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:
Sep. 25, 2001
Filed:
Nov. 01, 1999
Craig J. Morande, Coral Springs, FL (US);
David L. Ellis, II, Coconut Creek, FL (US);
Motorola Inc., Schaumburg, IL (US);
Abstract
A non-predictive tone-coded-squelch (TCS) frequency determination method of scanning a plurality of radio frequency channels in a radio receiver and determining the presence of a standard tone-coded squelch frequency on the radio frequency channel (,) that includes determining a mathematical average of a plurality of subaudible tone samples from a radio frequency channel (,) and then removing out-lying samples that differ from the mathematical average by some predetermined amount (,). A determination is made if the number of remaining samples is at least some predetermined percentage of the total samples taken (,) and a predictive tone-coded squelch detector is used to monitor for a standard tone-coded squelch frequency nearest to the a frequency corresponding to the mathematical average of the remaining samples (,) if the number of remaining samples is at least some predetermined percentage of the total samples taken. The receiver then returns to the standard tone-coded squelch frequency if detected by the predictive detector (,).
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile