JP4021265B2 - Optical disk high-speed playback recording device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an optical disc high-speed playback recording apparatus that reads data recorded by playing back an optical disc at a speed greater than its standard playback speed and records the data on a writable / rewritable optical disc.
[0002]
[Prior art]
In recent years, an optical disk high-speed playback recording device has been developed that records data recorded on multiple types of optical disks represented by CDs and DVDs at a speed higher than the original playback speed, and simultaneously records the data on another rewritable / rewritable optical disk. Has been.
As a representative example of such an optical disk high-speed playback recording apparatus, the operation will be briefly described by taking a CD as the recording source optical disk and an MD as the writable / rewritable optical disk as an example. A CD on which data for music or non-music is recorded is rotated at a speed higher than the standard playback speed, and the recorded data is read out in units smaller than the track, and is recorded every predetermined recording unit (for example, smaller than reading unit / track). Each data block or each CD) is written to the MD.
[0003]
Note that the management information related to the write data is written in the UTOC (User Table of Content) area of the MD, and the recording of the data reproduced from the CD onto the MD is completed. The management information written in this UTOC area is called UTOC information. The UTOC area and the UTOC information can be written / rewritten by the user in accordance with the data writing. On the other hand, it is well known that a TOC (Table of Content) area and TOC information provided on a read-only optical disc such as a CD cannot be arbitrarily written or rewritten by the user.
[0004]
In an optical disk high-speed playback recording apparatus, data is read by rotating a recording source optical disk (CD) at a speed several times the normal playback speed. Depending on factors such as mounting accuracy, circuit noise, and other factors that impede data reproduction, and combinations of these factors, recorded data may not be read correctly from the CD, and as a result, data may not be recorded correctly on the MD. In such a case, no matter how much the user desires high-speed playback recording, in order to record on a writable / rewritable optical disc, it is necessary to reduce the playback speed until the data can be read correctly from the CD.
[0005]
In other words, among the reading hindrance factors, the physical defect of the medium itself, such as a CD scratch or deformation, is not affected by the reproduction speed itself. However, the lower the CD rotation speed, that is, the reproduction speed, the smaller the degree of obstruction related to optical readout by the optical pickup, thereby improving data readout. Also, the positional accuracy itself, which is the mounting accuracy of the CD with respect to the CD drive, is not affected by the reproduction speed itself. However, if the rotational speed of the CD is reduced, the degree of change in the positional relationship between the optical pickup and the pit due to the positional accuracy error is reduced, and the optical readout is improved. Furthermore, the electrical inhibition factor itself such as circuit noise is basically not affected by the rotational speed of the CD, but is also affected by the reproduction speed as electrical processing. That is, if the reproduction speed is reduced, the influence of noise is reduced, and data reproduction is improved.
[0006]
In each of the different data generation inhibiting factors described above, the fact that the recorded data cannot be normally reproduced at the time of high-speed reproduction is a direct cause of the failure of normal recording on the MD. For this reason, in the optical disk high-speed playback recording apparatus, regardless of the cause of the data playback failure, the rotational speed of the CD, that is, the playback speed is reduced, and the normal playback of the recorded data is recovered and recorded on the MD. It is structured.
[0007]
The CD described as an example of the above-mentioned recording source optical disc is rotationally controlled so that the linear velocity called CLV (Constant Linear Velocity) control is constant. That is, the reading position is rotated at a higher speed on the inner peripheral side than on the outer peripheral side. Depending on the type of optical disk other than the CD, there is a rotation control method of CAV (Constant Angular Velocity), ZCAV (Zone Constant Angular Velocity), and ZCLV (Zone Constant Linear Velocity). Therefore, the reproduction speed is not fixedly related to the rotation speed of the optical disk, and the optical disk is rotated at a different speed depending on the read / reproduction position of the optical disk even at the same reproduction speed. However, in any of the control methods, when reading is impossible in the optical disk high-speed playback / recording apparatus, the playback speed (rotation speed) is lowered and the improvement in reading the recorded data is the same.
[0008]
[Problems to be solved by the invention]
As described above, in the optical disk high-speed playback / recording apparatus, even if the playback speed is the same, the rotational speed of the optical disk varies depending on the read / playback position. It depends on. In other words, when there is a playback obstruction factor of a uniform size in the radial direction of the optical disc, when trying to perform high-speed playback recording at a constant playback speed, playback can be performed safely on the outer peripheral side (inner peripheral side). May not be played back on the inner circumference (outer circumference). Further, in practice, the magnitude of the reproduction hindrance factor is not constant, and there are various locations. Therefore, sudden reproduction becomes impossible or sudden reproduction becomes possible during high-speed reproduction recording.
However, in the above-described optical disk high-speed playback / recording apparatus, each time recording data is read from the CD and reproduced, the data is actually recorded sequentially on the MD, and UTOC information is written in units of tracks or CDs. Determine. Therefore, if a reproduction failure occurs during recording of data on the MD, the defective data is recorded on the MD at least in track units or CD units depending on the writing timing of the UTOC information. In such an MD, depending on the type or location of the recorded defective data, there is a problem that the data read from the CD and recorded on the MD cannot be read from the MD in track units or CD units.
[0009]
Therefore, the present invention reads and reproduces data recorded on an optical disc at a speed larger than its standard reproduction speed, and can write / rewrite the reproduced data except for defective data due to reproduction failure. It is an object of the present invention to provide an optical disk high-speed playback recording apparatus that records information on a disk.
[0010]
[Means for Solving the Problems and Effects of the Invention]
  The first invention is digital data.IsA second playback speed larger than the first playback speed, which is the standard playback speed, of the recorded first optical discRead onWrite to a writable second optical disc,Read outAn optical disk high-speed playback recording apparatus for recording digital data on the second optical disk,
  Read outDeA bit shift detection unit for detecting a bit shift of digital data;
  Read outWhen a bit shift is detected in the digital data, a third reproduction speed that is smaller than the second reproduction speed by a first predetermined speed.DeDigital dataReRe-reading unitThe
[0011]
As described above, in the first invention, when a bit shift occurs in the reproduction data, it is possible to eliminate the occurrence of defective reproduction data due to high-speed reproduction by reducing the reproduction speed and reproducing again.
[0012]
  In a second aspect based on the first aspect, the bit shift detector is
      Read outDeA playback unit for playing back content components and subcode components from digital data;
      A serial information generation unit that serially arranges the reproduced content component and subcode component to generate serial information;
      A CRC check unit for generating a CRC error signal by performing a CRC check on the subcode component of the serial information;
      A bit shift determination unit that determines a bit shift when a CRC error exists for a predetermined time or more based on the CRC error signal.
[0013]
  According to a third invention, in the first invention, the reading is further performed.DeA quality judgment unit for judging the reproduction quality of the digital data,
  The reread unitRead outIf the digital data is determined to be of poor quality, a third playback speed that is smaller than the second playback speed by a first predetermined speed.DeDigital dataReIt is characterized in that it is read out every time.
[0014]
As described above, in the third invention, when defective reproduction data is generated, the reproduction speed is further reduced to reproduce the defective reproduction data caused by high-speed reproduction more effectively. it can.
[0015]
  In a fourth aspect based on the third aspect, the quality determination unit
      Read outDeA playback unit for playing back content components and subcode components from digital data;
      A buffering unit for temporarily storing the reproduced content component and subcode component;
    An underrun detection unit that determines that the quality is poor if the amount of the content component and the subcode component stored in the buffering unit is a predetermined amount or less.
[0016]
  In a fifth aspect based on the first aspect, the data is read again.DeWhen a bit shift is detected in the digital data, a fourth reproduction speed that is smaller than the third reproduction speed by a second predetermined speed.DeDigital dataReAnd a second rereading unit that reads the data every time.
[0017]
According to a sixth aspect, in the fifth aspect, the first predetermined speed and the second predetermined speed are the same.
[0018]
According to a seventh aspect, in the first aspect, the first predetermined speed is an arbitrary value determined so that the third reproduction speed does not become lower than the first reproduction speed.
[0019]
In an eighth aspect based on the fifth aspect, the second predetermined speed is an arbitrary value determined so that the fourth reproduction speed does not become lower than the first reproduction speed.
[0021]
  First9In the first invention,Read outWhen digital data is written to the second optical disc,ConcernedDigital data management information is written in a recording data management information storage area of the second optical disc.
[0022]
  First10The invention of the9In the invention, the second optical disk is MD (R), the recording data management information storage area is a UTOC area, and the management information is UTOC information.
[0023]
  First11According to the present invention, in the first invention, the first optical disk is a CD (R).
[0024]
DETAILED DESCRIPTION OF THE INVENTION
  Hereinafter, an optical disk high-speed playback device according to an embodiment of the present invention will be described with reference to FIG. 1 and FIG. As shown in FIG. 1, the optical disk high-speed playback recording apparatus HSC roughly includes a combination drive 130, a read data detector 200, an MD drive 230, an operation controller 300, and a display unit 400. The optical disc high-speed playback recording apparatus HSC includes a combination drive 130 and an MD drive 2.3Also included is a read signal processing unit that performs various processes on the signal read from 0 to generate an audio signal, video, or computer data and output it to a speaker, monitor, or other recording device. Since it is not a feature, illustration and description are omitted.
[0025]
  The display unit 400 is preferably composed of light emitting means such as a fluorescent display tube, and optically presents information such as the operation mode of the optical disk high-speed playback recording apparatus HSC to the user. The operation controller 300 includes a combination drive 130, an MD drive 230, connected to the above-described read signal processing unit (not shown) and the display unit 400 to control the overall operation of the optical disc high-speed playback recording apparatus HSC.
[0026]
The combination drive 130 includes at least one optical disk drive 132, a drive system controller 134, a reproduction speed switch 136, and an optical disk controller (shown as “ODC” in FIG. 1) 138. The optical disk drive 132 is loaded with a different optical disk medium, reads the recording data from the optical medium, and outputs it to the optical disk controller 138. The optical disk drive 132 includes means for detecting the type of optical disk to be loaded, and is recognized as a different optical disk drive for each type of detected optical disk. Therefore, in this specification, for convenience of explanation, each of them will be described as different drives. That is, the optical disk drive 132 includes an optical disk reproducing device represented by a CD drive 132_1, a DVD drive 132_2, a VCD drive 132_3, an MP3 drive 132_4, and the like.
[0027]
The CD drive 132_1 reads out digital data such as music data or a computer program from the loaded CD and outputs it as CD data Scd. The DVD drive 132_2 reproduces and outputs the MPEG data Sdv from the DVD. The VCD drive 132_3 reproduces an audio signal from the video CD and outputs it as a video CD audio signal Svd. The MP3 drive 132_4 reproduces audio data from the MP3 file recorded on the optical disc and outputs it as an MP3 audio signal Smp. The drive system controller 134 is connected to the optical disk drive 132, exchanges the combination drive control signal SCc with each other, controls the operation of the optical disk drive 132, and detects the type of the optical disk loaded in the optical disk drive 132.
[0028]
The MD drive 230 includes an MD system controller 230_1 and a writing / reading unit 230_3. The MD drive 230 further includes drive means for rotating the MD and related members, but these are not the features of the present invention and will not be described. The MD drive 230 writes the serial information Isr generated based on the CD data Scd read from the CD input from the combination drive 130 by the read data detector 200 into the MD or the data written in the MD. read out.
[0029]
The MD system controller 230_1 performs CRC check on the subcode information of the serial information Isr input from the read data detector 200 via the write / reader 230_3, and detects the presence or absence of a bit shift in the serial information Isr. Then, a CRC error signal Scrr is generated. The generated CRC error signal Scrr is output to the operation controller 300. Further, the MD drive 230_1 controls writing / reading of the writer / reader 230_3 with respect to the rewritable optical disc 230_5 based on the MD drive state signal SMm and the combination drive state signal SMc input from the operation controller 300.
[0030]
The operation controller 300 preferably includes a light receiver 320 and a remote controller 330. The user can operate the remote controller 330 to give an instruction to the optical disc high-speed playback recording apparatus HSC. That is, the remote controller 330 emits the remote control signal SR in accordance with a user operation. The light receiver 320 receives the remote control signal SR emitted from the remote controller 330 and outputs a user instruction signal SU reflecting the user's operation intention to the operation controller 300.
[0031]
The operation controller 300 controls the operation of the combination drive 130 based on the user instruction signal SU input from the light receiver 320, the MD drive status signal SMm and the CRC error signal Scrr input from the MD drive 230. A drive control signal SOc is generated and output to the drive system controller 134. The drive system controller 134 generates a combination drive control signal SCc based on the combination drive control signal SOc, and controls the optical disc drive 132. On the other hand, the drive system controller 134 generates a combination drive status signal SMc including media identification information indicating the type of the optical disc loaded in the optical disc drive 132 and the operation status information of the combination drive 130 and outputs it to the operation controller 300.
[0032]
The operation controller 300 generates an MD control signal SCm for controlling the operation of the MD drive 230 based on the user instruction signal SU, the combination drive state signal SMc, the reproduction state signal Sjr, the CRC error signal Scrr, and the MD drive state signal SMm. And output to the MD drive 230.
[0033]
Also in this embodiment, the optical disk high-speed playback recording apparatus HSC preferably uses a CD as a recording source optical disk and an MD as a writable / rewritable optical disk. Therefore, the drive system controller 134 generates a rotation speed instruction signal Srn indicating a rotation speed corresponding to the reproduction speed instructed by the combination drive control signal SCc input from the operation controller 300, and outputs the rotation speed instruction signal Srn to the reproduction speed switch 136. To do. Note that the drive system controller 134 generates a rotation speed instruction signal Srn so as to rotate at a reproduction speed designated by the user according to the type of rotation control method (ZCAV, ZCLV, CAV, etc.) of the target optical disk.
[0034]
The reproduction speed switch 136 rotates the CD drive 132_1 at a speed corresponding to the reproduction speed designated by the user based on the rotation speed instruction signal Srn. That is, in the case of a CD, the rotation speed is changed with respect to the position in the radial direction so that the linear speed at the reading position, which is the data reading speed, becomes the user-specified playback speed for CLV control. The playback speed switch 136 generates a read speed signal Srs indicating the speed at which data is read from the CD, and outputs the read speed signal Srs to the optical disk controller 138.
[0035]
The optical disk controller 138 extracts the audio data (or computer content data) Sad and the subcode Ssb from the CD data Scd input from the CD drive 132_1 based on the read speed signal Srs, and outputs the audio data (or computer content data) Ssb to the read data detector 200. . The data output from the optical disc controller 138 differs depending on the type of the optical disc of the recording source, but basically the content data corresponding to the audio data Sad in the case of a CD and the management corresponding to the sub code Ssb. Data is output. In this sense, the audio data Sad and the subcode Ssb extracted from the CD data Scd are referred to as content data Sad and content management data Ssb, respectively, as necessary.
[0036]
Based on the content data Sad and the content management data Ssb, the read data detector 200 generates a reproduction state signal Sjr indicating whether or not data reading / reproduction from the CD is normal, and sends it to the operation controller 300. Output. Further, the read data detector 200 generates the serial information Isr by alternately and alternately arranging the content data Sad and the subcode Ssb, and outputs the serial information Isr to the write / read device 230_3 of the MD drive 230.
[0037]
Specifically, the read data detector 200 includes a gate array and a mixer. A reproduction state signal Sjr is generated based on the amount of content data Sad and subcode Ssb stored in a buffer provided inside the gate array. Then, the content data Sad and the subcode Ssb are serially (continuously alternated) arranged by the mixer to generate serial information Isr. In the serial information Isr, the content data Sad and the subcode Ssb that is management information of the content data Sad are inseparable in the arrangement.
[0038]
The CRC error signal Scrr is a signal indicating a CRC check result of the subcode Ssb in the serial information Isr. This is because, in the optical disk high-speed playback recording apparatus HSC, when noise due to hardware occurs for some reason during playback of the recording source optical disk, the noise may be mixed in the serial information Isr. If noise is mixed, the arrangement of the content data Sad and the subcode Ssb that are inherently inseparable is destroyed. That is, in order to manage a certain content data Sad, a “bit shift” occurs in which a subcode Ssb that must be continuously arranged in the content data Sad is continuously arranged in another content data Sad. . In general, noise that causes this bit shift has a characteristic that it is more likely to occur as the reproduction speed increases.
[0039]
In the bit shift state, a part of the subcode Ssb (or the content data Sad in the subcode Ssb part) is mixed in the content data Sad part in the serial information Isr. As a result, the MD system controller 230_1 cannot correctly record the content data Sad on the rewritable optical disc 230_5. In other words, it can be said that the recorded data cannot be normally reproduced from the recording source optical disk in the sense that it cannot be normally recorded on the rewritable optical disk 230_5. That is, the CD data Scd necessary for generating the serial information Isr is defective in reproduction. From the viewpoint that the serial information Isr is data to be recorded on the rewritable optical disc 230_5, it can be said that the generation of the serial information Isr is defective.
[0040]
Since the bit shift of the serial information Isr is permanent once it occurs, the recording of the serial information Isr on the rewritable optical disc 230_5 should not be continued.
[0041]
In order to monitor such a situation, the MD system controller 230_1 generates a CRC error signal Scrc by performing a CRC check on the subcode Ssb of the serial information Isr input from the read data detector 200. That is, if the error continues for a predetermined time or more as a result of the CRC check, it is determined that the bit shift of the serial information Isr has occurred and the current playback speed at which a large noise is generated is too high for the recording source optical disc. Is done. That is, it is configured as means for detecting a bit shift of the serial information Isr with the value of the CRC error signal Scrr. In other words, in the present invention, a bit error in the serial information Isr is detected by detecting a data abnormality due to continuous mixing of the content data Sad component in the subcode Ssb portion as an error by CRC check.
[0042]
Based on the user instruction signal SU, the operation controller 300 further reproduces the CD loaded in the CD drive 132_1 at N times the normal reproduction speed (N is an arbitrary positive integer) and reproduces the reproduced data. It records on MD (rewritable optical disk 230_5). The operation controller 300 also displays an operation state display signal representing the operation state of the optical disc high-speed playback recording apparatus HSC based on the user instruction signal SU, the combination drive state signal SMc, the CRC error signal Scrr, and the MD drive state signal SMm. SOd is generated and output to the display unit 400. The display unit 400 presents the operation state of the optical disk high-speed playback recording device HSC to the user using an optical display based on the operation state display signal SOd.
[0043]
Next, only the optical disk high-speed playback recording operation by the optical disk high-speed playback recording apparatus HSC will be described with reference to the flowchart shown in FIG. When the optical disk high-speed playback recording device HSC is turned on and starts its operation,
In step S2, based on the user instruction signal SU, it is determined whether or not the operation controller 300 is instructed to perform high-speed playback recording (N times playback recording) of the optical disk. In the case of No, the process of this step is repeated, and when it is determined Yes, the control proceeds to the next step S4.
[0044]
In step S4, based on the user instruction signal SU, the operation controller 300 determines a recording source optical disk and a recording destination optical disk. As described above, whether or not the recording source optical disk (CD) and the MD (recording destination optical disk) are mounted is automatically detected in the combination drive 130 and the MD drive 230, respectively. Therefore, when the recording source optical disk (CD) or the recording destination optical disk (MD) is not loaded, the user cannot select high-speed playback recording. Therefore, in this step, the recording source optical disk and the recording destination optical disk are always determined. The In this example, CD and MD are determined and recognized as a recording source optical disc and a recording destination optical disc, respectively. Then, the control proceeds to the next Step S6.
[0045]
In step S6, the operation controller 300 detects a high-speed playback multiple N that defines how many times the normal playback speed of the recording source optical disk is to be played based on the user instruction signal SU. That is, in this example, it is determined how many times the normal reproduction speed of the CD is reproduced and recorded on the MD. The high speed reproduction multiple N determined in this step is output to the drive system controller 134 as a combination drive control signal SOc. Then, the control proceeds to the next Step S8.
[0046]
  In step S8, the drive system controller 134 determines the rotation speed of the recording source optical disk based on the high-speed reproduction multiple N, and generates the rotation speed instruction signal Srn.RegenerationOutput to the speed switch 136. The rotational speed (angular speed) defined by the rotational speed instruction signal Srn depends on the type of optical disk and its rotational control method.IsAs described above, the rotational speed is not always constant even at the same reproduction speed.That isNeedless to say, the N-times reproduction speed may be N-times angular velocity or not.Then, control proceeds to the next step S10.
[0047]
In step S10, the reproduction speed switch 136 is N times as fast as the normal reproduction of the recording source optical disk (CD) mounted in the optical disk drive 132 (CD drive 132_1) based on the rotation speed instruction signal Srn. Rotate with Then, the control proceeds to the next Step S12.
[0048]
In step S12, the playback speed switch 136 detects the reading speed at the reading position of the optical disk (CD) rotated at a playback speed N times that during normal playback, generates a reading speed signal Srs, and controls the optical disk. Output to the device 138. That is, the read speed signal Srs corresponds to the speed at which data is read from the optical disk and input to the optical disk controller 138. Then, the control proceeds to the next Step S14.
[0049]
In step S14, the optical disk controller 138 reads data (read from the optical disk (CD) at the playback speed N times normal playback from the optical disk (CD) by the optical disk drive 132 (CD drive 132_1) based on the read speed signal Srs. The CD data Scd is reproduced at a speed N times that during normal reproduction, the content data (audio data) Sad and the management data (subcode) Ssb are extracted and output to the read data detector 200. Control is then performed. Proceed to the next Step S15.
[0050]
In step S15, the read data detector 200 generates a reproduction state signal Sjr indicating the reproduction state based on the content data (audio data) Sad and the management data (subcode) Ssb, and outputs it to the operation controller 300. Then, the control proceeds to the next Step S16.
[0051]
In step S16, the MD system controller 230_1 performs a CRC check on the component of the subcode Ssb of the serial information Isr, generates a CRC error signal Scrr, and outputs the CRC error signal Scrr to the operation controller 300. Then, the control proceeds to the next Step S17.
[0052]
In step S17, the read data detector 200 generates serial information Isr from the content data (audio data) Sad and the management data (subcode) Ssb, and generates a playback state signal Sjr indicating the playback state based on 3. And output to the MD system controller 230_1. Then, the control proceeds to the next Step S18.
[0053]
In step S18, the operation controller 300 determines whether or not the recording data is normally reproduced from the recording source optical disk (CD) based on the reproduction state signal Sjr and the CRC error signal Scrr. That is, based on the playback state signal Sjr, it is determined that normal playback is performed when a predetermined amount of playback data is input to the read data detector 200 within a predetermined time, and it is determined that playback is poor if it is not underrun. Based on the CRC error signal Scrr, if no error is detected for a predetermined period of time (no bit shift has occurred), it is determined as normal reproduction, and a state other than that is determined as reproduction failure. Only when both the reproduction state signal Sjr and the CRC error signal Scrr indicate normal reproduction, it is determined Yes and the control proceeds to step S19. That is, if any one of them indicates a reproduction failure, it is determined No and the control proceeds to step S24.
[0054]
In step S19, the MD drive 230_1 determines whether or not there is enough capacity to write the content data Sad input to the rewritable optical disc 230_5. If the capacity is sufficient, it is determined Yes and control proceeds to step S20.
[0055]
In step S20, the content data Sad input to the MD drive 230 via the read data detector 200 is written to the writable / rewritable optical disc (MD) 230_5 in a predetermined recording unit by the write / reader 230_3. . In the present invention, the recording unit may be a sector unit, a track unit, a recording source or a recording destination optical disk unit, but in the present embodiment, a unit smaller than the sector is preferable. Therefore, the content data Sad sequentially read from the recording source optical disc (CD) is written to the writable / rewritable optical disc 230_5 in a recording unit smaller than the sector. Then, the control proceeds to the next Step S22.
[0056]
In step S22, UTOC information related to the writing of the content data Sad to the writable / rewritable optical disc 230_5 (MD) in step S20 is generated by the MD system controller 230_1 and stored in the UTOC area of the rewritable optical disc 230_5 (MD). Written. Then, the control proceeds to the next Step S23.
[0057]
In step S23, the operation controller 300 determines whether or not the reproduction of the recording source optical disc is completed. If the determination is Yes, the high-speed playback / recording operation of the optical disk high-speed playback / recording apparatus HSC ends.
[0058]
As described above, if No in step S18, that is, if it is determined that playback cannot be performed at N-times speed at the current reading position of the recording source optical disk, the recording source at the current reading position in the allowable maximum playback speed detection process starting from step S24. Processing for obtaining a speed (N−Vp) in which the maximum possible playback speed Nmax of the optical disc is slightly decelerated from the fast playback multiple N is started.
[0059]
In step S24, the operation controller 300 subtracts the deceleration value Vp from the high speed reproduction multiple N to obtain a quasi high speed reproduction multiple K. The deceleration value Vp is a predetermined value that is appropriately determined from the standpoint of recovering the reproduction state by slightly reducing the reproduction speed (rotational speed) of the reproduction failure occurring in the optical disk high-speed reproduction recording apparatus HSC. However, the deceleration value Vp is preferably equal to or less than the high speed reproduction multiple N-1. That is, when the deceleration value Vp is N−1, the quasi-high-speed reproduction multiple K is 1, and the reproduction is recovered by reproducing the recording source optical disc (CD) at the normal reproduction speed. Then, the control proceeds to the next Step S26.
[0060]
In step S26, the operation controller 300 further determines whether or not the quasi-high speed reproduction multiple K is greater than one. If Yes, that is, if the quasi-high-speed reproduction multiple K is greater than 1-times, the quasi-high-speed reproduction multiple K is output to the drive system controller 134 as the combination drive control signal SOc instead of the high-speed reproduction multiple N. The processing in steps S24 and S26 is similar to the processing in step S6 described above. However, in step S6, the high-speed reproduction multiple N is determined according to the user's instruction (user instruction signal SU). However, in order to improve the reproduction failure state in this step, the high-speed reproduction multiple N is a predetermined deceleration. The difference is that the quasi-high speed reproduction multiple K is obtained by decelerating by the value Vp. Then, the control proceeds to the next Step S28.
[0061]
If No in step S26, that is, if the quasi-high speed reproduction multiple K is equal to or less than 1 ×, the process proceeds to step S27.
[0062]
In step S27, the semi-high speed reproduction multiple K is set to 1. This prevents the vehicle from decelerating to 1 × speed or less. However, if it is desired to reproduce at 1 × speed or lower, K> 0 may be determined in step S26, and K = positive value may be set in step S27. Then, the control proceeds to step S28 described above.
[0063]
  In step S28, as in step S8 described above, the drive system controller 134AssociateFast playback multipleKBased on the above, the rotational speed (RPM) of the recording source optical disk is determined and the rotational speed instruction signal Srn is generated,RegenerationOutput to the speed switch 136. For convenience of explanation, the rotational speed instruction signal Srn generated in this step is referred to as a deceleration rotational speed instruction signal Srk for identification.. SoControl then proceeds to the next step S30.
[0064]
In step S30, in the same manner as in step S10 described above, the playback speed switch 136, based on the deceleration rotational speed instruction signal Srk, is the recording source optical disk (CD drive) mounted on the optical disk drive 132 (CD drive 132_1). ) At a speed K times that during normal playback. Then, the control proceeds to the next Step S32.
[0065]
In step S32, as in step S12 described above, the reproduction speed switch 136 detects the reading speed at the reading position of the optical disc (CD) rotated at a speed K times that during normal reproduction, and decelerates. A read speed signal Sks is generated and output to the optical disk controller 138. The deceleration reading speed signal Sks is basically the same as the reading speed signal Srs, but its value is smaller than the reading speed signal Srs. Then, the control proceeds to the next Step S34.
[0066]
In step S34, as in step S34 described above, the optical disk controller 138 uses the optical disk drive 132 (CD drive 132_1) based on the deceleration read speed signal Sks to K times the normal reproduction from the optical disk (CD). The data (CD data Scd) read at a speed of 5 is reproduced at a speed K times that of normal reproduction, the content data (audio data) Sad and the management data (subcode) Ssb are extracted, and the read data Output to the detector 200. Then, the control proceeds to the next Step S35.
[0067]
In step S35, as in step S15 described above, the read data detector 200 generates a playback state signal Sjk indicating the playback state based on the content data (audio data) Sad and the management data (subcode) Ssb. And output to the operation controller 300. Then, the control proceeds to the next Step S36.
[0068]
In step S36, as in step S16 described above, the read data detector 200 generates serial information Isk from the content data (audio data) Sad and the management data (subcode) Ssb, and sends it to the MD system controller 230_1. Output. Then, the control proceeds to the next Step S37.
[0069]
In step S37, as in step S17 described above, the MD system controller 230_1 performs a CRC check on the component of the subcode Ssb of the serial information Isk, generates a CRC error signal Scrr, and outputs the CRC error signal Scrr to the operation controller 300. Then, the control proceeds to the next Step S38.
[0070]
In step S38, similarly to step S38 described above, the operation controller 300 determines whether or not the recording data is normally reproduced from the recording source optical disc (CD) based on the reproduction state signal Sjk and the CRC error signal Scrk. to decide. If it is determined No, the control returns to step S24 described above, and further decelerates from the current quasi-high-speed playback multiple K to further search for the allowable maximum playback speed Nmax. On the other hand, if Yes, the control proceeds to step S19 described above.
[0071]
Note that if the result of step S19 is No, that is, if the recording capacity of the recording destination optical disc (MD) is insufficient with respect to the amount of reproduction recording data of the recording source optical disc (CD), the control proceeds to step S40.
[0072]
In step S40, for example, a predetermined error process such as displaying a recording capacity shortage of the recording destination optical disc (MD) on the display unit 400 is performed, and the control ends.
[0073]
With the configuration described above, the optical disk high-speed playback recording apparatus HSC according to the present invention records the playback data on the recording destination optical disk in a predetermined recording unit while playing back the recording source optical disk at a speed higher than the normal playback speed. In this process, if the data is reproduced in a defective manner, the defective data is written to the recording destination disk, but the reproduction speed is reduced by a predetermined amount without writing the UTOC information regarding the defective data, Wait for data recovery to recover. Then, when the data reproduction is recovered, the UTOC information is controlled to be written for each predetermined recording unit. Then, for the next data reproduction, high-speed reproduction recording of the optical disk can be realized at an appropriate speed according to the reproduction quality by reproducing the reproduction speed at the original high-speed reproduction before deceleration.
[0074]
Furthermore, since the recording unit can be arbitrarily set to any one of the recording source optical disk, the track, the sector, and the smaller data block, the applicable range of the slow playback due to the generation failure can be appropriately set. As a result, it is possible to reduce the influence of reproduction failure occurring in the relationship with the recording source optical disk or the optical disk high-speed reproduction recording apparatus HSC, and to perform high-speed reproduction recording.
[0075]
Further, the optical disk high-speed playback recording apparatus HSC preferably uses a CD as a recording source optical disk and an MD as a writable / rewritable optical disk. However, as the recording source optical disk, an optical disk represented by CD, DVD, and VCD that can be mounted on the combination drive 130 can be used. Further, as a writable / rewritable optical disk, an optical disk represented by CD-RW or DVD-RW, which can record management information of data to be recorded, such as UTOC information, can be used.
[0076]
Furthermore, in the present embodiment, the reproduction state from the recording source optical disk is changed to the buffering state (reproduction state signals Sjr, Sjk) of the content data Sad and the subcode Ssb input to the read data detector 200, The determination is made based on both the bit shift (CRC error signals Scrr and Scrk) between the content data Sad and the subcode Ssb. However, it goes without saying that the determination may be based on only one of them.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration of an optical disc high-speed playback recording apparatus according to an embodiment of the present invention.
FIG. 2 is a flowchart showing the operation of the optical disc high-speed playback recording apparatus shown in FIG.
[Explanation of symbols]
HSC optical disk high-speed playback recording device
130 Combination Drive
132_1 CD drive
132_2 DVD drive
132_3 VCD drive
132_4 MP3 drive
134 Drive system controller
136 Playback speed selector
138 Optical disk controller
200 Read data detector
230 MD drive
230_1 MD system controller
230_3 writer / reader
230_5 Rewritable optical disc
300 Operation controller
320 Receiver
330 remote control
400 display unit

Claims (11)

Digital data is first reproduction speed out read from a large second reproduction speed a first optical disc being recorded is a standard playback speed, by written in writable second optical disk, the reading the digital data issued an optical disk high-speed reproducing recording apparatus for recording on the second optical disc,
Bit shift detecting means for detecting a bit shift of the digital data to which the read,
If the bit shift is detected in the digital data to which the read is a the than the second playback speed by a first predetermined speed smaller third reread detecting means reads again the playback speed Dede digital data Optical disk high-speed playback recording apparatus provided. The bit shift detection means includes
Reproducing means for reproducing the content component and subcode component from the read digital data,
Serial information generating means for serially arranging the reproduced content component and subcode component to generate serial information;
CRC check means for performing a CRC check on the subcode component of the serial information to generate a CRC error signal;
The optical disc high-speed playback recording apparatus according to claim 1, further comprising: a bit shift determination unit that determines a bit shift when a CRC error exists for a predetermined time or more based on the CRC error signal. Optical disk high-speed reproducing apparatus according to claim 1, further comprising a quality judging means for judging the reproduction quality of the digital data to which the read,
The reread detecting means, when the digital data to which the read is determined to poor quality, the first from the second reproduction speed by a first predetermined speed smaller third reproduction speed Dede the digital data again The optical disk high-speed playback recording apparatus according to claim 1, wherein the optical disk is read out. The quality determination means includes
Reproducing means for reproducing the content component and subcode component from the read digital data,
Buffering means for temporarily storing the reproduced content component and subcode component;
4. The optical disk high-speed playback recording apparatus according to claim 3, further comprising an underrun detection unit that determines that the content component and the subcode component stored in the buffering unit are defective if the amount of the content component and the subcode component is not more than a predetermined amount. In the optical disk high-speed reproducing recording apparatus according to claim 1, further, if the bit shift is detected in digital data said read again, by a second predetermined speed than the third reproduction speed smaller fourth optical disk high-speed reproducing apparatus according to claim 1 and a second reread out means for reading out again the playback speed Dede digital data.   6. The optical disc high speed reproduction recording apparatus according to claim 5, wherein the first predetermined speed and the second predetermined speed are the same.   2. The optical disc high-speed playback recording apparatus according to claim 1, wherein the first predetermined speed is an arbitrary value determined so that the third playback speed does not become lower than the first playback speed.   6. The optical disc high-speed playback recording apparatus according to claim 5, wherein the second predetermined speed is an arbitrary value determined so that the fourth playback speed does not become lower than the first playback speed. When the said digital data read out is written in the second optical disc, wherein the management information of those 該De digital data is characterized to be written in the recording data management information storage area of the second optical disk Item 4. The optical disk high-speed playback recording device according to Item 1.   11. The optical disk high-speed according to claim 10, wherein the second optical disk is MD (R), the recording data management information storage area is a UTOC area, and the management information is UTOC information. Playback recording device.   2. The optical disk high-speed playback recording apparatus according to claim 1, wherein the first optical disk is a CD (R).

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