CN100373491C - Optical drive and method for controlling operation of optical drive - Google Patents

Abstract

An optical disc drive comprises a first chassis, and a first rotating element, a first translating element, a second rotating element, a first driving element and a first sensing element which are arranged on the first chassis. When a CD is pushed into the CD driver, the first lug on the first translation element and the second lug on the second translation element can position the CD between them. The optical disk is pressed against the first bump and the second bump, and the first translation element and the second translation element can synchronously move back in opposite directions. When the first translation element touches the first sensing element, the first driving element drives the second rotating element to rotate so as to feed the optical disk into the optical drive.

Description

Optical drive and method for controlling operation of optical drive

technical field

The invention relates to an optical drive, in particular to a suction type optical drive.

Background technique

In today's information explosion, most multimedia products are distributed in the form of CDs. Due to the popularity of consumer CDs, almost every computer includes a CD drive. It can be seen that the optical drive plays a pivotal role in multimedia.

The optical drives on the market today can be roughly divided into two types: tray type optical drive and slot-in optical drive according to the way the optical disc is fed into the optical drive. These two different optical drives are used in different occasions according to the needs of use.

At present, the traditional slot-in optical drive can be divided into two categories in terms of the positioning method of the optical disc: the first type is the rear positioning type optical drive, and the second type is the front positioning type optical drive.

The rear positioning optical drive usually uses a set of connecting rods arranged on the top of the optical drive to position the optical disc. And this kind of CD-ROM drive that uses the connecting rod to position the CD is generally only suitable for the inhalation and positioning of a single CD.

The other type of front positioning optical drive can be used for the suction and positioning of multiple optical discs, but its mechanism is more complicated, the assembly is relatively difficult, and there are quite unsatisfactory places in terms of reliability and anti-displacement (stall) function. .

The above-mentioned traditional front-positioned slot-in optical drive has the following problems in actual use:

(1) During the feeding process of the optical disc into the traditional slot-in optical drive (hereinafter referred to as the optical drive), the optical drive cannot keep the optical disc at the center of the optical drive throughout the process. In this way, the positioning of the optical disc in the optical drive will have a certain degree of error, making the optical drive very prone to jamming.

(2) The traditional optical drive cannot prevent the user from pushing the optical disc into the optical drive in an abnormal way of use, resulting in failure of the optical drive.

(3) If the traditional optical drive needs to judge the size of the inserted optical disc, an additional set of photosensitive elements is required to determine the size of the disc, resulting in an increase in production cost.

Contents of the invention

In view of this, the object of the present invention is to provide an optical drive, which can keep the optical disc at the center of the optical drive during the process of: (1) feeding the optical disc into the optical drive. (2) The optical drive can prevent the user from pushing the optical disc into the optical drive in an abnormal way of use. (3) The optical drive can effectively determine the size of the inserted optical disc.

According to the above purpose, the present invention provides an optical drive. The optical drive at least includes: a first base frame; a first rotating element, arranged on the first base frame; a first translation element, coupled with the first rotation element, and the first translation element has a first protrusion; A second translation element, coupled with the first rotation element and opposite to the first translation element, the second translation element has a second protrusion, the first translation element and the second translation element can be synchronized through the first rotation element And reversely linked; a second rotating element, arranged on the first base frame; a first driving element, coupled with the second rotating element; a first sensing element, arranged on the first base frame and It is electrically connected with the first driving element; and a second sensing element is arranged on the first chassis and electrically connected with the first driving element; wherein, when a disc is pushed into the optical drive, the first bump and the second The two bumps can position the optical disc therebetween, and the optical disc is pressed against the first bump and the second bump, and the first translation element and the second translation element can retreat synchronously in opposite directions; when the first translation element touches the second When a sensing element is used, the first driving element drives the second rotating element to rotate to feed the optical disk into the optical drive; when the first translation element moves toward the side of the first chassis and does not touch the second sensing element At this time, the first driving element reversely drives the second rotating element to rotate, and feeds the optical disc out of the optical drive.

The above-mentioned optical drive of the present invention may further include: a second sensing element configured on the first chassis and electrically connected to the first drive element; wherein, when the first translation element moves toward one side of the first chassis and touches When not reaching the second sensing element, the first driving element reversely drives the second rotating element to rotate to feed the optical disc out of the optical drive.

In addition, the above-mentioned optical drive of the present invention may further include: a second chassis arranged on the first chassis; a second driving element arranged on the second chassis; a second sensing element arranged on the first chassis. on the chassis and electrically connected with the second driving element; a first positioning block, coupled with the second driving element, and the second driving element can drive the first positioning block to move; a second positioning block has an inclined surface and a A bump, the second positioning block abuts against the first positioning block with an inclined surface; a gate element has a guide groove, and the second positioning block is docked with the guide groove of the gate element through the bump; a top plate is arranged on the second bottom and, a third sensing element, configured on the top plate and electrically connected to the second driving element; wherein, when the optical disc is fed into the optical drive by the second rotating element, the first translation element touches the second sensing element, Make the second driving element drive the first positioning block to move until the first positioning block touches the third sensing element, so that the second driving element stops driving the first positioning block to move; and when the first positioning block moves, the first positioning block It is to push the slope of the second positioning block, so that the convex point of the second positioning block passes through the guide rail to lower the brake element.

Wherein, the first positioning block moves and blocks against the first translation element and the second translation element, so that the optical disc can be positioned in the optical drive by the first protrusion and the second protrusion. The above-mentioned optical drive may also include a fourth sensing element, which is arranged on the top plate and electrically connected with the first driving element; wherein, the first positioning block moves to touch the fourth sensing element, so that the first driving element stops driving the first driving element. transmission element group.

According to the above object, the present invention proposes a method for controlling the operation of an optical drive, including: (a) pushing an optical disc into an optical drive, so that a first protrusion of a first translation element and a first protrusion of a second translation element The two projections can position the optical disk between them, and the optical disk is pressed against the first projection and the second projection. The first translation element and the second translation element are stretched apart by a first rotating element, and can face in opposite directions. Retreat synchronously, and the first translation element touches a first sensing element; (b) the first sensing element makes a first driving element drive a second rotating element to rotate, so that the disc is fed into the optical drive; (c) When the optical disk is fed into the optical drive as the second rotating element, the first translation element is stretched by the optical disk, so that the first translation element moves toward the side of the optical drive to touch a second sensing element; (d) if the first translation element If the second sensing element cannot be touched, the first translation element and the second translation element return to their original positions, and the first translation element touches the first sensing element; (e) the first sensing element makes the first driving element react To drive the second rotating element to rotate to feed the optical disk out of the optical drive, and when the optical disk is fed out of the optical drive by the second rotating element, the first translation element and the second translation element are stretched apart again, and the first translation element moves toward the optical drive. One side retreats and touches the first sensing element; (f) the optical disc is completely fed out of the optical drive by the second rotating element, so that the first translation element returns to its original position and touches the first sensing element; and, (g) A sensing element makes the first driving element stop driving the second rotating element.

Moreover, the above-mentioned method for controlling the operation of an optical drive, before step (d), may further include: (h) if the first translation element touches the second sensing element, the second sensing element causes the first driving element to continue driving The second rotating element feeds the optical disc into the optical drive, then the first translation element returns to the original position, and the first translation element touches the second sensing element again; (i) the second sensing element drives a second driving element A first positioning block moves until the first positioning block touches a third sensing element; (j) the third sensing element causes the second drive element to stop driving the first positioning block, thereby causing the first positioning block to stop moving, and the second A protruding point of a positioning block passes through a guide rail on a second positioning block, so that a gate element is lowered; (k) the optical disc is completely fed into the optical drive by the second rotating element, and the first translation element and the second translation element The element returns to its original position, and the first translation element touches the first sensing element; (1) the first sensing element makes the first drive element stop driving the second rotating element, and then the first sensing element makes the first drive again The element reversely drives the second rotating element; (m) the first translation element and the second translation element stretch the disc, and the first translation element retreats toward the side of the optical drive again and touches the first sensing element, the first sensing element (n) the first sensing element and make the second driving element drive the first positioning block to move until the first positioning block drives a fourth sensing element; and, (o) The first positioning block pushes against a guide frame and rises, and the guide frame lifts the second rotating element, so that the second rotating element is separated from the optical disk, and then the fourth sensing element stops the rotation of the second driving element, and the first positioning The block clamps against the first translation element and the second translation element, so that the first protrusion and the second protrusion position the optical disc in the optical drive.

Description of drawings

FIG. 1 is an exploded view of an optical drive according to a preferred embodiment of the present invention;

Fig. 2 is the assembly diagram of the optical drive of the preferred embodiment of the present invention;

3 is a schematic diagram of the optical drive of the present invention and the optical disc before being inserted into the optical drive;

4 is a schematic diagram of the optical drive abutting against the first bump and the second bump;

Fig. 5 is a schematic diagram of the second rotating element feeding the optical disc into the optical drive;

Fig. 6 is a schematic diagram of the first positioning block driving the gate element down;

Fig. 7 is a schematic diagram of positioning the optical disc in the optical drive by the first bump and the second bump;

FIG. 8 is a flow chart of the method for controlling the operation of the optical drive of the present invention.

Detailed ways

Please refer to FIG. 1 , which shows an exploded view of an optical drive according to a preferred embodiment of the present invention. The optical drive 100 of the present invention includes a first bottom frame 102 , a second bottom frame 104 and a top plate 106 for arranging various components.

The first rotating element 108 , such as a gear, is disposed on the first chassis 102 . The first translation element 110 and the second translation element 112 , such as racks, are respectively coupled to the first driving element 108 .

The first translation element 110 and the second translation element 112 respectively have a first protrusion 114 and a second protrusion 116 . The first translation element 110 and the second translation element 112 are opposite to each other, and the first translation element 110 and the second translation element 112 can move synchronously and oppositely through the first rotation element 108 .

The second rotating element 118 such as a roller is disposed on the first chassis 102 . A first driving element (not shown in the figure), such as a motor, is coupled to the second rotating element 118 . The first sensing element 120 is disposed on the first chassis 102 , and the first sensing element 120 is electrically connected to the first driving element.

The above-mentioned optical drive 100 of the present invention may further include a first transmission element group 122 , and the first transmission element group 122 is respectively coupled to the first driving element and the second rotating element 118 . The first driving element can drive the second rotating element 118 through the first transmission element group 122 .

The first transmission element set 122 may be a gear set shared by several gears. In addition, the second sensing element 124 is disposed on a side of the first chassis close to the first sensing element 120 , and the second sensing element 124 is electrically connected to the first driving element.

The second chassis 104 is disposed on the first chassis 102 . For example, the second driving element 126 , which may be a motor, is disposed on the second chassis 104 . The second sensing element 124 is disposed on the first chassis 102 , and the second sensing element 124 is electrically connected to the second driving element 126 .

The first positioning block 128 is coupled with the second driving element 126 , and the second driving element 126 can drive the first positioning block 128 to move. The second positioning block 130 has a slope 132 and a protruding point 134 , and the second positioning block 130 abuts against the first positioning block 128 with the slope 132 .

The gate element 136 has a guide groove 138 . The second positioning block 130 abuts with the guide groove 138 of the gate element 136 through the protrusion 134 . The top board 106 is disposed above the second chassis 104 . The third sensing element 140 is disposed on the top board 106 , and the third sensing element 140 is electrically connected to the second driving element 126 .

The second translation element 112 is connected to the second chassis 104 by the first elastic element 142 . The first elastic element 142 can make the second translation element 112 make the first translation element 110 have a tendency to move toward the first sensing element 120 . The second elastic element 144 is disposed between the gate element 136 and the top plate 106 , and the second elastic element 144 can make the gate element 136 have a tendency to move toward the first chassis 102 . The third elastic element 146 is used to connect the second positioning block 130 and the second chassis 104 so that the second positioning block 130 has a tendency to move toward the first positioning block 128 .

The above-mentioned optical drive 100 of the present invention may also have a second transmission element set 148 such as a gear set. The second transmission element group 148 is respectively coupled to the second driving element 126 and the first positioning block 128 . The second driving element 126 can drive the first positioning block 128 through the second transmission element group 148 . The fourth sensing element 152 is disposed on the top board 106 and electrically connected to the first driving element.

Please refer to FIG. 2 , which shows an assembly diagram of an optical drive according to a preferred embodiment of the present invention. FIG. 1 shows the components respectively disposed on the first bottom frame 102 , the second bottom frame 104 and the top plate 106 , and the coupling between the components. After combining the first chassis 102 , the second chassis 104 and the top plate 106 equipped with various components, the combined optical drive 100 as shown in FIG. 2 is formed.

In order to clearly illustrate the operation principle of the optical drive 100 , in the following figures of the optical drive 100 , the top plate 106 is omitted and not shown. Please refer to FIG. 3 , which shows a schematic view of the optical drive of the present invention and the optical disc before being inserted into the optical drive. The top board is omitted, and only the third sensing element 140 and the fourth sensing element 152 disposed on the top board are shown. The optical disc 154 is pushed into the optical drive 100 in the direction of the arrow as shown in the drawing.

Please refer to FIG. 4 , which shows a schematic diagram of the optical drive abutting against the first bump 114 and the second bump 116 . When pushing the optical disc 154 into the optical drive 100, the first protrusion 114 and the second protrusion 116 (located below the second translation element 112, see FIG. The first protrusion 114 and the second protrusion 116 , the first translating element 110 and the second translating element 112 can retreat in opposite directions synchronously.

And when the first translating element 110 touches the first sensing element 120 , the first driving element (not shown in the figure) drives the second rotating element 118 to rotate to feed the optical disc 154 into the optical drive 100 .

The optical drive 100 of the present invention has the function of judging the size of the optical disc 154 . For example, if the optical drive 100 of the present invention is used to access an optical disc with a diameter of 12 cm instead of an optical disc with a diameter of 8 cm. Then when the optical disk 154 inserted into the optical drive 100 is an optical disk with a diameter of 8 cm, when the first translation element 110 moves toward one side of the first chassis 102, the first translation element 110 cannot touch the second sensing element. 124. In addition, the first driving element reversely drives the second rotating element 118 to rotate, so as to feed the optical disc 154 out of the optical drive 100 .

And if the optical disc 154 is an optical disc with a diameter of 12 centimeters (when the optical disc 154 is a size acceptable to the optical drive 100), the diameter of the optical disc 154 is relatively large. The optical disk 154 can spread the first translation element 110 so that the first translation element 110 touches the second sensing element 124 , so that the first driving element continues to feed the optical disk 154 into the optical drive 100 . As shown in FIG. 5 , the second rotating element feeds the optical disc into the optical drive. When the optical disk 154 is fed into the optical drive 100 by the second rotating element 118 , the first translation element 110 touches the second sensing element 124 .

Please refer to FIG. 6 , which shows a schematic diagram of the gate element 136 being driven down by the first positioning block 128 . Because the first translation element 110 touches the second sensing element 124, the second sensing element 124 makes the second driving element 126 drive the first positioning block 128 to move until the first positioning block 128 touches the third sensing element 140, so that The second driving element 126 stops driving the first positioning block 128 to move. When the first positioning block 128 moves, the first positioning block 128 pushes against the slope 132 of the second positioning block 130 , so that the protrusion 134 of the second positioning block 130 passes through the guide rail 138 to lower the gate element 136 .

Please refer to FIG. 7 , which shows a schematic diagram of the first bump 114 and the second bump 116 being positioned by the optical disc in the optical drive. At the same time, the first positioning block 128 moves and is locked against the first translation element 110 and the second translation element 112, so that the optical disc 154 can be moved by the first protrusion 114 and the second protrusion 116 (located below the second translation element 112). , see FIG. 1) is located in the optical drive 100. And the first positioning block 128 moves to drive the fourth sensing element 152 , so that the first driving element stops driving the first transmission element group 122 .

The above is to illustrate the optical drive 100 of the present invention with its structure and device. A method for controlling the operation of the optical drive is proposed below. The method for controlling the operation of the optical drive is used to assist in explaining the structure and operating principle of the optical drive 100 of the present invention in addition to the method for controlling the optical drive itself. Please refer to FIG. 1 , FIG. 3 to FIG. 7 and FIG. 8 at the same time. FIG. 8 is a flow chart of the method for controlling the operation of the optical drive of the present invention.

First, in step 800, start to control the operation of the optical drive 100 . Next, in step 802, push the optical disk 154 into the optical drive 100, so that the first protrusion 114 of the first translation element 110 and the second protrusion 116 of the second translation element 112 can position the optical disk 154 therebetween, and the optical disk 154 against the first protrusion 114 and the second protrusion 116, the first translation element 110 and the second translation element 112 are stretched by the first rotation element 108, and can be retracted synchronously in opposite directions, and the first The translation element 110 touches the first sensing element 120 .

Then, in step 804 , the first sensing element 120 causes the first driving element to drive the second rotating element 118 (such as a roller) to rotate, so as to feed the optical disc 154 into the optical drive 100 . Afterwards, in step 806, when the optical disc 154 is fed into the optical drive 100 by the second rotating element 118, the first translating optical element 110 is stretched by the optical disc 154, so that the first translating element 110 moves toward the side of the optical drive 154 to touch The second sensing element 124 (judging whether the size of the optical disk meets the requirements by whether the first translation element 110 touches the second sensing element 124 ).

Next, in step 808, if the first translation element 110 cannot touch the second sensing element 124, for example, if the optical disk 154 is pushed in with a diameter of 8 cm, the optical disk 154 will not be able to stretch the first translation element 110 to Touch the second sensing element 124 . The first translation element 110 and the second translation element 112 return to their original positions, and the first translation element 110 touches the first sensing element 120 .

Then, in step 810 , the first sensing element 120 makes the first driving element 110 reversely drive the second rotating element 118 to rotate, so as to feed the optical disc 154 out of the optical drive 100 . When the optical disk 154 is fed out of the optical drive 100 by the second rotating element 118, the first translation element 110 and the second translation element 112 are stretched apart again, and the first translation element 110 retreats toward the side of the optical drive 100 and touches the first translation element 110. sensing element 120 .

Afterwards, in step 812 , the optical disk 154 is completely fed out of the optical drive 100 by the second rotating element 118 , so that the first translation element 110 returns to its original position and touches the first sensing element 120 . Next, in step 814 , the first sensing element 120 causes the first driving element to stop driving the second rotating element 118 . Finally, in step 816, the control of the operation of the optical drive 100 ends.

The above-mentioned operation method of controlling the optical drive 100 is that the optical disc that is not suitable for the optical drive 100, such as an optical disc with a diameter of 8 cm, can be fed into the optical drive 100 and after the judgment of the optical drive 100, use the second rotating element 118 to access this discrepancy. The size of the disc output. Therefore, the optical drive 100 of the present invention has the function of judging the size of the inserted optical disc, and feeding out the optical disc whose size is not suitable for access.

Next, in step 818, if the first translating element 110 touches the second sensing element 124, for example, if the optical disc 154 is an optical disc with a diameter of 12 cm, the optical disc 154 can completely stretch the first translating element 110 so that the first When the translation element 110 touches the second sensing element 124 , the second sensing element 124 makes the first driving element continue to drive the second rotating element 118 to feed the optical disc 154 into the optical drive 100 . The first translation element 110 returns to the original position, and the first translation element 110 touches the second sensing element 124 again.

Then, in step 820 , the second sensing element 124 makes the second driving element 126 drive the first positioning block 128 to move until the first positioning block 128 touches the third sensing element 140 . Afterwards, in step 822, the third sensing element 140 makes the second driving element 126 stop driving the first positioning block 128, thereby making the first positioning block 128 stop moving. The guide rail 138 on the two positioning blocks 136, so that the gate element 136 descends.

Next, in step 824, the optical disc 154 is completely fed into the optical drive 100 by the second rotating element 118, the first translation element 110 and the second translation element 112 return to their original positions, and the first translation element 110 touches the first sensing element 120. Then, in step 826 , the first sensing element 120 makes the first driving element stop driving the second rotating element 118 , and the first sensing element 120 makes the first driving element reversely drive the second rotating element 118 .

Afterwards, in step 828, the first translation element 110 and the second translation element 112 stretch the optical disc 154, and the first translation element 110 retreats toward the side of the optical drive 100 again and touches the first sensing element 120, the first The sensing element 120 makes the first driving element stop driving the second rotating element 118 . Next, in step 830 , the first sensing element 120 and the second driving element 126 drive the first positioning block 128 to move until the first positioning block 128 touches the fourth sensing element 152 .

Then, in step 832 , the first positioning block 128 is raised against the guide frame 156 . The guide frame 156 lifts the second rotating element 118 so that the second rotating element 118 is detached from the optical disc 154 . The fourth sensing element 152 stops the rotation of the second driving element 126, and the first positioning block 128 is locked against the first translation element 110 and the second translation element 112, so that the first protrusion 114 and the second protrusion 116 position the optical disc 154 in the optical drive 100. Finally, in step 816, the control of the operation of the optical drive 100 ends.

Therefore, the advantages of the optical drive 100 disclosed in the above embodiments of the present invention are as follows:

(1) During the process in which the optical disc is fed by the optical drive of the present invention, the optical drive can keep the optical disc at the center of the optical drive throughout the whole process. In this way, the positioning of the optical disc in the optical drive will be more precise, so that the optical drive will not produce the phenomenon of jamming.

(2) The optical drive of the present invention can effectively prevent the user from pushing the optical disc into the optical drive in an abnormal way of use, resulting in failure of the optical drive.

(3) The optical drive of the present invention can effectively determine the size of the inserted optical disc, that is, when the size of the inserted optical disc cannot fit the size of the optical disc that can be accessed by the optical drive, the optical drive can use the unsuitable optical disc feed out and continue to operate.

In summary, although the present invention has been disclosed in conjunction with the above embodiments, it is not intended to limit the present invention. Any skilled person can make various modifications and modifications without departing from the spirit and scope of the present invention. , so the protection scope of the present invention should be defined by the claims.

Claims (13)

1. CD-ROM drive comprises:

One first underframe;

One first rotating element is arranged on this first underframe;

One first shift element couples with this first rotating element, and this first shift element has one first projection;

One second shift element couples with this first rotating element and opposite each other with this first shift element, and this second shift element has one second projection, and this first shift element and this second shift element are by this first rotating element interlock synchronously and oppositely;

One second rotating element is arranged on this first underframe;

One first driving element couples with this second rotating element;

One first sensing element is disposed on this first underframe and with this first driving element and is electrically connected; And

One second sensing element is disposed on this first underframe and with this first driving element and is electrically connected; Wherein, when pushing a CD and entering this CD-ROM drive, this first projection and this second projection are that this CD is positioned therebetween, and with this first projection of this CD contact and this second projection, this first shift element and this second shift element are to back out synchronously in the opposite direction;

When this first shift element was touched this first sensing element, this first driving element was to drive this second rotating element to rotate, with this this CD-ROM drive of CD feed-in;

When this first shift element towards a side shifting of this first underframe and when touching less than this second sensing element, this first driving element is that reverse drive second rotating element rotates, and this CD is fed out this CD-ROM drive.

2. CD-ROM drive as claimed in claim 1, wherein, this first rotating element is a gear, this first shift element and this second shift element are tooth bars.

3. CD-ROM drive as claimed in claim 1, wherein, this second rotating element is a roller.

4. CD-ROM drive as claimed in claim 1, wherein, this CD-ROM drive also comprises one first actuated element group, and this first actuated element group is to couple with this first driving element and this second rotating element respectively, and this first driving element is to drive this second rotating element by this first actuated element group.

5. CD-ROM drive as claimed in claim 4, wherein, this first actuated element group is a gear set.

6. CD-ROM drive as claimed in claim 1, wherein, this first driving element is a motor.

7. CD-ROM drive as claimed in claim 1, wherein, this CD-ROM drive also comprises:

One second underframe is arranged on this first underframe;

One second driving element, it is a motor, is arranged on this second underframe, wherein this second sensing element is electrically connected with this second driving element;

One first locating piece couples with this second driving element, and this second driving element is can drive this first locating piece to move;

One second locating piece has an inclined-plane and a salient point, and this second locating piece is to be abutted against this first locating piece with the inclined-plane;

One lock element has a guide groove, and this second locating piece is to dock with this guide groove of this lock element by this salient point;

One top board is arranged at this second underframe top; And

One the 3rd sensing element is disposed on this top board and with this second driving element and is electrically connected;

Wherein, when this CD during by this this CD-ROM drive of second rotating element feed-in, this first shift element is to touch this second sensing element, making this second driving element drive this first locating piece moves, touch the 3rd sensing element until this first locating piece, make this second driving element stop to drive this first locating piece and move;

And when this first locating piece moved, this first locating piece was this inclined-plane of this second locating piece of ejection, made this salient point of this second locating piece make this lock element descend by this guide rail.

8. CD-ROM drive as claimed in claim 7, wherein, this CD-ROM drive also comprises one first flexible member, and this first flexible member is in order to connect this second shift element and this second underframe, to make this second shift element make this first shift element have the trend that moves towards this first sensing element.

9. CD-ROM drive as claimed in claim 7, wherein, this CD-ROM drive also comprises one second flexible member, this second flexible member is to be disposed between this lock element and this top board, makes this lock element have the trend that moves towards this first underframe.

10. CD-ROM drive as claimed in claim 7, wherein, this CD-ROM drive also comprises one the 3rd flexible member, the 3rd flexible member is in order to connect this second locating piece and this second underframe, to make this second locating piece have the trend that moves to this first locating piece.

11. CD-ROM drive as claimed in claim 7, wherein, this CD-ROM drive also comprises one second actuated element group, it is a gear set, this second actuated element group is to couple with this second driving element and this first locating piece respectively, and this second driving element is to drive this first locating piece by this second actuated element group.

12. CD-ROM drive as claimed in claim 7, wherein, this CD-ROM drive also comprises:

One the 4th sensing element is disposed on this top board and with this first driving element and is electrically connected;

Wherein, this first locating piece moves, and fastens this first shift element and this second shift element, and this CD can be positioned in this CD-ROM drive by this first projection and this second projection;

Touch the 4th sensing element when this first locating piece moves to, make this first driving element stop to drive this first actuated element group.

13. a method of controlling operating of optical drive comprises:

(a) push a CD and enter a CD-ROM drive, one first projection of one first shift element and one second projection of one second shift element can be positioned this CD therebetween, with this first projection of this CD contact and this second projection, this first shift element and this second shift element are strutted by one first rotating element, and can back out synchronously in the opposite direction, and this first shift element is to touch one first sensing element;

(b) this first sensing element makes one first driving element drive one second rotating element rotating, with this this CD-ROM drive of CD feed-in;

When (c) this CD was this this CD-ROM drive of second rotating element feed-in, this first shift element was strutted by this CD, made the side shifting of this first shift element towards this CD-ROM drive, to touch one second sensing element;

(d) if this first shift element is touched less than this second sensing element, this first shift element and this second shift element are to be back to the origin-location, and this first shift element is also touched this first sensing element;

(e) this first sensing element makes this second rotating element of this first driving element reverse drive rotate, so that this CD is fed out this CD-ROM drive, and when this CD is fed out this CD-ROM drive by this second rotating element, this first shift element and this second shift element are strutted once more, and this first shift element is also backed out and touched this first sensing element towards a side of this CD-ROM drive;

(f) this CD is fed out this CD-ROM drive fully by this second rotating element, makes this first shift element be back to the origin-location, and touches this first sensing element; And

(g) this first sensing element makes this first driving element stop to drive this second rotating element;

Wherein, this method also comprises in this step (d) before:

(h) if this first shift element is touched this second sensing element, this second sensing element makes this first driving element continue to drive this second rotating element with in this this CD-ROM drive of CD feed-in, then, this first shift element is returned towards the origin-location, and this first shift element is also touched this second sensing element once more;

(i) this second sensing element makes one second driving element drive one first locating piece moving, touch one the 3rd sensing element until this first locating piece;

(j) the 3rd sensing element makes this second driving element stop to drive this first locating piece, and then makes this first locating piece stop to move, and a salient point of this first locating piece is by being positioned at the guide rail on this one second locating piece, descending to make a lock element;

(k) this CD is entirely in this this CD-ROM drive of second rotating element feed-in, and this first shift element and this second shift element return back to the origin-location, and this first shift element is also touched this first sensing element;

(l) this first sensing element makes this first driving element stop to drive this second rotating element, and then, this first sensing element makes this this second rotating element of first driving element reverse drive again;

(m) this first shift element and this second shift element strut for this CD, and this first shift element backs out and touch this first sensing element towards a side of this CD-ROM drive once more, and this first sensing element makes this first driving element stop to drive this second rotating element;

(n) this first sensing element and make this second driving element drive this first locating piece moving, touch one the 4th sensing element until this first locating piece; And

(o) this first locating piece contact, one saddle raises, this second rotating element of this saddle and lifting, make this second rotating element break away from this CD, then, the 4th sensing element makes this second driving element stop operating, this first locating piece fastens this first shift element and this second shift element, and this first projection and this second projection are positioned this CD in this CD-ROM drive.

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