CN1937045A - Automatic write strategy calibration method for optical drive - Google Patents
Automatic write strategy calibration method for optical drive Download PDFInfo
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- CN1937045A CN1937045A CNA2006101118453A CN200610111845A CN1937045A CN 1937045 A CN1937045 A CN 1937045A CN A2006101118453 A CNA2006101118453 A CN A2006101118453A CN 200610111845 A CN200610111845 A CN 200610111845A CN 1937045 A CN1937045 A CN 1937045A
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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
- G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
- G11B7/0045—Recording
- G11B7/00456—Recording strategies, e.g. pulse sequences
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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
- G11B7/1267—Power calibration
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Abstract
Automatic write strategy calibration method for optical drive. The write strategy calibration system for an optical media playback device comprises memory for storing a write strategy table. A control module generates a write signal to write a training pattern to an optical storage medium according to calibration data stored in the write strategy table. A write strategy analysis module receives a read signal indicative of the training pattern written to the optical storage medium and adjusts the calibration data according to the read signal.
Description
The cross reference of related application
The application requires to enjoy the U.S. Provisional Application No.60/719 that submitted on September 23rd, 2005,866 right of priority.The disclosed content of above-mentioned application is incorporated into this by reference in full.
Technical field
The present invention relates to optical medium playback reproducer and medium, more specifically, relate to the calibration of writing strategy optical medium.
Background technology
Optical medium such as compact disc (CD) and digital multifunctional dish (DVD) is stored the data of reading with optical means.CD generally includes the reflection horizon of the substrate that is made of plastics and alternating reflex/not, and described alternating reflex/the reflection horizon does not comprise the continuous helical track that is used for coded data.The optical medium playback reproducer with laser transfer to the track with sense data.The light that the optical sensor reception reflects from the coded data on the track.
With reference now to Fig. 1,, exemplary disposable recordable disc 10 (for example, CD recordable disc/CD-R, and/or DVD recordable disc/DVD+/-R) generally include: polycarbonate plastic substrate 12, dye layer 14 and reflective metal layer 16.Reflective metal layer 16 for example can comprise aluminium lamination.When dish 10 blank, dye layer 14 is transparent, and light sees through from it, and opens from reflective metal layer 16 reflections.When with laser-light write dish 10, the chosen part of dye layer 14 is heated with certain strength and frequency, and it is opaque that selected part is become.The opaque section of dye layer 14 is reflected light not.The opaque not reflecting part of dye layer 14 is called as " mark (mark) ".On the contrary, the transparent reflecting part of dye layer is called as " space (space) ".The optical medium playback reproducer can comprise: from coiling reading laser instrument and changing the write laser instrument of dye layer 14 to write down of 10 sense datas.
In readout, CD is rotated by the optical medium playback reproducer, and the optical medium playback reproducer generally includes at least one laser instrument, spindle motor and optical sensor.Spindle motor rotary optical medium.Laser is directed on the track of optics medium, and optical sensor is measured reflected light.When optical sensor produced the high current level of corresponding high reflectance (that is, the space), data can be translated into " 1 " (or " 0 ").When optical sensor produced the low level of current of corresponding antiradar reflectivity (that is, mark), data can be translated into " 0 " (or " 1 ").In the identical device, space/marking signal, or so-called NRZI non-return-to-zero inverse (NRZI) signal through conversion can be converted into non-return-to-zero (NRZ) signal.As shown in Figure 2, " 1 " expression changes, and " 0 " expression does not have transformation.
With reference to figure 3, exemplary rewritable disk 20 (for example, CD rewritable disk/CD-RW, and/or DVD rewritable disk/DVD+/-RW) generally include: polycarbonate plastic substrate 22, dielectric layer 24, phase transition compound layer 26 and reflective metal layer 28.Phase transition compound layer 26 for example can be the chemical compound of silver, antimony, tellurium and/or indium.Use the laser instrument heating compound, make it reach Tc and/or more than the melt temperature.When compound cooled off more than melt temperature fast, compound remained on the liquid amorphous state, obtains not reflecting part (that is mark).On the contrary, when the temperature of compound keeps certain-length during the time in Tc, compound became solid-state before cooling down, and obtained reflecting part (that is space).Therefore, except reading laser instrument, the optical medium playback reproducer can also comprise: write laser instrument, its power enough is heated to compound more than the melt temperature; With wipe laser instrument, its power enough is heated to compound more than the Tc.
When using disposable recordable disc or rewritable disk, the process of writing is non-linear.According to setting up mark (and the space when using CD-RW) from the focusing heating of writing laser instrument and/or wiping laser instrument.After this manner, with the high rotation speed of moving CD, thermal diffusion and phase transformation problem can appear.
With reference now to Fig. 4 A, to 4D, show to such as DVD+/-the disposable recordable media of R medium writes required exemplary laser power profile 30.Begin to form mark 32 at orbital position t place, pulse 34 is in the beginning of orbital position t-y place, and mark 32 finishes at orbital position u place, and pulse 34 stops at orbital position u-x place.In other words, as the nonlinear result of thermal diffusion, the adjusting of laser power 30 is that the ideal position from mark 32 is offset.Offset y and x (respective pulses timing edge 36 and 38 respectively) may depend on multiple factor, and these factors include but not limited to laser power 30, media type and/or writing rate.
With reference now to Fig. 5 A and 5B,, show to such as DVD+/-rewritable media of RW medium writes required typical laser power profile 40.Write pulse 42 both greater than cooling power level 44 also greater than erasing power level 46.Distribute 30 similarly to the laser shown in the 4D with Fig. 4 A, pulse 42 began before the desirable initial position t of mark 48, and stopped before the desirable end position u of mark 48.
Since based on heat writing of optical medium had nonlinear characteristic, therefore, must calibrate various power levels and pulse timing edge according to single ideal mark length (that is, on each mark lengths basis).In addition, calibration also depends on the mark adjacency with in the head and the tail space of the either side of mark.In the encoding scheme of using in current optical medium record standard, the length range in mark and space can be from 3T to 14T, and wherein T is a channel bit period.
Be positioned at the data clauses and subclauses how Policy Table's store predetermined forms concrete mark lengths of writing on the optical drive.In other words, because recording process is non-linear, so, write the Policy Table and comprise laser power, pulse timing edge and other related datas that is used for each mark lengths.Usually, write the Policy Table and be stored in the non-volatile memory module that is arranged on the optical drive, for example, in the flash memory module.
Structure is write the calibrating sequence that the Policy Table need depend on media type (for example, the manufacturer of medium) and writing rate usually.Calibrating sequence is to produce in the manufacture process of each optical medium playback reproducer.In addition, calibrating sequence comprises the data of all possible known media type that the potential user that is used to illustrate the optical medium playback reproducer can use, and is stored on the non-volatile memory module.
Yet, when media manufacturer is introduced new media type, must upgrade and write the Policy Table.For example, the user can (for example, from the Internet) download new firmware, it comprise from manufacturer upgraded write the Policy Table.When access to the Internet was unavailable, the user may need to obtain more new building by mail from manufacturer.In some cases, the user may obtain false transmitter or the defective medium that can not correctly write with the original Policy Table of writing unintentionally.Therefore, the many again renewals from drive manufacturers can not solve the problem of writing that is produced.Often, the consumer buys the optical medium playback reproducer such as the DVD driver, and attempt comes function driver with cheap medium.When the consumer finds driver correctly during the write or read medium, a lot of people are returned the shop with driver, cause the cost of drive manufacturers to increase.
Summary of the invention
A kind of tactful calibration system of writing of optical medium playback reproducer that is used for comprises and is used to store the storer of writing the Policy Table.Control module produces write signal, will train pattern to write optical storage medium according to writing among the Policy Table calibration data stored.Write strategy analysis module and receive the read signal that expression is written to the training pattern on the optical storage medium, and adjust calibration data according to read signal.
In other features of the present invention, the training pattern comprises preamble (preamble) pattern and master data sequence, and each in them comprises mark and the space pattern of representing binary data.The training pattern comprises the end of expression preamble pattern and the sync mark that the master data sequence begins.The master data sequence comprises the mark and the space pattern of all possible combination of expressive notation and space length.The training pattern also comprises the reference pattern at least one that is dispersed in training pattern and master data sequence.
In other features of the present invention, time block obtains timely locking on the training pattern according at least one preamble pattern and reference pattern.Time block obtains timely locking on the first conversion edge of reference pattern.The first conversion edge be the conversion forward position of reference pattern and conversion back along in one.The mark and the space pattern that form the preamble pattern are equal to reference pattern.Write strategy analysis module and read to change the edge from the training pattern.Writing in strategy analysis module and the time block at least one adjusts selectively and timely locks.Write strategy analysis module and comprise time block.
In other features of the present invention, the optical medium playback reproducer comprises writes tactful calibration system.The optical medium playback reproducer is that compact disc (CD) can write down driver, CD recordable drive, digital multifunctional dish (DVD) and can write down at least a driver in driver, DVD recordable drive, blue light (Blu-ray) DVD driver and the HD DVD driver.Write the Policy Table and comprise the calibration data that is used for the known optical storage media types.The optical medium playback reproducer rewrites the training pattern after calibration data among the Policy Table is write in adjustment.Writing the Policy Table is stored at least a in volatile memory and the nonvolatile memory.Write in the firmware that the Policy Table is implemented in the optical medium playback reproducer.Write strategy analysis module and communicate by letter, to adjust calibration data with the firmware of optical medium playback reproducer.
In other features of the present invention, the training pattern comprises the master data sequence, and the master data sequence comprises according to the mark of following table and the combination in space:
| Pattern | Purpose |
| 3S/3M，4S/3M | The 4S/3M calibration |
| 3S/3M，3S/4M | The 3S/4M calibration |
| 3S/3M，5S/3M | The 5S/3M calibration |
| 3S/4M，3S/4M | The redundant pattern that is used for the DC balance |
| 3S/3M，4S/4M | The 4S/4M calibration |
| 3S/4M，5S/4M | The 5S/4M calibration |
| 5S/3M，3S/5M | The 3S/5M calibration |
| 4S/3M，4S/5M | The 4S/5M calibration |
| 3S/3M，5S/5M | The 5S/5M calibration |
| 6S/3M，3S/6M | The 3S/6M calibration |
| 5S/3M，4S/6M | The 4S/6M calibration |
| 4S/3M，5S/6M | The 5S/6M calibration |
| 7S/3M，3S/7M | The 3S/7M calibration |
| 6S/3M，4S/7M | The 4S/7M calibration |
| 5S/3M，5S/7M | The 5S/7M calibration |
| 8S/3M，3S/8M | The 3S/8M calibration |
| 7S/3M，4S/8M | The 4S/8M calibration |
| 6S/3M，5S/8M | The 5S/8M calibration |
| 9S/3M，3S/9M | The 3S/9M calibration |
| 8S/3M，4S/9M | The 4S/9M calibration |
| 7S/3M，5S/9M | The 5S/9M calibration |
| 10S/3M，3S/10M | The 3S/10M calibration |
| 9S/3M，4S/10M | The 4S/10M calibration |
| 8S/3M，5S/10M | The 5S/10M calibration |
| 11S/3M，3S/11M | The 3S/11M calibration |
| 10S/3M，4S/11M | The 4S/11M calibration |
| 9S/3M，5S/11M | The 5S/11M calibration |
| 12S/3M，3S/12M | The 3S/12M calibration |
| 11S/3M，4S/12M | The 4S/12M calibration |
| 10S/3M，5S/12M | The 5S/12M calibration |
| 13S/3M，3S/13M | The 3S/13M calibration |
| 12S/3M，4S/13M | The 4S/13M calibration |
| 11 S/3M，5S/13M | The 5S/13M calibration |
| 14S/3M，3S/14M | The 3S/14M calibration |
| 13S/3M，4S/14M | The 4S/14M calibration |
| 12S/3M，5S/14M | The 5S/14M calibration |
Wherein, the mark of xS/yM and space combination comprise the space of length x and the mark of length y, and y and x are integers, and the training pattern also comprises the redundant pattern that is used for the DC balance.
Will understand that other applications of the present invention by the following detailed description.The detailed description and specific examples that should be appreciated that indication the preferred embodiments of the present invention just are used for illustrative purposes, and do not constitute limitation of the scope of the invention.
Description of drawings
Present invention will become more fully understood by the detailed description below in conjunction with accompanying drawing, in the accompanying drawing:
Fig. 1 is the cut-open view according to the disposable CD-R of prior art;
The corresponding N RZI switching signal that Fig. 2 shows exemplary mark/space and produced by the optics playback reproducer of reading optical medium;
Fig. 3 is the cut-open view according to the CD-RW of prior art;
But Fig. 4 A shows the first exemplary laser power profile that disposable recording optically medium is write of being used for according to prior art;
But Fig. 4 B shows the second exemplary laser power profile that disposable recording optically medium is write of being used for according to prior art;
But Fig. 4 C shows the 3rd exemplary laser power profile that disposable recording optically medium is write of being used for according to prior art;
But Fig. 4 D shows the 4th exemplary laser power profile that disposable recording optically medium is write of being used for according to prior art;
But Fig. 5 A shows the first exemplary laser power profile that the rewritable optical medium is write of being used for according to prior art;
But Fig. 5 B shows the second exemplary laser power profile that the rewritable optical medium is write of being used for according to prior art;
Fig. 6 is the functional block diagram that comprises the optical medium playback reproducer of writing the Policy Table according to of the present invention;
Fig. 7 shows the step according to automatic write strategy calibration method of the present invention;
Fig. 8 shows according to exemplary alternately synchronization pattern and data block of the present invention;
Fig. 9 is the functional block diagram that comprises the exemplary optical medium playback reproducer of writing strategy analysis module according to of the present invention;
Figure 10 shows according to exemplary training pattern of the present invention;
Figure 11 A is the functional block diagram of high definition television machine;
Figure 11 B is the functional block diagram of vehicle control system;
Figure 11 C is cellular functional block diagram;
Figure 11 D is the functional block diagram of set-top box; With
Figure 11 E is the functional block diagram of media player.
Embodiment
(one or more) described below embodiment is exemplary, and they do not constitute the restriction to the present invention and application and purposes.For clear, will use identical reference marker to identify similar element in the accompanying drawing.As used herein, term module, circuit and/or device relate to the processor (shared processor, special-purpose processor or processor group) of special IC (ASIC), electronic circuit, the one or more softwares of execution or firmware program and storer, combinational logic circuit, and/or other suitable components of described function are provided.As used herein, the term of " at least one among A, B and the C " should think that the meaning is to use the logic (A or B or C) of non-exclusive logical OR.Should be understood that the step in the method can carry out by different order, and do not change principle of the present invention.
The present invention allows the optical medium playback reproducer to be suitable for various the record and/or the rewritable media type, and needn't rely on manufacturer or firmware update.As a result, because the sales volume that increases and the product repair rate of reduction have improved consumer's satisfaction, and have increased the profit of manufacturer.
More particularly, the present invention allows to calibrate automatically the Policy Table that writes who is stored on the optical medium playback reproducer.Optical medium playback reproducer accurately control is write tactful laser pulse, and accurately measures and write the data that laser instrument is write.In current optical medium memory technology, for some generations product, the accurate control of writing tactful pulse is available.But, traditionally, also do not have to carry out integrated circuit or the module writing and accurately measure both.Though the accurate measurement of readback waveform can be finished (for example, the high-speed figure oscillograph) with the instrument of costliness, this measure is only limited to factory, laboratory or other expensive manufacturing environments.
With reference now to Fig. 6,, the present invention is used for optical medium playback reproducer 50, for example, and dvd system.Optical medium playback reproducer 50 is shown as and comprises: DVD printed circuit board (PCB) (PCB) 52, it comprises impact damper 54, impact damper 54 storage read data, write data and/or the volatibility control codes relevant with the control of optical medium playback reproducer 50.Impact damper 54 can use volatile memory, for example, and the low latency time memorizer of SDRAM or other types.Nonvolatile memory 55, for example flash memory also can be used for critical data, for example, writes form and/or the relevant data of other non-volatile control codes with DVD.The processor 56 that is arranged on the DVD PCB52 is carried out data and/or the control and treatment relevant with the operation of optical medium playback reproducer 50.As required, processor 56 is also carried out the decoding and/or the compression/de-compression of Copy Protection.DVD control module 58 is communicated by letter with main shaft/feeding motor (FM) driver 62 and/or read/write channel module 64 with input/output interface 60.DVD control module 58 is coordinated the control of main shaft/FM driver 62, read/write channel module 64 and processors 56, and through the data I/O of interface 60.
In the write operation process, read/write channel module 64 codings will be write the data that DVD coils by optical read/write (ORW) or optics read-only (OR) device 66.Read/write channel module 64 is handled and is used for the signal of reliability, and for example can use error correction and correction (ECC) coding, running length restriction (RLL) coding etc.In the read operation process, read/write channel module 64 converts the simulation output of ORW or OR device 66 to digital signal.Then, the signal after the conversion is detected and decoding by known technology, to recover by through writing the data on the DVD.
DVD assembly (DVDA) 68 comprises optical storage medium 70, for example, and the DVD dish of energy optical memory data.Optical storage medium 70 is schematically rotated at the spindle motor shown in reference marker 71 places.In read/write operation, spindle motor 71 is with controlled and/or variable speed rotary optical storage medium 70.ORW or OR device 66 move relative to optical storage medium 70, data being write/optical storage medium 70, and/or from optical storage medium 70 read datas.ORW or OR device 66 generally include laser instrument and optical sensor.
With regard to DVD read/write system and DVD read apparatus, in the read operation process, laser is directed into the track place on the optical storage medium 70.The optical sensor induction is by the caused reflection of platform/pit.With regard to the application of DVD read/write (RW), in operating process, laser also can be used to heat the dye layer on the optical storage medium 70.
Main shaft/FM driver 62 control spindle motors 71, it is rotary optical storage medium 70 controllably.Main shaft/FM driver 62 also for example uses voice coil actuator, stepper motor or any other suitable actuator, produces the control signal of location feeding motor 72.Feeding motor 72 is usually with respect to radially mobile ORW of optical storage medium 70 or OR device 66.Laser driver 73 produces the Laser Drive signal based on the output of read/write channel module 64.DVDA 68 comprises the pre-amplification circuit 74 that amplifies the simulation read signal.During read data, the low level signal that pre-amplification circuit 74 amplifies from ORW or OR device 66, and the signal after will amplifying outputs to read/write channel module 64.
Optical medium playback reproducer 50 also comprises coding/decoding module 75, the video of its coding and/or decoding such as any mpeg format.Audio frequency and/or video digital signal processor and/or module 76 and 77 carry out audio frequency respectively and/or vision signal is handled.
A plurality of parts of optical medium playback reproducer 50 can constitute with one or more integrated circuit (IC) or chip.For example, processor 56 and DVD control module 58 can constitute with chip.Main shaft/FM driver 62 and/or read/write channel module 64 also can use the chip identical with processor 56, DVD control module 58 to constitute, and/or with other chip formation.Most of optical medium playback reproducers 50 except that DVDA68 also can be implemented as SOC.
Optical medium playback reproducer 50 is stored and is dynamically updated and writes the Policy Table, and for example, optical medium playback reproducer 50 can be stored in volatile memory 54 and/or the nonvolatile memory 55 writing the Policy Table.Write the Policy Table and comprise calibration data.Optical medium playback reproducer 50 writes (through read/write channel module 64 and/or laser driver 73) according to writing calibration data stored among the Policy Table to optical storage medium 70.Optical medium playback reproducer 50 upgrades and writes calibration data stored among the Policy Table according to the particular type of employed optical storage medium 70.Therefore, calibration data does not need to initiate to upgrade from the outside.
Write the Policy Table in order to upgrade, optical medium playback reproducer 50 will train pattern to write optical storage medium 70 according to initially writing strategy at first.The training pattern can comprise the data of all possible mark of expression and space length combination.According to known optical media types, initial write strategy and can comprise laser power or other data.For example, be used for initially writing strategy and can being stored in the firmware (for example, nonvolatile memory 55) of known media type, and/or be stored on the optical storage medium 70.For the media type of the unknown, can estimate initially to write strategy.For example, initially writing strategy can be the default strategy of storing in the firmware of writing, and/or previous use write strategy.
Then, the optical medium playback reproducer 50 training pattern (through ORW or OR device 66 and/or read/write channel module 64) that reads back and write from optical storage medium 70.The training pattern that optical medium playback reproducer 50 analysis is write, the length and the position of the hope of and pattern whether corresponding with the length of determining mark and space and position.In other words, the distance of the position of hope is departed from optical medium playback reproducer 50 definite marks and space.According to offset distance, optical medium playback reproducer 50 is adjusted and is write the Policy Table, to proofread and correct calibration data gradually.For example, optical medium playback reproducer 50 can be regulated and write the Policy Table, and according to initial policy, marking whether of being write is oversize or too short with reflection.
Optical medium playback reproducer 50 will train pattern to write optical storage medium 70 according to the Policy Table that writes after upgrading, and read the training pattern of being write and be used for analysis.Optical medium playback reproducer 50 repeats this process, up to determining till to write strategy be acceptable.
With reference now to Fig. 7,, automatic write strategy calibration method 80 is from step 82.In the step 84, optical medium playback reproducer 50 energisings of implementation method 80.In the step 86, optical medium playback reproducer 50 will train pattern to write optical storage medium 70.In the step 88, optical medium playback reproducer 50 is read the training pattern write from optical storage medium 70.In the step 90, optical medium playback reproducer 50 is analyzed the training pattern of being write, with the skew of specified data.In the step 92, optical medium playback reproducer 50 determines according to skew whether the training pattern of being write can be accepted.If then method 80 proceeds to step 94.If not, method 80 proceeds to step 96.
In step 94, optical medium playback reproducer 50 continues normal running.For example, optical medium playback reproducer 50 can be write optical storage medium 70 with data according to the current Policy Table that writes.Optical medium playback reproducer 50 can continue operation, till outage in step 98, and/or till new optical storage medium 70 occurring.
In step 96, optical medium playback reproducer 50 is adjusted and is write the Policy Table according to the analysis to the training pattern write.Then, method 80 proceeds to step 86.In this way, method 80 continues to adjust to be write the Policy Table and analyzes the training pattern that obtains, up to find acceptable write strategy till.
With reference now to Fig. 8 and Fig. 9,, the operation of optical medium playback reproducer 50 is described in more detail.The data that are stored on the optical storage medium 70 generally include synchronization pattern 100 and data block 102 alternately.Synchronization pattern 100 is used to identification data block 102.In other words, optical medium playback reproducer 50 must be able to be discerned the position of synchronization pattern 100, so that can correctly read corresponding data block 102.
Optical medium playback reproducer 50 can comprise synchronizing indicator module 104 and time block 106.For example, synchronizing indicator module 104 and/or time block 106 can be positioned on the read/write channel module 64, are positioned on the DVD control module 58, and/or are positioned at other positions of DVD PCB52 as shown in Figure 6.Synchronizing indicator module 104 is used to discern synchronization pattern 100.More particularly, synchronizing indicator module 104 receives the readback data of reading from optical storage medium 70 108, and the transformation edge in the identification synchronization pattern 100.Time block 106 generates timing signal 110 for being arranged in optical medium playback reproducer 50 synchronizing indicator modules 104 and/or other modules.Synchronizing indicator module 104 produces signal of timing error 112, to regulate the timing loop of time block 106.By this way, timing loop can lock write transformation edge in the pattern.For example, timing loop can lock write in the pattern the transformation forward position and/or the back edge.
Optical medium playback reproducer 50 also comprises writes strategy analysis module 120.For example, write strategy analysis module 120 and can be positioned on the read/write channel module 64, be positioned on the DVD control module 58, and/or be positioned at other position of DVD PCB 52 as shown in Figure 6.Write strategy analysis module 120 and receive synchronous detection signal 122, readback data 108 from synchronizing indicator module 104, and from the timing signal 110 of time block 106.Write strategy analysis module 120 according to synchronous detection signal 122, determine to receive the time of data block 102.Correspondingly, write the transformation edge that strategy analysis module 120 receives in the data module 102.For example, write strategy analysis module 120 and can receive readback data 108 on the digital channel 124.Can select to be used for the parameter of reading back of digital channel 124 according to the concrete ORW or the OR device that are used for from optical storage medium 70 read datas.Attempt according to calibration before, can define the suitable setting of related parameter.In another embodiment, write strategy analysis module 120 and comprise time block 106 and/or synchronizing indicator module 104.
Subsequently, write mark and space that strategy analysis module 120 is analyzed in the training pattern of being write, as shown in Figure 6 and Figure 7.Perhaps, by the routine analyzer in the firmware that is stored in optical medium playback reproducer 50, carry out analysis to the training pattern that changes the edge and write.Writing strategy analysis module 120 (and/or firmware) upgrades according to analysis result and writes the Policy Table.
With reference now to Figure 10,, optical medium playback reproducer 50 writes exemplary training pattern 130, as shown in the figure.Training pattern 130 comprises preamble pattern 132 and master data sequence 134.Preamble pattern 132 as shown in Figure 8, and can comprise the reference pattern 136 that is dispersed between the preamble pattern 132 corresponding to synchronization pattern 100.Preamble pattern 132 is provided to allow synchronizing indicator module 104 and time block 106 the timing loop locking to be trained the forward position 136 of pattern 130 (with reference pattern 136).The end of sync mark 138 indication preamble patterns 132 and the beginning of master data sequence 134.Can form preamble pattern 132 and/or reference pattern 136 according to the minimum transition interval of optical medium playback reproducer 50 and/or optical storage medium 70.For example, for space and mark lengths, the minimum transition of the DVD of the red laser instrument of use of current standard is 3T (3 channel bit period) at interval.Those skilled in the art will appreciate that other of preamble pattern 132 and reference pattern 136 also are possible at interval.As directed, preamble pattern 132 is 3S/3M, 3S/3M, and 3S/3M ..., 3S/3M, wherein, the pattern that symbol xS/yM indication is such: it comprises that length is that space and subsequent the length of xT is the mark of yT.As directed, sync mark 138 is 10S/3M.
The master data sequence comprises the data of all possible mark of representative and space length combination.For example.The master data sequence comprises the combination according to the mark of following example table and space length:
| Pattern | Purpose |
| 3S/3M，4S/3M | The 4S/3M calibration |
| 3S/3M，3S/4M | The 3S/4M calibration |
| 3S/3M，5S/3M | The 5S/3M calibration |
| 3S/4M，3S/4M | The redundant pattern that is used for the DC balance |
| 3S/3M，4S/4M | The 4S/4M calibration |
| 3S/4M，5S/4M | The 5S/4M calibration |
| 5S/3M，3S/5M | The 3S/5M calibration |
| 4S/3M，4S/5M | The 4S/5M calibration |
| 3S/3M，5S/5M | The 5S/5M calibration |
| 6S/3M，3S/6M | The 3S/6M calibration |
| 5S/3M，4S/6M | The 4S/6M calibration |
| 4S/3M，5S/6M | The 5S/6M calibration |
| 7S/3M，3S/7M | The 3S/7M calibration |
| 6S/3M，4S/7M | The 4S/7M calibration |
| 5S/3M，5S/7M | The 5S/7M calibration |
| 8S/3M，3S/8M | The 3S/8M calibration |
| 7S/3M，4S/8M | The 4S/8M calibration |
| 6S/3M，5S/8M | The 5S/8M calibration |
| 9S/3M，3S/9M | The 3S/9M calibration |
| 8S/3M，4S/9M | The 4S/9M calibration |
| 7S/3M，5S/9M | The 5S/9M calibration |
| 10S/3M，3S/10M | The 3S/10M calibration |
| 9S/3M，4S/10M | The 4S/10M calibration |
| 8S/3M，5S/10M | The 5S/10M calibration |
| 11S/3M，3S/11M | The 3S/11M calibration |
| 10S/3M，4S/11M | The 4S/11M calibration |
| 9S/3M，5S/11M | The 5S/11M calibration |
| 12S/3M，3S/12M | The 3S/12M calibration |
| 11S/3M，4S/12M | The 4S/12M calibration |
| 10S/3M，5S/12M | The 5S/12M calibration |
| 13S/3M，3S/13M | The 3S/13M calibration |
| 12S/3M，4S/13M | The 4S/13M calibration |
| 11S/3M，5S/13M | The 5S/13M calibration |
| 14S/3M，3S/14M | The 3S/14M calibration |
| 13S/3M，4S/14M | The 4S/14M calibration |
| 12S/3M，5S/14M | The 5S/14M calibration |
Last expression model master data sequence 134, it comprise its length up to and comprise the space of 5T and length up to and comprise the mark of 14T.In other words, last table supposes that space length does not influence mark greater than 5T and forms.But, those skilled in the art will appreciate that master data sequence 134 can comprise bigger space length, for example 6T, 7T .... and/or 14T.In addition, master data sequence 134 can comprise the pattern (that is the pattern in the space of expressive notation back) of expression afterbody space length.In the present embodiment, master data sequence 134 is arranged to not have basically DC, to allow to use the AC coupling, to eliminate channel offset.As a result, simplified the processing of readback data.In another embodiment, can comprise the AC/DC coupled circuit, as the U.S. Patent application No.11/185 that July 20 in 2005 submitted, 563 is described, and this application is by reference in full in conjunction with therewith.
Master data sequence 134 can comprise the redundant pattern that is used for the DC balance, as above shown in the table.Redundant pattern is configured to and allows timing loop locking DC shifted signal.For example, redundant pattern can comprise bit patterns alternately, for example, and 1010101.Then, can eliminate the DC shifted signal.
As Fig. 8, Fig. 9 and shown in Figure 10, the transformation edge in the timing loop locking training pattern 130.In calibration process, timing loop has preferably locked minimum probabilistic transformation edge.In the present embodiment, the conversion edge of initial selected is the forward position of 3T mark, and in the readback process of 3S/3M preamble, timing loop attempts to lock the forward position of 3T mark.Like this, timing loop should be finished before detecting sync mark 138 and timely lock.
Along with the digital channel 124 of writing strategy analysis module 120 begins to handle 4S/3M and 5S/3M data in the readback process of master data sequence 134, can be historical and measured after the transformation of 3T mark for different intervals along the position.For example, according to 3S/3M, the analysis of 4S/3M pattern can be measured the back edge of the 3T mark before the 4T space.Similarly, according to 3S/3M, the analysis of 5S/3M pattern can be measured the back edge of the 3T mark before the 5T space.After these initial measurements, timing loop can lock the back edge of any 3T mark in the master data sequence, and the edge can be measured after the transformation of the remainder of data pattern.Perhaps, timing loop can keep the forward position of locking 3T mark in the whole processing of reading back, and/or locks the forward position of 3T mark with the bandwidth that reduces.According to measurement and analysis, write the Policy Table and be updated all patterns of comprising in the master data sequence 134.
In another embodiment, optical medium playback reproducer 50 can be regulated the power level of writing laser instrument (for example, from the Minimum Power Level to the maximal power level) and the timing that is used for concrete pattern, till obtaining specific desired result.For example, optical medium playback reproducer 50 can be regulated the power of writing laser instrument and the timing of the 3S/3M pattern that is used for preamble pattern 132.In this way, can determine to obtain maximum-contrast (being that peak to peak is measured) and/or required power level and the timing of optimal duty cycle (for example, 50% duty cycle).
With reference now to Figure 11 A,, the present invention can be used for high definition television machine (HDTV) 420, high definition television machine (HDTV) 420 comprises the mass data storage of one of the signal processing circuit usually represented at reference marker 422 places and/or control circuit or both, WLAN interface, HDTV 420, and/or power supply 423.The present invention also can be used for and/or be implemented in mass data storage 427.HDTV 420 receives the HDTV input signal of wired or wireless form, and produces the HDTV output signal that is used for display 426.In some embodiments, other circuit that do not illustrate among the signal processing circuit of HDTV420 and/or control circuit 422 and/or the figure can deal with data, carry out coding and/or encrypt, carry out calculate, formatted data, and/or the HDTV that carries out any other type that may require handles.
HDTV 420 can communicate by letter with mass data storage 427, and this mass data storage 427 is stored data in non-volatile mode, for example the optical memory device.HDTV420 can be connected to storer 428, for example nonvolatile memory of RAM, ROM, the low latency such as flash memory, and/or other suitable electronic data storage device structures.HDTV420 can support being connected through wlan network interface 429 and WLAN.
With reference now to Figure 11 B,, vehicle 430 comprises vehicle control system 430 and power supply 433.The present invention also can be used for and/or be implemented in the mass data storage of vehicle control system.Vehicle control system is provided with powertrain control system 432, it receives the input from one or more sensors, these sensors for example are temperature sensor, pressure transducer, rotation sensor, pneumatic sensor and/or other right sensors, and/or produce one or more output control signals, for example, engine operation parameter, transmission operating parameter and/or other control signals.
Present invention may also be embodied in the other control system 440 of vehicle 430.Control system 440 can receive the signal from input pickup 442 similarly, and/or outputs a control signal to one or more output devices 444.In some embodiments, control system 440 can be the part that anti-lock braking system (ABS), navigational system, remote information system, vehicle remote infosystem, route depart from system, adaptive cruise control system and/or vehicle entertainment system, for example, stereo, DVD, CD etc.Also it is contemplated that other embodiment.
Powertrain control system 432 can communicate by letter with mass data storage 446, and mass data storage 446 is stored data in non-volatile mode.Mass data storage 446 can comprise optical memory device and/or magnetic memory device, for example, and hard disk drive HDD and/or DVD.Powertrain control system 432 can be connected to storer 447, for example RAM, ROM, such as the low latency nonvolatile memory of flash memory, and/or other suitable electronic data storage device structures.Powertrain control system 432 can also support being connected through wlan network interface 448 and WLAN.Control system 440 can also comprise mass data storage, storer and/or WLAN interface (all not showing).
With reference now to Figure 11 C,, present invention may also be embodied in the cell phone 450, cell phone 450 can comprise cellular antenna 451.Cell phone 450 comprises: the mass data storage of one of the signal processing circuit of representing at reference marker 452 places and/or control circuit or both, WLAN interface, cell phone 450 usually, and/or power supply 453.The present invention also can be used in and/or be implemented in the mass data storage of cell phone 450.In some embodiments, cell phone 450 comprises: microphone 456, such as voice output 458/ display 460 in loudspeaker and/or voice output hole, and/or such as the input media 462 of keyboard, some optional equipment, voice actuating device and/or other input medias.Signal Processing in the cell phone 450 and/or control circuit 452 and/or other do not have the circuit that shows can deal with data, carry out coding and/or encrypt, carry out calculate, formatted data, and/or carry out cellular other functions.
With reference now to Figure 11 D,, present invention may also be embodied in the set-top box 480.Set-top box 480 comprises one of the signal processing circuit usually represented at reference marker 484 places and/or control circuit or both, LAN interface, the mass data storage of set-top box 480, and/or power supply 483.The present invention also can be used in or be implemented in the mass data storage of set-top box 480.The signal that set-top box 480 receives from the source of for example broad band source, and output is applicable to the standard audio/vision signal and/or the HD Audio/vision signal of display 488 (for example, TV, and/or monitor, and/or other video and/or audio output units).The signal Processing of set-top box 480 and/or control circuit 484 and/or other circuit can deal with data, carry out coding and/or encrypt, carry out calculate, formatted data, and/or carry out other functions of set-top box 480.
Set-top box 480 can be communicated by letter with mass data storage 490, and mass data storage 490 is stored data in non-volatile mode.Mass data storage 490 can comprise optical memory device and/or magnetic memory device, for example, and hard disk drive HDD and/or DVD.Set-top box 480 can be connected to storer 494, for example, and RAM, ROM, such as the low latency nonvolatile memory of flash memory, and/or other suitable electronic data memories.Set-top box 480 also can be supported being connected through wlan network interface 496 and WLAN.
With reference now to Figure 11 E,, the present invention can be implemented in the media player 500.Media player 500 comprises usually at one of the signal processing circuit shown in reference marker 504 places and/or control circuit or both, WLAN interface, moves the mass data storage of media player 500 and/or power supply 503.The present invention also can be used in and/or be implemented in the mass data storage of media player 500.In some embodiments, media player 500 comprises: display 507 and/or user input apparatus 508, for example, keyboard, touch pad etc.In some embodiments, media player 500 can adopt graphical user interface (GUI), and graphical user interface adopts menu, pull-down menu, icon and/or usually through the click interface of display 507 and/or user input apparatus 508.Media player 500 also comprises audio output device 509, for example loudspeaker and/or audio frequency delivery outlet.The signal Processing of media player 500 and/or control circuit 504 and/or other do not have the circuit that shows can deal with data, carry out coding and/or encrypt, carry out calculate, formatted data, and/or carry out any other function of media player.
Those skilled in the art can understand by above description, and wide in range instruction of the present invention can realize with various forms.Therefore, although described the present invention in conjunction with certain embodiments of the present invention,, real scope of the present invention so is not restricted, those skilled in the art can know other modification after having read accompanying drawing, instructions and appended claims.
Claims (20)
1. one kind is used for the tactful calibration system of writing of optical medium playback reproducer, comprises;
Storer is used for storage and writes the Policy Table;
Control module, described control module produces write signal, with according to the calibration data that is stored among the described Policy Table of writing, will train pattern to write optical storage medium; With
Write strategy analysis module, the described strategy analysis module of writing receives the read signal that indication is written to the training pattern of described optical storage medium, and adjusts described calibration data according to described read signal.
2. according to claim 1ly write tactful calibration system, wherein, described training pattern comprises preamble pattern and master data sequence, and each in described preamble pattern and the master data sequence comprises the mark and the space pattern of indicating binary data.
3. according to claim 2ly write tactful calibration system, wherein, described training pattern comprises the sync mark of the beginning of the end of indicating described preamble pattern and described master data sequence.
4. according to claim 2ly write tactful calibration system, wherein, described master data sequence comprise represent mark and space length the mark and the space pattern that might make up.
5. according to claim 2ly write tactful calibration system, wherein, described training pattern also comprises the reference pattern at least one that is dispersed in described training pattern and described master data sequence.
6. according to claim 5ly write tactful calibration system, also comprise time block, described time block obtains timely locking on the described training pattern according in described preamble pattern and the described reference pattern at least one.
7. according to claim 6ly write tactful calibration system, wherein, described time block obtains first of described reference pattern and changes timely locking on the edge.
8. according to claim 7ly write tactful calibration system, wherein, described first change the transformation forward position that the edge is described reference pattern and change the back along in one.
9. according to claim 5ly write tactful calibration system, wherein, the mark and the space pattern that form described preamble pattern are equal to described reference pattern.
10. according to claim 1ly write tactful calibration system, wherein, the described strategy analysis module of writing reads to change the edge from described training pattern.
11. according to claim 6ly write tactful calibration system, wherein, described at least one that write in strategy analysis module and the described time block regulated described timely locking selectively.
12. according to claim 6ly write tactful calibration system, wherein, the described strategy analysis module of writing comprises described time block.
13. an optical medium playback reproducer comprises the analysis of strategies system of writing according to claim 1.
14. optical medium playback reproducer according to claim 13, wherein, described optical medium playback reproducer is that CD can write down driver, CD recordable drive, DVD and can write down at least a in driver, DVD recordable drive, blue-ray DVD driver and the HD DVD driver.
15. according to claim 1ly write tactful calibration system, wherein, the described Policy Table of writing comprises the calibration data that is used for the known optical storage media types.
16. according to claim 1ly write tactful calibration system, wherein, rewrite described training pattern after the described calibration data of described optical medium playback reproducer in adjusting the described Policy Table of writing.
17. according to claim 1ly write tactful calibration system, wherein, the described Policy Table of writing is stored at least a in volatile memory and the nonvolatile memory.
18. according to claim 1ly write tactful calibration system, wherein, the described Policy Table of writing is implemented in the firmware of described optical medium playback reproducer.
19. according to claim 1ly write tactful calibration system, wherein, the described strategy analysis module of writing is communicated by letter with the firmware of described optical medium playback reproducer, to adjust described calibration data.
20. according to claim 2ly write tactful calibration system, wherein, described training pattern comprises the mark that contains with good grounds following table and the master data sequence of space combination:
Wherein, the mark of xS/yM and space combination comprise the space of length x and the mark of length y, and y and x are integers, and described training pattern also comprises the redundant pattern that is used for the DC balance.
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| US60/719,866 | 2005-09-23 | ||
| US11/337,332 US7675826B2 (en) | 2005-09-23 | 2006-01-23 | Automatic write strategy calibration method for optical drive |
| US11/337,332 | 2006-01-23 |
Publications (2)
| Publication Number | Publication Date |
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| CN1937045A true CN1937045A (en) | 2007-03-28 |
| CN1937045B CN1937045B (en) | 2010-10-06 |
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| CN2006101118453A Expired - Fee Related CN1937045B (en) | 2005-09-23 | 2006-08-25 | Automatic write strategy calibration system for optical drive |
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| JP (2) | JP2007087567A (en) |
| CN (1) | CN1937045B (en) |
| SG (1) | SG131018A1 (en) |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101911196B (en) * | 2008-01-14 | 2014-03-12 | 马维尔国际贸易有限公司 | Circuits, architectures, apparatuses, systems, algorithms and methods and software for timing calibration for optical disc recording |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| EP2887176B1 (en) * | 2013-12-20 | 2022-09-14 | The Swatch Group Research and Development Ltd. | Electronic circuit with self-calibrated PTAT current reference, and method for operating same |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0896363A (en) * | 1994-09-21 | 1996-04-12 | Toshiba Corp | Format forming method for optical information recording medium |
| JPH08167148A (en) * | 1994-12-13 | 1996-06-25 | Matsushita Electric Ind Co Ltd | Device and method for optically recording/reproducing |
| JP3773991B2 (en) * | 1996-07-30 | 2006-05-10 | 株式会社日立製作所 | Information recording medium |
| JP3076033B1 (en) * | 1998-09-14 | 2000-08-14 | 松下電器産業株式会社 | Optical information recording / reproducing apparatus and information recording medium |
| WO2001011614A1 (en) * | 1999-08-09 | 2001-02-15 | Hitachi, Ltd. | Trial writing method and optical disk system using the same |
| US6343341B1 (en) * | 1999-08-20 | 2002-01-29 | Microsoft Corporation | Efficient access to variable-length data on a sequential access storage medium |
| JP2001135029A (en) * | 1999-11-05 | 2001-05-18 | Sanyo Electric Co Ltd | Recording method for optical disk |
| KR100567515B1 (en) * | 2001-04-27 | 2006-04-03 | 마쯔시다덴기산교 가부시키가이샤 | Recordable optical disc, optical disc recording apparatus, optical disc reproduction apparatus, and method for recording data onto recordable optical disc |
| JP2003109222A (en) * | 2001-09-28 | 2003-04-11 | Hitachi-Lg Data Storage Inc | Rewritable type optical information recording/ reproducing device, and recording/reproducing method |
| JP3855258B2 (en) * | 2001-11-15 | 2006-12-06 | ソニー株式会社 | Disk unit |
| WO2005008646A1 (en) * | 2003-06-25 | 2005-01-27 | Matsushita Electric Industrial Co., Ltd. | Device and method for recording data onto recordable optical disc |
| TWI227881B (en) * | 2003-11-20 | 2005-02-11 | Via Tech Inc | Method, optical disk drive and calibration system for modifying a 2T write strategy to improve recording quality |
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2006
- 2006-08-25 TW TW95131325A patent/TWI395210B/en not_active IP Right Cessation
- 2006-08-25 CN CN2006101118453A patent/CN1937045B/en not_active Expired - Fee Related
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101911196B (en) * | 2008-01-14 | 2014-03-12 | 马维尔国际贸易有限公司 | Circuits, architectures, apparatuses, systems, algorithms and methods and software for timing calibration for optical disc recording |
Also Published As
| Publication number | Publication date |
|---|---|
| SG131018A1 (en) | 2007-04-26 |
| JP5437332B2 (en) | 2014-03-12 |
| JP2007087567A (en) | 2007-04-05 |
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| TW200717486A (en) | 2007-05-01 |
| CN1937045B (en) | 2010-10-06 |
| TWI395210B (en) | 2013-05-01 |
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