Data storage apparatus having memory area with a predetermined l

Details Data storage apparatus having memory area with a predetermined l Data storage apparatus having memory area with a predetermined l

1994-03-22

1997-07-01

Black, Thomas G.

Boots, shoes, and leggings

395481, 395405, 3642442, 3642591, 364DIG1, 235380, 235437, G06K 500

Patent

active

056447507

ABSTRACT:
A data memory of an IC card is divided into a plurality of areas, a logic type used when data is written in each area is set, and the logical AND between the written data and stored data in the memory is calculated by an AND logic circuit and written in the memory. In read access, output data can be directly obtained from the memory.

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Publication No. JP2144644, Patent Abstracts of Japan, vol. 14, No. 385.

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