WO2007034811A1

WO2007034811A1 - Information recording medium

Info

Publication number: WO2007034811A1
Application number: PCT/JP2006/318593
Authority: WO
Inventors: Takeshi Koda; Masayoshi Yoshida; Eiji Muramatsu
Original assignee: Pioneer Corporation
Priority date: 2005-09-26
Filing date: 2006-09-20
Publication date: 2007-03-29

Abstract

An information recording medium (100) includes a record information area (106) for recording record information and a control information area (112) for recording control information used for controlling recording or reproduction of the record information. A push-pull signal at least in a part of the control information area has polarity reverse to the polarity of the push-pull signal in the record information area.

Description

Specification

Information recording medium

Technical field

The present invention relates to the technical field of information recording media such as optical discs.

Background art

[0002] Blu-ray Disc is being developed as a next-generation optical disc for DVD that is currently spreading. Blu-ray Discs are used for recording and playback of recording data on DVDs, and record data is recorded and played back using blue laser light having a wavelength shorter than that of red laser light. In addition, by making the pitch of the tracks formed on the recording surface smaller, Blu-ray Disc achieves a recording capacity of approximately 23 GB with a single recording layer.

[0003] Patent Document 1: Japanese Patent Application Laid-Open No. 2003-346379

Disclosure of the invention

Problems to be solved by the invention

[0004] On the other hand, development of a new version of Disc is underway from the viewpoint of reducing manufacturing costs. Specifically, a new version of a disc that uses a dye film as a recording film is being developed in contrast to the current version of a disc that uses a phase change film as a recording film. In this new version of the disc, the polarity of the push-pull signal is inverted compared to the current version of the disc.

[0005] Therefore, in addition to the conventional disc being loaded, a new disc may be loaded into an information recording device or information reproducing device. In this case, the information recording device or information reproducing device needs to determine the polarity of the tracking servo in accordance with the polarity of the push-pull signal in order to perform the tracking servo. However, when the optical disc is loaded, it is not possible to identify whether the loaded optical disc is a conventional disc or a new disc.

[0006] For this reason, it is conceivable to identify whether the loaded optical disc power is a conventional disc or a new disc by the following method. Specifically, for example, information The recording device or the information reproducing device determines the polarity of the tracking servo on the assumption that the conventional disc is loaded, and if tracking is performed with this polarity, the loaded optical disc is a conventional disc. Identify it. On the other hand, if tracking does not occur, reverse the tracking servo polarity and then perform tracking again. If tracking is performed with the reversed polarity, the loaded optical disc is identified as a new disc. . By applying tracking in this way, it is possible to identify whether the loaded optical disc is a conventional disc or a new disc. However, since it is necessary to perform tracking while reversing the polarity, there is no information recording apparatus that handles only a conventional disc, or an information reproducing apparatus that handles only a new disc, or an information reproducing apparatus that handles only a new disc. Compared to the operation, there is a technical problem that the time required for setup during loading increases.

[0007] The problem to be solved by the present invention is exemplified as described above. An object of the present invention is to provide an information recording medium that makes it possible to relatively reduce the time required for loading setup.

Means for solving the problem

In order to solve the above-described problem, the information recording medium of the present invention records a recording information area in which recording information is recorded, and control information for controlling at least one of recording and reproduction of the recording information. Control information area, and the polarity force of the push-pull signal in at least a part of the control information area is inverted compared with the polarity of the push-pull signal in the recording information area. .

[0009] According to the information recording medium of the present invention, for example, recording information including video information, music information, and other various information can be recorded in the recording information area. Then, it is possible to record control information for controlling at least one of recording and reproduction of recording information in the control information area.

[0010] It should be noted that the present invention will be described on the assumption that an information recording medium having slightly different characteristics from that of an existing information recording medium is used. Specifically, the information recording medium used in the present invention has a change in reflectance with respect to laser light used for recording information, for example, as compared with existing information recording media. And existing information recording media Compared with, the polarity of the push-pull signal obtained in the recorded information area is reversed. For this reason, when the information recording medium is loaded onto the information recording / reproducing apparatus, etc., the polarity of the push-pull signal is identified (in other words, whether the information recording medium is an existing information recording medium or new information). It is impossible to quickly identify whether the recording medium is an information recording medium (that is, an information recording medium in which the polarity of the push-pull signal is reversed! /, Such as the information recording medium according to the present invention)! The polarity of the tracking servo cannot be determined. For this reason, it is impossible to quickly track the information recording medium. In addition, the fact that tracking cannot be performed quickly leads to an increase in the time required for various setups required for recording and reproducing recorded information on a loaded information recording medium.

In the present invention, the polarity of the push-pull signal in at least a part of the area of the control information area that eliminates such inconvenience is inverted compared to the polarity of the push-pull signal in the recording information area. That is, the polarity of the push-pull signal in at least a part of the control information area is the same as the polarity of the push-pull signal in the recording information area of the existing information recording medium.

[0012] Therefore, if the information recording medium is loaded onto an information recording / reproducing apparatus or the like, tracking can be applied to the information recording medium by focusing laser light or the like on at least a part of the area. it can. In other words, if the polarity of the tracking servo is set in advance corresponding to an existing information recording medium, tracking can be quickly applied to the loaded information recording medium. In other words, it is not necessary to identify the polarity of the push-pull signal (or determine the polarity of the tracking servo) by performing tracking while inverting the polarity of the tracking servo. After that, by reading various control information including information on the polarity of the push-pull signal in the recording information area, the time required for various setups required for recording and reproduction of the recording information on the loaded information recording medium is reduced. It can be reduced relatively. As a result, it is possible to relatively reduce the time required to complete various setups necessary for recording and reproducing recorded information.

[0013] One aspect of the information recording medium of the present invention is a label in the at least part of the area portion. The arrangement relationship between the land track and the groove track is reversed compared to the arrangement relationship between the land track and the groove track in the recording information area.

[0014] According to this aspect, in at least a part of the area of the control information area, the recording track that should function as a land track functions as a groove track, and the recording track that should function as a groove track originally functions as a land track. Acts as a truck. As a result, the polarity of the push-pull signal in at least a part of the control information area can be preferably reversed as compared with the polarity of the push-pull signal in the recording information area.

[0015] In this aspect, the wobble signal is acquired from the land track in the at least some area portion, and the wobble signal is acquired from the groove track in the recording information area. Moyo!

[0016] With this configuration, in at least a part of the control information area, the recording track that should originally act as a groove track acts as a land track. A wobble signal for generating information or a clock signal can be acquired.

[0017] In another aspect of the information recording medium of the present invention, the polarity of the push-pull signal in the at least part of the area part is other area excluding the at least part of the control information area. Inverted compared to the push-pull signal polarity in the part

[0018] In this aspect, the polarity of the push-pull signal in at least a part of the area of the control information area is inverted compared to the push-pull signal in the other area part.

Therefore, the above-mentioned various benefits can be enjoyed.

[0019] In another aspect of the information recording medium of the present invention, the at least part of the area part is an area part for focusing in a laser beam irradiated for recording the recording information.

[0020] According to this aspect, the polarity of the push-pull signal in the area where the laser beam is focused in can be made the same as the polarity of the push-pull signal in the existing information recording medium, for example. Therefore, after loading the information recording medium, Can be applied. As a result, it is possible to relatively reduce the time required to complete various setups necessary for recording and reproducing recorded information.

In this aspect, the at least part of the area portion may be configured to be an area portion into which the laser beam is focused in first after the information recording medium is loaded into the drive. ,.

With this configuration, for example, the polarity of a push-pull signal in a CDZ (Control Data Zone) described later can be made the same as the polarity of a push-pull signal in an existing information recording medium, for example. For this reason, after loading the information recording medium, it is possible to quickly track the information recording medium. As a result, it is possible to relatively reduce the time required to complete various setups necessary for recording and reproducing recorded information.

In another aspect of the information recording medium of the present invention, the at least part of the area portion is an embossed portion of the control information area.

According to this aspect, for example, an emboss pit in a CDZ (Control Data Zone) described later is formed, and the polarity of the push-pull signal in the area portion is set, for example, the polarity of the push-pull signal in the existing information recording medium Can be the same. For this reason, after loading an information recording medium, tracking can be performed quickly. As a result, it is possible to relatively reduce the time required to complete various setups necessary for recording and reproducing recorded information.

[0025] Another embodiment of the information recording medium of the present invention includes a dye-based recording film.

[0026] According to this aspect, the above-described various advantages can be enjoyed with respect to the information recording medium including the dye-based recording film.

[0027] These effects and other advantages of the present invention will become more apparent from the embodiments described below.

[0028] As described above, the information recording medium of the present invention includes a recording information area and a control information area, and the polarity of the push-pull signal in at least a part of the area of the control information area is Inverted compared to the push-pull signal polarity in the recording information area. Accordingly, it is possible to relatively reduce the time required to complete various setups necessary for recording and reproducing recorded information. Brief Description of Drawings

[FIG. 1] The structure of an optical disc having a plurality of areas on the upper side is shown in a schematic plan view, and the area structure in the radial direction is shown on the lower side in association with a conceptual diagram.

FIG. 2 is a data structure diagram conceptually showing the data structure of the lead-in area and lead-out area of the optical disc in the example.

[Fig. 3] Temporary Disc Definition Structure (TDDS) recorded in the Temporary Disc Management Area (TDM A temporary Disc Management Area) provided in the lead-in area of the optical disc according to this embodiment. FIG.

[FIG. 4] conceptually shows a data structure of a temporary defect list (TDFL) recorded in a temporary disc management rear provided in the lead-in area of the optical disc according to the embodiment. It is a data structure figure.

FIG. 5 is a cross-sectional view of a new optical disc and a graph showing the tracking polarity.

FIG. 6 is a cross-sectional view of an existing optical disc and a graph showing the tracking polarity.

FIG. 7 is a graph showing the tracking polarity of the entire optical disc according to the embodiment in association with the area configuration of the optical disc.

FIG. 8 is a perspective view conceptually showing one structure of a land track and a groove track in the CDZ of the optical disc in the example.

FIG. 9 is a perspective view conceptually showing another structure of land tracks and groove tracks in the CDZ of the optical disc in the example.

FIG. 10 is a cross sectional view conceptually showing another structure of a land track and a groove track in the CDZ of the optical disc in the example.

FIG. 11 is a block diagram conceptually showing the basic structure of an information recording / reproducing apparatus in an example.

FIG. 12 is a flowchart conceptually showing a flow of data recording and reproducing operations on the optical disc in the example in the information recording / reproducing apparatus corresponding to the optical disc in the example.

[FIG. 13] This is the information recording / reproducing apparatus incompatible with the optical disc in the embodiment. 3 is a flowchart conceptually showing a flow of data recording and reproducing operations on the optical disc in the example.

FIG. 14 is a flowchart conceptually showing another flow of the data recording / reproducing operation on the optical disc in the example by the information recording / reproducing apparatus not compatible with the optical disc in the example.

Explanation of symbols

[0030] 100 optical disc

104 Lead-in area

106 Data area

108 Lead-out area

112 CDZ

200 Information recording and playback device

352 optical pickup

353 Signal recording and playback means

354, 359 CPU

GT groove track

LT Land rack

BEST MODE FOR CARRYING OUT THE INVENTION

[0031] Hereinafter, the best mode for carrying out the present invention will be described in each embodiment in order with reference to the drawings.

[0032] (1) Basic configuration

First, with reference to FIG. 1 to FIG. 4, the basic configuration of an optical disk as an embodiment according to the information recording medium of the present invention will be described. Here, FIG. 1 shows a schematic plan view of the structure of an optical disc having a plurality of areas on the upper side, and shows the area structure in the radial direction in association with the lower side in a conceptual diagram. FIG. 3 is a data structure diagram conceptually showing the data structure of the lead-in area and the lead-out area of the optical disk according to the present embodiment, and FIG. 3 is a temporary diagram provided in the lead-in area of the optical disk according to the present embodiment. Recorded in the disc management area (TDMA: Temporary Disc Management Area) FIG. 4 is a data structure diagram conceptually showing temporal disc definition structure information (TDDS: Temporary Disc Definition Structure). FIG. 4 is recorded in a temporary disc management area provided in the lead-in area of the optical disc according to the present embodiment. FIG. 2 is a data structure diagram conceptually showing a data structure of a temporary defect list (TDFL: Temporary Defect List).

As shown in FIG. 1, the optical disc 100 can be recorded by various recording methods such as a magneto-optical method and a phase change method, which can be recorded (written) multiple times or only once. As with the DVD, a lead-in area 104, a data area 106, and a read-out area 108 are provided on the recording surface of the disk body having a diameter of about 12 cm with the center hole 102 as the center and the inner peripheral force toward the outer periphery. In each area, for example, groove tracks and land tracks are alternately provided spirally or concentrically around the center hole 102, and this groove track may be wobbled. Prepits may be formed on one or both tracks. The present invention is not particularly limited to the optical disc having such three areas. For example, lead-in area 10

Even if 4 and the lead-out area 108 do not exist, the file structure described below can be constructed. Further, the lead-in area 104 and the lead-out area 108 may be further subdivided.

[0034] As shown in Fig. 2 (a), the lead-in area 104 includes a BCA (Burst Cutting Area) 111 and a specific example of the "control information area" in the present invention. CDZ (Control Data Zone) 1 12, DMA (Disc Management Area) (# 2) 113, OPC (Optimum Power Control) area (# 0) 114, TDMA (# 0) 115, DMA (# 1) 116, AC A (Access Control Area) 117, and Buffer Zone 118 are the inner peripheral side. It is provided with the power.

[0035] The BCA 111 is an area for recording various identification data for identifying the optical disc 100 including, for example, a manufacturing number of the optical disc 100 and the like. In particular, the various identification data is recorded by a barcode-like cutting pattern formed on the recording surface of the optical disc 100 by the laser beam LB.

The CDZ 112 is an optical disc 100 that constitutes a specific example of “control information” in the present invention. This is an area for recording initial management information (or basic disk information). CDZ112 is partly or entirely configured as a force embossing area. In other words, some or all of the CDZ112 has embossed pits or modulated groups, and the initial management information is recorded as all or part of the embossed pits or modulated groups. ing.

[0037] The OPC area (# 0) 114 is an area used for so-called OPC processing, which is an optimal laser power detection (ie, laser power calibration) processing when data is recorded on the optical disc 100. More specifically, after the trial writing of the OPC pattern is completed, the trial-written OPC pattern is reproduced, and the reproduced OPC pattern is sequentially sampled to detect the optimum laser power.

[0038] TDMA (# 0) 115 is an area for temporarily recording disk management information including TDDS190, TDFL191, and the like (more specifically, for example, until compatible close processing described later is performed). . More specifically, disk management information updated in accordance with data recording and reproduction is sequentially recorded in the TDMA (# 0) 115.

Here, the disk management information including TDDS 190 and TDFL 191 will be specifically described.

[0040] As shown in FIG. 3, the TDDS 190 includes TDDS identification information including an identification number for identifying the TDDS 190, the position of the lead-in area 104, the data area 106, the lead-out area 108, the ISA 119, and the like. Disc basic information indicating size, information on recording methods such as sequential recording method and random recording method, TDMA size information indicating position and size such as TDMA (# 0) 115, and OPC area (# 0) 113 OPC area information indicating the position, size, etc., TDFL position information, indicating the position, size, etc. of the TDFL191, and sequential recording methods are used.In this case, track information, session information, etc. are indicated, and random recording is performed. If the method is adopted, information related to the area where the recorded data has been recorded or information related to the area where the recorded data is not recorded, and information related to the recording mode Including various other information.

[0041] As shown in FIG. 4, the TDFL 191 is recorded or recorded at a position where the diff is present on the optical disc 100 and the position where the diff is present. It includes an alternative recording address indicating the position in the ISA119 or OSA131 where the stored data (hereinafter referred to as “evacuation data” as appropriate) is recorded, and various other information. When there are a plurality of differentials in the data area 106, the TDFL 191 includes a plurality of differential addresses corresponding to these differentials and a plurality of alternative recording addresses.

[0042] It is preferable that Ding 003190, Ding 003191, and the like are repeatedly recorded twice in TDMA (# 0) 115 from the viewpoint of ensuring their reliable recording and reproduction. However, even if it is not recorded twice, even if it is recorded once or recorded three times or more, TDDS190, TDDS191, etc. can be appropriately recorded and reproduced.

[0043] In FIG. 2 again, DMA (# 1) 116 and DMA (# 2) 113 are areas for recording disk management information including TDDS, TDFL, etc. when compatible close processing is performed. . After the compatible close process has been performed, the information recording / reproducing apparatus described later uses DMA (# 1) 116 or DMA (# 2) 113 (or DMA (# 3) 122 or DMA (# 4) 123 described later). The disc management information recorded in the data area is acquired, and the data recorded in the data area 106 is reproduced.

[0044] ACA 117 is an area for recording access control information that defines restrictions on the access area on optical disc 100, and the like.

[0045] The buffer zone 118 is an area for taking a margin between the CDZ 112 and the DMA (# 2) 113. By taking such a margin, CDZ112 and DM that have been formed in advance

A (# 2) 113 can be separated and access to both areas can be made reliably.

An ISA (Inner Spare Area) 119 is provided at the boundary between the lead-in area 104 and the data area 106. In the ISA 119, the save data is recorded as described above.

[0047] An OSA (Outer Spare Area) 131 is provided at the boundary between the data area 106 and the lead-out area 108. The OSA 131 records the evacuation data as described above.

[0048] In the OSA 131, a TDMA (# 1) 132 is provided. TDMA (# 1) 132 is TDDS 190, TDFL 191 and usage permission flag 192, similar to TDM A (# 0) 115 above. This is an area for recording disc management information including the information temporarily (more specifically, after compatible close processing has been performed).

In the lead-out area 108, DMA (# 3) 122, DMA (# 4) 123, buffer zone 124, and force are provided from the inner periphery side toward the outer periphery side.

[0050] DMA (# 3) 122 and DMA (# 4) 123 are areas for recording disk management information including TD DS, TDFL, and the like when compatible close processing is performed. After the border closing process is performed, the information recording / reproducing apparatus described later uses DMA (# 3) 122 or DMA (# 4) 123 (or the above-mentioned DMA (# 1) 116 or DMA (# 2) 113. ) Is recorded, and the data recorded in the data area 106 etc. is played back.

[0051] The buffer zone 124 is an area for taking a margin between the lead-out area 108 and the area on the outer peripheral side thereof. By taking such a margin, it is possible to prevent the optical pickup force that is matched to the lead-out area 108 from accidentally jumping out to the outer peripheral side of the lead-out area 108.

[0052] (2) Specific configuration

Next, a more specific configuration of the optical disc 100 according to the present embodiment will be described with reference to FIGS. FIG. 5 is a graph showing the cross-sectional view and tracking polarity of the data area 106 of the optical disc 100 according to the present embodiment, and FIG. 6 shows the cross-sectional view and tracking polarity of the data area of the existing optical disc. FIG. 7 is a graph showing the tracking polarity of the entire optical disc 100 according to the present embodiment in association with the area configuration of the optical disc 100, and FIG. 8 is a diagram showing the CDZ112 〖of the optical disc 100 according to the present embodiment. FIG. 9 is a perspective view conceptually showing one structure of the land track and groove track in this embodiment, and FIG. 9 is a perspective view conceptually showing another structure of the land track and groove track in the CDZ112 of the optical disc 100 according to the present embodiment. FIG. 10 is a cross-sectional view conceptually showing another structure of a land track and a groove track in the CDZ112 of the optical disc 100 according to the present embodiment. It is a diagram.

It should be noted that the optical disc 100 according to the present embodiment employs a new version of a disc using a dye film as a recording film as a specific example. On the other hand, existing phase change films are used as recording films. The version of the disc is referred to as an existing optical disc, and is distinguished in this embodiment. The difference between the tracking polarity of the optical disc 100 according to this embodiment and the tracking polarity of the existing optical disc will be described more specifically with reference to FIGS.

[0054] As shown in the upper part of FIG. 5, the optical disc 100 according to the present embodiment adopts a so-called in-groove structure (In-Groove), and the land track LT has a convex structure with respect to the groove track GT. Have. In other words, the land track LT has a convex structure, and the circular track GT has a concave structure. In the optical disc 100 according to the present embodiment, a substrate having a land track LT shape in which a portion where the groove track GT is formed is depressed, and a dye is applied on the substrate by using a spin coating method or the like. Thus, a recording film is formed. That is, the recording film is formed by the dye entering the recessed portion of the groove track GT.

By irradiating the optical disc 100 according to this embodiment with the laser beam LB, a tracking signal as shown in the lower part of FIG. 5 can be acquired.

[0056] On the other hand, as shown in the upper part of FIG. 6, the existing optical disk employs a so-called on-group structure (On-Groove), and the groove track GT has a convex structure with respect to the land track LT. ing. In other words, the land track LT has a concave structure, and the group track GT has a convex structure. By irradiating such an existing optical disc with the laser beam LB, a tracking signal as shown in the lower part of FIG. 6 can be obtained.

[0057] According to this embodiment, the tracking signal of the optical disc 100 according to this embodiment shown in the lower part of FIG. 5 is compared with the tracking signal of the existing optical disc 100 shown in the lower part of FIG. The tracking polarity of the optical disc 100 and the tracking polarity of the existing optical disc have an inverse relationship.

[0058] Since there are two types of optical discs as described above, the existing optical disc and the optical disc 100 according to the present embodiment may be loaded into the information recording / reproducing apparatus. In this case, the information recording / reproducing apparatus needs to determine the polarity of the tracking servo in accordance with the polarity of the push-pull signal in order to apply the tracking servo. However, when the optical disc is loaded, the loaded optical disc force is quickly determined whether it is an existing optical disc or the optical disc 100 according to the present embodiment. I can't identify it quickly.

[0059] For this reason, the following method can be considered to identify whether the loaded optical disc force is an existing optical disc or the optical disc 100 according to the present embodiment. Specifically, for example, the information recording / reproducing apparatus determines the polarity of the tracking servo in advance assuming that the existing optical disk is loaded, and if the tracking is performed with this polarity, the loaded optical disk is Disc. On the other hand, if the tracking is not strong, the tracking servo is reversed and then retracked. If tracking is performed with the reversed polarity, the loaded optical disk is the optical disk according to this embodiment. Is identified. By performing tracking in this way, it is possible to identify whether the loaded optical disc power is an existing optical disc or the optical disc 100 according to the present embodiment. However, since it is necessary to perform tracking while reversing the polarity, the operation of the information recording / reproducing apparatus that handles only the existing optical disk or the information recording / reproducing apparatus that handles only the optical disk 100 according to the present embodiment is compared. If the time required for setup during loading increases

V, has technical problems.

[0060] In the optical disc 100 according to the present embodiment to solve such a problem, as shown in FIG. 7, when the optical disc 100 is loaded, the CDZ112 is an area in which the laser beam LB is first focused. The polarity of the push-pull signal is the same as the push-pull signal on existing optical discs. In other words, the polarity of the push-pull signal in the CDZ112 is inverted compared with the polarity of the push-pull signal in the area other than the CDZ112.

A specific structure of the optical disc 100 for inverting the push-pull signal will be described in more detail with reference to FIG. 8 to FIG.

As shown in FIG. 8, in the CDZ112 (particularly, the embossed area), the land track LT and the groove track GT are reversed. In other words, in CDZ112 (especially in its embossed area), the recording track that should originally be configured as the groove track GT is configured as the land track LT, and the recording track that should be originally configured as the land track LT is the groove track. Configure as GT! / [0063] Specifically, a recording track to be configured as a land track LT having an original convex structure as shown in the upper part of FIG. 8 is used as a groove track GT having a concave structure as shown in the lower part of FIG. It is composed. In addition, the recording track that should be configured as a group track GT having an originally concave structure as shown in the upper part of FIG. 8 is configured as a land-and-rack LT having a convex structure as shown in the lower part of FIG. .

[0064] This is not only to reverse the concave and convex structure of the groove track GT and land track LT, but to use it as a new land track LT and groove track GT, respectively, as well as the original shape of the groove track GT (specifically, The land track LT has a wobbling mode) and the groove track GT needs to have the shape that the original land track LT should have.

[0065] To explain this more clearly, the recording track configured as a land track LT having an originally convex structure as shown in the upper part of FIG. 9 has a concave structure as shown in the lower part of FIG. It is configured as a groove track GT. Further, a recording track configured as a groove track GT having an originally concave structure as shown in the upper part of FIG. 9 is configured as a land track LT having a convex structure as shown in the lower part of FIG. In this way, in Fig. 9, the concave and convex structures of the group track GT and land track LT are reversed and used as new land track LT and groove track GT, respectively. Specifically, it can be clearly seen that the land track LT has a wobbling mode) and the groove track GT has the shape that the original land track LT should have.

A cross-sectional view of the optical disc 100 at this time is shown in FIG. According to the in-groove structure in the data area 106 etc., it is assumed that the groove track GT and the land track LT as shown in the upper part of FIG. 10 are provided. In this case, in the CDZ112 (particularly, the embossed area), as described above, the recording track that should be configured as the groove track GT that originally has the concave structure is configured as the land track LT that has the convex structure. Similarly, in the CDZ112 (particularly, the embossed area), the recording track that should originally be configured as the land track LT having a convex structure is configured as a groove track GT having a concave structure. In CDZ112 (especially its embossed area), a new groove track GT (that is, a recording track that should originally be configured as a land track LT) is used. By irradiating the laser beam LB, a wobble signal or the like is read.

[0067] (3) Data recording and reproduction mode

Next, with reference to FIG. 11 to FIG. 14, a mode of data recording and reproduction with respect to the optical disc 100 according to the present embodiment will be specifically described.

[0068] (A) Basic configuration of information recording / reproducing apparatus

First, a basic configuration of an information recording / reproducing apparatus as an embodiment of the information recording apparatus and the information reproducing apparatus of the present invention will be described with reference to FIG. FIG. 11 is a block diagram conceptually showing the basic structure of the information recording / reproducing apparatus in the example. The information recording / reproducing apparatus has a function of recording data on the optical disc 100 and a function of reproducing data recorded on the optical disc 100.

As shown in FIG. 11, the information recording / reproducing apparatus 200 includes a disc drive 301 in which the optical disc 100 is actually loaded and data is recorded and reproduced, and data recording to the disc drive 301 is performed. And a host computer 302 such as a personal computer for controlling playback!

The disc drive 301 includes an optical disc 100, a spinner motor 351, an optical pickup 352, a signal recording / reproducing unit 353, a CPU (drive control unit) 354, a memory 355, a data input / output control unit 306, and a bus 357. Has been. The host computer 302 includes a CPU 359, a memory 360, operation / display control means 307, operation buttons 310, a display panel 311, and data input / output control means 308.

The spindle motor 351 rotates and stops the optical disc 100, and operates when accessing the optical disc 100. More specifically, the spindle motor 351 is configured to rotate and stop the optical disc 100 at a predetermined speed while receiving spindle servo from a servo unit (not shown) or the like.

[0072] The optical pickup 352 includes, for example, a semiconductor laser diode, a collimator lens, an objective lens, and the like in order to perform recording and reproduction on the optical disc 100. More specifically, the optical pickup 352 irradiates the optical disc 500 with the laser beam LB at the first power as the read light during reproduction and at the second power as the write light while performing modulation while recording. . The signal recording / reproducing means 353 performs recording / reproduction with respect to the optical disc 500 by controlling the spindle motor 351 and the optical pickup 100. More specifically, the signal recording / reproducing means 353 is constituted by, for example, a laser diode driver (LD dryer) and a head amplifier. The laser diode driver generates a driving pulse, for example, and drives a semiconductor laser element provided in the optical pick-up 352. The head amplifier amplifies the output signal of the optical pick-up 352, that is, the reflected light of the laser light LB, and outputs the amplified signal.

[0074] The memory 355 includes general data processing and OPC processing in the disk drive 301 such as a buffer area for recording / reproducing data and an area used as an intermediate buffer when converted to data used by the signal recording / reproducing means 353. Used in. In addition, the memory 355 is a program for operating as a recorder device, that is, a ROM area in which firmware is stored, a buffer for temporarily storing recording / playback data, and variables necessary for the operation of the firmware program, etc. RAM area where is stored.

A CPU (drive control means) 354 is connected to the signal recording / reproducing means 353 and the memory 355 via the bus 357, and controls the entire disk drive 301 by giving instructions to various control means. Normally, the software or firmware for operating the CPU 354 is stored in the memory 355!

The data input / output control means 306 controls data input / output from the outside to the disk drive 301, and stores and retrieves data from / in the data buffer on the memory 355. A drive control command issued from the external host computer 302 connected to the disk drive 301 via an interface such as SCSI or ATAPI is transmitted to the CPU 354 via the data input / output control means 306. Similarly, recording / reproduction data is exchanged with the host computer 302 via the data input / output control means 306.

The operation Z display control means 307 is for receiving and displaying an operation instruction for the host computer 302, and transmits an instruction by the operation button 310 such as recording or reproduction to the CPU 359. Based on the instruction information from the operation Z display control means 307, the CPU 359 transmits a control command (command) to the information recording / reproducing apparatus 200 via the data input / output means 308 to control the entire disk drive 301. . Similarly, CPU 359 is connected to disk drive 301. On the other hand, it is possible to send a command requesting that the operating status be sent to the host. As a result, the operating state of the disk drive 301 during recording and playback can be grasped, so the CPU 359 displays the operating state of the disk drive 301 on the display panel 311 such as a fluorescent tube or LCD via the operation / display control means 307. Can be output.

[0078] The memory 360 is an internal storage device used by the host computer 302. For example, a ROM area in which a firmware program such as BIOS (Basic Input / Output System) is stored, an operating system, an operation of an application program, etc. The RAM area that stores the necessary variables is also configured. Also, it is not shown in the figure via the data input / output control means 308, and may be connected to an external storage device such as a node disk.

One specific example of using the disk drive 301 and the host computer 302 in combination as described above is a household device such as a recorder device that records and reproduces video. This recorder device is a device that records a video signal from a broadcast receiving tuner or external connection terminal power on a disc and outputs the video signal reproduced from the disc to an external display device such as a television. The program stored in the memory 360 is executed by the CPU 359 to operate as a recorder device. In another specific example, the disk drive 301 is a disk drive (hereinafter referred to as a drive as appropriate), and the host computer 302 is a personal computer or a workstation. The host computer 302 such as a personal computer is connected to the drive via data input / output control means 306 and 308 such as SCSI and ATAPI, and the application power such as writing software installed in the host computer 302 is controlled. To do.

Note that the “information recording / reproducing apparatus compatible with the optical disc 100 according to the present embodiment” and the “information recording / reproducing apparatus not compatible with the optical disc 100 according to the present embodiment” described above are both shown. Has the basic configuration shown in 11! The “information recording / reproducing apparatus corresponding to the optical disc 100 according to the present embodiment” and the “information recording / reproducing apparatus corresponding to the optical disc 100 according to the present embodiment” are executed on the CPU 359. The difference in operation described above is caused by different system programs (or firmware). In the following description, in order to distinguish each, the reference sign of “information recording / reproducing apparatus compatible with the optical disc 100 according to the present embodiment” is defined as 200a, and “corresponding to the optical disc 100 according to the present embodiment” is defined. Not doing The reference sign for “V, information recording and playback device” is defined as 200b.

[0081] (B) Operation overview

Next, with reference to FIG. 12 to FIG. 14, an outline of data recording and reproduction operations with respect to the optical disc 100 according to the present embodiment will be described. FIG. 12 conceptually shows the flow of data recording and reproduction operations on the optical disc 100 according to the present example in the information recording / reproducing apparatus corresponding to the optical disc 100 according to the present example. FIG. 13 is a flowchart, and conceptually shows a flow of data recording and reproduction operations with respect to the optical disc 100 according to the present embodiment in the information recording / reproducing apparatus not compatible with the optical disc 100 according to the present embodiment. FIG. 14 corresponds to the optical disk 100 according to the present embodiment. FIG. 14 shows other operations for recording and reproducing data with respect to the optical disc 100 according to the present embodiment in the information recording / reproducing apparatus. This is a flow chart that conceptually shows the flow of this.

In the present embodiment, the “information recording / reproducing apparatus not compatible with the optical disc 100 according to the present embodiment” means that the tracking polarity of the optical disc 100 according to the present embodiment is the tracking of an existing optical disc. Force capable of recognizing inversion with respect to polarity This means that the push-pull signal of the unrecorded portion of the optical disc 100 according to the present embodiment cannot be suitably detected. On the other hand, the “information recording / reproducing apparatus corresponding to the optical disc 100 according to the present embodiment” means that the tracking polarity of the optical disc 100 according to the present embodiment is reversed with respect to the tracking polarity of the existing optical disc. It means that the signal can be recognized and the push-pull signal of the unrecorded part of the optical disc 100 according to the present embodiment can be detected suitably.

Here, the explanation of the push-pull signal in the unrecorded part will be explained. Although not shown in FIG. 5 and FIG. 6, focusing on the signal level of the tracking signal, the signal level of the optical disc 100 according to the present embodiment and the existing level are related to the signal level in the recorded data portion. There is no significant difference between the signal level in the optical disc. However, with respect to the signal level in the unrecorded portion, the signal level of the optical disc 100 according to the present embodiment is much higher than the signal level of the existing optical disc. Therefore, in correspondence with the optical disc 100 according to the present embodiment, the information recording / reproducing apparatus 200b Cannot suitably detect the push-pull signal of the unrecorded portion. In other words, the push-pull signal to be detected exceeds the allowable detection range.

However, the signal level of the push-pull signal in the CDZ112 (particularly the embossed area) of the optical disc 100 according to the present embodiment is not much different from that of the existing optical disc. Therefore, even if the information recording / reproducing apparatus 200b does not support the optical disc 100 according to the present embodiment, as long as the laser beam LB is focused on the CDZ 112 of the optical disc 100 according to the present embodiment, the push-pull signal Can be suitably detected, and as a result, tracking can be suitably performed.

First, an explanation will be given on the outline of the operation of the information recording / reproducing apparatus 200a corresponding to the optical disc 100 according to the present embodiment. In the following description, it is assumed that there are three types of optical disks to be loaded: the optical disk 100 according to the present embodiment, an existing optical disk, and other optical disks.

As shown in FIG. 12, under the control of the CPU 354 or CPU 359, the LD (laser diode) in the optical pickup 352 is turned on, and the tracking servo is turned on (step S101). At this time, the laser beam LB emitted from the laser diode is focused into the CDZ of the loaded optical disc. In addition, the polarity of the tracking servo when the tracking servo is turned on is set to the polarity of the tracking servo on the existing optical disc.

Subsequently, it is determined whether or not tracking is closed under the control of the CPU 354 or the CPU 359 (step S 102).

[0088] If it is determined that the tracking is not closed (step S102: No), the information recording / reproducing apparatus 200a indicates that the loaded optical disk is an optical disk that cannot be handled by the information recording / reproducing apparatus 200a (that is, other The optical disc). As a result, under the control of CPU 354 or CPU 359, error processing including display of an error screen and ejection processing of the loaded optical disc is executed (step S106), and the data recording / reproducing operation is terminated.

On the other hand, when it is determined that the tracking is closed (step S 102: Yes), the information recording / reproducing apparatus 200a determines that the loaded optical disk is the optical disk 10 according to the present embodiment. 0 or recognized as an existing optical disc.

Subsequently, the basic disk information recorded in the embossed area in the CDZ 112 is acquired under the control of the CPU 354 or the CPU 359 (step S103). This basic disc information includes information indicating the type of the loaded optical disc. Therefore, by acquiring the basic disc information, the information recording / reproducing apparatus 200a can identify whether the optical disc is a loaded optical disc 100 according to the present embodiment or an existing optical disc.

[0091] Subsequently, under the control of the CPU 354 or CPU 359, various setup processes are executed based on the basic disk information acquired in step S103 (step S104). Specifically, for example, the polarity of the tracking servo is set. Disc basic information power If the loaded optical disc indicates that it is an existing optical disc, the information recording / reproducing apparatus 200a continues the operation without changing the polarity of the tracking servo. On the other hand, if the basic disc information indicates that the loaded optical disc is the optical disc 100 according to the present embodiment, the information recording / reproducing apparatus 200a continues the subsequent operation after reversing the polarity of the tracking servo.

Thereafter, under the control of the CPU 354 or the CPU 359, data is recorded on the loaded optical disc, or the data recorded on the loaded optical disc is reproduced (step S 105).

Subsequently, an outline of the operation of the information recording / reproducing apparatus 200b will be described in correspondence with the optical disc 100 according to the present embodiment. Here, the operation corresponding to the optical disc 100 according to the present embodiment is substantially the same as the operation of the information recording / reproducing apparatus 200a, so that the same step numbers are assigned and detailed description thereof is omitted. To do.

As shown in FIG. 13, under the control of the CPU 354 or CPU 359, the LD (laser diode) in the optical pickup 352 is turned on, and the tracking servo is turned on (step S101). At this time, the laser beam LB emitted from the laser diode is focused into the CDZ of the loaded optical disc. In addition, the polarity of the tracking servo when the tracking servo is turned on is set to the polarity of the tracking servo on the existing optical disc. [0095] Subsequently, it is determined whether or not the tracking is closed under the control of the CPU 354 or the CPU 359 (step S102). As described above, the signal level of the push-pull signal in the CDZ112 (particularly the embossed area) of the optical disc 100 according to the present embodiment is not much different from that of the existing optical disc. Therefore, in correspondence with the optical disc 100 according to the present embodiment, even in the information recording / reproducing apparatus 200b, as long as the laser beam LB is focused on the CDZ112 of the optical disc 100 according to the present embodiment, the push pull is performed. The signal can be detected favorably, and as a result, tracking can be suitably performed (that is, tracking closed).

[0096] When it is determined that the tracking is not closed (step S102: No), the information recording / reproducing device 200b is an optical disc that cannot be handled by the information recording / reproducing device 200b (that is, other). The optical disc). As a result, under the control of CPU 354 or CPU 359, error processing including display of an error screen and ejection processing of the loaded optical disc is executed (step S106), and the data recording / reproducing operation is terminated.

On the other hand, when it is determined that the tracking is closed (step S 102: Yes), the information recording / reproducing apparatus 200b determines that the loaded optical disc is the optical disc 100 according to the present embodiment or the existing optical disc. Recognize that there is.

Subsequently, the basic disk information recorded in the embossed area in the CDZ 112 is acquired under the control of the CPU 354 or CPU 359 (step S103). This basic disc information includes information indicating the type of the loaded optical disc. Therefore, by acquiring the basic disc information, the information recording / reproducing apparatus 200 can identify whether the optical disc is a loaded optical disc 100 according to the present embodiment or an existing optical disc.

Subsequently, under the control of the CPU 354 or CPU 359, it is determined whether or not the loaded optical disc is an existing optical disc (step S201). This determination is made based on the basic disk information acquired in step S103.

[0100] If the result of this determination is that the loaded optical disc is an existing optical disc (step S201: Yes), then, under the control of CPU 354 or CPU 359, In addition, various setup processes are executed based on the basic disk information acquired in step S103 (step S104).

Thereafter, data is recorded on the loaded optical disc under the control of the CPU 354 or CPU 359, or the data recorded on the loaded optical disc is reproduced (step S105).

[0102] On the other hand, when it is determined that the loaded optical disc is not an existing optical disc (that is, the optical disc 100 according to the present embodiment) (step S201: No), the processing shown in FIG. 14 is executed. Is done.

As shown in FIG. 14, first, under the control of the CPU 354 or the CPU 359, data can be recorded or reproduced on the loaded optical disc (that is, the optical disc 100 according to the present embodiment). It is determined whether or not it is possible (step S301). Here, for example, data can be recorded or reproduced based on whether or not compatible close processing (or border close processing) is performed on the optical disc 100 according to the present embodiment. It will be judged whether it is power or not.

Here, the “compatible close process” is to enable the information recording / reproducing apparatus 200b that is not compatible with the optical disc 100 according to the present embodiment to handle the optical disc 100 according to the present embodiment. It is processing. Specifically, as described above, in the optical disc 100 according to the present embodiment, the signal level in the portion where data is not recorded increases gradually from the signal level in the existing optical disc. Corresponding to the optical disc 100 according to this embodiment, when the information recording / reproducing apparatus 200b accesses an unrecorded portion of the optical disc 100 according to the present embodiment, it may cause a runaway operation. Therefore, in correspondence with the optical disk 100 according to the present embodiment, the data has been recorded so that the information recording / reproducing apparatus 200b does not access the unrecorded portion of the optical disc 100 according to the present embodiment. It is necessary to perform an area close process (in other words, a process such as a border close process). Such close processing power is a specific example of “compatible close processing” in the present embodiment.

[0105] As a result of this determination, if it is determined that data can be recorded or reproduced (step S301: Yes), the basic disk obtained in step S103 under the control of the CPU 354 or CPU 359 is used. Based on the information, various setup processes are executed. Step SI 04).

Thereafter, under the control of the CPU 354 or the CPU 359, data is recorded on the loaded optical disc, or the data recorded on the loaded optical disc is reproduced (step S105).

On the other hand, when it is determined that data cannot be recorded or reproduced (step S 301: No), the information recording / reproducing apparatus 200 b uses the loaded optical disc as the information recording / reproducing apparatus 200 b. Then, it recognizes that it is an optical disk (that is, another optical disk) that cannot be handled. As a result, under the control of the CPU 354 or CPU 359, error processing including display of an error screen and exit processing of the loaded optical disc is executed (step S106), and the data recording / reproducing operation is terminated.

As described above, in the optical disc 100 according to the present embodiment, the polarity of the push-pull signal in the CDZ 112 is inverted as compared with the polarity of the push-pull signal in the data area 106 and the like. In other words, the polarity of the push-pull signal in the CDZ112 is the same as the polarity of the push-pull signal in the existing optical disc. For this reason, when the optical disk according to the present embodiment is loaded onto the information recording / reproducing apparatus 200, tracking can be performed quickly after loading. Specifically, if the polarity of the tracking servo is set in advance so as to correspond to the existing optical disc, tracking can be performed quickly after loading. In other words, it is not necessary to identify the polarity of the push-pull signal (or to determine the polarity of the tracker servo) by applying the tracking while inverting the polarity of the tracking servo. As described above, since the tracking can be quickly performed after the optical disk is loaded, the basic disk information can be quickly acquired. As a result, the setup required for data recording and playback can be performed quickly. That is, it is possible to relatively reduce the time required for loading the optical disk and completing the setup required for data recording and reproduction.

In the above-described embodiment, the power described for the optical disc 100 as an example of the recording medium and the recorder or player related to the optical disc 100 as an example of the recording / reproducing apparatus. The present invention is not limited to the optical disc and the recorder. Other high-density recording or various recording media that support high transfer rates and their recorders or discs are also applicable to players. Is possible.

[0110] The present invention is not limited to the above-described embodiments, but can be appropriately modified within the scope of the claims and the entire specification without departing from the gist or the idea of the invention which can be read. Information recording media are also included in the technical scope of the present invention. Industrial applicability

The information recording medium according to the present invention can be used as an information recording medium that makes it possible to relatively reduce the time required for loading setup, such as an optical disk.

Claims

The scope of the claims

[1] Recording information area where recording information is recorded,

A control information area for recording control information for controlling at least one of recording and reproduction of the recording information;

With

The information recording medium, wherein the polarity of the push-pull signal in at least a part of the control information area is inverted compared to the polarity of the push-pull signal in the recording information area.

[2] The arrangement relationship between the land track and the groove track in the at least a part of the area is inverted as compared with the arrangement relationship between the land track and the groove track in the recording information area. The information recording medium according to claim 1.

[3] A wobble signal is obtained from the land track in the at least some area portion,

3. The information recording medium according to claim 2, wherein the wobble signal is obtained from the groove track over the recording information area.

[4] The polarity of the push-pull signal in the at least some area part is inverted compared to the polarity of the push-pull signal in the other area parts other than the at least some area part in the control information area. The information recording medium according to claim 1, wherein the information recording medium is a recording medium.

5. The information recording according to claim 1, wherein the at least part of the area part is an area part for focusing in a laser beam irradiated for recording the recording information. Medium.

[6] The at least part of the area part is an area part into which the laser beam is focused in first after the information recording medium is loaded into the drive. The information recording medium according to item.

7. The information recording medium according to claim 1, wherein the at least part of the area portion is an embossed portion of the control information area. 8. The information recording medium according to claim 1, further comprising a dye-based recording film.