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.

Date of Patent:
Dec. 24, 1985

Filed:

Jan. 30, 1984
Applicant:
Inventors:

Guy B Coleman, Northridge, CA (US);

James W Henderson, Woodland Hills, CA (US);

Jacob M Sacks, Thousand Oaks, CA (US);

Assignee:

Hughes Aircraft Company, El Segundo, CA (US);

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ; G06K / ;
U.S. Cl.
CPC ...
3401462 ; 364900 ; 382 36 ;
Abstract

Operating at real-time data rates, the disclosed hardware network generates a signal which closely approximates the Mth-largest of a set of R input data signals. The operational basis of this network is a comparison (121-127) between the input data (101-107) and a monotonically-scanning reference function (110). At that point (140, 150, 160) when the lower (R-M+1) of the inputs have been equaled by an increasing reference, the reference has become the same as the Mth-largest and is used (119b, 165, 170, 175) as the filter output. Analogous operation is achieved with a decreasing reference. When the number R of inputs is odd and M is made equal to ((R+1)/2), the network becomes a real-time median filter.


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