Jones & Volentine L.L.P.
Starting circuit and starting method for a brushless motor
 In order to start a brushless motor, a frequency setting circuit sets a frequency value, a counter increases a count value in response to a main clock signal, and a comparator compared the value of the frequency setting circuit with that of the counter and resets the counter when the compared values are the same. A circuit is also provided for changing the frequency value of the frequency setting circuit to a high frequency value in response to an output signal of the comparator and a back electromotive force detection signal. 
Samsung Electronics Co., Ltd.
H
H02P
inventional
Hyung-Mook Shi-Hong
Choi Park