The times which elapse while the participants in a race or another contest cover the distance between a starting line and a finish line are ascertained, at an accuracy of one hundredth of a second, with a camera which takes pictures of the finish line at a first frequency and transmits picture signals...http://www.google.fr/patents/US5105395?utm_source=gb-gplus-shareBrevet US5105395 - Method of and apparatus for ascertaining the times of participants in races and other contests
Method of and apparatus for ascertaining the times of participants in races ...
