PLL circuit of pulse swallow-type prescaler system

Details PLL circuit of pulse swallow-type prescaler system PLL circuit of pulse swallow-type prescaler system

1995-06-07

1997-06-17

Sikes, William L.

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Phase shift by less than period of input

331 25, 331 1A, H03H 1116

Patent

active

056401167

ABSTRACT:
A PLL circuit of the pulse swallow-type prescaler system prevents erroneous module count operations such as are caused by a delay in the module signal, without the need to use a device which operates at high speeds or a device of large power. In a synthesizer of the pulse swallow-type prescaler system, a PLL circuit has a PLL COUNTER circuit and a module pulse generating circuit and a prescaler circuit has a prescaler counter, an extender circuit and a module control circuit which outputs a module control signal MO, for controlling the module operation, upon sensing the logic state of the module pulse generating signal MK, which is output by the module pulse signal generating circuit in response to the output signal MD of the PLL counter circuit.

REFERENCES:
patent: 4414687 (1983-11-01), Hirata

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