WO2012147117A1

WO2012147117A1 - Recording medium, address search method, and replay and recording method

Info

Publication number: WO2012147117A1
Application number: PCT/JP2011/002398
Authority: WO
Inventors: 政和池田
Original assignee: 日立コンシューマエレクトロニクス株式会社
Priority date: 2011-04-25
Filing date: 2011-04-25
Publication date: 2012-11-01

Abstract

Provided is an address structure in a recording medium having a single address layer and a plurality of recording layers. The addresses of even-numbered recording layers (layer 0, layer 2, …) are stored from the inner circumference of the address layer from the most significant bits, and the addresses of odd-numbered recording layers (layer 1, layer 3, …) are stored in an alternating fashion from the inner circumference of the address layer from the least significant bits, whereby address information can be searched from the inner circumference when recording and replaying even-numbered layers, and from the outer circumference when recording and replaying odd-numbered layers, and the search method can be shared. Therefore, control can be carried out in a simple manner.

Description

Recording medium, address detection method, reproduction and recording method

The present invention relates to a recording medium on which an address is recorded, such as an optical disc, an address detection of an optical disc, and a reproducing method and recording method for recording and reproducing data from the recording medium.

In recent years, with the increase in capacity of recording media, an optical recording medium having a plurality of recording layers in the stacking direction has been developed. In Patent Document 1, an optical recording medium in which a plurality of recording layers and one servo layer are stacked is It is disclosed. In this recording medium, a flat recording layer without a guide track (groove) is formed, and a servo layer having a guide track is formed thereon.

At the time of recording and reproduction, various servo signals are generated based on the guide track formed in the servo layer, and the address information formed on the guide track is read to specify the position on the medium.

Japanese Patent Application Publication No. 2004-217952

In a medium having a plurality of recording layers and one servo layer as disclosed in Patent Document 1, recording is performed from the innermost circumferential portion toward the outer circumferential direction with respect to the layer 0 which is adopted in the conventional multilayer optical disc. When a method (Op: Opposite Track Path) is adopted in which reproduction is performed and recording / reproduction is performed from the outermost periphery toward the inner peripheral direction with respect to layer 1 after recording / reproduction of layer 0 is completed (OTP: Opposite Track Path) If address information formed only from the innermost circumference to the outer circumference remains in consideration of reading only from the inner circumference, detection method and control are performed in order to achieve positional correlation between the address information and the address information and the recording layer. The method becomes complicated.

An object of the present invention is to provide a recording medium having an address structure that simplifies detection and control in a single layer having address information, and a recording and reproducing method.

In order to solve the above problems, a recording medium having an address structure that can be easily controlled from the inner circumference or from the outer circumference is provided.

According to the present invention, the OTP recording and reproduction scheme can be controlled from a single address structure in one servo layer.

It is a block diagram of the address detection circuit which is the 1st Example of this invention. FIG. 6 shows an ADIP address structure. It is a figure which shows the ADIP address arrangement | positioning structure and timing which are 1st Example of this invention. It is a block diagram of the address detection circuit which is the 2nd Example of this invention. It is a figure which shows the ADIP address arrangement | positioning structure and timing which are 2nd Example of this invention. (Part 1) It is a figure which shows the ADIP address arrangement | positioning structure and timing which are 2nd Example of this invention. (Part 2) It is a block diagram of the address detection circuit which is the 3rd Example of this invention. It is a figure which shows the ADIP address arrangement | positioning structure and timing which are 3rd Example of this invention. (Part 1) It is a figure which shows the ADIP address arrangement | positioning structure and timing which are 3rd Example of this invention. (Part 2) 1 is an optical disc recording and reproducing apparatus according to a first embodiment of the present invention. It is a figure which shows a disc structure.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram of an address detection circuit according to a first embodiment of the present invention. Reference numeral 101 denotes a bit replacement circuit, 102 denotes an address selection circuit, and 103 denotes an address generation circuit. In the present embodiment, in a recording medium having one servo layer and a plurality of recording layers (N: N ≧ 1, N is a natural number) as shown in FIG. 11, only the servo layer has a track structure and the grooves are incised. It is assumed that the address information is on the groove. Here, an ADIP (Address in Pre groove) address structure using wobble as address information will be described as an example. First, an ADIP structure used in DVD + RW will be described as an example using FIG. The address by wobble of the DVD + RW contains a signal by the wobble obtained by inverting the phase of the sine wave wobble by 180 ° and the phase modulation of the normal wobble, and forms ADIP address information. The wobble period is 32 T (T is a channel bit which is a basic unit of the recording mark length on the optical disc, T = 26.16 MHz in the case of DVD), and two sync frames which are data recording units recorded in the track on the disk There are 93 wobbles corresponding to. These 93 wobbles are composed of 8 phase modulation parts and 85 single wobbles, a part indicating a sync signal (SYNC) called ADIP Sync Unit including word sync, bit sync and data bit There is a portion indicating address data called ADIP Data Unit including “0” or “1”, and 52 ADIP Units constitute 1 ADIP Word. ADIP Word is contained in a proportion of one in four sectors, and one ECC block contains four ADIP addresses. In the address data portion, a total of 51 bits of 22 bits of ADIP address, 8 bits of ADIP auxiliary data, 20 bits of parity, and 1 bit of reserve are stored. In the case of the conventional two-layer disc and the OTP method, ADIP addresses are arranged in the same direction as the data recording and reproducing direction, with layer 0 from the inner periphery to the outer periphery and one layer from the outer periphery to the inner periphery. However, assuming that the groove in a single servo layer is wobbled and the ADIP address is arranged, as in the assumption of this embodiment, the recording and reproduction in the same direction as the ADIP address arrangement direction is equivalent to the conventional one. On the other hand, special processing is required in consideration of recording and reproduction in the direction opposite to the ADIP arrangement direction. This will be described using the address detection circuit of FIG. 1 and the ADIP address arrangement configuration and address detection timing diagram of FIG. 3. As in the case of DVD + RW, when the wobble length of one ADIP Word structure is equal to the data recording length for 4 sectors of data, the case where the unit recording data length is 16 sectors will be described as an example. The ADIP structure in the servo layer is arranged from the inner circumference to the outer circumference, and the even layers (layer 0, layer 2, ...) of the recording layer perform recording and reproduction from the inner circumference to the outer circumference, and the odd layers (recording layer) ..) Are described as recording and reproducing from the outer periphery to the inner periphery, the explanation will be briefly described focusing on the arrangement and detection of the ADIP address of the address data portion. In the case of recording / reproduction to the even layer, since recording / reproduction is performed from the inner periphery to the outer periphery, since it is in the same direction as the arrangement of the ADIP structure of the servo layer, the address information obtained from ADIP is correlated with It is possible to specify the recording start position of data. Since 22 ADIP addresses (most significant bit A21 and least significant bit A0) are stored per 1 ADIP Word, they are detected in the order of A21, A20, ..., A1, A0 as detection addresses in ADIP Word, The desired ADIP address can be generated by using it as it is. Similarly, since ADIP addresses are also detected in other ADIP words, consecutive addresses in increments of ADIP # (n) = X, # (n + 1) = X + 1, ... in ADIP Word units sequentially from the inner circumference It can be detected. Here, when an ADIP address with ADIP # (n) = X is detected, recording of the recording / reproducing data having a physical sector number (Physical Sector Number, PSN) = 4X in synchronization with the start position of ADIP # (n) The playback start position can be identified. In this case, in the detection circuit in FIG. 1, the detection value as it is is selected by the address selection circuit 102 and is input to the address generation circuit 103 to generate the address [A21, A20,..., A1, A0]. On the other hand, in the case of recording / reproduction to the odd layer, recording / reproduction is performed from the outer periphery to the inner peripheral direction, so the arrangement of the ADIP structure of the servo layer is in the opposite direction. Therefore, it is necessary to take measures to reverse the detected position of the detected wobble for each ADIP unit. In addition, ADIP Unit information obtained by rearranging ADIP Units also reverses the order of ADIP Units in 1 ADIP Word, and the detection addresses are in the order of A0, A1, ..., A20, A21. As it is detected, address generation is performed by replacing bit positions. In the address detection circuit in FIG. 1, the detected value is replaced by the bit replacement circuit 101 so that the most significant bit of the detection is the least significant bit of the address and the least significant bit of the detection is the most significant bit of the address. The address [A21, A20,..., A1, A0] is generated as an input to the address generation circuit 103 by selecting at 103. As a selection method in the address selection circuit 102, switching may be performed according to layer information indicating the recorded layer number. In this way, since addresses are generated, consecutive addresses are detected by decrementing ADIP # (n + 3) = X + 3, # (n + 2) = X + 2, ... in order from ADIP Word Ru. In the case of the OTP method, since it is general to use the address of bit inversion of layer 0 address with the address of layer 1 at the same radial position, ADIP # by inverting the detection address in the address generation circuit 103 A continuous address can be detected in increments of (n + 3) = ̃X-3, # (n + 2) = ̃X-2,. Here, the notation ~ indicates inversion of all bits. For example, when the address 22 bit in layer 0 is X = 00C000h, the address in the same radial position of layer 1 is ~ X = 3F3FFFh. Therefore, when an ADIP address in which ADIP # (n + 3) = ~ X-3 is detected, the head position of ADIP # (n + 3) viewed from the outer circumference [# (n + 3) viewed from the inner circumference It is possible to specify the recording / reproducing start position of the recording / reproducing data having the physical sector number = (̃4X−Fh) in synchronization with the final position of

As described above, in the present embodiment, even when the direction of the address structure arranged in the servo layer and the recording / reproducing direction are reversed at the time of recording / reproduction to the odd layer, the address detection circuit is generated by bit replacement or bit inversion. Control can be easily performed by using the address.

Also, FIG. 10 shows an example of a recording and reproducing apparatus for recording and reproducing data from an optical disc by using the address configuration and the address detection circuit described in the present embodiment. An optical disk 1001, a pickup 1002, a spindle motor 1003, an address reproducing circuit 1004, an address recording circuit 1005, a data recording / reproducing circuit 1005, an external host 1006, and a microcomputer that controls the entire system 1007 are shown. As the address generation circuit 1004, a wobble detection circuit 1008 and an address detection circuit 1009 are shown as 1008. Here, the address detection circuit 1009 is configured using the circuit described in FIG. As the data recording / reproducing circuit 1005, an RF detection circuit 1010, a decoding processing circuit 1011, a recording waveform generation circuit 1012, and an encoding processing circuit 1013 are shown. Further, as a method of recording and reproducing a signal from the optical disc 1001, as shown in FIG. 11, for example, two types of laser beams having different wavelengths are emitted in the optical pickup 1002, and each laser beam passes through the objective lens 1101 By controlling so that a laser spot is generated on the servo layer and the desired recording layer, recording and reproduction of data on the recording layer and reading of a wobble signal from the servo layer become possible. The wobble signal read from the servo layer via the pickup from the optical disk 1001 having a single servo layer and a plurality of recording layers in which physical address information is stored is input to the address reproduction circuit 1004 and the address Detect information. The wobble detection circuit 1008 performs detection of the wobble signal, generation of a clock synchronized with the wobble, etc., for example, detects ADIP address information embedded in the wobble, and is input to the address detection circuit 1009. Here, as described in FIG. 1, the address detection and generation are performed by bit replacement and inversion processing according to the reading direction of each layer, and the data recording / reproducing position on the disc is detected. On the other hand, recording and reproduction data can be performed by the same processing regardless of the reading direction of each layer as in the prior art. At the time of recording, encode processing according to a predetermined recording format is performed on the data input from the host 1006 by the encoding processing circuit 1013 to generate a recording data sequence, and converted into a recording waveform by the recording waveform generation circuit 1012 The recording is continuously performed on the recording layer on the optical disc 1001 according to the recording and reproducing direction via the pickup 1002. Further, at the time of reproduction, the reproduction waveform read continuously from the recording layer of the optical disc 1001 through the pickup 1002 in the recording and reproduction direction is subjected to waveform processing and binarization processing at the RF detection circuit 1010 to be decoded. Decoding is performed in accordance with a predetermined recording format in 1011 and output to the host 1006 as reproduction data. Here, by using the address obtained by the address reproduction circuit 1004, the recording and reproduction position can be detected, and the recording and reproduction of data on the recording layer can be performed.

FIG. 4 is a block diagram of an address detection circuit according to a second embodiment of the present invention. A difference from FIG. 1 is that not the layer information but the address position information is used as a signal for selection switching of the address selection circuit 102. This will be described using the ADIP address arrangement configuration and address detection timing diagrams of FIGS. 4 and 5. As shown in the upper part of FIG. 5, as the address structure of the servo layer, ADIP # (n) stores bits of ADIP address = X sequentially from the most significant bit A21 in order from the inner circumference, and ADIP # (n + 1) In order to store ADIP address = ~ X-1 in order from the least significant bit B0, the even numbered address (0, 2, ...) of ADIP Word is the odd numbered address (1, 3) are arranged under the rule that the addresses of the odd layer are stored from the least significant bit. Since the recording and reproduction are performed from the inner circumference to the outer circumference at the time of recording and reproduction on the even layer (layer 0, layer 2,...), The address detected by the wobble of the servo layer is ADIP address = X in ADIP # (n) , A1 and A0 can be detected in the order of bits A21, A20,..., A1 and A0, and ADIP # (n + 1) can be detected in the order of bits B0, B1,. Address generation is performed using the address detection circuit of FIG. Even-numbered addresses are detected from the most significant bit, and odd-numbered addresses are detected from the least significant bit. Therefore, in the odd-numbered addresses, the bit replacement circuit 101 performs processing of replacing the bits of the detection value. As a result, the address selection circuit 102 selects the even detection value as it is based on the position information of the ADIP Word, and the odd number selects the output of the bit replacement circuit 101. It can be detected as +2, ~ X-3, .... Therefore, by inverting the bits of the odd-numbered ADIP address in the address generation circuit 103, it is possible to generate an ADIP address incremented by ADIP address = X, X + 1, X + 2, X + 3,. Therefore, recording and reproduction of data on the recording layer of the even layer can be performed in synchronization with the detected ADIP address. On the other hand, at the time of recording / reproduction on the odd layer (layer 1, layer 3, ...), the address detected by the wobble of the servo layer is ADIP # (n + 3) because recording / reproduction is performed from the outer circumference to the inner circumference. ADIP address = bits X21, X20 can be detected in the order of bits B21, B20,..., B1, B0, and ADIP # (n + 2) is bits A0, A1, ..., A20 constituting ADIP address = X + 2. , A21, and address generation is performed using the address detection circuit of FIG. 4 as in the case of the even layer. Even in the odd layer, as in the even layer, even-numbered addresses are detected from the most significant bit and odd-numbered addresses are detected from the least significant bit. Do the processing. As a result, the address selection circuit 102 selects the even detection value as it is based on the position information of the ADIP Word, and the odd number selects the output of the bit substitution circuit 101, thereby obtaining ~ X-3, X + 2 as ADIP address. , ~ X-1, X, ... can be detected. Therefore, by inverting the bits of the odd-numbered ADIP address in the address generation circuit 103, it is possible to generate an ADIP address incremented by ADIP address = ̃X-3, ̃X-2, ̃X−1, ̃X,. Become. Therefore, recording and reproduction of data on the recording layer of the odd layer can be performed in synchronization with the detected ADIP address. By using the address structure having the address bit arrangement as shown in FIG. 5, the detection method can be made common to the even layer and the odd layer. In the present embodiment, even addresses (0, 2,...) Are detected values as they are, and odd numbers (1, 3,...) Are outputs of bit replacement circuit 101 to generate continuous addresses. It has been explained. However, even if the even-numbered (1, 3,...) Detection addresses are read out and controlled using only the even-numbered (0, 2,...) Detection values, detection is possible similarly. As the even-numbered (0, 2,...) Detection address in the even layers (layer 0, layer 2,...) As in X, X + 2,. If even-numbered detection addresses can be specified based on the position information of ADIP Word as ~ X-3, ~ X-1, ... as even-numbered (0, 2, ...) detection addresses, in two address cycles It is possible to read the continuity of the address of. Furthermore, since the odd-numbered (1, 3,...) Addresses can also be generated as address values that interpolate between the detected even-numbered (0, 2,...) Addresses, the finally specified ADIP Data recording and reproduction can be realized similarly in synchronization with the address.

Also, in the example of FIG. 5, it has been described that the number of bits of ADIP address information that can be stored in one ADIP Word is 22 bits, but the number of bits of ADIP address information that can be stored in one ADIP Word is the number of bits for two layers Even if it is a structure that can store (for 44 bits if it is equivalent to 22 bits), the same control can be performed. This will be described using the ADIP address arrangement configuration and the timing chart of the address detection of FIG. As shown in the upper part of FIG. 6, as the address structure of the servo layer, ADIP # (n) stores bits of ADIP address = X in order from the most significant bit A21 in addition to ADIP address = ~ X By storing bits in order from the least significant bit B0 and storing ADIP address = X + 1 and ADIP address to X-1 according to the same rule in ADIP # (n + 1), the first half of each ADIP Word 22 In the bits, the address of the even layer is constructed from the most significant bit, and the address of the odd layer is stored from the least significant bit in the second half 22 bits. In this way, if 22 bits of the first half of the address information of each ADIP word are generated as detection addresses from each layer as they are as detection values, address detection can be easily performed. In addition, it is possible to double-detect the address from each ADIP Word by replacing the 22 bits in the second half of the address information of each ADIP Word and then performing bit inversion, which makes it possible to further improve detection accuracy. .

As described above, in the present embodiment, even when the direction of the address structure arranged in the servo layer and the recording / reproducing direction are reversed at the time of recording / reproduction to the odd layer, the address detection circuit is generated by bit replacement or bit inversion. Control can be easily performed by using the address. In addition, as the address structure of the medium in the present embodiment, by making the bit arrangement method of the desired address symmetrical also from the inner circumferential direction and the outer circumferential direction, the address generation method in each layer can be made common and more easily. You will be able to control. Also, in the reproducing apparatus for reproducing data from the optical disc having the address structure described in the present embodiment as in FIG. 10 and the recording apparatus for recording data on the optical disc, the address detection circuit described in FIG. The position where the data is recorded and reproduced is detected, and the recording and reproduction of the data on the recording layer can be performed.

FIG. 7 is a block diagram of an address detection circuit according to a third embodiment of the present invention. The difference from FIG. 4 is that an even bit selection circuit 701 and an odd bit selection circuit 702 are added. This will be described using the ADIP address arrangement configuration and address detection timing diagrams of FIGS. 7 and 8. As shown in the upper part of FIG. 8, as the address structure of the servo layer, ADIP # (n) and ADIP # (n + 1) sequentially from the inner circumference ADIP address of the even layer = X [A21, A20, ..., A1. , A0] and ADIP address of the odd layer = ~ X-1 [B21, B20, ..., B1, B0], the address most significant bit A21 of the even layer, the least significant bit B0 of the odd layer, ..., the uppermost of the even layer Based on the rule of storing in order of bit A0 and the most significant bit B21 of the odd layer, it is divided and stored in 2 ADIP words. Since the recording and reproduction are performed from the inner circumference to the outer circumference at the time of recording and reproduction on the even layer (layer 0, layer 2,...), The address detected by the wobble of the servo layer is ADIP address = X in ADIP # (n) And ADIP address = ~ X-1 can be detected in the order of some of the bits A21, B0, ..., A11, B10, and ADIP # (n + 1) with ADIP address = X and ADIP address = ~ X-1 .., A0, B21 can be detected in this order, and address generation is performed using the address detection circuit of FIG. By selecting even-numbered bits (0, 2,...) And odd-numbered bits (1, 3,...) In detection order and combining bits for 2 ADIP words, the output of even bit selection circuit 701 is , A21, A20,..., A1, A0 and an address of ADIP address = X are output in order from the most significant bit, and the output of the odd bit selection circuit 702 is B0, B1, ..., B20, B21 and ADIP address = ~ X An address of -1 is output in order from the least significant bit, and can be converted into an output from the most significant bit in order from B21, B20, ..., B1, B0 as an output of the bit replacement circuit 101. Therefore, the address selection circuit 102 selects either the address of ADIP address = X as it is or ADIP address = X + 1 obtained by obtaining the bit inverted value of ADIP = ~ X−1. It can be detected as X (or X + 1), X + 2 (X + 3), X + 4 (X + 5),. Therefore, recording and reproduction of data on the recording layer of the even layer can be performed in synchronization with the detected ADIP address. On the other hand, at the time of recording / reproduction on the odd layer (layer 1, layer 3, ...), the address detected by the wobble of the servo layer is ADIP # (n + 3) because recording / reproduction is performed from the outer circumference to the inner circumference. ADIP address of odd layer = ~ X-3 and ADIP address of even layer = A part of bits constituting X + 2 can be detected in order of B21, A0, ..., B11, A10, ADIP # (n + 2) ADIP .., B0, and A21 in order of bits constituting address = ̃X-3 and ADIP address = X + 2, and address generation is performed using the address detection circuit of FIG. By selecting even-numbered bits (0, 2,...) And odd-numbered bits (1, 3,...) In detection order and combining bits for 2 ADIP words, the output of even bit selection circuit 701 is , B21, B20, ..., B1, B0 and ADIP address = ~ X-3 addresses are output in order from the most significant bit, and the output of the odd bit selection circuit 702 is A0, A1, ..., A20, A21 and ADIP address An address of = X + 2 is sequentially output from the least significant bit, and can be converted as an output of the bit replacement circuit 101 into an order output from the most significant bit A21, A20, ..., A1, A0. Therefore, the address selection circuit 102 selects either an address of ADIP address = X-3 as it is or ADIP address = X-2 obtained by obtaining a bit-inverted value of ADIP = X + 2. Then, it can be detected as ~ X-3 (or ~ X-2), ~ X-1 (~ X), ~ X + 1 (~ X + 2), ... in the following. Therefore, recording and reproduction of data on the recording layer of the odd layer can be performed in synchronization with the detected ADIP address. By using the address structure having the address bit arrangement as shown in FIG. 8, the detection method can be made common to the even layer and the odd layer.

Also in the present embodiment, the number of bits of ADIP address information that can be stored in one ADIP Word as described in the second embodiment is the number of bits for two layers (44 bits for 22 bits). Even if it is possible structure, it can control similarly. This will be described using the ADIP address arrangement configuration and the timing chart of the address detection of FIG. As shown in the upper part of FIG. 9, as the address structure of the servo layer, ADIP # (n) in order from the inner circumference ADIP address of even layer = X [A21, A20, ..., A1, A0] and ADIP of odd layer Address = ~ X [B21, B20, ..., B1, B0] is the address most significant bit A21 of the even layer, the least significant bit B0 of the odd layer, ..., the most significant bit A0 of the even layer, the most significant bit B21 of the odd layer It arranges under the rule of storing in order like. In this way, by selecting even-numbered bits (0, 2,...) As detection addresses from each layer, detection is continuously performed as ADIP address = X, X + 1, X + 2,. Is possible. In addition, it is also possible to double-detect the address from each ADIP Word by selecting bits in the odd-numbered bits (1, 3,...) And replacing the bits, and it is also possible to detect an address twice. It becomes possible.

Although only the placement and detection method of the ADIP address stored in each ADIP Word have been described in the above embodiments, it goes without saying that other address information stored as address data such as ADIP auxiliary data and a parity portion is also included. Similarly, by performing the arrangement and bit replacement, it becomes possible to cope with reading and detection at the time of recording and reproduction of the even layer and the odd layer. Also, although the storage method of the address information has been described as storing so that it can be read out sequentially from the most significant bit of the address in the direction of reading, it is not particularly limited to this storage method. As long as the desired address arrangement method can be made symmetrical from the outer peripheral direction, various modifications can be made.

Also, in the embodiments described so far, although the description has been made using the ADIP address structure of DVD + RW, the present invention is not limited thereto, and LPP (Land Pre-Pit) address structure used in DVD-R and DVD-R It is used for a recording medium having a layer in which address information is embedded only in a single layer, including a PID (Physical ID) address structure generated by pits used in RAM, an ADIP address structure used in BD, etc. The present invention can be applied to various address structures constituting physical address information. Although an address structure having one address information per one unit recording data has been described as an example like the ADIP address structure of DVD + RW, one unit recording data (one) is described as a PID address structure of DVD-RAM. Similarly, in the case of an address structure having a plurality of address information (four PIDs) per sector, the address in each layer is symmetrical by arranging the desired address arrangement and bit arrangement in the inner and outer circumferential directions. The detection method can be applied for the purpose of common.

DESCRIPTION OF SYMBOLS 101 ... Bit exchange circuit, 102 ... Address selection circuit, 103 ... Address generation circuit, 701 ... Even bit selection circuit, 702 ... Odd bit selection circuit, 1001 ... Optical disk, 1002 ... Pickup, 1003 ... Spindle motor, 1004 ... Address reproduction circuit 1005: data recording / reproducing circuit 1006: host 1007: microcomputer 1008: wobble detection circuit 1009: address detection circuit 1010: reproduction waveform detection circuit 1011: decoding processing circuit 1012: recording waveform generation circuit 1013: 1013 Encoding processing circuit, 1101 ... objective lens

Claims

In a recording medium having an area for recording data and an address indicating a physical recording position corresponding to the data,
The recording medium has a single address layer for storing address information and a plurality of recording layers for recording data,
The even layers (layer numbers 0, 2, ...) of the recording layer record data from the inner circumference to the outer circumference, and the odd layers (layer numbers 1, 3, ...) of the recording layer data from the outer circumference to the inner circumference Record
A recording medium characterized in that only address information of even layers of the recording layer is stored from the inner periphery sequentially from the most significant bit.
A method of detecting an address in a recording medium having an area for recording data and an address indicating a physical recording position corresponding to the data.
The recording medium has a single address layer for storing address information and a plurality of recording layers for recording data,
The even layers (layer numbers 0, 2, ...) of the recording layer record data from the inner circumference to the outer circumference, and the odd layers (layer numbers 1, 3, ...) of the recording layer data from the outer circumference to the inner circumference Address detection method at the time of recording
The address information stored from the inner circumference to the outer circumference is read from the outer circumference to the inner circumference at the time of recording and reproduction on the recording layer of the odd layer, and the most significant bit and the least significant bit of the detected address are interchanged An address detection method characterized in that
A reproduction method for reproducing data by detecting a reproduction position of data according to an address detected by the address detection method according to claim 2.
A recording method of recording data by detecting a recording position of data according to an address detected by the address detection method according to claim 2.
In a recording medium having an area for recording data and an address indicating a physical recording position corresponding to the data,
The recording medium has a single address layer for storing address information and a plurality of recording layers for recording data,
The even layers (layer numbers 0, 2, ...) of the recording layer record data from the inner circumference to the outer circumference, and the odd layers (layer numbers 1, 3, ...) of the recording layer data from the outer circumference to the inner circumference Record
The first address information which stores the address information of the even layer of the recording layer in order from the most significant bit from the inner periphery, and the second address which stores the address information of the odd layer of the recording layer in order from the inner periphery from the least significant bit What is claimed is: 1. A recording medium comprising information, wherein 1 unit address of first address information and 1 unit address of second address information are alternately stored.
A method of detecting an address in a recording medium having an area for recording data and an address indicating a physical recording position corresponding to the data.
The recording medium has a single address layer for storing address information and a plurality of recording layers for recording data,
The even layers (layer numbers 0, 2, ...) of the recording layer record data from the inner circumference to the outer circumference, and the odd layers (layer numbers 1, 3, ...) of the recording layer data from the outer circumference to the inner circumference Address detection method at the time of recording
The first address information which stores the address information of the even layer of the recording layer in order from the most significant bit from the inner periphery, and the second address which stores the address information of the odd layer of the recording layer in order from the inner periphery from the least significant bit It contains information, and 1 unit address of the first address information and 1 unit address of the second address information are stored alternately, and when recording and reproducing on the recording layer of each layer, layer information of the recording layer is used. An address detection method comprising: switching an extraction position of address information based on the address information and reading out the first address information or the second address information to detect an address.
A reproduction method for reproducing data by detecting a reproduction position of data according to an address detected by the address detection method according to claim 6.
A recording method for recording data by detecting a recording position of data according to an address detected by the address detection method according to claim 6.
In a recording medium having an area for recording data and an address indicating a physical recording position corresponding to the data,
The recording medium has a single address layer for storing address information and a plurality of recording layers for recording data,
The even layers (layer numbers 0, 2, ...) of the recording layer record data from the inner circumference to the outer circumference, and the odd layers (layer numbers 1, 3, ...) of the recording layer data from the outer circumference to the inner circumference Record
The first address information which stores the address information of the even layer of the recording layer in order from the most significant bit from the inner periphery, and the second address which stores the address information of the odd layer of the recording layer in order from the inner periphery from the least significant bit A recording medium having information, wherein both addresses of one unit address of first address information and one unit address of second address information are alternately stored bit by bit.
A method of detecting an address in a recording medium having an area for recording data and an address indicating a physical recording position corresponding to the data.
The recording medium has a single address layer for storing address information and a plurality of recording layers for recording data,
The even layers (layer numbers 0, 2, ...) of the recording layer record data from the inner circumference to the outer circumference, and the odd layers (layer numbers 1, 3, ...) of the recording layer data from the outer circumference to the inner circumference Address detection method at the time of recording
The first address information which stores the address information of the even layer of the recording layer in order from the most significant bit from the inner periphery, and the second address which stores the address information of the odd layer of the recording layer in order from the inner periphery from the least significant bit It has information, and both the 1 unit address of the first address information and the 1 unit address of the second address information are alternately stored bit by bit, and the recording layer is recorded and reproduced on the recording layer of each layer. And detecting the address by reading out the first address information or the second address information by switching the extraction bit position based on the layer information.
A reproduction method of reproducing data by detecting a reproduction position of data by an address detected by the address detection method according to claim 10.
A recording method of detecting data recording position and recording data according to an address detected by the address detection method according to claim 10.
A reproduction method for reproducing data from a recording medium, comprising
The recording medium has a single address layer for storing address information and a plurality of recording layers for recording data,
When reproducing data from the recording medium in which only the address information of the even-numbered layer among the plurality of recording layers is stored from the inner circumference sequentially from the most significant bit, the even-numbered layers (layer numbers 0 and 2) , ... reproduces data from the inner circumference to the outer circumference, and among the plurality of recording layers, the odd layers (layer numbers 1, 3,...) Reproduce data from the outer circumference to the inner circumference.
How to play.
A recording method for recording data on a recording medium, comprising
The recording medium has a single address layer for storing address information and a plurality of recording layers for recording data,
When data is recorded on the recording medium in which only the address information of the even-numbered layer among the plurality of recording layers is stored from the innermost circumference sequentially from the most significant bit, the even-numbered layers (layer numbers 0 and 2) , ... records data from the inner circumference to the outer circumference, and among the plurality of recording layers, data is recorded from the outer circumference to the inner circumference of the odd-numbered layers (layer numbers 1, 3,...)
Recording method.
A reproduction method for reproducing data from a recording medium, comprising
The recording medium has a single address layer for storing address information and a plurality of recording layers for recording data,
Among the plurality of recording layers, the first address information in which the even layer address information is stored from the inner periphery in order from the most significant bit, and the address information of the odd layer among the plurality of recording layers is ordered from the least significant bit The data is reproduced from the recording medium which has the second address information stored from the inner circumference and has alternately stored one unit address of the first address information and one unit address of the second address information. Sometimes, even layers (layer numbers 0, 2, ...) among the plurality of recording layers reproduce data from the inner circumference to the outer circumference, and odd layers (layer numbers 1, 3, ...) among the plurality of recording layers. Plays data from the outer circumference to the inner circumference,
How to play.
A recording method for recording data on a recording medium, comprising
The recording medium has a single address layer for storing address information and a plurality of recording layers for recording data,
Among the plurality of recording layers, the first address information in which the even layer address information is stored from the inner periphery in order from the most significant bit, and the address information of the odd layer among the plurality of recording layers is ordered from the least significant bit Data is recorded on a recording medium which has second address information stored from the inner circumference and alternately stores one unit address of the first address information and one unit address of the second address information. Sometimes, even layers (layer numbers 0, 2, ...) among the plurality of recording layers record data from the inner circumference to the outer circumference, and odd layers (layer numbers 1, 3, ...) among the plurality of recording layers Records data from the outer circumference to the inner circumference,
Recording method.
A reproduction method for reproducing data from a recording medium, comprising
The recording medium has a single address layer for storing address information and a plurality of recording layers for recording data,
Among the plurality of recording layers, the first address information in which the even layer address information is stored in order from the most significant bit from the inner periphery and the address information in the odd layer of the recording layer is stored from the inner periphery in order from the least significant bit The data is reproduced from the recording medium, which has the second address information being stored and alternately stores the address of one unit of the first address information and the address of one unit of the second address information alternately for each bit. At the same time, even layers (layer numbers 0, 2,...) Among the plurality of recording layers reproduce data from the inner circumference to the outer circumference, and odd layers (layer numbers 1, 3,. ) Reproduces data from the outer circumference to the inner circumference,
How to play.
A recording method for recording data on a recording medium, comprising
The recording medium has a single address layer for storing address information and a plurality of recording layers for recording data,
Among the plurality of recording layers, the first address information in which the even layer address information is stored in order from the most significant bit from the inner periphery and the address information in the odd layer of the recording layer is stored from the inner periphery in order from the least significant bit Data from a recording medium which has the second address information being stored, and alternately stores both the 1 unit address of the first address information and the 1 unit address of the second address information for each bit When recording, data is recorded from the inner circumference to the outer circumference in the even layers (layer numbers 0, 2,...) Among the plurality of recording layers, and the odd layers (layer numbers 1, 3,. ) Records data from the outer circumference to the inner circumference,
Recording method.