TWI395210B - Write strategy calibration system and optical media playback device comprising the same - Google Patents

Description

Write strategy calibration system and optical media replay device including the same

The present invention relates to optical media replay devices and media, and more to calibration techniques for writing strategies to optical media.

Optical discs (CDs) and optical media of digital audio and video discs (DVDs) are used to store optically read data. The optical discs usually include a substrate made of plastic and a reflective/non-reflective cross-layer, in which reflection/non-reflection is performed. The stack includes a continuous spiral track for encoding the material. In operation, the optical media replay device transmits the laser to the track to read the data, and an optical sensor receives the light reflected from the encoded data on the track.

Referring now to Figure 1, a single recordable optical disc 10 (e.g., recordable disc/CD-R and/or recordable DVD/DVD+/-R) typically includes a polycarbonate plastic substrate 12, a dye layer 14, and A reflective metal layer 16 wherein the reflective metal layer 16 can comprise an aluminum layer. When the optical disc 10 is blank, the dyed layer 14 is transparent, from which light is transmitted and reflected on the reflective metal layer 16. When a laser is used to perform a writing operation on the optical disk 10, the selected portion of the dyed layer 14 is heated by laser light of a specific intensity and frequency, and the selected portion becomes opaque at this time, and the opaque portion does not reflect light. The reflective portion is referred to as a "mark". Conversely, the transparent reflective portion of the dyed layer is referred to as a "space." The optical media reproducing apparatus may include a readout laser that reads data from the optical disc 10 and a write laser that changes the dyed layer 14 for recording.

During the reading process, the optical disc is rotated by an optical media reproducing device, which typically includes at least one laser, a spindle motor, and a light sensor. In operation, the spindle motor rotates the optical medium, the laser is directed onto the track of the optical medium, and the optical sensor is used to measure the reflected light. When the optical sensor produces a high current level corresponding to high reflectivity (ie, space), the data at this time can be translated as "1" (or "0"). When the optical sensor produces a low current level corresponding to a low reflectance (ie, a mark), the data at this time can be translated as "0" (or "1"). In some devices, the space/marker signal is commonly referred to as a converted flip-non-return-to-zero (NRZI) signal, which can be converted to a non-return-to-zero (NRZ) signal, with a "1" for transition and a "0" for no transition. ,as shown in picture 2.

Referring to FIG. 3, an exemplary rewritable optical disc 20 (such as a rewritable optical disc/CD-RW and/or a rewritable DVD/DVD +/- RW) generally includes a polycarbonate plastic substrate 22, an electrical media layer. 24. A phase change compound layer 26 and a reflective metal layer 28. The phase change compound layer 26 may be a chemical compound such as silver, ruthenium, osmium, and/or indium. A laser is used to heat the compound to above the crystallization temperature and/or melting temperature. When the compound is rapidly cooled above the melting temperature, the compound remains in a liquid rather than a crystalline state, at which point a non-reflective portion (i.e., a mark) is formed. Conversely, when the temperature of the compound is maintained at the crystallization temperature for a certain length of time, the compound becomes solid before cooling down, resulting in a reflective portion (i.e., a space). Accordingly, the optical media replay device can include, in addition to a readout laser, a write laser and an erase laser, wherein the power of the write laser is sufficient to heat the compound above the melting temperature and erase the thunder. The power of the shot is sufficient to heat the compound above the crystallization temperature.

In a single recordable disc or rewritable disc application, the writing process is non-linear. The above-mentioned markings (and spaces in rewritable optical disc applications) are established by focusing heating of the writing laser and/or erasing laser, and thermal diffusion and phase change problems occur in the high-speed rotating optical disc.

Referring now to Figures 4A through 4D, a laser power distribution pattern 30 required for writing to a single recordable medium such as a DVD +/- R medium is shown therein. To form a mark 32 beginning at the track position t, a pulse 34 starting at the track position t-y is provided; to end the mark 32 at the track position u, the pulse 34 is at the track position u-x Termination; in other words, the adjustment of the laser power 30 is offset from the ideal position of the marker 32 due to the non-linear result of thermal diffusion. There may be many factors affecting the position offsets y and x (corresponding to pulse timing edges 36 and 38, respectively), including but not limited to laser power 30, media type and/or write speed.

Referring now to Figures 5A and 5B, a typical laser power distribution pattern 40 required for writing rewritable media such as DVD+/-RW media is shown therein. The write pulse 42 is greater than the cooling power level 44 and the erase power level 46. Similar to the laser distribution pattern 30 shown in Figures 4A through 4D, the pulse 42 begins before the ideal initial position t of the marker 48 and terminates before the ideal end position u of the marker 48.

Since thermal-based optical media writing has non-linear characteristics, calibration of various power levels and pulse timing edges must be based on the length of each ideal mark (ie, on the basis of each mark length) and also with the mark Adjacency and the leading and trailing spaces on either side of the tag are related. In the coding scheme used in current optical media recording standards, the length of the marks and spaces can range from 3T to 14T, where T is the channel bit period.

The entry in a write strategy table on the optical drive stores how a particular mark length is formed. In other words, since the recording process is non-linear, the write strategy table includes the laser power, pulse timing edge, and other relevant data for each mark length. Generally, the write strategy table is stored in a non-volatile memory module on the optical drive, such as a flash memory module.

Building a write strategy table typically requires a calibration sequence that is related to the type of media (such as the manufacturer of the media) and the write speed, and is performed by the manufacturing process of each optical media playback device. In addition, the calibration sequence includes data describing all available media types available to potential users of the optical media playback device and stored on the non-volatile memory module.

However, when a media manufacturer introduces a new media type, the new write policy table must be updated, at which point the user is able to download (eg, from the Internet) a new carcass including the manufacturer's updated write strategy table. The way to achieve this. When the Internet is not available, users can get updated CDs from the manufacturer via email. In some cases, users may inadvertently obtain fake media or substandard media that the original write policy table could not write correctly. Therefore, more updates from the drive manufacturer will not solve the write problems that result. In addition, consumers often purchase optical media replay devices for DVD drives, but they also want to operate the drives with inexpensive media. Many consumers return the drive to the store when it is found that the drive is not properly writing or reading the media, which increases the cost of the drive manufacturer.

A write strategy calibration system for an optical media replay device includes a memory for storing a write strategy table. A control module generates a write signal to write a training model to an optical storage medium based on the calibration data stored in the write strategy table. The write strategy analysis module receives a read signal representing the training model that is written to the optical storage medium, and adjusts the calibration data according to the read signal.

In other features of the invention, the training model includes a preamble model and a master data sequence, the preamble model and the master data sequence each including a mark and a space model representing the binary data. The training model further includes a synchronization flag indicating the end of the preamble model and the beginning of the main data sequence. The master data sequence includes a combination of all possible marks and space lengths indicating the length of the mark and space. The training model includes a reference model dispersed in at least one of the training model and the master data sequence.

In other features of the present invention, a timing module obtains a timing lock on the training model according to at least one of the preamble model and the reference model, and obtains a first transition edge on one of the reference models. Timing lock, wherein the first transition edge is one of a transition leading edge and a transition trailing edge of the reference model. A mark and space model forming the preamble model is equivalent to the reference model. The write strategy analysis module reads the transition edge from the training model. At least one of the write strategy analysis module and the timing module selectively adjusts the timing lock. The write strategy analysis module includes the timing module.

In other features of the invention, an optical media playback device includes the write strategy calibration system. The optical media playback device is at least a recordable optical disc drive, a CD rewritable drive, a digital versatile compact disc (DVD) recordable drive, a rewritable DVD drive, a Blu-ray DVD drive, and a high density (HD) DVD drive. One. The write strategy table includes calibration data for each known optical storage media type. The optical media replay device rewrites the training model after adjusting the calibration data in the write strategy table. The write strategy table is stored in at least one of the volatile memory and the non-volatile memory. The write strategy table is implemented in the body of the optical media replay device. Write the strategy analysis module and the optical media replay device's carcass communication to adjust the calibration data.

In other features of the invention, the training model includes a signature of the main data sequence and a combination of spaces as shown in the following table: Wherein, a mark and space combination of xS/yM includes a space of length x and a mark of length y (x and y are integers), and the training model further includes the idle balance model for DC balance.

From the reading of the following detailed description, it will be readily apparent that the invention can be used in other fields of application. It is understood that the detailed description of the preferred embodiments of the present invention

One or more of the following descriptions are merely exemplary and are not intended to limit the invention, its application and use. For the sake of clarity, the same reference numbers are used in the drawings to identify similar elements. The modules, circuits, and/or devices described herein are specialized application integrated circuits (ASICs), electronic circuits, processors that execute one or more software or firmware (shared processors, dedicated processors). Or processor group) and memory, combinatorial logic, and/or other components suitable for providing the described functionality. The phrase "at least one of A, B, and C" as used herein shall be interpreted as the logic (A or B or C) using XOR. It is to be understood that the steps in the method of the present invention can be carried out in a different order, and the principles of the invention are not changed.

The optical media replay device of the present invention is suitable for a variety of recordable and/or rewritable media types without relying on manufacturer or firmware updates. As sales increase and product repair rates are reduced, consumer satisfaction can be increased and manufacturers' profits can be increased.

More specifically, the present invention is capable of automatically calibrating a write strategy table stored on an optical media playback device. The optical media replay device accurately controls the write strategy laser pulses and accurately measures the data written by the write laser. In the current optical media storage technology, the write strategy pulse has been accurately controlled on several generations of products, but conventionally there is still no integrated circuit or module that performs the functions of writing and accurate measurement, although the waveform is read back. Accurate measurements can be done with expensive instruments (such as high-speed digital oscilloscopes), but this is limited to use in factories, laboratories, or other high-cost manufacturing environments.

Referring now to Figure 6, there is shown a functional block diagram of an optical media playback device 50 including a write strategy table, which may be a digital video disc (DVD) system or the like. The optical media playback device 50 includes a DVD printed circuit board (PCB) 52 in the drawing, the PCB 52 including a buffer 54 for storing read data, writing data, and/or with an optical media playback device. 50 control related volatile control code. Buffer 54 can be a volatile memory such as SDRAM or other type of low latency memory. The non-volatile memory 55 can be a flash memory that can be used to store key data, such as data associated with DVD write formats and/or other non-volatile control codes. The processor 56 disposed on the DVD PCB 52 performs data and/or control processing associated with the operation of the optical media playback device 50 and also performs copy protection decoding and/or compression/decompression operations as necessary. The DVD control module 58 communicates with the input/output interface 60 and the spindle/feed motor (FM) driver 62 and/or the read/write channel module 64. The DVD control module 58 directs control of the spindle/FM driver 62, the read/write channel module 64, and the processor 56, and also directs the logging/outputting of the data via the interface 60.

During a write operation, the read/write channel module 64 encodes the DVD disc material to be written by the optical read/write (ORW) or optical read only (OR) device 66. The read/write channel module 64 processes the signals for reliability and can be error corrected and corrected (ECC) encoded and run length limited (RLL) encoded. During a read operation, the read/write channel module 64 converts the analog output of the ORW or OR device 66 into a digital signal that is detected and decoded by known techniques to restore the write to the DVD. data of.

The DVD component (DVDA) 68 includes an optical storage medium 70 that optically stores data, such as a DVD disc or the like. The optical storage medium 70 is rotationally driven by a spindle motor that is illustrated as indicated by reference numeral 71 and that rotates the optical storage medium 70 at a controlled and/or variable speed during a read/write operation. The ORW or OR device 66 moves relative to the optical storage medium 70 to write data to/from the optical storage medium 70 and/or to read data from the optical storage medium 70. The ORW or OR device 66 typically includes a laser and an optical sensor.

In the case of a DVD read/write system and a DVD-reading system, the laser is directed to a track on the optical storage medium 70 during a read operation, and the optical sensor senses reflections caused by the platform/pit. For DVD read/write (RW) applications, the laser can also be used to heat the dyed layer on the optical storage medium 70 during operation.

Spindle/FM driver 62 controls spindle motor 71 to rotate optical storage medium 70 in a controlled manner and also generates control signals to position the feed motor with a voice coil actuator, stepper motor or any other suitable actuator 72. The feed motor 72 typically moves the ORW or OR device 66 radially relative to the optical storage medium 70, and the laser driver 73 produces a laser drive signal based on the output of the read/write channel module 64. The DVDA 68 includes a preamplifier circuit 74 that amplifies the analog read signal. When reading data, the preamplifier circuit 74 amplifies the low level signal of the ORW or OR device 66 and outputs the amplified signal to the read/write channel module 64.

Optical media playback device 50 also includes a codec module 75 that encodes and/or decodes video material in any MPEG format. The audio and/or video digital signal processors and/or modules 76 and 77 perform audio and/or video signal processing operations, respectively.

Portions of optical media playback device 50 may be in the form of one or more integrated circuits (ICs) or wafers, such as processor 56 and DVD control module 58 may be constructed using a single wafer. The spindle/FM driver 62 and/or the read/write channel module 64 may also be present on the same wafer as the processor 56 or the DVD control module 58, or may be formed from additional wafers. In addition to the DVDA 68, most optical media playback devices 50 can also take the form of SOCs.

The optical media playback device 50 stores and dynamically updates a write strategy table. For example, the optical media playback device 50 can store the write strategy table in the volatile memory 54 and/or the non-volatile memory 55. The write strategy table includes calibration data, and the optical media playback device 50 writes the optical storage medium 70 based on the calibration data stored in the write strategy table (via the read/write channel module 64 and/or the laser driver 73). The optical media playback device 50 updates the calibration data stored in the write strategy table according to the actual type of optical storage medium 70 used, so that the update of the calibration data does not need to be initiated externally.

To update the write strategy table, the optical media playback device 50 writes a training model to the optical storage medium 70 in accordance with an initial write strategy, wherein the training model can include data representing all possible combinations of markers and space lengths. The initial write strategy may include laser power or other data for each known type of optical medium, such as an initial write strategy for a known media type may be stored in a cartridge (eg, non-volatile memory 55) and/or In the optical storage medium 70. For an unknown media type, the initial write strategy can be extrapolated, such as the initial write strategy can be a default write strategy stored in the body and/or a previously used write strategy.

The optical media playback device 50 then reads back the written training model from the optical storage medium 70 (via the ORW or OR device 66 and/or the read/write channel module 64). The optical media playback device 50 analyzes the training model to determine if the length and location of the markers and spaces correspond to the desired length and location of the model. In other words, the optical media playback device 50 determines the offset distance of the markers and spaces from the desired locations. Based on the offset distances, the optical media playback device 50 adjusts the write strategy table to gradually correct the calibration data. For example, the optical media playback device 50 can adjust the write strategy table to reflect whether the originally written mark is too long or too short based on the initial policy.

The optical media playback device 50 writes the training model to the optical storage medium 70 based on the updated write strategy table and reads out the written training model for analysis. The optical media playback device 50 repeats the process until the write strategy is determined to be acceptable.

Referring now to Figure 7, the automatic write strategy calibration method 80 begins at step 82. In step 84, the optical media playback device 50 implementing method 80 is powered. In step 86, the optical media playback device 50 writes a training model to the optical storage medium 70. In step 88, the optical media playback device 50 reads the written training model from the optical storage medium 70. In step 90, optical media playback device 50 analyzes the written training model to determine the offset of the data. In step 92, the optical media playback device 50 determines whether the written training model is acceptable based on the offset; if so, the method 80 proceeds to step 94; if not, the method 80 proceeds to step 96.

In step 94, the optical media playback device 50 continues normal operation. For example, the optical media playback device 50 can write the data to the optical storage medium 70 according to the current write strategy table, and continue to operate until the power is interrupted at step 98. And/or until a new optical storage medium 70 is present.

In step 96, optical media playback device 50 adjusts the write strategy table based on an analysis of the written training model. Method 80 then proceeds to step 86. In this manner, method 80 continues to adjust the write strategy table and analyze the resulting training model until an acceptable write strategy is found.

Referring now to Figures 8 and 9, the operation of optical media playback device 50 is described in greater detail. The data stored on the optical storage medium 70 typically includes alternating synchronization models 100 and data blocks 102, wherein the synchronization model 100 is used to identify the data blocks 102. In other words, the optical media playback device 50 must be able to identify the location of the synchronization model 100 so that the corresponding data block 102 can be correctly read.

The optical media playback device 50 can include a synchronization detector module 104 and a timing module 106. For example, the sync detector module 104 and/or the timing module 106 can be located in the read/write channel module 64, the DVD control module 58, and/or other locations on the DVD PCB 52 as shown in FIG. . The sync detector module 104 is used to identify the sync model 100, i.e., it receives the read data 108 read from the optical storage medium 70 and identifies transition edges in the sync model 100. The timing module 106 generates a timing signal 110 for the synchronous detector module 104 and/or other modules in the optical media playback device 50. The synchronous detector module 104 generates a timing error signal 112 to adjust the timing module 106. Timing loop. In this way, the timing loop can lock the transition edges in the written model, such as the lockable transition leading edge and/or trailing edge.

The optical media playback device 50 also includes a write strategy analysis module 120 that can be located in the read/write channel module 64, the DVD control module 58, and/or other locations on the DVD PCB 52 as shown in FIG. Wait. The write strategy analysis module 120 receives the sync detection signal 122 from the sync detector module 104, the read back data 108, and the timing signal 110 from the timing module 106. The write strategy analysis module 120 determines the time at which the data block 102 was received based on the synchronization detection signal 122. Correspondingly, the write strategy analysis module 120 receives the transition edge in the data module 102, such as the readback data 108 on the digital channel 124. The readback parameters required for the digital channel 124 can be selected based on the particular ORW or OR device that reads the data from the optical storage medium 70, which parameters can be appropriately set according to previous calibration attempts. In another embodiment, the write strategy analysis module 120 includes a timing module 106 and/or a synchronization detector module 104.

Subsequently, the write strategy analysis module 120 analyzes the marks and spaces in the written training model (as shown in FIGS. 6 and 7), or performs an analysis through an analysis program stored in the body of the optical media playback device 50. Transform the edge and analyze the training model written. Next, the write strategy analysis module 120 (and/or the body) updates the write strategy table based on the analysis result.

Referring now to FIG. 10, optical media playback device 50 writes an exemplary training model 130 as shown, wherein training model 130 includes a preamble model 132 and a master data sequence 134. The preamble model 132 corresponds to the synchronization model 100, as shown in FIG. 8, and may include a reference model 136 that is dispersed between the preamble models 132. The preamble model 132 is provided to allow the synchronous detector module 104 and the timing module 106 to cause the timing loop to lock the leading edge 136 of the training model 130 (and reference model 136). Synchronization flag 138 indicates the end of preamble model 132 and the beginning of master data sequence 134. The formation of the preamble model 132 and/or the reference model 136 may be based on the minimum transition interval of the optical media playback device 50 and/or the optical storage medium 70, such as the current standard for red-lighted DVDs for spaces and mark lengths. The minimum transition interval between the two is 3T (3-channel bit period). Those skilled in the art will appreciate that the preamble model 132 and the reference model 136 may have other intervals. As shown, the preamble model 132 is 3S/3M, 3S/3M, 3S/3M, ..., and 3S/3M, wherein the model referred to by the symbol xS/yM is a space including a length of xT and thereafter. The tag of length yT, as shown, sync tag 138 is 10S/3M.

The master data sequence 134 includes data representing a combination of all possible markers and space lengths, as may include a combination of the labels and space lengths included in the following exemplary tables:

The above table is an example of a primary data sequence 134 that includes spaces as long as 5T and markers as long as 14T. In other words, the above table assumes that the length of the space is greater than 5T and does not affect the formation of the mark. However, those skilled in the art will appreciate that the master data sequence 134 can include a larger space length, such as 6T, 7T, . . . , and/or 14T. In addition, the master data sequence 134 can include a model that represents the length of the trailing space (ie, a model that represents the space after the mark). In the present embodiment, the main data sequence 134 is set to have substantially no DC component present to allow the use of AC coupling to eliminate channel offset problems, so the processing of reading back data is simplified. In another embodiment, an AC/DC coupling circuit can be added as described in U.S. Patent Application Serial No. 11/185,563, filed on Jul. 20, 2005, which is incorporated herein in For reference.

The master data sequence 134 can include an idle model for use as a DC balance, as shown in the above table. The idle model is set to enable the timing loop to lock on the DC offset signal, such as an alternate bit model such as 1010101, to eliminate the DC offset signal.

As shown in Figures 8, 9, and 10, the timing loop locks the transition edges in the training model 130. During the calibration process, it is preferred that the locking of the timing loop be the transition edge with the least uncertainty. In this embodiment, the initially selected transition edge is the leading edge of the 3T mark, and the timing loop attempts to lock the leading edge of the 3T mark during the resume of the 3S/3M preamble, and the timing loop should be detecting the synchronization mark 138. This timing locking work was completed before.

When the digital channel 124 of the write strategy analysis module 120 begins processing 4S/3M and 5S/3M data during the readback of the master data sequence 134, the 3T mark transition trailing edge positions of the different past intervals can be measured. For example, the trailing edge of the 3T mark before the 4T space can be measured based on the analysis of the 3S/3M and 4S/3M models. Similarly, the trailing edge of the 3T mark before the 5T space can be measured based on the analysis of the 3S/3M and 5S/3M models. After these initial measurements, the timing loop locks the trailing edge of all 3T markers in the master data sequence, and the transition trailing edge of the rest of the data model can also be measured, or the sequential loop can continue to lock 3T throughout the readback process. Mark the leading edge and/or lock the leading edge of the 3T mark with a reduced bandwidth. The write strategy table can be updated based on measurements and analysis of all models included in the master data sequence 134.

In another embodiment, the optical media playback device 50 can adjust and time the power level and timing of the write laser used by the particular model until a particular desired result is obtained, such as from a minimum power level to a maximum power. Level. For example, optical media playback device 50 can adjust the power and timing of the write lasers used by the 3S/3M model of preamble model 132. In this way, the power level and timing for maximum contrast (ie, peak-to-peak measurement) and/or optimal duty cycle (eg, 50% duty cycle) can be determined.

Referring now to FIG. 11A, the present invention can be implemented in a high resolution television (HDTV) 420 that includes either or both of signal processing and/or control circuitry (denoted by 422), a WLAN interface, and an HDTV 420. A large number of data storage devices and/or power supplies 423. The invention may also be used and/or implemented in a plurality of data storage devices 427. The HDTV 420 receives HDTV input signals in a wired or wireless format and produces an HDTV output signal for display 426. In some implementations, the signal processing circuitry and/or control circuitry 422 and/or other circuitry (not shown) of the HDTV 420 can process data, perform encoding and/or encryption, perform calculations, format data, and / or perform any other HDTV processing type required.

The HDTV 420 can communicate with a large number of data storage devices 427 that store data in a non-volatile manner, and can be connected to low latency non-volatile memory such as RAM, ROM, flash memory, and/or other suitable electronic data storage devices. Equal memory 428. In addition, HDTV 420 can also support connection to WLAN via WLAN network interface 429.

Referring now to Figure 11B, the vehicle 430 includes a vehicle control system and a power supply 433. The present invention is implemented in a plurality of data storage devices of the control system of the vehicle 430. In some implementations, the present invention implements a transmission control system 432 that receives input from one or more sensors 436 and/or generates one or more output control signals 438, which may be temperature a sensor, a pressure sensor, a rotational sensor, a gas flu detector, and/or any other suitable sensor, the output control signal being engine operating parameters, transmission operating parameters, and/or other controls signal.

The present invention may also be implemented in other control systems 440 of the vehicle 430, where the control system 440 may also receive input from the input sensor 442 and/or output control signals to one or more output devices 444. In some implementations, control system 440 can be an anti-lock brake system (ABS), a navigation system, a remote information processing system, a vehicle remote information processing system, a lane departure system, an adaptive cruise control system, and a stereo. There are still other implementations of vehicle entertainment systems such as audio systems, DVDs, and compact disc devices.

The transmission control system 432 can be in communication with a plurality of data storage devices 446 that store data in a non-volatile manner, wherein the plurality of data storage devices 446 can include optical and/or magnetic storage devices such as hard disk drives HDD and/or DVD, for example. The powertrain control system 432 can be coupled to a memory 447, such as a low latency non-volatile memory such as RAM, ROM, flash memory, and/or other suitable electronic data storage device. In addition, the powertrain control system 432 can also support connection to the WLAN via the WLAN network interface 448. The control system 440 can also include a number of data storage devices, memory, and/or WLAN interfaces (none of which are shown).

Referring now to Figure 11C, the present invention can be implemented in a mobile telephone 450 that includes a mobile antenna 450 that includes either or both of signal processing and/or control circuitry (denoted by 452), WLAN interface, action A large number of data storage devices and/or power supplies 453 of the telephone 450. The present invention can also be used and/or implemented in a large number of data storage devices of the mobile phone 450. In some implementations, the mobile phone 450 includes an audio output device 458 such as a microphone 456, a speaker and/or an audio output jack, a display 460 and/or a keypad, a pointing device, sound actuation, and/or other inputs. Device 462. Signal processing and/or control circuitry 452 and/or other circuitry (not shown) in mobile telephone 450 may process data, perform encoding and/or encryption, perform calculations, format data, and/or perform other mobile phones. Features.

The mobile phone 450 can communicate with a plurality of data storage devices 464 that store data in a non-volatile manner, which can be optical and/or magnetic storage devices such as a hard disk drive HDD and/or DVD. The mobile phone 450 can be coupled to a memory 466, such as a low latency non-volatile memory such as RAM, ROM, flash memory, and/or other suitable electronic data storage device. In addition, the mobile phone 450 can also support connection to the WLAN via the WLAN network interface 468.

Referring now to Figure 11D, the present invention can be implemented in a set-top box 480 that includes either or both of signal processing and/or control circuitry (indicated by 484), a WLAN interface, and an on-board box. A large data storage device and/or power supply 483 of 480. The invention may also be used and/or implemented in a plurality of data storage devices of the set-top box 480. The set-top box 480 receives signals from sources such as broadband sources and outputs standard and/or high-resolution audio/video signals suitable for display 488, which may be televisions and/or monitors and/or other video and/or Or audio output device. Signal processing and/or control circuitry 484 and/or other circuitry (not shown) in set-top box 480 can process data, perform encoding and/or encryption, perform calculations, format data, and/or perform any other Set-top box function.

The set-top box 480 can communicate with a plurality of data storage devices 490 that store data in a non-volatile manner, wherein the bulk data storage device 490 can include optical and/or magnetic storage devices, such as a hard disk drive HDD and/or DVD. The set-top box 480 can be connected to a memory 494, such as a low latency non-volatile memory such as RAM, ROM, flash memory, and/or other suitable electronic data storage device. In addition, the set-top box 480 can also support connection to the WLAN via the WLAN network interface 496.

Referring now to FIG. 11E, the present invention can be implemented in a media player 500 that includes either or both of signal processing and/or control circuitry (indicated by 504), a WLAN interface, a media player. A large number of data storage devices and/or power supplies 513 of 500. The invention may also be used and/or implemented in a plurality of data storage devices of the media player 500. In some implementations, media player 500 includes a display 507 and/or a user input device 508 such as a keypad and touch pad. In some implementations, the media player 500 can employ a graphical user interface (GUI) for the menus, pull-down menus, icons, and/or pointing-and-click interfaces via the display 507 and/or the user input device 508. The media player 500 also includes an audio output device 509, such as a speaker and/or audio output jack. Signal processing circuitry and/or control circuitry 504 and/or other circuitry (not shown) of media player 500 may process data, perform encoding and/or encryption, perform calculations, format data, and/or perform any other Media player features.

The media player 500 can communicate with a plurality of data storage devices 510 that store content such as compressed audio and/or video in a non-volatile manner. In some implementations, the compressed audio file includes an MP3 format or other suitable compressed audio and/or video format file, and the mass data storage device can include optical and/or magnetic storage devices, such as a hard disk drive HDD and/or DVD. The media player 500 can be coupled to a memory 514, such as a low latency non-volatile memory such as RAM, ROM, flash memory, and/or other suitable electronic data storage device. In addition, the media player 500 can also support connection to the WLAN via the WLAN network interface 516.

From the above description, those skilled in the art will appreciate that the broad teachings of the invention can be implemented in various forms. Therefore, although the present invention has been described in connection with the specific embodiments of the present invention, the true scope of the present invention is not limited thereto, and those skilled in the art can read the drawings, the description, and the scope of the appended claims. Be aware of other modifications.

The present application claims priority to U.S. Provisional Application No. 60/719,866, filed on Sep. 23, 2005, the disclosure of which is hereby incorporated by reference.

10. . . Single recordable disc

12. . . Base

14. . . Dyed layer

16. . . Reflective metal layer

20. . . Rewritable disc

twenty two. . . Base

twenty four. . . Electrical media layer

26. . . Phase change compound layer

28. . . Reflective metal layer

30. . . Laser power distribution pattern

32. . . mark

34. . . pulse

36. . . Pulse timing edge

38. . . Pulse timing edge

40. . . Laser power distribution pattern

42. . . Write pulse

44. . . Cooling power level

46. . . Erase power level

48. . . mark

50. . . Optical media replay device

52. . . Printed circuit board (PCB)

54. . . buffer

55. . . Non-volatile memory

56. . . processor

58. . . Digital audio and video disc control module

60. . . Input/output interface

62. . . Spindle/feed motor driver

64. . . Read/write channel module

66. . . Optical read/write device

68. . . Digital audio and video disc assembly

70. . . Optical storage medium

71. . . Reference mark

72. . . Feed motor

73. . . Laser driver

74. . . Preamplifier circuit

76. . . Audio digital signal processor and/or module

75. . . Codec module

77. . . Video digital signal processor and/or module

80. . . method

82. . . step

84. . . step

86. . . step

88. . . step

90. . . step

92. . . step

94. . . step

96. . . step

98. . . step

100. . . Synchronization model

102. . . Data block

104. . . Synchronous detector module

106. . . Timing module

108. . . Read data

110. . . Timing signal

112. . . Timing error signal

120. . . Write strategy analysis module

122. . . Synchronous detection signal

124. . . Digital channel

130. . . Training model

132. . . Preamble model

134. . . Master data sequence

136. . . Reference model

138. . . Sync mark

422. . . Signal processing and / or control circuit

420. . . High resolution TV

423. . . Power Supplier

428. . . Memory

427. . . Large data storage device

430. . . vehicle

433. . . Power Supplier

432. . . Transmission control system

436. . . Sensor

438. . . Output control signal

440. . . Control System

442. . . Input sensor

444. . . Output device

446. . . Large data storage device

447. . . Memory

448. . . WLAN network interface

450. . . mobile phone

451. . . Mobile antenna

452. . . Signal processing and / or control circuit

453. . . Power Supplier

456. . . microphone

458. . . Audio output device

460. . . monitor

462. . . Input device

464. . . Large data storage device

466. . . Memory

468. . . WLAN network interface

480. . . Set-top box

483. . . Power Supplier

484. . . Signal processing and / or control circuit

488. . . monitor

490. . . Large data storage device

496. . . WLAN network interface

494. . . Memory

500. . . media Player

507. . . monitor

504. . . Signal processing and / or control circuit

508. . . User input device

509. . . Audio output device

510. . . Large data storage device

513. . . Power Supplier

514. . . Memory

516. . . WLAN network interface

The invention will be better understood by the following detailed description in conjunction with the accompanying drawings in which: FIG. 1 is a cross-sectional view of a conventional single-recordable optical disc; FIG. 2 is an example of a mark/space and an optical reproducing apparatus reading optical FIG. 3 is a cross-sectional view of a conventional rewritable optical disc; FIG. 4A is an explanatory view showing a first laser power distribution for writing a single recordable optical medium; 4B is an explanatory diagram of a conventional second laser power distribution for writing a single recordable optical medium; FIG. 4C is an illustration of a conventional third laser power distribution for writing a single recordable optical medium. Figure 4D is an explanatory diagram of a conventional fourth laser power distribution for writing a single recordable optical medium; Figure 5A is a conventional first laser power for writing a single rewritable optical medium. FIG. 5B is an explanatory diagram of a conventional second laser power distribution for writing a single rewritable optical medium; FIG. 6 is an optical media reproducing apparatus including a write strategy table according to the present invention; Function block 7 is a schematic diagram of an automatic write strategy calibration method of the present invention; FIG. 8 is a schematic diagram of an alternate synchronization model and data block of the present invention; and FIG. 9 is an example of an optical media playback apparatus including a write strategy analysis module of the present invention; FIG. 10 is a functional block diagram of a high resolution television set; FIG. 11B is a functional block diagram of a vehicle control system; FIG. 11B is a functional block diagram of a vehicle control system; Functional block diagram; FIG. 11D is a functional block diagram of a set-top box; and FIG. 11E is a functional block diagram of a media player.

50. . . Optical media replay device

70. . . Optical storage medium

104. . . Synchronous detector module

106. . . Timing module

108. . . Read data

110. . . Timing signal

112. . . Timing error signal

120. . . Write strategy analysis module

122. . . Synchronous detection signal

124. . . Digital channel

Claims (18)

A write strategy calibration system for an optical media replay device includes: a memory for storing a write strategy table; and a control module for generating a write signal for storage in the write strategy table The calibration data writes a training model to the optical storage medium; and a write strategy analysis module receives a read signal indicating a training model written to the optical storage medium, and adjusts the read signal according to the read signal Calibration data, wherein the training model includes a preamble model and a master data sequence, the preamble model and the master data sequence each including a mark and space model indicating binary data, and wherein the training model further includes a reference The model is dispersed in at least one of the training model and the master data sequence. The write strategy calibration system of claim 1, wherein the training model includes a synchronization flag to indicate the end of the preamble model and the beginning of the master data sequence. The write strategy calibration system of claim 1, wherein the master data sequence includes a mark and a space model to represent all possible combinations of marks and space lengths. The write strategy calibration system of claim 1, further comprising a timing module, wherein the timing module obtains a timing lock on the training model according to at least one of the preamble model and the reference model . The write strategy calibration system of claim 4, wherein the timing module obtains a time on a first transition edge of the reference model Order lock. The write strategy calibration system of claim 5, wherein the first transition edge is one of a transition leading edge and a transition trailing edge of the reference model. The write strategy calibration system of claim 1, wherein one of the preamble model forms a mark and a space model is equivalent to the reference model. The write strategy calibration system of claim 1, wherein the write strategy analysis module reads the transition edge from the training model. The write strategy calibration system of claim 4, wherein at least one of the write strategy analysis module and the timing module selectively adjusts the timing lock. The write strategy calibration system of claim 4, wherein the write strategy analysis module comprises the timing module. The write strategy calibration system of claim 1, wherein the write strategy table includes calibration data of a known optical storage medium type. The write strategy calibration system of claim 1, wherein the optical media replay device rewrites the training model after adjusting the calibration data in the write strategy table. The write strategy calibration system of claim 1, wherein the write strategy table is stored in at least one of a volatile memory and a non-volatile memory. The write strategy calibration system of claim 1, wherein the write strategy table is implemented in a body of the optical media playback device. The write strategy calibration system of claim 1, wherein the write strategy analysis module communicates with the body of the optical media playback device to adjust the calibration data. The write strategy calibration system of claim 1, wherein the training model comprises a master data sequence comprising a combination of a mark and a space according to the following table: One of the xS/yM mark and space combinations includes a space of length x and a mark of length y, and the training model also includes the idle balance idle model, where x and y are integers. An optical media replay device comprising the write strategy analysis system as described in claim 1 of the patent application. The optical media reproducing apparatus according to claim 17, wherein the optical media reproducing apparatus is a recordable CD drive, a rewritable CD drive, a recordable DVD drive, a rewritable DVD drive, a Blu-ray DVD drive, and a high density. At least one of the DVD drives.