Appliance control system with solid state appliance controller

Details Appliance control system with solid state appliance controller Appliance control system with solid state appliance controller

2005-02-15

2005-02-15

Patel, Ramesh (Department: 2121)

Data processing: generic control systems or specific application

Generic control system, apparatus or process

Sequential or selective

C700S011000, C700S012000, C700S013000, C700S014000, C700S020000, C700S296000, C068S012010, C068S012270, C200S019070, C200S019080, C200S0380DB, C200S050320, C200S050340

Reexamination Certificate

active

06856841

ABSTRACT:
A solid state appliance controller includes circuitry formed on a circuit board, the circuitry defining a voltage trace in communication with a voltage source, a first state trace, and a second state trace. The first and second state traces are in communication with a processor. A user selection knob is operative to allow a user to select an operating mode of the appliance by rotating the user selection knob. A wiper assembly is coupled to the user selection knob for rotation therewith. The wiper assembly has a voltage finger operative to be in contact with the voltage trace so as to continuously receive a voltage therefrom during rotation of the selection knob. A first finger is operative to intermittently contact the first trace in accordance with a first pattern thereof wherein contact provides the voltage to the first trace during rotation of the selection knob. A second finger is operative to intermittently contact the second trace in accordance with a second pattern thereof wherein contact provides the voltage to the second trace during rotation of the selection knob. The processor is operative to receive voltages from the first and second traces in accordance with the intermittent contact of the first and second fingers with the intermittent voltages from the first and second traces respectively defining a plurality of state changes.

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