analog video 中文意思是什麼
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The first generation armored scout cars of our army only had the ability of receiving and storing the analog video signal because of the limitation of technologies
我軍的第一代偵察車已經實現了以圖像為載體的情報獲取以及存儲。 -
The subject has mainly finished designing and debugging software and hardware of a / d decode module, fpga video processing module, video data frame deposit module, base clock produce module, d / a encode module, i2c bus control module, etc. a / d decode module gathers analog tv signals and realize video decode ; fpga video processing module deals with the data after decoding and produces systematic logic control signal ; video data frame deposit module offers the buffering area to a large n umber of high - speed video data ; base clock produce module through input basic video signal offers system accurate relevant synchronous signal ; under control of video processing module d / a decode module convert digital video data into compound tv signal which can be shown in tv directly ; i2c bus control module is used to initialize the chip of system by simulating i * c bus timing
本課題主要完成了a d解碼模塊、 fpga視頻處理模塊、視頻數據幀存模塊、基準時鐘產生模塊、 d a編碼模塊、 i ~ 2c總線控制模塊等部分軟、硬體設計及調試。其中a d解碼模塊採集模擬電視信號實現視頻解碼； fpga視頻處理模塊對解碼后的數據進行去噪處理的同時還負責系統的邏輯控制；視頻數據幀存模塊為大量高速的視頻數據提供緩沖區；基準時鐘產生模塊通過輸入基準視頻信號為系統提供精確的相關同步信號； d a編碼模塊在視頻處理模塊的控制下把數字視頻數據轉換成復合電視信號供顯示用： i ~ 2c總線控制模塊模擬i ~ 2c總線時序實現對系統中編、解碼晶元的初始化。 -
In this system, the movement of the step - electromotor is controlled by computer, and then the dial pointer is drove by the step - electromotor. at the same time, these images of the analog instrument are took by high precision ccd video, and then these images will be processed by the computer, using some image - processing algorithms such as image segmentations, threshold identification, image binarization, areas labeling, dial center - point identification, useful areas identification & abstracting, and areas thinning, etc. followed this, the dial pointer of the “ circle ” is able to be located. at last, the dial pointer position will be recognized by the computer
本系統由計算機控制步進電動機的運動，進而驅動指針式儀表表針的運動，並且通過高精度ccd攝像機實時獲取表盤圖像數據，同時進行表盤圖像的相關處理，包括圖像分割，閾值確定，圖像二值化，區域標記演算法，圓心擬合，有效區域識別提取，區域細化等，最終快速識別出表盤指針所處位置;最後，根據國家指針式儀表類檢定規程所制定的演算法計算出該儀表的相關誤差，檢定指針式儀表的各種精度，通過這些數據判斷該儀表是否合格，列印該儀表的檢定結果報表。 -
As the advancement of tv technology, the receiver of digital television ( digital tv set - top box ) will face to a wide developing space. at the mean time, the digital video recorder will substitute the analog video recorder with the people ' s increasing demand of the recording quality
隨著數字電視技術的發展，數字電視接收機? ?數字電視機頂盒將面對一個廣闊的發展空間；同時，數字錄放機隨著人們對節目存儲要求的逐步提高也漸漸呈現出取代模擬錄放機的勢頭。 -
It ' s the tide that the digital video system will gradually replace the analog one acted as the standard of a new generation
數字視頻系統有一種逐漸替代模擬系統的趨勢，並將成為新一代標準。 -
Mega - hz ~ 100mega - hz, hr analog video, k - m bit rate
1兆赫茲~ 100兆赫茲，高分率頻比視頻， 1千比特~ 1兆比特。 -
First an analog video signal is decoded by saa7 11 a to form a digital video signal complying with ccir6o1 which then is compressed by an special chip ibms42o, at last, the video es is packed with audio es to form ts by computer
具體來說，是把模擬視頻源解碼成符合ccir601規范要求的數字視頻源，經專用的mpeg2編碼晶元壓縮形成視頻es流送入計算機，與一路音頻es流打包復用后形成一路ts流。 -
This paper focuses on the research and implementation of these six key techniques. firstly, this paper researches the international standards for compression of digital video data, analyses how to compress analog video stream to mpeg - 4 with hardware. it is also involved in the techniques of net transmit of digital video data, such as net protocol, ip multicast, rtp / rtcp and so on
本文主要是對智能視頻監控系統關鍵技術的研究與實現，主要體現在以下幾個方面: 1 、在視頻數據的壓縮方面，研究與分析了視頻壓縮的標準以及對mpeg - 4壓縮標準做了簡單的介紹，並分析了mpeg - 4的硬體實現方式，即使用硬體編碼晶元vw2010將視頻信號轉換為mpeg - 4格式的視頻流。 -
Compared with analog video decoder, digital video decoder has advantage of smaller area and higher quality, and offers better source for video processor
數字視頻解碼器給視頻處理電路提供了高質量的數字信號源，相比模擬解碼器，具有面積小、質量高的優點。 -
Analog video bandwidth
模擬視頻帶寬 -
Traditional analog video supervise system have evolution to digital video supervise system
目前視頻監控已由模擬視頻監控過渡到了數字視頻監控系統。 -
And then, expatiate the digital video and analog video elements and several factors that can affect the video definition
闡述了數字視頻和模擬視頻原理，以及影響圖像清晰度的各種因素。 -
The early analog video surveillance system must be replaced by the digital video surveillance system, which will be largely used in banks
近年來，數字視頻監控系統是監控領域的一個開發熱點，它必將最終取代早期的模擬視頻監控系統。 -
The " remote sense " returns a low side of load voltage that is impressed on the audio to suppress crosstalk and to provide optimal analog audio and analog video
"遙感"會讓加載在音頻上的電壓負荷回到較低的一端，從而抑制交調失真，達到理想的模擬音頻和模擬視頻效果 -
Digital video is much better than analog video, the development of digital video accelerates the development of multimedia, video communication and digital tv
數字視頻比模擬視頻具有多種明顯的優點，它的發展推動了多媒體、視頻通信和數字電視等產業的飛速發展，具有重要的研究意義。 -
Each encoder board can encode 4 ways of video and consists of 4 pieces of tw9903, used to implement analog video ’ s a / d transformation, 1 piece of aq424, used to combine four ways of digital video into one, 1 pieces of ime6400, used to encode digital video into mpeg - 4 code
每個編碼板採用4個tw9903實現4路模擬視頻的a / d轉換， 1個aq424實現數字視頻的四路合成， 1個ime6400實現數字視頻的mpeg - 4壓縮編碼，從而實現4路視頻編碼。 -
On designing of the encoder, by using the decoding for video chip saa7113 made in philips, analog video signal inputted realizes a / d conversion in analog / power block
編碼器的設計中，模擬/電源塊主要實現的功能是對輸入的模擬視頻信號進行a / d轉換，解碼晶元採用philips公司saa7113 。 -
The outputs of the camera are analog video signals, and the pixel points of the image sensor are difficult to synchronize with the acquisition card. therefore the images have low quality, and the resolution is limited
由於攝像機的輸出已轉換成模擬視頻信號方式，且攝像頭傳感器的象素點在輸出時序上很難與採集卡的采樣點一一對應，因此視頻圖像數字化后圖像質量損失較大，圖像分辨力受到限制。 -
A nonlinear analog ( video and audio ) mapping procedure may be purely analog
非線性模擬（視頻和音頻）映射過程可以是完全模擬的。 -
Today, the video supervise system in our country ? ncluding the traditional analog video supervise system and the more advanced video supervise system based on computer video recorder use the axis cable to transmit the video signal from video camera to video recorder
目前國內的視頻監控系統? ?包括傳統的模擬視頻監控系統和較為先進的硬盤錄象機系統，都要用同軸電纜將攝象機輸出的視頻信號送往錄象機。
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