Modulators inventions 08/07

20070200645 - Frequency modulator, frequency modulating method, and wireless circuit: A voltage controlled oscillator 1, a variable frequency divider 2, a phase comparator 3, and a loop filter 4 form a Phase Locked Loop (PLL). A sigma-delta modulator 5 sigma-delta modulates data obtained by adding a fractional part M2 of the frequency division factor data with modulation data X by... Agent: Wenderoth, Lind & Ponack L.L.P.

20070176706 - Apparatus and method for adaptive demodulation of pwm signal: A demodulator for processing a PWM (pulse width modulation) signal includes a variable capacitor, a charging unit, a discharging unit, and a tuner. The charging and discharging units charge or discharge the variable capacitor depending on the PWM signal. The tuner determines a capacitance of the variable capacitor and a... Agent: Law Office Of Monica H Choi