CN1284168C - Method for changing disc reading speed - Google Patents
Method for changing disc reading speed Download PDFInfo
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- CN1284168C CN1284168C CN 03153940 CN03153940A CN1284168C CN 1284168 C CN1284168 C CN 1284168C CN 03153940 CN03153940 CN 03153940 CN 03153940 A CN03153940 A CN 03153940A CN 1284168 C CN1284168 C CN 1284168C
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- input interface
- reading speed
- rom drive
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Abstract
The present invention discloses a method for changing optical disk reading speed, which is applied to an optical drive and is used for changing the optical disk reading speed. The present invention is characterized in that an RC circuit is coupled between a first input interface of a control circuit driving an optical drive motor to change the rotary speed and any key of the optical drive. After the key is pressed, the electrical potential of the first input interface is changed by conducting the RC circuit, and furthermore, the rotating speed of the optical drive motor is driven to be changed.
Description
Technical field
The present invention relates to a kind of method that changes the CD reading speed, relate in particular to a kind of utilization and push an existing button on the CD-ROM drive panel, to reach the method that changes the CD reading speed.
Background technology
At present CD can be described as in numerous information storage modes, a kind of not only economy but also Storage Media easily.In order to the Storage Media that stores data, develop into present DVD-ROM from traditional CD-ROM, CD-ROM drive has become one of most important standard outfit in individual now and the business computer.
Future, flourish along with network and multimedia industry, computing machine is popularized rapidly to add and is used convenience and the economy that CD brought at a middle or low price, has more enlarged the market scale of CD-ROM drive industry.From trend analysis, current being in when the CD series of products and the alternation of generations of DVD series of products, global CD-ROM drive industry still is stabilized growth, and following DVD series of products will slowly become the market mainstream.
Can find that from the evolution of CD-ROM CD-ROM drive is under the competition of multiple, the reading speed of pursuing higher multiple is undoubtedly the target that all manufacturers make great efforts.Yet, when CD-ROM drive operates, if be in high-revolving state always, CD can be subjected to action of centrifugal force, and make the structure of whole CD-ROM drive produce vibrations, unsettled phenomenon, and then have influence on the correctness that read/write head in the CD-ROM drive reads data, even the situation of read error takes place, and can produce very big noise.
For solve the problem of being brought when CD-ROM drive remains on the high speed rotating running always, at United States Patent (USP) 6,512, the method of disclosed control CD speed in 725, be that speed setting with CD-ROM drive is two patterns, a pattern is a low speed rotation, and another pattern is a high speed rotating.
When user's desire is adjusted into high speed rotating with the rotating speed of CD-ROM drive by low speed rotation, need the timer of CD-ROM drive to be made zero, and pick up counting by pushing eject key (Eject key) continuously, when the timer timing surpassed for 5 seconds, the motor that just drives in the CD-ROM drive is adjusted its rotating speed to rotation at a high speed.Therefore, the user can be according to its different demand, and adjusts the reading speed of CD-ROM drive, the electric power of required consumption and the noise of generation when reducing the CD-ROM drive running.
Yet the method for this change CD reading speed needs the extra one group of timer that uses in the use, just can carry out the switching of CD-ROM drive reading speed.
And be in the U. S. application case of US2003/0007429A1 at publication number, be by pushing any two operating keys on the CD-ROM drive panel (play, suspend, advance fast, retreat fast etc.) simultaneously, to reach the purpose of rotation speed change.Yet, when only being pressed into an operating key, can carrying out its corresponding function of operating key that is pressed into, and can't reach the purpose of rotation speed change if the user is not pressed into two operating keys really simultaneously when operation, cause the inconvenience in the use.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of method that changes the CD reading speed, by pushing arbitrary button on the CD-ROM drive panel, can change the CD-ROM drive reading speed, and easy to use, cost is low.
To achieve these goals, the invention provides a kind of method that changes the CD reading speed, be applied to a CD-ROM drive, and in order to change the reading speed of CD, its characteristics are: driving the RC circuit that is coupled between arbitrary button of one first input interface and described CD-ROM drive of a control circuit that a CD-ROM drive motor changes rotating speed, after pushing described button, by the conducting of described RC circuit, change the current potential of described first input interface, and then drive described CD-ROM drive motor change speed.
The method of above-mentioned change CD reading speed, its characteristics are: described button is coupled in one second input interface of described control circuit.
The method of above-mentioned change CD reading speed, its characteristics are: described first input interface be coupled electric capacity and a resistance, the other end ground connection of described electric capacity, and the other end of described resistance is coupled in described second input interface.
The method of above-mentioned change CD reading speed, its characteristics are: described first input interface is coupled in the input interface of another button of described CD-ROM drive panel, and described button is coupled in one second input interface of described control circuit.
The method of above-mentioned change CD reading speed, its characteristics are: described first input interface also is coupled in the p type side of a diode, and the n type side of described diode connects electric capacity and a resistance, the opposite side ground connection of described electric capacity, and the opposite side of described resistance is connected to described second input interface.
The method of above-mentioned change CD reading speed, its characteristics are: described button is selected from the play button, Pause key of a CD-ROM drive panel, advance key, any one in the combination of back spacer and eject key fast fast.
The present invention also provides a kind of method that changes the CD reading speed, be applied to a CD-ROM drive, and in order to change the reading speed of CD, its characteristics are: driving the RC circuit that is coupled between arbitrary button of one first input interface and described CD-ROM drive of a control circuit that a CD-ROM drive motor changes rotating speed, by controlling the current potential of described first input interface of described key change, to carry out the adjustment of reading speed, it comprises the following step:
(a) continue to push described button;
(b), the current potential of described first input interface is reduced by the discharge of described RC circuit; And
When (c) potential drop that detects described first input interface when described control circuit is low to moderate a predetermined potential, promptly change the reading speed of described CD-ROM drive.
The method of above-mentioned change CD reading speed, its characteristics are: described button is coupled in one second input interface of described control circuit.
The method of above-mentioned change CD reading speed, its characteristics are: described first input interface be coupled electric capacity and a resistance, the other end ground connection of described electric capacity, and the other end of described resistance is coupled in described second input interface.
The method of above-mentioned change CD reading speed, its characteristics are: described first input interface is coupled in the input interface of another button of described CD-ROM drive panel, and described button is coupled in one second input interface of described control circuit.
The method of above-mentioned change CD reading speed, its characteristics are: described first input interface also is coupled in the p type side of a diode, and the n type side of described diode connects electric capacity and a resistance, the opposite side ground connection of described electric capacity, and the opposite side of described resistance is connected to described second input interface.
The method of above-mentioned change CD reading speed, its characteristics are: described button is selected from the play button, Pause key of a CD-ROM drive panel, advance key, any one in the combination of back spacer and eject key fast fast.
Should " change the CD reading speed " has comprised: the reading speed of CD-ROM drive is adjusted into high multiple (for example: heightened to 52 multiples by 40 multiples) by low multiple, or be adjusted into low multiple (for example: reduce to 40 multiples) by 52 multiples by high multiple, or the adjustment between different multiples, all can do the adjustment of different reading speeds according to user individual's demand.
The present invention allows the user switch the reading speed of CD-ROM drive with simple RC circuit, will help reducing the noise that will be produced when CD-ROM drive operates, and reduce the damage that CD is caused because of long-time high speed rotating, and can improve the transfer rate of data.
The present invention only need utilize on the CD-ROM drive panel that one of them button promptly can be used as the operating key that changes the CD-ROM drive reading speed in the existing button, need not change the design of existing panel, only need to increase by one group of RC circuit and can reach the function of adjusting the CD-ROM drive reading speed, come deisgn product with minimum expense, and then higher use value is provided.
Describe the present invention below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.
Description of drawings
Fig. 1 changes the circuit diagram of first embodiment of the method for CD reading speed for the present invention;
Fig. 2 is the synoptic diagram of capacitor charge and discharge process;
Fig. 3 changes the process flow diagram of first embodiment of the method for CD reading speed for the present invention;
Fig. 4 changes the circuit diagram of second embodiment of the method for CD reading speed for the present invention;
Fig. 5 changes the process flow diagram of second embodiment of the method for CD reading speed for the present invention.
Embodiment
Please refer to shown in Figure 1, the circuit diagram that its first embodiment that changes the method for CD reading speed for the present invention is adopted.First embodiment utilizes on the CD-ROM drive panel in the existing button, selects arbitrary button as the operating key D that changes the CD-ROM drive reading speed, for example: play button, Pause key, advance key, back spacer, eject key etc. fast fast.
When user's desire changes the reading speed of CD-ROM drive, only need continue to push this operating key D after a period of time, can make CD-ROM drive carry out adjustment between different reading speeds, for example: be adjusted into high multiple by low multiple, or be adjusted into low multiple, or carry out the switching between different multiples by high multiple.
Include two main portions in this circuit diagram: a control circuit 10 and one group of RC circuit 20.Control circuit 10 is made up of a chipset (chipset), and it comprises a motor rotary speed control module 11, the first input interface A and the second input interface B.
Motor rotary speed control module 11 is coupled in the motor of CD-ROM drive, with the switching of control motor rotary speed.
But the digital signal of first input interface A in the control circuit 10 and the high and low voltage of the second input interface B sensing.The first input interface A is the control pin that mainly switches in order to the control motor speed, and the first input interface A is coupled with a capacitor C and a resistance R, the other end ground connection (ground) of capacitor C, and the other end of resistance R then is to be connected to the second input interface B.And the operating key D one end that switches in order to the control CD speed is to be connected to the second input interface B equally, and the other end then is a ground connection.
Please refer to shown in Figure 2, when the user continues by after depressing operating key D a period of time, can make to be the operating key D conducting of opening circuit originally, and electric energy stored in the capacitor C is discharged by resistance R, make the current potential decline (dropping to low-voltage) of win the input interface A and the second input interface B by high voltage, when the current potential that detects the first input interface A dropped to some predetermined potentials (Vp), then control circuit 10 was understood CD-ROM drive motor rotary speed controling units 11, to carry out the adjustment between different rotating speeds.On the contrary, when the user does not continue to push operating key D, when decontroling operating key D, when the current potential of the control circuit 10 detectings first input interface A is the state of noble potential (high), then carry out the original function of operating key D.
For example: the reading speed of CD-ROM drive is 40 multiples originally, when user's desire improves its reading speed to 52 multiple, only need continue to push operating key D, for example: eject key (Ejection), by the conducting of RC circuit, the current potential of the first input interface A is descended, when the current potential that detects the first input interface A drops to some predetermined potentials (Vp), control circuit 10 is the rotating speed that CD-ROM drive motor rotary speed controling unit 11 improves the CD-ROM drive motor, to increase its reading speed to 52 multiple.On the contrary, (for example: in the time of eject key), when the current potential of the control circuit 10 detectings first input interface A was higher than predetermined potential (Vp), then control circuit 10 was carried out original ejection function when the user decontrols operating key D.
And when the user decontrol operating key D after, capacitor C can begin to continue charging by control circuit 10 external power supplys, to be returned to current potential originally.
Please refer to shown in Figure 3ly, be the whole process flow diagram of first embodiment of the invention, and that the part of mentioning the circuit operational architecture in the operation of the method sees also is shown in Figure 1, be described as follows:
At first, execution in step 30: the user continues to push operating key.The user continues by after depressing operating key D a period of time, execution in step 40: by the discharge of RC circuit, the current potential of first input interface is reduced.Because after continuing to push operating key D, can make originally to the circuit that opens circuit becomes path, and make that current potential originally is that the capacitor C of noble potential begins discharge.
Capacitor C is after discharge a period of time, and execution in step 50: the potential drop that detected first input interface when control circuit before the user decontrols operating key is low to moderate a predetermined potential; It is execution in step 60: the reading speed that changes CD-ROM drive.Otherwise, if detecting the current potential of the first input interface A, control circuit 10 do not reduce predetermined potential so far, then execution in step 70: carry out the original function of operating key.
Please refer to shown in Figure 4ly, be the circuit diagram that the second embodiment of the present invention adopted.This second embodiment is identical with first embodiment haply, its second input interface B is connected to operating key D, just, the first input interface A that is used for motor rotary speed control, can use the input interface of the original arbitrary button E of CD-ROM drive, this input interface is connected to the p type side of diode G, and the n type side of diode G connects a capacitor C and a resistance R, the opposite side of capacitor C is a ground connection, and the opposite side of resistance R then is to be connected to the second input interface B.
Therefore, when the user when depressing button E because the obstruct of diode G is arranged, can't have influence on the function of operating key D, and can carry out its original function.
And after the user continues to push operating key D a period of time, by the conducting of diode G and the discharge process of RC circuit, can make the current potential decline (dropping to low-voltage) of win the input interface A and the second input interface B equally by high voltage, before the user decontrols operating key D, when the current potential that control circuit 10 detects the first input interface A drops to some predetermined potentials (Vp), control circuit 10 can drive the CD-ROM drive motor, to carry out the adjustment of CD reading speed, for example: be adjusted into high multiple by low multiple, or be adjusted into low multiple, or carry out the switching between different multiples by high multiple.On the contrary, before the user decontrols operating key D, when the current potential that control circuit 10 detects the first input interface A is the state of noble potential (high), then carry out the original function of operating key D.
Please refer to shown in Figure 5, for the user by pushing operating key D reaching the process flow diagram that changes CD speed, and that the part of mentioning the circuit operational architecture in the operation of the method sees also is shown in Figure 4, is described as follows:
If in the time of at the beginning, execution in step 80: the user continues to push operating key.The user continues by after depressing operating key D a period of time, execution in step 90: by the discharge of RC circuit, the current potential of first input interface is reduced.Because after continuing to push operating key D, can make originally to the circuit that opens circuit becomes path, and make that current potential originally is that the capacitor C of noble potential begins discharge.
Capacitor C is after discharge a period of time, and execution in step 100: the potential drop that detected first input interface when control circuit before the user decontrols operating key is low to moderate a predetermined potential; It is execution in step 110: the reading speed that changes CD-ROM drive.Otherwise, if detecting the current potential of the first input interface A, control circuit 10 do not reduce predetermined potential so far, then execution in step 120: carry out the original function of operating key.
And if at the beginning the time, execution in step 130: the user pushes another button, (this another button refers to button E).Because button E conducting, diode G is in the not on-state of reverse bias, and therefore, the voltage that only can make the first input interface A is zero, and the second incoming interface B does not have any variation, and control circuit 10 only can execution in step 140: carry out the original function of another button.
Certainly, the present invention also can have other various embodiments, and under the situation that does not deviate from spirit of the present invention and essence thereof, the structure of device can be improved through further, but these corresponding changes all should belong to the protection domain of the appended claim of the present invention.
Claims (7)
1, a kind of method that changes the CD reading speed, be applied to a CD-ROM drive, and in order to change the reading speed of CD, it is characterized in that: driving the RC circuit that is coupled between arbitrary button of one first input interface and described CD-ROM drive of a control circuit that a CD-ROM drive motor changes rotating speed, after pushing described button, by the conducting of described RC circuit, change the current potential of described first input interface, and then drive described CD-ROM drive motor change speed.
2, the method for change CD reading speed according to claim 1 is characterized in that comprising the following steps:
(a) continue to push described button;
(b), the current potential of described first input interface is reduced by the discharge of described RC circuit; And
When (c) potential drop that detects described first input interface when described control circuit is low to moderate a predetermined potential, promptly change the reading speed of described CD-ROM drive.
3, the method for change CD reading speed according to claim 1 and 2 is characterized in that: described button is coupled in one second input interface of described control circuit.
4, the method for change CD reading speed according to claim 3 is characterized in that: described first input interface be coupled electric capacity and a resistance, and the other end ground connection of described electric capacity, and the other end of described resistance is coupled in described second input interface.
5, the method for change CD reading speed according to claim 1 and 2, it is characterized in that: described first input interface is coupled in the input interface of another button of described CD-ROM drive panel, and described button is coupled in one second input interface of described control circuit.
6, the method for change CD reading speed according to claim 5, it is characterized in that: described first input interface also is coupled in the p type side of a diode, and the n type side of described diode connects electric capacity and a resistance, the opposite side ground connection of described electric capacity, and the opposite side of described resistance is connected to described second input interface.
7, the method for change CD reading speed according to claim 1 and 2 is characterized in that: described button is selected from the play button, Pause key of a CD-ROM drive panel, advance key, any one in the combination of back spacer and CD lock open key fast fast.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03153940 CN1284168C (en) | 2003-08-21 | 2003-08-21 | Method for changing disc reading speed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03153940 CN1284168C (en) | 2003-08-21 | 2003-08-21 | Method for changing disc reading speed |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1585014A CN1585014A (en) | 2005-02-23 |
| CN1284168C true CN1284168C (en) | 2006-11-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03153940 Expired - Lifetime CN1284168C (en) | 2003-08-21 | 2003-08-21 | Method for changing disc reading speed |
Country Status (1)
| Country | Link |
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| CN (1) | CN1284168C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101030420B (en) * | 2006-03-02 | 2010-09-01 | 鸿富锦精密工业（深圳）有限公司 | Speed-variating method of disk driver and disk driver therewith |
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2003
- 2003-08-21 CN CN 03153940 patent/CN1284168C/en not_active Expired - Lifetime
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| Publication number | Publication date |
|---|---|
| CN1585014A (en) | 2005-02-23 |
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Granted publication date: 20061108 |