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. 03, 1985
Filed:
Jul. 29, 1983
Yasuhiko Fujita, Tokyo, JP;
Eiji Masuda, Kawasaki, JP;
Abstract
A differential voltage amplifier comprises a first and second capacitive coupling type amplifiers in each of which an autozeroed mode period for setting an operating point and a signal amplifying mode period for amplifying an input voltage are alternately set up, and the autozeroed mode periods in said first and second amplifier are shifted from each other, first and second mode selector for alternately setting up the autozeroed mode and the signal amplifying mode in the first and second capacitive coupling type amplifiers, first and second signal selectors provided corresponding to the first and second capacitive coupling type amplifiers, the first and second signal selectors alternately selecting a reference voltage and an input signal voltage to apply the selected signal to the first and second capacitive coupling type amplifiers, the first and second signal selectors further selecting the reference voltage corresponding to the autozeroed mode periods of the first and second capacitive coupling type amplifiers and the input signal voltage corresponding to the signal amplifying mode periods, and a selector for selecting the amplified signal output from the first and second capacitive coupling type amplifiers when the first and second capacitive coupling type amplifiers are in the signal amplifying mode.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile