{"title":"光纤在高清电视中的作用","authors":"N. Hamilton-Piercy","doi":"10.1109/BAODS.1990.205507","DOIUrl":null,"url":null,"abstract":"An evolutionary upgrade of cable television by the introduction of fiber-optic cable and components is discussed. Relatively-long-distance transmission over fiber allows the establishment of many small neighborhood coaxial distribution networks of very high quality and capacity, all served from one hub. Technology available today allows 100000 urban households to be served from a single signal source (primary hub). Intermediate secondary hubs allow individual sections of the community to receive unique programming with subsequent transport on fiber to the 200-home neighborhood. Each neighborhood shares a fiber-optic node, delivering the equivalent of 75 HDTV channels with 50-dB carrier-to-noise ratio and all distortion products suppressed 60 dB or more below the carrier. Analog transmission is assumed to support this number node to the viewer's receiver. Signal formats suitable for direct reception to the home by conventional heterodyne receiver technology is generated at the primary hub, and no further processing is required.<<ETX>>","PeriodicalId":119716,"journal":{"name":"LEOS Summer Topical on Broadband Analog Optoelectronics: Devices and Systems","volume":"25 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1990-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Role of fiber optics in HDTV\",\"authors\":\"N. Hamilton-Piercy\",\"doi\":\"10.1109/BAODS.1990.205507\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"An evolutionary upgrade of cable television by the introduction of fiber-optic cable and components is discussed. Relatively-long-distance transmission over fiber allows the establishment of many small neighborhood coaxial distribution networks of very high quality and capacity, all served from one hub. Technology available today allows 100000 urban households to be served from a single signal source (primary hub). Intermediate secondary hubs allow individual sections of the community to receive unique programming with subsequent transport on fiber to the 200-home neighborhood. Each neighborhood shares a fiber-optic node, delivering the equivalent of 75 HDTV channels with 50-dB carrier-to-noise ratio and all distortion products suppressed 60 dB or more below the carrier. Analog transmission is assumed to support this number node to the viewer's receiver. Signal formats suitable for direct reception to the home by conventional heterodyne receiver technology is generated at the primary hub, and no further processing is required.<<ETX>>\",\"PeriodicalId\":119716,\"journal\":{\"name\":\"LEOS Summer Topical on Broadband Analog Optoelectronics: Devices and Systems\",\"volume\":\"25 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1990-07-23\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"LEOS Summer Topical on Broadband Analog Optoelectronics: Devices and Systems\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/BAODS.1990.205507\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"LEOS Summer Topical on Broadband Analog Optoelectronics: Devices and Systems","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/BAODS.1990.205507","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
An evolutionary upgrade of cable television by the introduction of fiber-optic cable and components is discussed. Relatively-long-distance transmission over fiber allows the establishment of many small neighborhood coaxial distribution networks of very high quality and capacity, all served from one hub. Technology available today allows 100000 urban households to be served from a single signal source (primary hub). Intermediate secondary hubs allow individual sections of the community to receive unique programming with subsequent transport on fiber to the 200-home neighborhood. Each neighborhood shares a fiber-optic node, delivering the equivalent of 75 HDTV channels with 50-dB carrier-to-noise ratio and all distortion products suppressed 60 dB or more below the carrier. Analog transmission is assumed to support this number node to the viewer's receiver. Signal formats suitable for direct reception to the home by conventional heterodyne receiver technology is generated at the primary hub, and no further processing is required.<>
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