video codec 中文意思是什麼
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Design and implementation of jpeg2000 hd video codec
2000編解碼器的設計與實現 -
At the same time, the author studied the mpeg - 4 video codec algorithm, transplanted the mpeg - 4 video decoder to the blackfin processor and did lots of optimization work
同時研究了mpeg - 4視頻編解碼演算法，將基於mpeg - 4的視頻解碼器移植到blackfin處理器上並進行了大量的優化工作。 -
The implementation and optimization of h. 263 video codec based on tm
1300上的實現與優化 -
As the latest standard in video codec field, h. 264 has such advantage as high compression rate, strong erroe resilience capacity, highly adaptability and so on
作為視頻編解碼領域的最新標準， h . 264具有壓縮率高、差錯恢復能力強、適用范圍廣等優點。 -
For video codec, after analyzing and researching the newest standard h. 264, an efficiency algorithm was proposed in this paper using self - feature, spatial correlation and temporal correlation to judge the encoding mode of one macro - block. through this method, the best prediction mode can be obtain before encoding, then, the coding time can be reduced dramatically with a little expense of bit - rate. for video transmission, in this paper, a transmit method was proposed using tcp / ip protocol under the environment of local networks
首先，在分析及研究最新的視頻編碼標準h . 264的基礎上，利用宏塊自身的特點和其時間、空間的相關性來判斷宏塊應該採用的編碼模式，從而提前得到該宏塊的最佳編碼模式，新方法有效地克服了原標準演算法中窮舉式的復雜演算法，在壓縮碼流只有少許增加的情況下，大幅度地提高了幀內及幀間編碼的速度。 -
Through the interface between the card and pc, the control infomation and dsp compression stage etc. can be conveniently notified. the simulation statistics indicates that the design mentioned in the paper can be conveniently and effectively appllied to the image processing card to accomplish the functions of the dataflow controls such as i2c operation 、 image transform parameter data transmission 、 sdr - sdram controller 、 pc - fpga communication, dsp video codec etc
驗證結果表明，本文所述的系統方案設計可以方便的應用在基於pc104總線的高解析度圖像處理系統中，並能有效完成i2c配置、 pc - fpga交互通信， fpga對sdr - sdram高速讀寫控制， dsp對圖像進行壓縮等系統功能。 -
In addition, the paper discuss the video data over stream - media and illustrates how the mpeg - 4 asp video codec data is transferred on the lans or internet in real - time mode and development of a application of real - time video data communication sysytem
本文還討論了網路流媒體的原理和應用，研究了一種適合網路視頻流傳輸的視頻編碼模型，該系統可以廣泛應用於網路視頻傳輸系統中。 -
The main research objects of our paper are software implement method of h. 263 video codec and development technology of dsp system
本文的主要研究對象是基於dsp的h . 263視頻編碼器的軟體實現方法和dsp系統的開發技術。 -
The promotion ability of those products are bad, and cannot satisfy the the rapid development of audio and video codec technology
目前大多數ip機頂盒產品採用硬體解碼的方式，這種產品的升級能力差，已經不能滿足當今音視頻編解碼技術的飛速發展。 -
Being the base of all kings of video applications and services, video codec became an important area of multimedia technique research
視頻編碼技術是多媒體技術的研究熱點之一，也是各種視頻應用和視頻服務的基礎。 -
In this paper, a thorough study is carried out over the key algorithms of distortion constrained video codec, several optimization methods are proposed to enhance the coding speed and promote the applications of video coding in actual practice
為了進一步提高編碼速度，促進視頻編碼技術在多媒體通信領域的實際應用，本文對限失真視頻編碼的關鍵演算法進行了深入的研究並提出了多種優化方法。 -
So video optimized error resilience techniques are necessary due to the nature of video codec
因此視頻數據需要較優的錯誤恢復技術來克服視頻編解碼的先天缺陷。 -
Introduces operation principle and interface circuit design of video codec adv611. 3
介紹了新一代視頻編解碼晶元adv611的工作原理和介面電路設計。 -
Based upon the conditions described above, we have designed a video codec system using dsp which can encode and decode h. 263 or mpeg - 2 video stream
基於以上情況，我們開發了一套基於dsp實現的視頻編解碼器，它能按照h 263協議或mpeg - 2協議進行編解碼。 -
We are developing advanced ip core of system lsi for digital av application, such as a video codec and an audio codec, with high performance, high quality, small size and low power consumption
我們正從事數字影音產品先進ip核的開發，例如高性能、高質量、小尺寸和低功耗的視頻編解碼器和音頻編解碼器。 -
Second, some techniques in the digital surveillance system, including audio and video codec. tcp / ip protocol and ip multicasting, are introduced in the paper. at the same time, the trimedia are referred to, which is a powerful media signal processor and used in the system largely, and the programming api is specified, too
其次，論文介紹了數字監控系統中所涉及的部分技術，包括音視頻編解碼、 tcp ip協議和ip多播，並簡要概述了用於數字監控系統中的多媒體處理晶元trimedia的特點和編程api 。 -
As the information era proceeds, highly developed digital image processing technique and communication technique make multimedia communication possible, and it is now on the way of progress. video conference have received more attention as an example of multimedia. in this paper we first describe the construction and characteristic of the video conference system and analyze the theory of protocol with itu - t h. 323 recommendation which inculde video and audio codec standard, communication control protocol h. 245. call signalling protocol h. 225, as well as procedures within these protocols define how these components communicate. also an experimental video conferencing system is designed and some relating key technologies are studied, which include multithread programming, transmission technology, mcu technology, qos mechanism and so on. especially, a video codec based on h. 263 recommendation with high fram rate as well as high compression ratio is researched and implemented because of importance of video application, which solves the bad image reconstrction quality problem existed in the most present video systems that adopt h. 261 video compression algorithm. by using these technologies. a video conferencing system is implemented based on lan. the system that the paper provides is easy to implement and the results of exmperiment is good. such system can be widely used in the fields such as business conference, distance education etc. and it is of good practical value
隨著信息時代的前進，數字圖像處理技術和通信技術的高度發展，多媒體通信已成為可能並已初具規模，視頻會議作為它的一個具體應用實例受到普遍關注。本文首先對國際電信聯盟itu - t制定的基於分組交換的多媒體通信h . 323系列建議進行了闡述，其中包括ip網路視頻會議系統的結構組成、視頻傳輸標準、音頻傳輸標準、系統的信息碼流、通信控制協議h . 245和呼叫信令協議h . 225以及會議系統的進行過程。在此基礎上給出了ip視頻會議的實現的整體框架，為系統的軟體實現進行了模塊的劃分和整體設計，分析了各個模塊的功能、作用。 -
And now, all before - mentioned application regions will be unified by h. 264 standard. studying h. 264 video codec technology becomes pop region in world, design for video capturing and encoding system based on h. 264 is essential technology of video communication and video monitoring and personal video recorder ( pvr ) system, and is a portion of ip - video - phone and video monitoring project of changhong company too
研究h . 264視頻編解碼技術已為世界的熱點，基於h . 264的視頻採集與編碼系統的設計，是以h . 264基礎的視頻通信、視頻監控和個人視頻錄像機（ pvr ）的共性技術，是長虹公司視頻通信、視頻監控和個人視頻錄像機（ pvr ）項目的重要組成部分。 -
It, besides video encoder, consist of a video codec terminal
目前itu已經有不少視頻壓縮的標準，如h -
In this paper, a thorough study is carried out over the key algorithms of mpeg - 4 video codec, several optimization methods are proposed to enhance the coding speed and promote the applications of video coding in actual practice
視頻壓縮技術是視頻處理的基礎，隨著網路流媒體、無線視頻等新的應用的出現，人們不斷對視頻壓縮編碼技術提出新的更高的要求。
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