Intra predictor structure in multimode video decoder

A video decoder and predictor technology, applied in the field of multimedia video, can solve the problems of poor flexibility, large area, and low cost, and achieve the effects of small circuit area and power consumption, good flexibility, and simple structure

CN102348114BActive Publication Date: 2013-12-04北京中科微投资管理有限责任公司
5 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2013-12-04

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses an intra predictor structure in a multimode video decoder. The structure comprises: a programmable control unit, a programmable processing unit and a reconstruction unit. The programmable control unit completes a loading and control operation of a reference pixel and outputs a reference pixel value and control information to the programmable processing unit. The programmable processing unit completes interpolation prediction of the pixel and outputs a predicted value and positional information to the reconstruction unit. The reconstruction unit completes reconstruction of the pixel. In the invention, a programmable mode is used and is compatible to all the intra prediction modes in various kinds of present standards. An area is small, costs are low, flexibility is good and power consumption is low. Portable mobile applications have strict restrictions to the area, the costs and the power consumption. By using the structure, the above problem can be solved. And an urgent demand for the multiple-standard compatible structure can be satisfied.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the technical field of multimedia video, in particular to an intra-frame predictor structure in a multi-mode video decoder, which is suitable for applications with strict requirements on area cost and power consumption, especially portable mobile applications. Background technique

[0002] In order to meet people's increasingly extensive digital media application requirements, a series of new-generation video compression coding standards have emerged. The H.264 / AVC standard is a new generation of video compression coding standard jointly formulated by the International Telecommunications Union (ITU-T) Video Coding Experts Group (VCEG) and the International Organization for Standardization (ISO / IEC) Moving Picture Experts Group. AVS is China's independent knowledge The latest generation of audio and video compression coding standards. Therefore, multi-standard compatibility has become a current application requirement. [0003...

Examples

Embodiment Construction

[0034] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0035] The intra-frame predictor structure in this multi-mode video decoder provided by the present invention utilizes a dedicated programmable core, and the arithmetic processing unit only includes a 16-bit accumulator and a 16-bit barrel shifter. The 8-bit micro-instruction set realizes flexible reconfiguration of different data paths in a programmable way.

[0036] 1. Its structure includes a programmable control unit, a programmable processing unit and a reconstruction unit. Intra prediction includes two processes - the reference pixel loading process and the interpolation prediction process. The two have significantly different characteristics. The former mainly performs memory access and control operations, while th...