CN101359494A - CD-ROM and electronic device thereof - Google Patents
CD-ROM and electronic device thereof Download PDFInfo
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- CN101359494A CN101359494A CNA2007100258259A CN200710025825A CN101359494A CN 101359494 A CN101359494 A CN 101359494A CN A2007100258259 A CNA2007100258259 A CN A2007100258259A CN 200710025825 A CN200710025825 A CN 200710025825A CN 101359494 A CN101359494 A CN 101359494A
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- rom drive
- circuit board
- conductive structure
- pallet
- bulk
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Abstract
A CD driver and an electronic device thereof are disclosed, comprising a CD driver main body, a tray and a winding. The CD driver is provided with a first circuit board and a plurality of first conduction structures, which are electrically connected. The tray is movably arranged on the CD driver main body and can get in and out of the CD driver main body; the tray is provided with a second circuit board and a plurality of second conduction structures, which are electrically connected. The winding is used for electrically connecting the first circuit board and the second circuit board. When the tray is located in the CD driver main body, the first conduction structures are correspondingly electrically connected with the second conduction structures and the CD driver makes use of the conducted first and second conduction structures and the winding to transmit the needed signals to the area between the first circuit board and the second circuit board. When the tray is located outside the CD driver main body, the first conduction structures and the second conduction structures are electrically disconnected and the CD driver makes use of the winding to transmit the needed signals to the area between the first circuit board and the second circuit board.
Description
Technical field
The present invention relates to a kind of CD-ROM drive and electronic installation thereof, and be particularly related to the control signal transmission of CD-ROM drive and electronic installation thereof.
Background technology
Traditional slim optical drive comprises CD-ROM drive bulk, pallet and U-shaped winding displacement.CD-ROM drive bulk has the CD-ROM drive motherboard.Pallet is arranged on the CD-ROM drive bulk in a movable manner, and can pass in and out inside and outside the CD-ROM drive bulk.Pallet has the motor control circuit plate.The U-shaped winding displacement is arranged between CD-ROM drive bulk and the pallet, in order to be electrically connected at CD-ROM drive motherboard and motor control circuit plate respectively, as a plurality of control signal transmission paths.
This CD-ROM drive more comprise optical read head (optical pickup unit, OPU), Spindle Motor, step motor and holding tray motor.Optical read head is arranged on the pallet in a movable manner, in order to read the data of discs.Spindle Motor is arranged on the pallet, in order to the rotary CD sheet.Step motor is arranged on the pallet, in order to the mobile optical read head.Holding tray motor is arranged on the pallet, uses so that pallet moves inside and outside CD-ROM drive bulk.Optical read head, Spindle Motor, step motor and holding tray motor are electrically connected at the motor control circuit plate respectively.
When pallet is positioned at CD-ROM drive bulk, CD-ROM drive will required control signal input this moment motor control circuit plate via the U-shaped winding displacement by the CD-ROM drive motherboard, and by the motor control circuit buttress in view of the above control signal control the running of optical read head, Spindle Motor, step motor and holding tray motor.In addition, in the time of outside pallet is positioned at CD-ROM drive bulk, CD-ROM drive by the CD-ROM drive motherboard via the U-shaped winding displacement will this moment required control signal be input to the motor control circuit plate, and by the motor control circuit buttress in view of the above control signal control the running of holding tray motor.Therefore, the U-shaped winding displacement must have enough length, makes to reach this when external when pallet is positioned at CD-ROM drive bulk, and the CD-ROM drive motherboard all can be input to the motor control circuit plate with control signal through U-shaped winding displacement thus.Because the length of general U-shaped winding displacement is about 15 centimetres, can cause the decay of control signal, and the length of U-shaped winding displacement is when long more, and signal attenuation is more showing.In addition, traditional winding displacement be owing to need provide unlike signal transmission between the circuit board when pallet passes in and out this inside and outside, so winding displacement must have abundant pin number, to reach above-mentioned purpose.But, therefore when the length of this U-shaped winding displacement or the increase of pin number, the cost of CD-ROM drive is improved relatively because the cost of manufacture of U-shaped winding displacement is higher.
Summary of the invention
The purpose of this invention is to provide a kind of CD-ROM drive and electronic installation thereof, when pallet is positioned at CD-ROM drive bulk, use required signal a plurality of conductive structures and winding displacement transmission this moment, in order to avoid the long problem that causes signal attenuation of winding displacement.And outside pallet is positioned at CD-ROM drive bulk the time, winding displacement only need transmit required control signal this moment.Therefore, can reduce the pin number of winding displacement, reduce the width of winding displacement, and reduce the spent cost of winding displacement, and then reduce the cost of CD-ROM drive.
According to purpose of the present invention, kind of a CD-ROM drive is proposed, comprise CD-ROM drive bulk, pallet and winding displacement.This CD-ROM drive bulk has first circuit board and a plurality of first conductive structure of mutual electric connection.Pallet is arranged on the CD-ROM drive bulk in a movable manner, and can pass in and out inside and outside the CD-ROM drive bulk, and pallet has second circuit board and a plurality of second conductive structure of mutual electric connection.Winding displacement be arranged at CD-ROM drive bulk and pallet between, in order to electrically connect first circuit board and second circuit board respectively.When pallet is positioned at CD-ROM drive bulk, first conductive structure is in order to electrically connecting with second conductive structure accordingly, CD-ROM drive utilize first conductive structure, second conductive structure and the winding displacement of mutual conduction will this moment required signal be transferred between first circuit board and second circuit board.In the time of outside pallet is positioned at CD-ROM drive bulk, first conductive structure and second conductive structure are electrically isolated, CD-ROM drive utilize winding displacement will this moment required signal be transferred between first circuit board and second circuit board.
According to purpose of the present invention, a kind of electronic installation is proposed, comprise casing and be arranged at CD-ROM drive on the described casing.Wherein, CD-ROM drive comprises CD-ROM drive bulk, pallet and winding displacement.CD-ROM drive bulk has first circuit board and a plurality of first conductive structure of mutual electric connection.Pallet is arranged on the CD-ROM drive bulk movably can pass in and out the mode inside and outside the CD-ROM drive bulk.Pallet has second circuit board and a plurality of second conductive structure of mutual electric connection.Winding displacement is in order to electrically connect first circuit board and second circuit board respectively.When pallet is positioned at CD-ROM drive bulk, first conductive structure is in order to electrically connecting with second conductive structure accordingly, CD-ROM drive utilize first conductive structure, second conductive structure and the described winding displacement of mutual conduction will this moment required signal be transferred between first circuit board and second circuit board.In the time of outside pallet is positioned at CD-ROM drive bulk, first conductive structure and second conductive structure are electrically isolated, CD-ROM drive utilize winding displacement will this moment required signal be transferred between first circuit board and second circuit board.
For foregoing of the present invention can be become apparent, preferred embodiment cited below particularly, and cooperate appended graphicly, be described in detail below:
Fig. 1 illustrates the CD-ROM drive synoptic diagram according to first embodiment of the invention.
Fig. 2 A illustrates the vertical view according to first conductive structure of first embodiment of the invention.
Fig. 2 B illustrates the upward view according to second conductive structure of first embodiment of the invention.
Fig. 3 A illustrates the circuit block diagram of CD-ROM drive when pallet is positioned at CD-ROM drive bulk of Fig. 1.
Fig. 3 B illustrates first conductive structure, the section of structure when second conductive structure electrically conducts of the CD-ROM drive of Fig. 1.
The circuit block diagram of the CD-ROM drive that Fig. 4 A illustrates Fig. 1 outside pallet is positioned at CD-ROM drive bulk the time.
Fig. 4 B illustrates CD-ROM drive first conductive structure, the section of structure when second conductive structure does not electrically conduct of Fig. 1.
Fig. 5 illustrates the CD-ROM drive synoptic diagram according to second embodiment of the invention.
Fig. 6 A illustrates the circuit block diagram of CD-ROM drive when pallet is positioned at CD-ROM drive bulk of Fig. 5.
The circuit block diagram of the CD-ROM drive that Fig. 6 B illustrates Fig. 5 outside pallet is positioned at CD-ROM drive bulk the time.
Fig. 7 illustrates the electronic installation synoptic diagram according to third embodiment of the invention.
Embodiment
First embodiment
Please be simultaneously with reference to Fig. 1～2B, Fig. 1 illustrates the CD-ROM drive synoptic diagram according to first embodiment of the invention.Fig. 2 A illustrates the vertical view according to first conductive structure of present embodiment.Fig. 2 B illustrates the upward view according to second conductive structure of present embodiment.CD-ROM drive 10 comprises CD-ROM drive bulk 11, pallet 12 and winding displacement 13.CD-ROM drive bulk 10 has first circuit board 14a and a plurality of first conductive structure 15a, and the first conductive structure 15a for example is a plurality of electroconductive elastic sheets (shown in Fig. 2 A).First circuit board 14a is electrically connected at the first conductive structure 15a.Pallet 12 is arranged on the CD-ROM drive bulk 11, and can be in being displaced into inside and outside the CD-ROM drive bulk 11.Pallet 12 also has second circuit board 14b and a plurality of second conductive structure 15b, and the second conductive structure 15b for example is a plurality of connection gaskets (shown in Fig. 2 B).Second circuit board 14b is electrically connected at the second conductive structure 15b.Winding displacement 13 is arranged at 11 of pallet 12 and CD-ROM drive bulk, and is electrically connected at first circuit board 14a and second circuit board 14b respectively.In addition, CD-ROM drive 10 more comprises optical read head 19, Spindle Motor 16, step motor 17 and the holding tray motor 18 that is electrically connected at second circuit board 14b respectively.Optical read head 19 is arranged on the pallet 12 movably, in order to read the data of discs (not illustrating among the figure).Spindle Motor 16 is in order to drive the discs rotation.Step motor 17 is in order to mobile optical read head 19.Holding tray motor 18 in order to mobile pallet 12 inside and outside CD-ROM drive bulk 11.
Please be simultaneously with reference to Fig. 3 A and Fig. 3 B.Fig. 3 A illustrates the circuit block diagram of CD-ROM drive when pallet is positioned at CD-ROM drive bulk of Fig. 1.Section of structure when Fig. 3 B illustrates first conductive structure of CD-ROM drive of Fig. 1 and second conductive structure and electrically conducts.When pallet 12 be positioned at CD-ROM drive bulk 11 the time, the first conductive structure 15a is electrically connected at the second conductive structure 15b.This moment, first circuit board 14a output a control signal to second circuit board 14b via winding displacement 13 with this first conductive structure 15a that electrically conducts a bit and the second conductive structure 15b.Second circuit board 14b is according to the running of this control signal control Spindle Motor 16 and step motor 17.After Spindle Motor 16 drives the discs rotation, optical read head 19 projection laser light are on discs, by the laser light of induction light disc reflection, and by step motor 17 mobile optical read heads 19, discs is focused on, locks rail, follows rail, jumps onto the tracks and action such as skip floor.This control signal is via winding displacement 13 and this first conductive structure 15a that electrically conducts a bit and second conductive structure 15b transmission.Wherein in the control signal via winding displacement 13 transmission, comprise power supply signal at least.By avoided in the traditional CD-ROM drive because of control signal all by the problem of winding displacement transmission priming signal decay.
Please be simultaneously with reference to Fig. 4 A and Fig. 4 B.The circuit block diagram of the CD-ROM drive that Fig. 4 A illustrates Fig. 1 outside pallet is positioned at CD-ROM drive bulk the time.Section of structure when Fig. 4 B illustrates first conductive structure of Fig. 1 and second conductive structure and do not electrically conduct.In the time of outside pallet 12 is positioned at CD-ROM drive bulk 11, the first conductive structure 15a is not connected with the second conductive structure 15b, is electrical state of isolation.This moment first circuit board 14a only via 13 output this moments of winding displacement required control signal to second circuit board 14b, for example control signal of power supply signal and holding tray motor 18.By reducing the pin number of winding displacement 13, with the cost of reduction winding displacement 13, and then the cost of reduction CD-ROM drive 10.
In the present embodiment, the first conductive structure 15a and the second conductive structure 15b are that example illustrates with a plurality of electroconductive elastic sheets and a plurality of connection gasket respectively.The first conductive structure 15a also can be a plurality of connection gaskets, and these a little second conductive structure 15b also can be a plurality of electroconductive elastic sheets.This first circuit board 14a for example is CD-ROM drive motherboard (main board), and this second circuit board 14b for example is motor control circuit plate (motorboard).This winding displacement 13 for example is U type winding displacement (U-sbape cable) or flexible printed circuit (flexible printed circuit board).And this winding displacement 13 provides the power delivery path.And the first conductive structure 15a that electrically conducts mutually and the second conductive structure 15b provide a plurality of control signal transmission paths.
According to as described in the first embodiment of the present invention, when pallet was positioned at CD-ROM drive bulk, the control signal that first circuit board is exported to second circuit board was by winding displacement and a plurality of first conductive structures that electrically conduct and the transmission of a plurality of second conductive structure as above.So can avoid control signal to cause the problem of signal attenuation, and then prevent that CD-ROM drive from producing the abnormal phenomenon of running because of the winding displacement transmission.And when pallet was positioned at CD-ROM drive bulk outer, winding displacement only need transmit required control signal this moment, for example power supply signal.Thereby present embodiment can reduce the pin number of winding displacement, and reduces the substantial width of winding displacement, with the cost of reduction winding displacement, and then the cost of reduction CD-ROM drive.
Second embodiment
Please refer to Fig. 5, its illustrate is according to the CD-ROM drive synoptic diagram of second embodiment of the invention.This CD-ROM drive 20 comprises CD-ROM drive bulk 21, pallet 22 and winding displacement 23, with above-mentioned according to first embodiment of the invention different be in, this CD-ROM drive 20 more comprises tertiary circuit plate 24c.Tertiary circuit plate 24c is arranged on the pallet 22, and is electrically connected at second circuit board 24b.Wherein, optical read head 29, Spindle Motor 26, step motor 27 and holding tray motor 28 are electrically connected at tertiary circuit plate 24c respectively.
Please be simultaneously with reference to Fig. 5 and Fig. 6 A.Fig. 6 A illustrates the circuit block diagram of CD-ROM drive when pallet is positioned at CD-ROM drive bulk of Fig. 5.When pallet 22 was positioned at CD-ROM drive bulk 21, the first conductive structure 25a was electrically connected at the second conductive structure 25b.This moment, first circuit board 24a controlled signal to second circuit board 24b via winding displacement 23, the first conductive structure 25a that electrically conducts and second conductive structure 25b output first.Second circuit board 24b controls signal to tertiary circuit plate 24c according to first control signal output second.Tertiary circuit plate 24c is according to the running of second control signal control Spindle Motor 26 and step motor 27.After Spindle Motor 26 drives the discs rotation, optical read head 29 projection laser light are to discs, by the laser light of induction light disc reflection, and by step motor 27 mobile optical read heads 29, discs is focused on, locks rail, follows rail, jumps onto the tracks and action such as skip floor.First control signal transmits via winding displacement 23, the first conductive structure 25a that electrically conducts and the second conductive structure 25b.Wherein in the control signal via winding displacement 23 transmission, comprise power supply signal at least.Avoided in the traditional CD-ROM drive control signal because of problem by this via the decay of winding displacement transmission priming signal.
Please be simultaneously with reference to Fig. 5 and Fig. 6 B.The circuit block diagram of the CD-ROM drive that Fig. 6 B illustrates Fig. 5 outside pallet is positioned at CD-ROM drive bulk the time.In the time of outside pallet 22 is positioned at CD-ROM drive bulk 21, the first conductive structure 25a and the second conductive structure 25b are electrical state of isolation.This moment first circuit board 24a only by 23 output this moments of winding displacement required control signal to second circuit board 24b, for example control signal of power supply signal and holding tray motor 28.By reducing the pin number of winding displacement 23, with the cost of reduction winding displacement 23, and then the cost of reduction CD-ROM drive 20.
In the second embodiment of the present invention, first circuit board 24a for example is connecting circuit plate (connector board), this second circuit board 24b for example is motherboard (main board), and this tertiary circuit plate 24c for example is motor control circuit plate (motor board).The first conductive structure 25a and this second conductive structure 25b for example are respectively one of electroconductive elastic sheet and connection gasket.This winding displacement 23 for example is U type winding displacement (U-shape cable) or flexible printed circuit (flexible printedcircuit board).And this winding displacement 23 provides the power delivery path.And the first conductive structure 25a that electrically conducts mutually and the second conductive structure 25b provide a plurality of control signal transmission paths.
The 3rd embodiment
See also Fig. 7, it illustrates the electronic installation synoptic diagram according to third embodiment of the invention.This electronic installation 100 comprises casing 101 and CD-ROM drive, for example is the CD-ROM drive 10 of embodiment one.CD-ROM drive 10 is electrically connected at motherboard 102 with electronic installation 100 via connecting line 103.CD-ROM drive comprises CD-ROM drive bulk 11, pallet 12 and winding displacement 13.A plurality of first conductive structure 15a that CD-ROM drive bulk 11 has first circuit board 14a and is electrically connected at this circuit board 14a.Pallet 12 is arranged on the CD-ROM drive bulk 11 movably, and removable inside and outside CD-ROM drive bulk 11.Pallet 12 also has second circuit board 14b, and a plurality of second conductive structure 15b that are electrically connected at second circuit board 14b.Winding displacement 13 is arranged between CD-ROM drive bulk 11 and the pallet 12, is electrically connected at first circuit board 14a and second circuit board 14b respectively.
When pallet 12 was positioned at CD-ROM drive bulk 11, the first conductive structure 15a was electrically connected at the second conductive structure 15b.At this moment, the motherboard 102 of electronic installation 100 controls signal to first circuit board 14a via connecting line 103 outputs first.First circuit board 14a controls signal to second circuit board 14b according to this first control signal via the first conductive structure 15a that electrically conducts, the second conductive structure 15b and winding displacement 13 outputs second.Second circuit board 14b is according to the Spindle Motor 16 of the second control signal control setting on pallet 12 and the running of step motor 17.Spindle Motor 16 is electrically connected at second circuit board 14b, and in order to drive discs (not illustrating among the figure) rotation.Step motor 17 is electrically connected at second circuit board 14b, in order to mobile optical read head 19.Optical read head 19 is in order to read the data of discs.
In the time of outside pallet 12 is positioned at CD-ROM drive bulk 11, the first conductive structure 15a and the second conductive structure 15b are electrically isolated.At this moment, the motherboard 102 of electronic installation 100 controls signal to first circuit board 14a via connecting line 103 outputs first.First circuit board 14a controls signal to second circuit board 14b according to first control signal via winding displacement 13 outputs second.Second circuit board 14b is according to the running of the holding tray motor 18 of this second control signal control setting on pallet 12.This holding tray motor 18 in order to mobile pallet 12 inside and outside CD-ROM drive bulk 11.In addition, electronic installation 100 for example is computing machine or videocorder.
CD-ROM drive as described above in Example and use its electronic installation, when pallet is positioned at CD-ROM drive bulk, because winding displacement is as the length of the signal transmission path length greater than signal transmission path between a plurality of first conductive structures that electrically conduct and a plurality of second conductive structure.The control signal that first circuit board is exported to second circuit board in the time of can avoiding the CD player running, causes the problem of signal attenuation via winding displacement and first conductive structure that electrically conducts and the transmission of second conductive structure via the winding displacement transmission because of full control signal.And when pallet was positioned at CD-ROM drive bulk outer, winding displacement only need transmit required control signal this moment.Because the signal of the required transmission of winding displacement comprises that at least power supply signal gets final product, thereby can reduce the pin number of winding displacement.With thus, can reduce the substantial width of winding displacement, and reduce the cost of winding displacement, and then reduce the cost of CD-ROM drive.
In sum, though the present invention discloses as above with preferred embodiment, so it is not in order to limit the present invention.The persond having ordinary knowledge in the technical field of the present invention, without departing from the spirit and scope of the present invention, when being used for a variety of modifications and variations.Therefore, protection scope of the present invention is as the criterion when looking accompanying the claim person of defining.
Claims (11)
1. CD-ROM drive comprises:
CD-ROM drive bulk has first circuit board and a plurality of first conductive structure, and wherein said first circuit board and more described first conductive structure electrically connect;
Pallet is arranged on the described CD-ROM drive bulk in a movable manner, and can pass in and out inside and outside the described CD-ROM drive bulk, and described pallet has second circuit board and a plurality of second conductive structure, and described second circuit board and the electric connection of more described second conductive structure; And
Winding displacement, be arranged at described CD-ROM drive bulk and described pallet between, in order to be electrically connected at described first circuit board and described second circuit board respectively;
Wherein, when described pallet is positioned at described CD-ROM drive bulk, described first conductive structure is in order to electrically connecting with described second conductive structure accordingly, described CD-ROM drive utilize described first conductive structure, second conductive structure and the winding displacement of mutual conduction will this moment required signal be transferred between described first circuit board and described second circuit board;
Wherein, in the time of outside described pallet is positioned at described CD-ROM drive bulk, described first conductive structure and described second conductive structure are electrically isolated, described CD-ROM drive utilize described winding displacement will this moment required signal be transferred between described first circuit board and described second circuit board.
2. CD-ROM drive according to claim 1, wherein said first conductive structure is a plurality of electroconductive elastic sheets, described second conductive structure is a plurality of connection gaskets.
3. CD-ROM drive according to claim 1, wherein said second conductive structure is a plurality of electroconductive elastic sheets, described first conductive structure is a plurality of connection gaskets.
4. CD-ROM drive according to claim 1, wherein said winding displacement provides the power delivery path.
5. CD-ROM drive according to claim 1, described first conductive structure and described second conductive structure that wherein electrically conduct mutually provide a plurality of control signal transmission paths.
6. CD-ROM drive according to claim 1, described CD-ROM drive more comprises:
Holding tray motor is arranged on the described pallet, and electrically connects with described second circuit board, in order to described pallet is moved inside and outside described CD-ROM drive bulk;
Optical read head is arranged on the described pallet in a movable manner, and electrically connects with described second circuit board, and described optical read head is in order to read the data of discs;
Spindle Motor is arranged on the described pallet, and electrically connects with described second circuit board, and described Spindle Motor is in order to rotate described discs; And
Step motor is arranged on the described pallet, and electrically connects with described second circuit board, and described step motor is in order to move described optical read head.
7. CD-ROM drive according to claim 6, wherein when described pallet is positioned at described CD-ROM drive bulk, described first circuit board is according to first control signal, described first conductive structure and described second conductive structure that see through mutual conduction are imported described second circuit board with second control signal, and described second circuit board is controlled the running of described Spindle Motor and described step motor according to described second control signal.
8. CD-ROM drive according to claim 1 more comprises:
The tertiary circuit plate is arranged on the described pallet, and electrically connects with described second circuit board;
Holding tray motor is arranged on the described pallet, and electrically connects with described tertiary circuit plate, in order to described pallet is moved inside and outside described CD-ROM drive bulk;
Optical read head is arranged on the described pallet in a movable manner, and electrically connects with described tertiary circuit plate, and described optical read head is in order to read the data of discs;
Spindle Motor is arranged on the described pallet, and electrically connects with described tertiary circuit plate, and described Spindle Motor is in order to rotate described discs; And
Step motor is arranged on the described pallet, and electrically connects with described tertiary circuit plate, and described step motor is in order to move described optical read head.
9. CD-ROM drive according to claim 8, wherein when described pallet is positioned at described CD-ROM drive bulk, described first circuit board sees through described first conductive structure and described second conductive structure of mutual conduction first control signal is imported described second circuit board, described second circuit board is imported described tertiary circuit plate according to described first control signal with second control signal, and described tertiary circuit buttress is controlled the running of described Spindle Motor and described step motor according to described second control signal.
10. electronic installation comprises:
Casing; And
According to each described CD-ROM drive among the claim 1-9.
11. electronic installation according to claim 10, described electronic installation are computing machine or videocorder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100258259A CN101359494A (en) | 2007-08-04 | 2007-08-04 | CD-ROM and electronic device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100258259A CN101359494A (en) | 2007-08-04 | 2007-08-04 | CD-ROM and electronic device thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101359494A true CN101359494A (en) | 2009-02-04 |
Family
ID=40331915
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100258259A Pending CN101359494A (en) | 2007-08-04 | 2007-08-04 | CD-ROM and electronic device thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101359494A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102237109A (en) * | 2010-05-07 | 2011-11-09 | 联发科技股份有限公司 | Optical disc drive |
| CN103325406A (en) * | 2012-03-20 | 2013-09-25 | 广明光电股份有限公司 | Optical drive |
-
2007
- 2007-08-04 CN CNA2007100258259A patent/CN101359494A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102237109A (en) * | 2010-05-07 | 2011-11-09 | 联发科技股份有限公司 | Optical disc drive |
| CN103325406A (en) * | 2012-03-20 | 2013-09-25 | 广明光电股份有限公司 | Optical drive |
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Open date: 20090204 |