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:
Jun. 25, 1985
Filed:
Oct. 12, 1983
Applicant:
Inventor:
William L Rorden, Grass Valley, CA (US);
Assignee:
The Grass Valley Group, Inc., Grass Valley, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03F / ;
U.S. Cl.
CPC ...
330258 ; 330 69 ; 330 85 ; 330260 ;
Abstract
A differential input receiver having normal and common mode impedance balanced inputs and a common mode rejection ratio approaching infinity is provided. The receiver includes a differential input operational amplifier across which is connected a fixed gain inverting amplifier. The fixed gain, inverting amplifier being connected in a feedback configuration across the differential input amplifier. Additionally, the values and ratios of the various resistors being selected to provide the balanced differential input and the substantially zero common mode gain of the receiver.