NONCONTACT COMMUNICATION SYSTEM AND INTERROGATOR USED THEREFOR

Title:

NONCONTACT COMMUNICATION SYSTEM AND INTERROGATOR USED THEREFOR

Document Type and Number:

WIPO Patent Application WO/1998/026369

Kind Code:

A1

Abstract:

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.

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Inventors:

UEDA TAKASHI (JP)
FUJISAWA MASANORI (JP)

Application Number:

PCT/JP1997/004504

Publication Date:

June 18, 1998

Filing Date:

December 08, 1997

Export Citation:

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Assignee:

ROHM CO LTD (JP)
UEDA TAKASHI (JP)
FUJISAWA MASANORI (JP)

International Classes:

G06F17/30; G06K17/00; G06K7/00; (IPC1-7): G06K17/00

Foreign References:

JPS63246039A	1988-10-13
JPH08167012A	1996-06-25

Other References: