Patent ID: 6170439
Filing Date: 2001-01-09
Classification: A01K,Y10S

Abstract:
A method of producing a wide range of stimulus intensities for training an animal using a remote transmitter and a collar-mounted receiver carried by the animal, comprising:(a) selecting one of a plurality of desired stimulus levels at the transmitter;(b) transmitting an rf signal representative of the selected desired stimulus level to the receiver;(c) demodulating the received rf signal in the receiver to produce a digital signal representative of the selected stimulus level and inputting the digital signal to a microprocessor in the receiver;(d) operating the microprocessor to decode the digital signal to determine a first duration and a second duration;(e) operating the microprocessor to generate a first stream of pulses on an output bus of the microprocessor, each of the pulses of the first stream being of a third duration, the pulses of the first stream being in periodic groups so the width of each group represents the first duration and the period of the groups represents the second duration;(f) filtering the first stream of output pulses to produce a second stream of pulses each having a width which corresponds to the first duration, a repetition rate of the pulses of the second stream corresponding to the second duration; and(g) coupling the second stream of pulses to a control electrode of a switch coupled in series with a primary winding of an output transformer of the receiver to repetitively turn the switch on for durations corresponding to the first duration to cause the amplitude of voltage pulses produced between contact electrodes connected to terminals of a secondary winding of the output transformer to correspond to the first duration and to cause the repetition rate of the voltage pulses produced between the contact electrodes to correspond to the second duration.