Patent ID: 7801575

Claim:
A transponder for transmitting a RFID signal for shot tracking a golfer's round of golf while conserving battery power, the transponder comprising: a battery in electrical communication with a resistor, wherein the battery is a three volt battery and the resistor controls the rate at which a capacitor is charged from the battery, the battery having 75 milli-amps hours of capacity; the resistor in electrical communication with the capacitor and a load switch, wherein the capacitor is a one micro-Farad capacitor; the load switch in electrical communication with a microprocessor, wherein when the load switch is closed, current drawn from the capacitor is allowed to flow to the microprocessor and radiofrequency component, wherein when the load switch is opened, the capacitor is recharged at a controlled rate and current does not flow to the microprocessor or the radiofrequency component, the load switch closed when a golf club strikes a golf ball, and the load switch with no impact transitions thus deactivating allowing the power to be conserved; the microprocessor in electrical communication with a radiofrequency component, wherein a signal is transmitted from the radiofrequency component and a confirmation signal is received from a receiver at the radiofrequency component, wherein the signal comprises the identification of a golf club and the radiofrequency component operates at 2.4 giga-Hertz; wherein the microprocessor is configured to deactivate transmission of the signal when a threshold number of signals are transmitted by the shot tracking device and the confirmation signal is not received by the shot tracking device; and a housing for enclosing the transponder, wherein the housing comprises a main body and a projection body for insertion into a grip of the golf club head, wherein a peak current of transmission of the signal is limited to 2 milliamps.