H - Electricity – 03 – M
Patent
H - Electricity
03
M
340/178
H03M 11/00 (2006.01)
Patent
CA 1214237
TOUCH CONTROL ARRANGEMENT FOR DATA ENTRY ABSTRACT OF THE DISCLOSURE A touch control arrangement is disclosed which employs a touch panel comprising a plurality of touch keys and a network of electrically connected capacitive elements; an oscillator which incorporates the network of capacitive elements in its timing circuit; and a microprocessor coupled to the output of the oscillator and operative to control various appliance operating components as determined by the frequency of the oscil- lator output signal. The keys of the touch panel are operatively coupled to the network of capacitive el- ements such that actuation of a key or pad by the user changes the equivalent capacitance of the timing circuit causing the oscillator to generate a control signal at the frequency associated with the actuated key. In one embodiment, the touch control arrange- ment employs a tactile touch keyboard arrangement in which the user actuates a key by depressing the key, which changes the equivalent capacitance of the network to the value corresponding to the actuated key by shunt- ing a predetermined portion of the capacitive network. In another emobdiment, the touch control arrangement employs a capacitive touch pad array in which body capacitance of the user when touching a key changes the equivalent capacitance of the capacitive network to the value associated with the pad that is touched.
393163
Company General Electric
Eckersley Raymond A.
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