TWI244069B - Data recording method, recorder and data reproducing method and device - Google Patents

Abstract

The present invention is relative with a method for recording further data on a recording medium on which there are pre-recorded data obtained on modulating M-bit data to N-bit data, where M < N. The further recorded data are recorded by changing a certain bit or bits of the N-bit data, with the remaining portion of the bits of the N-bit data being fixed.

Description

1244069 玖 发明, description of the invention (the description of the invention should state: the technical field to which the invention belongs, the prior art, the content, the embodiments, and a brief description of the drawings) TECHNICAL FIELD The present invention relates to recording materials such as content data recorded in a recording medium A recording method and a recording device for performing recording such as identification, and a reproduction method and a recording device for performing reproduction on a recording medium on which identification data is recorded. The present invention is based on the patent application numbers of 200 1 -3 3 5406 and 200 patent applications dated October 31, 2001, and the patent application numbers of 0 0 1-3 4 5 3 30 Claiming priority, this application refers to these patent applications. 2. Description of the Related Art An optical disc (hereinafter referred to as a CD) used as a recording medium of music and other content data is reversed by [0] or [1] with 8 or 14 modulation (EFM modulation · Eight to Four Modulation) data. Non-return-to-zero inversion (NRZI;

Non Return to Zero Inverted). The following describes the Dove format of the CD. After the frame has a 24-bit synchronization signal, a 4-bit subcode is stored. Second, a symbol stores 14-bit recording data. The subcode is management data. Before modulation, a symbol is formed by 8 bits, and is stored in each frame. Each subcode of the subcode is divided into P ~ W. If the subcode p is used to display the start flag between the song and the subcode, subcode Q records the address information, etc., and the remaining r ~ w are used as user bits. , Such as for graphics. A 3-bit connection bit is inserted between each symbol. When the connection bit is combined with a symbol, it must not violate EFM's conversion rules, and choose to make the absolute value of the total digital value (DSV; Digital Sum Vale) smaller. 1244069 _ (2) I Description of the invention Continuation page CD and other optical discs, for the purpose of recording the content and other recording materials, etc., after the recording of the poor material ^ Sometimes it is necessary to add annotations to identify the poor material. When this identification data is recorded in the subcode, one symbol is completely changed. For example, when the identification data is recorded in the sub-code Q, both the sub-code P and the sub-codes R to W are changed. In this way, the recorded content data cannot be reproduced. The identification data added to the optical disc is irradiated with light beams on the ridges provided on the substrate constituting the optical disc, dissolving the reflective film of the reflected light beam, and avoiding the reflected light beam, and recording by virtual forming grooves. In addition, EFM modulation sets the minimum scan width (minimum inversion interval Tmin) to 2 and the maximum scan width (maximum inversion interval Tmax) to 10, and inserts [0 0 0], [ 1 0 0], [0 1 0], [0 0 1]. By changing the ridges in the second half of the modulation pattern to bits, when the identification data is recorded, when [000] is selected in the subsequent connection bits, after the identification data is recorded, the maximum scanning width (the maximum inversion interval Tmax) becomes 1 1 or more, thus violating the modulation rule. When recording the identification data added to the disc, the recording position of the identification data is determined by the data before and after the symbol of the recording data. The recording position is uncertain and may be a ridge or a groove. Since the groove is formed by a concave portion, the reflectance is small. Even if a light beam is irradiated in the area where the groove is formed to dissolve the reflective film, the recording / reproducing device cannot detect the recorded data. An optical disc used as a recording medium for content data such as music is 〇〇〇—ROM. The DVD — ROM defines a burst cutting area (BCA; Burst Cutting Area). In this area, identification data for identifying master data and other master data can be recorded as annotation information. Description of the Invention Continued 1244069 (3) B C A is provided in a different area from the area where the master data such as content data is recorded. The disc provided with B C A can be reproduced only by a dedicated recording / reproducing device or reproduction unit. Such identification information is recorded on each disc, and even to avoid deterioration of the production efficiency, a data that can be recorded within a specific time, such as about a few seconds, is still required. In addition, the recording speed of the recording device is accelerated, and the amount of identification data can be increased when the amount of data recorded per unit time is increased. Therefore, when providing a disc, it is sometimes necessary to set a recording capacity in a region such as a recordable tribute that is larger than the actual amount of recorded data. At this time, it is necessary to record the seniors who identify poor materials and so on. DISCLOSURE OF THE INVENTION The object of the present invention is to provide a recording method, recording device, and recording device that can be used as annotated data in a region where data has been recorded while maintaining interchangeability with an existing format. The data reproduction method and generating device further provide a recording medium on which the identification data is recorded. Another object of the present invention is to provide a recording method and recording device for data that can be recorded in a manner that does not violate the modulation rules of the master data recorded in the recording medium even after the identification data for the master data such as the identification content has been recorded. The method and device for reproducing data and data further mention a recording medium on which the poor material is recorded. Another object of the present invention is to provide a recording method, a recording method, and a data regeneration method and generating device that can easily expand the amount of data that can be added to the recording body, such as the identification of corrupted materials, and further provide a recording device. New materials and materials of the same material are recorded in the supplier's supply media. 1244069 (4) Description of the invention. The method of recording the data proposed to achieve the above-mentioned purpose is to record in advance a recording medium in which an M-bit lean material is modulated into an N (M <N) -bit lean material in order to make the N bit Some bits of the data change, and some other bits of the N-bit data are fixed to further record the data. At this time, the N-bit data includes the connection bits. In the recording medium used in the recording method of the present invention, N-bit data is recorded in advance as a concave-convex pattern including a ridge portion between a groove portion and a groove portion. When recording data, the ridge portion becomes a groove portion or the groove portion becomes a ridge portion. Method, selecting a connection bit located between the changed N-bit data of some bits and the N-bit data connected to the N-bit data. The recording device of the present invention includes: an optical head that scans a recording medium, and the recording medium is pre-recorded with data modulated from M bit data to N (M &lt; N) bit data as a ridge including groove portions and groove portions. The bump pattern of the control unit; the control unit controls whether to record the identification data based on the data read from the optical head; and the signal processing unit performs the signal processing for recording in the identification signal and supplies the output data to the optical head By using an optical head in the recording medium, the identification data is recorded in such a manner that certain bits of the N-bit data are changed, and the remaining bits of the N-bit data are fixed. The reproduction method of the recording medium of the present invention records data in which M bit data is modulated into N (M &lt; N) bit data in advance, so that certain bits of the N bit data are changed, and the N bit is changed. Some other bits of the data are fixed in a way that further records the data. The recording medium reads the data, extracts the rest of the N-bit data from the read data, and judges the rest of the extracted N-bit data. 1244069 (5) Description of the invention Whether the continuation part is a fixed value, and it is judged that the rest of the extracted N-bit data is a fixed value.

In the reproduction method of the other recording medium of the present invention, data in which M bit data is modulated into N (M &lt; N) bit data is recorded in advance so that some bits of the N bit data are changed to make the N bit Some other bits of the metadata are fixed in a way that further records the data. The recording medium reads the data, extracts the rest of the N-bit data from the read data, and determines whether the rest of the extracted N-bit data is a fixed value. When the remaining part of the extracted N-bit data is determined to be a fixed value, the recorded data is further reproduced. In the method for reproducing another recording medium of the present invention, information in which M bit data is modulated into N (M &lt; NR) bit data is recorded in advance so that some bits of the N bit data are changed to make the N bit The other bits of the meta data are fixed in a way that further records the data on the recording medium to read the data and detect whether certain bits of the read N bit data are specific values, and when some bits are not specific values, further Regenerate recorded data.

The reproduction device of the recording medium of the present invention is provided with an optical head, which is obtained by pre-recording data that modulates M bit data into N (M &lt; N) bit data so that some of the N bit data The bit is changed so that some other bits of the N-bit data are fixed in a way that further records the data to read the data from the recording medium; the demodulation section, which demodulates the data read by the optical head; and the control section , It extracts the rest of the N-bit data from the data read from the recording medium by the optical head, determines whether the rest of the extracted N-bit data is a fixed value, and determines the extracted N-bit data When the rest is a fixed value, further recorded data is supplied to the demodulation section. -11-1244069 | _ (6) I Description of the invention Continuation page The recording medium to which the present invention is applied is pre-recorded with data that modulates M bit data to N (M &lt; Ν) bit data so that the N bit data Some bits are changed, so that the remaining bits of the above N bit data are fixed to further record the tribute.

In the recording medium to which the present invention is applied, N bit data is recorded in advance, and as a concave-convex pattern including a ridge portion between a groove portion and a ridge portion, it is selected to be located in certain bits in such a manner that the ridge portion becomes a groove portion or the groove portion becomes a ridge portion. The connected bit between the changed N-bit data and the N-bit data that follows the N-bit data. The other objects of the present invention and the specific benefits obtained by the present invention will be further understood from the following description of the embodiments described with reference to the drawings. Brief Description of the Drawings Fig. 1 is an explanatory diagram of a signal format of an optical disc to which the present invention is applied. FIG. 2 is an explanatory diagram of a sub-coded frame format. FIG. 3 is a detailed explanatory diagram of a sub-coded frame format.

FIG. 4 is an explanatory diagram of a format of a subcode Q channel. FIG. 5 is an explanatory diagram of a manufacturing process of the optical disc. Fig. 6 is a block diagram showing a cutting device for manufacturing a reprint die. FIG. 7 is an explanatory diagram of an EFM conversion table. FIG. 8 is an explanatory diagram continuing the EMF conversion table shown in FIG. 6. FIG. 9A to FIG. 9D are explanatory diagrams of the subcodes of the recording identification data area. FIG. 10 is a block diagram illustrating a recording device for identification data. FIG. 11 is a flowchart illustrating an operation of recording identification data in a data recording device onto a disc. -12- 1244069 _ (7) I Description of Invention Continued Figure 12 is an explanatory diagram of a record example of identification data in which 0X4 7h is changed to 0X0 7h. Fig. 13 is a block diagram showing a data reproduction device for reproducing an optical disc to which the present invention is applied. Fig. 14 is a flowchart illustrating an error checking method. Fig. 15 is a flowchart illustrating a reproduction control method using a subcode of a Q channel

FIG. 16 is a flowchart illustrating a reproduction control method using subcodes of R to W channels. Fig. 17 is a flowchart illustrating another example of a reproduction control method using subcodes of the R to W channels. FIG. 18 is an explanatory diagram of the format of the sub-code Q channel recorded on the optical disc to which the present invention is applied. FIG. 19 is an explanatory diagram of index contents. FIG. 20 is a block diagram showing another example of a cutting device for manufacturing a reprint die.

FIG. 21 is a flowchart illustrating a subcode generation process. FIG. 22 is a block diagram showing another example of a recording device that does not recognize lean materials. Fig. 23 is a flowchart illustrating the operation of recording the identification data of the data recording device. Fig. 24 is an explanatory diagram of a recording example of identification data obtained by changing 0X47h to 0X07h. Figure 25 is a flowchart illustrating the procedure for adding identification data. Fig. 26 is a block diagram showing another example of a data reproduction apparatus for reproducing an optical disc to which the present invention is applied. -13- 1244069 说明 Description of the Invention Continued Figure 2 7 is a flowchart illustrating the reproduction operation of the data reproduction device. Fig. 28 is a block diagram showing another example of a cutting device for manufacturing a reprint die. FIG. 29 is a flowchart illustrating a selection procedure of the connected bits. FIG. 30 is a block diagram showing another example of a recording device for identification data. FIG. 31 is a flowchart illustrating an operation of recording identification data on a disc in a data recording device. Fig. 32 is an explanatory diagram of a recording example of identification data obtained by changing 〇 4 7 h to 〇 7 〇 7 h. Fig. 3 is a block diagram showing another example of a data reproducing apparatus for reproducing an optical disc to which the present invention is applied. Fig. 3 4-5 The flow of the regeneration control method using the sub-code of the Q channel Fig. 0

Figure 3 5 shows the manufacturing of a reprinted mold. Figure 36 is a block diagram of another example of the cutting device of the identification data in the EFM conversion table. The decimal method uses the 64th of 0X4 Oh for the selection of the connection bits of the time. Explanation of the diagram identification chart 0 3 7 uses the EF Μ conversion table 1 η, the decimal method of the 68th 0X44h for Description of the selection method of the connection bits in the data recording area

Figure 3 8 shows the recording area of the identification data converted by EFM. 0 I ^ Decimal method using the 71st 0X47h for the selection method of + + time connection bit Figure 3 9 shows the identification data Figure 4 It is a block diagram illustrating another example of the data recording device. The device records the identification data on the optical disc, 14-1244069 Invention Flowchart of the operation on the next page (9). Fig. 41 is an explanatory diagram of an example of a record in which 0X4 7h is changed to 0X0 7h. Fig. 42 is a block diagram showing another example of a data reproducing apparatus for reproducing an optical disc to which the present invention is applied. Figure 4 3 is a flowchart illustrating a reproduction control method using a subcode of the Q channel

Fig. 44 is a flowchart illustrating a reproduction control method using subcodes of R to W channels. Best Mode for Carrying Out the Invention Hereinafter, the first implementation of a data recording apparatus and method for recording data on the optical disc and a data reproduction apparatus and method for reproducing data recorded in the optical disc will be described with reference to the drawings. form.

The optical disc to which the present invention is applied is provided with a reading area for recording contents of table of content (TOC; Table of Contents) on the inner periphery side, a recording area for recording contents such as content data and the like on the outer periphery side, and a reading area on the outer periphery side Out area. The disc is recorded in the same recording format as CD, that is, the data of 8-14 modulation (EFM: Eight to Fourteen Modulation) is recorded in the recording format shown in FIG. That is, as shown in FIG. 1, each frame is processed in such a way that 32 symbols can be processed together, and a 24-bit synchronization signal (11T, 11ΊΓ ('stands for inversion) is provided at the front of the frame. 2T pattern or its opposite pattern), secondly, a sub-code of 1 symbol (14 bits) is provided, and secondly, data and parity including 32 symbols are provided, and the whole is composed of 588 channel bits. Insert any one of [00〇], [100], [010], [001] between each symbol -15-1244069 Description of the Invention Continued (10) 3 bits are used as binding bits.

In the sub-coding, one symbol composed of 8 bits is recorded in each frame. In addition to the address information and the like, the subcode also stores identification data for identifying each disc. The 8-bit data constituting the sub-code is divided into P, Q, R, S, T, U, V, and W channels. As shown in Fig. 2, the sub-coding consists of 98 frames, and the first block contains the synchronization signal SO, S1, which is used to identify the front of the block. A pattern not used in the EFM conversion table is used in the synchronization signals S0 and Si. That is, as shown in Fig. 3, the sub-coding is composed of 96 bytes in which 2-byte synchronization signals are removed, and one block is formed. The blocks of each channel of P to W of the subcode are composed of P1 to W1 to P96 to W96, that is, 96 bits (including 98 bits including the synchronization signal). If the P channel of the subcode is used as a start flag for displaying the music and the music, the Q channel records address information and identification data. In addition, R ~ W channels are used as user bits, and 6 channels are combined for graphics and error checking.

Hereinafter, the frame structure of the Q channel for recording identification data will be described with reference to FIG. 4. The frames of the Q channel are all 98 bits, and are sequentially provided from the beginning: SO, S1 forming a 2-bit synchronization signal; 4 bits CTL; 4-bit ADR for recording and reproduction mode of identification data; UDI index forming an index of 8-bit identification data; UDI payload forming a payload containing 56-bit identification data; forming 8-bit AFRAME of the address information; and a cyclic redundancy code (CRC; cyc 1 ic Redundancy Code) that forms a 16-bit error correction code. Now, from the lower 4 bits of the UDI index to 84 of the CRC The bits form a recording area. The 8-bit UDI index records the disc recordable identification time. -16-1244069 (η) Description of the invention Continuation page and recording completion time. The UDI payload records: the recording company ID of the recording company of the disc 1 sales company as the identification information of the disc 1, the record number used to identify the disc 1, the country number used to identify the production country of the disc 1, and the manufacturing factory of the disc 1 The manufacturer ID used, the manufacturing device ID used to identify the manufacturing device for manufacturing the optical disc 1, the serial number of the optical disc 1, and the modification detection code (MDC; Μ 〇dificati ο n D etecti ο η C ode) for detecting whether the data can be deleted. Waiting for detection

From the lower 4 bits of U DI i n d e x to C R C, before the disc identification data is recorded, if [1] is all recorded as the initial value. In this area, due to the thermal recording data on the reflective film at the recording position, grooves that do not reflect the concave portion of the light beam are virtually formed, thereby inverting to [0], and the identification data of the optical disc are recorded by the groove and ridge patterns formed virtually, The details are described later. The areas other than the recording area are the same as those of the ROM type disc, and specific data such as content data is recorded by grooves and ridge patterns in the recesses. In addition, the recording area should be at least the area of the payload and the error correction code. This frame can also be used as the area where all the records can be recorded, and all the initial values are recorded in advance [1]. The area where the identification data is recorded in the R ~ W channel forms a fixed value, and the same value is formed before and after the identification data is recorded. That is, the area where the identification data is recorded is used as a subcode to compare the data bits of the first 8-bit series before the identification data record with the demodulated 8-bit series of channel bits after the identification data record. The value of R ~ W channel after 3 bits is the same. This type of optical disc is basically a recording medium dedicated to reproduction, and recorded data such as content data is recorded by a groove pattern. The disc is marked with identification data for identifying each disc in the recording area of the specific subcode mentioned above as a note -17-1244069 Description of Invention Continued (12) Information.

The method for manufacturing the above-mentioned optical disc will be described below. When manufacturing the optical disc, as shown in FIG. 5, in the photoresist coating step 11, a photoresist is coated on the glass original disc, followed by the cutting step 12, the laser cutting is performed according to the groove pattern of the data to be recorded Make the original. Next, the laser-cut original disc with the groove pattern is developed and fixed in the developing and fixing step 13. Then, in the metal master disc manufacturing step 14, electroplating is performed on the surface to produce a master metal master disc. Next, in step 15 of making a reprint mold, a reprint mold is manufactured based on a metal master. In the substrate forming step 16, a reprint mold is set in a molding mold, and an optical disk substrate is made of a transparent resin such as polycarbonate and acrylic by an injection molding machine. The groove pattern formed on the original disc is transferred on the disc substrate produced in this step to be cut in step 12. Next, in step 17 of forming a reflective film, a reflective film is formed on the surface of the disc substrate on which the groove pattern is formed by sputtering or the like. The optical disc to which the present invention is applied uses the reflective film to fill identification data. In order to record identification data, the reflective film used for optical discs must be formed of materials that can record data. The reflective film has the same level of reflectance as the reflective film used for CDs and DVDs, or a reflectance that can be read by an optical head previously used, and is formed of a material whose reflectance is changed by thermal recording using a light beam . That is, the reflective film is formed of a metal film having a characteristic that the reflectance of the light beam used for reading by thermal recording is about 0.5% or more and 10% or less. Specifically, it is formed by mixing a small amount of an aluminum alloy with a miscellaneous content. In the protective film coating step 18, a UV curable resin is applied to the reflective film by spin coating, and ultraviolet rays are applied -18-1244069.

DESCRIPTION OF THE INVENTION Continued on the side of the sheet which is hardened to form a protective film, is exposed to light. membrane. The optical disc thus formed is subjected to recording and reproduction of data by a self-formed guarantee. Then, the following is described in "Identification by virtually forming grooves by dissolving the reflective film." In the cutting step 12, the laser cutting device 2 1 according to the concave-convex groove pattern of the data to be recorded is used to make the original disk cutting device 2 1 'The cutting device 2 1 As shown in Figure 6, if 1 is provided, α is prepared, and the sampling data to be recorded is through the input terminal

22a> and input + input A / D converter 22; the number ^ output from the converter ^, also wrong ° Wu ° Ding encoding processing error correction coding circuit 2 3; modulation coding output modulation circuit 24; A sub-code generator 25 that generates sub-codes; and a data generator 26 that adds the output of the self-withdrawing circuit 24 and the data from the sub-code generator 25 to generate recorded data. In addition, the cutting device 21 is provided with: laser sources 2 7 such as nitrogen field gas and gas recording lasers; using a light pen δ cycle system (EOM; Electorical Optical Modulator); Acoustic-Optical Modulator (Aom; Acoustic-Optical Modulator), etc., modulates laser light 2 8 according to the data of data generator 26; reflector 2 9 that reflects the modulated laser light; moving mirror 29 moving mechanism 30 of 29; the objective lens 3 1 that condenses the laser light and irradiates it on the glass original plate 35; the motor 3 2 that rotates the glass original plate 35; and sets the objective lens 3 1 on the objective lens 31 1 optical axis The objective lens driving mechanism 33, which is driven and displaced in the focusing direction, is shifted. The error correction coding circuit 2 3 uses the decimal of the interleaved reed-solomon code (CIRC) that interleaves the digital content of the analog, and is implemented in the sample group-19- (14)! 244〇69 Invented the continuation fT-y southbound scanning and 4 times reed Solomon code encoding, and the modulation circuit μ. Lightning effect q j t Road 2 4 If it is based on the decimal right or wrong of E F Μ. Correct the coding circuit 2 3 έ. THE χ,, ㉚ 贯 贯 调制 Modulation processing ’and output to the data generator 26. And t &amp;, σ 'modulation circuit 24 according to the EFM conversion table shown in Figs. 7 and 8, the minimum sweep f # ^, and (the minimum inversion interval T ni i η) is 2, so that the maximum scan The width (maximum anti-chain pq, interval Tmax) is 10, and an 8-bit series is converted into a 14-bit recording code series. #Subcode generator 25 generates subcodes such as address information according to the recorded data, and it is yj · j Π: /, EFM modulation, which converts 8-bit series data bits into 14-bit 疋 record code series. The subcode generator 25, which is a subcode 'area for recording identification data, generates specific data bits shown in the 8-bit queue in the EFM conversion table of FIG. 7 and FIG. 8 and converts them into 14 bits. Series of record codes. Specifically, the subcode generator 25, as the subcode of the area where the identification data is recorded, is demodulated after recording the identification data in the modulated 14-bit recording code series after demodulating the data from the 8-bit series. The second bit from the upper order of bits, that is, the Q channel of the subcode is converted from [1] to [0], and from the third bit of the upper order to the last bit, that is, R ~ W of the subcode The channels produce the same data bits. The data is in a 14-bit pattern after EF MM modulation, and the reflective film is dissolved by irradiating the beam on the ridges between the grooves. When a groove is virtually formed, the newly formed groove length is selected to satisfy the modulation rule of EF Μ modulation That is, the condition that the maximum inversion interval Tmax is 10 and the minimum inversion interval Tmin is 2 is satisfied. As shown in FIG. 9A, the sub-code generator 25 selects the 64th 0x4 0h [0 1 0 0 0 0 0 0] as the record identification data in the decimal format of the EF M conversion table. 1244069 Invention § 儿 明Continued (15)

The subcode of the region. Because 0 X 4 0 h becomes 0-bit [01001000100100] during EF M modulation, the beam is irradiated on the third ridge L of the pattern modulated by NRZI to dissolve the reflective film, and when a groove is virtually formed, it becomes 1 4 [01001000100000] of the bit, when demodulating, except for the Q channel of the upper second bit, it becomes 0X00h [00000000] of the 0th of the same pattern.

In addition, as shown in FIG. 9B, the subcode generator 25 selects the 65th of 0 X 4 1 h [0 1 0 0 0 0 0 1] as the area in which the identification data is recorded in the decimal of the EF M conversion table. Subcode. Because 0X41 h becomes 14-bit [10000100100100] during EFM modulation, the beam is dissolved on the second ridge L of the pattern modulated by NRZI to dissolve the reflective film. When a groove is virtually formed, it becomes 14-bit [10000100000000 ], When demodulating, except for the Q channel of the upper second bit, it becomes 0X01h [00000001] of the first one in the same pattern. Furthermore, as shown in FIG. 9C, the subcode generator 25 selects the 68th of 0X44h [0 1 000 1 00] as the subcode of the area in which the identification data is recorded, using the decimal of the EFM conversion table. 0X44h becomes 14 bits during EFM modulation

[01000100100100], the beam is dissolved on the second ridge L of the pattern modulated by NRZI to dissolve the reflective film, and when a groove is virtually formed, it becomes [01000100000000] of 14 bits. During demodulation, the upper second bit is divided. Outside the Q channel, it becomes the fourth 0X04h [00000100] of the same pattern. Further, as shown in FIG. 9D, the subcode generator 25 selects the 71st of 0X4 7h [0 1 000 1 1 1] as the subcode of the area in which the identification data is recorded in decimal of the EFM conversion table. It is [00100100100100] which becomes 14 bits during EF M modulation at 0 X 4 7 h. When the second ridge L of the pattern modulated by NRZI is irradiated with a light beam to dissolve the reflective film, when the groove is virtually formed, it becomes 1 4 Bit -21-1244069 Description of the Invention Continued page (16) [00100100000000], when demodulating, except for the q channel of the second bit of the upper order, it becomes the seventh 0X07h [00000111] of the same pattern.

The subcode is generated as a subcode of 2 5 as a region in which identification data must be recorded. By generating the subcode as described above, a specific ridge is inverted into a groove. It can be reversed to [0], and the identification data can be recorded, and the channels R ~ W can be formed to a fixed value before and after the identification data is recorded. Zone installation.

As shown in FIG. 6, the data generator 26 is input with E F M modulated recording material 'from the self-modulation circuit 24 and the sub-code is generated from the sub-code generator 25. The data generator 26 inserts 3-bit connection bits between 14-bit blocks of the recording code series. Specifically, the data generator 26 meets the maximum inversion interval Tmax = 10 and the minimum inversion interval Tmin = 2 of the conversion rule of EF M, and then from [0 0 0], [1 0 0], [0 1 0], [0 0 1], select the connection bits that make the absolute value of the digital total value (DSV; Digital Sum Vale) smaller, and have less low-frequency components, in the 14-bit block of the recording code series A 3-bit connection bit is inserted in between. The data generator 2 6 sets the recording code series to 17 bits, generates the data shown in Figure 1 above, and outputs the generated data to the optical modulator 28 ° Cutting device 2 with the above structure. When the data is input to the A / D converter 22, the A / D converter 22 converts the data from the analog signal into a digital signal and outputs it to the error correction coding circuit 2 3, which is implemented in the sample to combine interlaced The code of the reciprocating Solomon code is scanned and outputted to the modulation circuit 24. The modulation circuit 24 applies data to -22- (17) 1244069 Description of Invention Continued on EFM modulation. That is, the modulation circuit 24 converts the data to be recorded from 8-bit to 14-bit using an EFM conversion table according to the EFM conversion table 'shown in Figs. 7 and 8, and outputs it to the data generator 26. In addition, the subcode generator 25 generates 8-bit subcodes such as address information corresponding to the recorded data, converts it into 14-bit blocks, and outputs the data to the data generator 26. Data generator 2 6 has self-modulation channels 2 4 input data, and sub-code generator 2 5 inputs sub-codes and other materials' add this data and insert 3 between 4-bit blocks The connected bits of the bits generate recording data, modulate the recording data with is RZI, and rotate to the optical modulator 28. In addition, the laser source 2 7 emits laser light, and the laser light enters the light modulator 2 8. The modulation circuit 24 modulates the laser light according to the input from the data generator%. That is, when [i] is input from the data generator 26 to the 'modulation circuit 24, the laser light is modulated. The laser light modulated by the modulation circuit 24 enters the reflecting mirror 29. The mirror 29 is moved by the moving mechanism 30, so that the laser light can be scanned inside and outside the entire glass original disk 35. The laser light is condensed by the objective lens 3, and is irradiated onto the glass original disk 35 rotating at a constant linear velocity (CLV) by a spindle motor 32 of a rotation driving unit. At this time, the objective lens 31 is driven to be positioned in the optical axis direction of the laser light by the objective lens driving mechanism 33 to form focus control. Next, a data recording device that records identification data on the disc used in the identification data recording step 19 will be described with reference to FIG. This data recording device 4 is equipped with a spindle motor 4 1 for rotating the optical disc 丨 to which the present invention is applied; an optical pickup 42 for detecting a light beam emitted from the optical disc 1 and reflected back; an objective lens for performing the optical pickup 42 Focus servo control and tracking servo control, and advance -23-1244069, _ (18) I Description of the invention Continuation of the control section 4 3 of the rotation control of the spindle motor 4 1; detected by the optical pickup 4 2 RF amplifier 44 that generates RF signals by detecting output; sync signal detection section 4 5 that generates clocks by detecting sync signals from RF signals; sub-code extraction section 4 6 that extracts sub-codes from RF signals; EF-modulated 1 4 The bit code sub-code is demodulated into 8 bits, and a sub code demodulation unit 47 for generating sub codes of the P ~ W channel; and a detection unit 48 for detecting sub codes of the R ~ W channel. In addition, the data recording device 40 for recording the identification data of the disc 1 is provided with a switching unit 4 9 that switches the input of the identification data recorded in the disc 1; the modulation unit 50 that modulates the identification data A recording processing section 5 1 that performs recording processing when the material is recorded on the optical disc 1; and an output control section 52 that controls the output of the light beam emitted from the optical pickup 42. The spindle motor 41 is integrally mounted with a disc table on the spindle. The disc table is clamped by aligning the center hole of the disc 1 so that the rotation center of the disc 1 coincides with the rotation center of the mandrel. The spindle motor 41 rotates the optical disc 1 integrally with the optical disc table. The optical pickup 42 includes a semiconductor laser that is a light source that emits a light beam, an objective lens that focuses the light beam emitted from the semiconductor laser, and a photodetector that detects the light beam reflected by the reflection film of the optical disc 1. The light beam emitted from the semiconductor laser is condensed by the objective lens and irradiates the signal recording surface of the optical disc 1. The semiconductor laser here controls the laser output by the output control unit 52. According to the control of the output control unit 52, the semiconductor laser emits a light beam at a standard output when the data recorded in the optical disc 1 is reproduced. When recording the identification data, a thermal recording method can be used in which the reflective film is dissolved, which is higher than The light beam is emitted at a high output level during reproduction.

• 24- (19) 1244069 Description of the invention continued page The light beam reflected by the signal recording surface of disc 1 is converted into an electrical signal by a photodetector, which outputs the electrical signal to an RF amplifier. The objective lens is supported by an objective lens driving mechanism such as a two-axis actuator, and is driven and displaced in a focusing direction parallel to the optical axis of the objective lens and a tracking direction intersecting the optical axis of the objective lens. The RF amplifier 44 generates an RF signal, a focus error signal, and a tracking error signal based on the input of the photodetector constituting the optical pickup 42. The focus error signal is generated by the astigmatic aberration method and the like, and the tracking error signal is generated by the two-beam method and the push-pull method. The RF amplifier 44 outputs a focus error signal and a tracking error signal to the control unit 43. The sync signal detecting section 45 detects the frame sync shown in Fig. I from the RF signal, and detects the sync number when the subcode shown in Figs. 2 and 3 is decoded. The synchronization k-number detecting unit 45 generates a clock from the synchronization signal. The control unit 43 generates a focus servo signal and a tracking servo signal based on the focus error signal and vertical error input from the RF amplifier 44 and outputs the signals to the drive path of the objective lens driving mechanism of the optical pickup 42 . As a result, the objective lens held by the objective lens driving mechanism performs dynamic changes in the focus direction parallel to the optical axis of the objective lens and the tracking direction orthogonal to the optical axis of the objective lens based on the focus servo signal and the tracking servo signal. Bit. In addition, the clock generated from the synchronization signal of the control unit 43 generates a rotary servo signal in synchronization with the frequency and phase of the reference clock of the crystal oscillator. Based on this, the spindle motor 41 rotates the disc i by CLV. The sub-code extraction unit 46 extracts the 14-bit sub-code set after the same signal is extracted from the data rotated by the RF amplifier 44 and outputs it to the sub-code demodulation and conversion 44. Water-repellent step unit 1244069 | _ (20) I Description of the invention continued on page 4 7. The subcode demodulation section 47 converts 14-bit data into 8-bit data in accordance with the EFM conversion table. The subcode demodulation section 47 constitutes 1 block with 98 frames, and generates subcodes of P, Q, R, S, T, U, V, and W channels. That is, the subcode demodulation section 47 generates P1 to W1 to P96 to W96, that is, generates a 96-bit subcode.

The detecting section 48 detects the pattern of the recording identification data, and detects the subcode R to W channels. That is, the detection section 48 detects whether the ADR of the Q channel is a mode for recording identification data. The detecting section 48 detects whether the R to W channels of the subcode are fixed values stored in the memory. That is, when the detecting unit 48 detects whether the R ~ W channel is [000000] in FIG. 9A or not, in FIG. 9B, whether the R ~ W channel is [000001]

In FIG. 9C, whether the R ~ W channel is [000100], and in FIG. 9D, whether the R ~ W channel is [0 0 0 m]. When the data of the R ~ W channel input from the sub-code demodulation unit 47 is a fixed value, the detection unit 48 activates the switching unit 49 and inputs the identification data from the input terminal 53 to the modulation unit 50. The detection unit 48, when the data of the R ~ W channel input from the subcode demodulation unit 4 7 is not a fixed value, indicates that it is not the recording area of the identification data, and the identification data cannot be recorded in the optical disc 1. Therefore, the switching unit 4 9 is closed . The modulation section 50 modulates the identification data input from the input terminal 53 with a specific modulation method, and outputs it to the recording processing section 51. The recording processing unit 51 performs necessary recording processing for recording on the optical disc 1, and outputs data for performing the recording processing to the optical pickup 42. Next, the recording operation of the identification data of the data recording device 40 configured as described above will be described with reference to FIG. First, when the user presses the recording button for identifying data, the data recording device 40 drives the spindle motor 41 and rotates the optical disc 1 mounted on the optical disc table constituting the optical disc mounting portion at a constant linear speed. And light -26-1244069 Description of the invention continued (21) The pickup 4 2 irradiates the light beam on the optical disc 1. At this time, the output control section 52 controls the semiconductor laser of the optical pickup so as to output the light beam with a standard output. On the other hand, the optical pickup 42 starts reading data in a state where the control unit 43 controls the focus and tracking servo.

In step S1, the data recording device 40 records the identification data in a specific area, and causes the optical pickup 42 to jump over the recording area of the identification data. In step S2, the data recording device 40 uses a subcode extraction unit 46 to extract a subcode near the recording area of the identification data, and demodulates it with a subcode demodulation unit 47. The detection unit 48 extracts the R to W channels of the subcode and checks the data. In step S3, the detection section 48 determines whether the subcodes of the R to W channels read from the optical disc 1 are a specific fixed value. When the data recording device 40 reads the subcodes of the R ~ W channels read from the optical disc 1 and the fixed values stored in the memory, etc., it proceeds to step S4, and if not, it proceeds to step S6. For this reason, the identification data in the disc 1 has not been recorded in the frame of the Q channel of the subcode shown in FIG. 4, so it is impossible to specify the area where the identification data is recorded. If the combination of 0X47h and 0X07h shown in FIG. 9D is used, the data recording device 40 determines whether the subcode of the R ~ W channel is [000111]. If it is [000111], it proceeds to step S4. If it is not [0 0 0 1 1 1], the process proceeds to step S6. In addition, the data recording device 40 may detect whether the ADR of the Q channel refers to the mode of recording the identification data before the step S3 by the detecting section 48, and if it is detectable, go to step S3. In step S4, when the subcode of the R ~ W channel read from the optical disc 1 is consistent with the fixed value stored in the memory or the like, it is determined whether the area of the currently entered optical disc 1 is the area where the identification data is recorded. Then, the switching unit -27-1244069 is started. (22) 49 ° In step S5, the data recording device 40 starts a recording operation for identifying data. That is, the identification data (UID) is input from the input terminal 53, and is input to the modulation unit 50 through the switching unit 49. After specific modulation processing, the recording processing is performed by the recording processing unit 51 and input to the optical pickup. 4 2 within. At this time, in order to thermally record the identification data by dissolving the reflective film, the output control unit 52 switches the semiconductor laser wheel from the standard level to the high level. The data recording device 40 records data into the recording area of the subcode of the Q channel shown in FIG. 4, that is, the recording data is in the 84 bits of the CRC from the lower 4 bits of the UDI index. Specifically, the data recording device 40 records the recordable time and recording completion time in the lower 4 bits of the UDI index, followed by the identification data in the 56-bit UDI payload, and the second is the 8-bit AFRAME The address information such as the frame number is recorded, followed by the 16-bit cRC error correction code. Hereinafter, a method of recording such data will be described with reference to FIG. 12. The example shown in this figure is obtained by changing 0X47h in Fig. 9 (D) to 0X07h. Before the identification data is recorded, the pattern A before the identification data is recorded, as shown in (A) of FIG. 12, after the 24-bit frame synchronization signal is inserted, the connection bit of [0000] is inserted, and then [00 1 00 1 00 1 00 1 00] (〇X47h), followed by the connection bit of [100]. The optical disc 1 is provided with a ridge L1 of 11T after a groove P1 of a length of 11T, followed by a groove P2 of 7T, a ridge L2 of 3T, a ridge L3 of 3T, a ridge L3 of 3T, and a groove 3P of 3T. 4. Then, the data recording device 4 〇 irradiates a high-output light beam 'dissolving the reflective film for thermal recording' at the position of the ridge L3 by irradiating the groove P 3 to the groove P 4 at the position of the ridge L3-28-1244069-(23) A groove connected to the groove P 3 and the groove P 4 is formed, and a recorded pattern A shown in (B) in FIG. 12 is formed. That is, a pattern of [00100100000000] (0X07h) is recorded in the subcode area of the pattern A after recording. Therefore, in the optical disc 1, the 11T ridge L11 is set after the 11T ditch P11, the 7T ridge P12 is set, the 3T ridge L12 is set, and the 9T ridge P13 is set. In the following description, when the pattern of the frame synchronization signal is opposite to the above example, as shown in (C) of FIG. 12, the pattern B 'before the identification data is recorded is inserted with the connection bit of [001] after the 24-bit frame synchronization signal. , Secondly record the subcode of [00100100100100] (0X47h), and then record the connection bit of [100]. The optical disc 1 is provided with a ridge L21 of 11T after a ridge L21 of a length of 11T, followed by a ridge L22 of 4T, a ridge 22 of 3T, a ridge L23 of 3T, a ridge 23 of 3T, and a ridge of 3T L24, followed by 3T trench P24. Then, the data recording device 40 irradiates a high-output light beam from the grooves P23 to P24, dissolves the reflective film for thermal recording, and virtually forms a groove connected to the groove P23 and the groove P24 at the position of the ridge L24, thereby forming the groove in FIG. 12 (D) Recorded pattern B as shown. That is, a pattern of [0011000000000000] (0X07h) is recorded in the sub-code area of the pattern B after recording. Therefore, in the 'disc 1', the 11T ditch P31 is set after the 11T ridge L31, the 4T ridge L32 'is set, the 3T ditch P32' is set, the 3T ridge L33 is not set, and the 9T ditch P33 is set. In this way, the data recording device 40 forms a pattern including grooves and ridges corresponding to the identification data by turning on and off of the high-output light beam, and records the identification data in the subcode of the Q channel. In step s 3 of FIG. 11 above, the detection unit 48 judges that 1244069 read from the optical disc 1 | _ (24) I Description of the invention When the subcodes of the R ~ W channels on the following page are not consistent with the specific fixed value, in step S In step 6, it is judged that the area of the currently entered disc 1 is not the area where the identification data is recorded, and the switching section 49 is closed without inputting the identification data, and the search is continued to return to step S2. With the above method, the subcode of the R ~ W channel is designated as the recording area of the identification data, and the identification data can be recorded in the designated area.

Next, a data reproduction device 60 for reproducing the optical disc 1 recorded with the identification data by the above data recording device 40 will be described with reference to Figs. The data reproduction device 60 includes a spindle motor 6 1 that rotates the optical disc 1 on which identification data is recorded: an optical pickup 6 2 that detects a light beam emitted from the optical disc 1 and reflected back; an objective lens that performs the optical pickup 6 2 When the focus servo control and the tracking servo control are performed, and the control unit 6 3 performs the rotation control of the spindle motor 61; the RF amplifier 64 that generates RF signals and the like from the output of the optical pickup 62; The synchronization signal detection section 6 5 of the pulse; the demodulation section 66 for demodulating the EFM-modulated recording data such as content data; and the error correction processing section 67 for performing error correction processing on the demodulated data. The data reproduction device 60 includes: a subcode extraction unit 68 that extracts subcodes from the RF signal; demodulates the 14-bit subcode that has undergone EF M modulation into 8 bits, and generates a subcode of the subcode of the P ~ W channel A demodulation section 69; a detection section 70 that detects the subcodes of the R to W channels; a switching section 71 that switches the output of the identification data recorded on the optical disc 1; and a demodulation section 72 that demodulates the identification data. The spindle motor 61 is integrally mounted on the spindle with a disc table. The disc table is clamped by aligning the center hole of the disc 1 so that the rotation center of the disc 1 coincides with the rotation center of the mandrel. Spindle motor 61 1 integrated with the disc table -30-1244069 Description of the invention continued

(25) Rotating Disc Optical Pickup Laser Emitting Reflective Film Back Light Beam by. Here comes the beam. Photodetector RF amplifier driving mechanism Amplifies the signal to the objective lens RF, resulting in a focus error. With the three beam wheels out, the focus signal will be synchronized and the signal will be focused. Synchronization control unit traces error signals and other signals on the input line. Let J be 62 to include: a semiconductor laser that emits a light beam; an objective lens that focuses the light beam from the semiconductor; and a photodetector that detects the light beam returned by the optical disc 1. When the objective lens emitted from the semiconductor laser is condensed and irradiated on the signal recording surface of the optical disc 1 to reproduce the data, the semiconductor laser is emitted at a standard output. After being converted into an electrical signal, the photodetector outputs the electrical signal to 64. In addition, the objective lens is supported by an objective lens such as a two-axis actuator, and is driven and displaced in a focusing direction parallel to the optical axis of the objective lens and a tracking direction orthogonal to the optical axis. The RF signal, the focus error signal, and the tracking error signal are generated based on the output of the photodetector constituting the optical pickup 62. For example, the signal is generated by the astigmatic aberration method and the like, and the tracking error signal method and the push-pull method are generated. The RF amplifier 64 is a demodulation section 66 that decodes the data of the Rf signal through EFM modulation, and outputs the error signal and the tracking error signal to the servo control section 63. The signal detection section 65 detects the frame synchronization signal shown in FIG. 1 from the RF signal. The pan-test detects the synchronization signal when the subcodes shown in FIG. 2 and FIG. 3 are decoded. 63 According to the focus error signal and tracking number input from the RF amplifier 64, a focus temple service signal and a tracking service signal are generated, and the driving electric ratio of the objective lens driving mechanism output to the optical pickup 62 is maintained at The objective lens driving mechanism of the objective lens is based on poly-31-1244069

Description of the Invention Continued The focus servo signal and the tracking servo signal are driven and displaced in a focusing direction parallel to the optical axis of the objective lens and a tracking direction orthogonal to the optical axis of the objective lens. The clock generated by the self-synchronization signal of the servo control section 63 is synchronized with the frequency and phase of the reference clock of the crystal oscillator to generate a rotation servo signal. Based on this, the spindle motor 61 rotates the optical disc 1 by CLV.

The demodulation section 6'6 demodulates recorded data such as content data in accordance with the decimal of the EFM. Specifically, the demodulation section 66 converts a 14-bit recording code series into an 8-bit data bit according to the EFM conversion tables shown in FIG. 7 and FIG. 8. The error correction processing section 67 demodulates the demodulated recording data based on decimal such as CIRC, and outputs the demodulated data to the output terminal 73. If the recorded data is audio data, the audio data output from output terminal 73 is converted from digital signals to analog signals by a D / A converter and output from audio converters such as headphones and headphones.

The subcode extraction section 68 extracts a 14-bit subcode set after the frame synchronization signal is extracted from the data input from the RF amplifier 64, and outputs it to the subcode demodulation section 69. The subcode demodulation section 69 converts 14-bit data into 8-bit data according to the EFM conversion table. The subcode demodulation unit 69 constitutes one block with 98 frames, and generates subcodes of P, Q, R, S, T, U, V, and W channels. That is, the subcode demodulation section 69 generates P1 to W1 to P96 to W96, that is, generates a 96-bit subcode. The detection section 70 detects the pattern of the recording identification data, and detects the subcode R to W channels. That is, the detection section 70 detects whether the ADR of the Q channel is a mode for recording identification data. The detecting section 70 detects whether the R to W channels of the subcode are fixed values stored in the memory. That is, when the detecting unit 70 detects whether the R ~ W channel is [000000] in FIG. 9A, and whether the R ~ W channel is [000001] -32-1244069 _ (27) in FIG. 9B Description Continued

In Fig. 9C, whether the R ~ W channel is [000100], or in Fig. 9D, whether the R ~ W channel is [0 0 0 m]. The detection unit 70 activates the switching unit 71 when the data of the R ~ W channel input from the subcode demodulation unit 69 is a fixed value, and outputs the identification data input from the subcode extraction unit 68 to the demodulation. Department 7 2. When the data of the R ~ W channel input from the subcode demodulation unit 69 is not a fixed value, the detection unit 70 indicates that it is not a recording area of the identification data, so that the identification data input from the subcode extraction unit 6 8 cannot be input to The mode of the demodulation section 72 turns off the switching section 71.

The identification data demodulation section 7 2 inputs the sub-code having the Q channel from the sub-code demodulation section 69 through the switching section 71. The identification data demodulation section 72 refers to the recording completion time of the UDI index shown in FIG. 4 to demodulate the identification data recorded in the UDI payload, and outputs the error correction processing to the output terminal 74 using CRC.

Next, the data reading operation of the data reproduction device 60 will be described. When the user presses the reproduction button, the data reproduction device 60 drives the spindle motor 61 and rotates the optical disc 1 mounted on the optical disc table constituting the optical disc mounting portion at a constant linear speed. And the optical pickup 62 irradiates the light beam on the optical disc 1. At this time, the semiconductor laser emits a light beam with a standard output. The optical pickup 62 starts reading data in a state in which the servo control unit 63 is controlled to focus and track. The use of the subcodes of the R to W channels of the optical disc 1 for error checking will be described below with reference to FIG. In step S 11, the data reproduction device 60 enters the recording area of the identification data. When the identification data is in the reproduction mode, the sub code is extracted by the sub code extraction unit 6 8 and the sub code demodulation unit 6 9 demodulation. In step S 1 2, the detection unit 70 extracts the R to W channels of the sub-codes of each frame and checks the data. Continuing, the detection section 70 judges the R ~ W channel read from the disc 1 • 33-1244069 _ (28) Description of the invention continued page

Whether the subcode is a specific fixed value. For example, when a combination of 0X47h and 0X0 7h shown in FIG. 9D is used, the detection section 70 determines whether the subcode of the R ~ W channel is [000 1 1 1]. When the data reproduction device 60 determines that the detection section 70 is a fixed value, that is, the subcode of the R ~ W channel is [000111], it proceeds to step S13, and determines that the non-fixed value, that is, the subcode of the R ~ W channel is not [0 0 0 1 1 1], the process proceeds to step S 1 4.

When the data reproduction device 60 determines that the subcodes of the R to W channels are fixed values, the data reproduction device 60 determines that there is no error in step S13. When the data reproduction device 60 determines that the subcodes of the R to W channels do not agree with the fixed values, the data reproduction device 60 determines in step S14 that there is an error. If the identification data demodulation section 72 performs a C RC check of the Q channel and detects an error, the bit of the Q channel of the frame detected by the detection section 70 can be inverted, and the CRC check can be performed again to correct the error.

With the above method, using the subcodes of the R ~ W channels which become fixed values, by judging whether the fixed values stored in the memory of the data reproduction device 60 and the subcodes of the R ~ W channels read from the optical disc 1 are If they match, an error check can be performed. This data reproduction device 60 can also control the reproduction of data as follows. As shown in FIG. 15, in step S 21, the data reproduction device 60 enters the recording area of the identification data, extracts the sub code by the sub code extraction unit 68, and demodulates the sub code by the sub code demodulation unit 6 9. In step S22, the detection section 70 reads the Q channel of the subcode and judges at least whether the recordable areas shown in FIG. 4 above are all [1]. This is because the disc 1 on which identification data has not been recorded does not dissolve the reflective film and virtually form a groove due to the recording of identification data, so at least the recordable area of the Q channel becomes -34-1244069 _ (29) I Invention Description Continued [ 1〕. Of course, when the frames of the Q channel are all recordable areas, it is only necessary to determine whether the subcodes of the Q channel are all [1]. When the recordable areas of the Q channel are all [1] in the data reproduction device 60, the process proceeds to step S 2 3, and if not, the process proceeds to step S 24.

When the recordable areas of the data reproduction device 60 are all [1] in the Q channel, in step S 2 3, the switching section 7 1 is closed, reading of identification data is prohibited, and reproduction of content data recorded on the optical disc 1 is prohibited. . Because the recordable area of the Q channel is [1], the disc 1 is a disc that has not yet recorded identification data, and it is declared as an unhealthy bee before the identification data is recorded. When the recordable areas of the Q channel are not all [1] in the data reproduction device 60, in step S2, when the detection section 70 detects the ADR of the Q channel as the recording area of the identification data, a reading of the identification data is formed. Regeneration mode. Next, in step S25, the data reproduction device 60 reads the identification data and demodulates it, and secondly, if the reproduction processing of the content data recorded in the optical disc 1 is allowed.

With the above method, by judging whether the recordable areas of the Q channel are all [1], it is possible to restrict the reproduction of discs declared as incorrect before recording the identification data. In addition, the use of this method can restrict the reproduction of incorrect discs produced by peeling off the protective film and reflective film of the optical disc 1, and transferring the embossed groove pattern of the optical disc substrate. Since the identification data is recorded by dissolving the reflective film to form a groove, it is not a concave-convex pattern, so it is not transferred to the stamp. This data reproduction device 60 can also control the reproduction of data as follows. As shown in FIG. 16, in step S 31, the data reproduction device 60 detects by the detection section 70 -35- 1244069 _ (30) I Description of the invention continued page

When A D R of the Q channel is a recording area for identifying the material, a reproduction mode for reading and identifying the material is formed. In step S32, the data reproduction device 60 uses the detection section 70 to extract the R ~ W channels of the subcodes, and determines whether the subcodes of the R ~ W channels read from the optical disc 1 have a specific fixed value. For example, when a combination of 0X4 7h and 0 X 0 7 h shown in FIG. 9D is used, the detection unit 70 determines whether the subcode of the R to W channel is [000 1 1 1]. When the data reproduction device 60 determines that the detection section 70 is a fixed value, that is, the subcode of the R ~ W channel is [000111], it proceeds to step S33, and judges a non-fixed value, that is, the subcode of the R ~ W channel is not [0 0 0 1 1 1], the process proceeds to step S 3 4.

When the data reproduction device 60 determines that the sub code of the R ~ W channel is a fixed value, in step S33, if the currently installed optical disc 1 is a correct disc, the switching unit 71 is activated to read the identification data. Subcode demodulation unit 6 9 When the subcode of the Q channel is input via the switching unit 7 1, the identification data demodulation unit 7 2 refers to the recording completion time recorded in the UDI index shown in FIG. 4 and records it in the UDI payload. The identification data is demodulated, and then the CRC is used for error correction processing and output to the output terminal 74. The data reproduction device 60 starts the reproduction processing of the content data recorded on the optical disc 1. When the data reproduction device 60 determines that the subcodes of the R ~ W channels are not consistent with the fixed value, in step S34, if the currently installed disc 1 is not the correct disc or a disc of a different type, the switching section 7 1 is turned off. It is forbidden to read the identification data, such as the subsequent processing such as the reproduction processing of the content data recorded on the optical disc 1. With this method, reproduction of discs declared as incorrect and discs of different kinds can be restricted. This data reproduction device 60 can also control the reproduction of data as follows. Figure -36- 1244069 _ (31) I Description of Invention Continued

As shown in FIG. 17, in step S 41, the data reproduction device 60 specifies the area where the identification data is recorded, so that the optical pickup 62 jumps over the recording area near the identification data. In step S42, the data reproduction device 60 uses the subcode extraction unit 68 to extract the subcode near the recording area of the identification data, and demodulates it with the subcode demodulation unit 69. The detecting section 70 extracts the R to W channels of the subcode and checks the data. In step S43, the detection unit 70 determines whether the subcodes of the R ~ W channels read from the optical disc 1 are a specific fixed value. The data reproduction device 60 proceeds to step S44 when the subcodes of the R ~ W channels read from the optical disc 1 are consistent with the fixed value stored in the memory or the like, and proceeds to step S46 if they are not consistent. For example, when the combination of 0X4 7h and 0X0 7h shown in FIG. 9D is used, the detection unit 70 determines whether the subcode of the R ~ W channel is [000111], and if it is [000111], it proceeds to step S 4 4 instead of [0 0 0 1 1 1], the process proceeds to step S 4 6.

In step S44, the sub-code of the R ~ W channel read from the optical disc 1 is inconsistent with the fixed value stored in the memory, etc., so that the area of the currently entered optical disc 1 is determined as the area where the identification data is recorded. Therefore, the switching section 71 is activated to read the identification data. When the subcode of the Q channel is input from the subcode demodulation unit 69 through the switching unit 71, the identification data demodulation unit 72 refers to the recording completion time and the like recorded in U DI inde X shown in FIG. 4 described above, and records the The identification information in the UDI payload is demodulated, and then the CRC is used for error correction processing and output to the output terminal 74. The data reproduction device 60 starts reproduction processing of the content data recorded on the optical disc 1, for example. In step S43, when the detection section 70 determines that the subcodes of the R ~ W channels read from the optical disc 1 do not agree with a specific fixed value, in step S46, it is determined that the area of the currently entered optical disc 1 is not recorded with identification data. Area, and close the switching section 7 1 by inputting identification data without the -37- 1244069 _ (32) Invention Description Continuation Page Method, continue searching, and return to step S 4 2. With the above method, the subcode of the R ~ W channel is designated as the recording area of the identification data, and the identification data recorded in the designated area can be read.

As detailed above, in the recording area of the identification data using the optical disc 1 of the present invention, except for the Q channel, the subcodes of the R to W channels form the same fixed value before and after the identification data is recorded, so by using the fixed Value, when the identification data is recorded and the identification data is reproduced, the recording area of the identification data can be specified. The data reproduction device 60 detects whether the subcodes of the R ~ W channels read from the optical disc 1 are different from the fixed value, and thus can detect whether an error has occurred. The identification data is not recorded by grooves and ridges including a concave-convex pattern, and the reflection film is not dissolved and the light beam is reflected. Therefore, the identification data is not transferred on the incorrect disc manufactured by using the embossed groove pattern of the disc substrate by peeling off the protective film and reflective film of the disc 1 and transferring the groove pattern of the disc substrate, thereby restricting the production of novices This kind of disc reproduction.

Next, a second embodiment of an optical disc to which the present invention is applied, a data recording apparatus and method for recording data on the optical disc, and a data reproduction apparatus and method for reproducing data recorded in the optical disc will be described with reference to the drawings. The optical disc used here is also provided with a reading area such as table of content (TOC) data on the inner periphery side, and a data record on the outer periphery side of the recorded data such as content content data. The area has a read-out area on the outer peripheral side. The data is recorded in the same recording format as CD, that is, 8 to 14 modulation (EFM: Eight to Fourteen Modulation) is recorded in the recording format shown in FIG. -38- 1244069 Description of Invention Continued (33)

Referring to FIG. 18, the detailed structure of the frame of the Q channel recorded with the identification data used in the optical disc used here will be described. The frame of the Q channel is all 98 bits, and it has from the beginning: a 2-bit synchronization signal. S 0, S 1; 4-bit CTL; 4-bit ADR used to identify the recording and reproduction mode of identification data; U DI inde X forming an index of 8-bit identification data; formation of 56 bits UDI payload for identification data; AFRAME for 8-bit address information; and Cyclic Redundancy Code (CRC) for 16-bit error correction code 〇8-bit UDI index It consists of 8 bits from a0 to a7. As shown in FIG. 19, the two bits of a 〇 ′ a 1 are allocated to specify where the area for recording and identifying the poor material is located. Specifically, [0 0] indicates that the recordable area of the identification data is in the optical disc system. One place, [01] means one place in the communication session (Session), and [10] means one place in the course. In addition [1 1] is maintained.

a2 and a3 are assigned to specify the frame. Specifically, [00] indicates the first frame, that is, the header, [0 1] indicates the subsequent frame, and [1 0] and [11] are maintained. The 4 bits of a4 to a7 record the tributary material (sector) showing the identification data of 0 to 15 recorded. The sectors identified here are identified as 100 sectors (100 frames of subcode: 64 bits) to 160 sectors (160 frames of subcode: 1 2) 4 bits), the identification information is recorded in units of 100 sectors (100 frames). For example, when a 2 and a 3 are [0 0], a 4 to a 7, that is, the total number of frames (sectors) are recorded in the header. When entering the front, you can specify the size of the recordable area of the identification data. &amp; 2 '3 &gt; When 3 is [〇1]', several t's are recorded in '~ 2 · 7', and the positions of the towels can be specified. With this, when the data length of the identification data does not reach the total number of frames (sectors), frames other than the area where the identification data are recorded can be designated as -39-1244069 (34) Description of the Invention Continuation page Unrecorded area. 5 6-digit u DI pay 1 〇ad records: the recording company ID of the recording company of the disc sales company as the identification information of the disc, the record number for identifying the disc, the country number for identifying the country of manufacture of the disc, and identification Manufacturer ID for optical disc manufacturing plant, Manufacturing device ID for disc manufacturing device, Disc serial number, Modification detection code (MDC; Μ 〇 dificati ο n D etecti ο n C 〇) de), and other detection codes, and password keys for master data such as Uchiya data. In addition, identification data is recorded in a way that does not cross several roads. This is because the P channel between the channels is [1] and it is paused during playback (blank time), but at this time when the identification data is recorded, the 'P channel may become [0]. The recording speed of identification data is 75 sub-code frames / 1 second, and the recording time of each disc is about 5 seconds. When the recording time is longer than that, it takes too much time to record the identification data, which leads to deterioration of the manufacturing efficiency of the optical disc. Therefore, when the recording speed is faster than that, the recording amount of the identification data can be increased. From the lower 4 bits of the UDI index to the CRC, before the disc identification data is recorded, if [1] is all recorded, [1] is used as the initial value. In this area, due to the thermal recording data on the reflective film at the recording position, a groove that does not reflect the light beam or a concave portion with a small amount of reflection is virtually formed, thereby being inverted to [0], and the optical disc is recorded by the groove and ridge pattern formed virtually The identification information is detailed below. Areas other than the recordable area are the same as ROM-type discs, and specific data such as content data is recorded by groove and land patterns. In addition, it can be recorded that the domain is at least the UDI index, UDI payroll, and CRC areas with different values for each disc. Therefore, this frame can also be used as an area where all the data can be recorded. -40-1244069 (35) Continued description of the invention The pre-recording method uses all initial values as ridges [1]. The area where the identification data is recorded in the R ~ W channel forms a fixed value, and the same value is formed before and after the identification data is recorded. That is, the area where the identification data is recorded is used as a subcode to compare the data bits of the first 8-bit series before the identification data record with the demodulated 8-bit series of channel bits after the identification data record. The value of R ~ W channel after 3 bits is the same.

This type of optical disc is basically a recording medium dedicated to reproduction, and recorded data such as content data is recorded by a groove pattern. The disc is filled with identification data for identifying each disc in the above-mentioned specific recordable subcode area, as a poor signal. The optical disc is also manufactured through the steps shown in FIG. 5 described above. The cutting device 1 2 1 used in the cutting step of the original disk according to the concave-convex groove pattern of the data that must be recorded in the optical disc is the same as the basic structure of the cutting device 2 1 shown in FIG. 6, as shown in FIG. As shown at 0, it has a discrimination section 34 which discriminates the recordable area of the identification data.

In the description of the cutting device 1 2 1 used here, the same parts as those in the device shown in FIG. 6 are denoted by the same symbols, and detailed descriptions thereof are omitted. The sub-code generator 25 of the cutting device 1 2 1 shown in FIG. 20 generates a sub-code including address information of the corresponding data in an area where the main data such as content data is recorded, and the 8-bits thereof are modulated by EFM. The data bits of the series are converted into a 14-bit record code series. The subcode generator 25 generates the data bits of the 8-bit series in the specific EFM conversion table shown in FIG. 8 and FIG. 9 as a subcode of a region for recording identification data, and converts it into a 14-bit record Yard series. Specifically, the sub -41-1244069

Description of the invention

The code generator 25 is the second bit from the upper level of the 8-bit series of data bits when demodulating #recording identification data in the 14-bit modulated code series after modulation. The Q channel of the code is reversed from [1] to [0] 'and the same data bit is generated from the third bit to the last bit of the upper order, that is, to the r ~ W channel of the subcode, as the record identification data area Zima. In the 14-bit pattern after EF MM demodulation, when a groove is virtually formed by irradiating a beam on the ridge between the grooves and dissolving the reflective film, the newly formed groove length is selected to satisfy the modulation rule of EFM modulation. That is, the condition that the maximum inversion interval Tmax is 10 and the minimum inversion interval Tmin is 2 is satisfied. At this time, the 'subcode generator 25' also selects the 64th 0X40h [0 1 000000] of the EFM conversion table decimal as the subcode of the record identification area, as shown in the aforementioned FIG. 9A. In addition, as shown in FIG. 9B, the subcode generator 25 selects the 65th of 0X4 lh [0 1 00000 1] as the subcode of the area in which the identification data is recorded, using the decimal of the EFM conversion table. Furthermore, as shown in FIG. 9C, the subcode generator 25 selects the 68th OX44h [0 1 000 1 00] as the subcode of the area in which the identification data is recorded using the EFM conversion table &lt; decimal. Furthermore, as shown in FIG. 9D, the subcode generator 25 selects the 71st XX47h [0 1 000 1 1 1] as the sub code of the area where the fiber-level material is recorded by using EFM conversion # and clothes decimal.孑 The ima generator 25 generates the subcode as above to be used as the subcode of the plaque that must be recorded for the two figures of zibei. 'Reverse a specific ridge into a groove. Therefore, it is necessary to record 8-bit data of the Q channel.' Reverse [1] to [〇] ', then "Yuan Series Records-42-1244069 _ (37) I Invention Description Continuation page identification data, and channel R ~ W as a fixed value before and after the identification data is recorded, The area where the identification data is recorded or recorded can be detected and recorded by a recording and / or reproduction device. The cutting code generator 2 of the cutting device 1 2 1 shown in FIG. 20 is connected to the recordable area of the specified identification data. Discrimination unit 34. Discrimination unit 34 judges whether the subcode generator 25 generates subcodes recorded in the area of the master data such as the recorded content data, or whether the subcode generator 25 generates the subcodes recorded in the record identification. Subcodes in the recordable area of the data. When the discriminating section 34 records the main data such as content data, the subcode generator 25 generates subcodes containing address information of the corresponding data, etc., and modifies them by EFM modulation. 8-bit series data bits are converted into 14-bit record codes The sub-code generator 25 is controlled in a row manner. When the discriminating section 34 records the recordable area of the identification data, the sub-code generator 25 generates the specific figures 8 and 9 shown in the foregoing FIGS. 9A to 9D. The 8-bit series of data bits in the EFM conversion table shown is converted into a 14-bit record code series to control the subcode generator 2 5. As shown in FIG. 20, the data generator 2 6 The self-modulation circuit 2 4 inputs the EFM-modulated recording data, and the sub-code generator 25 inputs the sub-code. The data generator 26 inserts a 3-bit connection between the 14-bit blocks of the recording code series. Specifically, the data generator 26 satisfies the maximum inversion interval T ma X = 1 0 and the minimum inversion interval T mi η = 2 of the conversion rules of the EFM, and from [0 0 0], [1 0 0 〕, [0 1 0], [0 0 1] select the connection bits that make the absolute value of digital total value (DSV; Digital Sum Vale) smaller and have less low-frequency components. A 3-bit connection bit is inserted between the bit blocks. The data generator 26 makes the record code series 17 bits, and generates 1244069.

DESCRIPTION OF THE INVENTION Continued The data shown in FIG. The tributary generator 26 outputs the generated data to the motion of the cutting device 1 2 1

Referring to FIG. 21, the structure shown in FIG. 2 will be described.

When the sampled data to be recorded is input to the a / d converter 22 through the input terminal 22a, the 'A / D converter 22 converts the data from the analog signal to a digital signal' and outputs it to the error correction coding circuit 23, and the error correction coding circuit ^ The cross-interlaced scanning and 4 times reed Solomon code coding are combined in the sample, and output to the modulation circuit 24. In step 8101, the modulation circuit 24 performs the modulation processing based on the decimal of the EFM for the coded output from the error correction coding circuit 23, and outputs it to the data generator 26. The subcode generator 25 generates a subcode containing address information and the like of the corresponding data in the area where the main data such as content data is recorded, and converts its 8-bit series of data bits into 14-bit by EFM modulation. Record code series. The sub-code generator 25 generates specific data bits of the § bit series in the EF M conversion table shown in FIG. 8 and FIG. 9 and converts them into a 14-bit recording code series, which is used as a region for recording identification data. Subcode. In step S 102, the judging unit 34 judges whether it is an area where identification data is recorded. Specifically, the discriminating section 34 judges at least the areas where the values of the UDI index, UDI payload, and CRC are different for each disc shown in FIG. 4 as the recordable areas of the identification data. Of course, it is also possible to judge the subcodes of all Q channels in the area where the identification data is recorded as the recordable area of the identification data. When it is the area where the identification data is recorded, it proceeds to step S 103, which is not the area where the identification data is recorded, that is, -44-1244069 _ (39) When the continuation page area of the invention description, Go to step S 1 0 4.

When it is the area for recording identification data, in step S 103, the sub-code generator 25 self-modulates the 14-bit recording code series after recording the identification data and decodes it, starting from the 8-bit series. The upper bit of the data bit, that is, the Q channel of the subcode is reversed from [1] to [0], and from the third bit of the upper order to the last bit, that is, R ~ W The channel generates the same data bits. For example, the data bits such as 0X40h, 0X41h, 0X44h, and 0X47h shown in FIG. 9A to FIG. The subcode generator 25 converts the subcode into a 14-bit record code series according to the EFM conversion tables shown in Figs. 8 and 9 described above. When it is an area for recording main data such as content data, in step S 104, the sub code generator 25 generates a sub code including address information and the like of the corresponding data, and according to EF M shown in FIGS. The conversion table converts it into a 14-bit record code series.

The data generator 26 inputs data from the modulation circuit 24, and the subcode generator 25 inputs data such as subcodes, adds the data, and inserts at least 14-bit blocks without violating EF Μ The 3 bits of the conversion rule are converted to generate recording data, and the recording data is modulated by NRZI and output to the optical modulator 28. In addition, the laser source 27 emits laser light, and the laser light enters the light modulator 2 8. The light modulator 24 modulates the laser light according to the input from the data generator 26. That is, the optical modulator 24 modulates the laser light when [1] is input from the data generator 26. The laser light modulated by the light modulator 26 is incident on the mirror 29. The mirror 2 9 is moved by the moving mechanism 30, and can not be inside or outside the entire glass original plate 35. -45-1244069 Audio explanation continued

The spindle motor 32 of the rotary driving section is irradiated on the glass original disk 35 which rotates at a constant linear velocity (C L V; At this time, the objective lens 31 is driven by the objective lens driving mechanism 33 to change its position in the optical axis direction of the laser light to form focus control. The original disc 35 is exposed as above, and the disc with the original pattern 35 of the original disc transferred to the recordable area of the recording identification data is displayed on the 14th digit of 0X40h, 0X41h, 0X44h, and 0X47h in FIGS. 9A to 9D by recording. The unit's record code 糸 歹 ll 'records data at least in the areas where the UDI index, UDI payload, and CRC shown in FIG. 18 are all [1]. Next, a data recording device that records identification data on a disc used in the identification data recording step will be described with reference to Figs. This data recording device 1 40 is similar to the data recording device 4 0 shown in FIG. 10 described above, and includes: a spindle motor 4 1 that rotates the optical disc 1 〇1 of the present invention; and detects and reflects a light beam emitted from the optical disc 1 〇1 The optical pickup 42 of the returning light beam; the control unit 4 3 that performs the focus servo control and tracking servo control of the optical pickup 42 on the objective lens, and performs the rotation control of the spindle motor 4 1; the optical pickup 42 2 Outputs an RF amplifier 44 that generates an RF signal, etc .; detects a synchronization signal from an RF signal to generate a clock; a synchronization signal detection unit 4 5; extracts a subcode from the RF signal; a subcode extraction unit 46; The code is demodulated into 8 bits, and a subcode demodulation section 47 for generating subcodes of the p ~ w channels; and a detection section 48 for detecting subcodes of the R ~ w channels. The recording system for the identification data of the recording disc 1 〇 丨 of the data recording device 1 40 shown in FIG. 22 includes: the identification data modulation section for modulation identification data 1 4 9 -46- (41) 1244069 Description of the invention continued page

Sub-code modulation section 15 for 3-code sub-codes; switching section 151 for switching records recorded in the input of light sources; 胄 recording processing section 152 for recording processing when identifying data within U; and control 7 and access to disc 1 〇1 The output control unit 153 of the output of the emitted light beam. The picker 42 and the two motors 41 are integrally mounted on the spindle with an optical disc table. The "disc" is centered by the center hole of the optical disc 1 to promote the rotation of the optical disc 101, and the center of rotation is consistent with the center of rotation. The optical disc 101 is rotated by the axis of the axis. ·· The laser beam that is emitted is 綮 # β 豆 田 射, the light inspection of the light beam reflected from the semiconductor mountain &lt; Λ He 卞 with the reflection film of the first pair ^, detection is disc 1 0 The light beam of 1 is focused by the objective lens, and the two old ones are emitted from the semiconductor laser emitting surface. Here, the semiconductor laser system * is emitted on the signal recording wheel of the optical disc 1 0. The semiconductor laser is based on the wheel: two by The output control section 153 controls the reproduction date of the laser data recorded on the optical disc 101: the control of the production section 153 is used to record the identification data in a soluble form: 'emits the light beam at the standard output, and records the higher output than the reproduction. Level emission: In the method of thermal recording of the beam, the signal recording surface of the disc 101 is broken, and the beam is replaced with an electrical signal. The photodetector turns the returned beam through the photodetector to 44. In addition, The lens is caused by two axes: electrical two signals are output to R The F amplifier is supported by the optical axis of the objective lens, which is flat and the direction of the focus direction orthogonal to the optical axis of the objective lens drive mechanism and the direction of the focus and the letter of the objective lens. u generates RF signals, output signals and tracking error signals. For example, -47. 1244069 _ (42) I Description of the invention Continuation page Focus error signals are generated and tracked by the astigmatic astigmatism method. The error signal is generated by a three-beam method, a push-pull method, etc. The RF amplifier 44 outputs a focus error signal and a tracking error signal to the control section 43.

The synchronization signal detecting section 45 detects the frame synchronization signal shown in Fig. 1 from the RF signal, and detects the synchronization signal when the subcodes shown in Figs. 2 and 3 are decoded. The synchronization signal detecting section 45 generates a clock from the synchronization signal.

The control section 43 generates a focus servo signal and a tracking servo signal based on the focus error signal and the tracking error signal input from the RF amplifier 44, and outputs these signals to the drive circuit of the objective lens driving mechanism of the optical pickup 42. Thus, the objective lens held in the objective lens driving mechanism is driven in a focusing direction parallel to the optical axis of the objective lens and a tracking direction orthogonal to the optical axis of the objective lens according to the focusing servo signal and the tracking servo signal. Variable Bit. The clock generated by the control unit 4 3 from the synchronization signal generates a rotation servo signal in synchronization with the frequency and phase of the reference clock of the crystal oscillator. Based on this, the spindle motor 41 rotates the disc 1 with C LV 1 0 1 .

The subcode extraction section 46 extracts a 14-bit subcode set after the frame synchronization signal is extracted from the data input from the RF amplifier 44, and outputs it to the subcode demodulation section 47. The subcode demodulation section 47 converts 14-bit data into 8-bit data in accordance with the EFM conversion table. The subcode demodulation section 47 constitutes 1 block with 98 frames, and generates subcodes of P, Q, R, S, T, U, V, and W channels. That is, the sub-code demodulation section 47 generates P 1 to W 1 to P 9 6 to W 9 6, that is, it generates sub-codes of 96 bits. The detection unit 48 detects the weights of records to identify lean materials. That is, the 'detection section 48' detects whether the ADR of the Q channel is a mode for recording identification data. In addition, the detection section 48 can also detect whether the subcode of the R ~ W channel is a fixed value, -48-1244069 Invention Description Continued

yiv. 弋 eu ifJR ό3Κ. Π '\ Since Λ!'-Τ tr!! σσ &gt; 5.χ, ^ Π ″ ΗτΓ ^ W Λ-7 ^ hV ^ r, 3T? λ? 1! 3 7F— * H, J recording mode; it can also be specified whether the recording position is a ridge or a combination of these. Identification of the poor material modulation section 1 4 9 Modulates the identification input from the input terminal 1 5 4 with a specific modulation method The data is output to the sub-code modulation unit 150. At this time, the data input to the input terminal 154, as shown in Figure 19, is recorded in UDI in addition to the identification data recorded in UDI pay 1 〇ad. inde X of a 0 ~ a 7

material. The subcode modulation unit 150 performs demodulation processing for converting the 8-bit data bit series into a 14-bit channel bit series for the subcode of the frame irradiating the beam by recording the identification data. That is, as shown in the aforementioned FIG. 9A to FIG. 9D, the sub-code modulation unit 1 50 performs, for example, the frame on which the identification data is recorded. 〇7h processing, and according to the EFM conversion table shown in Figure 8 and Figure 9 to convert 8-bit data bits into a 14-bit record code series.

The switching section 1 5 1 switches the input of the identification data recorded in the optical disc 1 01. The switching unit 151 is activated according to the control of the detection unit 48, and is activated when the detection unit 48 detects the mode of recording the identification material, and is closed when it is not detected. That is, the 'switching unit 1 5 1 outputs the identification data to the record processing unit 5 2 only when the identification data is recorded. The recording processing unit 15 2 performs necessary recording processing for recording on the optical disc 101, and outputs the data for recording processing to the optical pickup 42. Next, the recording operation for identifying the tributary material by the data recording device 140 configured as described above will be described with reference to FIG. First, when the user presses the record button for identifying the tribute, the data recording device 1 4 0 drives the spindle motor 4 1 and uses a certain line -49- 1244069 _ (44) I _ Instructions

The optical disc 1 is mounted on the optical disc table constituting the optical disc mounting section at a speed of rotation. And the optical pickup 42 irradiates the light beam on the optical disc 1 0 1. At this time, the output control unit 153 controls the semiconductor laser of the optical pickup 42 in such a manner that a standard output emits a light beam. On the other hand, the optical pickup 42 starts reading data in a state where the control unit 43 controls the focus and tracking servo.

In step S 1 11, the data recording device 1 4 0 records the identification data in a recordable area, and makes the optical pickup 4 2 execute the TO C of the sub code demodulated by the sub code demodulation section 47. The track jump is near the recordable area of the identification data. The data recording device 1 40 extracts the subcodes near the recordable area of the identification data by the subcode extraction unit 46 and outputs the 8-bit data to the detection unit 4 after demodulation by the subcode demodulation unit 47. 8. In step S 1 12, the detection section 48 uses the identification data in the ADR of the subcode of the Q channel to determine whether it is a recordable area of the identification data. When it is determined that the identification data is recorded, the switching unit 15 is activated, and the process proceeds to step S 1 1 3. When it is judged that it is not the area where the identification data is recorded, the switching section 1 5 1 is turned off, and the process proceeds to step S 1 1 4. In addition, the detection 4 8 can also specify the area where the identification data is recorded by detecting whether the subcode of the R ~ W channel is a fixed value, and the device is set to the recording mode of the identification data, and whether the recording position is a ridge To specify, or a combination of these. In the case where the identification data is recorded, in step S 11 3, when the identification data is input through the input terminal 15 4, the identification data modulation unit 1 4 9 modulates the identification data in a specific manner. The subcode modulation unit 150 performs modulation processing for converting an 8-bit data bit series into a 14-bit channel bit series by comparing the subcode of the frame of the beam with the identification data record. The sub-code modulation unit 150 passes through -50-1244069 Description of the Invention Continued (45) The conversion unit 1 51 inputs the modulation processing identification data into the recording processing unit 15 2. The recording processing unit 1 5 2 outputs the inputted identification data to the optical pickup 4 2. At this time, the output control unit 153 switches the output of the semiconductor laser from the standard level to the high level in order to obtain the thermally recorded identification data by dissolving the reflective film. The data recording device 140 records data in the subcode recording area of the Q channel shown in FIG. 18 by the virtual formation of grooves on the ridge, that is, within 84 bits from UDIindex to CRC. Specifically, the data recording device 140 records data of a0 ~ a7 in U DI inde X, followed by identification data in 56-bit UDI pay load, and secondly records frame number in 8-bit AFRΑΜΕ. Equal address information, followed by a 16-bit CRC error correction code. When it is not the mode for recording the identification data, the detection section 48 closes the switching section 151 in step S 1 1 4 to prohibit the recording of the identification data. Hereinafter, a method of recording such materials will be described with reference to FIG. 24. In addition, the example shown in this figure is obtained by changing 0X47h shown in FIG. 9D to 0X07h. Before the identification data record, the pattern A before the identification data record is shown in (A) of FIG. 24, and the connection bit of [〇0 〇] is inserted after the frame synchronization signal of 24 bits, followed by the record [00100100100100] (〇X47h) sub-code, followed by the connection bit of [100]. The optical disc 10 is provided with a ridge L1 of 11T after a groove P1 of a length of 11T, followed by a groove P2 of 7T, a ridge L2 of 3T, a groove P3 of 3T, a ridge 13 of π, and a ridge of 3T. The groove P4 is followed by a ridge L4 with a connection bit of 3T or more and 11T or less. The data recording device 1 40 performs thermal recording by dissolving the reflective film by irradiating a high-output beam 'from the groove P 3 to the groove P 4, and a groove connecting the groove P 3 and the groove P 4 is virtually formed at the position of the ridge L 3, and The pattern A after the recorded invention description page 1244069 (46) shown in (B) in FIG. 14 is formed. In addition, the light beam may be partially irradiated on the ridge LJ. Therefore, the pattern of [oolooioooooooo] (0X07h) is recorded in the sub-code area of the pattern a after recording. That is, the 'disc in the disc' is set after the length of 11T / 丨 1 ridge L11, followed by a 7T groove p12, followed by a 3T ridge L12, followed by a 9T groove P13, and then a connected bit 3T Above, ridge L13 below 11T. That is, the ridge L4 (L13) makes the length of the groove 13 less than 1 1 τ so that the distance from the first half of the channel bits of the subsequent block does not exceed 1 1T to avoid violating the conversion rules of EFM. In the following description, when the pattern of the frame synchronization signal is opposite to the above example, as shown in (C) in FIG. 24, the pattern B before the identification data is recorded is inserted into the [0 0 1] after the 24-bit frame synchronization signal. The connection bit 'records the subcode of [00100100100100] (〇X47h), and the connection bit of [100] is recorded next. The optical disc 101 is provided with a 11T ridge P21 after a 11T ridge L21, followed by a 4T ridge L22, a 3T ridge P22, a 3T ridge L23, a 3T ridge P23, and a 3T ridge L24. Secondly, a ditch P24 of 3T is set, and a ridge L25 of 3T or more and 11T or less are connected. The data recording device 1 40 is formed by irradiating a high-output light beam from the groove P 2 3 to the groove P 2 4 and dissolving the reflective film for thermal recording. A groove connecting the groove P23 and the groove P24 is virtually formed at the position of the ridge L24. The recorded pattern B shown by (D) in FIG. 24. In addition, the light beam may be partially irradiated on the spine B3. Therefore, a pattern of [00110, 100, 000, 000, 000] (0x0 7 h) is recorded in the subcode area of the pattern B after recording. That is, in the optical disc, a groove 11 of 11T is set after the ridge L31 of length "τ", a ridge 4 of 4 D is set next, and a 3T 1244069 is set next. (47) A ridge of P 31 is set, followed by 3 The ridge L33 'is followed by a groove of 9T, and the ridge of 33T or more is connected by P33. That is, L2 5 (L3 4) makes the length of the trench 33 less than 11T, so that the distance between the first half of the channel bits of the subsequent block and the first half is not more than 1 to avoid violation of the EFM conversion rule. In this way, the data recording device 140 forms a pattern including grooves and ridges corresponding to the identification data by turning on and off the high-output light beam, and records the identification data in the subcode of the Q channel. The data recording device 140 configured as described above can also add identification data by referring to a0 ~ 旳 of the UDI index of the optical disc 1101 on which the identification data is recorded. This will be described with reference to Figs. In step S 1 21, the data recording device 140 is caused to skip over the recordable area of the identification data and enter the area where the identification data is recorded. The data recording device 140 extracts the subcode of the recordable area of the identification data by the subcode extraction unit 46, and outputs the 8-bit data to the detection unit 48 after demodulation by the subcode demodulation unit 47. In step S22, the detection unit 48 detects the UDI 1 n d e X shown in FIG. 18 and FIG. 19. The detection unit 48 determines in step S 1 2 3 whether or not refilling of identification data and the like is possible. If the data length of the identification data does not reach the total number recorded in the header ° 10 frames (sectors), the frame other than the area where the identification data is recorded is designated as the unrecorded area. In step s 丨 2 3, when the detecting section 48 determines that there is an unrecorded area, the process proceeds to step S 1 24, and when there is no unrecorded area, the process proceeds to step S 1 2 5. When there is an unrecorded area, in step S 1 2 4, the detection unit 48 activates the switching unit 1 ′ so that the identification data can be filled. Self input terminal 1 5 4 Input identification -53-1244069 _ (48) IInvention description Continued

When differentiating data, the identification data modulation unit 149 modulates identification data in a specific way. The subcode modulation unit 150 performs modulation processing for converting the 8-bit data bit series into a 14-bit channel bit series for the subcode of the frame irradiating the beam by recording the identification data. The sub-code modulation section 1 50 is input to the recording processing section 15 2 via the switching section 1 51, and the recording processing section 15 2 is output to the optical pickup 42. At this time, the output control unit 153 switches the output of the semiconductor laser from a standard level to a high level in order to find out the thermal recording identification data by dissolving the reflective film. The data recording device 140 adds identification data in the subcode recording area of the Q channel shown in FIG. 18 by forming a groove virtually on the ridge. When there is no unrecorded area, in step S 1 2 5, the detection unit 48 closes the switching unit 15 1 and prohibits the addition of the identification data.

Next, a data reproduction device 160 for reproducing data from the optical disc 1101 in which the identification data is recorded by the data recording device 140 described above will be described with reference to Figs. The data recording device 160 includes: a spindle motor 16 1 that rotates the optical disc 1 0 1 on which identification data is recorded; an optical pickup 1 6 2 that detects a light beam emitted from the optical disc 1 0 and reflected back; Control unit 163 for focusing servo control and tracking servo control of the object lens of the pickup 1 6 2 and performing rotation servo control of the spindle motor 1 6 1; RF amplifier 1 that generates RF signals and the like from the output of the optical pickup 162 64; Synchronous signal detection section 1650 which generates a clock by detecting a synchronization signal from an RF signal; Demodulation section 1 6 for demodulating content data such as EFM-modulated recording data; and Errors on the demodulated data Correction processing error correction processing section 1 6 7. The data reproduction device 160 includes: a subcode extraction unit 168 that extracts a subcode from the RF signal; and demodulates the 14-bit subcode of the E F M modulation into 8 bits to generate -54-1244069.

Sub-code demodulation section 169 for subcodes of channel p ~ W on the next page; detection section 170 for detecting children of channel R ~ W, and 、; switch the taxi of identification data recorded on disc 1 〇1 And a demodulation section 7 2 for demodulating the identification data. The spindle motor 1 6 1 is integrally mounted on the spindle. By aligning the center hole of the disc 101 with the disc table, it is clamped in a centering state in which the rotation center of the disc 10 is aligned with the rotation center of the cart. The spindle motor 16 is rotated integrally with the disc table 101. 1. The optical pickup 1 62 includes: a semiconductor laser of a light source that emits a light beam; an objective lens for condensing the light beam emitted from the semiconductor laser; and detection of light of the light beam reflected by the reflective film of the optical disc 1 〇1 Detector, etc. The light beam emitted from the semiconductor laser is condensed by the objective lens, and is irradiated on the pseudo-number recording surface of the optical disc 10. When a semiconductor laser is used to reproduce data, it emits light at a standard output. The light beam reflected by the signal recording surface of the optical disc 101 is converted into an electric signal by the photodetector, and the photodetector outputs the electric signal to the RF amplifier 164. The objective lens is supported by an objective lens driving mechanism such as a two-axis actuator, and is driven and displaced in a focusing direction parallel to the optical axis of the objective lens and a tracking direction orthogonal to the optical axis of the objective lens. The RF amplifier 164 generates an RF signal, a focus error signal, and a tracking error signal based on the rotation signal from the photodetector constituting the optical pickup 162. For example, the focus error signal is generated by the astigmatic aberration method and the like, and the tracking error signal is generated by the two-beam method and the push-pull method. The RF amplifier i 6 4 outputs the RF signal to the demodulation unit 166 for solving the modulated EFM data, and outputs the water focus error signal and the tracking error signal to the control unit 63. Sync signal detection unit 1 6 5 detects the frame sync signal shown in Figure J from the RF signal -55-1244069

DESCRIPTION OF THE INVENTION The page number is continued and a synchronization signal is detected when the subcodes shown in Figs. 2 and 3 are decoded. The synchronization signal detecting section 1 65 generates a clock from the synchronization signal. The control section 163 generates a focus servo signal and a tracking servo signal based on the focus error signal and the tracking error signal 'input from the RF amplifier 164, and outputs these signals to the drive circuit of the objective lens driving mechanism of the optical pickup 162. Thus, the objective lens held in the objective lens driving mechanism is driven in a focusing direction parallel to the optical axis of the objective lens and a tracking direction orthogonal to the optical axis of the objective lens according to the focusing servo signal and the tracking servo signal. Variable Bit. The clock generated from the synchronization signal of the control unit 163 generates a rotation servo signal in synchronization with the frequency and phase of the reference clock of the crystal oscillator. Based on this, the spindle motor 161 rotates the disc using CLV 丨 0}. The demodulation section 166 demodulates recorded data such as content data in accordance with the decimal of the EFM. Specifically, the demodulation unit 166 converts a 14-bit recording code series into an 8-bit data bit according to the efm conversion tables shown in FIG. 8 and FIG. 9 described above. The error correction processing section 167 demodulates the demodulated recording data based on the decimal such as CIRC, and outputs it to the output terminal 73. If the recording data is audio data, the audio data output from the output terminal 173 is converted from digital signals to analog signals by a D / A converter, and then pulled. Eight, headphones, headphones and other outputs. The T-code extraction section 168 extracts the 4-bit sub-code set after synchronizing the signal input from the RF amplifier 164, and turns it out to the sub-code demodulation section 169. The sub-code demodulation unit 169 converts "bit data = 8-bit data according to the EFM conversion table. The sub-code demodulation unit 169 takes 9 8 frames, and then generates 1 block, and generates?" (^, Ruler, 8, Ding'11, from the sub-steps of the trade channel &lt; &quot; code. That is, -56-1244069 _ (51) I Description of the invention Continued page subcode demodulation section 169 generates P1 ~ W1 to P96 ~ W96, that is, a 96-bit subcode is generated.

The detection section 170 detects a mode for reproducing the identification data. That is, the detection unit 170 detects whether the ADR of the Q channel is a mode for reproducing identification data. In addition, the detection unit 170 can also designate the area where the identification data is recorded by detecting whether the subcode of the R ~ W channel is a fixed value, and set the device to the recording mode of the identification data. It is specified for the ridge, and it can also be specified in a combination of these. When the detection unit 170 is in the regeneration identification data mode, the switching unit 17 is activated to output the identification data input from the subcode extraction unit 168 to the demodulation unit 172. When the detection section 170 is not in the regeneration identification data mode, it indicates that it is not a recordable area of the identification data, and the identification data input from the subcode extraction section 1 6 8 is not input to the demodulation section 1 72 to close the switching section. 171 °

The identification data demodulation section 172 inputs the subcode with the Q channel from the subcode demodulation section 169 through the switching section 171. The identification data demodulation unit 17 2 refers to a0 ~ a7 recorded in the UDI index shown in FIG. 18, demodulates the identification data recorded in the UDI payload, and uses CRC to perform error correction processing and outputs to the output terminal. 174. Next, the data reading operation of the data reproduction device 160 described above will be described with reference to FIG. When the user presses the reproduction button, the data reproduction device 160 drives the spindle motor 16 and rotates the optical disc 101 mounted on the optical disc table constituting the optical disc mounting portion at a constant linear speed. And the optical pickup 162 irradiates the light beam on the optical disc 1 01. At this time, the semiconductor laser emits a light beam with a standard output. The optical pickup 1 6 2 is controlled by the servo control unit 1 6 3 into the state of focus and tracking control. -57- 1244069 Description of the Invention Continued (52) Start reading data.

In step S 1 31, the data reproduction device 160 is configured to record the identification data in a recordable area, and to make the optical pickup according to the TOC of the sub code demodulated by the sub code demodulation unit 16 9 1 4 2 Skip over the recordable area near the identification data. The data reproduction device 16 extracts the subcode of the recordable area of the identification data by the subcode extraction unit 16 and outputs the 8-bit data to the detection unit after demodulation by the subcode demodulation unit 16.9. 1 7 0. In step S 1 32, the detection unit 170 uses the identification data in the ADR of the subcode of the Q channel to determine whether or not the area is irradiated with the identification data recorded. When it is determined that the identification data is recorded, the switching unit 17 is activated, and the process proceeds to step S 1 3 3. When it is judged that it is not the area where the identification data is recorded, the switching section 1 71 is turned off, and the process proceeds to step S 1 3 4. In addition, the detection unit 1 70 can also designate the area where the identification data is recorded by detecting whether the subcodes of the R to W channels are fixed values, and set the device to the reproduction mode of the identification data.

In step S 1 3, the data reproduction device 160 refers to a0 to a7 of the UDI index shown in FIG. 18 and FIG. 19, calculates the total number of frames, and determines the length of the area where the identification data is recorded. The data reproduction device 16 outputs the identification data to the identification data demodulation section 172 via the switching section 171 from the subcode demodulation section 169. The identification data demodulation section 172 demodulates the identification data, performs error correction processing, and outputs it to the output terminal 174. Then, if the reproduction of the identification data is used as a condition, after demodulating the content data recorded on the optical disc 1 by the demodulation unit 16 6, the error correction decoding process is performed by the error correction processing unit 16 7 and outputted automatically. Terminal 1 7 3 output. When the content data is audio data, etc., the D / A converter is used to convert the digital signal into an analog signal, and then pull it. Eighth, headphones, earphones -58- 1244069 Description of the Invention Continued (53) Audio converter output. In step S 1 34, the detection unit 170 of the data reproduction device 160 closes the switching unit 17 1 and prohibits the reproduction of the identification data. In addition, the detection unit 170 may take this state as an error state and display an error message on a monitor or the like.

As detailed above, the optical disc 101 of the present invention is used to record Inde X (U DI inde X) as a cable bow in the area where the identification data is recorded. Here, the length of the identification data is recorded, which can be easily identified. Expanded data capacity. That is, even when the recording speed increases and the recording amount per unit time increases, the capacity can be easily expanded by changing its index. When the data length of the identification data does not reach the total number of frames (sectors) recorded in the header, frames other than the area where the identification data is recorded can be designated as the unrecorded area, and more information such as identification data can be added. Next, a third embodiment of a disc to which the present invention is applied, a data recording apparatus and method for recording data on the disc, and a data reproduction apparatus and method for reproducing data recorded in the disc will be described with reference to the drawings.

The optical disc used here is also provided with a reading area such as table of contents (TOC; Table of Contents) data on the inner periphery side, and data records such as recorded content data on the outer periphery side. The readout area on the outer peripheral side is recorded in the same recording format as CD, that is, the data of 8-14 modulation (EFM: Eight to Fourteen Modulation) is recorded in the recording format shown in FIG. 1 described above. The optical disc used here is also manufactured through the steps shown in FIG. 5 described above. The original disc for manufacturing the optical disc is manufactured using a cutting device 2 2 1 having a structure shown in Fig. 28. This cutting device 2 2 1 is the same as the cutting shown in Fig. 6 above -59- 1244069 (54) Description of the Invention Continued The basic structure of the device 2 1 is the same as that of the device shown in FIG. The cutting device 2 2 1 further includes a connection bit control unit 2 3 4 in the device shown in FIG. 6. The cutting device 22 1 shown in FIG. 8 is provided with a laser source 27 such as an argon laser, a helium-cadmium laser, and the like; and a photoelectric modulator using the Pockels effect (EOM; Elect; ) And the use of an acoustic acoustic-optical modulator (AOM; Acoustic-Optical Modulator), etc., based on the data of the lean generator 2 6 to modulate the laser light modulator 2 8; reflecting the modulated laser light reflector 2 9 ; Moving mechanism 30 for moving the mirror 29; the objective lens 3 丨 for radiating the laser light on the glass master 35; the motor 32 for rotating the glass master 35; and the objective lens 3 丨 for the objective The lens 3 drives an objective lens driving mechanism W in the focusing direction of the optical axis direction. If the error correction coding circuit 23 uses the digital content of the analog to interleave the interlaced scanning reed, Solomon J, Ping Shima (C r 〇 s s Interleave

Reed-s〇l0mn Code; CIRC), which is applied to the combination of interlaced scanning and reed solo bow and quasi-gate code 4 times in the sample, and output to the modulation circuit twenty four. The modulation circuit 24 executes modulation processing on the output of the stone horse of the error correction coding circuit 23 in accordance with the decimal of EFM, and outputs it to the data generator 26. As a matter of fact, according to the turning conversion table shown in FIG. 7 and FIG. 8 described above, the small-circle circuit 24 has a small sweep finger width (the minimum inversion interval ~ ㈨ is 2 to make the maximum scanning width (take the large inversion interval Tmax). ) Is 1〇

^ U converts the 8-bit 70 line into a M-ary record code series. Code and subcode generator 25 generates address information and so on in accordance with the recorded data. 60. Invention continued August 1244069 (55) By modulating its EFM, the 8-bit series of data bits are converted into 14 Bit's Record Ma Series. The subcode generator 25, as the subcode of the area for recording identification data, Yansheng specifically displays the ^ 8-bit series of data bits shown in the EFM conversion table of Fig. 7 and Fig. 8 and converts them into 14 bits Yuan's hand-coded series. At this time, the sub-ma generator 2 5 'is used as the sub-code of the area where the identification data is recorded, and it is demodulated after recording the identification data in the modulated 14-bit recording code series, from the 8-bit series. The second bit from the upper level of the data bit, that is, the Q channel of Zima is converted from [1] to [〇] ', and from the third bit of the upper level to the last bit, that is, to the subcode. The R ~ W channels produce the same data bits. The data in the 14-bit pattern after EFM modulation 'dissolves the reflective film by irradiating the beam on the ridges between the grooves, and when the grooves are formed virtually', the newly formed groove length is chosen to meet the modulation rules of EFM modulation, and That is, the condition that the maximum inversion is satisfied. The interval ma X is 10, and the condition that the minimum inversion interval T mi η is 2 is satisfied. As shown in the aforementioned FIG. 9C, the subcode generator 25 selects the 68th OX44h [0 1 000 1 00] as the subcode of the area in which the identification data is recorded in the decimal form of the EFM conversion table. Because OX44h becomes 14-bit during EFM modulation | [01000100100100], the light beam is irradiated on the second ridge 1 of the pattern modulated by NRZI to dissolve the reflective film, and when a groove is virtually formed, it becomes a 14-bit [ 01000100000000], during demodulation, except for the Q channel of the second bit of the upper order, it becomes 0X04h [00000100] of the fourth one in the same pattern. 'Furthermore, as shown in FIG. 9D, the subcode generator 25 uses the decimal of the EFM conversion table.

The system selects the 71st of 0X47h [0 1 0 00 1 1 1] as the subcode of the area identifying the f material. Because 0X47h became a 14-bit [00100100100100] during EFM modulation, the second ridge L -61-1244069 of the pattern modulated by NRZI was irradiated with a beam bath to reflect the film, and when a groove was virtually formed, It becomes 14 bits; [00 1 00 1 00000000], when demodulating, except for the third bit of the upper order, it becomes the seventh of the same pattern, 0X07h [00000111 :: \

The subcode generator 25 is used as the subcode of the area where the identification data must be recorded. It generates the above subcodes and reverses the specific ridges into grooves. Therefore, the data of the Q channel must be recorded in the 8-bit 殳 I column. Into [〇], and ^ two recorded identification data, and before and after the identification data is recorded, the channel R ~ w-shaped two fixed values, you can detect and / or reproduce the area of recorded identification data Device in the area. ~ As shown in FIG. 28, the data generator 26 inputs the recording data modulated by it from the modulation circuit 24, and the subcode is input from the subcode generator 25. The resource '21 generator 26 inserts the connection bit input from the connection and meta control unit 234 between the 14-bit blocks of the recording code series. The data generator% makes the note = series is 17 bits and generates the aforementioned picture! Information shown. The data generator ^ outputs the generated data to the light modulator 28. ^

The connection bit το control unit 2 3 4 generates a connection bit of 3 bits inserted between the 4-bit blocks of the recording code series. Except for the + encoding subsequent connection bits of the area where the identification data is recorded, the connection bit control section 234 refers to two consecutive blocks of the recording code series, and satisfies the maximum inversion interval TmaxMO and the minimum inversion interval Tmin of the EFM conversion rule. = 2, then select from [00〇], [100], [010], [001] to make the digital total value (DSV; Digitai SumVaie), the barn pair value smaller, and the low-frequency component The connected bits are output to the data generator 26. When the connection bit control unit 2 3 4 selects the sub-number of the recording area of the identification data as -62-1244069, the subsequent connection bits of the continuation page (57), the combination of the above four connection bits is selected to satisfy the EFM conversion rule. That is, the condition that the maximum inversion interval Tmax is 10 and the minimum inversion interval Tmin is 2 is satisfied, and a specific bit always forms a ridge. Specifically, the connection bit control unit 2 3 4 is a pattern other than [0 0 0], that is, the best DSV is selected from [100], [010], and [001] as the connection bit. For this reason, in the EF M conversion tables shown in FIG. 7 and FIG. 8, the maximum length of [0] in the first half of the recording code series is 8, the fourth one shown in FIG. 9C is 0X04h and the first one shown in FIG. 9D is The number of [〇] in the second half of 7 0 × 07h is 8. When [00〇] is used in the connection bit, the maximum reversal interval 丁 max exceeds 10 0. Furthermore, the connection bit control unit 2 3 4 ~~ L ”is used as the subsequent connection bit of the sub-encoding of the recording area of the identification data. Therefore, in the EFM conversion table shown in FIG. 7 and FIG. 8, the maximum length of [〇] in the first half of the record code series is 8, and when [1〇〇] is used in the connection bit, the maximum number of 0 is 1. 〇 'and always satisfy the maximum inversion interval T ma X. In other words, the connection bit control unit 234 selects a connection bit having at least &quot;] as a subsequent connection bit of the sub-encoding of the recording area of the identification data. The recorded data is recorded by ㈣! And reversed by [1]. Therefore, when using the connection bit with ^ 7 L 1], the sub-coded block and the subsequent blocks are more than 10%. Exceeded maximum reversal interval. In this device 221, the A / D converter is replaced with a digital signal, and the encoding circuit 2 3 is implemented with reference to FIG. 29 to explain the operation of the cutting device 2 2 丨 when the sample data to be recorded passes through the input terminal 22 a wheel 22, The A / D converter 22 outputs the data from the analog signal ^ to the error correction coding circuit 23, and the error correction Z. -63-(58) 1244069 is combined in the sample and output to the EFM conversion table for modulation data for EFM adjustment. , Replace it with 14 bits, and the area in step S202. In order to record a non-recorded area of the identification data temple, proceed to step S203 to record the identification data to a pattern other than the data generator 2 6 &lt; and the best one is used as the connection bit control step S204. 100] \ [010 Tmax = 1 0, Tmin = control unit 2 3 4 step by step. Ϋ the connection bit, and then the processing of the connection data》 Data generator 2 6 generator 25 input with the invention description continued Page fork interlaced scanning with 4 times reed Solomon code encoding packet path 2 4. In step S 2 01, the modulation circuit 24 is controlled. That is, the modulation circuit 24 outputs the data to be recorded from the 8-bit data to the data generator 26 according to the EFM conversion table according to Figs. 7 and 8. When the cutting brake device 22 1 judges whether it is the area where the identification data is recorded, the process proceeds to step S203, and the area, that is, the content data is recorded in the general mode, and the process proceeds to step S204. The connection bit control unit 2 3 4 always selects [; ι 〇〇] as the subsequent connection bit of the sub-encoding of the recording area and outputs it. In addition, the connection bit control unit 2 3 4 can also start from [〇〇〇] [100], [010], [001] select the Dsv bit. When the part 234 is not an area where identification data is recorded, it selects the connection bit that satisfies the EF M conversion rule = 2 from [00〇]] [〇0 1] according to the 14-bit data of the adjacent block. . In step S205, the best Dsv is selected from the connection bits selected in the connection bit IS204 and output to the data generator 26. In step S206, the meta-control unit 234 performs the next-to-that is, the processing from step S202. The self-modulation circuit 24 inputs data, and generates data from subcodes, and adds the data, and inserts at least 3 bits between the 4-bit--64- (59) 1244069 invention description. The connected bits generate the recorded data, and the recorded data is modulated by NRZI and output to the optical modulator 28. In addition, the laser source 27 emits laser light, and the laser light enters the optical modulator μ. The optical modulator 24 modulates the laser light according to the input from the data generator 26. That is, when the light modulator 24 has [丨] input from the data generator%, it modulates the light and emits light. The laser light modulated by the light modulator 24 is incident on the mirror 29. The mirror 29 is moved by the moving mechanism 30, so that the laser light can be scanned inside and outside the entire glass original disk 35. The laser light is condensed by the objective lens 3, and is irradiated on the glass original disk 35, which is rotated at a constant linear velocity (CLV; constant linear velocity), by the spindle motor 32 of the rotary drive unit. At this time, the objective lens 31 is driven by the objective lens driving mechanism 3 3 to change the direction of the optical axis of the laser light to form a focus control. The original disc 35 is exposed as described above, and the disc 1 with the pattern of the original disc 35 transferred to the recordable area of the recording identification data is recorded by recording 14-bit records such as 0X44h shown in FIG. 9C and 0X47h shown in FIG. 9D. The code series records the data at least in such a way that the areas of the payload and error correction codes shown in Figure 4 are all [1]. Next, a data recording device for recording identification data on the optical disc of this example formed by the above steps will be described with reference to FIG. : The data recording device 2 4 0 used at this time is also the same as the data recording device 40-, 1 4 0 described above: a spindle motor 4 1 that rotates the optical disc 2 0 1 of the present invention, and detects a pair of optical discs 2 0 1 The optical pickup of the light beam that is emitted and reflected back is 42; the control unit 4 3 that performs the focus servo control of the objective lens and the chase clothing control of the optical pickup 42 and performs the rotation control of the spindle motor 41; -65- 1244069 _ (60) Description of the invention Continued page RF amplifier 4 4 that generates RF signals and the like by the detection output detected by the optical pickup 42; Synchronous signal detection unit 45 that generates clocks by detecting the synchronization signal from the RF signal; A subcode extracting section 46 for extracting a subcode from the RF signal; a subcode demodulating section 47 for demodulating the 14-bit subcode subjected to EF M modulation into 8 bits, and generating a subcode of the P ~ W channel subcode; and The detecting section 4 8 for detecting the sub-codes of the R to W channels. These structures are the same as those of the above-mentioned data recording devices 40, 140, and therefore the same symbols are given, and detailed descriptions thereof are omitted.

The data recording device 2 40 shown in FIG. 30 includes a first switching unit 249 for switching to the recording identification data mode, a connection bit detection unit 250 for detecting subsequent connection bits of the sub-code, and modulation identification data. Modulation section 2 5 1; second switching section 2 5 2 that switches input of identification data recorded in optical disc 1; recording processing section 2 5 3 that performs recording processing when recording identification data in optical disc 2 1; and An output control unit 254 that controls the output of the light beam emitted from the optical pickup 42.

In the data recording device 24 of this example, the subcode extraction unit 46 extracts a 14-bit subcode set after extracting the frame synchronization signal from the data input by the RF amplifier 44 and outputs it to the recording area of the designated identification data. The used subcode demodulation unit 47 is then output to the connected bit detection unit 250 through a first switching unit 249 for detecting subsequent bits of the subcode. The subcode demodulation section 47 converts the subcode of the area in which the identification data is recorded from 14-bit data to 8-bit data according to the EFM conversion table. The subcode demodulation section 47 constitutes one block with 98 frames, and generates subcodes for P, Q, R, S, T, U, V, and W channels. That is, the sub-code demodulation section 47 generates P 1 to W 1 to P 9 6 to W 9 6, that is, it generates sub-codes of 96 bits. Then, the subcode demodulation section 4 7 -66- (61) 1244069 Description of the Invention Continued page The address information and the like extracted from the subcode are output to the control section 43. If this is not the case, the control unit 43 may cause the optical pickup 42 to enter the recording area of the identification data. The detecting section 48 detects whether the negative material of the identification data pattern ^, is displayed. That is, the detection section 48 shows that the ADR detection of the Q channel is. ❻ Record the data of the identification data pattern. At this time, when the detection unit 48 is not in the mode for recording the identification data, an error message is output from the output terminal 2 5 5 and the error message can be displayed on the monitor. In addition, when it is the mode for recording the identification data, it is a round. Outgoing = Show its notification message, which can be displayed on the monitor, etc. The detection unit activates the first and second switching units 249, 252 only when the recording identification data mode is formed. Connection bit detection unit 25 0 determines the sub-code of the area where the identification data is recorded

Whether or not the subsequent connection bit of 为 is a specific value, 4 θ is non-inflammatory L ~ m, if 疋 is the above-mentioned [1〇〇]. Of course, the 'connecting bit detection section 2500 ’is also open, # 广, 力 拉, υ Wan Kejin whether the connecting bit is not [000], that is, whether the connecting bit is 士 r, and 疋 古 has [1] Judgment. For this reason, if it is a connection bit other than a specific value, at 4 &amp; μ — when 3 is recorded, the Tmax exceeds 10, which may violate the EFM conversion rule | 丨 narrow rules. Then, the connection bit detection unit 2 50 activates the second switching unit 2 5 2 ′ at a specific value of the subsequent connection bit of the sub-coding, and turns off the second switching unit 252 when the second switching unit 2 5 2 ′ is not a specific value. That is, the second switching unit 2 5 2 does not input identification data from the modulation unit 2 5 1 to the record ^ and 邛 2 5 3 when the subsequent code 诖 and the connection bit το are not specific values. The connection bit detection unit 250 can output an error message from the output terminal 255 when the connection bit is not a specific value. The sub-display is not on the monitor, and the user is notified by water. The modulation unit 251 withers a specific modulation X々ww-u withered from the input of the input terminal 25 6 to identify the lean material, and outputs it to the recording processing unit through the second inquiry unit 2 5 2 ~ 67-1244069 Mengming description Continued page 2 / Excessive processing section 2 5 3 Performs necessary recording processing for recording on disc 1. I roll out the data for recording processing to the optical pickup 42. In addition, the data input from the terminal 2 5 6 of the wheel 2 is the data shown in FIG. 4 described above. The duo 'refers to the recording operation of the data recording device 240 configured as described above with reference to FIG. When the user first presses the recording button for identifying the data, the data recording device 240 'the spindle motor 41, i rotates at a certain linear speed on the optical disc 2 on the optical disc table constituting the ^ disc installation. And the optical pickup irradiates the light beam on the optical disc 201. At this time, the output control section 254 controls the semiconductor laser of the optical pickup 42 so that a standard output light beam is emitted. The optical pickup and the control unit 4 are controlled to focus and acquire data in a state of focusing and tracking servo. ^ σ term. When the detecting section 48 determines that it is not the area where the identification data is recorded, the first and second switching sections 249 and 252 are turned off, and the process proceeds to step S214. In addition, the detection section 48 can also specify the area where the identification data is recorded by detecting whether the subcode of the R ~ W channel is a fixed value, and set the device as the data recording device 240 to record the identification data in a specific area. Here, the optical pickup U jumps beyond the recording area of the identification data in accordance with the subcode Toc and the like demodulated by the subcode demodulation section 47. The material recording device 24 extracts the subcode of the recording area of the identification data by the subcode extraction unit 46, and outputs the 8-bit data to the detection unit 48 after demodulation by the subcode demodulation unit 47. In step 3311, the i detection section 48 uses the identification data in the ADR of the subcode of the Q channel to determine whether it is the area where the identification data is recorded. When it is determined that it is the area where the identification data is recorded, the first and second switching sections 249, 252 are activated. Progressive Z step s3 / 2 -68- 1244069 (63) I Invention description The recording mode of the continuation data of different pages can also be specified whether the recording position is a ridge or a combination of these. In step S 3 12, the connection bit detection unit 2 5 ′ judges whether the subsequent connection bit of the sub-coding is the above-mentioned [丨 〇〇] in the recording area of the identification data. Of course, the 'connected bit detection unit 2500 can also determine whether the connected bit is not [000]', that is, whether the connected bit has [1]. The connection bit; 1 ^ testing unit 250 is activated when the remote connection bit is a specific value, and the second switching unit 2 5 2 ′ is activated and the process proceeds to step S 3 1 3 to perform recording processing of identification data. When the connection detection unit 2 50 is not a specific value, the second switching unit 2 5 2 is turned off, and the process proceeds to step S 3 1 4 ′ and the identification data cannot be recorded. That is, in step S 3 1 4 'even if it is a mode of recording identification data, if the connection bit is not a specific value', when recording the identification data, Tmax will exceed 1 0, which may violate the EF Μ conversion rule, so even the first The switching section 2 4 9 is activated, and the second switching section 2 5 2 is still closed.

In step S 3 1 3, when the identification data is input from the input terminal 2 5 6, the modulation section 2 51 modulates the identification data in a specific manner. The modulation section 2 51 outputs the modulation identification data to the recording processing section 2 5 3 through the second switching section 2 5 2. The recording processing section 2 5 3 outputs to the optical pickup 4 2. At this time, the output control unit 254 switches the output of the semiconductor laser from the standard level to the high level in order to thermally record the identification data by dissolving the reflective film. The data recording device 2 4 0 records the data in the recording area of the subcode of the Q channel shown in FIG. 4 by virtually forming a groove on the ridge, that is, from the lower 4 bits of the UDI index to the 84 bits of the CRC. Specifically, Lu's data recording device 40 is recorded in the lower 4 bits of U DI inde X. § Recorded time and record completion time, etc., followed by 56 bits of ud I (64) 1244069 Description of the invention continued The page P y 0 ad records the identification information ', followed by the 8-bit AFRA M E recording address and other address information, and the 16-bit CRC records the error correction code. In step S 3 1 4, when the detection unit 48 is not in the recording identification data mode, an error message is output from the output terminal 2 5 5 and the like, and the error σ can be displayed on the monitor. At this time, the detection unit 48 closes the first and second switching units 2 4 9 and 2 5 2 ′ to prohibit the recording of the identification data. The connected bit detection unit 25 outputs an acquaintance 255 when the connected bit has a non-specific value, and displays an error message on the &amp; monitor to notify the user. The connected bit detection unit 25 turns off the second switching unit 2 52, and does not perform recording processing of identification data. Hereinafter, these data recording methods will be described with reference to FIG. 32. In addition, the example shown in this figure is obtained by changing 0X47h shown in FIG. 9D to 0X07h. Before identifying the tribute record, the pattern A before the identification data record is as shown in (A) of FIG. 32. 'The connection bit of [〇〇〇] is inserted after the 24-bit frame synchronization signal.' Second record [00 1 00 1 00 1 00 1 00] (〇X47h), followed by the connection bit of [1 0 0]. Disc 1 is provided with a ridge L1 of 11T after a groove p 1 of length T, followed by a groove P2 of 7T, and a ridge L2 of 3T

′ Secondly, a trench T 3 of 3 T is provided, secondly a ridge L 3 of 3 T is provided, secondly a trench P 3 of 3 T is provided, and secondly, a ridge L 4 of 3 T or more and 11 T or less are provided. The material &quot; Jiluo split 240 irradiates a high-output light beam `` valley deflection film for thermal recording due to the groove P3 to the groove P4, and virtually forms a groove connecting the groove P3 and the groove P4 at the position of the ridge L 3, Then, the recorded pattern eight shown in (B) in FIG. 32 is formed. In addition, ice, only + is juice. Nine beams can also be partially irradiated on the ridge L 3. Therefore, in the sub-code area of the pattern A after the recording, a pattern of [0010, 100, 000, 000, 000] -70-1244069 (65) The description of the continuation page (0X07h) is recorded. That is, in the optical disc}, a ridge L 1 1 of 1 T is set after the groove pn of the length of ιτ, a groove P 1 of 7 T is set next, a ridge L12 of 3 τ is set next, and a groove P13 of 9T is set next, Secondly, a ridge L13 of 3 bits or more and ΠT or less is set. That is, the ridge L4 (L13) makes the length of the groove 13 less than 1 1 T, and does not exceed 1 1 T with the first half of the channel bit of the subsequent block to avoid violating the conversion rule of E F M. In the following description, when the pattern of the frame synchronization signal is opposite to the above example, as shown in (C) in FIG. 3, the pattern β before the recording of the identification data is inserted into the connection bit of [001] after the 24-bit frame synchronization signal. It: The child code of the parent record [00100100100100] (0X47h), followed by the connection bit of [100]. The disc 201 is provided with a ridge L21 of 11T after a ridge L21 of a length of 11T, followed by a ridge L22 of 4T, a ridge P22 of 3T, a ridge L23 of 3T, a ridge P23 of 3T, and a ridge L24 of 3T Secondly, a ditch P24 of 3T is provided, and a ridge L25 of 3T or more and 11 1T or less are connected. The data recording device 240 irradiates a high-output light beam from the grooves P23 to P24, dissolves the reflective film for thermal recording, and virtually forms a groove connecting the groove P23 and the groove P24 at the position of the ridge L24, thereby forming (D in FIG. 32) ) After recording the pattern B shown. That is, a pattern of [00100100000000] (0X07h) is recorded in the subcode area of the pattern B after recording. Therefore, in the optical disc 201, an 11T ditch P31 is set after a 11-length ridge L31, followed by a 4T ridge L32, a 3T ridge P32, a 3T ridge L33, and a 9 T ridge P3. 3. Secondly, a ridge L34 of 3 T or more and 1 1 T or less is connected. That is, the ridge L25 (L34) makes the length of the groove 33 less than 11T, so that the distance to the first half of the channel of the subsequent block does not exceed 1244069 (_ (66) I Invention Description Continued 1 1 T, to Avoid violating the conversion rules of EFM. In this way, the data recording device 240 forms a pattern including grooves and ridges corresponding to the identification data by turning on and off the high-output light beam, and records the identification data in the subcode of the Q channel. In the method, a subsequent connection bit of a subcode in a subcode is used to designate a recording area of identification data, and the identification data can be recorded in the designated area.

Next, a data reproduction device 260 that reproduces data from the optical disc 201 on which the identification data is recorded by the data recording device 240 described above will be described with reference to Figs. The data recording device 26 is provided with a spindle motor 2 6 1 that rotates the optical disc 2 01 recorded with identification data; an optical pickup 2 6 2 that detects a light beam emitted from the optical disc 2 1 and reflected back; Control section 263 for focusing servo control and tracking servo control of the objective lens of the pickup 2 6 2 and performing rotation servo control of the spindle motor 2 6 1; RF amplifier 264 that generates RF signals and the like from the output of the optical pickup 262 ; Sync signal detection section 26 5 that generates clocks by detecting sync signals from RF signals; demodulation section 2 6 6 that demodulates content data such as EFM-modulated recording data; and error correction of demodulated data Processed error correction processing section 2 6 7. The data reproduction device 260 includes a subcode extraction unit 268 that extracts subcodes from the RF signal; demodulates the 14-bit subcode of the EF M modulation into 8 bits, and generates a subcode of the subcode of the P ~ W channel. Section 269; Detection section 2 7 0 for detecting the area where the identification data is recorded; First switching section 2 7 1 for switching to the reproduction identification data mode; Connection bit detection section 2 7 2 for detecting subsequent connection bits of the sub-code ; The second switch to switch the input of identification data recorded in disc 1 -72-1244069

DESCRIPTION OF THE INVENTION Continued on page 9 7 ^ ρ a / 3, and a decoder 274 that decodes identification data. In the same way, the optical disc spindle motor 261 is similar to the optical disc table of each of the above-mentioned data reproduction apparatuses, and urges the optical disc pickup 262 to be centered on the optical disc table, and rotates the earth optical pickup 262 as in the above-mentioned data reproduction apparatus. Object penetration: the light beam emitted from the semiconductor laser is focused and irradiated on the signal recording surface of the optical disc 1, and the light beam reflected by the recording surface of the letter 4 of the optical disc 丨 is detected by a light detector, and the The detection signal is converted and rotated out to the RF amplifier 264. The air amplifier 264 generates an RF signal, a focus error signal, and a tracking error signal according to the lucky number = from the photodetector constituting the optical pickup 262. The water focus error signal is generated and tracked by the astigmatic aberration method. Error Lu Su == beam method ,! Generation method. The RF amplifier 264 outputs the RF signal to the demodulation unit 266 for the purpose of finding the material of the heart's clock system. 1 And: the focus error signal and the tracking error signal are output to the temple service control unit-the Bubuhua number detection unit 265. The RF signal detects the amplitude synchronization f shown in FIG. 1 and detects the pound sign when the sub-codes shown in steps 2 and 3 of FIG. 2 are decoded. The synchronization signal detection unit 265 generates a clock from the signal. The feeding control department 2 6 3 according to the white 0rt, and tracking error number, "2 6 4 focus error input ^ and keep these" to the wide focus servo signal and tracking servo signal drive circuit 2 = = Jiyi of the object-transmitting moving mechanism of taker 262 a The object-transmitting box control signal and tracking control signal held by the object-lens driving mechanism in the focusing direction with the object and the light with the object lens Chasing side of orthogonal axis = -73- 1244069 (68) Description of the invention Continued page for driving displacement. The clock of the self-synchronizing signal generated by the control section 2 6 3 is synchronized with the frequency and phase of the reference clock of the crystal oscillator to generate a # turn servo signal. Based on this, the spindle motor 261 rotates the disc by CLV}. The demodulation section 266 demodulates recorded data such as content data based on the decimal of the EFM. Specifically, the demodulation section 266 converts a 14-bit recording code series into an 8-bit series of resource bits based on the Efm conversion tables shown in FIG. 7 and FIG. 8 described above. The error correction processing section 267 demodulates the demodulated recording data according to decimal such as CIRC and outputs it to the output terminal 2 7 5. If the recorded data is audio data, the audio data output from the output terminal 2 7 5 is converted by D / A converter from digital signal to analog signal, and self-made a, dipper, headphones and other audio conversion parts output . The subcode extraction section 2 6 8 extracts a 14-bit subcode set after the frame synchronization signal from the input data of the RF amplifier 2 6 4 and outputs it to the subcode demodulation section 2 6 9. The subcode demodulation section 269 converts 4-bit data into 8-bit data according to the EF M conversion table. The sub-code demodulation section 269 constitutes a} block with 98 frames, and generates sub-codes for P, Q, R, S, T, ϋ, V'W channels. That is, the subcode demodulation section 269 generates P1 to W1 to P96 to W96, that is, generates a 96-bit subcode. The detection section 270 detects a mode for reproducing the identification data. That is, the detection unit 27 refers to the area where the identification data is recorded by detecting whether the A D R of the Q channel is a mode for reproducing the identification data. When the detection section 2 70 detects the identification data showing the mode of the reproduction identification data, the first and second switching sections 2 7 i and 2 73 are activated. When the detection unit 270 cannot detect and display the identification data of the mode of reproducing 4 types of data, it indicates that it is not the recording area of the identification data 'and closes the first and the first -74- 1244069 _ (69) I Description of the invention continued page

Two switching sections 2 7 1, 2 7 3. In addition, the detection unit 2 7 0 outputs an error message from the output terminal 2 7 7 when it is not in the mode for recording identification data, and an error message can be displayed on the monitor. When it becomes the mode for recording the identification data, it outputs from the terminal 2 7 7 The notification message is output and displayed on a monitor or the like.

The connection bit detection unit 2 7 2 determines whether the subsequent connection bit of the sub-code of the area where the identification data is recorded is a specific value, such as whether it is the above-mentioned [1 0 0]. Of course, the connection bit detection unit 272 can also determine whether the connection bit is not [0 0 0], that is, whether the connection bit has [1]. Therefore, if it is a connection bit other than a specific value, Tm ax exceeds 10, which may violate EFM conversion rules and fail to demodulate identification data. In addition, when the connection bit is not a specific value, it may not be a regular disc. When the subsequent connection bit coded by the child bit of the connection bit detection unit 2 72 is a specific value, the second switching unit 2 7 3 is activated, and when it is not a specific value, the second switching unit 2 7 3 is turned off. That is, when the subsequent connection bit of the sub-coding of the second switching section 2 7 3 is not a specific value, the identification data is not input from the sub-code demodulating section 2 6 9 to the decoder 2 7 4. The connection bit detection section 2 7 2 can output an error message from the output terminal 2 7 7 when the connection bit is not a specific value, and displays it on the display to notify the user. The decoder 2 7 4 inputs the sub code of the Q channel from the sub code demodulation section 2 6 9 via the second switching section 2 7 3. The decoder 2 7 4 refers to the recording completion time of U DI inde X shown in FIG. 4 described above, etc., and demodulates the identification data recorded in UDI pay 1 〇ad, and then uses CRC to perform error correction processing and outputs To output terminal 276. Next, the data reading operation of the data reproduction device 260 described above will be described with reference to Fig. 34. When the user presses the reproduction button, the data reproduction device 2 60 drives the mandrel -75- 1244069 _ (70) Description of the invention continued page

The motor 2 6 1 rotates the optical disc 2 (H) mounted on the optical disc table constituting the optical disc mounting portion at a constant linear speed. The optical pickup 2 6 2 irradiates the light beam on the optical disc 2 0. At this time, the semiconductor laser The light beam is emitted with a standard output. Data is read under the state that the optical pickup 2 6 2 is controlled to focus and track by the control unit 2 6 3.

The data reproduction device 2 6 0 reads the identification data, and its control section 2 6 3 makes the optical pickup 2 6 2 track jump over the identification based on the TO C of the sub code demodulated by the sub code demodulation section 2 6 9. Recording area of data. The data reproduction device 2 60 extracts the sub-codes of the recording area of the identification data by the sub-code extracting section 2 68, and outputs the 8-bit data demodulated by the sub-code demodulating section 2 69 to the detecting section 270. In step S321, the detection section 270 uses the identification data in the ADR of the subcode of the Q channel to determine whether it is an area where the identification data is recorded. When it is determined that the area where the identification data is recorded, the first and second switching sections 2 7 1 and 2 7 3 are activated, and the process proceeds to step S 3 2 2. When the detecting section 270 determines that the area is not recorded with the identification data, the first and second switching sections 271 and 273 are turned off, and the process proceeds to step S32.

In addition, the detection unit 270 may designate an area where the identification data is recorded by detecting whether the subcodes of the R to W channels are fixed values, and set the device to the reproduction mode of the identification data. Alternatively, it is also possible to specify whether the recording position is a ridge, and furthermore, it may be specified by a combination of these. In step S 3 2 2, the connection bit detection unit 2 7 2 determines whether the subsequent connection bit of the sub-encoding in the recording area of the identification data is the above-mentioned [1 0 0]. Of course, the connection bit detection unit 272 can also determine whether the connection bit is not [000], that is, whether the connection bit has [1]. The detection unit 2 70 starts the second switching unit 2 7 3 when the connection bit is a specific value, and enters -76-1244069 _ (71) I Description of the invention Continuation step S 3 2 3, which can identify the data Regeneration processing. In addition, when the detection unit 2 70 is not a specific value, the second switching unit 2 7 3 is turned off, and the process proceeds to step S 3 2 4 to prohibit the reproduction of the identification data. That is, even if the step S 3 2 4 is a mode for regenerating the identification data, when the connection bit is not a specific value, the Tm ax exceeds 10, which violates the EF Μ conversion rule, and the identification data may not be demodulated. Besides, It is an irregular optical disc, so even if the first switching section 2 7 1 is activated, the second switching section 2 7 3 is still closed.

In step S 3 2 3, the data reproduction device 2 60 outputs the identification data to the decoder 274 via the second switching unit 2 73 from the subcode demodulation portion 2 69. The decoder 274 performs demodulation and error correction processing, and outputs it to the output terminal 276. Then, if the reproduction of the identification data is used as a condition, the content data recorded on the optical disc 2 01 is demodulated by the demodulation section 2 6 6 and then subjected to error correction decoding processing by the error correction processing section 2 6 7 and output from the output terminal. 2 7 5 output. If the content data is audio data, etc., the D / A converter is used to convert the digital signal into an analog signal and output it from audio converters such as headphones, headphones, and headphones.

In step S 3 2 4, when the detection unit 2 70 is not in the regeneration identification data mode, an error message or the like can be output from the output terminal 277, and the error message can be displayed on the monitor. At this time, the detection unit 270 turns off the first and second switching units 271 and 273, and prohibits the reproduction of the identification data. The connection bit detection unit 2 7 2 can output an error message from the output terminal 2 7 7 when the connection bit is not a specific value, and display it on the monitor to notify the user. The connected bit detection unit 2 7 2 is turned off, and the second switching unit 2 7 3 is not used to reproduce the identification data. As detailed above, when applying the optical disc 2 0 1 of the present invention to record identification information in the sub-code shown in FIG. 1, as shown in FIG. 3 2, the conversion rule of EF Μ-77-1244069 invention description page, also That is, the identification data is recorded in accordance with the rule of the maximum inversion interval τ ma X = 1 0. That is, in the area where the identification data is recorded, the connection bit having at least [1] is selected in the subsequent connection bits of the sub-code, so that the identification data can always be recorded without violating the conversion rule of E F M. That is, by using the above method, the identification data can be recorded without affecting the subsequent data. Next, a fourth embodiment of the optical disc to which the present invention is applied, a data recording apparatus and method for recording data on the optical disc, and a data reproduction apparatus and method for reproducing data recorded in the optical disc will be described with reference to the drawings. The optical disc used here is the same as the aforementioned optical disc. 'TOC (Table of Contents) data and other reading areas are provided on the inner periphery side, and the outer side side is provided with data records such as content and other recorded data. The area has a read-out area on the outer peripheral side, and the data in the same recording format c ′, that is, the data of 8-14 modulation (EFM modulation · Eight to Fourteen Modulation) is recorded in the recording format shown in FIG. 1 described above. The optical disc used here is also manufactured through the steps shown in FIG. 5 described above. The original disc for manufacturing the optical disc is manufactured using a cutting device 3 2 1 having a structure shown in Fig. 35. The cutting device 3 2 1 has the same basic structure as the cutting device 21 shown in FIG. 6 described above, and will be described in detail with reference to FIGS. The cutting device 3 2 1 shown in FIG. 3 also has: laser sources 3 2 7 such as argon laser, helium-cadmium laser, and other gas lasers; by using a Pockels effect photoelectric modulator (EOM; Electorical Optical Modulator) and Ultrasonic Acoustic-Optical Modulator (A0M; Acoustic-Optical Modulator), etc., the light modulator 3 2 8 that modulates the laser light according to the data of the data generator 3 2 6; reflects the reflection of the modulated laser light Mirror 3 2 9; Mobile unit 1244069 (73) I moving mirror 3 2 9 Description of the invention Continued structure 3 3 0; Concentrating laser light and irradiating the object lens 3 3 1 on the glass original disk 3 3 5; A motor 3 2 that rotates the glass original disk 3 3 5; and an object lens driving mechanism 3 3 3 that drives the object lens 3 3 1 in a focusing direction of the optical axis direction of the object lens 3 3 1. The error correction coding circuit 3 2 3 constituting the cutting device 3 2 3 is implemented by cross-interleaving reed-solomon code (CIRC) decimal of the digital content of the analog, and the cross-interlacing is implemented in the sample. Scan the code of the reed Solomon code with the 4th reed, and output it to the modulation circuit 3 2 4. The modulation circuit 324 performs modulation processing on the coded output of the error correction coding circuit 3 2 3 according to the decimal of the EFM, and outputs it to the data generator 3 2 6. Specifically, the modulation circuit 324 is based on the efm conversion table shown in FIG. 7 and FIG. 8 above, and the minimum scan width (minimum inversion interval minmin) is 2 so that the maximum scan width (maximum inversion interval 丁 ^) For 10, the 8-bit series is converted into a 14-bit recording code series. The sub-code generation is 3 2 5 and the sub-codes such as address information are generated according to the recorded data, and the EFM is modulated to convert 8 The data bits of the bit series are converted into a 14-bit record code series. The sub-code generator 3 2 5 is used as a sub-code of the area where the identification data is recorded, and generates specific display in the EFM conversion table of FIG. 7 and FIG. 8 The 8-bit series of data bits are converted into a 14-bit recording code series. Specifically, the sub-code generator 3 2 5 is used as the sub-code of the area where the identification data is recorded. When the identification data is recorded in the bit-coded record code series and demodulated, the second bit from the upper level of the data bit of the 8-bit series, that is, the Q channel of the subcode is converted from [1] to [〇] , And since the above 1244069 _ (74) I invention description continued the third bit to the last bit, that is, to The same data bits are generated in the R ~ W channels of the code. This data is used to dissolve the reflective film by irradiating the beam on the ridges between grooves in the 14-bit pattern after EF M modulation. The formed trench length is selected to satisfy the modulation rule of EF M modulation, that is, the condition that the maximum inversion interval T ma X is 10 and the minimum inversion interval τ mi η is 2.

As shown in the aforementioned FIG. 9A, the subcode generator 325 selects the 64th of 0X40h [0 1 000000] as the subcode of the area in which the identification data is recorded, in the decimal form of the EFM conversion table. Because 0X4 Oh becomes 14-bit [01001000100100] during EFM modulation, the beam is irradiated on the third ridge L of the pattern modulated by NRZI to dissolve the reflective film, and when a groove is virtually formed, it becomes 14-bit [01001000100000] ], During demodulation, except for the q channel of the upper second bit, it becomes the 0th OXOOh [00000000] of the same pattern.

As shown in FIG. 9C, the sub code generator 3 2 5 selects the 68th of 0X44h [0 1 0 0 0 1 0 0] as the sub code of the area in which the identification data is recorded by using the decimal of the EF M conversion table. It is because [01000100100100], which becomes 14 bits during EF M modulation at 0 X 4 4 h. When the second ridge L of the pattern modulated by NRZI is irradiated with a light beam to dissolve the reflective film, when the groove is virtually formed, it becomes 1 4 Bit # [01000100000000], when demodulating, except for the Q channel of the second bit of the upper order, it becomes 0X04h [00000100] of the fourth one in the same pattern. Furthermore, as shown in FIG. 9D, the subcode generator 3 2 5 selects the 71st of 0X47h [0 1 000 1 1 1] as the sub code of the area in which the identification data is recorded in decimal of the EFM conversion table. Because 0X47 h becomes 14 bits during EFM modulation-u

[00100100100100] In the second ridge of the pattern modulated by NRZI, L -80-1244069 Description of the invention. Continued. Μ 各 J Π7) Peak 彳 Secret P &gt; ΥλΊ ^ / ¾. ΠτΤ 7 double, ¾! 4 V Tf_ P ^ j [00 1 00 1 00000 0 00 Ί ^ During demodulation, divide the second bit of the upper order Outside the Q channel, it becomes the seventh of the same pattern, 0 X 0 7 h [0 0 0 0 0 1 1 1].

The subcode generator 3 2 5 is used as the subcode of the area where the identification data must be recorded. By generating the above subcode, the specific ridge is reversed into a groove. Therefore, the data of the Q channel must be recorded in the 8-bit series, so that [1 ]] Is reversed to [0], and the identification data can be recorded, and the channels R to W can be fixed to a fixed value before and after the identification data is recorded, and the area where the identification data is recorded and / or reproduced can be detected or the area where the identification poor data is recorded. Zone installation.

As shown in Fig. 3, the material 3 3 6 self-modulation circuit 3 2 4 is input with EFM-modulated recording data, and the sub-code is input from the sub-code generator 3 2 5. The data generator 3 2 6 inserts 3-bit connection bits between 14-bit blocks of the recording code series. Specifically, the data generator 3 26 satisfies the maximum inversion interval T ma X = 1 0 and the minimum inversion interval T mi η = 2 of the EF M conversion rule, and then from [0 0 0], [1 0 0], [0 1 0], [0 0 1] select the connection bit that makes the absolute value of the digital total value (DSV; Digital Sum Vale) smaller and has less low-frequency components. A 3-bit connection bit is inserted between blocks. Then, the data generator 3 2 6 uses the record code series as 17 bits to generate the data shown in FIG. 1. The data generator 3 2 6 outputs the generated data to the light modulator 3 2 8. The data generation source 3 2 6 generates the connection bits for specific subcodes such as 0X4 0h, 0X44h, 0X4 7h when identifying the recording area of the tributary material. The data generator 3 2 6 is connected to a discrimination unit 3 3 4 which discriminates a connection bit of an area where the identification data is recorded. The discriminating section 3 3 4 chooses to insert a synchronization letter in the data generator 3 2 6 -81- 丨 Description of the invention continued 1244069 -w 1--Taxi Ui ... Π \! Lee! ^ urr '^! Ί 言 ’! To Λ Μ γ, 卩.,! ) JL.-^-· I ... '...-. The combination determines whether the EFM conversion rule is met, that is, whether the maximum inversion interval Tmax is 10 and the minimum inverse spine interval Tmin is 2, once it is in a specific position Yuan always forms the ridge. In the following, a subcode using the 64th 0 × 4 0 h of the identification data in the decimal format of the EF M conversion table will be described using FIG. 36. In the example shown in (a) of FIG. 36, the synchronization signal is provided with a 1 1 T groove after the 1 1 T ridge. The subcodes of 0 X 4 0 h are virtually formed as grooves because of the lower 3 bits of [1 0 0] in the 14-bit record code series, which are used for recording identification data, so they must always be ridges. Therefore, the child code of 0X40h must be a pattern starting from the ridge. In addition, at the end of the synchronization signal, [1] of the second bit of the lower order is inverted into a ridge. Therefore, the data generator 3 2 6 selects [000] as the continuous bit between the synchronization signal and the sub code, and the sub code of 0 × 4 Oh is the connected bit from the ridge. In addition, in the example shown in (B) in Fig. 36, the 'synchronization signal' is provided with a ridge of 1 1T after a groove of 1 1 τ. The lower order 3 bits of the 0X4 Oh code must be ridges all the time, so they must be patterns starting from the ridges. In addition, the last of the synchronization signal is the inversion of the second bit [丨] into a groove. Therefore, the data generator 326 selects [] as the continuous bit between the synchronization signal and the subcode to satisfy the conversion rule of EFM. And the subcode of 0X4Oh is from the ridge. Use Figure 37 to explain the conversion of F + ^, mountain ^ &quot; in decimal using E F μ to use the 68th 〇χ44 of the recording area to identify the tributary code 妁 subcode. In the example shown in (A) in FIG. 37, the sync signal is provided with a 11T groove after the ridge of the T. 〇x44h of -82, 1244069 (77) R states that 码 subcode, because in the 14-bit record code series, [1〇〇] from the 9th to the 11th bit of the upper order is used for recording identification data The ditch is virtually formed, so it must always be a ridge. Therefore, the child code of 0X44h must be a pattern starting from the groove. In addition, the last of the synchronization signal is [1] in which the second bit of the lower order is inverted into a ridge. Therefore, the data generator 3 2 6 selects [0 1 0] as the continuous bit between the synchronization signal and the subcode as the conversion rule that meets the EF M, and the subcode of 0 × 4 h is the connection bit from the beginning of the groove. . In addition, in the example shown in (B) in FIG. 37, the synchronization signal is provided with a ridge of 11T after the groove of 1 1 τ. The 0x44h subcode [1 0 0] from the 9th bit to the 11th bit must always be a ridge, so it must be a pattern starting from the groove. In addition, at the end of the synchronization signal, [1] of the second bit of the lower order is inverted into a groove. Therefore, the data generator 326 selects [OOOO] as the continuous bit between the synchronization signal and the subcode, which meets the conversion rules of EFM, and the subcode of OX44h is the connected bit from the beginning of the groove. The subcode in which the 71st of 0X4 7h is used to identify the recording area of the identification data in decimal of the EFM conversion table will be described using FIG. 38. In the example shown in (A) and (B) in FIG. 38, the sync signal is provided with a groove of 1 1 τ after the ridge of 1 1 T. The sub code of 0 X 4 7 h is virtually formed as a groove for the record identification data from the upper 9th to 11th bits in the 14-bit record code series, so it must always be ridge. Therefore, the child code of 0X47h must be the pattern starting from the groove. In addition, the last of the synchronization signal is [1] of the second bit of the lower order, which is converted into a ridge. Therefore, the continuous bits between the data generator 3 2 6 between the synchronization signal and the subcode [0 1 〇] are selected as [0 0 1] as a conversion rule that satisfies EF M, and the subcode of 0X47h is the connection bit from the beginning of the groove. yuan. 1244069 (78 ^ Description of the invention Continuation page In the example shown in (C) in Fig. 3, the sync signal is provided with a ridge of 11T after the groove of 丨 τ. In addition, the subcode of XX47h is from the 9th bit above. [1 00] to the &quot; bit must always be a ridge, so it must be a pattern starting from the groove. In addition, the last of the synchronization signal is the inverse of the second bit [丨] in the lower order into a groove. Therefore, the data The generator 3 2 6 selects [000] as the continuous bit between the synchronization signal and the subcode, which meets the conversion rules of EFM, and the subcode of 0x47h is the connected bit from the beginning of the groove. The cutting device 32 丨 When the sampled data to be recorded is input to the A / D converter 322 through the input terminal 322a, the A / D converter 3 2 2 converts the data from the analog 彳 § number to a digital signal, and rotates to the error The correction encoding circuit 323 and the error correction encoding circuit 3 23 implement the encoding of combining interlaced scanning and 4 times the Solomon code in the sample and output to the modulation circuit 324. The modulation circuit 324 modulates the data to EFM. That is, the modulation circuit 324 According to the EFM conversion shown in Figures 7 and 8 above Table, using EFM conversion table to convert the data to be recorded from 8-bit to 14-bit, and output to the data generator 326. The sub-code generator 3 2 5 generates 8-bit Subcode, and convert it into 14-bit rounds to the data generator 3 26. Then, the data generator 3 26 has data input from the conversion circuit 3 24 and the sub code from the sub code generator 3 2 5 etc. Data, add these data, and insert 3-bit connection bits between 14-bit blocks to generate recorded data, which is modulated with NRZI and rotated out to the optical modulator 3 2 8. In addition, the laser source 327 emits laser light, and the laser light enters the light modulator 328. The light modulator 3 28 modulates the laser light according to the input from the data generator 326. -84-Description of the invention continued on 1244069 That is, the light modulator When 3 2 8 is input from the data generator 3 2 6 with [1], the laser light is modulated. The laser light modulated by the light modulator 3 2 8 enters the reflector 3 2 9. The reflector 3 2 9 is moved by a mechanism Moving 3 3 0, you can scan the laser light inside and outside the entire glass original disk 3 3 5. The objective lens 3 3 1 condenses light and irradiates the glass master 335 rotating at a constant linear velocity (CLV; Constant Linear Velocity) by a spindle motor 3 3 2 of the rotation driving unit. At this time, the objective lens 3 3 1 Driven by the objective lens drive mechanism 3 3 3 to change the optical axis direction of the laser light to form focus control. Secondly, referring to FIG. 3 9, the data record of the recorded identification data on the disc used in the identification data recording step will be described. Device. The data recording device 3 4 〇 for identifying lean material records is also equipped with the same as the aforementioned data recording device 40, 1 4 0, 2 4 0: a mandrel that rotates the disc 3 〇 丨

In one step, it is used as a recording system for recording the optical disc 3 0 1 preparation: the switching part of the input of the identification data of the modulation part of the modulation identification data, and the data recording device 34 4 shown in FIG. 39 for the identification data recording system is provided with: ^ 3 50 Switch recorded in disc 3 〇 丨 '85 -1244069; VI Qi /! ^ Γ- w ί 4 Management Department 3 5 1 it, I jirr 1 ς ο, i | jg C /) · w / ^ — mandrel horse The light f emitted from the reverse side of the optical pickup laser 30 1 integrated by the rotating stage aligned with the optical axis has been recorded here. The recording and identification information in the semiconductor is replaced by the optical disc during the reproduction. The signal is amplified by the RF orthogonal to the object axis, and the description of the invention is continued -ί 一 = 1, 三 〆 ^ .rrr · 7 ?-&gt; -rr- A 土 * Η 斗 7 = _ 广% -rrr ΐΐ R '、 ί San Γ Ze 1 Ί / ί 4 ^ y · / ^';] 口 '«~ ·» »^ * 4 ^ ^ \ wi /. I, — ^ — 'I, v,. ^ one one ▼-one,-^ and the output control of the output of the light beam emitted by the optical pickup 4 2 is controlled by 3 4 1 on the mandrel. A CD-ROM is installed. The disc table borrows the center hole of the disc 301 to clamp it in a centering state in which the rotation center of the disc 301 is consistent with the center of the center. Spindle motor 1 6 1 and disc Rotating disc 3 0 1. The detector 342 includes: a semiconductor laser that emits a light beam; an objective lens that condenses the light beam emitted from the half; and a photodetector that detects the light beam reflected by the optical disk and the film. The semiconductor laser beam is focused by the objective lens and irradiates the signal of the optical disc 3 01. The semiconductor laser is controlled by the output control section 3 5 2 and the output laser is controlled by the output control section 3 5 2. When reading the optical disc 3 0 1 for other data, the light beam is emitted at the standard output. When recording, the reflective film can be dissolved and thermal recording is performed to emit the beam at a high output level. The light beam reflected from the signal recording surface of 3 0 1 is converted to a signal by a photodetector. The photodetector outputs the electrical signal to the RF amplifier. The lens is supported by an object lens driving mechanism such as a two-axis actuator. The focus direction parallel to the axis and the light tracking direction of the objective lens are driven and displaced. The generator 3 4 4 generates an RF signal, a focus error signal, and a tracking error signal based on the output of the photodetector constituting the optical pickup 3 4 2. -86- 1244069 _ (81) Continued description of the invention For example, the focus error signal is generated by the astigmatic aberration method and the tracking error signal is generated by the three beam method and the push-pull method. The RF amplifier 3 4 4 outputs a focus error signal and a tracking error signal to the servo control unit 3 4 3. The synchronization signal detecting section 3 4 5 detects the frame synchronization signal shown in FIG. 1 from the RF signal, and detects the synchronization signal when the subcodes shown in FIGS. 2 and 3 are decoded. The synchronization signal detecting section 3 4 5 generates a clock from the synchronization signal. The control unit 3 4 3 generates a focus servo signal and a tracking servo signal based on the focus error signal and the tracking error signal input from the RF amplifier 3 4 4 and outputs these signals to the objective lens driving mechanism of the optical pickup 3 42 On the drive circuit. Thereby, the objective lens maintained in the objective lens driving mechanism is driven in the focusing direction parallel to the optical axis of the objective lens and the tracking direction orthogonal to the optical axis of the objective lens according to the focus control signal and the tracking control signal. Variable Bit. The clock generated from the synchronization signal of the control unit 3 4 3 is synchronized with the frequency and phase of the reference clock of the crystal oscillator to generate a rotation servo signal. Based on this, the spindle motor 3 4 1 rotates the optical disc by CLV 3 0 1. The sub-code extraction unit 3 46 extracts a 14-bit sub-code set after extracting the frame synchronization signal from the data input from the RF amplifier 344, and outputs it to the detection unit 4 7 ', and outputs it to the recording area for specifying the identification data. The sub-code demodulating section 3 4 8 ° detecting section 3 4 7 detects whether the position where the identification data is recorded is a ridge. That is, the detection section 3 4 7 determines whether the position indicated by the arrow in FIGS. 36 to 38 is a ridge. The detection section 3 4 7 can output the detection result from the output terminal 5 4 to a monitor or the like, and display an error message or the like on the monitor. In addition, when the detection section 3 4 7 is a groove before the recording position of the identification data, the recording position can also be determined to be (82) 1244069. Description of the invention Sequential page ridge 0 / Code demodulation section 3 4 8 The area of identification data "Zima is converted from 14-bit data to 8-bit data. The sub-code demodulation section 3 4 8 constitutes 1 block with 98 frames, and,

Form the subcodes of P, Q, R, S, T, U, V, and W channels. That is, the early subcode demodulation section 3 4 8 generates pi ~ wl P96 ~ W96, that is, generates a 96-bit sub-ma. On the other hand, the sub-code demodulation section 3 4 8… and the extracted address information are output to the control section 343. Thereby, the control section 343 can cause the optical pickup 342 to enter the recording area of the identification data. The withering section 3 50 uses 1% of the specific modulation method. Be careful, the flying withering is input from the input worm 3 5 3 and the 4 beaker, and the output is 5 to 5 through the switching section 349 ^ ^ 349 0 Λ ^录 处理 部 351. The switching port M49 is switched in accordance with 3 47 ^^ of the detection section 347. That is, when the detection section recognizes that the recording position of the shell material is a ridge, it starts to be modulated by the modulation section 3, 50. Enter, add, add ^, Beko output to the redundant recording processing unit 3 5 1 Only double-check the 347 when the 34Q Ding Bing ton position of the identification data is closed, the switching unit is closed: ^ The identification modulated by the modulation unit ⑽ The data is output to the recorder. Note: The processing unit 351 records the data on the optical disc 301 and uses it for record processing. The data that has been processed by the recorder is sent to the optical pickup 7 inches and output to the optical pickup 3 4 2. Tool 5 Jiner Mingming Recording Action: First: Up: Chengzhi: Body Recording Device ". The recording device for identification data 340 1 When the user knows the recording button for identification data, the data device 342 irradiates light on the disc table The optical disc 301. And the output of the optical pickup standard is emitted :: on the disc 3〇1. At this time, the 'output control section 3 5 2 controls the semiconductor laser of the optical pickup in a standard manner. And • 88-1244069 Description of the invention continued page (83) The optical pickup 3 4 2 starts reading data in a state where the control unit 3 4 3 controls the focus and tracking servo.

As shown in FIG. 40, in step S 3 01, the data recording device 3 4 0 records the identification data in a specific area, and the control unit 3 4 3 performs demodulation of the subcodes based on the subcode demodulation unit 3 4 8. Τ Ο C, etc., make the optical pickup 3 4 2 jump over the recording area of the identification data. Next, the data recording device 3 4 0 extracts the sub code of the recording area of the identification data by the sub code extraction unit 3 4 6 and outputs 14-bit data to the detection unit 3 4 7. In step S 3 02, the detection unit 3 4 7 determines whether the position indicated by the arrow in Figs. 36 and 38 is a ridge. When the detection portion 3 4 7 is a ridge, the switching portion 3 4 9 is activated in step S 3 0 3. When the recording portion is a ditch, the switching portion 3 49 is closed in step S 3 0 4 and the next portion is searched. When the identification data is input from the input terminal 3 5 3, the modulation unit 350 modulates the identification data in a specific manner. When the detection section 3 4 7 is activated, the modulation section 3 5 0 outputs the modulated identification data to the recording processing section 3 51 via the switching section 3 4 9. The recording processing section 3 5 1 outputs to the optical pickup 342.

In addition, the recording area of the identification data can also be specified by using the identification data in the ADR of the subcode of the Q channel, and the area of the identification data can also be specified by detecting whether the subcode of the R ~ W channel is a fixed value, and the device is set to Identify the recording mode of the data. At this time, the output control section 3 52 switches the output of the semiconductor laser from the standard level to the high level in order to thermally record the identification data by dissolving the reflective film. The data recording device 340 records data in the recording area of the subcode of the Q channel shown in FIG. 4 above, that is, from the lower 4 bits of the UDI index to the 84 bits of the CRC. Specifically, the data recording device 40 is below the UDI index. 4 -89- Ϊ244069 (84) Description of the invention The recordable time and record completion time in the continuation bit are the second, followed by the 56-bit UDI payload. Record identification data, followed by address information such as frame number in AFR A ME of 8 bits, and error correction code recorded in CRC of 16 bits. Hereinafter, a method of recording such data will be described with reference to FIG. 41. In addition, the example shown in this figure is a case where 0 and 471 shown in FIGS. 90 and 38 are changed to 0 × 0711. Before the identification data record, the pattern A before the identification data record is shown in (A) of FIG. 41. After the 24-bit frame synchronization signal, the connection bit of [00〇] is inserted, followed by [00]. 1 00 1 00 1 00 1 00] (〇X47h), followed by the connection bit of [100]. The optical disc 1 is provided with a ridge L1 of 11T after a groove P1 of a length of 11 τ, followed by a groove P2 of 7T, followed by a ridge L2 of 3T, followed by a ridge L3 of 3T, followed by a ridge L3 of 3T, and 3 d. Ditch P4. The data recording device 40 irradiates a high-output light beam from the grooves P3 to P4, dissolves the reflective film for thermal recording, and virtually forms a groove connected to the groove P3 and the groove P4 at the position of the ridge L3, thereby forming FIG. 41. The recorded pattern A shown in (B). That is, a pattern of [00100100000000] (0X07h) is recorded in the subcode area of the pattern A after recording. Therefore, in the optical disc 301, a 11T ridge L11 is provided after the 11T ditch P11, a 7T ridge P12 ', a 3T ridge L12, and a 9T ridge P13. In the following description, when the pattern of the frame synchronization signal is opposite to the above example, as shown in (C) in FIG. 41, the pattern b before identification data recording is inserted with a connection of [0 0 1] after the frame synchronization signal of 24 bits. Bit, followed by the subcode of [00100100100100] (0X4 7h), and the invention description of [100], followed by 1244069 (85) connected bits. The optical disc 301 is provided with a ridge T21 of ΠT after a ridge L21 of a length of 11T, followed by a ridge of 4T L22 ', a ridge of 3T P22', a ridge L3 of 3T, a P23 of 3T, and a ridge of 3T L24, followed by 3T trench P24. The data recording device 40 forms a groove connected to the groove P23 and the groove P24 at the position of the ridge L24 by irradiating a high-output light beam from the groove P23 to the groove P24, and dissolving the reflective film for thermal recording. (D) Recorded pattern B shown. That is, a pattern of [00100100000000] (0X07h) is recorded in the subcode area of the pattern B after recording. Therefore, in the optical disc 301, a UT groove P31 is set after a ridge L31 of a length of 11T, followed by a ridge L32 of 4T, a groove P32 of 3T, a ridge L33 of 3T, and a groove P33 of 9T. In this way, the data recording device 340 forms a pattern including grooves and ridges corresponding to the identification data by turning on and off the high-output light beam, and records the identification data in the Q channel subcode. Using the above method, the address information in the subcode is designated as the identification information

Can be used to record identification information in the designated area. Next, a data reproduction device for reproducing data on the optical disc 1 on which the identification data is recorded by the data recording device 340 will be described with reference to FIG. This data recording device 3 6 0 is also equipped with the following Makoto M # and Month J escape shellfish reproduction devices 60, 1 60, 2: rotation recording knowledge ~ ~ Behr's first disc 3 〇i mandrel horse 361 ; Detect the optical pickup 362 of the light beam emitted from the optical disc 3 and reflect back, perform object alignment of the optical pickup 362, t-focus control and tracking control of the lens, and perform rotation of the spindle motor 36 1 ^ &amp; system & system 3 6 3; Generate RF signal from the output of light source 3 62 f RF amplification state 3 64; From RF signal -91-(86) 1244069 Data generated when detecting synchronization signal EF Μ modulation record demodulated data by 3 67 ° pulse synchronization signal detection and recording data demodulation; error correction processing error of this data reproduction device 3 60 summer supply, 胥, from RF signal extraction section 3 6 8; output the identification data 3 72 in the disc 1 of the other data reproduction mode of the sub-code of the EFM channel P to W. The 14-bit subcode demodulation subcode demodulation unit 3 6 9; the detection unit 3 7 0 that detects the display material; the switching unit 3 7 1; and the demodulation spindle motor 3 6 1 The decibel regeneration device encourages centering on the disc table to make Zhuangshui Women's Disc 3 0 1 and 301 ° ~ only Zhu Dansheng device | The lens records the signal from the semiconductor laser field to gather 3 0 1 On the surface, the signal that was reflected by the signal recording surface of Pingwei and was mistakenly reflected by the light &lt; beam first, said detection '', and output to the RF amplifier 264. At this time, half a moment: when it is born, the beam is emitted at the standard output. Opposite object: The temple's objective lens drive mechanism is supported at a position perpendicular to the focal direction of the object and perpendicular to the optical axis of the objective lens. The output signal amplifier 364 generates an RF signal, a focus error signal, and a description of the invention according to the self-constructed optical pickup 362, and continues the page description section 3 65, and the content release section 3 6 6; The sub-code of the mouth sub-code is drawn into 8 bits, and the identification in the sub-code is generated. The disc recording platform for recording the optical identification data is similarly changed. 1 The data converted into electrical signal lasers are tracked by a two-axis actuator with the optical axis parallel to the tracking error signal that drives the variable light detector. -92- 1244069 I ------------ (87) Description of the Invention Continued Page 1 --------- If the focus error signal is generated by the astigmatic aberration method, etc., The tracking error signal is generated by a three-beam method, a push-pull method, or the like. The RF amplifier 64 outputs the RF signal to the demodulation section 66 in order to obtain the FM modulated data, and outputs a focus error signal and a tracking error signal to the control section 3 63. The synchronization signal detecting section 3 65 detects the frame synchronization signal 'shown in Fig. 1 from the RF signal and detects the synchronization signal when the subcodes shown in Figs. 2 and 3 are decoded. The synchronization signal detection section 3 6 5 generates a clock from the synchronization signal. The control section 3 6 3 generates a focus servo signal and a tracking servo signal based on the focus error signal and the tracking error signal input from the RF amplifier 3 64, and outputs these signals to the objective lens driving mechanism of the optical pickup 3 6 2 On the drive circuit. As a result, the objective lens held in the objective lens driving mechanism is determined in accordance with the hydrofocus. § $ 虎 和 追縱 Error No. 'is in the focusing direction parallel to the optical axis of the objective lens and the light with the objective lens Drive displacement in the tracking direction where the axis is orthogonal. The clock generated from the synchronization signal of the control unit 3 6 3 is synchronized with the frequency and phase of the reference clock of the crystal oscillator to generate a rotation servo signal. Based on this, the spindle motor 3 6 1 rotates the optical disc 3 as C LV. 0 1. The demodulation section 3 66 demodulates recorded data such as content data in accordance with the decimal of the EFM. Specifically, the demodulation unit 366 converts a 14-bit recording code series into an 8-bit data bit according to the EFM conversion tables shown in Figs. 7 and 8. The error correction processing section 3 67 demodulates the demodulated recording data based on the decimal such as CIRC, and outputs the demodulated data to the output terminal 3 7 3. If the recorded data is audio data, the audio data output from output terminal 3 73 is converted from digital signals to analog signals by a 0 / A converter, and output from speakers, headphones, and headphones. 1244069 (88) Description of the invention Continuation page subcode extraction unit 3 6 8 Data input from RF amplifier 3 6 4 3, sub-code of 1 4-bit set after Ύ 田田 出 ΎSynchronization signal, and output to T-code demodulation section 3 6 9. The sub-code demodulation section 3 6 9 converts the 14-year-old 7-11 11-year-old tributary materials into 8-bit data according to the E F M conversion table. The sub-code demodulation section 3 69 constructs 1 block with 9 8 frames and generates sub-codes of P, Q, R, S, T, U, V, and W channels. That is, the subcode demodulation section 369 generates P1 to W1 to P96 to W96, that is, generates a 96-bit subcode. The detection section 3 70 detects a touch-type of the record identification data. That is, the detection unit 37 specifies a region in which the identification data is recorded by detecting whether or not the A D R of the Q channel is a reproduction identification data. When the detection section 37 detects the identification data showing the mode of the reproduction identification data, the switching section 3 7 i is activated, and the identification data input from the subcode extraction section 3 6 8 is output to the demodulation section 3 72. When the detection section 3 7 0 cannot detect the identification data showing the mode of the reproduction identification data, it indicates that it is not the recording area of the identification data, and closes the switching section 3 7 1 to prevent the identification data input from the subcode extraction section 3 6 8 from being output To the demodulation section 3 7 2. In addition, the 'detection section 3 70 can also detect the R ~ w channel of the subcode to detect whether it is a fixed value stored in the memory to specify the area where the identification data is recorded. That is, the detection unit 37 detects whether the R ~ w channel is

Is [000000], is the R ~ w channel at [000 1 00] in Fig. 9C, and the R ~ w channel is at [000111] in Fig. 9D. When the data of the R ~ W channel input from the sub-code demodulation unit 3 69 is a fixed value, the detection unit 3 70 can output the identification data input from the sub-code extraction unit 3 6 8 to the demodulation. When the data of the R ~ w channel input from the sub-code demodulation section 3 5 9 is not a fixed value, it means that it is not the recording area of the identification data, and it is • 94 · 1244069 _ (89 ) I Description of the invention Continuation page closed switching section 3 71 does not output the identification data input from the subcode extraction section 3 6 8 to the demodulation section 3 7 2. The identification data demodulation section 3 7 2 inputs the sub code of the Q channel from the sub code demodulation section 3 6 9 via the switching section 3 7 1. The identification data demodulation section 3 7 2 refers to the recording completion time and the like recorded in the UDI index shown in FIG. 4 to demodulate the identification data recorded in the UDI payload, and then uses the CRC to perform error correction processing and outputs to the output terminal 374.

Next, the data reading operation of the data reproduction device 360 described above will be described. When the user presses the reproduction button, the data reproduction device 3 60 drives the spindle motor 3 6 1 and rotates the optical disc 3 1 mounted on the optical disc table constituting the optical disc mounting portion at a constant linear speed. And the optical pickup 3 6 2 irradiates the light beam on the optical disc 1. At this time, the semiconductor laser emits a light beam with a standard output. The reading of the data is started with the optical pickup 3 62 controlled by the control unit 3 6 3 to focus and tracking control.

As shown in FIG. 43, the data reproduction device 360 enters the recording area of the identification data in step S311, extracts the subcode by the subcode extraction portion 3 68, and demodulates by the subcode demodulation portion 369. In step S 3 12, the detection section 3 70 reads the Q channel of the subcode, and determines whether at least all the recordable areas shown in FIG. 4 are [1]. This is because the disc 3 0 1 on which identification data is not recorded does not dissolve the reflective film to form a virtual groove due to the recording identification data, so at least all of the recordable area of the Q channel is [1]. Of course, when all the frames of the Q channel are recordable areas, it is only necessary to determine whether the subcodes of the Q channel are all [1]. When the data recording device 3 6 0 has all the recordable areas of the Q channel being [1], the process proceeds to step S 3 1 3, and if no, the process proceeds to step S 3 1 4. -95- 1244069 _ (90) Description of the invention continued

When the data recording device 3 6 0 has all the recordable areas of the Q channel [1], the switching section 3 7 1 is turned off in step S 3 1 3 to prevent the reading of identification data and the content recorded on the optical disc 3 0 1 Reproduction of materials, etc. The Q-channel recordable areas are all [1] discs 301, which are discs that have not yet recorded identification data, and are identified as incorrect before the identification data is recorded.

When the recordable area of the Q channel is not all [1] in the data reproduction device 3 60, in step S 3 1 4, when the detection section 3 70 detects the ADR of the Q channel as the recording area of the identification data, a read is formed. Take the reproduction mode of the identification data. Next, in step S315, the data reproduction device 360 reads the identification data and demodulates it, and secondly, if the reproduction processing of the content data recorded in the optical disc 301 is allowed. With the above method, by judging whether the recordable areas of the Q channel are all [1], it is possible to restrict the reproduction of discs declared as incorrect before recording the identification data. With this method, it is possible to restrict the reproduction of incorrect discs made by using the embossed groove pattern of the disc substrate by peeling off the protective film and reflective film of the 301 disc, and transferring the groove pattern of the disc substrate. Since the identification data is recorded by forming a groove virtually by dissolving the reflective film, it is not a concave-convex pattern, so it is not transferred to the replica. This data reproduction device 3 60 can also control the reproduction of data as follows. As shown in FIG. 4, in step S 3 21, when the data reproduction device 36 uses the detection section 3 70 to detect the ADR of the Q channel as the recording area of the identification data, a reproduction mode for reading the identification data is formed. In step S 3 2 2, the data reproduction device 3 600 extracts the R ~ W channels of the subcodes by the detection unit 37, and determines whether the subcodes of the R ~ W channels read from the optical disc 3 01 are specific and fixed. value. As shown in Figure 9 (D) -96- (91) 1244069 Description of the Invention When the combination of 0 × 4 7 h and 0 × 0 7 h on the following page is used, the detection unit 3 7 0 determines whether the subcode of the R ~ W channel is [ 〇〇〇1 1 1]. The data reproduction device 3 600 determines that the detection portion 3 7 0 is a fixed value, that is, when the subcode of the R ~ W channel is [000111], it proceeds to step S 3 2 3 to determine a non-fixed value, that is, R to W. When the sub-code of the channel is not [0 0 0 1 1 1], the process proceeds to step S 3 2 4. When the data reproduction device 3 6 0 determines that the sub code of the R ~ W channel is a fixed value at the detection unit 3 7 0, in step S 3 23, if the currently installed optical disc 301 is a correct disc, the switching unit 3 7 1 is activated. Can read identification data. When the subcode demodulation unit 3 69 inputs the subcode of the Q channel via the switching unit 37 丨, the identification data demodulation unit 3 7 2 refers to the recording completion time and the like recorded in U DI inde X shown in FIG. 4 and records it in The identification information in U DI pay 1 〇ad is demodulated, and Dan uses CRC for error correction processing and outputs it to output terminal 74. The data reproduction device 360 starts the reproduction processing of the content data recorded on the optical disc 1. When the data reproduction device 3 600 determines that the sub code of the R ~ W channel does not agree with the fixed value at the detection unit 3 70, in step S324, if the currently installed optical disc is not the correct optical disc or a disc of a different type, the switching is turned off. It is forbidden to read the identification data, such as prohibiting the subsequent processing such as the reproduction processing of the content data recorded on the optical disc 300. This method can be used to restrict reproduction of discs that are declared to be incorrect and discs of different types. Once the + encoding foot EFM + reversal Therefore, as described in β above, when the identification data is recorded in FIG. 1 using the optical disc 3 of the present invention, as shown in FIG. 36 to FIG. 38, the full conversion rule is selected That is, the condition that the maximum inversion interval D_ is 10 and the maximum interval T mi η is 2 is satisfied, and the specific bit is always a ridge. -97. 1244069 _ (92) Description of the invention continued

The disc 3 0 1 can always record the identification data by turning a specific ridge into a groove. When the identification data is recorded, since the recording position of the identification data has been determined, it is simple to control and only needs to switch the output periodically. This identification data is not recorded by grooves and ridges including a concave-convex pattern, and the reflection film is not dissolved and the light beam is reflected. Therefore, instead of using the protective film and reflective film of the disc 3 01 to peel off and transfer the groove pattern of the disc substrate to transfer the identification data on the incorrect disc, the identification information can be transferred. Reproduction of such manufactured optical discs.

The above are examples of the optical disc to which the present invention is applied, a data recording device for recording identification data on the optical disc, and a reproduction device for reproducing the data recorded on the optical disc, but the present invention is not limited to this. As in the above example, the data is recorded by EFM modulation. However, the modulation method is other than '8-16 modulation, 8-10 modulation, etc., which converts M-bit blocks to N. The modulation method of the (M &lt; N) bits is not particularly limited. The channel for recording identification data may be other than the Q channel, and the fixed value is not limited to the subcode of the R ~ W channel. Furthermore, the above example in the 8-bit series is used to describe the conversion of [1] of the Q channel to [0], but the present invention can also be used to convert [0] to [1]. The above examples are described by taking the groove pattern formed on the optical disc substrate, and adding identification data on a reproduction-only disc for recording content data as an example. However, the optical disc to which the present invention is applied can also be used on a filling type and a rewriting type optical disc. Record the content data in advance, and further dissolve the reflective film to record the identification data. In addition, it is obvious to the practitioner that the present invention is not limited to the above-mentioned embodiments, as long as it does not deviate from the scope of the attached patent application and its gist, • 98-1244069 Description of Invention Continued (93) Various changes, amendments, and replacements Or its equivalent. Industrial feasibility

In the present invention, when further recording data on a recording medium in which data of M bit data is modulated into N (M &lt; N) bit data in advance, it is to change some bits of the N bit data, While the remaining bits of the fixed N-bit data are recorded in a way that further recorded data can be recorded in the area that maintains interchangeability with the existing format and has recorded data, such as identifying content data and other master data data. Therefore, master data such as content data recorded in each recording medium can be reliably protected. Schematic representation of symbols

1, 101, 201, 301 Optical disc 11 Photoresist coating 12 Cutting step 14 Metal master making step 15 Reprint mold making step 17 Reflective film forming step 18 Protective film coating step 19 Identification data recording step 2 1 Cutting device 22 A / D Conversion 丨 i 22a 1 Input terminal 23,323 Error correction coding circuit 24, 324 Modulation circuit 25, 325 Subcode generator-99-1244069 Description of the invention Continued on page /, ΐ 7 η -fT 'Bei — 邛 bucket generator // ^ ^ J ζ / Laser source 28, J 2 8 Modulation 29, 329 Mirror 30, 330 Moving mechanism 3 1, 33 1 Object lens 32 Motor 33, 333 Object lens drive mechanism 34, 334 Discrimination unit 35 , 335 glass master 40, 140, 240, 340 data recording device 41, 61, 161, 261, 332, 34 1 spindle motor 42, 62, 162, 262, 342 optical pickup 43, 63, 163, 263 Control section 44, 6 4, 164, 264, 344 RF amplifier 45, 48, 65, 68, 70, 1 65 Detection section 170, 270, 345, 347, 3 7 0 46, 168 '268, 346 Zishi Ma extraction section 47, 6 6, 72, 16 6, 1 69, 266 Demodulation section 49, 7 1, 17 1, 2 5 2, 273 1 349 Switching section 50, 25 1, 3 50 Modulation section 5 1, 2 5 3, 35 1 1 Record processing unit 52, 153, • 254, 3 52 Output control unit 53, 256 Input terminal 1244069 (95) Description of the invention continued on 60, 160, 260 Data reproduction device 67, 167 Error Correction processing section 69, 269, 3 4 8, 369 Zishi Ma demodulation section 73, 173, 2 5 5, 275 output terminals 12 1, 22 1, 32 1 cutting device 149 identification data modulation section 234 connection bit control section 250, 272 connected bit detection section 328 light modulator 343 servo control section

Claims (1)

1244069 Patent Application No. 091125028 94 Claim for a replacement patent scope (May 1994) Pick up and apply for patent scope 1. A recording method in which the M-bit data is modulated to N (M &lt; In the recording medium of the data of the N bit data, the data is further recorded in such a way that certain bits of the above N bit data are changed, and the remaining bits of the above N bit data are fixed. 2. The recording method according to item 1 of the scope of patent application, wherein the N-bit data is recorded in the recording medium in advance as a concave-convex pattern including a ridge portion between the groove portion and the groove portion. 3. The recording method of item 2 of the patent application range, wherein the above method further records the data by making the ridge portion of the N bit data into a groove portion. 4. The recording method according to item 3 of the scope of patent application, wherein the above method records the identification data by changing certain bits of the above N-bit data. 5. The recording method according to item 4 of the scope of patent application, wherein the identification information includes data for specifying the area in which the identification information is recorded. 6. If the recording method of item 4 of the scope of patent application, the main data and subcode data including the content are modulated into the above-mentioned N-bit data and recorded in the above-mentioned recording medium, and some of the above bits are related to the above-mentioned sub-bits. The bit of code data. 7. If the recording method of item 6 of the scope of patent application, the above-mentioned N-bit data recorded in the above-mentioned recording medium is the data in which the above-mentioned M-bit data is modulated by 8-14. 8. For the recording method of item 1 of the scope of patent application, wherein the data of the above-mentioned N bit includes the connection bit. 80385-940520.doc 12440 lock 9. According to the recording method of the eighth patent application, the above-mentioned N-bit data is recorded in advance as a concave-convex pattern of the ridge between grooves, the above-mentioned orientation element is changed, and the above-mentioned connection bit is recorded Zone selection. 10. If the recording method in item 9 of the scope of patent application is applied, change the ridge of the above N-bit data; record the data. 11. For the recording method of item 10 in the scope of patent application, the above-mentioned N-bit data in the recording medium, the data over 8 — 14 modulation. 12. If the method of recording item 11 in the scope of patent application is based on the result of changing some of the above bits, either party becomes the other party. 13. If the method of recording item 11 in the scope of patent application is based on the result of changing some of the above bits, either party becomes the other party. 14. If the method for recording item 11 of the scope of patent application is changed by some of the bits mentioned above, either party becomes the other party. 15. If the recording method of item 8 of the scope of patent application, the above-mentioned N-bit data is recorded in advance as a concave-convex pattern of the ridge between grooves, and the above-mentioned N-bit rice materials with certain bits changed The above connection between subsequent N-bit data is 80385-940520.doc The recording medium includes a groove portion and the above-mentioned legal system in such a manner that some of the domains become ridges. The above method is based on the technique groove portion, and further recorded, which is recorded in the g of the M-bit data history, where the N-bit Yuan from 0X47h, 0X07h, among the above N bits from 0X44h, 0X04h, among the above N bits from 0X40h, OXOOh, where the above recording medium includes a groove portion and the above-mentioned legal system to be located above the +, and The above-mentioned N-bit asset connection bit changes from the ridge to 1244069 The groove, or the way from the groove to the ridge. 16. The recording method of item 15 in the scope of patent application, wherein the above method further records the data by making the ridge portion of the N-bit data into a groove portion. 17. The recording method of item 16 in the scope of the patent application, in which the above-mentioned N-bit data recorded in the above-mentioned recording medium is the data of the above-mentioned M-bit data that has been modulated by 8-14. 18. For the recording method of item 17 in the scope of patent application, wherein the above method selects a pattern other than [000] as the connection bit. 19. The recording method of item 17 in the scope of patent application, wherein the above method selects a pattern of [100] as the connection bit. 20. For example, the recording method of the first patent application range, wherein the above method is to determine whether the remaining data portion of the N bit is a fixed value, and to determine that the remaining pattern of the N bit is the fixed value, it is to make the These bits of data are recorded in a changed manner. 21. If the recording method of the scope of application for the patent No. 20, wherein the above method determines that the remaining data portion of the N bit is not the above-mentioned fixed value, no recording operation is performed. 22. For the recording method of item 20 in the scope of patent application, wherein when the above method determines that the remaining patterns of the N bits are the fixed values, the data of some of the bits is changed to record the identification data. 23. If the recording method of the 22nd scope of the patent application, the main data and subcode data including the content are modulated into the above-mentioned N-bit data and recorded in the above-mentioned recording medium, and some of the above bits are related to the above-mentioned sub-bit The bit of code data. 80385-940520.doc I.4 · 9 24. For example, the method for recording item 22 of the scope of patent application, wherein the above method determines whether some of the above bits are specific values, and records the above identification data when some of the bits are specific values. 25. A recording device comprising: an optical head that scans a recording medium, and the recording medium has previously recorded data that modulates M bit data into N (M &lt; Ν) bit data as a groove and The concave-convex pattern of the ridge portion between the groove portions; the control portion that controls whether to record the identification data based on the data read from the optical head; and the signal processing portion that performs the signal processing for recording in the identification signal and supplies it Output data to the above-mentioned optical head; by using the above-mentioned optical head in the above-mentioned recording medium, to record certain bits of the above-mentioned N-bit data, and to fix the remaining bits of the above-mentioned N-bit data in a fixed manner The above identification information. 26. For example, the recording device of the scope of application for a patent No. 25, wherein the device records the identification information by using the optical head to change the ridge portion of the N-bit data into a groove portion. 27. For the recording device according to item 25 of the scope of patent application, the above identification information includes data for designating an area where the above identification information is recorded. 28. If the recording device of the 25th item of the scope of patent application, the main data and subcode data including the content are modulated into the above-mentioned N-bit data and recorded in the above-mentioned recording medium, some of the above-mentioned bits are related to the above-mentioned Bit of subcode data. 29. If the recording device of the 28th item of the scope of patent application, the above-mentioned N-bit data recorded in the above-mentioned recording medium is the above-mentioned M-bit data. 80385-940520.doc -4- 1244069 passed 8 — 1 4 Tuned information. 30. If the recording device of the scope of application for item 25, it is expected that the recording device includes a connection bit. 31. For the recording device of the 30th aspect of the patent application, the management department selects such a way that the above-mentioned connection bit becomes the above-mentioned area as a ridge. 32. The recording device such as the 28th item in the scope of patent application uses the optical head to record the above identification information by using the above-mentioned optical head to make the N-bit data 3 grooves. 33. If the recording device of item 32 of the scope of patent application applies to the above-mentioned N-bit data in the recording medium, it is 8- to 14-modulated data. 34. For a recording device in the 33rd area of the patent application, the result of changing some of the above-mentioned bits of data is that any one of I becomes the other. 35. For a recording device in the scope of application for item 33, the result of changing some of the bits mentioned above will change from one party to the other. 36. In the case of a recording device in the scope of application for item 33 of the patent, the result of changing some of the bits mentioned above will change from one party to the other. 37. For example, the recording device management section of the 30th patent application scope is to be located at the N position that follows some of the above bit data and the above N bit data; the connecting bit changes from the ridge to the groove, or from the groove Name80385-940520.doc Among the above-mentioned N-bit data, the above-mentioned signal is recorded at some bits, where the device is the ridge of the device, and the above-mentioned M-bit data is recorded through I 0X47h, 0X07h of the above-mentioned N-bit. Among the above-mentioned N bits, 0X44h, 0X04h- ^ Among the above-mentioned N bits, I 0X40h, OXOOh, where the above-mentioned P between the above-mentioned N-bit data changed at the above signal becomes a ridge 1244069 for selection. 38. The recording device according to item 37 of the scope of patent application, wherein the device records the identification data by changing the ridge portion of the N-bit data into a groove portion through the optical head. 39. For the recording device of the 38th scope of the patent application, the above-mentioned N-bit data recorded in the above-mentioned recording medium is the data of the above-mentioned M-bit data modulated by 8-14. 40. For the recording device of item 39 in the scope of patent application, wherein the signal processing section selects a pattern other than [0 0 0] as the connection bit. 41. For the recording device of item 39 in the scope of patent application, wherein the signal processing section selects a pattern of [100] as the connection bit. 42. If the recording device of the 25th item of the patent application is applied, the control unit determines whether the remaining data portion of the N bit is a fixed value, and determines that the remaining pattern of the N bit is the fixed value, so that Some of the above bits of data are recorded in a changed manner. 43. For the recording device in the 42nd area of the patent application, the control unit includes: a determination unit that determines whether the remaining data portion of the N-bit is a fixed value; and a switching circuit unit that is based on The determination result is switched. When the switching circuit unit determines that the remaining patterns of the N bits are the fixed value, it switches to input the identification data into the signal processing unit. 44. If the recording device according to item 42 of the patent application, wherein the control unit determines that the remaining data portion of the N bit is not the above-mentioned fixed value, the recording operation is not performed. 45. For example, the recording device in the 42nd area of the patent application, in which the above-mentioned control section 80385-940520.doc -6--·, &quot; ， · .-Ϋ́ΐ 1 When the remaining patterns of the above N bits are determined to be the above-mentioned fixed values, the data of some of the above bits is changed to record the identification data. 46. For example, the recording device of the 45th scope of the patent application, wherein the main data and subcode data including the content are modulated into the above-mentioned N-bit data and recorded in the above-mentioned recording medium. Bit of subcode data. 47. For the recording device of the scope of application for patent No. 45, the control unit judges whether some of the bits are specific values, and records the identification data when the certain bits are specific values. 48. For the recording device according to item 25 of the scope of patent application, wherein the control unit includes a detection unit that detects whether the recording position of the identification data of the recording medium is a ridge, and the detection position is detected by the detection unit When the spine is attached, the identification data is recorded in the recording medium. 49. A reproduction method comprising pre-recording data obtained by modulating M bit data into N (M &lt; N) bit data so that certain bits of the above N bit data are changed so that the above N Some other bits of the bit data are fixed in a way that further records the poor recording medium to read the data. 'Extract the remaining part of the above N bit data from the read data, and judge the extracted N bit data. Whether the remaining part is a fixed value, and it is judged that the rest of the extracted N-bit data is a fixed value when it is determined to be correct. 50. For the reproduction method according to item 49 of the application, wherein the above-mentioned recording medium is 80385-940520.doc 1244069 In vivo, records are identified by changing certain bits of the N-bit data described above. 51. If the reproduction method of item 50 of the scope of patent application is applied, the main data and subcode data including the content are modulated into the above-mentioned N-bit data and recorded in the above-mentioned recording medium. Bit of subcode data. 52. In the case of a reproduction method according to item 51 of the scope of patent application, the N-bit data recorded in the above-mentioned recording medium is the data of the M-bit data that has been modulated by 8-14. 53. If the reproduction method of the 49th scope of the patent application is applied, the above method is to compare the rest of the extracted N-bit data with the fixed value, and determine whether the rest of the extracted N-bit data is the same as the above. The fixed values are consistent. 54. A regeneration method, which is obtained by pre-recording data obtained by modulating M bit data into N (M &lt; N) bit data, so that some bits of the above N bit data are changed, so that The other bits of the N-bit data are fixed in a way that further records the data. The reading medium reads the data, extracts the remaining part of the N-bit data from the read data, and judges the extracted N-bit data. Whether the remaining part is a fixed value, and when it is judged that the remaining part of the extracted N-bit data is a fixed value, the further recorded data described above is reproduced. 55. The regeneration method as described in item 54 of the patent application range, wherein the above method is 80385-940520.doc Timm The rest of the extracted N-bit data is compared with the fixed value to determine whether the rest of the extracted N-bit data is consistent with the fixed value. 56. If the reproduction method of item 54 of the patent application scope, wherein the above method determines that the rest of the extracted N-bit data is not a fixed value, the reproduction of the above recording medium is prohibited. 57. If the regeneration method of the 54th item of the patent application is applied, in which the above method determines that the rest of the N-bit data extracted above is not a fixed value, it proceeds to the next N-bit data. 58. The reproduction method according to item 54 of the scope of patent application, in which the identification information is recorded in the recording medium by changing some bits of the above-mentioned N-bit data. 59. For example, the reproduction method of item 58 in the scope of patent application, wherein the main data and subcode data including the content are modulated into the above-mentioned N-bit data and recorded in the above-mentioned recording medium, and some of the above-mentioned bits are related to the above-mentioned Bit of subcode data. 60. If the reproduction method of item 59 in the scope of the patent application is applied, the N-bit data recorded in the above-mentioned recording medium is data in which the M-bit data has been modulated by 8-14. 61. A reproduction method, which is obtained by pre-recording data obtained by modulating M bit data into N (M &lt; N) bit data, so that certain bits of the above N bit data are changed, so that The other bits of the N-bit data are fixed in a way that further records the data to read the data from the recording medium, and detects whether some of the above-mentioned bits of the N-bit data read are specific values, 80385-940520.doc 1244069 When some of the above bits are not the above specific values, the data recorded further above is reproduced. 62. The reproduction method according to item 61 of the patent application range, wherein the above method prohibits the reproduction of the further recorded data when some of the bits are the above-mentioned specific values. 63. The reproduction method according to item 61 of the patent application range, wherein the above method prohibits the reproduction of the recording medium when some of the bits are the specific values described above. 64. The reproduction method according to item 61 of the scope of patent application, wherein the identification data is recorded in the recording medium by changing some bits of the N-bit data. 65_ If the reproduction method of item 64 of the patent application scope, wherein the main data and subcode data including the content are modulated into the above-mentioned N-bit data and recorded in the above-mentioned recording medium, some of the above-mentioned bits are related to the above-mentioned sub-bits. The bit of code data. 66. As for the reproduction method of item 65 in the scope of application for patent, the above-mentioned N-bit data recorded in the above-mentioned recording medium is the above-mentioned M-bit data which has been modulated by 8-14. 67. A reproduction device comprising: an optical head, which is obtained by pre-recording data that modulates M-bit data into N (M &lt; NR) bit data so that one of the above N-bit data These bits change, so that some other bits of the above N-bit data are fixed to further record the data in a recording medium to read the data; the demodulation section, which demodulates the data read by the optical head; And 80385-940520.doc -10- 1244069 The control unit is configured to extract the rest of the N-bit data from the data read from the recording medium by the optical head, and determine whether the rest of the extracted N-bit data is a fixed value. When the rest of the extracted N-bit data is a fixed value, the further recorded data is supplied to the demodulation section. 68. If the reproduction device of the scope of application for patent 67, wherein the control section includes a holding section for holding the fixed value, the control section fixes the rest of the extracted N-bit data with the holding of the holding section. Value comparison to determine whether the rest of the extracted N-bit data is consistent with the fixed value. 69. If the reproduction device of the scope of application for a patent item 67, wherein the control section determines that the rest of the extracted N-bit data is not a fixed value, reproduction of the recording medium is prohibited. 70. In the case of a reproduction device applying for item 67 of the patent scope, in which the above control unit judges that the rest of the extracted N-bit data is not a fixed value, it proceeds to the next N-bit data. 71. The reproduction device according to item 67 of the application, wherein in the above-mentioned recording medium, identification data is recorded by changing some bits of the above-mentioned N-bit data. 72. If the reproduction device of item 71 of the scope of patent application is applied, the main data and subcode data including the content are modulated into the above-mentioned N-bit data and recorded in the above-mentioned recording medium, and some of the above-mentioned bits are related to the above-mentioned Bit of subcode data. 73. In the case of the reproduction device for item 72 of the patent application, the above-mentioned N-bit data recorded in the above-mentioned recording medium is the above-mentioned M-bit data which has been subjected to 80385-940520.doc -11-1244069 Over 8 — 1 4 modulation data. 74. A recording medium, which is pre-recorded with data modulated from M bit data to N (M &lt; N) bit data, so that certain bits of the above N bit data are changed to make the above N Some other bits of bit data are fixed in a way that further records the data. 75. For example, the recording medium of the scope of application for patent No. 74, in which the above-mentioned N-bit data is recorded in advance as an uneven pattern including a ridge portion between the groove portion and the groove portion. 76. For example, the recording medium in the scope of application No. 75, in which the above-mentioned media further records the data by making the ridge portion of the N-bit data into a groove portion. 77. For example, the recording medium in the scope of patent application No. 76, in which the above-mentioned media changes the record identification information by changing certain bits of the above N-bit data. 78. In the case of a recording medium under the scope of patent application No. 77, the above-mentioned identification information includes information for specifying an area in which the above identification information is recorded. 79. If the recording medium in the scope of patent application No. 77, the main data and subcode data containing the content are modulated into the above-mentioned N-bit data and recorded in the above-mentioned recording medium. The bit of code data. 80. If the recording medium of the 79th scope of the patent application, the above-mentioned N-bit data is the data of the above-mentioned M-bit data after 8-14 modulation. 81. If the recording medium of the scope of patent application No. 74, wherein the information of the above N bit includes the connection bit. 82. If you apply for the recording medium of item 81 in the scope of patent application, 80385-940520.doc -12- u The N-bit data is recorded in advance as a concave-convex pattern including a ridge portion between a groove portion and the groove portion, and a certain ridge is changed to record a region connecting the bits as a ridge. 83. For the recording medium under the scope of application for patent No. 82, in which the data is further recorded by changing the ridge portion of the N-bit data into the groove portion. 84. For the recording medium under the scope of patent application No. 83, in which the above-mentioned N-bit data is the data modulated by the above-mentioned M-bit data with 8-14. 85. As for the recording medium under the scope of application for patent No. 84, the result of the above-mentioned N bit data changing some of the above bits is that one of 0X47h and 0X07h becomes the other party. 86. As for the recording medium under the scope of application for patent No. 84, the result of the above N bits of data changing some of the above bits will be from 0x44h, 0x04h to the other party. 87. As for the recording medium in the scope of application for the item No. 84, in which the data of the above N bits change some of the above bits, it is from OX40h or OXOOh to either party. 88. For example, the recording medium of item 81 of the scope of patent application, in which the above-mentioned N-bit data is recorded in advance in the above-mentioned medium as a concave-convex pattern including a ridge portion between the groove portion and the groove portion, so as to locate the bit The changed N-bit data and the N-bit data following the N-bit data described above are connected from the ridge portion to the groove portion or from the groove portion to the ridge portion. 89. For example, the recording medium of item 88 of the scope of patent application, wherein the above-mentioned medium is further recorded by making the ridge portion of the N-bit data into the groove portion 80385-940520.doc -13- 1244069 ο \ ι &gt;. i record data. 90. The recording medium according to item 89 of the scope of patent application, wherein the data of the N bit is the data of the M bit data which has been modulated by 8-14. 91. The recording medium according to item 90 of the scope of patent application, wherein the above-mentioned connection bits are patterns other than [0 0 0]. 92. The recording medium of claim 90 in the scope of patent application, wherein the above-mentioned connection bit is a pattern of [100]. 80385-940520.doc -14-