterized in that:

[8] The drive control device according to any one of claims 1 and 7,

The recording medium is a disk-shaped recording medium having a lead-in area for the information, which is located on an inner peripheral side of the recording surface provided on at least one surface,

The position recognizing unit controls the information processing unit to drive the driving unit in a direction corresponding to an outer peripheral side of the recording medium for a substantially movable time in the entire movable range, and controls the driving of the information processing unit. Recognize the position as the outermost position,

The position setting unit is configured to set the information processing unit to correspond to an inner peripheral side of the recording medium. The driving of the driving means is controlled so as to be located at the innermost peripheral position within the movable range.

A drive control device characterized in that:

[9] The drive control device according to any one of claims 1 and 8,

A recording medium mounting detection unit that recognizes the mounting of the recording medium,

The position setting means performs a process of moving the information processing unit to the standby position when the recording medium mounting detecting means recognizes the mounting of the recording medium.

A drive control device characterized in that:

[10] The drive control device according to any one of claims 1 to 9 and claim 9,

Power supply recognition means for recognizing power supply,

When the power supply recognition unit recognizes the power supply, the position setting unit performs a process of moving the information processing unit to the standby position.

A drive control device characterized in that:

[11] A reading process for reading information recorded on the recording surface of the recording medium by moving the movable range within the movable range by driving the driving unit by controlling the movable range by the regulating unit by the computing unit, and A drive control method for controlling a movement state of an information processing unit that performs at least one of a recording process of recording the information on a recording surface, wherein the calculation unit is configured to move the information processing unit in a movable range. Controlling the driving of the driving means for a substantially movable time in the entire area, and recognizing the position of the information processing unit as an end position in the movement direction during the movement within the movable range,

In a state in which the information processing unit is moved to the end position opposite to the recognized end position, the drive of the driving unit is controlled to make the opposite end position a standby position.

A drive control method characterized in that:

[12] The information processing unit that performs at least one of a reading process of reading information recorded on a recording surface of a recording medium and a recording process of recording the information on the recording surface by the arithmetic unit is defined as a regulating unit. Controlling the drive of the driving means for moving the information processing section in a time period in which the information processing section is substantially movable in the entire movable range regulated by A drive control method for causing the position recognizing means to recognize the position as an end position in the movement direction during the movement within the movable range,

The calculating means is configured to recognize the position of the information processing unit by the position recognizing means and / or to complete at least one of the reading processing and the recording processing. When either one of them is recognized, the drive of the driving unit is controlled to move the information processing unit to the end position opposite to the end position recognized by the position recognition unit, and the position of the opposite end position is controlled. Control to set the standby position

A drive control method characterized in that:

[13] A drive control program that causes an arithmetic unit to function as the drive control device according to any one of claims 1 to 10.

[14] A drive control program for causing an arithmetic means to execute the drive control method according to claim 11 or 12.

[15] A recording medium recording a drive control program, wherein the drive control program according to claim 13 or 14 is recorded so as to be readable by arithmetic means.

[16] an information processing unit that performs at least one of a reading process of reading information recorded on a recording surface of a recording medium and a recording process of recording the information on the recording surface,

Driving means for moving the information processing unit along the recording surface;

Regulating means for regulating a movable range of the information processing section moved by driving of the driving means;

The drive control device according to any one of claims 1 to 10, wherein the drive control device controls a movement state of the information processing unit.

An information processing apparatus comprising:

[17] The information processing apparatus according to claim 16, wherein

The information processing apparatus according to claim 1, wherein the driving unit includes a stepping motor.