Meggitt Training Systems, Inc.

Inveris Training Solutions, Inc.

Wen Li

Carter Crittenden Bennett

Steven Fred Hering

Scott Billington

Dave Barrett

A method of determining an aim point of a firearm or simulated firearm at a time of firing by continuously pulsing a laser coaxially aligned with a barrel of the firearm or simulated firearm. The aim point is then continuously detected by a camera system observing the target. A shot firing event is detected and the last detected laser pulse location on the target prior to the shot firing event is determined. The aim point of the firearm or simulated firearm at the time of firing is extrapolated from the last detected laser pulse location and at least one laser pulse location prior to the last laser pulse location.

Apparatus and methods for detection of a shot firing event

A method of calculating the difference between a device clock and a host clock over a communication network is provided. In a preferred embodiment, the method comprises: a.) sending a sync requests over the communication network; b.) storing in memory a sent host time T0 when the sync requests was sent; c.) receiving a local time report over a communication network from a local device; d.) storing in memory a device local time X extracted from the local time report; e.) storing in memory a receive host time T3 when the local time report was received; f.) calculating T such that T=(T0+T3)/2; repeating steps a through f a plurality of times; and calculating coefficients Ai and Bi using linear regression after repeating steps a through f at least twice where X=Ai*T+Bi.

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Alpharetta, GA, United States of America

Wen Li