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Synchronization of a Plurality of Devices in a Wireless Sensor Arrangement

  • US 20110006908A1
  • Filed: 09/02/2010
  • Published: 01/13/2011
  • Est. Priority Date: 02/27/2006
  • Status: Active Grant
First Claim
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1. An event timing system comprising:

  • a start device in an area of a multi-contestant competitive track event which establishes a single authoritative start time upon activation by a starting official, runs a cycle timer beginning at the single authoritative start time, and which attempts to resynchronize a plurality of stop devices by wirelessly broadcasting within an area of the multi-lane track a plurality of start messages;

    a plurality of stop devices within the area of the competitive track event, each of the contestants being assigned to a track lane wherein two or more stop devices are assigned to each track lane, each stop device being operated by a stop official, having a local stop timer synchronized or resynchronized to the single authoritative start time using a value from at least one of the start messages, and each stop device wirelessly transmitting a stop message responsive to operation of a stop trigger by a stop official, each stop message having a stop time parameter equal to a current value of a local stop timer upon stop trigger operation; and

    a control device within the area of the competitive track event which, responsive to receipt of the stop messages, produces a recording of one or more stop time parameters, wherein all of the recorded stop time parameters are synchronized or resynchronized to the single authoritative start time.

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