JP3579265B2 - Disk recording and playback device - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a disk recording / reproducing apparatus for reading and writing data on a disk which is a recording medium on a disk.
[0002]
[Prior art]
In the conventional disk recording / reproducing apparatus, the automatic adjustment of the pickup servo system constituting the disk recording / reproducing apparatus is performed every time when the apparatus is started up or when the disk is mounted, or the result of the automatic adjustment is temporarily stored in the internal nonvolatile memory of the apparatus. It is stored in a memory, and from the next time, the automatic adjustment result stored in the memory is set.
[0004]
[Problems to be solved by the invention]
However, in the above-described conventional disk recording / reproducing apparatus, the automatic adjustment of the pickup servo system, which is necessarily required for recording / reproducing the disk, is performed every time the apparatus is turned on or the disk is mounted, so that the start-up time of the apparatus becomes long. Also, when the result of the automatic adjustment is stored in the internal memory of the apparatus and then set to the automatic adjustment result stored in the memory from the next time, the startup time of the apparatus is shortened, but the internal memory of the apparatus is reduced. Cause an increase.
[0007]
Therefore, an object of the present invention is to provide a disk recording / reproducing apparatus in which the start-up time of the apparatus is reduced without increasing the memory capacity inside the apparatus.
[0010]
[Means for Solving the Problems]
In order to achieve the above object, a disk recording / reproducing apparatus of the present invention is a disk recording / reproducing apparatus for reproducing data recorded on a disk and recording data on the disk, Automatic adjusting means for performing automatic adjustment of a predetermined mechanism to be configured, and a system controller for reading data recorded on the disk and writing data to the disk, wherein the system controller Reads device identification information for identifying a recorded disk recording / reproducing device, determines whether the read device identification information corresponds to the disk recording / reproducing device, and if not, the system controller Is automatically adjusted using the automatic adjustment means, and is recorded on the disk. The system identification information is rewritten to the device identification information of the disk recording / reproducing device, and the automatic adjustment result recorded on the disk is rewritten to the result of the automatic adjustment performed by the disk recording / reproducing device. Sets the parameters of the predetermined mechanism in the automatic adjustment result recorded on the disk read from the disk, and does not rewrite the device identification information and the automatic adjustment result recorded on the disk. And
[0011]
According to such a configuration, when the device identification information recorded on the disc and the device identification information of the disc recording / reproducing device correspond to each other, the automatic adjustment result recorded on the disc is read, and the automatic adjustment result is added to the result. Since parameters of a predetermined mechanism such as a pickup servo system are set, there is no need to perform automatic adjustment, and the start-up time of the apparatus can be reduced by that time. If the device identification information recorded on the disc does not correspond to the device identification information of the disc recording / reproducing device (that is, if the device that last used the disc is not the device), a new automatic adjustment is performed. Therefore, it is possible to cope with individual differences of the devices. Further, since the result of the automatic adjustment is recorded on the disk, the internal memory capacity of the disk recording / reproducing apparatus does not increase.
[0021]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing a system configuration of a disk recording / reproducing apparatus according to an embodiment of the present invention. In the figure, 1 is a disk, 2 is a spindle motor, 3 is a pickup, 4 is an RF amplifier, 5 is a demodulation circuit, 6 is a decode and error correction circuit, 7 is an output processing circuit, 8 is a driver, 9 is a driver, 10 Is a modulation circuit, 11 is an encoding and error correction circuit, 12 is an input processing circuit, 13 is a servo processor, 14 is disk control information obtaining means, 15 is a system controller, 16 is temperature detecting means, 17 is apparatus identification information means, 18 Is a display means, 19 is an operation input means, and 20 is a magnetic head.
[0022]
The function of each part will be described. The disk 1 is a disk-shaped recording medium that is detachable from the disk recording / reproducing apparatus, and is capable of recording data at high density. The spindle motor 2 is a motor for rotating the disk 1. The pickup 3 irradiates the disk 1 with light at the time of reproduction, reads reflected light from the disk 1 and reads out an RF signal (modulated data) recorded on the disk 1, and at the time of recording, outputs a high-output light beam. Irradiate the disk 1 to locally increase the temperature of the disk 1. At the time of recording, a modulation magnetic field is applied by the magnetic head 20 to a region on the disk 1 where the temperature has risen, and an RF signal is recorded on the disk 1.
[0023]
The RF amplifier 4 amplifies the RF signal read by the pickup 3. The demodulation circuit 5 detects synchronization and demodulates data from the RF signal amplified by the RF amplifier 4. The decoding and error correction circuit 6 performs error correction and decoding on the data demodulated by the demodulation circuit 5. The output processing circuit 7 outputs the data that has passed through the decoding and error correction circuit 6 according to a predetermined output format.
[0024]
The input processing circuit 12 performs predetermined processing on the input data and outputs the processed data. The data output from the input processing circuit 12 is coded by the encoding and error correction circuit 11 and added with an error correction code, and then converted by the modulation circuit 10 into a recording signal in a format suitable for recording. Is done. Based on the recording signal, the driver 8 controls the light beam output from the pickup 3 and the driver 9 controls the magnetic field applied from the magnetic head 20 to the disk 1. In other words, the modulation according to the recording signal. A magnetic field is applied to the disk 1.
[0025]
The servo processor 13 includes a spindle motor 2, a slide motor (not shown) for moving the pickup 3 in a radial direction of the disk 1, and a pickup motor 3 for irradiating light to the disk 1 and incident light reflected from the disk 1. And a driver circuit for driving an actuator (not shown) for moving an objective lens (not shown). The above-described motors and actuators to be driven are feedback-controlled so that operations such as following are performed accurately. Further, the servo processor 13 has automatic adjustment means 13a for automatically adjusting the pickup servo system related to the pickup 3.
[0026]
The system controller 15 recognizes the current access position of the disk 1 and reads the contents recorded on the disk 1 by inputting the output of the decoding and error correction circuit 6 through the disk control information obtaining means 14. You can do it. Further, the system controller 15 can output various kinds of information to the encoding and error correction circuit 11 and record the information on the disk 1.
[0027]
The temperature detecting means 16 measures the environmental temperature at which the apparatus is placed, and its operation is controlled by the system controller 15. The device identification information means 17 stores device identification information for identifying the disk recording / reproducing device, and the system controller 15 reads the device identification information as needed.
[0028]
The display means 18 displays the current position information of the pickup 3 and the operation state of the apparatus under the control of the system controller 15. The operation input unit 19 is for a user to input a command to the apparatus, and the system controller 15 controls the operation of each unit based on the input command.
[0029]
In the disk recording / reproducing apparatus of the present embodiment, as shown in FIG. 2, the innermost circumference of the data recording area D of the disk 1 is used as the recording management information storage area 10. Further, the recording management information storage area 10 includes an acquisition information management area 101, a device identification information storage area 102, a temperature information storage area 103, an automatic adjustment information storage area 104, a reproduction stop position information storage area 105, and other related information storage areas 106. It is divided into six areas.
[0030]
In the device identification information storage area 102, device identification information (for example, device model name, manufacturer name, etc.) for identifying the disk recording / reproducing device is measured, and in the temperature information storage area 103, the temperature measurement means 17 measures. The adjusted temperature data, the automatic adjustment result adjusted by the automatic adjustment in the automatic adjustment information storage area 104, and the reproduction stop position information indicating the position on the disk 1 where the reproduction has stopped in the reproduction stop position information storage area 105. In the other related information storage area 106, other related information (for example, program memory information, random access setting information, sound quality setting information, volume setting information, etc.) related to the reproduction of data recorded on the disc 1 is stored by the user. The set operation contents and the progress of the game (data that fluctuates along with the playback of the disc 1) are displayed. Each writes.
[0031]
The acquired information management area 101 is used by being divided into five areas: a device identification information management area 201, a temperature information management area 202, an automatic adjustment information management area 203, a reproduction stop position information management area 204, and a related information management area 205. I do.
[0032]
In the device identification information management area 201, whether or not the device identification information is written in the device identification information storage area 102 (the presence or absence of the device identification information), and if the device identification information is written, the writing position ( Record position).
[0033]
In the temperature information management area 202, whether or not the temperature information has been written to the temperature information storage area 103 (the presence or absence of the temperature information), and if the temperature information has been written, the writing position (recording position) thereof is written. .
[0034]
In the automatic adjustment information management area 203, whether the automatic adjustment information is written in the automatic adjustment information storage area 104 (whether or not there is automatic adjustment information), and if the automatic adjustment information is written, the writing position ( Record position).
[0035]
In the reproduction stop position information management area 204, whether the reproduction stop position information has been written in the reproduction stop position information storage area 105 (presence or absence of reproduction stop position information), and if the reproduction stop position information has been written Write the write position (recording position).
[0036]
In the other related information management area 205, whether or not other related information has been written in the other related information storage area 106 (presence or absence of other related information), and if other related information has been written, the writing position ( Record position).
[0037]
The operation performed by the system controller 15 when the power is turned on will be described with reference to the flowcharts shown in FIGS. When the power is turned on, first, the device identification information, which is the information for identifying the device stored in the device identification information means 17, is read (# 105). Next, the pickup 3 is moved to the inner peripheral side of the disk 1 (# 110). Next, the temperature is measured by the temperature measuring means 16 to obtain the current environmental temperature (# 115). Next, the spindle motor 2 is started to start the rotation of the disk 1 (# 120).
[0038]
Next, data respectively written in the device identification information management area 201, the temperature information management area 202, the automatic adjustment information management area 203, the reproduction stop position information management area 204, and the other related information management area 205 of the acquisition information management area 101. Is read (# 125).
[0039]
Next, it is determined whether there is automatic adjustment information based on the data read from the automatic adjustment information management area 203 (# 130). If there is automatic adjustment information (Y of # 130), the process proceeds to # 135, while if there is no automatic adjustment information (N of # 130), the process proceeds to # 175.
[0040]
In # 135, it is determined whether or not there is device identification information based on the data read from the device identification information management area 201. If there is device identification information (Y of # 135), the process proceeds to # 140, while if there is no device identification information (N of # 135), the process proceeds to # 175.
[0041]
In # 140, it is determined whether or not there is temperature information based on the data read from the temperature information management area 202. If there is temperature information (Y of # 140), device identification information is read from the device identification information storage area 102 based on the data read from the device identification information management area 201 (# 145), and thereafter, the process proceeds to # 150. . On the other hand, if there is no temperature information (N of # 140), the process proceeds to # 175.
[0042]
In # 150, it is determined whether or not the device identification information read in # 105 matches the device identification information read in # 145. If the two device identification information match (Y of # 150), the temperature information is read from the temperature information storage area 103 based on the data read from the temperature information management area 202 (# 155), and then the process proceeds to # 160. I do. On the other hand, if the two device identification information do not match (N in # 150), the process proceeds to # 175.
[0043]
In # 160, the difference between the temperature information read in # 115 (that is, the current temperature) and the temperature information read in # 155 (that is, the environmental temperature at the time of the last automatic adjustment) is within an allowable range. It is determined whether or not there is. If the difference between the two pieces of temperature information is within the allowable range (Y in # 160), the system controller 15 writes the information into the automatic adjustment information storage area 104 based on the data read from the automatic adjustment information management area 203. The automatic adjustment information is read (# 165), and the parameters of the pickup servo system are set in the read automatic adjustment information (# 170).
[0044]
On the other hand, if the difference between the two pieces of temperature information is not within the allowable range (N in # 160), the process proceeds to # 175. In # 175, the automatic adjustment of the pickup servo system is performed by the automatic adjustment means 13a of the servo processor 13.
[0045]
In # 180, the presence / absence of reproduction stop position information is determined based on the data read from the reproduction stop position information management area 204. If there is reproduction stop position information (Y in # 180), the reproduction stop position information is read from the reproduction stop position information storage area 105 based on the data read from the reproduction stop position information management area 204 (# 185). Move to 190. On the other hand, if there is no reproduction stop position information (N in # 180), the process directly proceeds to # 190.
[0046]
In # 190, based on the data read from the other related information management area 205, it is determined whether or not there is other related information in the other related information storage area 106. If there is other related information (Y in # 190), other related information is read from the other related information storage area 106 based on the data read from the other related information management area 205 (# 195), and then the process proceeds to # 200. . On the other hand, if there is no other related information (N in # 190), the process directly proceeds to # 200.
[0047]
In step # 200, information (TOC, UTOC) necessary for disc control is read, and if there is other relevant information, setting according to the other relevant information is performed. After setting to start the reproduction, a reproduction process for starting the reproduction is performed.
[0048]
The operation performed by the system controller 15 when stopping reproduction of a disc will be described with reference to the flowchart shown in FIG. First, playback stop processing for stopping playback of the disc is performed (# 300). Next, it is determined whether there is information to be updated (# 305). If there is information to be updated (Y of # 305), the process proceeds to # 310, while if there is no information to be updated (N of # 305), the process proceeds to # 360.
[0049]
In # 310, it is determined whether or not the reproduction stop position information has been updated. If the reproduction stop position information has been updated (Y of # 310), the updated reproduction stop position information is prepared (# 315), and then the process proceeds to # 320. On the other hand, if the reproduction stop position information has not been updated (N of # 310), the process directly proceeds to # 320.
[0050]
In # 320, it is determined whether or not the automatic adjustment is actually performed by the automatic adjustment unit 13a. If the automatic adjustment has been performed (Y of # 320), an adjustment result (automatic adjustment information) by the automatic adjustment is prepared (# 325), and the temperature information acquired at the time of startup is prepared (# 330). Thereafter, the flow shifts to # 335. On the other hand, if the automatic adjustment has not been performed (N in # 320), the process directly proceeds to # 335.
[0051]
In step # 335, based on the device identification information read from the device identification information unit 17 when the device is started up and the device identification information read from the device identification information storage area 102, it is determined whether or not the device has changed. It is determined whether or not the device was used last. If it is not the device concerned (N of # 335), the device identification information read from the device identification information means 17 is prepared (# 340), and thereafter, the process proceeds to # 345. On the other hand, if it is the device concerned (Y of # 335), the process directly proceeds to # 345.
[0052]
In # 345, it is determined whether or not the other related information has been updated. If the other related information has been updated (Y of # 345), the updated other related information is prepared (# 350), and the process proceeds to # 355. On the other hand, if the other related information has not been updated (N of # 345), the process directly proceeds to # 355.
[0053]
In step # 355, the prepared information is written in the corresponding storage area, and the data written in the management area is updated accordingly. Thereafter, a process of stopping the rotation of the disk 1 (a rotation stop process) is performed (# 360).
[0054]
As described above, in the disc recording / reproducing apparatus of the present embodiment, when the apparatus identification information recorded on the disc corresponds to the apparatus identification information of the disc recording / reproducing apparatus, the automatic adjustment result recorded on the disc is read. Since the parameters of the pickup servo system are set in the result of the automatic adjustment, it is not necessary to perform the automatic adjustment, and the start-up time of the apparatus can be reduced by that time. In the case of an audio device, the time from when a disc is mounted to when sound is output is reduced, and in the case of a game device, the time until the start of a game is reduced.
[0055]
If the device identification information recorded on the disc does not correspond to the device identification information of the disc recording / reproducing device (that is, if the device that last used the disc is not the device), a new automatic adjustment is performed. Therefore, it is possible to cope with individual differences of the devices. Further, since the result of the automatic adjustment is recorded on the disk, the internal memory capacity of the disk recording / reproducing apparatus does not increase.
[0059]
【The invention's effect】
According to the disk recording / reproducing apparatus of the present invention, when the apparatus identification information recorded on the disk corresponds to the apparatus identification information of the disk recording / reproducing apparatus, the automatic adjustment result recorded on the disk is read, and the automatic adjustment result is read. Since the parameters of the pickup servo system are set in the adjustment result, there is no need to perform automatic adjustment, and the start-up time of the apparatus can be reduced by that time. If the device identification information recorded on the disc does not correspond to the device identification information of the disc recording / reproducing device (that is, if the device that last used the disc is not the device), a new automatic adjustment is performed. Therefore, it is possible to cope with individual differences of the devices. Further, since the result of the automatic adjustment is recorded on the disk, the internal memory capacity of the disk recording / reproducing apparatus does not increase.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a system configuration of a disk recording / reproducing apparatus according to an embodiment of the present invention.
FIG. 2 is a diagram showing an area on a disk in which various information is written.
FIG. 3 is a flowchart showing an operation performed by a system controller 15;
FIG. 4 is a flowchart showing an operation performed by the system controller 15;
FIG. 5 is a flowchart showing an operation performed by the system controller 15;
[Explanation of symbols]
Reference Signs List 1 disk 2 spindle motor 3 pickup 4 RF amplifier 5 demodulation circuit 6 decoding and error correction circuit 7 output processing circuit 8 driver 9 driver 10 modulation circuit 11 encoding and error correction circuit 12 input processing circuit 13 servo processor 14 disk control information obtaining means 15 System controller 16 Temperature detection means 17 Device identification information means 18 Display means 19 Operation input means 20 Magnetic head

Claims (1)

A disc recording and reproducing apparatus for reproducing data recorded on a disc and recording data on the disc,
An automatic adjusting unit for automatically adjusting a predetermined mechanism constituting the disk recording / reproducing apparatus, and a system controller for reading data recorded on the disk and writing data to the disk,
The system controller reads device identification information for identifying a disk recording / reproducing device recorded on the disk, and determines whether the read device identification information corresponds to the disk recording / reproducing device,
If not, the system controller performs automatic adjustment using the automatic adjustment means, rewrites the device identification information recorded on the disk with the device identification information of the disk recording / reproducing device, and records the information on the disk. Overwrites the automatic adjustment result to the result of automatic adjustment performed by the disk recording / reproducing device.
In the case of corresponding, the system controller sets the parameters of the predetermined mechanism in the automatic adjustment result recorded on the disk read from the disk, and sets the device identification information and the automatic adjustment result recorded on the disk. A disk recording / reproducing apparatus characterized by not rewriting data.

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