| 摘要 |
PROBLEM TO BE SOLVED: To provide an information communication equipment, an information communication system and an information storage medium by which advantages and disadvantages of pluralities of communication systems are offset with each other by using pluralities of the communication systems. SOLUTION: In this information communication system 301 (information storage medium) having a radio communication function that sends/receives information by a radio wave to / from an external communication equipment (external communication terminal equipment), the system 301 employs communication systems consisting of a direct spread DS communication system that is one system of spread spectrum SS communication systems and of a phase shift keying PSK communication system in combination and selects either of the two communication systems as required to make communication with the external communication equipment. |
