公开(公告)号：US08970405B2

公开(公告)日：2015-03-03

申请号：US13859508

申请日：2013-04-09

Applicant: Certicom Corp.

Inventor： Weicheng Joseph Ku ,  Paul Daniel Imthurn

IPC: H04N19/91 ,  H03M7/40 ,  H04N19/61 ,  H04N19/436

CPC classification number: H03M7/40 ,  H04N19/436 ,  H04N19/61 ,  H04N19/91

Abstract: An entropy decoder and method for decoding code words with an indication of associated probability for each code word. The decoder can be operable to receive code words and the indication of associated probability. A branch node block can be in communication with a leaf node block. The branch node block comprising one or more branch node lookup tables and branch node control logic. The branch node control logic operable to process a code word in the input buffer using a selected table from the one or more branch node lookup tables to obtain leaf node information and a bit count of a code word size, the branch control logic further operable to refresh the input buffer to replace the bit count of the code word size and to make the leaf node information and the table selection available to the leaf node block.

Abstract translation: 一种熵解码器和方法，用于对每个代码字具有相关联概率的指示来对码字进行解码。 解码器可以用于接收码字和相关概率的指示。 分支节点块可以与叶节点块通信。 分支节点块包括一个或多个分支节点查找表和分支节点控制逻辑。 所述分支节点控制逻辑可操作以使用来自所述一个或多个分支节点查找表的所选择的表来处理所述输入缓冲器中的码字，以获得叶节点信息和码字大小的位计数，所述分支控制逻辑还可操作为 刷新输入缓冲区以替换代码字大小的位计数，并使叶节点信息和表选择可用于叶节点块。