1
David F Sorrells, Michael J Bultman, Robert W Cook, Richard C Looke, Charley D Moses Jr, Gregory S Rawlins, Michael W Rawlins: Wireless local area network (WLAN) technology and applications including techniques of universal frequency translation. ParkerVision, Sterne Kessler Goldstein & Fox PLLC, May 30, 2006: US07054296 (248 worldwide citation)

Frequency translation and applications of same are described herein, including wireless local area network (WLAN) applications such as IEEE Standard 802.11 WLANs. Such applications include, but are not limited to, frequency down-conversion, frequency up-conversion, enhanced signal reception, unified ...


2
David F Sorrells, Michael J Bultman, Robert W Cook, Richard C Looke, Charley D Moses Jr: Method and system for down-converting electromagnetic signals. Parkervision, Sterne Kessler Goldstein & Fox P L L C, May 9, 2000: US06061551 (153 worldwide citation)

Methods, systems, and apparatuses for down-converting an electromagnetic (EM) signal by aliasing the EM signal are described herein. Briefly stated, such methods, systems, and apparatuses operate by receiving an EM signal and an aliasing signal having an aliasing rate. The EM signal is aliased accor ...


3
Jeffrey L Parker, David F Sorrells, John D Mix, Richard P Daber: Remote tracking system for moving picture cameras and method. ParkerVision, Arthur G Yeager, November 7, 1995: US05465144 (135 worldwide citation)

The system includes a mobile remote unit sensitive to infrared (IR) signals transmitted by a base or stationary unit and an IR transmitter which is placed behind a rotating lens whose position at any time is known with precision resulting in the IR signal being "scanned" across an area. The remote u ...


4
Robert W Cook, Michael J Bultman, Richard C Looke, Charley D Moses Jr, David F Sorrells: Integrated frequency translation and selectivity. ParkerVision, Sterne Kessler Goldstein & Fox P L L C, April 11, 2000: US06049706 (117 worldwide citation)

Methods and apparatuses for frequency selectivity and frequency translation, and applications for such methods and apparatuses, are described herein. The method includes steps of filtering an input signal, and down-converting the filtered input signal. The filtering and the down-conversion operation ...


5
David F Sorrells, Michael J Bultman, Robert W Cook, Richard C Looke, Charley D Moses Jr, Gregory S Rawlins, Michael W Rawlins: Method and system for down-converting and up-converting an electromagnetic signal, and transforms for same. ParkerVision, Sterne Kessler Goldstein & Fox PLLC, November 2, 2004: US06813485 (117 worldwide citation)

Methods, systems, and apparatuses, and combinations and sub-combinations thereof, for down-converting and up-converting an electromagnetic (EM) signal are described herein. Briefly stated, in embodiments the invention operates by receiving an EM signal and recursively operating on approximate half c ...


6
David F Sorrells, Michael J Bultman, Robert W Cook, Richard C Looke, Charley D Moses Jr: Method and system for frequency up-conversion. ParkerVision, Sterne Kessler Goldstei & Fox P L L C, July 18, 2000: US06091940 (112 worldwide citation)

A method and system is described wherein a signal with a lower frequency is up-converted to a higher frequency. In one embodiment, the higher frequency signal is used as a stable frequency and phase reference. In another embodiment, the invention is used as a transmitter. The up-conversion is accomp ...


7
Michael J Bultman, Robert W Cook, Richard C Looke, Charley D Moses Jr, David F Sorrells: Method and system for ensuring reception of a communications signal. ParkerVision, Sterne Kessler Goldstein & Fox P L L C, May 9, 2000: US06061555 (109 worldwide citation)

The present invention includes a system and method for ensuring reception of a communications signal. A modulating baseband signal with desired information is accepted, and a plurality of redundant spectrums is generated. Each redundant spectrum comprises the necessary amplitude, phase, and frequenc ...


8
Robert W Cook, Michael J Bultman, Richard C Looke, Charley D Moses Jr, David F Sorrells: Integrated frequency translation and selectivity. ParkerVision, Sterne Kessler Goldstein & Fox P L L C, July 16, 2002: US06421534 (107 worldwide citation)

Methods and apparatuses for frequency selectivity and frequency translation, and applications for such methods and apparatuses, are described herein. The method includes steps of filtering an input signal, and down-converting the filtered input signal. The filtering and the down-conversion operation ...


9
Michael J Bultman, Robert W Cook, Richard C Looke, Charley D Moses Jr, David F Sorrells: Method and system for ensuring reception of a communications signal. ParkerVision, Sterne Kessler Goldstein & Fox P L L C, November 11, 2003: US06647250 (104 worldwide citation)

The present invention includes a system and method for ensuring reception of a communications signal. A modulating baseband signal with desired information is accepted, and a plurality of redundant spectrums is generated. Each redundant spectrum comprises the necessary amplitude, phase, and frequenc ...


10
David F Sorrells, Michael J Bultman, Charles D Clements, Robert W Cook, Joseph M Hamilla, Richard C Looke, Charley D Moses Jr, Gregory S Silver: Multi-mode, multi-band communication system. ParkVision, Sterne Kessler Goldstein & Fox P L L C, March 9, 2004: US06704549 (101 worldwide citation)

The present invention is directed toward the transmission subsystem of a multi-mode, multi-band communication system that can transmit and/or receive one or more information signals on one or more transmission frequencies using one or more modulation schemes. According to embodiments of the inventio ...