CN100388361C - Driving force parameter generating method - Google Patents
Driving force parameter generating method Download PDFInfo
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- CN100388361C CN100388361C CNB2005100981785A CN200510098178A CN100388361C CN 100388361 C CN100388361 C CN 100388361C CN B2005100981785 A CNB2005100981785 A CN B2005100981785A CN 200510098178 A CN200510098178 A CN 200510098178A CN 100388361 C CN100388361 C CN 100388361C
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- driving force
- address mark
- force parameter
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Abstract
The invention is concerned with the production method of driving power parameter uses for CD driver with one moveable optical reading head. The method relates to the follow steps. Inputting one light deposited medium with mark of absolute address, CD driver moves optical reading head from the first absolute address mark towards the second absolute address mark for the driving power parameter coming form different complex number values. According the result of moving the first absolute address mark towards the second absolute address mark, take one extremum during the complex number entries driving power parameters that can't move the first absolute address mark towards the second absolute address mark as one index value. Add one implied number to the index value and form one high-point driving power parameter using for moving the optical reading head in the CD driver.
Description
Technical field
The present invention is a kind of driving force parameter generating method, and finger is applied to the driving force parameter generating method on the CD-ROM drive especially.
Background technology
See also Fig. 1, it is the function block schematic diagram of a CD-ROM drive, wherein this CD-ROM drive (opticaldisc drive) 100 mainly has an optical read head (optical pickup head, be called for short PUH) 10, and light memory medium 110 is to be subjected to the drive of a Spindle Motor 120 and to rotate.There are two and drive the mechanism that this optical read/write head 10 moves radially, first is that the coaster 102 that drives this CD ROM reading-writing head 10 is grown the coaster motor 130 (sled motor) that distance moves, second be the lens 101 that drive this CD ROM reading-writing head 10 carry out that trace moves follow path circle 140 (tracking coil).In addition, driving this optical read/write head 10 carries out mechanism that focus direction moves and then is focusing coil 145 one of shown in the figure.
And the ultra-weak electronic signal that produces after reading on 10 pairs of light memory mediums 110 of optical read/write head, to be handled after the back produces a radiofrequency signal RF (Radio-Frequency signal), tracking error signal TE (tracking errorsignal) and focus error signal FE output signals such as (Focusing error signal) by radio frequency amplifier (radio-frequency amplifier) 150, the microprocessor 170 (microprocessor) of sending into the rear end is again handled and is used.First motor driver 160 (motor driver) then is subjected to microprocessor 170 to export three drive signals according to tracking error signal TE (tracking error signal) with the variation of focus error signal FE, and then respectively to this coaster motor 130, follow path circle 140 and send suitable driving force with focusing coil 145, make this optical read/write head 10 can move radially to correct track, keep correct following the rail position and maintain suitable focal position to carry out data read or burning.Then also be subjected to the control of microprocessor 170 and export a drive signal as for second motor driver 165 (motor driver), this Spindle Motor 120 is sent suitable driving force, this disc is rotated on the suitable rotating speed.
Can know by last figure and to find out, that drive that this CD ROM reading-writing head 10 grows that distance moves is coaster motor 130 (sled motor), first motor driver 160 (motor driver) then is subjected to the control of the drive voltage signal that microprocessor 170 exported, again this coaster motor 130 is sent suitable drive current, and then make coaster motor 130 see through gear train 190 to drive CD ROM reading-writing head 10 and grow distance and move.And in the mobile task of CD ROM reading-writing head 10, it is the action of coaster playback (move sled home) that one key name is arranged, it mainly is because CD-ROM drive also can't be known electric power starting at that time, the definite position that CD ROM reading-writing head 10 is parked, so must be in the very first time of electric power starting, it is moved to a default initial point, and microprocessor 170 must be exported the coaster drive voltage signal that playbacks and drove CD ROM reading-writing head 10 and get back to default initial point this moment.
And the data of above-mentioned coaster playback drive voltage signal are to be recorded in the firmware of CD-ROM drive, its be by manufacturer in a certain type manufacture and design finish and after tested after determine one and represent the numerical value in driving force road and be recorded in the firmware.Even but the CD-ROM drive of same type machine, because of parts assembling difference will cause coaster motor 130 different with the friction impedance of gear train 190, therefore write down in the firmware and represent one of this coaster playback drive voltage signal fixed numbers data, and can't contain the degree of becoming different of same type machine CD-ROM drive.To cause following several situation thus: the first, when the coaster motor 130 and the friction impedance of gear train 190 are excessive, too small driving power can't promote CD ROM reading-writing head 10 and move.The second, when the coaster motor 130 and the friction impedance of gear train 190 are too small, excessive driving power will cause discordant sound even bump.And record is that CD ROM reading-writing head 10 carries out follow-up jumping onto the tracks and the important references value of required driving force when following rail about the numeric data of coaster playback drive voltage signal in the above-mentioned firmware.Therefore will have a strong impact on the literacy of CD-ROM drive with the unmatched numeric data of virtual condition.And how to improve the disappearance of above-mentioned existing means, for developing fundamental purpose of the present invention.
Summary of the invention
The object of the invention provides a kind of disappearance of improving above-mentioned existing means, and numeric data a kind of and the virtual condition coupling is provided, and makes it not influence the literacy of CD-ROM drive.
The present invention is a kind of driving force parameter generating method, be applied on the CD-ROM drive, this light memory device includes one of can move optical read head, and this method comprises the following step: insert a light memory medium, have the specific address mark on this light memory medium; CD-ROM drive is in response to the different driving force parameter of a plurality of numerical value, and this optical read head is moved towards one second specific address mark by one first specific address mark; In response to this optical read head is moved to the result of this second specific address mark by this first specific address mark, the extreme value in a plurality of driving force parameters that this optical read head can't be moved to this second specific address mark by this first specific address mark is taken out as an index value; And this index value added a default value and form an optimization driving force parameter, and be recorded in this CD-ROM drive reference when driving this optical read head and move.
According to above-mentioned conception, driving force parameter generating method of the present invention, this CD-ROM drive that it was applied to is a cd-ROM or a cd-recorder, and wherein inserting this light memory medium can be the discs that is compatible with a specification among CD, CD-R, CD-RW, DVD, DVD-R, DVD+R, DVD-RW, DVD+RW and the DVD-RAM; One of have the specific address mark on this light memory medium and then can be in ATIP, ADIP, PPIT, Q-code, ID-code and the data field record positional information.
According to above-mentioned conception, driving force parameter generating method of the present invention, wherein the numerical value of this driving force parameter is big more, represent driving force big more, and be maximum value one of in a plurality of driving force parameters that this optical read head can't be moved to this second specific address mark by this first specific address mark as this extreme value of this index value; In addition, in an embodiment, more can choose a minimal value in producing noise or producing in a plurality of driving force parameters of excessive collision, and the difference between this index value and this minimal value be multiply by a preset ratio to determine this default value, wherein this preset ratio can be 0.5.
According to above-mentioned conception, driving force parameter generating method of the present invention, wherein the numerical value of this driving force parameter is more little, represent driving force big more, and be minimal value one of in a plurality of driving force parameters that this optical read head moved to this second specific address mark by this first specific address mark as this extreme value of this index value.
According to above-mentioned conception, driving force parameter generating method of the present invention, wherein this optimization driving force parameter is one of to be recorded in this CD-ROM drive in the firmware.
Description of drawings
Fig. 1 is the function block schematic diagram of a CD-ROM drive;
Fig. 2 is that the present invention develops out the schematic flow sheet in order to the driving force parameter generating method that improves above-mentioned existing disappearance;
Fig. 3 is the driving force parameter coordinate synoptic diagram that the present invention produces.
[primary clustering symbol description]
Each the column of assemblies formula that is comprised during the present invention is graphic is as follows:
CD-ROM drive 100 optical read heads 10
Rotation motor 120 sled motors 130
Lens 101 follow path circle 140
Focusing coil 145 light memory mediums 110
Radio frequency amplifier 150 microprocessors 170
First motor driver, 160 second motor drivers 165
Gear train 190 coasters 102
Embodiment
It is that the present invention develops out the schematic flow sheet in order to the driving force parameter generating method that improves above-mentioned existing disappearance to see also Fig. 2, it can be used in hardware structure as shown in Figure 1, this CD-ROM drive can be cd-ROM or cd-recorder, and this light memory medium 110 can be to be compatible with CD, CD-R, CD-RW, DVD, DVD-R, DVD+R, DVD-RW, the discs of specification such as DVD+RW or DVD-RAM, microprocessor 170 then sends driving voltage according to a driving force parameter, sees through the conversion of first motor driver 160 and forms and drive the required drive current of coaster motor 130.After a CD-ROM drive assembling is finished, the present invention is can be in response to the degree of becoming different of same type machine CD-ROM drive assembling, carry out the following step shown in Figure 2 and produce corresponding driving force parameter: at first, people are prior to inserting a light memory medium in the CD-ROM drive, but must have the specific address mark on this light memory medium (for example is ATIP, ADIP, PPIT, Q-code, ID-code or positional information or the like that the data field is put down in writing), and then one of carry out in the firmware (not illustrating among the figure) be stored in CD-ROM drive 100 the section program code, this section program code provides the different driving force parameter of a plurality of numerical value to CD-ROM drive earlier, allows this optical read head 10 carry out the action of being moved towards one second specific address mark by the first specific address mark one of on this light memory medium according to the different driving force parameter of numerical value.Cooperate Fig. 1 to illustrate, microprocessor 170 utilizes coaster motor 130 that optical read head 10 can be divided into two kinds by the result that this first specific address mark moves to this second specific address mark in response to the different driving force parameter of numerical value, first kind is to have enough powers this optical read head successfully can be moved to this second specific address mark by this first specific address mark, another then is not have enough powers that this optical read head is moved to this second specific address mark by this first specific address mark, people just one of in second kind of result driving force parameter extreme value take out as an index value.And then utilize this index value to add a default value and form an optimization driving force parameter, and carry out reference when this optimization driving force reference record moved for this optical read head of subsequent drive in the firmware of this CD-ROM drive 10.
Wherein when the numerical value of this driving force parameter big more, when represent driving force big more, this extreme value is that this optical read head one of is moved in a plurality of driving force parameters of this second specific address mark maximum value by this first specific address mark.And the numerical value of working as this driving force parameter is more little, when representing driving force big more, then be minimal value one of in a plurality of driving force parameters that this optical read head can't be moved to this second specific address mark by this first specific address mark as this extreme value of this index value.
See also Fig. 3, it is big more with the numerical value when this driving force parameter, when representing driving force more greatly routine, find out this index value one driving force parameter coordinate synoptic diagram, because can knowing, system knows whether this driving force parameter can move to this second specific address mark by this first specific address mark with optical read head, so the result can very clearly be divided into two groups, first group is to have enough powers this optical read head successfully can be moved to the driving force parameter of this second specific address mark by this first specific address mark, second group then is not have enough powers that this optical read head is moved to the driving force parameter of this second specific address mark by this first specific address mark, and the driving force parameter (P as shown in FIG.) of taking out greatest measure in second group just can be used as index value of the present invention.In addition, see through the minimum value (Q as shown in FIG.) of the driving force parameter that observation can cause discordant sound even bump excessive, people just can determine in the firmware of this default value (for example difference (Q-P) being multiply by a preset ratio 0.5) and storage and each homotype CD-ROM drive 10, and then can be combined at last with different assembled states and change this optimization driving force parameter (M as shown in FIG.), this parameter will be to allow the smooth and easy operation of coaster but can not send living noise or produce the optimization parameter of collision, can be in order to be used as the numeric data of coaster playback drive voltage signal, and provide system to carry out follow-up jumping onto the tracks and the important references value of required driving force when following rail, in order to produce the driving force numeric data that is complementary with virtual condition, and can effectively improve the literacy of CD-ROM drive, and then can improve the disappearance of above-mentioned existing means, reach development fundamental purpose of the present invention.
The present invention produces the optimization driving force parameter except carry out above-mentioned steps by manufacturer after assembling is finished, also can finish or parts carry out when aging once replacing initial value again, and then ask for and meet the optimization driving force parameter of parts situation at that time in breakdown maintenance.
In sum, the technology of the present invention means are not needing to change under the situation of hardware configuration, just can thoroughly reach development fundamental purpose of the present invention in the disappearance of improving existing means in the mode of replacement system firmware.But the above only is the preferred embodiment of this creation, be not in order to limit claim of the present invention, and the technology of the present invention thought can be applied to VCD player, Video CD CD writers widely, have on the light storage read-write devices such as Video CD videocorder of recording function, therefore all other do not break away from the equivalence of being finished under the disclosed spirit and changes or modification, all should be included in the following claim.
Claims (9)
1. a driving force parameter generating method is applied on the CD-ROM drive, and this CD-ROM drive includes one of can move optical read head, it is characterized in that this method comprises the following step:
Insert a light memory medium, have one first specific address mark and one second specific address mark on this light memory medium;
Provide a plurality of numerical value different driving force parameters,, this optical read head is moved towards this second specific address mark by this first specific address mark in order to make this CD-ROM drive according to the different driving force parameter of these a plurality of numerical value;
Extreme value in driving force parameter that can't a plurality of numerical value that this optical read head moves to this second specific address mark by this first specific address mark are different is taken out as an index value; And
This index value is added a default value and forms an optimization driving force parameter, and this index value is recorded in this CD-ROM drive reference when driving this optical read head and move.
2. driving force parameter generating method as claimed in claim 1 is characterized in that, this CD-ROM drive that it was applied to is a cd-ROM or a cd-recorder.
3. driving force parameter generating method as claimed in claim 1 is characterized in that this light memory medium of inserting is the discs that is compatible with a specification among CD, CD-R, CD-RW, DVD, DVD-R, DVD+R, DVD-RW, DVD+RW and the DVD-RAM.
4. driving force parameter generating method as claimed in claim 1 is characterized in that, has specific address on described this light memory medium and one of is labeled as in ATIP, ADIP, PPIT, Q-code, ID-code and the data field record positional information.
5. driving force parameter generating method as claimed in claim 1, it is characterized in that, the numerical value of described this driving force parameter is big more, represent driving force big more, and be the maximum value in a plurality of driving force parameters that this optical read head can't be moved to this second specific address mark by this first specific address mark as this extreme value of this index value.
6. driving force parameter generating method as claimed in claim 5 is characterized in that, described this comprises step:
Choose a minimal value in producing noise or producing in a plurality of driving force parameters of excessive collision; And
Difference between this index value and this minimal value be multiply by a preset ratio to determine this default value.
7. driving force parameter generating method as claimed in claim 6 is characterized in that, described this preset ratio is 0.5.
8. driving force parameter generating method as claimed in claim 1, it is characterized in that, the numerical value of described this driving force parameter is more little, represent driving force big more, and be the minimal value in a plurality of driving force parameters that this optical read head can't be moved to this second specific address mark by this first specific address mark as this extreme value of this index value.
9. driving force parameter generating method as claimed in claim 1 is characterized in that, described this optimization driving force parameter is a firmware that is recorded in this CD-ROM drive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100981785A CN100388361C (en) | 2005-09-12 | 2005-09-12 | Driving force parameter generating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100981785A CN100388361C (en) | 2005-09-12 | 2005-09-12 | Driving force parameter generating method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1932982A CN1932982A (en) | 2007-03-21 |
| CN100388361C true CN100388361C (en) | 2008-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100981785A Expired - Fee Related CN100388361C (en) | 2005-09-12 | 2005-09-12 | Driving force parameter generating method |
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| CN (1) | CN100388361C (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001034960A (en) * | 1999-07-27 | 2001-02-09 | Nec Corp | Optical disc device |
| US20030206505A1 (en) * | 2002-05-01 | 2003-11-06 | Media Tek Inc. | Optical disk drive with a servo control system |
| CN1514435A (en) * | 2002-12-31 | 2004-07-21 | 建兴电子科技股份有限公司 | Method of moving optical head module to starting point position |
-
2005
- 2005-09-12 CN CNB2005100981785A patent/CN100388361C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001034960A (en) * | 1999-07-27 | 2001-02-09 | Nec Corp | Optical disc device |
| US20030206505A1 (en) * | 2002-05-01 | 2003-11-06 | Media Tek Inc. | Optical disk drive with a servo control system |
| CN1514435A (en) * | 2002-12-31 | 2004-07-21 | 建兴电子科技股份有限公司 | Method of moving optical head module to starting point position |
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| Publication number | Publication date |
|---|---|
| CN1932982A (en) | 2007-03-21 |
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Granted publication date: 20080514 |