TW546640B - Compact disk recording device, compact disk recording method, and compact disk - Google Patents

Abstract

The present invention relates to a compact disk recording device, a compact disk recording method, and the compact disk, which, for example, can be applied to the making device of the compact laser disk, the compact laser disk, the compact disk tray. There is no any influence about main data regeneration formed by pit rows. With the pick-up head for regenerating the main data row for regeneration, it can make difficulties for recording the sub-data row with illegal means. The solution of the present invention is to vary the reflective film, such as the pit mark, and partially record the data row ED without influencing the time of positional information at edges.

Description

546640 A7 _ B7 V. Description of the Invention (1) [Technical Field] The present invention relates to an optical disc recording device, an optical disc recording method, and an optical disc; for example, it can be applied to a small optical disc creation device, a small laser disc, and a small disc. Turntable. The invention is directed to a disc in which information is recorded by pits in advance, and the reflective film is partially changed, and the reproduction of the main data row formed by the pit row and the like is not affected at all, and the optical pickup for regenerating this data row is used. The head can be reproduced, and it is difficult for illegal copying, so that it can record the secondary data rows. [Advanced Technology] In the past, small laser discs provided data records for data processing, and were subjected to EF M modulation (Eight to Fourteen Modulation). For a predetermined basic period T, a period of 3 T to 1 1 T was formed. Pit column; therefore it is allowed to record audio data. With this method, the lead-in area on the inner periphery side forms a recording area for management data; a TOC (Table Of Contents) recorded in this recording area can selectively reproduce a designated performance. The small laser disc that records all kinds of data in this way is engraved with the code indicating the manufacturer and the disc serial number on the inner peripheral side of the lead-in area. Therefore, the resume of the small laser disc can be confirmed visually. [Problems to be Solved by the Invention] However, since such a marking can confirm the resume of a small laser disc, it is considered that the presence or absence of this marking can be used to identify an illegal copy. This paper size applies to China National Standard (CNS) A4 (210 X 297 mm) (Please read the precautions on the back before filling this page)

π Equipment -------- Order --------- Line I Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economy -4-546640 A7 B7 V. Description of the Invention (2) But its purpose is printed at this moment In order to confirm visually, it is difficult to reproduce with the optical pickup of a compact disc player. Therefore, if an improper duplication is identified by the marking, as a result, a dedicated reproduction mechanism must be set up in order to reproduce the marking. In addition, the codes recorded in this way are recorded by the same method as ordinary pits. Therefore, the protective film and the aluminum reflective film of the small disc can be copied after being stamped after being stamped. Therefore, there is a problem of illegal copying. For these reasons, it is considered that the reproduction of the audio data formed by the pit rows is not affected in any way. It is possible to use the optical pickup of the reproduced audio data to reproduce, and it is difficult to make copies by illegal copying. If the secondary information can be recorded, use This second information can exclude illegal copying. In view of the above-mentioned problems, the present invention does not affect the data formed by the regeneration pit row in any way. The pickup head for regenerating the data formed by the pit row can be reproduced, and duplication by illegal copying can cause difficulties. An optical disc recording device, an optical disc recording method, and an optical disc made of the auxiliary data are recorded. [Means for solving the problem] In order to solve the above-mentioned problems, the present invention is directed to an optical disc recording device and an optical disc recording method. The pit (ph) is returned to the information recording surface. The change information records the reflectance of the surface, and records the secondary data rows. The other is in the optical disc, which records sub-data in response to changes in the reflectivity of the information recording surface of a pit (Pit) or a hole (Land). This paper size applies to China National Standard (CNS) A4 (210 X 297 mm) (Please read the precautions on the back before filling this page)

-Installation -------- Order --------- line I Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs -5- 546640 A7 B7 V. Description of the invention (3) The secondary data recorded on a disc-shaped recording medium in which information is recorded in a convexo-concave state such as a pit is changed, and it is difficult to reproduce it by peeling off the reflective film to make a master. If you have difficulty, you can record the side information column. Furthermore, as long as the auxiliary data recorded in this method is reduced, the amount of change in the reflectance occurring in the set auxiliary data can be used to reproduce the main data. Furthermore, the auxiliary data recorded by the change in the reflectance can be detected and decoded by the optical pickup using the change in the reproduction signal. Furthermore, in the present invention, a plurality of pits and lands can be continued to record one bit of auxiliary data. In addition, it can locally change the reflectance of the information recording surface at a distance determined by the edge isolation. When this method constitutes the present invention, the time at the edge is not affected in any way, and the reflectance can be made larger locally. As a result, the secondary data row recorded by a larger reflectance change can reproduce the secondary data row with higher stability. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs is therefore on the optical disc. The pit formed by the length of the main data row is returned to the information recording surface to record the aforementioned main data row; the aforementioned pit uses the physical properties of the aforementioned information recording surface Shape changes are recorded. The reflectance change of the aforementioned information record can effectively exclude duplication when recording the secondary data rows. [Embodiment] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 public love) -6-546640 Α7 Β7 V. Description of the invention (4) (the first embodiment) (1-1) The structure of the first embodiment Fig. 2 is a time pattern showing the format of the small-sized laser disc and the sectional structure of the small-sized disc record in this embodiment. The compact disc 1 is formed into a disc substrate 2 by injection molding of polycarbonate or the like used in a master mold in the same manner as a general compact disc. Here, the disc substrate 2 is formed by this injection molding, and a fine uneven shape corresponding to pits and holes is formed on the information recording surface side. Furthermore, the small-sized laser disc 1 is partially enlarged and indicated as indicated by the arrow a (Fig. 2E). For example, by steaming, a reflection record of the reflected laser beam is formed on the information recording surface side of the disc substrate 2. Surface 3, and a protective film 4 is formed to protect the reflective recording surface 3. Therefore, the small-sized laser disc 1 can record audio signals and the like using the return of pits and holes in the same way as a normal small-sized laser disc; in addition, the laser beam L is irradiated to the reflective recording surface through the disc substrate 2, Receiving its return light, it is possible to reproduce audio signals etc. recorded in this way. Printed here by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs, and returning to the pits and holes formed in this way, the same as ordinary small laser discs, 7 5 CD message boxes are allocated every 1 second (2A Figure), each CD message box is assigned 98 EF message boxes (Figure 2B). Then each EFM message frame is divided into 588 channel clocks; the first 22 channel clocks are allocated to the receiver end of the message frame. The pits and holes are based on the 1 cycle of the 1-channel clock as the basic cycle, and are returned at integer multiples of the basic cycle. The receivers of the message boxes are made with the cycle 1 1T. ·

Furthermore, in this embodiment, the reflective recording surface 3 is the same as the CD-R paper size applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 mm) 546640 A7 B7 5. The information recording surface of the invention description (5) Made of membrane structure. Therefore, the small-sized laser disc 1 is configured to irradiate the laser beam L with a predetermined light quantity or more reversibly to change the reflectance of the reflective recording surface 3 at the laser beam irradiation position; in addition, the light quantity of the returned light is detected to detect the change. Changes in reflectivity. Fig. 1 is a block diagram showing a processing device for this small laser disc. The small laser disc 1 is loaded with this processing device 10 after recording the disc identification number. That is to say, the processing device 10 and the spindle motor 11 are controlled by a servo circuit 12 to drive a small laser disc in a rotary motion at a constant line speed. The optical pickup head 1 3 irradiates the laser beam to the small-sized laser disc 1 and receives the return light, and outputs a reproduction signal R F that changes the signal level according to the return light. At this time, the optical pickup head 1 3 is controlled by an APC (Automatic Power Control) circuit 14 to increase the light amount of the laser beam at a predetermined time, so it is locally changed to reflect the recording surface of the small laser disc 1 3 reflectance. Printed by the Consumers' Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs, the amplification circuit 15 is for outputting after amplifying this regeneration signal R F with a predetermined gain. The 2 digitizing circuit 16 is to digitize the reproduced signal 2 output from the amplifier circuit 15 in accordance with the predetermined reference level, and output the 2 digitizing signal BD. The PLL circuit 17 is a signal that reproduces the channel clock CK of the BD signal. The synchronous-type detection circuit 18 detects the return pattern appearing at the receiving end of the 2D signal B D. This is a comparison with Figure 2. As shown in Figures 3 (A-1) to (A-4), the 2 値 signal BD corresponds to the Chinese paper standard (CNS) A4 (210 X 297 mm) -8- 546640 A7 B7 printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 5. Description of the invention (6) The signal level is switched by forming a pit array of small laser discs 1 'is allocated in each The receiving end of the message box at the beginning of the message box; after the period of the period 1 1 τ, the signal level is raised, and then the period of the period 1 1 T, the signal level. The synchronous type detection circuit 18 uses the forward and reverse circuits connected in multiple stages and uses the channel clock C K as a reference to determine the continuous signal level of the 2H signal B D and detects the receiving end of this message box. Furthermore, from the detection result of the receiving end of the message frame, the synchronous type detection pulse wave S Y (FIG. 3 C) that raises the signal level is output between the head of each message frame and the period T of the one-channel clock. The synchronization pattern prediction circuit 19 is based on the synchronization pattern detection pulse wave and is configured as a ring counter that counts the channel clock CK. Between the head of each message frame and the period T of the one channel clock, Output the message box pulse wave FP (Fig. 3C) to raise the signal level. Therefore, the synchronization type prediction circuit 19, due to a failure, is that when the synchronization type detection circuit 18 cannot correctly detect the message frame receiving end, it also predicts each message frame receiving end and outputs a message frame pulse wave F P. The disc identification code generating circuit 20 is composed of a sub code detecting circuit 20A and a ROM 20B. Here, the code detection circuit 20A decodes the 2-coded signal B D and reproduces the sub-code information contained in the 2-coded signal B D. Further, the disc identification code generating circuit 20 selectively outputs time information of minutes (A MIN) and seconds (ASE C ') from the time information formed by the minute code, second, and message frame contained in the subcode information. . However, the time information in minutes (A MIN) and seconds (ASEC) here is the sub-code information that specifies the specifications of the small laser disc 1; it means that the small paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) (Please read the precautions on the back before filling out this page) Equipment > 1-1 n · mmm— mmmmt ϋ · —-Hi J ， 1 eMmw Hi * 1 ^^ 1 n I \ 言 矣 ^- 9- 546640 A7 B7 V. Description of the invention The data position on the (7) type laser disc 1. It is the time of minute (am I N). The information is expressed in minute units, which indicates the data recorded on the small laser disc; for example, you can get 0 ~ 7 4 of the time. In addition, the time information of (A S E C) is to finely specify the position of the minute unit specified by the minute (A M I N) in seconds; obtain 0 ~ 59. The ROM 2 0 B ′ holds the disc identification code E D and outputs the time information of the minute (AM I N) and second (A S E C) output by the secondary code detection circuit 2 0A to hold the address data. Here, the disc identification code BD is composed of ID information set for each disc, information of the manufacturing factory, manufacturing date, date of control, and information for controlling whether copying is allowed. It includes synchronization indicating the beginning of the disc identification code. Signal, error correction code, etc. ROM 2〇B holds the disc identification code ED in bit data, and outputs 1-bit disc identification for 1 address formed by time information of minutes (A MIN) and seconds (ASEC). Code ED. Therefore, the ROM 20B outputs a 1-bit disc identification code E D every 1 second. The modulation circuit 21, in response to the disc identification code ED, 'increases the control signal MX of the APC circuit 14 at a predetermined time; thereby instantly increasing the light amount of the laser beam and locally changing it to a small laser The reflectivity of the disc 1. That is, as shown in FIG. 4, the modulation circuit 2 1 and the M-series generating circuit are composed of a plurality of flip-flops and X〇R (exclusive-〇R) circuits connected vertically to correspond to the change. The time of the time information in seconds (ASEC) is set at the initial frame after these flip-flops, and the set content is synchronized with the message box pulse FP and transmitted in sequence, and the Chinese national standard is applied to the paper size (CNS) A4 specifications (210 X 297 mm) (Please read the back ^ / notes before filling out this page) -install -------- order --------- line j Ministry of Economy Printed by the Intellectual Property Bureau's Consumer Cooperatives 10-546640 Α7 Β7 V. Description of the invention (8) Feedback between fixed segments, and generate random data MS of series M with logic rate 1 and logic 0. Therefore, the M-series signal MS becomes a series of returning the suspected random number of the same type at a period corresponding to 1 bit of the disc identification code E D. X〇R circuit 24, accepts M series signal MS and disc identification code E D, and outputs this exclusive logic and signal. That is, X〇R circuit 24. When the disc identification code ED is logic 0, the exclusive logic and signal are output at the logic level of the M series signal MS. In contrast, when the disc identification code ED is logic 1 At that time, the exclusive logic and signal formed by inverting the logic level of the M-series signal MS are output. Therefore, the XOR circuit 24 adjusts the disc identification code E D by the M series random number. The flip-flops 2 2 Α to 2 2 P are vertically connected, and the pulse wave FP of the message box is input to the flip-flops 2 2A in the initial stage. These flip-flops 2 2A ~ 2 2 P transmit the message frame pulse wave F P in synchronization with the channel clock C K in sequence. The consumer cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs printed OR circuits 25. Among these flip-flops 22A to 22P, the flip-flop 2 2 E in the fifth paragraph and the flip-flop 2 2 in the final paragraph of the 16th paragraph P accepts the output and outputs these logics and signals. Therefore, after the receiving end of the output signal box of the 5R circuit has passed, and the channel clock CK 5 cycle minutes elapses, only one channel clock period τ is used to raise the signal level. In addition, after the receiving end of the message box starts, the wave passes During a period of 6 clock minutes of the channel clock c κ 1, there is only a pulse wave signal W P that raises the signal level of the 1-channel clock period T. In addition, the period during which the signal level of this pulse wave signal W P is provided is to form the pits of the period 1 1 τ and the period 1 1 T at the receiving end. The paper standards of this paper apply the Chinese National Standard (CNS) A4 specification (210 X 297 mm) • 11-546640 Α7 Β7 V. Description of the invention (9) The 1-channel clock cycle T of each center of the hole; corresponding to a position sufficiently separated from both ends of the hole and the hole. The AND circuit 2 6 is a logical product signal of the exclusive logic sum signal output from the XOR circuit 24 and the pulse wave signal W P as the light quantity control signal MX (FIG. 3D) of the APC circuit 14. The A P C circuit 14 (Fig. 1) controls the signal MX in response to this amount, and switches the light amount of the laser beam from the light amount during reproduction to the light amount during recording. The amount of light during recording here is a sufficient amount of light for changing the reflectance of the small laser disc 1 reflecting the recording surface. The system control circuit 28 is composed of a computer that controls the overall operation of the processing device 10, and uses the sub code detected by the sub code detection circuit 2 0 A as a reference to find the optical pickup head 1 3. In the predetermined area of the laser disc 1, the above-mentioned disc identification code ED is recorded. Therefore, the processing device 10 is located at the center of the pit of the cycle 1 1 T and the center of the hole of the cycle 1 1 T that forms the receiving end type. The processing device 10 responds to the disc identification code ED modulated by the random data MS. Increasing the light quantity of the laser beam, and additionally recording the disc identification code ED (Fig. 3E-1 and Fig. 3E-2). Therefore, it is a small-sized laser disc 1. When the disc identification code ED is not additionally recorded, for these pits and holes, a reproduction signal RF (3 F — 1) formed by a signal waveform that is almost necessarily saturated is obtained. In this way, when the disc identification code ED is additionally recorded, near the center of the pit and the hole, a reproduction signal RF formed by locally changing the signal level according to the characteristics of the reflective recording surface 3 is obtained (Fig. 3F-2). The small laser disc 1 is based on the change in the signal level of the reproduction signal RF. The identification of the reproduction disc is based on the Chinese National Standard (CNS) A4 (210 X 297 mm). Please read it first. · Precautions

Page Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs -12- 546640 Α7 Β7 Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 5. Description of the invention (10) Code E D. Fig. 5 is a block diagram showing a compact disc player 1 which reproduces this compact laser disc. In this compact disc player 30, the spindle motor 3 2 ′ is driven by the servo circuit 33 to control the compact laser disc 1 under the condition of constant line speed. The optical pickup head 3 4 irradiates the laser beam to the small-sized laser disc 1 and receives its return light, and outputs a reproduction signal R F that changes the signal level according to the light amount of the return light. Here, the reproduction signal R F changes the signal level corresponding to the pit recorded on the compact laser disc 1. At this time, the compact laser disc 1 is formed to change the reflectance locally by recording the disc identification code ED. Therefore, the signal level of the reproduction signal RF corresponds to the reflectivity caused by the disc identification code. Change. However, as for the pits and holes with a period of 1 T, the reflectivity is locally changed due to the distance set by the edges and ends of these pits and holes. Therefore, the signal level of the RF signal of these pits and holes is transected in order to identify The reference level is maintained at the same time as when there is no change in reflectivity. Because of this, the 2 digitization circuit 3 5 makes the reproduction signal R F 2 digitized by the reference level to make a 2 digitization signal B D. Therefore, since the local reflectance change of the small laser disc 1 is in the center of the pit and hole with the period 1 1 τ, the local reflectance change is not detected for a 2H signal. The PLL circuit 36 operates on the basis of the 2C signal BD, and reproduces the channel clock CCK of the RF signal. The FM demodulation circuit 37 uses the channel clock C CK as a reference. Shun Jiang 2 signal BD latch, regeneration corresponding to EF Μ modulation signal. This paper size applies Chinese National Standard (CNS) A4 specification (210 X 297 mm). Please read it first. Page I-IIIIII Rev.-13- 546640 A7 B7 V. Reproduction data of invention description (11) No. s 2 Further, the E FM demodulation circuit 37 demodulates the reproduced data EF M, and uses the receiving end of the message frame as a reference. The demodulated data is separated by 8-bit units, and the signals that have been generated in 8-bit units are non-interleaved and output. To ECC (Error Correcting Code) circuit 38. The E C C circuit 38 performs error correction processing on the output data according to the error correction code added to the output data of the E FM demodulation circuit 37, so the audio data D 1 is reproduced and output. The digital / analog conversion circuit (D / A) 39 processes the digital data D 1 output by the ECC circuit 38 to a digital analog process, and outputs an audio signal 34 which has become an analog signal. At this time, the digital / analog conversion circuit 39 is controlled by the system control circuit 40, and it is judged that this small laser disc 1 is an illegally copied disc, and the output of the audio signal S 4 is suspended. The system control circuit 4 0 is constituted by a computer that controls the operation of this compact disc player 30. The system control circuit 40 controls the entire operation in advance to access a predetermined area of the small laser disc 1. Based on the disc identification code ED output from the disc identification code reproduction circuit 41, the small laser disc is judged. 1 Whether it is illegal copying; when it is judged that illegal copying is performed, the control of the audio signal S 4 output from the digital / analog conversion circuit 39 is stopped. The disc identification code reproduction circuit decodes the disc identification code E D by the reproduction signal R F and outputs it. Fig. 6 is a block diagram showing the disc identification code reproduction circuit 41 in detail. The disc identification code regeneration circuit 4 1 and the synchronous type detection circuit 4 3 are based on the channel clock CCK, and the 2 値 値 signal is applied in accordance with this paper. The paper standard applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) (Please read the notes on the back before filling this page) Order --------- line, printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs -14- 546640 Α7 Β7 V. Description of the invention (12) (Please read the precautions on the back before filling in this page) BD latch, determine the continuous logic level of the office and detect the receiving end type ° and then the synchronous type detection circuit 4 3, which has been detected The output terminal type is used as a reference, and the message frame pulse wave FP of the signal level of the rising and rising signal level is output between the period T of the 1 channel clock at the beginning of each message block. The Μ series generating circuit 45, under the control of the system control circuit 40, initializes the address at a predetermined time, and then uses the message frame pulse wave F P to sequentially step into the address to access the built-in R 0 Μ Therefore, the M series random number data M ZZ corresponding to the M series random number data MS generated by the processing device 10 is generated. The analog / digital conversion circuit (A / D) 47 uses the channel clock C CK as a reference to process the RF analog digital conversion of the reproduced signal and outputs an 8-bit analog reproduced signal. Polarity inversion circuit (-1) 4 8 Inverts the polarity of this digital reproduction signal and outputs it. The consumer cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs prints a selector 49. The output is selected by the analog / digital conversion circuit 47 directly according to the logic level of the series M random number data MX output by the series M generation circuit 45. The input digital reproduction signal and the digital reproduction signal formed by the polarity input by the polarity inversion circuit 48 are inverted. That is, the selector 49 is used to select the digital reproduction signal that is directly input when the M series random number data MZ is logic 1. On the contrary, when the M series random number data is logic 0, the selected polarity is selected. Reverse digital reproduction signal. Therefore, the selector 4 9 reproduces the logical level of the digital identification code E D modulated by the M series random data M S with multiple data, and outputs the reproduced data R X in the form of the multiple data. Detector circuit 50 in the center of the pit and the modulation circuit of the processing device 10. The paper size applies to the Chinese National Standard (CNS) A4 (210 X 297 mm) -15- 546640 A7 B7 V. Description of the invention (13) 2 1 Similarly, it is composed of 16-segment flip-flops connected vertically and an OR circuit that receives the predetermined output of these flip-flops. The pit center detection circuit 50 uses these flip-flops to sequentially transmit the message frame pulse wave FP. Therefore, in the pit center of the period 1 1T and the center of the hole of the period 1 1T, only the 1-channel clock period T outputs the boost signal. A signal CT was detected at the center of the level. The sub-code detection circuit 51 uses the channel clock C C K as a reference to monitor the 2D signal B D, and the 2D signal B D decodes the sub-code information. Furthermore, the sub code detection circuit 5 1 monitors the time information in the decoded sub code information, and outputs a pulse wave S E C P detected by 1 second each time this time is changed to raise the signal level. The adder 5 2 is a 16-bit digital adder; the output data of the reproduced data RX and the accumulator (ACU) 5 3 are added and output again. The accumulator 5 3 is composed of 16-bit memory holding the output data of the adder 5 2 and feeds back the held data to the adder 5 2 to form a cumulative adder together with the adder 5 2. That is, the output data of the adder 5 2 is recorded at the time when the signal C T is detected at the center. Therefore, the adder 5 2 ′ accumulates the logic 再生 of the reproduced data R X reproduced by the selector 4 9 at every second of the time information formed by the sub-code information (between 7 350 message frames), and outputs the accumulated 値 A X. The 2 conversion circuit 5 4 increases the time for detecting the pulse wave S E C P by 1 second ′, and converts the output data A X 2 of the accumulator 5 3 into a predetermined value and outputs it. Therefore, the reproduction data R X of the disc identification code C D reproduced by the selector 49 is converted into a disc identification code E D of 2 値. ECC circuit 5 5 uses the paper size attached to the disc identification code ED to apply Chinese National Standard (CNS) A4 specifications (210 X 297 mm) (Please read the precautions on the back before filling this page) Order- -------- Line. Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs -16-546640 A7 B7 V. Description of the invention (14) Error correction code. The disc identification code ED is corrected by error and output. (1-2) The operation of the first embodiment lies in the above structure. In the manufacturing process of the small-sized laser disc 1 of this embodiment, a master disc is made by using a normal main device, and an original mold made by the master disc is used. Make a disc substrate 2. Further, a reflective recording surface 3 and a protective film 4 are formed on the disc substrate 2 to form a compact laser disc 1 (Fig. 2). Therefore, the compact laser disc 1 records pits and holes formed by lengths that are integer multiples of the basic length of the predetermined substrate period T, and records digital audio signals and the like.

At this time, the compact laser disc 1 has the same film structure on the reflective recording surface 3 as the information recording surface of CD-R. Therefore, if the laser light speed L is irradiated at a predetermined light amount or more, the laser beam irradiation position can be changed reversibly. The reflection rate of the reflection recording surface 3 is added, and the main data recorded by the return of the pits and holes can be added to record the auxiliary data to constitute it. The small laser disc 1 made in this way lies in the processing device 10 (Fig. 1) and reproduces a predetermined area under the control of the system control circuit 28. The disc identification code ED is recorded in this predetermined area to make it There is no effect on the reproduction of recorded digital audio by returning pits and holes. That is, in the processing device 10, the reproduced signal RF obtained by the optical pickup head 13 is converted into a 2D signal by a 2D circuit 16 and a BD is formed by the synchronous type detection circuit 1 8 Signal detection receiver type. Therefore, regarding the pits and holes having the longest period of 1 1 T among the pits and holes formed in the small-sized laser disc 1, the start time of these pits and holes is detected. This paper size applies to China National Standard (CNS) A4 specification (210 X 297 mm) ------------- (Please read the precautions on the back before filling this page) Order ---- ----- Line · Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs-17- 546640 Α7 Β7 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 5. Description of the invention (15) Furthermore, it is a synchronous type prediction circuit 1 9 In order to generate the rising signal level of the message box pulse wave FP at the start time of the receiving end type; therefore, when the 2D signal BD cannot be reproduced due to an error, the correct start time for the pits and holes is detected. . Furthermore, the modulation circuit 21 (Fig. 4) transmits the message box pulse wave FP in sequence of flip-flops 2 2 A to 2 2 P, and outputs of the flip-flops of the 5th and 16th stages. The OR circuit 25 is used for synthesis; therefore, for these pits and holes with a period of 1 1 T, the 1-channel clock period T of the central part of the pit is detected. In conjunction with these, the sub code detection circuit 20A (Figure 1) reproduces the sub code, and from this sub code, the information of the specific reproduction position is detected in minutes (A M IN) and seconds (ASEC); then the ROM 20B The disc identification code ED is output corresponding to the information specifying these reproduction positions. At this time, ROM 2 0 B holds the disc identification code ED with bit information, and outputs the disc identification code ED held by information access of minutes (A MIN) and seconds (ASEC). The extremely low bit rate of the bit outputs the disc identification code ED. In addition, the M series generating circuit 2 3 is synchronized with the message frame pulse wave F P to generate the M series random number data MS which generates logic 1 and logic 0 at an equal rate; and the X 0R circuit 2 4 is used for this series. The data MS adjusts the disc identification code ED. Further in the AND circuit 26, the output of the XOR circuit 24 is opened and closed by the output of the OR circuit 25; therefore, it is generated in response to the disc identification code ED modulated by the M series random data MS. The paper is generated in the central part of the pits and holes of the cycle 1 1 T. The paper size is applicable to China National Standard (CNS) A4 (210 X 297 mm) ---------------- ----- Order --------- Line 1 (Please read the precautions on the back of the page before filling out this page) -18- 546640 A7 B7 V. Description of the invention (16) Control signal for ascending signal level MX. The small laser disc 1 is used to control the signal MX to increase the laser beam (please read the precautions on the back before filling this page). The amount of light locally changes the reflectance of the reflective recording surface 3; therefore, the period 1 1 Τ The central part of the pit and hole forms a mark to form the disc identification code ED. Such marks lie in the pits and holes of the period 1 1 T, which are formed in the central part, and therefore are reproduced signals that change in response to the pits and holes, corresponding to the signal levels at the edges of the pits and holes. It is kept at the same signal level when the mark is formed as when no mark is formed. Therefore, the reproduction of the master data formed by these pits and holes is not affected in any way, and the disc identification code E D recorded as the subsidiary data is not affected. That is, the number of openings in the optical system for reproducing data formed by such pit rows is set to NA and the wavelength of the laser beam is set to λ. Then, the information recording surface of the small-sized laser disc 1 is formed with a diameter D 1 light spot. However, the diameter D1 here is a half of the width of the light spot. η η _ 1 · 2 2 · λ / (λ λ D 1-/ ΝΑ… · " (4) Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs. Therefore, if the mark is formed by the aforementioned edge isolation distance D 1 'For the light spot, the mark and the edge are not scanned at the same time. For this point, the position information of the edge is to set the average level of the reproduced signal RF to a critical level.' The signal level of the reproduced signal RF crosses this critical level. Time; this time 'corresponds to the time at the center edge of the light spot. At this time, when the beam is not irradiated to the target at the same time, the time when the critical page cuts the critical edge does not form the standard. National Standard (CNS) A4 Specification (210 X 297 mm) -19- 546640 Α7 Β7 V. Description of Invention (17) is also maintained. (Please read the precautions on the back before filling this page) Therefore, (4 As shown in the figure below, for the distance D 1, if the distance D 1 is separated by the front and back edges to form a mark, the reproduction of the master data formed by the pits and holes will not be affected in any way. , And disc titles that can be reproduced as secondary data Code ED. D 1 = 1 · 2 2 ·% · Na ...... (5) Here the general number of openings of a small disc player NA is 0.45; the wavelength is λ is 0 · 7 8 [ # m] 'So to solve the formula (5), D 1 = 1 · 0 6 [// m]. The small laser disc 1 rotates at a linear velocity of 1 · 2 [m / sec], and the channel clock CK The frequency becomes 4. 3 2 1 8 C Μ Η z], so if a mark is formed by isolating a distance equivalent to a 4-channel clock period from the edge, the distance D 1 of the formula (5) is separated by more than the distance D 1 from the edge Isolate and make a mark. If printed by the consumer cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs, if the edges of the pits and holes are isolated to correspond to a distance of about 4T or more, the mark can be changed by the amount of light returned. The edge information of the detected pits and holes and the information formed by the marks are separated and reproduced. Therefore, the reproduction of the main data formed by the pits and holes is not affected in any way, and the disc identification code ED recorded as the auxiliary data is recorded. At this time, because the M series random number data MS with logic 1 and logic 0 appear at an equal rate, the disc identification code ED is adjusted, and The change in the reproduction signal RF caused by the change in the rate is observed as noise mixed into the reproduction signal RF; therefore, it can make it difficult to observe and discover the disc identification code ED. This paper standard applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) -20- Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 546640 A7 B7 V. Description of the invention (18) It can also make it difficult to copy the disc identification code ED ° In addition, by adding these, The 1 bit of the film identification code ED is allocated in a period of 1 second, that is, the 1 bit is scattered throughout the 7 3 50 0 (7350 = 75x98) CD message box and recorded, which is changed due to noise, etc. The reproduction signal can also reliably reproduce the disc identification code ED. Furthermore, the small laser disc 1 that records the disc identification code ED in this way can also copy the digital audio signal D 1 formed by the pit row by using the method that cannot be copied in the past. However, copying the disc identification code ED will have difficult. That is, similar to this small laser disc 1, when it is impossible to make a copy, it is also necessary to record the disc identification code ED with a mark, and record the digital audio signal D 1 in a pit row in advance; in addition, it must be prepared in the same way as the processing device 1 〇 Composition of the device. This can make it difficult to record the disc identification code E D. That is, a small laser disc (Figure 51) made in this way lies in the small disc turntable 30, which detects the regeneration of the signal level that changes due to the amount of light returned by the laser beam. The signal RF, therefore, the signal level of the reproduced signal RF changes depending on the reflectivity of the pits and holes or the compact laser disc 1. The reproduced signal RF is converted into 2 using a 2 conversion circuit 3 5. Then, the 2D signal B D is identified by the 2F using the E F M demodulation circuit 37, and then demodulated and interleaved by the E F M, and is subjected to error correction processing by the E C C circuit 38; therefore, the digital audio signal D 1 is reproduced. At this time it is a small laser disc1. The paper size formed by locally changing the reflectivity is applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 public love) !! 4 ^ rate (please read the precautions on the back first) Fill out this page) -21-A7 546640 B7____ V. Description of the invention (19) (Please read the precautions on the back before filling this page) Mark the pits and holes in the cycle 1 1 T and mark them by the sides (front and back). The two sides) are isolated in the center of the pit and the hole corresponding to a distance of more than 4 T. Therefore, the change of the signal level near each end caused by the formation of this mark is prevented; therefore, it is to record the disc identification code ED. The compact laser disc 1 can also be accurately reproduced by a normal compact laser disc. For the regeneration of the digital audio signal D 1 performed in this way, the compact laser disc 1 is accessed in a predetermined area, and the disc identification code ED is reproduced from this area. When this disc identification code cannot be reproduced correctly When ED, the digital-to-analog conversion processing of the digital-to-analog conversion circuit 39 is stopped and treated as illegal copying. That is, for the regeneration of the disc identification code ED (Figure 6), the small laser disc 1 detects the receiving end of the message box in the synchronous type detection circuit 4 3; the detection of the receiving end of the message box is The reference lies in the M-series generating circuit 45, which generates M-series random number data MZ corresponding to the M-series random number data MS at the time of recording. The Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs prints another regeneration signal RF which is converted into an analog regeneration signal using an analog / digital conversion circuit 47. Based on the M series random data M ZO, the selector 4 9 is used to select this digital regeneration signal or It is a digital reproduction signal formed by reversing the polarity, and thus reproduces the reproduction data RX formed by expressing the logical level of the disc identification code ED with multiple data. In the compact laser disc 1, this reproduced data is accumulated in units of 1 second using the accumulator 5 3 and the adder 5 2; therefore, the S / N ratio is improved. In addition, this cumulative result is decoded by the 2D circuit 5 4 to decode the disc identification code ED, and then the ECC circuit 5 5 is used to perform error correction processing. The paper size of this paper applies the Chinese National Standard (CNS) A4 specification (210 X 297 public love) -22- 546640 Α7 Β7 V. Description of the invention (20) To the system control circuit 40. (1 to 3) The effect of the first embodiment is based on the above structure. The pits and holes at the receiving end are detected at a period of 1 T, and marks are formed at the center of these pits and holes at the edge isolation period of 4 T. The disc is recorded. Chip identification code, so that it does not affect the position information of the edge, and locally changes the reflective film of the pits and holes; the reproduction of the digital audio signal D 1 formed by the pit rows can be used to reproduce this without any impact. The pickup of the digital analog signal D 1 is reproduced, and copying by illegal copying makes it difficult to record the disc identification code. In addition, regarding the pits and holes of the receiving end type of regular recording, since the disc identification code is recorded with a mark, the regularity can be used to easily record the disc identification code. At this time, since 1 bit of the disc identification code is allocated, the pits and holes of the receiving end type allocated within about 1 second are recorded, and the disc identification code can be reliably reproduced because it can avoid the influence of noise and the like. Furthermore, the disc identification code is adjusted by using M series random data to record. Therefore, the disc identification code can be recorded with noise easily, and the disc identification code can be difficult to find and analyze. In addition, during reproduction, the influence of noise can be effectively avoided to reproduce the disc identification code. In addition, this mark is formed with a length corresponding to the basic period T; similarly, the disc identification code can be recorded with noise easily, and the disc identification code can be difficult to find and analyze. In addition, in the compact disc player, the signal of the reproduction signal RF is detected. The paper size is applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 mm) (Please read the precautions on the back before filling this page). Order- ------- Line · Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs -23-546640 Α7 Β7 V. Description of Invention (21) (Please read the precautions on the back before filling this page) Decode the disc after labeling The disc identification code eliminates the influence of noise that accumulates this signal and is mixed into the disc identification code, so that the recorded disc identification code ED can be reliably reproduced and noisy. In addition, the selector 49 uses the M-series random data to selectively process digital reproduction signals and reproduce disc identification codes, so that the disc identification codes that are difficult to find and analyze can be reliably reproduced. (Second Embodiment) Fig. 7 is a block diagram showing a processing apparatus according to a second embodiment of the present invention. This processing device 60 detects pits with a period of 9T or more, and records the disc identification code E D in these pits. However, the structure shown in FIG. 7 is the same as that of the processing device 10 in the first figure, and the corresponding figure numbers in the notes will be omitted. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs is the processing device 60, and the system control circuit 61 is composed of a computer that controls the overall operation of the processing device 60. The code is used as a reference to control the movement of the optical pickup head 13; therefore, the optical pickup head 13 is used to scan the field set in the ED recording field of the disc identification code every 2 times in order. At this time, the system control circuit 6 1 lies in the first tracking, and keeps the logic 0 for the tracking signal T 1, and lies in the second tracking following the scan of the location scanned by the first tracking. The tracking record T1 is switched to a logical one. However, the first tracking is to detect pits with a period of 9T or more, and the second tracking is to record the disc identification code to a pit with a period of 9T or more based on the detection result. This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) -24-546640 Α7 Β7 V. Description of the invention (22) Morphological detection circuit 62 above 9 T, in the first tracking, A pulse width of 9 T or more is detected in the channel clock, so pits longer than the period are detected. (Please read the precautions on the back before filling in this page) That is, as shown in Figure 8, the 9 T or more type detection circuit 6 2 has 1 3 segment flip-flops 6 4A ~ 6 4M connected vertically. In the first stage of these flip-flops 6 4A ~ 6 4M, input the 2 値 signal BD. These flip-flops 6 4 A ~ 6 4 M are synchronized with the channel clock C K and transmit input data in sequence. The AND circuits 6 5 Α to 6 5 C respectively input the outputs of these flip-flops 6 4A to 6 4M and output logical product signals. At this time, the AND circuit 65 reverses the logic level and outputs the output from the flip-flops 64A, 64B, 64L, and 64M of the first stage, the second stage, the second stage, and the final stage; therefore, the logic "0 0 1 1 1 1 1 1 1 1 1 0 0 ", that is, when the logic level corresponding to the pit shape with a length of 9 T is continuous, the logic level of the logical product signal is increased. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs, AND circuit 6 5 B, which reverses the logic level and inputs the flip-flops 6 4 A, 6 4 L, 6 4 Μ from the initial stage, the 12th stage, and the final stage. The output output; therefore, when the output of "0 1 1 1 1 1 1 1 1 1 1 〇" is obtained, that is, when the logical level of the pit shape corresponding to the length of 1 Τ is continuous, the logical standard of the logical product signal is improved. Bit. The AND circuit 6 5 inverts the logic level and inputs the output output from the flip-flops 6 4 A and 6 4 M of the initial stage and the final stage; therefore, the logic "0 1 1 1 1 1 1 1 1 1 1 1 1 1 The output of "0" means that when the logic level corresponding to the pit shape of length 1 1T is continuous, the logic level of the logical product signal is improved. This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) -25- 546640 A7 B7 V. Description of the invention (23) 〇R circuit 66 Calculates the output signal logic output by the AND circuits 65A ~ 65C And, the detection cycle is 9T, 10T, (Please read the precautions on the back before filling in this page) One of the pits of 1 1 T will output the logic and signal MD like logic "1". The flip-flop 67 samples the logic and signal MD with the channel clock CK, removes the influence of low-frequency interference noise and the like through waveform shaping, and detects and detects the pulse wave N P. The pattern prediction circuit 63 of 9 T or more is switched according to the logic level of the tracking signal T 1 output by the system control circuit 61, which is the first tracking, and for 9 T or more for the period The pit records the position information; in the second tracking, according to the recorded position information, the time signal EP for recording the disc identification code is output. Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs, as shown in Figure 9, is a type prediction circuit 6 3 and a sub-code detection circuit 6 9 of 9 T or higher. It is based on the channel clock CK and processes 2 値. The signal BD is converted, and the position information (message frame (AFRA M E), second (ASEC), minute (A MIN)) of the small laser disc 1 recorded as the sub code is reproduced. Here, the message box (A F R A Μ E) divides the position information into 75 equal parts in 1 second. In addition, the sub-code detection circuit 6 9 decodes the SO flag (the synchronous type of the sub-code) included in the sub-code, and outputs it as the sub-code flag SOF L A G of the 1 message box indicating the sub-code. The synchronization type prediction circuit 70 uses the channel clock CK as a reference to monitor the logical level drawn by the 2D signal BD, and detects the receiver's message box 'output at the start time of each message box to improve the signal level. The receiver's message box detects the signal SY. Synchronous type prediction circuit 71 is detected by the receiver's message frame. The paper size is applicable to China National Standard (CNS) A4 (210 X 297 mm) -26- 546640 Α7 Β7 V. Description of the invention (24) No. SY is a ring counter of the reference counting channel clock; therefore, when the synchronous type detection circuit 70 does not detect the receiving end message frame, it is also sent without defects using the receiving end message frame periodically. Message box pulse wave FP. The counter 72 is composed of a ring counter based on the pulse wave F P of the message frame and the above-mentioned channel clock CK; therefore, it outputs a count of position information divided by 5 8 8 in one E FM message frame 値 E F M C. Further, the counter 72 uses the sub-code period flag SOFLAG as a reference, and counts up the information frame pulse wave F P; therefore, it counts the position information of a CD message frame 98 and the like D C DC. When the counts 値 EFMC and CDC are output in this way, the counter 7 2 counts the continuous channel clock C C when the tracking signal T 1 is .logic 0 (that is, the first tracking). When the time count (EFMC) of the pulse wave F P of the message frame is raised, it becomes 则 0; when the tracking signal T1 is a logic 1 (that is, the second tracking), when the continuous channel is counted up Pulse CK, so that it increases the time count of the pulse wave FP in the message frame, EFMC, to become 7. Printed here by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs, corresponding to the 7 cycles of the channel clock CK7 of 値 7, the laser beam irradiation position set by counting 値 EFMC is equivalent to counting from this The EFMC delays the time signal E P until the light amount of the laser beam is increased. Therefore, the counter 72, which is the second tracking, counts the channel clock CK and advances the minute and count 値 E F M C of this delay time. Memory 7 4 is the position capital paper size formed by the sub-code detection circuit 6 9 applicable to China National Standard (CNS) A4 specification (210 X 297 mm) -27- 546640 Α7 Β7 Intellectual Property Bureau of the Ministry of Economic Affairs employee consumption Cooperative printed five, invention description (25) message (message frame (AFRA M E), second (ASEC) A M IN), counter 7 2 position information formed by the EFMC, CDC set the address and record the detection pulse It is composed of billions of bodies, and it responds to the tracking signal T 1 to switch the action track δΤ1 number T 1 to be 0 times (that is, the first tracking time 7 4 is to set the address of these location information and record it by 9). The detection pulse wave NP output by the detection circuit 62 is for the track balance number 1 when the balance is 1 (that is, when the second tracking is performed). 7 4 is held to set the address of the position information. The internal signal EP is output. The modulation circuit 75 is composed similar to the above-mentioned modulation in FIG. 4. That is, the modulation circuit 75 is connected vertically to the inverters, and these inverters are used to The channel clock cycle follows the frame pulse wave. Then the modulation circuit 7 5 receives the output from these flip-flops. Therefore, it is a pit with a period of 9T or more, and a period of 4T is passed from this end, and a time signal with a cycle level of only 1 channel clock is generated. Then, the modulation circuit 7 5 is based on the time signal EP. A series of random data is used to modulate disc identification and use the time signal generated by the flip-flop to open and close this as the control signal MX. Therefore, the processing device 6 0 'is to satisfy the formula (5) Condition pits with a period of 9T or more record the disc identification code. That is, the pits with a period of 9T or more 'are from the beginning of this paper. The Chinese national standard (CNS) A4 specification (210 X 297 mm) is applied. The record of the counting wave NP. That is, when the memory is above the shape of the memory T, when the memory is, the memory capacity, as the time-varying circuit 2 1 The number of segments in the positive sequence to transmit the predetermined number of segments. The initial opening period of the pit is enhanced by logic T to generate the M code ED. For the transposition result, please read the back of the side isolation described before ~ Cautions before filling out this page-28- 546640 Employees of Intellectual Property Bureau, Ministry of Economic Affairs Printed by Consumer Cooperatives A7 B7 V. Description of the invention (26) Period 4 T and only period 1 T make it change the reflectivity, and it can also change the reflectivity without any influence on the position information of the front and back edges. In addition, this week is above 9 T Compared with the pits and holes with a period of 1 T, the pits are more frequent. Therefore, the 1-bit of the disc identification code can be recorded in most pits, and the trust of the disc identification code can be improved. In addition, when the small-sized laser disc of this embodiment is reproduced, the type detection circuit 9 formed by using the same structure as the shape detection circuit 62 applicable to the processing device 6 0-9 T or more, A pit of 9 T or more is detected. Regarding this pit, the signal level of the reproduction signal RF is detected and the disc identification code is reproduced. According to the structure of the second embodiment, a pit with a period of 9 T or more is detected. The same time as the first embodiment can be obtained by isolating the edge for a predetermined distance, changing the reflectance of the information recording surface, and recording the disc identification code. In addition, compared with the first embodiment, it is possible to reliably record the disc identification code; in addition, it is possible to increase the recording density of the disc identification code by shortening the time allocated to 1 bit of the disc identification code. (Third Embodiment) Fig. 10 is a block diagram showing a processing apparatus for a compact laser disc 1 according to a third embodiment. In this processing device 80, the pit detection processing and the additional recording processing of the disc identification code are performed at the same time when the track cycle is 9 T or more. However, the configuration shown in FIG. 10 is the same as the configuration of the above-described over-processing device 60 in FIG. 7, and the corresponding drawing numbers are omitted, and the description is omitted. That is to say, in this embodiment, the processing device 80 has a paper size for advance reading, which is applicable to the Chinese National Standard (CNS) A4 (210 X 297 mm) -ϋ Met tmmmm emmme me— ϋ emmem · ϋ n 0 n 1 nn. ·. ϋ n one by one · I l in 1 nn · (Please read the precautions on the back before filling out this page) • Line · -29- 546640 Printed by the Intellectual Property Bureau of the Ministry of Economic Affairs Consumer Cooperatives Α7 Β7 V. Inventions The optical pickup head 8 3 A of (27) and the recording optical pickup head 8 3 B scanned after the scanning track scanned by the pre-read pickup head 8 3 A by a predetermined time are explained. Therefore, the processing device 8 processes the reproduction signal RF obtained by the optical pickup head 8 3 A for advance reading, and detects pits with a period of 9 T or more. Based on this detection result, it is used for subsequent recording. The optical pickup 8 3 B records the disc identification code ED. That is, the processing device 8 0 inputs the detection result NP of the 9 T or more type detection circuit 6 2 into the FIF 0 memory 8 4 and supplies it to the modulation circuit 7 5 after a predetermined time delay, so the compensation is advanced. The delay time from the scanning track of the optical pickup 8 8 A for reading to the scanning 3 8 B for recording. The system control circuit 82 is composed of a computer that controls the operation of the processing device 80, so that the optical pickups 8 3 A and 8 3 B find the recording position of the disc identification code. According to the structure shown in FIG. 10, the pit detection processing and the disc identification code additional recording processing of the cycle 9 T or more are performed side by side at the same time. Therefore, the same effect as that of the second embodiment can be added to shorten the processing time. . (Other Embodiments) However, in the above-mentioned embodiment, "the case where the CD-ROM mold structure is applied to the reflective recording surface has been described", but the present invention is not limited to this. For example, the film structure of a relatively changing optical disc is also applicable. can. In addition, since the change in the reflectance is extremely small, a reflective film such as an ordinary aluminum alloy can also be used. This paper size applies to China National Standard (CNS) A4 (210 X 297 mm) ---------! Packing ------ " • Order --------- line -(Please read the precautions on the back of β before filling in this page) -30- 546640 Α7 Β7 V. Description of the invention (28) (Please read the precautions on the back before filling in this page) In addition to the first implementation described above In the form, the case where the edge isolation period of the pit is 5 T or more and the reflectance of the information recording surface is locally changed has been described. In the second and third embodiments, the case where the edge isolation period of the pit is 4 T or more is described. Although the reflectivity of the information recording surface is changed locally, the present invention is not limited to this, and the same effect can be obtained by making the reflectance of the information recording surface locally changed by the edge separation period of 3 T or more. Furthermore, by reducing the amount of change in reflectivity, information can be recorded using all pits or spaces regardless of the size of the pits. That is, when the reflectance of the information recording surface of the edge portion of the pit is changed a little, the reproduction signal is formed to generate jitter. However, the actual compact disc player produces a certain amount of jitter from the reproduced signal from the pits. There is no problem in practice, and the data formed by the pit rows can be reproduced. Therefore, when such jitter is allowed to deteriorate, the disc identification code can be recorded by changing the reflectance of all pits or spaces by a small amount (about 2%) regardless of the pit size or the length of the space. Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs. For the connection of this jitter, such as the FM method for modulation of small laser discs, the minimum reversal interval is the channel clock. This minimum reversal interval is a pit change such as a change in reflectivity from the edge of the pit where the minimum reversal interval is isolated, and a distance is also specified as a distance where the jitter caused by the change can be almost ignored. Therefore, if the disc identification code ED is additionally recorded from the edge of the pit at a place isolated above the minimum reversal interval, the jitter deterioration caused by the disc identification code ED is kept to a very small level, and the pit array can be reliably reproduced. FORMED INFORMATION. So for example, if it is a small laser disc, the paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) -31-546640 A7 B7 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs ), The distance corresponding to the 3-channel clock can be isolated from the edge of the pit, so that it locally changes the reflectivity and records the disc identification code. However, when the disc identification code is recorded by isolating the distance corresponding to the 3-channel clock from the edge of the pit, the disc identification code can be recorded in pits and holes with a period of 7 T or more. In addition, in the second and third embodiments described above, the case where the disc identification code is recorded at a pit with a period of 9 T or more has been described, but the present invention is not limited to this, and pits and holes recorded at a period of 9 T or more may be used. Furthermore, in the above-mentioned second and third embodiments, the case where the disc identification code is recorded with a period of 4 T from the edge isolation side of the pit at the beginning of the pit has been described, but the present invention is not limited to this, so that It may be recorded in the center of each pit with a period of 9 T or more. It is also possible to record the disc identification code using not only the pit but only the land portion. Generally, since the hole portion has a higher reflectance than the pit portion, recording in the hole portion results in recording also. As a result, reproduction becomes easier. In addition, in the above-mentioned L-th embodiment, the case where the disc identification code is recorded in the message frame portion of the predictable receiving end has been described, but the present invention is not limited to this, and it can also be applied if the signal that appears can be predicted in advance. On other signals. For example, all or a part of the signals recorded on the compact laser disc are known, and they are formed to predict the pits on the disc. In this case, the method is also applicable. It is assumed that a place that is sufficiently isolated from the edge portion of the pit is the inferred place, which instantly increases the laser output, so that the disc identification code E D can be additionally recorded. This paper size is applicable to China National Standard (CNS) A4 (210 X 297 mm) --------------------- Order --------- Line 1 (Please read the back ^ / Notes before filling out this page) -32- 546640 Α7 _ Β7 V. Description of the invention (30)

Furthermore, in the above-mentioned embodiment, it has been described that the pits of a predetermined length or more have only one channel clock period and locally change the reflectance of the information recording surface. However, the present invention is not limited to this. Partially changing the reflectivity by the distance set by the front and rear end isolation, the disc identification code can be recorded without jeopardizing the side information, so for example, in the pits and holes with a period of 9 T, there is only a central period of 3 T It is also possible to change the reflectance. In addition, in the above embodiment, the case of recording the disc identification code has been explained. 'But the present invention is not limited to this. The digital analog signal encrypted by pit recording is used to record this code. When the necessary key information is released, the data necessary for selecting and decoding the key information is recorded, etc., and various kinds of data necessary for canceling the encryption can also be recorded. In addition, in the above-mentioned embodiment, it has been said that the processing device of a small laser disc records the disc identification code, but the present invention is not limited to this, and is applicable to small laser discs, for example, it is arranged in a pit line. The number of times of reproduction and reproduction of recorded data is also acceptable. Furthermore, in the above-mentioned embodiment, the case where the accumulated data formed by the accumulator are identified and the secondary data row of the disc identification code is reproduced has been described, but the present invention is not limited to this, and it is made to recognize this accumulation more.再生 And regenerating the auxiliary data column is also possible. In addition, in the above-mentioned embodiment, the case of recording digital audio signals through EF modulation has been described, but the present invention is not limited to this. 1-modulation, 8--16 modulation, 2-7 modulation, etc. For a variety of modulation can be widely applied. This paper size applies to China National Standard (CNS) A4 (210 X 297 mm) (Please read the precautions on the back before filling this page)

-ί nnn ϋ I an-#-reJ # ϋ nn nnn I ϋ I Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs-33- 546640 A7 B7 V. Description of the invention (31) (Please read the notes on the back before filling (This page) In the above-mentioned embodiment, the case where the required data is recorded using the pit has been described, but the present invention is not limited to this, and can be widely applied to the case where the required data is recorded using the mark and space. In addition, in the above embodiment, the case where the present invention is applied to a small laser disc and its peripheral device to record audio signals has been described, but the present invention is not limited to this, and can be widely applied to video discs and the like and various optical discs and their peripherals. Device. [Effects of the Invention] As described above, according to the present invention, by changing the reflectance of the reflective film recorded in the pit, the reproduction of the main data row formed by the pit row is not affected at all, and the optical pickup of the reproduced main data row can be used. The head is reproduced, and it is difficult to reproduce by illegal copying, and the secondary data row can be recorded. [Brief Description of Drawings] Fig. 1 is a block diagram showing a processing apparatus for a compact laser disc according to a first embodiment of the present invention. Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs. Figure 2 is a cross-sectional view and timing chart of a small laser disc processed with the processing device in Figure 1. Fig. 3 is a time chart for explaining the operation of the processing device of Fig. 1. Fig. 4 is a block diagram showing the modulation circuit of the processing device of Fig. 1. Fig. 5 is a diagram showing the recycling of the first drawing. The paper size made by the processing device is applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 mm) -34- 546640 A7 B7 V. Description of the invention (32) Block diagram of a compact disc and a compact disc player . (Please read the precautions on the back before filling this page.) Figure 6 is a block diagram showing the disc identification code regeneration circuit of the compact disc player in Figure 5. Fig. 7 is a block diagram showing a processing apparatus for a compact laser disc according to a second embodiment of the present invention. Fig. 8 is a block diagram showing a 9 T or more type detection circuit of the processing device of Fig. 7; Fig. 9 is a block diagram showing a 9 T or more type predictive circuit of the processing device of Fig. 7; Fig. 10 is a block diagram showing a processing apparatus for a compact laser disc according to a third embodiment of the present invention. [Illustration of drawing number] 1: Small laser disc 2: Disc substrate 3: Reflective recording surface 4: Protective film Printed by the Consumer Cooperative of Intellectual Property Bureau of the Ministry of Economic Affairs 10, 60, 80: Processing device 13, 83A, 83B: Optical pickup 1 4: APC circuit 1 8, 4 1, 7 0: Synchronous type detection circuit 19, 7 1: Synchronous type prediction circuit 2 0: Disc identification code generation circuit 2 0 A, 5 1, 6 9: Sub-code detection circuit This paper size applies to China National Standard (CNS) A4 specification (210 X 297 mm) 35- 546640 A7 __B7 V. Description of the invention (33) 2 1, 7 5: Modulation circuit 3 0: Small disc turntable 41: Disc identification code reproduction circuit 6 2: 9 T or more type detection circuit 6 3: 9 T or more type prediction circuit (Please read the precautions on the back before filling this page) Order- -------- Printed by the Consumers' Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs, this paper is printed in accordance with China National Standard (CNS) A4 (210 X 297 mm) -36-

Claims (1)

546640 Α8 Β8 C8 D8 Patent Application Amendment Supplement r4 i No. 88107928 Patent Application Chinese Amendment of Patent Application Amendment > May 9, 2002 Amendment w, > ί f 1 · An optical disc recording device, its characteristics For: Return to the information recording surface in response to the pits and holes in the main data row. For the disc-shaped recording medium on which the main data is recorded, the beam of light is irradiated. Ά-. The reflectance of the information recording surface is recorded on the disc-shaped recording medium as described above with the sub data row. 2. If you apply for the optical disc recording device in the first item of the scope of patent application, it will be 刖 ----- ^-(Please read the notes on the back before filling this page) 1 bit of the data row is staggered and recorded in a plurality of the aforementioned pits and the aforementioned holes3. If applied, the optical disc recording device in the second item of the patent scope, wherein in the plurality of aforementioned hole sections, the 1 in the aforementioned auxiliary data row is repeatedly recorded Bit. 4. For the optical disc recording device in the second item of the scope of patent application, in which the data rows obtained by modulating the aforementioned auxiliary data rows by using random numbers to locally change the reflectance of the aforementioned information recording surface, the aforementioned auxiliary data is changed. It is recorded on the aforementioned disc-shaped recording medium. 5. The optical disc recording device according to item 4 of the scope of patent application, wherein the random number sequence is the M series synchronized with the aforementioned master data. .6 · If the optical disc recording device according to item 2 of the patent application scope, wherein the reflectance change of the aforementioned information recording surface, for Yushu pits or holes longer than a predetermined length, according to the auxiliary data column, it is isolated at the edge of the aforementioned pit The paper size of the space at the set distance is applicable to the Chinese National Standard (CNS) M specification (21 × 297 mm) 546640 A8 B8 C8 D8 6. The scope of patent application, which partially changes the aforementioned reflectance. 7. The optical disc recording device according to item 6 of the scope of patent application, wherein the aforementioned predetermined distance is the distance D shown by the formula: 2 2 · λ (1) 2 ·] ΜΑ Here ΝA is the reproduction of the aforementioned main data column The number of openings in the optical system; λ is the wavelength of the light beam suitable for the optical system. 8. The optical disc recording device according to item 6 of the application, wherein the predetermined distance is the shortest length formed in the pits or holes of the disc-shaped recording medium. 9 · The optical disc recording device according to item 1 of the scope of patent application, wherein the aforementioned subsidiary data row is an identification data row for identifying the aforementioned disc-shaped recording medium. 1 〇 If the optical disc recording device of the first scope of the patent application, the above-mentioned main data row is the data that has been coded; the above-mentioned auxiliary data row is the data row necessary to cancel the encoding of the above-mentioned main data row. 1 1 · If the optical disc recording device according to item 1 of the scope of patent application, the aforementioned subsidiary data row is the reproduction frequency data of the aforementioned main data row. 1 2. If the optical disc recording device according to item 1 of the scope of patent application, the aforementioned subsidiary data is the number of times of copying of the aforementioned main data. 1 3. If the optical disc recording device according to item 2 of the scope of patent application, which has / Mα · prepared ·. Return light obtained by irradiating the light beam, detection pits and holes; detection means to output detection results; and Good paper size: Chinese National Standard (CNS) Α4 size (210X297 mm) I —; binding line (please read the precautions on the back before filling this page) Printed by the Intellectual Property Bureau of the Ministry of Economic Affairs Consumer Cooperatives -2-546640 A8 B8 C8 D8 6. The scope of the patent application According to the aforementioned detection results, it generates means of a predetermined number sequence; and means of predicting the time when the aforementioned beam scans the aforementioned pit or hole and outputting the prediction result. ; And a light switching means for temporarily increasing the light quantity of the light beam and locally changing the reflectance of the information recording surface according to the prediction result, the data series, and the auxiliary data series. 14. The optical disc recording device according to item 2 of the scope of patent application, which includes: means for detecting the aforementioned pits and holes based on the return light obtained by irradiating the light beam, and outputting the detection result; and. Means for memorizing results; and means for generating random numbers in a series of suspected random numbers in accordance with the aforementioned detection results: and control means for scanning the aforementioned beams in pits and holes corresponding to the aforementioned detection results held in the aforementioned memory means ; And the light switching means for temporarily increasing the light quantity of the light beam and locally changing the reflectance of the information recording surface according to the detection result and the suspected and disordered data series kept in the memory means. Wait. 1 5 _If the optical disc recording device of item 2 of the patent application scope includes the first optical system that irradiates the first light beam on the aforementioned disc-shaped recording medium, receives the returning light, and outputs the light receiving result; and The paper size of the aforementioned pits and holes was detected and the detection results were output. The Chinese national standard (CNS) A4 specification (210X297 mm) was used. ---------- ^ II (Please read the note on the back first (Please fill in this page again for matters) Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs -3- 546640 Α8 Β8 C8 D8 VI. Detection method of patent application scope; and the first beam Backward, and irradiate the second beam on the disc-shaped recording medium, and temporarily increase the light amount of the second beam according to the detection result and the auxiliary data column, and change it locally to reflect the reflectance of the information recording surface. The second optical system. 16 · —A method for recording optical discs, which is characterized by: returning to the information recording surface in response to the pits and holes in the main data row, and irradiating the light beam to the disc-shaped recording medium recording the main data row; Optical disk recording method in which the sub-data row is recorded on the above-mentioned disc-shaped recording medium by the surface reflectance. 17 · The optical disc recording method according to item 16 of the scope of patent application, wherein 1 bit of the aforementioned sub data row is staggered and recorded in a plurality of the aforementioned pits and the aforementioned holes. 18 · The method for recording a disc according to item 17 of the scope of patent application, wherein in the plurality of holes described above, one bit of the aforementioned sub-data row is repeatedly recorded. 19 · If the disc recording method of item 17 in the scope of the patent application, the data rows obtained by adjusting the aforementioned sub data rows by using random numbers are locally changed to reflect the reflectance of the aforementioned information recording surface, so The sub data row is recorded on the disc-shaped recording medium. 20. The optical disc recording method according to item 19 of the scope of patent application, wherein the aforementioned random number series is the M series synchronized with the aforementioned data series. .2 1 · If the method of recording a disc according to item 17 of the scope of patent application, wherein the reflectance change of the aforementioned information recording surface is for the aforementioned pit or hole above a predetermined length, 'isolated by the side data column' at the edge of the aforementioned pit The paper size of the specified distance is in accordance with China's national standard (CNS > Α4 size (210 × 297)) ----- f-- (Please read the precautions on the back of the page before filling out this page) Printed by the Intellectual Property Bureau's Consumer Cooperative Cooperative -4- 640 640 A8 B8 C8 D8___, the patent application scope, which partially changes the aforementioned reflectance. 2 2. The disc recording method according to item 21 of the patent application scope, the aforementioned predetermined distance is Is the distance D shown in the following equation; 2 2 · λ ..... (2 Please read 2 * ΝΑ printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs, where NA is the optical column for regenerating the aforementioned main data column Number of openings; λ is the wavelength of the optical beam suitable for the optical system. 2 3 · The disc recording method according to item 21 of the patent application range, wherein the predetermined distance is the pit or hole formed in the disc-shaped recording medium. when The shortest length. 2 4 · If the disc recording method of item 16 in the scope of patent application, the aforementioned subsidiary data line is the identification data line for identifying the aforementioned disc-shaped recording medium. 2 5 · If the scope of patent application is the first 6 items of optical disc recording methods, in which the aforementioned main data row is the data row that has been coded; the aforementioned auxiliary data row is the data row necessary to cancel the encoding of the aforementioned main data row. 2 6 · If the scope of patent application The disc recording method of item 16 in which the aforementioned sub-data column is the number of times of reproduction of the aforementioned main data column. 2 7 · For the disc recording method of item 16 in the scope of patent application, wherein the aforementioned sub-data column is The data of the number of times of copying in the aforementioned main data column. 2 8 · If the disc recording method of item 17 in the scope of patent application, according to the return light obtained by irradiating the light beam, the pits and holes are detected; Generate a predetermined number of rows; Predict the time when the aforementioned beam scans the aforementioned pits and holes; Attentions on the surface and side gutters The paper dimensions apply the Chinese National Standard (CNS) Α4 specifications (21 0 X 297 mm) -5-546640 AB.CD Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs ^ The scope of patent application is based on the aforementioned forecast results, the aforementioned series and the aforementioned sub-data columns, and the light quantity of the aforementioned beam is temporarily increased, It partially changes the reflectance of the aforementioned information recording surface. 2 9 · For the disc recording method of item 17 in the scope of patent application, in which the aforementioned pits and holes are detected based on the returned light obtained by irradiating the light beam; Produce a result; generate a predetermined number of rows based on the detection result; scan the beam in a pit and / or hole corresponding to the detection result held in the memory means; based on the detection result The above-mentioned number series and the above-mentioned sub-data series temporarily increase the light quantity of the light beam and locally change the reflectance of the information recording surface. 30. The optical disc recording method according to item 17 of the scope of patent application, wherein the disc-shaped recording medium is irradiated with the first light beam and receives return light; the aforementioned pit or hole is detected according to the aforementioned light receiving result; The first light beam formed by the optical system goes backwards, and the second light beam is irradiated on the disc-shaped recording medium; according to the detection result and the aforementioned. Sub-data column, the light amount of the second light beam is temporarily increased and partially made The reflectance of the aforementioned information recording surface is changed. 31 · —A kind of optical disc, characterized by: ·. The pits and holes formed according to the length of the main data row are returned on the information recording surface to record the aforementioned main data row; And shape changes are recorded; the size of the paper sheet applies the Chinese National Standard (CNS) A4 specification (210X 297 mm) ---- ^ ------ Order ------ ^ (Please read the back first (Please note this page before filling in this page) -6-546640 A8 B8 C8 D8 夂, the scope of patent application changes the reflectance of the aforementioned information recording surface, and records the secondary data column. 3 2 · If the optical disc of item 31 in the scope of patent application, the reflectance change of the aforementioned information recording surface generated by the aforementioned sub data row, the reflectivity of the aforementioned information recording surface is 2% or less. 3 3 · If the optical disc of item 31 in the scope of patent application includes a plurality of the aforementioned pits and / or holes, return and record 1 bit of the aforementioned auxiliary data column. 3 4 · As for the optical disc of item 33 in the scope of patent application, in which 1 bit of the aforementioned auxiliary data column is staggered and recorded in at least 100 or more of the aforementioned pits. 0 5 · As in item 33 of the scope of patent application The optical disc, in which the reflectance change of the aforementioned information recording surface, is implemented in a plurality of the aforementioned hole portions, and the sub-data is described in the catalogue. 3 6 · If the optical disc of item 33 of the scope of patent application, the reflectance change of the aforementioned information recording surface is performed locally at a distance separated by the edge of the pit and / or hole above a predetermined length. . 3 7 · The optical disc according to item 36 of the scope of patent application, wherein the predetermined distance is the distance D shown in the formula: 1. 2 2 * λ D = ..... (3) 2 · ΝΑ Here NA is the number of openings of the optical system that reproduces the aforementioned main data column A is the beam wavelength suitable for the optical system. 38. For the optical disc of item 36 in the scope of patent application, the aforementioned predetermined distance is the shortest length among the aforementioned pits and holes. This paper size applies to China National Standard (CNS) A4 specification (210X297 mm) ----------- ^-(Please read the notes on the back of the department before filling out this page) Alignment-Ministry of Economy Printed by the Intellectual Property Bureau's Consumer Cooperatives 546640 A8 B8 C8 D8 VI. Application for Patent Scope 39. For example, if you apply for the optical disc of Item 33 of the Patent Scope, the aforementioned 畐 IJ data list is generated by following the aforementioned main data list It is recorded after being adjusted in series. 40. For the optical disc of item 39 in the scope of patent application, the aforementioned numbers are listed as M series. 4 1 · If the optical disc of item 31 in the scope of patent application, the aforesaid subsidiary data row is the identification data row for identifying the optical disc. 4 2 · If the disc of item 31 in the scope of patent application, the aforementioned main data row is the data row that has been coded; the aforementioned sub data row is the data row necessary to cancel the coding of the aforementioned main data row. 4 3 · If the disc of item 31 in the scope of patent application, the aforementioned subsidiary data row is the number of reproduction times of the aforementioned main data row. 4 4. For the optical disc of item 31 in the scope of patent application, the aforementioned subsidiary data is the number of times of copying of the aforementioned main data. ---------- ^ ------ Order ------ 0 (Please read the precautions on the back before filling out this page) Applicable Chinese National Standard (CNS) Eighty-fourth Secretary (210X297 Public Director) -8-