CN1296914C - Optical disk device and control method thereof - Google Patents
Optical disk device and control method thereof Download PDFInfo
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- CN1296914C CN1296914C CNB2004100983466A CN200410098346A CN1296914C CN 1296914 C CN1296914 C CN 1296914C CN B2004100983466 A CNB2004100983466 A CN B2004100983466A CN 200410098346 A CN200410098346 A CN 200410098346A CN 1296914 C CN1296914 C CN 1296914C
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- 230000003287 optical effect Effects 0.000 title claims abstract description 53
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000001514 detection method Methods 0.000 claims abstract description 11
- 230000002093 peripheral effect Effects 0.000 claims abstract description 5
- 238000012423 maintenance Methods 0.000 claims description 4
- 230000014759 maintenance of location Effects 0.000 abstract 2
- 230000000717 retained effect Effects 0.000 abstract 1
- 230000015572 biosynthetic process Effects 0.000 description 7
- 238000005755 formation reaction Methods 0.000 description 7
- 230000008929 regeneration Effects 0.000 description 7
- 238000011069 regeneration method Methods 0.000 description 7
- 239000004065 semiconductor Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000001172 regenerating effect Effects 0.000 description 2
- 230000009193 crawling Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
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- 230000003252 repetitive effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
- G11B7/125—Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
- G11B7/126—Circuits, methods or arrangements for laser control or stabilisation
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/10009—Improvement or modification of read or write signals
- G11B20/10222—Improvement or modification of read or write signals clock-related aspects, e.g. phase or frequency adjustment or bit synchronisation
- G11B20/1024—Improvement or modification of read or write signals clock-related aspects, e.g. phase or frequency adjustment or bit synchronisation wherein a phase-locked loop [PLL] is used
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
- G11B7/00718—Groove and land recording, i.e. user data recorded both in the grooves and on the lands
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
- G11B7/0079—Zoned data area, e.g. having different data structures or formats for the user data within data layer, Zone Constant Linear Velocity [ZCLV], Zone Constant Angular Velocity [ZCAV], carriers with RAM and ROM areas
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B2020/10916—Seeking data on the record carrier for preparing an access to a specific address
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
- G11B2020/1264—Formatting, e.g. arrangement of data block or words on the record carriers wherein the formatting concerns a specific kind of data
- G11B2020/1265—Control data, system data or management information, i.e. data used to access or process user data
- G11B2020/1267—Address data
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Software Systems (AREA)
- Theoretical Computer Science (AREA)
- Signal Processing (AREA)
- Optical Recording Or Reproduction (AREA)
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
Abstract
To provide an optical disk device and a control method thereof. This optical disk device is provided with a reading part 15 for reading the reflected light of a beam spot applied to an optical disk to output a reading signal, a detection part 12 for detecting the address information of a current beam spot based on the reading signal, a retention part 59 for retaining the address information detected by a detection part, moving parts 38 and 20 for moving the beam spot to an inner or outer peripheral direction, and a decision part 61 for detecting the address information after the completion of the movement by the detection part, and comparing it with address information before the movement which is retained by the retention part to determine the reliability of the beam spot movement.
Description
Technical field
The present invention relates to optical disc apparatus and control method thereof, particularly in the method for carrying out confirming when its session shifts the address.
Background technology
As everyone knows, recently as recording medium DVD (the Digital VersatileDisc: high density disk) wait CD universal of numerical data.And, in the optical disc apparatus of these CDs of regeneration, wish high reliability.
In such CD, it is the session that spiral fashion forms that posting field is set, and comprises the session number in address information.And when the processing of the fast forwarding and fast rewinding in when regeneration etc., after sending pick-up with motor, camera lens is suitable to tilt to carry out the inching (session transfer) of each session by making with driver.Thereby, when when session shifts, also judging whether correctly to transfer under the situation of destination address, judge whether the session number is desirable number.
Open in the flat 2002-109756 communique the spy, shift then shift, judge based on address information and shift whether successful optical disc apparatus if disclosed the order session.At this, not the target session if be judged as, then repetitive displacement once more.
Open in the technology of flat 2002-109756 communique above-mentioned spy, judge according to the address after shifting whether transfer is successful.But the method is because be to shift the back at 1 session to detect physical address, so do not know whether to detect the physical address of the adjacent session after 1 session shifts, also can think the physical address that might detect other session.Thereby, after 1 session shifts, detect physical address 2 times and compare if fail in exam, because do not know whether physical address is correct, so on the physical address that reliability is arranged detects, need the time.
Summary of the invention
The present invention In view of the foregoing finishes, its purpose is to provide a kind of and passes through when the session of light beam spot shifts, by address before the comparison transfer processing and the address after the transfer processing, can carry out the optical disc apparatus and the control method thereof of the reliability affirmation of transfer processing rapidly.
A kind of optical disc apparatus is provided according to an aspect of the present invention, it is characterized in that comprising: read the reflected light that is radiated at the light beam spot on the CD, the reading unit of the signal that output is read; The swing that signal generates with above-mentioned CD of reading of reading according to above-mentioned reading unit changes corresponding swinging signal, based on the detecting unit of the physical address information of the current light beam spot of this wobble signal detection; Maintenance is by the holding unit of the detected physical address information of above-mentioned detecting unit; On interior week of above-mentioned CD or peripheral direction, make above-mentioned light beam spot move the mobile unit of 1 session; Identifying unit, to compare at the session number of the above-mentioned physical address information before move with the light beam spot of the session number of the detected physical address information of above-mentioned detecting unit and the maintenance of above-mentioned holding unit mobile back that above-mentioned mobile unit has been finished above-mentioned light beam spot, when its Hamming distance is 1, is judged to be and has correctly carried out moving of above-mentioned light beam spot.
A kind of control method of optical disc apparatus is provided according to another aspect of the present invention, the reading unit of described optical disc apparatus reads the reflected light that is radiated at the light beam spot on the CD, export it and read signal, the control method of described optical disc apparatus is characterised in that and comprises: change corresponding swinging signal by detecting unit according to the swing that signal generates with above-mentioned CD of reading that above-mentioned reading unit reads, based on the 1st step of the physical address information of the current light beam spot of this wobble signal detection; The 2nd step that keeps the physical address information be detected by holding unit; On interior week of above-mentioned CD or peripheral direction, make above-mentioned light beam spot move the 3rd step of 1 session by mobile unit; To compare at the session number of the above-mentioned physical address information before move with the light beam spot of detected physical address information of above-mentioned detecting unit and the maintenance of above-mentioned holding unit mobile back that above-mentioned mobile unit has been finished above-mentioned light beam spot by address comparing unit, when its Hamming distance is 1, be judged to be the 4th step that moves of correctly having carried out above-mentioned light beam spot by identifying unit.
Description of drawings
Fig. 1 shows one embodiment of the invention, is to show the block scheme that is used to illustrate optical disc apparatus.
Fig. 2 is the figure that shows that the pick-up of the optical disc apparatus be used for illustrating same embodiment constitutes in detail.
Fig. 3 is the detailed square frame pie graph in swing PLL unit/address detected unit of showing the optical disc apparatus be used for illustrating same embodiment.
Fig. 4 is the oscillogram of the signal of showing the swing PLL unit/address detected unit of the optical disc apparatus be used for the illustrating same embodiment signal waveform when reading.
Fig. 5 is the figure of the video disc recording session periphery layout of showing that the optical disc apparatus be used for illustrating same embodiment is handled.
Fig. 6 is the figure of DVD physical address format of future generation of the swinging signal of the CD of showing that the optical disc apparatus be used for illustrating same embodiment is handled.
Fig. 7 is the figure that shows that the session the when optical disc apparatus be used for illustrating same embodiment does not read the address when shifting shifts.
Fig. 8 is the figure that shows that the session the when optical disc apparatus be used for illustrating same embodiment reads the address when shifting shifts.
Fig. 9 shows that the optical disc apparatus be used for illustrating same embodiment reads the process flow diagram of address action when shifting.
Embodiment
Below, the embodiment that present invention will be described in detail with reference to the accompanying.Fig. 1 shows the block scheme of the optical disc apparatus of explanation in the present embodiment, and Fig. 2 is the figure that shows the detailed formation of this optical disc apparatus pick-up.Fig. 3 is a block scheme of showing the swing PLL unit/address detected unit of this optical disc apparatus.
The optical disc apparatus that＜present embodiment is related 〉
(constituting and action)
In the present embodiment Shuo Ming optical disc apparatus as Fig. 1 and shown in Figure 2 constitute.At this, CD D is CD that can user data or reads special-purpose CD, but describes as the CD that can write down in the present embodiment.CD as writing down has DVD-R, DVD-RAM, CD-R, CDs such as CD-RW.
Spiral fashion forms piston ring land road and raceway groove on the surface of CD D.This dish D is by spindle motor 13 driven in rotation.Information record and regeneration to CD D are undertaken by pick-up 15.
Pick-up 15 connects via gear and spindle motor 30.This spindle motor 30 is by spindle motor driver 31 controls that are connected on the data bus 39.Not shown permanent magnet is set on the fixed part of spindle motor 30, and by not shown drive coil excitation, pick-up 15 moves on the radial direction of CD D.
Object lens 22 are set on pick-up 15 as shown in Figure 2.Object lens 22 can be driven to focus direction (optical axis directions of lens) by drive coil 21 and move.In addition, object lens 22 are driven and can be moved at tracking direction (with the direction of lens axis quadrature) by drive coil 20, by the light beam spot of mobile laser, as described later, can carry out session and shift.
Modulation circuit 19 carries out 8-14 modulation (EFM) to the user data that is provided via interface circuit 43 from main device 44 when information writes down, EFM is provided data.When laser control circuit 18 writes down in information (when mark forms), the EFM data based on providing from modulation circuit 19 offer semiconductor laser diode 28 to the signal that writes usefulness.In addition, laser control circuit 18 when information reads offering semiconductor laser diode 28 than writing with little the reading of signal with signal.
Semiconductor laser diode 28 is corresponding to the signal generation laser that provides from laser control circuit 18.The laser that takes place from semiconductor laser diode 28 is radiated on the CD D via collimation lens 25, half prism 24, optical system 23 and object lens 22.Reflected light from CD D is introduced into photodetector 26 via object lens 22, optical system 23, half prism 24 and collector lens 27.
Photodetector 26 is made up of 4 optical detecting units of cutting apart, and detection signal A, B, C, D are offered RF amplifier 12.RF amplifier 12 offers tracking Control unit 38 to the trail-and-error signal TE as (A+D)-(B+C), and the focus error signal FE as (A+C)-(B+D) is offered focus control unit 37.
In addition, RF amplifier 12 offers swing PLL unit/address detected unit 36 to the swinging signal W as (A+D)-(B+C), and the RF signal as (A+D)+(B+C) is offered data reproduction unit 35.
On the other hand, the output signal of focus control unit 37 is provided for and focuses on drive coil 21.Thus, laser is carried out the correct control that focuses on the recording film of CD D all the time.In addition, tracking Control unit 38 generates the session drive signal corresponding to trail-and-error signal TE, offers the drive coil 20 of tracking direction.
By carrying out above-mentioned focus control and tracking Control, the variation from the reflectivity in the hole session that be formed on CD D on etc. corresponding with recorded information of the output signal of the optical detecting unit of photodetector 26 with signal RF reflection.This signal is provided for data reproduction unit 35.
Data reproduction unit 35 is based on the regeneration clock signal from PLL circuit 16, regenerative recording data.In addition, data reproduction unit 35 has the function of the amplitude of measured signal RF, and this measured value is read by CPU40.
With above-mentioned tracking Control unit 38 control object lens 22 time, be in the optimum position of CD in order to make object lens 22, by control spindle motor 30, control pick-up 15.
In addition, circuit for controlling motor 14, laser control circuit 18, PLL circuit 16, data reproduction unit 35, focus control unit 37, tracking Control unit 38 etc. can be used as servo control circuit and are formed in 1 LSI chip.These circuit are controlled by CPU40 via bus 39.
CPU40 according to via interface circuit 43 from the action command that main device 44 provides, this optical disc apparatus is controlled comprehensively.In addition, CPU40 uses RAM41 as the operating area, carries out specified action according to the program that is recorded on the ROM42.
In addition, as shown in Figure 3, swing PPL unit/address detected unit 36 has: swing PLL circuit 51; Synchronous signal detection unit 56; The initial detecting unit 57 in address area; Address holding unit 58; 1 session shifts preceding address holding unit 59; Address comparing unit 60; Reliability decision unit 61.
At this, swing PLL circuit 51 has: the A/D circuit 52 that swinging signal is provided; Its output is carried out the integrating circuit 53 of integration; Conversion is carried out its output in the D/A circuit 55 of D/A; Signal handle based on conversion is sent out the VCO circuit 54 that the signal that shakes offers A/D circuit 52.Swing PLL unit/address detected unit 36 is as the back describes in detail, and the reliability when judging that based on swinging signal W session shifts is exported AD with the session address reliability sign F is outputed to data bus 39.
(session transfer)
Have above-mentioned formation, the optical disc apparatus that carries out Regeneration Treatment and recording processing carries out session and shifts as described below, also confirms the reliability that this session shifts.
Fig. 4 is the figure of the signal of showing the swing PLL unit/address detected unit 36 of the optical disc apparatus the relate to present embodiment signal waveform when reading, and Fig. 5 is the figure of layout one example around the record session of the CD of showing that same optical disc apparatus is handled.Fig. 6 is the figure of DVD physical address format one example of future generation of the CD swinging signal of showing that same optical disc apparatus is handled.Fig. 7 shows the figure that is used to illustrate the session transfer when same optical disc apparatus does not read the address when shifting.Fig. 8 shows the figure that is used to illustrate the session transfer when same optical disc apparatus reads the address when shifting.Fig. 9 shows to be used to illustrate that the address when same optical disc apparatus shifts reads the process flow diagram of action.
Fig. 4 is the signal waveforms of signal when reading, as the addressing method of optical disc recording medium, and each signal relation when being illustrated in wobble modulations corresponding record session.From the record session regeneration numerical data (perhaps, the record numerical data) of crawling, this moment, recorded data was recorded on the appointed positions.
Then, physical address information is by being read also demodulation and obtained with the swing 71 corresponding swinging signal W that write down session by swing PLL unit/address detected unit 36.Fig. 4 shows and reads light beam 72, detected swinging signal W, the modulating rule when imbedding information in wobble modulations on the session.The sine wave of swinging signal W (NPW) as hole information " 0 ", is used cosine wave (CW) (IPW) recording address information as " 1 ".
In addition, Fig. 5 is the figure of layout of the physical address information of the structure of showing that the record session to optical disc recording medium all uses in ridge/ditch.Adopt the addressing of wobble modulations because in raceway groove, carry out, so even must constitute the also correct addressing of record regenerating on the ridge road.
Thereby, adopt this structure of partitioned mode, optical disc recording medium is divided into a plurality of districts on radial direction, recording capacity constitutes certain segment information bag in each district, to wherein imbedding " area code sign indicating number ", " session number ", " segment number sign indicating number " as physical address information with the wobble modulations of raceway groove.If the district changes, then change the angle of cutting apart that constitutes section with recording density unit about equally, recording capacity is carried out optimization.
If be arranged to formation shown in Figure 5, then in ridge/ditch mode, it is identical value between adjacent session that the address information that adopts ditch to swing is removed the session number, even also can read physical address information in the ridge road.The session number is used and ditch usefulness by the configuration ridge, because its formation is no matter to be that ridge or ditch can obtain information, so do not have problems.
(physical address information)
In addition, Fig. 6 is the figure that shows the data configuration of physical address with all graphs of a relation.In the aggregate 84～86 that is called as the WAP (Wobble Address Periodic Position) that constitutes with WDU (Wobble Data Unit) 17 groups (81～83), imbed physical address information.Because connecting, this WAP can finish the session swing, so become the cycle of imbedding of physical address data with definite cycle of WAP.
39 formations of physical address data 85 usefulness, shown in each information 87, " segment information (Segment information) ", " sector address (Segment address) ", " regional address (Zone address) ", " odd even address (Parity address) ", " ditch address (Grooveaddress) ", " ridge address (Land address) " are arranged.Physical address data 85 is split into per 3 one group and is imbedded by the modulation treatment of distributing to each WDU.That is, at this, memory areas number 89, session number 90, segment number sign indicating number 91.
The WDU82 that imbeds address information is 3, and 4 swings of 1 usefulness are corresponding.Therefore, initial 4 swings of WDU constitute as IPW, are the initial identification of WDU to be become be easy to constitute.68 swings were defined as NPW after as a result of the address information of WDU82 was imbedded.
Therefore, because address date all is 39, so the WDU82 that needs is Unit 13, initial WDU is configured the synchronizing signal 84 of WAP, and 3 unit of rear WDU83 constitute with no modulating unit (Unity field) 86.
Imbedding with such session wobble modulations in the record session of physical address, recording information data, but record data 92 in this case are for the data of 77376 bytes, at the VFO of home record 71 bytes (during the regeneration action, be used for generating easily the certain frequency signal of data demodulates with channel clock), record is used to carry out " PA zone (PA field) ", " reserve area (Reserved field) ", " total 22 bytes of buffer area (Bufferfield) of data block connection processing in the wings.
Total goes up record 77469 bytes at 7 physical segments (9996 swing).Use the local recording information data of " physical segment " address date in appointment by such restriction, the address date of physical segment is read and is become very important.
In the swing of CD with above such formation recording physical address.When from the swing of such CD, reading under the situation of physical address, detect synchronizing signal from swinging signal W, generate the corresponding timing signal of synchronizing signal therewith, corresponding to this timing signal from swinging signal with address information extraction, demodulation and obtain.
(method of trying to achieve of address information)
Below, for the timing that obtains address information on the basis of above-mentioned swinging signal, explanation is not used under the situation of method of this embodiment and is used the situation of the method for this embodiment respectively.
At first, use Fig. 7 that the situation of the adquisitiones of the address information of not using this embodiment is described.In Fig. 7, when from present session point P1 under adjacent session point P2 carries out situation that 1 session shifts, the detection of physical address is from session point P2.
At this, be under the situation in the overseas place of physical address area as session point P2, begin to carry out physical address from session point P3 and detect.Then, should confirm the reliability of physical address, further detect the physical address of the session point P4 among the figure,, can confirm the correct of the session point point of arrival by comparing with session point P3.
But, in such method,, need the time of the physical address of detection session point P3 or session point P4 in order to ensure the reliability that physical address detects.
The adquisitiones of the address information of present embodiment is described on the other hand.The DVD physical address format of future generation of the swinging signal of CD as shown in Figure 6, physical address is made of " area code sign indicating number ", " session number ", " segment number sign indicating number ", with 1 physical address of 1 WAP formation.Session number wherein can be confirmed the reliability of the physical address when 1 session shifts by utilizing this character of Hamming distance=1 of adjacent session number in same section.
That is, in the adquisitiones of address information in this embodiment, with the address detected unit 36 of Fig. 3 carrying out as shown in Figure 8, these orders are used the flowchart text of Fig. 9 simultaneously.
At first, each physical address of present record session point PA remains at (S11) in the address holding unit 58 with register etc.Below, after by spindle motor 30 etc. pick-up 15 being moved according to operating in of user's F.F. and rewind down etc. as an example, under the situation that needs session to shift, shift the instruction that preceding address holding unit 59 provides 1 session transfer command J from 1 sessions such as CPU40, the address before the transfer that is maintained in the address holding unit 58 is remained on 1 session shift preceding address holding unit 59 (S11) to address detected unit 36.
Meanwhile, the instruction by giving tracking Control unit 38 position session transfer command J by CPU40 etc. offers drive coil 20 to tracking control signal by tracking Control unit 38.Thus, object lens 22 carry out displacement, and light beam spot carries out session from session point PA to session point PB and shifts (S12).
Then, obtain the physical address of the some PB after 1 session shifts, remain on (S13) in the address holding unit 58.Thereafter, address comparing unit 60 by relatively shift the address before 1 session of preceding address holding unit 59 from 1 session and shift from 1 session of address holding unit 58 after the address, session number (S14) relatively.
At this moment, when the outer circumferential side of CD shifts, judge whether the session number that is included in the address information only increases the amount of movement part at light beam spot, when light beam spot to interior all side shiftings of CD the time, judge whether the session number only reduces movable part.
Then, the judged result of address comparing unit 60 is offered reliability decision unit 61,, then reliability sign F for example is set to " 1 ", offer CPU40 or tracking Control unit 38 if reliability decision unit 61 confirms that the session number changes 1 session.Thus, finish transfer processing,, return step S11, carry out session transfer processing (S15) once more when shifting under the unsuccessful situation when shifting under the case of successful.
That is,,, can be judged as the session transfer and correctly carry out then by detecting the address information in session point PB if the session point PB that adopts session to shift is a physical address area.In addition, if the session point PB that adopts session to shift is beyond physical address,, can be judged as the session transfer and correctly carries out then by detecting the address information in session point PC.
That is,, then compare, can more promptly confirm the reliability that session shifts than the situation of not using the present embodiment method of Fig. 7 if adopt the adquisitiones of the address information of present embodiment, and then, can confirm that 1 session transferring position is correct.
In addition, the present invention is not limited to the above embodiments self, the implementation phase in the scope that does not break away from its purport inscape various distortion can be arranged and specialize.In addition, by making up a plurality of inscapes that are disclosed in the above-described embodiment aptly, can form various inventions.For example, can also from whole inscapes that embodiment shows, delete several inscapes.And then, also can make up the inscape that relates to different embodiment aptly.
Claims (8)
1, a kind of optical disc apparatus is characterized in that comprising:
Read the reflected light of the light beam spot (72) that is radiated on the CD, the reading unit (15) of the signal that output is read;
The swing that sequential signal generates with above-mentioned CD of reading of reading according to above-mentioned reading unit (15) changes corresponding swinging signal, based on the detecting unit (12) of the physical address information of the current light beam spot of this wobble signal detection (72);
Maintenance is by the holding unit (59) of the detected physical address information of above-mentioned detecting unit (12);
On interior week of above-mentioned CD (D) or peripheral direction, make above-mentioned light beam spot (72) move the mobile unit (20,38) of 1 session;
Identifying unit (61), will be at above-mentioned mobile unit (20,38) light beam spot (72) that keeps with the session number and the above-mentioned holding unit (59) of the detected physical address information of above-mentioned detecting unit (12) of the mobile back of having finished above-mentioned light beam spot (72) the session number that moves preceding above-mentioned physical address information is compared, when its Hamming distance is 1, is judged to be and has correctly carried out moving of above-mentioned light beam spot (72).
2, optical disc apparatus according to claim 1 is characterized in that:
Above-mentioned holding unit (59) all remains current physical address information no matter above-mentioned light beam spot (72) has or not to move.
3, optical disc apparatus according to claim 1 is characterized in that:
When above-mentioned mobile unit (20,38) is judged to be the mobile failure of above-mentioned light beam spot (72) at above-mentioned identifying unit (61), carry out moving of above-mentioned light beam spot (72) once more.
4, optical disc apparatus according to claim 1 is characterized in that:
Above-mentioned identifying unit (61) at above-mentioned light beam spot (72) when the outer circumferential side of above-mentioned CD moves, judge that whether the session number that is included in the above-mentioned address information is by the corresponding increase of amount of movement part, during to interior all side shifting of above-mentioned CD, judge whether above-mentioned session number reduces by the amount of movement part is corresponding at above-mentioned light beam spot (72).
5, a kind of control method of optical disc apparatus, the reading unit of described optical disc apparatus (15) read the reflected light of the light beam spot (72) that is radiated on the CD, export it and read signal, and the control method of described optical disc apparatus is characterised in that and comprises:
Change corresponding swinging signal by detecting unit (12) according to the swing that signal generates with above-mentioned CD of reading that above-mentioned reading unit (15) reads, based on the 1st step (S11) of the physical address information of the current light beam spot of this wobble signal detection (72);
The 2nd step (S11) that keeps the physical address information be detected by holding unit (59);
On interior week of above-mentioned CD (D) or peripheral direction, make above-mentioned light beam spot (72) move the 3rd step (S12) of 1 session by mobile unit (20,28);
Will be by address comparing unit (60) at above-mentioned mobile unit (20,28) having finished the session number that light beam spot (72) that the mobile back of above-mentioned light beam spot (72) keeps with detected physical address information of above-mentioned detecting unit (12) and above-mentioned holding unit (59) moves preceding above-mentioned physical address information compares, when its Hamming distance is 1, be judged to be the 4th step that moves of correctly having carried out above-mentioned light beam spot (72) (S13～S15) by identifying unit (61).
6, the control method of optical disc apparatus according to claim 5 is characterized in that:
In above-mentioned the 2nd step (S11), mobile no matter above-mentioned light beam spot (72) has or not, holding unit (59) all remains current physical address information.
7, the control method of optical disc apparatus according to claim 5 is characterized in that:
When in above-mentioned the 4th step, being judged to be the mobile failure of above-mentioned light beam spot (72), in above-mentioned the 3rd step (S12), carry out moving of above-mentioned light beam spot (72) once more by mobile unit (20,38) by identifying unit (61).
8, the control method of optical disc apparatus according to claim 5 is characterized in that:
In above-mentioned the 4th step (among the S13～S15), identifying unit (61), at above-mentioned light beam spot (72) when the outer circumferential side of above-mentioned CD moves, judge that whether the session number that is included in the above-mentioned address information is by the corresponding increase of amount of movement part, during to interior all side shifting of above-mentioned CD, judge that whether above-mentioned magneto-optic road number is by the corresponding minimizing of amount of movement part at above-mentioned light beam spot (72).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003424963A JP2005182949A (en) | 2003-12-22 | 2003-12-22 | Optical disk device |
| JP2003424963 | 2003-12-22 |
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| Publication Number | Publication Date |
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| CN1637882A CN1637882A (en) | 2005-07-13 |
| CN1296914C true CN1296914C (en) | 2007-01-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2004100983466A Expired - Fee Related CN1296914C (en) | 2003-12-22 | 2004-12-03 | Optical disk device and control method thereof |
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| Country | Link |
|---|---|
| JP (1) | JP2005182949A (en) |
| KR (1) | KR100662592B1 (en) |
| CN (1) | CN1296914C (en) |
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2003
- 2003-12-22 JP JP2003424963A patent/JP2005182949A/en active Pending
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2004
- 2004-11-26 KR KR1020040098017A patent/KR100662592B1/en not_active IP Right Cessation
- 2004-12-03 CN CNB2004100983466A patent/CN1296914C/en not_active Expired - Fee Related
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| CN1110815C (en) * | 1996-07-16 | 2003-06-04 | 三星电子株式会社 | Real-time track seek apparatus and method therefor |
| US6442111B1 (en) * | 1998-10-29 | 2002-08-27 | Pioneer Corporation | Track jump apparatus |
| CN1333536A (en) * | 2000-05-15 | 2002-01-30 | 惠普公司 | Jump test for CD recording groove |
| JP2002298371A (en) * | 2001-03-30 | 2002-10-11 | Fujitsu Ten Ltd | Disk reproducing device |
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| JP2003085792A (en) * | 2001-09-14 | 2003-03-20 | Pulstec Industrial Co Ltd | Adjustment method and adjustment device for optical pickup |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2005182949A (en) | 2005-07-07 |
| KR20050063675A (en) | 2005-06-28 |
| CN1637882A (en) | 2005-07-13 |
| KR100662592B1 (en) | 2007-01-02 |
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