CN1637909A - Sorts recognition method and device for digital multifunctional optical discs - Google Patents
Sorts recognition method and device for digital multifunctional optical discs Download PDFInfo
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- CN1637909A CN1637909A CN 200410061584 CN200410061584A CN1637909A CN 1637909 A CN1637909 A CN 1637909A CN 200410061584 CN200410061584 CN 200410061584 CN 200410061584 A CN200410061584 A CN 200410061584A CN 1637909 A CN1637909 A CN 1637909A
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- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
- G11B19/02—Control of operating function, e.g. switching from recording to reproducing
- G11B19/12—Control of operating function, e.g. switching from recording to reproducing by sensing distinguishing features of or on records, e.g. diameter end mark
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Abstract
The present invention relates to a method of judging the type of digital versatile disc to discriminate it is Read Only Memory DVD, Once Recordable DVD, or Rewritable many times DVD, the main steps include: reading out a tracking error signal from DVD disc, if the amplitude of the tracking error signal is over a first predetermined value, then it is judged that the disc is DVD-R, else reading out a RECD signal, if the RECD signal is zero, then determining that the disc is blank DVD-RW, else reading out a total strength signal, if the total strength signal is over a second predetermined value, then determining that the disc is DVD-ROM, else determining that the disc is DVD-RW which has been recorded with some information.
Description
Technical field
The present invention relates to the multi-functional laser disc kind of a kind of numerical digit determination methods, particularly relate to a kind of read-only, single burning and the multi-functional laser disc kind of numerical digit determination methods of burning repeatedly distinguished.
Background technology
The multi-functional laser disc of numerical digit (digital versatile disc abbreviates DVD as) has been very general data storage form.Be to be used to deposit film the earliest, be used to store other data afterwards gradually, for example be used in formula and archives on the PC.Traditional read-only laser disc can not satisfy the demand of backup formula and archives, the multi-functional laser disc of numerical digit of the writable data of many kinds of therefore having derived, and at present common kind is as follows:
1, the multi-functional laser disc of read-only numerical digit abbreviates DVD ROM as, and wherein ROM represents ROM, just read only memory.This laser disc can only read, and can not be used for burning data.
2, the multi-functional laser disc of single burning numerical digit is divided into two kinds of specifications of DVD-R and DVD+R, and wherein R represents recordable.As its name suggests, this laser disc can only burning once.
3, the multi-functional laser disc of burning numerical digit repeatedly is divided into two kinds of specifications of DVD-RW and DVD+RW, and wherein RW represents re-writable.This laser disc can repeat burning data, uses most convenient.
For the convenience of the users, each tame manufacturer all has release to be compatible to the CD-ROM device of the multi-functional laser disc of multiple numerical digit, yet the read-write mode of the multi-functional laser disc of each numerical digit is all different, therefore the user puts into laser disc first thing afterwards, judge the kind of laser disc exactly, just distinguish read-only, single burning and the multi-functional laser disc of numerical digit of burning repeatedly.
Traditional method is to judge the laser disc kind with two stages.Phase one is the amplitude that utilizes focusing error (focus error) signal, isolates the repeatedly multi-functional laser disc of burning numerical digit earlier.Open the thunder laser beam of CD-ROM device earlier, move up and down read/write head (pick-up head abbreviates PUH as) then, will produce the focusing error signal.The amplitude of focusing error signal is directly proportional with the reflectivity of laser disc (reflectivity), and repeatedly the reflectivity of the multi-functional laser disc of burning numerical digit is minimum, therefore can utilize less focusing error signal amplitude that it is separated.
See also shown in Figure 1ly, the focusing error signal is to be denoted as 101 curve, the 102nd, and the ultimate value of read-only and the multi-functional laser disc of single burning numerical digit, the 103rd, the ultimate value of the multi-functional laser disc of burning numerical digit repeatedly.As long as the peak of focusing error signal less than the ultimate value 103 of the multi-functional laser disc of burning numerical digit repeatedly, just can judge that the laser disc of putting at present is repeatedly the multi-functional laser disc of burning numerical digit to peak voltage (peak-to-peak voltage).
Tell repeatedly after the multi-functional laser disc of burning numerical digit, the subordinate phase of classic method is to utilize DVD-R and the default hole data (land pre-pit information) of the distinctive burr of DVD-RW, and DVD+R and the distinctive default groove address data of DVD+RW (address in pre-grooveinformation), distinguish the multi-functional laser disc of numerical digit of read-only and single burning.Repeatedly the multi-functional laser disc of the numerical digit of burning distinguishes in the phase one, need not consider in this stage.Therefore, as long as can read the default hole data of burr or default groove address data, be exactly the multi-functional laser disc of single burning numerical digit, otherwise be exactly the multi-functional laser disc of read-only numerical digit.
Seeing also shown in Figure 2ly, is the multi-functional laser disc kind of the numerical digit determination methods process flow diagram of prior art.Detailed step as for traditional determination methods, at first, step 202 can be opened thunder laser beam, move up and down read/write head, to produce the focusing error signal, the peak that maximal value and the minimum value that step 204 can detecting focusing error signal then, step 206 can be checked the focusing error signal to peak voltage whether less than the ultimate value of no CD-RW discsCD-RW.If step 208 can not put CD-RW discsCD-RW in the judgement CD-ROM device.
If the peak of focusing error signal is to the ultimate value of peak voltage more than or equal to no CD-RW discsCD-RW, the peak that following step 210 can be checked the focusing error signals to peak voltage whether less than the ultimate value of the multi-functional laser disc of burning numerical digit repeatedly.If step 212 can judge that the CD-RW discsCD-RW put into is the multi-functional laser disc of burning numerical digit repeatedly.
Distinguish repeatedly after the multi-functional laser disc of burning numerical digit, step 214 can be proofreaied and correct (calibration) and be followed rail actions such as (tracking), and this is to prepare for the data that reads of back.Then step 216 can check whether the laser disc of inserting can read default hole data of burr or default groove address data, if can, step 218 can judge that the laser disc of inserting is the multi-functional laser disc of single burning numerical digit, otherwise step 220 can judge that the laser disc of inserting is the multi-functional laser disc of read-only numerical digit.
Traditional determination methods has many shortcomings, the first when the read/write head bad, the focusing error signal quality that reads also with reduction (as the skew of signal amplitude size), therefore improve the erroneous judgement probability.It two is to occur the multi-functional laser disc of the extra high repeatedly burning of reflectivity numerical digit once in a while, or low especially read-only or the multi-functional laser disc of single burning numerical digit of reflectivity, and this moment, classic method was judged by accident possibly.Its three, if because the problem on hardware or the firmware makes default hole data of burr or default groove address data be difficult for reading, the single burning or repeatedly the multi-functional laser disc of burning numerical digit just be mistaken for the multi-functional laser disc of read-only numerical digit probably.The 4th shortcoming, read the step of default hole data of burr and default groove address data, it is the stage casing that is positioned at start-up routine (servo-on process), therefore the multi-functional laser disc of read-only numerical digit must just can be judged kind through many steps, and after judging disc kind, also to reenter start-up routine and could can waste many times like this actions such as video disc read.
By above explanation as can be known, we need better method to overcome many shortcomings of classic method, improve the accuracy of judging, and shorten judgement time.
This shows that the multi-functional laser disc kind of above-mentioned existing numerical digit determination methods still has many defectives, and demands urgently further being improved.In order to solve the defective of the multi-functional laser disc kind of existing numerical digit determination methods, relevant manufacturer there's no one who doesn't or isn't seeks solution painstakingly, but does not see always that for a long time suitable design finished by development, and this obviously is the problem that the anxious desire of relevant dealer solves.
Because the defective that the multi-functional laser disc kind of above-mentioned existing numerical digit determination methods exists, the inventor is based on being engaged in this type of product design manufacturing abundant for many years practical experience and professional knowledge, actively studied innovation, in the hope of founding the multi-functional laser disc kind of a kind of new numerical digit determination methods, can improve the multi-functional laser disc kind of general existing numerical digit determination methods, make it have more practicality.Through constantly research, design, and after studying repeatedly and improving, create the present invention who has practical value finally.
Summary of the invention
The objective of the invention is to, overcome the defective that the multi-functional laser disc kind of existing numerical digit determination methods exists, and provide the multi-functional laser disc kind of a kind of new numerical digit determination methods, technical matters to be solved be make its can overcome video disc and read/write head quality etc. become because of influence, improve the accuracy of judging, and shorten and judge the read-only numerical digit required time of multi-functional laser disc, thereby be suitable for practicality more, and have the value on the industry.
The object of the invention to solve the technical problems realizes by the following technical solutions.According to the multi-functional laser disc kind of a kind of numerical digit determination methods that the present invention proposes, it comprises the following steps: to read a tracking error signal from the multi-functional laser disc of a numerical digit; And if the amplitude of this tracking error signal greater than one first default value, judges that then the multi-functional laser disc of this numerical digit is the multi-functional laser disc of single burning numerical digit.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
The multi-functional laser disc kind of aforesaid numerical digit determination methods, the producing method of wherein said tracking error signal be selected from one of following: difference formula push-pull fashion and difference formula detecting phase mode.
The multi-functional laser disc kind of aforesaid numerical digit determination methods, it more comprises: the multi-functional laser disc of this numerical digit reads a RECD signal certainly; And, judge that then the multi-functional laser disc of this numerical digit is the blank multi-functional laser disc of repeatedly burning numerical digit if this RECD signal is zero.
The multi-functional laser disc kind of aforesaid numerical digit determination methods, wherein said RECD signal is to produce by a RF signal of analyzing from this numerical digit CD-RW discsCD-RW, if this RF signal strength is greater than a predetermined value, just setting this RECD signal is one for high or its value, otherwise just to set this RECD signal be low or its value is zero.
The multi-functional laser disc kind of aforesaid numerical digit determination methods, it more comprises: the multi-functional laser disc of this numerical digit reads a summed intensity signal certainly; And if this summed intensity signal greater than one second default value, judges that then the multi-functional laser disc of this numerical digit is the multi-functional laser disc of read-only numerical digit, otherwise judge that the multi-functional laser disc of this numerical digit is the multi-functional laser disc of repeatedly burning numerical digit of burning data.
The multi-functional laser disc kind of aforesaid numerical digit determination methods, wherein said summed intensity signal are for detected the totalling of the resulting at least one signal of the multi-functional laser disc of this numerical digit by optical read head.
The object of the invention to solve the technical problems also adopts following technical scheme to realize.According to the multi-functional laser disc kind of a kind of numerical digit determination methods that the present invention proposes, it comprises the following steps: to read a tracking error signal from the multi-functional laser disc of a numerical digit; And, judge that just the multi-functional laser disc of this numerical digit is the multi-functional laser disc of single burning numerical digit when the size of this tracking error signal during greater than a critical value.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.The multi-functional laser disc kind of aforesaid numerical digit determination methods, the producing method of wherein said tracking error signal be selected from one of following: push-and-pull of difference formula and difference formula detecting phase.
The object of the invention to solve the technical problems also adopts following technical scheme to realize.According to the multi-functional laser disc kind of a kind of numerical digit determination methods that the present invention proposes, it comprises the following steps: to read a RECD signal from the multi-functional laser disc of a numerical digit; And, judge that then the multi-functional laser disc of this numerical digit is the blank multi-functional laser disc of repeatedly burning numerical digit if this RECD signal is zero.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.The multi-functional laser disc kind of aforesaid numerical digit determination methods, wherein said RECD signal is to produce by a RF signal of analyzing from this numerical digit CD-RW discsCD-RW, if this RF signal strength is greater than a predetermined value, just setting this RECD signal is one for high or its value, otherwise just to set this RECD signal be low or its value is zero.
The object of the invention to solve the technical problems also adopts following technical scheme to realize.According to the multi-functional laser disc kind of a kind of numerical digit determination methods that the present invention proposes, it comprises following: read a summed intensity signal from the multi-functional laser disc of a numerical digit; And if this summed intensity signal greater than a default value, judges that then the multi-functional laser disc of this numerical digit is the multi-functional laser disc of read-only numerical digit, otherwise judge that just the multi-functional laser disc of this numerical digit is the multi-functional laser disc of repeatedly burning numerical digit of burning data.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.The multi-functional laser disc kind of aforesaid numerical digit determination methods, wherein said summed intensity signal are for detected the totalling of the resulting at least one signal of the multi-functional laser disc of this numerical digit by optical read head.
The present invention compared with prior art has tangible advantage and beneficial effect.By above technical scheme as can be known, in order to reach aforementioned goal of the invention, major technique of the present invention thes contents are as follows:
The present invention proposes the multi-functional laser disc kind of a kind of numerical digit determination methods, key step is: read a tracking error signal from the multi-functional laser disc of a numerical digit, if the amplitude of tracking error signal judges then that greater than one first default value the multi-functional laser disc of above-mentioned numerical digit is the multi-functional laser disc of single burning numerical digit; Otherwise, read a RECD signal, if the RECD signal is zero, judge that then the multi-functional laser disc of above-mentioned numerical digit is the blank multi-functional laser disc of repeatedly burning numerical digit; Otherwise, read a summed intensity signal, if the summed intensity signal greater than one second default value, is judged that the multi-functional laser disc of above-mentioned numerical digit is the multi-functional laser disc of read-only numerical digit, otherwise is judged as the multi-functional laser disc of repeatedly burning numerical digit of burning data.
From another viewpoint, the present invention proposes the multi-functional laser disc kind of several numerical digits determination methods in addition, comprises following key step respectively: according to a tracking error signal, judge whether the multi-functional laser disc of a numerical digit is the multi-functional laser disc of single burning numerical digit; According to a RECD signal, judge whether the multi-functional laser disc of above-mentioned numerical digit is the blank multi-functional laser disc of repeatedly burning numerical digit; And, among the multi-functional laser disc of repeatedly burning numerical digit and the multi-functional laser disc of read-only numerical digit of burning data, judge the kind of numerical digit multifunctional light dish according to a summed intensity signal.
By technique scheme, the present invention has following advantage at least: the multi-functional laser disc kind of numerical digit of the present invention determination methods, the basis for estimation of its use is different with prior art, the signal that is used for judging more is not vulnerable to video disc and read/write head quality etc. and becomes because of influence, and the method for the present invention's proposition, can just tell the multi-functional laser disc of read-only numerical digit in the beginning of start-up routine, technology before the Sixian does not need spended time to follow steps such as rail and correction.Therefore can overcome the shortcoming of prior art, high accuracy of judgement degree is arranged, and can significantly shorten the read-only numerical digit required time of multi-functional laser disc of judging.
In sum, the multi-functional laser disc kind of the numerical digit that the present invention is special determination methods, it has high accuracy of judgement degree, and can significantly shorten the read-only numerical digit required time of multi-functional laser disc of judging.It has above-mentioned many advantages and practical value, and in class methods, do not see have similar design to publish or use and really genus innovation, no matter it is all having bigger improvement on method or on the function, have large improvement technically, and produced handy and practical effect, and the multi-functional laser disc kind of more existing numerical digit determination methods has the multinomial effect of enhancement, thus be suitable for practicality more, and have the extensive value of industry, really be a new and innovative, progressive, practical new design.
Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of instructions, below with preferred embodiment of the present invention and conjunction with figs. describe in detail as after.
Description of drawings
Fig. 1 is the synoptic diagram of focusing error signal.
Fig. 2 is the multi-functional laser disc kind of the numerical digit of a prior art determination methods process flow diagram.
Fig. 3 is the process flow diagram of an embodiment of the multi-functional laser disc kind of the numerical digit determination methods that proposes of the present invention.
101: the focusing error signal
102: the ultimate value of read-only and the multi-functional laser disc of single burning numerical digit
103: the ultimate value of the multi-functional laser disc of burning numerical digit repeatedly
202: produce the focusing error signal
204: the size of detecting focusing error signal
206: is the peak to the ultimate value of peak voltage less than no CD-RW discsCD-RW?
208: no CD-RW discsCD-RW
210: the peak to peak voltage less than the ultimate value of the multi-functional laser disc of burning numerical digit repeatedly?
212: the multi-functional laser disc of burning numerical digit repeatedly
214: proofread and correct and follow actions such as rail
216: can read default hole data of burr or default groove address data?
218: the multi-functional laser disc of single burning numerical digit
220: the multi-functional laser disc of read-only numerical digit
302: read the tracking error signal
304: is the amplitude of tracking error signal greater than default value?
306: the multi-functional laser disc of single burning numerical digit
308: read the RECD signal
310：RECD＝0？
312: the blank multi-functional laser disc of repeatedly burning numerical digit
314: read the summed intensity signal
316: is the summed intensity signal greater than default value?
318: the multi-functional laser disc of read-only numerical digit
320: the multi-functional laser disc of repeatedly burning numerical digit of burning data
Embodiment
Below in conjunction with accompanying drawing and preferred embodiment, to its concrete grammar step of the multi-functional laser disc kind of numerical digit determination methods, feature and the effect thereof that foundation the present invention proposes, describe in detail as after.
With preferred embodiment, the multi-functional laser disc of numerical digit (digitalversatile disc is abbreviated as DVD) the kind determination methods that the present invention proposes is described below.Present embodiment is to distinguish the multi-functional laser disc of read-only numerical digit (DVD ROM, ROM are the abbreviation of read only memory), the multi-functional laser disc of single burning numerical digit (DVD-R and DVD+R) and the multi-functional laser disc of burning numerical digit (DVD-RW and DVD+RW) repeatedly with three phases.This three phases below is described respectively.
First stage is an amplitude size of utilizing tracking error (tracking error) signal when not finishing the lock rail as yet, distinguishes the multi-functional laser disc of single burning numerical digit.The tracking error signal has two kinds of producing methods, default producing method is difference formula push-and-pull (differential push-pull, DPP), be to go up the reflected light beam intensities difference that each zone reads according to read/write head (pick-up head), calculate the tracking error signal.Another kind of mode is that (differential phasedetection DPD), is the folded light beam phase difference that reads according to each zone of read/write head to difference formula detecting phase, calculates the tracking error signal.These two kinds of modes (DPP and DPD) all are known techniques, are not described in detail in this.
According to the specification of three kind DVD, the gauge of the multi-functional laser disc of read-only numerical digit is very little, and near positive circular, therefore the tracking error signal that generates is very little.The multi-functional laser disc of burning numerical digit repeatedly, because reflectivity (reflectivity) is low, and initial gain sets the relation of (initial gainssetting), the tracking error signal that generates is also very little.Yet the tracking error signal of the multi-functional laser disc of single burning numerical digit is more a lot of than other two kinds big.Therefore be easy to just can correctly judge the multi-functional laser disc of single burning numerical digit.
Second stage of present embodiment is to utilize the RECD signal region to tell the blank multi-functional laser disc of repeatedly burning numerical digit.At this, the RECD signal is by the signal of detecting from CD-RW discsCD-RW reflected that laser light produced for a kind of.Can change the characteristic that stores data in the CD-RW discsCD-RW partly owing to whether store data, therefore storing the RF signal that the data CD-RW discsCD-RW produced can be greater than the CD-RW discsCD-RW that does not store data.By this, can utilize analysis to produce the RECD signal,, otherwise then be made as " low " or its value is zero if just the RECD signal to be made as " high " or its value greater than a predetermined value be one to RF signal value from the size of the RF of CD-RW discsCD-RW signal.By this, present embodiment just can see through the RECD signal, and directly whether differentiation is the blank multi-functional laser disc of repeatedly burning numerical digit.
The three phases of present embodiment is to utilize summed intensity (RF level) signal, and the reflection strength summation that read of each zone of read/write head is just distinguished the read-only and the multi-functional laser disc of repeatedly burning numerical digit of burning data.Because the burning process can change the character of the material on DVD surface, therefore whether there is the reflectivity difference of DVD of burning very big, cause the summed intensity signal of the multi-functional laser disc of repeatedly burning numerical digit of burning data, more much smaller than the multi-functional laser disc of read-only numerical digit, therefore be easy to just can accurately distinguish this two kinds.At this, RF level signal is meant by the totalling of the resultant signal of optical read head (can be the totalling of all signals or the totalling of part signal).
Seeing also shown in Figure 3ly, is the detailed process of present embodiment.At first, step 302 can judge that the multi-functional laser disc of numerical digit of kind reads the tracking error signal from needs, and step 304 can check that whether the amplitude of tracking error signal is greater than a certain default value then.If step 306 can the decision judged result be the multi-functional laser disc of single burning numerical digit.Thus much, be exactly first above-mentioned stage.
If not the multi-functional laser disc of single burning numerical digit, step 308 can read the RECD signal from the multi-functional laser disc of above-mentioned numerical digit, and step 310 can check whether the RECD signal is zero then.If step 312 can the decision judged result be the blank multi-functional laser disc of repeatedly burning numerical digit.From step 308 thus much, be exactly second above-mentioned stage.
The multi-functional laser disc of repeatedly burning numerical digit if not blank, step 314 can read the summed intensity signal from the multi-functional laser disc of above-mentioned numerical digit, whether step 316 can check the summed intensity signal greater than a certain default value then, this default value and step 304 different.If step 318 can the decision judged result be the multi-functional laser disc of read-only numerical digit, otherwise step 320 can the decision judged result be the multi-functional laser disc of repeatedly burning numerical digit of burning data.From step 314 thus much, be exactly above-mentioned three phases.
By the explanation of above embodiment as can be known, judgement basis of the present invention is tracking error signal, RECD signal and summed intensity signal, employed complete different with prior art, these three kinds of signals more are not vulnerable to video disc and read/write head quality etc. and become because of influence, and the signal size differences between variety classes DVD video disc is also comparatively obvious.And signal used in the present invention all is relevant from the own size of signal of video disc reflection etc. with laser, and need just can know through the signal of further resolving from the CD-RW discsCD-RW reflection unlike default hole data of the employed burr of known techniques and default groove address data, therefore the present invention can just tell the multi-functional laser disc of read-only numerical digit in the beginning of start-up routine (servo-on process), technology before the Sixian does not need spended time to follow rail (tracking) and correction steps such as (calibration).Therefore the present invention can overcome the shortcoming of prior art, and high accuracy of judgement degree is arranged, and can significantly shorten the read-only numerical digit required time of multi-functional laser disc of judging.
In addition, though the foregoing description is to use tracking error signal, RECD signal and summed intensity signal to distinguish the kind of judging CD-RW discsCD-RW in regular turn, the present invention is not limited to this.Other embodiments of the invention also can only be used tracking error signal, RECD signal or summed intensity signal to judge the CD-RW discsCD-RW kind respectively, or judge the kind of CD-RW discsCD-RW at least with any two of using in order above-mentioned three signals.The difference of minority is, the signal kind of use is many more, and that just the kind of CD-RW discsCD-RW can be judged is more accurate; Also have, when using identical signal with different order, the effect that may judge has difference.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, though the present invention discloses as above with preferred embodiment, yet be not in order to limit the present invention, any those skilled in the art, in not breaking away from the technical solution of the present invention scope, when the method that can utilize above-mentioned announcement and technology contents are made a little change or be modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solution of the present invention, according to technical spirit of the present invention to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solution of the present invention.
Claims (12)
1, the multi-functional laser disc kind of a kind of numerical digit determination methods is characterized in that: comprise the following steps:
Read a tracking error signal from the multi-functional laser disc of a numerical digit; And
If the amplitude of this tracking error signal judges then that greater than one first default value the multi-functional laser disc of this numerical digit is the multi-functional laser disc of single burning numerical digit.
2, the multi-functional laser disc kind of numerical digit according to claim 1 determination methods, the producing method that it is characterized in that wherein said tracking error signal be selected from one of following: difference formula push-pull fashion and difference formula detecting phase mode.
3, the multi-functional laser disc kind of numerical digit according to claim 1 determination methods is characterized in that it more comprises:
Read a RECD signal from the multi-functional laser disc of this numerical digit; And
If this RECD signal is zero, judge that then the multi-functional laser disc of this numerical digit is the blank multi-functional laser disc of repeatedly burning numerical digit.
4, the multi-functional laser disc kind of numerical digit according to claim 3 determination methods, it is characterized in that wherein said RECD signal is to produce by a RF signal of analyzing from this numerical digit CD-RW discsCD-RW, if this RF signal strength is greater than a predetermined value, just setting this RECD signal is one for high or its value, otherwise just to set this RECD signal be low or its value is zero.
5, the multi-functional laser disc kind of numerical digit according to claim 3 determination methods is characterized in that it more comprises:
Read a summed intensity signal from the multi-functional laser disc of this numerical digit; And
If this summed intensity signal is greater than one second default value, judges that then the multi-functional laser disc of this numerical digit is the multi-functional laser disc of read-only numerical digit, otherwise judge that the multi-functional laser disc of this numerical digit is the multi-functional laser disc of repeatedly burning numerical digit of burning data.
6, the multi-functional laser disc kind of numerical digit according to claim 5 determination methods is characterized in that wherein said summed intensity signal is for detected the totalling of the resulting at least one signal of the multi-functional laser disc of this numerical digit by optical read head.
7, the multi-functional laser disc kind of a kind of numerical digit determination methods is characterized in that it comprises the following steps:
Read a tracking error signal from the multi-functional laser disc of a numerical digit; And
When the size of this tracking error signal during, judge that just the multi-functional laser disc of this numerical digit is the multi-functional laser disc of single burning numerical digit greater than a critical value.
8, the multi-functional laser disc kind of numerical digit according to claim 7 determination methods, the producing method that it is characterized in that wherein said tracking error signal be selected from one of following: push-and-pull of difference formula and difference formula detecting phase.
9, the multi-functional laser disc kind of a kind of numerical digit determination methods is characterized in that it comprises the following steps:
Read a RECD signal from the multi-functional laser disc of a numerical digit; And
If this RECD signal is zero, judge that then the multi-functional laser disc of this numerical digit is the blank multi-functional laser disc of repeatedly burning numerical digit.
10, the multi-functional laser disc kind of numerical digit according to claim 9 determination methods, it is characterized in that wherein said RECD signal is to produce by a RF signal of analyzing from this numerical digit CD-RW discsCD-RW, if this RF signal strength is greater than a predetermined value, just setting this RECD signal is one for high or its value, otherwise just to set this RECD signal be low or its value is zero.
11, the multi-functional laser disc kind of a kind of numerical digit determination methods, it is following to it is characterized in that it comprises:
Read a summed intensity signal from the multi-functional laser disc of a numerical digit; And
If this summed intensity signal is greater than a default value, judges that then the multi-functional laser disc of this numerical digit is the multi-functional laser disc of read-only numerical digit, otherwise judge that just the multi-functional laser disc of this numerical digit is the multi-functional laser disc of repeatedly burning numerical digit of burning data.
12, the multi-functional laser disc kind of numerical digit according to claim 11 determination methods is characterized in that wherein said summed intensity signal is for detected the totalling of the resulting at least one signal of the multi-functional laser disc of this numerical digit by optical read head.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US57466504P | 2004-05-25 | 2004-05-25 | |
| US60/574,665 | 2004-05-25 |
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| CN1637909A true CN1637909A (en) | 2005-07-13 |
| CN1324597C CN1324597C (en) | 2007-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB200410088448XA Active CN1312690C (en) | 2004-05-25 | 2004-10-29 | Sorts recognition method and device for digital multifunctional optical discs |
| CNB200410061584XA Active CN1324597C (en) | 2004-05-25 | 2004-12-27 | Sorts recognition method and device for digital multifunctional optical discs |
| CNB2005100719792A Active CN100367367C (en) | 2004-05-25 | 2005-05-25 | Method for determining type of digital versatile disc |
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| CNB200410088448XA Active CN1312690C (en) | 2004-05-25 | 2004-10-29 | Sorts recognition method and device for digital multifunctional optical discs |
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| CNB2005100719792A Active CN100367367C (en) | 2004-05-25 | 2005-05-25 | Method for determining type of digital versatile disc |
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| CN (3) | CN1312690C (en) |
| BR (1) | BRPI0418821A (en) |
| RU (2) | RU2006141413A (en) |
| TW (3) | TWI340964B (en) |
| WO (1) | WO2005117009A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7570561B2 (en) | 2004-05-25 | 2009-08-04 | Bryan Tai | Method for determining type of digital versatile discs |
| US7602684B2 (en) | 2003-09-15 | 2009-10-13 | Chun-Ta Chen | Discriminating method of an optical disc device for ascertaining the format of a loaded optical disc |
| US7626907B2 (en) | 2004-05-25 | 2009-12-01 | Ricky Chang | Method and apparatus for determining type of digital versatile disc |
| US7746745B2 (en) | 2004-05-25 | 2010-06-29 | Ricky Chang | Method for determining the type of digital versatile disc |
| US7843786B2 (en) | 2002-10-24 | 2010-11-30 | Yi-Chung Chan | Discrimination method of optical storage medium |
| US7995434B2 (en) | 2003-10-31 | 2011-08-09 | Tian Holdings, Llc | Method and apparatus for generating absolute time in pregroove data |
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| JP3831063B2 (en) * | 1997-04-25 | 2006-10-11 | パイオニア株式会社 | Optical disc discrimination device |
| JP2000251280A (en) * | 1999-02-24 | 2000-09-14 | Asahi Optical Co Ltd | Pickup performance measuring method and apparatus for optical disk |
| JP2000322742A (en) * | 1999-05-10 | 2000-11-24 | Matsushita Electric Ind Co Ltd | Optical disk device |
| JP3696044B2 (en) * | 2000-04-21 | 2005-09-14 | 松下電器産業株式会社 | Optical disc apparatus and optical disc discrimination method |
| JP4491943B2 (en) * | 2000-09-22 | 2010-06-30 | ソニー株式会社 | Optical disk drive and optical disk identification method |
| JP4067781B2 (en) * | 2001-04-13 | 2008-03-26 | 株式会社日立エルジーデータストレージ | Disc player |
| JP2003078392A (en) * | 2001-09-04 | 2003-03-14 | Sony Corp | Automatic follow-up type band-pass filter and optical disk reproducing device |
| JP3981559B2 (en) * | 2002-01-24 | 2007-09-26 | 株式会社日立エルジーデータストレージ | Optical disc apparatus and disc discrimination method thereof |
| JP2004110901A (en) * | 2002-09-17 | 2004-04-08 | Sanyo Electric Co Ltd | Method for determining type of disk, and disk device |
| CN100337280C (en) * | 2004-02-17 | 2007-09-12 | 联发科技股份有限公司 | Method for distinguishing optical disk form |
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2004
- 2004-09-15 TW TW093127819A patent/TWI340964B/en active
- 2004-10-06 TW TW93130202A patent/TWI307494B/en active
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7843786B2 (en) | 2002-10-24 | 2010-11-30 | Yi-Chung Chan | Discrimination method of optical storage medium |
| US7602684B2 (en) | 2003-09-15 | 2009-10-13 | Chun-Ta Chen | Discriminating method of an optical disc device for ascertaining the format of a loaded optical disc |
| US7995434B2 (en) | 2003-10-31 | 2011-08-09 | Tian Holdings, Llc | Method and apparatus for generating absolute time in pregroove data |
| US7570561B2 (en) | 2004-05-25 | 2009-08-04 | Bryan Tai | Method for determining type of digital versatile discs |
| US7626907B2 (en) | 2004-05-25 | 2009-12-01 | Ricky Chang | Method and apparatus for determining type of digital versatile disc |
| US7746745B2 (en) | 2004-05-25 | 2010-06-29 | Ricky Chang | Method for determining the type of digital versatile disc |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2005117009A1 (en) | 2005-12-08 |
| TWI253060B (en) | 2006-04-11 |
| TWI307494B (en) | 2009-03-11 |
| CN1324597C (en) | 2007-07-04 |
| CN1601639A (en) | 2005-03-30 |
| TW200539115A (en) | 2005-12-01 |
| CN1312690C (en) | 2007-04-25 |
| RU2006140292A (en) | 2008-06-27 |
| CN100367367C (en) | 2008-02-06 |
| TW200539116A (en) | 2005-12-01 |
| CN1700311A (en) | 2005-11-23 |
| TW200539114A (en) | 2005-12-01 |
| RU2006141413A (en) | 2008-06-27 |
| TWI340964B (en) | 2011-04-21 |
| BRPI0418821A (en) | 2007-11-13 |
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