Buffer memory dispersion type video/audio transmission system with spatially and timewise divided inter-office junction lines

A buffer memory dispersion type video/audio transmission system with spatially and timewise divided interoffice junction lines comprising:

• a center comprising:
• a group of audio files for storing audio information;
• a group of video files for storing video information;
• means for fetching specific information from said audio and video file groups in response to an information request received at said center from a subscriber terminal unit and for dividing fetched video information into a luminance signal and a chrominance signal;
• and
• means for transmitting said luminance signal with an audio signal based on said fetched audio information in a time-divisional fashion by a first junction line and for transmitting said chrominance signal with a superimposing signal in a time-divisional fashion by a second junction line;
• and
• a plurality of subcenters comprising:
• a multiplex receiver for receiving said transmitted signals from said first and second junction lines;
• video and audio buffer memories for temporarily storing video and audio information received by said multiplex receiver from said first and second junction lines;
• and
• an audio output unit and a video output unit and an audio changeover unit and a video changeover unit for coupling said temporarily stored video and audio information to said subscriber terminal units.