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:
Jan. 13, 2015
Filed:
Oct. 12, 2010
Thomas Richter, Stuttgart, DE;
Thomas Richter, Stuttgart, DE;
Accusoft Corporation, Tampa, FL (US);
Abstract
Methods and apparatus for coding and/or decoding bitplanes are described. Aspects relate to speeding up bitplane coding when one or more entropy coders are used as part of the encoding process. A number, e.g., three, consistent value, e.g., zero value, bitplanes are identified and subjected to coding, e.g., in some embodiments using a JPEG 2000 arithmetic coder. Remaining bitplanes including data are subjected to coding using a second coding process, e.g., an entropy coding process implemented by a JPEG 2000 selective arithmetic bypass coder. By subjecting zero value bitplanes to the coding, e.g., arithmetic coder processing or its equivalent, 3 bitplanes are subjected to fast, easy to implement coding while non-consistent value bitplanes can be coded using selective arithmetic bypass coding. This satisfies the JPEG 2000 requirement that 3 bitplanes be generated in accordance with arithmetic coder processing while avoiding the normal delays associated with processing of non-consistent value bitplanes.