IC card reader/writer for allowing communication with a pluralit

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Details

395830, 395831, G06F 1300, G06F 1730

Patent

active

057991715

ABSTRACT:
Upon activating an inserted IC card, a reader/writer identifies a protocol type of the IC card based on initial response data sent from the IC card. When the protocol type of the IC card is the same as that of the host unit as verified by the identification, control is effected to allow direct data transfer to be made between the host unit and the IC card. When, on the other hand, the protocol type is different from that of the host unit as verified by the identification, control is made so as to allow data transfer to be made between the host unit and the IC card subsequent to protocol conversion. By doing so, one IC card reader/writer can hand a plurality of IC cards different in type from each other.

REFERENCES:
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patent: 5613096 (1997-03-01), Danknick
patent: 5655145 (1997-08-01), Chejlave, Jr. et al.
Patent Abstracts of Japan, vol. 13, No. 64, (P-827) Oct. 1988 re JP 63-250789.
Patent Abstracts of Japan, vol. 13, No. 64, (P-827) Oct. 1988 re JP 63-250726.
Patent Abstracts of Japan, vol. 18, No. 74, (P-1688) Oct. 1993 re JP 05-282534.
Patent Abstracts of Japan, vol. 16, No. 218 (P-1357) Feb. 1992 re JP 04-042321.

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