Frequency-modulated data communications receivers

H - Electricity – 03 – D

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

325/36

H03D 3/00 (2006.01) H04L 27/14 (2006.01)

Patent

CA 1095991

ABSTRACT OF THE DISCLOSURE A frequency modulated-data communications receiver for use in a system where digital signals are used to frequency modulate a carrier is disclosed. Any information loss caused by phase or amplitude distortion is detected automatically in two mutually supplementary arrangements. One supplementary arrangement is in the form of a dynamic distortion corrector including a frequency discriminator and the other is in the form of a static distortion corrector comprising an amplitude demodulator connected in parallel with the frequency discriminator. The outputs of the demodulator and dis- criminator are connected to respective inputs of a change-over switching cir- cuit under the control of an amplitude modulation-analysis device. When this device senses that the amplitude modulation level exceeds a given value it causes switching of a common output to the amplitude demodulator and when an excess frequency modulation level is sensed the common output is switched to the frequency discriminator. The output of the amplitude demodulator is followed by an inverter which operates under control of a polarity integrator to reverse the AM-demodulation product depending on the magnitude of the FM- demodulation product, in the sense to give AM-demodulation of correct polarity.

279691

LandOfFree

Say what you really think

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

Rating

Frequency-modulated data communications receivers 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-modulated data communications receivers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Frequency-modulated data communications receivers will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-174258

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