Abstract: The present invention relates to a system and method for providing advertisement at a set top box in connection with processing of video-on-demand (VOD) contents.

Abstract: The present invention relates to a VOD service operating method and system for providing VOD service through interchange of VOD contents between a VOD server and a set-top box. In accordance with the present invention, a plurality of VOD contents are at least categorized as a first mode and a second mode. The VOD contents included in the first mode store beforehand basic information necessary for selecting the VOD contents in the set-top box by PUSH of the VOD server and provide the stored basic information on a display under the management of the VOD management application when the first mode is activated. Further, the VOD contents included in the second mode transfer a request signal of basic information necessary for selecting the VOD contents from the VOD server to the set-top box according to a user's request. They then display in real time the basic information transferred to the set-top box on a display under the management of the VOD management application.