signal n. 1.信號,暗號;信號器。 2.動機,導(dǎo)火線 (for)。 3.預(yù)兆,征象。 call signal 【無線電】呼號。 an alarm signal 警報(器)。 an information signal 〔美國〕暴風(fēng)警報(旗)。 an international code of signals 國際通用信號。 a signal of distress =a distress signal 船只失事信號。 adj. 1.暗號的,作信號用的。 2.顯著的,非常的,優(yōu)越的。 a signal victory [defeat] 大勝[敗]。 vt.,vi. (〔英國〕 -ll-) 發(fā)信號[警報]給(人、船等);用信號[警報]通知(暴風(fēng)、危險等);用動作[手勢]示意;預(yù)示。 a signaling bomb 信號彈。
To realize this , drawing roller speed program control of horizontal continuous casting machine based on frequency converter , the signal generator provides program signal to frequency converter 采用變頻器實現(xiàn)水平連鑄機拉坯輥速度程序控制,由信號發(fā)生裝置給變頻器提供程控信號。
Scrambler - a device that electronically alters a program signal so that it can be seen only by persons , typically paid subscribers , with appropriate decoding , or " descrambler " devices 擾頻器-此電子設(shè)備可以改變一個節(jié)目的信號,只有在正確的解碼或安裝正確的裝置時,才能被特定人群收看,特別是付費訂戶。
Study abroad channel services the whole nation via china sat 6b communication satellite , which transmits programming signals to 115 cities in 27 provinces throughout china , claiming 6 million set - top box users until july 2006 《留學(xué)世界》頻道通過中星6b國際通信衛(wèi)星覆蓋全國,截止2006年7月,頻道覆蓋用戶已達600萬戶,涵蓋了27個省、自治區(qū)、直轄市的115個城市網(wǎng)絡(luò)。
With the development of digital satellite broadcasting and high speed digital signal processing technology , adopting satellite transport program signal has become a simple and feasible technology method to realize fm radio synchronous broadcasting and extend the covering of radio broadcast 摘要隨著數(shù)字廣播衛(wèi)星和高速數(shù)字信號處理器技術(shù)的發(fā)展,采用衛(wèi)星傳輸節(jié)目源信號已成為實現(xiàn)調(diào)頻同步廣播、擴大廣播電臺覆蓋范圍的一種簡捷、可行的技術(shù)方案。
Only few analog tv channels are there in country areas and what more the covering range of the analog transmitters is smaller than that of digital transmitters which though with the same power , which result in that the covering site of broadcasting signals is always the urban areas while people who live in the remote areas receive no tv program signals , and as the essential parts of utilities for our party and governments to expressing its administration conception , broadcasting in suburban areas by far cannot give the government the ability to give publicity to the people effectively 農(nóng)村廣播電視的覆蓋工作,長期以來一直是我們廣播事業(yè)建設(shè)的薄弱環(huán)節(jié)。模擬電視節(jié)目套數(shù)很少,而且同等功率的模擬發(fā)射機覆蓋范圍也相對數(shù)字發(fā)射機的小,通常只是集中覆蓋主要城鎮(zhèn)和人口聚集地,偏遠地區(qū)的廣大群眾長期不能收看電視。廣播電視作為黨和政府喉舌的功能,沒有得以充分發(fā)揮。
First , the system converts the received tv program signals into mpeg file with video capture card , cut the mpeg file into several short mpeg files according to the content of the program and establish index for them . then , it transports the short mpeg files to jukebox server . the jukebox server with responsibility for discs management , it record the program material into discs and provide service for clients visit the program online 系統(tǒng)將接收到的衛(wèi)星電視信號通過視頻采集卡,把它采集成mpeg文件,再根據(jù)節(jié)目內(nèi)容將mpeg文件分段成小的節(jié)目素材文件并建立檢索索引,然后將它傳遞到光盤庫服務(wù)器;光盤庫服務(wù)器負責(zé)光盤的管理,它一方面將節(jié)目素材文件刻錄到光盤上,另一方面為客戶機提供在線訪問服務(wù);客戶端根據(jù)一定檢索條件進行檢索,獲得所需的節(jié)目素材文件,并下載到本地,本地的媒體編輯軟件直接對mpeg文件進行編輯,生成新的節(jié)目。