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. 04, 2001
Filed:
Dec. 12, 1995
Applicant:
Inventors:
Robert Norman Hurst, Jr., Hopewell, NJ (US);
Jungwoo Lee, Princeton, NJ (US);
Assignee:
Thomson Licensing S.A., Boulogne, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N 7/32 ;
U.S. Cl.
CPC ...
H04N 7/32 ;
Abstract
Video signal compression apparatus generates residues representing pixel value differences between predicted and real pixel values of a current frame of a video signal. Noise reduction circuitry, in the form of nonlinear processing functions, attenuates lower amplitude residues greater than higher amplitude residues and is responsive to a noise estimate. The processed residues are transformed to provide a compressed video data output. The nonlinear processing functions attenuate noise and reduce image distortion.