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:
Jul. 17, 2001
Filed:
Sep. 29, 1998
James Philip Andrew, Waverton, AU;
Andrew Peter Bradley, Castlecrag, AU;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A method is disclosed of encoding data including transforming the data into a series of components having different frequency characteristics, said components each including a series of coefficients; encoding said coefficients in a compact form, said coefficients including a binary string and said encoding including providing a first efficient encoding technique to encode the number of leading zeros in said binary string, and rounding said coefficients such that a rounded coefficient does not alter significantly the efficient coding of the leading zeros. Preferably, the rounding can includes discarding a first number of insignificant coefficients and adding one to the more significant coefficients only where the more significant coefficients are not zero. The invention has particular application when utilized in encoding wavelet transformed data and when utilized on image data.