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:
Oct. 19, 1982
Filed:
Sep. 22, 1980
Applicant:
Inventor:
Charles Soulliard, Tucson, AZ (US);
Assignee:
Midian Electronics, Inc., Tucson, AZ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04M / ;
U.S. Cl.
CPC ...
179 / ; 455 36 ; 328 14 ;
Abstract
A digitally synthesized tone encoder and automatic number identification generator for a radio-telephone is presented herein. The system includes a tone burst generator for producing two audio tones simultaneously in response to either a keypad input or sequencing of a multiplexer providing a single-pole eight-throw switching function in response to the incrementing of a counter.