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. 14, 1995
Filed:
May. 31, 1994
Applicant:
Inventor:
Eric R Schorman, Bedford, TX (US);
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04Q / ; H04K / ; G07D / ;
U.S. Cl.
CPC ...
379 58 ; 380 23 ; 34082534 ;
Abstract
A system for clone detection within a communication system includes a message generator for generating a message to a subscriber having a first identifier and forwarding the message for transmission over plural communications channels, a memory for receiving and storing a response to the message from each subscriber using the first identifier, and a processor for determining if an unauthorized subscriber is using the first identifier from the stored responses to the message.