The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 29, 1999
Filed:
Aug. 20, 1997
Bryan Taylor, Waterloo, CA;
Mihal Lazaridis, Waterloo, CA;
Peter Edmonson, Hamilton, CA;
Perry Jarmuszewski, Guelph, CA;
Lizhong Zhu, Waterloo, CA;
Steven Carkner, Waterloo, CA;
Matthias Wandel, Waterloo, CA;
Research In Motion Limited, Ottawa, CA;
Abstract
A wireless radio modem for incorporation into a host system includes radio frequency modulation/demodulation circuitry employing electronic device elements that operate in a frequency range that minimize the RF interference between the radio modem and the host system. Radio modem power conservation is further maximized by 1) simplifying signal modulation processing by use of a single sideband suppressed carrier waveform transition table, thereby reducing processing requirements; and 2) incorporating a 'sleep mode' feature in which all non-timer circuitry is powered-down when not in use.