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Jr Madison G Nicholson

Bio: Jr Madison G Nicholson is an academic researcher. The author has contributed to research in topics: Signal & Radio receiver design. The author has an hindex of 6, co-authored 14 publications receiving 98 citations.

Papers
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Patent
15 Dec 1951

17 citations

Patent
13 Nov 1944
TL;DR: A signal seeking receiver as mentioned in this paper is a receiver in which the tuning instrumentality is motor driven, and the motor is set into a fixed position in the receiver, such that the signal is received by the motor.
Abstract: 'his invention relates to signal seeking receivers, and more particularly to signal seeking receivers for frequency modulated signals. A signal seeking receiver, as the term is used herein, means a receiver in which the tuning instrumentality is motor driven, in which the motor is set into...

16 citations

Patent
06 Oct 1945
TL;DR: In this article, the authors proposed a radio receiving device for signal-seeking or stop-on-carrier (SOC) devices with push-button tuning, and arranged to operate on either amplitude modulated (A. M.) or frequency modulated(F. M) signals.
Abstract: This invention relates to radio receiving apparatus, and more particularly to radio receiving apparatus of the "signal-seeking" or "stop-oncarrier" type provided with push button tuning, and arranged to operate on either amplitude modulated (A. M.) or frequency modulated (F. M.) signals. This...

12 citations

Patent
21 Jul 1944
TL;DR: In this paper, a duplex control circuit is proposed to control a transmitter which may operate with one of a number of different characteristics; that is to say, the transmitter may be controlled from two different keying positions.
Abstract: This invention relates to duplex control circuits, and more particularly to, such circuits as may be employed to control a transmitter which may operate with one of a number of different characteristics; that is to say, the transmitter may be controlled from two different keying positions I...

11 citations

Patent
28 Mar 1944
TL;DR: In this article, a method and apparatus for remotely controlling the deflection in a cathode ray tube, particularly in respect of angles or sectors to be observed, is described, which is of particular utility and value in connection with radar.
Abstract: This invention relates to a method and apparatus for remotely controlling the deflection in a cathode ray tube, particularly in respect of angles or sectors to be observed; and while capable of application for a number of purposes, is of particular utility and value in connection with radar...

9 citations


Cited by
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Journal ArticleDOI
TL;DR: The WHYN, Hush-Up, BLADES, F9C-A/Rake, CODORAC, and ARC-50 systems are featured, along with a description of the prior art in secure communications, and introductions to other early spreadspectrum communication efforts.
Abstract: This monograph reviews events, circa 1920-1960, leading to the development of spread-spectrum communication systems. The WHYN, Hush-Up, BLADES, F9C-A/Rake, CODORAC, and ARC-50 systems are featured, along with a description of the prior art in secure communications, and introductions to other early spreadspectrum communication efforts. References to the available literature from this period are included.

309 citations

Patent
05 Sep 1972
TL;DR: In this paper, a processing circuit determines the presence of a transistion in the video signal and, through the use of delay line chains, averages the chroma signals from a plurality of preceding time points up to the center of the transition.
Abstract: The relatively long rise and fall time of narrow-bandwidth television chroma signals is sharply reduced by the use of a processing circuit using the corresponding luminance signal as a control. The processing circuit determines the presence of a transistion in the video signal and, through the use of delay line chains, averages the chroma signals from a plurality of preceding time points up to the center of the transition, and then switches to average the chroma signal from a plurality of subsequent time points. The thus averaged chroma signals exhibit a very rapid rise time which results in a much sharper color transition in the picture than the unprocessed video signal can produce.

33 citations

Patent
19 Nov 1951

21 citations

Patent
25 Jun 1952

20 citations