JP2012243366A - Optical disk processor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the number of times of moving an optical pickup unit in an initial preparation operation performed when an optical disk is mounted in an optical disk processor.SOLUTION: The optical disk processor first moves an optical pickup unit so as to make a light irradiation position an inner circumference control information recording region to execute a first inner circumference physical adjustment value determination operation in an initial preparation operation (#1), and executes an inner circumference control information reading operation (#2), then, moves the optical pickup unit so as to make the light irradiation position an outer circumference control information recording region to execute an outer circumference information reading operation (#3), and executes an outer circumference physical adjustment value determination operation (#4). Then, the optical disk processor moves the optical pickup unit so as to make the light irradiation position an inner circumference control information recording region to execute a second inner circumference physical adjustment value determination operation (#5), and executes a third inner circumference physical adjustment value determination operation (#6).

Description

  The present invention relates to an optical disk processing apparatus that reads information recorded on an optical disk.

  2. Description of the Related Art Conventionally, there are optical disc processing apparatuses that record information on an optical disc and read information recorded on the optical disc. Such an optical disk processing apparatus records information on the optical disk by rotating the optical disk mounted on the spindle motor and irradiating the optical disk with light by an optical pickup unit to form a recording mark and a recording space on the optical disk. It is supposed to be. In addition, such an optical disk processing apparatus records light on an optical disk based on a light reception signal output from the optical pickup unit by irradiating the optical disk with light while rotating the optical disk mounted on the spindle motor. The read information is read.

  Such an optical disc processing apparatus reads control information recorded on the optical disc, records user record information on the optical disc based on the control information, and reads user record information recorded on the optical disc. It has become. The control information includes disc ID information for individually identifying the optical disc, disc physical information indicating the type of the optical disc, management information indicating an area where user recording information is recorded, and the like. The user record information is information such as video and audio used by the user.

  On the other hand, in such an optical disk processing apparatus, if the adjustment value when reading information recorded on the optical disk is not appropriate, the read quality of the information recorded on the optical disk becomes poor. The adjustment value when reading information recorded on the optical disc is the tilt of the objective lens of the optical pickup unit, the position of the aberration adjustment lens of the optical pickup unit, the condensing point of the light irradiated to the optical disc by the optical pickup unit. For example, the gain of a servo loop system for holding the position on the information recording layer of the optical disc and the information recording track of the optical disc.

  Appropriate values for adjustment values when reading information recorded on the optical disc are the positions on the optical disc (whether they are on the inner or outer circumference side, and if the optical disc is a multi-layer disc, how many layers Depending on whether the information recorded on the optical disk is read or not.

  Therefore, in such an optical disk processing apparatus, the optical pickup unit irradiates the optical disk with light and receives the reflected light, and the signal characteristics of the received light signal output from the optical pickup unit (modulation degree, jitter value, asymmetry, etc.) Based on the above, an adjustment value for reading information recorded on the optical disc is determined.

  Reading of control information recorded on these optical discs and determination of adjustment values when reading information recorded on the optical disc are performed as an initial preparation operation when the optical disc is mounted on the spindle motor. Yes.

  By the way, in such an optical disk processing apparatus, there is an optical disk that handles, for example, a BD-RE and records and reads information on the BD-RE. In the BD-RE, a predetermined area on the inner circumference side is assigned as an inner circumference control information recording area, a predetermined area on the outer circumference side is assigned as an outer circumference control information recording area, and an inner circumference control information recording area and an outer circumference control information recording area are recorded. An area between the areas is allocated as a user recording area. In the inner periphery control information recording area, disc ID information for individually identifying the optical disc and disc physical information indicating the type of the optical disc are recorded in advance as control information. User recording information is recorded in the user recording area. In the inner circumference control information recording area, management information indicating an area where user record information is recorded is recorded as control information in accordance with the record of the user record information. In the outer circumference control information recording area, when the management information cannot be recorded in the inner circumference control information recording area, the management information indicating the area in which the user record information is recorded is recorded in the user record information as the control information. Will be recorded accordingly.

  In an optical disk processing apparatus that handles BD-RE as a conventional optical disk, an initial preparation operation is performed as shown in FIG. First, the first inner circumference physical adjustment value determination operation is executed (# 91). The first inner circumference physical adjustment value determining operation is to irradiate the inner circumference control information recording area of the optical disc with the optical pickup unit and to receive the reflected light, and at this time, the received light signal output from the optical pickup unit This is an operation for determining an adjustment value when reading the information recorded on the optical disc based on the signal characteristic value. That is, when the optical disk is mounted on the spindle motor, the optical pickup unit is moved so that the light irradiation position is in the inner circumference control information recording area, and the first inner circumference physical adjustment value determination operation is executed.

  Subsequently, an inner circumference control information reading operation is executed (# 92). The inner circumference control information reading operation is an operation of reading control information recorded in the inner circumference control information recording area of the optical disc. That is, after the first inner circumference physical adjustment value determination operation is executed, the inner circumference control information reading operation is executed in a state where the light irradiation position on the optical disk by the optical pickup unit is the inner circumference control information recording area. To do.

  Subsequently, an outer periphery control information reading operation is executed (# 93). The outer periphery control information reading operation is an operation of reading control information recorded in the outer periphery control information recording area of the optical disc. That is, after executing the inner circumference control information reading operation, the optical pickup unit is moved so that the light irradiation position is in the outer circumference control information recording area, and the outer circumference control information reading operation is executed.

  Subsequently, a second inner circumference physical adjustment value determination operation is executed (# 94). The second inner circumference physical adjustment value determining operation is an operation performed when user recording information is recorded in the user recording area of the optical disc, and is an area on the inner circumference side of the user recording area of the optical disc by the optical pickup unit. Irradiates the light and receives the reflected light, and determines the adjustment value when reading the information recorded on the optical disk based on the signal characteristic value of the received light signal output from the optical pickup unit at that time It is. That is, after executing the outer periphery control information reading operation, the optical pickup unit is moved so that the light irradiation position is the inner periphery side area of the user recording area, and the second inner periphery physical adjustment value determining operation is performed. To do.

  Subsequently, an outer peripheral physical adjustment value determination operation is executed (# 95). The outer periphery physical adjustment value determining operation irradiates the outer periphery control information recording area of the optical disc with the optical pickup unit and receives the reflected light, and the signal characteristic value of the received light signal output from the optical pickup unit at that time This is an operation for determining an adjustment value when reading information recorded on the optical disk. That is, after executing the second inner circumference physical adjustment value determining operation, the optical pickup unit is moved so that the light irradiation position is in the outer periphery control information recording area, and the outer periphery physical adjustment value determining operation is executed.

  Subsequently, a third inner circumference physical adjustment value determination operation is executed (# 96). The third inner circumference physical adjustment value determining operation is an operation performed when the optical disc is a multi-layer disc, and the optical pickup unit irradiates light on the inner circumference side area of the second recording area of the optical disc. At the same time, the reflected light is received, and an adjustment value for reading information recorded on the optical disc is determined based on the signal characteristic value of the received light signal output from the optical pickup unit at that time. That is, after executing the outer peripheral physical adjustment value determining operation, the optical pickup unit is moved so that the light irradiation position becomes the inner peripheral region of the recording area of the second layer, and the third inner peripheral physical adjustment value Execute the decision operation.

  In an optical disk processing apparatus that handles BD-RE as a conventional optical disk, the initial preparation operation is performed in this way. The initial preparation operation is performed in this way in the development of the optical disk processing apparatus. First, the first inner circumference physical adjustment value determination operation, the inner circumference control information reading operation, and the outer circumference control information reading are performed. After developing what performs the operation, and then making improvements to improve the read quality of the information recorded on the optical disc, the second inner periphery physical adjustment value determination operation, the outer periphery physical adjustment value determination operation, This is because the third inner circumference physical adjustment value determination operation is added in order.

  On the other hand, a plurality of data to be reproduced is divided into the first half group and the second half group, all the data in the first half group is read while the head is moved in one direction, and in the second half group while the head is moved in the opposite direction. A reproducing apparatus is known in which the reading order of each data in the first half group and the second half group is determined so as to read all the data, and the data is reproduced in that order (see, for example, Patent Document 1). There is also known an optical disc apparatus in which reading is started from the reading area, and when the end of the reading area is detected, the optical pickup is moved again to the reading area and reading is continuously started in the same area. (For example, refer to Patent Document 2). In addition, an information recording / reproducing apparatus is known in which the first recording layer records information from the inner circumference side to the outer circumference direction, and the second recording layer records information from the outer circumference side to the inner circumference direction ( For example, see Patent Document 3).

Japanese Patent No. 4240300 JP 2007-48363 A Japanese Patent No. 4340732

  However, in the above-described conventional optical disk processing apparatus, the number of times the optical pickup unit is moved in the initial preparation operation performed when the optical disk is loaded is large, and as a result, the time required for the initial preparation operation becomes long. Even if the contents disclosed in Patent Document 1 to Patent Document 3 described above are applied, the above problem cannot be solved.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an optical disk processing apparatus that can reduce the number of times the optical pickup unit is moved in an initial preparation operation performed when an optical disk is loaded. And

  In order to achieve the above object, according to the first aspect of the present invention, an optical disk is mounted, a spindle motor that rotates the mounted optical disk, and the optical disk is irradiated with light and reflected light from the optical disk is received. An optical pickup unit that outputs a light reception signal corresponding to the optical pickup unit that changes the irradiation position of light on the optical disk by moving, and a control unit that controls execution of an initial preparation operation performed when the optical disk is mounted on the spindle motor; In the initial preparation operation, the optical pickup unit irradiates light to the inner circumference control information recording area existing on the inner circumference side of the optical disc and receives the reflected light, and at that time, receives the light received from the optical pickup unit. Inner circumference control information reading operation for reading the control information recorded in the inner circumference control information recording area based on the signal The optical pickup unit irradiates the outer peripheral control information recording area existing on the outer peripheral side of the optical disc and receives the reflected light, and records the outer peripheral control information based on the light reception signal output from the optical pickup unit at that time. The outer circumference control information reading operation for reading the control information recorded in the area, and the optical pickup unit irradiates the inner circumference control information recording area with light and receives the reflected light, and is output from the optical pickup unit at that time. Based on the received light signal, a first inner circumference physical adjustment value determination operation for determining an adjustment value when reading information recorded on the optical disc, and between the inner circumference control information recording area and the outer circumference control information recording area of the optical disc. Is performed when user recording information is recorded in the user recording area existing in the optical pickup unit. When the information recorded on the optical disk is read based on the light reception signal output from the optical pickup unit at that time while irradiating the inner recording area of the user recording area and receiving the reflected light. A second inner circumference physical adjustment value determination operation for determining an adjustment value, and an operation performed when the optical disc is a multi-layer disc. Third inner circumference physical for irradiating light and receiving reflected light and determining an adjustment value for reading information recorded on the optical disk based on a light reception signal output from the optical pickup unit at that time Adjustment value determination operation and the optical pickup unit irradiates light to the outer periphery control information recording area and receives the reflected light. At that time, the optical pickup unit And an outer peripheral physical adjustment value determining operation for determining an adjustment value for reading information recorded on the optical disk based on the light reception signal output from the control means. 1 inner circumference physical adjustment value determination operation, inner circumference control information reading operation, outer circumference control information reading operation, outer circumference physical adjustment value determination operation, second inner circumference physical adjustment value determination operation, third inner circumference physical adjustment value determination They are executed in order of operation.

  According to a second aspect of the present invention, in the optical disc processing apparatus according to the first aspect, the BD-RE is handled as an optical disc.

  According to the first and second aspects of the invention, in the initial preparation operation, the outer periphery physical adjustment value determining operation is executed following the outer periphery control information reading operation, and the second inner periphery physical adjustment value determining operation is performed. Therefore, the number of movements of the optical pickup unit in the initial preparation operation can be reduced as compared with the conventional optical disk processing apparatus that handles the BD-RE. Thereby, the time required for the initial preparation operation can be shortened.

1 is an electrical block configuration diagram showing a schematic configuration of an optical disc processing apparatus according to an embodiment of the present invention. 6 is a flowchart showing an initial preparation operation of the optical disc processing apparatus. 10 is a flowchart showing an initial preparation operation of a conventional optical disc processing apparatus.

  Hereinafter, an optical disk processing apparatus according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows the configuration of an optical disc processing apparatus according to the present embodiment. The optical disc processing device 1 is a device that records information on the optical disc 2 and reads information recorded on the optical disc 2. The optical disc processing apparatus 1 handles, for example, a BD-RE as the optical disc 2, and records and reads information on the BD-RE.

  The optical disk processing apparatus 1 includes a disk sensor 11, a spindle motor 12, an optical pickup unit 13, a seek motor 14, a signal processing unit 15, a signal characteristic value measuring unit 16, a memory 17, a tuner 18, and a remote controller. 19, a remote control receiving unit 20, a control unit 21 that controls the operation of the optical disc processing apparatus 1, and the like.

  The optical disc 2 is inserted from a disc insertion portion (not shown) and mounted on the spindle motor 12. The disc sensor 11 detects the optical disc 2 inserted from the disc insertion portion, and outputs a disc detection signal indicating that the optical disc 2 has been inserted from the disc insertion portion. The spindle motor 12 is rotationally driven under the control of the control unit 21 and rotates the mounted optical disk 2.

  The optical pickup unit 13 is for recording information on the optical disc 2 and for reading information recorded on the optical disc 2. The optical pickup unit 13 irradiates the optical disc 2 with light and receives reflected light from the optical disc 2 and outputs a received light signal corresponding to the received light intensity (reflected light intensity from the optical disc 2).

  The optical pickup unit 13 includes a light emitting element 31, a light projecting lens 32, a beam splitter 33, an aberration adjusting lens 34, an objective lens 35, a light receiving lens 36, and a light receiving element 37.

  The light emitting element 31 is driven to emit light under the control of the control unit 21 and emits light (recording light for recording information or reading light for reading information). Light emitted from the light emitting element 31 is irradiated onto the optical disc 2 through the light projection lens 32, the beam splitter 33, the aberration adjustment lens 34, and the objective lens 35. The light reflected by the optical disk 2 is received by the light receiving element 37 through the objective lens 35, the aberration adjusting lens 34, the beam splitter 33, and the light receiving lens 36. The light receiving element 37 outputs a light receiving signal having a voltage level corresponding to the light receiving intensity. The light receiving element 37 has a plurality of light receiving regions, and outputs a light receiving signal having a voltage level corresponding to the light receiving intensity for each light receiving region.

  In other words, the optical pickup unit 13 irradiates the optical disk 2 with the light emitted from the light emitting element 31 and receives the reflected light from the optical disk 2 by the light receiving element 37 to obtain the received light intensity (the reflected light intensity from the optical disk 2). Output the corresponding received light signal.

  The seek motor 14 is driven under the control of the control unit 25 and moves the optical pickup unit 13 in the radial direction of the optical disc 2. When the optical pickup unit 13 moves in the radial direction of the disk 2, the irradiation position of the light on the optical disk 2 by the optical pickup unit 13 changes in the radial direction of the optical disk 2.

  The optical pickup unit 13 includes a focusing actuator 41, a tracking actuator 42, a lens tilt actuator 43, and a lens position actuator 44.

  The focusing actuator 41 is driven under the control of the control unit 21 and changes the position of the objective lens 35 in a direction perpendicular to the information recording layer of the optical disc 2. The tracking actuator 42 is driven under the control of the control unit 21 and changes the position of the objective lens 35 in the radial direction of the optical disc 2. When the position of the objective lens 35 changes in a direction perpendicular to the information recording layer of the optical disc 2, light irradiated to the optical disc 2 by the optical pickup unit 13 (light emitted from the light emitting element 31 and collected by the objective lens 35). ) In the direction perpendicular to the information recording layer of the optical disc 2. Further, the position of the objective lens 35 changes in the radial direction of the optical disc 2, whereby the position of the light condensing point of light irradiated on the optical disc 2 by the optical pickup unit 13 changes in the radial direction of the optical disc 2.

  The lens tilt actuator 43 is driven under the control of the control unit 21 and changes the tilt of the objective lens 35. The lens position actuator 44 is driven under the control of the control unit 21 and changes the position of the aberration adjustment lens 34. As the inclination of the objective lens 35 changes, the aberration of light applied to the optical disc 2 by the optical pickup unit 13 changes. Further, as the position of the aberration adjustment lens 34 changes, the aberration of light applied to the optical disc 2 by the optical pickup unit 13 changes.

  The signal processing unit 15 generates an information reading signal from the light reception signal output from the optical pickup unit 13. The information reading signal is a signal corresponding to the arrangement of recording marks and recording spaces formed on the information recording track of the optical disc 2 and is a signal representing information recorded on the optical disc 2.

  Further, the signal processing unit 15 generates a focusing error signal and a tracking error signal from the light reception signal output from the optical pickup unit 13. The focusing error signal is a signal corresponding to a shift amount of the light condensing point irradiated to the optical disc 2 by the optical pickup unit 13 from the information recording layer of the optical disc 2 in the direction perpendicular to the information recording layer. The tracking error signal is a signal corresponding to the amount of deviation in the radial direction from the information recording track of the optical disc 2 of the condensing point of the light irradiated to the optical disc 2 by the optical pickup unit 13.

  The signal characteristic value measuring unit 16 measures the signal characteristics (modulation degree, jitter value, asymmetry, etc.) of the information read signal generated by the signal processing unit 15. The memory 17 stores various information related to the operation of the optical disc processing apparatus 1 under the control of the control unit 21.

  The tuner 18 receives a television signal broadcast from a television broadcasting station under the control of the control unit 21, and based on the television signal, a video signal based on the television signal and a television signal. Generate an audio signal.

  The remote controller 19 is operated by the user to instruct various operations of the optical disc processing apparatus 1 and transmits an operation signal indicating the operation content. The remote control receiving unit 20 receives an operation signal transmitted from the remote control 19 and outputs a remote control reception signal indicating the operation content of the remote control 19.

  The control unit 21 detects that the optical disk 2 is mounted on the spindle motor 12 based on the disk detection signal output from the disk sensor 11. The control unit 21 rotates the optical disc 2 by driving the spindle motor 12 to rotate. Further, the control unit 21 causes the optical pickup unit 13 to emit light by driving the light emitting element 31 of the optical pickup unit 13 to emit light. The control unit 21 moves the optical pickup unit 13 by driving the seek motor 14.

  Further, the controller 21 controls the position of the objective lens 35 in the direction perpendicular to the information recording layer of the optical disc 2 by driving the focusing actuator 41. Further, the control unit 21 controls the position of the objective lens 35 in the radial direction of the optical disc 2 by driving the tracking actuator 42. The control unit 21 controls the tilt of the objective lens 35 by driving the lens tilt actuator 43. The control unit 21 controls the position of the aberration adjustment lens 34 by driving the lens position actuator 44. The control unit 21 determines the operation content of the remote controller 19 by the user based on the remote control reception signal output from the remote control reception unit 20.

  The control unit 21 records information on the optical disc 2 by controlling the rotation of the optical disc 2, the movement of the optical pickup unit 13, and the irradiation of light onto the optical disc 2 by the optical pickup unit 13. Read the information recorded in. That is, the control unit 21 irradiates the optical disc 2 with light (recording light for recording information) by the optical pickup unit 13 while rotating the optical disc 2, and the array corresponding to the signal representing the information to be recorded. Thus, information is recorded on the optical disc 2 by forming a recording mark and a recording space on the optical disc 2. The control unit 21 irradiates the optical disc 2 with light (reading light for reading information) by the optical pickup unit 13 while rotating the optical disc 2, and information generated by the signal processing unit 15 at that time By acquiring the read signal (that is, based on the light reception signal output from the optical pickup unit 13), the information recorded on the optical disc 2 is read.

  The control unit 21 performs focusing servo and tracking servo when recording information on the optical disc 2 and reading information recorded on the optical disc 2. The focusing servo is an operation for holding the position of the condensing point of the light irradiated to the optical disc 2 by the optical pickup unit 13 on the information recording layer of the optical disc 2, and the tracking servo is the optical disc 2 by the optical pickup unit 13. In this operation, the position of the condensing point of the irradiated light is held on the information recording track of the optical disc 2. The control unit 21 controls the position of the objective lens 35 in the direction perpendicular to the information recording layer of the optical disc 2 so that the focusing error signal becomes 0 based on the focusing error signal output from the signal processing unit 15. To perform the focusing servo. Further, the control unit 21 controls the position of the objective lens 35 in the radial direction of the optical disc 2 so that the tracking error signal becomes 0 based on the tracking error signal output from the signal processing unit 15. Servo is performed.

  In addition, the control unit 21 performs an initial preparation operation. The initial preparation operation is an operation performed when the optical disc 2 is mounted on the spindle motor 12 and is an adjustment value when reading control information recorded on the optical disc 2 or reading information recorded on the optical disc 2. This is an operation for making a determination. The control information recorded on the optical disc 2 includes disc ID information for individually identifying the optical disc 2, disc physical information indicating the type of the optical disc 2, management information indicating an area where user recording information is recorded, and the like. The user record information is information such as video and audio used by the user. Adjustment values for reading information recorded on the optical disc 2 are the tilt of the objective lens 35, the position of the aberration adjustment lens 34, the servo loop system for performing the focusing servo and tracking servo (the objective lens 35, the light receiving element). 37, a servo loop system including the control unit 21, the focusing actuator 41, and the tracking actuator 42).

  The optical disk processing apparatus 1 of the present invention handles, for example, a BD-RE as the optical disk 2 and records and reads information on the BD-RE. In the BD-RE, a predetermined area on the inner circumference side is assigned as an inner circumference control information recording area, a predetermined area on the outer circumference side is assigned as an outer circumference control information recording area, and an inner circumference control information recording area and an outer circumference control information recording area are recorded. An area between the areas is allocated as a user recording area. The inner circumference control information recording area is an area in which disc ID information for individually identifying the optical disc 2 and disc physical information indicating the type of the optical disc 2 are recorded in advance as control information. The user recording area is an area for recording user recording information such as video and audio used by the user. The inner circumference control information recording area is also an area for recording management information indicating an area where user record information is recorded as control information in accordance with the recording of the user record information. The outer circumference control information recording area corresponds to the management information indicating the area where the user record information is recorded as the control information when the management information cannot be recorded in the inner circumference control information recording area. This is an area for recording.

  The initial preparation operation performed by the control unit 21 in the optical disc processing apparatus 1 of the present invention includes an inner circumference control information reading operation, an outer circumference control information reading operation, a first inner circumference physical adjustment value determining operation, and a second inner circumference operation. It includes a physical adjustment value determination operation, a third inner periphery physical adjustment value determination operation, and an outer periphery physical adjustment value determination operation.

  The inner circumference control information reading operation is an operation of reading control information recorded in the inner circumference control information recording area of the optical disc 2. In the inner circumference control information reading operation, the controller 21 irradiates the inner circumference control information recording area existing on the inner circumference side of the optical disc 2 with the optical pickup unit 13 and receives the reflected light. Control information recorded in the inner circumference control information recording area of the optical disc 2 based on the light reception signal output from the pickup unit 13 (by acquiring the information read signal generated by the signal processing unit 15 at that time). Read.

  The outer periphery control information reading operation is an operation of reading control information recorded in the outer periphery control information recording area of the optical disc 2. In the outer periphery control information reading operation, the control unit 21 irradiates the outer periphery control information recording area existing on the outer periphery side of the optical disc 2 with the optical pickup unit 13 and receives the reflected light. At that time, the optical pickup unit 13 The control information recorded in the outer periphery control information recording area of the optical disc 2 is read based on the light reception signal output from the optical disc 2 (by acquiring the information read signal generated by the signal processing unit 15 at that time).

  The first inner circumference physical adjustment value determining operation is an operation for determining an adjustment value when reading information recorded in the inner circumference control information recording area of the optical disc 2. In the first inner circumference physical adjustment value determination operation, the control unit 21 irradiates the inner circumference control information recording area of the optical disc 2 with the optical pickup unit 13 and receives the reflected light. At that time, the optical pickup unit When reading the information recorded in the inner circumference control information recording area of the optical disc 2 based on the light reception signal output from the signal 13 (based on the signal characteristic value measured by the signal characteristic value measuring unit 16 at that time) And the adjustment value is stored in the memory 17.

  The second inner circumference physical adjustment value determination operation is an operation performed when user record information is recorded in the user recording area of the optical disc 2 and is recorded on the inner circumference side of the user recording area of the optical disc 2. This is an operation for determining an adjustment value when reading the stored information. In the second inner circumference physical adjustment value determining operation, the control unit 21 irradiates the inner peripheral side area of the user recording area of the optical disc 2 with the optical pickup unit 13 and receives the reflected light. Based on the received light signal output from the optical pickup unit 13 (based on the signal characteristic value measured by the signal characteristic value measuring unit 16 at that time), it is recorded on the inner circumference side of the user recording area of the optical disc 2. An adjustment value for reading information is determined, and the adjustment value is stored in the memory 17.

  The third inner circumference physical adjustment value determining operation is an operation performed when the optical disc 2 is a multi-layer disc, and when reading the information recorded in the recording area on the inner circumference side of the second layer of the optical disc 2 This is an operation for determining the adjustment value. In the third inner circumference physical adjustment value determination operation, the control unit 21 irradiates light to the inner circumference side area of the recording area of the second layer of the optical disc 2 by the optical pickup unit 13 and receives the reflected light. Based on the light reception signal output from the optical pickup unit 13 at that time (based on the signal characteristic value measured by the signal characteristic value measuring unit 16 at that time), recording on the inner peripheral side of the second layer of the optical disc 2 is performed. An adjustment value for reading information recorded in the area is determined, and the adjustment value is stored in the memory 17.

  The outer peripheral physical adjustment value determining operation is an operation of determining an adjustment value when reading information recorded on the outer peripheral side of the user recording area of the optical disc 2. In the outer periphery physical adjustment value determination operation, the optical pickup unit 13 irradiates light to the outer periphery control information recording area of the optical disc 2 and receives the reflected light. Based on the light reception signal output from the optical pickup unit 13 at that time. An adjustment value for reading information recorded on the outer periphery side of the user recording area of the optical disc 2 is determined based on the signal characteristic value measured by the signal characteristic value measurement unit 16 at that time, and the adjustment value Is stored in the memory 17.

  Further, after performing the initial preparation operation, the control unit 21 receives an operation based on the video signal generated by the tuner 18 and an audio based on the audio signal generated by the tuner 18 in response to an operation of the remote controller 19 by the user. It records in the user recording area of the optical disk 2 as user recording information. At this time, based on the management information read in the initial preparation operation, the control unit 21 records the user recording information in the empty area of the user recording area, and also displays management information indicating the area where the user recording information is recorded on the optical disc 2. Are recorded in the inner circumference control information recording area or the outer circumference control information recording area.

  In addition, after performing the initial preparation operation, the control unit 21 receives the operation of the remote controller 19 by the user and reads the user recording information recorded in the user recording area of the optical disc 2. At this time, the control unit 21 reads the user record information based on the management information read in the initial preparation operation. Video and audio based on user record information read from the optical disc 2 are output by the display 91 and the speaker 92 of the external device 90.

  Further, when the control unit 21 reads the information recorded on the optical disc 2 in the operation after receiving the operation of the remote controller 19 by the user after performing the initial preparation operation and the initial preparation operation, the control unit 21 is recorded on the optical disc 2. The information recorded on the optical disc 2 is read after adjusting the adjustment value for reading the information. That is, the control unit 21 determines the tilt of the objective lens 35, the position of the aberration adjustment lens 34, the gain of a servo loop system for performing focusing servo and tracking servo, etc., depending on which area of the optical disc 2 is read. Is adjusted to be the adjustment value (adjustment value determined in the initial preparation operation) stored in the memory 17 (or adjusted to be the adjustment value that is initially set), and then the optical disc. 2 is read.

  FIG. 2 shows a flowchart of the initial preparation operation of the optical disc processing apparatus 1. In the initial preparation operation, the control unit 21 first executes a first inner circumference physical adjustment value determination operation (# 1). That is, when the control unit 21 detects that the optical disc 2 is mounted on the spindle motor 12, the control unit 21 rotates the optical disc 2, irradiates the optical disc 2 with the optical pickup unit 13, and the optical disc by the optical pickup unit 13. The optical pickup unit 13 is moved so that the light irradiation position 2 is in the inner circumference control information recording area, and the first inner circumference physical adjustment value determination operation is executed.

  Subsequently, the control unit 21 executes an inner circumference control information reading operation (# 2). That is, after completing the first inner circumference physical adjustment value determining operation, the control unit 21 is in the state where the light irradiation position on the optical disc 2 by the optical pickup unit 13 is the inner circumference control information recording area. A circumferential control information reading operation is executed.

  Subsequently, the control unit 21 performs an outer periphery control information reading operation (# 3). That is, after completing the inner circumference control information reading operation, the control unit 21 moves the optical pickup unit 13 so that the light irradiation position on the optical disc 2 by the optical pickup unit 13 becomes the outer circumference control information recording area. An outer periphery control information reading operation is executed.

  Subsequently, the control unit 21 performs an outer peripheral physical adjustment value determination operation (# 4). That is, after completing the outer periphery control information reading operation, the control unit 21 performs the outer periphery physical adjustment value determination operation in a state where the light irradiation position on the optical disc 2 by the optical pickup unit 13 is the outer periphery control information recording area. Run.

  Subsequently, the control unit 21 executes a second inner circumference physical adjustment value determination operation (# 5). That is, after completing the outer peripheral physical adjustment value determining operation, the control unit 21 moves the optical pickup unit 13 so that the light irradiation position of the optical pickup 2 by the optical pickup unit 13 becomes the inner peripheral control information recording area. Then, the second inner circumference physical adjustment value determination operation is executed.

  Subsequently, the control unit 21 executes a third inner circumference physical adjustment value determination operation (# 6). That is, after completing the second inner circumference physical adjustment value determination operation, the control unit 21 is in a state where the irradiation position of the light onto the optical disc 2 by the optical pickup unit 13 is the inner circumference control information recording area. 3. The inner circumference physical adjustment value determining operation 3 is executed. And the control part 21 will complete | finish an initial stage preparation operation, if the 3rd inner periphery physical adjustment value determination operation | movement is completed.

  Thus, in the initial preparation operation, the control unit 21 performs the first inner circumference physical adjustment value determination operation, the inner circumference control information reading operation, the outer circumference control information reading operation, the outer circumference physical adjustment value determination operation, and the second inner circumference. The physical adjustment value determination operation and the third inner circumference physical adjustment value determination operation are executed in this order.

  According to the optical disc processing apparatus 1 configured as described above, in the initial preparation operation, the outer periphery physical adjustment value determination operation is executed following the outer periphery control information reading operation, and the second inner periphery physical adjustment value determination operation is performed following the second inner periphery physical adjustment value determination operation. 3 is executed, the number of movements of the optical pickup unit 13 in the initial preparation operation can be reduced as compared with a conventional optical disk processing apparatus that handles BD-RE. Thereby, the time required for the initial preparation operation can be shortened.

  In addition, this invention is not restricted to the structure of the said embodiment, A various deformation | transformation is possible. For example, the optical disk processing apparatus of the present invention may be integrally provided with a display and a speaker. In addition, information input from an external device may be recorded on an optical disc. Further, the present invention is not limited to an apparatus that handles a BD-RE as an optical disc, and there is a control information recording area on the inner peripheral side and the outer peripheral side, and a control information recording area on the inner peripheral side and a control information recording area on the outer peripheral side. The present invention can be applied to an apparatus that handles an optical disc having a user recording area between them.

DESCRIPTION OF SYMBOLS 1 Optical disk processing apparatus 2 Optical disk 11 Disk sensor 12 Spindle motor 13 Optical pick-up unit 14 Seek motor 15 Signal processing part 16 Signal characteristic value measurement part 17 Memory 18 Tuner 19 Remote control 20 Remote control receiving part 21 Control part 31 Light emitting element 32 Projection lens 33 Beam splitter 34 Aberration adjustment lens 35 Objective lens 36 Light receiving lens 37 Light receiving element 41 Focusing actuator 42 Tracking actuator 43 Lens tilt actuator 44 Lens position actuator 90 External device 91 Display 92 Speaker

Claims (2)

A spindle motor that is mounted with an optical disk and rotates the mounted optical disk;
An optical pickup unit that irradiates light to the optical disc and receives reflected light from the optical disc, outputs a light reception signal corresponding to the received light intensity, and changes an irradiation position of the optical disc by moving;
Control means for controlling execution of an initial preparation operation performed when an optical disk is mounted on the spindle motor,
The initial preparation operation is:
The optical pickup unit irradiates light to the inner circumference control information recording area existing on the inner circumference side of the optical disc and receives the reflected light, and based on the received light signal output from the optical pickup unit at that time, An inner circumference control information reading operation for reading the control information recorded in the inner circumference control information recording area;
The outer periphery control information recording area existing on the outer periphery side of the optical disc is irradiated with light by the optical pickup unit and the reflected light is received, and the outer periphery control is performed based on the light reception signal output from the optical pickup unit at that time. Outer periphery control information reading operation for reading the control information recorded in the information recording area;
The optical pickup unit irradiates the inner circumference control information recording area with light and receives the reflected light. Based on the light reception signal output from the optical pickup unit at that time, information recorded on the optical disc is recorded. A first inner circumference physical adjustment value determination operation for determining an adjustment value at the time of reading;
An operation performed when user recording information is recorded in a user recording area existing between the inner circumference control information recording area and the outer circumference control information recording area of an optical disc, wherein the user recording area is recorded by the optical pickup unit. An adjustment value for reading information recorded on the optical disk based on a light reception signal output from the optical pickup unit at that time while irradiating light to the inner peripheral side region of the light and receiving the reflected light. A second inner circumference physical adjustment value determination operation to be determined;
The operation is performed when the optical disc is a multilayer disc, and the optical pickup unit irradiates the inner peripheral side of the recording area of the second layer of the optical disc and receives the reflected light. A third inner circumference physical adjustment value determining operation for determining an adjustment value when reading information recorded on the optical disc based on a light reception signal output from the optical pickup unit;
The optical pickup unit irradiates the outer periphery control information recording area with light and receives the reflected light, and reads information recorded on the optical disk based on a light reception signal output from the optical pickup unit at that time. An optical disc processing apparatus including an outer peripheral physical adjustment value determining operation for determining an adjustment value at the time,
The control means includes
In the initial preparation operation, the first inner circumference physical adjustment value determining operation, the inner circumference control information reading operation, the outer circumference control information reading operation, the outer circumference physical adjustment value determining operation, and the second inner circumference physical adjustment value. An optical disc processing apparatus, wherein the determination operation and the third inner circumference physical adjustment value determination operation are executed in this order.   The optical disk processing apparatus according to claim 1, wherein BD-RE is handled as an optical disk.

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