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:
Feb. 15, 1994

Filed:

Apr. 05, 1993
Applicant:
Inventor:

Gang Fang, Salt Lake City, UT (US);

Assignee:

Other;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
348 97 ; 352-1 ; 348373 ; 348 64 ; 348692 ;
Abstract

A system is disclosed for electronically processing negative composite video signals, wherein the negative composite video signals correspond to a negative image as produced by the projection of negative photographic film. The negative composite video signals are converted to positive composite video signals. The entire portion of the negative composite video signal between adjacent horizontal blanking portions is electronically inverted. The horizontal blanking portions of the negative composite video, which include the color burst signal, are not inverted. The composite signal that results includes the blanking portions, having the color burst signal, in their original, unaltered state. The image portion of the resulting composite signal, i.e., the portions of the resulting composite signal between the horizontal blanking portions, is inverted, and the resulting composite video signal is thus converted from negative to positive state.


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Fang, Gang. (1994). Method and apparatus for negative-to-positive video conversion (U.S. Patent No. 5287175). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5287175

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