WO2008047516A1 - Signal processing device, optical display device, recording/reproducing device, integrated circuit, and signal processing method - Google Patents

Signal processing device, optical display device, recording/reproducing device, integrated circuit, and signal processing method Download PDF

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Publication number
WO2008047516A1
WO2008047516A1 PCT/JP2007/067423 JP2007067423W WO2008047516A1 WO 2008047516 A1 WO2008047516 A1 WO 2008047516A1 JP 2007067423 W JP2007067423 W JP 2007067423W WO 2008047516 A1 WO2008047516 A1 WO 2008047516A1
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WO
WIPO (PCT)
Prior art keywords
recording
power
signal processing
optical disc
recording quality
Prior art date
Application number
PCT/JP2007/067423
Other languages
French (fr)
Japanese (ja)
Inventor
Kazuhiro Murakami
Masamitsu Mimura
Satoshi Banjo
Keisuke Sasaki
Akihiro Hatsusegawa
Original Assignee
Panasonic Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Panasonic Corporation filed Critical Panasonic Corporation
Publication of WO2008047516A1 publication Critical patent/WO2008047516A1/en

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Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/125—Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
    • G11B7/126—Circuits, methods or arrangements for laser control or stabilisation
    • G11B7/1267—Power calibration
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G11B7/0045—Recording
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G11B7/006—Overwriting
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B7/0945—Methods for initialising servos, start-up sequences

Definitions

  • Signal processing apparatus optical disc apparatus, recording / reproducing apparatus, integrated circuit, and signal processing method
  • the present invention relates to a signal processing device that performs signal processing related to data recording on an optical disc, an optical disc device, a recording / reproducing device, an integrated circuit, and a signal processing method, and is represented by DVD-RW, DVD + RW, and the like.
  • the present invention relates to a technique for optimizing the erasure rate during recording on a rewritable disc.
  • erasing power OPC Optimum Power Control
  • S6001 recording power and erasing power are acquired in (S6001).
  • the recording power and erasing power are fixed values recommended by the disk manufacturer.
  • S6002 the base recording is performed using the recording power and the erasing power obtained in (S6001).
  • S6003 the erasing power is set to the sector on the area on the optical disk where the base recording is performed.
  • Overwrite erasure hereinafter referred to as “stair erasure” is performed step by step, and the optimum erasure power is determined based on the degree of modulation of each sector in (S6004).
  • step recording is performed while changing the recording power step by step for each sector, and the optimum recording power is obtained.
  • the erase power at this time the optimum erase power determined in (S6 004) is used.
  • Patent Document 1 JP-A-2005-122793
  • an object of the present invention is to make it possible to correctly obtain the optimum erasing power by erasing power OPC even when data is actually overwritten in a data area.
  • the present invention provides signal processing for determining an optimum erasing power in an optical disc apparatus, the step of causing an optical pickup to irradiate a recording quality acquisition position in a data area of the optical disc.
  • (b) calculating the recording quality at the recording quality acquisition position from ⁇ and the output signal of the optical pickup at the step ⁇ , and based on the recording quality at the recording quality acquisition position,
  • a pre-processing including a step (C) of calculating a base recording power for performing base recording in the test writing area, and then the base recording is performed in the test writing area by the base recording power.
  • the optical pickup is controlled, and the area where the background recording is performed is used for calculating the optimum erasing power.
  • the recording quality of the trial writing area is set as the recording quality of the data area.
  • the base recording power to be close is calculated, even if the data area has already been recorded, the recording quality of the test writing area is close to the recording quality of the data area by the base recording. Become. Then, the optimum erasing power can be correctly calculated by using this test writing area having a recording quality close to the recording quality of the data area. Therefore, even when the data area is overwritten, the optimum erase power can be correctly obtained by the erase power OPC.
  • the base recording is performed in the trial writing area with the base recording power calculated based on the recording quality at the recording quality acquisition position in the data area, the data area is already recorded. Even if it is a mistake, The recording quality can be close to the recording quality of the data area. Therefore, even when overwriting the data area, it is possible to obtain the optimum erasing power correctly by erasing power OPC.
  • FIG. 1 is a block diagram showing a configuration of an optical disc apparatus according to Embodiment 1 of the present invention.
  • FIG. 2 is a diagram showing an equation for calculating the degree of modulation.
  • FIG. 3 is a graph showing the waveform of the erasing power that changes in a stepwise manner.
  • FIG. 4 is an explanatory diagram showing an area of the optical disc 140.
  • FIG. 5 is a flowchart showing the operation of the optical disc apparatus.
  • FIG. 6 is a flowchart showing the operation of the optical disc apparatus.
  • FIG. 7 is a graph showing the laser power waveform during base recording.
  • FIG. 8 is a flowchart showing the operation of the optical disk device according to the second embodiment of the present invention.
  • FIG. 9 is an explanatory diagram showing the profiled modulation degree.
  • FIG. 10 is a graph showing the relationship between the degree of modulation and recording power.
  • FIG. 11 is a flowchart showing an operation of the optical disc device according to the third embodiment of the present invention.
  • FIG. 12 is a block diagram showing a configuration of a recording / reproducing apparatus according to Embodiment 4 of the present invention.
  • FIG. 13 is a block diagram showing a configuration of a recording / reproducing apparatus according to Embodiment 5 of the present invention.
  • FIG. 14 is a block diagram showing a configuration of a recording / reproducing apparatus according to Embodiment 6 of the present invention.
  • FIG. 15 is a flowchart showing the operation of the recording / reproducing apparatus according to Embodiment 6 of the present invention.
  • FIG. 16 is a block diagram showing a configuration of a recording / reproducing device according to Embodiment 7 of the present invention.
  • FIG. 17 is a block diagram showing a configuration of a recording / reproducing apparatus according to Embodiment 8 of the present invention.
  • FIG. 18 is a diagram showing a configuration of a recording / reproducing apparatus according to Embodiment 9 of the present invention.
  • FIG. 19 is a flowchart showing a conventional erase power OPC process
  • the optical disc apparatus includes an optical pickup 100, a signal processing device 110, and a motor 130.
  • the optical pickup 100 includes a laser diode (LD) 101 and a light receiving element 102.
  • LD laser diode
  • the LD 101 emits laser light to the optical disc 140.
  • the light receiving element 102 includes a photo detector and a front light photo detector.
  • the photo detector receives the reflected light reflected from the optical disk 140, and the front photo detector receives the laser beam itself that is the output of the LD 101.
  • the signal processing device 110 includes an RF signal detection unit 111, an unrecorded / recording discrimination unit 112, a modulation degree calculation unit 113, a system controller 114, a storage unit (relational expression storage unit) 115, A terrestrial recording power calculating means 116, an optimum recording power calculating means 117, a stair emission processing means 118, a laser driving driver 119, and a laser power detecting means 120 are provided.
  • the signal processing device 110 is configured by an integrated circuit.
  • the RF signal detection means 111 and the modulation degree calculation means 113 constitute a recording quality acquisition means 121.
  • the RF signal detection unit 111 detects (extracts) an RF signal (RF signal component) from the electrical signal photoelectrically converted by the light receiving element 102 of the optical pickup 100.
  • the unrecorded / record discriminating unit 112 discriminates whether the optical disc 140 has been recorded or not recorded based on the RF signal detected by the RF signal detecting unit 111.
  • Modulation degree calculation means 113 calculates a modulation degree (recording quality index) derived from the equation shown in FIG. 2 based on the RF signal detected by RF signal detection means 111.
  • RFpeak indicates the peak voltage of the RF signal
  • RFbottom indicates the bottom voltage of the RF signal.
  • the system controller 114 performs an operation using the relational expression based on the modulation degree calculated by the modulation degree calculation means 113 and controls each means.
  • the storage unit 115 stores the modulation factor calculated by the modulation factor calculation unit 113, the modulation factor / recording power relational expression (recording quality / recording power relational expression) obtained in advance through experiments or the like.
  • the base recording power calculation unit 116 calculates (determines) recording power and erasing power based on the modulation degree calculated by the modulation degree calculation unit 113. These values are used for base recording.
  • the optimum recording power calculation unit 117 calculates (determines) the optimum recording power and the optimum erasing power based on the modulation degree calculated by the modulation degree calculation unit 113.
  • the calculated optimum recording power and optimum erasing power are used for data recording in the data area.
  • the staircase light emission processing means 118 outputs a recording power value and an erasing power value. As shown in Fig. 3, the erasing power changes stepwise. The recording power also changes in a stepped manner, similar to the erasing power.
  • the laser drive driver 119 drives the LD 101 of the optical pickup 100 based on the values calculated or output by the base recording power calculation means 116, the optimum recording power calculation means 117, and the staircase light emission processing means 118. Control the current.
  • the laser power detection means 120 detects the laser power value of the laser light received by the light receiving element 102 of the optical pickup 100.
  • the motor 130 moves the optical pickup 100 to an area on the optical disc 140 designated by the system controller 114.
  • the optical disc 140 includes a disc management area 141, a test writing area 142, and a data area 143.
  • (S1001) System Controller 114 Force By controlling the motor 130, the optical pickup 100 is used as an area for actually recording data in the data area 143 on the optical disc 140 (hereinafter referred to as “target recording area”). Move. Then, the RF signal detecting means 111 detects an RF signal component from the electric signal obtained by photoelectrically converting the laser light reflected from the target recording area, and the unrecorded'recording discriminating means 112 is based on the detected signal. Then, it is determined whether the target recording area is recorded or unrecorded. If the target recording area is not recorded, the process proceeds to (S1002). If the target recording area is recorded, the process proceeds to (S1003).
  • the optical disc apparatus reads optical disc manufacturer recommended power information recorded in the disc management area 141 on the inner periphery of the optical disc.
  • This optical disc manufacturer's recommended performance information includes optical disc manufacturer's recommended recording power and erasing power (recommended power).
  • the system controller 114 sets these powers recommended by the optical disc manufacturer as the base recording power.
  • the optical disc apparatus measures the degree of modulation in the target recording area.
  • the base recording power calculation means 116 uses the modulation power / recording power relational expression stored in the storage means 115 in advance to calculate the recording power corresponding to the modulation power measured in (S1003). calculate. Also, the erasing power is calculated based on the calculated recording power. The erasing power is calculated so that the erasing power and the recording power have a predetermined ratio. The system controller 114 then stores the calculated recording power and erasing power in the base memory. Set as recording power.
  • the recording start position is irradiated with light, and the reflected light from the optical disk 140 is received by the light receiving element 102, and an electric signal (output signal) ). Then, the RF signal detection unit 111 detects an RF signal from the converted electric signal, and the modulation degree calculation unit 113 calculates the modulation degree based on the detected RF signal.
  • the calculated modulation degree is the modulation position at the light irradiation position by the optical pickup 100, that is, the recording start position of the target recording area.
  • the storage unit 115 stores the modulation degree calculated in (S2002).
  • System controller 114 force Reads from the storage means 115 the modulation degree / recording power relational expression obtained in advance by experiments or the like.
  • the base recording power calculation means 116 calculates the recording power and the erasing power corresponding to the modulation degree read in (S2005) by the modulation degree / recording power relational expression read in (S2004). calculate. Then, the system controller 114 sets the calculated recording power and erasing power as the base recording power.
  • the modulation degree'recording power relational expression indicates the relationship between the modulation degree and the recording power, and is obtained by measurement using a reference disk in advance and stored in the storage means 115.
  • the modulation degree of the trial writing area 142 is equal to the modulation degree calculated in (S2002). Be the same.
  • the background recording power calculation means 116 uses this modulation degree / recording power relational expression to calculate the modulation degree of the trial writing area 142 (S200). Calculate the recording power for base recording suitable for the same modulation factor calculated in 2).
  • (S1005) The recording power and the erasing power set as the base recording power in (S1002) or (S2006) are set in the laser drive driver 119, and the recording power and erasing power of the optical disc 140 are Base recording is performed in the trial writing area 142.
  • the laser power waveform during base recording is as shown in Fig. 7, for example. That is, the signal processing device 110 controls the optical pickup 100 so that the base recording is performed in the test writing area 142 with the recording power and the erasing power set as the base recording power.
  • the recording quality (modulation degree) of the test writing area becomes the same recording quality (same modulation degree) as that of the target recording area.
  • the optical disc apparatus performs erasing while changing the erasing power stepwise as shown in FIG. 3 in the area where the base recording is performed in (S1005).
  • the laser driver driver 119 controls the current for driving the LD 101 according to the value of the erasing power output by the staircase light emission processing means 118. That is, the signal processing apparatus 110 controls the optical pickup 100 so that erasure is performed with the erasing power that changes stepwise in the area where the background recording is performed in (S1005).
  • the optimum recording power calculating means 117 calculates the optimum erasing power based on the modulation degree of the area erased by each erasing power.
  • the optical disc apparatus performs a recording power OPC for obtaining an optimum recording power.
  • the optical disc apparatus has a plurality of types of erasures in the trial writing area having the same recording quality as that of the target recording area before the data is recorded on the optical disc 140.
  • the optimum erasing power is calculated by erasing using the power. Therefore Even DVD-RW double-layer discs and other recording media with low margins for erasing power can be recorded with high recording quality.
  • the base recording power calculation means 116 calculates the recording power and the erasing power so that the modulation degrees at a plurality of locations in the data area are calculated and the modulation degree of the test writing area 142 is the average of the modulation degrees. It may be. For example, the process of dividing the data area 143 into a plurality of zones, calculating the top modulation degree for each of the plurality of zones, and calculating the average of the calculated modulation degrees is performed instead of the process in (S 1003). However, the recording power for base recording may be calculated based on the average.
  • the data area 143 can be divided into equal divisions or based on the information indicating the recording start position recorded each time in the disk management area 141! /, And each zone ends from the start of one recording. There is a method to divide the area so that
  • the force measurement position at which the degree of modulation at the recording start position in the target recording area is measured is not limited to the recording start position.
  • the degree of modulation at the outer periphery of the optical disc 140 may be measured.
  • the outer circumference of the optical disc 140 is greatly affected by the deformation of the optical disc.
  • the optical disk apparatus according to Embodiment 2 of the present invention includes a system controller 114 that performs control different from the system controller 114 of the optical disk apparatus of Embodiment 1.
  • 1S Other configurations are the same as in Embodiment 1. Therefore, the description is omitted.
  • the optical disc apparatus performs the same processing as that of the first embodiment for the processing of (S 1001) and (S 1002) of FIG.
  • processing performed instead of the processing in (S1003) and after will be described with reference to the flowchart of FIG.
  • the optical pickup 100 By controlling the system controller 114 force S and the motor 130, the optical pickup 100 is moved to a position where light is irradiated to the head of the zonek (recording quality acquisition position). Then, the optical pickup 100 irradiates the head with light. And optical picker The light receiving element 102 of the top 100 receives the reflected light from the optical disc 140.
  • the reflected light received in (S3002) is converted into an electric signal, and the RF signal detection unit 111 detects the RF signal from the electric signal. Then, the modulation degree calculation means 113 calculates the modulation degree based on the detected RF signal.
  • the system controller 114 stores the modulation degree calculated in (S3003) in the storage means 115 in association with the zonek address.
  • the stair emission processing means 118 stores the recording power corresponding to the modulation degree of each zone calculated in (S3003) with the modulation degree / recording value stored in the storage means 115 in advance. Calculate using the formula.
  • the calculated recording power is sequentially set in the laser driver 119, and recording is performed with the recording power that changes in a stepwise manner.
  • the laser power detection means 120 detects the recording power and the erasing power, and the detected recording power and erasing power are stored in the storage means 115.
  • RF signal detecting means 111 detects an RF signal based on the electrical signal obtained by converting the reflected light from the area recorded in (S3008), and modulation degree calculating means 113 is based on the RF signal.
  • the modulation degree is calculated by using the storage means 115.
  • the system controller 114 reads out the recording unit value detected in (S3009) and the modulation degree value calculated in (S3010) from the storage means 115, as shown in FIG. By performing the approximation, the modulation degree / recording power relational expression is calculated and stored in the storage unit 115 as the latest modulation degree / recording power relational expression.
  • the degree of modulation calculated in (S3011) ⁇ recording power relational expression force is read from the storage means 115.
  • the base recording power calculation means 116 obtains the recording power for base recording corresponding to the modulation degree of the zone read in (S3013) in (S3011) for each zone. Modulation rate ⁇ Calculated using the recording power relational expression. That is, the base recording power calculation unit 116 calculates a recording power suitable for making the modulation degree of the test writing area 142 the same as the read modulation degree of the zone for each zone. Further, the erasing power is calculated based on the calculated recording capacity. Then, the system controller 114 sets the calculated recording power and erasing power as the base recording power.
  • the recording power for base recording for each zone determined in (S3014) is set in the laser driver 119, and the base recording is performed in the test writing area 142 of the optical disc 140 by these recording powers. Done. That is, the signal processing device 110 controls the optical pickup 100 so that the base recording is performed in the test writing area 142 with the recording power and the erasing power set as the base recording power.
  • the optical disc apparatus increases the erasing power in a stepwise manner for each zone in the test writing area 142 with the same modulation degree as that zone.
  • the optimum erasing power is calculated by performing erasing while changing.
  • the optical disc apparatus can calculate the optimum erasing power according to the recording quality of the data area 143 prior to the recording of data onto the optical disc 140, as in the first embodiment. Therefore, it is possible to record with high recording quality even on recording media with a small margin of erasing power, such as DVD-RW double-layer discs. Furthermore, since the optimum erasing power is calculated for each zone, even when a plurality of areas having different recording qualities exist in the data area 143, recording can be performed with high recording quality on the entire surface of the optical disc 140.
  • the data area 143 is equally divided in (S3001), but the method of dividing the storage area is not limited to equal division, and is recorded in the disk management area 141 on the inner periphery of the optical disc 140!
  • the data area 143 may be divided based on information indicating the recording start position of each recording. Each time one recording is performed, information indicating the recording start position of the recording is recorded in the disk management area 141. Therefore, each zone is recorded from the start to the end of one recording based on the information. It is the power to defragment the data area so that it becomes an area.
  • zonel ⁇ ! ! In the processes of (S3002) to (S3006), zonel ⁇ ! ! In all cases, the degree of modulation is calculated based on the RF signal.
  • the modulation degree is calculated based on the RF signal only for some two or more zones of zonel to n, and the modulation degrees of the other zones are interpolated using the calculated modulation degrees. May be required by For example, an approximation expression indicating the correspondence between the address and the modulation degree may be obtained based on the modulation degree of a part of the zones, and the modulation degree of other zones may be obtained based on the approximate expression.
  • the base recording power calculation means 116 may calculate the recording power and the erasing power based on the modulation degree obtained by interpolation.
  • the optical disk apparatus of the second embodiment does not perform the process of calculating the modulation degree'recording relational expression in (S3007) to (S3011), and the modulation degree stored in the storage unit 115 in advance
  • a recording power relational expression may be used.
  • the area in each zone where the modulation factor is measured is not limited to the top.
  • the optical disk apparatus according to Embodiment 3 of the present invention includes a system controller 114 that performs control different from the system controller 114 of the optical disk apparatus of Embodiment 1.
  • Other configurations are the same as those in the first embodiment, and thus description thereof is omitted.
  • the optical disc apparatus of the present embodiment obtains an appropriate erase pattern without performing the processing of (S1003) and (S1004) in Fig. 5 by performing erase power OPC in the data area. is there.
  • (S4001) System Controller 114 Force By controlling the motor 130, the optical pickup 100 is moved to an area for actually recording data on the optical disc 140 (hereinafter referred to as “target recording area”). Then, the RF signal detecting means 111 detects an RF signal component from the electrical signal obtained by photoelectrically converting the laser light reflected from the target recording area, and the unrecorded / recording discriminating means 112 is based on the detected signal. Then, it is determined whether the target recording area is recorded or not recorded. If the target recording area has not been recorded, the process proceeds to (S4002), and if the target recording area has been recorded (the process proceeds to S4004).
  • the optical disc apparatus reads optical disc manufacturer recommended power information recorded in the disc management area on the inner periphery of the optical disc.
  • This optical disc manufacturer recommended power information includes the optical disc manufacturer's recommended recording power and erasing power.
  • (S4003) Recording power and erasing power recommended by the optical disc manufacturer are set as the base recording power, and the optical disc apparatus performs base recording on the optical disc 140 using these powers. This base recording is performed in the test writing area 142 or the data area 143 of the optical disc 140. Then, the system controller 114 sets the position of the optical pickup 100 to a position where the laser beam is irradiated to the area where the ground recording is performed.
  • the system controller 114 keeps the position of the optical pickup 100 at a position where the target recording area is irradiated with laser light.
  • the optical disc apparatus performs erasing while changing the erasing power stepwise. This erasure is performed on the target recording area when it is determined that the target recording area has been recorded in (S4001), and when the target recording area is determined to be unrecorded in (S4001). , (S4003) is performed on the area where the background recording is performed.
  • the optimum recording power calculating means 117 calculates the optimum erasing power based on the modulation degree of the area erased by each erasing power.
  • the optical disc apparatus performs recording power OPC to obtain an appropriate recording power. [0086] The operations (S4001) to (S4007) are performed prior to data recording on the optical disc 140, and when this operation is completed, actual data recording is performed.
  • the optical disc apparatus can calculate the optimum erasing power according to the quality of the target recording area prior to data recording on the optical disc 140. Even a recording medium such as a disk with a small erasing power margin can be recorded with high recording quality.
  • erasing is performed while changing the erasing power with respect to the target recording area, so trial writing is performed in order to bring the modulation degree of the trial writing area 142 close to the modulation degree of the target recording area.
  • the erasing power can be calculated in a shorter time than when the background recording is performed on the area 142.
  • the recording / reproducing apparatus includes an optical disk device 200, a storage unit 201, a battery remaining amount measuring unit 202, and a drive power source determining unit 203.
  • This recording / reproducing apparatus can use an alternating current (AC) power source 204 and a battery 205 as a driving power source.
  • this recording / reproducing apparatus is provided in a personal computer or an optical disk recorder.
  • the optical disk apparatus 200 has a system controller 114 that performs control different from the system controller 114 of the signal processing apparatus 110 of the first embodiment.
  • the optical disk apparatus 200 is the same as the optical disk apparatus of the first embodiment. It is the same.
  • the optical disk apparatus 200 performs the erasing power OPC prior to data recording on the optical disk 140
  • the optical disk apparatus 200 according to the first embodiment performs a process for obtaining the erasing power in (S IOO :! to (S1007) in FIG. (Hereinafter referred to as “first process”) and a process for obtaining an erasing power (hereinafter referred to as “second process”) by the optical disc apparatus of the second embodiment. It is supposed to be executed.
  • the storage unit 201 stores a threshold for the remaining amount of knotter that causes the optical disc apparatus 200 to switch between the first process and the second process. This threshold value is determined by the user of the recording / reproducing apparatus or the like and stored in the storage unit 201.
  • the remaining battery level measuring means 202 measures the remaining battery level.
  • the drive power source discriminating means 203 is used to check whether the drive power source currently used! / Is an AC power source. Automatically determine if it is a terry. In other words, it is determined whether the current state is the power in the AC power supply driving state or the power in the battery driving state. Then, based on the determination result, the power for causing the optical disc device 200 to execute either the first process or the second process is determined. If the drive power supply used is an AC power supply, the process to be executed by the optical disc device 200 is determined as the second process.
  • the driving power source used is a battery
  • the remaining amount measured by the battery remaining amount measuring unit 202 is compared with the threshold value stored in the storing unit 201, and the remaining amount is larger than the threshold value.
  • the process to be executed by the optical disk device 200 is determined as the second process
  • the process to be executed by the optical disk device 200 is determined as the first process.
  • the optical disk device 200 can obtain the first process for shortening the time required for the erase power OPC and the highly accurate erase power for each zone according to the determination result by the drive power source discriminating means 203. Select either! / Of the two processes or execute the selected process.
  • the recording / reproducing apparatus of the present embodiment can calculate the optimum erasing power according to the recording quality of the data area 143 prior to the data recording on the optical disc 140, as in the first embodiment. Therefore, it is possible to record with high recording quality even on recording media with a small margin of erasing power, such as DVD-RW double-layer discs.
  • the recording / playback apparatus according to the present embodiment according to the type of drive power used and the remaining battery level, emphasizes the accuracy of the erasing power obtained by the erasing power OPC and the processing related to the erasing power OPC. One of the processes that emphasizes time reduction can be selected.
  • the storage unit 201 and the remaining battery level measurement unit 202 are not provided in the recording / reproducing device, and simply when the driving power source used is an AC power source, the optical disc device 200 executes the second process and uses it. In the case where the drive power source that is used is a battery, the optical disc apparatus 200 may execute the first process.
  • the first process and the second process are selected automatically by the force S, which is selected by the user input to the optical disc apparatus. You may be made to do.
  • the input content by the user may be held in the storage means, and the optical disc device 200 may perform processing according to the input content.
  • the optical disc apparatus 200 performs processing (hereinafter referred to as “third process”) when the optical disc apparatus of the third embodiment obtains the erasing power. The power to execute either the first process or the third process based on the type of drive power source to be used and the remaining battery level, It is possible to determine which of the processing and the third processing is executed, or which of the first to third processing is executed.
  • the recording / reproducing apparatus includes an optical disc apparatus 200, an execution processing storage unit 301, and a recording setting determination unit 302.
  • the recording / reproducing apparatus of the present embodiment starts earlier than the date and time when recording data on the optical disc 140 at a predetermined date and time, that is, when performing scheduled recording. Start erasing power OPC.
  • the execution process storage means 301 stores information indicating which of the first process and the second process is to be executed by the optical disc device 200! /.
  • the recording setting discriminating means 302 discriminates whether the recording to be started is a reserved recording or an immediate recording, and based on the discrimination result, the first process and the second Which of the processes is to be executed by the optical disk device 200 is determined.
  • the optical disk device 200 is instructed to execute the process indicated by the information stored in the execution process storage means 301 of the first process and the second process.
  • the recording setting discriminating means 302 is used when data recording to the optical disc 140 is performed at a predetermined date and time in the recording / reproducing apparatus, that is, when the recording to be started is a reserved recording.
  • the process to be executed by the optical disc apparatus 200 is determined as the second process.
  • data recording to the optical disc 140 is started immediately in response to an input by the user at a date and time that is not determined as the date and time for data recording, that is, if the recording to be started is immediate recording, The process to be executed by the device 200 is determined as the first process.
  • the optical disc apparatus 200 selects one of the first process and the second process according to the determination result by the recording setting determination unit 302, and selects the selected process. Execute. On the other hand, in the second mode, one of the first process and the second process is selected and the selected process is executed according to the instruction from the recording setting discriminating means 302.
  • the recording / reproducing apparatus of the present embodiment starts earlier than the date and time when recording data on the optical disc 140 at a predetermined date and time. You can spend time on OPC. Therefore, in this case, the optical disc device 200 performs the second process that can obtain high accuracy / erase power for each zone. On the other hand, when the recording / reproducing apparatus immediately starts data recording, the optical disc apparatus 200 performs the first process for shortening the time required for the erasing power OPC because it cannot take time for the erasing power OPC.
  • the recording / reproducing apparatus of the present embodiment can calculate the optimum erasing power corresponding to the recording quality of the data area 143 prior to the data recording on the optical disc 140, as in the first embodiment. Therefore, it is possible to record with high recording quality even on recording media with a small margin of erasing power, such as DVD-RW double-layer discs.
  • the recording / playback apparatus according to the present embodiment performs processing that emphasizes the accuracy of the erasing power obtained by the erasing power OPC and the erasing power depending on whether the recording to be started is a reserved recording or an immediate recording. O One of the processes that emphasizes the reduction of processing time on the PC can be automatically selected.
  • the recording / reproducing apparatus may perform only one of the operation in the first mode and the operation in the second mode.
  • the optical disk apparatus 200 performs processing (hereinafter referred to as “third process”) when the optical disk apparatus of the third embodiment obtains the erasing power.
  • third process processing
  • the ability to perform either the first process or the third process, based on whether the recording to be started is a scheduled recording or an immediate recording, It is also possible to determine which of the second process and the third process is executed, or which of the first to third processes is executed. ,.
  • the recording / reproducing apparatus includes an optical disc device 400, disc ID (identification) storage means 401, and disc m information discrimination means 402.
  • the optical disk device 400 has a system controller 114 that performs control different from the system controller 114 of the signal processing device 110 of the first embodiment.
  • the optical disk device 400 is the same as the optical disk device of the first embodiment. It is the same.
  • the optical disc apparatus 400 has the ability to execute the operations shown in FIGS. 5 and 6 by the optical disc apparatus of Embodiment 1. At that time, recording is performed with a plurality of types of recording power in the test writing area, and recording is performed by the recording quality acquisition means. Calculate the quality and execute the relational expression calculation step for calculating the modulation degree / recording power relational expression used in (S2006), or do not execute the relational expression calculation step, • Select whether to use the recording power relation in (S2006)! /, And execute the process according to the selection result.
  • the disk ID storage unit 401 stores the disk ID read from the disk management area 141 of the optical disk 140.
  • the disc D information discriminating means 402 detects the disc ID from the disc management area 141 of the optical disc 140, and the detected disc ID matches the disc ID stored in the disc ID storage means 401! Determine if /.
  • the optical disc device 400 performs the above relational expression calculating step.
  • the disc ID detected by the disc 3 information discriminating means 402 is stored in the disc ID storing means 401 while the modulation degree / recording power relational expression stored in advance in the storing means 115 is used. If it is determined that the disk ID does not match, the above relational expression calculating step is executed.
  • the recording / reproducing apparatus of the present embodiment performs the operation shown in FIG. 15 in place of the operation of (S2004) in FIG. 6 by the optical disc apparatus of the first embodiment for executing the operation shown in FIG. 5 and FIG. Do.
  • the operation of the recording / reproducing apparatus shown in the flowchart of FIG. 15 will be described below.
  • the disc D information discriminating means 402 uses the disc management area 141 of the optical disc 140.
  • the disc ID force that has been read is discriminated whether it matches the disc ID stored in the disc ID storage means 401. If the disc ID read from the disc management area 141 of the optical disc 140 matches the disc ID stored in the disc ID storage means 401, the processing by the recording / reproducing apparatus proceeds to (S2004). If they do not match, proceed to (S5002).
  • the laser power detection means 120 detects the recording power, and the detected recording power is stored in the storage means 115.
  • RF signal detection means 111 detects an RF signal based on the electrical signal obtained by converting the reflected light from the area recorded in (S5003), and modulation degree calculation means 113 is based on this RF signal.
  • the modulation degree is calculated by using the storage means 115.
  • the system controller 114 reads out the recording unit value detected in (S5003) and the modulation factor value calculated in (S5004) from the storage means 115, and the modulation factor / recording power relationship The formula is calculated and stored in the storage means 115 as the latest modulation degree / recording power relational formula.
  • the system controller 114 reads from the storage means 115 the modulation degree 'power relational expression calculated in (S5005).
  • the modulation degree / recording power relational expression is not recalculated.
  • the modulation degree / recording power relation stored in the storage means 115 is used.
  • the modulation degree / recording power relational expression is recalculated, and the modulation degree / recording power relational expression obtained by the recalculation is calculated. Is stored in the storage means 115 and used. Note that the modulation factor obtained during the recalculation and the modulation factor that is the result of the recalculation
  • the recording power relational expression may be stored on the optical disc 140.
  • the recording / reproducing apparatus of the present embodiment can calculate the optimum erasing power according to the recording quality of the data area 143 prior to the data recording on the optical disc 140, as in the first embodiment. Therefore, it is possible to record with high recording quality even on recording media with a small margin of erasing power, such as DVD-RW double-layer discs. Also, when an optical disc with the same ID as the previous one; L40 is mounted, the modulation degree / recording power relational expression already stored in the storage means 115 is used, so that the modulation degree / recording power relational expression is recalculated. Erase power Reduces the time required for OPC.
  • the recording / reproducing apparatus of the sixth embodiment includes the optical disk apparatus of the second embodiment instead of the optical disk apparatus 400, and stores the disk ID force read from the disk management area 141 of the optical disk 140 in the disk ID storage unit 401.
  • the operation to calculate the modulation degree / recording power relation in (S3007) to (S3011) in FIG. 8 is performed or not performed. You may make it do. In this case, the processing in (S3007) to (S3011) corresponds to step (d).
  • the recording / reproducing apparatus includes an optical disc device 400 and disc attachment / detachment information discriminating means 501 as shown in FIG.
  • the disc attachment / detachment information discriminating means 501 detects whether the optical disc 140 is attached / detached (extraction and attachment), and discriminates whether or not the optical disc 140 is attached / detached with the previously calculated modulation degree / recording power relational expression. . Specifically, for example, when the tray is opened / closed, it is determined that the optical disk 140 is attached / detached, and when the tray is not opened / closed, it is determined that the optical disk 140 is not attached / detached. To do.
  • the disc attachment / detachment information discriminating means 501 discriminates that the optical disc 140 has not been attached / detached since the discrepancy degree / recording relation relational equation was previously calculated.
  • the modulation degree / recording power relational expression stored in the storage means 115 in advance is used, while the disk attachment / detachment information discriminating means 501 calculates the modulation degree / recording power relational expression from the previous time. 140 is attached and detached If it is determined that the relational expression is determined, the relational expression calculating step is executed.
  • the modulation degree / recording power relational expression already stored in the storage means 115 is used without recalculating the expression.
  • the modulation degree / recording power relational expression is recalculated, and the modulation degree / recording power relational expression obtained by the recalculation is stored. It is stored in the means 115 and used. It should be noted that the modulation factor obtained during the recalculation and the modulation power recording power relational expression that is the result of the recalculation may be stored on the optical disc 140.
  • the recording / reproducing apparatus of the present embodiment can calculate the optimum erasing power corresponding to the recording quality of the data area 143 prior to the recording of data on the optical disc 140, as in the first embodiment, the DVD — High recording quality can be recorded even on recording media with a small margin of erasing power, such as RW double-layer discs. If the optical disk 140 has not been attached / detached since the modulation degree / recording power relational expression was previously calculated, the modulation degree / recording power relational expression already stored in the storage means 115 is used. Compared to recalculating the relational expression, the time required for erasing power OPC can be shortened.
  • the recording / reproducing apparatus of the seventh embodiment includes the optical disk apparatus of the second embodiment instead of the optical disk device 400, and the modulation degree / recording power relational expression is calculated last time, and the optical disk 140 is attached and detached.
  • the operation for calculating the modulation degree / recording power relational expression in (S3007) to (S3011) in FIG. 8 may or may not be performed depending on whether or not it is received.
  • the recording / reproducing apparatus includes an optical disc device 400, an expiration date storage unit 601 and an expiration date determination unit 602.
  • Expiration date storage means 601 includes a disc ID read from optical disc 140 and an optical disc.
  • the 140 expiration dates are stored in association with each other.
  • the expiration date discriminating means 602 is used for the disc of the optical disc 140 mounted in the optical disc apparatus. If the disk ID power S is the same as the disk ID already stored in the expiration date storage means 601, when the erase power OPC is performed, the current ID is associated with that disk ID in the expiration date storage means 601. It is determined whether or not it is within the stored expiration date.
  • the optical disc device 400 determines that the current time is within the expiration date stored in association with the disc ID in the expiration date storage unit 601 by the expiration date determination unit 602, the relational expression While the calculation step is not executed, the modulation degree / recording power relational expression stored in advance in the storage unit 115 is used, while the current expiration date storage unit 601 is associated with the disc ID! If it is determined that the stored date is not within the expiration date, the above relational expression calculating step is executed.
  • the current date is stored in the expiration date storage means 601 in association with the disc ID of the optical disk 140 attached!
  • the modulation degree / recording power relational expression already stored in the storage means 115 is used without recalculating the modulation degree / recording power relational expression.
  • the modulation degree / recording power relational expression is recalculated,
  • the modulation degree / recording power relationship obtained by the recalculation is stored in the storage means 115 and used. It should be noted that the modulation factor obtained during the recalculation and the modulation factor / recording power relational force resulting from the recalculation may be stored on the optical disc 140.
  • the recording / reproducing apparatus of the present embodiment can calculate the optimum erasing power corresponding to the recording quality of the data area 143 prior to the recording of data on the optical disc 140, as in the first embodiment, the DVD — High recording quality can be recorded even on recording media with a small margin of erasing power, such as RW double-layer discs.
  • the erasing power OPC for the optical disc 140 within the expiration date the modulation degree / recording power relational expression already stored in the storage means 115 is used. Power OPC time can be shortened, and the area of the optical disk 140 used for erasing power can be reduced.
  • the recording / reproducing apparatus of the eighth embodiment includes the optical disk apparatus of the second embodiment instead of the optical disk apparatus 400, and the expiration date storage means 601 is associated with the disk ID of the optical disk 140 currently mounted.
  • the expiration date storage means 601 is associated with the disk ID of the optical disk 140 currently mounted.
  • (S3007) to (S3011) in Fig. 8 may or may not perform the operation to calculate the modulation degree / recording power relational expression. It may be.
  • the recording / reproducing apparatus includes an optical disc device 400, a temperature storage unit 701, a temperature determination unit 702, and a temperature measurement unit (not shown).
  • the temperature measuring means measures the temperature of the optical disc device 400. This temperature may be the temperature inside the signal processing device 110 or the temperature inside the optical pickup 100.
  • the temperature storage unit 701 stores the disk ID and the temperature of the optical disk device 400 in association with each other.
  • the stored temperature is the temperature measured by the temperature measuring means when the last erasing power OPC was performed on the optical disk having the corresponding disk ID.
  • the temperature determination unit 702 reads from the temperature storage unit 701 the temperature stored in association with the disc ID of the optical disc 140 attached to the optical disc apparatus 400. This temperature is the temperature of the optical disc apparatus 400 at the time of the erasing power OPC performed for the optical disc 140 having the disc ID last time. Then, it is determined whether or not the differential force S between the read temperature and the temperature immediately before the erasure No. 1 OPC is less than a predetermined value.
  • the optical disc device 400 When the temperature discriminating means 702 determines that the difference is less than a predetermined value, the optical disc device 400 does not execute the relational expression calculating step, and stores the information in advance. While the modulation degree / recording power relational expression stored in 115 is used, if it is determined that the difference 1S is greater than or equal to a predetermined value, the relational expression calculating step is executed.
  • the temperature storage is performed at the time of erasing power OPC for the optical disc.
  • the temperature storage is performed at the time of erasing power OPC for the optical disc.
  • the disk ID in means 701 Reads the stored temperature at the last erase power OPC. Then, when the temperature of the optical disk device 400 is newly measured by the temperature measuring means, and the difference between the measured temperature and the temperature read from the temperature storage means 701 is less than a predetermined value, the modulation degree / recording The modulation degree / recording power relation already stored in the storage means 115 is used without recalculating the power relation.
  • the modulation degree'recording power relational expression is recalculated and obtained by the recalculation.
  • the modulation degree / recording power relationship is stored in the storage means 115 and used. It should be noted that the modulation factor obtained at the time of recalculation and the modulation factor / recording power relational expression as a result of the recalculation may be stored on the optical disc 140.
  • the recording / reproducing apparatus of the present embodiment can calculate the optimum erasing power corresponding to the recording quality of the data area 143 prior to the recording of data on the optical disc 140, as in the first embodiment, the DVD — High recording quality can be recorded even on recording media with a small margin of erasing power, such as RW double-layer discs. Even if the temperature of the optical disk device at the start of recording changes greatly from the previous erasing power OPC, the modulation degree-recording power relational expression is recalculated. The ability to seek the right one is possible.
  • the modulation degree and recording power relational expression already stored in the storage means 115 are used. Compared to recalculating the recording power relational expression, the time required for erasing power OPC can be shortened.
  • the temperature of the optical disc device 400 is measured and used.
  • the temperature of the optical disc 140 may be measured and used.
  • the optical disc device 200 described in the fourth embodiment is provided instead of the optical disc device 400, and the temperature determination unit 702 is based on the temperature of the optical disc device 200 measured by the temperature measurement unit or the temperature of the optical disc 140. Thus, it may be determined whether the optical disc apparatus 200 is to execute the first process and the second process!
  • the recording / reproducing apparatus of the ninth embodiment is not limited to the optical disc apparatus 400, but in the embodiment.
  • the difference between the temperature of the optical disk device at the time of the erase power OPC performed this time and the temperature of the optical disk device at the time of the previous erase power OPC is less than a predetermined value
  • the operation for calculating the modulation degree-recording power relational expression in (S3007) to (S3011) in FIG. 8 may or may not be performed.
  • an asymmetry value may be used in place of the force modulation degree in which the modulation degree is used as a value indicating the recording quality.
  • the asymmetry value indicates the asymmetry of the RF signal
  • dc represents the DC value of the RF signal.
  • the base recording power calculation means 116 calculates the recording power at the time of base recording by using the modulation factor and the recording noise relational expression. It is not necessary to calculate by using a relational expression.
  • the storage unit 115 stores a plurality of sets of modulation degrees and recording powers corresponding to the modulation degrees, and the recording power corresponding to the measured modulation degrees is determined as the recording power at the time of base recording. It's fine to be done.
  • the recording power for ground recording suitable for the ground recording power calculation means 116 to make the modulation degree of the test writing area 144 the same as the modulation degree of the recording quality acquisition position. was supposed to be calculated.
  • the recording power is not limited to the recording power at which the modulation degree of the trial writing area 142 is exactly the same as the modulation degree of the recording quality acquisition position, but the recording power that makes the modulation degree of the trial writing area 142 close to the modulation degree of the recording quality acquisition position. It may be calculated.
  • the optical disk apparatus of Embodiment 1 may be configured to perform the operations of (S5002) to (S5006) of Fig. 15 instead of the operation of (S2004) of Fig. 6. ! / ⁇ .
  • the optical disk device 200 includes the first process and the second process based on the type of drive power used, the remaining battery level, or the recording setting. It was decided to decide which one to execute.
  • the optical disk device 200 The number of zones to be divided in the first and second types of processing differs from the number of locations where the modulation factor is measured, and two or more types of processing that determine the optimum recording power for each zone (multiple Depending on the type of drive power used, the remaining battery level, or the recording settings, which of these processes is to be executed by the optical disk device 200 is determined. You may be made to do. Further, based on the temperature of the optical disc device 200 or the optical disc 140, it may be determined which of these processes is to be executed by the optical disc device 200.
  • Embodiments 4 to 9 are not limited to the configurations shown in the block diagrams of FIGS. 12 to 14; 16, 16 to 18; the same functions may be realized by other configurations. .
  • the signal processing apparatus, optical disk apparatus, recording / reproducing apparatus, integrated circuit, and signal processing method according to the present invention correctly set the optimum erasing power by the erasing power OPC even when overwriting the data area.
  • it is useful as a technique for optimizing the erasing power at the time of recording on a rewritable disc represented by DVD-RW, DVD + RW, and the like.

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Abstract

A signal processing device (110) carries out a pre-processing including a step (a) of allowing an optical pickup (100) to shine light to a recording quality acquiring position in a data area of an optical disk (140), a step (b) of allowing recording quality acquiring means (121) to calculate the recording quality in the recording quality acquiring position from the output signal of the optical pickup (100) at step (a), and a step (c) of allowing base layer recording power calculating means (116) to calculate the base layer recording power from the recording quality in the recording quality acquiring position. The device (110) further controls the optical pickup (100) so as to record data a trial write area with the base layer recording power, and uses the area where the base layer recording is carried out to calculate the optimum erasing power.

Description

明 細 書  Specification
信号処理装置、光ディスク装置、記録再生装置、集積回路および信号処 理方法  Signal processing apparatus, optical disc apparatus, recording / reproducing apparatus, integrated circuit, and signal processing method
技術分野  Technical field
[0001] 本発明は、光ディスクに対するデータの記録に係る信号処理を行う信号処理装置、 光ディスク装置、記録再生装置、集積回路、および信号処理方法に関し、 DVD-R W、 DVD + RW等に代表される書き換え可能型ディスクに対する記録時の消去パヮ 一を最適化する技術に関する。  The present invention relates to a signal processing device that performs signal processing related to data recording on an optical disc, an optical disc device, a recording / reproducing device, an integrated circuit, and a signal processing method, and is represented by DVD-RW, DVD + RW, and the like. The present invention relates to a technique for optimizing the erasure rate during recording on a rewritable disc.
背景技術  Background art
[0002] 従来の消去パワー調整（以下、「消去パワー OPC (Optimum Power Control) 」）は、図 19に示すような処理を行うものである。まず、記録前に、（S6001)において 記録パワーおよび消去パワーを取得する。この記録パワーおよび消去パワーは、デ イスクメーカー推奨の固定の値である。そして、（S6002)において、（S6001)で取 得した記録パワーおよび消去パワーを用いて下地記録を行い、 (S6003)において、 下地記録が行われた光ディスク上の領域に対して、消去パワーをセクタ毎に段階的 に変化させながら上書き消去（以下、「階段消去」と呼ぶ。）を行い、（S6004)におい て、各セクタの変調度に基づいて最適消去パワーを決定する。次に、（S6005)にお いて、消去パワー OPCと同様に、記録パワーをセクタ毎に段階的に変化させながら 記録（階段記録)を行い、最適記録パワーを求める。このときの消去パワーには、 (S6 004)で決定した最適消去パワーを用いる。  Conventional erasing power adjustment (hereinafter referred to as “erasing power OPC (Optimum Power Control)”) performs processing as shown in FIG. First, before recording, recording power and erasing power are acquired in (S6001). The recording power and erasing power are fixed values recommended by the disk manufacturer. In (S6002), the base recording is performed using the recording power and the erasing power obtained in (S6001). In (S6003), the erasing power is set to the sector on the area on the optical disk where the base recording is performed. Overwrite erasure (hereinafter referred to as “stair erasure”) is performed step by step, and the optimum erasure power is determined based on the degree of modulation of each sector in (S6004). Next, in (S6005), as with the erase power OPC, recording (step recording) is performed while changing the recording power step by step for each sector, and the optimum recording power is obtained. As the erase power at this time, the optimum erase power determined in (S6 004) is used.
特許文献 1 :特開 2005— 122793号公報  Patent Document 1: JP-A-2005-122793
発明の開示  Disclosure of the invention
発明が解決しょうとする課題  Problems to be solved by the invention
[0003] しかしながら、前記従来の方法においては、ディスクメーカー推奨の固定の記録パ ヮー ·消去パワーによって下地記録を行うので、記録済みのデータ領域に上書きする 場合、下地記録を行った領域の下地記録品質が、このデータ領域と異なるものとなる 。これにより、消去パワー OPCによって得られる最適消去パワーが最適値にならない という問題が生じる。この問題は、多層型の書き換え可能型ディスクを用いた場合、 特に顕著である。 [0003] However, in the conventional method, since the base recording is performed with the fixed recording power and erasing power recommended by the disk manufacturer, when overwriting the recorded data area, the base recording of the area where the base recording was performed is performed. The quality will be different from this data area. As a result, the optimum erase power obtained by erase power OPC does not reach the optimum value. The problem arises. This problem is particularly noticeable when a multilayer rewritable disc is used.
[0004] したがって、本発明は、実際にデータを記録するデータ領域に上書きする場合に おいても消去パワー OPCによって最適消去パワーを正しく求められるようにすること を目的とする。  [0004] Therefore, an object of the present invention is to make it possible to correctly obtain the optimum erasing power by erasing power OPC even when data is actually overwritten in a data area.
課題を解決するための手段  Means for solving the problem
[0005] 上記の課題を解決するため、本発明は、光ディスク装置において、最適消去パワー を決定する信号処理であって、光ピックアップに、光ディスクのデータ領域における 記録品質取得位置に光を照射させるステップ ωと、前記ステップ ωにおける前記 光ピックアップの出力信号から、前記記録品質取得位置における記録品質を算出す るステップ (b)と、前記記録品質取得位置における記録品質に基づいて、前記光ディ スクにおける試し書き領域に下地記録を行うための下地記録パワーを算出するステツ プ (C)とを含む前処理を行い、その後、前記試し書き領域に前記下地記録パワーに よって下地記録が行われるように前記光ピックアップを制御し、当該下地記録が行わ れた領域を最適消去パワーの算出に用いることを特徴とする。  In order to solve the above problems, the present invention provides signal processing for determining an optimum erasing power in an optical disc apparatus, the step of causing an optical pickup to irradiate a recording quality acquisition position in a data area of the optical disc. (b) calculating the recording quality at the recording quality acquisition position from ω and the output signal of the optical pickup at the step ω, and based on the recording quality at the recording quality acquisition position, A pre-processing including a step (C) of calculating a base recording power for performing base recording in the test writing area, and then the base recording is performed in the test writing area by the base recording power. The optical pickup is controlled, and the area where the background recording is performed is used for calculating the optimum erasing power.
[0006] これにより、データ領域における記録品質取得位置における記録品質に基づいて 算出された下地記録パワーによって試し書き領域に下地記録が行われるので、試し 書き領域の記録品質をデータ領域の記録品質と近いものとする下地記録パワーが算 出されるようにした場合には、データ領域がすでに記録済みである場合においても、 下地記録によって、試し書き領域の記録品質力 データ領域の記録品質と近いもの になる。そして、データ領域の記録品質と近い記録品質を有するこの試し書き領域を 用いて、最適消去パワーを正しく算出できる。したがって、データ領域に上書きする 場合においても消去パワー OPCによって最適消去パワーを正しく求めることができる 発明の効果  [0006] Thereby, since the base recording is performed in the trial writing area by the base recording power calculated based on the recording quality at the recording quality acquisition position in the data area, the recording quality of the trial writing area is set as the recording quality of the data area. When the base recording power to be close is calculated, even if the data area has already been recorded, the recording quality of the test writing area is close to the recording quality of the data area by the base recording. Become. Then, the optimum erasing power can be correctly calculated by using this test writing area having a recording quality close to the recording quality of the data area. Therefore, even when the data area is overwritten, the optimum erase power can be correctly obtained by the erase power OPC.
[0007] 本発明によると、データ領域における記録品質取得位置における記録品質に基づ いて算出された下地記録パワーによって試し書き領域に下地記録が行われるので、 データ領域がすでに記録済みである場合にぉレ、ても、下地記録後の試し書き領域の 記録品質を、データ領域の記録品質と近いものにできる。したがって、データ領域に 上書きする場合においても消去パワー OPCによって最適消去パワーを正しく求める こと力 Sでさる。 [0007] According to the present invention, since the base recording is performed in the trial writing area with the base recording power calculated based on the recording quality at the recording quality acquisition position in the data area, the data area is already recorded. Even if it is a mistake, The recording quality can be close to the recording quality of the data area. Therefore, even when overwriting the data area, it is possible to obtain the optimum erasing power correctly by erasing power OPC.
図面の簡単な説明 Brief Description of Drawings
[図 1]図 1は、本発明の実施形態 1の光ディスク装置の構成を示すブロック図である。 FIG. 1 is a block diagram showing a configuration of an optical disc apparatus according to Embodiment 1 of the present invention.
[図 2]図 2は、同、変調度を算出するための式を示す図である。 FIG. 2 is a diagram showing an equation for calculating the degree of modulation.
[図 3]図 3は、同、階段状に変化する消去パワーの波形を示すグラフである。 [FIG. 3] FIG. 3 is a graph showing the waveform of the erasing power that changes in a stepwise manner.
[図 4]図 4は、同、光ディスク 140の領域を示す説明図である。 FIG. 4 is an explanatory diagram showing an area of the optical disc 140. FIG.
[図 5]図 5は、同、光ディスク装置の動作を示すフローチャートである。 FIG. 5 is a flowchart showing the operation of the optical disc apparatus.
[図 6]図 6は、同、光ディスク装置の動作を示すフローチャートである。 FIG. 6 is a flowchart showing the operation of the optical disc apparatus.
[図 7]図 7は、同、下地記録時におけるレーザーパワーの波形を示すグラフである。 [FIG. 7] FIG. 7 is a graph showing the laser power waveform during base recording.
[図 8]図 8は、本発明の実施形態 2の光ディスク装置の動作を示すフローチャートであ FIG. 8 is a flowchart showing the operation of the optical disk device according to the second embodiment of the present invention.
[図 9]図 9は、同、プロファイル化された変調度を示す説明図である。 FIG. 9 is an explanatory diagram showing the profiled modulation degree.
[図 10]図 10は、変調度と記録パワーの関係を示すグラフである。  FIG. 10 is a graph showing the relationship between the degree of modulation and recording power.
[図 11]図 11は、本発明の実施形態 3の光ディスク装置の動作を示すフローチャート である。  FIG. 11 is a flowchart showing an operation of the optical disc device according to the third embodiment of the present invention.
[図 12]図 12は、本発明の実施形態 4の記録再生装置の構成を示すブロック図である  FIG. 12 is a block diagram showing a configuration of a recording / reproducing apparatus according to Embodiment 4 of the present invention.
[図 13]図 13は、本発明の実施形態 5の記録再生装置の構成を示すブロック図である FIG. 13 is a block diagram showing a configuration of a recording / reproducing apparatus according to Embodiment 5 of the present invention.
[図 14]図 14は、本発明の実施形態 6の記録再生装置の構成を示すブロック図である FIG. 14 is a block diagram showing a configuration of a recording / reproducing apparatus according to Embodiment 6 of the present invention.
[図 15]図 15は、本発明の実施形態 6の記録再生装置の動作を示すフローチャートで ある。 FIG. 15 is a flowchart showing the operation of the recording / reproducing apparatus according to Embodiment 6 of the present invention.
[図 16]図 16は、本発明の実施形態 7の記録再生装置の構成を示すブロック図である  FIG. 16 is a block diagram showing a configuration of a recording / reproducing device according to Embodiment 7 of the present invention.
[図 17]図 17は、本発明の実施形態 8の記録再生装置の構成を示すブロック図である [図 18]図 18は、本発明の実施形態 9の記録再生装置の構成を示 図である FIG. 17 is a block diagram showing a configuration of a recording / reproducing apparatus according to Embodiment 8 of the present invention. FIG. 18 is a diagram showing a configuration of a recording / reproducing apparatus according to Embodiment 9 of the present invention.
[図 19]図 19は、従来の消去パワー OPCの処理を示すフローチャートである FIG. 19 is a flowchart showing a conventional erase power OPC process;
符号の説明 Explanation of symbols
100 光ピックアップ  100 optical pickup
101 LD  101 LD
102 受光素子  102 light receiving element
110 信号処理装置  110 Signal processor
111 RF信号検出手段  111 RF signal detection means
112 未記録 ·記録判別手段  112 Unrecorded
113 変調度算出手段  113 Modulation degree calculation means
114 システムコントローラー  114 System controller
115 記憶手段（関係式記憶手段）  115 Storage means (relational expression storage means)
116 下地記録パワー算出手段  116 Base recording power calculation means
117 最適記録パワー算出手段  117 Optimal recording power calculation means
118 階段発光処理手段  118 Stair emission process
119 レーザー駆動ドライバ  119 Laser driver
120 レーザーパワー検出手段  120 Laser power detection means
121 記録品質取得手段  121 Recording quality acquisition means
130 モーター  130 motor
140 光ディスク  140 Optical disc
141 ディスク管理領域  141 Disk management area
142 試し書き領域  142 Trial writing area
143 データ領域  143 Data area
200 光ディスク装置  200 Optical disk device
201 記憶手段  201 Memory means
202 バッテリー残量測定手段 203 駆動電源判別手段 202 Battery level measuring means 203 Drive power supply discrimination means
204 AC電源  204 AC power
205 ノ テリー  205 Notes
301 実行処理記憶手段  301 Execution processing storage means
302 録画設定判別手段  302 Recording setting discrimination means
400 光ディスク装置  400 Optical disk device
401 ディスク ID記憶手段  401 Disk ID storage means
402 ディスク Iひ晴報判別手段  402 Disc I
501 ディスク着脱情報判別手段  501 Disc attachment / detachment information discrimination means
601 有効期限記憶手段  601 Expiration date storage means
602 有効期限判別手段  602 Expiration date discrimination means
701 温度記憶手段  701 Temperature storage means
702 温度判別手段  702 Temperature discrimination means
発明を実施するための最良の形態  BEST MODE FOR CARRYING OUT THE INVENTION
[0010] 以下、本発明の実施形態について、図面を参照して説明する。なお、以下の各実 施形態において、他の実施形態と同様の機能を有する構成要素については同一の 符号を付して説明を省略する。  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following embodiments, constituent elements having the same functions as those of the other embodiments are denoted by the same reference numerals, and description thereof is omitted.
[0011] 《実施形態 1》  [0011] <Embodiment 1>
本発明の実施形態 1に係る光ディスク装置は、図 1に示すように、光ピックアップ 10 0、信号処理装置 110、およびモーター 130を備えている。  As shown in FIG. 1, the optical disc apparatus according to Embodiment 1 of the present invention includes an optical pickup 100, a signal processing device 110, and a motor 130.
[0012] 光ピックアップ 100は、レーザーダイオード（LD) 101、および受光素子 102を備え ている。 The optical pickup 100 includes a laser diode (LD) 101 and a light receiving element 102.
[0013] LD101は、光ディスク 140にレーザー光を発光する。  The LD 101 emits laser light to the optical disc 140.
[0014] 受光素子 102は、フォトディテクタ、および前光フォトディテクタを有する。フォトディ テクタは、光ディスク 140から反射される反射光を受光し、前光フォトディテクタは、 L D101の出力であるレーザー光自体を受光する。  The light receiving element 102 includes a photo detector and a front light photo detector. The photo detector receives the reflected light reflected from the optical disk 140, and the front photo detector receives the laser beam itself that is the output of the LD 101.
[0015] 信号処理装置 110は、 RF信号検出手段 111、未記録 ·記録判別手段 112、変調 度算出手段 113、システムコントローラー 114、記憶手段（関係式記憶手段） 115、下 地記録パワー算出手段 116、最適記録パワー算出手段 117、階段発光処理手段 11 8、レーザー駆動ドライバ 119、およびレーザーパワー検出手段 120を備えている。 信号処理装置 110は、集積回路によって構成されている。また、 RF信号検出手段 1 11、および変調度算出手段 113によって記録品質取得手段 121が構成されている。 [0015] The signal processing device 110 includes an RF signal detection unit 111, an unrecorded / recording discrimination unit 112, a modulation degree calculation unit 113, a system controller 114, a storage unit (relational expression storage unit) 115, A terrestrial recording power calculating means 116, an optimum recording power calculating means 117, a stair emission processing means 118, a laser driving driver 119, and a laser power detecting means 120 are provided. The signal processing device 110 is configured by an integrated circuit. The RF signal detection means 111 and the modulation degree calculation means 113 constitute a recording quality acquisition means 121.
[0016] RF信号検出手段 111は、光ピックアップ 100の受光素子 102によって光電変換さ れた電気信号から RF信号 (RF信号成分)を検出 (抽出)する。  The RF signal detection unit 111 detects (extracts) an RF signal (RF signal component) from the electrical signal photoelectrically converted by the light receiving element 102 of the optical pickup 100.
[0017] 未記録 ·記録判別手段 112は、 RF信号検出手段 111によって検出された RF信号 に基づいて、光ディスク 140が記録済みであるか未記録であるかを判別する。  The unrecorded / record discriminating unit 112 discriminates whether the optical disc 140 has been recorded or not recorded based on the RF signal detected by the RF signal detecting unit 111.
[0018] 変調度算出手段 113は、 RF信号検出手段 111によって検出された RF信号に基づ いて図 2に示す式によって導出される変調度 (記録品質の指標）を算出する。ここで、 RFpeakは RF信号のピーク電圧を示し、 RFbottomは RF信号のボトム電圧を示す。  Modulation degree calculation means 113 calculates a modulation degree (recording quality index) derived from the equation shown in FIG. 2 based on the RF signal detected by RF signal detection means 111. Here, RFpeak indicates the peak voltage of the RF signal, and RFbottom indicates the bottom voltage of the RF signal.
[0019] システムコントローラー 114は、変調度算出手段 113によって算出された変調度に 基づレ、て関係式を用いた演算を行!、、各手段を制御する。  The system controller 114 performs an operation using the relational expression based on the modulation degree calculated by the modulation degree calculation means 113 and controls each means.
[0020] 記憶手段 115は、変調度算出手段 113によって算出された変調度や、あらかじめ 実験等によって求められた変調度 ·記録パワー関係式 (記録品質 ·記録パワー関係 式)等を記憶する。  The storage unit 115 stores the modulation factor calculated by the modulation factor calculation unit 113, the modulation factor / recording power relational expression (recording quality / recording power relational expression) obtained in advance through experiments or the like.
[0021] 下地記録パワー算出手段 116は、変調度算出手段 113によって算出された変調度 に基づいて、記録パワーと消去パワーとを算出（決定)する。これらの値は、下地記録 に用いられる。  The base recording power calculation unit 116 calculates (determines) recording power and erasing power based on the modulation degree calculated by the modulation degree calculation unit 113. These values are used for base recording.
[0022] 最適記録パワー算出手段 117は、変調度算出手段 113によって算出された変調度 に基づいて、最適記録パワーと最適消去パワーを算出（決定)する。算出された最適 記録パワーと最適消去パワーは、データ領域におけるデータ記録に用いられる。  The optimum recording power calculation unit 117 calculates (determines) the optimum recording power and the optimum erasing power based on the modulation degree calculated by the modulation degree calculation unit 113. The calculated optimum recording power and optimum erasing power are used for data recording in the data area.
[0023] 階段発光処理手段 118は、記録パワーの値および消去パワーの値を出力する。消 去パワーは、図 3に示すように階段状に変化する。記録パワーも、消去パワーと同様 に階段状に変化する。  The staircase light emission processing means 118 outputs a recording power value and an erasing power value. As shown in Fig. 3, the erasing power changes stepwise. The recording power also changes in a stepped manner, similar to the erasing power.
[0024] レーザー駆動ドライバ 119は、下地記録パワー算出手段 116、最適記録パワー算 出手段 117、および階段発光処理手段 118によって算出または出力された値に基づ いて、光ピックアップ 100の LD101を駆動する電流を制御する。 [0025] レーザーパワー検出手段 120は、光ピックアップ 100の受光素子 102によって受光 されたレーザー光のレーザーパワー値を検出する。 [0024] The laser drive driver 119 drives the LD 101 of the optical pickup 100 based on the values calculated or output by the base recording power calculation means 116, the optimum recording power calculation means 117, and the staircase light emission processing means 118. Control the current. The laser power detection means 120 detects the laser power value of the laser light received by the light receiving element 102 of the optical pickup 100.
[0026] モーター 130は、システムコントローラー 114によって指定された光ディスク 140上 の領域に光ピックアップ 100を移動させる。  The motor 130 moves the optical pickup 100 to an area on the optical disc 140 designated by the system controller 114.
[0027] 光ディスク 140は、図 4に示すように、ディスク管理領域 141、試し書き領域 142、お よびデータ領域 143を備えて!/、る。  As shown in FIG. 4, the optical disc 140 includes a disc management area 141, a test writing area 142, and a data area 143.
[0028] ここで、図 1のように構成された光ディスク装置の動作について、図 5のフローチヤ一 トを参照して説明する。 （S IOO:！)〜（S1007)の動作は、記録用の最適消去パワー を算出するための消去パワー OPCである。  Here, the operation of the optical disc apparatus configured as shown in FIG. 1 will be described with reference to the flowchart of FIG. The operations from (S IOO :!) to (S1007) are erase power OPCs for calculating the optimum erase power for recording.
[0029] (S1001)システムコントローラー 114力 モーター 130を制御することによって、光 ピックアップ 100を光ディスク 140上のデータ領域 143におけるデータを実際に記録 する領域 (以下、「ターゲット記録領域」と呼ぶ。）に移動させる。そして、 RF信号検出 手段 111が、ターゲット記録領域から反射されるレーザー光を光電変換した電気信 号から RF信号成分を検出し、未記録'記録判別手段 112が、この検出された信号に 基づいて、ターゲット記録領域が記録済みであるか未記録であるかを判別する。ター ゲット記録領域が未記録である場合には（S 1002)に進み、ターゲット記録領域が記 録済みである場合には（S1003)に進む。  (S1001) System Controller 114 Force By controlling the motor 130, the optical pickup 100 is used as an area for actually recording data in the data area 143 on the optical disc 140 (hereinafter referred to as “target recording area”). Move. Then, the RF signal detecting means 111 detects an RF signal component from the electric signal obtained by photoelectrically converting the laser light reflected from the target recording area, and the unrecorded'recording discriminating means 112 is based on the detected signal. Then, it is determined whether the target recording area is recorded or unrecorded. If the target recording area is not recorded, the process proceeds to (S1002). If the target recording area is recorded, the process proceeds to (S1003).
[0030] (S1002)光ディスク装置は、光ディスク内周のディスク管理領域 141に記録されて いる光ディスクメーカー推奨パワー情報を読み出す。この光ディスクメーカー推奨パ ヮー情報には、光ディスクメーカー推奨の記録パワーと消去パワー（推奨パワー）が 含まれる。システムコントローラー 114は、光ディスクメーカー推奨のこれらのパワーを 、下地記録パワーとして設定する。  (S1002) The optical disc apparatus reads optical disc manufacturer recommended power information recorded in the disc management area 141 on the inner periphery of the optical disc. This optical disc manufacturer's recommended performance information includes optical disc manufacturer's recommended recording power and erasing power (recommended power). The system controller 114 sets these powers recommended by the optical disc manufacturer as the base recording power.
[0031] (S1003)光ディスク装置は、ターゲット記録領域の変調度を測定する。  (S1003) The optical disc apparatus measures the degree of modulation in the target recording area.
[0032] (S1004)下地記録パワー算出手段 116が、（S1003)において測定された変調度 に対応した記録パワーを、事前に記憶手段 115に格納された変調度 ·記録パワー関 係式を用いて算出する。また、算出した記録パワーに基づいて、消去パワーを算出 する。消去パワーは、消去パワーと記録パワーとが所定の比となるように算出される。 そして、システムコントローラー 114が、算出された記録パワーと消去パワーを下地記 録パワーとして設定する。 (S1004) The base recording power calculation means 116 uses the modulation power / recording power relational expression stored in the storage means 115 in advance to calculate the recording power corresponding to the modulation power measured in (S1003). calculate. Also, the erasing power is calculated based on the calculated recording power. The erasing power is calculated so that the erasing power and the recording power have a predetermined ratio. The system controller 114 then stores the calculated recording power and erasing power in the base memory. Set as recording power.
[0033] ここで、（S 1003)および（S1004)における処理の詳細について、図 6のフローチヤ ートを参照して説明する。なお、（S1003)および（S 1004)における処理が前処理に 相当する。 Here, details of the processing in (S 1003) and (S 1004) will be described with reference to the flowchart in FIG. The processing in (S1003) and (S1004) corresponds to preprocessing.
[0034] (S2001)システムコントローラー 114力 モーター 130を制御することによって、タ 一ゲット記録領域における記録開始位置 (記録品質取得位置）に光を照射する位置 に光ピックアップ 100を移動させる。  (S2001) System Controller 114 Force By controlling the motor 130, the optical pickup 100 is moved to a position where light is irradiated to the recording start position (recording quality acquisition position) in the target recording area.
[0035] (S2002)光ピックアップ 100力 （S2001)における移動後の位置で、上記記録開 始位置に光を照射し、光ディスク 140からの反射光を受光素子 102によって受光し、 電気信号（出力信号）に変換する。そして、 RF信号検出手段 111が、変換された電 気信号から RF信号を検出し、変調度算出手段 113が、検出された RF信号に基づい て変調度を算出する。算出される変調度は、光ピックアップ 100による光の照射位置 、すなわち、ターゲット記録領域の記録開始位置における変調度である。  (S2002) At the position after the movement in optical pickup 100 force (S2001), the recording start position is irradiated with light, and the reflected light from the optical disk 140 is received by the light receiving element 102, and an electric signal (output signal) ). Then, the RF signal detection unit 111 detects an RF signal from the converted electric signal, and the modulation degree calculation unit 113 calculates the modulation degree based on the detected RF signal. The calculated modulation degree is the modulation position at the light irradiation position by the optical pickup 100, that is, the recording start position of the target recording area.
[0036] (S2003)記憶手段 115が、（S2002)において算出された変調度を記憶する。  (S2003) The storage unit 115 stores the modulation degree calculated in (S2002).
[0037] (S2004)システムコントローラー 114力 あらかじめ実験等により求められている変 調度 ·記録パワー関係式を、記憶手段 115から読み出す。  [0037] (S2004) System controller 114 force Reads from the storage means 115 the modulation degree / recording power relational expression obtained in advance by experiments or the like.
[0038] (S2005) (S2002)において算出された変調度力 記憶手段 115から読み出され  [0038] (S2005) The modulation power calculated in (S2002) is read from the storage means 115.
[0039] (S2006)下地記録パワー算出手段 116が、（S2005)において読み出された変調 度に対応する記録パワーおよび消去パワーを、 (S2004)において読み出された変 調度 ·記録パワー関係式によって算出する。そして、算出された記録パワーおよび消 去パワーを、システムコントローラー 114が、下地記録パワーとして設定する。 [0039] (S2006) The base recording power calculation means 116 calculates the recording power and the erasing power corresponding to the modulation degree read in (S2005) by the modulation degree / recording power relational expression read in (S2004). calculate. Then, the system controller 114 sets the calculated recording power and erasing power as the base recording power.
[0040] 変調度'記録パワー関係式は、変調度と記録パワーとの関係を示すものであり、事 前に基準ディスクを用いた測定によって求められ、記憶手段 115に格納されている。 この変調度'記録パワー関係式を用いて算出された記録パワーおよび消去パワーに よって試し書き領域 142に下地記録を行うと、試し書き領域 142の変調度が（S2002 )において算出された変調度と同じになる。下地記録パワー算出手段 116は、この変 調度 ·記録パワー関係式を用いることによって、試し書き領域 142の変調度を（S200 2)において算出された変調度と同じにするのに適した下地記録用の記録パワーを算 出する。 [0040] The modulation degree'recording power relational expression indicates the relationship between the modulation degree and the recording power, and is obtained by measurement using a reference disk in advance and stored in the storage means 115. When base recording is performed on the trial writing area 142 with the recording power and the erasing power calculated using this modulation degree'recording power relational expression, the modulation degree of the trial writing area 142 is equal to the modulation degree calculated in (S2002). Be the same. The background recording power calculation means 116 uses this modulation degree / recording power relational expression to calculate the modulation degree of the trial writing area 142 (S200). Calculate the recording power for base recording suitable for the same modulation factor calculated in 2).
[0041] (S1005) (S 1002)または（S2006)において下地記録パワーとして設定された記 録パワーおよび消去パワーがレーザー駆動ドライバ 119に設定され、これらの記録パ ヮーおよび消去パワーによって、光ディスク 140の試し書き領域 142に下地記録が行 われる。下地記録時におけるレーザーパワーの波形は、例えば、図 7に示すようにな る。つまり、信号処理装置 110は、下地記録パワーとして設定された記録パワーおよ び消去パワーによって試し書き領域 142に下地記録が行われるように光ピックアップ 100を制御する。  [0041] (S1005) The recording power and the erasing power set as the base recording power in (S1002) or (S2006) are set in the laser drive driver 119, and the recording power and erasing power of the optical disc 140 are Base recording is performed in the trial writing area 142. The laser power waveform during base recording is as shown in Fig. 7, for example. That is, the signal processing device 110 controls the optical pickup 100 so that the base recording is performed in the test writing area 142 with the recording power and the erasing power set as the base recording power.
[0042] (SIOO:！)〜（S 1005)の動作により、試し書き領域の記録品質（変調度）は、ターグ ット記録領域と同じ記録品質（同じ変調度）となる。  [0042] By the operations of (SIOO :!) to (S1005), the recording quality (modulation degree) of the test writing area becomes the same recording quality (same modulation degree) as that of the target recording area.
[0043] (S1006)光ディスク装置は、（S 1005)において下地記録が行われた領域に、図 3 に示すように消去パワーを階段状に変化させながら消去を行う。この消去動作時、レ 一ザ一駆動ドライバ 119は、階段発光処理手段 118によって出力された消去パワー の値に応じて、 LD101を駆動する電流を制御する。つまり、信号処理装置 110は、 ( S 1005)において下地記録が行われた領域に階段状に変化する消去パワーによる 消去が行われるように光ピックアップ 100を制御する。  (S1006) The optical disc apparatus performs erasing while changing the erasing power stepwise as shown in FIG. 3 in the area where the base recording is performed in (S1005). During this erasing operation, the laser driver driver 119 controls the current for driving the LD 101 according to the value of the erasing power output by the staircase light emission processing means 118. That is, the signal processing apparatus 110 controls the optical pickup 100 so that erasure is performed with the erasing power that changes stepwise in the area where the background recording is performed in (S1005).
[0044] (S1007)最適記録パワー算出手段 117は、各消去パワーによって消去された領 域の変調度に基づいて、最適消去パワーを算出する。  (S1007) The optimum recording power calculating means 117 calculates the optimum erasing power based on the modulation degree of the area erased by each erasing power.
[0045] このように、（S 1002)または（S2006)において下地記録パワーとして設定された 記録パワーおよび消去パワーによって下地記録が行われた領域力 最適消去パヮ 一の算出に用いられる。  [0045] In this way, it is used to calculate the area force optimum erasure rate at which the base recording is performed by the recording power and the erasing power set as the base recording power in (S1002) or (S2006).
[0046] (S1008)光ディスク装置は、最適記録パワーを求める記録パワー OPCを行う。  (S1008) The optical disc apparatus performs a recording power OPC for obtaining an optimum recording power.
[0047] (SIOO:！)〜（S 1008)の動作は、光ディスク 140へのデータの記録に先立って行 われ、これらの動作が終了すると、本番のデータ記録が行われる。  [0047] The operations (SIOO :!) to (S1008) are performed prior to data recording on the optical disc 140. When these operations are completed, actual data recording is performed.
[0048] このように、本実施形態の光ディスク装置は、光ディスク 140へのデータの記録に先 立って、ターゲット記録領域と記録品質を同じにした試し書き領域にお!/、て複数種類 の消去パワーを用いて消去を行うことにより、最適消去パワーを算出する。したがって 、 DVD— RW2層ディスク等、消去パワーのマージンが少ない記録媒体に対しても、 高!/、記録品質で記録を行える。 [0048] As described above, the optical disc apparatus according to the present embodiment has a plurality of types of erasures in the trial writing area having the same recording quality as that of the target recording area before the data is recorded on the optical disc 140. The optimum erasing power is calculated by erasing using the power. Therefore Even DVD-RW double-layer discs and other recording media with low margins for erasing power can be recorded with high recording quality.
[0049] 《実施形態 1の変形例》  <Modification of Embodiment 1>
なお、データ領域における複数の箇所の変調度が算出され、試し書き領域 142の 変調度がそれらの変調度の平均となるように、下地記録パワー算出手段 116が記録 パワーおよび消去パワーを算出するようにしてもよい。例えば、データ領域 143を複 数の zoneに分割し、それら複数の zone毎に先頭の変調度を算出し、算出した変調 度の平均を算出する処理が、（S 1003)における処理の代わりに行われ、その平均に 基づいて、下地記録用の記録パワーが算出されるようにしてもよい。データ領域 143 を分割する方法としては、等分割や、ディスク管理領域 141に記録されている各回の 記録開始位置を示す情報に基づ!/、て、各 zoneが 1回の記録の開始から終了までの 領域となるように分割する方法がある。  The base recording power calculation means 116 calculates the recording power and the erasing power so that the modulation degrees at a plurality of locations in the data area are calculated and the modulation degree of the test writing area 142 is the average of the modulation degrees. It may be. For example, the process of dividing the data area 143 into a plurality of zones, calculating the top modulation degree for each of the plurality of zones, and calculating the average of the calculated modulation degrees is performed instead of the process in (S 1003). However, the recording power for base recording may be calculated based on the average. The data area 143 can be divided into equal divisions or based on the information indicating the recording start position recorded each time in the disk management area 141! /, And each zone ends from the start of one recording. There is a method to divide the area so that
[0050] また、（S 1003)においては、ターゲット記録領域の記録開始位置における変調度 を測定していた力 測定位置は記録開始位置に限られない。例えば、光ディスク 140 の外周における変調度が測定されるようにしてもよい。一般に、光ディスク 140の外周 は光ディスクの変形の影響が大きレ、。  [0050] In (S1003), the force measurement position at which the degree of modulation at the recording start position in the target recording area is measured is not limited to the recording start position. For example, the degree of modulation at the outer periphery of the optical disc 140 may be measured. In general, the outer circumference of the optical disc 140 is greatly affected by the deformation of the optical disc.
[0051] 《実施形態 2》  [0051] <Embodiment 2>
本発明の実施形態 2に係る光ディスク装置は、実施形態 1の光ディスク装置のシス テムコントローラー 114とは異なる制御を行うシステムコントローラー 114を備えている 1S それ以外の構成については、実施形態 1と同様であるため、説明を省略する。  The optical disk apparatus according to Embodiment 2 of the present invention includes a system controller 114 that performs control different from the system controller 114 of the optical disk apparatus of Embodiment 1. 1S Other configurations are the same as in Embodiment 1. Therefore, the description is omitted.
[0052] 本実施形態に係る光ディスク装置は、図 5の（S 1001)および（S 1002)の処理につ いては、実施形態 1と同様の処理を行う。以下、（S 1003)以降における処理の代わり に行われる処理について図 8のフローチャートを参照して説明する。  The optical disc apparatus according to the present embodiment performs the same processing as that of the first embodiment for the processing of (S 1001) and (S 1002) of FIG. Hereinafter, processing performed instead of the processing in (S1003) and after will be described with reference to the flowchart of FIG.
[0053] (S3001)システムコントローラー 114力 光ディスク 140上のデータ領域 143 (記憶 領域)を zone；!〜 n (分割領域）に等分割する。ここで、 kは 1であるとする。  (S3001) System controller 114 force The data area 143 (storage area) on the optical disk 140 is equally divided into zones;! To n (divided areas). Here, k is assumed to be 1.
[0054] (S3002)システムコントローラー 114力 S、モーター 130を制御することによって、光 ピックアップ 100を、 zonekの先頭 (記録品質取得位置）に光を照射する位置に移動 させる。そして、光ピックアップ 100は、その先頭に光を照射する。そして、光ピックァ ップ 100の受光素子 102が、光ディスク 140からの反射光を受光する。 (S3002) By controlling the system controller 114 force S and the motor 130, the optical pickup 100 is moved to a position where light is irradiated to the head of the zonek (recording quality acquisition position). Then, the optical pickup 100 irradiates the head with light. And optical picker The light receiving element 102 of the top 100 receives the reflected light from the optical disc 140.
[0055] (S3003) (S3002)で受光された反射光が電気信号に変換され、 RF信号検出手 段 111が、その電気信号から RF信号を検出する。そして、変調度算出手段 113が、 検出された RF信号に基づいて変調度を算出する。 (S3003) The reflected light received in (S3002) is converted into an electric signal, and the RF signal detection unit 111 detects the RF signal from the electric signal. Then, the modulation degree calculation means 113 calculates the modulation degree based on the detected RF signal.
[0056] (S3004)システムコントローラー 114が、（S3003)において算出された変調度を、 zonekのアドレスと関連づけて記憶手段 115に記憶させる。 (S3004) The system controller 114 stores the modulation degree calculated in (S3003) in the storage means 115 in association with the zonek address.
[0057] (S3005)k≠nの場合には処理力 S3006)に進み、 k = nの場合には処理力 S3[0057] (S3005) If k ≠ n, proceed to processing power S3006), and if k = n, processing power S3
007)に進む。 Go to 007).
[0058] (S3002)〜（S3005)の処理力 zonel〜！！について行われることにより、図 9に示 すように、変調度がプロファイル化される。  [0058] (S3002) ~ (S3005) processing power zonel ~! ! As shown in Fig. 9, the modulation degree is profiled.
[0059] (S3006) kに 1が加算される。 [0059] (S3006) 1 is added to k.
[0060] (S3007)システムコントローラー 114力 モーター 130を制御することによって、光 ピックアップ 100を試し書き領域 142に移動させる。  (S3007) System Controller 114 Force By controlling the motor 130, the optical pickup 100 is moved to the test writing area 142.
[0061] (S3008)階段発光処理手段 118が、（S3003)において算出された各 zoneの変 調度に対応する記録パワーを、事前に記憶手段 115に格納されている変調度 ·記録 ノ ヮ一関係式を用いて算出する。算出された記録パワーはレーザー駆動ドライバ 11 9に順次設定され、階段状に変化する記録パワーによって記録が行われる。  [0061] (S3008) The stair emission processing means 118 stores the recording power corresponding to the modulation degree of each zone calculated in (S3003) with the modulation degree / recording value stored in the storage means 115 in advance. Calculate using the formula. The calculated recording power is sequentially set in the laser driver 119, and recording is performed with the recording power that changes in a stepwise manner.
[0062] (S3009) (S3008)における記録中に、レーザーパワー検出手段 120が記録パヮ 一と消去パワーとを検出し、検出された記録パワーと消去パワーとが記憶手段 115に 格納される。  (S3009) During recording in (S3008), the laser power detection means 120 detects the recording power and the erasing power, and the detected recording power and erasing power are stored in the storage means 115.
[0063] (S3010) RF信号検出手段 111が、（S3008)において記録された領域からの反 射光を変換した電気信号に基づく RF信号を検出し、変調度算出手段 113が、この R F信号に基づいて変調度を算出し、算出された変調度が記憶手段 115に格納される  (S3010) RF signal detecting means 111 detects an RF signal based on the electrical signal obtained by converting the reflected light from the area recorded in (S3008), and modulation degree calculating means 113 is based on the RF signal. The modulation degree is calculated by using the storage means 115.
[0064] (S3011)システムコントローラー 114が、 （S3009)において検出された記録パヮ 一の値と、 (S3010)において算出された変調度の値とを記憶手段 115から読み出し 、図 10に示すように近似を行うことによって、変調度 ·記録パワー関係式を算出し、最 新の変調度 ·記録パワー関係式として、記憶手段 115に記憶させる。 [0065] (S3012) (S3011)において算出された変調度 ·記録パワー関係式力 記憶手段 115から読み出される。 (S3011) The system controller 114 reads out the recording unit value detected in (S3009) and the modulation degree value calculated in (S3010) from the storage means 115, as shown in FIG. By performing the approximation, the modulation degree / recording power relational expression is calculated and stored in the storage unit 115 as the latest modulation degree / recording power relational expression. (S3012) The degree of modulation calculated in (S3011) · recording power relational expression force is read from the storage means 115.
[0066] (S3013) (S3004)において記憶された変調度力 記憶手段 115から読み出され  [0066] (S3013) The modulation power stored in (S3004) is read from storage means 115.
[0067] (S3014)下地記録パワー算出手段 116が、 zone毎に、（S3013)において読み出 された当該 zoneの変調度に対応する下地記録用の記録パワーを、 (S3011)におい て求められた変調度 ·記録パワー関係式を用いて算出する。つまり、下地記録パワー 算出手段 116が、 zone毎に、試し書き領域 142の変調度を、読み出された当該 zon eの変調度と同じにするのに適した記録パワーを算出する。また、算出した記録パヮ 一に基づいて、消去パワーを算出する。そして、システムコントローラー 114が、算出 された記録パワーおよび消去パワーを下地記録パワーとして設定する。 [0067] (S3014) The base recording power calculation means 116 obtains the recording power for base recording corresponding to the modulation degree of the zone read in (S3013) in (S3011) for each zone. Modulation rate · Calculated using the recording power relational expression. That is, the base recording power calculation unit 116 calculates a recording power suitable for making the modulation degree of the test writing area 142 the same as the read modulation degree of the zone for each zone. Further, the erasing power is calculated based on the calculated recording capacity. Then, the system controller 114 sets the calculated recording power and erasing power as the base recording power.
[0068] (S3015) (S3014)において決定された zone毎の下地記録用の記録パワーがレ 一ザ一駆動ドライバ 119に設定され、これらの記録パワーによって光ディスク 140の 試し書き領域 142に下地記録が行われる。つまり、信号処理装置 110は、下地記録 パワーとして設定された記録パワーおよび消去パワーによって試し書き領域 142に 下地記録が行われるように光ピックアップ 100を制御する。  [0068] (S3015) The recording power for base recording for each zone determined in (S3014) is set in the laser driver 119, and the base recording is performed in the test writing area 142 of the optical disc 140 by these recording powers. Done. That is, the signal processing device 110 controls the optical pickup 100 so that the base recording is performed in the test writing area 142 with the recording power and the erasing power set as the base recording power.
[0069] (S300:！)〜（S3015)の動作により、試し書き領域に、各 zoneと同じ変調度の領域 力できる。なお、（S300:！)〜（S3014)における処理が前処理に相当する。  [0069] By the operations (S300 :!) to (S3015), the area of the same modulation degree as each zone can be applied to the test writing area. The processing in (S300 :!) to (S3014) corresponds to preprocessing.
[0070] (S300:！)〜（S3015)の動作が終了すると、光ディスク装置は、各 zoneについて、 試し書き領域 142におけるその zoneと同じ変調度にされた領域に対して消去パワー を階段状に変化させて消去を行うことにより、最適消去パワーを算出する。  [0070] When the operations of (S300 :!) to (S3015) are completed, the optical disc apparatus increases the erasing power in a stepwise manner for each zone in the test writing area 142 with the same modulation degree as that zone. The optimum erasing power is calculated by performing erasing while changing.
[0071] このように、本実施形態の光ディスク装置は、実施形態 1と同様に、光ディスク 140 へのデータの記録に先立ってデータ領域 143の記録品質に応じた最適消去パワー を算出することができるので、 DVD— RW2層ディスク等、消去パワーのマージンが 少ない記録媒体に対しても、高い記録品質で記録を行える。さらに、最適消去パワー を、 zone毎に算出するので、データ領域 143に記録品質の異なる複数の領域が存 在する場合でも、光ディスク 140の全面に対して高い記録品質で記録を行える。  As described above, the optical disc apparatus according to the present embodiment can calculate the optimum erasing power according to the recording quality of the data area 143 prior to the recording of data onto the optical disc 140, as in the first embodiment. Therefore, it is possible to record with high recording quality even on recording media with a small margin of erasing power, such as DVD-RW double-layer discs. Furthermore, since the optimum erasing power is calculated for each zone, even when a plurality of areas having different recording qualities exist in the data area 143, recording can be performed with high recording quality on the entire surface of the optical disc 140.
[0072] 《実施形態 2の変形例》 なお、上記実施形態においては、（S3001)においてデータ領域 143を等分割して いたが、記憶領域の分割方法は等分割に限らず、光ディスク 140内周のディスク管 理領域 141に記録されて!/、る各回の記録の記録開始位置を示す情報に基づ!/、て、 データ領域 143を分割するようにしてもよい。ディスク管理領域 141には、 1回の記録 が行われる毎に、その記録の記録開始位置を示す情報が記録されるので、その情報 に基づいて、各 zoneが 1回の記録の開始から終了までの領域となるようにデータ領 域を分害 IJすること力でさる。 << Modification of Embodiment 2 >> In the above embodiment, the data area 143 is equally divided in (S3001), but the method of dividing the storage area is not limited to equal division, and is recorded in the disk management area 141 on the inner periphery of the optical disc 140! The data area 143 may be divided based on information indicating the recording start position of each recording. Each time one recording is performed, information indicating the recording start position of the recording is recorded in the disk management area 141. Therefore, each zone is recorded from the start to the end of one recording based on the information. It is the power to defragment the data area so that it becomes an area.
[0073] また、（S3002)〜（S3006)の処理においては、 zonel〜！！のすベてについて、変 調度が RF信号に基づいて算出されるようになっている。し力、し、 zonel〜nのうちの 一部の 2つ以上の zoneについてのみ、変調度が RF信号に基づいて算出され、他の zoneの変調度が、算出された変調度を用いた補間によって求められるようにしてもよ い。例えば、一部の zoneの変調度に基づいて、アドレスと変調度との対応を示す近 似式が求められ、その近似式に基づいて他の zoneの変調度が求められるようにして もよい。そして、補間によって変調度が求められた zoneについては、下地記録パワー 算出手段 116が、補間によって求めた変調度に基づいて、記録パワーおよび消去パ ヮーを算出するようにしてもよい。  [0073] In the processes of (S3002) to (S3006), zonel ~! ! In all cases, the degree of modulation is calculated based on the RF signal. The modulation degree is calculated based on the RF signal only for some two or more zones of zonel to n, and the modulation degrees of the other zones are interpolated using the calculated modulation degrees. May be required by For example, an approximation expression indicating the correspondence between the address and the modulation degree may be obtained based on the modulation degree of a part of the zones, and the modulation degree of other zones may be obtained based on the approximate expression. Then, for the zone for which the modulation degree is obtained by interpolation, the base recording power calculation means 116 may calculate the recording power and the erasing power based on the modulation degree obtained by interpolation.
[0074] また、上記実施形態 2の光ディスク装置が、（S3007)〜（S3011)の変調度'記録 ノ^ー関係式を算出する処理を行なわず、あらかじめ記憶手段 115に記憶された変 調度 ·記録パワー関係式を用いるようにしてもよい。  In addition, the optical disk apparatus of the second embodiment does not perform the process of calculating the modulation degree'recording relational expression in (S3007) to (S3011), and the modulation degree stored in the storage unit 115 in advance A recording power relational expression may be used.
[0075] また、変調度が測定される各 zoneにおける領域は、先頭に限られない。  [0075] Further, the area in each zone where the modulation factor is measured is not limited to the top.
[0076] 《実施形態 3》  [Embodiment 3]
本発明の実施形態 3に係る光ディスク装置は、実施形態 1の光ディスク装置のシス テムコントローラー 114とは異なる制御を行うシステムコントローラー 114を備えている 。それ以外の構成については、実施形態 1と同様であるため、説明を省略する。  The optical disk apparatus according to Embodiment 3 of the present invention includes a system controller 114 that performs control different from the system controller 114 of the optical disk apparatus of Embodiment 1. Other configurations are the same as those in the first embodiment, and thus description thereof is omitted.
[0077] 本実施形態の光ディスク装置は、データ領域において消去パワー OPCを行うこと により、図 5における（S 1003)および（S 1004)の処理を行わずに、適当な消去パヮ 一を求めるものである。  [0077] The optical disc apparatus of the present embodiment obtains an appropriate erase pattern without performing the processing of (S1003) and (S1004) in Fig. 5 by performing erase power OPC in the data area. is there.
[0078] ここで、本実施形態の光ディスク装置の動作について、図 11のフローチャートを参 照して説明する。 （S400:！)〜（S4006)の動作は、記録用の最適消去パワーを算出 するための消去パワー OPCである。 Here, referring to the flowchart of FIG. 11, regarding the operation of the optical disk apparatus of the present embodiment. This will be explained. The operations from (S400 :!) to (S4006) are erase power OPCs for calculating the optimum erase power for recording.
[0079] (S4001)システムコントローラー 114力 モーター 130を制御することによって、光 ピックアップ 100を光ディスク 140上におけるデータを実際に記録する領域 (以下、「 ターゲット記録領域」と呼ぶ。 )に移動させる。そして、 RF信号検出手段 111が、ター ゲット記録領域から反射されるレーザー光を光電変換した電気信号から RF信号成分 を検出し、未記録 ·記録判別手段 112が、この検出された信号に基づいて、ターゲッ ト記録領域が記録済みであるか未記録であるかを判別する。ターゲット記録領域が未 記録である場合には（S4002)に進み、ターゲット記録領域が記録済みである場合に (ま（S4004 こ進む。 (S4001) System Controller 114 Force By controlling the motor 130, the optical pickup 100 is moved to an area for actually recording data on the optical disc 140 (hereinafter referred to as “target recording area”). Then, the RF signal detecting means 111 detects an RF signal component from the electrical signal obtained by photoelectrically converting the laser light reflected from the target recording area, and the unrecorded / recording discriminating means 112 is based on the detected signal. Then, it is determined whether the target recording area is recorded or not recorded. If the target recording area has not been recorded, the process proceeds to (S4002), and if the target recording area has been recorded (the process proceeds to S4004).
[0080] (S4002)光ディスク装置は、光ディスク内周のディスク管理領域に記録されている 光ディスクメーカー推奨パワー情報を読み出す。この光ディスクメーカー推奨パワー 情報には、光ディスクメーカー推奨の記録パワーと消去パワーが含まれる。  (S4002) The optical disc apparatus reads optical disc manufacturer recommended power information recorded in the disc management area on the inner periphery of the optical disc. This optical disc manufacturer recommended power information includes the optical disc manufacturer's recommended recording power and erasing power.
[0081] (S4003)光ディスクメーカー推奨の記録パワーと消去パワー力 下地記録パワーと して設定され、光ディスク装置がこれらのパワーを用いて光ディスク 140の下地記録 を行う。この下地記録は、光ディスク 140の試し書き領域 142またはデータ領域 143 で行われる。そして、システムコントローラー 114は、光ピックアップ 100の位置を、下 地記録が行われた領域にレーザー光を照射する位置にする。  (S4003) Recording power and erasing power recommended by the optical disc manufacturer are set as the base recording power, and the optical disc apparatus performs base recording on the optical disc 140 using these powers. This base recording is performed in the test writing area 142 or the data area 143 of the optical disc 140. Then, the system controller 114 sets the position of the optical pickup 100 to a position where the laser beam is irradiated to the area where the ground recording is performed.
[0082] (S4004)システムコントローラー 114は、光ピックアップ 100の位置を、ターゲット記 録領域にレーザー光を照射する位置に留める。  (S4004) The system controller 114 keeps the position of the optical pickup 100 at a position where the target recording area is irradiated with laser light.
[0083] (S4005)光ディスク装置は、消去パワーを階段状に変化させながら消去を行う。こ の消去は、（S4001)においてターゲット記録領域が記録済みと判別された場合には 、ターゲット記録領域に対して行われ、（S4001)においてターゲット記録領域が未記 録と判別された場合には、（S4003)における下地記録が行われた領域に対して行 われる。  (S4005) The optical disc apparatus performs erasing while changing the erasing power stepwise. This erasure is performed on the target recording area when it is determined that the target recording area has been recorded in (S4001), and when the target recording area is determined to be unrecorded in (S4001). , (S4003) is performed on the area where the background recording is performed.
[0084] (S4006)最適記録パワー算出手段 117は、各消去パワーによって消去された領 域の変調度に基づいて、最適消去パワーを算出する。  (S4006) The optimum recording power calculating means 117 calculates the optimum erasing power based on the modulation degree of the area erased by each erasing power.
[0085] (S4007)光ディスク装置は、適当な記録パワーを求める記録パワー OPCを行う。 [0086] (S4001)〜（S4007)の動作は、光ディスク 140へのデータの記録に先立って行 われ、この動作が終了すると、本番のデータ記録が行われる。 (S4007) The optical disc apparatus performs recording power OPC to obtain an appropriate recording power. [0086] The operations (S4001) to (S4007) are performed prior to data recording on the optical disc 140, and when this operation is completed, actual data recording is performed.
[0087] このように、本実施形態の光ディスク装置は、光ディスク 140へのデータの記録に先 立ってターゲット記録領域の品質に応じた最適消去パワーを算出することができるの で、 DVD— RW2層ディスク等、消去パワーのマージンが少ない記録媒体に対しても 、高い記録品質で記録を行える。また、ターゲット記録領域が記録済みであった場合 、ターゲット記録領域に対して消去パワーを変化させながら消去を行うので、試し書き 領域 142の変調度をターゲット記録領域の変調度に近づけるために試し書き領域 14 2に対して下地記録を行う場合よりも、短時間で消去パワーを算出できる。  As described above, the optical disc apparatus according to the present embodiment can calculate the optimum erasing power according to the quality of the target recording area prior to data recording on the optical disc 140. Even a recording medium such as a disk with a small erasing power margin can be recorded with high recording quality. In addition, if the target recording area has been recorded, erasing is performed while changing the erasing power with respect to the target recording area, so trial writing is performed in order to bring the modulation degree of the trial writing area 142 close to the modulation degree of the target recording area. The erasing power can be calculated in a shorter time than when the background recording is performed on the area 142.
[0088] 《実施形態 4》  [0088] Embodiment 4
本発明の実施形態 4に係る記録再生装置は、図 12に示すように、光ディスク装置 2 00、記憶手段 201、バッテリー残量測定手段 202、および駆動電源判別手段 203を 備えている。この記録再生装置は、 AC (Alternating Current)電源 204およびバッテ リー 205を駆動電源として使用できる。また、この記録再生装置は、パソコンや光ディ スクレコーダーに設けられる。  As shown in FIG. 12, the recording / reproducing apparatus according to Embodiment 4 of the present invention includes an optical disk device 200, a storage unit 201, a battery remaining amount measuring unit 202, and a drive power source determining unit 203. This recording / reproducing apparatus can use an alternating current (AC) power source 204 and a battery 205 as a driving power source. In addition, this recording / reproducing apparatus is provided in a personal computer or an optical disk recorder.
[0089] 光ディスク装置 200は、実施形態 1の信号処理装置 110のシステムコントローラー 1 14とは異なる制御を行うシステムコントローラー 114を備えている力 それ以外の構 成については、実施形態 1の光ディスク装置と同様である。光ディスク装置 200は、光 ディスク 140へのデータ記録に先立って消去パワー OPCを実施する際、実施形態 1 の光ディスク装置による図 5の（S IOO:！)〜（S1007)における消去パワーを求める処 理 (以下、「第 1の処理」と呼ぶ。）、および実施形態 2の光ディスク装置による消去パ ヮーを求める処理（以下、「第 2の処理」と呼ぶ。）のうちのいずれかを選択して実行す るようになっている。  The optical disk apparatus 200 has a system controller 114 that performs control different from the system controller 114 of the signal processing apparatus 110 of the first embodiment. For other configurations, the optical disk apparatus 200 is the same as the optical disk apparatus of the first embodiment. It is the same. When the optical disk apparatus 200 performs the erasing power OPC prior to data recording on the optical disk 140, the optical disk apparatus 200 according to the first embodiment performs a process for obtaining the erasing power in (S IOO :!) to (S1007) in FIG. (Hereinafter referred to as “first process”) and a process for obtaining an erasing power (hereinafter referred to as “second process”) by the optical disc apparatus of the second embodiment. It is supposed to be executed.
[0090] 記憶手段 201は、第 1の処理と第 2の処理を光ディスク装置 200に切り替えさせる ノ ッテリー残量の閾値を記憶する。この閾値は、記録再生装置のユーザー等によつ て決定され、記憶手段 201に保存される。  The storage unit 201 stores a threshold for the remaining amount of knotter that causes the optical disc apparatus 200 to switch between the first process and the second process. This threshold value is determined by the user of the recording / reproducing apparatus or the like and stored in the storage unit 201.
[0091] バッテリー残量測定手段 202は、バッテリーの残量を測定する。 [0091] The remaining battery level measuring means 202 measures the remaining battery level.
[0092] 駆動電源判別手段 203は、現在使用されて!/、る駆動電源が AC電源であるかバッ テリーであるかを自動的に判別する。つまり、現在の状態が、 AC電源駆動状態であ る力、バッテリー駆動状態である力、を判別する。そして、判別結果に基づいて、第 1の 処理と第 2の処理のうちのいずれを光ディスク装置 200に実行させる力、を決定する。 使用されている駆動電源が AC電源である場合には、光ディスク装置 200に実行させ る処理を第 2の処理に決定する。一方、使用されている駆動電源がバッテリーである 場合には、バッテリー残量測定手段 202によって測定された残量と記憶手段 201に 記憶された閾値とを比較し、残量が閾値よりも大きい場合には、光ディスク装置 200 に実行させる処理を第 2の処理に決定し、残量が閾値よりも小さい場合には、光ディ スク装置 200に実行させる処理を第 1の処理に決定する。 [0092] The drive power source discriminating means 203 is used to check whether the drive power source currently used! / Is an AC power source. Automatically determine if it is a terry. In other words, it is determined whether the current state is the power in the AC power supply driving state or the power in the battery driving state. Then, based on the determination result, the power for causing the optical disc device 200 to execute either the first process or the second process is determined. If the drive power supply used is an AC power supply, the process to be executed by the optical disc device 200 is determined as the second process. On the other hand, when the driving power source used is a battery, the remaining amount measured by the battery remaining amount measuring unit 202 is compared with the threshold value stored in the storing unit 201, and the remaining amount is larger than the threshold value. In this case, the process to be executed by the optical disk device 200 is determined as the second process, and when the remaining amount is smaller than the threshold value, the process to be executed by the optical disk device 200 is determined as the first process.
[0093] 光ディスク装置 200は、駆動電源判別手段 203による決定結果に応じて、消去パヮ 一 OPCにかかる時間を短くする第 1の処理と精度の高い消去パワーを zone毎に得 ることのできる第 2の処理のうちの!/、ずれかを選択し、選択した処理を実行する。  The optical disk device 200 can obtain the first process for shortening the time required for the erase power OPC and the highly accurate erase power for each zone according to the determination result by the drive power source discriminating means 203. Select either! / Of the two processes or execute the selected process.
[0094] このように、本実施形態の記録再生装置は、実施形態 1と同様に、光ディスク 140 へのデータの記録に先立ってデータ領域 143の記録品質に応じた最適消去パワー を算出することができるので、 DVD— RW2層ディスク等、消去パワーのマージンが 少ない記録媒体に対しても、高い記録品質で記録を行える。また、本実施形態の記 録再生装置は、使用する駆動電源の種類、およびバッテリーの残量に応じて、消去 パワー OPCによって得られる消去パワーの精度を重視した処理と、消去パワー OPC にかかる処理時間の短縮を重視した処理のうちのいずれかを選択できる。  As described above, the recording / reproducing apparatus of the present embodiment can calculate the optimum erasing power according to the recording quality of the data area 143 prior to the data recording on the optical disc 140, as in the first embodiment. Therefore, it is possible to record with high recording quality even on recording media with a small margin of erasing power, such as DVD-RW double-layer discs. In addition, the recording / playback apparatus according to the present embodiment, according to the type of drive power used and the remaining battery level, emphasizes the accuracy of the erasing power obtained by the erasing power OPC and the processing related to the erasing power OPC. One of the processes that emphasizes time reduction can be selected.
[0095] 《実施形態 4の変形例》  << Modification of Embodiment 4 >>
なお、記憶手段 201とバッテリー残量測定手段 202を記録再生装置に設けず、単 に、使用されている駆動電源が AC電源である場合には光ディスク装置 200が第 2の 処理を実行し、使用されている駆動電源がバッテリーである場合には光ディスク装置 200が第 1の処理を実行するようにしてもよい。  Note that the storage unit 201 and the remaining battery level measurement unit 202 are not provided in the recording / reproducing device, and simply when the driving power source used is an AC power source, the optical disc device 200 executes the second process and uses it. In the case where the drive power source that is used is a battery, the optical disc apparatus 200 may execute the first process.
[0096] また、上記実施形態 4の記録再生装置では、第 1の処理と第 2の処理とが自動的に 選択されるようになっていた力 S、ユーザーによる光ディスク装置への入力によって選 択されるようにしてもよい。また、ユーザーによるその入力内容が記憶手段に保持さ れ、その入力内容に応じて光ディスク装置 200が処理を行うようにしてもよい。 [0097] また、上記実施形態 4の記録再生装置にお!/、て、光ディスク装置 200が、実施形態 3の光ディスク装置が消去パワーを求める際に行う処理 (以下、「第 3の処理」と呼ぶ。 )を実行できるように構成され、使用する駆動電源の種類、およびバッテリーの残量に 基づいて、第 1の処理と第 3の処理のうちのいずれが実行される力、、第 2の処理と第 3 の処理のうちのいずれが実行される力、、または、第 1〜第 3の処理のうちのいずれが 実行されるかが決定されるようにしてもょレ、。 [0096] Further, in the recording / reproducing apparatus of the fourth embodiment, the first process and the second process are selected automatically by the force S, which is selected by the user input to the optical disc apparatus. You may be made to do. Further, the input content by the user may be held in the storage means, and the optical disc device 200 may perform processing according to the input content. Further, in the recording / reproducing apparatus of the fourth embodiment, the optical disc apparatus 200 performs processing (hereinafter referred to as “third process”) when the optical disc apparatus of the third embodiment obtains the erasing power. The power to execute either the first process or the third process based on the type of drive power source to be used and the remaining battery level, It is possible to determine which of the processing and the third processing is executed, or which of the first to third processing is executed.
[0098] 《実施形態 5》  [Embodiment 5]
本発明の実施形態 5に係る記録再生装置は、図 13に示すように、光ディスク装置 2 00、実行処理記憶手段 301、および録画設定判別手段 302を備えている。  As shown in FIG. 13, the recording / reproducing apparatus according to Embodiment 5 of the present invention includes an optical disc apparatus 200, an execution processing storage unit 301, and a recording setting determination unit 302.
[0099] 本実施形態の記録再生装置は、予め決められている日時に光ディスク 140へのデ ータ記録を行う場合、すなわち、予約録画を行う場合には、当該日時よりも早めに起 動し、消去パワー OPCを開始する。  [0099] The recording / reproducing apparatus of the present embodiment starts earlier than the date and time when recording data on the optical disc 140 at a predetermined date and time, that is, when performing scheduled recording. Start erasing power OPC.
[0100] 実行処理記憶手段 301は、光ディスク装置 200に第 1の処理と第 2の処理のいずれ を実行させるかを示す情報を記憶して!/、る。  [0100] The execution process storage means 301 stores information indicating which of the first process and the second process is to be executed by the optical disc device 200! /.
[0101] 録画設定判別手段 302は、第 1のモードにおいては、開始される録画が予約録画 であるか即時録画であるかを判別し、判別結果に基づいて、第 1の処理と第 2の処理 のいずれを光ディスク装置 200に実行させるかを決定する。一方、第 2のモードにお いては、第 1の処理と第 2の処理のうちの実行処理記憶手段 301に記憶された情報 によって示される処理を実行するよう、光ディスク装置 200に指示する。  [0101] In the first mode, the recording setting discriminating means 302 discriminates whether the recording to be started is a reserved recording or an immediate recording, and based on the discrimination result, the first process and the second Which of the processes is to be executed by the optical disk device 200 is determined. On the other hand, in the second mode, the optical disk device 200 is instructed to execute the process indicated by the information stored in the execution process storage means 301 of the first process and the second process.
[0102] 録画設定判別手段 302は、第 1のモードにおいて、記録再生装置において予め決 められている日時に光ディスク 140へのデータ記録が行われる場合、つまり開始され る録画が予約録画である場合には、光ディスク装置 200に実行させる処理を第 2の処 理に決定する。一方、データ記録する日時として決められていない日時にユーザに よる入力等に応じてすぐに光ディスク 140へのデータ記録が開始される場合、つまり 開始される録画が即時録画である場合には、光ディスク装置 200に実行させる処理 を第 1の処理に決定する。  [0102] In the first mode, the recording setting discriminating means 302 is used when data recording to the optical disc 140 is performed at a predetermined date and time in the recording / reproducing apparatus, that is, when the recording to be started is a reserved recording. In this case, the process to be executed by the optical disc apparatus 200 is determined as the second process. On the other hand, if data recording to the optical disc 140 is started immediately in response to an input by the user at a date and time that is not determined as the date and time for data recording, that is, if the recording to be started is immediate recording, The process to be executed by the device 200 is determined as the first process.
[0103] 光ディスク装置 200は、第 1のモードにおいては、録画設定判別手段 302による決 定結果に応じて、第 1の処理と第 2の処理のうちのいずれかを選択し、選択した処理 を実行する。一方、第 2のモードにおいては、録画設定判別手段 302による指示に 応じて、第 1の処理と第 2の処理のうちのいずれかを選択し、選択した処理を実行す In the first mode, the optical disc apparatus 200 selects one of the first process and the second process according to the determination result by the recording setting determination unit 302, and selects the selected process. Execute. On the other hand, in the second mode, one of the first process and the second process is selected and the selected process is executed according to the instruction from the recording setting discriminating means 302.
[0104] 本実施形態の記録再生装置は、第 1のモードにおいて、予め決められている日時 に光ディスク 140へのデータ記録を行う場合には、当該日時よりも早めに起動するの で、消去パワー OPCに時間をかけることができる。したがって、この場合、光ディスク 装置 200は、精度の高!/、消去パワーを zone毎に得ることのできる第 2の処理を行う。 一方、記録再生装置がすぐにデータ記録を開始する場合には、消去パワー OPCに 時間をかけられないので、光ディスク装置 200は、消去パワー OPCにかかる時間を 短くする第 1の処理を行う。 [0104] In the first mode, the recording / reproducing apparatus of the present embodiment starts earlier than the date and time when recording data on the optical disc 140 at a predetermined date and time. You can spend time on OPC. Therefore, in this case, the optical disc device 200 performs the second process that can obtain high accuracy / erase power for each zone. On the other hand, when the recording / reproducing apparatus immediately starts data recording, the optical disc apparatus 200 performs the first process for shortening the time required for the erasing power OPC because it cannot take time for the erasing power OPC.
[0105] このように、本実施形態の記録再生装置は、実施形態 1と同様に、光ディスク 140 へのデータの記録に先立ってデータ領域 143の記録品質に応じた最適消去パワー を算出することができるので、 DVD— RW2層ディスク等、消去パワーのマージンが 少ない記録媒体に対しても、高い記録品質で記録を行える。また、本実施形態の記 録再生装置は、開始される録画が予約録画であるか即時録画であるかに応じて、消 去パワー OPCによって得られる消去パワーの精度を重視した処理と、消去パワー O PCにかかる処理時間の短縮を重視した処理のうちのいずれかを自動的に選択でき  As described above, the recording / reproducing apparatus of the present embodiment can calculate the optimum erasing power corresponding to the recording quality of the data area 143 prior to the data recording on the optical disc 140, as in the first embodiment. Therefore, it is possible to record with high recording quality even on recording media with a small margin of erasing power, such as DVD-RW double-layer discs. In addition, the recording / playback apparatus according to the present embodiment performs processing that emphasizes the accuracy of the erasing power obtained by the erasing power OPC and the erasing power depending on whether the recording to be started is a reserved recording or an immediate recording. O One of the processes that emphasizes the reduction of processing time on the PC can be automatically selected.
[0106] 《実施形態 5の変形例》 << Modification of Embodiment 5 >>
なお、記録再生装置が、第 1のモードにおける動作と第 2のモードにおける動作の V、ずれか一方のみを行うようにしてもょレ、。  It should be noted that the recording / reproducing apparatus may perform only one of the operation in the first mode and the operation in the second mode.
[0107] また、上記実施形態 5の記録再生装置にお!/、て、光ディスク装置 200が、実施形態 3の光ディスク装置が消去パワーを求める際に行う処理 (以下、「第 3の処理」と呼ぶ。 )を実行できるように構成され、開始される録画が予約録画であるか即時録画である かに基づいて、第 1の処理と第 3の処理のうちのいずれが実行される力、、第 2の処理 と第 3の処理のうちのいずれが実行される力、、または、第 1〜第 3の処理のうちのいず れが実行されるかが決定されるようにしてもょレ、。  In addition, in the recording / reproducing apparatus of the fifth embodiment, the optical disk apparatus 200 performs processing (hereinafter referred to as “third process”) when the optical disk apparatus of the third embodiment obtains the erasing power. The ability to perform either the first process or the third process, based on whether the recording to be started is a scheduled recording or an immediate recording, It is also possible to determine which of the second process and the third process is executed, or which of the first to third processes is executed. ,.
[0108] 《実施形態 6》 本発明の実施形態 6に係る記録再生装置は、図 14に示すように、光ディスク装置 4 00、ディスク ID(identification)記憶手段 401、およびディスク m情報判別手段 402を 備えている。 [Embodiment 6] As shown in FIG. 14, the recording / reproducing apparatus according to Embodiment 6 of the present invention includes an optical disc device 400, disc ID (identification) storage means 401, and disc m information discrimination means 402.
[0109] 光ディスク装置 400は、実施形態 1の信号処理装置 110のシステムコントローラー 1 14とは異なる制御を行うシステムコントローラー 114を備えている力 それ以外の構 成については、実施形態 1の光ディスク装置と同様である。光ディスク装置 400は、実 施形態 1の光ディスク装置による図 5および図 6に示す動作を実行する力 その際、 試し書き領域に複数種類の記録パワーによって記録を行い、前記記録品質取得手 段によって記録品質を算出し、 (S2006)において用いる変調度 ·記録パワー関係式 を算出する関係式算出ステップを実行するか、当該関係式算出ステップを実行せず に、予め記憶手段 115に記憶されている変調度 ·記録パワー関係式を（S2006)に お!/、て用いるかを選択し、選択結果に応じた処理を実行する。  [0109] The optical disk device 400 has a system controller 114 that performs control different from the system controller 114 of the signal processing device 110 of the first embodiment. For other configurations, the optical disk device 400 is the same as the optical disk device of the first embodiment. It is the same. The optical disc apparatus 400 has the ability to execute the operations shown in FIGS. 5 and 6 by the optical disc apparatus of Embodiment 1. At that time, recording is performed with a plurality of types of recording power in the test writing area, and recording is performed by the recording quality acquisition means. Calculate the quality and execute the relational expression calculation step for calculating the modulation degree / recording power relational expression used in (S2006), or do not execute the relational expression calculation step, • Select whether to use the recording power relation in (S2006)! /, And execute the process according to the selection result.
[0110] ディスク ID記憶手段 401は、光ディスク 140のディスク管理領域 141から読み取ら れたディスク IDを記憶する。  The disk ID storage unit 401 stores the disk ID read from the disk management area 141 of the optical disk 140.
[0111] ディスク D 情報判別手段 402は、光ディスク 140のディスク管理領域 141からディス ク IDを検出し、検出したディスク IDが、ディスク ID記憶手段 401に記憶されているデ イスク IDと一致して!/、るかを判別する。  [0111] The disc D information discriminating means 402 detects the disc ID from the disc management area 141 of the optical disc 140, and the detected disc ID matches the disc ID stored in the disc ID storage means 401! Determine if /.
[0112] 光ディスク装置 400は、ディスク D 情報判別手段 402によって、検出したディスク ID 1S ディスク ID記憶手段 401に記憶されているディスク IDと一致していると判別され たときは、上記関係式算出ステップを実行せずに、予め記憶手段 115に記憶されて いる変調度 ·記録パワー関係式を用いる一方、ディスク Π3情報判別手段 402によつ て、検出したディスク IDが、ディスク ID記憶手段 401に記憶されているディスク IDと 一致していないと判別されたときは、上記関係式算出ステップを実行する。  [0112] When the disc D information discriminating unit 402 discriminates that the disc ID matches the disc ID stored in the disc ID 1S disc ID storage unit 401, the optical disc device 400 performs the above relational expression calculating step. The disc ID detected by the disc 3 information discriminating means 402 is stored in the disc ID storing means 401 while the modulation degree / recording power relational expression stored in advance in the storing means 115 is used. If it is determined that the disk ID does not match, the above relational expression calculating step is executed.
[0113] 本実施形態の記録再生装置は、実施形態 1の光ディスク装置による図 5および図 6 に示す動作を実行する力 図 6における（S2004)の動作に代えて、図 15に示す動 作を行う。以下、図 15のフローチャートに示す記録再生装置による動作について説 明する。  [0113] The recording / reproducing apparatus of the present embodiment performs the operation shown in FIG. 15 in place of the operation of (S2004) in FIG. 6 by the optical disc apparatus of the first embodiment for executing the operation shown in FIG. 5 and FIG. Do. The operation of the recording / reproducing apparatus shown in the flowchart of FIG. 15 will be described below.
[0114] (S5001)ディスク D 情報判別手段 402が、光ディスク 140のディスク管理領域 141 力も読み取られたディスク ID力 ディスク ID記憶手段 401に記憶されているディスク I Dと一致しているかを判断する。そして、光ディスク 140のディスク管理領域 141から 読み取られたディスク IDが、ディスク ID記憶手段 401に記憶されているディスク IDと 一致している場合には、記録再生装置による処理が、（S2004)に進み、一致してい ない場合には、（S5002)に進む。 (S5001) The disc D information discriminating means 402 uses the disc management area 141 of the optical disc 140. The disc ID force that has been read is discriminated whether it matches the disc ID stored in the disc ID storage means 401. If the disc ID read from the disc management area 141 of the optical disc 140 matches the disc ID stored in the disc ID storage means 401, the processing by the recording / reproducing apparatus proceeds to (S2004). If they do not match, proceed to (S5002).
[0115] (S5002)システムコントローラー 114力 モーター 130を制御することによって、光 ピックアップ 100を試し書き領域 142に移動させる。  [0115] (S5002) System controller 114 force By controlling the motor 130, the optical pickup 100 is moved to the test writing area 142.
[0116] (S5003)光ディスク装置 400力 記録パワーを階段状に変化させて試し書き領域  [0116] (S5003) Optical disk device 400 force Test writing area by changing the recording power stepwise
142に対して記録を行う。記録が行われている間、レーザーパワー検出手段 120が 記録パワーを検出し、検出された記録パワーが記憶手段 115に格納される。  Record for 142. While recording is being performed, the laser power detection means 120 detects the recording power, and the detected recording power is stored in the storage means 115.
[0117] (S5004) RF信号検出手段 111が、（S5003)において記録された領域からの反 射光を変換した電気信号に基づく RF信号を検出し、変調度算出手段 113が、この R F信号に基づいて変調度を算出し、算出された変調度が記憶手段 115に格納される  [0117] (S5004) RF signal detection means 111 detects an RF signal based on the electrical signal obtained by converting the reflected light from the area recorded in (S5003), and modulation degree calculation means 113 is based on this RF signal. The modulation degree is calculated by using the storage means 115.
[0118] (S5005)システムコントローラー 114が、 （S5003)において検出された記録パヮ 一の値と、 (S5004)において算出された変調度の値とを記憶手段 115から読み出し 、変調度 ·記録パワー関係式を算出し、最新の変調度 ·記録パワー関係式として、記 憶手段 115に記憶させる。 (S5005) The system controller 114 reads out the recording unit value detected in (S5003) and the modulation factor value calculated in (S5004) from the storage means 115, and the modulation factor / recording power relationship The formula is calculated and stored in the storage means 115 as the latest modulation degree / recording power relational formula.
[0119] (S5006)システムコントローラー 114が、 （S5005)において算出された変調度'パ ヮー関係式を、記憶手段 115から読み出す。  (S5006) The system controller 114 reads from the storage means 115 the modulation degree 'power relational expression calculated in (S5005).
[0120] なお、（S5002)〜（S5005)における処理がステップ（d)に相当する。  [0120] The processing in (S5002) to (S5005) corresponds to step (d).
[0121] このように、本実施形態の記録再生装置においては、前回装着された光ディスクと 同じディスク IDの光ディスク 140が装着された場合、変調度 ·記録パワー関係式が再 計算されることなぐすでに記憶手段 115に記憶されている変調度 ·記録パワー関係 式が用いられる。一方、前回装着された光ディスクと異なるディスク IDの光ディスク 14 0が装着された場合には、変調度 ·記録パワー関係式が再計算され、当該再計算に よって求められた変調度 ·記録パワー関係式が記憶手段 115に保存されて用いられ る。なお、再計算の際に求められた変調度、および再計算の結果である変調度'記 録パワー関係式が、光ディスク 140上に保存されるようにしてもよい。 As described above, in the recording / reproducing apparatus of the present embodiment, when the optical disk 140 having the same disk ID as the previously mounted optical disk is mounted, the modulation degree / recording power relational expression is not recalculated. The modulation degree / recording power relation stored in the storage means 115 is used. On the other hand, when an optical disc 140 having a disc ID different from the previously loaded optical disc is loaded, the modulation degree / recording power relational expression is recalculated, and the modulation degree / recording power relational expression obtained by the recalculation is calculated. Is stored in the storage means 115 and used. Note that the modulation factor obtained during the recalculation and the modulation factor that is the result of the recalculation The recording power relational expression may be stored on the optical disc 140.
[0122] このように、本実施形態の記録再生装置は、実施形態 1と同様に、光ディスク 140 へのデータの記録に先立ってデータ領域 143の記録品質に応じた最適消去パワー を算出することができるので、 DVD— RW2層ディスク等、消去パワーのマージンが 少ない記録媒体に対しても、高い記録品質で記録を行える。また、前回と同じ IDの 光ディスク; L40が装着された場合、すでに記憶手段 115に記憶された変調度 ·記録 パワー関係式を用いるので、変調度 ·記録パワー関係式を算出し直す場合よりも、消 去パワー OPCにかかる時間を短縮できる。  As described above, the recording / reproducing apparatus of the present embodiment can calculate the optimum erasing power according to the recording quality of the data area 143 prior to the data recording on the optical disc 140, as in the first embodiment. Therefore, it is possible to record with high recording quality even on recording media with a small margin of erasing power, such as DVD-RW double-layer discs. Also, when an optical disc with the same ID as the previous one; L40 is mounted, the modulation degree / recording power relational expression already stored in the storage means 115 is used, so that the modulation degree / recording power relational expression is recalculated. Erase power Reduces the time required for OPC.
[0123] 《実施形態 6の変形例》  << Modification of Embodiment 6 >>
なお、上記実施形態 6の記録再生装置が、光ディスク装置 400の代わりに、実施形 態 2の光ディスク装置を備え、光ディスク 140のディスク管理領域 141から読み取られ たディスク ID力 ディスク ID記憶手段 401に記憶されて!/、る IDと一致して!/、るか否か に応じて、図 8の（S3007)〜（S3011)における変調度 ·記録パワー関係式を算出 する動作を行ったり、行わなかったりするようにしてもよい。この場合、（S3007)〜（S 3011)における処理がステップ（d)に相当する。  Note that the recording / reproducing apparatus of the sixth embodiment includes the optical disk apparatus of the second embodiment instead of the optical disk apparatus 400, and stores the disk ID force read from the disk management area 141 of the optical disk 140 in the disk ID storage unit 401. Depending on whether or not the ID matches the ID! /, The operation to calculate the modulation degree / recording power relation in (S3007) to (S3011) in FIG. 8 is performed or not performed. You may make it do. In this case, the processing in (S3007) to (S3011) corresponds to step (d).
[0124] 《実施形態 7》  [0124] <Embodiment 7>
本発明の実施形態 7に係る記録再生装置は、図 16に示すように、光ディスク装置 4 00、およびディスク着脱情報判別手段 501を備えている。  The recording / reproducing apparatus according to Embodiment 7 of the present invention includes an optical disc device 400 and disc attachment / detachment information discriminating means 501 as shown in FIG.
[0125] ディスク着脱情報判別手段 501は、光ディスク 140の着脱 (抜き出しおよび装着）を 検出し、変調度 ·記録パワー関係式が前回算出されて力も光ディスク 140の着脱が 行われたか否かを判別する。具体的には、例えば、トレイの開閉があった場合には、 光ディスク 140の着脱が行われたと判別し、トレイの開閉がなかった場合には、光ディ スク 140の着脱が行われなかったと判別する。  [0125] The disc attachment / detachment information discriminating means 501 detects whether the optical disc 140 is attached / detached (extraction and attachment), and discriminates whether or not the optical disc 140 is attached / detached with the previously calculated modulation degree / recording power relational expression. . Specifically, for example, when the tray is opened / closed, it is determined that the optical disk 140 is attached / detached, and when the tray is not opened / closed, it is determined that the optical disk 140 is not attached / detached. To do.
[0126] 光ディスク装置 400は、ディスク着脱情報判別手段 501によって、変調度'記録パヮ 一関係式が前回算出されてから光ディスク 140の着脱が行われなかったと判別され たときは、上記関係式算出ステップを実行せずに、予め記憶手段 115に記憶されて いる変調度 ·記録パワー関係式を用いる一方、ディスク着脱情報判別手段 501によ つて、変調度 ·記録パワー関係式が前回算出されてから光ディスク 140の着脱が行わ れたと判別されたときは、上記関係式算出ステップを実行する。 [0126] When the disc attachment / detachment information discriminating means 501 discriminates that the optical disc 140 has not been attached / detached since the discrepancy degree / recording relation relational equation was previously calculated, The modulation degree / recording power relational expression stored in the storage means 115 in advance is used, while the disk attachment / detachment information discriminating means 501 calculates the modulation degree / recording power relational expression from the previous time. 140 is attached and detached If it is determined that the relational expression is determined, the relational expression calculating step is executed.
[0127] 上記のように構成された記録再生装置においては、変調度 ·記録パワー関係式が 前回算出されてから光ディスク 140の着脱が行われたと判別された場合には、変調 度-記録パワー関係式が再計算されることなぐすでに記憶手段 115に記憶されてい る変調度 ·記録パワー関係式が用いられる。一方、光ディスク 140の着脱が行われな 力、つたと判別された場合には、変調度 ·記録パワー関係式が再計算され、当該再計 算によって求められた変調度 ·記録パワー関係式が記憶手段 115に保存されて用い られる。なお、再計算の際に求められた変調度、および再計算の結果である変調度' 記録パワー関係式が、光ディスク 140上に保存されるようにしてもよい。  In the recording / reproducing apparatus configured as described above, when it is determined that the optical disk 140 has been attached / detached since the modulation degree / recording power relational expression was calculated last time, the modulation degree / recording power relation The modulation degree / recording power relational expression already stored in the storage means 115 is used without recalculating the expression. On the other hand, if it is determined that the optical disk 140 is not attached / detached, the modulation degree / recording power relational expression is recalculated, and the modulation degree / recording power relational expression obtained by the recalculation is stored. It is stored in the means 115 and used. It should be noted that the modulation factor obtained during the recalculation and the modulation power recording power relational expression that is the result of the recalculation may be stored on the optical disc 140.
[0128] 本実施形態の記録再生装置は、実施形態 1と同様に、光ディスク 140へのデータ の記録に先立ってデータ領域 143の記録品質に応じた最適消去パワーを算出する ことができるので、 DVD— RW2層ディスク等、消去パワーのマージンが少ない記録 媒体に対しても、高い記録品質で記録を行える。また、変調度 ·記録パワー関係式が 前回算出されてから光ディスク 140の着脱が行われていない場合、すでに記憶手段 115に記憶された変調度 ·記録パワー関係式を用いるので、変調度 ·記録パワー関 係式を算出し直す場合よりも、消去パワー OPCにかかる時間を短縮できる。  Since the recording / reproducing apparatus of the present embodiment can calculate the optimum erasing power corresponding to the recording quality of the data area 143 prior to the recording of data on the optical disc 140, as in the first embodiment, the DVD — High recording quality can be recorded even on recording media with a small margin of erasing power, such as RW double-layer discs. If the optical disk 140 has not been attached / detached since the modulation degree / recording power relational expression was previously calculated, the modulation degree / recording power relational expression already stored in the storage means 115 is used. Compared to recalculating the relational expression, the time required for erasing power OPC can be shortened.
[0129] 《実施形態 7の変形例》  << Modification of Embodiment 7 >>
なお、上記実施形態 7の記録再生装置が、光ディスク装置 400の代わりに、実施形 態 2の光ディスク装置を備え、変調度 ·記録パワー関係式が前回算出されて力も光デ イスク 140の着脱が行われたか否かに応じて、図 8の（S3007)〜（S3011)における 変調度 ·記録パワー関係式を算出する動作を行ったり、行わなかったりするようにして あよい。  Note that the recording / reproducing apparatus of the seventh embodiment includes the optical disk apparatus of the second embodiment instead of the optical disk device 400, and the modulation degree / recording power relational expression is calculated last time, and the optical disk 140 is attached and detached. The operation for calculating the modulation degree / recording power relational expression in (S3007) to (S3011) in FIG. 8 may or may not be performed depending on whether or not it is received.
[0130] 《実施形態 8》  [Embodiment 8]
本発明の実施形態 8に係る記録再生装置は、図 17に示すように、光ディスク装置 4 00、有効期限記憶手段 601、および有効期限判別手段 602を備えている。  As shown in FIG. 17, the recording / reproducing apparatus according to Embodiment 8 of the present invention includes an optical disc device 400, an expiration date storage unit 601 and an expiration date determination unit 602.
[0131] 有効期限記憶手段 601は、光ディスク 140から読み取られたディスク IDと光ディスク  [0131] Expiration date storage means 601 includes a disc ID read from optical disc 140 and an optical disc.
140の有効期限とを対応付けて記憶する。  The 140 expiration dates are stored in association with each other.
[0132] 有効期限判別手段 602は、光ディスク装置に装着されている光ディスク 140のディ スク ID力 S、すでに有効期限記憶手段 601に保存されているディスク IDと同じであった 場合、消去パワー OPCが行われる際に、現在が、有効期限記憶手段 601において 当該ディスク IDと対応づけて記憶されている有効期限内であるか否力、を判別する。 [0132] The expiration date discriminating means 602 is used for the disc of the optical disc 140 mounted in the optical disc apparatus. If the disk ID power S is the same as the disk ID already stored in the expiration date storage means 601, when the erase power OPC is performed, the current ID is associated with that disk ID in the expiration date storage means 601. It is determined whether or not it is within the stored expiration date.
[0133] 光ディスク装置 400は、有効期限判別手段 602によって、現在が、有効期限記憶 手段 601において当該ディスク IDと対応づけて記憶されている有効期限内であると 判別されたときは、上記関係式算出ステップを実行せずに、予め記憶手段 115に記 憶されている変調度 ·記録パワー関係式を用いる一方、現在が、有効期限記憶手段 601にお!/、て当該ディスク IDと対応づけて記憶されて!/、る有効期限内でなレ、と判別 されたときは、上記関係式算出ステップを実行する。  [0133] When the optical disc device 400 determines that the current time is within the expiration date stored in association with the disc ID in the expiration date storage unit 601 by the expiration date determination unit 602, the relational expression While the calculation step is not executed, the modulation degree / recording power relational expression stored in advance in the storage unit 115 is used, while the current expiration date storage unit 601 is associated with the disc ID! If it is determined that the stored date is not within the expiration date, the above relational expression calculating step is executed.
[0134] このように構成された記録再生装置においては、現在が、装着されている光デイス ク 140のディスク IDと対応づけて有効期限記憶手段 601に記憶されて!/、る有効期限 内である場合には、変調度 ·記録パワー関係式が再計算されることなぐすでに記憶 手段 115に記憶されている変調度 ·記録パワー関係式が用いられる。一方、現在が、 装着されている光ディスク 140のディスク IDと対応づけて有効期限記憶手段 601に 記憶されている有効期限外である場合には、変調度 ·記録パワー関係式が再計算さ れ、当該再計算によって求められた変調度 ·記録パワー関係式が記憶手段 115に保 存されて用いられる。なお、再計算の際に求められた変調度、および再計算の結果 である変調度 ·記録パワー関係式力 光ディスク 140上に保存されるようにしてもよい  In the recording / reproducing apparatus configured as described above, the current date is stored in the expiration date storage means 601 in association with the disc ID of the optical disk 140 attached! In some cases, the modulation degree / recording power relational expression already stored in the storage means 115 is used without recalculating the modulation degree / recording power relational expression. On the other hand, if it is outside the expiration date stored in the expiration date storage means 601 in association with the disc ID of the mounted optical disc 140, the modulation degree / recording power relational expression is recalculated, The modulation degree / recording power relationship obtained by the recalculation is stored in the storage means 115 and used. It should be noted that the modulation factor obtained during the recalculation and the modulation factor / recording power relational force resulting from the recalculation may be stored on the optical disc 140.
[0135] 本実施形態の記録再生装置は、実施形態 1と同様に、光ディスク 140へのデータ の記録に先立ってデータ領域 143の記録品質に応じた最適消去パワーを算出する ことができるので、 DVD— RW2層ディスク等、消去パワーのマージンが少ない記録 媒体に対しても、高い記録品質で記録を行える。また、有効期限内の光ディスク 140 に対する消去パワー OPCにおいては、すでに記憶手段 115に記憶された変調度 · 記録パワー関係式を用いるので、変調度 ·記録パワー関係式を算出し直す場合より も、消去パワー OPCにかかる時間を短縮でき、また、消去パワーのために使用される 光ディスク 140の領域を削減できる。 Since the recording / reproducing apparatus of the present embodiment can calculate the optimum erasing power corresponding to the recording quality of the data area 143 prior to the recording of data on the optical disc 140, as in the first embodiment, the DVD — High recording quality can be recorded even on recording media with a small margin of erasing power, such as RW double-layer discs. In addition, in the erasing power OPC for the optical disc 140 within the expiration date, the modulation degree / recording power relational expression already stored in the storage means 115 is used. Power OPC time can be shortened, and the area of the optical disk 140 used for erasing power can be reduced.
[0136] 《実施形態 8の変形例》 なお、上記実施形態 8の記録再生装置が、光ディスク装置 400の代わりに、実施形 態 2の光ディスク装置を備え、現在が、装着されている光ディスク 140のディスク IDと 対応づけて有効期限記憶手段 601に記憶されている有効期限内であるか否かに応 じて、図 8の（S3007)〜（S3011)における変調度 ·記録パワー関係式を算出する動 作を行ったり、行わなかったりするようにしてもよい。 << Modification of Embodiment 8 >> Note that the recording / reproducing apparatus of the eighth embodiment includes the optical disk apparatus of the second embodiment instead of the optical disk apparatus 400, and the expiration date storage means 601 is associated with the disk ID of the optical disk 140 currently mounted. Depending on whether or not it is within the expiration date stored in Fig. 8, (S3007) to (S3011) in Fig. 8 may or may not perform the operation to calculate the modulation degree / recording power relational expression. It may be.
[0137] 《実施形態 9》 [Embodiment 9]
本発明の実施形態 9に係る記録再生装置は、図 18に示すように、光ディスク装置 4 00、温度記憶手段 701、温度判別手段 702、および図示しない温度測定手段を備 えている。  As shown in FIG. 18, the recording / reproducing apparatus according to Embodiment 9 of the present invention includes an optical disc device 400, a temperature storage unit 701, a temperature determination unit 702, and a temperature measurement unit (not shown).
[0138] 温度測定手段は、光ディスク装置 400の温度を測定する。この温度は、信号処理 装置 110内の温度であってもよいし、光ピックアップ 100内の温度であってもよい。  [0138] The temperature measuring means measures the temperature of the optical disc device 400. This temperature may be the temperature inside the signal processing device 110 or the temperature inside the optical pickup 100.
[0139] 温度記憶手段 701は、ディスク IDと、光ディスク装置 400の温度とを対応付けて記 憶する。記憶される温度は、対応するディスク IDを有する光ディスクに対して前回消 去パワー OPCが行われた際に温度測定手段によって測定された温度である。  [0139] The temperature storage unit 701 stores the disk ID and the temperature of the optical disk device 400 in association with each other. The stored temperature is the temperature measured by the temperature measuring means when the last erasing power OPC was performed on the optical disk having the corresponding disk ID.
[0140] 温度判別手段 702は、温度記憶手段 701から、光ディスク装置 400に装着されて いる光ディスク 140のディスク IDと対応付けて記憶された温度を読み出す。この温度 は、当該ディスク IDを有する光ディスク 140に対して前回行われた消去パワー OPC 時における光ディスク装置 400の温度である。そして、読み出した温度と今回の消去 ノ ヮ一 OPC直前における温度との差力 S、予め定められている所定値未満であるか否 かを判別する。  The temperature determination unit 702 reads from the temperature storage unit 701 the temperature stored in association with the disc ID of the optical disc 140 attached to the optical disc apparatus 400. This temperature is the temperature of the optical disc apparatus 400 at the time of the erasing power OPC performed for the optical disc 140 having the disc ID last time. Then, it is determined whether or not the differential force S between the read temperature and the temperature immediately before the erasure No. 1 OPC is less than a predetermined value.
[0141] 光ディスク装置 400は、温度判別手段 702によって、上記差が、予め定められてい る所定値未満であると判別されたときは、上記関係式算出ステップを実行せずに、予 め記憶手段 115に記憶されている変調度 ·記録パワー関係式を用いる一方、上記差 1S 予め定められている所定値以上であると判別されたときは、上記関係式算出ステ ップを実行する。  [0141] When the temperature discriminating means 702 determines that the difference is less than a predetermined value, the optical disc device 400 does not execute the relational expression calculating step, and stores the information in advance. While the modulation degree / recording power relational expression stored in 115 is used, if it is determined that the difference 1S is greater than or equal to a predetermined value, the relational expression calculating step is executed.
[0142] このように構成された記録再生装置においては、装着された光ディスクのディスク I Dと温度記憶手段 701に保存されたディスク IDとが同じ場合、その光ディスクに対す る消去パワー OPC時に、温度記憶手段 701においてそのディスク IDに対応させて 保存されている前回の消去パワー OPC時における温度が読み出される。そして、新 たに温度測定手段によって光ディスク装置 400の温度が測定され、測定された温度 と温度記憶手段 701から読み出された温度との差が所定値未満である場合には、変 調度 ·記録パワー関係式が再計算されることなぐすでに記憶手段 115に記憶されて いる変調度 ·記録パワー関係式が用いられる。一方、測定された温度と温度記憶手 段 701から読み出された温度との差が所定値以上である場合には、変調度'記録パ ヮー関係式が再計算され、当該再計算によって求められた変調度 ·記録パワー関係 式が記憶手段 115に保存されて用いられる。なお、再計算の際に求められた変調度 、および再計算の結果である変調度 ·記録パワー関係式が、光ディスク 140上に保存 されるようにしてあよい。 [0142] In the recording / reproducing apparatus configured as described above, when the disc ID of the loaded optical disc is the same as the disc ID stored in the temperature storage means 701, the temperature storage is performed at the time of erasing power OPC for the optical disc. Corresponding to the disk ID in means 701 Reads the stored temperature at the last erase power OPC. Then, when the temperature of the optical disk device 400 is newly measured by the temperature measuring means, and the difference between the measured temperature and the temperature read from the temperature storage means 701 is less than a predetermined value, the modulation degree / recording The modulation degree / recording power relation already stored in the storage means 115 is used without recalculating the power relation. On the other hand, if the difference between the measured temperature and the temperature read from the temperature storage unit 701 is equal to or greater than a predetermined value, the modulation degree'recording power relational expression is recalculated and obtained by the recalculation. The modulation degree / recording power relationship is stored in the storage means 115 and used. It should be noted that the modulation factor obtained at the time of recalculation and the modulation factor / recording power relational expression as a result of the recalculation may be stored on the optical disc 140.
[0143] 本実施形態の記録再生装置は、実施形態 1と同様に、光ディスク 140へのデータ の記録に先立ってデータ領域 143の記録品質に応じた最適消去パワーを算出する ことができるので、 DVD— RW2層ディスク等、消去パワーのマージンが少ない記録 媒体に対しても、高い記録品質で記録を行える。また、記録開始時における光デイス ク装置の温度が前回の消去パワー OPC時から大きく変化した場合でも、変調度-記 録パワー関係式を再計算するので、正しい記録パワーで下地記録を行い、消去パヮ 一を正しく求めること力 Sできる。また、記録開始時における光ディスク装置の温度が前 回の消去パワー OPC時からあまり変化していない場合には、すでに記憶手段 115に 記憶された変調度 ·記録パワー関係式を用いるので、変調度 ·記録パワー関係式を 算出し直す場合よりも、消去パワー OPCにかかる時間を短縮できる。  Since the recording / reproducing apparatus of the present embodiment can calculate the optimum erasing power corresponding to the recording quality of the data area 143 prior to the recording of data on the optical disc 140, as in the first embodiment, the DVD — High recording quality can be recorded even on recording media with a small margin of erasing power, such as RW double-layer discs. Even if the temperature of the optical disk device at the start of recording changes greatly from the previous erasing power OPC, the modulation degree-recording power relational expression is recalculated. The ability to seek the right one is possible. Also, if the temperature of the optical disk device at the start of recording has not changed much since the previous erasing power OPC, the modulation degree and recording power relational expression already stored in the storage means 115 are used. Compared to recalculating the recording power relational expression, the time required for erasing power OPC can be shortened.
[0144] 《実施形態 9の変形例》  << Modification of Embodiment 9 >>
上記実施形態 9においては、光ディスク装置 400の温度が測定されて用いられるよ うになつていたが、光ディスク 140の温度が測定されて用いられるようにしてもよい。  In the ninth embodiment, the temperature of the optical disc device 400 is measured and used. However, the temperature of the optical disc 140 may be measured and used.
[0145] また、光ディスク装置 400の代わりに実施形態 4で説明した光ディスク装置 200を設 け、温度判別手段 702が、温度測定手段によって測定された光ディスク装置 200の 温度、または光ディスク 140の温度に基づいて、光ディスク装置 200に第 1の処理と 第 2の処理の!/、ずれを実行させるかを決定するようにしてもよ!/、。  Further, the optical disc device 200 described in the fourth embodiment is provided instead of the optical disc device 400, and the temperature determination unit 702 is based on the temperature of the optical disc device 200 measured by the temperature measurement unit or the temperature of the optical disc 140. Thus, it may be determined whether the optical disc apparatus 200 is to execute the first process and the second process!
[0146] また、上記実施形態 9の記録再生装置が、光ディスク装置 400の代わりに、実施形 態 2の光ディスク装置を備え、今回行われた消去パワー OPC時における光ディスク 装置の温度と前回行われた消去パワー OPC時における光ディスク装置の温度との 差が所定値未満であるか否かに応じて、図 8の（S3007)〜（S3011)における変調 度-記録パワー関係式を算出する動作を行ったり、行わなかったりするようにしてもよ い。 [0146] Further, the recording / reproducing apparatus of the ninth embodiment is not limited to the optical disc apparatus 400, but in the embodiment. Depending on whether or not the difference between the temperature of the optical disk device at the time of the erase power OPC performed this time and the temperature of the optical disk device at the time of the previous erase power OPC is less than a predetermined value The operation for calculating the modulation degree-recording power relational expression in (S3007) to (S3011) in FIG. 8 may or may not be performed.
[0147] 《その他の実施形態》  [0147] Other Embodiments
なお、上記実施形態においては、記録品質を示す値として変調度が用いられてい た力 変調度に代えて、ァシンメトリ値を用いてもよい。ァシンメトリ値は、 RF信号の非 対称性を示すものであり、  In the above embodiment, an asymmetry value may be used in place of the force modulation degree in which the modulation degree is used as a value indicating the recording quality. The asymmetry value indicates the asymmetry of the RF signal,
ァシンメトリイ直 = (RFpeak+RFbottom- 2dc) / (RFpeak-RFbottom)  Asymmetry straight = (RFpeak + RFbottom- 2dc) / (RFpeak-RFbottom)
という式によって表される。ここで、 dcは RF信号の DC値を示す。  It is expressed by the formula. Here, dc represents the DC value of the RF signal.
[0148] また、上記実施形態においては、下地記録パワー算出手段 116が、変調度，記録 ノ^ー関係式を用いることによって、下地記録時における記録パワーを算出するよう になっていたが、必ずしも関係式を用いることによって算出しなくてもよい。例えば、 記憶手段 115が、変調度とその変調度に対応する記録パワーとの組を複数組記憶し ており、測定された変調度に対応する記録パワーが、下地記録時における記録パヮ 一として決定されるようにしてあよい。  [0148] In the above embodiment, the base recording power calculation means 116 calculates the recording power at the time of base recording by using the modulation factor and the recording noise relational expression. It is not necessary to calculate by using a relational expression. For example, the storage unit 115 stores a plurality of sets of modulation degrees and recording powers corresponding to the modulation degrees, and the recording power corresponding to the measured modulation degrees is determined as the recording power at the time of base recording. It's fine to be done.
[0149] また、上記実施形態においては、下地記録パワー算出手段 116が、試し書き領域 1 42の変調度を記録品質取得位置の変調度と同じにするのに適した下地記録用の記 録パワーを算出するようになっていた。しかし、試し書き領域 142の変調度を記録品 質取得位置の変調度と全く同じにする記録パワーに限らず、試し書き領域 142の変 調度を記録品質取得位置の変調度に近くする記録パワーを算出するものであっても よい。  In the above embodiment, the recording power for ground recording suitable for the ground recording power calculation means 116 to make the modulation degree of the test writing area 144 the same as the modulation degree of the recording quality acquisition position. Was supposed to be calculated. However, the recording power is not limited to the recording power at which the modulation degree of the trial writing area 142 is exactly the same as the modulation degree of the recording quality acquisition position, but the recording power that makes the modulation degree of the trial writing area 142 close to the modulation degree of the recording quality acquisition position. It may be calculated.
[0150] また、実施形態 1の光ディスク装置を、図 6の（S2004)の動作に代えて、図 15の（S 5002)〜 (S5006)の動作を ί亍ぅよう ίこ構成してもよ!/ヽ。  [0150] Further, the optical disk apparatus of Embodiment 1 may be configured to perform the operations of (S5002) to (S5006) of Fig. 15 instead of the operation of (S2004) of Fig. 6. ! / ヽ.
[0151] また、実施形態 4、 5においては、使用する駆動電源の種類、ノ クテリーの残量、ま たは録画設定に基づいて、光ディスク装置 200に第 1の処理と第 2の処理のうちのい ずれを実行させるかが決定されるようになっていた。しかし、光ディスク装置 200を、 第 1および第 2の 2種類の処理ではなぐ分割する zoneの数、および変調度を測定す る箇所の数が互いに異なり、それぞれ、 zone毎に最適記録パワーを決定する 2種類 以上の処理 (複数種類の処理)を実行するように構成し、使用する駆動電源の種類、 バッテリーの残量、または録画設定に基づいて、これらの処理のうちのいずれを光デ イスク装置 200に実行させるかが決定されるようにしてもよい。また、光ディスク装置 2 00、または光ディスク 140の温度に基づいて、これらの処理のうちのいずれを光ディ スク装置 200に実行させるかが決定されるようにしてもよい。 [0151] Also, in Embodiments 4 and 5, the optical disk device 200 includes the first process and the second process based on the type of drive power used, the remaining battery level, or the recording setting. It was decided to decide which one to execute. However, the optical disk device 200 The number of zones to be divided in the first and second types of processing differs from the number of locations where the modulation factor is measured, and two or more types of processing that determine the optimum recording power for each zone (multiple Depending on the type of drive power used, the remaining battery level, or the recording settings, which of these processes is to be executed by the optical disk device 200 is determined. You may be made to do. Further, based on the temperature of the optical disc device 200 or the optical disc 140, it may be determined which of these processes is to be executed by the optical disc device 200.
[0152] また、実施形態 1〜3のハードウェア構成を、図 1のブロック図を用いて説明したが、 この構成に限らず、他の構成によって、同様の機能を実現してもよい。  Further, although the hardware configuration of the first to third embodiments has been described using the block diagram of FIG. 1, the same function may be realized by other configurations without being limited to this configuration.
[0153] 同様に、実施形態 4〜9についても、図 12〜； 14、 16〜； 18のブロック図に示した構 成に限らず、他の構成によって、同様の機能を実現してもよい。  Similarly, Embodiments 4 to 9 are not limited to the configurations shown in the block diagrams of FIGS. 12 to 14; 16, 16 to 18; the same functions may be realized by other configurations. .
産業上の利用可能性  Industrial applicability
[0154] 以上説明したように、本発明に係る信号処理装置、光ディスク装置、記録再生装置 、集積回路および信号処理方法は、データ領域に上書きする場合においても消去パ ヮー OPCによって最適消去パワーを正しく求めることができるという効果を有し、例え ば、 DVD-RW, DVD + RW等に代表される書き換え可能型ディスクに対する記録 時の消去パワーを最適化する技術等として有用である。 As described above, the signal processing apparatus, optical disk apparatus, recording / reproducing apparatus, integrated circuit, and signal processing method according to the present invention correctly set the optimum erasing power by the erasing power OPC even when overwriting the data area. For example, it is useful as a technique for optimizing the erasing power at the time of recording on a rewritable disc represented by DVD-RW, DVD + RW, and the like.

Claims

請求の範囲 The scope of the claims
[1] 光ディスク装置において、最適消去パワーを決定する信号処理装置であって、 光ピックアップの出力信号から、光ディスクにおける前記光ピックアップによる光の 照射位置の記録品質を算出する記録品質取得手段と、  [1] A signal processing device for determining an optimum erasing power in an optical disc apparatus, a recording quality acquisition means for calculating a recording quality of an irradiation position of light by the optical pickup on the optical disc from an output signal of the optical pickup;
前記記録品質取得手段によって算出された記録品質に基づいて、前記光ディスク における試し書き領域に下地記録を行うための下地記録パワーを算出する下地記録 パワー算出手段とを備え、  Base recording power calculation means for calculating base recording power for performing base recording on the test writing area in the optical disc based on the recording quality calculated by the recording quality acquisition means;
最適消去パワーを決定する場合において、  In determining the optimum erase power,
前記光ピックアップに、前記光ディスクのデータ領域における記録品質取得位置に 光を照射させるステップ ωと、  Irradiating the optical pickup with light at a recording quality acquisition position in the data area of the optical disc; and
前記ステップ ωにおける前記光ピックアップの出力信号から、前記記録品質取得 手段によって、前記記録品質取得位置における記録品質を算出するステップ (b)と、 前記記録品質取得位置における記録品質に基づ!/、て、前記下地記録パワー算出 手段によって、下地記録パワーを算出するステップ (C)とを含む前処理を行い、 その後、前記試し書き領域に前記下地記録パワーによって下地記録が行われるよ うに前記光ピックアップを制御し、当該下地記録が行われた領域を最適消去パワー の算出に用いることを特徴とする信号処理装置。  (B) calculating the recording quality at the recording quality acquisition position from the output signal of the optical pickup in the step ω by the recording quality acquisition means; and based on the recording quality at the recording quality acquisition position! Then, the base recording power calculation means performs preprocessing including a step (C) of calculating the base recording power, and then the optical pickup is performed so that the base recording is performed in the test writing area with the base recording power. And a region where the background recording is performed is used for calculating the optimum erasing power.
[2] 請求項 1の信号処理装置において、  [2] In the signal processing device according to claim 1,
前記記録品質取得位置は、前記データ領域における記録開始位置であることを特 徴とする信号処理装置。  The signal processing apparatus, wherein the recording quality acquisition position is a recording start position in the data area.
[3] 請求項 1の信号処理装置において、 [3] The signal processing device according to claim 1,
前記データ領域に含まれる複数の分割領域のうち 2つ以上の分割領域毎に、当該 分割領域に設けられた記録品質取得位置について、前記記録品質取得手段による 記録品質の算出を行い、前記下地記録パワー算出手段による下地記録パワーの算 出を行うことを特徴とする信号処理装置。  For each of two or more divided areas included in the data area, for each recording quality acquisition position provided in the divided area, the recording quality is calculated by the recording quality acquisition means, and the base recording A signal processing apparatus characterized in that a base recording power is calculated by a power calculating means.
[4] 請求項 3の信号処理装置において、 [4] The signal processing device according to claim 3,
前記分割領域は、前記データ領域を、光ディスクのディスク管理領域に記録された 各回の記録の記録開始位置を示す情報に基づいて分割されたものであることを特徴 とする信号処理装置。 The divided area is obtained by dividing the data area based on information indicating a recording start position of each recording recorded in a disc management area of an optical disc. A signal processing device.
[5] 請求項 3の信号処理装置において、 [5] The signal processing device according to claim 3,
前記記録品質取得手段によって算出された記録品質を用いて、前記複数の分割 領域のうちの他の分割領域の記録品質を補間によって求め、  Using the recording quality calculated by the recording quality acquisition means, obtain the recording quality of the other divided areas of the plurality of divided areas by interpolation,
前記下地記録パワー算出手段は、前記他の各分割領域について、前記補間によ つて求めた記録品質に基づいて、前記下地記録パワーを算出することを特徴とする 信号処理装置。  The signal processing apparatus according to claim 1, wherein the background recording power calculation unit calculates the background recording power for each of the other divided areas based on the recording quality obtained by the interpolation.
[6] 請求項 1の信号処理装置において、 [6] The signal processing device according to claim 1,
前記記録品質取得位置は複数であり、  The recording quality acquisition position is plural,
前記下地記録パワー算出手段は、前記複数の記録品質取得位置の記録品質の平 均に基づいて、前記下地記録パワーを算出することを特徴とする信号処理装置。  The signal processing apparatus according to claim 1, wherein the base recording power calculation means calculates the base recording power based on an average recording quality at the plurality of recording quality acquisition positions.
[7] 請求項 6の信号処理装置において、 [7] The signal processing device according to claim 6,
前記記録品質取得位置は、前記データ領域を、光ディスクのディスク管理領域に 記録された各回の記録の記録開始位置を示す情報に基づいて分割した分割領域毎 に設けられて!/、ることを特徴とする信号処理装置。  The recording quality acquisition position is provided for each divided area obtained by dividing the data area based on information indicating the recording start position of each recording recorded in the disc management area of the optical disc! / A signal processing device.
[8] 請求項 1の信号処理装置において、 [8] The signal processing device according to claim 1,
前記データ領域が未記録か記録済み力、を判別する未記録 ·記録判別手段をさらに 備え、  It further comprises unrecorded / recording discriminating means for discriminating whether the data area is unrecorded or recorded
前記判別手段によって未記録と判別されたときは、前記前処理を省き、前記光ディ スクの管理領域に記録された推奨パワーを下地記録パワーとして設定することを特 徴とする信号処理装置。  A signal processing device characterized in that, when it is determined by the determination means that recording has not been performed, the pre-processing is omitted, and the recommended power recorded in the management area of the optical disk is set as the base recording power.
[9] 請求項 1の信号処理装置において、 [9] The signal processing device according to claim 1,
前記所定の記録品質取得位置の個数が互いに異なる複数種類の前記前処理を実 行可能に構成されており、  A plurality of types of the pre-processing different from each other in the number of the predetermined recording quality acquisition positions;
与えられた条件に基づいて、前記複数種類の前処理のうちのいずれかを選択して 実行することを特徴とする信号処理装置。  A signal processing apparatus that selects and executes any one of the plurality of types of pre-processing based on a given condition.
[10] 請求項 1の信号処理装置において、 [10] The signal processing device according to claim 1,
前記下地記録パワー算出手段は、記録品質と記録パワーとの関係を示す記録品 質-記録パワー関係式を用いて、下地記録パワーを算出するものであり、 前記前処理は、 The base recording power calculating means is a recorded product showing a relationship between recording quality and recording power. The base recording power is calculated using the quality-recording power relational expression.
ステップ ）の前に、前記試し書き領域に複数種類の記録パワーによって記録を行 い、前記記録品質取得手段によって記録品質を算出し、前記記録品質 ·記録パワー 関係式を算出するステップ (d)を含むことを特徴とする信号処理装置。  Before step (3), recording is performed in the test writing area with a plurality of types of recording power, the recording quality is calculated by the recording quality acquisition means, and the recording quality / recording power relational expression is calculated (d) A signal processing apparatus comprising:
[11] 請求項 10の信号処理装置において、 [11] The signal processing device according to claim 10,
記録品質 ·記録パワー関係式を記憶する関係式記憶手段を備え、  Recording quality · Equipped with relational expression storage means for storing recording power relational expression,
前記前処理において、ステップ（d)を実行する力、、または、ステップ（d)を実行せず に、前記関係式記憶手段に記憶された記録品質 ·記録パワー関係式を用いるかを、 与えられた条件に基づいて選択して実行することを特徴とする信号処理装置。  In the pre-processing, the ability to execute step (d) or whether to use the recording quality / recording power relation stored in the relational expression storage means without executing step (d) is given. A signal processing device, wherein the signal processing device is selected and executed based on the determined conditions.
[12] 請求項 1の信号処理装置と、 [12] The signal processing device according to claim 1,
前記光ピックアップとを備えていることを特徴とする光ディスク装置。  An optical disc apparatus comprising the optical pickup.
[13] 請求項 9の信号処理装置と、前記光ピックアップとを備えた光ディスク装置と、 使用されてレ、る駆動電源が AC電源である力、バッテリーであるかを判別し、判別結 果に基づ!/、て、前記複数種類の前処理のうちの!/、ずれを前記信号処理装置に実行 させる力、を決定する駆動電源判別手段とを備え、 [13] An optical disk device comprising the signal processing device according to claim 9 and the optical pickup, and whether the driving power source used is an AC power source or a battery is determined. Drive power determining means for determining! / Of the plurality of types of pre-processing, and force for causing the signal processing device to execute a deviation,
前記信号処理装置は、前記駆動電源判別手段による決定結果に応じて、前記複 数種類の前処理のうちのいずれかを選択して実行することを特徴とする記録再生装 置。  The signal processing apparatus selects and executes one of the plurality of types of pre-processing according to a determination result by the drive power source determination unit.
[14] 請求項 13の記録再生装置において、  [14] The recording / reproducing apparatus according to claim 13,
バッテリーの残量を測定するバッテリー残量測定手段をさらに備え、  A battery remaining amount measuring means for measuring the remaining amount of the battery,
前記駆動電源判別手段は、前記判別結果、および前記バッテリー残量測定手段に よって測定されたバッテリーの残量に基づいて、前記複数種類の前処理のうちのい ずれを前記信号処理装置に実行させるかを決定することを特徴とする記録再生装置  The drive power source determination unit causes the signal processing device to execute any of the plurality of types of pre-processing based on the determination result and the remaining battery level measured by the remaining battery level measurement unit. Recording / reproducing apparatus characterized by determining
[15] 請求項 9の信号処理装置と、前記光ピックアップとを備えた光ディスク装置と、 開始される録画が予約録画であるか即時録画であるかを判別し、判別結果に基づ V、て、前記複数種類の前処理のうちの!/、ずれを前記信号処理装置に実行させるか を決定する録画設定判別手段とを備え、 [15] An optical disk device comprising the signal processing device according to claim 9 and the optical pickup, and whether the recording to be started is a reserved recording or an immediate recording, and V, Whether the signal processing device executes! /, Deviation among the plurality of types of preprocessing. Recording setting determining means for determining
前記信号処理装置は、前記録画設定判別手段による決定結果に応じて、前記複 数種類の前処理のうちのいずれかを選択して実行することを特徴とする記録再生装 置。  The signal processing apparatus selects and executes any one of the plurality of types of preprocessing according to a determination result by the recording setting determination unit.
[16] 請求項 9の信号処理装置と、前記光ピックアップとを備えた光ディスク装置と、 前記複数種類の前処理のうちのいずれを前記信号処理装置に実行させるかを示 す情報を記憶する実行処理記憶手段とを備え、  16. An optical disk device comprising the signal processing device according to claim 9, the optical pickup, and an execution for storing information indicating which of the plurality of types of preprocessing is to be executed by the signal processing device. Processing storage means,
前記信号処理装置は、前記実行処理記憶手段に記憶された前記情報に応じて、 前記複数種類の前処理のうちのいずれかを選択して実行することを特徴とする記録 再生装置。  The signal processing apparatus selects and executes one of the plurality of types of preprocessing according to the information stored in the execution process storage unit.
[17] 請求項 9の信号処理装置と、前記光ピックアップとを備えた光ディスク装置と、 光ディスク装置の温度、または光ディスクの温度に基づいて、前記複数種類の前処 理のうちのいずれを前記信号処理装置に実行させるかを決定する温度判別手段とを 備え、  [17] The signal processing device according to claim 9, an optical disc device including the optical pickup, a temperature of the optical disc device, or a temperature of the optical disc, which of the plurality of types of preprocessing is the signal Temperature discrimination means for deciding whether to execute the processing device,
前記信号処理装置は、前記温度判別手段による決定結果に応じて、前記複数種 類の前処理のうちのいずれかを選択して実行することを特徴とする記録再生装置。  The recording / reproducing apparatus, wherein the signal processing apparatus selects and executes any one of the plurality of types of pre-processing according to a determination result by the temperature determination unit.
[18] 請求項 11の信号処理装置と、前記光ピックアップとを備えた光ディスク装置と、 ディスク IDを記憶するディスク ID記憶手段と、 [18] An optical disc device comprising the signal processing device according to claim 11, the optical pickup, disc ID storage means for storing a disc ID,
光ディスクのディスク管理領域力も検出したディスク IDと、前記ディスク ID記憶手段 に記憶されているディスク IDとが、一致しているかを判別するディスク ID情報判別手 段とを備え、  A disc ID information discriminating means for discriminating whether or not the disc ID in which the disc management area power of the optical disc is detected and the disc ID stored in the disc ID storage means match,
前記信号処理装置は、前記ディスク Iひ晴報判別手段が、一致していると判別したと きは、前記前処理において、ステップ (d)を実行せずに、前記関係式記憶手段に記 憶された記録品質 ·記録パワー関係式を用いる一方、一致してレ、な!/、と判別したとき は、前記前処理において、ステップ (d)を実行することを特徴とする記録再生装置。  The signal processing device stores the information in the relational expression storage means without executing step (d) in the preprocessing when the disc I fine information determination means determines that they match. The recording / reproducing apparatus is characterized in that, when the recorded recording quality / recording power relational expression is used, and it is discriminated that they coincide with each other, step (d) is executed in the preprocessing.
[19] 請求項 11の信号処理装置と、前記光ピックアップとを備えた光ディスク装置と、 記録品質 ·記録パワー関係式が前回算出されて力 前記光ディスクの着脱が行わ れたか否かを判別するディスク着脱情報判別手段とを備え、 前記信号処理装置は、前記ディスク着脱情報判別手段が、前記光ディスクの着脱 が行われな力、つたと判別したときは、前記前処理において、ステップ（d)を実行せず に、前記関係式記憶手段に記憶された記録品質 ·記録パワー関係式を用いる一方、 前記光ディスクの着脱が行われたと判別したときは、前記前処理において、ステップ（ d)を実行することを特徴とする記録再生装置。 [19] An optical disc device comprising the signal processing device of claim 11 and the optical pickup, and a disc for determining whether or not the optical disc has been attached / detached by previously calculating a recording quality / recording power relational expression Detachable information discriminating means, In the signal processing device, when the disc attachment / detachment information determination unit determines that the force that the optical disc is not attached / detached has been detected, the relational expression storage is performed without executing step (d) in the preprocessing. The recording / reproducing apparatus is characterized in that the step (d) is executed in the preprocessing when it is determined that the optical disk is attached / detached while the recording quality / recording power relation stored in the means is used.
[20] 請求項 11の信号処理装置と、前記光ピックアップとを備えた光ディスク装置と、 ディスク IDと光ディスクの有効期限とを対応付けて記憶する有効期限記憶手段と、 現在が、光ディスク装置に装着されて!、る光ディスクのディスク IDと対応づけて前記 有効期限記憶手段に記憶されている有効期限内であるか否力、を判別する有効期限 判別手段とを備え、 [20] An optical disc device comprising the signal processing device according to claim 11, the optical pickup, an expiration date storage means for storing the disc ID and the expiration date of the optical disc in association with each other, and currently attached to the optical disc device An expiration date determining means for determining whether or not it is within the expiration date stored in the expiration date storage means in association with the disc ID of the optical disc.
前記信号処理装置は、前記有効期限判別手段が、有効期限内であると判別したと きは、前記前処理において、ステップ (d)を実行せずに、前記関係式記憶手段に記 憶された記録品質 ·記録パワー関係式を用いる一方、有効期限内でないと判別した ときは、前記前処理において、ステップ (d)を実行することを特徴とする記録再生装 置。  When the expiration date determining means determines that the expiration date is within the expiration date, the signal processing apparatus stores the relational expression storage means without executing step (d) in the preprocessing. A recording / reproducing apparatus that uses step (d) in the pre-processing when it is determined that the recording quality / recording power relational expression is not used but is not within the expiration date.
[21] 請求項 11の信号処理装置と、前記光ピックアップとを備えた光ディスク装置と、 ディスク IDと、当該ディスク IDを有する光ディスクに対して前回行われた消去パヮ 一 OPC時における光ディスク装置の温度とを対応付けて記憶する温度記憶手段と、 光ディスク装置に装着されている光ディスク 140のディスク IDと対応付けて前記温 度記憶手段に記憶されている温度と今回の消去パワー OPC直前における温度との 差が所定値未満であるか否かを判別する温度判別手段とを備え、  [21] The temperature of the optical disk device at the time of OPC, the optical disk device including the signal processing device according to claim 11, the optical pickup, the disk ID, and the erasure performed previously for the optical disk having the disk ID. Between the temperature stored in the temperature storage means in association with the disk ID of the optical disk 140 mounted in the optical disk device and the temperature immediately before the current erasing power OPC. Temperature determining means for determining whether or not the difference is less than a predetermined value,
前記信号処理装置は、前記温度判別手段が、前記差が所定値未満であると判別し たときは、前記前処理において、ステップ（d)を実行せずに、前記関係式記憶手段に 記憶された記録品質 ·記録パワー関係式を用いる一方、前記差が所定値以上である と判別したときは、前記前処理において、ステップ（d)を実行することを特徴とする記 録再生装置。  When the temperature determining unit determines that the difference is less than a predetermined value, the signal processing device stores the relational expression storage unit without executing step (d) in the preprocessing. The recording / reproducing apparatus is characterized in that step (d) is executed in the preprocessing when it is determined that the difference is equal to or greater than a predetermined value while the recording quality / recording power relational expression is used.
[22] 光ディスク装置において、最適消去パワーを決定する集積回路であって、  [22] An integrated circuit for determining an optimum erasing power in an optical disc apparatus,
光ピックアップの出力信号から、光ディスクにおける前記光ピックアップによる光の 照射位置の記録品質を算出する記録品質取得手段と、 From the output signal of the optical pickup, the optical pickup by the optical pickup in the optical disc Recording quality acquisition means for calculating the recording quality of the irradiation position;
前記記録品質取得手段によって算出された記録品質に基づいて、前記光ディスク における試し書き領域に下地記録を行うための下地記録パワーを算出する下地記録 パワー算出手段とを備え、  Base recording power calculation means for calculating base recording power for performing base recording on the test writing area in the optical disc based on the recording quality calculated by the recording quality acquisition means;
最適消去パワーを決定する場合において、  In determining the optimum erase power,
前記光ピックアップに、前記光ディスクのデータ領域における記録品質取得位置に 光を照射させるステップ ωと、  Irradiating the optical pickup with light at a recording quality acquisition position in the data area of the optical disc; and
前記ステップ ωにおける前記光ピックアップの出力信号から、前記記録品質取得 手段によって、前記記録品質取得位置における記録品質を算出するステップ (b)と、 前記記録品質取得位置における記録品質に基づ!/、て、前記下地記録パワー算出 手段によって、下地記録パワーを算出するステップ (C)とを含む前処理を行い、 その後、前記試し書き領域に前記下地記録パワーによって下地記録が行われるよ うに前記光ピックアップを制御し、当該下地記録が行われた領域を最適消去パワー の算出に用いることを特徴とする集積回路。  (B) calculating the recording quality at the recording quality acquisition position by the recording quality acquisition means from the output signal of the optical pickup in the step ω, and based on the recording quality at the recording quality acquisition position! Then, the base recording power calculation means performs preprocessing including a step (C) of calculating the base recording power, and then the optical pickup is performed so that the base recording is performed in the test writing area with the base recording power. And an area where the background recording is performed is used for calculating the optimum erasing power.
光ディスク装置において、最適消去パワーを決定する信号処理方法であって、 光ピックアップに、光ディスクのデータ領域における記録品質取得位置に光を照射 前記ステップ ωにおける前記光ピックアップの出力信号から、前記記録品質取得 位置における記録品質を算出するステップ (b)と、  A signal processing method for determining an optimum erasing power in an optical disc apparatus, wherein the optical pickup is irradiated with light at a recording quality acquisition position in a data area of the optical disc, and the recording quality acquisition is performed from an output signal of the optical pickup in the step ω Calculating the recording quality at the position (b);
前記記録品質取得位置における記録品質に基づレ、て、前記光ディスクにおける試 し書き領域に下地記録を行うための下地記録パワーを算出するステップ (C)とを含む 前処理を行い、  Performing a pre-processing including a step (C) of calculating a base recording power for performing base recording on the trial writing area of the optical disc based on the recording quality at the recording quality acquisition position;
その後、前記試し書き領域に前記下地記録パワーによって下地記録が行われるよ うに前記光ピックアップを制御し、当該下地記録が行われた領域を最適消去パワー の算出に用!/、ることを特徴とする信号処理方法。  Thereafter, the optical pickup is controlled so that background recording is performed in the test writing area with the background recording power, and the area where the background recording is performed is used for calculating the optimum erasing power! Signal processing method.
PCT/JP2007/067423 2006-10-19 2007-09-06 Signal processing device, optical display device, recording/reproducing device, integrated circuit, and signal processing method WO2008047516A1 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005029479A1 (en) * 2003-09-18 2005-03-31 Matsushita Electric Industrial Co., Ltd. Recording/reproducing method and recording/reproducing device
JP2005196890A (en) * 2004-01-08 2005-07-21 Pioneer Electronic Corp Device and method for recording information and computer program
JP2006268943A (en) * 2005-03-23 2006-10-05 Victor Co Of Japan Ltd Optical disk recording and reproducing apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005029479A1 (en) * 2003-09-18 2005-03-31 Matsushita Electric Industrial Co., Ltd. Recording/reproducing method and recording/reproducing device
JP2005196890A (en) * 2004-01-08 2005-07-21 Pioneer Electronic Corp Device and method for recording information and computer program
JP2006268943A (en) * 2005-03-23 2006-10-05 Victor Co Of Japan Ltd Optical disk recording and reproducing apparatus

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