Electrical transmission or interconnection systems – Switching systems – Condition responsive
Patent
1978-04-19
1980-09-09
Hix, L. T.
Electrical transmission or interconnection systems
Switching systems
Condition responsive
340365C, G08C 902, H01H 3500
Patent
active
042219752
ABSTRACT:
A touch activated controller generates UP/DOWN control signals in response to movement of a human finger (or other comparable contact) along a control surface thereof. The UP information is derived from movement of the finger in one direction and the DOWN information is derived from movement in a substantially opposite direction. This system generates a sequence of control signals in one or the other of the two directions. In addition, when the finger is removed from the device the output remains in its last previous state or condition existing before removing the finger. Thus, the logic of the system is sensitive substantially to motion and direction of movement so that the logic of the operation of the device closely resembles the motion of a thumbwheel control. Merely placing a finger on the surface of thumbwheel or on the surface of the disclosed device generates no change in the position of the thumbwheel or the output of the device herein. When a finger is moved in one direction while in contact with the control surface of the device or the thumbwheel the output of the device will generate control signals counting up or down depending on the direction of movement of the finger.
REFERENCES:
patent: T904088 (1972-11-01), Crouse
patent: 3648029 (1972-03-01), Ungnadner
patent: 3786497 (1974-01-01), Davis
patent: 3921166 (1975-11-01), Volpe
patent: 4121204 (1978-10-01), Welch et al.
Ledniczki Ferenc
Patak Richard J.
Wayne Ronald G.
Dwyer James L.
Hix L. T,.
Touch Activated Switch Arrays, Inc.
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