CN102375630A - Surface capacitance type touch control device and control method thereof - Google Patents
Surface capacitance type touch control device and control method thereof Download PDFInfo
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- CN102375630A CN102375630A CN2010102552018A CN201010255201A CN102375630A CN 102375630 A CN102375630 A CN 102375630A CN 2010102552018 A CN2010102552018 A CN 2010102552018A CN 201010255201 A CN201010255201 A CN 201010255201A CN 102375630 A CN102375630 A CN 102375630A
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Abstract
The invention provides a surface capacitance type touch control device and a control method thereof. The control method of the surface capacitance type touch control device comprises the following steps of: providing first output power to a surface capacitance type touch control panel so that four corners of the surface capacitance type touch control panel discharge; and providing second power to the surface capacitance type touch control panel when the touch of the surface capacitance type touch control panel by an object is not detected in a preset time, wherein the second output power is lower than the first output power.
Description
Technical field
The present invention relates to a kind of surface capacitance type contactor control device, particularly relate to a kind of surface capacitance type contactor control device that can reduce power consumption stream.
Background technology
Along with science and technology is maked rapid progress, also improve day by day for the performance requirement of electronic product, like the simplification of miniaturization of size, the convenience of carrying, operation etc.Because the use that touch technology can be save keyboard.Therefore, the electronic product that has a touch technology little by little is applied on Automated Teller Machine (ATM), the mobile phone.
The one of which of touch technology is the surface capacitance type touch technology.This kind surface capacitance type contactor control device is to utilize the one group of electric current that flows to four jiaos of panels to differentiate the position of finger.But use at present in large-sized surface capacitance type contactor control device, like the power consumption stream of Automated Teller Machine at least about 50 milliamperes (mA) are arranged.If the portable surface capacitive touch device still has so big power consumption stream, then be unfavorable for long-time use.
Summary of the invention
In view of this; The embodiment of the invention proposes a kind of surface capacitance type contactor control device and control method thereof with battery saving mode; By reducing the output power of driving circuit to surperficial capacitance type touch-control panel; Come significantly to reduce power consumption stream, increase the service time of portable surface capacitive touch device greatly.
According to one embodiment of the invention, a kind of control method of surface capacitance type contact panel is proposed, the method comprises provides one first output power surface capacitance type contact panel so far, makes four jiaos of discharges of this surface capacitance type contact panel; And in a Preset Time, do not detect an object and touch the surface capacitance type contact panel, one second output power to surface capacitance type contact panel is provided, wherein, second output power is less than first output power.
According to another embodiment of the present invention, a kind of surface capacitance type contactor control device is proposed.This surface capacitance type contactor control device comprises a surface capacitance type contact panel and an one drive circuit.This driving circuit couples surface capacitance type contact panel so far; In order to output power surface capacitance type contact panel contact panel so far to be provided; Make four jiaos of discharges of this surface capacitance type contact panel; Wherein in a Preset Time, do not detect an object and touch this surface capacitance type contact panel, this driving circuit reduces output power.
For making the foregoing of the present invention can be more obviously understandable, hereinafter is special lifts embodiment, and is described with reference to the accompanying drawings as follows.
Description of drawings
Fig. 1 show according to the surface capacitance type contactor control device of the embodiment of the invention synoptic diagram.
Fig. 2 shows the process flow diagram of control method of the surface capacitance type contactor control device of Fig. 1.
Fig. 3 A shows the surface capacitance type contactor control device of Fig. 1 in normal mode, and driving circuit is exported to wherein one jiao the oscillogram of output voltage of surface capacitance type contact panel.
Fig. 3 B shows the surface capacitance type contactor control device of Fig. 1 in battery saving mode, and driving circuit is exported to wherein one jiao the oscillogram of output voltage of surface capacitance type contact panel, and wherein, the amplitude of output voltage reduces.
Fig. 3 C shows the surface capacitance type contactor control device of Fig. 1 in battery saving mode, and driving circuit is exported to wherein another waveform example of output voltage of one jiao of surface capacitance type contact panel, and wherein, the frequency of output voltage reduces.
The reference numeral explanation
10: the surface capacitance type contactor control device
12: the surface capacitance type contact panel
13: finger
14: driving circuit
122,124,126,128: the angle
S210, S220, S230, S231, S232, S250: step
Embodiment
Please be simultaneously with reference to Fig. 1 and Fig. 2, Fig. 1 shows the surface capacitance type contactor control device 10 of the embodiment of the invention.Fig. 2 shows the control method of the surface capacitance type contactor control device 10 of Fig. 1.As shown in Figure 1, surface capacitance type contactor control device 10 comprises surface capacitance type contact panel 12 and drive unit 14.Four jiao 122,124,126 and 128 of surface capacitance type contact panel 12 electrically connects driving circuit 14.
When surface capacitance type contactor control device 10 during at a normal mode; Driving circuit 14 provides one first output power to surface capacitance type contact panel 12 (like step S210); Make and four jiao 122,124,126 and 128 discharges of surface capacitance type contact panel 12 let surface capacitance type contactor control device 10 can respond to object.For example, if user's finger 13 touches the position of surface capacitance type contact panel 12, then surface capacitance type contactor control device 10 can carry out computing to detect the position of touching a little.
In a Preset Time, for example 5 minutes, surface capacitance type contactor control device 10 detected and has or not object to touch surface capacitance type contact panel 12 (like step S220).If have, then driving circuit 14 continues to provide first output power.If in Preset Time, not detecting object touches surface capacitance type contact panel 12, then surface capacitance type contactor control device 10 gets into a battery saving mode, for example park mode.When battery saving mode, driving circuit 14 provides second output power to surface capacitance type contact panel 12, and wherein, second output power is less than first output power (like step S230).That is after surface capacitance type contactor control device 10 got into battery saving mode by normal mode, driving circuit 14 can reduce its output power, reduced power consumption stream.
The sweep frequency (like step S232) that the output voltage (like step S231) of exporting to surface capacitance type contact panel 12 that can reduce driving circuit 14 maybe can reduce surperficial capacitance type touch-control panel 12 reduces output power.
If driving circuit 14 is to reduce the output voltage of exporting to surface capacitance type contact panel 12 to reduce output power; Driving circuit 14 can to four jiao 122,124 of surperficial capacitance type touch-control panel 12, at least one angle of 126 and 128 stops output power and normal output power is given at least one angle, reduces output voltage.For instance, when at normal mode, four jiao 122,124 of 14 pairs of surperficial capacitance type touch-control panels 12 of driving circuit, 126 and 128 output current respectively are 10 milliamperes (mA); After surface capacitance type contactor control device 10 gets into battery saving mode; Driving circuit 14 stops a jiao (like angle 122) that output voltage is given surface capacitance type contact panel 12; But to 124,126 and 128 normal output voltages of other triangle (such as; Its electric current is 10mA), make driving circuit 14 reduce output voltage to surperficial capacitance type touch-control panel 12.
Perhaps; Driving circuit 14 can stop output voltage and give its intermediate cam of surface capacitance type contact panel 12 (for example 122,124,126); Only, come further to reduce output voltage to surperficial capacitance type touch-control panel 12 to one jiao of 128 normal output voltage of surperficial capacitance type touch-control panel 12.
In addition; Driving circuit 14 can reduce the output voltage (such as output voltage is reduced by half) at four jiao 122,124 of exporting to surface capacitance type contact panel 12, at least one angle (like angle 122) of 126 and 128, to reduce the output power to surperficial capacitance type touch-control panel 12.For example, when surface capacitance type contactor control device 10 during at normal mode, four jiao 122,124 of 14 pairs of surperficial capacitance type touch-control panels 12 of driving circuit, 126 and 128 output voltage are shown in Fig. 3 A.After surface capacitance type contactor control device 10 got into battery saving mode, shown in Fig. 3 B, the output voltage at least one angle of four jiaos of 14 pairs of surperficial capacitance type touch-control panels 12 of driving circuit reduced by half.Or driving circuit 14 reduces four jiao 122,124 of exporting to surface capacitance type contact panel 12,126 and 128 four jiaos output voltage (such as output voltage is reduced by half), to reduce the output power to surperficial capacitance type touch-control panel 12.
In addition, after surface capacitance type contactor control device 10 got into battery saving mode, shown in Fig. 3 C, driving circuit 14 also can be reduced to the sweep frequency of exporting to surface capacitance type contact panel 12 half the, reduces output power.
When if the user wants to operate this surface capacitance type contactor control device 10; User's finger 13 touches this angle of regular picture; Driving circuit 14 can be replied provides first output power to surface capacitance type contact panel 12 (step S250), makes surface capacitance type contactor control device 10 to carry out computing according to the position that object touches.
In other embodiment, driving circuit 14 can and use the mode that reduces sweep frequency and minimizing output voltage further to reduce output power, flows to reduce power consumption.
In embodiments of the present invention, tube drive circuit 14 is not to reduce sweep frequency or reduce output voltage, and in the case, surface capacitance type contactor control device 10 still can detect object and whether touch surface capacitance type contact panel 12.That is to say; When battery saving mode; After surface capacitance type contactor control device 10 detects object and touches surface capacitance type contact panel 12; Driving circuit 14 is replied first output power (like step S250) is provided, and makes surface capacitance type contactor control device 10 can detect the position that object touches surface capacitance type contact panel 12.
Therefore; After the surface capacitance type contactor control device that the embodiment of the invention proposes gets into battery saving mode; Driving circuit can reduce the output power to surperficial capacitance touching control electroplax; Let the power consumption stream of surface capacitance type contactor control device reduce significantly, when the surface capacitance type contactor control device of the embodiment of the invention is to use battery to supply power, can significantly increase service time/waiting time.
In sum, though the present invention discloses as above with embodiment, so it is not in order to limit the present invention.Those skilled in the art under the premise without departing from the spirit and scope of the present invention, can do various changes and retouching.Therefore, protection scope of the present invention is to be as the criterion with claim of the present invention.
Claims (12)
1. control method that is used in a surface capacitance type contact panel comprises:
Provide one first output power to this surface capacitance type contact panel, make four jiaos of discharges of this surface capacitance type contact panel; And
In a Preset Time, do not detect an object and touch this surface capacitance type contact panel, provide one second output power to this surface capacitance type contact panel;
Wherein this second output power is less than this first output power.
2. control method as claimed in claim 1 also comprises:
When this object touched this surface capacitance type contact panel, replying provided this first output power to this surface capacitance type contact panel.
3. control method as claimed in claim 1 wherein, provides this second output power by reducing the one scan frequency.
4. control method as claimed in claim 1 wherein, provides this second output power by reducing by an output voltage.
5. control method as claimed in claim 4, wherein:
Reduce this output voltage, make at least one angle of four jiaos of this surface capacitance type contact panel stop discharge and at least one angle is discharge; And
This at least one angle of this surface capacitance type contact panel of touching discharge provides this first output power to this surface capacitance type contact panel with answer.
6. control method as claimed in claim 4, wherein:
Reduce this output voltage, make at least one angle discharge of this surface capacitance type contact panel reduce by half; And
Touch this surface capacitance type contact panel, provide this first output power to this surface capacitance type contact panel with answer.
7. surface capacitance type contactor control device comprises:
One surface capacitance type contact panel; And
One drive circuit is coupled to this surface capacitance type contact panel, in order to provide an output power to this surface capacitance type contact panel, makes four jiaos of discharges of this surface capacitance type contact panel;
Wherein in a Preset Time, do not detect an object and touch this surface capacitance type contact panel, this driving circuit reduces this output power.
8. surface capacitance type contactor control device as claimed in claim 7, wherein when this object touched this surface capacitance type contact panel, this driving circuit is replied provided this output power to this surface capacitance type contact panel.
9. surface capacitance type contactor control device as claimed in claim 7, wherein this driving circuit is to reduce this output power by reducing the one scan frequency.
10. surface capacitance type contactor control device as claimed in claim 7, wherein this driving circuit is to reduce this output power by reducing by an output voltage.
11. surface capacitance type contactor control device as claimed in claim 10, wherein this driving circuit reduces this output voltage, makes at least one angle of four jiaos of this surface capacitance type contact panel stop discharge and at least one angle is discharge; And this angle of this surface capacitance type contact panel of touching discharge, making this driving circuit reply provides this output power to this surface capacitance type contact panel.
12. surface capacitance type contactor control device as claimed in claim 10, wherein this driving circuit reduces this output voltage, makes at least one angle discharge of this surface capacitance type contact panel reduce by half; And touch this surface capacitance type contact panel, making this driving circuit reply provides this output power to this surface capacitance type contact panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010255201.8A CN102375630B (en) | 2010-08-17 | 2010-08-17 | Surface capacitance type touch control device and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010255201.8A CN102375630B (en) | 2010-08-17 | 2010-08-17 | Surface capacitance type touch control device and control method thereof |
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| Publication Number | Publication Date |
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| CN102375630A true CN102375630A (en) | 2012-03-14 |
| CN102375630B CN102375630B (en) | 2014-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201010255201.8A Expired - Fee Related CN102375630B (en) | 2010-08-17 | 2010-08-17 | Surface capacitance type touch control device and control method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103543857A (en) * | 2012-07-10 | 2014-01-29 | 瀚宇彩晶股份有限公司 | Driving device and method of touch panel |
| CN104407750A (en) * | 2014-05-31 | 2015-03-11 | 福州大学 | 3D (Three-Dimensional) production method of capacitive touch screen |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1744023A (en) * | 2004-08-31 | 2006-03-08 | 义隆电子股份有限公司 | Capacitance contact-control board structure and electricity saving mechanism using same |
| CN101561730A (en) * | 2008-04-16 | 2009-10-21 | 义隆电子股份有限公司 | Power-saving capacitance touch control device and method thereof |
-
2010
- 2010-08-17 CN CN201010255201.8A patent/CN102375630B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1744023A (en) * | 2004-08-31 | 2006-03-08 | 义隆电子股份有限公司 | Capacitance contact-control board structure and electricity saving mechanism using same |
| CN101561730A (en) * | 2008-04-16 | 2009-10-21 | 义隆电子股份有限公司 | Power-saving capacitance touch control device and method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103543857A (en) * | 2012-07-10 | 2014-01-29 | 瀚宇彩晶股份有限公司 | Driving device and method of touch panel |
| CN104407750A (en) * | 2014-05-31 | 2015-03-11 | 福州大学 | 3D (Three-Dimensional) production method of capacitive touch screen |
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| Publication number | Publication date |
|---|---|
| CN102375630B (en) | 2014-03-12 |
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