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. 26, 1995
Filed:
Apr. 15, 1994
Farhad Esfahani, Duncan, OK (US);
Gas Research Institute, Chicago, IL (US);
Abstract
The present invention comprises an apparatus and method for substantially canceling impulsive noise from data. Such substantial cancellation is achieved by converting the time-domain data into its corresponding frequency spectrum, such that the impulsive noise threshold can be determined. Once such threshold is determined, all frequency components less than this threshold are canceled with the resulting spectrum being converted back to the time-domain. This substantially impulse free signal can then be substituted into the original signal where the impulsive noise occurs, thus, resulting in a signal having minimally distorted data that is substantially devoid of any impulsive noise. This signal may be further processed by an adaptive filter stage to substantially remove any remaining noise from the signal.