Recursive type digital filter

Details Recursive type digital filter Recursive type digital filter

1979-11-16

1981-12-08

Smith, Jerry

Boots, shoes, and leggings

364745, G06F 1531, G06F 748

Patent

active

043051332

ABSTRACT:
A recursive type digital filter receiving a digital input signal x(n) having a plurality of bits and delivering a ditial output signal y(n) satisfying the following equation, ##EQU1## where n indicates a natural number, M and N orders of time lag in the signal transference, a.sub.k and b.sub.k coefficients defined by a filter characteristic, a.sub.M and b.sub.N b being coefficients which are not equal to zero, comprises an output control circuit for delivering a digital signal indicating a positive or negative limit value in place of the digital output signal y(n) when the amplitude of the signal y(n) exceeds an allowable value. In combination with this output control circuit, the filter also utilizes a feedback signal for calculation purposes which feedback signal has its amplitude reduced from that of y(n) by a predetermined ratio. Further, an arrangement is provided for clearing registers of filter when necessary to prevent overflow oscillation.

REFERENCES:
patent: 3609568 (1971-09-01), Jackson
patent: 3725687 (1973-04-01), Heightley
patent: 3749895 (1973-07-01), Kao
patent: 3777130 (1973-12-01), Croisier et al.
patent: 4034196 (1977-07-01), Butterweck et al.
patent: 4117541 (1978-09-01), Ali

Affiliated with

Also associated with

Rating

Recursive type digital filter does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-570701