PHASE-LOCKED LOOP DEVICE AND CLOCK CALIBRATION METHOD THEREOF

• Main Authors: TZENG CHAO-WEN, HUANG SHI-YU, CHAO PEI-YING, FANG SHANIEN
• Format: Patent
• Language: English
• Published: 31.05.2012
• Subjects: AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATIONOF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES; BASIC ELECTRONIC CIRCUITRY; ELECTRICITY

The present invention discloses a phase-locked loop device and a clock calibration method thereof, wherein the phase-locked loop device comprises a first oscillating module, a second oscillating module, a comparison module and a control module. The first oscillating module generates a first clock signal. The second oscillating module generates a second clock signal. After comparing the first clock signal with the second clock signal, the comparison module generates a difference signal. According to the difference signal, the control module, electrically connected with the first oscillating module, the second oscillating module and the comparison module, interactively tunes the first clock signal and the second clock signal to be as close as possible.