Patent ID: 7811163

Claim:
A transmitter tag for a golf ball, the tag comprising: a transmitter configured to issue a location signal for location of said golf ball; a power source for powering said transmitter; activation means operable for activating said transmitter to switch to an on state in response to said golf ball being struck; a latching portion connected to said activation means operable to switch from a high impedance off state to be latched in a low impedance on state when said activation means is switched to the on state; and deactivation means comprising an omnipolar Hall effect switch operable when said latching portion is latched in the low impedance on state to deactivate said transmitter in response to the presence of a constant, polarity independent magnetic field; wherein said transmitter further comprises a surface acoustic wave resonator for generating a transmitter carrier signal; and said deactivation means incorporates a controlled clocking circuit for cycling power to a Hall element of said Hall effect switch thereby to reduce power consumption of said Hall effect switch.