发明名称 |
Touch Trace Detecting Device, System and Method Thereof |
摘要 |
The present invention provides a method for detecting touch trace while preventing interruption of the touch traces in the presence of interfering noise, comprising: changing frequency of driving signals in response to a detection of noise; setting a plurality of lines of first sensing signal values obtained from a first sensing as a plurality of baselines; obtaining a plurality of difference values by comparing a plurality of lines of second sensing signal values obtained from a second sensing against said plurality of baselines; determining whether all said plurality of difference values are smaller than a threshold value; determining whether the flatness of said plurality of baselines is greater than a flatness threshold value if all said plurality of difference values are determined to be smaller than said threshold value; and reporting, in response to the flatness of said plurality of baselines is determined to be greater than said flatness threshold value, a first proximity or touch event, said first proximity or touch event being the last proximity or touch event taking place before frequency of said driving signals is changed. |
申请公布号 |
US2015153900(A1) |
申请公布日期 |
2015.06.04 |
申请号 |
US201414561192 |
申请日期 |
2014.12.04 |
申请人 |
EGALAX_EMPIA TECHNOLOGY INC. |
发明人 |
CHANG CHIN-FU;YEH SHANG-TAI;TAI HUNG-YUN |
分类号 |
G06F3/041;G06F3/044 |
主分类号 |
G06F3/041 |
代理机构 |
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代理人 |
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主权项 |
1. A method for detecting touch trace while preventing interruption of the touch traces in the presence of interfering noise, comprising:
changing frequency of driving signals in response to a detection of noise; setting a plurality of lines of first sensing signal values obtained from a first sensing as a plurality of baselines; obtaining a plurality of difference values by comparing a plurality of lines of second sensing signal values obtained from a second sensing against said plurality of baselines; determining whether all said plurality of difference values are smaller than a threshold value; determining whether the flatness of said plurality of baselines is greater than a flatness threshold value if all said plurality of difference values are determined to be smaller than said threshold value; and reporting, in response to the flatness of said plurality of baselines is determined to be greater than said flatness threshold value, a first proximity or touch event, said first proximity or touch event being the last proximity or touch event taking place before frequency of said driving signals is changed. |
地址 |
Taipei City TW |