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:
Sep. 02, 1986
Filed:
Dec. 27, 1983
Applicant:
Inventor:
Leland T Brown, Phoenix, AZ (US);
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04M / ;
U.S. Cl.
CPC ...
179 / ; 179 / ; 179 / ;
Abstract
A solid state insertion circuit comprising an opto-coupler triac driver is activated by a solid state switch to insert a ringing signal onto a subscriber telephone path in order to ring, for instance, a telephone. The opto-coupler driver functions as a zero voltage crossing triac to apply the ringing signal onto the telephone line only at a zero voltage cross-over thereof to thereby inhibit noise transients from being generated.
Brown, Leland. (1986). Solid state signal insertion circuit and method for use in a telephony (U.S. Patent No. 4609782). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4609782
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile