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:
Dec. 07, 1993
Filed:
Aug. 20, 1992
Applicant:
Inventor:
Sheau-Bao Ng, Cranbury, NJ (US);
Assignee:
General Electric Co., Princeton, NJ (US);
Primary Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
380 19 ; 380 10 ; 380 17 ; 380 14 ;
Abstract
In a system for coding and decoding a digital television signal, a signal representing residual image information is transformed into plural subband signals representing vertical and horizontal frequencies, and quantized. To mitigate the effects of transmission channel errors, the quantized subband signals are scrambled by line shuffling before being data compressed prior to transmission. Inverse operations including decoding, line re-shuffling, dequantization and subband synthesis occur at a receiver.