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:
Apr. 26, 1994
Filed:
Jun. 03, 1991
Applicant:
Inventor:
Orville M Eness, Park Ridge, IL (US);
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L / ; H04M / ;
U.S. Cl.
CPC ...
375-1 ; 380-6 ; 380-9 ; 380 34 ; 380 46 ; 380 49 ; 379 61 ;
Abstract
A frequency-hopping cordless telephone system is described which adds digitized audio to a pseudorandom frequency hopping pattern for voice encryption. The randomly selected start point of a very long pseudoramic pattern generator is transferred to the handset by way of an infrared path at each off-hook. In addition, the infrared path is used to synchronize the clocks of the handset and the associated base module when the cordless telephone is in an on-hook position.
Eness, Orville. (1994). Secure cordless radio-telephone (U.S. Patent No. 5307370). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5307370
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile