Multiple subscriber video-on-demand system,申请号US19960642831-传众专利搜索

Multiple subscriber video-on-demand system

申请公布号：US5923361(A)

申请号：US19960642831

申请日期：1996.05.03

申请公布日期：1999.07.13

申请人：

LUCENT TECHNOLOGIES INC.

发明人：SUTTON, JR., GARNETT GRAHAM

分类号：H04L12/28;H04L29/06;H04N7/10;H04N7/173;(IPC1-7):H04N7/16

主分类号：H04L12/28

摘要：A system which makes use of existing coax wiring to provide video-on-demand to individual subscribers. IP addressable, bi-directional video switches are used to replace traditional set-top cable boxes. The video switches are controlled by a network server which communicates with them over the existing coax wiring by using one of the frequencies previously used to transmit a VHF channel. The network server also controls video servers and a video head end, and it interfaces with the coax by means of a head end IP tap. Consequently, the network server can receive the subscriber's request for particular video programming, and it can order a video server to provide such programming to the subscriber, coordinating the programming, any desired frequency shifting, and the selection of the frequency on which the programming should be transmitted by the video head end and received by the subscriber's video switch.