Computer graphics processing and selective visual display system – Display peripheral interface input device – Touch panel
Reexamination Certificate
2007-03-12
2010-10-12
Hjerpe, Richard (Department: 2629)
Computer graphics processing and selective visual display system
Display peripheral interface input device
Touch panel
C345S173000
Reexamination Certificate
active
07812830
ABSTRACT:
A touch screen controller circuit (1A) including means for generating a first and second levels of a pen touch signal (PENTOUCH) if a touch point (Q) is present or absent, respectively. A clock start signal (CLKSTART) is generated in response to the first level. An internal clock signal (INTCLK) is generated in response to the clock start signal. First and second levels of a synchronized pen touch signal (PENTOUCH1) corresponding to the first and second levels, respectively, of the pen touch signal are generated in response to the internal clock signal. A stop clock signal (CLKSTOP) is generated in response to the second level of the synchronized pen touch signal. The internal clock signal (INTCLK) is stopped in response to the clock stop signal.
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Brady III Wade J.
Hjerpe Richard
Parker Jeffrey
Patti John J.
Telecky , Jr. Frederick J.
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