CATV communication system, method of communication

专利名称：CATV communication system, method of

communication by the same, and center andterminal devices thereof

发明人：Kenji Yashiro,Tetsuichiro Sasada申请号：US08/756522申请日：19961126公开号：US05930475A公开日：19990727

摘要：The CATV system includes a center device and a plurality of terminal devices.The center device sends downstream timeslots, to the terminal devices, includingupstream timeslot occupancy information and collision information. Upstream timeslotoccupancy information indicates whether or not an upstream timeslot corresponding tothe downstream timeslot is vacant, and collision information indicates whether or not acollision has occurred. The terminal device receives the downstream timeslot, checksupstream timeslot occupancy information to detect upstream timeslot in the vacantstate, and sends upstream data to the center device via the vacant upstream timeslot. Ifthe upstream timeslot makes a collision, the center device detects it and sends adownstream timeslot which includes collision information indicative of the occurrence ofthe collision. The user of the terminal device recognizes the collision having occurred ornot by referring to the collision information.

申请人：PIONEER EECTRONICS CORPORATION,IMAGE A CORPORATION

代理机构：Young & Thompson

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