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. 13, 1992
Filed:
May. 10, 1991
Applicant:
Inventors:
Jeffrey Bernstein, Marblehead, MA (US);
Bernd Girod, Boston, MA (US);
Xiancheng Yuan, Bedford, MA (US);
Assignee:
PictureTel Corporation, Peabody, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H09N / ;
U.S. Cl.
CPC ...
358136 ; 358135 ;
Abstract
A method and apparatus for transmitting a sequence of image frames by encoding interframe error data features the steps of compiling a spatially decomposed image of a background of the sequence of image frames, spatially decomposing a warped image of a previous frame, and spatially decomposing a new input image. The spatially decomposed input image is compared with the spatially decomposed background image and with the spatially decomposed warped image. An error signal defining the spatially decomposed input image is generated based on these comparisons.