Pre-frame-comb as well as pre-line-comb partial-response filteri

Television – Format – Including additional information

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

348473, H04N 708

Patent

active

055636640

ABSTRACT:
BPSK modulation of suppressed carrier in quadrature with a video carrier amplitude-modulated by composite video signal is used for transmitting a serial-bit digital signal, which is subjected both to "pre-line-comb" and "pre-frame-comb" partial-response filtering prior to conversion to BPSK modulating signal. The "pre-frame-comb" partial-response filtering of the serial-bit data is done on a continuous basis, rather than transmitting frames of the BPSK twice, once in positive logic and once in negative logic, during successive pairs of consecutive frames of the NTSC television signal. This results in the full luminance bandwidth below chroma frequencies being available on average for the transmission of BPSK, rather than half that bandwidth.

REFERENCES:
patent: 5029003 (1991-07-01), Jonnalagadda
patent: 5053860 (1991-10-01), Tsinberg
patent: 5063446 (1991-11-01), Gibson
patent: 5134464 (1992-07-01), Basile et al.
patent: 5229847 (1993-07-01), Gibson
patent: 5287180 (1994-02-01), White
patent: 5430487 (1995-07-01), Naimpally
patent: 5448299 (1995-09-01), Yang et al.
patent: 5461426 (1995-10-01), Limberg et al.
T. C. Leslie and B. Singh, "An Improved Sigma-Delta Modulator Architecture", 1990 IEEE Symposium on Circuits and Systems, 90 CH 2868-8900000-0372, pp. 372-375.

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

Pre-frame-comb as well as pre-line-comb partial-response filteri does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Pre-frame-comb as well as pre-line-comb partial-response filteri, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pre-frame-comb as well as pre-line-comb partial-response filteri will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-60946

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