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Rockwell Collins : Patent Issued for Optical Analog-To-Digital Conversion System and Method with Enhanced Quantization

07/23/2014 | 06:40pm US/Eastern

By a News Reporter-Staff News Editor at Defense & Aerospace Week -- Rockwell Collins, Inc. (Cedar Rapids, IA) has been issued patent number 8779955, according to news reporting originating out of Alexandria, Virginia, by VerticalNews editors.

The patent's inventors are Zanoni, Raymond (Columbia, MD); Jepsen, Kim S. (Elliott City, MD); King, Oliver S. (Frederick, MD).

This patent was filed on September 25, 2012 and was published online on July 15, 2014.

From the background information supplied by the inventors, news correspondents obtained the following quote: "Analog-to-digital conversion techniques are used in a wide variety of applications. Communications and sensing devices frequently use analog-to-digital conversion to convert an analog signal to a digital signal. High speed analog-to-digital conversion is utilized in radio frequency (RF) receivers used in military, commercial and consumer applications. Products that utilize analog-to-digital signal conversion include, but are not limited to: electronic intelligence (ELINT) receivers, cell phones, wireless local area components, radars (e.g., synthetic aperture radar (SAR)), sensors, high frequency (e.g., 100 megahertz (MHz) and multi-Giga Hertz (GHZ)) systems, etc.

"Optical or photonic analog-to-digital converters (pADC) can reduce the size, weight, and power requirements of the systems in which they are employed. The pADC generally includes at least one electronic analog-to-digital converter (eADC). The eADC is generally a high resolution ADC which adds to the size, weight and power usage of the pADC.

"Accordingly, there is a need for an analog-to-digital conversion system and method configured for reduced size, cost, weight and/or power consumption. Further still, there is a need for an improved photonic analog-to-digital converter (pADC) system and method. Yet further, there is a need for an ADC with optimized quantization. Still further there is a need for a pADC that does not require a high resolution eADC. There is further a need for a pADC system and method that is less susceptible to optical clock amplitude changes. There is further a need for pADCs that uses one or more low resolution eADCs.

"It would be desirable to provide a system and/or method that provides one or more of these or other advantageous features. Other features and advantages will be made apparent from the present specification. The teachings disclosed extend to those embodiments which fall within the scope of the appended claims, regardless of whether they accomplish one or more of the aforementioned needs."

Supplementing the background information on this patent, VerticalNews reporters also obtained the inventors' summary information for this patent: "One exemplary embodiment relates to an apparatus including a phase modulator, a photonic processor, a first comparator, a second comparator and at least one logic circuit. The phase modulator is configured to receive a first signal and a first optical pulse signal. The phase modulator is configured to provide an optical phase-modulated pulse signal. The photonic processor is configured to receive the optical phase-modulated pulse signal and the optical pulse signal and to provide an electronic first demodulated signal and an electronic second demodulated signal. The first comparator is configured to receive the electronic first demodulated signal and provide a first compared signal, and the second comparator is configured to receive the electronic second demodulated signal and provide a second compared signal. At least one logic circuit is configured to receive the first compared signal and the second compared signal.

"Another exemplary embodiment relates to a conversion method. The method includes providing a phase-modulated optical signal and an optical pulse signal, phase delaying the optical pulse signal to provide a first delayed signal, and combining and converting the phase-modulated optical signal and the optical pulse signal to provide an electronic first demodulated signal. The method also includes combining and converting the phase-modulated signal and the first delayed signal to provide an electronic second demodulated signal, comparing the electronic first demodulated signal to a first threshold to provide a first compared signal, comparing the electronic second demodulated signal to a second threshold to provide a second compared signal, and using the first compared signal and the second compared signal to provide a data signal.

"Another exemplary embodiment relates to a converter. The converter includes a phase modulator and a photonic processor. The phase modulator is configured to receive a first radio frequency electronic signal and an optical pulse signal. The phase modulator is configured to provide an optical phase-modulated pulse signal. A photonic processor comprises a balanced photo detector or a pair of photo detectors. The pair of photo detectors or the balanced photo detector is configured to receive the optical phase-modulated pulse signal and the optical pulse signal and to provide an electronic demodulated signal.

"Another exemplary embodiment relates to a method. A method includes providing a phase-modulated optical signal and an optical pulse signal, and phase delaying the optical pulse signal to provide a first delayed signal. The method also includes combining and converting the phase-modulated signal and the optical pulse signal to provide an electronic first demodulated signal. The method also includes combining and converting the phase-modulated signal and the first delayed signal to provide an electronic demodulated signal. The method also includes a data signal in response to the electronic first and second demodulated signals."

For the URL and additional information on this patent, see: Zanoni, Raymond; Jepsen, Kim S.; King, Oliver S.. Optical Analog-To-Digital Conversion System and Method with Enhanced Quantization. U.S. Patent Number 8779955, filed September 25, 2012, and published online on July 15, 2014. Patent URL: http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=8779955.PN.&OS=PN/8779955RS=PN/8779955

Keywords for this news article include: Aerospace and Defense Companies, Rockwell Collins, Rockwell Collins Inc.

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC

(c) 2014 NewsRx LLC

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