Low pin count solution using capacitance sensing matrix for keyboard architecture

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United States of America Patent

PATENT NO 9019133
SERIAL NO

13932672

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Abstract

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An apparatus and method for selecting a keyboard key based on a position of a presence of a conductive object on a sensing device and a pre-defined area of the keyboard key. The apparatus may include a sensing device and a processing device. The sensing device may include a plurality of sensor elements to detect a presence of a conductive object on the sensing device. Multiple keyboard keys are assigned to pre-defined areas of the sensing device. The processing device is coupled to the sensing device using capacitance sensing pins, and may be operable to determine a position of the presence of the conductive object, and to select a keyboard key based on the position of the conductive object and the pre-defined areas of the sensing device.

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Patent Owner(s)

Patent OwnerAddress
WISTRON CORPORATION21F NO 88 SEC 1 HSINTAI 5TH RD HSICHIH NEW TAIPEI CITY 22181

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hua, Liu Shanghai, CN 6 360
Jiang, XiaoPing Shanghai, CN 19 72

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Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges1641070210723620127214901 - 1011 - 2021 - 3031 - 4041 - 5051 - 6061 - 7071 - 8081 - 9091 - 100100 +0501001502002503003504004505005506006507007508008509009501000105011001150

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11.5 Year Payment $7400.00 $3700.00 $1850.00 Oct 28, 2026