CN101093675A - Method and apparatus for recording data in an optical disk device - Google Patents
Method and apparatus for recording data in an optical disk device Download PDFInfo
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- CN101093675A CN101093675A CNA2007100971373A CN200710097137A CN101093675A CN 101093675 A CN101093675 A CN 101093675A CN A2007100971373 A CNA2007100971373 A CN A2007100971373A CN 200710097137 A CN200710097137 A CN 200710097137A CN 101093675 A CN101093675 A CN 101093675A
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- writing speed
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
- G11B7/0045—Recording
- G11B7/00458—Verification, i.e. checking data during or after recording
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
- G11B7/00736—Auxiliary data, e.g. lead-in, lead-out, Power Calibration Area [PCA], Burst Cutting Area [BCA], control information
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
- G11B7/125—Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
- G11B7/126—Circuits, methods or arrangements for laser control or stabilisation
- G11B7/1263—Power control during transducing, e.g. by monitoring
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
- G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
- G11B2220/2537—Optical discs
- G11B2220/2562—DVDs [digital versatile discs]; Digital video discs; MMCDs; HDCDs
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- Optics & Photonics (AREA)
- Optical Recording Or Reproduction (AREA)
Abstract
A method and apparatus for recording data on an optical disk calculates an optical power at a first recording speed, compares the calculated optical power to a predetermined value, and then determines whether to apply the first recording speed based on a result of the comparison. The optical power at the first recording speed is calculated based on a reference optical power and a measured optical power, and the predetermined value may correspond to the maximum allowable power of a laser pickup. The method and apparatus may be used to control the speeding, timing, and/power of a data recording operation, as well as to compensate for temperature variations and/or power margins of one or more circuits in an optical disk device.
Description
Technical field
One or more embodiment as herein described relates to a kind of compact disk equipment.
Background technology
Compact disk equipment usually uses power control techniques to attempt more efficiently at the CD identifying recording layer.These technology are considered to comprise the writing speed that the user asks and are used to carry out a plurality of factors of max power constraint of the laser diode of write operation.Unfortunately, the power control techniques of background technology can not compensate by temperature fluctuation fully, excessively writing speed request and other influence are incorporated into the mistake in the recording processing.
Description of drawings
Explain all embodiment with reference to the following drawings, identical in the accompanying drawings label refers to components identical, wherein:
How Figure 1A illustrates according to one type data recording and processing with friction speed the zones of different of dish to be carried out the figure that OPC handles and Figure 1B is the figure that illustrates the performance number of each speed calculation shown in Figure 1A;
Fig. 2 illustrates because the figure of an example of the mistake that takes place in the excircle of dish in luminous power deficiency during the data recording and processing;
Fig. 3 is the figure that a kind of optical disc apparatus is shown;
Fig. 4 is the process flow diagram of step included in the data record method that illustrates according to an embodiment; And
Fig. 5 and 6 is the figure by all examples of the data recording and processing of the method execution of Fig. 4.
Embodiment data record method and device can be applicable to various types of CDs (for example, can write down digital versatile disc DVD-R and can rewrite digital versatile disc DVD-RW) and such as DVD-CD writer compact disk equipments such as (DVD-R).When at the CD identifying recording layer, one type compact disk equipment with in the accesses disk such as power calibration area specific regions such as (PCA).This equipment will handle specified data to write down desired optimum write power by carrying out best power control (OPC) subsequently.
During write operation final use write the influence that power may be subjected to the writing speed that the user asks.For example, when writing speed that the user asked was 4x speed, compact disk equipment was visited inner PCA and by carry out the optical power value that OPC handles to determine to be fit to the 4x writing speed with the 4x writing speed.
When writing speed that the user asked during greater than 4 times of (4x) speed (for example 16x speed), compact disk equipment will be at first as Figure 1A as shown in by in inner PCA, carrying out the optical power value that OPC handles to determine suitable 4x speed.Then, this equipment will be visited exterior PC A, then by carry out the optical power value that OPC handles to determine to be fit to 16x speed with the 16x writing speed.
After these operations, compact disk equipment will use 4x speed optical power value to calculate the optical power value that is fit to other writing speed as shown in Figure 1B.To carry out data recording operation by using the optical power value that is calculated then.
Using these values to excircle and writing processing from the inner periphery of dish as data.The inner periphery of the data field of exemplary disc and the radius of outermost circumference differ about 2.4 times.Therefore, when dish rotated with Constant Angular Velocity (CAV), the linear velocity in the outermost circumference (writing speed) was corresponding to about 2.4 times of the linear velocity in the inner periphery.This speed is activated the restriction of the characteristic of motor.
More specifically, the maximum of compact disk equipment (max) writing speed is by the output power and the other factors decision of the laser diode of the transmitting function of the speed capability of Spindle Motor, gearing and this equipment.Can define dominant record speed on the writing speed meaning in outermost circumference.
Therefore, for exemplary disc, the dominant record speed that the dominant record speed in the inner periphery is about compact disk equipment be in the outermost circumference dominant record speed 1/2.4.Therefore, for example, when dominant record speed was 16x, the dominant record speed in the inner periphery was 16/2.4=6.7x.
For at dish with will be in the Constant Angular Velocity rotation at the CD identifying recording layer, data recording speed must increase gradually.Therefore, for exemplary disc, as shown in Figure 1A, writing speed must increase to 16x speed gradually from 6.7x (16x speed 1/2.4) speed.
In order to increase writing speed in this way gradually, can increase luminous power gradually according to the optical power value that the writing speed of the scope shown in Figure 1A is calculated.For example, the 46.8mW under the 6.7x speed of optical power value from inner periphery can be adjusted to with increasing gradually the 50mW under the 8x speed, the 60mW under the 12x speed arrives the 70mW under the 16x speed again.
Except writing speed, carry out the required optical power value of data write operation and can depend on such as further feature such as environment temperature variation and change, for example,, under higher temperature, require bigger power usually in order to keep constant angular velocity.In addition, because the producible luminous power of laser diode is restricted, so laser power can not ad infinitum be provided with De Genggao.
In order to compensate these influences, a kind of technology relates to when the luminous power deficiency of the writing speed of determining to be asked writing speed is reduced one-level.According to this technology, compact disk equipment is measured environment temperature and measured temperature is set as the basis that reduces writing speed.When the temperature that records surpasses certain temperature, reduce writing speed.
Yet, because it is not strict proportional to be fit to the luminous power and the correlativity between the temperature of writing speed, thus in some cases serviceability temperature regulate writing speed as indication may be inaccurate.For example, if certain maximum temperature is limited power during the recording operation as the basis, even but then surpassing under the temperature of maximum allowable temperature, the laser diode of compact disk equipment may still can be realized more high power.Therefore, serviceability temperature may unnecessarily limit writing speed as the single basis of controlling recording power, although because still can obtain higher writing speed under excess temperature.
On the other hand, allowable temperature does not increase to power level more than the maximum capacity of laser instrument.This is for example shown in Fig. 2.Particularly, when making the optical power value of 4x speed when 40mW increases to 45mW because the temperature in the compact disk equipment rises, as the optical power value of the 16x speed of dominant record speed according to ratio expression formula 40: 45=70: x increases to 78.75mW from 70mW.
Yet if the laser diode maximum laser power value (from laser beam being converged to the object lens output on the recording layer) that incides on the dish is limited in 70mW, the luminous power of 78.75mW is impossible.Therefore,, can not data correctly be recorded on the excircle of CD with 16x speed for 16x speed, or the data of reproducing recorded normally.
Fig. 3 illustrates and has realized the power that improves and the compact disk equipment of speed control performance.This equipment comprises: optical pickup 11, Spindle Motor 12, step motor 13, driver element 14, optical driving unit 15, channels bits (CB) scrambler 16, digital signal processor (DSP) 17, RF unit 18, servo unit 19, storer 20 and microprocessor 21.
When carrying out data recording operation in response to user's request, microprocessor 21 certain interior zone of visit, for example CD (for example, DVD-R or DVD-RW) inside PCA, carry out OPC with specific writing speed (for example 4x speed) and handle, and detect the actual light performance number that is fit to this specific writing speed by control servo unit 19 and optical driving unit 15.
The optical power value of the writing speed that the suitable user of microprocessor prediction is asked is handled and outside PCA is not carried out OPC.This is to realize by detected actual light performance number is compared with the reference light performance number of management in storer 20 (for example, storage).Then, microprocessor is determined a dominant record speed on the basis of maximum luminous power value of optical power value of being predicted and management (storage) in storer, and correspondingly carries out present with the data record method that illustrates in greater detail.
Referring to Fig. 4, before carrying out this data record method, the inside PCA of microprocessor 21 visit CDs 10 carries out OPC with specific writing speed and handles, and detects the actual light performance number (S10) that is fit to this specific writing speed by control servo unit 19 and optical driving unit 15.This specific writing speed can be for example predetermined or default speed, for example 4x speed.
Then, microprocessor calculate to be fit to the prediction optical power value of the writing speed that the user asked.Reference light performance number under the reference light performance number of this specific writing speed that this calculating can use detected actual light performance number, manage in storer and the writing speed that the user asked is carried out on the basis of predetermined ratio expression formula.Then, use this ratio expression formula that other writing speed is calculated prediction optical power value (S11).
Fig. 5 illustrates first example how to calculate the predicted power value.In this example, because the OPC that carries out on inner PCA handles, the actual light performance number that therefore is fit to 4x speed can be detected as 38mW, this be lower than with storer in the corresponding 40mW of 4x Velocity Reference optical power value (seeing dotted line) of management (for example storage).
For example, when 4x Velocity Reference optical power value and actual light performance number are respectively 40mW and 38mW, and when the reference light performance number of the 16x speed that the user asked was 70mW, microprocessor 21 was such as 40: 38=70: the prediction optical power value that calculates 16x speed on the basis of x equal proportion expression formula is x=66.5mW.
Then, microprocessor determines by the maximum luminous power value of checking management in the storer 20 whether laser diode can support this prediction optical power value (for example in the power capability of laser diode) (S12).For example, when 16x prediction of speed optical power value is 66.5mW and the maximum luminous power value that is checked through when being 70mW, microprocessor is determined to export the prediction optical power value of being calculated.
Then, thus microprocessor omits OPC to outside PCA to be handled and carries out the luminous power control and treatment writing speed---16x speed was carried out data recording operation so that the user is asked.This realizes (S13) by control servo unit 19 and optical driving unit 15.When CD is with the Constant Angular Velocity rotation corresponding to the 16x speed that the user was asked, on the direction from the inner periphery to the excircle data are being recorded in the optical disc data district.
When data recording when inner periphery proceeds to excircle, writing speed increases to the 16x speed of being asked gradually from 6.7x speed (16/2.4).On the basis of the prediction optical power value of the writing speed that calculates in step 11, the writing speed of optical power value and increase increases pro rata gradually.
Fig. 6 is illustrated in another example that how to calculate the predicted power value under the situation of considering temperature.When the temperature in the compact disk equipment was higher than normal or predetermined temperature, the actual light performance number of 4x speed may be detected as 45mW, and this is higher than the corresponding 40mW of 4x Velocity Reference optical power value with management in storer 20.
When the reference light performance number that is respectively the 16x speed that 40mW and 45mW and user ask when 4x Velocity Reference optical power value and actual light performance number was 70mW, microprocessor is such as 40: 45=70: the prediction optical power value that calculates 16x speed on the basis of x equal proportion expression formula was x=78.75mW (S11).
Perhaps, can also on the basis of relation (being expressed as linear function) between writing speed and the reference light of in storer, the managing performance number and detected 4x speed actual light performance number, calculate the prediction optical power value of 16x speed with constant-slope.As an example, because energy hypothetical record rate curve and optical power value slope of a curve are 75mW not because of the other factors marked change among Fig. 6 so can calculate the prediction optical power value of 16x speed.This can by with reference light performance number 70mW with as the 5mW of actual light performance number under the 4x speed and the difference between reference light performance number Calais's realization mutually.
Then, microprocessor determines by the maximum luminous power value of checking management in storer 21 whether laser diode supports this prediction optical power value (for example, whether this predicted value surpasses the power capability of laser instrument) (S12).For example, when the 16x speed optical power value of prediction is 78.75mW and the maximum luminous power value that is checked through when being 70mW, microprocessor determine this prediction optical power value be can not produce and so 16x writing speed that the user asked under data recording be infeasible.
In this case, thus microprocessor consider detected 4x speed actual light performance number and the real power value of dominant record speed be defined as the maximum reference light performance number (S14) of 70mW.
That is, microprocessor is at ratio expression formula 40: 45=P: calculate the prediction luminous power p corresponding to the 62.2mW of 70mW optical power value on 70 the basis.Microprocessor also according to from writing speed x and storer 20 first linear function p=(70-40)/(16-4) (the x-4)+30=2.5x+30 that derives of reference light performance number of management obtain writing speed corresponding to obtained 62.2mW optical power value.When 62.2=2.5x+30, detected dominant record speed x is confirmed as 12.9, promptly is about the 13x writing speed.
The slope of supposing writing speed and optical power value when the maximum luminous power value of 70mW is set to the actual light performance number then can obtain corresponding writing speed with following another way not because of other factors changes greatly.
Thus, when the writing speed determined corresponding to the maximum luminous power value, microprocessor is carried out data recording operation by prediction optical power value that is applied in the writing speed of calculating in the step 12 and the writing speed of calculating in step 14, and all outside PCA is not carried out OPC as illustrated in fig. 6 and handle (S15).
Like this, can be in dominant record speed (writing speed on the outermost circumference) in step 14, to calculate, for example on the direction from the inner periphery to the excircle, data are recorded on the CD with corresponding to the angular velocity rotary CD of 13x speed the time.In the case, will reduce to run through the writing speed of inner periphery and excircle with the speed of the dominant record speed that reduces pro rata.In other words, data recording operation begins with 1/2.4 the writing speed that is about dominant record speed on inner periphery, and data with the dominant record speed record on outermost circumference.
Therewith relatively, can be with corresponding to the speed (or maximal rate that equipment was allowed) that the user was asked, for example carry out data recording from the inner periphery of CD to excircle the angular velocity rotary CD of 16x speed the time.In this case, may make a mistake because luminous power is not enough because be with 16x speed at the outermost circumference identifying recording layer, this is to be higher than the dominant record speed calculated in step 14.
In order to prevent this situation, should be with constant linear velocity (CLV) rotary CD when reducing angular velocity, with in the position corresponding to dominant record speed, promptly the slot # from Fig. 61 is kept dominant record speed.
From ratio expression formula r1: r2=Sc: Sm obtains expression formula r1=r1* (Sc/Sm), to calculate the slot # 1 corresponding to the dominant record speed of calculating in the step 14, r1.Here, r2 is the outermost circumference radius, and Sm is the dominant record speed on the outermost circumference that allows of equipment, and Sc is the dominant record speed of calculating in step 14.Can calculate position with the dominant record speed in the step 14 corresponding to dominant record speed.
The former suffers less load with respect to the main axle servo of CD but needs more data writing time.The latter puts on main axle servo (because the rotation of CD becomes CLV from CAV when carrying out data recording from the inner periphery to the excircle) with load, but has shortened the data recording time.Usually, because the user is partial to shorten writing time, so may think that in some cases the latter is more favourable.
During data recording, microprocessor is with the Spin Control of CD the writing of control data in corresponding to the Constant Angular Velocity of the 16x speed that the user asked.This proceeds to the position of being calculated by control by control servo unit 19 and optical driving unit 15 from the inner periphery of dish always.During at this moment, writing speed increases to 13x speed as the dominant record speed calculated from 6.7x speed (16/2.4).The optical power value that will increase gradually pro rata with the writing speed that increases on the basis of the prediction optical power value of the writing speed of calculating in step 11 is applied to data recording.
In addition, in order to maintain the dominant record speed of calculating in the step 14, microprocessor is write data in CLV pattern rotary CD.This carries out to outermost circumference from the position of being calculated by control servo unit and optical driving unit.Like this, just kept the prediction optical power value of the dominant record speed of calculating in the step 14, i.e. maximum luminous power value 70mW.
Therefore, this method and apparatus can improve record performance in the data recording mistake on preventing the excircle of CD.Can also calculate by the best power in the excircle that is omitted in CD and more promptly carry out data recording operation.In addition, can eliminate employed temperature sensor in many background technologies are used, make according to the design and the cost of the optical device of all embodiment as herein described more cheap and efficient.
According to another embodiment, the data record method in a kind of compact disk equipment is included in the luminous power of calculating on the basis of reference light power and the luminous power that records under first writing speed; The luminous power of calculating is compared with particular value; And determine whether to use first writing speed according to comparative result.
The luminous power that records can be the luminous power that is lower than under second writing speed of first writing speed, and is to handle by the power detection of carrying out on the specific internal zone of CD to record.Can use is luminous power, the reference light power of second writing speed and the reference light power of first writing speed that second writing speed is measured, and calculates luminous power under first writing speed according to the ratio expression formula.
Reference light power and this particular value can be stored in the nonvolatile memory of this equipment by writing speed.Can be by writing speed Memory Reference luminous power, and the maximum luminous power that this particular value can indicating equipment allows.
Can the luminous power of being calculated during less than this particular value with writing speed when the writing speed less than first writing speed increases to first writing speed at the CD identifying recording layer.At this moment, CD can be with constant angular velocity rotation.
Can be during greater than this particular value in the luminous power of calculating, use the luminous power measured less than second writing speed of first writing speed and the reference light power that comprises two or more writing speeds of second writing speed are determined the 3rd writing speed less than first writing speed corresponding to this particular value.Writing speed can increased in the 3rd writing speed at the CD identifying recording layer from the writing speed less than the 3rd writing speed.
During data recording, can increase to the 3rd writing speed to the ad-hoc location writing speed, and after this ad-hoc location, can keep the 3rd writing speed.CD can rotate with constant linear velocity up to this ad-hoc location and behind this ad-hoc location with Constant Angular Velocity rotation.This particular value can be applied to data recording.Can calculate this ad-hoc location based on the radius in the most external zone of first writing speed, the 3rd writing speed and data recording.
The finger of quoting to " embodiment ", " embodiment ", " example embodiment " etc. is included among at least one embodiment of the present invention in conjunction with special characteristic, structure or the characteristic that all embodiment describe in this manual.All places in instructions these phrases occur and not necessarily all refers to identical embodiment.In addition, when in conjunction with arbitrary embodiment special characteristic, structure or characteristic being described, it answers those skilled in the art to realize in the scope of these features, structure or characteristic in conjunction with other embodiment.
Though with reference to its a plurality of exemplary embodiments all embodiment of the present invention have been described, should have understood those skilled in the art and can find out many other modifications and the embodiment that to drop in the spirit and scope of the present invention.More specifically, in the scope of above-mentioned open, accompanying drawing and claims, rational distortion and modification can be arranged and not deviate from spirit of the present invention at parts that the object combination is provided with and/or in being provided with.Except parts and/or distortion in being provided with and the modification, the use of replacement also will be conspicuous to those skilled in the art.
Claims (50)
1. compact disk equipment data record method comprises:
In the luminous power of calculating on the basis of reference light power and measured luminous power under first writing speed;
The luminous power of being calculated is compared with particular value; And
Determine whether to use described first writing speed according to described comparative result.
2. the method for claim 1, it is characterized in that, the described luminous power that records is to handle by the power detection carried out on the specific internal zone of CD to record, and measured luminous power is the luminous power that is lower than under second writing speed of described first writing speed.
3. method as claimed in claim 2, it is characterized in that the luminous power under described first writing speed is to use the reference light power of the reference light power of the luminous power that described second writing speed is measured, described second writing speed and described first writing speed to calculate according to the ratio expression formula.
4. the method for claim 1 is characterized in that, described first writing speed is the writing speed that the user asks.
5. the method for claim 1 is characterized in that, described reference light power is based in the nonvolatile memory that respective record speed is stored in described equipment.
6. the method for claim 1 is characterized in that, described particular value is corresponding to maximum luminous power that described compact disk equipment allowed.
7. the method for claim 1 is characterized in that, when the luminous power of being calculated during less than described particular value, uses described first writing speed, and when working as the luminous power of being calculated and being not less than described particular value, uses described second writing speed.
8. method as claimed in claim 7 is characterized in that, also comprises:
When the luminous power of being calculated during, described writing speed is being increased in described first writing speed at described CD identifying recording layer from the writing speed less than described first writing speed less than described particular value.
9. method as claimed in claim 8 is characterized in that, during described data recording, described CD is with constant angular velocity rotation.
10. method as claimed in claim 7, it is characterized in that, when the luminous power of being calculated during greater than described particular value, calculate described second writing speed on the basis for the reference light circle power of the luminous power measured less than the 3rd writing speed of described first writing speed and the two or more writing speeds that comprise described second writing speed, described second writing speed is less than described first writing speed and be calculated as corresponding to described particular value.
11. method as claimed in claim 10 is characterized in that, also comprises:
Described writing speed is being increased in described second writing speed at described CD identifying recording layer from the writing speed less than described second writing speed.
12. method as claimed in claim 11 is characterized in that, during data recording, to ad-hoc location, described writing speed is increased up to described second writing speed, and is maintained at described second writing speed after described ad-hoc location.
13. method as claimed in claim 12 is characterized in that, described ad-hoc location is to calculate on the basis of the radius in the most external zone of the data recorded area of described first writing speed, described second writing speed and dish.
14. method as claimed in claim 12 is characterized in that, described CD rotates to described ad-hoc location with Constant Angular Velocity and rotates with constant linear velocity behind described ad-hoc location.
15. method as claimed in claim 12 is characterized in that, described particular value is applied to described data recording after described ad-hoc location.
16. the method at the CD identifying recording layer comprises:
Determine the performance number of described first writing speed;
On the basis of the performance number that described first writing speed is determined, calculate the performance number of second writing speed;
To compare with a predetermined value to the described performance number that described second writing speed is calculated; And
On the result's of described comparison basis at described CD identifying recording layer.
17. method as claimed in claim 16 is characterized in that, described second writing speed is greater than described first writing speed.
18. method as claimed in claim 17 is characterized in that, the performance number of described first writing speed is based on that the OPC that first circumference area of described dish is carried out handles to determine.
19. method as claimed in claim 18 is characterized in that, the inner periphery district that described first circumference area is described dish.
20. method as claimed in claim 18 is characterized in that, the performance number of described second writing speed is that second circumference area of described dish is calculated.
21. method as claimed in claim 20 is characterized in that, the excircle district that described second circumference area is described dish.
22. method as claimed in claim 21 is characterized in that, the performance number of described second writing speed is to calculate under the situation of described excircle district not being carried out the OPC processing.
23. method as claimed in claim 16, it is characterized in that the performance number of described second writing speed is to calculate on the basis of the performance number that described first writing speed is determined, reference power value under described first writing speed and the reference power value under described second writing speed.
24. method as claimed in claim 23, it is characterized in that the performance number of described second writing speed is to calculate on the basis of product of ratio of the reference power value under the reference power value under described second writing speed and performance number that described first writing speed is determined and described first writing speed.
25. method as claimed in claim 16 is characterized in that, described second writing speed is the writing speed that the user asks.
26. method as claimed in claim 16 is characterized in that, the dominant record speed that described second writing speed can reach corresponding to the compact disk equipment that is used in described disc recording data.
27. method as claimed in claim 16 is characterized in that, when the described performance number that described second writing speed is calculated was in respect to a scope of described predetermined value, described method also comprised:
The performance number of the scope of calculating between the performance number of the performance number of described first writing speed and described second writing speed, the reference power value of the performance number of described scope and the scope between the reference power value of the reference power value of described first writing speed and described second writing speed has the relation of substantial linear.
28. method as claimed in claim 27 is characterized in that, the performance number that described second writing speed is calculated is positioned at described scope during less than described predetermined value in described performance number.
29. method as claimed in claim 27 is characterized in that, also comprises:
The writing speed of the performance number proportional band of calculating and the scope between described first and second writing speeds.
30. method as claimed in claim 29 is characterized in that, data are recorded on the described CD on the basis of the writing speed of described scope.
31. method as claimed in claim 30 is characterized in that, described data are recorded from inner periphery district to the excircle district of described dish when described dish is with the angular velocity rotation of substantial constant.
32. method as claimed in claim 16 is characterized in that, the performance number that described second writing speed is calculated is positioned at the outside with respect to a scope of described predetermined value, and described method also comprises:
The performance number that to determine under described first writing speed is compared with the reference value of described first writing speed to generate an offset; And
Corrected power value based on described second writing speed of described compensation value calculation.
33. method as claimed in claim 32 is characterized in that, the corrected power value of described second writing speed be corresponding to the reference value of second writing speed and described offset and the basis on calculate.
34. method as claimed in claim 33 is characterized in that, described data are to be recorded on the described dish on the basis of the corrected power of the performance number of described first writing speed and described second writing speed.
35. method as claimed in claim 34 is characterized in that, described data are that inner periphery district to the excircle district from described dish writes down when described dish is with the angular velocity rotation of substantial constant.
36. method as claimed in claim 32 is characterized in that, also comprises:
The corrected power value of described second writing speed is compared with described predetermined value; And
On the result's of described comparison basis in described disc recording data.
37. method as claimed in claim 36 is characterized in that, described corrected power value is positioned at the outside with respect to a scope of described predetermined value, and described method also comprises:
On the basis of the reference power value of the reference power value of described first writing speed, described second writing speed and performance number that described first writing speed is determined, calculate another corrected power value of described second writing speed; And
Determine the 3rd writing speed on the basis of described another corrected power value, described the 3rd writing speed is less than described second writing speed.
38. method as claimed in claim 37 is characterized in that, described the 3rd writing speed is to calculate on the basis of the linear function of finding the solution following RS1:
P＝(A-B)/(C-D)·(RS1-RS2)+C
Wherein, P is corresponding to described another corrected power value, A is corresponding to the reference power value under described second writing speed, B is corresponding to the reference power value under described first writing speed, C is corresponding to described second writing speed, D is corresponding to described first writing speed, and RS2 is described first writing speed, and C is a constant.
39. method as claimed in claim 38 is characterized in that, record data comprise:
On the basis of the performance number of first scope of the speed between described first writing speed and described the 3rd writing speed in the described data of described disc recording; And
The power that described another corrected power of speed between use and described the 3rd writing speed and described second writing speed is worth corresponding substantial constant is in described disc recording data, and the performance number of wherein said first scope comprises in performance number that described first writing speed is determined and the performance number between described another corrected power value.
40. method as claimed in claim 39 is characterized in that, described data inner periphery district from dish when described dish is with the angular velocity rotation of substantial constant is recorded to the excircle district.
41. method as claimed in claim 37 is characterized in that, described the 3rd writing speed is calculated on the basis of the linear function of finding the solution following RS:
P＝M·(RS-Q)+C
Wherein P is corresponding to described another corrected power value, and M is based on the difference between the reference power value under described first and second writing speeds and the ratio of the difference between described first and second writing speeds, and Q is corresponding to described first writing speed, and C is a constant.
42. method as claimed in claim 41 is characterized in that, record data comprise:
On the basis of the performance number of first scope of the speed between described first writing speed and described the 3rd writing speed in the described data of disc recording; And
The power that described another corrected power of speed between use and described the 3rd writing speed and described second writing speed is worth corresponding substantial constant is in described disc recording data, and the performance number of wherein said first scope comprises in performance number that described first writing speed is determined and the performance number between described another corrected power value.
43. method as claimed in claim 42 is characterized in that, described data inner periphery district from described dish when described dish is with the angular velocity rotation of substantial constant is recorded to the excircle district.
44. method as claimed in claim 16 is characterized in that, described data inner periphery district from described dish when described dish is with the angular velocity rotation of substantial constant is recorded to the excircle district.
45. method as claimed in claim 16 is characterized in that, described data with constant linear velocity from the inner periphery district of described dish to excircle district record.
46. method as claimed in claim 45 is characterized in that, described data are to write down with constant linear velocity in the Constant Angular Velocity that changes described dish.
47. method as claimed in claim 16 is characterized in that, described predetermined value is corresponding to the regulation power that is used at the laser instrument of described disc recording data.
48. method as claimed in claim 47 is characterized in that, described regulation power is the peak power of described laser instrument.
49. method as claimed in claim 16 is characterized in that, the performance number of described second writing speed is calculated with compensates.
50. the device at the CD identifying recording layer comprises:
Pick-up head;
Spindle Motor is used to rotate described dish; And
Controller is used to control the data recording on the described dish, described controller:
First writing speed is determined a performance number;
On the basis of the performance number that described first writing speed is determined, second writing speed is calculated a performance number; And
To compare with a predetermined value to the performance number that described second writing speed is calculated; And
On the result's of described comparison basis, be controlled at the data recording on the described dish.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020060054815A KR100712778B1 (en) | 2006-06-19 | 2006-06-19 | Method for recording data in optical disc device |
| KR1020060054818A KR100782184B1 (en) | 2006-06-19 | 2006-06-19 | Method for recording data in optical disc device |
| KR1020060054815 | 2006-06-19 | ||
| KR1020060054818 | 2006-06-19 | ||
| KR10-2006-0054818 | 2006-06-19 | ||
| KR10-2006-0054815 | 2006-06-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101093675A true CN101093675A (en) | 2007-12-26 |
| CN101093675B CN101093675B (en) | 2010-09-15 |
Family
ID=38991882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100971373A Expired - Fee Related CN101093675B (en) | 2006-06-19 | 2007-04-12 | Method and apparatus for recording data in an optical disk device |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR100782184B1 (en) |
| CN (1) | CN101093675B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104766616A (en) * | 2014-01-06 | 2015-07-08 | 日立-Lg数据存储韩国公司 | Method of controlling power in optical disc apparatus |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100746767B1 (en) * | 2000-12-26 | 2007-08-06 | 엘지전자 주식회사 | Method for recording the data on a optical disc using optimal writing power |
| KR20030073240A (en) * | 2002-03-09 | 2003-09-19 | 주식회사 엘지이아이 | Method for compensation of writing power |
| KR20050023799A (en) * | 2003-09-02 | 2005-03-10 | 주식회사 히타치엘지 데이터 스토리지 코리아 | Method for detecting a writing power in optical disc driver |
| CN1674121A (en) * | 2004-03-22 | 2005-09-28 | 建兴电子科技股份有限公司 | Speed multiplying reducing writing control method for CD read writer |
| KR100684409B1 (en) * | 2004-05-19 | 2007-02-16 | 주식회사 히타치엘지 데이터 스토리지 코리아 | An apparatus and method for detecting the writing power in optical disc driver |
-
2006
- 2006-06-19 KR KR1020060054818A patent/KR100782184B1/en not_active IP Right Cessation
-
2007
- 2007-04-12 CN CN2007100971373A patent/CN101093675B/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104766616A (en) * | 2014-01-06 | 2015-07-08 | 日立-Lg数据存储韩国公司 | Method of controlling power in optical disc apparatus |
| CN104766616B (en) * | 2014-01-06 | 2019-04-09 | 日立-Lg数据存储韩国公司 | The method of power is controlled in compact disk equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101093675B (en) | 2010-09-15 |
| KR100782184B1 (en) | 2007-12-04 |
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