Boots – shoes – and leggings
Patent
1991-12-23
1993-06-15
Richardson, Robert L.
Boots, shoes, and leggings
395550, 364707, 365227, G06F 132
Patent
active
052206726
ABSTRACT:
A method is provided for decreasing the power consumption of a sequential digital circuit having a plurality of states being determined from the current state and the input conditions and entered upon the assertion of a pulse from one or more clocks. The method consists of interrupting the switching created by the clock pulses and maintaining the system in a quiescent state. It is first determined whether a subsequent clock pulse will lead to a change in the state of the circuit. If it will, the circuit either waits for a change in the input conditions and state of the circuit, or changes some of the input conditions, depending on the embodiment of the invention. When a circuit configuration is reached in which further clock pulses will not lead to a change in the state of the circuit, the clock signal(s) are replaced by continuously asserted signals. The feedback loop thus created maintains the current state of the circuit in the absence of a clock signal and prevents further switching in the circuit.
REFERENCES:
patent: 4316247 (1982-02-01), Iwamoto
patent: 4570219 (1986-02-01), Shibukawa et al.
patent: 4615005 (1986-09-01), Maejima et al.
patent: 4748559 (1988-05-01), Smith et al.
patent: 4758945 (1988-07-01), Remedi
patent: 4851987 (1989-07-01), Day
Kasai Yoshio
Nakao Yuichi
Mitsubishi Denki & Kabushiki Kaisha
Richardson Robert L.
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