| Patent | Date |
|---|
Authentication System
App 20120221863 - OSAKA; Koji ; et al. | 2012-08-30 |
Microcomputer with nonvolatile memory protected against false erasing or writing
Grant 6,813,191 - Fujioka November 2, 2 | 2004-11-02 |
Information security microcomputer having an information securtiy function and authenticating an external device
App 20040128523 - Fujioka, Shuzo | 2004-07-01 |
Microcomputer and method and apparatus for changing the contents of the memory in the microcomputer
Grant 6,725,375 - Fujioka April 20, 2 | 2004-04-20 |
Microcomputer exchanging data with host computer
Grant 6,658,493 - Fujioka December 2, 2 | 2003-12-02 |
Microcomputer with nonvolatile memory protected against false erasing or writing
App 20030169624 - Fujioka, Shuzo | 2003-09-11 |
Information processing device
App 20030005321 - Fujioka, Shuzo | 2003-01-02 |
Random-number generating circuit, non-contact IC card having random-number generating circuit, reader/writer, and method of testing an apparatus having the random generating circuit
Grant 6,480,869 - Fujioka November 12, 2 | 2002-11-12 |
Microcomputer and memory contents change in the microcomputer
App 20020013884 - Fujioka, Shuzo | 2002-01-31 |
Recognition system and recognition method for non-contact IC cards
Grant 6,040,786 - Fujioka March 21, 2 | 2000-03-21 |
Antenna for non-contact IC card gate facility
Grant 5,837,982 - Fujioka November 17, 1 | 1998-11-17 |
Apparatus for electromagnetic communication between a computer and a non-contact IC card
Grant 5,727,230 - Fujioka March 10, 1 | 1998-03-10 |
IC card including a memory, a password collating means and an access permitting means for permitting access to the memory
Grant 5,719,387 - Fujioka February 17, 1 | 1998-02-17 |
IC card
Grant 5,698,836 - Fujioka December 16, 1 | 1997-12-16 |
Noncontacting IC card system and gate facility and antenna mechanism
Grant 5,661,286 - Fujioka August 26, 1 | 1997-08-26 |
Non-contact IC card and non-contact IC card reader/writer
Grant 5,619,529 - Fujioka April 8, 1 | 1997-04-08 |
Noncontact card and card system
Grant 5,604,342 - Fujioka February 18, 1 | 1997-02-18 |
Level converter including wave-shaping circuit and emulator microcomputer incorporating the level converter
Grant 5,559,996 - Fujioka September 24, 1 | 1996-09-24 |
IC card for prevention of fraudulent use
Grant 5,286,962 - Fujioka , et al. February 15, 1 | 1994-02-15 |
Non-contact IC card and method of using the same
Grant 5,220,158 - Takahira , et al. June 15, 1 | 1993-06-15 |
Non-contact IC card
Grant 5,212,373 - Fujioka , et al. May 18, 1 | 1993-05-18 |
IC card with memory area protection based on address line restriction
Grant 5,206,938 - Fujioka April 27, 1 | 1993-04-27 |
Memory device
Grant 5,056,089 - Furuta , et al. October 8, 1 | 1991-10-08 |
Microcomputer
Grant 5,047,924 - Fujioka , et al. September 10, 1 | 1991-09-10 |
Microprocessor having miswriting preventing function
Grant 5,036,460 - Takahira , et al. July 30, 1 | 1991-07-30 |
IC card
Grant 5,019,970 - Yamaguchi , et al. May 28, 1 | 1991-05-28 |
IC card having system ROM selection inhibit
Grant 5,016,212 - Yamaguchi , et al. May 14, 1 | 1991-05-14 |
Memory with function test of error detection/correction device
Grant 4,924,465 - Matsubara , et al. May 8, 1 | 1990-05-08 |
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