CN100359585C - Optical recording apparatus and method capable of connecting broken data - Google Patents
Optical recording apparatus and method capable of connecting broken data Download PDFInfo
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- CN100359585C CN100359585C CNB031423531A CN03142353A CN100359585C CN 100359585 C CN100359585 C CN 100359585C CN B031423531 A CNB031423531 A CN B031423531A CN 03142353 A CN03142353 A CN 03142353A CN 100359585 C CN100359585 C CN 100359585C
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Abstract
The present invention relates to an optical recording apparatus by which multiple digital data is written in an optical storage medium. When the writing process of the data is interrupted, a data interrupt address is generated, and the data is written from a data-linkage physical address. The apparatus comprises a physical address addressing module, a writing interruption generating module, a data writing module, an interrupt address generating module and a data-linkage physical address generator, wherein the physical address addressing module is used for providing a reference physical address by which the digital data is written in the optical storage medium. When the interruption is detected during the write process of data, the writing interruption generating module sends out a writing interrupt signal to interrupt the writing of the data temporarily, the interrupt address generating module generates a data interrupt address used for indicating the position of data interrupt, and the data-linkage physical address generator generates a data-linkage physical address for connecting interrupt data according to the data interrupt address, so that the optical recording apparatus can begin writing the data from the position.
Description
Technical field
The present invention relates to a kind of optical recording apparatus, be used for a plurality of data are write on the optical storage medium, particularly relate to when in the described data writing process if when take place interrupting, can produce a data interrupt address, and follow-up continuing from a data-linkage physical address writes described data on optical storage medium
Background technology
Optical recording system is flourishing day by day, and the direction of its technological breakthrough is mainly towards high-speed record/read, and two demands of high storage capacity develop.
Yet, when utilizing optical recording apparatus (for example: common on the market CD-ROM, DVD-ROM CD writers) to be recorded in a plurality of data on the optical record medium (for example: various CD, VCD, DVD burning sheet), understand the occurrence record data interruption sometimes because of some emergency situations, thereby cause the recording operation failure, consequently can't correctly again data be continued and write this optical record medium.Particularly present optical recording apparatus, the speed of its record/read is more and more faster, when data recording (writing) is interrupted, how to reduce the error that is taken place when being connected data, so that the data of Xian Jieing can correctly be read follow-up again, so become important problem.
Therefore, fundamental purpose of the present invention be when in the numerical data ablation process if when take place interrupting, provide a kind of method that produces the data interruption address, and follow-up continuing from a data-linkage physical address write described data, to address the above problem.
Summary of the invention
Fundamental purpose of the present invention is when taking place to interrupt in the data writing process, a kind of method that produces the data interruption address is provided, and follow-up continuing from a data-linkage physical address writes described data, uses to prevent to write this optical record medium because of the data interruption that writes causes correctly data being continued again.
The present invention relates to a kind of optical recording apparatus, be used for a plurality of data are written on this optical storage medium, and in when in the described data writing process if when take place interrupting, can detect this data interruption address, and follow-up continuing from this data-linkage address writes described data.This optical recording apparatus comprises a physical address addressed module, and writes interruption generation module, a data writing module, an interrupt address generation module and a data-linkage physical address generation module.The physical address addressed module be used to provide numerical data be written into optical storage medium one with reference to physical address.When detecting data writing process and take place to interrupt, write interrupt generation module can send one write look-at-me with temporary transient interruption data continue write.The interrupt address generation module then produces a data interruption address, with as and indicate the data interruption part.The data-linkage physical address generation module then can be pursuant to this data interruption address and produce a data-linkage physical address when be connected interrupting data again so that optical recording apparatus follow-up can begin to continue in this write described data.
Utilize optical recording apparatus of the present invention that a plurality of data are written on this optical storage medium, when in the described data writing process if when take place interrupting, can detect this data interruption address by this interrupt module, and follow-up continuing from this data-linkage address writes described data.Therefore, the present invention prevents to cause correctly data being continued again and write this optical record medium because of writing data interruption.
Optical recording apparatus of the present invention has following advantage:
1. the reference physical address that provides of physical address addressed module 12 is very fine, the position that makes data be connected again can be controlled very accurately, and can be by adjusting the physical address that data are connected again, the system delay that compensation is relevant reduces the error that is taken place when being connected data.
2. when the position that the searching data are connected again, be with reference to the physical address that is engraved in advance on the optical storage medium, but not reference record is in the logical address of the data of optical storage medium, even so when Ji Lu data correctly are not burnt to disc before (for example make a mistake in laser and/write head position), still can correctly be connected follow-up data again.
Description of drawings
Can be about the advantages and spirit of the present invention by being further understood below in conjunction with the detailed description of accompanying drawing.
Fig. 1 is an employed prerecording ditch groove form in the DVD-R/RW specification.
Fig. 2 is the system block diagrams of optical recording apparatus of the present invention.
Fig. 3 is the system block diagrams of physical address addressed module in the optical recording apparatus of the present invention.
Fig. 4 is the system block diagrams of physical address counter in the optical recording apparatus of the present invention.
Fig. 5 is the system block diagrams of the interrupt address generation module in the optical recording apparatus of the present invention.
Fig. 6 is to signal timing diagram embodiment illustrated in fig. 5 in order to the above-mentioned Fig. 2 of explanation the present invention.
Fig. 7 is the system block diagrams of another embodiment of physical address addressed module in the optical recording apparatus of the present invention.
Fig. 8 is the system block diagrams of another embodiment of physical address counter in the optical recording apparatus of the present invention
Fig. 9 is the system block diagrams of another embodiment of physical address addressed module in the optical recording apparatus of the present invention.
Figure 10 is the system block diagrams of another embodiment of physical address counter in the optical recording apparatus of the present invention.
Figure 11 is the system block diagrams of another embodiment of interrupt address generation module in the optical recording apparatus of the present invention.
Figure 12 is the system block diagrams of another embodiment of interrupt address generation module in the optical recording apparatus of the present invention.
Figure 13 is the system block diagrams of the data-linkage physical location generation module in the optical recording apparatus of the present invention.
The drawing reference numeral explanation
10 optical recording apparatus, 12 physical address addressed module
14 write interruption generation module 16 data writing modules
18,118 interrupt address generation modules
19,119 data-linkage physical address generation modules
20 push-pull signal extraction apparatuss, 22 swinging signal extraction apparatuss
24 phase-locked loops, 26 physical address code translators
28 physical address counters, 30 memory storages
31,39,47 low counter, 32,48 frame counters
33,41,49 sector counters, 34 wobble synchronization signal detecting devices
36,44 reference clock sources, 38,46 physical address counters
40 swing counters, 42,62 physical address synchronized signal detectors
52 memory storages, 54 length detection devices
56 counters, 58,60 counting circuits
64 logical address synchronized signal detectors
66 logical difference in address detecting devices, 72 push-pull signals
74 swinging signals, 76 clock signals
78 decoding physical addresss, 80 decoding correct signals
82 section count results, 84 frame count results
86 low level count results 88 write look-at-me
90 data interruption addresses, 92 data-linkage physical address
94 data write enable signal 100 optical storage mediums
Embodiment
(as CD-R/RW, DVD+R/RW DVD-R/RW), is with digital data record spiral helicine prerecording ditch groove (Pre-groove) on discs to the recordable optical disk of existing all size.This prerecording ditch groove presents a slight swing (wobble), the frequency of this swing can be used to control the speed that writes the data on the discs, and the prerecording ditch groove of each section (sector) all contains the address information relevant with the discs position on discs, be also referred to as the physical address (physical address) of discs, the data that will write on the discs in order to control can write on position correct on the discs.
In addition, with the DVD discs is example, the structured data unit that is burnt to the data on the DVD discs has following four kinds: channels bits (channel bits), Frame (data frame), data segments (datasectors), and error correction block (ECC block).Channels bits is the least unit that writes down on discs, and a data byte (byte) can change into 16 channels bits through a kind of EFM+ modulation (Eight to FourteenModulation Plus) and record on the disc.The EFM+ modulation technique can make that the continuous length of same signal state in the channels bits is the longest can be more than 11, the shortlyest can not be less than 3.Per 1456 channels bits can be added 32 bit data frames synchronizing symbols (data frame sync), altogether 1488 channels bits and form a Frame (data frame).This data-frame sync symbol comprises one continuous 14 same signal state, to have any different with the channels bits of normal EFM+ modulation.Per 26 Frames can form a data section (data sectors).A data section is the minimum logical data unit (logical data unit) that can read in the DVD discs, and preceding 4 data bit can be stored this data segments numbering (Sector ID) in data segments.If on the discs record data have been arranged, then the data segments on data numbering and data-frame sync symbol just can be used for the address on the locating disk, the addressing that claims this kind mode afterwards is the logical address (logical address) of discs, definition and difference thereof about physical address on the discs and logical address, known by those skilled in the art, can inquire about the relevant specifications (Data Book) of discs if needed, then not add detailed description in addition at this.Data before writing discs, the error correction that can do to be correlated with coding (Error Correcting Code is called for short ECC) so that can correct from the discs reading of data time, the mistake on the correction data more.
See also Fig. 1, Fig. 1 is an employed prerecording ditch groove form in the DVD-R/RW specification.The optical storage medium 100 of DVD-R/RW includes a plurality of data-tracks that can be used to store data, a plurality of prerecording ditch grooves are then arranged on data-track, above-mentioned prerecording ditch groove can present a slight swing, from wherein a swinging signal cycle (wobble period) of resultant signal is 186 channel bit length, and a data frame length has comprised 8 swinging signal cycles (wobble period), also just equals 1488 channel bit length; At first three swinging signal of even data frame in the cycle, can between adjacent prerecording ditch groove, there be some pre-pit positions (Pre-pit bits), in order to store the physical blocks numbering (Physical block adress) of this district's prerecording ditch groove, the pit position that wherein is engraved in first swinging signal cycle in advance is fixing the appearance, also is called pre-pit synchronization bit (Pre-pit sync bit).Optical recording apparatus (or pan of a steelyard sheet cd-rom recorder) includes a laser and/write head, wherein further comprise a laser diode (laserdiode) and photodetector (photo-detector), when the disc cd-rom recorder desires to read data on the optical storage medium (or claiming discs), can impinge upon on this prerecording ditch groove with a laser and/write hair outgoing laser beam, detect the both sides reflected light beam signal difference that reads tangent direction with discs by photodetector again, to capture a push-pull signal (push-pull signal).By the swinging signal that then can further capture in this push-pull signal in the above-mentioned prerecording ditch groove, and detect the relevant physical address information that originally is engraved in advance on the discs.
See also Fig. 2, Fig. 2 is the system block diagrams of optical recording apparatus of the present invention.The invention relates to a kind of optical recording apparatus 10, for example: VCD or DVD disc cd-rom recorder, be used for a plurality of data are written on the optical storage medium, for example: VCD or DVD disc, and when in the data writing process if when take place interrupting, can produce a data interruption address, and follow-up continuing from a data-linkage physical address writes described data.And optical recording apparatus 10 comprises a physical address addressed module (PhysicalAddressing Module) 12, one writes interruption generation module (a record-interruptgenerator) 14, one data writing module (a data recording control module) 16, one interrupt address generation module (a data-interrupt address generator) 18, an and data-linkage physical address generation module (a data-reconnecting physical addressgnerator) 19.
Physical address addressed module 12 is used to provide a reference physical address with respect to physical address on the optical storage medium 100 (Reference Physical Address), writes the reference of the data on the optical storage medium 100 as optical data.Write and interrupt 14 of generation modules and be used for detecting one and write the interruption occurrence condition, for example: when the data volume of being kept in the data temporary storage is lower than a critical value, or optical recording apparatus 10 is when having produced some bursty state or abnormal operation situation, write interrupt 14 of generation modules can be in response to the generation of this conditioned disjunction situation, and correspondingly send one and write look-at-me to data writing module 16 and interrupt address generation module 18.Data writing module 16 can be written into data on the optical storage medium 100 under the situation of normal running, and receives above-mentionedly when writing look-at-me when data writing module 16, then can stop data being continued to write on the optical storage medium 100.18 of interrupt address generation modules are the processes that write in above-mentioned data when taking place to interrupt, and in order to producing the place that interrupt with representative data a data interruption address, and data-linkage physical address generation module 19 are delivered in this data interruption address.19 of data-linkage physical address generation modules can produce a corresponding data-linkage physical address and deliver to data writing module 16 according to received data interruption address.Thus, when optical recording apparatus 10 was wanted to be connected interrupted data again, data writing module 16 just can be with this data-linkage physical address, as the follow-up initial physical address that will be written on the optical storage medium of interrupted data.And the reference physical address that is provided when physical address addressed module 12 is when equaling data-linkage physical address that data-linkage physical address generation module 19 produces, data writing module 16 will continue interrupted data and be written on the optical storage medium 100, and correctly finishes data-linkage.
See also Fig. 3, Fig. 3 is the system block diagrams of physical address addressed module among the present invention.Comprise a push-pull signal extraction apparatus 20, a swinging signal (wobble) extraction apparatus 22, a phase-locked loop 24 (phase locked loop), a physical address code translator 26 and a physical address counter 28 in the physical address addressed module 12.Because the photodetector (photo-detector) in the optical recording apparatus 10 is when reading the data of optical storage medium 100, can or be called the signal that tangent direction reads both sides along the direction of data-track, and push-pull signal extraction apparatus 20 is subtracted each other the signal that the tangent direction both sides are produced, therefrom to capture a push-pull signal (push-pull signal).22 of swinging signal extraction apparatuss are then by the swinging signal that departs from that captures prerecording ditch groove on the optical storage medium 100 in the push-pull signal, and deliver to phase-locked loop 24, and in phase-locked loop 24, carry out the synchronous processing of signal, produce and the synchronous clock signal of this swinging signal, and further deliver in the physical address counter 28 and count.And the effect of physical address code translator 26, be that present resulting push-pull signal is deciphered, so that the above-mentioned physical address that is engraved in advance on the optical storage medium 100 is deciphered out, also therefore produce physical address, and be sent in the physical address counter 28 with respect to present push-pull signal.Physical address counter 28 receives from the physical address of physical address code translator 26 and from the clock signal of phase-locked loop 24, when physical address code translator 26 correctly solves the physical address of some positions on the discs, physical address counter 26 will be reset to corresponding address value, afterwards according to counting from the clock signal of phase-locked loop 24, just can produce thus than meticulousr physical address that physical address code translator 26 is deciphered out, and be sent in the data writing module 16 reference when being written into optical storage medium 100 as data, therefore also can claim this meticulousr physical address for reference to physical address (Reference Physical Address).
See also Fig. 4, Fig. 4 is the system block diagrams of physical address counter among the present invention.Physical address counter 28 comprises a low counter (low-bit counter) 31, one frame counter (framecounter) 32, a sector counter (sector counter) 33.Below the signal that will be produced with DVD-RW specification shown in Figure 1 is an example, and the principle of operation of physics address counter 28 is described.When physical address code translator 26 correctly solves physical address, can send a decoding correct signal to low counter 31 and frame counter 32, so therefore low counter 31 and frame counter 32 are reset (reset) is zero, preparing to begin counting, sector counter 33 is the correct physical address deciphered out of loaded with physical addresses code translator 26 then.Afterwards, phase-locked loop 24 can produce a clock signal to low counter 31, and its frequency is 186 times (cycle of this clock signal equals a channels bits unit) of swinging signal frequency, and clock signal can begin to drive low counter 31 and count.When low counter 31 count down to the length (1488 channels bits just) of a Frame, can reset to zero automatically, and carry is counted to drive frame counter 32.And when frame counter 32 count down to the length of a data section (1 data section comprises 26 Frames) can reset to zero automatically, and carry is counted with drive section counter 33.Thus, can coact by low counter 31, frame counter 32 and sector counter 33, providing a reference physical address with respect to the discs physical address, this one then may be output in the data writing module 16 reference when being written into optical storage medium 100 as data with reference to physical address.
Add detailed description again in this function of interrupting generation module 14 that writes at Fig. 2 optical recording apparatus 10.Write interruption generation module 14 and comprise a storer and a decision unit, optical recording apparatus 10 can be from the data source reading of data of hard disc of computer etc., to prepare follow-up being burned onto in the optical storage medium 100, yet before not writing optical storage medium 100 as yet, described data can be temporary in this and write in the storer that interrupts generation module 14.In this storer the quantity of temporary data cross low in; usually can cause optical recording apparatus 10 factors to write the situation of interruption according to quantity not sufficient; therefore producing data writes and makes a mistake; and write the decision unit that interrupts generation module 14, be used for detecting this condition that writes the interruption generation exactly and whether produce.When the quantity of data temporary in the storer is lower than a default critical value, this one writes and interrupts occurrence condition and can set up, therefore the data bulk that determines the unit to keep in this storer was reduced to before zero, produce this and write look-at-me to data writing module 16, interrupt and suspend data continue write.
See also Fig. 5, Fig. 5 is the system block diagrams of the interrupt address generation module in the optical recording apparatus of the present invention.Interrupt address generation module 18 is connected in to write and interrupts generation module 14 and physical address addressed module 12, wherein also comprises a memory storage 30.When interrupt address generating module 18 receive write interrupt that generation module 14 sent write look-at-me after, one address can be recorded in the memory storage 30, and produce according to this can the corresponding data interruption address of data interruption part at present, and follow-up being sent in the data-linkage physical address generation module 19.And be recorded in address in the memory storage 30, then can be the reference physical address that is provided by physical address addressed module 12 at that time, or its corresponding logical address of the data that write at that time.
Add detailed description again in this function at the data-linkage physical address generation module 19 of Fig. 2 optical recording apparatus 10.When data-linkage physical address generation module 19 receives the data interruption address that interrupt address generation module 18 sent, this data interruption address can be done one revises, the modal practice is that the data interrupt address is increased and decreased a shift value, to produce a data-linkage physical address to data writing module 16, data writing module 16 just can be in view of the above with as an initial physical address, interrupted data be connected and continue to write on the optical storage medium 100.If the data interruption address that interrupt address generation module 18 produces is one with reference to physical address; then data-linkage physical address generation module 19 be used fors are to the shift value of data interrupt address increase and decrease; will consider into, optical recording apparatus 10 own some system delays that produced are also compensated; the factor that causes these system delays to produce has a variety of possibilities; for example: the laser and/write head of optical recording apparatus 10 is when read-write optical storage medium 100; produce some time delays with regard to regular meeting giving off laser beam and read between the signal that reflects; following of different situation causes the length of time delay also different; data-linkage physical address generation module 19 can be according to length time delay; the shift value size that will increase and decrease is done appropriateness adjustment; the data-linkage physical address that makes data-linkage physical address generation module 19 be produced can become a correct initial physical address, makes things convenient for 16 follow-up interrupted data correctly can linkings of data writing module.
See also Fig. 6, comprise Fig. 6 (a) to Fig. 6 (d), Fig. 6 be in order to explanation the present invention above-mentioned Fig. 2 to signal timing diagram embodiment illustrated in fig. 5, and please cooperate the system block diagrams of Fig. 3 to Fig. 5 to be understood.In Fig. 6 (a), push-pull signal extraction apparatus 20 can capture a push-pull signal 72, swinging signal extraction apparatus 22 is then then by capturing a swinging signal 74 in the push-pull signal, and phase-locked loop 24 can one of generation be the clock signal 76 of 186 times of swinging signal 74 frequencies, and further delivers to the work of assisting follow-up counting in the physical address counter 28.In Fig. 6 (b), physical address code translator 26 can detect the pre-pit position in the push-pull signal 72, goes out wherein physical address 78 in the hope of correct decoding.For example: when correct physical address " 8000 " decoded when going out, this physical address values " 8000 " then be loaded sector counter 33, and decoding correct signal 80 also is sent in low counter 31 and the frame counter 32, and low counter 31 and frame counter 32 are reset to zero, 31 clock signals of being exported by phase-locked loop 24 76 of low counter drive and begin to count afterwards.When low counter 31 count down to 1488 channels bits, can reset to zero automatically, and carry is counted to drive frame counter 32; When frame counter 32 count down to 26 Frames, also can reset to zero automatically, and carry becomes with drive section counter 33 countings " 8001 ".Low level count results 86, frame count result 84 and section count results 82 also are shown among Fig. 6 (b), are the work how to count so that understand in the physical address counter 28.In Fig. 6 (c), interrupt generation module 14 and send when writing look-at-me 88 when upset operation causes writing, interrupt address generation module 18 also can receive this and one write look-at-me 88, and the reference physical address (8001 that physical address counter 28 in the physical address addressed module 12 is sent, 0,3) is recorded in the memory storage 30.The value that memory storage 30 is write down (8001,0,3), to write data generation interruptions be at the 8001st section in representative, the 0th Frame, the 3rd channels bits, and this is delivered to data-linkage physical address generation module 19 as data interruption address 90.In Fig. 6 (d), data-linkage physical address generation module 19 is in order to produce data-linkage physical address 92, data interruption address 90 can be done suitably to handle, for example: if the laser and/write head is when equal 3 channel bit length the time delay that read-write is caused during optical storage medium 100, data-linkage physical address generation module 19 can be with the reference physical address (8001 that is write down in the memory storage 30,0,3) deduct this system delay value, that is to say that the data-linkage physical address that data-linkage physical address generation module 19 is produced is:
(the 8001st section, the 0th Frame, the 3rd channels bits)-3 channels bits=(the 8001st section, the 0th Frame, the 0th channels bits)
Thus, follow-up in interrupted data are connected, data writing module 16 will be (8001 in data-linkage physical address, 0,0) part, send data and write enable signal 94, carry out the linking burning of data with notice laser and/write head, because the action need time of laser and/write head, for example: aforementioned system postpones to equal 3 channel bit length, therefore the laser and/write head in fact can be from (8001,0,3) interrupted data is connected, thus, system delay will be returned by compensation, and the data that write that continue afterwards just can be connected smoothly with the data that interrupted last time.
See also Fig. 7, Fig. 7 is the system block diagrams of another embodiment of physical address addressed module in the optical recording apparatus of the present invention.In physical address addressed module shown in Figure 7 112 and physical address addressed module 12 shown in Figure 3, it is identical that the part assembly is arranged, below will be censured but do not explained again in addition with identical numbering, there is the part assembly then variant in addition, below will censured and describe in detail with different numberings.Comprise a push-pull signal extraction apparatus 20, a swinging signal extraction apparatus 22, a wobble synchronization signal detecting device 34, a physical address code translator 26, a reference clock source 36 and a physical address counter 38 in the physical address addressed module 112.With identical assembly in the physical address addressed module 12 of Fig. 3, comprise a push-pull signal extraction apparatus 20, a swinging signal extraction apparatus 22 and a physical address code translator 26; And the difference among Fig. 7 and Fig. 3 embodiment is the phase-locked loop 24 that replaces among Fig. 3 with wobble synchronization signal detecting device 34 and reference clock source 36, and the counting mode of physical address counter 38 also is different from physical address counter 28.
The effect of wobble synchronization signal detecting device 34 is the swinging signals that extracted in order to locking swinging signal extraction apparatus 22, to produce and the synchronous wobble synchronization signal of this swinging signal.36 in reference clock source provides a reference clock signal, and the frequency of this signal is higher than the frequency of this swinging signal.In fact, a specific embodiment of wobble synchronization signal detecting device 34 can be a phase-locked loop (Phase-lockedloop), in order to locking above-mentioned swinging signal, and with the one-period of the clock signal of a high frequency be unit, to adjust the phase place of phase-locked loop institute output signal.And the clock signal of this high frequency can be exactly the reference clock signal that reference clock source 36 is provided, and the clock signal of a high frequency also can be provided by other signal source, makes wobble synchronization signal detecting device 34 can produce required wobble synchronization signal.Also include a plurality of counters among the physical address counter 38, and can be distinguished into low level and high-order two parts, low portion wherein is to count with the higher reference clock signal of said frequencies.When physical address code translator 26 correctly solves physical address, physical address counter 38 can be reset to corresponding address value, physical address counter 38 then can be according to received wobble synchronization signal afterwards, the low portion of physical address counter 38 is reset, and the high-order portion of physical address counter 38 is counted, so that can produce meticulousr reference physical address.
See also Fig. 8, Fig. 8 is the system block diagrams of another embodiment of physical address counter in the optical recording apparatus of the present invention.Described in detail at physical address counter 38 in the physical address addressed module 112 of Fig. 7, physical address counter 38 comprises a low counter 39, a swing counter 40 and a sector counter 41 again.Low counter 39 is to count with the reference clock signal that reference clock source 36 is provided, when physical address code translator 26 correctly solves physical address, can send a decoding correct signal to low counter 39 and swing counter 40, so it is zero that low counter 39 and 40 in counter of swing are reset, preparing to begin counting, sector counter 41 is the correct physical address deciphered out of loaded with physical addresses code translator 26 then.The wobble synchronization signal that wobble synchronization signal detecting device 34 is produced also can be reset low counter 39, also makes swing counter 40 begin to count simultaneously.(with DVD-RW specification shown in Figure 1 is example when swing counter 40 count down to the length of a data section, 1 data section comprises 26 Frames, totally 208 hunting periods, just 38688 channels bits) can reset to zero automatically, and drive section counter 41 begins to count.Thus, coact by low counter 39, swing counter 40 and sector counter 41, just can provide a reference physical address with respect to the discs physical address, this then may be output in the data writing module 16 reference when being written into optical storage medium 100 as data with reference to physical address.
See also Fig. 9, Fig. 9 is the system block diagrams of another embodiment of physical address addressed module in the optical recording apparatus of the present invention.In physical address addressed module shown in Figure 9 212 and physical address addressed module 112 shown in Figure 7, it is identical that the part assembly is arranged, below will be censured but do not explained again in addition with identical numbering, there is the part assembly then variant in addition, below will censured and describe in detail with different numberings.Physical address addressed module 212 comprises a push-pull signal extraction apparatus 20, a physical address code translator 26, a physical address synchronized signal detector 42, a reference clock source 44 and a physical address counter 46.As once illustrating when the key drawing 1, because can there be some pre-pit positions (Pre-pit bits) in optical storage medium 100 between adjacent prerecording ditch groove, in order to store the physical blocks numbering (Physical block adress) of this district's prerecording ditch groove, therefore by just can further capturing the relevant physical address information that originally is engraved in advance on the optical storage medium 100 in the push-pull signal.And the effect of physical address synchronized signal detector 42, promptly be from this push-pull signal, to detect the physical address synchronizing signal that is engraved in advance on the optical storage medium 100, and produce a physical address synchronous reference signal, with DVD-RW specification shown in Figure 1 is example, and the physical address synchronizing signal on the optical storage medium 100 can be the position of pre-pit synchronization bit (Pre-pit sync bit).
44 in reference clock source provides a reference clock signal, and the frequency of this signal is higher than the frequency of this push-pull signal.Also include a plurality of counters in the physical address counter 46, and can be distinguished into low level and high-order two parts, low portion wherein is to count with the higher reference clock signal of frequency.When physical address code translator 26 correctly solves physical address, physical address counter 46 can be reset to corresponding address value, physical address counter 46 then can be according to received physical address synchronous reference signal afterwards, the low portion of physical address counter 46 is reset, and the high-order portion of physical address counter 46 is counted, so that can produce meticulousr reference physical address.In fact, a specific embodiment of physical address synchronized signal detector 42 can be a phase-locked loop (Phase-lockedloop), in order to locking above-mentioned physical address synchronizing signal, and with the one-period of the clock signal of a high frequency be unit, to adjust the phase place of phase-locked loop institute output signal.And the clock signal of this high frequency can be exactly the reference clock signal that reference clock source 44 is provided, the clock signal of one high frequency also can be provided by other signal source, make physical address synchronized signal detector 42 can produce required physical address synchronous reference signal.See also Figure 10, Figure 10 is the system block diagrams of another embodiment of physical address counter in the optical recording apparatus of the present invention.Physical address counter 46 comprises a low counter 47, a frame counter 48 and a sector counter 49.Low counter 47 is to count with the reference clock signal that reference clock source 44 is provided.When physical address code translator 26 correctly solves physical address, can send a decoding correct signal to low counter 47 and frame counter 48, so it is zero that 48 of low counter 47 and frame counters are reset, preparing to begin counting, sector counter 47 is the correct physical address deciphered out of loaded with physical addresses code translator 26 then.The physical address synchronous reference signal that physical address synchronized signal detector 42 produces can be reset low counter 47, also makes frame counter 48 begin to count simultaneously.(with DVD-RW specification shown in Figure 1 is example when frame counter 48 count down to the length of a data section, 1 data section comprises 26 Frames, wherein the Frame of 13 even numbers includes 13 pre-pit synchronization bits altogether) can reset to zero automatically, and drive section counter 49 countings, for the Frame zone that does not have the pre-pit synchronization bit (Frame of odd number), then, produce the pre-pit synchronization bit signal of an interpolation in the mode of prediction with the position at detected pre-pit synchronization bit place before.Thus, coact by low counter 47, frame counter 48 and sector counter 49, just can provide a reference physical address with respect to the discs physical address, this one then may be output in the data writing module 16 reference when being written into optical storage medium 100 as data with reference to physical address.
See also Figure 11, Figure 11 is the system block diagrams of another embodiment of interrupt address generation module in the optical recording apparatus of the present invention.In the embodiment of Figure 11, interrupt address generation module 118 comprises a memory storage 52 and a length detection device 54.Because the front was illustrated, except this data-frame sync symbol (comprising one 14 same signal state), EFM+ modulation technique in the optical recording apparatus 10, can make that the continuous length of same signal state in the channels bits signal is the longest can be more than 11 positions, the shortlyest can not be less than 3 positions, therefore, length detection device 54 is after receiving channels bits (channel bits) signal that is read from optical storage medium 100, whether the continuous length that can detect same signal state in the channels bits signal surpasses a predetermined maximum allowable value, and for example saying so does not surpass 14 positions (maximum possible value in the normal channel position).When paranormal channel bit length of length that detects the consecutive identical signal condition of channels bits signal or predetermined maximum allowable value, then expression is interrupted part (being that the zone of record data and the boundary of white space are arranged on the optical storage medium 100) for data recording herein probably, at this moment, length detection device 54 will produce an activation signal (enabling signal) to memory storage 52.After memory storage 52 receives the enable signal of length detection device 54 generations, the reference physical address that provided by physical address addressed module 12 at that time just is provided, or note at that time its pairing logical address of data that is read from the optical storage medium 100, to produce a data interruption address, come the place of representative data interruption, and data-linkage physical address generation module 19 is delivered in this data interruption address.
See also Figure 12, Figure 12 is the system block diagrams of another embodiment of interrupt address generation module in the optical recording apparatus of the present invention.In the embodiment of Figure 12, interrupt address generation module 218 comprises a counter 56 and a counting circuit 58.When data are prepared to be written on the optical storage medium 100 via data writing module 16, counter 56 can be set an initial count value (starting value), for example: this initial count value can be certain given numeral (for example 0), or the predetermined initial logical address that writes data, or the predetermined initial physical address that writes data.Afterwards, when data writing module 16 begins to write data in the optical storage medium 100, the data that also can produce a high level (high level) write enable signal in counter 56, make counter 56 begin to count and produce a corresponding accumulated counts value (incremental value).Situation generation when some upset operation, cause data to write when stopping, data write enable signal can become low level (low level), make counter 56 stop counting, this moment is again by counting circuit 58 catchers, the initial count value of utilizing counter 56 originally to be set adds counts the accumulated counts value that draws afterwards, calculates this data interruption address.For example: the initial count value of supposing counter 56 is zero, then write when stopping in data, the accumulated counts value that counter 56 is drawn when stopping to count in fact just equals to be written into the length of data in the optical storage medium 100, at this moment counting circuit 58 can utilize above-mentioned counter 56 resulting values to add the initial physical address that writes data at first, writes the physical address that stops when stopping to produce data.Other practice is also arranged, for example: the initial physical address when the initial count value of counter 56 is set at data and writes beginning, in the process that data write, counter 56 can up add up according to this initial count value, thus, then write when stopping in data, the stopping count value and will equal data and write the physical address that stops when stopping of counter 56, the also place of interrupting with regard to representative data, and data-linkage physical address generation module 19 directly be exported and be delivered to counting circuit 58 just can with counter 56 resulting results
When data-linkage physical address generation module 19 receives above-mentioned data interruption address, can produce a corresponding data-linkage physical address and deliver to data writing module 16.If the data interruption address that interrupt address generation module 18,118,218 produces is one with reference to physical address, then data-linkage physical address generation module 19 be used fors are to the shift value of data interrupt address increase and decrease, will consider 10 own some system delays that produced of optical recording apparatus into and compensate, for example: the time delay of laser and/write head when reading and writing optical storage medium 100.If the data interruption address that interrupt address generation module 18 produces is a logical address, then the shift value that increased and decreased of data-linkage physical address generation module 19 also can comprise the difference of a logical address and physical address except will compensating above-mentioned system delay.And the difference of above-mentioned logical address and physical address, can detect by following manner and learn: when reading optical storage medium 100, read the wherein physical address of push-pull signal, and read the wherein logical address of channels bits signal, both are subtracted each other the difference that is obtained promptly is the difference of logical address and physical address.
See also Figure 13, Figure 13 is the system block diagrams of the data-linkage physical location generation module in the optical recording apparatus of the present invention.The data-linkage physical address generation module 119 of Figure 13 is the system architectures that proposed when being a logical address at the data interruption address that is produced when interruption address generating module 18 especially.In the embodiment of Figure 13, data-linkage physical address generation module 119 comprises a counting circuit 60, a physical address synchronized signal detector 62, a logical address synchronized signal detector 64, and a logical difference in address detecting device 66.Physical address synchronized signal detector 62 can detect the physical address synchronizing signal that is engraved in advance on the optical storage medium 100 from push-pull signal, and produces first synchronizing signal that is synchronized with physical address.Logical address synchronized signal detector 64 then detects the logical address synchronizing signal on the data be written in optical storage medium 100, and produces second synchronizing signal that is synchronized with logical address.With DVD-RW specification shown in Figure 1 is example, this first synchronizing signal can be a synchronizing signal that is synchronized with the position of pre-pit synchronization bit in this push-pull signal (Pre-pit sync bit), and this second synchronizing signal can be a synchronizing signal that is synchronized with the position of data-frame sync symbol in this channels bits signal (dataframe sync).66 of logical difference in address detecting devices are in order to detecting the mistiming of this first synchronizing signal and this second synchronizing signal, and the difference between computational logic address and physical address.Counting circuit 60 last data interruption logical address and the above-mentioned differences that then interrupt address generation module 18 produced are calculated, to produce a data-linkage physical address to data writing module 16, data writing module 16 just can be in view of the above with as a reference point, interrupted data be connected and continue to be written on the optical storage medium 100.
By the above detailed description of preferred embodiments, be to wish to know more to describe feature of the present invention and spirit, and be not to come category of the present invention is limited with above-mentioned disclosed preferred embodiment.On the contrary, its objective is that hope can contain in the category of claim of being arranged in of various changes and tool equality institute of the present invention desire application.
Claims (15)
1. optical recording apparatus, be used for a plurality of data are written on the optical storage medium, and when in the described data writing process if when take place interrupting, can produce a data interruption address, and follow-up continuing from a data-linkage physical address writes described data, so that the described data of Xian Jieing can correctly be read follow-up again, this optical recording apparatus comprises:
One physical address addressed module is used to provide a reference physical address with respect to the former physical address of carving in advance on this optical storage medium, to be written into the reference of this optical storage medium as described data;
One writes the interruption generation module, is used for detecting one and writes the interruption occurrence condition, and correspondingly send one and write look-at-me;
One data writing module, receiving reference physical address that this physical address addressed module provided and this writes and interrupts the look-at-me that writes that generation module sends, described data can be written on this optical storage medium, and when this data writing module receives that this writes look-at-me, can stop described data are write on this optical storage medium;
One interrupt address generation module receives reference physical address that this physical address addressed module provided and this and writes and interrupt the look-at-me that writes that generation module sends, and is used for producing this data interruption address when described data writing process takes place to interrupt; And
One data-linkage physical address generation module, receive the data interruption address of this interrupt address generation module generation and produce this data-linkage physical address according to this data interruption address, and this data-linkage physical address outputed to this data writing module, when feasible desire is connected interrupted data again, this data writing module can be used this data-linkage physical address, is written into initial physical address on this optical storage medium as described interrupted data.
2. optical recording apparatus as claimed in claim 1, wherein this optical recording apparatus comprises a laser diode being used for sending a laser beam to this optical storage medium, and a photodetector is to be used for reading the signal of this optical storage medium institute reflected back.
3. optical recording apparatus as claimed in claim 2, wherein this physical address addressed module comprises:
One push-pull signal extraction apparatus is in order to the signal subtraction of tangent direction both sides that this photodetector is produced when reading this optical storage medium, to capture a push-pull signal;
One swinging signal extraction apparatus is with the swinging signal on the prerecording ditch groove that captures this optical storage medium in this push-pull signal certainly;
One phase-locked loop in order to locking this swinging signal, and produces and the synchronous clock signal of this swinging signal;
One physical address code translator in order to will be engraved in the physical address decoding on this optical storage medium in this push-pull signal certainly in advance, produces on this optical storage medium through decoding one corresponding physical address; And
One physical address counter, after this physical address is come out by correct decoding, this physical address counter can be refitted in this corresponding physical address, and count according to the clock signal of this phase-locked loop, to produce than meticulousr this of this physical address of deciphering out with reference to physical address.
4. optical recording apparatus as claimed in claim 2, wherein this physical address addressed module comprises:
One push-pull signal extraction apparatus is in order to the signal subtraction of tangent direction both sides that this photodetector is produced when reading this optical storage medium, to capture a push-pull signal;
One swinging signal extraction apparatus is with the swinging signal on the prerecording ditch groove that captures this optical storage medium in this push-pull signal certainly;
One reference clock source is to provide a reference clock signal of the frequency that is higher than this swinging signal;
One wobble synchronization signal detecting device in order to locking this swinging signal, and produces and the synchronous wobble synchronization signal of this swinging signal;
One physical address code translator in order to will be engraved in the physical address decoding on this optical storage medium in this push-pull signal certainly in advance, produces on this optical storage medium through decoding one corresponding physical address; And
One physical address counter, comprise an at least one low counter and a high-positioned counter, this low counter is counted with this reference clock signal, after this physical address is come out by correct decoding, this physical address counter can be reset at this corresponding physical address, and according to this wobble synchronization signal so that this low counter is reset and carry, this high-positioned counter is counted, to produce meticulousr this with reference to physical address.
5. optical recording apparatus as claimed in claim 4, wherein this wobble synchronization signal detecting device is a phase-locked loop, in order to locking this swinging signal, and with the one-period of this reference clock signal be the phase place that unit adjusts institute's output signal, to produce this wobble synchronization signal.
6. optical recording apparatus as claimed in claim 2, wherein this physical address addressed module comprises:
One push-pull signal extraction apparatus is in order to the signal subtraction of tangent direction both sides that this photodetector is produced when reading this optical storage medium, to capture a push-pull signal;
One physical address code translator in order to will be engraved in the physical address decoding on this optical storage medium in this push-pull signal certainly in advance, produces on this optical storage medium through decoding one corresponding physical address;
One reference clock source is to provide a reference clock signal of the frequency that is higher than this push-pull signal;
One physical address synchronized signal detector in order to detecting the physical address synchronizing signal be engraved in advance on this optical storage medium from this push-pull signal, and produces a physical address synchronous reference signal; And
One physical address counter, comprise an at least one low counter and a high-positioned counter, this low counter can be counted with this reference clock signal, after this physical address is come out by correct decoding, this physical address counter can be refitted in this corresponding physical address, and according to this physical address synchronous reference signal so that this low counter is reset and carry, this high-positioned counter is counted, to produce meticulousr this with reference to physical address.
7. optical recording apparatus as claimed in claim 6, wherein this physical address synchronized signal detector is a phase-locked loop, in order to lock pre-physical address synchronizing signal of carving on this optical storage medium, and with the one-period of this reference clock signal be the phase place that unit adjusts institute's output signal, to produce and this synchronous physical address synchronous reference signal of this physical address synchronizing signal.
8. optical recording apparatus as claimed in claim 1, wherein this interrupt address generation module comprises a memory storage, and when data write when interrupting, an address at corresponding present data interruption place can be recorded in this memory storage, with as this data interruption address.
9. optical recording apparatus as claimed in claim 1, wherein this interrupt address generation module comprises a memory storage and a length detection device, this length detection device is in order to receive the channels bits signal on this optical storage medium, and detect wherein whether the length of consecutive identical signal condition surpasses a predetermined maximum allowable value, to produce an activation signal to this memory storage, and make corresponding address under this memory means record, as this data interruption address.
10. optical recording apparatus as claimed in claim 1, wherein this interrupt address generation module comprises:
One counter via the setting of an initial count value, can be counted with the follow-up data sync that writes this optical storage medium; And
One counting circuit utilizes the count results of this counter to calculate this data interruption address.
11. optical recording apparatus as claimed in claim 1, wherein this data-linkage physical address generation module increases and decreases a shift value with this data interruption address, as this data-linkage physical address.
12. optical recording apparatus as claimed in claim 11, if wherein this data interruption address is a data interruption logical address, then this shift value of being produced of this data-linkage physical address generation module comprises the logical address of these interruption data and the difference of physical address.
13. optical recording apparatus as claimed in claim 12, wherein this data-linkage physical address generation module comprises:
One physical address synchronized signal detector in order to detecting the physical address synchronizing signal be engraved in advance on this optical storage medium from this push-pull signal, and produces one first synchronizing signal of the physical address that is synchronized with this optical storage medium;
One logical address synchronized signal detector in order to detecting a logical address synchronizing signal of written data on this optical storage medium, and produces one second synchronizing signal of the logical address that is synchronized with this optical storage medium;
One logical difference in address detecting device in order to detecting the mistiming of this first synchronizing signal and this second synchronizing signal, and calculates the difference between this logical address and this physical address; And
One counting circuit calculates this data interruption address and this difference, produces this data-linkage physical address to this data writing module.
14. optical recording apparatus as claimed in claim 1, wherein this writes that to interrupt occurrence condition be to cause this optical recording apparatus to write the condition that data make a mistake, and this writes and interrupts generation module and comprise a decision unit, write the interruption occurrence condition in order to detect this, and produce this and write look-at-me.
15. optical recording apparatus as claimed in claim 14, wherein read and do not write described data in this optical storage medium as yet from a data source, can be temporarily stored in this writes in the storer that interrupts generation module, when the quantity of data temporary in this storer is lower than a default critical value, can produce this and write the interruption occurrence condition, and this decision unit temporary data bulk in this storer was reduced to before zero, produced this and write look-at-me.
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| CNB031423531A CN100359585C (en) | 2003-06-13 | 2003-06-13 | Optical recording apparatus and method capable of connecting broken data |
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| CNB031423531A CN100359585C (en) | 2003-06-13 | 2003-06-13 | Optical recording apparatus and method capable of connecting broken data |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10289167A (en) * | 1997-04-16 | 1998-10-27 | Toshiba Corp | Computer system |
| JP2001160216A (en) * | 1999-12-02 | 2001-06-12 | Hitachi Ltd | Signal recorder |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10289167A (en) * | 1997-04-16 | 1998-10-27 | Toshiba Corp | Computer system |
| JP2001160216A (en) * | 1999-12-02 | 2001-06-12 | Hitachi Ltd | Signal recorder |
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