TELEVISION DISTRIBUTION SYSTEM FOR SIGNAL SUBSTITUTION
摘要
A cable television system in which the head end (127) substitutes different channels for various different geographic areas using separate trunk lines for each area.
申请公布号
CA2263467(C)
申请公布日期
2005.10.11
申请号
CA19972263467
申请日期
1997.07.15
申请人
INFORMATION RESOURCES, INC.
发明人
COWAN, THOMAS M.;THOMAS, SCOTT J.;RICHARDSON, BRUCE C.
