Correlator

Details Correlator Correlator

1986-02-21

1988-05-10

Groody, James J.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358148, 328139, 328110, H04N 508, H04N 510

Patent

active

047439696

ABSTRACT:
An input signal comprising pulses in periodical intervals and being present as a series of digital sampling values is applied to a correlator for generating a correlator output signal which assumes an extreme value in the case of a pulse. The correlator comprises a chain of at least two cascaded delay members, the first of which receives the input signal. A pulse and pulse-free interval, respectively is associated with each delay member of the series, the delay members succeeding each other in the same manner as the pulses or pulse-free intervals occur. All but at most one delay member at the beginning or end of the chain can store just all sampling values of the associated pulse or pulse-free interval. The input signal of the first delay member and the output signals of all delay members are applied to a combination circuit which linearly combines and integrates the signals and forms the output signal of the correlator.

REFERENCES:
patent: 4143396 (1979-03-01), MacKenzie
Taschenbuch Elektrotechnik; "Band 2 Grundlagen der Informationstechnik"; by Eugen Philippow; 1977; p. 171.

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