MXPA98005944A - Medium of optimal registration and method of registration of mi - Google Patents

Abstract

The present invention relates to a novel recording means capable of obtaining high density, reliability in a recording / reproduction operation and facilitating the process carried out by means of a driving device. An amount of oscillation amplitude of a track is made to be from 10 nm to 15 nm and a track inclination of this track is made from 0.74 micrometer to 0.82 micrometer. The determined values allow a high capacity record to be obtained and the registration / reproduction operation to be prevented from deteriorating. As management information, the recommended information for a recording / reproduction operation of an internal peripheral position and an external peripheral position is recorded. The size of the data in a link section is made to be the same as the sector to constitute a block of data

Description

"OPTICAL RECORD MEANS AND REGISTRATION METHOD OF THE SAME" BACKGROUND OF THE INVENTION FIELD OF THE INVENTION 5 The present invention relates to an optical recording medium such as a similar optical disc, and a method of recording thereof, and more particularly to a WR optical disk with which the information of the direction by swinging a pre-slot.

DESCRIPTION OF THE RELATED TECHNIQUE To record the data on a disk, the address information must be registered to allow the data to be recorded at a predetermined position. The address information is sometimes recorded by oscillation. An example of the method for recording the oscillation information mentioned above in a track of a disc is disclosed in US Patent Number 4,942,565, that is, a track where a data is recorded is in the form of a pre-groove that forms above. The side wall of the pre-slot is made - - * oscillate (allows snaking) in response to address information. In this way, the address can be read from the oscillation information. Therefore, even when the data bit or similar that indicates the direction is not formed earlier in the track, the data can be recorded or played back to and from a required position. The aforementioned optical recording medium is required to have a large capacity while being maintains the reliability of a registration / reproduction operation. Therefore, the suggestion of an appropriate registration density has been required. In addition, it is preferred to understand the matter that the process that is carried out by the apparatus of Registration / reproduction can be carried out easily, and also that compatibility with a disc of another type in terms of a medium and an apparatus is required. For example, a disc called "DVD-ROM (Digital Versatile ROM Disk / Digital Video ROM Disk) has been developed as a preferred optical disc for use in multiple media." A recordable media capable of being rewritten has a compatibility with DVD-ROM and that does not complicate the recording / playback device, it is required of course.

* As a natural case, the disk itself must have a function to determine the type of disk in consideration of compatibility.

COMPENDIUM OF THE INVENTION An object of the present invention is to solve. the above mentioned problems and provide a means of novel optical registration and registration method of it. For this purpose, according to the present invention, an optical recording means is provided in which a track where the data is recorded is formed previously and the track is oscillated with a signal obtained by frequency modulation of a carrier having a predetermined frequency corresponding to the address information, wherein an amount of an amplitude of oscillation of the track is made to be of a value within a range of 10 nm to 15 nm and one The slope of the runway track is made to be of a value within a scale of 0.74 micrometer to 0.82 micrometer. The aforementioned values allow a predetermined data recording capacity in the optical recording medium under a condition of a predetermined NA * and a laser wavelength. In addition, the relationship between the amount of the oscillation amplitude and the slope of the track is made to be a value by which a satisfactory reproduction error rate of the address information and reproduction information can be obtained. The track where the data is recorded is formed previously, the track is oscillated with a signal * obtained by modulating in frequency a carrier that has a predetermined frequency in accordance with the address information, and the oscillation that serves as an address information is formed to correspond to the rotations having a constant angular velocity. The information that allows the identification of type of registration medium is recorded as administration information. The optical recording medium has a structure that the zoning of the track is adjusted in such a way that the data can be recorded at a linear density essentially constant, an area in which the management information of the optical recording medium is recorded is formed at a predetermined position in the optical recording medium and the recommended information for a recording / reproduction operation in at least one internal position and an external position is recorded as the administration information. As the administration information, the values of a track inclination and a central linear density are recorded or the information that allows the slope of the track to be recorded and the central linear density to be distinguished. AND. That is, the recording / reproducing apparatus is enabled to recognize a preferred recording / reproducing condition with respect to the optical recording medium and which identifies the physical properties of the optical recording medium. An optical recording medium in which a data is recorded is formed previously, and the track is provided which is oscillated with a signal obtained by a frequency modulating carrier having a predetermined frequency in response to the address information, in wherein the recording is carried out in such a way that a link section is formed between a data block 20 that serves as a data record unit in the track and an adjacent data block, and the size of the data of the section The link is made to be equal to the minimum data unit to constitute a data block.

As a result, a process for a link section required to constitute a structure capable of being re-written can be facilitated. [C] Logical Format of an Optical Disk. 5 C-1: Sector Format. C-2: Liaison Section. C-3: Frame Synchronization Signal. C-4: Reason for Establishing the Liaison Section.

* [D] Zoning Format. 10 [E] Recording / playback device.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is an explanatory diagram showing a disc format according to an embodiment of the present invention. Figure 2 is an explanatory diagram showing the structure of the disk area in accordance with this embodiment. Figure 3 is an explanatory diagram showing the control data for the disk according to the mode. Figure 4 is an explanatory diagram showing the information of the physical format of the control data for the disk according to the modality.

* Figure 5 is an explanatory diagram showing an oscillatory pre-groove of the disk according to the embodiment. Figure 6 is an explanatory graph showing a slot width and an amplitude of the oscillation of the disc according to the modality. Figure 7 is an explanatory diagram showing a CAV format of the direction of oscillation of the disk according to the mode. Figure 8 is an explanatory diagram showing a segment of a disc oscillation direction in accordance with the embodiment. Figure 9 is an explanatory diagram showing the frame structure of the disk oscillation direction in accordance with the embodiment. Figure 10 is an explanatory graph showing a fluctuation and the length of a data bit to establish the disc format according to the modality. Figure 11 is an explanatory graph showing the relationship between C / N of the oscillation and the oscillation amplitude to establish the disc format according to the modality. Figure 12 is an explanatory graph showing the relationship between the margin of bias of the direction of oscillation and the amplitude of oscillation to establish the disc format according to the modality. Figure 13 is an explanatory graph showing the relationship between a slope of the track and a radial obliquity. Figure 14 is an explanatory graph showing the relationship between the obliquity margin and the inclination of the track to establish the disc format according to the modality. Figure 15 is a functional diagram showing a cutting apparatus for manufacturing the disk according to the embodiment. Figure 16 is a functional diagram showing an oscillating signal generating circuit with respect to the disc in accordance with the embodiment. Figure 17 is an explanatory diagram showing a bi-phase signal that is sent by the generator circuit of the oscillation signal with respect to the disk according to the mode. Figure 18 is an explanatory diagram showing the bi-phase signal that is sent by the generator circuit of the oscillation signal with respect to the disk according to the embodiment.

Figure 19 is an explanatory diagram showing the frequency modulation in the generator circuit of the oscillation signal with respect to the disc in accordance with the modality. Figure 20 is an explanatory diagram showing the frequency modulation in the circuit that generates the oscillation signal with respect to the disc according to the modality. Figure 21 is an explanatory graph showing the operation to synthesize the oscillation signal with respect to the disc according to the modality. Figure 22 is an explanatory diagram showing the format of the disk sector in accordance with the mode. Figure 23 is an explanatory diagram showing the data structure of 32 Kbyte in accordance with the modality. Figure 24 is an explanatory diagram showing a state in which an external code is interleaved according to the modality. Figure 25 is an explanatory diagram showing the structure of the block data according to the modality.

Figure 26 is an explanatory diagram showing the structure of a link section according to the modality. Figure 27 is an explanatory diagram showing the structure of the data in the section of the link in accordance with the modality. Figure 28 is an explanatory diagram showing the liaison section in accordance with the * modality. Figure 29 is an explanatory diagram showing a synchronization signal for a ROM disk. Figure 30 is an explanatory diagram showing a synchronization signal for the disk according to the mode. Figure 31 is an explanatory diagram showing a pattern of the synchronization signal of compliance with the mode. Figure 32 is an explanatory diagram showing the zone structure of the disk according to the mode. Figure 33 is an explanatory diagram showing the disk zone structure according to the mode. Figure 34 is an explanatory diagram showing a change in the write clock corresponding to the zone structure of the disk according to the mode. Figure 35 is an explanatory diagram showing the disc zoning format according to the modality. Figure 36 is an explanatory diagram showing the disk zoning format according to the modality. Figure 37 is a functional diagram of a recording / reproducing apparatus according to the embodiment. Figure 38 is a flow chart of a clock switching process of the recording / reproducing apparatus in accordance with the mode. Figure 39 is an explanatory diagram showing the contents of a ROM box of the recording / reproduction apparatus according to the modality. Figure 40 is an explanatory diagram showing registration / reproduction operation in accordance with the mode.

DESCRIPTION OF THE MODALITIES TO WHICH IT HAS BEEN DONE REFERENCE - An optical disk, a cutting apparatus for cutting the optical disk and a recording / reproducing apparatus according to one embodiment of the present invention, will now be described as follows: [A] Physical Format of an Optical Disk. A-l: Disk format. A-2: Control Data. A-3: Oscillation Direction Format. 44: Reason for Establishing the Physical Format. [B] Cutter device. [C] Optical Disk Optical Format. C-1: Sector Format. C-2: Liaison Section. C-3: Frame Synchronization Signal. C-4: Reason for Establishing the Liaison Section.

[D] Zoning Format. [E] Recording / playback device. [A] Optical Disk Optical Format A-l: Disk Format.

The optical disk according to this embodiment is an optical disk where the data is recorded by a phase change method. The physical format of the optical disc according to this modality is structured as shown in Figure 1.

As for the size of the disc, the diameter of the disc is 120 millimeters. The disc has a structure constituted by rolling two plates, each one having a disc thickness (one sub-straight) of 0.6 millimeter. Therefore, the total disk thickness is 1.2 millimeters. A method is used to hold a mechanical disk. That is, the shape of the disc in accordance with this mode is similar to that of a CD (Compact Disc) or a VDV-ROM (Versatile Digital-ROM Disk / Digital Video Disc-ROM) and 10 thus in appearance. In addition, a case that can be used when loading in a recording / reproduction apparatus is carried out and that accommodates and retains the disk is prepared as an option. A track 15 is formed on the disk by a slot (recess). The slot is oscillated (snaking allowed) so that a physical address is expressed. As will be described later, the slot is oscillated with a signal obtained by frequency modulation of the addresses so that the reproduced information of the slot is modulated in frequency. Therefore, an absolute address can be extracted. The disk is rotated by a CAV method (Constant Angular Velocity). Therefore, the absolute address included in the slot is the CAV data.

The depth of the slot is? / 8 which is the wavelength of a recording / reproduction laser beam, the width of the slot is approximately 0.48 millimeter and the amplitude of oscillation is approximately 12.5 nm. 5 Does the laser beam wavelength satisfy? = 650 nm (-5 / + 15 nm). The numerical aperture of an optical head of the recording / reproduction apparatus satisfies NA = 0.6. The optical disc according to this modality employs a slot registration method (the land is not used to carry out a registration operation). The length from the center of a slot to the center of an adjacent slot in the width direction of the track is the slope of the track. The inclination of the track graduate to be 0.80 micrometer. The operation to record the data is carried out by means of a CLD (Constant Linear Density) method. The linear density is graded to be 0.35 micrometer / bit. 20 A certain width is graduated as the scale for linear density. In reality, a multiplicity of zoning settings are carried out so that the total disk is brought to a state close to the constant linear density. As will be described later, the aforementioned state is called a CLD zone (Zoned Constant Linear Density). A recordable area, where the data can be recorded, is formed on the disk that has the diameter of 120 millimeters as will be described later and the zoned CLD is used so that the slope of the 0.8 micrometer track produces a recording capacity of 3.0 Gbyte on one side (one of the record layers). As a method to modulate the data to be recorded, a modulation of 8-16 is used similarly to the so-called DVD so that the edge of the record mark of the data in the phase that changes the recording medium is taken to cape. Figure 2 shows the structure of the area from the side of the internal periphery (entrance) to the side of the outer periphery (exit) of the disc. The left-hand portion of the previous structural view has the positions in the radial direction of the disk, while the right-hand side has the values of the absolute directions expressed by hexadecimal notation. The inner peripheral side (from radial positions of 22.6 millimeters to 24.0 millimeters) that have diagonal lines is graded to an area where enhanced pitting is recorded.

- In the aforementioned enhanced area, the codes are registered for two ECC blocks (hereinafter simply called "blocks") of an absolute address "2F200h" in addition to the data of all 5? 00h. "In addition, the control data for 192 blocks are registered from a position corresponding to the absolute address "2F200h." The block (the ECC block) is a unit for * constitute an error correction block and have a structure in which an error correction code is added for each 32 Kbyte data. The aforementioned control data and the reference codes are recorded when a cutting process is carried out for the manufacture of a master disk 15 for chopping the data for reading only. The control data includes the physical administration information of the optical disk and so on. A region of a radial position of 24.0 millimeters to the outer periphery, that is, a region 20 except the enhancement area is a recordable region (a slot area) where a track is formed by a slot. Note that an external portion of the radial position of 58.0 millimeters is a portion in which only one groove is formed.

An area capable of registering allowed for a user to record the data is a region from a radial position of 24.19 millimeters to 57.9 millimeters. The recordable area is an area of an absolute address of 31000h to lAOEBFh. In the more inward portions than the recordable area and further outward than the same, a protective zone, a disk test zone and a driving test zone and a DMA (Administration Area of Defect). The protection zone is provided as an area in which the synchronization of a write clock is performed when the data is written to the disk test area or the DMA. 15 The disk test area is provided to check the condition of the disk. The pulse test zone is provided to check a status of the record / playback drive mechanism. The DMA is composed of DMA 1 and DMA 2 formed on the side of the internal periphery of the disk and DMA 3 and DMA 4 formed on the side of the external periphery of the disk. DMA 1 to DMA 4 have the same content registered in them.

In the registered DMA it is in a result of the detection of a defect in the recordable area and the information of the alternative sector. When the registration / reproduction operation is carried out by reference to the content of the DMA, registration / reproduction can be carried out in such a way that a defective region is avoided. A-2: Control Data The content of the control data that is recorded 10 in the highlight area as the reproduction-only data, as described above is shown in Figure 3. Each of the 192 blocks that form the control data includes 16 sensors (1 sector = 2048 bytes: the 15 sector format will be described later). The 16 sectors are used as shown in Figure 3. That is, information about the physical format of the disk is recorded in the first sector that has a sector number 0. 20 In a sector that has a sector number 1, the manufacturing information of the disk is recorded. The aforementioned information is the data of the text and the data of the code that can be registered by a manufacturer of the disk in a free format manner.

In sectors that have the sector numbers 12 to 15, a variety of right and copy information is recorded. The content of the information of the physical format 5 that is recorded in the sector that has a sector number 0 is shown in Figure 4 together with the position of the byte and the byte number in the sector. The type of book and the version of the part are registered with a position of byte 0. 10 As for the type of book, a data of 4 bits to record the type of the disk, for example a disk of read type only, disk capable of being rewritten or similar. As the version of the part, the information of the 4-bit version is recorded. At a 1-byte position, each four-bit data is used to record the disk size and the minimum read rate. The size of the disk is the information of the disk type, that is, an 8-centimeter disk, a disc of 12 centimeters or another disc. In a byte 2 position, the structure of the disk is recorded. In the aforementioned position, the following information is recorded: the number of layers, i.e., the disk has a single layer structure or a structure of two layers, whether the type of track is the - ^? - track path parallel to an opposite track path, whether or not the layer type includes the highlight user data area, the recordable user data area and the user data area capable of 5 written or similar. In the 3-byte position, the information about the recording density that includes the 4-bit information of the linear density and the track density (the track inclination) each is recorded. 10 The disc according to this modality has the linear density of 0.35 micrometer per bit and a track inclination of 0.8 micrometer registered therein. Twelve bytes are used from positions 4 to 15 of byte as a data area mapping, while sixteen bytes of the byte positions 16 to 31 are used as a reservation. In a byte position 32, the value of the CAV revolution number is recorded. 20 Six bytes from the byte positions 33 to 38, six bytes from the byte positions from 39 to 44 and four bytes from the byte positions from 45 to 48 are the areas where the recommended information is recorded respectively at a first speed linear, a second linear speed and a third linear speed.

The first linear velocity is a linear velocity in a radial position of 24 millimeters at a predetermined revolution number of CAV. Since the rotation of the disk is carried out in CAV, the linear velocity varies 5 depending on the radial position. In other words, the radial position determines the linear velocity. The first linear velocity, which is a linear velocity in the radial position of 24 millimeters, means a linear velocity at the front end of the area capable of being recorded. in Figure 2. The second linear velocity is a linear velocity in the radial position of 41 millimeters at a predetermined revolution number of CAV, i.e., a linear velocity in essentially the intermediate position in the recordable area. In aion, the third linear velocity is a linear velocity in the radial position of 58 millimeters at a predetermined revolution number of CAV, i.e. a linear velocity in the outer peripheral position of a region having an effective data in the groove area. .

As the recommended information, the recommended value of each peak power, the pushing power and the forward power of the laser beam at each radial position (the linear velocity) is recorded. Since the disk in accordance with this When the mode is rotated in CAV, the linear velocity F is raised to the outer peripheral side of the disk. To obtain the CLD (Constant Linear Velocity) recording method under this state, the registration clock frequency is changed to correspond to the radial position 5 (which is a zone to be described later). Since the aforementioned method is employed, the optimum value of the recording / reproducing laser power varies between the internal periphery and the outer periphery. Actually, the optimal value is essentially changed linearly. As the recommended values for the first, second and third linear speeds, the minimum and intermediate minimum values are indicated as guides. 15 An area of 1999 bytes from the byte position 49 to 2047 is assigned to make a reservation area. The physical format information in the control data indicates the type and physical properties of the disk. The recording / playback device reads the information above so that the recording / reproducing apparatus is able to use the disk to properly perform a recording / reproduction operation. A-3: Oscillation Direction Format The disc in accordance with this mode has groove areas except for the area of enhancement, the groove areas having tracks that are formed previously by oscillation grooves. The oscillation slots express the absolute directions. Therefore, the recording / reproducing apparatus is capable of obtaining information including the absolute address of similar data by extracting signals corresponding to the state of oscillations of the slots when the disc is driven. # Figure 5 shows an example of the structure of the optical disc slot according to this embodiment. As shown schematically in Figure 5 (a) a spiral pre-slot 2 is formed in a disk slot area 1 in accordance with this embodiment in a direction from its linear periphery towards its outer periphery in the shape of a spiral. As a matter of course, the pre-groove 2 can be formed in a concentric configuration. As shown in Figure 5 (b) which is a partially amplified view thereof, the walls of the The right and left side of the pre-slot 2 are oscillated in accordance with the address information. That is, as will be described later, the side walls are allowed to snake in a predetermined cycle corresponding to an oscillation signal generated from compliance with the addresses. The portion between the adjacent slots 2 is formed in a flat part 3. The data is recorded in the slots 2. Therefore, the slope of the track is the distance from the center of the slot to the center of its adjacent slot 2. As shown in Figure 6 (a) the slope of the track is made to be 0.8 micrometer. The width of the slot (the width of the lower portion of slot 2) is made to be 0.48 micrometer. Therefore, the width of the groove 2 is greater than that of the flat part 3. As shown in Figure 5 (b), the groove 2 is allowed to meander. The amount of meandering (oscillation) is defined with a value of an oscillation amplitude WW which is shown in Figure 6 (b). The disk 1 according to this embodiment has a structure so that the amplitude of oscillation WW is 12.5 nm. The amount of oscillation of the groove is instantly enlarged to a certain interval cycle, the amplified amount of oscillation being a fine clock mark which will be described later. The amplitude of oscillation in the aforementioned portion, for example, is from about 25 nm to about 30 nm. A track (a track wheel) has a plurality of oscillation direction frames.

* The oscillation direction table, as shown in Figure 7, is divided into eight sections in a direction in which the disc is rotated, each section being a servo-segment (segment 0 to segment 7). 5 A servo-segment (hereinafter simply called segment) includes the 48-bit information constituted by the absolute address. The oscillation for each segment has 360 waves. In each oscillation direction box that serves as each segment (segment 0 to segment 7) an oscillation slot is formed because the 48-bit oscillation data is modulated by FM. The aforementioned fine clock marks are formed in the oscillation groove at the same interval to be used when a reference clock is generated by the PLL circuit when an operation is performed to record the data. Ninety-six fine clock marks are formed by rotating the disk. Therefore, twelve fine clock marks are formed per segment. Each oscillation direction frame that serves as a segment (segment 0 to segment 7) has a structure shown in Figure 9. In the 48-bit oscillation direction box, the first four bits are composed of a signal of synchronization (Sync) indicating the beginning of the oscillation direction box. The four-bit synchronization pattern is the bi-phase data that forms the 4-bit data with an 8-channel bit. The next four bits form the layer information (Layer) indicating any layer between a plurality of record layers or the layer structure of the disk. The next twenty-four bits form the track address (the track number) which is the absolute address on the disk. The next four bits indicate the segment number. The values of the segment numbers are from "0" to "7" corresponding to segment 0 to the segment 7. That is, the segment number is a value that indicates the position for the circumferential direction of the disk. The next two bits are used as a reservation. In the fourteen bits in the final portion of the oscillation direction box, an error detection code (CRC) is formed. As described above, fine clock marks are formed at the same interval in the oscillation direction box. Figure 8 shows a state of the fine clock mark. In each oscillation direction frame, 48 bit data is recorded. One bit, as shown * in Figure 8, is expressed by seven waves (carriers) between the signals having a predetermined frequency. In a painting, there are 360 waves. Assuming that the optical disk 1 is rotated at 5 1939 times per minute, the frequency of the carrier is 93.1 Khz. As shown in Figure 8, in the box of the direction of oscillation shown in Figure 9, one bit is allocated for each 4 bits of the address information for the fine clock mark, i.e. the mark of fine clock is superimposed on a bit of four bits that constitute a cycle. The first bit in the unit composed of four bits is a bit that includes the fine clock mark. The three residual 15 bits are bits that do not include the fine clock mark. An amplified form of the bit including the fine clock mark is shown in a lower portion of Figure 8. As shown in the figure, a waveform serving as a fine clock mark FCK is included, at the central position. of the length of the data bit. The meandering way of slot 2 on the disk 1 is formed in such a way that the amplitude WW of oscillation of the portion corresponding to the fine clock mark FCK is enlarged instantaneously for example, until approximately 30 nm.

In one frame, 12 fine clock marks are recorded at three-bit intervals. Therefore, 96 fine clock marks (= 12 x 8) are recorded in one rotation (one track). The fine clock mark (a PLL clock that is generated from the fine clock mark of the recording / reproducing apparatus) can be made to be the information indicating the circumferential position more accurately than the segment number. 10 The carrier frequency of each 48-bit data is a value corresponding to each data. Each data, for example, of the track number or similar is modulated in a bi-phase and then modulated in frequency. The pre-slot is oscillated with the wave, the frequency of which has been modulated. A-4: Reason for Establishing a Physical Format The physical format of the disc in accordance with this modality is graded as described above. The reason why the aforementioned format 20 is graduated as described above and an effect obtainable in this way will be described below. The reason why the track inclination is 0.8 micrometer, and the linear density is 0.35 * micrometer per bit and the amplitude WW of oscillation is 12.5 nm, will now be described. Initially the values of the wavelength of the laser beam satisfy? = 650 nm and AN = 0.6, as shown in Figure 1, will be taken into account. In addition, the assumption will be made that a recording capacity of 3 Gbytes is obtained on a disk that has a diameter of 120 millimeters. In this way, a calculation is carried out so that a fact is found that a track illumination of approximately 0.8 micrometer is required to obtain 3 Gbytes. A preferred linear density is taken into account when carrying out a CLD registration operation in a state in which the assumption is made that the track inclination is 0.8 micrometer. Figure 10 shows a result for measuring the fluctuations of the reproduced data at various linear densities in a state in which the inclination of the track 20 is 0.8 micrometer. A solid line curve shows a result in a case where crosstalk is not performed while a claim line curve of a point shows a result in a case where crosstalk is performed. He The state in which crosstalk is not performed is a state in which the data is not recorded in the track adjacent to the track to be inspected. Therefore, the reproduced data of the track to be inspected contains a certain amount of the crosstalk component. The state in which crosstalk is not performed is a state in which the data is not recorded in the track adjacent to the track to be inspected. Therefore, the reproduced data of the track to be inspected does not contain any crosstalk components. As will be understood from the previous figure, the fluctuations do not increase / decrease rapidly in a direction towards low densities from a limit that is approximately a linear density of 0.35 micrometer per bit. In a portion in which the linear density exceeds 0.35 micrometer per bit, the fluctuations tend to increase rapidly. That is, a region of linear density at about 0.35 micrometer per bit is a preferred region in view of the fluctuations. Since the density is as high as possible, the linear density of 0.35 micrometer per bit graduates in this mode. Then, an amount of the oscillation amplitude is considered in a state in which the slope of the track is 0.8 micrometer and the linear density is 0.35 micrometer per bit.

F Figure 11 shows the relationship between C / N (Carrier / Noise ratio) of the oscillation and the amount of oscillation amplitude. As will be understood from this figure, C / N is improved in proportion to the amount of oscillation amplitude. That is, in proportion to the amount of oscillation amplitude, the error rate is improved by decoding the absolute direction. In proportion to the amount of the amplitude of oscillation C / N deteriorates. Therefore, the steering error regime deteriorates. If C / N is made so that 23 dB or less, the address error is made to be of a value greater than a permissible value. Therefore, the amount of the oscillation amplitude must be 10 nm or greater. On the other hand, Figure 12 shows the relationship between the obliquity range of the direction of oscillation and the amount of oscillation amplitude. That is, a limit is shown with which the address can be decoded satisfactorily with respect to a disc inclination state 20. It is preferred that the obliquity margin be large. As will be understood in the figure, the obliquity margin deteriorates when the amount of oscillation amplitude exceeds 15 nm. As a result of the previously mentioned inspection 25, a preferred amount of oscillation amplitude from 10 nm to 15 nm. In this mode the amplitude WW of oscillation is made to be 12.5_nm. which is included in the scale mentioned above. When determining the amount of the oscillation amplitude as described above, it is considered whether or not the 0.8 micrometer track inclination is an appropriate value. Also in this case, the obliquity margin is used as the function of calculating the address error. Figure 13 shows the relationship between the track inclination and the steering error. Figure 13 (a) shows a state in which the track inclination is small, while Figure 13 (b) shows a state in which the track inclination is large. The axis of the ordinate represents the level (percentage) of the direction error and the axis of the abscissa represents a value (degree of radial obliquity) Here, the width corresponding to 10 percent of the direction error is the obliquity margin In the case shown in Figure 13 (a) for example, the obliquity margin is about ± 0.9 °, in the case shown in Figure 13 (b), the obliquity margin is about ± 1.2 °.

- - As will be understood from the figures, the obliquity margin deteriorates as the inclination of the track is narrower. Figure 14 shows the obliquity margins 5 with respect to the different track inclinations. as the picture shows, the obliquity margin deteriorates when the inclination of the track becomes narrower compared to a portion in which the inclination of the track is approximately 0.80 10 micrometer. From this it can be understood that the inclination of the preferred track is about 0.80 micrometer. Even when the scale of 0.74 micrometer to 0.82 micrometer is a permissible scale like the margin of Obliqueness as shown in Figure 14, the especially preferred value between this scale is approximately 0.80 micrometer. That is, as the specifications capable of obtaining 3 Gbyte, it can be understood that the specification 20 of this modality that the inclination of the track is 0.8 micrometer, the linear density is 0.35 micrometer per bit and the amplitude WW of oscillation is of 12.5 nm, is one of the "optimal" specifications, therefore, this mode is able to obtain a satisfactory format to obtain a required registration capacity and obtain reliability to extract the absolute direction of the oscillation slot and lead to performed a data decoding operation and the like in accordance with this modality and that is formulated as described above, it can be satisfactorily driven by a recording / reproducing apparatus while maintaining the ~ * É compatibility, for example, with a DVD-ROM because the content of the format is identified in the data of control. As described above, the track inclination and the linear density as the physical format information in the control data are recorded as the recording density information in the 3 position of the byte. With information of the type of book in the position of byte 0, a fact that the disk is a disk that has specifications in which the slope of the track is 0.8 micrometer, the linear density is 0.35 micrometer 20 per bit, and the Width of oscillation WW is 12.5 nm, it is caused to be identified. As a matter of course, the type of book can also function as information with which the optical disc can be identified, that is, the optical disc is a disc that has a structure that the track on which the data is recorded has previously been formed as a phase change recording region, the track is oscillated with a signal obtained by the frequency modulation carrier having a predetermined frequency for that corresponds to the direction information and the oscillation that serves as the address information is formed to correspond to the constant angular velocity. Also, in the byte positions 33 to 48, # > Record the recommended information to the first, second and third linear speeds. As a result of this, a fact is expressed that the disc according to this embodiment employs a peculiar zoning format which will be described later to obtain that the CLD method is adjusted to the linear density of 0.35 micrometer per bit.

Likewise, the aforementioned structure allows the disc to identify that the disc is prepared in format by a method according to this modality. [B] Cutter Apparatus 20 A method for cutting the disk having the aforementioned physical format will now be described. A process for manufacturing a disk comprises a so-called master disk process (a master process) and a disk work process (a duplication process) in approximate classification. The master process is a process # to complete a metal master (a die cutter) to be used in the working process of the disk. The working process of the disk is a process to mass produce optical discs that are duplicate products using the die cutter. Specifically, the so-called cutting is carried out in the master process which has the steps of coating a photoresist material on a polished glass substrate and exposing a formed photosensitive film to a laser beam so that a pit and a pinhole are formed. groove. In this embodiment, the cutting of the sting is carried out in a portion corresponding to the area of disc enhancement and the cutting of the oscillation slot is carried out in a portion corresponding to the groove area. The data of the bite in the enhancement area is prepared in a preparation process called pre-training. After the cut is completed, the predetermined processes including the development of peers are carried out. Then, the information is transferred to the metal surface by for example electromolded so that a die cutter required to manufacture discs by duplication can be manufactured.

Then, the die cutter is used to transfer the information on a resin substrate by for example an injection method or the like, if a reflective film is formed therein. Then, a process is carried out to treat the substrate in a required form of the disk so that the final products are manufactured. The cutting apparatus, for example, as shown in Figure 15 is formed of an optical unit 70 for irradiating a laser beam on a glass substrate 71 having the photoresist material to thereby carry out the cutting; a driving unit 80 for rotating the glass substrate 71, and a signal processing unit 60 for converting the admitted data into recording data and controlling the optical unit 70 and the driving unit 80. The optical unit 70 incorporates a laser source 72 which is prepared, for example, from a He-Cd laser; an acoustic-optical modulator 73 (AOM) for modular (connect / disconnect) a laser beam emitted from the laser source 72 in accordance with the registration data; an acousto-optical deflector 74 (AOD) for deflecting the laser beam emitted from the source 72 of the laser beam in response to an oscillation signal; a prism 75 for bending the optical axis of the modulated beam transmitted from the optical baffle 74; and an objective lens 76 for converging the reflected modulated beam by the prism 75 to irradiate the modulated beam on the surface of the photoresist material of the glass substrate 71. The drive unit 80 incorporates a motor 81 for rotating the glass substrate 71; an FG 82 for generating a pulse of FG to detect the rotation speed of the motor 81; a slide motor 83 for sliding the glass substrate 71 in the radial direction of the glass substrate; and a servo controller 84 for control the rotational speeds of the motor 81 and the slider motor 83 and the objective lens 76 tracking and so on. The signal processing portion 40 incorporates a format preparation circuit 61 for adding for example an error correction code or similar to the data of the source supplied from for example a computer in order to form an input data; a logic calculation circuit 62 for submitting the data supplied from the preparation circuit 61 formats towards a predetermined calculation in order to form the registration data; an oscillation signal generator circuit 63 for generating an oscillation signal to oscillate the slot; a signal generator signal circuit 64 for generating a signal to form the clock mark fine; a synthesizing circuit 65; and a driver circuit 68 for driving the optical modulator 73 and the optical baffle 74 in response to a signal supplied from the synthesis circuit 65; a clock generator 66 for supplying a clock to the logic calculation circuit 62 and so on; and a system controller 67 for controlling the servo controller 84 and so on in response to the supplied clock. When the cutting process is carried out by the cutting apparatus, the servo controller 84 causes the motor 81 to rotate the glass substrate 71 at a constant angular velocity as well as for the sliding motor 83 to slide the glass substrate 71 in such a way that a spiral track is formed at a predetermined track inclination while the rotation of the glass substrate 71 is maintained. Simultaneously, a laser beam emitted from the laser source 72 is allowed to pass through the optical modulator 73 and the optical baffle 74 so that it can be formed in a beam modulated in accordance with the registration data and then irradiated on the surface of the photoresist material of the glass substrate 71 from the objective lens 76. In this way, the photoresist is exposed to light in accordance with the data and the slot.

On the other hand, the input data to which the error correction code is added and so on by the format forming circuit 61, that is, the data such as the control data or the like, which is recorded in the highlighting area is supplied to the logic calculation circuit 62 to be formed in a registration data. During the synchronization at which the highlighting area is carried out, the registration data is supplied by the driving circuit 68 through the synthesizing circuit 65. The driving circuit 68 controls the optical modulator 73 to connect it during a bit synchronization where a pit should be formed in accordance with the registration data. A bit synchronization at which the sting is not formed, and the optical modulator 73 is controlled to disconnect. During the cut synchronization for the slot area, the synthesizing circuit 65 synthesizes a signal corresponding to the fine clock mark transmitted from the marking signal generating circuit 64 with a signal transmitted from the signal generator generating circuit 63. oscillation, that is, a signal obtained by frequency modulation of the absolute direction to supply the same to the driving circuit 68 as a signal to form the oscillation. The driving circuit 68 controls the optical modulator 73 to be continuously connected in order to form the slot. In addition, the driving circuit 68 operates the optical baffle 74 in response to the signal supplied for oscillation. As a result, the laser beam is allowed to meander so as to oscillate the portions that will be exposed to light as slots. As a result of the aforementioned operation, the exposed portions corresponding to the grooves of grooves / embossments are formed in the glass substrate 41 in accordance with the format. Then, the development, electromodulation and so on are carried out so that a punching machine is manufactured. Using the die cutter, the aforementioned disk is manufactured. The oscillation signal generating circuit 63 and the signal generator generating circuit 64, which are provided in order to form the oscillation grooves including the absolute directions, will now be described. Figure 16 shows an example of the structure of the circuit 63 generating the oscillation signal to generate the oscillation signal to oscillate the slots. A generator circuit 11 generates a signal having a frequency of 372.4 Khz.

The signal generated by the generation circuit 11 is supplied to a divider circuit 12 so that it is divided by a value of "15". Then, the result of the division, as a bi-phase clock signal having a frequency of 24.8 Khz, is supplied to a bi-clock signal having a frequency of 24.8 Khz supplied to a bi-modulator circuit 13. phase. In addition, the bi-phase modulation circuit 13 is supplied with the ADIP (Address in the Pre-Slot) data as the address data. The bi-phase modulation circuit 13 modulates in bi-phase the bi-phase clock supplied from the divider 12 with the ADIP data supplied from a circuit (not shown) in order to transmit a bi-phase signal to a 15 modulation FM circuit. In addition, the FM modulation circuit 15 is supplied with a carrier obtained by dividing the signal generated by the generator circuit 11 and having a frequency of 372.4 Khz with a value of "4" by a divider 14, the carrier having a frequency of 93.1 Khz. The FM modulator circuit 15 modulates the frequency of the carrier supplied from the splitter 14 with a bi-phase signal supplied from the bi-phase modulation circuit 13. Then, the FM modulator circuit sends an FMN signal obtained, that is, as a signal 13 - of oscillation containing the absolute address to the synthesis circuit 65. As a result of the aforementioned cutting apparatus, the right and left side walls of the groove 2 of the disk 1 are formed (oscillated) to correspond to the oscillation signal formed by the frequency modulation. Figures 17 and 18 show an example of the bi-phase signal sent from the bi-phase modulation circuit 13. In this example, when the previous bit is 0, "11101000" is used as the synchronization pattern (SYNC), as shown in Figure 17, whereas when the previous bit is 1, "00010111" is used which has a phase opposite to that shown in Figure 17 as the synchronization pattern. The synchronization pattern (SYNC) is a unique pattern that does not appear through modulation and does not follow the rule. As shown in the figures, "0" of the data bits of the absolute address data (ADIP data) is modulated in bi-phase in order to become a bit of the channel "11" (when the previous channel bit is 0) or "00" (when the previous channel bit is 1). - "1" in the data bit becomes channel bit "10" (when the previous channel bit is 0) or "01" (when the previous channel bit is 1). When the conversion is any of the two patterns, it depends on the previous code. That is, the "Waveform" shown in Figures 17 and 18 shows the patterns of channel bits 1 and 0 in such a way that 1 represents a high level and 0 represents a high level. Either of the two patterns is selected such that the aforementioned waveform is continued. As shown in Figure 19, the FM modulation circuit 15, modulates in frequency the carrier supplied from the splitter 14 to correspond to the bi-phase signal, as shown in Figure 17 or the Figure 18. That is, when the channel bit data (the bi-phase signal) is "0", the FM modulation circuit 15 sends 3.5 waves of the carrier in a period that corresponds to half of the length of a data bit. The 3.5 waves of the carrier start at a positive half wave or a negative half wave. When the data of the channel bit (the bi- phase signal) is "1", on the other hand the four waves of the carrier are sent in a period that corresponds to half the length of a data bit. Likewise, the four waves of the carrier begin in the middle of the positive wave or half of the negative wave. Correspondingly, when the 5 channel data bit "00" is supplied to the FM modulation circuit 15 to correspond to the data bit "0", the FM modulation circuit 15 sends seven waves (= 3.5 + 3.5) of the frequency modulation wave in a period corresponding to the length of the data bit. When supplies the data bit of channel "11", the circuit sends 8 waves (= 4 + 4) of frequency modulation wave. When the channel data bit "10" or "01" is supplied to correspond to the data bit "1", 7.5 waves (= 4 + 3.5 = 3.5 + 4) of modulation wave are sent of frequency. The carrier having the frequency of 93.1 Khz that is supplied to the FM modulation circuit 15 corresponds to 7.5 waves. The FM modulation circuit 15 corresponds to a data in order to generate 7.5 waves of the carrier or seven or eight frequency modulation waves obtained by moving the same waves by ± 6.20 percent. As described above, any of the carriers corresponding to the channel 0 data and the data from channel 1, starting at the positive half wave and the negative half wave respectively and continuing from the previous signal, is the one that is selected. Figure 20 shows an example of the frequency modulation wave sent in this way from the FM modulation circuit 15. In this example, the first data bit is "0" and its channel data bit is "00". With respect to the first data bit of channel "0", 3.5 waves of the carrier have been selected starting at the starting point with the positive half wave. As a result, the carrier has finished on the positive half wave. Then, 3.5 waves starting with the negative half wave are selected with respect to the next bit "0" of channel data. In this way, seven frequency modulation waves are selected with respect to the data bit "0". The data bit "1" (data bit "10") follows the data bit "0". Since 3.5 waves of the channel data bit "0" corresponding to the previous data bit "0" are terminated with the negative half wave, a carrier that begins with the positive half wave is selected as the four carrier waves of the carrier of the first bit "1" of channel data corresponding to the data bit "1". Since the four waves of the channel data bit "1" are terminated with the negative half-wave, a wave that begins with the positive half-wave is selected as the next four waves of the channel data "0" bit. Then, a similar process is carried out so that 7.5 waves, 8 waves and 7 waves, of the carriers 5 that correspond to the data bit "1" (channel data bit "10"), to the data bit " 0"(channel data bit" 11") and data bit" 0"(channel data bit" 00") are formed and sent in such a way that the carriers that continue in the limit (the data points) beginning and ending). 10 As shown in Figure 20, this modality has a structure in which the length of the channel bit is an integral multiple of half the carrier's wavelength in any of the 7 waves, 7.5 waves and 8 waves of the carriers. That is, the bit length of channel is seven times half the wavelength of the seven waves of the carriers (frequency modulation waves) and eight times half the wavelength of the eight waves of the carriers (frequency modulation waves) . The length of the channel bit is seven times (when the channel bit is "0") or eight times (when the channel bit is "1") half the wavelength of the 7.5 waves of the carriers. In this mode, the limit portion (start or end point) of the bi-phase modulated channel bit is makes it a crossing point of 0 and the frequency modulation wave. As a result, the base of the address data (channel bit data) and that of the FM wave are matched to one another. Therefore, the limiting portion of the bits can be easily distinguished. Therefore, erroneous detection of the address data bit can be prevented. As a result, the address information can be easily reproduced exactly. In this mode, the limit portion (start and end points) of the data bits and the edge (the zero crossing point) of the frequency modulation wave correspond to each other. As a result, a clock can be generated in such a way that the edge of the frequency modulation wave is used as a reference. In this mode, for example, as shown in Figures 21 (a) to 18 (d), when the channel bit data is "00" (data "0"), "11" (data "0") , "10" (data "1") or "01" (data "1", a fine clock mark is synthesized which has a frequency higher than the frequency modulation frequency (93.1 Khz) of the address information in the portion of the zero crossing point of the carrier at the center (switching point of the channel bit) of the respective data Figure 21 shows an oscillation signal having the fine clock marks added to each four data bits. The synthesizing circuit 65 synthesizes a signal supplied from the marking signal generating circuit 64 to the oscillation signal (the frequency modulation wave) supplied from a oscillation signal generator circuit 63 in order to generate a signal 5 as shown in FIG. shown in Figure 21 at a once-by-four-bit rate. The fine clock is inserted at the zero crossing point of the wave ^ W oscillation frequency modulation which corresponds to the center (the switching point of the channel data bit) of the address data bit. In this way, the fluctuation in the amplitude of the fine clock mark can be reduced and therefore, the fine clock mark can be easily detected. 15 If the frequency modulation is carried out by the FM modulation circuit 15 mentioned above in such a way that the frequency is shifted from the center frequency by -5 percent when the channel data bit is zero and when the frequency is shifted from the center frequency by + 5 percent when the channel data bit is 1, the limiting portion of the data bit or channel data bit and the zero crossing point of the frequency modulation wave they do not match one another Therefore, the bit of channel data (or data bit) can be detected ** ^ - ^ f easily in the wrong way. The insertion point of the fine clock mark is not always the zero crossing point. The fine clock mark overlaps at a point in the frequency modulation wave that has a value of predetermined amplitude. As a result, the level of the fine clock mark is raised or lowered by an amount corresponding to the value of the amplitude. In this way a phenomenon is obtained in which the * detection of it. However, this embodiment with which the fine clock mark is placed at a position of the zero crossing point of the frequency modulation wave has an advantage that its detection or identification of the frequency modulation wave can be easily done [C] Optical Disc Format C-1: Format of the Sector. The logical format of the data to be recorded will now be described. In this mode, a group 20 is constituted by 32 Kbytes. The grouping is used as a unit when the data is recorded. The 32 Kbytes correspond to the ECC block mentioned above. A group consists of 16 sectors. As shown in Figure 22, the data of 2 25 Kbyte (2048 bytes) is extracted as the data for a sector and then an excess of 16 bytes is added to the data for a sector. The excess includes a sector address (an address generated or read by an address generation read circuit 35 to be described later with reference to Figure 37), an error detection code for detecting an error, and so on. . The data of 2064 (= 2048 + 16) bytes in total is the data (one sector) in 12 x 172 (= 2064) bytes formed in 10 a line shown in Figure 23. The sixteen data for a sector are collected in a way that the data in an amount of 192 (= 12 x 16) x 172 bytes shown in the figure is constituted. An internal code of 10 bytes (Pl) and a code external of 16 bytes (PO) are added to the data in the amount of 192 x 172 bytes in such a way that the codes are added to each of the bytes in the horizontal and vertical directions as parities. Between the data formed in this way blocked in 20 208 x 182 bytes (= (192 + 16) x (172 + 10)) in total, the external code (PO) in an amount of 16 x 182 bytes is divided into sixteen data in an amount of 1 x 182 bytes. As shown in Figure 24, each data is added to a position below 12 x 182 bytes of sixteen sector data having number 0 to number 15 to be interleaved. Then, in an amount of 13 (= 12 + 1) x 182 bytes, it becomes a data for a sector. The data shown in Figure 26 and having an amount of 208 x 182 bytes, as shown in Figure 25, is divided into two sections in the vertical direction so that a frame is constituted by 91 byte data and so that a data of 208 (row) x 2 (frame) is formed. A link section 13 (row) x 2 (frame) (link area data) is added to the front end of each data in an amount of 208 x 2 frames. More exactly, a portion of the data of the link section for 26 frames is recorded in at least the previous grouping, as described below with reference to Figure 31. The other portion is recorded at the head of the present grouping. In addition, a two-byte frame synchronization (FS) signal is added to the data head of the 91-byte frame. As a result, the data for a table is made to be 93 byte data, as shown in Figure 25. Therefore, a row is formed 221 x 93 x 2 bytes in total, that is, the data for a block for 442 paintings.

# The aforementioned data is made to be a data for a group (the block that is a unit for registration). The size of the actual data portion except for the high portion is 32 Kbytes (= 2048 x 16/1024 Kbytes). As described above, a group consists of 16 sectors, and a sector consists of 26 tables. C-2: Link Section 10 The aforementioned data is recorded on disk 1 in a grouping unit. The link section shown in Figure 26 is placed between the cluster and the cluster. The link section is constituted by 26 frames, that is, the size of the link section is the same as that of a sector mentioned above. The link section is inserted in the portion between the 32 Kbytes groupings (the blogs). In fact, the division is carried out at the link point at the end of the registration operation of the group which is the block (N) and the starting point of the block registration (N + 1). Figure 27 shows the types (SYO to SY7) of the synchronization signal for each frame of the link section and the content of the data.

As shown in the Figure, the AUX data is sometimes recorded in a default box as well as all zero data. The portion is sometimes used to control the laser power. Types of a signal synchronization of the table will be described later. Figure 28 shows a state of the link section that is formed between the groupings. The data such as the Slice / PLL data and the data such as the frame synchronization signals SY1 to 10 SY7 and the like are, as the link section (the portion after the link point) that is formed in the portion of head of the 32 Kbyte data block, which is recorded in each cluster. The post-walking PA and post-protection regions are formed adjacent to the data block of 32 15 Kbyte which is the main body of the cluster as the link section (the portion before the link point) on the back end side of the cluster. the grouping. Since the slice data is the data to be used to set a time constant for the binary coding reproduction data, while the PLL data is the data to reproduce the clock. As for the frame synchronization signals (sync frame) SY1 to SY7, any of the states 1 to 4 is selected and added as will be described later with reference to Figure 31. ^ f The data to adjust the length of the mark for the final data return the polarity of the signal is recorded in the pos-walking PA. The post-protection is an area to absorb the 5 register fluctuations that are generated due to the eccentricity of the disk, the sensitivity of the disk registration and so on. The post-protection has a function to prevent the interference of the data with a link area where the data will be recorded adjacent even if the starting position of record of the data is changed as will be described later. The post-protection is recorded in such a way that only 8 bytes overlap adjacent to the data when no fluctuation is made and DPS (Data Position Shift) to be described later in byte 0. The synchronization signal (sync) is a 4-byte data and a signal to establish synchronization. The final four bytes of the link section are kept (reserved) for future use. 20 The registration of information in each grouping is started at the link point. When the record exceeds (overlaps) the link point by eight bytes, the record is completed. When the registration is carried out, the registration / reproduction circuit 33 of a The recording / reproducing apparatus to be described below randomly selects any of the values from byte 0 to 64 bytes, such as DPS. In accordance with the selected DPS value, the registration positions for the data in the link area and the 32 Kbyte blogue data are changed. If a byte 0 is selected as the DPS as shown in Figure 28 which is an amplified view, a link data of 14 bytes is added in a forward position of the SY1 synchronization signal of the first box of the front link section. In addition, an 85-byte link data is added to a position on the back of the final frame synchronization signal SY5 of the back link section. If 32 bytes are selected as the DPS, the data of the 46 bytes link is added to the position in front of the first sync signal SY1 of the frame of the front link section. In addition, a 53-byte link data is added to the position on the back of the synchronization signal SY5 of the final frame of the link section later. Further, when 64 bytes are selected as DPS, the 78-byte link data is added to the forward position of the first sync signal SY1 of the frame of the front link section. In addition, a 21-byte link data is added to the position on the back of the sync signal SY5 of the final frame of the back link section. As described above, in accordance with the DPS value that is selected by the register / playback circuit 33, the positions at which the link data and the 32 Kbyte data block are recorded are changed. In this way, when the information is recorded on the phase change disk, repeated registration of the same data (for example, the frame synchronization signal and so on) on the same portion of the disk can be prevented. As a result, the duration of the disk, which is evaluated by the number of the record number repeated several times, can be lengthened. Since the link point is fixed at that time, the generation of the registration synchronization can be carried out in a manner similar to the conventional structure. C-3: Frame Synchronization Signal For each frame constituting the grouping / sector it is added with the frame synchronization signal in the head position thereof, including the frame of the link section mentioned above. The types of frame synchronization signals are SYO to SY7.

Figure 29 shows the structure of a frame synchronization signal for a ROM disk (eg, a DVD-ROM) that can be used compatible with the disk according to this embodiment in the recording / reproducing apparatus of the present embodiment which will be described later. Also, the ROM disk has the structure that a sector is composed of the data in 13 rows (lines) that is, 26 frames. In addition, the frame synchronization signals (SYO to SY7) are added to the head of each box. Note that the ROM disk does not have a link section. The frame synchronization signals are set in each of the 26 frames starting from the front frame as SYO, SY5, SY1, SY5, SY2, SY5, ..., SY3, SY7, SY4 and SY7 as shown in the figure. On the other hand, the structure of the frame synchronization signal of the disk according to this modality, is shown in Figure 30. A sector is composed of 13 rows (lines), that is, 26 frames. The frame synchronization signals (SYO to SY7) are added to the head of each frame. Likewise, the link section has a size corresponding to a sector. In each sector and the link section, the frame synchronization signals are established in each one of the 26 frames starting from the front frame such as SYO, SY5, SY1, SY5, SY2, SY5, ..., SY3, SY7, SY4 and SY7 as shown in the figure. From a point of view of the sector unit, on the ROM disk and the disk in accordance with this mode, the types of frame synchronization are of the same pattern (array) including the link section. As a result of the aforementioned structure, the RAM disk can be reproduced by a reproduction apparatus adapted to only the ROM disk.

That is, the playback apparatus adapted only to the ROM disk is positioned in such a way that when the eight frame synchronization signals SY1, SY7, SY2, SY7, SY3, SY7, SY4 and SY7 are stored from the tenth row to the row The block of the data block is detected, a fact that the next data is the head portion of the data block is placed to be recognized. Therefore, the eight frame synchronization signals are stored in the link area so that the head portion of the data area after the link area is recognize by the reproduction apparatus. Figure 31 shows an example of the frame synchronization signals SYO to SY7. Even though the frame synchronization signal is the two-byte data, the length of each frame synchronization signal is 32 bits (4 bytes) because the data has already been converted into the channel bit data as it is. shows in this modality. For example, there are types of states from 1 to 4 in SYO. The data of a state is selected with which a DSV (Digital Sum Value) is reduced to the minimum when the addition to the frame data is carried out in an amount of 91 bytes (see Figure 25). Therefore, the selected data is added from the frame synchronization signal. C-4: Reason for Establishing a Liaison Section As described above, the liaison section is a region that has an area that corresponds to a sector. As a result of the aforementioned format, the following effects can be obtained. The link section has another function that serves as an area to establish synchronization with a record or playback clock before carrying out the registration or reproduction of the actual data as the grouping. Therefore, the link section is required to have a size large enough to generate the clock to be used in the recording / reproduction apparatus. In general, the PLL circuit for extracting a reproduction clock has a somewhat prolonged time constant in order to prevent the clock from being disturbed which occurs due to damage to the disc surface and so on successively. Therefore, the determined size of the link section corresponding to a sector is a preferred length in view of generating the clock. That is, the aforementioned length is a preferred length 5 when the disc according to this embodiment is reproduced by one of the various reproduction apparatuses (e.g., the DVD-ROM turntable) or the like. Since the link section has the size which corresponds to a sector, likewise the signal processing system in the recording / reproducing apparatus is not required to carry out a complicated process. That is, the process to reproduce the data is carried out in such a way that the data in a unit of the sector is carried out and the error correction is made in a block as shown in Figure 25. If the size of the link section is not of a sector , the data read has a disk in a smaller data unit than a sector, is displaced by an amount corresponding to the link section. As a result, the structure of the circuit and the operation becomes too complicated. This modality has the structure that the link section is considered as the data for a The sector is able to simplify the process to omit, for example, the data related to the link section from the data to be read and a process to generate the data of the link section when the registration operation is carried out. cape. 5 [D] Zoning Format The disk in accordance with this mode carries out the CLD method through the CLD zone where the division of zone into a multiplicity of sections is carried out. 10 The zoning format will now be described. As shown in Figure 32, the disk according to this mode is divided into a plurality of zones (in this case, m + 2 zones from the zone 0 to the zone m + 1) to record or reproduce the data Assuming that the number of data frames (the data frames are different from the address frames described with reference to Figure 9 and are units of data blocks described with reference to Figure 25 20 per track in 0 the area is n, the number of data frames per track is (n + 1) in the next first zone, then similarly in an area on the peripheral side more outward, the number of data frames increases by one compared to the lateral zone adjacent internal peripheral. In the zone m, the number of data frames is (n +) and that in the peripheral zone it passes outwards, that is, the (m + l) zone, the number of data frames is n + (m + 1) The zone branches off in the radial position where a capacity of (n + 1) squares can be obtained in the peripheral linear density more inwards which is the same as that of the previous zone. That is, the radial position at which tables of capacity of (n + 1) can be obtained at the same linear density that is equal to the peripheral linear density most inwards at 0, the zone is the starting point for the first zone. Similarly, the starting position of the zone is in the radial position at which the capacity of the squares (n + ra) can be obtained at the same linear density as the peripheral linear density plus in the zone. When the disc 1 according to this modality has the diameter of 120 millimeters, the areas capable of registering formed from the radial position of 24 millimeters to 58 millimeters, the slope of the track of 0.80 micrometer and the linear density of 0.351 micrometer per bit , the area capable of registering is divided into zones in 815 zones from 0 zone to 814 zone, as shown in Figure 33.

In the O, the zone, which starts at the radial position of 24 millimeters a track (one rotation) has 578 frames. One frame per track each increases when the area is increased by one each. 5 As described above, this modality has the structure that a sector is composed of 26 tables (data tables). Therefore, Fj? the number (= 1) of frames that increases in each zone is made to be of a value smaller than the number (= 26) of the tables that constitute a sector. As a result, a larger number of zones with a finer unit can be formed. In this way, the capacity of disk 1 can be enlarged. The aforementioned method is called a Zoned CLD (Linear Density) Zoning Constant). When the CLD method is used, the clock frequency must be changed linearly to correspond to the radial position of the disk as indicated by the solid line shown in Figure 34. However, the The aforementioned control can not be carried out easily (which is not impossible) and the same is not really required. Therefore, this embodiment has a structure that the clock frequency is changed in a staggered manner as indicated schematically with a line of scripts. Therefore, an IW method 'basically similar to Zoned CAV is employed. However, the zone is sectioned into a multiplicity, for example, of 815 zones so as to reduce the amount of change in linear density within the zone. Therefore, as the Zoned CLD method, the linear density is made to be of an essentially constant value of about 0.35 micrometer per bit as a center. The detailed parameters for each zone are shown in Figures 35 and 36. All parameters for all 815 zones are omitted from the description. Then, as far as the 0 th zone up to the 23 th zone and the area and as far as 796 th the area up to 814 th the zone show as examples. Referring to Figures 35 and 36, the data in each of the rows indicates each of the number of the zone, the radial position in which the zone initiation position is, the number of frames per track, the number of tracks per zone, the unit number of record / reproduction (block) (the number of groupings) per zone, the linear density within the zone, the capacity of the zone, the speed of rotation in the area, the minimum linear velocity of the zone and the maximum linear velocity of the zone. As described above, the zoning just like CLV is carried out so that * a change in the clock frequency between one zone and the next zone may be small. Even though the disc according to this embodiment is reproduced by a reproduction apparatus adapted for CLV only, a clock can be extracted between the zones where the clock frequency is changed. Therefore, the portion between the zones can be continuously reproduced. [E] Registration / Reproduction Apparatus * Figure 37 shows an example of the structure of an arrangement for recording / reproducing an optical disk for recording / reproducing the data to and from the disk 1 mentioned above. A spindle motor 31 rotates the disk 1 at a predetermined speed, i.e. carries out the CAV rotation. An optical head 32 irradiates disk 1 with a laser beam so that the data is recorded on disk 1 and reproduces the data in accordance with the light reflected from the disk. A register / playback circuit 33 causes the recorded data supplied from an apparatus (eg, a host computer) not shown to be temporarily stored in a memory 34. When the data for a grouping which is a registration unit has been stored in memory 34, the register / reproduction circuit reads F the data for a grouping therefrom in order to submit the read data to coding, such as interleaving, the addition of an error correction code, the modulation 8- 16 and so on, in order to generate the 5 data that will be recorded. Then, the record / playback circuit transmits the data that will be registered to the optical head in order to cause the The optical head 32 performs an operation to record the data on the disk 1. While the reproduction operation is carried out, the registration / reproduction circuit 33 submits the data obtained from the optical head 32 to decoding, such as of demodulation 8-16, a process of error correction, deinterleaving and so on, in order to output the decoded data to the apparatus (not shown). When the registration operation is carried out, a direction / read generator circuit 35 responds to a control from a control circuit 38 comprising, for example, For example, a microcomputer for generating an address (which is not the address to be recorded as the oscillation information) to be recorded in the track (a pre-slot 2) in order to send the address to the circuit 33 of registration / reproduction.

The registration / reproduction circuit 33 adds the address to the data to be registered in order to send it to the optical head 32 which will be registered as the address data. When the address data is included in the data reproduced from the track of the disc 1, the record / playback circuit 33 separates the address data from the reproduced data to send the address data to the address / address generator circuit 35. The address / read generator circuit 35 sends the read address to the control circuit 38. In addition, the address / read generator circuit 35 detects the frame synchronization signal SF (sync frame) in the data to send a result of the detection to a Sync frame counter FS (FS). Counter 49 FS counts the number of FS detection pulses sent from the address / read generation circuit 35 and sends its count value to the control circuit 38. A mark detection circuit 36 detects a component corresponding to the fine clock mark from an RF signal (the oscillation signal) reproduced by and sent from the optical head 32. A detection signal transmitted from the brand detection circuit 36 is supplied to the control circuit 38 and a marking period detection circuit 40. A segment address detection circuit 37 and a track direction detection circuit 48 detects the segment number and the track number from an oscillation signal sent from the optical head 32, respectively. As described above with reference to Figure 9, the 48-bit oscillation direction box has the track number (the track address) and the segment number (information about the circumferential position). The aforementioned numbers are detected by the track-direction detection circuit 48 and the segment-address detection circuit 37 and are then supplied to the control circuit 38. The detected track-address is also supplied to a grouping counter 46. The period-mark detection circuit 40 determines the periodicity of the detection pulses that are sent when the mark detection circuit 36 has detected the fine clock mark. That is to say, the fine clock mark is generated in a predetermined cycle (every four bits). Therefore, the mark period detection circuit determines whether or not the detection pulse supplied from the mark detection circuit 36 is a detection pulse generated in the predetermined cycle. If the detection pulse is the detection pulse generated in the predetermined cycle, the marking period detection circuit generates a pulse 5 synchronized with the detection pulse and sends the pulse to a phase comparator 42 of a 41 PLL circuit in the later stage. If the detection pulse is not supplied during the predetermined cycle, the detection circuit The marking period 10 generates a pseudopulse during a predetermined timing to prevent blocking of the next 41 PLL circuit to an incorrect phase. The circuit 41 PLL incorporates, in addition to the phase comparator 42, a low pass filter 43, a voltage controlled oscillator 44 (VCO) and a splitter 45. The phase comparator 42 submits the phase of an input T from the detection circuit 40 of the marking period and that of an input from the divider 45 to a comparison mode. of sending a phase error between same. The low pass filter 43 compensates for the phase of the phase error signal sent from the phase comparator 42 to send a compensation result to the VCO 44. The VCO 44 generates a clock in the phase corresponding to the output of the filter 43 of low weight in order to send the watch to the divider 45. The divider 45 divides the supplied clock F from the VCO 44 with a predetermined value and sends a result of the frequency division to the phase comparator 42. The clock sent from the VCO 44, like a record clock 5, is supplied to a required circuit and is also supplied to the cluster counter 46. The counter 46 of the array counts the number of clocks sent from VCO 44 in such a manner that the track address in the oscillation signal supplied from the track direction detection circuit 48 is used as a reference. If the counted value thereof reaches a predetermined value (a value corresponding to the length of a grouping), the grouping counter generates a start impulse of the grouping and sends the same to the control circuit 38. An engine 39 is controlled by the control circuit 38 in order to move the optical head 32 to a predetermined track position on the disk 1. The control circuit 38 controls the spindle motor 31 for spin disk 1 at a predetermined speed. A ROM 47 includes the track number in the address box, a frame to determine the relation to the zone formed by zoning the data registration region on disk 1 and, if necessary, a frame to determine the relation with the zone and the band to which the zone corresponds. The control circuit 38 controls the respective units of the apparatus to cause the registration / reproduction operation corresponding to the zoning format to be carried out. When the control circuit 38 acquires the jflt number of the sector indicating a point towards which an access is made, the control circuit carries out a process to replace the sector number with the track number and the track data box number. That is, in ROM 47, a table is stored showing the sector number, the zone number, as shown in Figure 39, the ECC block number, the number 15 of tables per zone, the track number, the number of boxes per track and so on. The control circuit 38 makes a reference to the frame to read the track number corresponding to the sector number instructed and the number of data frames in the track. On the other hand, the control circuit 38 detects the track number from the output of the track direction detection circuit 48, i.e. the present track direction that can be detected from the oscillation signal.

When a required track number (to which an access is made) is detected by the track direction detection circuit 48, the control circuit 38 detects the reference position for the track. As shown in Figure 40, the track number that serves as the oscillation information is recorded on disk 1. In addition, a clock synchronization mark is recorded in the address box of a track for a period of four bits . The control circuit 38 detects the fine clock mark inserted in the first bit of the 48 bits of the first address box (the address box having segment number 0) of a predetermined track, the fine clock mark being detected as the fine reference clock mark. When a fine clock mark which is served as the reference is detected by revolution of the track, the control circuit 38 resets the counter count of FS 49. Then the counter of FS 49 counts the frame synchronization signal when it is detected .- If the counted value of the FS 49 counter becomes the value corresponding to the sector number to be recovered, it makes a determination that the sector is the sector that must be recovered. When the recording is carried out in a predetermined sector, the control circuit 38 controls the record starting position of the record in the sector so that it is within a scale of (0 to 2) + 4 bytes from the junction synchronization from zero to the fine watch brand that serves as the reference. 5 As described above, the circuit 38 control is able to carry out the control in such a way that an access is made to the arbitrary position (in an arbitrary position in a rotation) in the track from the count value of the record clock of such way to use the clock synchronization mark that is detected first in the frame (of the address box) that has, for example, the number of frames 0 as a reference. That is, access is allowed in accordance with the track and the data frame unit. When an access to an arbitrary position on the track is made as described above, the zone to which the access point belongs must be determined. Also, the clock that has the frequency that corresponds to the zone, it must be generated by the VCO 44. The control circuit 38 carries out a clock switching process which is placed as shown in the flow chart shown in Figure 38. That is, initially in the step F101, the The control circuit 38 reads the track number from the address of the access point sent from the track direction detection circuit 48. Step F102, the control circuit reads from the frame stored in ROM 47, the area corresponding to the track number read in step F101. As described above, the frame stored in ROM 47 has the information about the zone between 0 to 814 the zones to which the tracks having the numbers belong. 10 In step F103 whether or not the track number read indicates a new zone that is different from the area to which access has been made so far. If a determination is made that the zone is a new zone, the operation proceeds to step F104 so that the circuit 38 control the divider 45 to cause the frequency division relationship corresponding to the new zone to be established. As a result, the record clocks having different frequencies depending on the respective zones, are sent from VCO 44. If a determination is made in step F103 that the present zone is not a new zone, the process in the step F104. That is, the frequency division ratio of the divider 45 is not changed so that the frequency of the present clock remains as it is.

In the process shown in Figure 38, a reference is made to the frame in ROM 47 according to the address (the track number) in order to determine the zone. Therefore, the frequency of the clock that must be generated is graduated. A structure in which the data in the frame stored in ROM 47 is not used (ie, it is unnecessary) and the clock frequency to be generated is determined by carrying out a predetermined calculation using the track number in order to establish a frequency division relationship. Even though the disc, the adaptive cutting apparatus and the recording / reproducing apparatus according to the modality have been described, the present invention is not limited to the previous example. As a matter of course, the values about the format and the non-relation to the thesis of the present invention can be varied. As described above, the optical recording medium according to the present invention has the structure that an amount of oscillation amplitude of the tracks is made to be of a value that satisfies 10 nm to 15 nm of a track inclination of the track that is made to be of a value that satisfies 0.74 micrometer to 0.82 micrometer. The aforementioned values allow a recording capacity of the predetermined data in the optical recording medium under a - 11 condition of a predetermined NA and a laser wavelength. In addition, the relationship between the amount of the amplitude of the oscillation and the inclination of the track is made to be of a value with which a satisfactory reproduction error rate of the address information and reproduction information can be obtained. . That is, an effect can be obtained since a new optical recording medium is provided with which a large recording capacity can be obtained without deterioration of registration / reproduction operation. In addition, the optical recording medium according to the present invention has the structure that oscillation is formed which serves as the address information in the track which serves as a phase change recording region which corresponds to the angular velocity constant. In addition, zoning is graded on the track in order to record the data at an essentially constant linear density. In addition, an area for recording the management information of the optical recording medium is formed in a predetermined position in the optical recording medium. As the administration information, the identification information is recorded which indicates at least one fact that the recording medium is a phase change recording means and that it has the addresses expressed by the oscillation tracks *. In addition, the information recommended for the registration / reproduction operation in the internal peripheral position and the external peripheral position is recorded. Therefore, an effect can be obtained since a recording / playback drive environment can be graduated to a satisfactory state because the function obtained to express the type of recording medium, the function to guide the preferred operation of ^^^ record / playback and the function to obtain the method of CLD satisfactorily. Since the value of the slope of the track and the value of the central linear density are recorded as the management information and the information with which the inclination of the track and the linear density central can be identified has been registered, the function can be improved to identify the type. In addition, the registration / reproduction operation can be guided satisfactorily. The optical recording medium or the method of The register according to the present invention has the structure that the link section is placed between the data block that serves as a data record unit with respect to the track and the adjacent data block. In addition, the size of the data in the section of The link is made to be equal to that of the minimum data unit (the sector) that constitutes the data block. Therefore, the process of the linking section (the process that is carried out by the recording / reproduction apparatus) required as the means of registration capable of being re-written can be simplified, of course. Since the aforementioned size is large enough to establish the synchronization AF of the PLL, an effect can be obtained that the function as the link section can be improved. Having described the preferred embodiments of the present invention with reference to the accompanying drawings, it should be understood that the present invention is not limited to the aforementioned embodiments and that various changes can be made therein. and modifications by a person skilled in the art without deviating from the spirit or scope of the present invention as defined in the appended claims.

Claims (10)

CLAIMS:

1. An optical recording medium in which a track where a data is to be recorded is formed 5 above and the track is oscillated with a signal obtained by frequency modulation of a carrier having a predetermined frequency corresponding to the direction information, wherein the track is an oscillation track having a number of amplitude from 10 nm to 15 nm and a track inclination from 0.74 micrometer to 0.82 micrometer.

2. An optical recording medium according to claim 1, wherein the track is formed from a slot, and a side wall of the slot is oscillated from 15 compliance with the address information.

3. An optical recording medium according to claim 2, wherein the slot has a depth of? / 8 where? is a wavelength of a laser light used to record the data in the slot or 20 play the data recorded in the slot.

4. An optical recording medium according to claim 2, wherein its diameter is taken as approximately 120 millimeters and a linear density of the recorded data is approximately 0.35 micrometer per bit, and has a recording capacity of at least 3.0 GB

5. An optical recording medium, comprising: a track that serves as a registration region of 5 phase change where the data that is formed above is recorded and the track is oscillated with a signal obtained by frequency modulation of a carrier m having a predetermined frequency to correspond to the address information and also the oscillation it serves as a direction information that is formed to correspond to the rotation having a constant angular velocity, and an area in which the administration information for the optical recording medium is recorded 15 at a predetermined position in the recording medium optical, and the management information includes identification information which indicates a type of a medium as a phase change registration means that has 20 a track that is oscillated based on at least the address information.

6. An optical recording medium according to claim 5, comprising a plurality of zones divided in such a way that the data can be * registered in the track at an essentially constant linear density, and the management information includes recommended information for a recording / reproduction operation each of at least one internal peripheral position and one external peripheral position.

7. An optical recording medium according to claim 5, wherein the tracks constitute an oscillation track 10 having an amplitude of about 10 nm to 15 nm, and a slope of tracks of 0.74 micrometer to 0.82 micrometer, and the Management information includes at least one value of the slope of the track and a value of 15 a central linear density.

8. An optical recording medium according to claim 5, wherein the track is an oscillation track having an amplitude amount of 10 nm to 15 nm and an inclination of 20 0.74 micrometer to 0.82 micrometer, and the information of Management includes information that allows the slope of the track and the central linear density to be identified.

9. In an optical recording medium where the track where the data is recorded is formed previously, 13 - and the track is oscillated with a signal obtained by frequency modulation of a carrier having a predetermined frequency in accordance with the address information, comprising: a link section formed between a data block serving as a unit of data record for the track and an adjacent data block, a data size of fM the link section being the same as the minimum data unit for constituting the data block.

10. A method for recording the data in an optical recording medium wherein a track where the data is recorded is formed previously and the track is oscillated with a signal obtained by frequency modulation of a carrier having a predetermined frequency in 15 response to the address information, which comprises the steps of forming a data block that serves as a data record unit for the track and a link section of the same size as a minimum data unit that 20 constitutes the data block; and recording the data in such a way that the section is interposed between the two adjacent blocks of the data blocks. 25