| 摘要 |
AN ACCESS SYSTEM CONTROLLER FOR USE IN A SYSTEM THAT CONTROLS ACCESS OF PERSONNEL TO A RESTRICTED AREA BASED ON VALIDATION OF IDENTIFICATION CARDS PRESENTED TO A READER. THE UNIQUE IDENTIFICATION CODE ON EACH CARD INDEXES THE ADDRESS IN MEMORY (14) OF THE RELATED DATABASE RECORD THAT DETERMINES WHETHER ACCESS CAN BE GRANTED. THIS PROCESS ELIMINATES THE CONVENTIONAL DATA SEARCHING TECHNIQUE AND PROVIDES VERY FAST DATA RETRIEVAL AS WELL AS GRANTING ACCESS WITHIN AN EQUAL TIME INTERVAL FOR ALL CARD HOLDERS.
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