JP3800096B2 - Optical disc recording method, optical disc recording apparatus, and optical disc recording program - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to adjustment of a reproduction signal quality of recorded data when data is recorded on a write-once optical disc and a rewritable optical disc.
[0002]
[Prior art]
In recent years, in addition to lowering the price of optical discs, optical disc recording devices, data recording software, computers, etc. that can record data, large amounts of data can be recorded, so audio (music) data, computer data, images An optical disk is used for recording / reproducing various data such as (still image) data and moving image data, and for backup. As a recording optical disk capable of recording data, for example, a write-once optical disk capable of recording data only once such as CD-R, DVD-R, CD-RW, DVD-RW, DVD + RW, DVD-RAM, etc. There are rewritable optical discs that can rewrite data. Conventionally, in an optical disc recording apparatus for recording data on these optical discs, an apparatus recording parameter related to a reproduction signal quality of recorded data such as a write strategy is automatically set to an optimum value. It has become. When using the optical disc recording apparatus, the user can set whether or not to enable the function of automatically reducing the recording speed to the reproducible limit when the recording speed is not properly set.
[0003]
[Problems to be solved by the invention]
It is known that when music data of a press CD (a CD manufactured by a stamper, for example, a CD-DA) is copied onto an optical disc capable of recording data as described above, the sound quality is slightly different. . Since the music data recorded on the optical disc is digital data, it seems that the sound quality does not change from the original music data even if it is played back. However, due to differences in playback signal quality such as β and jitter, it is actually an expert and audiophile. As you can see, the sound quality of the music data will be different.
[0004]
At present, the cause of this difference is not clearly understood, but it is known that the sound quality changes when the device recording parameters related to the reproduction signal quality are changed.
[0005]
However, since the conventional optical disk recording apparatus automatically sets each parameter to an optimum value as described above, even if the data to be recorded on the optical disk is, for example, music data or computer data, Data was recorded with the same optimal parameters. This optimum parameter is a setting value that is most unlikely to cause an error when data is reproduced, but is not necessarily a parameter that provides the best sound quality when recording music data. Therefore, in order to obtain good sound quality when music data recorded on an optical disk is reproduced, it is necessary to set optimum parameters for music data separately from those for computers.
[0006]
However, when data is recorded on an optical disk with a conventional optical disk recording apparatus, a user cannot set a parameter indicating the quality of a reproduced signal of the recorded data. For example, when recording music data on a CD-R, it has not been possible to set the β value to a desired value in order to improve the reproduction sound quality of the music data. Thus, even beginners can easily record data on the optical disc, but the parameters representing the quality of the reproduced signal cannot be adjusted to the desired settings, so the specifications remain unsatisfactory for advanced users.
[0007]
Further, since the optical disk material (particularly the recording layer) differs depending on the type, manufacturer, model number, and the like, the write strategy and recording speed setting of the optical disk recording apparatus differ depending on the manufacturer, model number, etc. of the optical disk. Therefore, when the music data of the press CD is copied to the CD-R, the reproduction sound of the press CD and the reproduction sound of the CD-R are different depending on the manufacturer of the CD-R and the difference of the optical disk recording apparatus for recording the music data. Sometimes had different sound quality.
[0008]
Furthermore, optical discs capable of recording data differ in the maximum recording speed at which recording is possible and the recording speed at which recording with the best signal quality is possible, depending on the production time, model number, and the like. For example, an old-type optical disc with a low maximum recordable speed has a relatively thick recording film, so that recording with a high reproduction signal quality can be performed in a low speed region such as 1 × speed or 2 × speed. On the other hand, since a new type optical disc having a high maximum recordable speed has a relatively thin recording film, recording with a high reproduction signal quality can be performed in a higher speed region such as 4 × speed or 8 × speed. For this reason, when the optical disc does not correspond to the recording speed set by the user by mistake, some optical disc recording apparatuses have a function of automatically changing to the maximum recording speed corresponding to the optical disc. However, the changed maximum recording speed is based on the signal quality limit, and does not select a recording speed with good signal quality such as jitter. For this reason, when recording music data, the recording speed automatically set by this function cannot always be recorded with good sound quality. Therefore, there is a problem that the specifications remain unsatisfactory for users who desire good sound quality such as audiophiles.
[0009]
Because of these problems, audiophiles purchase an optical disc recording device suitable for recording music data, and are compatible with music data recording with this optical disc recording device, and can record music data with good sound quality. Was selected and purchased, and the optimum writing speed was adjusted for each selected optical disc. However, such work imposes cost and labor burdens on the user.
[0010]
Further, the CD-R recorded by the optical disk recording device is not always reproduced by the optical disk recording device, and when the optical disk recorded by the optical disk recording device is listened to by a CD player, the reproduction signal quality in the optical disk recording device is good. However, it cannot be said that the reproduction sound quality on other CD players is good.
[0011]
Accordingly, the present invention has been made to solve the above-described problems, and an object of the present invention is to provide an optical disc recording method in which a reproduction signal quality can be adjusted by a user or automatically according to data to be recorded, An optical disc recording apparatus and an optical disc recording program are provided.
[0012]
[Means for Solving the Problems]
The present invention has the following configuration as means for solving the above problems.
[0013]
  (1) Measure the playback signal quality of the data recorded on the copy source optical disc.ReRaw signal qualityBetween device recording parametersOn the basis of the, Measured playbackSignal qualityThe value of theInCorrespondenceSet device recording parametersAndData recorded on the copy source optical discTRecording optical discBased on the set device recording parameter valueIt is characterized by recording.
[0014]
  In this configuration, the reproduction signal quality of the data recorded on the copy source optical disk is measured.ReRaw signal qualityBetween device recording parametersOn the basis of the, Measured playbackSignal qualityThe value of theInCorrespondenceSet device recording parametersAndData recorded on the copy source optical discTRecording optical discBased on the set device recording parameter valueRecord. Therefore, when a user copies music data of a press CD to a CD-R, for example, the music data can be recorded on the CD-R with substantially the same reproduction signal quality as that of the press CD as a copy source. The original optical disc does not have the problem of different sound quality due to the different quality.Same asMusic data can be reproduced with such sound quality.
[0015]
Signal quality parameters representing the reproduction signal quality include, in addition to the β value and asymmetry, HF modulation degree, HF amplitude, HF reflectance, average reflectance, crosstalk, jitter, deviation, effective length, and the like. Further, when measuring the signal quality of music data, it is preferable to set one or more of the above-mentioned signal quality parameters to set device recording parameters.
[0016]
The device recording parameter related to the reproduction signal quality when recording data is a parameter that determines the reproduction signal quality of the data when recording data on the optical disc. For example, the recording speed, the write strategy, and the data are There are a laser power irradiated to the optical disc during recording, a target β value in OPC and running OPC, a focus balance, a tracking balance, and the like.
[0017]
  (2) The relationship between the reproduction signal quality of the data recorded on the optical disk and the device recording parameters related to the reproduction signal quality is stored in advance.
  Measure playback signal quality of data recorded on copy source optical discAndThe playback signal quality and the relationship between the playback signal quality and the device recording parameters.In chargeOn the basis ofCorresponds to the measured reproduction signal quality valueDevice recording parametersThe value of theThe setAndData recorded on the copy source optical discTRecording optical discBased on the set device recording parameter valueIt is characterized by recording.
[0018]
  In this configuration, the relationship between the reproduction signal quality of the data recorded on the optical disk and the device recording parameters related to the reproduction signal quality is stored in advance, and the reproduction signal quality of the data recorded on the copy source optical disk is measured.AndThe playback signal quality and the relationship between the playback signal quality and the device recording parameters.In chargeOn the basis ofCorresponds to the measured reproduction signal quality valueDevice recording parametersThe value of theThe setAndData recorded on the copy source optical discTRecording optical discBased on the set device recording parameter valueRecord. Therefore, when a user copies music data of a press CD to a CD-R, for example, based on the relationship between the stored reproduction signal quality and the apparatus recording parameters related to the reproduction signal quality, the press CD that is the copy source Music data can be recorded on a CD-R with substantially the same playback signal quality as in the past, so that there is no problem that the playback quality is different because the signal quality is different as before, and the sound quality is almost the same as that of the original optical disc. It becomes possible to play music data.
[0019]
  (3) Measure the reproduction signal quality of the data recorded on the copy source optical disc,
  Perform test writing on the recording optical disc, and obtain in advance the relationship between the playback signal quality and the device recording parameters related to the playback signal quality from the playback signal quality of the data trial-written on the recording optical disc,
  in frontThe relationship between playback signal quality and device recording parameters related to playback signal qualityIn chargeOn the basis of, MeasuredPlayback signal qualityThe value of theInCorrespondenceDevice recording parametersThe value of theThe setAndData recorded on the copy source optical discTRecording optical discBased on the set device recording parameter valueIt is characterized by recording.
[0020]
  In this configuration, the reproduction signal quality of the data recorded on the copy source optical disk is measured, test writing is performed on the recording optical disk, and the reproduction signal quality is determined from the reproduction signal quality of the data trial-written on the recording optical disk. Obtain in advance the relationship with the device recording parameters related to the playback signal quality,in frontThe relationship between playback signal quality and device recording parameters related to playback signal qualityIn chargeOn the basis of, MeasuredPlayback signal qualityThe value of theInCorrespondenceDevice recording parametersThe value of theThe setAndData recorded on the copy source optical discTRecording optical discBased on the set device recording parameter valueRecord. Therefore, when the user copies music data of a press CD to a CD-R, for example, the relationship between the reproduction signal quality and the apparatus recording parameters related to the reproduction signal quality is actually obtained by trial writing, and then the copy source. Since music data can be recorded on a CD-R with a playback signal quality substantially the same as that of a press CD, there is no problem that the reproduced sound quality is different due to the different signal quality as before, and it is almost the same as the optical disc of the copy source. Music data can be played with the sound quality of.
[0029]
  (4)Storage means for storing the relationship between the reproduction signal quality of the data recorded on the optical disc and the device recording parameters related to the reproduction signal quality;
  Signal quality measuring means for measuring the reproduction signal quality of the data recorded on the copy source optical disc;
  Relationship between playback signal quality and device recording parametersIn chargeOn the basis of,Corresponds to the reproduction signal quality value of the copy sourceDevice recording parametersThe value of theThe setDoReproduction signal quality adjustment means;
  The copy sourceOn optical discRecordHas beenData to the optical disc for recordingBased on the value of the adjusted device parameterAnd a data recording means for recording.
[0030]
  In this configuration, the relationship between the reproduction signal quality of the data recorded on the optical disk by the storage means and the apparatus recording parameters related to the reproduction signal quality is stored, and the data recorded on the copy source optical disk by the signal quality measurement means is stored. The reproduction signal quality is measured, and the relation between the reproduction signal quality and the device recording parameter is measured by the reproduction signal quality adjustment means.In chargeOn the basis ofCorresponds to the reproduction signal quality value of the copy sourceSet device recording parameters to,Data recorded on the copy source optical discSame asAdjusted so as to achieve a reproduction signal quality such asOn optical discRecordHas beenData to optical disc for recordingBased on the value of the adjusted parameterIt is characterized by recording. Therefore, the same effect as (2) can be obtained.
[0031]
  (5)Signal quality measuring means for measuring the reproduction signal quality of the data recorded on the copy source optical disc;
  Trial writing means for performing trial writing on a recording optical disc and obtaining a relationship between the reproduction signal quality of the trial written data and the reproduction signal quality and the apparatus recording parameters related to the reproduction signal quality;,
in frontRelationship between playback signal quality and device recording parametersIn chargeOn the basis ofThe copy sourcePlayback signal qualityThe value of theInCorrespondenceDevice recording parametersThe value of theSet upSetPlayback signal quality adjustment means,
  The copy sourceOn optical discRecordHas beenData to the optical disc for recordingBased on the value of the adjusted device parameterAnd a data recording means for recording..
[0032]
  In this configuration, the signal quality measuring means measures the reproduction signal quality of the data recorded on the copy source optical disk, the test writing means performs test writing on the recording optical disk, and the test writing data from the reproduced signal quality The relationship between the reproduction signal quality and the apparatus recording parameter related to the reproduction signal quality is obtained, and based on the reproduction signal quality of the copy source by the reproduction signal quality adjusting means and the relationship between the reproduction signal quality and the apparatus recording parameter. A device recording parameter value corresponding to the reproduction signal quality value of the copy source is set and adjusted so as to achieve a reproduction signal quality equivalent to the data recorded on the copy source optical disc. Is recorded on a recording optical disk. Therefore, the same effect as (3) can be obtained.
[0056]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a block diagram showing a configuration of an optical disk recording apparatus according to an embodiment of the present invention. As shown in FIG. 1, the optical disk recording apparatus 1 includes an optical pickup 10, a spindle motor 11, an RF amplifier 12, a servo circuit 13, an address detection circuit 14 that is identification means, a decoder 15, signal quality adjustment means, identification means, And a system control unit 16, an encoder 17, a strategy circuit 18, a laser driver 19, a laser power control circuit 20, a frequency generator 21, an envelope detection circuit 22, a C1 error detection circuit 23, and a reproduction signal quality measurement means, which are setting means. A reproduction signal quality detection circuit unit 24, a data storage circuit 25, a storage unit 26 as a storage unit, an operation unit 27 as an operation unit and an input unit, and a display unit 28 as a display unit are provided. The optical pickup 10, the servo circuit 13, the encoder 17, the strategy circuit 18, the laser driver 19 and the laser power control circuit 20 constitute a data recording unit as data recording means.
[0057]
  Spindle motor11Is a motor that rotationally drives the optical disk D that is the target of data recording. Further, an optical disk holding mechanism (not shown) including a turntable for holding (chucking) the optical disk is provided at the tip of the rotating shaft of the spindle motor. The optical pickup 10 includes an optical system such as a laser diode, a lens and a mirror, a return light (reflected light) light receiving element, a focus servo mechanism, and the like. Also, during recording and reproduction, the optical disk D is irradiated with laser light, the return light from the optical disk D is received, and an EFM (Eight to Fourteen Modulation) modulated RF signal, which is a received light signal, is output to the RF amplifier 12. To do. The focus servo mechanism is a servo mechanism for keeping the distance between the lens of the optical pickup 10 and the data surface of the optical disk constant. Further, the optical pickup 10 includes a monitor diode, and a current is generated in the monitor diode by the return light of the optical disc D, and this current is supplied to the laser power control circuit 20.
[0058]
The frequency generator 21 outputs a signal for detecting the rotation angle and the rotation number output from the spindle motor 11 to the servo circuit 13.
[0059]
The RF amplifier 12 amplifies the EFM-modulated RF signal supplied from the optical pickup 10 and reproduces the amplified RF signal by measuring the quality of the reproduction signal by the servo circuit 13, the address detection circuit 14, the envelope detection circuit 22, and the reproduction signal. The data is output to the signal quality detection circuit unit 24 and the decoder 15.
[0060]
During reproduction, the decoder 15 performs EFM demodulation on the EFM-modulated RF signal supplied from the RF amplifier 12 to generate reproduction data, and outputs the reproduction data to the data storage circuit 25. Further, at the time of recording, the decoder 15 performs EFM demodulation on the RF signal supplied from the RF amplifier 12 when reproducing the area recorded by the test recording. Based on the demodulated signal, the C1 error detection circuit 23 detects a C1 error and outputs the C1 error to the system control unit 16. The C1 error detection circuit 23 performs error correction using an error correction code called CIRC (Cross Interleaved Reed Solomon Code) on the EFM demodulated signal, and detects the number of C1 errors (C1 error value).
[0061]
In the optical disc recording apparatus 1 according to the present embodiment, when data is recorded, test recording is performed in a PCA (Power Calibration Area) area on the inner circumference side of the optical disc D prior to the main recording. Then, based on the reproduction result of the test-recorded area, a recording condition capable of performing good recording on the optical disc D is obtained. The C1 error detection circuit 23 detects the C1 error of the reproduction signal in such a test-recorded area and outputs it to the system control unit 16.
[0062]
Here, an area for test recording on the optical disc D will be described with reference to FIG. FIG. 2 is a cross-sectional view showing the area configuration of the optical disc. The outer diameter of the optical disk D is 120 mm, the section of the optical disk D having a diameter of 46 to 50 mm is prepared as the lead-in area 114, and the program area 118 and the remaining area 120 for recording data are prepared on the outer peripheral side. On the other hand, an inner circumference side PCA area 112 is prepared on the inner circumference side from the lead-in area 114. In the inner peripheral PCA area 112, a test area 112a and a count area 112b are prepared. As described above, test recording is performed in the test area 112a prior to the main recording. Here, an area where test recording can be performed a plurality of times is prepared as the test area 112a. In the count area 112b, an EFM signal indicating how much of the test area 112a has been recorded at the end of the test recording is recorded. Therefore, when performing test recording on the optical disc D next time, by detecting the EFM signal in the count area 112b, it can be understood from which position in the test area 112a the test recording should be started. It has become. In the optical disk recording apparatus 1 according to the present embodiment, test recording is performed in the test area 112a before the main recording of data.
[0063]
Returning to FIG. 1, the data storage circuit 25 temporarily stores the reproduction data of the optical disc D output from the decoder 15, the data input from the outside of the optical disc recording apparatus 1, and the like. Then, the stored data is output to a data playback unit (not shown) during playback, and the stored data is output to the encoder 17 when data is recorded on the recording optical disk.
[0064]
The address detection circuit 14 extracts a wobble signal component included in the RF signal supplied from the RF amplifier 12, time information (address information) of each position included in the wobble signal component, and identification information for identifying the optical disc Information indicating the type of the disk, such as (disk ID) and pigment used in the disk, is decoded and output to the system control unit 16. Here, the wobble signal component is a signal component representing the meandering frequency of the meandering recording track of the recording optical disk, and time information, identification information, etc. are recorded by FM modulating the meandering frequency.
[0065]
The reproduction signal quality detection circuit unit 24 calculates the β value and asymmetry related to the reproduction signal quality from the RF signal supplied from the RF amplifier 12 when reproducing the test recording area of the optical disc D, and calculates the calculation result as a system. Output to the control unit 16. Here, the β value is obtained by β = (a + b) / (ab), where a is the peak level (sign is +) of the EFM modulated signal waveform and b is the bottom level (sign is-). Can do.
[0066]
The envelope detection circuit 22 detects an EFM signal in the count area 112b of the optical disk D described above in order to detect from which part of the test area 112a of the optical disk D the test recording starts before performing test recording on the optical disk D. Detect envelopes.
[0067]
The servo circuit 13 performs rotation control of the spindle motor 11 and focus control, tracking control, and feed control of the optical pickup 10. In the optical disk recording apparatus 1 according to the present embodiment, at the time of recording, the CAV (Constant Angular Velocity) system that drives the optical disk D at a constant speed and the CLV (Constant) that drives the optical disk D at a constant linear speed are used. Linear Velocity) method can be switched. Therefore, the servo circuit 13 switches between the CAV method and the CLV method according to the control signal supplied from the system control unit 16. Here, in the CAV control by the servo circuit 13, the rotation speed of the spindle motor 11 detected by the frequency generator 21 is controlled so as to coincide with the set rotation speed. In the CLV control by the servo circuit 13, the spindle motor 11 is controlled so that the wobble signal in the RF signal supplied from the RF amplifier 12 has a set speed magnification.
[0068]
The encoder 17 performs EFM modulation on the recording data supplied from the data storage circuit 25 and outputs it to the strategy circuit 18. The strategy circuit 18 performs time axis correction processing on the EFM signal supplied from the encoder 17 and outputs the result to the laser driver 19. The laser driver 19 drives the laser diode of the optical pickup 10 according to the signal modulated according to the recording data supplied from the strategy circuit 18 and the control of the laser power control circuit 20.
[0069]
The laser power control circuit 20 controls the laser power emitted from the laser diode of the optical pickup 10. Specifically, the laser power control circuit 20 is based on the current value supplied from the monitor diode of the optical pickup 10 and the information indicating the target value of the optimum laser power supplied from the system control unit 16, The laser driver 19 is controlled so that laser light with an optimum laser power is emitted from the optical pickup 10.
[0070]
  The system control unit 16 includes a CPU, a ROM, a RAM, and the like, and controls each unit of the optical disc recording apparatus 1 according to a program stored in the ROM. As described above, the system control unit 16 controls each unit of the apparatus to perform test recording on a predetermined area of the optical disc D set in the optical disc recording apparatus 1 prior to the main recording of data. Then, the system control unit 16 reads from the signal obtained when reproducing the test recorded area described above.RegenerationSignal quality detection circuitPartBased on the reproduction signal quality such as the β value detected by 24, the count value of the C1 error detected by the C1 error detection circuit 23, etc., the reproduction signal for the optical disk D on which the optical disk recording apparatus 1 has performed test recording is recorded. By obtaining the relationship between the quality parameter and the apparatus recording parameter (recording condition), a recording speed determination process for obtaining a recordable speed capable of performing good recording without a recording error is performed.
[0071]
The storage unit 26 is for storing data obtained in advance through experiments and the like. The operation unit 27 is used for selecting and inputting a parameter representing the reproduction signal quality. The display unit 28 is for displaying the reproduction signal quality of the data recorded on the optical disc.
[0072]
  The optical disk recording apparatus 1 configured as described above can realize an optical disk recording / reproducing apparatus by a personal computer. That is, the optical pickup 10, the spindle motor 11, and the frequency generator 21 can be realized by an optical disk drive. RF amplifier 12, servo circuit 13, address detection circuit 14, decoder 15, encoder 17, strategy circuit 18, laser driver 19, laser power control circuit 20, envelope detection circuit 22, C1 error detection circuit 23, andRegenerationSignal quality detection circuitPart24 can be realized by an MPU or a peripheral circuit. Alternatively, it can be realized by a peripheral circuit of the optical disk drive device. The system control unit 16 can be realized by an MPU. The data storage circuit 25 and the storage unit 26 can be realized by a memory, a RAM, and a ROM. The operation unit 27 can be realized by an input device such as a keyboard or a mouse. The display unit 28 can be realized by a monitor.
[0073]
  An operation at the time of data recording on the optical disc D in the optical disc recording apparatus 1 configured as described above will be described. The inventors conducted various experiments and studies to obtain good sound quality when copying music data from a source disk to a recordable optical disk. As a result, the playback signal waveform of the music data recorded on the source disk and the music data of the copy destination optical disk, that is, the playback signal qualitySameIn this way, it was found that when music data was recorded on a recordable optical disc as a copy destination, the sound quality was almost the same as that of the source disc.
[0074]
  Therefore, the present inventionThe fruitIn the embodiment, when copying the data recorded on the optical disc, the reproduction signal quality of the optical disc on which data has been recorded (copying source optical disc) is measured, and the reproduction signal quality is measured.Same asThe apparatus recording parameters related to the reproduction signal quality are set to predetermined values so that the reproduction signal quality can be obtained, and the data is recorded on the recording optical disc.
[0075]
  For example, when reading music data from a press CD (music CD) or recorded CD-R, the reproduction signal quality is measured to obtain signal quality parameters such as β value and asymmetry. Next, the playback waveform of the original music dataSameBased on the measured signal quality parameter, the apparatus recording parameter related to the reproduction signal quality (for example, the target β value when performing OPC) is set to a predetermined value so as to be reproduced in the same manner. Then, the music data recorded on the copy source optical disc is recorded on the recording optical disc with the above settings. It should be noted that the reproduction signal quality is measured when the test data recorded with a plurality of laser powers is reproduced by the OPC performed before the actual recording, and is related to the measured signal quality parameter and the reproduction signal quality. It is preferable to obtain the relationship with the apparatus recording parameter, store it in the storage unit 26, and adjust the apparatus recording parameter. Further, the relationship between the signal quality parameter indicating the reproduction signal quality and the device recording parameter related to the reproduction signal quality is obtained in advance through experiments and stored in the storage unit 26, and the storage unit 26 is recorded at the time of recording. It is preferable to adjust the device recording parameters by reading from the device.
[0076]
As a result, the reproduction signal waveform and reproduction signal quality of the music data of the copy source optical disc and the music data of the copy destination optical disc are substantially the same, and the sound quality of the music data can be adjusted in substantially the same manner. The data is not limited to music data and may be other data.
[0077]
Signal quality parameters representing the reproduction signal quality include, in addition to the β value and asymmetry, HF modulation degree, HF amplitude, HF reflectance, average reflectance, crosstalk, jitter, deviation, effective length, and the like. Further, when measuring the signal quality of music data, it is preferable to set one or more of the above-mentioned signal quality parameters to set device recording parameters. In addition, these signal quality parameters are not completely independent, and if one parameter is changed, other parameters may change accordingly.
[0078]
The device recording parameter related to the reproduction signal quality when recording data is a parameter for determining the reproduction signal quality of the data when recording data on the optical disk. For example, the optical disk is used when recording the write strategy and data. There are laser power to irradiate, target β value in OPC and running OPC, focus balance, tracking balance, recording speed and the like.
[0079]
Furthermore, if there is a difference between the inner and outer circumferences of the reproduction signal quality at the copy source, recording can be performed while changing the apparatus recording parameter at the recording position (radius position or time), and a substantially similar reproduction signal quality inner and outer circumference difference is added good.
[0080]
  FIG. 3 shows the present invention.The fruitIt is an example of the flowchart for demonstrating embodiment. Here, the signal quality parameter indicating the reproduction signal quality is described below as a β value. First, a user sets a source disc such as a press CD (music CD) or a recorded CD-R in the optical disc recording apparatus 1 and operates the operation unit 27 to reproduce music data (s1). When the system control unit 16 receives a signal from the operation unit 27, the system control unit 16 performs automatic servo adjustment to read the music data of the source disk. The servo circuit 13 outputs control signals for the focus servo mechanism and the tracking servo mechanism to the optical pickup 10. Further, a rotation control signal is output to the spindle motor 11. The system control unit 16 outputs a predetermined signal for controlling the laser power to the laser power control circuit 20. The laser power control circuit 20 outputs a control signal for the laser driver 19, and outputs a power control signal for laser light emitted from the laser diode to the optical pickup 10 from the laser driver 19. The laser diode of the optical pickup 10 is irradiated with laser light having a predetermined laser power, and the return light (reflected light) of the laser light is received by the light receiving element of the optical pickup 10 and converted into an electric signal to be converted into the RF amplifier 12. (S2).
[0081]
The music data signal amplified by the RF amplifier 12 is decoded by the decoder 15 and output to the data storage circuit 25, and the music data of the source disk is stored in the data storage circuit 25 (s3).
[0082]
  The signal amplified by the RF amplifier 12 isRegenerationSignal quality detection circuitPart24,RegenerationSignal quality detection circuitPart24 measures the reproduction signal quality of the music data of the source disk (s4). The measurement result is output to the system control unit 16 and stored in the built-in RAM (s5). When all the music data on the source disk is stored in the data storage circuit 25, the system control unit 16 displays on the display unit 28 that the storage of the music data / reproduction signal quality of the source disk has been completed (s6).
[0083]
When the user confirms this display, the user takes out the source disk from the optical disk recording apparatus 1 and sets an optical disk capable of recording data in the optical disk recording apparatus 1 instead (s7).
[0084]
The system control unit 16 performs automatic servo adjustment of the optical disk on which data is recorded, and outputs predetermined signals to the servo circuit 13, the laser power control circuit 20, and the encoder 17. The optical pickup 10 irradiates the optical disk with laser light, and the return light is received and converted by the light receiving element and output to the RF amplifier 12. This signal is output to the address detection circuit 14, and ATIP (Absolute Time In Pre-groove) information in the signal is read to determine the type of the optical disc. Subsequently, the address of the optical disk is detected and output to the system control unit 16 (s8). The system control unit 16 reads data stored in advance in the storage unit 26 based on the optical disc identification information. Then, the apparatus recording parameters are set based on the data and the measurement result of the reproduction signal quality stored in the RAM (s9).
[0085]
  Subsequently, the system control unit 16 performs OPC (Optimum Power Control) in order to determine the optimum laser power at the same time as checking whether there is a problem in the setting of the apparatus recording parameter. That is, a predetermined signal is output to the servo circuit 13, the laser power control circuit 20, the encoder 17, and the strategy circuit 18 based on the set apparatus recording parameter. The optical pickup 10 records and reproduces a test signal on the PCA. This return light passes through the RF amplifier 12.RegenerationThe signal is output to the signal quality detection circuit unit 24 (s10). The reproduction signal quality detection circuit unit 24 detects the reproduction signal quality of the test signal and outputs it to the system control unit 16 (s11). The system control unit 16 compares the reproduction signal quality data output from the reproduction signal quality detection circuit unit 24 with the reproduction signal quality of the source disk stored in the RAM (s12). Comparison result,sameIf there is a problem such as that the reproduction signal quality cannot be obtained, the apparatus recording parameter of s9 is changed and s9 to s12 are executed again. If there is no problem, the music data read from the source disk stored in the data storage circuit 25 is recorded on the optical disk by setting the apparatus recording parameters. That is, the music data is output from the data storage circuit 25 and a predetermined signal is output to the servo circuit 13, the laser power control circuit 20, the encoder 17, and the strategy circuit 18 based on the set device recording parameter. Then, the music data is recorded by irradiating the recording optical disk with laser light corresponding to the music data from the optical pickup 10 (s13). When the recording of the music data is completed, the system control unit 16 displays that the recording is completed on the display unit 28 (s14). Then, the process ends.
[0086]
The data stored in advance in the storage unit 26 is a device recording parameter related to the quality of a reproduction signal when data is recorded, and includes a write strategy corresponding to disc identification information, a target β value in OPC, and the like. . Further, data representing the relationship between the signal quality parameter indicating the reproduction signal quality corresponding to the disc identification information and the device recording parameter related to the reproduction signal quality is obtained in advance by experiments or the like and stored in the storage unit 26. It is even better to leave it. By adjusting the apparatus recording parameters based on the relationship obtained in advance with the reproduction signal quality of the source disk, recording can be performed with substantially the same reproduction signal quality as the source disk.
[0087]
In the OPC, test data is recorded with a plurality of laser powers, reproduced, and reproduced signal quality is determined to determine the optimum laser power. At this time, by measuring the reproduction signal quality under a plurality of recording conditions, the relationship between the signal quality parameter indicating the reproduction signal quality on the optical disc and the apparatus recording parameter related to the reproduction signal quality may be obtained. Further, instead of recording by changing the laser power in the OPC, the apparatus recording parameters such as the write strategy may be changed to obtain the relationship with the apparatus recording parameters related to the reproduction signal quality. By adjusting the apparatus recording parameters based on the relationship obtained here and the reproduction signal quality of the source disk, recording can be performed with substantially the same reproduction signal quality as that of the source disk. Or you may return to s9 once again and verify adjustment conditions.
[0088]
  next,lightDisc recording deviceThenThe user can set the signal quality parameter indicating the playback signal quality of the data to be recorded on the recording optical disk to an arbitrary value.TheIn other words, when music data is recorded on an optical disc by an optical disc recording device, the sound quality that the user feels good can be set by making it possible to set a signal quality parameter that represents the playback signal quality according to user preferences. Is to provide. Details will be described below.
[0089]
Signal quality parameters representing the reproduction signal quality include, in addition to the β value and asymmetry, HF modulation degree, HF amplitude, HF reflectance, average reflectance, crosstalk, jitter, deviation, effective length, and the like. In addition, these signal quality parameters are not completely independent, and if one parameter is changed, other parameters may change accordingly.
[0090]
The device recording parameter related to the reproduction signal quality when recording data is a parameter for determining the reproduction signal quality of the data when recording data on the optical disk. For example, the optical disk is used when recording the write strategy and data. There are laser power to irradiate, target β value in OPC and running OPC, focus balance, tracking balance, recording speed and the like.
[0091]
  However, when the above apparatus recording parameters are changed, the degree of substitution of the above signal quality parameters differs for each type of disc. Therefore, when the user changes the apparatus recording parameter, it becomes difficult to obtain a desired reproduction signal quality.Optical disk recording deviceIn this case, the user can set a signal quality parameter indicating the reproduction signal quality according to his / her preference, and the apparatus side has a relationship between the signal quality parameter indicating the reproduction signal quality on the optical disc and the apparatus recording parameter related to the reproduction signal quality. Thus, the apparatus recording parameters are adjusted based on the set arbitrary signal quality parameters.
[0092]
Also, depending on the playback signal quality parameter value, the data recorded on the recording optical disk may not be played back, or the target playback signal quality may not be achieved unless it is outside the setting range of the device recording parameters. When the user tries to select the setting of the reproduction signal quality parameter value, a warning may be displayed on the display unit, or the setting range of the reproduction signal quality parameter value may be limited.
[0093]
FIG. 4 is a display example for setting a signal quality parameter indicating the quality of a reproduction signal to be displayed on the display unit. As shown in FIG. 4A, for example, a graph may be displayed on the display unit, and the user may select a setting value from this graph. Further, as shown in FIG. 4B, a table in which a pattern of signal quality parameters representing reproduction signal quality is set may be displayed and a setting value may be selected from this table. Furthermore, as shown in FIG. 4C, a gauge that allows the user to set an arbitrary value may be displayed on the display unit so that the user can select a desired setting value. In this case, for example, when the set β value is changed, the parameters of C1 error, jitter, and sound change accordingly.
[0094]
Thus, since the user can set the signal quality parameter representing the playback signal quality to an arbitrary value, for example, when recording music data on an optical disk, the user can set the sound quality as desired, and the conventional optical disk recording Costs and time for selecting a device and a recording optical disk can be reduced.
[0095]
Further, when the recording device and the playback device are different, the sound quality can be set in accordance with the characteristics of the playback device, and the problem that the recording device has poor signal quality when reproduced by the playback device even if the signal quality is good can be reduced.
[0096]
  Also,lightIn the disk recording apparatus, it is preferable to provide a changeover switch for switching whether the apparatus automatically sets the signal quality parameter indicating the reproduction signal quality or whether the user sets an arbitrary value. In this case, it is necessary to set an initial value (default value) when the apparatus automatically sets a parameter representing the reproduction signal quality.
[0097]
  FIG.Operation of optical disk recording deviceIt is an example of the flowchart for demonstrating. It is assumed that data to be recorded on the optical disc is stored in the data storage circuit 25 in advance. First, the user operates the changeover switch of the operation unit 27 to select a mode in which the user sets a signal quality parameter indicating the reproduction signal quality. Then, a recording optical disk is set in the optical disk recording apparatus 1 (s31). The system control unit 16 performs automatic servo adjustment in order to determine the type of the set recording optical disk. Predetermined signals are output to the servo circuit 13, the laser power control circuit 20, and the encoder 17, respectively. With these signals, laser light is irradiated from the optical pickup 10 onto the recording optical disk, and the return light is received by the light receiving element of the optical pickup 10, converted into an electrical signal, and output to the RF amplifier 12. The signal amplified by the RF amplifier 12 is output to the address detection circuit 14, and ATIP information (address information) is detected by the address detection circuit 14 and output to the system control unit 16 (s 32). The system control unit 16 discriminates the type of the optical disk based on this signal, and calls the data pattern of the signal quality parameter indicating the playback signal quality from the storage unit 26. Then, this data is converted into, for example, a table and displayed on the display unit 28 (s33). The user operates the operation unit 27 to select a desired value of the signal quality parameter from the table displayed on the display unit 28, and inputs the value (s34). Based on the value of the selected signal quality parameter, the system control unit 16 adjusts the device recording parameter related to the reproduction signal quality (s35). The adjustment is performed based on the relationship between the signal quality parameter indicating the reproduction signal quality on the optical disc stored in the storage unit 26 and the device recording parameter related to the reproduction signal quality, and the set arbitrary signal quality parameter. The recording parameters may be adjusted. Alternatively, in the OPC described in the next stage, the device recording is performed based on the relationship between the signal quality parameter indicating the playback signal quality on the optical disc and the device recording parameter related to the playback signal quality and the set arbitrary signal quality parameter. The parameter may be adjusted.
[0098]
  Subsequently, in order to perform OPC, predetermined signals are output to the servo circuit 13, the laser power control circuit 20, and the encoder 17 to perform test recording. The test recorded part is reproduced, the return light is received by the light receiving element of the optical pickup 10 and converted into an electric signal, and the amplified signal is received from the RF amplifier 12.RegenerationIt is output to the signal quality detection circuit unit 24 (s36). The system control unit 16RegenerationThe optimum laser power is set based on the signal output from the signal quality detection circuit unit 24 and the like. Then, the system control unit 16 outputs data to be recorded on the recording optical disk from the data storage circuit 25 (s37). This data is irradiated as laser light from the optical pickup 10 via the encoder 17, the strategy circuit 18, and the laser driver 19, and the data is recorded on the optical disk (s38). When the data recording is completed, the optical disc recording apparatus 1 displays on the display unit 28 that the data recording is completed, and ends the processing (s39).
[0099]
  next, Optical disk recording deviceIs a signal quality parameter that represents the quality of the reproduced signal in accordance with the type and format of data to be recorded, such as CD-DA (audio data) or CD-ROM MODE-1 (data for personal computer).TheDynamically set, that is, select a setting suitable for each data type. The apparatus recording parameters are adjusted / set according to the setting, and data is recorded on the recording optical disk. That is, when data is recorded on an optical disc by an optical disc recording apparatus, an environment is provided in which a signal quality parameter pattern relating to the quality of a reproduction signal corresponding to the data can be set.
[0100]
  The details are described below.. lightDisc recording deviceThenWhen the data recorded on the copy source optical disk is read, or when the recording data is transmitted from the outside to the data storage circuit, the system control unit 16ButThe type of recording data is determined. Then, the system control unit 16 sets a signal quality parameter representing the reproduction signal quality based on the determination result. For example, parameters relating to the playback signal quality are automatically set so that an error does not occur during playback when the recording data is computer data, and the sound quality is optimal when music data. The apparatus recording parameters are automatically adjusted and set according to the setting, and data is recorded on the recording optical disk. Alternatively, the apparatus recording parameters may be set directly and automatically by storing the relationship between the reproduction signal quality and the apparatus recording parameters in advance. Thus, since the user automatically discriminates the type of data to be recorded without worrying about the type of data to be recorded, it is effective for beginners.
[0101]
At this time, as the signal quality parameter indicating the reproduction signal quality, in the case of computer data, attention should be paid to the C1 error value. FIG. 6A is a diagram showing the relationship between the C1 error value and the β value when data is recorded on the optical disc. Since the relationship between C1 error and β is a quadratic curve, the printing apparatus parameters are set so that the C1 error value becomes the bottom value of this quadratic curve. On the other hand, in the case of music data, attention should be paid to the jitter value. FIG. 6B shows the relationship between jitter and β. The recording apparatus parameters are set so that the jitter value is at the bottom of this quadratic curve.
[0102]
In the case of music data, attention may be paid to the HF modulation degree (I3 / I11), and a point where the value of the HF modulation degree becomes large may be aimed. At this time, the apparatus recording parameter may be adjusted so that the length of a short pit (particularly 3T) is increased by adjusting the write strategy.
[0103]
However, depending on the user, for example, when recording music data on an optical disc, there is a case where emphasis is placed on reliably recording data on an optical disc without error, regardless of sound quality. Therefore, in such a case, the data to be recorded on the optical disc is music data, but the signal quality parameter relating to the reproduction signal quality may be set suitable for computer data. Therefore, the user can select a signal quality parameter pattern (audio pattern, computer data pattern, etc.) regarding the playback signal quality according to the data.
[0104]
FIG. 7 is a setting example of a signal quality parameter representing the reproduction signal quality corresponding to the type of data. In consideration of the above parameters, as shown in FIG. 7, a signal quality parameter indicating a reproduction signal quality such as a β value may be displayed according to the type of data, the type of optical disk, and the like. Further, device recording parameters such as a write strategy may be displayed.
[0105]
  FIG.Operation of optical disk recording deviceIt is an example of the flowchart for demonstrating. It is assumed that data to be recorded on the optical disc is stored in the data storage circuit 25 in advance. First, the user sets a recording optical disc in the optical disc recording apparatus 1 (s51). The system control unit 16 outputs predetermined signals to the servo circuit 13, the laser power control circuit 20, and the encoder 17 in order to determine the type of the set recording optical disk. With these signals, laser light is irradiated from the optical pickup 10 onto the recording optical disk, and the return light is received by the light receiving element of the optical pickup 10, converted into an electrical signal, and output to the RF amplifier 12. The signal amplified by the RF amplifier 12 is output to the address detection circuit 14, and ATIP information (address information) is detected by the address detection circuit 14 and output to the system control unit 16 (s 52).
[0106]
  Subsequently, by operating the changeover switch of the operation unit 27, it is selected whether the apparatus automatically sets the signal quality parameter pattern related to the reproduction signal quality according to the data to be recorded or the user sets ( s53). When the apparatus automatically sets parameters, the system control unit 16dataFrom the data type stored in the storage circuit 25 and the disk type, a signal quality parameter relating to the playback signal quality in the storage unit 26 is called. (S54). The system control unit 16 automatically sets the parameter value based on the selected parameter value. Alternatively, the signal quality parameter relating to the reproduction signal quality and the device recording parameter in the storage unit 26 are called and automatically set (s55). Subsequently, predetermined signals are output to the servo circuit 13, the laser power control circuit 20, and the encoder 17 in order to perform OPC. With these signals, a laser beam is irradiated from the optical pickup 10 onto the recording optical disk, and test recording is performed. The portion is reproduced, and the return light is received by the light receiving element of the optical pickup 10, converted into an electric signal, and output to the RF amplifier 12 (s56). The amplified signal is output from the RF amplifier 12.RegenerationThe signal is output to the signal quality detection circuit unit 24. Signal quality 6 isRegenerationThe optimum laser power is set based on the signal output from the signal quality detection circuit unit 24 (s57). Then, the system control unit 16 causes the data storage circuit 25 to output data to be recorded on the recording optical disk. This data is irradiated as laser light from the optical pickup 10 via the encoder 17, the strategy circuit 18, and the laser driver 19, and the data is recorded on the optical disk (s58). When the data recording is completed, the optical disc recording apparatus 1 displays on the display unit 28 that the data recording is completed, and ends the processing (s59).
[0107]
On the other hand, when setting by the user, the setting of the signal quality parameter relating to the reproduction signal quality suitable for each data type is converted into a table and displayed on the display unit 28. At this time, the apparatus recording parameter may be displayed. By operating the operation unit 27, it is selected whether to perform recording with setting of a signal quality parameter representing a reproduction signal quality suitable for which data type (s60). Based on this selection, the system control unit 16 sets a device recording parameter indicating signal quality (s61), and executes the processing after s56.
[0108]
  next,Optical disk recording deviceThen, data recording is performed by setting apparatus recording parameters related to the reproduction signal quality so that the signal quality at the time of reproduction fluctuates, that is, changes and fluctuations occur.
[0109]
This will be described in detail below. In order to cause a change or fluctuation (variation) in the signal quality during reproduction, for example, the signal quality may be changed at a constant frequency. Further, recording may be performed so that the signal quality changes at a random frequency. Furthermore, the center frequency may be set so that the signal quality changes irregularly.
[0110]
In order to cause a change or fluctuation in the signal quality during reproduction, for example, it is preferable to change the recording power. Further, the write strategy may be changed. Further, the focus balance may be changed.
[0111]
However, when the signal quality is changed or fluctuated during reproduction by the above method, fluctuation components that are not desired to be placed on the signal may actually be loaded due to wobble, disk eccentricity, disk surface fluctuation, or the like. Therefore, by changing the apparatus recording parameter by the following method, it is possible to put the original fluctuation while canceling the fluctuation component which is not desired to be put.
[0112]
That is, the parameter for canceling the fluctuation component is set so that the fluctuation component that is not desired to be placed can be canceled. FIG. 9 is a graph showing waveforms of fluctuation components and parameters for canceling the fluctuation components. As shown in FIG. 9, by setting the recording power as an apparatus recording parameter so as to correspond to the absolute value of the frequency of disk eccentricity, fluctuations caused by disk eccentricity can be canceled out.
[0113]
Further, by placing an arbitrary frequency as a base frequency on the signal, a fluctuation component having a desired frequency can be added to the recording data. For example, a frequency (about 10 Hz) of an α wave component which is a kind of human brain wave is preferable. That is, human brain waves include α waves, β waves, γ waves, and the like, and it is known that humans are in a relaxed state when the α wave component increases. In addition, when listening to music that fluctuates at the frequency of the α wave component (about 10 Hz), it is said that the α wave component of the brain wave increases in synchronization with this frequency. Therefore, by placing fluctuations of the frequency of the α wave component (about 10 Hz) on the music data recorded on the optical disc, an effect that a person who listens to the reproduced music data can relax can be expected.
[0114]
In this way, when the data to be recorded is music data, a new audibility or a mental effect can be generated by causing a change or fluctuation in the reproduction signal quality during reproduction.
[0115]
  next,lightThe operation of the disk recording apparatus will be described using a flowchart. FIG.The operation of the optical disk recording deviceIt is a flowchart for demonstrating. It is assumed that data to be recorded on the optical disc is stored in the data storage circuit 25 in advance. In addition, the setting of the frequency component to be placed on the recording data is stored in the storage unit 26. First, the user operates the switch of the operation unit 27 to set the type of frequency component to be placed on the data to be recorded (s71). Subsequently, the user sets a recording optical disc in the optical disc recording apparatus 1 (s72). The system control unit 16 reads the frequency component pattern from the storage unit 26 and reads data to be recorded on the optical disc from the data storage circuit 25 according to the set frequency component type (s73). Then, apparatus recording parameters are set so that the reproduction signal quality of this data varies with the set frequency component (s74). Subsequently, the system control unit 16 outputs predetermined signals to the servo circuit 13, the laser power control circuit 20, the encoder 17, and the strategy circuit 18, respectively, and controls the optical pickup 10 to irradiate the optical disc with laser light. The data is recorded (s75). When the data recording is completed, the system control unit 16 displays the fact on the display unit 28 (s76) and ends the process.
[0116]
  next,Optical disk recording deviceThen, data recording is automatically performed at an optimum recording speed in accordance with the reproduction signal quality of the optical disk and the data to be recorded. Details will be described below.
[0117]
As described above, conventionally, when data is recorded on an optical disc by mistake, if an attempt is made to record data at a recording speed that is not supported by the optical disc, the optical disc recording device automatically performs the recording according to the optical disc. There was a function that resets the maximum recordable speed. However, when data is recorded using this function, the reproduction signal quality is not always the best. Of course, even when music data was recorded, the best sound quality was not always achieved.
[0118]
  Therefore,Optical disk recording deviceThen, by recording data at an optimum recording speed according to the optical disc, for example, when recording music data on the optical disc, good sound quality can be obtained. Furthermore, the recording may be performed at an optimum recording speed according to the type of data to be recorded.
[0119]
The optimum recording speed corresponding to the type of the optical disc and the data to be recorded is stored in the storage unit 26 in advance, and when the data is recorded on the optical disc, the type of the optical disc and the type of data to be recorded are identified. In addition, information on the optimum recording speed corresponding to the identification result may be read from the storage unit 26.
[0120]
  next,lightA specific operation of the disk recording apparatus will be described. FIG.Operation of optical disk recording deviceIt is an example of the flowchart for demonstrating.
[0121]
It is assumed that data to be recorded on the optical disc is stored in the data storage circuit 25 in advance. First, the user sets a recording optical disk (s81). The servo control is automatically adjusted, and the system control unit 16 reads the ATIP information of the recording optical disc and identifies the type of the recording optical disc (s82). Then, the system control unit 16 reads information on the optimum recording speed of the optical disc and the data to be recorded from the storage unit 26, and automatically sets the optimum recording speed according to the type of the recording optical disc and the type of data to be recorded. To select (s83). Then, data is recorded on the recording optical disk at the selected recording speed (s84). When the data recording is completed, the system control unit 16 displays the fact on the display unit 28 (s85) and ends the process.
[0122]
  next,Optical disk recording deviceThen, before recording the data, the reproduction signal quality of the data and the estimated reproduction signal quality when the data is recorded on the recording optical disk for copying the data are presented to the user. Details will be described below.
[0123]
When recording data on an optical disc, a user may want to know what kind of reproduction signal quality is obtained when data is recorded on a copy destination optical disc. In such a case, if it is possible to know information such as the estimated reproduction signal quality of data to be recorded without purchasing an optical disc (media), it is possible to reduce the labor and cost of the user.
[0124]
  Therefore,lightIn the disk recording apparatus, the storage unit 26 stores in advance the signal quality parameters related to the reproduction signal quality of the optical disk, the device storage parameters, and the relationship between the parameters, which are obtained in advance through experiments or the like. When the data is stored in the optical disc, the signal quality parameter related to the reproduction signal quality stored in the storage unit 26 is displayed on the display unit 28, and the signal quality related to the reproduction signal quality displayed on the display unit 28 by the user is displayed. The parameter or the parameter value can be selected by the operation unit 27. When the user operates the operation unit 27 to select a signal quality parameter or parameter value, the system control unit 16 sets the setting result and the value of the device recording parameter stored in the storage unit 26, and the servo circuit 13. Then, predetermined signals are output to the laser power control circuit 20, the encoder 17, and the strategy circuit 18, and laser light is emitted from the optical pickup 10, and data is recorded on the recording optical disk set in the spindle motor.
[0125]
As described above, by providing information on the estimated reproduction signal quality of recorded data, the user can grasp the estimated reproduction signal quality of data recorded on the optical disc in advance. Therefore, in order to select a medium that can record data with good sound quality and perform recording of data again with another medium when it has been found that the playback signal quality is poor after recording. There is no need to purchase That is, it is very useful for the user.
[0126]
FIG. 12 is an example of the estimated reproduction signal quality of the optical disk displayed on the display unit of the optical disk recording apparatus. Further, the estimated reproduction signal quality data provided to the user may be displayed in a tabular format, for example, as shown in the table of the estimated reproduction signal quality corresponding to the recording speed shown in FIG. good. Further, the estimated reproduction signal quality may be displayed in a graph format, as in the graph showing the relationship between β and jitter using the recording speed as a parameter shown in FIG.
[0127]
  Also works as aboveLightThe disk recording apparatus 1 can be realized by a computer equipped with an optical disk drive device. That is, the address detection circuit 14 and the system control unit 16 which are identification means for identifying the type of the recording optical disk can be realized by an MPU or a peripheral circuit constituting the computer. Furthermore, the storage unit 26 that is a storage unit that stores the estimated reproduction signal quality when data is recorded on the recording optical disk can be realized by a memory, a RAM, and a ROM constituting a computer. In addition, the display unit 28 which is a display means for displaying the estimated reproduction signal quality of the recording optical disk can be realized by a monitor constituting a computer.
[0128]
Further, as the estimated reproduction signal quality, a confirmation result of the reproduction signal quality of test writing data such as OPC may be used.
[0129]
In addition, a program for operating the above-described units may be stored in the storage unit 26 in advance, and when a user operates the operation unit 27, the program is read and executed.
[0130]
In addition, when a recording optical disk is newly released and it is desired to obtain information about the optical disk, it is preferable to update the firmware via the Internet using a communication means not shown.
[0131]
  next,lightThe disk recording device stores the signal quality parameter of the reproduction signal quality when data was recorded in the past in the storage unit. When data is recorded on the optical disc, the user can call the past data and record the data.
[0132]
Details will be described below. For example, if the user has adjusted the music data in the past and recorded the music data on the optical disc a, the music data could be recorded with very good sound quality. If the user wants to record the music data on the optical disc a with the same settings, That is, there is a case where it is desired to change the copy source disk depending on the data to be recorded and the reproduction signal quality. Further, there are cases where it is desired to perform a condition search when the value of the reproduction signal quality is a certain value and set a signal quality parameter related to the reproduction signal quality based on the search result. In such a case, if the information of the signal quality parameter related to the reproduction signal quality when data was recorded on the optical disk in the past can be known, the user can easily set the signal quality parameter related to the reproduction signal quality and transfer it to the data optical disk. Can be recorded.
[0133]
  Therefore,lightIn the disk recording apparatus, the signal quality parameter related to the reproduction signal quality set in the past when data is recorded on the optical disk is stored in the storage unit 26. When the data is stored in another optical disk, the signal quality parameter related to the reproduction signal quality stored in the storage unit 26 is displayed on the display unit 28, and the signal quality related to the reproduction signal quality displayed on the display unit 28 by the user. The parameter can be selected by the operation unit 27. When the user operates the operation unit 27 to select a parameter, the system control unit 16 sets the value of the signal quality parameter relating to the reproduction signal quality stored in the storage unit 26 to set the servo circuit 13 and the laser power control circuit 20. Then, predetermined signals are output to the encoder 17 and the strategy circuit 18, and laser light is emitted from the optical pickup 10, and data is recorded on the recording optical disk set in the spindle motor.
[0134]
  As mentioned above, by providing signal quality parameter information related to playback signal quality recorded in the past, if this function is not available, make a note of how the signal quality parameter related to playback signal quality was set. It is necessary to review the memo when recording data with the setting again., ThatThere is no need to perform such troublesome work.
[0135]
In the case where the signal quality parameter setting relating to the reproduction signal quality is stored in the optical disc recording apparatus, an indication as to whether or not to leave this setting is displayed on the display unit of the apparatus after the data recording is completed. In accordance with the instruction, the user may input notes, for example, by operating the operation unit. Further, when calling the setting of the signal quality parameter related to the reproduction signal quality stored in the optical disk recording apparatus, the desired setting may be called by operating the operation unit before recording data on the optical disk.
[0136]
  Also works as aboveLightThe disk recording apparatus 1 can be realized by a computer equipped with an optical disk drive device. That is, the storage unit 26 that is a storage unit that stores a signal quality parameter related to the playback signal quality set when data is recorded on the optical disc can be realized by a memory, a RAM, and a ROM that constitute a computer. In addition, the display unit 28 that is a display unit that displays the signal quality parameter related to the reproduction signal quality stored in the storage unit 26 can be realized by a monitor that constitutes a computer. The operation unit 27 that is an operation means for selecting a signal quality parameter related to the reproduction signal quality displayed on the display unit 28 can be realized by a keyboard or a mouse. The system control unit 16 which is a reproduction signal quality adjusting means for setting a signal quality parameter related to reproduction signal quality at the time of data recording to a value stored in the storage unit 26 can be realized by an MPU or a peripheral circuit constituting the computer.
[0137]
In addition, a program for operating the above-described units may be stored in the storage unit 26 in advance, and when a user operates the operation unit 27, the program is read and executed.
[0138]
  In addition, the aboveExplanationThe setting data may be set for each type of optical disk (for each medium) and for each recording speed.
[0139]
Further, the present invention is not limited to the CLV method and the CAV method, but can be applied to a partial CAV method and other recording methods.
[0140]
【The invention's effect】
  According to the present invention, music data can be reproduced with substantially the same sound quality as that of a copy source optical disk without causing the problem that the reproduced sound quality is different due to the different reproduction signal quality as in the prior art.The
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration of an optical disc recording apparatus according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view showing an area configuration of an optical disc.
FIG. 3 shows the present invention.The fruitIt is a flowchart for demonstrating embodiment.
FIG. 4 is a display example for setting signal quality parameters related to playback signal quality displayed on the display unit;
[Figure 5]Operation of optical disk recording deviceIt is an example of the flowchart for demonstrating.
FIG. 6 is a diagram showing a relationship between C1 error and β and a relationship between jitter and β when data is recorded on an optical disc.
FIG. 7 is an example of setting parameters according to the type of data.
[Fig. 8]Operation of optical disk recording deviceIt is an example of the flowchart for demonstrating.
FIG. 9 is a graph showing waveforms of fluctuation components and parameters for canceling the fluctuation components.
FIG. 10The operation of the optical disk recording deviceIt is a flowchart for demonstrating.
FIG. 11Operation of optical disk recording deviceIt is an example of the flowchart for demonstrating.
FIG. 12 is an example of the reproduction signal quality of the optical disk displayed on the display unit of the optical disk recording apparatus.
[Explanation of symbols]
1-Optical disk recording device
10-optical pickup
16-System controller
20-Laser power control circuit
24-Reproduction signal quality detection circuit section
25-data storage circuit
26-Storage unit
27-Operation part
28-Display section

Claims (5)

The reproduction signal quality of the data recorded on the copy source optical disk was measured, based on the relationship between the playback signal quality and apparatus recording parameter, the measured value of the device recording parameter corresponding to the value of the reproduced signal quality set, optical disk recording method characterized by recording on the basis of the data recorded on the copy source optical disk to the value of the recording light Disukuhe set apparatus recording parameter. Store in advance the relationship between the reproduction signal quality of the data recorded on the optical disc and the device recording parameters related to the reproduction signal quality,
The reproduction signal quality of the data recorded on the copy source optical disk was measured, and the reproduced signal quality, based on said relationship of the reproduction signal quality and apparatus recording parameter, corresponding to the value of the measured reproduced signal quality optical disc recording method characterized by device value of the recording parameter is set and recorded on the basis of the data recorded on the copy source optical disk to the value of the recording light Disukuhe set device recorded parameters. Measure the playback signal quality of the data recorded on the copy source optical disc,
Perform test writing on the recording optical disc, and obtain in advance the relationship between the playback signal quality and the device recording parameters related to the playback signal quality from the playback signal quality of the data trial-written on the recording optical disc,
Based on the relationship with apparatus recording parameters relating to the prior SL reproduced signal quality and reproduction signal quality, and setting the measured value of the device recording parameter corresponding to the value of the reproduction signal quality is recorded in the copy source optical disk optical disc recording method characterized by recording on the basis of the data in the recording light Disukuhe set value of the device recorded parameters. Storage means for storing the relationship between the reproduction signal quality of the data recorded on the optical disc and the device recording parameters related to the reproduction signal quality;
Signal quality measuring means for measuring the reproduction signal quality of the data recorded on the copy source optical disc;
Based on the relationship between the reproduction signal quality and apparatus recording parameter, a reproduced signal quality adjusting means for setting the value of the device recording parameter corresponding to the value of the copy source of the reproduced signal quality,
Optical disk recording apparatus characterized by comprising a data recording means for recording based on the value of the copy source device parameters recorded optical Disukuhe the adjustment data recorded on the optical disc. Signal quality measuring means for measuring the reproduction signal quality of the data recorded on the copy source optical disc;
Trial writing to the optical disc for recording, trial writing means for obtaining a relationship between the reproduction signal quality of the data written by trial writing and the reproduction signal quality and the apparatus recording parameter related to the reproduction signal quality ;
Before Symbol reproduced signal quality and apparatus recording parameter and the related Ru set Teisu the value of the apparatus recording parameter corresponding to the value of the copy source of the reproduced signal quality based on the engagement reproduced signal quality adjusting means,
Optical disk recording apparatus characterized by comprising a data recording means for recording based on the value of the copy source device parameters recorded optical Disukuhe the adjustment data recorded on the optical disc.

Images