CN1209762C - Determination of optimal rewriting power - Google Patents
Determination of optimal rewriting power Download PDFInfo
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- CN1209762C CN1209762C CNB021428905A CN02142890A CN1209762C CN 1209762 C CN1209762 C CN 1209762C CN B021428905 A CNB021428905 A CN B021428905A CN 02142890 A CN02142890 A CN 02142890A CN 1209762 C CN1209762 C CN 1209762C
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Abstract
The present invention provides a method for measuring optimal recording power, which can be applied to recording type storage media such as a repeatable recording type optical disc. The method for measuring optimal recording power utilizes the characteristic that the repeatable recording type optical disc can be repeatedly record to simultaneously measure different recording power of the recording power measuring area of the inner circle of the optical disc and some data recording areas; sequentially, the data recording areas of the storage media are record according to the obtained optimal recording power data, for example, the relation graph of the optimal recording power and the distance from the recording position to the center of a disk sheet is established by an interpolation method by utilizing the obtained a plurality of optimal recording power values so that an optical drive can select the optimal recording power by aiming at different recording positions when normally recording data.
Description
Technical field
The present invention relates to a kind of best recording power method for measuring, and be particularly related to the best recording power method for measuring that can repeat imprinting formula discs, can find out its best recording power at the optional position of discs.
Background technology
The so-called imprinting formula discs (rewritable disk such as CD-RW) that repeats is meant that discs can be repeated to write different data, and being different from can only imprinting recordable CD (recordable disk such as CD-R) once.Can repeat imprinting formula discs or recordable CD no matter be, before CD-ROM drive is done formal engraving data, all must do so-called best recording power earlier and measure (OptimalPower Calibration, be called for short OPC), to learn the best recording power of required use.The mensuration of the best recording power of common discs all is to carry out being positioned in the power measurement block of discs inner ring (PowerCalibration Area is called for short PCA).The process flow diagram flow chart that common best recording power is measured as shown in Figure 1.Please refer to Fig. 1, at first, read/write head skips to the counting region (step 100) that the recording power that is arranged in inner ring is measured the zone earlier, reads at present by the number of blocks of imprinting, with the number of times (step 110) of learning that blank recording power mensuration regional address and disc be OPC.Then the read/write head of recorder skips to this blank recording power and measures zone (step 120), begins to carry out the mensuration of 15 kinds of different recording powers.Recorder utilizes 15 kinds of recording powers that 15 (frame) test datas are write blank recording power earlier and measures in the zone (step 130).Recorder has just begun the position that writes with the read/write head rebound afterwards, these test datas is read, to judge best recording power why (step 140,150,160).Recorder is convenient afterwards advances (step 170,180,190) in the discs with this measured best recording power data carving that all are to be written.The disc that this external cause is general is normally following, can only be carved 100 times at most, so wherein step 180 can (be upgraded this disc by the number of times of imprinting in the counting region on the count area.
Common such measuring light disc optimum recording power method can only be applicable to static line speed imprinting mode (Constant Linear Velocity, be called for short CLV), and be not suitable for fixed angles speed imprinting mode (Constant Angular Velocity, be called for short CAV).Its reason is that CD-ROM drive employed imprinting linear velocity when imprinting CDs the Internal and external cycle of sheet is different under CAV, and its imprinting linear velocity is directly proportional with the distance of its imprinting position to the disc center.Under the situation of fixed angles speed, the etch-recording speed of general optical disk outer ring can reach about 2.5 times of inner ring etch-recording speed, such gap makes that the zone is measured knows that best recording power carries out imprinting, leads to the failure easily to CD-ROM drive if use is measured at the recording power of inner ring when carrying out the outer ring imprinting.Be with, present imprinting mode all is to carry out in the mode of static line speed, compared to the mode of fixed angles speed, the imprinting mode of static line speed need spend the more time.In addition,, different recording powers are arranged, also easily cause the imprinting failure if can not react the material difference even if the imprinting mode of employing static line speed also may have different demands to best recording power because the material of discs Internal and external cycle is different.And a common best recording power mensuration mode power is measured the best recording power that is applicable to the disc inner ring.
Summary of the invention
The object of the present invention is to provide a kind of best recording power method for measuring, can be applicable to repeat the Storage Media of imprinting.This recording power assay method utilizes this Storage Media can repeat the characteristic of imprinting, records the best recording power of the optional position in the Storage Media.Thus, no matter be to use the imprinting mode of any constant speed degree, or at the different imprinting material of discs Internal and external cycle, CD writer can use best recording power to carry out the action of data carving at different imprinting positions.
For reaching above-mentioned and other purpose, the invention provides a kind of best recording power method for measuring, the method be applied to the recordable type Storage Media as: can repeat imprinting formula discs.The same with general etch-recordable optical disk sheet, can repeat imprinting formula discs and comprise a recording power mensuration zone and general data imprinting zone that is positioned at inner ring.This imprinting assay method is at first measured the zone at recording power and is carried out general recording power mensuration action, then select a plurality of block to carry out a kind of special recording power and measure action, thereby can obtain the best recording power of these block in general data imprinting zone.This method last, best recording power data according to gained, imprinting is carried out in data carving zone to Storage Media, for example: utilize interpolation method to obtain a best recording power and imprinting position graph of relation, the best recording power reference diagram during as normal imprinting in the future to the distance at disc center.This imprinting power measurement method makes that CD-ROM drive can be at the recording power of present imprinting choice of location the best when doing normal data carving.The method can be supported the imprinting mode of fixed angles speed, to promote the speed of engraving data.
According to preferred embodiment of the present invention, above-mentioned special recording power is measured and is adopted " Sub Q codemode 0 " to advance the data of discs as measuring time institute's imprinting.The purpose of this way is to make those be used for doing block that recording power measures still to be in removing state (erase) after recording power is measured finishing, and therefore can not misread into normal data or disturb normal data to read.This imprinting power measurement method utilization can repeat the characteristic that imprinting formula discs can repeat imprinting, measure the best recording power of optional position on the discs, no matter make that the CD burning action is the static line speed or the imprinting mode of fixed angles speed, all used best recording power that the block of all positions on the disc is carried out the imprinting action.
For above and other objects of the present invention, feature and advantage can be become apparent, a preferred embodiment cited below particularly, and conjunction with figs. is described in detail below.
Description of drawings
Fig. 1 shows a kind of schematic flow sheet of common best recording power assay method;
Fig. 2 A and Fig. 2 B show the schematic flow sheet of the best recording power assay method of preferred embodiment according to the present invention;
Recording power is measured the planning synoptic diagram of block on the repeated imprinting formula discs of Fig. 3 demonstration preferred embodiment according to the present invention;
Fig. 4 shows in the preferred embodiment of the present invention and measures the best recording power curve synoptic diagram that obtains at any discs position.
Wherein, description of reference numerals is as follows:
310 original recording powers are measured the zone
320 data fields of desiring to write
330 the present invention best recording power of planning arbitrarily measure block
Embodiment
Shown in Fig. 2 A and Fig. 2 B, be schematic flow sheet according to the best recording power assay method of a preferred embodiment of the present invention.Please in the lump with reference to figure 3, recording power assay method proposed by the invention at first skips to read/write head the original recording power that is positioned at the discs inner ring and measures zone 310, read wherein recording power tester numerical value, to learn the recording power testing time that had carried out, calculate blank recording power and measure regional location (step 200,205).Then the read/write head of recorder skips to this blank recording power and measures zone (step 210), begins to carry out the mensuration of 15 kinds of different recording powers.Recorder utilizes 15 kinds of recording powers that 15 (frame) test datas are write blank recording power earlier and measures in the zone (step 215).Then rebound has just begun to write the position of test data, these test datas is read, with the best recording power of judging the discs inner ring why (step 220,225,230).Recorder is convenient afterwards carries out once imprinting with this measured inner ring the best recording power and moves in the counting region (step 235,240), what deserves to be mentioned is because of general disc normal down, can only be carved 100 times at most, so wherein step 240 can (count area) go up this disc of renewal by the number of times of imprinting in the counting region.
Shown in Fig. 2 B, recorder begins other position of discs is carried out the test action of best recording power after finishing the test imprinting of inner ring.Refer again to Fig. 3, recorder is selected some block 330 in data area 320 to be written, all utilize 15 kinds of different recording powers at each block, 15 " Sub Q code mode 0 " data are write in these block, in order to the best recording power of judging these block positions why (step 245,250,255,260,265).The selection of these block can be to be dispersed in fifty-fifty in the white space scope 320.
At last, shown in Fig. 2 B, the method is utilized several measured best powers, and use interpolation method to set up a best recording power and the imprinting position graph of relation (step 270) to the distance at disc center: Fig. 4 is the synoptic diagram of this graph of a relation.Thus, recorder is in each data of imprinting, and the recording power that can utilize current position to check in a best carries out the imprinting action (step 275) of normal data.And because we write CD when block is carried out the recording power test action is " Sub Qcode mode 0 ", this data layout is can not be regarded as normal data generally reading action.
This imprinting power measurement method utilization can repeat the characteristic that imprinting formula discs can repeat imprinting, measure the best recording power of optional position on the discs, no matter make that the CD burning action is the static line speed or the imprinting mode of fixed angles speed, all used best recording power that the block of all positions on the disc is carried out the imprinting action.
Those of ordinary skills know that present embodiment can repeat imprinting formula Storage Media at repeating imprinting formula discs but can be applicable to all in fact.In addition, present embodiment adopts a plurality of zones to test again and obtains graph of relation with interpolation method, but can utilize other methods of numerical to obtain different graph of relation in fact, or is simplified to and only tests two zones etc.
Though the present invention with preferred embodiment openly as above; so it is not to be used to limit the present invention, any those of ordinary skill in the art, without departing from the spirit and scope of the present invention; can do some equivalences and change and change, so protection scope of the present invention is as the criterion with claim.
Claims (8)
1. a best recording power method for measuring is applied to a recordable type Storage Media, comprises a data carving zone, it is characterized in that this method comprises the following steps:
In this data carving zone, select one first block;
Using a specific engraving data that this first block is carried out recording power measures;
Obtain at the best recording power of one first block of this first block;
In this data carving zone, select one second block;
Using this specific engraving data that this second block is carried out recording power measures;
Obtain at the best recording power of one second block of this second block; And
Utilize the best recording power block position corresponding of gained that imprinting is carried out in this data carving zone of this Storage Media with it,
Wherein this specific engraving data presents a removing state after finishing recording power mensuration, and this removing state will can not be regarded as normal data when reading.
2. best recording power method for measuring as claimed in claim 1 is characterized in that, also comprises the following steps after the step of the best recording power of second block that obtains this second block:
In this data carving zone, select several the 3rd block;
Using this specific engraving data that these several the 3rd block is carried out recording power individually measures; And
Obtain the best recording power of the 3rd block at several correspondences of this several the 3rd block.
3. best recording power method for measuring as claimed in claim 1, it is characterized in that the step of utilizing the best recording power of the gained block position corresponding with it that imprinting is carried out in this data carving zone of this Storage Media adopts the best recording power block position corresponding with it of gained to find out a best recording power and the position relation is carried out imprinting.
4. best recording power method for measuring as claimed in claim 1 is characterized in that, this specific engraving data is the data that meet sub Q mode O form.
5. a best recording power method for measuring is applied to a recordable type Storage Media, and this recordable type Storage Media comprises an imprinting power test zone and a data carving zone, it is characterized in that this method comprises the following steps:
Carrying out recording power at this recording power test zone measures;
The best recording power of an inner ring of obtaining;
In this data carving zone, select one first block;
Using a specific engraving data that this first block is carried out recording power measures;
Obtain at the best recording power of one first block of this first block; And
Utilize best recording power recording power test zone and the block position corresponding of gained that imprinting is carried out in this data carving zone of this Storage Media with it,
Wherein this specific engraving data presents a removing state after finishing recording power mensuration, and this removing state will can not be regarded as normal data in the future when being read.
6. best recording power method for measuring as claimed in claim 5 is characterized in that, also comprises the following steps after the step of the best recording power of first block that obtains this first block:
In this data carving zone, select several second block;
Using this specific engraving data that these several second block is carried out recording power individually measures; And
Obtain the best recording power of second block at several correspondences of this several second block.
7. best recording power method for measuring as claimed in claim 5, it is characterized in that the step of utilizing the best recording power of the gained recording power test zone corresponding with it and block position that imprinting is carried out in this data carving zone of this Storage Media adopts the best recording power of the gained recording power test zone corresponding with it and a best recording power is found out in the block position and the position relation is carried out imprinting.
8. best recording power method for measuring as claimed in claim 5 is characterized in that, this specific engraving data is the data that meet sub Q mode O form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021428905A CN1209762C (en) | 2002-09-23 | 2002-09-23 | Determination of optimal rewriting power |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021428905A CN1209762C (en) | 2002-09-23 | 2002-09-23 | Determination of optimal rewriting power |
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| CN1404044A CN1404044A (en) | 2003-03-19 |
| CN1209762C true CN1209762C (en) | 2005-07-06 |
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| CNB021428905A Expired - Fee Related CN1209762C (en) | 2002-09-23 | 2002-09-23 | Determination of optimal rewriting power |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4406260B2 (en) | 2003-10-30 | 2010-01-27 | 株式会社日立エルジーデータストレージ | Recording power determination method and recording power control method for optical disc apparatus |
| CN101494062B (en) * | 2008-01-24 | 2011-01-12 | 广明光电股份有限公司 | Method for burning CD ROM |
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