Electrical pulse counters – pulse dividers – or shift registers: c – Starting – stopping – presetting or resetting the counter – Counter chains with a radix or base other than the number...
Patent
1983-11-02
1986-04-22
Heyman, John S.
Electrical pulse counters, pulse dividers, or shift registers: c
Starting, stopping, presetting or resetting the counter
Counter chains with a radix or base other than the number...
307271, H03K 2138, H03K 2366
Patent
active
045846987
ABSTRACT:
A data processor having an integral timer including a clock generator producing a specific frequency output comprises a counter chain having an input and output thereof for supplying a fixed frequency divide function. A programmable prescaler couples the clock generator output to the counter chain input for providing a predetermined divisor input to the counter chain. A postscaler operates in consonance with the programmable prescaler coupled to the counter chain output for providing a timer output compensated for the predetermined divisor input. In operation, the timer output has a frequency bearing a constant relationship to the clock generator output frequency independent of the predetermined divisor input of the programmable prescaler.
REFERENCES:
patent: 3036223 (1962-05-01), Phillips
patent: 3263174 (1966-07-01), Bjorkman et al.
patent: 3393366 (1968-07-01), Shoop
patent: 3657658 (1972-04-01), Kubo
Rivera David
Sibigtroth James M.
Heyman John S.
Motorola Inc.
Myers Jeffrey Van
Sarli, Jr. Anthony J.
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