Padless touch sensor

Details Padless touch sensor Padless touch sensor

1997-04-15

1998-06-02

Zimmerman, Brian

Coded data generation or conversion

Bodily actuated code generator

Including keyboard or keypad

200600, 345173, 345174, 341 26, 341 34, 361181, 178 18, H03K 1794, H03M 1100

Patent

active

057607150

ABSTRACT:
The padless touch sensor is used for detecting a touch at a sensing location onto a dielectric element by a user coupled to earth. The sensor comprises a conductive plate attached under the dielectric element and in registry with the sensing location. A predetermined potential is applied on the conductive plate. Simultaneously, test pulses are produced into earth. When the user touches the dielectric element at the sensing location, a potential variation in the conductive plate is produced during a test pulse due to a capacitive circuit formed between earth, the user and the sensor. No deposition of conductive pads on the dielectric element or other special processes are required. Foreign matter or objects placed directly on top of the dielectric element will not erroneously produce a touch condition.

REFERENCES:
patent: 4016490 (1977-04-01), Weckenmann et al.
patent: 4175239 (1979-11-01), Sandler
patent: 4221975 (1980-09-01), Ledniczki et al.
patent: 4257117 (1981-03-01), Besson
patent: 4321479 (1982-03-01), Ledniczki et al.
patent: 4353552 (1982-10-01), Pepper, Jr.
patent: 4550310 (1985-10-01), Yamaguchi et al.
patent: 4556871 (1985-12-01), Yoshikawa et al.
patent: 4561002 (1985-12-01), Chiu
patent: 4651133 (1987-03-01), Ganesan et al.
patent: 4806809 (1989-02-01), Evans
patent: 4924222 (1990-05-01), Antikidis et al.
patent: 4954820 (1990-09-01), Kohno et al.
patent: 5012124 (1991-04-01), Hollaway
patent: 5194862 (1993-03-01), Edwards
patent: 5270710 (1993-12-01), Gaultier et al.
patent: 5457289 (1995-10-01), Huang et al.
patent: 5495077 (1996-02-01), Miller et al.
patent: 5508700 (1996-04-01), Taylor et al.
patent: 5526294 (1996-06-01), Ono et al.
patent: 5526428 (1996-06-01), Arnold
patent: 5534857 (1996-07-01), Laing et al.
patent: 5577121 (1996-11-01), Davis et al.

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