Method and apparatus for carrying out a non-linear operation on

Details Method and apparatus for carrying out a non-linear operation on Method and apparatus for carrying out a non-linear operation on

1988-09-19

1990-08-14

Chin, Tommy P.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358183, 358 12, 340728, 3647241, H04N 5275

Patent

active

049491776

ABSTRACT:
A digital input signal having a sampling frequency f is interpolated by a factor N, where N is a positive integer, whereby a first digital signal having a sampling frequency Nf is generated. A non-linear operation is carried out on the first digital signal having the sampling frequency Nf and a second digital signal having the sampling frequency Nf is provided. The second digital signal is decimated by the factor N and thereby provides a digital output signal having the sampling frequency f.

REFERENCES:
patent: 3997772 (1976-12-01), Crochiere
patent: 4468708 (1984-08-01), Coleman
patent: 4472785 (1984-09-01), Kasuga
patent: 4520386 (1985-05-01), Asaida
patent: 4531151 (1985-07-01), Hentschke
patent: 4771192 (1988-09-01), Jackson

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