专利名称：TIME OF FLIGHT
发明人：WILCOX, Martin, S.,BOEH, Frank申请号：EP06710644.3申请日：20060109公开号：EP1839072A2公开日：20071003
摘要：First and second devices (7, 8) are configured to transmit and receive signalswirelessly and have first and second clocks respectively for determining signal
transmission and arrival times. The first device transmits first and second signals (9, 10)and the second device transmits a third signal (1 1 ). By introducing a delay into the firstsignal, a thief may be able to fool the devices into thinking that they are closer than theyreally are. To help identify if a delay has been introduced into the first signal, the firstdevice calculates a ratio of clock rates for the first and second clocks and determineswhether the calculated ratio falls within a predefined range.
申请人：Koninklijke Philips Electronics N.V.,Philips Intellectual Property & StandardsGmbH
地址：Groenewoudseweg 1 5621 BA Eindhoven NL,Steindamm 94 20099 Hamburg DE
国籍：NL,DE
代理机构：Schouten, Marcus Maria
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