Abstract: The present invention provides an advertisement time-frame transaction system comprising assigning means for selecting a viewer according to information about viewers and allowing an advertiser of an advertisement to assign an advertisement-viewing reward to the advertisement for the selected viewer, designating means for allowing the selected viewer to designate whether he/she will view the advertisement having the assigned advertisement-viewing reward, and hanging means for allowing the advertiser to change the advertisement-viewing reward of the advertisement in real time, depending on the information about the designation to be provided from the designating means when the viewer has designated whether he/she views the advertisement.

Abstract: The achievement of broadband information transmission media, makes it possible to perform on-demand information distribution. With this comes a desire for an autonomous information distribution system that meets both diverse client requirements and the need for a high level of immediacy. An objective of the present invention is to provide such information distribution systems.