IC card having internal error checking capability

Details IC card having internal error checking capability IC card having internal error checking capability

1988-03-11

1990-05-29

Fleming, Michael R.

Excavating

371 371, G06F 1110

Patent

active

049301292

ABSTRACT:
An IC card particularly adapted for multiple functions and having an error checking capability which operates within the card and without the need for the processing power of the terminal. The IC card has an onboard memory and an onboard microprocessor. The onboard memory contains a plurality of application blocks to which access is selectively allowed by the microprocessor and a protected block which is accessible by the microprocessor but inaccessible by the terminal. Stored within the protected block are data specifying the location, size and application associated with each of the application blocks, as well as an error check code relating to the data then stored within the application block.

REFERENCES:
patent: 4672614 (1987-06-01), Yoshida
patent: 4710934 (1987-12-01), Traynor
patent: 4730320 (1988-03-01), Hidaka
patent: 4748627 (1988-05-01), Ohsawa
patent: 4766573 (1988-08-01), Takemae
patent: 4775979 (1988-10-01), Oka

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