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. 04, 1995
Filed:
Mar. 12, 1993
Anurag Bist, Honolulu, HI (US);
Arnaud E Jacquin, New York, NY (US);
AT&T Corp., Murray Hill, NJ (US);
Abstract
A technique for coding color components of video signals wherein a color component of an image signal sequence is filtered into a plurality of subband image signals. One or more pixels of a first subband image signal are coded using one or more bits of a first quantity of bits. The first subband image signal reflects an image structure of a color component of the image signal sequence. The first subband includes low spatial and temporal frequencies of the color component. A second quantity of bits is used for coding one or more pixels of a second subband image signal. This second quantity of bits comprises one or more bits of the first quantity of bits not used in coding pixels of the first subband image signal. One or more pixels of the second subband image signal are coded using one or more of the second quantity of bits. The second subband image signal reflects image object motion information of the color component of the image signal sequence. A third quantity of bits is provided for use in coding one or more pixels of a third subband image signal. The third quantity of bits comprises one or more bits not used in coding either the first or second subband image signals. One or more pixels of the third subband image signal are coded with one or more of the third quantity of bits. The third subband image signal reflects edges of moving image objects, such as horizontal or vertical edges.