发明名称 |
Device for controlling touch panel |
摘要 |
Disclosed herein is a device including a differential amplification unit for supplying current to the touch panel; a signal amplification unit for amplifying the output voltage of the differential amplification unit; an analog-digital conversion unit for converting the analog output signal of the signal amplification unit into a digital signal; a control unit for measuring the signal output from the analog-digital conversion unit and detecting the position of an object when the object touches the touch panel; and a sine wave generating unit for providing a sine wave signal to the differential amplification unit in response to the output signal of the control unit, supplying a maximum current to the differential amplification unit while the touch panel is in a standby state, and controlling the level of the sine wave signal in response to conductivity of the object when the object touches the touch panel.
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申请公布号 |
US7479951(B2) |
申请公布日期 |
2009.01.20 |
申请号 |
US20050067831 |
申请日期 |
2005.02.17 |
申请人 |
DIGITECH SYSTEMS CO., LTD |
发明人 |
KIM CHANG HWAN |
分类号 |
G06F3/033;G09G5/00;G06F3/041;G06F3/045 |
主分类号 |
G06F3/033 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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