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高精細度テレビジョン放送 （こうせいさいどテレビジョンほうそう、 英語: High-definition television; HDTV 、ハイ・デフィニション・テレビジョン）とは 走査線 数を増やし、かつ ワイドアスペクト比 (16:9) を採用することにより、鮮明な映像を実現した ...
History of television. Family watching TV, 1958. The concept of television is the work of many individuals in the late 19th and early 20th centuries. The first practical transmissions of moving images over a radio system used mechanical rotating perforated disks to scan a scene into a time-varying signal that could be reconstructed at a ...
High Definition kan syfta på: HD-kvalitet – video eller TV med högre upplösning och kvalitet än standardupplösning. High Definition Compatible Digital – ett digitalt ljudmedium på optisk skiva. High-Definition Multimedia Interface – en gränssnittstandard för kabel med kontaktdon vid överföring av okomprimerade digitala ljud- och ...
The term high definition once described a series of television systems from the 1930s and 1940s, starting with the British 240 line and 405 line black-and-white systems introduced in 1936, and including the American 525-line NTSC system established in 1941. However, these systems were only "high definition" when compared to earlier systems.
High-definition television (HDTV) in the Singapore now officially switched to fully digital terrestrial television was officially the main stations that transmit at 1080i 16:9. All analog broadcastings officially full-time completely turn off on New Year's Day (1 January) 2019 at 23:59:59 SGT ( UTC+8) after Singapore vocal national anthem was ...
Internet Protocol television ( IPTV) is the delivery of television content over Internet Protocol (IP) networks. This is in contrast to delivery through traditional terrestrial, satellite, and cable television formats. Unlike downloaded media, IPTV offers the ability to stream the source media continuously. As a result, a client media player ...
Truyền hình độ nét cao ( tiếng Anh: high-definition television, viết tắt HDTV) là định dạng kỹ thuật phát truyền hình kỹ thuật số với độ phân giải tốt hơn so với bình thường (như màn hình TV thường, hay SDTV ). HDTV được gọi là truyền hình kỹ thuật số ( digital television ...
