Reference-signal generating apparatus

Details Reference-signal generating apparatus Reference-signal generating apparatus

1994-03-02

1995-04-25

Wambach, Margaret Rose

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

Systems

Including structure for detecting or indicating overflow...

377 56, 327 94, H03K 2140

Patent

active

054105820

ABSTRACT:
A reference signal generator that operates in response to a digital control signal has an increased resolving power without the requirement for increasing the basic clock rate or increasing the bit capacity of a down counter by thinning a pulse from the basic clock signal each the down counter overflows so as to adjust the down-counting clock rate of the down counter. The down counter counts the higher-bit data of the digital control signal. The basic clock signal is multiplied by a decoded signal to obtain the adjustment of the down counting clock signal. The decoded signal is obtained by counting the overflow pulses from the down counter and decoding the counter output with the lower-bit data of the digital control signal.

REFERENCES:
patent: 4633183 (1986-12-01), Heatherington
patent: 5228066 (1993-07-01), De Vane
patent: 5270582 (1993-12-01), Brown et al.

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