compression of bandwidth 中文意思是什麼

compression of bandwidth 解釋
帶寬壓縮
  • compression : n. 1. 壓縮；壓緊；濃縮，緊縮。2. 加壓；壓抑。3. （表現的）簡練。4. 應壓試驗。
  • of : OF ＝Old French 古法語。
  • bandwidth : （帶寬）：電纜，鏈路或系統傳輸數據的能力。
  1. ( 5 ) method of bandwidth compression of holographic grating based on discrete spectrum and realization of a 1 / 8 bandwidth compression of holographic grating ( 6 ) holographic stereogram display that can be implemented using cgh and imaging process through capturing sequence parallax images based on result of computed basis fringe

    採用空間頻率域的子采樣，計算了一個8倍的條紋函數壓縮編碼結果，並給出了簡單易行的解碼方式。 6 、利用獲得的基本條紋函數合成了一個基於序列視差圖像的立體圖顯示，實現了三維數據未知的物體的三維全息顯示。
  2. According to the characteristic of ieee 1394 with wide bandwidth, common and real - time, the author put forward ieee 13 94 should be applied into real - time digital video transfer in optics - electronics theodolite. before engineering realization, carried out a video image transfer test on three types of digital video tape recorders and camera with ieee 1394 interface. we found that digital videos without compression transfered under ieee 1394 standard ( transfer from 4. 5m to 100m ), compared with analog videos, have no geometric distortion, and have better luminance, contrast, definition

    作為工程實現前的實驗研究，對三類具有ieee1394介面的數字錄像機和攝像機進行了視頻圖像傳輸實驗，發現無壓縮格式的按ieee1394標準傳輸的數字視頻圖像（傳輸距離從4 . 5米到100米之間） ，較原始模擬視頻圖像在幾何位置信息上沒有衰變，而在亮度、對比度、邊緣清晰度這些方面有明顯的優勢；但是按dvcam壓縮格式（常見于sony公司的系列產品，是5 ： 1的dct幀內壓縮）壓縮的數字視頻圖像，較原始模擬參照圖像有明顯的幾何畸變。
  3. Because mpeg video need more storage space ( though achievements in compression algorithms have decrease it to a reasonable degree ), high transmission bandwidth, low transmission delay and delay jitter ( especially to real - time video ). how to guarantee video transmission qos ( quality of service )

    如何在寬帶ip和atm網路上有效地傳輸mpeg視頻，才能有效地保證視頻傳輸的服務質量參數qos （如延遲、延遲變化等） ，以及用戶終端表示的表現質量參數qop ，一直是近年來學術界研究的熱點。
  4. In this dissertation, the mathematic model of optically controlled phased linearity array is established by basic theory of phased array radar. the problems of instantaneous bandwidth of ocpar and subarray number are researched, the relationship between the excursion of the direction pattern and subarray number, main lobe stretched - out of the direction pattern and bandwidth, side - lobe level of the direction pattern and subarray number, pulse compression and bandwidth, pulse compression and subarray number is analyzed. after corresponding simulations are done, a summary of advantages of ocpar compared with the traditional phased array radar is presented

    針對x波段信號，仔細研究了光控相控陣的瞬時帶寬問題和子陣數問題，分析了光控相控陣列方向圖偏移與信號帶寬及子陣數的關系，光控相控陣列方向圖主瓣展寬與帶寬的關系，方向圖旁瓣電平與子陣數的關系，脈沖壓縮與信號帶寬及子陣數的關系，完成了相應的模擬，通過與普通相控陣的對比，總結出了光控相控陣相對于傳統相控陣的巨大優勢。
  5. There are two parts of the bandwidth use, one is for media data, which can be reduced by effective compression, the other is for controlling information, which is essential to streaming media technology. as the latter occupies too large a part of the bandwidth use, streaming avi files is not practical. the thesis puts forth a system solution to the problem by cutting the index in the controlling information

    媒體流的帶寬佔用分為兩部分：一部分是多媒體數據，此部分主要通過視頻壓縮來控制；另一部分是傳輸、播放控制信息，此部分是實時數據流生成時需要加入的信息，但它佔用帶寬過多造成了avi流媒體實用價值不高，對此本文提出通過去掉avi播放信息中索引項來解決。
  6. Except, the error model of orthogonal modulation and double frequency technology were studied. third, the design and implementation of ultra wide band lfm generator were studied. an ultra wide band lfm pulse compression signal generator with 400mhz carrier and 300mhz absolute bandwidth was developed successful

    ?第三部分在理論分析的基礎上對超寬帶lfm信號源系統的設計和實現技術進行研究，成功研製出了中心頻率為400mhz ，帶寬為300mhz ，重復頻率為1khz ，脈寬為20 s的線性調頻信號。
  7. In order to get high quality voice in spite of low - bandwidth, our system uses several kinds of voice compression algorithms, and it realizes the functions of voice activation and jitter compensation. on the other hand, we use some methods to make voice communication safe. the methods includes : filling traffic, encrypting voice datagram with conventional encryption algorithms ; encrypting session key with asymmetric encryption, multiple authentication

    為了保證通信鏈路不被分析，系統實現了一個通信量填充器；為了對傳輸中的語音數據包進行加密，系統提供了des 、 idea 、 blowfish和keyfile等各種常規加密方法；為了利用對稱加密的快速性和公開密鑰加密的方便性，系統只對會話密鑰進行公開密鑰加密。
  8. Offers a robust form of transmission in the broadcasting industry, using digital compression technology to deliver audio, text, pictures and data by reducing transmission bandwidth requirements, as well as storage requirements and provides digital quality and reliability

    是一種以數碼方式廣播電臺節目的嶄新方法，利用數碼壓縮技術，把音樂訪問和不同類型的電臺節目等資訊，轉化為一系列由二進制數字數元組成的數碼電腦編碼傳送。
  9. The analysis on the method shows that an advantage of wavelet - based video compression coding is that it offers more graceful image degradation at high compression ratios, and it also eliminates the block artifacts seen in dc compression. and it can solve the contradiction between limited bandwidth and infinitude requirements of increasing customers in present communication system

    該系統充分利用人眼的視覺特性來減少幀內和幀間的冗餘信息，能夠消除傳統圖像編碼的方塊效應、蚊子效應等現象實現高壓縮比，高質量的圖像編碼，可較好地解決現行通信系統中有限帶寬與日趨增加的無限用戶需求之間的矛盾。
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