Adjustable antialias filters

Details Adjustable antialias filters Adjustable antialias filters

1989-01-26

1989-12-26

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358 22, 358180, 358183, 36472417, H04N 713, H04N 5272

Patent

active

048901628

ABSTRACT:
A programmable sampled data subsampling system includes a programmable antialias filter which bandlimits the information bandwidth of the signal to be subsampled in accordance with the subsampling rate. The antialias filter includes a recursive filter which scales and combines input samples and delayed combined samples in proportions of K and (1-K) where K is a variable. The variables K are applied to the recursive filter in repeating sequences of N values of K where N is the subsampling factor. Every N.sup.th combined sample is extracted and provided as the subsampled signal.

REFERENCES:
patent: 4064530 (1977-12-01), Kaiser et al.
patent: 4472733 (1984-09-01), Bolger
patent: 4646138 (1987-02-01), Willis
patent: 4656516 (1987-04-01), Fling et al.
patent: 4717951 (1988-01-01), Fling
patent: 4827343 (1989-05-01), Naimpally

Affiliated with

Also associated with

Rating

Adjustable antialias filters does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1579868