Cushman, Darby & Cushman IP Group of Pillsbury Madison & Sutro LLP
Phase locked loop circuit
 A phase locked loop circuit comprises a divider which is changed in a dividing ratio in compliance with a control signal applied thereto, the output of the divider is phase-compared with an input signal of the phase locked loop circuit. A phase-compared output is applied to a low pass filter to obtain a direct current component, and an oscillator is controlled by the direct current component. 
Matsushita Electric Industrial Co., Ltd.
H H
H03L H04N
inventional inventional
Masaaki Naoji
Fujita Okumura