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:
Dec. 02, 1986
Filed:
Mar. 01, 1985
Applicant:
Inventor:
James H Elder, Bedford, VA (US);
Assignee:
General Electric Company, Lynchburg, VA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K / ; H03L / ;
U.S. Cl.
CPC ...
331 / ; 307262 ; 328155 ; 331 16 ; 331 25 ; 332 19 ; 381 97 ;
Abstract
Apparatus and method for programmably phase shifting an audio tone is disclosed for use in a cellular communications system. A digital phase lock loop (PLL) includes a programmable phase shift therewithin and an audio output, phase-shifted from an input audio tone, is extracted from the thus programmed PLL. The apparatus of the present invention is particularly designed to be realized using digital circuits capable of integration into a monolithic CMOS IC.