TWI238394B - Method and device for recording information - Google Patents

Abstract

An information recording device for recording information data into a plurality of recording areas of a writable disk by recording means under mutually different recording conditions. The device includes storage means for storing the information data to be recorded onto the disk. The device transfers the information data stored in the storage means to a buffer memory to save the data therein, sequentially retrieves the information data saved in the buffer memory, allows the recording means to record the retrieved information data onto the disk, and changes a recording condition of the recording means after a buffer under-run has occurred in the buffer memory.

Description

1238394 The invention, the eye-popping method, and the schematic diagram to explain the moon) attacking knife power (turning __ Ming: face-to-face field training technical content, [the technical field to which the invention belongs] invention field 5 The present invention is The invention relates to a method and a device for recording data by using a recording device. A recording area for recording borrowed data to a writable disc under mutually different recording conditions [Month VI] BACKGROUND OF THE INVENTION Currently, CD- R, CD-RW, DVD-R, state bribes,

Ram-like discs are known as informational writable discs. In addition, an information recording device, such as a disc recorder, which allows ordinary users to record arbitrary information data on such discs is already available. Since data is recorded on recordable discs by these information recording devices, pre-recorded discs having different recording characteristics are produced. This is caused by a difference in recording performance between information recording devices or an error in the characteristics of the disc itself. On the other hand, DVD player-like disc players used to play discs need to play pre-recorded discs with different recording characteristics. Therefore, 'is required by the manufacturer of a test disc-type disc player as a standard for evaluating the reproduction performance of a disc player. However, in order to make a test disc, a recording device such as a DVD writer must be used to record information into several recording areas under mutually different recording conditions. Therefore, there is a problem that the recording control of the recording device is not easy. [Summary of the Invention] 0 Continued pages (Please note and use the continuation page when the description page of the invention is insufficient.) 1238394 Description of the Invention 玖, Summary of the Invention Summary of the Invention Therefore, the object of the present invention is to provide a recording device for appropriately using Method and device for recording information by recording information data into several recording areas under mutually different recording conditions. 5 The present invention provides an information recording device for recording information data into a plurality of recording areas of a writable disc under mutually different recording conditions using a recording device. The device includes: a storage device for storing information data to be recorded on the disc; an information recording control device for transferring the information data stored in the storage device to a buffer memory 10俾 can store the information data therein, and then continuously retrieve the information data stored in the buffer memory, and allow the recording device to record the retrieved information data on the disc; and A recording condition changing device that changes a recording condition of the recording device after a buffer underrun has occurred in the buffer memory. The present invention provides an information recording method for recording information data into a plurality of recording areas of a writable disc under mutually different recording conditions using a recording device. The method includes the following steps: transferring the information data previously stored in the storage device to a buffer memory so that the information data can be stored therein; continuously retrieving the 20 information stored in the buffer memory Data; allows the recording device to record the retrieved information on the disc, and changes the recording conditions of the recording device after a buffer underrun has occurred in the buffer memory. Brief Description of the Drawings Figure 1 is a block 0 depicting the structure of the information recording device of the present invention. Continued pages (when the description page is insufficient, please note and use the continuation page) ; Figure 2 is a block diagram depicting the structure of the LD driver in the device of Figure 1; Figure 3 is a block diagram depicting the structure of an analog processing circuit; 5 Figure 4 is depicting a representation Figure 5 shows the waveform of the LPP component detected by the pre-pit detection circuit. Figure 5 is a diagram depicting each area on the recording surface of an optical disc. Figure 6 is a diagram depicting the first The flow chart of the operation of the device in the figure; 10 Figure 7 is a diagram depicting the recording conditions and target values of a DVD-R, Figure 8 is a diagram depicting the recording conditions and target values of a DVD-RW, FIG. 9 is a diagram showing the recording conditions and target values of a DVD-RW in FIG. 15; FIG. 10 is a flowchart specifically describing the recording operation in the flowchart in FIG. 6; and FIGS. 11A to 11C are for Describes the write pulse waveforms associated with recorded data on a DVD-R and A diagram of changes in power; 20 Figures 12A to 12D are diagrams illustrating the write pulse waveforms and changes in each power related to the recording data of a DVD-RW; Figure 13 is a diagram depicting FIG. 14 is a block diagram of another embodiment of the present invention; and FIG. 14 is a flowchart for describing the recording operation of the device of FIG. 13 (continued page)说明 Description of the invention Description of the invention Continued page c Implementation mode] Detailed description of the preferred embodiment The preferred embodiment of the present invention will be described below in conjunction with the drawings. 5 FIG. 1 depicts a method for recording information data. Recording device for optical discs like DVD-R or DVD-RW. This recording device has not only a θ recording function but also a reproduction function, and, as shown in FIG. 1, includes a detector 1, an analog processing circuit 2, a DVD decoder 3, and an LPP (front land). Land pre-pit) decoder 4, an LD (lightning 10 diode) driver 5, a strategy generating circuit 6, a DVD encoder 7, a buffer memory 8, a CPU 9, A SCSI (Small Computer System Interface) interface 10 and a system controller U. The components other than the system controller n constitute a DVD writer. As shown in FIG. 2, the detector is provided with a half-body laser device 21 for emitting 15 beams, and a four-point pH (four_SpHt) optics. As shown in FIG. 3, (Indicated by reference numeral 22), wherein the semiconductor laser device 21 emits a laser beam to an optical disc 13 rotationally driven by a spindle motor 12, and the detector 1 reflects the emitted laser beam The light beam band is guided to the quarter optical detector 22. The portion of the laser beam emitted from the semiconductor laser device 20 is provided to a front monitor 23 on the way to the optical disc 13. The quarter optical detector 22 has, as shown in FIG. 3, a photoelectric conversion device having four photoelectric conversion devices in four directions along the tangent line of the information recording track of the optical disc Π And on the 0th continuation page of the record (the invention description page is insufficient, please note and use the continuation page) 1238394 玖, the invention description invention description the continuation page of the light receiving surface 22a split in the radial direction perpendicular to the tangent line To 22d. Through the individual light receiving surfaces 22a to 22d, the photoelectric conversion device receives the reflected light from the information reading point of the optical disc 13, and converts the light intensity into individual electrical signals, which can be output to the analog processing 5 The circuit 2 serves as a receiving light signal Ra-Rd. The analog processing circuit 2 is provided with adders 31 to 33 and a pre-pit detection circuit 34. The adder 31 adds the received light signals Ra and Rd, and the adder 32 adds the received light signals Rt) and RC. In other words, the adder 31 adds the received light signals Ra and Rd obtained by the light received by the light receiving surfaces 22a and 22d of the quarter optical detector 10 detector 22, respectively, and outputs an The received light rays Λ are Ra + d. δHai normal state 32 adds the received light signals Rb and Rc obtained by the light received by the light receiving surfaces 22b and 22c of the quarter optical optical detector 22, respectively, to output an added received light. Signal 15 Rb + C. The adder 33 adds the individual output signals Ra + d and Rb + C from the adders 31 and 32. The output signal of the adder 33 is a read signal, that is, an RF signal, and is supplied to the dvd decoder 3. The DVD decoder 3 converts the RF signal into a digital signal 20, and then demodulates the digital signal by decompression, and can output a reproduced signal. The pre-pit detection circuit 34 calculates the difference between the individual output signals Ra + d * Rb + c of the adders 31 and 32, and can generate a radial push-pull signal PP, as shown in FIG. 4 As shown in the figure below, and then by using a critical voltage of 0 (indicating and using the continuation page when issuing the page), the 3838 pressure is used to detect the terrestrial implementation formed on the optical disc 13. The land D on the track is set to a pit (LPP) to convert the radial push-pull signal pp into a binary flood signal as a pre-pit detection signal ρρ〇, which is supplied to the: 忡 Decode state 4 . The LPP decoder 4 outputs the address of the position where the detector i responds to the 5 ° pit detection signal Ppd to irradiate the optical disc 13 with a laser beam to a common bus 14 as data. The DVD decoder 3, the LPP decoder 4, the DVD encoder 7, the CPU 9, and the SCSI interface 10 are connected to the bus 14. The SCSI interface 10 is an interface for connecting the system controller 11 and the violation # 14. The system controller ^ is, for example, a personal computer, and is readable to be recorded on an optical disc 测 as a shadow test data | data is stored in an appropriate slot format thereon Internal hard disk (not shown). When data is recorded on the optical disc U, the system controller U supplies a record start command to the CPU 9 via the SCSI interface 10 and the bus 15 I4, and via the sesi interface 10, the bus Row 14 and the DVD encoder 7 read the image data from the hard disk, transfer it to the buffer memory 8 and store it therein.

When recording data, the DVD encoder 7 sequentially reads the stored data from the buffer memory 20, encodes the data, and generates recording data, and supplies it to the strategy generating circuit 6. The strategy generating circuit 6 generates a writing pulse and an erasing pulse according to each bit of the recorded data through code conversion of the recorded data, so as to form a mark on the optical disc U. The code conversion, as described later, provides corresponding to the recorded data, and it is widely 0 Jia Jia negative (when the invention description page is insufficient, please note and use the continuation page) 1238394 invention description continued page 玖, invention description Or "0" bit conversion. When the optical disc 13 is a DVD-RW, write pulses and erase pulses are generated, while in the case of DVD-R, only write pulses are generated. Each pulse train generated by the strategy generating circuit 6 is supplied to the LD driver 5 in turn. 5 The LD driver 5 is a circuit for selectively supplying a recording current, a bias current, an erasing current, and a regenerative current to the semiconductor laser device 21. The LD driver 5, as shown in Fig. 2, is provided with an interface 41, D / A converters 42 to 44, current sources 45 to 47, switches 48 to 50, a buffer amplifier 51, and an S / Η (Sampling-and-holding 10) circuit 52, an APC (Automatic Power Controller) 53, and a V / I converter 54. The interface circuit 41 selectively selects digital data output by the CPU 9. Power level information is supplied to these D / A converters 42 to 44. The individual D / A converters 42 to 44 convert the supplied digital data 15 to analog values and supply them to the associated current sources 45 to 47. These current sources 45 to 47 are capable of outputting a current having a level specified at an individual analog value. The current source 45 is for the output of the bias current, and its output terminal is connected to the switch 48. The switch 48 is a transfer switch, and selectively connects the output of the current source 45 or the 20 output of the V / I converter 54 to the anode of the semiconductor laser device 21. When the output of the current source 45 is selected by the switch 48, the bias current, which is the output current of the current source 45, is supplied to the semiconductor laser device 21. When the output system of the V / I converter 54 is selected, the regenerative current, which is the output current of the V / I converter 54, is supplied to the semiconductor laser device. When not enough, please note and use the continuation sheet) 1238394 发明, invention description 10 15 set 21. The current source 46 is for the output of the erase current, and the switch 49 is connected to the output of the current source 46. The switch 49 is a ON / OFF switch, and in the ON-state, it connects the output terminal of the current source 46 to the anode of the semiconductor laser device 21 and transfers the supply of the erasing current to the semiconductor Lasing device 21. The current source 47 is for the output of the recording current, and the switch 50 is connected to the output terminal of the current source 47. The switch 50 is an ON / OFF switch, and in the ON-state, the output terminal of the current source 47 is connected to the anode of the semiconductor laser device 21, and the recording current is transferred to the semiconductor laser device 21. In this structure, the cathode system of the semiconductor laser device 21 is grounded. As described above, the front monitor 23 receives a part of the laser beam emitted from the semiconductor laser device 21, and generates a front monitor for indicating an electrical signal corresponding to the level of the received light intensity Device signal. The S / Η circuit 52 is connected to the output terminal of the front monitor 23 via the buffer amplifier 51. The S / Η circuit 52 samples at specific time intervals and holds the front monitor signal amplified by the buffer amplifier 51. The holding signal of the S / Η circuit 52 is supplied to the APC 53. The APC 53 generates a voltage signal to the V / I converter 54 so that the level of the monitor signal becomes the reference level before being held in the S / H circuit 52. The V / I converter 54 outputs a regenerative current corresponding to a voltage signal supplied from the APC 53. In order to write data to or read data from the optical disc 13, a servo circuit 15 for servo control like tracking servo, focus servo, stage servo, or tilt servo is used. Set to the 0-continuation page (if the description page of the invention is insufficient, please note and use the continued page) 20 1238394 Description page of the invention description page, invention description recording device. The servo circuit 15 controls a position at which the detector 1 writes data to the disc 13 in response to a command from the CPU 9.

The optical disc 13, as shown in FIG. 5, has a PCA (power measurement area), an RMA (record management area), a lead-in area, and a data area in this order from the inner edge 5 to the outer edge. , And the data structure of an export area. The PCA and RMA are called an R information area, in which the PCA is an area for attempting to write data when determining the recording power of a laser beam, and the RMA is an area for Area for writing management data RMD related to record 10 operation. Next, the operation of the information recording device constructed as described above will be described with respect to the case where the test data is recorded on the optical disc 13.

First, as shown in Fig. 6, the system controller 11 sets recording conditions (step S1). These recording conditions are assigned to several recording areas (recording area 1, recording area 2, ..., recording area MAe), and the data area of the optical disc 13 has been divided into these recording areas. If the optical disc 13 is a DVD-R, as shown in FIG. 7, an address defining each of the plurality of recording areas, an elapsed time corresponding to the address, an The recording power and a bias power are set to 20 recording bars. The ratio of the recording power and the bias power is the same for each of the plurality of recording areas. If the optical disc 13 is a DVD-RW, an address defining each of the plurality of recording areas, an elapsed time corresponding to the address, a recording power, an erasing power, and a bias voltage The power system is set as a recording condition. The recording power and the erasure 0 continuation page (when the invention description page is insufficient, please note and use the continuation page) 14 1238394 Invention description continuation page, the ratio of invention description power is for each of the several recording areas It is the same for both. If the optical disc 13 is a DVD-RW, the bias power is the same for all the recording areas in the case of FIG. However, as shown in FIG. 9, a different bias power can be assigned to each of the plurality of 5 recording areas. In the case of FIG. 9, the ratio of the recording power, the erasing power, and the bias power is the same for each of the plurality of recording areas. In each of Figures 7 to 9, a jitter and a PI error have values that vary depending on the recording power and the bias power and the DVD-RW erasing power. 10 These recording conditions are set in response to user input using the keyboard, or by manual selection of data from pre-specified recording conditions. Here, the recording conditions are different for each of the plurality of recording areas. After these recording conditions have been set, the operation for starting recording is input by the keyboard or mouse as described above (step S2), and then the system controller 11 starts the recording operation (step S3). In the recording operation, as shown in FIG. 10, the recording area MA is set to 1 (step S21), and then the recording conditions of the recording area MA are via the SCSI interface 10 and the bus 14 It is notified 20 to the CPU 9 (step S22). The recording area MA is one of the plurality of recording areas described above in the order of addresses. The system controller 11 reads the image data as the information data to be recorded from the hard disk and transfers the image data to the buffer memory via the SCSI interface 10, the bus 14, and the DVD encoder 7. Body 0 continuation page (if the invention description page is insufficient, please note and use the continuation page) 1238394 Invention description 玖, Invention description 8 (step S23). This transfer of the image data to the buffer memory 8 is performed with blocks as early bits' and the buffer memory 8 holds the transferred image data. Although the amount of data held in the buffer memory 8 is reduced when the image data is read by the DVD encoder 7 from the buffer memory 5 8, the image data from the system controller 11 is in step The system in S23 is appropriately transferred, and it continues until the data is completely written in a recording area. After step S23 is performed, the system controller 11 supplies a write command to the CPU 10 9 via the SCSI interface 10 and the bus 14 (step S24). The CPU 9 starts the operation of the DVD writer in response to the write command. In particular, according to the address information of the writing position on the optical disc 13 obtained by the detector 1 from the LPP decoder 4 via the bus 14, the writing position of the detector 1 is changed Move to the recording area MA of 15 data areas. Then, power level information corresponding to the recording power, the erasing power, and the bias power corresponding to the recording area MA is output to the LD driver 5. This is the case where the optical disc 13 is a rewritable optical disc. Alternatively, when the optical disc Π is a write-once optical disc, power level information corresponding to the recording power and the bias voltage 20 power of the recording area M A is output to the LD drive 5, and The index of the erasing power is OmW. In the LD driver 5, the output bias current value of the current source 45, the output erase current value of the current source 46, and the output recording current value of the current source 47 are specified based on the power level information. . The transfer switch 48 is switched to the side 0 of the current source 45 (continued when the description page is insufficient, please note and use the continued page) 1238394 Description of the invention $ 1 Stomach, invention description 'wrong caused the bias A piezo current flows from the current source 45 to the semiconductor laser device 21.

The CPU 9 also informs the DVD encoder 7 to read the image data. The DVD encoder 7 sequentially reads and encodes the image data held in the buffer memory 85, and then supplies the final data to the strategy generation circuit 6 as a recording material. The Lello generation circuit 6 converts the recording material into a code and generates erase and write pulses. The switch 49 is opened in response to the erase pulse, and the erase current from the current source 46 is added to the bias current 俾 and flows to the semiconductor laser device 21. The switch 50 is turned on in response to the write pulse, and a recording current from the current source 47 is added to the bias current and flows to the semiconductor laser device 21. In this way, a laser beam for recording is emitted from the semiconductor laser device 21, and data written on the optical disc 13 is obtained.

The system controller 11 reads, via the bus 14 and the SCSI interface 10 15, the address information of the writing position on the optical disc 13 due to the detector 1 obtained from the LPP decoder (step S25 ), And it is determined whether the address information indicates the last address of the recording area MA (step S26). If the read address information does not indicate the last address of the recording area MA, the process returns to step S23, where it repeats the 20 operation. If the read data indicates the last address of the recording area MA, the process waits for a time sufficient to cause a buffer underrun to occur (step S27). The buffer underload operation is performed such that an image data held in the buffer memory 8 is read by the DVD encoder 7 and a data entry is made without holding data in the buffer memory 8 0 Continued pages (If the description page is insufficient, please note and use the continuation page) 17 1238394 玖 The description of the invention description, the state under which the continuation page is executed. Since it has been determined in step S26 that the read address poor indicates the last address of the recording area MA, the waiting time for causing a buffer to run underrun is, for example, a period corresponding to the last bit The time when the data of the address's tribute is written. Since the execution of the next step S28 is delayed by this time, the writing of the image data to the last address in the current recording area MA is surely completed under its corresponding recording conditions. In other words, the recording condition is prevented from being changed in the last address of the current recording area] VIA. After executing step S27, the system controller u determines whether the recording area 10 domain MA is the last recording area MAe (step S28). If MA is not equal to MAe, then it is added to MA to access the next recording area MA (step S29), the process proceeds to step S22, and the operation is repeated from step S22. If MA is equal to MAe, it means that the image data has been written into the recording areas. 15 Consider the case where the optical disc 13 is a write-once disc for a DVD-R, and, for example, the recorded data contains 8T (T is a unit bit length), as shown in FIG. 11A. In this case, the strategy generating circuit 6 converts the recorded data of 忒 θ into a write pulse train. As shown in FIG. 11B, 俾 can generate a mark of 8T. When no write pulse is generated, a bias current 20 flows from the current source 45 to the semiconductor laser device 21. The power of the laser beam emitted by the semiconductor laser device 21 according to the bias current, that is, the 'bias power' is at a power level higher than the zero level by Pb, as shown in Fig. 11C. When the write pulse is generated, the recording current from the current source 47 is added to the bias current and flows to the semiconducting 0 Continued page (When the description page of the invention is insufficient, please note and use the continued page ) 1238394

发明, description of the invention The power of the laser beam emitted by the semiconductor laser device 21 according to the total current of the bias current of the recording current, that is, the recording power is at a level higher than the zero level p0 (p0, power level As shown in Figure 11C. 13 is a rewritable disc for DVD-RW. If the optical disc contains 8 D (T is a unit of bit length ', the strategy generating circuit 6 records the 12B. As shown in the figure, and a write pulse. The erase pulses are just after the write

Then, when the recorded data, for example, degrees), as shown in Figure 12A > the material is converted into erase pulses, as in the first punch, as shown in Figure 12C 10 15 20 pulse train is The produced difference is produced. When neither the erase pulse nor the write pulse is generated, the bias current from the current source 45 flows to the semiconductor field device 21. 4 The laser emitted by the semiconductor laser device 21 according to the bias current Beam power, βρ, bias power, is at a ratio of zero

The power level of the quasi-high Pb is shown in Fig. 12D. When only the erasing pulse is generated, the erasing current from the current source 46 is added to the bias current and can flow to the semiconductor laser device 21. The power of the laser beam emitted by the semiconductor laser device 21 according to the erasing current and the bias current, that is, the erasing power, is at a power level pe (pe> pb) higher than the zero level, As shown in Figure 12o. When the write pulse is generated, a recording current from the current source 47 is added to the bias current and can flow to the semiconductor laser device 2: [. The power of the laser beam emitted by the semiconductor laser device 21 according to the sibling current and the bias current, that is, the recording power, is at a power level p0 (p0> Pe) higher than the zero level. Standard, as shown in Figure 12D. 0 Continued pages (When the invention description page is insufficient, please note and use the continuation page) 19, 1238394

发明 Description of invention

10 15 20 #Data has been completely written to the recording area controllers η via the SCSI interface 10 and the bus 14 to notify the CPU 9 to change the corresponding optical disc made by the detector i The individual power levels of the recording power, the erasing power, and the bias power at the current writer position on 13 are optimized (step S4). The CPU 9 series outputs the optimized power level information to the LD drive m in response to the changed command. The optimized recording power, erasing power, and bias power correspond to those in the optical system. Each position in the radial direction of the disc 13 is previously specified. In the LD driver 5, the output bias current value of the current source 45, the output erase current value of the current source 46, and the output recording current value of the current source 47 are specified based on the power level information. The system controller 11 notifies the CPU 9 to write the lead-out information to the lead-out area of the optical disc 13 via the SCSI interface 10 and the bus 14 (step S5). The CPU 9 puts the detector! The writing position to the lead-out area of the optical disc 13, and notify the DVD encoder 7 to write

Enter the export information. The DVD encoder 7 provides the recording data corresponding to the lead-out information to the strategy generating circuit 6, and the strategy generating circuit 6 converts the recording data into a code to generate erase and write pulses, thereby the lead-out information It is written in the lead-out area of the optical disc 13. After the writing of the extracted information is completed, the system controller u notifies the CPU 9 via the SCSI interface 10 and the bus 14 to change the individual power level to the innermost periphery corresponding to the optical disc 13 The recording power, erasing power 'and bias power of the position are optimized (step s6). The CPU 9 series responds to the change command to optimize the power 0. Continued pages (when the invention description page is insufficient, please note and use the continuation page) 20 1238394 Invention description _ stomach 玖, invention description bit Quasi information is output to this LD driver. Then, the system controller 11 notifies the CPU 9 to write the recording management information RMD to the RMA of the optical disc 13 via the SCSI interface 10 and the bus 14 (step S7). The CPU 9 moves the writing position of the detector 1 to the RMA of the optical disc 13 5 and notifies the DVD encoder 7 to write the recording management information of the disc. The DVD encoder 7 provides the recording data corresponding to the recording management information to the policy generating circuit 6. The policy generating circuit 6 converts the recording data into a code to generate erase and write pulses, and accordingly, the The recording management information RMD is an RMA written on the optical disc 13. 10 After the writing operation of the record management information RMD is completed, the system controller 11 notifies the CPU 9 via the SCSI interface 10 and the bus 14 to write introduction information (completion information) to the optical disc 13 The area is introduced (step S8). The CPU 9 moves the writing position of the detector 1 to the lead-in area of the optical disc 13, and notifies the DVD encoder 7 to write 15 the lead-in information of the optical disc 13. The DVD encoder 7 provides the recording data corresponding to the introduction information to the strategy generating circuit 6. The strategy generating circuit 6 converts the recording data into a code to generate erase and write pulses, and accordingly, the introduction Information is written in the lead-in area of the optical disc 13. 20 The writing of the record management information RMD and the incoming information is final. As the data of the record management information RMD, a driver supplier ID, a serial number, a model, a strategy code, a recording power, a time stamp, and the like are included. As the data of the introduction information, disc information, supplier information, writing strategy information, and the like are included. 0 Continued pages (If the description page of the invention is insufficient, please note and use the continuation page) 1238394 Rose, invention description After completing the introduction of the introduction information, the system controller ^ strong the coffee 9 stop the DVD The operation of the writing device (step ⑼. With two operations, it is completed on the optical disc 13 as a test disc. In the recording of data to several fields of τπ 丄, 丄 Μ 枓, & After the recording area, ^ is set back to the optimized recording power, erasure rate, rate, and bias power corresponding to the current writer position of the detector K. The optical disc 13 is prevented from becoming non-reproducible Test disc. 10 15 20 is provided in the command line S4 and ㈣% to change the individual T standard, as in the step, if the optical disc 13 ^ 胄-less than M disc 'the CPU 9 The optimized power level corresponding to the recording power and the bias power is rolled out. The LD driver 5 has an index of the erasing power of 0. Figure 13 depicts another aspect of the present invention- The information recording device of the embodiment. 13 The information recording device is set in the DVD encoder The 7 series is used to measure the buffer memory of the buffer under running operation. The other components are the same as those of the information recording in Fig. 1. The information recording device in Fig. 13 is the same. In step 6, the recording operation in step 6 is performed as shown in FIG. 14. That is, if the processing decides that the address information obtained in step S26 indicates the recording area If the post address of the MA is taken, the system controller u reads the detection status of the buffer underrun detector 7a via the encoder :, the bus 14 and the interface 10, and can determine one. Check whether a person's on-board operation has been detected (step S27a). If a buffer is under-loaded, continue to 0 pages (if the sunscreen is insufficient, please note and use 顚) Detected detection 22 1238394 发明 Description of the invention =: The process proceeds to step S28. The recording operation is the same as that shown in Fig. 10. In the embodiment shown in Figs. 13 and 14, the process Execute the next step in which the buffer underrun is the time when the test was taken in step C S28. This ensures that the video asset can be fully written to the last address of the current recording area ma under the recording conditions associated with it. On the other hand, when writing data, the DVD writer performs 〇 Dali processing or complex processing like temperature compensation of laser power may happen that the DVD writer does not respond to changes in recording conditions like recording power. Then, in the foregoing embodiment In each of these cases, the controller waits in step S27 for a period sufficient to cause—the buffer underruns are detected—or in step S27a—the buffer underruns are detected. This allows the situation to be expected, such as video Data-like, transferred to the buffer memory 8 can be completely written before the 4 recording conditions are changed. This makes it possible for the DVD writer to perform processing under reduced load when writing data, thereby ensuring that the DVD writer responds to changes in recording conditions. Although the recording power and the bias power of the laser beam in each recording area, or the recording power, the erasing power, and the bias power were previously set as the recording conditions in Embodiment 20, the present invention is not affected by Limited to this. As a recording condition, a pulse width of a write pulse output from the strategy generating circuit 6 in response to a command from the CPU 9 can also be used. In addition, a vertical line radiated by a laser beam and a direction of an optical axis of the laser beam formed at a position on a recording surface of the optical disc 13 are not sufficient. Brain, please note and make the page of the brain) 1238394 发明, invention description 1 issue Oh the inclination angle between continuation pages can also be used. In addition, an offset value of the focus servo circuit or an offset value of the tracking servo circuit can be used to set the recording conditions. As described above, the present invention makes it possible to appropriately record information materials into a plurality of recording areas under mutually different recording conditions by using a recording device. In particular, it is ensured that the information material is recorded to each recording area to its last address under the recording conditions associated with it. Brief description of L-scheme 3 Fig. 1 is a block diagram 10 for describing the structure of the information recording device of the present invention; Fig. 2 is a block diagram for depicting the structure of the LD driver in the device of Fig. 1; Fig. 3 It is a block diagram for describing the structure of an analog processing circuit; FIG. 4 is a diagram for describing a waveform of an LPP component detected by a pre-pit detection circuit; FIG. 5 is for depicting a An illustration of each area on the recording surface of an optical disc; Figure 6 is a flowchart depicting the operation of the device of Figure 1; Figure 7 is a diagram depicting the recording conditions and target values of a DVD-R Figure 20; Figure 8 is a diagram depicting the recording conditions and target values of a DVD-RW; Figure 9 is a diagram depicting the recording conditions and target values of a DVD-RW; 0 Continued pages (invention When the description page is insufficient, please note and use the continuation page) 1238394 Description of the Invention Continued 玖, Description of the Invention Figure 10 is a flowchart specifically for the recording operation depicted in the flowchart of Figure 6; Figures 11A to 11C It is used to describe the writing pulse waveform and Diagrams of changes in each power; 5 Figures 12A to 12D are diagrams for describing the write pulse waveforms and the changes in each power related to the recording data of a DVD-RW;

FIG. 13 is a block diagram depicting another embodiment of the present invention; and FIG. 14 is a flowchart depicting the recording operation of the device of FIG. 13 [The main component representative symbol table of the diagram]

1 *… detector 22… quaternary optical detector 2… analog processing circuit 23… front monitor 3 *… DVD receiver 22a… light receiving surface / |… LPP decoder 22b… light receiving surface 5,… LD driver 22c ... light receiving surface 6 'strategy generating circuit 22d > light and line receiving surface 7 * ... DVD encoder Ra receives light signal 8, Buffer memory Rtr ... receives light signal ... CPU rc receives light signal 10 … SCSI interface Rcl… Receive light signal 11, System controller 31, Adder 12… Spindle motor 32… Adder 13, Optical disc 33… Adder 21… Semiconductor laser device 34… Front pit detection See the next page of the circuit (when the invention description page is insufficient, please note and make two continuation pages: 25 1238394 发明, invention description

PPD, pre-pit detection signal 49… switch Τ threshold voltage 50… switch 14… common bus 5L… buffer amplifier 41… interface 52 *… S / Η circuit 42… D / A converter 53 ^… APC 43 ... D / A converter 54 '... V / I converter 44, D / A converter 15 * ... servo circuit 45 ... current source 7a, detector 46 * current source S1 ~ S9 step 47 ... current source S21 ~ S29 Step 48 ... Switch

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Claims (1)

1238394 Patent application scope 1. An information recording device for recording information to a plurality of recording areas of a writable disc by a recording device under mutually different recording conditions, including: 5 storage devices of the poor materials recorded on the disc; Information recording control device, which is used to transfer the information data stored in the storage device to a buffer memory, the information data can be stored therein, and then continuously retrieved and stored in the buffer memory The recorded information and allows the recording device to record the retrieved information and data on the disc; and a recording condition changing device, the recording condition changing device is used for a buffer underrun that has occurred in the buffer The recording conditions of the recording device are changed after the memory of the device. 2. The information recording device described in item 1 of the scope of the patent application, where 15 when the disc is a write once optical disc, The recording conditions are set by indicating the recording power and bias power of the laser beam of each of the plurality of recording areas, and when the disc is a rewritable optical disc, the recording device The recording conditions are set by indicating the recording power, erasing work rate, and bias power of the laser beam of each of the plurality of recording areas. 3. The information recording device according to item 1 of the scope of patent application, wherein the recording condition changing device detects a sufficient amount to cause the buffer to be underrun after detecting the last address of one of the plurality of recording areas. The elapsed time of the operation changes the recording conditions of the recording device. 0 Continued pages (please note and use the continuation pages when the patent application page is not enough) η 1238394 The last page of the patent application scope, the patent application scope 4. The information recording device described in item 1 of the patent application scope, The recording condition changing device has a detector device for detecting the underrun of the buffer, and responds to the detection device after detecting the last address of one of the plurality of recording areas. The detection of the buffer running under 5 loads is made to change the recording conditions of the recording device. 5. — An information recording method for using a recording device to record information data into several recording areas of a writable disc under mutually different recording conditions, including the following steps: Pre-stored in a storage device The information data is transferred to a buffer memory, which can store the information data therein; continuously retrieving the information data stored in the buffer memory allows the recording device to record the retrieved information data in the Disc: and 15 change the recording conditions of the recording device after a buffer underrun has occurred in the buffer memory. 28