Arithmetic decoding device, image decoding device, arithmetic coding device, image coding device, and arithmetic decoding method

US9525876B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-9525876-B2
Application numberUS-201214354946-A
CountryUS
Kind codeB2
Filing dateOct 31, 2012
Priority dateNov 4, 2011
Publication dateDec 20, 2016
Grant dateDec 20, 2016

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Abstract

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The amount of processing is reduced with high coding efficiency maintained. There is provided an arithmetic decoding device including syntax decoding means for decoding each of at least a first syntax element and a second syntax element indicating a transform coefficient using arithmetic decoding with a context or arithmetic decoding without a context. The syntax decoding means performs decoding that at least includes not decoding the first syntax element and decoding the second syntax element using the arithmetic decoding without a context, and decoding the first syntax element using the arithmetic decoding with a context and decoding the second syntax element using the arithmetic decoding without a context.

First claim

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The invention claimed is: 1. An arithmetic decoding device for arithmetically decoding coded data of a transform coefficient obtained by performing a frequency transform on a target image for each unit region, comprising: syntax decoding circuitry that decodes a first syntax element and a second syntax element that indicate the transform coefficient; wherein the first syntax element is decoded by using arithmetic decoding with a context or arithmetic decoding without a context,…

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What does patent US9525876B2 cover?
The amount of processing is reduced with high coding efficiency maintained. There is provided an arithmetic decoding device including syntax decoding means for decoding each of at least a first syntax element and a second syntax element indicating a transform coefficient using arithmetic decoding with a context or arithmetic decoding without a context. The syntax decoding means performs decodin…
Who is the assignee on this patent?
Sharp Kk
What technology area does this patent fall under?
Primary CPC classification H04N19/60. Mapped technology areas include Electricity.
When was this patent published?
Publication date Tue Dec 20 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
What related patents are in patentsdb?
We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).