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Low complexity video decoder

A video decoder and variable technology, applied in the field of video decoding, can solve the problems of insufficient decoding capability and high power consumption of portable electronic devices

Inactive Publication Date: 2011-09-28
MEDIATEK INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when a manufacturer's R&D team is designing such a portable electronic device, many problems can arise
For example, in cases where the algorithms used to decode the encoded data are very complex and / or the video program is of very high resolution, the decoding capability of the portable electronic device may not be sufficient
In another example, when one or more processing circuits in a portable electronic device are operating at the highest available operating frequency, the power consumption may be very high

Method used

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Embodiment Construction

[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. The "comprising" mentioned in the description and the claims is an open term, therefore, it should be interpreted as "including but not limited to". Furthermore, the term "coupled" herein includes any direct and indirect means of electrical connection. Therefore, if it is described that the first device is coupled to the 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] Please refer tofigure 1 , figure 1 is a schem...

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Abstract

A low complexity video decoder includes: a fast variable length decoding (VLD) and inverse quantization module arranged to perform fast VLD and inverse quantization on an input bit stream to generate inverse quantization results; an inverse transform unit arranged to perform inverse transform on the inverse quantization results to generate inverse transform results; a motion compensation module arranged to perform motion compensation according to the input bit stream and generate associated prediction outputs; an arithmetic unit arranged to sum up the inverse transform results and the prediction outputs to generate compensated outputs; a reconstructed frame output unit arranged to generate reconstructed frames according to the compensated outputs; and a frame storage arranged to store some reconstructed frames. The low complexity video decoder operates in accordance with a resolution of the reconstructed frames, rather than a resolution of a plurality of original frames represented bythe input bit stream.

Description

technical field [0001] The present invention relates to video decoding, and in particular to low complexity video decoders. Background technique [0002] When an end user uses a home theater system to watch a video program at home, the coded data of the video program is decoded to be displayed on a display panel of the home theater system, and the decoded result of the coded data can be Zooms in or out to fit the size and resolution of the display panel. In general, a decoding device for a home theater system can easily decode encoded data, no matter how complex the algorithm used to decode the encoded data, and regardless of the resolution of the video program. [0003] It would be very convenient for an end user to have a portable electronic device such as a mobile phone or a personal digital assistant that can be used to watch the same video program anywhere. However, when a manufacturer's R&D team is designing such a portable electronic device, many problems may arise....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/26H04N7/50
CPCH04N7/26329H04N19/00533H04N19/00121H04N21/43637H04N7/26106H04N7/50H04N7/26111H04N19/00781H04N19/00206H04N7/26335H04N7/26202H04N21/234363H04N7/465H04N19/00127H04N19/00563H04N19/00757H04N19/13H04N19/61H04N19/132H04N19/156H04N19/48H04N19/44H04N19/59
Inventor 林建良谢芳易张胜凯雷少民
Owner MEDIATEK INC
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