幀計數器 的英文怎麼說
中文拼音 [zhèngjìshǔqì]
幀計數器
英文
frame counter-
The bridge can continue push the dvb - c transport stream coming from the receive card to the universal media player to display online. in order to be compatible with the data rate in the bridge, the parser must have these functions : identifying the format of each elementary stream ( es ) ; repacketing the es frames or packets into small samples ; timestamping each sample for decoding and delivery by the arithmetic of getting the pts of an audio frame
音視頻解析器的設計兼容了橋接器對數據推送的速率,在該解析器中通過「解析音視頻基本流」演算法來識別出每一個流的格式、每一幀數據,並對這些數據重新打包成一個個數據sample ,再通過「音頻pts的獲取」演算法給這些sample打上正確的「 directshow 」時間戳,最後在相應的輸出pin上進行發送。Mainly discuss the choice of gateway hardware platform, specifically introduced the programming of the gateway, the operate of can controller, the design of can data send and receive programming, network programming and the multi - task programming with emphasis
軟體設計介紹了交叉開發環境keiluvision2ide的設置和調試手段,給出了對can控制器的操作、 can數據幀處理程序設計、網路編程,其中重點討論了嵌入式多任務程序的設計。Further investigated and analyzed composition structure and flow data that dsa ' s formation of image is systematic at first in this paper, carried on intact summing up to the data in the system, having given out the plan of design of high speed and large capacity data channel of digital formation of image system of x - ray ; deeper discussion of control way on sdram, give solution that many pieces of sdram works togetherses of realizing heavy capacity, designing of heavy capacity deposit board realize storing at a high speed to vision data by frame on the basis of this ; through further investigations of interface of pci bus, optimize back end state machine design and urge procedure making with lower, giving intact pci interface scheme that realize high speed dma data transmission and satisfy request of video transmitting ; further investigate the figure systematic design method of programmable logic devices, due to the difficult point of drifting about of enabled signal in fifo in common use and setting up and keeping of output signal, method has been proposed of improving stability of system making use of signal utilizing the phase locking ring in fpga to offer a lot of clocks to move thus realize coordinating the data between every module of system to transmit at a high speed by making use of fifo
本文首先對數字減影血管造影( dsa )成像系統的組成結構和數據流向進行了深入研究和分析,並對系統中的數據流向進行了完整的歸納和總結,給出了x線數字成像系統中的高速大容量數據通道的設計方案;在對sdram的控制方式做了深入探討后,給出了實現大容量多條sdram共同工作的解決方案,在此基礎上設計了大容量幀存板實現對圖象數據進行高速存儲;通過對pci總線介面的深入研究,優化後端狀態機設計和低層驅動程序開發,給出了完整的pci介面方案實現高速dma數據傳輸,完全可以滿足視頻傳輸要求;深入研究了基於大規模可編程器件的數字系統設計方法,針對通用fifo使能信號漂移、輸出數據難于建立和保持等設計難點,提出了利用fpga中的鎖相環提供多個時鐘相移的信號來提高系統穩定性的解決方案,從而實現利用fifo來協調系統各模塊之間的數據高速傳輸。The characteristic of h. 264 standard can be concluded mainly into three aspects. it is more practicable, more adaptive to ip net and mobile system and it improves the key components of coding structure based on hybrid video coding framework. for example, it adds coding mode decision, multi frame prediction, context - based adaptive variable length coding ( cavlc ), 4x4 integer transform, loopfilter, etc. the improvement in performance leads to higher computational complexity in the new standard
H . 264的技術特點可以歸納為三個方面,一是注重實用;二是注重對移動和ip網路的適應;三是在混合編碼器的基本框架下,對其主要關鍵部件都做了重大改進,如多模式運動估計、幀內預測、多幀預測、基於內容的變長編碼、 4 4二維整數變換等。The real time server is described first, which emphasizes on some key points such as entry control, the design of data frames and cache control. it shows the effect of data compressing to the progress of multimedia application vigorously
在實時服務器端的解說中,闡述了接入控制、數據幀設計、緩沖控制等技術的關鍵點,並展示了數據壓縮技術的發展對多媒體應用的巨大推動作用。Fpga design and implement of frame synchronous scheme in digital multiplexer system
的數字復接系統幀同步器設計與實現In this thesis, the principle of polarized light wave transmit in optical fiber is researched, i. e. principle of ternary optical fiber communication is researched. based on the researches, the construction of ternary codes optical end machine and 3b2t optical end machine used in two - state fiber net are designed. the construction and component of circuits in 3b2t optical ( called sign converter circuit - scc ) are designed particularly, including : the clock synchronization module, the data synchronizing, code converting module, frame managing module and error exam and managing module
本文研究了線偏光波動理論以及在光纖中的傳輸原理,研究了三值光通信系統原理和器件原理;在此基礎上,設計了三值光端機和在現有兩值光纖網中實現三值光通信的3b2t三值光端機的組成結構,詳細設計了3b2t三值光端機的電路組成部分(稱為電信號變換電路scc ) ,包括:時鐘同步模塊、數據同步模塊、碼元變換模塊、幀處理模塊及差錯檢測和處理模塊;而且在三值光纖通信基礎上,提出了四值光通信的原理和偏分復用的實用化方法。1 ) realization of software packet embedded in m - es and md - is respectively to accomplish main function of mdlp, including assignment of tei ( temporary equipment identifier ), establishment of multiple frame operation, framing, flow control and error - free transmission of packets, is detailed. 2 ) a test model is established to evaluate the robustness and stability of mdlp and verify the validity of software packets. 3 ) according to the design of radio modem construction used in m - es, the modules of interface between data terminal equipment and radio modem are achieved to enable transmission of short message and continuous pseudo - random bit stream via rs232 uart
本文首先概述了蜂窩數字分組數據網的結構和空中協議,詳細分析了移動數據鏈路協議,並在此基礎上,重點敘述了以下方面的工作: 1 )設計並完成了分別應用於m - es和md - is端無線控制器的兩套程序實現數據鏈路層的主要功能,包括分配臨時設備號、建立鏈路、組幀和面向連接的服務保證分組正確無誤地傳輸,並進行適當的流控; 2 )建立測試模型測試移動數據鏈路協議的可靠性和穩定性,證明了程序包的效用; 3 )根據cdpd系統無線數據機的軟硬體總體設計方案,完成了介面模塊,實現了rs232異步串口通信,使用戶可以根據需要發送短消息或連續的偽隨機比特流; 4 )在tms320c54x的軟體、硬體模擬平臺上,建立了cdpd試驗模型,實現了cdpd系統的mdlp基本功能。High - speed frame - synchronizer is an absolutely necessarily key device of the remote sensing satellite ' s ground - receiving system. it is mainly used to format the high - speed data stream, so that computer can get the beginning address of every frame of the high - speed data stream, and then data stream would be send to computer for pretreatment through high - speed interface
高速幀同步格式化器是遙感衛星地面接收系統中必不可少的關鍵設備之一,主要將從衛星接收到的高速數碼流格式化,使計算機得以辨識每一幀的起始位置,然後將數碼流經高速介面進入計算機進行預處理。When the egg - reached signal is sent to pc, through i / o card, the pc drives the video card to capture one frame picture to ram. after a series of mathematical analysis, the pc send the yolk color ' s or egg size ' s grading signals to outer signal delayed controller by i / o card again. last, the controller sends the delayed signals to outer execute equipment to finish classifying
蛋已到達光室的控制信號由數字量i o卡輸入到計算機;計算機通過對埠的查詢獲知這一信號后立刻驅動圖像採集卡將當前光室中的一幀圖像採集到主機內存中,進行相應的計算分析后將光室中鴨蛋蛋芯顏色或大小分級信號再經由數字量輸入輸出卡,送至外部信號延時控制器;控制器將此信號延時後送至外部執行機構,完成分級動作。Because of the complicated flight state of the aircrafts, there rests a critical demand for high speed operation of flight data in the synthetical graphical display system : we must finish all computations of the flight data and send them into the display panel in a very short time which is critically specified by the display instruments
在機載綜合顯示系統中,由於飛行狀態復雜,對飛行數據的處理和顯示都提出了比較嚴格的時間要求:需要在顯示器的一幀時間內完全計算數據並完成顯示任務。因而在工程中,硬體設計的運算速度成為至關重要的因素之一。Four benchmark test sequences was used for the simulation, and the average number of cycles required to process a frame of the proposed architecture and average number of reference memory access required per frame has been computed
本文用四個標準測試序列對所設計結構進行了模擬實驗,統計了該結構平均完成一次塊匹配的時鐘周期和平均處理一幀需對參考塊數據存儲器的訪問次數。( 2 ) data - processing module, its functions is using dsp processor to designdigital filter for the receiving signals, work out the root mean square values and phaseangle, then the phase compensation technique is applied to modify the signals, at lastexport the combining frame data. to data - output module. ( 3 ) data - output module, its functions is transmitting combining frame data toethernet controller, then send the data to the protective device
( 2 )數據處理模塊利用dsp處理器對接收到的數據信號進行數字濾波設計,求出相應的均方根值及相位角,並對信號進行相位補償,最後將數據組幀后傳給數據輸出模塊; ( 3 )數據輸出模塊將組幀后的數據傳送到以太網控制器,繼而發送給二次保護測控設備。Because computing exactitude contrail is completed after the event by shooting range photic measure equipment, better quality track record to image collected by photoelectricity sensor become a very important work it exists the problem of data transmission rate low in the process of storing data to hd from high frame frequency and great array ccd camera
由於靶場光測設備對目標精確軌跡計算的工作要在事後完成,因此對光電傳感器採集到的圖像數據高質量記錄就成為一項極其重要的工作。從電視測量系統的高幀頻、大陣列的數字ccd像機採集並存儲數據到硬盤的過程中,存在數據傳輸速率低不能滿足要求的問題。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。分享友人