发明名称 |
Touch screen calibration system and method |
摘要 |
Disclosed is a touch screen calibration system and method that applies a signal to a the terminals of a touch screen and applies a calibration impedance to those terminals; the effect of the calibration impedance applied to the terminals is sensed; the X, Y position for each terminal is calculated upon application of the calibration impedance and the offset error for each terminal is calculated and applied to obtain the corrected touch position for a measured touch position; in addition the gain error may be calculated for each terminal and applied to obtain the corrected touch position.
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申请公布号 |
US6977646(B1) |
申请公布日期 |
2005.12.20 |
申请号 |
US20010998699 |
申请日期 |
2001.11.30 |
申请人 |
3M INNOVATIVE PROPERTIES CO. |
发明人 |
HAUCK KARL P.;HARES LUKE DAVID RONALD |
分类号 |
G06F3/045;G06F3/033;G06F3/041;G06F3/044;(IPC1-7):G09G5/00 |
主分类号 |
G06F3/045 |
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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