鎮(zhèn)江高色域透性激光電視臺州英皇智能音響工程供應(yīng)-b2b網(wǎng)站_b2b電子商務(wù)平臺【買產(chǎn)品】-上?？谄蚴称酚邢薰?/title><meta name="description" content="場景激光電視的基礎(chǔ)知識：1.分配器：分配器是用來分配高頻信號的部件，它的作用有兩個:一是將一種信號功率平均分配給幾路(通常是分為兩路、三路、四路、六路);二是可將兩路、三路、四路和六路信號混合起來。分配損耗:是指分配器輸入端的輸入電平Ui("><meta name="keywords" content="鎮(zhèn)江高色域透性激光電視,激光電視"><link rel="canonical" href="http://www.cdcfah.com/"/><meta name="applicable-device" content="pc"><link rel="shortcut icon" href="/static/new_net_01/images/favicon.ico"><link rel="stylesheet" href="/static/new_net_01/css/slick.css" /><link rel="stylesheet" href="/static/new_net_01/css/addnew.css"><link rel="stylesheet" href="/static/new_net_01/css/sidenav.css"><link rel="stylesheet" href="/static/new_net_01/css/style.css" /><link rel="stylesheet" href="/static/new_net_01/css/tab.css"><link rel="stylesheet" href="/static/new_net_01/css/404.css"> <meta name="baidu-site-verification" content="OBVzrC9aaQ" /> <meta http-equiv="Cache-Control" content="no-transform" /> <meta 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04:20:19</p><p><span id="click" >瀏覽次數(shù)：0次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="7qxpgsp" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">臺州英皇智能音響工程有限公司</a></p><p><span>聯(lián)系人：</span>張建國</p><p><span>郵箱: </span>705119774@qq.com</p><p><span>電話: </span>13386550111</p><p><span>傳真: </span>13386_</p><p><span>網(wǎng)址: </span>http://www.yhznyx.com</p><p><span>手機(jī): </span>13386-550111</p><p><span>地址: </span>浙江省臺州市仙居縣安洲街道環(huán)城南路1999號大周建材市場8幢131-134/231-234號</p><p>[當(dāng)前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="cbiaseg" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="fjl2dzr" class="box"><p><p style="text-indent:25px">場景激光電視的基礎(chǔ)知識：1.分配器：分配器是用來分配高頻信號的部件，它的作用有兩個:一是將一種信號功率平均分配給幾路(通常是分為兩路、三路、四路、六路);二是可將兩路、三路、四路和六路信號混合起來。分配損耗:是指分配器輸入端的輸入電平Ui(dB)與輸出電平Uo(dB)之差，鎮(zhèn)江高色域透性激光電視。分支器和分配器的根本區(qū)別在于，分配器平均分配功率，而分支器是從電纜中取出一小部分功率提供給用戶，而大部分功率繼續(xù)向后面?zhèn)鬏敗?.串接分支器(串接單元)串接分支器是將分支器和用戶終端合成為統(tǒng)一體，鎮(zhèn)江高色域透性激光電視，具有分支器和系統(tǒng)輸出口的功能，所以叫串接分支器，鎮(zhèn)江高色域透性激光電視，有的又叫串接單元。激光電視是未來電視發(fā)展的主要趨勢。鎮(zhèn)江高色域透性激光電視</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="鎮(zhèn)江高色域透性激光電視,激光電視" src="https://tyunfile.71360.com/UploadFile/yhznyx/637402764205787460/253766.png"></div><p style="text-indent:25px">激光電視的量化：將幅度連續(xù)信號轉(zhuǎn)換為幅度離散的信號，即幅度離散化。激光電視通過采樣，把模擬信號變?yōu)闀r間上離散的脈沖信號。這些脈沖信號的幅度仍然是模擬的，因此還必須對模擬幅度進(jìn)行離散化處理，才能用數(shù)碼來表示其幅值。這種對幅值進(jìn)行分級，并按每級進(jìn)行舍零取整的過程叫作量化。采樣頻率越高，量化比特數(shù)越大，數(shù)碼率就越高，所需傳輸設(shè)施的帶寬則越寬。在目前各廠商生產(chǎn)的數(shù)字化視頻設(shè)備中，較高的量化比特數(shù)是12。激光電視正在走進(jìn)越來越多的家庭，所起到的效用是非常不錯的。鎮(zhèn)江高色域透性激光電視激光電視具備高速處理器和一定的存儲空間。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="鎮(zhèn)江高色域透性激光電視,激光電視" src="https://tyunfile.71360.com/UploadFile/yhznyx/637402764281031671/8466298.png"></div><p style="text-indent:25px">激光電視的采樣：將時間和幅度上連續(xù)的模擬信號轉(zhuǎn)變?yōu)闀r間離散的信號，即時間離散化。電視信號數(shù)字化采樣頻率的選擇首先應(yīng)滿足奈奎斯特抽樣定理，即取樣頻率必須大于信號帶寬的兩倍，才能從采樣信號中完全恢復(fù)原信號。對于數(shù)字分量編碼信號的采樣，CCIR601建議亮度采樣頻率為525/59.94和625/50兩大制式行頻的較小公倍數(shù)2.25MHz的6倍，即13.5MHz。對現(xiàn)行電視制式而言，亮度信號的較大帶寬是6MHz，13.5MHz>2×6MHz=12MHz，所以它符合奈奎斯特定理。而色差信號的帶寬比亮度信號窄得多，所以在分量編碼時兩個色差信號的取樣頻率可以低一些。</p><p style="text-indent:25px">激光電視具體傳輸過程是：由電視臺送出的圖像及聲音信號，經(jīng)數(shù)字壓縮和數(shù)字調(diào)制后，形成數(shù)字電視信號，經(jīng)過衛(wèi)星、地面無線廣播或有線電纜等方式傳送，由數(shù)字電視接收后，通過數(shù)字解調(diào)和數(shù)字視音頻解碼處理還原出原來的圖像及伴音。因?yàn)槿^程均采用數(shù)字技術(shù)處理，因此，信號損失小，接收效果好，沒有模擬電視的雪花、重影現(xiàn)象。頻道利用率高。在原有的8MHz寬帶一個頻道的范圍內(nèi)，可傳送1路高清晰度數(shù)字電視，或者用集束方式傳送2～3套標(biāo)準(zhǔn)清晰度電視以及有關(guān)業(yè)務(wù)數(shù)據(jù)，或加載通信信道。激光電視的智能操作系統(tǒng)、網(wǎng)絡(luò)和其他應(yīng)用程序的應(yīng)用則是通過微處理器來完成的。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="鎮(zhèn)江高色域透性激光電視,激光電視" src="https://tyunfile.71360.com/UploadFile/yhznyx/637402764233531643/3474621.png"></div><p style="text-indent:25px">場景激光電視的基礎(chǔ)知識：分支分配器：（1）分支器：BR一分支符號:INOUT(插入損耗)；A:插入損耗:是信號從干線輸入端到干線輸出端之間的傳輸損耗，即輸入信號電平(dB)與輸出信號電平(dB)之差,用dB表示。B:分支損耗:是信號從干線輸入端到分支輸出端之間的損耗，即干線輸入端電平(dB)與分支端輸出電平(dB)之差,用dB表示。C:分支損耗與插入損耗之間的關(guān)系是:分支損耗大，則插入損耗小;分支損耗小，則插入損耗大。D:分支口與插入損耗之間的關(guān)系是:分支口越多，插入損耗越大。我們實(shí)際上設(shè)計中通常按照2DB來計插入損耗。激光電視可以變身為網(wǎng)頁瀏覽器、全鍵盤輸入、自動更新軟件、下載安裝各類應(yīng)用等。金華高質(zhì)量網(wǎng)絡(luò)激光電視</p><p style="text-indent:25px">激光電視具備全新的遙控裝置，并且可以和各種移動終端鏈接互動。鎮(zhèn)江高色域透性激光電視</p><p style="text-indent:25px">場景激光電視的基礎(chǔ)知識：常用有線電視器材。1、電纜：型號:常用電纜；75-5；75-7；75-9；75-12；發(fā)泡:單護(hù)發(fā)泡、雙護(hù)發(fā)泡；類型:發(fā)泡電纜、耦芯電纜、進(jìn)口電纜；特點(diǎn):頻率越高，損耗越多。2、放大器(高電平放大器、中電平放大器、低電平放大器)；A:高電平放大器用于天線放大器，用戶放大器，增益大在40dB以上，信噪比較差，輸入低60dB；特點(diǎn):低輸入，高輸出；B:中電平放大器用在支干線上，增益在25-30dB，如KA5134，信噪比較好。C:低電平放大器用在主干線上，增益在18-25dB，信噪比較好。鎮(zhèn)江高色域透性激光電視</p><p style="text-indent:25px">臺州英皇智能音響工程有限公司位于浙江省臺州市仙居縣安洲街道環(huán)城南路1999號大周建材市場8幢131-134/231-234號。英皇智能音響致力于為客戶提供良好的家庭影院，JBL音響，激光電視，智能燈光，一切以用戶需求為中心，深受廣大客戶的歡迎。公司注重以質(zhì)量為中心，以服務(wù)為理念，秉持誠信為本的理念，打造家居用品良好品牌。英皇智能音響立足于全國市場，依托強(qiáng)大的研發(fā)實(shí)力，融合前沿的技術(shù)理念，飛快響應(yīng)客戶的變化需求。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2091977.html</p></div></div></div></div></div><div id="vxwtgdk" class="page-right twoColRt"><div id="odvxulx" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="zz84nkw" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img src="http://tyunfile.71360.com/UpLoadFile/2019/11/1/14/637082168864691056_lgpj_5374157.jpg" alt="福建ZF配件哪家強(qiáng) 信息推薦自業(yè)物資供應(yīng)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>福建ZF配件哪家強(qiáng) 信息推薦自業(yè)物資供應(yīng)</p></a></div><div id="fp84egn" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/846569.html"><div><img 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