Patent ID: 6023725
Filing Date: 2000-02-08
Classification: H04L,H04N

Abstract:
A multiple video server apparatus for providing video services from a video transmission center to a plurality of user terminals, comprising:a first network of a variable bit rate provided in said video transmission center;a second network of a constant bit rate connecting said first network and the plurality of user terminals; anda server unit, provided in said video transmission center, transmitting data to said first network at a transmission interval T where T=DL/n where ""n"" is the constant bit rate of said second network and ""DL"" is a transmission data amount to be transmitted to said first network, wherein said server unit includes:a data storage unit storing transmission data on a stream unit basis;a buffer memory temporarily storing the data transmitted from said data storage unit to said second network;a network interface transmitting the data in said buffer memory to said first network;a timer unit generating a transmission timing signal at every transmission interval T by frequency dividing a transmission clock of said first network, anda processor module that when a transmitting request of the data stream is received, reads the transmission data from said data storage unit and stores the transmission data into said buffer memory, and each time a transmission timing signal is obtained from said timer unit, reads the transmission data on a data amount DL unit basis from said buffer memory to said network interface and transmits the transmission data to said first network.