Apparatus and method for buffering context arrays referenced for performing entropy decoding upon multi-tile encoded picture and related entropy decoder

A technology for buffering devices and encoding pictures, which is applied in the field of entropy decoders and can solve problems such as increasing production costs

Active Publication Date: 2014-05-28
MEDIATEK INC
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Since conventional decoder designs use tile scan order to decode multi-tile coded pictures, vertical buffers (column buffers) are required for the currently decoded dependent tiles because of the tile scan order. Buffering decoding information of LCUs / Treeblocks of neighboring image blocks next to the vertical boundary (e.g., left vertical boundary) also inevitably increases the production cost

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  • Apparatus and method for buffering context arrays referenced for performing entropy decoding upon multi-tile encoded picture and related entropy decoder

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[0024] Certain terms are used in the description and claims to refer to particular elements. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. The specification and claims do not use the difference in name as a way to distinguish components, but use the difference in function of components as a criterion for distinguishing. "Includes" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". In addition, the term "coupled" herein includes any direct and indirect means of electrical connection. Therefore, if it is described that a first device is coupled to a second device, it means that the first device may be directly electrically connected to the second device, or indirectly electrically connected to the second device through other devices or connection means.

[0025] image 3 is a schematic diagram illustrating an entropy d...

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Abstract

A buffering apparatus for buffering context arrays of a multi-tile encoded picture having a plurality of tiles includes a first buffer and a second buffer. The first buffer is arranged to buffer a first context array referenced for performing entropy decoding upon a first tile of the multi-tile encoded picture. The second buffer is arranged to buffer a second context array referenced for performing entropy decoding upon a second tile of the multi-tile encoded picture. When the first tile is currently decoded according to the first context array buffered in the first buffer, the second context array is buffered in the second buffer.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to: US Provisional Application No. 61 / 553,350, filed October 31, 2011; US ​​Provisional Application No. 61 / 566,984, filed December 5, 2011. The subject matter of these related applications is hereby incorporated by reference. technical field [0003] The disclosed embodiments of the present invention relate to decoding a multi-block video / image bitstream which conveys a plurality of multi-block encoded pictures / compressed frames each having a plurality of blocks, particularly a buffer referenced for multiple Apparatus and method for entropy-decoded content array of video block coding picture and related entropy decoder. Background technique [0004] As mentioned in the High-Efficiency Video Coding (HEVC) specification, a picture can be divided into multiple tiles. figure 1 A plurality of image blocks used in the high-efficiency video coding specification are shown. figure 2 draw ...

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Application Information

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IPC IPC(8): H04N19/17H04N19/513
CPCH04N19/00484H04N19/00533H04N19/00951H04N19/91H04N19/172H04N19/174H04N19/423H04N19/44
Inventor郑佳韵张永昌
OwnerMEDIATEK INC