Yasushi Yanagihara

Tree-type network system, node device, broadcast system, broadcast method, and the like

Network system, information processor, and information processing program recording medium

Tree-type broadcast system, method of instructing mode switch, broadcast device, and broadcast process program

Information delivery system, node device, method to issue unrestricted data, and the like

Network system, information processor, connection destination introducing apparatus, information processing method, recording medium storing program for information processor, and recording medium storing program for connection destination introducing apparatus

Tree-shaped broadcasting system, packet transmitting method, node device, and computer-readable medium

Contents distribution system, contents distribution method, terminal apparatus, and recording medium on which program thereof is recorded

Contents distribution system, node apparatus and information processing method thereof, as well as recording medium on which program thereof is recorded

Server device, association method and program for portable apparatus

Content distribution system, content distributing method, connection managing device, distributing device, terminal equipment, and program