发明名称 ATTENDANCE REGISTRATION SYSTEM BY RADIO LINK
摘要 A data collection system comprising one or more portable computer devices (2), forming mobile data collection means, each including wireless transceiver means (10) and a data-logging program, and a fixed data collection system comprising a central computer (12) which is connected to at least one fixed wireless transceiver means (14) for communication with the mobile transceivers, the central computer having a data collation program for manipulating data transmitted from the individual collection means.
申请公布号 CA2146116(A1) 申请公布日期 1994.04.14
申请号 CA19932146116 申请日期 1993.10.07
申请人 GURYEL ALI 发明人 GURYEL ALI
分类号 G07C1/10;G07C9/00;(IPC1-7):H04B7/26 主分类号 G07C1/10
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