Patent ID: 7031225

Claim:
A system for use in controlling and communicating the timing of a single athletic event between a timekeeping mechanism and a referee, the improvement compromising: a. at least one timing communicator device having a switch means, a transmitter means and a channel selector, said transmitter means responsive to the switch means and channel selector and said transmitter means adapted to transmit a wireless electromagnetic radiation signal from outside the field of play to the field of play; b. at least one mobile field communicator also having a receiver means and channel selector, said receiver means responsive to said channel selector; c. said at least one mobile field communicator adapted to be carried by the umpire or referee on the field of play and to receive said wireless signal from outside the field of play and emit an actuation signal in response thereto; d. said mobile field communicator and timing communicator channel selectors synchronized to produce assignment of a unique address to said mobile field communicators and timing communicators devices and said channel selectors allowing independent operation without interference from other mobile field communicator and timing communicator devices in use in close proximity; e. a programmable analog timer located in close proximity to the field of play but located outside the field play and said timer connected to said timing communicator; f. said timer adapted to actuate transmission of a signal from said timing communicator to said mobile field communicator upon expiration of a programmed time period; and, g. said mobile field communicator upon receipt of said signal from said timing communicator actuating sensory alerts.