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. 24, 1991
Filed:
Jan. 11, 1990
Applicant:
Inventor:
David E Lake, Jr, Grass Valley, CA (US);
Assignee:
The Grass Valley Group, Inc., Nevada City, CA (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G09G / ;
U.S. Cl.
CPC ...
340700 ; 364731 ;
Abstract
Special effects using polar image coordinates produce a new class of television special effects, such as spherical mapping and kaleidoscope effects. Rectangular coordinates for an input image are converted into polar coordinates, and the polar coordinates are mathematically manipulated according to the desired special effect. The modified polar coordinates may be applied directly to the rectangular coordinates to produce modified rectangular coordinates that represent the desired special effect, or they may be converted back into rectangular coordinates as the modified rectangular coordinates.