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. 01, 1985
Filed:
Sep. 14, 1982
Applicant:
Inventors:
Gary P Baggett, Arlington, TX (US);
Robert D Peterson, Plano, TX (US);
Wayne A Penner, Farmers Branch, TX (US);
Assignee:
Mobil Oil Corporation, New York, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
G06F / ; H03K / ;
U.S. Cl.
CPC ...
364724 ; 3403 / ;
Abstract
An electronic circuit is disclosed wherein a two-stage DC offset filter is provided and implemented serially to coincide with serially implemented seismic data gathers. A first stage corrects the offset in a multichannel system due to amplification stages common to all channels. A second stage includes a circuit for determining the DC offset unique to each channel and compensates for each channel automatically and individually.