초록 ▼

A multimedia bidirectional broadcast system including a broadcast station and subscriber terminals. The broadcast station includes a main control unit having therein a data base control table in which program and commerical down load sequences are recorded depending on a setting effected by a subscr

A multimedia bidirectional broadcast system including a broadcast station and subscriber terminals. The broadcast station includes a main control unit having therein a data base control table in which program and commerical down load sequences are recorded depending on a setting effected by a subscriber, a motion picture program data base, a commerical data base, a program transmitter for effecting accesses and transmissions of transmission programs onto transmission lines based on the setting of the main control unit, a commercial transmitter for accessing the commerical data base and for transmitting content thereof based on the setting of the main control unit, an image encoder for achieving a bandwidth compression on a video signal, a cell assembler for processing data to be transmitted onto a broadband transmission line so as to generate a cell of the data, and an asynchronous transfer mode exchange for delivering the cell to a subscriber system associated therewith. Each of the subscriber systems includes a network terminal, a terminal control unit, a decoder to decode the compressed video signal, and a television monitor.

대표청구항 ▼

A multimedia bidirectional broadcast system comprising: (a) a broadcast station including: a main control unit having therein data base control table in which program and commercial down load sequences are recorded depending on a setting effected by a subscriber; a motion picture program data base;

A multimedia bidirectional broadcast system comprising: (a) a broadcast station including: a main control unit having therein data base control table in which program and commercial down load sequences are recorded depending on a setting effected by a subscriber; a motion picture program data base; a commercial data base; a program transmitter for accessing said motion picture program data base and transmitting content thereof based on the setting of said main control unit; a commercial transmitter for accessing said commercial date base and for transmitting content thereof based on the setting of said main control unit; an image encoder for achieving a bandwidth compression on video signals from said program and said commercial transmitters; a cell assembler for processing data to be transmitted onto a broadband transmission line so as to generate a cell of the data from said image encoder; and an asynchronous transfer mode exchange for delivering the cell to a subscriber system associated therewith; (b) transmission lines, one end of each of which is connected with said broadcast station; and (c) subscriber systems, each including: a network terminal connected with the other end of the corresponding transmission line, receiving the cell; a decoder connected with the network terminal, decoding the cell; a program buffer for storing program video signals obtained from said decoder; a commercial buffer for storing commercial video signals obtained from said decoder; a mixer for effecting a change-over operation between the program video signals and the commercial video signals; and a television monitor for displaying the video signals from the mixer.