Detection of an identification signal contained within a composi

Communications: radio wave antennas – Antennas – Balanced doublet - centerfed

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

455 30, 178 2208, 375 21, H04K 106, H04L 900

Patent

active

044686676

ABSTRACT:
A system for detecting the presence in a sampled composite signal of an identification signal having a predetermined frequency without falsely recognizing other sharp signal transitions in the sampled signal as the identification signal. The system includes a delay line for delaying the composite signal by one-half the cycle of the identification signal as defined by the predetermined frequency to thereby provide a delayed signal; a bias network for biasing the composite signal to provide a first biased signal that is biased a predetermined differential above the composite signal, and to provide a second biased signal that is biased the predetermined differential below the composite signal; a first comparator for comparing the first biased signal to the delayed signal to provide a first comparison signal that indicates when the delayed signal is above the first biased signal; a second comparator for comparing the second biased signal to the delayed signal to provide a second comparison signal that indicates when the delayed signal is below the second biased signal; and a signal processor for processing the first and second comparison signals to provide a flag signal that indicates when the delayed composite signals both periodically rises above the first biased signal at the predetermined frequency and periodically falls below the second based signal at the predetermined frequency, to thereby indicate detection of the identification signal.

REFERENCES:
patent: 4266226 (1981-05-01), McNaul et al.
patent: 4379206 (1983-04-01), Aoki

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

Detection of an identification signal contained within a composi does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Detection of an identification signal contained within a composi, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Detection of an identification signal contained within a composi will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-879915

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