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上海开播图文电视图文电视是利用电视信号帧消隐期间插人发送文字图象的一种信息传输业务。电视观众只需用图文电视接收器在家用电视机上遥控选择查找所需的信息，十分方便。上海市图文电视信息中心于１９９３年１０月中旬正式开播。目前已向社会开放的栏目有：公告栏、购...
Shanghai teletext teletext is the use of television signal frame blanking inserted during the transmission of text images of an information transmission business. TV viewers simply use the teletext receiver to remotely control the home TV to find the information they need, making it easy. Shanghai Teletext Information Center was officially launched in mid-October 1993. Currently open to the community are: bulletin boards, buy ...