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. 12, 2007
Filed:
Jul. 28, 2003
Stephen R. Carsello, Plantation, FL (US);
Stephen R. Carsello, Plantation, FL (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A receiver front end () receives a known Stop Waveform () comprising a predetermined symbol pattern on a voice channel, the Stop Waveform sent at the end of a transmission. A processor () coupled to the receiver front end terminates () the reception of the voice channel in response to detecting the Stop Waveform. The processor computes () a plurality of characteristics derived from the received signal, including a carrier-to-noise ratio, a maximum normalized symbol correlation energy over all symbols of the Stop Waveform, and a number of small and a number of large normalized symbol energy values. The processor detects () the Stop Waveform by comparing the plurality of characteristics with a corresponding plurality of predetermined thresholds.