Method and apparatus for monitoring frequency synthesizer lockin

Details Method and apparatus for monitoring frequency synthesizer lockin Method and apparatus for monitoring frequency synthesizer lockin

1997-05-14

1999-11-09

Chin, Stephen

Pulse or digital communications

Repeaters

Including pulse regeneration or conversion

4551921, 455265, 331 1R, H04L 2564, H04B 118, H04B 106, H03L 700

Patent

active

059828129

ABSTRACT:
A frequency synthesizer circuit comprises a controller, a synthesizer and a voltage controlled oscillator are used to generate an oscillating signal in response to external commands. The synthesizer provides a lock detect signal to the controller when the synthesizer detects that the oscillating signal has reached a desired frequency following application of a load signal. A first timer, a second timer, and a counter are adapted to receive the load signal and the lock detect signal. The first timer provides a first measurement corresponding to an amount of time between the load signal and a first receipt of the lock detect signal. The second timer provides a second measurement corresponding to an amount of time between the load signal and a final receipt of the lock detect signal. The counter provides a count value corresponding to a total number of times that the lock detect signal is received inclusive of the first receipt and the final receipt of the lock detect signal. A memory device is coupled to each of the first timer, second timer, and counter, which has a data storage portion for storing the first measurement, second measurement and count value.

REFERENCES:
patent: 4409688 (1983-10-01), Baker
patent: 5471661 (1995-11-01), Atkinson
patent: 5686864 (1997-11-01), Martin et al.

Affiliated with

Also associated with

Rating

Method and apparatus for monitoring frequency synthesizer lockin does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for monitoring frequency synthesizer lockin, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for monitoring frequency synthesizer lockin will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1466255