Frequency locked-loop using a microcontroller as a comparator

Details Frequency locked-loop using a microcontroller as a comparator Frequency locked-loop using a microcontroller as a comparator

1995-12-21

1998-01-06

Grimm, Siegfried H.

Oscillators

Automatic frequency stabilization using a phase or frequency...

With intermittent comparison controls

331 2, 331 17, 331 23, 331 25, 332100, 332127, 375275, 375307, 455343, H03L 7085, H03C 309, H04L 2712

Patent

active

057059551

ABSTRACT:
A frequency-locked loop (100) employs a controllable oscillator (102) for generating an output signal having a frequency, optional sampler (104), coupled to oscillator (102), for sampling the frequency of the output signal, a divider (106), coupled to optional sampling circuit (104), for dividing the output signal frequency to generate a prescaled signal and a microprocessor (108), coupled between the divider 106 and oscillator (102), for comparing the prescaled signal to a reference signal and generating a control signal for correcting frequency shifts based upon the comparison. The control signal generated by microprocessor (108) is non-continuous. During that time when microprocessor (108) generates no control signals, power is removed from various frequency-locked loop circuitry.

REFERENCES:
patent: 4707670 (1987-11-01), Dakin
patent: 4743864 (1988-05-01), Nakagawa et al.
patent: 4906944 (1990-03-01), Frerking
patent: 5041798 (1991-08-01), Moorman et al.
patent: 5216374 (1993-06-01), George et al.

Affiliated with

Also associated with

Rating

Frequency locked-loop using a microcontroller as a comparator does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Frequency locked-loop using a microcontroller as a comparator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Frequency locked-loop using a microcontroller as a comparator will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2332504