Michael P Coon

US Patent:

42812399, Jul 28, 1981

Filed:

Jul 23, 1979

Appl. No.:

6/059815

Inventors:

Michael D. Coon - Mesa AZ
Martin K. Grace - Scottsdale AZ
Steven R. Smith - Mesa AZ

Assignee:

Motorola Inc. - Schaumburg IL

International Classification:

G06M 308

US Classification:

235 92GA

Abstract:

In a projectile scoring system including a transmitter for illuminating the projectile and a plurality of spaced apart sensors providing signals indicative of the time of arrival of the reflected energy at each of the sensors, timing apparatus including counters activated by the sensor signals and deactivated simultaneously at a predetermined later time. The differences between the counts being utilized in a computer to calculate the position of the projectile relative to the sensors.