アイティービジョン受信機の開発 : インターテキスト方式による双方向テレビ

抄録

We have developed an IT VISION receiving set that enables viewers to easily participate in an interactive TV program. This Intertext system based on today's infrastructure has realized interactive service inexpensively. The set receives an interactive application with the related TV program transmitted by the vertical blanking interval (VBI) of the video signal. By using a remote controller, the set displays information and navigation data on the TV screen, and sends the viewer response to the response server via the phone line. The server can send the response to the broadcasting station or a transaction service bureau as occasion demands.