Increased resolution counting circuit

Details Increased resolution counting circuit Increased resolution counting circuit

1986-05-16

1987-05-26

Miller, Stanley D.

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

Systems

Identifying or correcting improper counter operation

307234, G06M 312

Patent

active

046690980

ABSTRACT:
A counting circuit includes a digital counter for counting the pulses of an input signal during a counting interval and a pair of digital latches for latching the binary state of the input signal at the beginning and end of the counting interval, respectively. The latched binary states of the input signal and the pulse count of the digital counter are evaluated by an interpreter such as logic circuitry or a microprocessor. The interpreter resolves the pulse count into half clock cycles by comparing the binary states and in response adjusts the pulse count by the addition or subtraction of half a clock cycle.

REFERENCES:
patent: 4554674 (1985-11-01), Sakai et al.
patent: 4600845 (1986-07-01), McKenna, Jr.

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