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:
Apr. 09, 1991
Filed:
Mar. 06, 1990
Applicant:
Inventors:
Assignee:
Rai Radiotelevisione Italiana, Turin, IT;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
358105 ; 358135 ; 358136 ;
Abstract
A redundancy reduction algorithm, such as hybrid DCT, is applied to a video signal and is subsequently encoded by pixel blocks, and motion vectors are generated for each image block. At least one global motion vector is then generated for the entire image, the block motion vectors are substracted from the global vector to obtain local motion vectors representing the shifts from the global vector, the global vector is encoded with fixed length, the local vectors are encoded with variable length, and the coded global vector and the coded local vectors are multiplexed into the coded video signal to be transmitted.