Portable electronic device with a security function and a...

Electrical computers and digital processing systems: support – System access control based on user identification by...

Reexamination Certificate

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Details

C726S021000, C726S030000, C705S066000, C235S382500

Reexamination Certificate

active

07096366

ABSTRACT:
A portable electronic device with which an owner of the device makes use of a specific application program and a method for issuing the device. An unissued IC card can be written with the specific data without satisfying the security function of the IC card. After the issuance of the IC card, the security function becomes valid and each IC card requires satisfaction of the security function in case of data writing or data rewriting.

REFERENCES:
patent: 4800520 (1989-01-01), Iijima
patent: 4839792 (1989-06-01), Iijima
patent: 4974208 (1990-11-01), Nakamura et al.
patent: 5039850 (1991-08-01), Yamaguchi
patent: 5191608 (1993-03-01), Geronimi
patent: 5365045 (1994-11-01), Iijima
patent: 5473690 (1995-12-01), Grimonprez et al.
patent: 5517014 (1996-05-01), Iijima
patent: 5729717 (1998-03-01), Tamada et al.
patent: 5862402 (1999-01-01), Sekiya
patent: 5929428 (1999-07-01), Iijima
patent: 5959276 (1999-09-01), Iijima
patent: 6199762 (2001-03-01), Hohle
patent: 0 795 844 (1997-09-01), None
patent: 0 798 673 (1997-10-01), None
patent: 0 818 761 (1998-01-01), None
patent: 0 847 031 (1998-06-01), None
Schneier, Bruce; Applied Cryptography; 1996; John Wiley & Sons Inc., 2nd Edition; pp. 21-46, 561-595.

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