CN1581330A - Optical disk drive tray withdraw control method - Google Patents
Optical disk drive tray withdraw control method Download PDFInfo
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- CN1581330A CN1581330A CN 03127529 CN03127529A CN1581330A CN 1581330 A CN1581330 A CN 1581330A CN 03127529 CN03127529 CN 03127529 CN 03127529 A CN03127529 A CN 03127529A CN 1581330 A CN1581330 A CN 1581330A
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- pallet
- rom drive
- control method
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Abstract
When optical disk is placed to tray, first functional force is applied to tray optical drive to overcome a lesser magnetic attraction, when optical disk is not placed to tray, second functional force is applied to tray optical drive to overcome a larger magnetic attraction. Maximum of second functional force is larger than maximum of first functional force.
Description
Technical field
The present invention relates to a kind of pallet withdrawal control method of CD-ROM drive, particularly a kind ofly can control the method that pallet withdraws from strength according to whether having placed discs in the CD-ROM drive.
Background technology
Please refer to Fig. 1 a, it shows CD-ROM drive inner main axis motor, pallet and folder pincers schematic representation of apparatus.Module position in the CD-ROM drive is from the bottom to top in regular turn, Spindle Motor 10, pallet 20, with folder pincers device 40.And pallet 20 can be used to place discs 30, also has several protuberances (tab) 25 on the pallet 20, and when CD-ROM drive was vertically placed, protuberance 25 can held up discs 30, made discs 30 can not drop out pallet 20.
Please refer to Fig. 1 b, after pallet 20 was placed discs and inserted (Tray In) at pallet, Spindle Motor 10 can rise also prop up disc 30.Owing to embed a permanent magnet (not shown) on the Spindle Motor 10, and folder pincers device 40 is embedded in a magnetisable material (not shown).After Spindle Motor 10 rises, magnetisable material in the folder pincers device 40 is subjected to the attraction of Spindle Motor 10 internal permanent magnets, and therefore, folder pincers device 40 can be fixed discs 30 with Spindle Motor 10, and by the driven rotary discs 30 of Spindle Motor 10, the program of go forward side by side line search or read-write.
Please refer to Fig. 1 c, after pallet 20 was not placed discs and inserted (Tray In) at pallet, Spindle Motor 10 still can rise and attract the magnetisable material in the folder pincers device 40, and therefore, folder pincers device 40 can contact with Spindle Motor 10.
Because no matter pallet 20 has or not the placement discs, after pallet 20 was inserted, Spindle Motor 10 can rise and attract folder pincers device 40.And when pallet 20 withdrawed from (Tray Out), Spindle Motor 10 can descend, and then pallet 20 outwards moves.By Fig. 1 b as can be known, when being placed with discs 30 on the pallet 20,, make magnetic attraction less because discs 30 between folder pincers device 40 and Spindle Motor 10, is therefore pressed from both sides and had a gap between pincers device 40 and the Spindle Motor 10.And by Fig. 1 c as can be known, when not placing discs 30 on the pallet 20, can closely tie between folder pincers device 40 and the Spindle Motor 10 and touch, therefore the magnetic attraction that presss from both sides between pincers device 40 and the Spindle Motor 10 is bigger.
When pallet 20 will withdraw from, bestow one of pallet 20 and withdraw from strength and must overcome earlier after the bigger attractive force and can smoothly pallet 20 outwards be moved.When pallet 20 is placed discs 30, can't change owing to withdraw from strength, so pallet 20 can produce bigger vibrations.
In known technology, when CD-ROM drive is that level is put and pallet 20 when placing discs 30, the vibrations of pallet 20 also are unlikely to cause great influence.But, when CD-ROM drive for vertically putting and pallet 20 when placing discs 30, the vibrations of pallet can cause the protuberance 25 of pallet 20 to have no idea holding up discs 30, cause the CD-ROM drive situation that discs 30 drops when moving back sheet.
Reduce if bestow the strength that withdraws from of pallet 20, then might make pallet 20 have no idea to overcome magnetic attraction and cause whole pallet 20 successfully to withdraw from.
Summary of the invention
The pallet withdrawal control method that the purpose of this invention is to provide a kind of CD-ROM drive.No matter make when whether being placed with discs in the pallet, all can withdraw from stably, can not produce situation or the pallet that discs drops and withdraw from unsuccessful situation.
The present invention proposes a kind of pallet withdrawal control method of CD-ROM drive, and it is summarized as follows: at first, judge whether place discs on the pallet; When placing discs on the pallet, impose on pallet with first application of force function; And, when not placing discs on the pallet, impose on pallet with second application of force function; Wherein, the maximal value in second application of force function is greater than the maximal value of first application of force function.
According to the present invention, second application of force function is closely to contact the big magnetic attraction that is produced in order to overcome by Spindle Motor with folder pincers device.And first application of force function is closely not contact the less magnetic attraction that is produced in order to overcome Spindle Motor with folder pincers device.
In order to make feature of the present invention and technology contents clearer, see also following about detailed description of the present invention and accompanying drawing, yet this accompanying drawing only provide with reference to the usefulness of explanation, be not to be used for the present invention is limited.
Description of drawings
Synoptic diagram when Fig. 1 a, 1b, 1c show CD-ROM drive inner main axis motor, pallet, folder pincers device relative position and placement discs and do not place discs;
The pallet that Fig. 2 a and 2b show CD-ROM drive of the present invention withdraws from the strength oscillogram; And
Fig. 3 shows the pallet withdrawal control method of CD-ROM drive of the present invention.
The reference numeral explanation
10 Spindle Motors, 20 pallets
25 protuberances, 30 discs
40 folder pincers devices
Embodiment
The present invention be directed to the improvement that the known CD-ROM drive of vertically the putting situation that discs 30 drops when moving back sheet is done.Please refer to Fig. 2 a and Fig. 2 b, its pallet that shows CD-ROM drive of the present invention withdraws from the strength oscillogram.Wherein, voltage (V) value is promptly represented the strength that forces in pallet, and voltage is high more, represents strength big more.
Shown in Fig. 2 a, its pallet that shows when placing discs in the CD-ROM drive of the present invention withdraws from the strength waveform.Place discs and execution when withdrawing from operation when CD-ROM drive, shown in Fig. 2 a, providing the voltage that withdraws from strength 6V within initial 20ms, promptly changing the voltage that withdraws from strength afterwards is that 3.4V is up to 200ms.Tray position can not influenced by the attractive force of permanent magnet and the dotted line I that shows in the 200ms place promptly represents at this moment.A feeler can be used in this position, and for example limit switch (Limit Switch) is responded to.After 200ms, can provide suitable voltage to force in the pallet of placing discs as withdrawing from strength.
Shown in Fig. 2 b, its pallet that shows when not placing discs in the CD-ROM drive of the present invention withdraws from the strength waveform.Do not place discs and execution when withdrawing from operation when CD-ROM drive, shown in Fig. 2 b, providing the voltage that withdraws from strength 8V within initial 20ms, promptly changing the voltage that withdraws from strength afterwards is that 4.5V is up to 200ms.Tray position can not influenced by the attractive force of permanent magnet and the dotted line I that shows in the 200ms place promptly represents at this moment.After 200ms, can provide suitable voltage to force in the pallet of not placing discs as withdrawing from strength.
Learn by embodiments of the invention, when placing discs in the pallet, force in pallet and overcome the attractive force that permanent magnet is produced with the less strength that withdraws from, therefore, can overcome known owing to withdraw from the situation that strength causes pallet vibrations and discs to drop too greatly.When not placing discs in the pallet, force in pallet and overcome the attractive force that permanent magnet is produced with the bigger strength that withdraws from, therefore, can overcome known and withdraw from unsuccessful situation owing to withdraw from the too for a short time pallet that causes of strength.And the CD-ROM drive that the present invention is applied to vertically put, its improvement situation is more obvious.
Please refer to Fig. 3, it shows the pallet withdrawal control method of CD-ROM drive of the present invention.Carry out when withdrawing from CD-ROM drive, at first, judge on the pallet of CD-ROM drive whether place discs (S50).When placing discs on the pallet, impose on CD ROM support tray (S60) with one first application of force function, in order to overcome a less magnetic attraction.When pallet is not placed discs, impose on CD ROM support tray (S70) with one second application of force function, in order to overcome big magnetic attraction.Wherein, the maximal value of second application of force function is greater than the maximal value of first application of force function.
Therefore, advantage of the present invention provides the pallet withdrawal control method of CD-ROM drive.The present invention imposes on pallet with first application of force function, when placing discs in order to overcome pallet, because the situation that vibrations cause discs to drop too greatly.
Another advantage of the present invention provides the pallet withdrawal control method of CD-ROM drive.The present invention imposes on pallet with second application of force function, when not placing discs in order to overcome pallet, overcomes attractive force owing to having no idea and causes whole pallet successfully to withdraw from.
In sum; though the present invention discloses as above with preferred embodiment, so it is not that those skilled in the art without departing from the spirit and scope of the present invention in order to qualification the present invention; can be used for a variety of modifications and variations, so protection scope of the present invention is looked accompanying Claim and is as the criterion.
Claims (10)
1. the pallet withdrawal control method of a CD-ROM drive is used in a CD-ROM drive, comprises the following steps:
Judge and whether place a discs on the pallet;
When on this pallet, placing this discs, impose on this pallet with one first application of force function; And
When on this pallet, not placing this discs, impose on this pallet with one second application of force function;
Wherein, the maximal value in this second application of force function is greater than a maximal value of this first application of force function.
2. the pallet withdrawal control method of CD-ROM drive according to claim 1, wherein this second application of force function system is in order to overcome big magnetic attraction.
3. as the pallet withdrawal control method of CD-ROM drive as described in the claim 2, wherein should big magnetic attraction be by a Spindle Motor and press from both sides the pincers device closely contact produce.
4. the pallet withdrawal control method of CD-ROM drive according to claim 1, wherein this first application of force function is in order to overcome a less magnetic attraction.
5. as the pallet withdrawal control method of CD-ROM drive as described in the claim 4, wherein this less magnetic attraction be by a Spindle Motor and a folder pincers device closely do not contact produce.
6. the pallet withdrawal control method of CD-ROM drive according to claim 1, wherein this CD-ROM drive is for vertically putting.
7. the pallet withdrawal control method of a CD-ROM drive is used in the CD-ROM drive in order to overcome the attractive force between a Spindle Motor and the folder pincers device, comprises the following steps:
When this Spindle Motor does not closely contact with this folder pincers device, impose on a pallet with one first application of force function; And
When this Spindle Motor closely contacts with this folder pincers device, impose on this pallet with one second application of force function;
Wherein, the maximal value in this second application of force function is greater than a maximal value of this first application of force function.
8. as the pallet withdrawal control method of CD-ROM drive as described in the claim 7, wherein closely contact placement one discs in this pallet of interval scale when this Spindle Motor and this folder pincers device.
9. as the pallet withdrawal control method of CD-ROM drive as described in the claim 7, wherein, this Spindle Motor do not place a discs when closely contacting in this pallet of interval scale with this folder pincers device.
10. as the pallet withdrawal control method of CD-ROM drive as described in the claim 7, wherein this CD-ROM drive is for vertically putting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03127529 CN1260722C (en) | 2003-08-06 | 2003-08-06 | Optical disk drive tray withdraw control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03127529 CN1260722C (en) | 2003-08-06 | 2003-08-06 | Optical disk drive tray withdraw control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1581330A true CN1581330A (en) | 2005-02-16 |
| CN1260722C CN1260722C (en) | 2006-06-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03127529 Expired - Fee Related CN1260722C (en) | 2003-08-06 | 2003-08-06 | Optical disk drive tray withdraw control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1260722C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105223807A (en) * | 2014-06-30 | 2016-01-06 | 惠州市德赛西威汽车电子股份有限公司 | A kind of automobile-used movement goes out self-adaptation control method and the adaptive system of dish power |
-
2003
- 2003-08-06 CN CN 03127529 patent/CN1260722C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105223807A (en) * | 2014-06-30 | 2016-01-06 | 惠州市德赛西威汽车电子股份有限公司 | A kind of automobile-used movement goes out self-adaptation control method and the adaptive system of dish power |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1260722C (en) | 2006-06-21 |
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| C06 | Publication | ||
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| C10 | Entry into substantive examination | ||
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| C14 | Grant of patent or utility model | ||
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| ASS | Succession or assignment of patent right |
Owner name: GUANGBAO SCIENCE + TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: JIANXING ELECTRONIC SCIENCE +. TECHNOLOGY CO., LTD. Effective date: 20140702 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20140702 Address after: Taipei City, Taiwan, China Patentee after: Lite-On Technology Corporation Address before: Hsinchu City, Taiwan, China Patentee before: Jianxing Electronic Science &. Technology Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060621 Termination date: 20140806 |
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| EXPY | Termination of patent right or utility model |