Tactile designation device with high-resolution transparent capa

Details Tactile designation device with high-resolution transparent capa Tactile designation device with high-resolution transparent capa

1996-03-15

1998-09-01

Saras, Steven J.

Computer graphics processing and selective visual display system

Display peripheral interface input device

Touch panel

345173, 178 18, 178 20, G09G 302, G08C 2100

Patent

active

058016821

ABSTRACT:
A tactile designation device comprises a continuous transparent capacitive surface supported at its corners by flexible strips to which there are attached strain gauges, a HF supply source, a series capacitor, a multiplexer, a detection circuit and a computer. The corners of the capacitive surface are connected alternately to the HF voltage, and the voltages measured are compared with a table of values to determine the touch point.

REFERENCES:
patent: 5113041 (1992-05-01), Blonder et al.
patent: 5231381 (1993-07-01), Duwaer
patent: 5374787 (1994-12-01), Miller et al.
patent: 5376948 (1994-12-01), Roberts
patent: 5488204 (1996-01-01), Mead et al.

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