JP2005182886A - Optical disk and optical disk drive - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable test writing while avoiding the area having a degraded or defective recording film in a test writing area. <P>SOLUTION: A test writing area is provided and managed. This optical disk has a data storage area and a test writing area to be used to adjust the power of the laser used for writing, and it is also provided with a test writing control area to write and control the information about the test writing area. And this optical disk drive writes the information about the test writing area in the test writing control area provided to control the test writing area. Further, this test writing area is divided and used according to the kinds of test writing. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an optical disc and an optical disc apparatus.

  Before recording data on the optical disk, the optical disk apparatus adjusts the laser output so as to output a laser suitable for the characteristics of the optical disk and the environment in which the optical disk apparatus is used. The laser output adjustment is referred to as trial writing, and an area where trial writing can be executed is referred to as trial writing area. In general, the test writing includes two types of test writing: power test writing for adjusting the laser power and shift test writing for adjusting the light emission timing of the laser.

  The procedure will be described with reference to FIG. First, power test writing is performed. In order to determine the laser power, trial writing recording is performed using a part of the trial writing area while changing the strength of the laser power.

  Next, by reproducing the recorded place while changing the intensity of the laser power, an evaluation criterion such as a jitter value with respect to the power is obtained, and the curve 201 is obtained therefrom. A threshold value is set as a reference for ensuring reliability in data recording, and the optimum recording power is calculated with reference to the power value of the area 202 where the curve 201 satisfies the threshold value. Thereafter, shift trial writing is performed, the laser emission timing is determined with the determined laser power, and adjustment is performed so that more reliable data can be recorded. The above is an outline of general test writing.

  However, if there is a film surface deterioration / defect in the test writing area in the test writing area, for example, there is a case where an evaluation standard that satisfies the threshold value cannot be obtained (curve 203), and the power is determined. Can not be made. In this case, the test writing is executed again at another location in the test writing area, and the power is obtained again. At this time, the trial writing location to be executed in the trial writing area is arbitrarily determined on the optical disc apparatus side.

  An optical disk is roughly divided into two areas. There are a data area in which data transmitted from an external host is recorded and a non-data area for information managed internally by the optical disk apparatus.

  In the data area, in order to avoid recording data in the deterioration / defective area of the disk film surface, for example, in the DVD-RAM standard (see Non-Patent Document 1), in order to manage defects in the data area, A defect management area (DMA area (Defect Management Area)) is arranged in the non-data area, and the defect area of the data area is registered and managed in the DMA area.

  On the other hand, the non-data area includes the DMA area, a DIZ area (Disc identification zone) containing information unique to the optical disk device, a test writing area, etc., and defect management such as the data area is performed. No.

  However, with regard to the DMA area and the DIZ area, frequent rewriting does not occur, and by arranging a plurality of the same information in the non-data area, the remaining information can be referred to even when one information is destroyed. There is no consideration of managing defective areas such as those in the data area.

  For example, Japanese Patent Application Laid-Open No. 2004-133620 discloses a conventional technique for trial writing. In Japanese Patent Application Laid-Open No. 2004-260260, trial writing which is not easily affected by fluctuations in the circumference of a disk is an issue.

JP 2003-346338 A

DVD Specification for Rewritable Disc (DVD-RAM) Part1: PHISYCAL SPECIFICATIONS Version2.0 5. Information area format (PH5-41 ~)

  The trial writing area is an area where a relatively large number of rewritable discs are rewritten when a rewritable disc is used. During power trial writing, the film surface may be applied with a stronger power than the optimum laser power. This is an area where the film surface tends to deteriorate. In addition, since the optical disc apparatus arbitrarily determines where the trial writing is performed in the trial writing area, there is a possibility that the film surface location having the degradation / defect is selected and the trial writing is performed.

  Accordingly, an object of the present invention is to execute trial writing while avoiding an area where the recording film is deteriorated or defective in the trial writing area.

In order to solve the above problems, the optical disk of the present invention is as follows.
An optical disk having a data recording area and a test writing area used for test writing for adjusting the output of a laser for recording on the optical disk,
An optical disk having a trial writing management area for recording information related to the trial writing area and managing the trial writing area.

Furthermore, the optical disc is a rewritable optical disc,
Further, the optical disk has a plurality of test writing management areas and records the same information in each of the test writing management areas.

  Furthermore, the trial writing management area is an optical disc that manages the trial writing area in units of an integral multiple of a sector that is a unit of data recording.

  Further, the test writing management area is an optical disk that records the address of the test writing area or the film surface information of the disk recording surface. Further, the film surface information is an optical disk that records the state level of the film surface.

  Further, the test writing area is the test writing management area corresponding to the test writing area determined to be normal of the test writing area, or the test writing area determined to be a deterioration / defect of the test writing area. The optical disc managed in the trial writing management area corresponding to the corresponding trial writing management area or the entire trial writing area.

Also, an optical disc having an area for recording the same information in a plurality of locations,
An optical disk having an area for recording information for identifying a used place among the plurality of areas.

An optical disk having a data recording area and a test writing area used for test writing for adjusting the output of a laser for recording on the optical disk,
The test writing area is an optical disc characterized by providing each test writing area for a plurality of types of test writing. Further, the plurality of types of test writings are optical discs that are power test writing for determining the power of the laser and shift test writing for determining the light emission pattern of the laser.

The optical disk apparatus of the present invention is as follows.
There is an optical disc apparatus for recording on an optical disc having a data recording area and a trial writing area used for trial writing for adjusting the output of a laser for recording on the optical disc,
The optical disk apparatus records information related to the trial writing area in a trial writing management area provided for managing the trial writing area.

  Furthermore, the optical disk is an optical disk device that is a rewritable optical disk.

  Further, the optical disk has a plurality of trial writing management areas, and the same information is recorded in each of the trial writing management areas.

  Furthermore, the trial writing management area of the optical disk is an optical disk device that manages the trial writing area in units of an integral multiple of sectors that are data recording units.

  Furthermore, the test writing management area of the optical disk is an optical disk device that records an address of the test writing area or film surface information of a disk recording surface. Further, the film surface information is an optical disk device that records the state level of the film surface.

  Further, the test writing area is the test writing management area corresponding to the test writing area determined to be normal of the test writing area, or the test writing area determined to be a deterioration / defect of the test writing area. The optical disc apparatus is managed in the corresponding trial writing management area or the trial writing management area corresponding to all the trial writing areas.

In addition, an area for recording the same information in a plurality of locations on the optical disc is provided,
An optical disc apparatus is provided that records information for specifying an area for recording information for specifying a used place among the plurality of areas.

  There is also provided an optical disc apparatus for recording on an optical disc having a data recording area and a trial writing area used for trial writing for adjusting the output of a laser for recording on the optical disc, wherein the trial writing area comprises a plurality of types of trial writing areas. It is assumed that the optical disc apparatus is provided with each trial writing area for trial writing. Further, the plurality of types of test writing are an optical disc apparatus which is a power test writing for determining the laser power and a shift test writing for determining the laser emission pattern.

  There is also provided an optical disc apparatus for recording on an optical disc having a data recording area and a trial writing area used for trial writing for adjusting the output of a laser for recording on the optical disc, and is used for managing the trial writing area. An optical disc apparatus is provided in which a writing management area is secured and information relating to the trial writing area is recorded in the trial writing management area.

The test writing method in the optical disc apparatus of the present invention is as follows.
Before recording data, trial writing for adjusting the output of the laser for recording on the optical disk is performed in the trial writing area of the optical disk, and information about the trial writing area is used for managing the trial writing area. This is a test writing method in an optical disc apparatus that records data in an area and performs test writing based on information in the test writing management area.

  Trial writing can be performed while avoiding a film surface area having degradation or defects in the trial writing area.

  One of the features of the present invention is that a new trial writing management area is provided on the optical disc. An example is shown in FIG. FIG. 1 schematically shows the physical structure of an optical disc. A general optical disc has non-data areas 101 and 103 on the inner and outer circumferences, and a test writing area 104 exists in the non-data areas 101 and 103. In the present invention, a test writing management area 105 for managing the test writing area is provided on the optical disc in order to leave the deterioration / defect state of the recording film in the test writing area 104 as information on the optical disc.

  In this example, the above description has been made with reference to the physical structure of a general optical disc so that a specific image can be obtained. That is, in this example, the test writing area 104 and the test writing management area 105 are both provided in the non-data area 101, but this is only an example, and the test writing area 104 and the test writing management area A plurality of 105 may be provided. Further, the test writing management area may be provided anywhere from the inner circumference to the outer circumference of the disk, and is not limited to the non-data areas 101 and 103 but may be provided in the data area 102.

  Furthermore, the physical structure of the disk itself does not have to be the structure shown in FIG. However, it is assumed that one or more test writing areas 104 and one or more test writing management areas 105 exist in the optical disc, and information corresponding to the test writing area 104 is included in the test writing management area 105.

  The test writing management area 105 has a structure that includes position information indicating an address in the test writing area 104 and information that enables grasping of a film surface state at a location corresponding to the position information. For example, when the optical disc apparatus finds film surface deterioration / defect in the test writing area 104, the position information of the film surface deterioration / defect location and the film surface state information are registered in the test writing management area 105. Will be.

  As an example of a method for determining the deterioration / defect of the disk film surface, there is a method of actually performing test writing in a target sector. When the place where the trial writing is performed is a film surface having a deterioration / defect, the characteristic shown by the curve 203 is obtained and the trial writing fails. When it is assumed that the trial writing is always successful on the film surface without deterioration / defect, it is possible to determine that the sector where the test writing has failed is a film surface region with deterioration / defect. Thereby, it is possible to grasp the deterioration / defect of the test writing area in units of sectors. Since the above example is an example, the method for determining the deterioration / defect of the disk film surface in the test writing area may not be this method.

  When the deterioration / defect of the disk film surface is found, the information is registered in the trial writing management area 105. An example of the registration method is shown in FIG. FIG. 3A schematically shows the test writing area 104, and FIG. 3B schematically shows the data structure of the test writing management area 105 corresponding to the test writing area 104. 3A represents address information in the test writing area 104. Here, although FIG. 3 (a) and FIG. 3 (b) seem to be regions of the same capacity, they are only drawn to the same size for explanation, so the regions of FIG. 3 (a) and FIG. There is no need to have the same capacity.

  FIG. 4 and FIG. 5 to be described later have the same view as FIG. In the test writing area 104, when sectors 301, 302, and 303 having a deterioration / defect on the film surface are found, the addresses of the deterioration / defect sectors are shown as 304, 305, and 306 as shown in FIG. Register with. Therefore, by reading the content of FIG. 3B, it can be seen in which sector of the test writing area 104 the film surface deterioration / defect exists. In the test writing area 105 of this example, the address of the deterioration / defective area of the test writing area 104 is registered, but the contents of registration and the size of information to be registered need not be limited to this example.

  For example, when the deterioration / defect area of the trial writing area 104 is determined using the example of FIG. 2, it can be said that the place where the trial writing is successful is an area without deterioration / defect. As shown in FIG. 4A, trial writing was performed at 401, 402, 403, 404, 405, and 406, trial writing was successful at 401, 403, and 406, and trial writing failed at 402, 404, and 405. And In this case, when registering the information in FIG. 4B, not only the area where the trial writing has failed is registered as a deteriorated / defective place, but also the area where the trial writing has been successful A certain good film surface area is registered. In this example, the address information and the flag indicating the film surface state are set as one set of information, and are registered in FIG. 4B as 407 and 408. Thus, by reading the trial writing management area 105, detailed information of the trial writing area 104 can be obtained.

  Furthermore, by assigning information related to the entire area of the trial writing area 104 to the trial writing management area 105 in advance, the film surface information of all areas of the trial writing area 104 can be managed collectively. The case where the target optical disk is rewritable is taken as an example. For example, as shown in FIG. 5, it is assumed that FIG. 5 (b) possesses in advance information for the entire area of FIG. 5 (a). For an area that has never been trial-written, information indicating “unused” that has never been used is added to the address information. It is assumed that trial writing is performed from this state and the trial writing is successful in the areas 501, 503, and 506. In this case, the information indicating “unused” in the management areas 507, 509, and 512 corresponding to 501, 503, and 506 in FIG. 5B is rewritten to information indicating that the film surface is “normal”. . Similarly, when trial writing fails in the areas 502, 504, and 505, “unused” in the management areas 508, 510, and 511 corresponding to 502, 504, and 505 in FIG. Rewrite information with information indicating “deterioration / defect”.

  Of course, if test writing is executed in an area where the film surface is “normal” and the test writing fails, information indicating that the film surface is “normal” is changed to information indicating “deterioration / defect”. It can also be rewritten. This makes it possible not only to manage the film surface state in the test writing area in all areas, but also to provide a good film surface area with a track record of successful trial writing, and an unknown film surface area that has not been used yet. Thus, it is possible to distinguish the region of the film surface having a deterioration / defect that has already failed in the test writing, and the level of the film surface state can be classified. By adding information such as areas where trial writing has been successful multiple times or areas where trial writing has been attempted multiple times but still failed, it is possible to further subdivide the level of the entire trial writing area. It is possible to grasp the details of the film surface distribution.

  In the example using FIGS. 3, 4, and 5, the test writing area 104 is divided in units of sectors and the address information is registered in the test writing management area 105. However, depending on the test writing method, the test writing area 104 may be used. Is not necessarily used in units of sectors, and the address information to be registered need not be information for each sector. For example, if trial writing is performed in units of ECC blocks that are integer multiples of sectors, the address information to be registered may be registered in units of ECC blocks.

  When the film surface state of the test writing area 104 is registered in the test writing management area 105, the optical disk apparatus reads the information from the test writing management area so that the film surface state of the test writing area 104 can be grasped for each address. . Therefore, in the next trial writing, the trial writing can be performed while avoiding addresses having deterioration and defects. As a result, the possibility of trial writing failure can be greatly reduced, the reliability of trial writing is improved, and as a result, useless time due to performing trial writing again can be saved.

  The test writing management area 105 is an area for managing the film surface state of the test writing area 104, but depending on the case, there may be a case where the film surface of the test writing management area 105 itself has a deterioration or a defect. Therefore, a plurality of trial writing management areas 105 are prepared on the optical disk and all the same information is recorded, so that even if there is a film surface deterioration / defect in one area, correct information is obtained from the remaining area. It is preferable to do so. As a method of arranging the plurality of trial writing management areas 105 on the disk, there are a method of arranging a plurality of concentrated areas on a part of the disk, and a method of arranging each of them at a location distant from the disk radial position. Both the former and the latter have advantages, and when arranged as in the former, there is an advantage that it does not take time to move the optical pickup of the optical disk device to read all the test writing management areas 105. In the latter arrangement, when the disc has a defect, the trial writing management area 105 is arranged at a position distant from the disk surface, so the information in either area is affected by the defect. There is an advantage that there is a high possibility that the trial writing management area 105 becomes invalid. Of course, there is a method of reducing the possibility that the trial writing management area 105 becomes invalid by using both the former and the latter.

  However, the desired effect differs depending on the product using the optical disk device, and there are products that require the reliability of the data in the trial writing area. For devices that record real-time data, the time until recording can be started is shortened. There are also products you want to do. Therefore, in the present invention, the trial writing management area 105 to be used can be selected for each optical disk drive. Then, information that can be used to identify the position of the used test writing management area 105 (hereinafter, management area position information) is left on the disk. An explanation will be given with an example.

  For example, dedicated areas that may be used for the trial writing management area 105 on the optical disk are allocated in advance as indicated by 601, 602, 603, and 604 in FIG. Depending on the optical disk device, any of the test writing management areas 105 of 601, 602, 603, and 604 may be used. When the optical disc apparatus uses 601 and 602 as the trial writing management area 105, information indicating that the 601 and 602 are used is left in the management area position information 605. As a result, information indicating that 601 and 602 in the trial writing management area 105 are valid is left on the optical disc.

  In other words, as long as the optical disk is used in the optical disk apparatus, the film surface state of the test writing area 104 can be grasped by reading only the test writing management areas 105 of 601 and 602 existing on the inner circumference side of the disk. . In this case, it is not necessary to read the outer peripheral side of the optical disc, leading to a reduction in time until the optical disc apparatus moves to the next operation. Similarly, depending on the optical disc apparatus, there is a case where the certainty of the test writing management area 105 is desired even at the expense of the time until the next operation. In that case, all the test writing areas 601, 602, 603, and 604 may be used. Then, information indicating that the trial writing management area 105 of 601, 602, 603, 604 is used may be left in the management area position information 605.

  Here, if the structure of the trial writing management area 105 and the criteria for judging deterioration / defects on the film surface are unified in all optical disk apparatuses, the information in the trial writing management area 105 is also used in other optical disk apparatuses. Can be inherited. When an optical disc recorded by another optical disc apparatus is used, by referring to the management area position information 605, it is possible to know where the trial writing management area 105 of the optical disc is located. The film surface state information can be taken over. In addition, when it is desired to use a different test writing area 105 between the optical disk apparatus that used an optical disk last time and the optical disk apparatus that uses the optical disk this time, information is acquired from the trial writing management information in the management area position information 605 only at the beginning. After that, the trial writing management area 105 desired to be used is used, and the management area position information 605 may be rewritten correspondingly.

  As a result, it is possible to specify a trial writing management area suitable for the application for each optical disc apparatus, and by sharing the structure of the trial writing management area, the trial writing management area 105 of other optical disc apparatuses can be specified. It becomes possible to inherit information. In this example, only FIG. 6 is given as an example, and the number of the trial writing management area 105 and the management area position information 605, the arrangement location, and the like are not limited thereto.

  Furthermore, this concept is applicable not only to the trial writing management area 105 but also to an optical disc having a format for recording the same information in a plurality of locations.

  For example, there is a DMA area in a DVD-RAM disk that is an existing disk, but there are two DMA areas on the inner peripheral side and two on the outer peripheral side of the disk, and there are a total of four locations in the disk. To do. Currently, all four areas must be used in accordance with the disc standard. However, if this idea is applied, it is not necessary to use all four areas. By recording and using whether or not a location is used in the management area position information 605, a great merit is produced depending on the product.

  As an example of managing the film surface state of the test writing area 104 as a method for avoiding the deterioration / defect area of the film surface in the test writing area 104, the test writing area 104 is classified according to the type of the test writing. Depending on the type of trial writing, trial writing can be performed while avoiding an area where deterioration or defect exists, and the success rate of trial writing can be further improved. Hereinafter, a method of dividing the test writing area 104 according to the type of test writing, which is the second feature of the present invention, will be described.

  The shift trial writing is basically a trial writing after the power trial writing is completed and the laser power is adjusted to the optimum power for the disc, so it is possible to irradiate the disc film surface with excessive laser power. The nature is low. On the other hand, the power test writing is not necessarily performed with the optimum power for the disk film surface. Therefore, it can be said that the load applied to the disk film surface is different between the power test writing and the shift test writing. However, conventionally, the areas for executing the power test writing and the shift test writing are not distinguished, and two types of test writing are performed in the same test writing area.

  When performing trial shift writing, it is better to provide a special area for trial shift writing and execute trial writing in that area rather than performing trial writing on the film surface area after power trial writing. It is considered that an area where there is a high possibility of the occurrence of the shift can be avoided, and the possibility that the shift trial writing will be successful increases. Therefore, in the present invention, the trial writing area 104 is divided according to the type of trial writing, and the trial writing is executed in each trial writing dedicated area. An example is shown in FIG. FIG. 7A and FIG. 7B schematically show the test writing area 104.

  For example, as shown in FIG. 7A, the trial writing area 104 is divided into a power trial writing area 701 and a shift trial writing area 702, and power trial writing is performed in 701, and shift trial writing is performed in 702. I will do it. When the area is divided, it is not necessarily divided into two, and the test writing area 104 may be allocated in any way as shown in FIG. 7B. Even if the type of trial writing is a type of trial writing other than power trial writing and shift trial writing, the trial writing area can be divided and assigned in the same manner.

  The majority of all the examples listed above as examples are examples on the premise that there is a test writing management area on the optical disc, but the present invention can also realize the same with respect to existing optical discs. it can. In other words, if the optical disc has an area that can be used as a trial writing area and has an area that can be prepared in the same way as the trial writing management area 105, most of the embodiments described above can be realized for an existing disk. It is possible to realize the entire contents of the above-described embodiment with respect to an existing disk as long as the optical disk has an area that can be prepared with the same area as the management area position information 605.

  For example, a DVD-RAM disk is taken as an example. The physical structure of a DVD-RAM disk is schematically shown in FIG. 8, which is defined in the standard. Drive test zones 801 and 802 are separately provided for testing the optical disc apparatus in the lead-in area and lead-out area, which are non-data areas.

  In general, test writing is performed using this area. In addition, Disc identification zones 803 and 804 are also present in the lead-in area and the lead-out area as areas open to the optical disc apparatus. The Drive condition in this area is an area where arbitrary data may be written for each optical disk device. Therefore, the test write management area 105 and the management area position information 605 are secured by using this area, and the test write area. The film surface state 104 can be managed.

  However, since the disc identification zone is information unique to the optical disk device, the information written in this area is not applied to other optical disk devices. In order to share the trial writing management area 105, another area, for example, a part of the drive test zone that can be commonly referred to by all optical disc apparatuses is used, and the area is used as the trial writing management area 105 and the management area position information. This can be realized by allocating to 605 and managing the trial writing management area 105 according to a predetermined common rule.

The physical structure of the optical disk in this invention. An example of a method for determining deterioration / defect in a test writing area. 1 is a first example of a trial writing management area structure and registration method according to an embodiment of the present invention; 12 shows a trial writing management area structure and a registration method example 2 in one embodiment of the present invention. 12 shows a trial writing management area structure and a registration method example 3 in one embodiment of the present invention. The example of a trial writing management area | region and management area | region position information arrangement | positioning in one Example of this invention. 6 is an example of a test writing area segmentation method in one embodiment of the present invention. DVD-RAM disk physical structure.

Explanation of symbols

101, 103 ... non-data area, 102 ... data area, 104 ... trial writing area,
105 ... trial writing management area,
301, 302, 303 ... trial writing area,
304, 305, 306 ... trial writing management area,
401, 402, 403, 404, 405, 406 ... trial writing area,
407, 408 ... trial writing management area,
501, 502, 503, 504, 505, 506 ... trial writing area 507, 508, 509, 510, 511, 512 ... trial writing management area,
601, 602, 603, 604 ... trial writing management area,
605 ... management area position information,
701 ... Power test writing area, 702 ... Shift test writing area

Claims (22)

A data recording area;
An optical disc having a test writing area used for test writing for adjusting the output of a laser for recording on the optical disc,
An optical disc comprising a test writing management area for recording information on the test writing area and managing the test writing area. The optical disk of claim 1,
An optical disc, wherein the optical disc is a rewritable optical disc. The optical disk of claim 1,
An optical disc comprising a plurality of trial writing management areas and recording the same information in each of the trial writing management areas. The optical disk of claim 1,
The optical disc characterized in that the trial writing management area manages the trial writing area in units of integer multiples of sectors which are data recording units. The optical disk of claim 1,
The optical disc characterized in that the trial writing management area records an address of the trial writing area or film surface information of a disc recording surface. The optical disc of claim 5,
An optical disk characterized in that the film surface information records a state level of the film surface. The optical disk of claim 1,
The test writing area corresponds to the test writing management area corresponding to the test writing area determined to be normal of the test writing area, or to the test writing area determined to be a deterioration / defect of the test writing area. An optical disc managed by the trial writing management area or the trial writing management area corresponding to the whole area of the trial writing area. An optical disc having an area for recording the same information in a plurality of locations,
An optical disc comprising an area for recording information for identifying a used place among the plurality of areas. A data recording area;
An optical disc having a test writing area used for test writing for adjusting the output of a laser for recording on the optical disc,
2. The optical disc according to claim 1, wherein the test writing area is provided with a plurality of test writing areas for a plurality of types of test writing. The optical disk of claim 9, wherein
The optical disc characterized in that the plurality of types of test writing are power test writing for determining laser power and shift test writing for determining a laser emission pattern. There is an optical disc apparatus for recording on an optical disc having a data recording area and a trial writing area used for trial writing for adjusting the output of a laser for recording on the optical disc,
An optical disc apparatus, wherein information relating to the trial writing area is recorded in a trial writing management area provided for managing the trial writing area. The optical disk apparatus according to claim 11, wherein
An optical disc apparatus, wherein the optical disc is a rewritable optical disc. The optical disk apparatus according to claim 11, wherein
The optical disc has a plurality of trial writing management areas, and records the same information in each of the trial writing management areas. The optical disk apparatus according to claim 11, wherein
The optical disc apparatus, wherein the trial writing management area of the optical disc manages the trial writing area in units of an integral multiple of a sector which is a unit of data recording. The optical disk apparatus according to claim 11, wherein
The optical disc characterized in that the trial writing management area of the optical disc records an address of the trial writing area or film surface information of a disc recording surface. The optical disk apparatus according to claim 15, wherein
The optical disc apparatus characterized in that the film surface information records a state level of the film surface. The optical disk apparatus according to claim 11, wherein
The test writing area corresponds to the test writing management area corresponding to the test writing area determined to be normal of the test writing area, or to the test writing area determined to be a deterioration / defect of the test writing area. An optical disc apparatus characterized by managing in a trial writing management area or the trial writing management area corresponding to all of the trial writing areas. An area for recording the same information in multiple locations on an optical disc is provided,
An optical disc apparatus characterized by recording information for specifying an area for recording information for specifying a used place among the plurality of areas. A data recording area;
An optical disc apparatus for recording on an optical disc having a test writing area used for test writing for adjusting the output of a laser for recording on the optical disc,
The optical disc apparatus according to claim 1, wherein the trial writing area is provided for each of a plurality of types of trial writing. The optical disk of claim 19,
The optical disc apparatus characterized in that the plurality of types of test writing are power test writing for determining laser power and shift test writing for determining a laser emission pattern. There is an optical disc apparatus for recording on an optical disc having a data recording area and a trial writing area used for trial writing for adjusting the output of a laser for recording on the optical disc,
An optical disc apparatus characterized by securing a trial writing management area to manage the trial writing area and recording information related to the trial writing area in the trial writing management area. Before recording data, perform test writing in the test writing area of the optical disc to adjust the output of the laser that records on the optical disc,
Information on the trial writing area is recorded in the trial writing management area for managing the trial writing area,
A test writing method in an optical disk apparatus for performing test writing based on information in the test writing management area.

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