CN1466126A - Optimun method for determining optical disc recording power - Google Patents
Optimun method for determining optical disc recording power Download PDFInfo
- Publication number
- CN1466126A CN1466126A CNA021122873A CN02112287A CN1466126A CN 1466126 A CN1466126 A CN 1466126A CN A021122873 A CNA021122873 A CN A021122873A CN 02112287 A CN02112287 A CN 02112287A CN 1466126 A CN1466126 A CN 1466126A
- Authority
- CN
- China
- Prior art keywords
- mentioned
- record
- recording
- opc
- power
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Optical Recording Or Reproduction (AREA)
Abstract
The invention is a optimized method for ascertaining the CD record power: the first period judges the applied record mode when applies for record data; the second period, they are loaded into the testing area of CD and adds a exception space which is allocated by one-time OPC area, adjusts the testing power and scans the electrical level and experiences any data; reappears the recorded experience record in the third period, ascertains the best record light power value from the characters of reappeared signal. The method uses the testing area furthest, carries on precise OPC operation and acquires the correct record light power value, and accomplishes the CD record with the best record light power. It has improvement effect recording the reappearance character of CD, and is very important to the using efficiency of the record mode testing area.
Description
(1) technical field
The present invention relates to a kind of best approach of definite optical disc recording power, maximally utilise CD visual examination field determining more accurate optical recording power, and look for the method for the visual examination record of optimum condition thus.
(2) background technology
In general, recording optical power is because be state or kind according to recording medium, the state of pen recorder (matter of laser, recording method, type of laser and temperature characterisitic etc.) different and different with writing speed, so each pen recorder utilization is recorded in the target record optical power value in the CD, obtain the best titime optical power value earlier, and then carry out recording operation.
Best titime luminous power testing process is described below simply.
Shown in Figure 1 is the formation of the drive unit of general CD, be additional to the numerical data that is transfused to proofreading and correct error code, digital recording signal processor 30a with the record format conversion: CB (Channel Bit) scrambler 40 that the CD with the record format conversion is changed with bit stream again: along with the signal that is transfused to, the CD-ROM driver 41 of output light quantity drive signal.
Along with above-mentioned light quantity drive signal, make signal record at CD 10, again for detect the light picker 20 of tracer signal from record surface.
To carry out filter shapeization from the signal that above-mentioned light picker 20 is detected, and with R/F (radio frequency) device 50 of binary signal output; Make the driver 70 of the driven in rotation motor of above-mentioned light picker 20 and the 10 rotation drivings of above-mentioned CD.
Rotational speed according to the trail-and-error (T.E) in the above-mentioned light picker 20 and focus mistake (F.E) signal and CD 10 is come the servomechanism 60 of Control Driver 70; With the motor synchronizing signal of phase-locking, above-mentioned binary signal is recovered to the digital reproduction signal processor 30b of original data in above-mentioned binary signal; Drive electric rotating machine 11 that CD 10 rotates and by the OPC operation of above-mentioned CD 10 and the microprocessor 80 that comprises control data recoding/reproduction process are constituted.
If in above-mentioned optical disc apparatus, from external input record application signal, then at this moment will carry out the process that optimum power detects by above-mentioned microprocessor 80, its process is as follows:
At first, above-mentioned microprocessor 80 will be provided with the recording configuration program, by above-mentioned servomechanism 60 and driver 70 driven in rotation motors 11, above-mentioned CD 10 rotations be driven.
Following above-mentioned microprocessor 80 will be before data recording is transfused to as shown in Figure 2, and it will read and confirm to be the recording optical power value of target with 3 bits (Bit) W1, W2, W3 data recording in CD 10.Be as the criterion with above-mentioned target record luminous power (as 8mw) value of reading affirmation, make optical power value with as shown in Figure 3, with the conditioning signal that the size by the step size (Δ ρ) of appointment changes, changeability ground introducing CD-ROM driver 41.
The value of above-mentioned Δ ρ is to be benchmark with the above-mentioned CD target record optical power value that has been identified, and makes the optical power change scope for (as 5mw～10mw), considering that simultaneously test data record number of times (15 times) determines its value afterwards.
Above-mentioned CD-ROM driver 41 is corresponding to the optical drive power of above-mentioned approved signal adjustment data, and output allows the test data of 15ATIP be recorded in test section A shown in Figure 4 with the light signal pick-up 20 in above-mentioned to the tracer signal of test data.
Test data among the test section A of light 10 as mentioned above, the optical drive power that changes by the institute sizing and with under the recording status of fixing recording impulse, above-mentioned microprocessor 80 are that the above-mentioned light picker 20 of control makes sequenced the reading of 15ATIP test signal of writing down among the digital test district A in above-mentioned.At this moment, if above-mentioned CD 10 is the disposable CDs (CD-R) that allow to write, above-mentioned microprocessor 80 will be read in order, and calculate asymmetric value when [(A1-A2)/(A1+A2)] * 100.Slice-level=0 { β=} of the reproducing signal of the test data as shown in Figure 5 of filtered shaping from above-mentioned R/F (50).At this moment utilize the β value of being calculated to decide best recording optical power value.
Use best recording optical power value to be determined, above-mentioned microprocessor 80 will utilize the power that is suitable for optical drive according to above-mentioned definite optimum power value in order to write down the input data, pass through control CD-ROM driver 41 for making input data signal.Above-mentioned CD-ROM driver 41 is the signals according to the optical drive electric current, after above-mentioned light picker 20 approvals, along with the modulation to above-mentioned pulse width of cloth signal, with the nondeclarative memory district of signal record at CD 10.Finish recording operation.
But, relevant above-mentioned finish with the optical disc apparatus recording method, when the size in the visual detection district of CD is CD-R, although can distribute, when carrying out an OPC, the limit of interval of test data is fixed on 15ATIP with the size of test data of the 1500ATP of record, ask the best titime optical power value restricted, especially when CD-R, more need the degree of accuracy of video disc recording, but on previous methods, have the problem that does not satisfy this requirement.
Again when similar copy, most of situation is that disposable recording is finished, under these circumstances,, the major part of luminous power inspection do not reduce greatly because being used the precision of recorded instead, thus effective using method in the visual examination district of the recording mode of giving chapter and verse.
(3) summary of the invention
The present invention creates in order to solve the above problems
Farthest utilize the test data recording areas of CD to finish accurate OPC, determine more accurate recording optical power value thus with this.With definite method of providing data recording to form the optimal recording power of optimum condition is its purpose.
In order to achieve the above object, determine that the method for the optimal recording power of CD is, the phase one is differentiated the logging mode that is applied when being the application record data; Subordinate phase is according to above-mentioned differentiation result, in the test section of the CD that is loaded into, between the attached exceptions area that is assigned with OPC interval, adjusts measured power scanning level, and arbitrary data are tested; Reaching the phase III is the above-mentioned test data sheet of writing down of reproduction, determines the best titime optical power value from playback signal characteristic.
Effect of the present invention: the optimal recording power of CD determines that method is to maximally utilise the test section according to the present invention, carry out accurate OPC operation, and obtain correct recording optical power value, finish video disc recording with the recording optical power value of the best thus, the reproducing characteristic of recording disk has the effect of improvement, and plays a part very important according to the service efficiency of logging mode test section.
For further specifying above-mentioned purpose of the present invention, design feature and effect, the present invention is described in detail below with reference to accompanying drawing.
(4) description of drawings
Fig. 1 is the drive unit of general CD
Fig. 2 is the data form at the target record optical power value that allows writing down on the CD that writes down.
When Fig. 3 is record test data, be benchmark, luminous power carried out an example of change shape with the target record optical power value.
Fig. 4 is the tracer signal test-based examination district (A) of recording disk and the count block (B) of testing time.
Fig. 5 is the reproducing signal that is recorded in the tested data on the CD.
Fig. 6 is ACDR (the A luminous power CDRecorder) skeleton diagram by optical disc reproducing apparatus and optical disc recording apparatus constituted.
Fig. 7 is in the pen recorder shown in Figure 6, the OPC summary application drawing of execution.
Fig. 8 a and Fig. 8 b are the process flow diagrams that has the best optical disc recording power of feasibility according to the present invention.
Figure 9 shows that the β value range of video disc recording and the data form of best titime method.
Example shown in Figure 10 is CD visual examination district once to be reached secondary OPC when operation according to the present invention, makes luminous power that the form of change take place.
Figure 11 is in order to detect the disposable beta curve aspect graph that allows to write the best titime optical power value of CD (CD-R).
Figure 12 a and Figure 12 b are another embodiment process flow diagrams according to " method of decision CD optimal recording power " of the present invention.
Figure 13 shows that according to the present invention when carrying out the OPC operation example of change luminous power form in the visual examination district of CD.
(5) embodiment
Below,, be elaborated with reference to the accompanying drawings to the feasibility embodiment of the optimum write power method of determining CD according to the present invention.
The sketch of the ACDR that shown in Figure 6 is optical disc reproducing apparatus (CD-Player) and CD writing station (CD-Recoder) constituted, here the detailed formation of the CD writing station that best wiring method is realized according to the present invention constitutes identical with above-mentioned Fig. 1.
Shown in Figure 7 is roughly to scheme in the OPC operation that the CD writing station of Fig. 6 is finished.
Shown in Fig. 8 a and Fig. 8 b is the flow process degree that optimum write power according to the present invention is determined the feasibility embodiment of method, below with reference to formation and Fig. 7 of the writing station of Fig. 1.Optimum write power according to the present invention to Fig. 8 is determined method, is elaborated.
At first, respectively deposit microprocessor at above-mentioned optical disc reproducing apparatus (CD-P) and CD writing station (CD-R) inside.
Microprocessor in the above-mentioned CD-P microprocessor operation of deciding.Microprocessor in the above-mentioned CD-R is done sub little processing operation.
Under such state, CD is loaded in above-mentioned CD-P and CD-R, then, along with writing of user applied for S10, CD is transcribed key word and is input into microprocessor in the above-mentioned CD-P, and above-mentioned microprocessor passs on the application of duplicating of this CD to the microprocessor in the above-mentioned CD writing station.The data of above-mentioned CD writing station input can be recorded in the CD that is inserted into.
Like this, if at above-mentioned microprocessor 80 record application is arranged, then above-mentioned microprocessor 80 is arranged on driver with recording configuration, makes CD 10 be rotated driving with CLV or CAV mode.Follow above-mentioned microprocessor 80 and confirm target record optical power values (S11) from above-mentioned CD 10 as described above, simultaneously,, promptly determined by benchmark with the recording impulse with the recording method of the state recording of tracer signal at above-mentioned CD 10.Above-mentioned recording method is when making recording medium, with fixed value writing down once allow to write CD (CD-R) time, fix its value as shown in Figure 9 by type recording media.
Generally speaking, when above-mentioned test section (A) is the CD-R CD, because operating, the OPC of the test data of record 15ATIP can carry out 100 times, so can write down the test data of about 1500ATIP degree between above-mentioned test section.
Then, above-mentioned microprocessor (80) is determined along with being applied logging mode, the employed interval of operation OPC, and the promptly above-mentioned logging mode that is applied is under the optical media replication pattern situation (S20); Because the situation that recording disk is finished record by disposable recording is most, so operate at above-mentioned test section (A) general OPC and or else to be utilized after interval in addition, employed interval (15ATIP=15BLOCK) is, above-mentioned microprocessor 80 is that above statement is not to determine the best titime optical power value with the record test data of (15ATIP) like that, but press more than the 15ATIP, promptly to the OPC accurate operation of the interior record test data in 80% interval (about 1200ATIP) of test section (A), if the above-mentioned logging mode that is applied is the general record pattern, when promptly later on above-mentioned test section (A) being carried out the OPC operation again, above-mentioned like that, above-mentioned test section (A) carried out test data by the 15ATIP record and determine the general OPC operation (S30～S32) of best titime optical power value.
Following above-mentioned microprocessor 80 is because present logging mode is the optical media replication pattern, so utilize the interval of about 80% degree of above-mentioned test section (A) to finish accurate OPC operation.
For this, above-mentioned microprocessor 80 as shown in figure 10, at first write down the disposable OPC operation of the test data of 15ATIP at above-mentioned test section A, be above-mentioned, with by above-mentioned luminous power of reading affirmation (as, 8mw) value makes optical power value change with stride degree size (Δ P) degree of appointment for benchmark, and test data is being write down (S21) by 15ATP.At this moment above-mentioned microprocessor 80 allows above-mentioned light picker 20 that the signal level or the duration of recording impulse are kept and record test data according to the above-mentioned recording method that is identified.Test data is to rely on variable recording impulse and recording optical power to finish its record like this, and above-mentioned microprocessor 80 is controlled above-mentioned light pickers 20 and the test data that is recorded is read in order.
After so reading out, produce the asymmetry value (β=[(A1-A2)/(A1+A2)] * 100, timeslice level=0 o'clock) of reproducing signal from reproducing signal in above-mentioned R/F device 50 filtered shapingizations.
Follow above-mentioned microprocessor 80 and allow the target beta value range that on above-mentioned CD 10, is writing down read as shown in Figure 11, determine best recording optical power value S22 once from the curve and the above-mentioned target beta value range of reading of above-mentioned gained.Above-mentioned target beta value range is as shown in Figure 2, and interior byte second (during M1:S1:F18=001) of ATIP that is recorded in the temporal information field of CD 10 by 3 bits (P1P2P3) data recording.
The value range of β when above-mentioned microprocessor 80 is above-mentioned 3 bits (P1P2P3) data that are read out for (000) is-4～+ 8%.
The value range of β when " 001 " is 0～+ 12% to determine.The words of determining the recording optical power value by disposable OPC operation like this, above-mentioned microprocessor 80 be between the disposable OPC operational zone of above-mentioned test section A in, be that benchmark carries out 2 property OPC operations then with above-mentioned recording optical power value, above-mentioned 2 property OPC operation be between disposable OPC operational zone in.Then with the test digital recording of 1185ATIP at above-mentioned test section A, at this moment above-mentioned microprocessor 80 is a benchmark with the above-mentioned recording optical power value (as: 9mw) that is determined, this optical power value will carry out the strong sex change of the correction signal ground introduction of size variation in above-mentioned optical drive district 41 with stride degree size (the Δ P ') degree of appointment as shown in figure 10, operate determined recording optical power value in the step of determining by an above-mentioned OPC, change luminous power to segment the step size (Δ P ') of cutting more, finish accurate OPC operation (S23) with this.
According to such secondary OPC, test data is finished record to about 80% interval (about 1200ATIP) of above-mentioned test section (A), and then above-mentioned microprocessor (80) is determined recording optical power value (S24) best as has been stated like that.
Like this, if the best titime optical power value is determined at last, above-mentioned microprocessor 80 utilizes above-mentioned obtained best titime optical power value, just the recording operation that can be applied, when the record cast that is applied is replication mode, all the elements that insertion is installed on above-mentioned CD-P CD are recorded on the CD of being installed by the insertion of CD-R in the same old way, and the content of the CD that will be loaded into for this master microprocessor that is attached to CD-P is pass on to the sub-microprocessor 80 on the above-mentioned CD-R of being additional to.
Then, above-mentioned microprocessor 80 drives CD 10 rotations by above-mentioned servomechanism 60 and driver 70, above-mentioned digital signal processor 30a be additional for symbolism the coding with reliability and the error correction of recoding/reproduction of data post (ELL BLOCK) such as idol generation error correcting codes, above-mentioned CB coding (40) will be from above-mentioned digital recording signal processor (30a) output, and digit order number (bit) stream thinks that signal aspect that the pulse amplitude modulation that is recorded in above-mentioned CD (10) changes and is incorporated in above-mentioned driver 41.Above-mentioned microprocessor 80 is according to operating the corresponding each other optical drive electric current of determined best titime optical power value with the above-mentioned secondary OPC that once reaches.Control above-mentioned CD-ROM driver 41 in order to allow tracer signal output, above-mentioned CD-ROM driver 41 is incorporated in CD 20 with the signal of relevant optical drive power, allow the signal record of above-mentioned pulse amplitude modulation in the program area of CD 10, so recording operation is enclosed in all the elements of the CD of CD-P, pack in finish on the CD 10 of CD-R its record till proceed to operate S25.
Figure 12 a and Figure 12 b are the process flow diagrams that the optimal recording power of the CD according to the present invention is determined another embodiment of method.
Optimal recording power as for Figure 12 is determined method, and it is described as follows:
The method that the recording power of Figure 12 is determined method and Fig. 8 much at one, but the method for Fig. 8 is along with the logging mode that is applied, at the test section of CD 10 A the test data of 15ATIP is being write down, and determine an OPC operation of recording optical power value, then to carry out secondary OPC between an OPC operational zone, get the best titime optical power value thus then.But the method for Figure 12 is test section (A) used when once reaching secondary OPC operation, promptly through about 80% interval of above-mentioned test section (A) test data is carried out disposable recording, and definite best titime optical power value (S40～S52).For this reason, (Δ P ") regulates above-mentioned microprocessor (80); and record test data; at this moment; as shown in figure 13; with above-mentioned target record luminous power is benchmark; make luminous power with Δ P " size changes also to lack than the used less amplitude of amplitude modulation when the OPC operation with the above-mentioned target record luminous power (as 8mw) that is read out affirmation, and record test data (1ATIP 1200ATIP), carefully quantize with 1200 decomposition, and record data utilize the test data that is recorded, and determine the recording operation (S53) that the best titime optical power value is applied as described above.
Certainly, those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the present invention, and be not to be used as limitation of the invention, as long as in connotation scope of the present invention, all will drop in the scope of claims of the present invention variation, the modification of the above embodiment.
Claims (3)
1. the best approach of a definite optical disc recording power, relevant best titime luminous power testing process (OPC) method of operating; It is characterized in that described method comprises:
Phase one is differentiated the logging mode that is applied when being the application record data;
Subordinate phase is according to above-mentioned differentiation result, in the test section of the CD that is loaded into, between the attached exceptions area that is assigned with OPC interval, adjusts measured power scanning level, and arbitrary data are tested; And
Phase III is the above-mentioned test data sheet of writing down of reproduction, determines the best titime optical power value from playback signal characteristic.
2. the best approach of definite optical disc recording power as claimed in claim 1 is characterized in that described the 2nd stage and the 3rd stage are that described logging mode carries out under the state of replication mode CD.
3. the best approach of definite optical disc recording power as claimed in claim 1, the test data sheet that it is characterized in that described subordinate phase are to finish with 80% zone through above-mentioned test section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA021122873A CN1466126A (en) | 2002-06-28 | 2002-06-28 | Optimun method for determining optical disc recording power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA021122873A CN1466126A (en) | 2002-06-28 | 2002-06-28 | Optimun method for determining optical disc recording power |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1466126A true CN1466126A (en) | 2004-01-07 |
Family
ID=34141868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA021122873A Pending CN1466126A (en) | 2002-06-28 | 2002-06-28 | Optimun method for determining optical disc recording power |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1466126A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102388419A (en) * | 2009-04-10 | 2012-03-21 | 三菱电机株式会社 | Optical disk reproduction power setting method, optical disk reproduction method, and optical disk device |
| CN101681652B (en) * | 2008-02-15 | 2012-06-27 | 松下电器产业株式会社 | Optical disc test method and optical disc medium |
-
2002
- 2002-06-28 CN CNA021122873A patent/CN1466126A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101681652B (en) * | 2008-02-15 | 2012-06-27 | 松下电器产业株式会社 | Optical disc test method and optical disc medium |
| CN102388419A (en) * | 2009-04-10 | 2012-03-21 | 三菱电机株式会社 | Optical disk reproduction power setting method, optical disk reproduction method, and optical disk device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1354462A (en) | Optical disk recorder for changeable density write data | |
| CN1805010A (en) | Audio mixing processing apparatus and audio mixing processing method | |
| CN1150855A (en) | Optical disk having pattern for evaluating optical disk | |
| CN1146875C (en) | Compact disk and compact disk equipment | |
| CN1178224C (en) | Information recording apparatus and information reproducing apparatus | |
| CN1290010A (en) | Data recording media, data recording and/or reproducing device and method for determining recording media | |
| CN1229780C (en) | Optical disc device and its producing method for clock signal and method for setting its optical quantum | |
| CN1393018A (en) | Data recording method and data recording apparatus | |
| CN1335617A (en) | CD driving device and recording/reproducing method | |
| CN1404048A (en) | Recording device and method, reproducing device and method, and recording medium | |
| CN100347759C (en) | Optical disc apparatus | |
| CN1272795C (en) | Data recording medium, device and method, and data reproducing device and method | |
| CN1218946A (en) | Reproducing device and method for optic disc | |
| CN1201224A (en) | Information recording medium and information recording method | |
| CN100338662C (en) | Method for reading burst cutting area (BCA) data from optical disc and an optical disc apparatus | |
| CN1466126A (en) | Optimun method for determining optical disc recording power | |
| CN1277254C (en) | Device and method for controlling write-in power of optical disc | |
| CN1300795C (en) | Search method of recording medium with overlapped time address and its equipment | |
| CN1327585A (en) | Addition of watermark keys according to a flexible format | |
| CN1276416C (en) | Optical disk recording/reproducing device and optical disk/reproducing method | |
| CN1342978A (en) | Recording equipment, recording medium, read equipment and recording medium decision method | |
| CN1150550C (en) | Data recording method for rewriting recording media | |
| CN100343908C (en) | Optical disk device | |
| CN1308333A (en) | CD recording and/or playback equipment and method | |
| CN100407297C (en) | Method for performing servo control for blank discs |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |