Electrical pulse counters – pulse dividers – or shift registers: c – Systems – Counter includes circuit for performing an arithmetic function
Patent
1985-03-26
1986-10-21
Heyman, John S.
Electrical pulse counters, pulse dividers, or shift registers: c
Systems
Counter includes circuit for performing an arithmetic function
H03K 2500
Patent
active
046189696
ABSTRACT:
The invention is concerned with a digital ratemeter comprising a count difference circuit for adding input pulse signals and subtracting the frequency of the divider pulse, an integrator for integrating positive or negative count values from the count difference circuit, a feedback unit for receiving an integral count value from the integrator as input, thus generating a divider pulse frequency, and performing exponential transformation of the divider pulse frequency, whereby the integral count value is a count rate output and a fixed measurement accuracy in the overall range is attained.
REFERENCES:
patent: 3311868 (1967-03-01), Cupp et al.
patent: 3354267 (1967-11-01), Crater
patent: 3435196 (1969-03-01), Schmid
patent: 4255793 (1981-03-01), Nakamura
patent: 4525675 (1985-06-01), Richmond et al.
A Digital Linear Ratemeter, C. H. Vincent and J. B. Bowles Nuclear Instruments and Methods, 22 (1963), pp. 201-202 and Circuit Diagram.
A Digital Decimal Pulse Ratemeter, M. Werner Nuclear Instruments and Methods, 34 (1965), pp. 103-105.
Badono Shinji
Tsutaka Yoshikazu
Heyman John S.
Mitsubishi Denki & Kabushiki Kaisha
Ohralik Karl
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