| 摘要 |
<p>A noncontact communication system and an interrogator used therefor realize exchange information even when the interrogator is of either a signal superposition system or signal separation system. There are provided first and second carrier supply section (24, 28), first and second carrier modulating sections (25, 29), first and second carrier output sections (41, 42), first and second carrier detecting sections (26, 35) and a control section (50). The control section (50) identifies the system which the transponder uses, based on response information from the transponder, and information is transmitted in a form conforming to the identified method.</p> |
