JP2011165270A - Optical disk device and optical disk - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an optical disk device which can suppress cost increase, while reliably shortening standby time when handling an optical disk having a plurality of data recording layers, and to provide the optical disk. <P>SOLUTION: The optical disk 2 having the plurality of data recording layers, records in a specific data recording layer, an adjusting value of an operation condition of the optical disk device 1 for reading or writing of data from or to the other data recording layers. The optical disk device 1 adjusts the operation condition in order to read the data from the specific data recording layer of the optical disk 2, reads the adjusting values recorded in the specific data recording layer and adjusts the operation condition for reading or writing of data from or to the other data recording layers by using the read adjusting values. Moreover, when ending the data processing, the optical disk device 1 records the adjusting value of the operation condition concerning the other data recording layers, in the specific data recording layer of the optical disk 2. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an optical disc apparatus that reads or writes data from or to an optical disc having a plurality of data recording layers, and an optical disc having a plurality of data recording layers.

  Conventionally, as a detachable recording medium for recording data used in an AV (audio / visual) device or a PC (personal computer), a CD (Compact Disc), a DVD (Digital Versatile Disk), or a BD (Blu-ray Disc (Blu-ray Disc)). Optical discs such as registered trademark)) are widely used. An optical disc apparatus that reads or writes data from or on an optical disc rotates the optical disc, irradiates the optical disc with laser light, and reads or writes data using the laser light. When reading or writing data from or to a loaded optical disk, the optical disk apparatus must first adjust the operating conditions to enable data reading or writing. For example, adjustment of laser output, adjustment of focus for focusing the laser beam on the optical disc, adjustment of tracking for causing the laser beam to follow a data track on the optical disc, adjustment of aberration of the laser beam, and the like. The optical disc apparatus starts reading or writing data after the adjustment of the operating conditions is completed. Normally, adjustment of operating conditions takes about 10 to several tens of seconds, and during this time, the optical disc apparatus needs to wait for reading or writing of data.

  The operating conditions of the optical disk device for enabling reading or writing of data with respect to the optical disk are affected by the warp and reflectivity of the optical disk, and vary depending on the individual optical disk. Patent Document 1 discloses a technique in which an adjustment value of an operation condition is recorded on an optical disc as information unique to the optical disc, and the optical disc apparatus adjusts the operation condition according to the adjustment value read from the optical disc. Japanese Patent Application Laid-Open No. 2004-228561 describes a technique for storing adjustment values of operating conditions that have been adjusted once in a host computer to which an optical disk device is connected, and reading adjustment values stored in the host computer for the second and subsequent times. . These techniques reduce the waiting time required for adjusting the operating conditions.

JP 2006-31911 A JP 2001-307330 A

  At present, an optical disc having two data recording layers is used, and in the future, it is expected that optical discs will be multilayered. In order to use an optical disc having a plurality of data recording layers in an optical disc apparatus, it is necessary to adjust operating conditions such as focus adjustment for each data recording layer. For this reason, when an optical disc having a plurality of data recording layers is used, the standby time required for adjusting the operating conditions becomes longer. Therefore, there is a demand for a technique that can further reduce the standby time required for adjusting the operating conditions in the optical disc apparatus.

  In the case of using the technique described in Patent Document 1, in order to read information recorded on the optical disc with the optical disc apparatus, it is necessary to adjust the operating conditions first. The optical disc apparatus first performs temporary adjustment of the operating condition, reads the adjustment value of the operating condition from the optical disc, and performs the main adjustment of the operating condition using the read adjustment value. In this way, there is a problem that adjustment of the operating conditions is troublesome twice and the standby time cannot be effectively shortened. In addition, appropriate operating conditions of the optical disc apparatus are not only different depending on individual optical discs, but also differ depending on individual optical disc devices. In the technique described in Patent Document 1, the adjustment value of the operating condition recorded on the optical disc is an appropriate value for the optical disc, but is not necessarily an appropriate value for the optical disc apparatus. There is a problem that there is a possibility that the waiting time required for the operation cannot be shortened.

  Further, when an optical disc having a plurality of data recording layers is handled by the technique described in Patent Document 2, it is necessary to store adjustment values for each of the plurality of data recording layers in the host computer. Since the optical disk apparatus normally handles a plurality of optical disks, the host computer stores adjustment values relating to a plurality of data recording layers for each of the plurality of optical disks. For this reason, it is necessary for the host computer to have a large amount of memory, and there is a problem that the cost of a system that handles optical disks increases.

  The present invention has been made in view of such circumstances, and the object of the present invention is to record adjustment values of operating conditions related to other data recording layers on one data recording layer on an optical disc, An object of the present invention is to provide an optical disc apparatus capable of reliably shortening the standby time and suppressing an increase in cost when handling an optical disc having a plurality of data recording layers, and an optical disc used in the optical disc apparatus.

  An optical disc apparatus according to the present invention adjusts operating conditions for reading data from one data recording layer of the optical disc in an optical disc apparatus that reads or writes data from or on an optical disc having a plurality of data recording layers. Means for determining whether or not an adjustment value of an operating condition for reading or writing data to or from another data recording layer is recorded in the one data recording layer, and the adjustment value is Means for adjusting an operating condition for reading or writing data to the other data recording layer when the determination means determines that the data is not recorded in the one data recording layer; and the adjustment value Is determined to be recorded in the one data recording layer, the other means according to the adjustment value recorded when the determination means determines Characterized in that it comprises a means for adjusting the operating conditions for reading or writing data to chromatography data recording layer.

  The optical disc apparatus according to the present invention further comprises recording means for recording an adjustment value of an operating condition for reading or writing data to or from the other data recording layer in the one data recording layer. And

  The optical disk apparatus according to the present invention further comprises means for measuring temperature, and the recording means measures the adjustment value of the operating condition for reading or writing data to the other data recording layer. And means for recording in the one data recording layer, and the determination means determines whether or not the adjustment value associated with the measured temperature is recorded in the one data recording layer. It is characterized by having.

  In the optical disc apparatus according to the present invention, the recording means associates an adjustment value of an operating condition for reading or writing data with respect to the other data recording layer in association with identification information for identifying itself. Means for recording in a data recording layer, and the determination means has means for determining whether or not the adjustment value associated with identification information for identifying itself is recorded in the one data recording layer. It is characterized by.

  An optical disc according to the present invention includes an adjustment value of an operating condition for an optical disc apparatus to read or write data from one data recording layer to another data recording layer in an optical disc having a plurality of data recording layers. It is recorded.

  The optical disk according to the present invention is characterized in that a part or all of the other data recording layer is read-only.

  The optical disk according to the present invention is characterized in that the adjustment value is recorded in association with temperature.

  The optical disk according to the present invention is characterized in that the adjustment value is recorded in association with identification information for identifying an optical disk device.

  In the present invention, an optical disc apparatus that reads or writes data from or to an optical disc having a plurality of data recording layers reads or writes data from one data recording layer to another data recording layer. The adjustment value of the operation condition for performing is read, and the operation condition is adjusted using the read adjustment value. Since the adjustment value recorded in one data recording layer is used to adjust the operating conditions for reading or writing data to other data recording layers, the optical disc apparatus is used to adjust the operating conditions. The required waiting time can be reliably shortened.

  In the present invention, the optical disc apparatus records the adjustment value of the operating condition for reading or writing data with respect to each data recording layer of the optical disc on one data recording layer of the optical disc. As a result, adjustment values suitable for the optical disk and the optical disk device are recorded. When the same optical disk is used again, the optical disk device is necessary for adjusting the operating conditions using the recorded adjustment values. The waiting time can be reliably shortened.

  In the present invention, the optical disk device measures the internal temperature, records the adjustment value of the operating condition on the optical disk in association with the temperature, and uses the adjustment value recorded in association with the temperature range including the current temperature. Adjust the operating conditions. Although the optimum operating condition varies depending on the temperature in the optical disk device, the adjustment value associated with the temperature is recorded on the optical disk, so that the optical disk device can reduce the waiting time necessary for adjusting the operating condition suitable for the temperature. It can be shortened.

  In the present invention, the optical disk device records the adjustment value of the operating condition on the optical disk in association with identification information for identifying each optical disk device, and uses the adjustment value recorded in association with its own identification information, Adjust the operating conditions. Although the optimum operating conditions differ depending on the individual optical disk device, the adjustment value associated with the identification information of each optical disk device is recorded on the optical disk. The device can reduce the waiting time required to adjust the operating conditions.

  In the present invention, the data recording layer of the optical disc includes a read-only data recording layer. Data such as a program is recorded in the read-only data recording layer, and the host device of the optical disc apparatus can perform data processing using the data such as the program.

  In the present invention, an optical disc apparatus that handles an optical disc having a plurality of data recording layers can reliably reduce the waiting time required for adjusting the operating conditions. It is possible to shorten the waiting time until the writing is started. In particular, even when an optical disc having a large number of data recording layers is handled, the optical disc apparatus can shorten the standby time. Therefore, according to the present invention, it is possible to reduce the stress of the user due to the long standby time. In the present invention, since the adjustment value of the operating condition of the optical disk apparatus is recorded on the optical disk, the optical disk apparatus and the host device of the optical disk apparatus do not need a memory for storing the adjustment value. Therefore, according to the present invention, the present invention is excellent in that it is possible to suppress an increase in the cost of the optical disk device and the host device of the optical disk device while shortening the standby time required for adjusting the operating conditions of the optical disk device. Has an effect.

1 is a block diagram showing an internal configuration of an optical disc device according to Embodiment 1. FIG. 1 is a schematic diagram illustrating a configuration of an optical disc according to Embodiment 1. FIG. It is a schematic diagram which shows the structure of RE layer. 6 is a flowchart showing a procedure at the start of data processing using the optical disc executed by the optical disc apparatus according to the first embodiment. 5 is a flowchart showing a procedure at the end of data processing using the optical disc executed by the optical disc apparatus according to the first embodiment. 6 is a block diagram showing an internal configuration of an optical disc device according to Embodiment 2. FIG. 12 is a conceptual diagram illustrating an example of recorded contents of an adjustment value recording area according to Embodiment 2. FIG. 10 is a flowchart showing a procedure at the start of data processing using an optical disc executed by the optical disc apparatus according to the second embodiment. 10 is a conceptual diagram illustrating an example of recorded contents of an adjustment value recording area according to Embodiment 3. FIG. 10 is a flowchart showing a procedure at the start of data processing using an optical disc executed by the optical disc apparatus according to the third embodiment. FIG. 6 is a schematic diagram showing a configuration of an optical disc according to a fourth embodiment. FIG. 10 is a conceptual diagram illustrating an example of recorded contents of an adjustment value recording area according to a fourth embodiment. 10 is a flowchart showing a procedure at the start of data processing using an optical disc executed by an optical disc apparatus according to Embodiment 4;

Hereinafter, the present invention will be specifically described with reference to the drawings showing embodiments thereof.
(Embodiment 1)
FIG. 1 is a block diagram showing an internal configuration of the optical disc apparatus according to the first embodiment. An optical disk device 1 of the present invention is an optical disk drive that reads and writes data from and to a removable optical disk 2 and is configured to be built in or connected to a host device such as an AV device, a game machine, or a PC. . The optical disk device 1 includes a processing unit 11 that executes various kinds of information processing such as operation control of the entire optical disk device 1 and processing of data read from the optical disk 2, and the processing unit 11 includes a CPU or a DSP. ing. The processing unit 11 is connected to a working memory 15 that stores temporary data associated with information processing, and a non-volatile memory 16 that stores various programs and data necessary for executing the information processing. . The working memory 15 is composed of, for example, a DRAM, and the nonvolatile memory 16 is composed of, for example, a flash memory. The processing unit 11 is connected to an interface unit 14 for inputting / outputting data, and is further connected to a pickup 12 and a driving unit 13.

  The optical disc apparatus 1 includes a tray or slot-in mechanism (not shown) that can be inserted and removed, and is configured such that the optical disc 2 can be mounted using the tray or slot-in mechanism. The drive unit 13 drives the optical disc 2 mounted using a spindle motor or the like. The pickup 12 irradiates the optical disc 2 with laser light, and reads and writes data from and on the optical disc 2. The interface unit 14 is connected to a host processing system 3 that is a host data processing system in a host device in which the optical disk device 1 is built in, or a host processing system 3 that is a data processing system in an external host device to which the optical disk device 1 is connected. Connected. The interface unit 14 receives various processing instructions such as a data reading instruction and data to be written to the optical disk 2 from the host processing system 3, and outputs the data read from the optical disk 2 to the host processing system 3.

  The optical disc apparatus 1 according to the present embodiment can handle an optical disc 2 having two data recording layers. FIG. 2 is a schematic diagram showing a configuration of the optical disc 2 according to the first embodiment. The optical disc 2 has a two-layer structure, and as a two-layer data recording layer, an RE (Rewritable) layer 21 capable of writing and rewriting data, and a read-only ROM (Read Only Memory) layer 22 are provided. Have The ROM layer 22 has data recorded in advance, and the recorded data cannot be rewritten. Note that the RE layer 21 may be a data recording layer in which data can be written but cannot be rewritten. Various programs or data are recorded in the ROM layer 22, and arbitrary data can be recorded in the RE layer 21. For example, the optical disk 2 is an optical disk for movies, movie content data is recorded in the ROM layer 22, and user comments on the movie are recorded in the RE layer 21. Further, for example, the optical disc 2 is a game optical disc, a game program is recorded in the ROM layer 22, and game save data is recorded in the RE layer 21. Further, for example, the optical disc 2 is an optical disc for learning type program, a learning type program is recorded in the ROM layer 22, and learning content data is recorded in the RE layer 21.

  Thus, by using the optical disc 2 having the RE layer 21 and the ROM layer 22, the host device of the optical disc apparatus 1 can perform data processing using data or a program recorded in the ROM layer 22, and Related data can also be recorded. The host device does not necessarily include a storage means such as a hard disk for storing data or a program necessary for data processing or data related to data processing. Therefore, it is possible to simplify the structure of the host device and reduce the cost of the host device while maintaining the function of executing data processing. In addition, by using the same optical disk 2 in a plurality of optical disk apparatuses 1, it is possible to execute the same data processing in a plurality of host apparatuses without accompanying a copy of data or a program.

  FIG. 3 is a schematic diagram showing the configuration of the RE layer 21. The RE layer 21 includes an adjustment value recording area 23 that is an area for recording adjustment values of operating conditions of the optical disc apparatus 1 for reading data recorded in the ROM layer 22 by the optical disc apparatus 1. For example, in the adjustment value recording area 23, control signal values for various components for adjusting the output of the laser included in the pickup 12, adjusting the focus, adjusting the tracking, adjusting the aberration of the laser beam, and the like are adjusted values. As recorded. The adjustment value recording area 23 is provided in a predetermined address range in the RE layer 21. The unused optical disk 2 may be in a form in which no data is recorded in the adjustment value recording area 23, and some initial value is recorded in the adjustment value recording area 23 as an adjustment value of the operating condition of the optical disk apparatus. It may be. When the RE layer 21 is a data recording layer in which data cannot be rewritten, the unused optical disc 2 is in a form in which no data is recorded in the adjustment value recording area 23.

  Next, the operation of the optical disc apparatus 1 that handles the optical disc 2 having two data recording layers will be described. FIG. 4 is a flowchart showing a procedure at the start of data processing using the optical disc 2 executed by the optical disc apparatus 1 according to the first embodiment. When the optical disk device 1 is loaded with an optical disk 2 using a tray insertion / removal or slot-in mechanism (not shown), or when an instruction to start data processing is input from the host processing system 3 through the interface unit 14, data Start processing. The processing unit 11 starts a process of rotating the optical disc 2 to the drive unit 13 and adjusts operating conditions for reading and writing data to the RE layer 21 of the optical disc 2 (S11). The adjustment result in step S11 is stored in the work memory 15. After the adjustment of the operating conditions is completed, the processing unit 11 reads data from the adjustment value recording area 23 included in the RE layer 21 of the optical disc 2 using the pickup 12 (S12). Next, the processing unit 11 determines whether or not the adjustment value of the operating condition for reading data from the ROM layer 22 is recorded in the adjustment value recording area 23 (S13). In step S13, the determination is made by determining whether or not the data read from the adjustment value recording area 23 is an adjustment value. The optical disc apparatus 1 determines whether or not the adjustment value of the operating condition is recorded in the RE layer 21 based on data read from a portion other than the adjustment value recording area 23 of the optical disc 2 such as data indicating the type of the optical disc 2. The form which performs the process which determines these may be sufficient.

  If an adjustment value is recorded in the adjustment value recording area 23 in step S13 (S13: YES), the processing unit 11 reads the adjustment value from the adjustment value recording area 23, and uses the read adjustment value to read the adjustment value. The operating conditions for reading data from the layer 22 are adjusted (S14). In step S <b> 14, the processing unit 11 may perform processing for adjusting the operating condition to the read adjustment value, or may perform processing for finely adjusting the operating condition using the read adjustment value as the initial value of the operating condition. Good. If no adjustment value is recorded in the adjustment value recording area 23 in step S13 (S13: NO), the processing unit 11 adjusts the operating condition of the optical disc apparatus 1 for reading data from the ROM layer 22. (S15). The adjustment result in step S14 or S15 is stored in the work memory 15. After step S14 or S15 is completed, the processing unit 11 starts reading data from the ROM layer 22 or reading or writing data to the RE layer 21 (S16), and ends the process at the start of data processing. To do.

  FIG. 5 is a flowchart showing a procedure at the end of data processing using the optical disc 2 executed by the optical disc apparatus 1 according to the first embodiment. The optical disc apparatus 1 executes processing for ending data processing when an instruction to end data processing or an instruction to eject the optical disc 2 is input from the host processing system 3 via the interface unit 14. The processing unit 11 uses the pickup 12 to read data from the adjustment value recording area 23 included in the RE layer 21 of the optical disc 2 (S21). Next, the processing unit 11 determines whether or not the adjustment value of the operating condition for reading data from the ROM layer 22 is recorded in the adjustment value recording area 23 (S22). When the adjustment value is recorded in the adjustment value recording area 23 (S22: YES), the processing unit 11 stores the current adjustment value, that is, the adjustment value stored in the work memory 15, in the adjustment value recording area 23. By writing, the operating condition of the optical disc apparatus 1 is updated (S23). Note that the processing unit 11 may perform a process of canceling the writing of the adjustment value when the adjustment value recorded in the adjustment value recording area 23 is equal to the current adjustment value in step S23. Moreover, the process part 11 may receive the instruction | indication whether the adjustment value is updated from a user in step S23, and may update an adjustment value or stop update according to an instruction | indication. Further, in step S23, the processing unit 11 may update the adjustment value every time the data processing is completed a predetermined number of times, and may perform a process of canceling the update in other cases.

  If no adjustment value is recorded in the adjustment value recording area 23 in step S22 (S22: NO), the processing unit 11 sets the operation condition of the optical disc apparatus 1 for reading data from the ROM layer 22 as the RE layer. 21 is recorded in the adjustment value recording area 23 (S24). After step S23 or S24 is completed, the processing unit 11 ends the data processing using the optical disc 2 (S25). For example, in step S25, the processing unit 11 performs a process of ejecting the optical disc 2.

  As described above in detail, in the present embodiment, adjustment values for the operating conditions of the optical disc apparatus 1 are recorded in the RE layer 21 of the optical disc 2, and the optical disc apparatus 1 reads out and reads the adjustment values from the optical disc 2. Using the adjustment value, the operating condition for reading data from the ROM layer 22 is adjusted. By adjusting the operating condition using the adjustment value recorded in advance, the optical disc apparatus 1 can surely shorten the standby time required for adjusting the operating condition to read data from the ROM layer 22. Also, the optical disc apparatus 1 according to the present embodiment records adjustment values of operating conditions for reading data from the ROM layer 22 on the optical disc 2 when the data processing using the optical disc 2 is finished. As a result, adjustment values of operating conditions suitable for the optical disc 2 and the optical disc apparatus 1 are stored. When the same optical disc 2 is used again, the optical disc apparatus 1 can reliably reduce the waiting time required for adjusting the operating conditions using the recorded adjustment value. As described above, the optical disc apparatus 1 of the present invention can shorten the waiting time until data reading or writing is started with respect to the optical disc 2 having a plurality of data recording layers. Therefore, according to the present invention, it is possible to reduce the stress of the user due to the long standby time.

  In the present invention, since the adjustment value of the operating condition of the optical disk apparatus 1 is recorded on the optical disk 2, it is not necessary to store the adjustment value in the optical disk apparatus 1 or in the host device of the optical disk apparatus 1. For this reason, the optical disk device 1 and the host device do not need a memory for storing adjustment values of the operating conditions of the optical disk device 1. Therefore, according to the present invention, it is possible to suppress an increase in the cost of the optical disk device 1 and the host device of the optical disk device 1 while shortening the standby time required for adjusting the operating condition of the optical disk device 1. Further, when the optical disk 2 is reused by a plurality of optical disk apparatuses 1, the standby time can be shortened regardless of which optical disk apparatus 1 uses the optical disk 2.

  In the present embodiment, the optical disc 2 is shown as having the RE layer 21 and the ROM layer 22, but the optical disc 2 according to the present invention may be both RE layers. The optical disc 2 having two RE layers has an adjustment value recording area 23 in one RE layer, and the adjustment value recording area 23 is an optical disc apparatus 1 for reading and writing data to and from the other RE layer. Record the adjustment value of the operating condition. The optical disc apparatus 1 loaded with the optical disc 2 adjusts the operating condition for one RE layer in step S11, and adjusts the operating condition for the other RE layer in step S14 or S15. In this embodiment, the optical disc apparatus 1 uses the adjustment value recorded in one RE layer to adjust the operating conditions for reading and writing data to the other RE layer. As described above, also in this embodiment, the optical disc apparatus 1 can surely shorten the standby time required for adjusting the operating conditions. In the case of an optical disc in which both layers are RE layers, adjustment values of operating conditions relating to other RE layers may be recorded in all RE layers. When this optical disc is used, the optical disc apparatus 1 can acquire adjustment values for operating conditions related to other RE layers by reading data from an arbitrary RE layer.

(Embodiment 2)
FIG. 6 is a block diagram showing an internal configuration of the optical disc apparatus 1 according to the second embodiment. The optical disc apparatus 1 includes a temperature measuring unit 17 that measures the temperature in the optical disc apparatus 1. The temperature measurement unit 17 is configured using a temperature sensor such as a thermistor or a thermocouple. Other configurations in the optical disc apparatus 1 are the same as those in the first embodiment, and the corresponding parts are denoted by the same reference numerals and description thereof is omitted. The optical disc 2 includes an RE layer 21 and a ROM layer 22, and the configuration is the same as that of the first embodiment. The optical disc 2 may be configured by two RE layers.

  FIG. 7 is a conceptual diagram showing an example of recorded contents of the adjustment value recording area 23 according to the second embodiment. The adjustment values of the operating conditions of the optical disc apparatus 1 are recorded in association with the temperature ranges of less than 0 ° C., 0 ° C. or more and less than 50 ° C., 50 ° C. or more and less than 100 ° C., and 100 ° C. or more. The optimum operating condition of the optical disc apparatus 1 for enabling reading or writing of data with respect to the optical disc varies depending on the temperature. Therefore, an adjustment value of an appropriate operating condition is recorded in association with each temperature range. .

  FIG. 8 is a flowchart showing a procedure at the start of data processing using the optical disc 2 executed by the optical disc apparatus 1 according to the second embodiment. The processing unit 11 of the optical disc apparatus 1 starts a process of rotating the optical disc 2 to the drive unit 13 and adjusts operating conditions for reading and writing data to the RE layer 21 of the optical disc 2 (S31). . After the adjustment of the operating conditions is completed, the processing unit 11 reads data from the adjustment value recording area 23 included in the RE layer 21 of the optical disc 2 using the pickup 12 (S32). Next, the processing unit 11 receives the signal indicating the temperature measured by the temperature measurement unit 17 from the temperature measurement unit 17 to measure the temperature in the optical disc apparatus 1 (S33). Next, the processing unit 11 determines whether or not the adjustment value of the operating condition associated with the temperature range including the temperature measured by the temperature measurement unit 17 is recorded in the adjustment value recording area 23 (S34). In step S34, the determination is made by determining whether or not the data read from the adjustment value recording area 23 has an adjustment value associated with the temperature range including the measured temperature.

  When the adjustment value associated with the temperature range including the measured temperature is recorded in step S34 (S34: YES), the processing unit 11 reads the adjustment value from the adjustment value recording area 23 and reads the read adjustment. The operating condition for reading data from the ROM layer 22 is adjusted using the value (S35). If the adjustment value associated with the temperature range including the measured temperature is not recorded in step S34 (S34: NO), the processing unit 11 reads the data from the ROM layer 22 for the optical disc device 1 Are adjusted (S36). After step S35 or S36 is completed, the processing unit 11 starts reading data from the ROM layer 22 or reading or writing data to the RE layer 21 (S37), and ends the process at the start of data processing. To do.

  At the end of the data processing, the processing unit 11 of the optical disc apparatus 1 determines whether or not the adjustment value of the operating condition associated with the temperature range including the measured temperature is recorded in the adjustment value recording area 23 in step S22. judge. When the adjustment value associated with the temperature range including the measured temperature is recorded, the processing unit 11 updates the adjustment value associated with the temperature range including the measured temperature in step S23. When the adjustment value associated with the temperature range including the measured temperature is not recorded, the processing unit 11 stores the adjustment value recording area 23 in the adjustment value recording area 23 in association with the temperature range including the measured temperature in step S24. A process of recording the current adjustment value related to the layer 22 is performed. In the optical disc 2 in which both layers are RE layers, adjustment of the operating conditions of the optical disc apparatus 1 for reading and writing data to and from the adjustment value recording area 23 provided in one RE layer is performed. Record the value by temperature range.

  As described above in detail, in the present embodiment, the adjustment value of the operating condition of the optical disc apparatus 1 is recorded on the optical disc 2 for each temperature range, and the optical disc apparatus 1 is associated with the temperature range including the current temperature. Use the adjustment value to adjust the operating conditions. Although the optimum operating condition varies depending on the temperature in the optical disc apparatus 1, the optical disc apparatus 1 is necessary for adjusting the operating condition suitable for the temperature by recording the adjustment value of the operating condition in association with the temperature. The waiting time can be shortened.

(Embodiment 3)
Embodiment 3 shows a mode in which adjustment values for operating conditions are recorded on an optical disc 2 for each optical disc apparatus 1. The configuration of the optical disc apparatus 1 according to the present embodiment is the same as that of the first or second embodiment. However, the optical disk device 1 according to the present embodiment stores a device ID (identification information) for identifying the optical disk device 1 itself in the nonvolatile memory 16. The device ID is information unique to each optical disc device 1, such as a manufacturing number or a serial number.

  FIG. 9 is a conceptual diagram showing an example of recorded contents of the adjustment value recording area 23 according to the third embodiment. .. Are recorded in association with device IDs for identifying each of the plurality of optical disk devices 1 of device A, device B,... The optical disk apparatuses 1 of different manufacturers or models have different structures, and even in the optical disk apparatus 1 of the same model, the appropriate operating conditions are individually different. Therefore, the adjustment values of the operating conditions are different for each optical disk apparatus 1. In the present embodiment, the adjustment value recording area 23 records adjustment values of operating conditions relating to each of the optical disc apparatuses 1 that have used the optical disc 2 in the past. Note that the adjustment value related to each optical disc apparatus 1 may be recorded in association with the temperature range as in the second embodiment.

  FIG. 10 is a flowchart showing a procedure at the start of data processing using the optical disc 2 executed by the optical disc apparatus 1 according to the third embodiment. The processing unit 11 of the optical disc apparatus 1 starts processing to rotate the optical disc 2 to the drive unit 13 and adjusts operating conditions for reading and writing data to the RE layer 21 of the optical disc 2 (S41). . Next, the processing unit 11 reads data from the adjustment value recording area 23 included in the RE layer 21 of the optical disc 2 using the pickup 12 (S42). Next, the processing unit 11 reads the device ID of the optical disc device 1 stored in the nonvolatile memory 16 (S43). Next, the processing unit 11 determines whether or not the adjustment value of the operating condition associated with the read device ID is recorded in the adjustment value recording area 23 (S44). In step S44, the determination is made by determining whether the data read from the adjustment value recording area 23 has an adjustment value associated with the read device ID.

  When the adjustment value associated with the read device ID is recorded in step S44 (S44: YES), the processing unit 11 reads the adjustment value from the adjustment value recording area 23 and uses the read adjustment value. The operating conditions for reading data from the ROM layer 22 are adjusted (S45). When the adjustment value associated with the read device ID is not recorded in step S44 (S44: NO), the processing unit 11 sets the operating condition of the optical disc device 1 for reading data from the ROM layer 22. Adjust (S46). After step S45 or S46 is completed, the processing unit 11 starts reading data from the ROM layer 22 or reading or writing data to the RE layer 21 (S47), and ends the process at the start of data processing. To do.

  At the end of the data processing, the processing unit 11 of the optical disc apparatus 1 determines whether or not the adjustment value of the operating condition associated with the device ID of the optical disc apparatus 1 is recorded in the adjustment value recording area 23 in step S22. . When the adjustment value associated with the device ID is recorded, the processing unit 11 updates the adjustment value associated with the device ID in step S23. If the adjustment value associated with the device ID is not recorded, the processing unit 11 stores the current adjustment value related to the ROM layer 22 in association with the device ID of the optical disc device 1 in the adjustment value recording area 23 in step S24. The process of recording is performed. In the optical disc 2 in which both layers are RE layers, adjustment of the operating conditions of the optical disc apparatus 1 for reading and writing data to and from the adjustment value recording area 23 provided in one RE layer is performed. The value is recorded in association with the device ID.

  As described above in detail, in the present embodiment, the adjustment value of the operating condition of the optical disk device 1 is recorded on the optical disk 2 in association with the device ID unique to each optical disk device 1, and the optical disk device 1 itself The operating condition is adjusted using the adjustment value associated with the device ID. When the optical disk 2 is reused by a plurality of optical disk devices 1, the optical disk 2 records the adjustment value of the operating condition of each optical disk device 1 in association with the device ID of each optical disk device 1. For this reason, the adjustment value of the optimum operating condition for each optical disc apparatus 1 is stored in the optical disc 2. When the same optical disk 2 is used a plurality of times by the same optical disk apparatus 1, the optical disk apparatus 1 is necessary for adjusting the operating conditions using the adjustment value recorded in association with the apparatus ID for the second time and thereafter. The waiting time can be shortened. As described above, in each of the plurality of optical disk apparatuses 1 using the same optical disk 2, it is possible to shorten the waiting time until data reading or writing to the optical disk 2 is started.

(Embodiment 4)
In the fourth embodiment, the optical disk 2 has a number of data recording layers. FIG. 11 is a schematic diagram showing a configuration of the optical disc 2 according to the fourth embodiment. The optical disc 2 has a (m + n) layer structure where m and n are real numbers, and has RE layers 211, 212,..., 21n and ROM layers 221, 222,. ing. The RE layer 211 includes an adjustment value recording area 23 that is an area for recording an adjustment value of an operating condition of the optical disc apparatus 1 for reading or writing data with respect to a data recording layer other than the RE layer 211. Yes. The configuration of the optical disc apparatus 1 that handles the optical disc 2 according to the present embodiment is the same as that of the first or second embodiment.

  FIG. 12 is a conceptual diagram illustrating an example of recorded contents of the adjustment value recording area 23 according to the fourth embodiment. Adjustment of the operating conditions of the optical disc apparatus 1 for reading or writing data from / to each data recording layer in association with information indicating the RE layers 212,..., 21n and the ROM layers 221, 222,. The value is recorded. Since the operating conditions of the optical disc apparatus 1 for enabling reading or writing of data with respect to each data recording layer are different for each data recording layer, it is necessary to record the adjustment value of the operating condition for each data recording layer. The adjustment value for each data recording layer may be recorded in association with the temperature range as in the second embodiment. Further, the adjustment value for each data recording layer may be recorded in association with the device ID of the optical disc device 1 as in the third embodiment.

  FIG. 13 is a flowchart showing a procedure at the start of data processing using the optical disc 2 executed by the optical disc apparatus 1 according to the fourth embodiment. The processing unit 11 of the optical disc apparatus 1 starts processing to rotate the optical disc 2 to the drive unit 13 and adjusts operating conditions for reading and writing data to the RE layer 211 of the optical disc 2 (S51). . Next, the processing unit 11 reads data from the adjustment value recording area 23 included in the RE layer 211 of the optical disc 2 using the pickup 12 (S52). Next, the processing unit 11 adjusts the operating condition associated with the information indicating the data recording layers other than the RE layer 211, that is, the RE layers 212,..., 21n and the ROM layers 221, 222,. Is recorded in the adjustment value recording area 23 (S53). In step S <b> 53, the determination is performed by determining whether the data read from the adjustment value recording area 23 has an adjustment value associated with information indicating each of the data recording layers other than the RE layer 211.

  When the adjustment value associated with the information indicating each of the data recording layers other than the RE layer 211 is recorded in step S53 (S53: YES), the processing unit 11 relates to the other data recording layers. The adjustment value is read from the adjustment value recording area 23, and the read adjustment value is used to adjust the operating condition for reading or writing data to each of the other data recording layers (S54). When the adjustment value associated with the information indicating each of the other data recording layers is not recorded in step S53 (S53: NO), the processing unit 11 stores the data for each of the other data recording layers. The operating conditions for reading or writing are adjusted (S55). After step S54 or S55 is completed, the processing unit 11 starts reading or writing data to each data recording layer (S56), and ends the process at the start of data processing. When only the adjustment values relating to some data recording layers are recorded in the adjustment value recording area 23, the processing unit 11 reads the adjustment values read out for the data recording layer in which the adjustment values are recorded. Use to adjust the operating conditions. For a data recording layer in which no adjustment value is recorded, the processing unit 11 adjusts the operating condition without using the adjustment value.

  At the end of data processing, the processing unit 11 of the optical disc apparatus 1 determines whether or not the adjustment value of the operating condition associated with the information indicating each data recording layer is recorded in the adjustment value recording area 23 in step S22. To do. When the adjustment value associated with the information indicating each data recording layer is recorded, the processing unit 11 updates the adjustment value associated with the information indicating each data recording layer in step S23. If the adjustment value associated with the information indicating each data recording layer has not been recorded, the processing unit 11 associates each adjustment in the adjustment value recording area 23 with the information indicating each data recording layer in step S24. Process to record the value.

  As described in detail above, in the present embodiment, data is read from or written to one RE layer of the optical disc 2 having a plurality of data recording layers of two or more layers. The adjustment value of the operating condition of the optical disc apparatus 1 is recorded. The optical disc apparatus 1 reads the adjustment value from the optical disc 2 and uses the read adjustment value to adjust the operating conditions for reading or writing data to each data recording layer. For this reason, even when the optical disc apparatus 1 uses the optical disc 2 having a large number of data recording layers, it is possible to shorten the standby time required for adjusting the operating conditions to read or write data. Further, in the present embodiment, even when the optical disk 2 having a large number of data recording layers is used, the optical disk apparatus 1 and the optical disk are reduced while shortening the waiting time necessary for adjusting the operating conditions of the optical disk apparatus 1. It is possible to suppress an increase in the cost of the host device of the device 1.

  In the present embodiment, the adjustment value recording area 23 is provided in the RE layer 211 of the optical disc 2, but the present invention provides the adjustment value recording area 23 in the other RE layer of the optical disc 2. Form may be sufficient. In the present embodiment, the optical disk 2 has an n RE layer and m ROM layers. However, in the present invention, the optical disk 2 has n RE layers and has a ROM layer. The form which is not carried out may be sufficient. In the optical disc 2 of this form, adjustment values of operating conditions related to other RE layers may be recorded in all RE layers. When this optical disc is used, the optical disc apparatus 1 can acquire adjustment values for operating conditions related to other RE layers by reading data from an arbitrary RE layer. The present invention does not adjust the operating conditions of the optical disc apparatus 1 for all data recording layers of the optical disc 2 at the start of data processing, but immediately before reading or writing data to or from any data recording layer. It may be a form in which the operating conditions relating to the data recording layer are adjusted.

DESCRIPTION OF SYMBOLS 1 Optical disk apparatus 11 Processing part 12 Pickup 16 Non-volatile memory 17 Temperature measurement part 2 Optical disk 21 RE layer 22 ROM layer 23 Adjustment value recording area

Claims (8)

In an optical disc apparatus for reading or writing data to an optical disc having a plurality of data recording layers,
Means for adjusting operating conditions for reading data from one data recording layer of the optical disc;
Determining means for determining whether or not an adjustment value of an operating condition for reading or writing data to or from another data recording layer is recorded in the one data recording layer;
Means for adjusting operating conditions for reading or writing data to or from the other data recording layer when the determination means determines that the adjustment value is not recorded in the one data recording layer; ,
When the determination unit determines that the adjustment value is recorded in the one data recording layer, data is read from or written to the other data recording layer in accordance with the recorded adjustment value. An optical disc apparatus comprising: means for adjusting an operation condition for performing the operation. 2. The recording apparatus according to claim 1, further comprising: a recording unit configured to record an adjustment value of an operation condition for reading or writing data to the other data recording layer in the one data recording layer. Optical disk device. Further comprising means for measuring the temperature;
The recording means includes means for recording an adjustment value of an operating condition for reading or writing data with respect to the other data recording layer in the one data recording layer in association with the measured temperature,
The optical disc apparatus according to claim 2, wherein the determination unit includes a unit that determines whether or not the adjustment value associated with the measured temperature is recorded in the one data recording layer. The recording means is a means for recording an adjustment value of an operating condition for reading or writing data to the other data recording layer in association with identification information for identifying itself, in the one data recording layer. Have
The said determination means has a means to determine whether the said adjustment value linked | related with the identification information which identifies self is recorded on the said one data recording layer. Optical disk device. In an optical disc having a plurality of data recording layers,
An optical disc, wherein an adjustment value of an operating condition for the optical disc apparatus to read or write data from or to another data recording layer is recorded on one data recording layer.   6. The optical disc according to claim 5, wherein a part or all of the other data recording layer is read-only.   7. The optical disk according to claim 5, wherein the adjustment value is recorded in association with temperature.   8. The optical disk according to claim 5, wherein the adjustment value is recorded in association with identification information for identifying the optical disk device.

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