Boots – shoes – and leggings
Patent
1993-08-03
1995-03-07
Black, Thomas G.
Boots, shoes, and leggings
395650, 364DIG1, 235380, G06F 1100, G06F 1316, G06K 500
Patent
active
053966244
ABSTRACT:
An approach for handling data representative of invalid transaction cards is disclosed. A memory area 34 in a transaction terminal 16 is divided into a plurality of stacks. Two digits of the invalid account number are used to identify the stack into which the remainder of the account number is added. Stack start pointers are provided for file management. As the newest entries are added to the list, the oldest entries are purged. The subject system allows a large number of accounts to be stored in a minimum of space. Updates of the file can be easily handled during direct communication sessions between a central processor 12 and the terminal 16.
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H. Korth & A. Silberschatz, Database System Concepts, 2/e, McGraw-Hill, 1991, 1986, pp. 244-272.
Black Thomas G.
Visa International Service Association
Wang Peter Y.
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