Up/down counter

Details Up/down counter Up/down counter

1998-05-04

2000-01-25

Wambach, Margaret R.

Electrical pulse counters, pulse dividers, or shift registers: c

Pulse counting or dividing chains

Using bistable regenerative trigger circuits

377 45, G06M 300

Patent

active

060185600

ABSTRACT:
The counter of the present invention includes an input unit, a sampling unit and a determiner unit. The input unit receives a plurality of control signal including a mode selection signal, a clock signal and a reset signal. The sampling unit receives output signals of the input unit based on the clock signal and reset signal. The sampling unit has a plurality of latches and generating a plurality of first output signals and the adjacent latch of the plurality of latches are coupled to each other. The determiner unit is coupled to the sampling unit to receive the plurality of first output signals and is coupled to the input unit to receive an output signal based on the mode selection signal. The determiner unit outputs a plurality of count signals indicative of a count value, which is incremented or decremented based on the mode selection signal.

REFERENCES:
patent: 4741006 (1988-04-01), Yamaguchi et al.
patent: 4961014 (1990-10-01), Kasahara
patent: 5206890 (1993-04-01), Fujita

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