1
Wilfred Andre Maria Snijders, Nicolaas Alphonsus Maria Verhoeckx, Petrus Josephus VAN Gerwen, Hendrik Arie VAN Essen: Modulation and filtering device. U S Philips Corporation, Frank R Trifari, Simon L Cohen, January 11, 1977: US04003002 (145 worldwide citation)

A digital data transmitter is described, whose line carrier frequency need not be an integral multiple of one half the clock frequency of the digital input signal. Use is made of a digital filter for increasing the sampling frequency to a value which is twice the modulator carrier wave frequency.


2
Lambertus Gerardus van Es, Hendrik Arie VAN Essen, Nicolaas Cornelis DE Troye: Digital data transfer system having delayed information readout from a first memory into a second memory. U S Philips Corporation, Frank R Trifari, Daniel R McGlynn, August 2, 1977: US04040027 (38 worldwide citation)

A digital data transfer system having information read-out from a first memory to a user device through temporary storage in an intermediate second memory. The system includes a measuring device which determines the extent to which the second memory is filled with information read-out from the first ...


3
Hendrik Arie Van Essen, Nicolaas Alphonsus Maria Verhoeckx, Wilfred Andre Maria Snijders: Interpolating digital filter with input buffer. U S Philips Corporation, Frank R Trifari, Daniel R McGlynn, December 14, 1976: US03997773 (30 worldwide citation)

A non-recursive interpolating digital filter for generating, output code works, at an arbitrary rational ratio between the input and output sampling frequencies. The input code words are entered and stored in a buffer, and entered into a storage device at predetermined times determined by a controll ...


4
Ludwig Desire Johan Eggermont, Hendrik Arie Van Essen, Petrus Josephus Van Gerwen, Wilfred Andre Maria Snijders: Interpolating digital filter. U S Philips Corporation, Frank R Trifari, Daniel R McGlynn, October 26, 1976: US03988607 (22 worldwide citation)

An interpolating non-recursive digital filter in which the circulating storage device which has a periodically changing storage time, is controlled by a clock-pulse generator, and has an output circuit whereby within one input sampling period the input code words stored in the storage device are sup ...


5
Wilfred Andre Maria Snijders, Nicolaas Alphonsus Maria Verhoeckx, Petrus Josephus Van Gerwen, Hendrik Arie Van Essen: Digital signal processing arrangement. U S Philips Corporation, Frank R Trifari, Daniel R McGlynn, October 17, 1978: US04121296 (13 worldwide citation)

Digital signal processing arrangement such as a digital filter for computing output signal samples which are each equal to the sum of products of a given plurality of pairs (for example N) of input signal samples. One of the input signal samples of the pair is, for example, formed each time by a sam ...


6
Petrus Josephus van Gerwen, Hendrik Arie VAN Essen, Wilfred Andre Maria Snijders: Apparatus for achieving a predetermined transfer characteristic. U S Philips Corporation, Frank R Trifari, Daniel R McGlynn, June 22, 1976: US03965338 (8 worldwide citation)

A pulse switched digital multiplier for matching transfer characteristics of digital processes having a plurality of pulse switch positions, and a pulse switch setting circuit which, under the control of a setting code from a setting program, sets the pulse switch to a given one of the pulse switch ...


7
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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