This study aims to clarify a generating process of the time structure of television live program that has worked out "the sharing Time" relation among the television, the viewer, and the social events, and also to consider how it transforms in digitalization. I examined the historical data mainly through the interview research with the producers of the news programs which were recognized to develop a new forms of live program in the Japanese television history. The reason to focus on the daily live news programs as the target for the survey and analysis is that the news programs are the daily connection point of the social event and the viewer. And the technological factor and the program structure related closely in this genres. In the latter half of the 20th century, the television has developed as main media of the society which ties "Now" of the event in the world and "Now" of family time as the only media image in daily life. It has been pointed out by main researchers that the characteristic of the television connected to the time has been a source of television's "Power" to the society. However, as a result of the research, we can find that characteristic was not given to television from the beginning. It has been formed by the producers of the programs, as a result of designing the time structure of "Program" to create "the Sharing time" related between the viewer and the television. At the same time, it is clarified that the time structure of the environment of media image have been "multilayered", "movable", "interactive" by the digitalization of the television and other media image. This phenomenon has the possibility to influence on the relationship between the time of the television and the society extensively.

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