Keyboard with integrated pointer control function

Details Keyboard with integrated pointer control function Keyboard with integrated pointer control function

2007-03-20

2007-03-20

Eisen, Alexander (Department: 2629)

Computer graphics processing and selective visual display system

Display peripheral interface input device

Including keyboard

C341S022000

Reexamination Certificate

active

10769595

ABSTRACT:
A dual-function keyboard with two operational modes, a typing mode and a pointing mode. In the typing mode, each visible key functions as in a standard keyboard. In the pointing mode, all the keys function as pointer controllers. The keyboard also employs a novel “one-hot-encoding” circuitry that simplifies the wiring while allowing digital detection of any number of keys that are simultaneously depressed. The keyboard may be made of flexible materials and may be rolled-up or folded for easy transportation.

REFERENCES:
patent: 5041819 (1991-08-01), Takeda
patent: 5675361 (1997-10-01), Santilli
patent: 5691716 (1997-11-01), Crowley et al.
patent: 6204839 (2001-03-01), Mato, Jr.
patent: 6469694 (2002-10-01), Mikan
patent: 07319596 (1995-12-01), None

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