幀緩存器 的英文怎麼說
中文拼音 [zhènghuǎncúnqì]
幀緩存器
英文
frame buffer-
A new bit rate control strategy with both global pre - allocation and local segmentation ( glas ) for low bit rate application is proposed. first, it allots bit date to every frame in advance according to possessive rate of buffer, and then distribute different quantization parameters according conctete detail. by means of this method, buffer is controlled more particularly. and the quality of decoded image is improved, the traditional video image coding method, that is to say, the intraframe coding based on dct and the interframe prediction coding based on motion compensation, is not suitable for low bit rate compression and aside from this, the encoder is too complicated
它首先在總體上根據緩存器的佔有率給每幀預分配比特數，然後再根據具體細節給予不同的量化參數。使緩存器得到了更細致的控制，解碼圖像的質量有所改善。針對傳統的視頻圖像編碼方法，即幀內基於dct的編碼加幀間基於運動補償的預測編碼存在不適于低比特率壓縮，編碼器復雜等不足，討論了基於3 - ddct的xyz視頻圖像壓縮編碼方法，提出了3 - ddct系數的三維「 z 」形掃描方案，大大提高了編碼效率。It eliminates the need for agent blocks to have specific knowledge of ram array behind it. it takes care of protocols and latencies in an effort to simplify memory access by the agent blocks. agent blocks " see " a single linear frame buffer, all paging and bank swapping is handled by the and is transparent to the agent blocks
在嵌入式系統晶元中高速存儲器介面控制電路是系統必不可少的重要組成部分，由於有了存儲器介面的存在，使得系統內部客戶模塊不必專門了解存儲器本身的復雜特性，而只需關心傳輸協議和一些定義的遲滯參數，在客戶看來存儲器僅僅是一個線性的幀緩沖器，所有的換頁、區段切換都交由介面電路來處理，從而大大簡化了客戶對存儲器操作的復雜度。In order to deal with those problems above, a video surveillance scheme based on dsps was presented, which used high performance dsps to replace pc as central control unit. not only did we realize the hardware circuits of the system, but also we developed it ' s software. furthermore, three essential methods, for instance the data transfer method by extend direct memory access ( edma ), buffer management method by three buffer strategy and optimized data acquire method had been discussed
為了彌補這些不足，論文採用高性能的dsps取代傳統的pc作為核心處理器，設計了一種基於dsps的交通視頻監控系統的圖像處理平臺，詳細的對其硬體實現和軟體調試進行了論述；在這個基礎上分析了視頻圖像採集和處理的流程，討論了一種利用edma的實時后臺傳輸數字視頻方法和三幀緩沖的存儲器管理方法，為系統的實時性提供了保障。
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