Patent ID: 7853211
Filing Date: 2010-12-14
Classification: A63B,G06K,H04W,Y02D

Abstract:
1. 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 milliamp-hours of capacity; the resistor in electrical communication with the capacitor and a load switch, wherein the capacitor is an 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, wherein when the load switch is opened, the capacitor is recharged at a controlled rate and current does not flow to the microprocessor, 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 comprising a radiofrequency transceiver, wherein a signal is transmitted from the radiofrequency transceiver and a confirmation signal is received at the radiofrequency transceiver, wherein the signal comprises the identification of a golf club and the radiofrequency transceiver 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 radiofrequency transceiver and the confirmation signal is not received by the radiofrequency transceiver; 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, wherein a peak current of transmission of the signal is limited to 2 milliamps.