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:
Nov. 11, 1986
Filed:
Feb. 25, 1985
Applicant:
Inventor:
Douglas L Whiting, South Pasadena, CA (US);
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04B / ; H04B / ; H04M / ;
U.S. Cl.
CPC ...
455 58 ; 379 58 ;
Abstract
Evenly distributed channel use and prevention of interference are achieved in a two-way communications system by using an ID code transferred between a pair of associated units such as a base and a portable telephone. The number of the first channel to be used, and the step value used for determining an alternate channel in case the first channel is being used by a second pair of units, are obtained from the ID code in such a manner as to prevent both pairs of units from switching to the same new channel.