Automatic FM tuner

Details Automatic FM tuner Automatic FM tuner

1981-08-07

1983-09-20

Bookbinder, Marc E.

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

455169, H03J 724, H03J 728, H04B 126

Patent

active

044060181

ABSTRACT:
In an automatic FM tuner of a voltage synthesizer in which an output from a voltage control oscillator is varied in response to a tuning clock pulse to scan or search a broadcasting frequency wherein when a comparator having an input of the output voltage with S-shaped wave form of FM detector circuit detects that the received broadcasting signal are set in a range of receiving signal with the normal tuning point being set therebetween, a period of the tuning clock pulse is increased, the tuning clock pulses with their periods increased are counted over a range of the received signal, a feeding of the tuning clock pulse is terminated at 1/2 of the counted value, and thereby a variation of the oscillation frequency of the voltage control oscillator is terminated to show a desired tuning frequency.

REFERENCES:
patent: 4216546 (1980-08-01), Litt
patent: 4264976 (1981-04-01), Yamashita

Affiliated with

Also associated with

Rating

Automatic FM tuner does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-591356