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Video signal data encoding system and video signal encoding method

A technology of video signal and coding method, which is applied in the field of video signal coding, and can solve problems such as unimportant computational complexity

Inactive Publication Date: 2006-09-27
MEDIATEK INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As the processing speed of processors will become faster and faster with the evolution of the times, the problem of computational complexity becomes less important, but compression efficiency is still a very important issue

Method used

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  • Video signal data encoding system and video signal encoding method
  • Video signal data encoding system and video signal encoding method
  • Video signal data encoding system and video signal encoding method

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Embodiment Construction

[0025] The invention provides a video signal encoding method and system applied to a battery-powered device. A digital video signal (digital video) can be regarded as a series of still digital images. In the case of continuous playback, it becomes a continuous video signal due to persistence of vision. But without compression, the storage space and bandwidth requirements are very high. If a full-color digital video signal of 640×480, 15 frames per second, and 90 minutes is used, the required bandwidth is 640×480(pixels / frame)×3(bytes / pixel)×15(frames / sec) =13.18MB / sec, and the required storage space is 13.18MB / sec×90×60=69.50GB. Such a large file is obviously not conducive to real-time transmission and reading of data. Therefore, various digital video signal compression technologies have emerged accordingly.

[0026] The MPEG standard ensures that standardized files produced by video signal coding systems can be opened and run on any system equipped with a standard-compliant...

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Abstract

Video encoding methods for battery-powered apparatus are provided. The power level of a battery is detected. One picture type / picture size / picture rate among multiple picture types / picture sizes / picture rates is determined contingent upon the power level. The picture is encoded with the determined picture type / picture size / picture rate.

Description

technical field [0001] The invention relates to video signal coding, in particular to a video signal coding method and system applied to a battery-powered device. Background technique [0002] The performance of video encoding methods is usually measured by compression efficiency. The original purpose of the video signal coding standard was to store movies on optical discs (MPEG-1), and then evolved into broadband / satellite broadcast TV programs (MPEG-2), as well as streaming / downloading video signal content between networks (MPEG-4); limited by bandwidth and storage capacity. The metric focuses on computational complexity, which is especially critical for applications that must be able to encode in real time. Since the processing speed of processors will become faster and faster with the evolution of the times, the problem of computational complexity becomes less important, but compression efficiency is still a very important issue. In new applications, especially handhe...

Claims

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Application Information

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IPC IPC(8): H04N7/26
CPCH04N19/00781H04N19/00127H04N19/0003H04N19/00206H04N19/00036H04N19/00266H04N19/107H04N19/109H04N19/132H04N19/156H04N19/172H04N19/61
Inventor 朱启诚
Owner MEDIATEK INC
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