Boots – shoes – and leggings
Patent
1979-02-02
1980-10-28
Smith, Jerry
Boots, shoes, and leggings
370109, 375 26, 375 34, G06F 1531
Patent
active
042311012
ABSTRACT:
Digital filter for filtering non-uniformly quantised pulse code modulated signals formed by a sequence of code groups x(i), each comprising a polarity bit, a segment number and a mantissa number. This digital filter arrangement comprises a generator which cyclically generates a series of sequentially occurring auxiliary numbers each comprising a polarity bit and an address code; a first storage medium 1 for storing the code groups x(i) and controlled by an address computation circuit 13 to which the auxiliary numbers are applied; a second addressable storage medium 2 to which a segment number s(i-h) a mantissa number m(i-l), supplied by the first storage medium 1, as well as a polarity bit supplied by an exclusive OR-gate 3 are applied as the address code. This polarity bit is derived by gate 3 from the polarity bit p(i-l) of the code groups x(i) and the auxiliary numbers polarity bit. This second storage medium 2 contains positive numbers z.sub.p and negative numbers z.sub.n which represent the expanded values of all possible code groups x(i). A positive number z.sub.p is read from the storage medium 2 if the polarity bit is positive and a negative number is the polarity bit is negative. The numbers read from the storage medium 2 are applied to an accumulator 4 which is coupled to an address code output of the generator 7.
REFERENCES:
patent: 3752970 (1973-08-01), Aaron et al.
patent: 3766546 (1973-10-01), Aaron et al.
patent: 3789392 (1974-01-01), Candiani
patent: 3988606 (1976-10-01), Eggermont
patent: 4125866 (1978-11-01), Van Essen et al.
patent: 4136398 (1979-01-01), Eggermont
Briody Thomas A.
Goodman Edward W.
Smith Jerry
Streeter William J.
U.S. Philips Corporation
LandOfFree
Digital filter arrangement for non-uniformly quantized PCM does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Digital filter arrangement for non-uniformly quantized PCM, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Digital filter arrangement for non-uniformly quantized PCM will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-271881