CN1167071C - Hand reverse protecting method for CD driver - Google Patents

Abstract

The present invention provides a method for protecting a hand CD returning function of an optical drive, which is applied to a CD machine of which a CD bearing tray is in a CD-feed locking position when the optical drive normally runs. At this time, the state of a CD-feed detection switch is set up for the on state, and a control system is utilized to detect the state of the CD-feed detection switch. After the hand CD returning function is triggered, the state of the CD-feed detection switch is set up for the off state. When the control system detects that the CD-feed detection switch is in the off state, a CD-feed voltage is applied to a tray motor to make the state of the CD-feed detection switch conducted. The CD bearing tray goes back to the CD-feed locking position in order to avoid the damage on the optical drive and the CD due to the fact that a user triggers the hand CD returning function by misoperation when the optical drive runs in high speed, and thereby, the goal of protecting the hand CD returning function is reached.

Description

The guard method of CD-ROM drive hand reverse function

The present invention relates to a kind of guard method of CD-ROM drive, particularly about a kind of user of preventing when CD-ROM drive runs up, because of faulty operation is touched the hand reverse function, and cause the guard method of CD-ROM drive hand reverse function of the damage of CD-ROM drive and discs.

In the prior art as depicted in figs. 1 and 2, CD-ROM drive 1a is when its advance and retreat chip system of design, although the kind of drive that is adopted is different separately, but big city makes it possess hand reverse (manualejection) function, or title emergent rejecting (emergency ejection) function, its objective is and allowing the user when non-transformer or CD-ROM drive 1a fault can't normally be carried out quitting function, still discs 2a can be withdrawed from CD-ROM drive 1a, its method is to utilize additional mechanism design, make and move back the sheet gear train and can remove into sheet locking function with manual mode, and mode of operation generally is by an elongated shape pole 3a, pass the small sircle hole 5a that panel 4a go up to reserve and promote to remove sheet locking function, it is next to take out discs 2a in CD-ROM drive 1a.

But, the hand reverse function is to be in the state that can be activated at any time, run up when reading data at CD-ROM drive 1a, if the user is because of curious or careless for the moment, pole 3a is pushed in the small sircle hole 5a on the panel 4a, just can remove into sheet locking function, make pallet 6a under the situation of discs 2a high speed rotating, withdraw from CD-ROM drive 1a, cause the damage of CD-ROM drive 1a and discs 2a.

So as from the foregoing, above-mentioned known CD-ROM drive hand reverse function on reality is used, obviously has inconvenience and exists with disappearance, and can wait to be improved.

In order to improve above-mentioned every shortcoming, fundamental purpose of the present invention is to detect the into state of sheet detection switch by control system, and applies in good time into that sheet voltage comes disc is done protection.

In order to reach above-mentioned purpose; the invention provides a kind of guard method of CD-ROM drive hand reverse function; the state that at first advances the sheet detection switch is made as conducting (on); detect the into state of sheet detection switch by control system; when the hand reverse function was touched, the state that then advances the sheet detection switch was made as not conducting (Off).Control system applied one to holding tray motor and advanced sheet voltage this moment, made into that the state of sheet detection switch becomes conducting, and then the disc bearing pallet comes back to the into position of sheet locking.

The present invention can prevent that CD-ROM drive is on-stream, and the mistake of hand reverse function activates, and causes the damage of CD-ROM drive and discs.

Below in conjunction with accompanying drawing the present invention is further described:

Fig. 1 is the preceding user mode synoptic diagram of hand reverse of prior art,

Fig. 2 is the user mode synoptic diagram behind the hand reverse of prior art,

Fig. 3 is the advance and retreat stereographic map of sheet gear train of the present invention,

Fig. 4 protection process flow diagram that manual function is touched during for operating of optical drive of the present invention.

The drawing reference numeral explanation:

1a CD-ROM drive 2a discs 3a pole 4a panel

5a small sircle hole 6a pallet 1 holding tray motor 2 gears

3 tooth bars 4 advance sheet detection switch 5 control system

The invention will be further described below in conjunction with accompanying drawing 2-4:

See also Fig. 3; the present invention is a kind of guard method of CD-ROM drive hand reverse function; the advance and retreat sheet acts may of CD-ROM drive is utilized holding tray motor 1 to drive the advance and retreat sheet gear train of being made up of gear 2 and tooth bar 3 and is finished; it enters the sheet position confirms by advancing sheet detection switch 4, and this advances the state of sheet detection switch 4 and provides voltage to give this holding tray motor 1 in good time by control system 5 detectings.

As shown in Figure 4; when CD-ROM drive is running well; its disc bearing pallet is to be in the into position of sheet locking; advance the sheet detection switch and should be in conduction position 20 this moment; therefore can utilize into the sheet detection switch as the foundation of judging; if when operating of optical drive; the hand reverse function takes place is touched; promptly advance the situation that sheet locking device is removed; then advance sheet detection switch state and can be transformed into not conducting 21 by conducting; if control system detects when into sheet detection switch state is transformed into not conducting by conducting; then holding tray motor is applied one and advance sheet voltage 22; advance sheet detection switch state can be transformed into conducting by not conducting again this moment, makes the disc bearing pallet come back to the position 23 of locking, so; just can avoid the user when CD-ROM drive runs up; touch the hand reverse function because of faulty operation, cause the damage of CD-ROM drive and discs, reach the target of hand reverse function and protecting.

But the above only is the detailed description and the icon of one of best specific embodiment of the present invention, and appended icon only provides reference and explanation usefulness, is not to be used for the present invention is limited.All closing in the embodiment of the spirit variation similar with it of the present patent application claim all should be contained in the category of the present invention.

Claims (2)

1, a kind of guard method of CD-ROM drive hand reverse function is characterized in that: when it was applied to run well, the bearing tray of disc was in the into CD player of the position of sheet locking, comprises the following steps:

(a) control system is detected the into state of sheet detection switch, and this moment, state was conducting;

When (b) the hand reverse function was touched, the state that then advances the sheet detection switch was made as not conducting;

(c) control system detects into that the state of sheet detection switch is not conducting, then holding tray motor is applied one and advances sheet voltage, makes into that the state of sheet detection switch becomes conducting, and then the disc bearing pallet comes back to the into position of sheet locking.

2, the guard method of CD-ROM drive hand reverse function as claimed in claim 1 is characterized in that: wherein the hand reverse mode of step (b) is to utilize an elongated shape pole, passes the small sircle hole of reserving on the panel and removes into sheet locking.

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