Time variable dispersive filter for minimizing ghost interferenc

Details Time variable dispersive filter for minimizing ghost interferenc Time variable dispersive filter for minimizing ghost interferenc

1989-12-29

1992-04-07

Kostak, Victor R.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358905, 358187, H04N 538, H04N 5213

Patent

active

051033127

ABSTRACT:
A video signal transmission system includes a dispersal filter having a variable dispersal characteristic for time dispersing a video signal. The filter is supplied with dispersal coefficients from a ROM for continually varying its dispersal characteristic over each line of the video signal. The low frequency content of the video signal is removed and the resultant high frequency video signal is applied to the dispersal filter. The variably dispersed video signal is combined with data, including a coded representation of the low frequency portion and transmitted. A receiver receives the dispersed signal, removes the data and applies the dispersed signal to an inverse dispersal filter that is supplied with dispersal coefficients from a ROM for providing a complementary (inverse) time dispersal function for recovering the high frequency video signal. The data is decoded and the low frequency portion reconstituted and combined with the high frequency video signal. Ghost signals that are delayed in transmission are subjected to an inverse dispersal function that is not complementary to the function with which the signal was processed at the transmitter and are therefore further dispersed.

REFERENCES:
patent: 4300161 (1981-11-01), Haskell
patent: 4434440 (1984-02-01), Schiff
patent: 4502077 (1985-02-01), Morotomi et al.
patent: 4684989 (1987-08-01), Roeder et al.
patent: 4896213 (1990-01-01), Kobo et al.
patent: 4951146 (1990-08-01), Citta

Affiliated with

Also associated with

Rating

Time variable dispersive filter for minimizing ghost interferenc does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Time variable dispersive filter for minimizing ghost interferenc, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Time variable dispersive filter for minimizing ghost interferenc will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1899517