Parkervision, Inc.

Parkvision, Inc.

Joseph M Hamilla

David F Sorrells

Michael J Bultman

Richard C Looke

Robert W Cook

Charley D Moses, Jr

Gregory S Silver

Charles D Clements

Gregory S Rawlins

Michael W Rawlins

Frequency translation and spread spectrum applications of same are described herein. Such applications include, but are not limited to, unified down-conversion and de-spreading, unified up-conversion and spreading, RAKE receivers utilizing unified down-conversion and de-spreading, and Early/Late receivers utilizing unified down-conversion and de-spreading, and combinations and applications of same. Additionally, applications are included for limiting spectral growth during unified up-conversion and spreading of a baseband signal.

Spread spectrum applications of universal frequency translation

A method and system for directly down-converting FM signals to demodulated baseband information signals that can be used to directly down-convert analog FM signals and digital FM signals to demodulated baseband information signals. In an embodiment, the method includes aliasing an FM signal at an aliasing rate substantially equal to the frequency of the FM signal or substantially equal to a sub-harmonic thereof; adjusting the aliasing rate in accordance with frequency changes on the FM signal to maintain the aliasing rate substantially equal to the frequency of the FM signal, and outputting a demodulated baseband information signal. The method optionally includes compensating for phase delays and/or other characteristics of the loop in order to maintain bandwidth and stability for the loop.

Analog zero if FM decoder and embodiments thereof, such as the family radio service

A receiver having multi-mode and multi-band functionality and capabilities is described herein. The receiver is capable of selectively operating over a plurality of bands and channels. The receiver operates in a plurality of modes, including but not limited to a single band/channel mode, and a multiple band/channel mode. The receiver may form a portion of a transceiver. The transceiver may also include a transmitter. In an embodiment, the transceiver is a family radio service (FRS) unit, although the invention is not limited to this embodiment.

Aliasing communication system with multi-mode and multi-band functionality and embodiments thereof, such as the family radio service

Frequency translation and applications of same are described herein, including RF modem and wireless local area network (WLAN) applications. Such applications include, but are not limited to, frequency down-conversion, frequency up-conversion, enhanced signal reception, unified down-conversion and filtering, and combinations and applications of same.

Automated meter reader applications of universal frequency translation

A method and system is described for several embodiments of a communication system. In a first embodiment, a method and system is described wherein a signal is received and down-converted and wherein power consumption can be characterized as &ldquo;ultra-low.&rdquo; In a second embodiment, a method and system is described wherein undesirable images are rejected in a down-conversion system. In a third embodiment, a method and system is described wherein a signal is transmitted in a highly efficient manner. In one implementation the present invention is used in a family radio system.

Image-reject down-converter and embodiments thereof, such as the family radio service

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 invention, the up-conversion section is implemented using a universal frequency translator (UFT).

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St. Augustine, FL, United States of America

Joseph M Hamilla