Apparatus and method for sensing the degree and touch strength of a human body on a sensor
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United States of America Patent
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Feb 28, 2006
Grant Date -
Nov 13, 2003
app pub date -
May 7, 2002
filing date -
May 7, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An improvement in sensor for detecting contact with a human resistive element is disclosed. This design uses additional components to avoid discharging capacitors through the human resistive element, thereby sparing the user the uncomfortable sensation associated therewith and increasing the power requirements of the device. In addition, designs are utilized which multiple sensing points are multiplexed to achieve greater resolution while with a lower pin count at the signal processing chip.
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