Dynamic noise blanker circuit

Telecommunications – Receiver or analog modulated signal frequency converter – Squelch

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

455311, H04B 110

Patent

active

046882650

ABSTRACT:
An FM receiver as used in communciations systems includes a blanking switch for deleting noise pulses and a delay device for delaying the detected pulses so that blanking can occur at the correct time. The circuit receives and detects noise pulses and amplifies them at several gain levels simultaneously. Each amplified pulse which passes a predetermined level causes a trigger signal pulse to be coupled to a ramp generator. The trigger signal pulses are coupled through a combination of flip-flops and voltage controlled switches, and each noise pulse enables a ramp signal of a predetermined maximum but having a rise time which is a function of the detected noise pulse amplitude. The ramp signal length is used to provide blanking switch control signals of an appropriate length to blank out substantially all significant noise pulses.

REFERENCES:
patent: 3241073 (1966-03-01), Hummel
patent: 3284714 (1966-11-01), Battin et al.
patent: 3304503 (1967-02-01), Walker et al.
patent: 3350646 (1967-10-01), Graziano et al.
patent: 3462691 (1969-08-01), McDonald
patent: 3544904 (1970-12-01), Eness
patent: 3623144 (1971-11-01), Fischel et al.
patent: 3699457 (1972-10-01), Wright
patent: 3725674 (1973-04-01), Schaefer et al.
patent: 4143325 (1979-03-01), Kahn
patent: 4334317 (1982-06-01), Beesley
patent: 4335322 (1982-06-01), Tanaka et al.
patent: 4388731 (1983-06-01), King
patent: 4466129 (1984-08-01), Skutta
patent: 4510624 (1985-04-01), Thompson et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Dynamic noise blanker circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

     

Profile ID: LFUS-PAI-O-1122728

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.