Inventor
UMEHARA KEIJIRO
JP3 patents
Patents
3 patentsUS7030688B2Apr 18, 2006
Low-pass filter for a PLL, phase-locked loop and semiconductor integrated circuit
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD97 citations97
US7254507B2Aug 7, 2007
Analog circuit automatic calibration system
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD28 citations91
US6982581B2Jan 3, 2006
Duty cycle correction circuit
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD18 citations82