Dual rate bi-directional switch
AssigneeMotorola, Inc.
InventorsDonald C. Cohlman, Daniel R. Schroeder
Life of this patent
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Abstract
A dual rate bi-directional switching system is utilized to control a radio receiver function. An actuator rotates and translates in order to sequentially actuate selected electrical switches which are coupled to a logic circuit by means of two conductors. The logic circuit establishes logic signals to control both the direction and rate of change of the function in response to the position of the actuator.
Claims11
A dual rate bi-directional electrical switching system especially adapted to control a radio receiver function, comprising:
- actuator means adapted for both rotation and translation in the same plane;
- a plurality of electrical switches positioned adjacent to and capable of being selectively sequentially actuated by said actuator means, said plurality being separated into two groups of switches, at least one member of each group being actuatable by a corresponding rotation of said actuator;
- conductor means comprising two conductors connected to said plurality of electrical switches;
- and
- logic means connected to said conductor means, establishing logic control signals in response to selective sequential actuation of said plurality of electrical switches, whereby both the direction and rate of change of the function are controlled in response to the position of said actuator means.
A dual rate bi-directional electrical switching system for adjusting a predetermined function of a radio receiver having an operator accessible actuator mounted on the front panel thereof, comprising:
- actuator means, adapted for both rotation and translation in a plane substantially perpendicular to said front panel, said actuator means being generally triangular in shape when viewed from a side and having a rotational axis at one vertex of said triangular shape, said rotational axis laying in a plane substantially parallel with the plane of said front panel, said actuator means further including pairs of projections extending outwardly from each triangular line segment adjacent said vertex;
- two pairs of electrical switches, one of said pairs being located on each side of said rotational axis, said switches in each of said pairs being in alignment with and capable of being actuated by corresponding ones of said actuator projections;
- two of conductors, each of said conductors being connected to one switch from each of said pairs of electrical switches;
- and
- logic means, coupled to said two conductors, including flip-flop means establishing a logic output designating the selected direction for change of said predetermined function and logic gate means establishing a logic output designating the rate of change of said function as determined by which members of one of said pair of switches have been actuated, whereby the predetermined function is adjusted in accordance with a rotation and translation of said actuator.
Dependencies are inferred from the claim text.