CN1194340C - Optical power calibrating method and optical disk drive - Google Patents
Optical power calibrating method and optical disk drive Download PDFInfo
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- CN1194340C CN1194340C CNB011109491A CN01110949A CN1194340C CN 1194340 C CN1194340 C CN 1194340C CN B011109491 A CNB011109491 A CN B011109491A CN 01110949 A CN01110949 A CN 01110949A CN 1194340 C CN1194340 C CN 1194340C
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Abstract
The present invention relates to an optical power calibrating method for calibrating the writing-in power of an optical disk drive. The optical disk drive is provided with an access device for writing data in an optical disk. The optical disk is provided with a central position, an inner edge power calibrating area positioned on the outer side of the central position, a data storage area which is positioned on the outer side of the inner edge power calibrating area and is used for writing in the data and an outer edge power calibrating area positioned on the outer side of the data storage area. In the method, the access device is controlled by the writing-in position in the data storage area of the data to be written in to calibrate optical power in one of the inner edge power calibrating area and the outer edge power calibrating area so as to determine the desired writing-in power and write the data in the optical disk.
Description
Technical field
The present invention relates to a kind of optical power calibrating method and CD player, particularly a kind of method and CD player of carrying out optical power calibrating according to the data writing position.
Background technology
Read-write formula CD player (CD-R/CD-RW drive) has been widely used the peripheral accessing equipment at computing machine.Generally speaking, this type CD player all can be carried out an optical power calibrating program earlier in that data to be write discs (CD-R/CD-RW) preceding.Optical power calibrating is to write information specific in advance in a capability correction district (PCA) of discs inner edge, and then the information that writes read back, find out the characteristic of this discs by this, decide required Writing power, in the hope of correctly data being write discs.
With reference to Fig. 1.Fig. 1 is the structural representation of known discs 10.The specification of known discs 10 is to be defined in the Orange Book (Orange Book).Generally, discs 10 includes the outside that 12, one capability correction districts 14, a centre are positioned at centre 12 and is used for carrying out optical power calibrating, and the outside that a data storage area 16 is positioned at capability correction district 14 is used for writing data for the user.Known CD player 10 can be prior to carrying out the optical power calibrating program in the capability correction district 14, to determine suitable power parameter before writing work.That is to say that known CD player 10 is with this inner edge capability correction district 14 residing environment and the step response etc. that shakes, and simulates the situation of total data memory block 16, to find out suitable Writing power.
Yet above-mentioned capability correction mode can not reach the purpose of correction accurately.Because capability correction district 14 is the inner edges that are positioned at discs 10, there is the outer rim of suitable part near discs 10 data storage area 16, the environment of living in of discs 10 inside and outside edge and the step response that shakes often have suitable difference again, therefore known capability correction method can not predict only Writing power accurately, and it is bad to cause writing quality.
Summary of the invention
Therefore, fundamental purpose of the present invention is providing a kind of optical power calibrating method and CD player.It can be controlled this access device and select to carry out optical power calibrating in an inner edge or an outer rim capability correction district according to the writing position of data, addresses the above problem.
For achieving the above object, the invention provides a kind of optical power calibrating method, be used for proofreading and correct the Writing power of a CD player, this CD player includes an access device and is used for data are write a discs, this discs includes a centre, the outside that one inner edge capability correction district is positioned at this centre is used for doing optical power calibrating, the outside that one data storage area is positioned at this inner edge capability correction district is used for writing data for the user, and the outside that is positioned at this data storage area, an outer rim capability correction district is used for doing optical power calibrating, and this method includes: data of desiring to write are provided; Determine the writing position of these data in this data storage area; According to this writing position, control this access device and carry out optical power calibrating in the person one of in this inner edge and outer rim capability correction district; And, determine required Writing power, and control this access device these data are written in this discs according to the result of optical power calibrating; Also include: this data storage is distinguished into a medial area and a LHA; The step of carrying out optical power calibrating in this method then includes: when this writing position is positioned at this medial area, control this access device and carry out optical power calibrating in this inner edge capability correction district, when this writing position is positioned at this LHA, controls this access device and carry out optical power calibrating in this outer rim capability correction district.
In addition, the present invention also provides a kind of CD player, it includes: an access device, be used for data are write a discs, this discs includes a centre, the outside that one inner edge capability correction district is positioned at this centre is used for doing optical power calibrating, and the outside that a data storage area is positioned at this inner edge capability correction district is used for writing data for the user, and the outside that an outer rim capability correction district is positioned at this data storage area is used for doing optical power calibrating; And a control device, be used for controlling the operation of this CD player; Wherein this control device can determine the writing position of data of desiring to write in this data storage area, and control this access device according to this writing position and carry out optical power calibrating to determine required Writing power in the person one of in this inner edge and outer rim capability correction district, then these data are written into this discs, wherein this data storage area includes a medial area and a LHA, when this writing position is positioned at this medial area, this control device can be controlled this access device and carry out optical power calibrating in this inner edge capability correction district, when this writing position was positioned at this LHA, this control device then can be controlled this access device and carry out optical power calibrating in this outer rim capability correction district.
For making feature of the present invention, advantage is clearer and more definite, is elaborated below in conjunction with accompanying drawing.
Description of drawings
Fig. 1 is the structural representation of known discs.
Fig. 2 is the synoptic diagram of CD player of the present invention.
Fig. 3 is the control mode synoptic diagram of Fig. 2 CD player.
Fig. 4 is the process flow diagram of present embodiment capability correction method.
Fig. 5 is the another embodiment of the present invention synoptic diagram.
Fig. 6 is the process flow diagram of Fig. 5 embodiment capability correction method.
Embodiment
With reference to Fig. 2, Fig. 2 is the synoptic diagram of CD player 30 of the present invention.CD player 30 includes an access device 32 and is used for data are write a discs 34, and a control device 36 is used for controlling the operation of CD player 30.Control device 36 can carry out optical power calibrating by control access device 32, and according to the result who proofreaies and correct data is write discs 34.
As shown in Figure 2, discs 34 includes a centre 38 by the center in regular turn to outer rim, one inner edge capability correction district 40 is used for optical power calibrating, one data storage area 46 is used for writing the data that desire is stored for the user, and a last possibility terminator 48 is used for writing down the information of this discs ED.According to the specification of Orange Book, all must retain suitable length with the record data ending message in the part of all discs outer most edge, this zone is the last of discs may terminator 48.In the present invention, inner edge capability correction district 40 can provide capability correction 100 times, may then include an outer rim capability correction district 52 in terminator 48 at last, also for the usefulness of capability correction is provided.
Specification according to Orange Book, the length of possibility terminator 48 is at least greater than 01:30:00 at last, the discs that some manufacturer provides at last may terminator 48 even is reached 01:50:00, generally speaking, whenever carry out an optical power calibrating and need consume 15 image frames (frame), therefore 100 Writing capability corrections just need 1500 image frames, be equivalent to 20 seconds (00:20:00), so as long as in the end may retain enough length for the record data termination message in the terminator 48, other parts can be provided with the usefulness of outer rim capability correction district 52 for capability correction.In the present embodiment, outer rim capability correction district 52 is arranged at a 1:00:00 to 01:20:60 after at last may zero-time 50 and locates.In addition, the inner edge capability correction district 40 and the outer rim capability correction district 52 of present embodiment respectively are provided with corresponding test section and metering district, are used for writing test respectively and calculate the number of times that writes test.About how utilizing test section and metering district to carry out optical power calibrating,, not adding at this and to give unnecessary details for as well known to those skilled in the art.
With reference to Fig. 3, Fig. 3 is the control mode synoptic diagram of Fig. 2 CD player 30.In the present embodiment, CD player 30 be with one fixedly the mode of tangential velocity (CLV) control the rotation of discs 34.As shown in Figure 4, the control method of fixed linear speed can be controlled the rotating speed of discs 34, makes that the data cell of diverse location is all identical by the tangential velocity of access device 32 on discs 34 tracks.This moment is with regard to the rotating speed (being angular velocity) of discs 34, data cell at butt joint dipped beam disc 34 centers is write fashionable, the rotating speed of discs 34 can be very fast, and write fashionablely in the data cell of butt joint dipped beam disc 34 outer rims, and the rotating speed of discs 34 then can be slower.
CD player 30 can be according to the writing position of data, and selecting should be in inner edge capability correction district 40, also or outer rim capability correction district 52 carries out capability correction.As shown in Figure 3, present embodiment is divided into a medial area 46a and a LHA 46b with data storage area 46.When desiring to write data, control device 36 can the writing position of these data of decision in data storage area 46.When this writing position is positioned at medial area 46a, CD player 30 can use the inner edge capability correction district 40 of Fig. 2 to carry out optical power calibrating, when this writing position was positioned at LHA 46b, 30 of CD player can use outer rim capability correction district 52 to carry out optical power calibrating.
With reference to Fig. 4, Fig. 4 is the process flow diagram of present embodiment capability correction method.The capability correction method of present embodiment is to carry out according to the following step:
Step 100: data storage area 46 is divided into medial area 46a and LHA 46b.
Step 102: data of desiring to write are provided.
Step 104: determine the writing position of these data in data storage area 46.
Step 106: according to this writing position, control access device 32 carries out optical power calibrating in inner edge or outer rim capability correction district 40,52, wherein when this writing position is positioned at medial area 46a, use inner edge capability correction district 40 to carry out optical power calibrating, when this writing position is positioned at LHA 46b, use outer rim capability correction district 52 to carry out optical power calibrating.
Step 108: according to the result of optical power calibrating, determine the Writing power of required use, and control access device 32 writes discs 34 with these data.
According to above-mentioned steps, because medial area 46a is near inner edge capability correction district 40, and LHA 46b is near outer rim capability correction district 52, so the environment of living in of medial area 46a and LHA 46b and the step response that shakes are respectively near inner edge and outer rim capability correction district 40,52.Therefore, capability correction method of the present invention can predict more accurately actual should be in the Writing power in the region of data storage 46, improve and write quality.
In addition, the foregoing description is to be that example is illustrated with the fixing control mode of tangential velocity, yet in the CD player of using fixed angles speed (CAV) control mode, also can use mode of the present invention equally, data storage area 46 is divided into medial area 46a and LHA 46b, and carry out capability correction with different capability correction district 40,52 respectively, to ask for more accurate correction result.
With reference to Fig. 5, Fig. 5 is the another embodiment of the present invention synoptic diagram.Different with last embodiment is, CD player 30 is not to adopt the control mode of fixing tangential velocity or fixed angles speed, but controls the rotation of discs 34 in a kind of mode of several tangent speeds.As shown in Figure 6, this kind control mode is that data storage area 46 with discs 34 is divided into 5 data section Z from inside to outside
1, Z
2, Z
3, Z
4, Z
5, and CD player 30 is at each data segments Z
1, Z
2, Z
3, Z
4, Z
5In control the rotation of discs 34 respectively in the fixing mode of tangential velocity, and each data segments Z wherein
1, Z
2, Z
3, Z
4, Z
5Tangential velocity neither with, be respectively V
1, V
2, V
3, V
4, V
5, and each data segments Z
1, Z
2, Z
3, Z
4, Z
5Initial angle speed then roughly the same, be about W
0
In the present embodiment, control device 36 can be according to the data segments Z at the writing position place of data in data storage area 46 of desiring to write
1, Z
2, Z
3, Z
4, Z
5, use inner edge or outer rim capability correction district 40,52 with decision.When this writing position is positioned at inboard 3 data section Z
1, Z
2, Z
3The time, CD player 30 can use inner edge capability correction district 40 to carry out optical power calibrating, when this writing position is positioned at other 2 data section Z
4, Z
5The time, 30 of CD player can use outer rim capability correction district 52 to carry out optical power calibrating.
With reference to Fig. 6.Fig. 6 is the process flow diagram of Fig. 5 embodiment capability correction method.The described capability correction method of Fig. 5 embodiment can carry out according to the following step:
Step 200: predetermined N data section Z
1To Z
nUsefulness for several tangent speeds control.
Step 202: data of desiring to write are provided.
Step 204: determine the writing position of these data in data storage area 46.
Step 206: according to this writing position, control access device 32 carries out optical power calibrating in inner edge or outer rim capability correction district 40,52, wherein be positioned at inboard M (during the data segments of M＜N) when this writing position, use this inner edge capability correction district to carry out optical power calibrating, when this writing position is positioned at other N-M record districts, use outer rim capability correction district 52 to carry out optical power calibrating.
Step 208: according to the result of optical power calibrating, determine the Writing power of required use, and control access device 32 writes discs 34 with these data.
Wherein the value of M can be about half of N, and certainly, the value of N and M also can be selected according to correlative factor voluntarily by the deviser, so long as select suitable capability correction district according to writing position, spirit all according to the invention.
Compare with known technology, optical power calibrating method of the present invention is the writing position in the foundation data, one of be chosen in inner edge and the outer rim capability correction district 40,52 in the person and carry out optical power calibrating, so can predict actual Writing power in data storage area 46 more accurately, raising writes quality.
The above only is preferred embodiment of the present invention, and all equivalent variations and modifications of being done according to claim scope of the present invention all should belong to the covering scope of claim of the present invention.
Claims (12)
1. optical power calibrating method, be used for proofreading and correct the Writing power of a CD player, this CD player includes an access device and is used for data are write a discs, this discs includes a centre, the outside that one inner edge capability correction district is positioned at this centre is used for doing optical power calibrating, the outside that one data storage area is positioned at this inner edge capability correction district is used for writing data for the user, and the outside that is positioned at this data storage area, an outer rim capability correction district is used for doing optical power calibrating, and this method includes: data of desiring to write are provided;
Determine the writing position of these data in this data storage area;
According to this writing position, control this access device and carry out optical power calibrating in one of in this inner edge and outer rim capability correction district; And
According to the result of optical power calibrating, determine required Writing power, and control this access device these data are written in this discs; Also include:
This data storage is distinguished into a medial area and a LHA;
The step of carrying out optical power calibrating in this method then includes:
When this writing position is positioned at this medial area, control this access device and carry out optical power calibrating in this inner edge capability correction district, when this writing position is positioned at this LHA, controls this access device and carry out optical power calibrating in this outer rim capability correction district.
2. capability correction method as claimed in claim 1, wherein this CD player is to control the rotation of this discs in the fixing mode of tangential velocity.
3. capability correction method as claimed in claim 1, wherein this CD player is to control the rotation of this discs in the mode of fixed angles speed.
4. capability correction method as claimed in claim 1, wherein this data storage area includes a plurality of data segments, and this CD player is to control the rotation of this discs in each data segments respectively in the fixing mode of tangential velocity, and the tangential velocity of each data segments neither with.
5. capability correction method as claimed in claim 4, wherein this data storage area includes N data section, and the step of carrying out optical power calibrating in this method includes:
When this writing position is positioned at inboard M data section, M＜N, control this access device and carry out optical power calibrating, when this writing position is positioned at other N-M data sections, controls this access device and carry out optical power calibrating in this outer rim capability correction district in this inner edge capability correction district.
6. capability correction method as claimed in claim 1, wherein this CD player also includes one and may only distinguish the information that the outer rim that is positioned at this discs is used for writing down this discs ED at last, this outer rim capability correction district then be positioned at this at last may terminator within.
7. CD player, it includes:
One access device, be used for data are write a discs, this discs includes a centre, the outside that one inner edge capability correction district is positioned at this centre is used for doing optical power calibrating, the outside that one data storage area is positioned at this inner edge capability correction district is used for writing data for the user, and the outside that an outer rim capability correction district is positioned at this data storage area is used for doing optical power calibrating; And
One control device is used for controlling the operation of this CD player;
Wherein this control device can determine the writing position of data of desiring to write in this data storage area, and control this access device according to this writing position and carry out optical power calibrating to determine required Writing power in the person one of in this inner edge and outer rim capability correction district, then these data are written into this discs, wherein this data storage area includes a medial area and a LHA, when this writing position is positioned at this medial area, this control device can be controlled this access device and carry out optical power calibrating in this inner edge capability correction district, when this writing position was positioned at this LHA, this control device then can be controlled this access device and carry out optical power calibrating in this outer rim capability correction district.
8. CD player as claimed in claim 7, wherein this CD player is to control the rotation of this discs in the fixing mode of tangential velocity.
9. CD player as claimed in claim 7, wherein this CD player is to control the rotation of this discs in the mode of fixed angles speed.
10. CD player as claimed in claim 7, wherein this data storage area includes a plurality of data segments, and this CD player all is to control the rotation of this discs in the fixing mode of tangential velocity in each data segments, and the tangential velocity of each data segments is all different.
11. CD player as claim 10, wherein this data storage area includes N data section, when this writing position is positioned at inboard M (during the data segments of M＜N), this control device can be controlled this access device and carry out optical power calibrating in this inner edge capability correction district, when this writing position was positioned at other N-M data sections, this control device can be controlled this access device and carry out optical power calibrating in this outer rim capability correction district.
12. CD player as claimed in claim 7, wherein this discs also includes the information that an outer rim that it(?) at last may the terminator be positioned at this discs is used for writing down this discs ED, this outer rim capability correction district then be positioned at this at last may terminator within.
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011109491A CN1194340C (en) | 2001-03-07 | 2001-03-07 | Optical power calibrating method and optical disk drive |
| EP02715363A EP1367568B1 (en) | 2001-03-07 | 2002-01-10 | An optical power calibration method for calibrating the writing optical power of optical disk drive |
| DK02715363T DK1367568T3 (en) | 2001-03-07 | 2002-01-10 | Optical method for calibrating the optical write power of an optical disk drive |
| DE60215778T DE60215778T2 (en) | 2001-03-07 | 2002-01-10 | OPTICAL POWER CALIBRATION METHOD FOR CALIBRATING THE OPTICAL WRITING PERFORMANCE OF AN OPTICAL PLATE DRIVE |
| EP06022224A EP1752975A1 (en) | 2001-03-07 | 2002-01-10 | An optical power calibration method for calibrating the writing optical power of optical disk drive |
| ES02715363T ES2274015T3 (en) | 2001-03-07 | 2002-01-10 | PROCEDURE FOR CALIBRATION OF OPTICAL POWER TO CALIBRATE THE OPTICAL POWER OF WRITING OF AN OPTICAL DISK UNIT. |
| PCT/CN2002/000011 WO2002071397A1 (en) | 2001-03-07 | 2002-01-10 | An optical power calibration method for calibrating the writing optical power of optical disk drive |
| AT02715363T ATE344521T1 (en) | 2001-03-07 | 2002-01-10 | OPTICAL POWER CALIBRATION METHOD FOR CALIBRATING THE OPTICAL WRITE POWER OF AN OPTICAL DISK DRIVE |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011109491A CN1194340C (en) | 2001-03-07 | 2001-03-07 | Optical power calibrating method and optical disk drive |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1373473A CN1373473A (en) | 2002-10-09 |
| CN1194340C true CN1194340C (en) | 2005-03-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011109491A Expired - Fee Related CN1194340C (en) | 2001-03-07 | 2001-03-07 | Optical power calibrating method and optical disk drive |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1194340C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1297971C (en) * | 2002-09-18 | 2007-01-31 | 建兴电子科技股份有限公司 | Dynamic memory configuring method for recording power of CDRW driver |
| JP2005158148A (en) * | 2003-10-30 | 2005-06-16 | Victor Co Of Japan Ltd | Optical disk, and optical disk recording method and apparatus |
| CN102044275B (en) * | 2009-10-19 | 2012-10-10 | 建兴电子科技股份有限公司 | Compact disc, compact disc read-only memory (CD-ROM), method for using compact disc read-only memory, and method for producing compact disc |
-
2001
- 2001-03-07 CN CNB011109491A patent/CN1194340C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1373473A (en) | 2002-10-09 |
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Granted publication date: 20050323 Termination date: 20100307 |