Telegraphy – Systems – Position coordinate determination for writing
Reexamination Certificate
2011-01-25
2011-01-25
Lefkowitz, Sumati (Department: 2629)
Telegraphy
Systems
Position coordinate determination for writing
C178S018010, C178S018080, C345S173000
Reexamination Certificate
active
07875814
ABSTRACT:
An electromagnetic digitizer having a sensor segment that includes a generally longitudinal network of conductive lines. Two or more conductive lines are coupled in parallel. To enhance sensitivity, the adjacent lines are interconnected along the longitudinal structure, using interconnections in the form of short lines, oriented at an angle. The sensor segments may be miniaturized, to facilitate integration into a display module using semiconductor fabrication processes. Various sensor array structures may be implemented using the sensor segment structures. The sensor array may include longitudinal sensor segments arranged in a parallel array. To further enhancing sensitivity of the sensor array, additional lines may be provided between adjacent longitudinal sensor segments. The sensor array may also include half loop (or U-shaped) sensor segments arranged in an overlapping parallel array, or full loop sensor segments arranged in an overlapping parallel array.
REFERENCES:
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patent: 5136125 (1992-08-01), Russell
patent: 5214427 (1993-05-01), Yano
patent: 2005/0133279 (2005-06-01), Thacker
patent: 2480920 (2002-03-01), None
Chen Dinguo
Lee Yingchih
Horner Jonathan
Lefkowitz Sumati
Liu & Liu
TPO Displays Corp.
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