Communication equipment

Details Communication equipment Communication equipment

1977-08-01

1978-10-31

Grimm, Siegfried H.

Oscillators

Automatic frequency stabilization using a phase or frequency...

Afc with logic elements

325421, 325453, 331 25, H03B 304

Patent

active

041237242

ABSTRACT:
A television receiver is provided comprising a variable frequency local oscillator and frequency synthesizer control means for controlling the frequency of the variable frequency local oscillator in accordance with the setting of variable divider means for effecting channel or frequency tuning of said receiver, the frequency synthesis control means comprising first divider means operable on the output of the variable frequency local oscillator, the first divider means being set to one of a plurality of division ratios under the control of fine tuning means associated therewith, variable divider means operable on the output of the first divider means, and phase/frequency comparator means for comparing the output of the variable divider means with a reference frequency and for affording a control signal to the variable frequency local oscillator for controlling its frequency.

REFERENCES:
patent: 3949305 (1976-04-01), McClaskey et al.
patent: 4030045 (1977-06-01), Clark

Affiliated with

Also associated with

Rating

Communication equipment does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Communication equipment, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Communication equipment will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1837216