专利名称：An electronic price label (EPL) system 发明人：JOHN COKER GOODWIN III油棕树图片
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申请号：AU5586196
申请日：19960607
公开号：AU699744B2
公开日：
19981210
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摘要：The invention relates to an electronic price label system and in particular to a system and method which determines a number of electronic price label (EPL) data message transmission attempts to an EPL (18). A transmitter (12,10) transmits a data message to the EPL (18). A receiver (12,16) receives a return signal from the EPL (18). A storage system (28) stores a status flag reprenting a first number of times the data message is transmitted by the transmitter to the EPL (18), the status flag being bad upon an established signal to noi (S/N) ratio. A communication ba station (CBS) (10) determines a new S/N ratio from the return signal. A runtime analyzer program (26) determines whether the new S/N ratio is below a range of S/N ratios that includes the established S/N ratio, and if it is, provides a new status flag reprenting a cond number of transmission times greater than the first number of transmission times. The transmitter (12,16) transmits a subquent data message the cond number of times.
申请人：NCR CORPORATION
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