Switchable divider
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United States of America Patent
Stats
-
Apr 29, 1980
Grant Date -
N/A
app pub date -
Apr 13, 1978
filing date -
Apr 13, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A frequency divider circuit is selectively operable for providing an output signal characterized by a first frequency or a second frequency equal to one-half the first frequency. An input signal at the first frequency is supplied to the clock terminal of a D-type flip-flop and a stream of control pulses, developed in synchronism with the input signal, are selectively coupled by a logic circuit to the set terminal of the flip-flop. The D and Q terminals of the flip-flop are coupled together forming an output for providing a signal at the first frequency in response to the presence of the control pulses and at the second frequency in response to the absence of the control pulses.
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