1
Theodoor Antonius Carel Maria Claasen, Johannes Bernhard Heinrich Peek: Cross-correlation arrangement. U S Philips Corporation, Frank R Trifari, Henry I Steckler, July 11, 1978: US04100378 (26 worldwide citation)

Cross-correlation arrangement for determining the presence or absence of a signal x.sub.2 (t) of known frequency in an unknown signal x.sub.1 (t) if this signal x.sub.2 (t) is present for at least a period of time .tau..sub.o with an unknown starting instant. An auxiliary signal a.sub.1 (t) is added ...


2
Hans Jurgen Butterweck, Theodoor Antonius Carel Maria Claasen, Wolfgang Friedrich Georg Mecklenbrauker, Johannes Bernhard Heinrich Peek: Digital signal processing device with quantizer. U S Philips Corporation, Frank R Trifari, Daniel R McGlynn, July 5, 1977: US04034196 (26 worldwide citation)

A digital signal processing device of the recursive type, such as a recursive digital filter or a digital oscillator, comprising a storage device for storing at least one first code word related to an output code word, multiplying means for multiplying said first code word by a given weighting facto ...


3
Theodoor Antonius Carel Maria Claasen, Wolfgang Friedrich Georg Mecklenbrauker, Johannes Bernhard Heinrich Peek: Recursive digital filter. U S Philips Corporation, Frank R Trifari, Daniel R McGlynn, December 14, 1976: US03997770 (14 worldwide citation)

Recursive digital filter comprising at least two digital delay devices, a multiplying device having two inputs which are coupled to one another in a common branch point, a summing device from which a sum signal is derived the magnitude of which is at least equal to the sum of the output signal of th ...


4
Wolfgang Friedrich Georg Mecklenbrauker, Petrus Josephus VAN Gerwen, Wilfred Andre Maria Snijders, Theodoor Antonius Carel Maria Claasen, Hendrik Arie Van Essen: Apparatus for achieving predetermined transfer characteristics. U S Philips Corporation, Frank R Trifari, Daniel R McGlynn, August 31, 1976: US03978323 (2 worldwide citation)

An apparatus for producing a predetermined transfer characteristic of information-containing signals, comprising clock means for generating a clock pulse, input means for supplying digital representations of said information-containing signals; coefficient generator means for supplying a first train ...



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