Issued Patents All Time
Showing 26–45 of 45 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7263154 | Method and apparatus for enabling fast clock phase locking in a phase-locked loop | Ding-Jen Liu, Jong-Woei Chen, Chih-Cheng Chen | 2007-08-28 |
| 7197001 | Apparatus for detecting a pre-pit signal | — | 2007-03-27 |
| 7190454 | Automatic power controller | Pao-Ping Ma | 2007-03-13 |
| 7161436 | Charge pump structure for reducing capacitance in loop filter of a phase locked loop | — | 2007-01-09 |
| 7161417 | Loop filter and method for generating stable control voltage of the same | Chih-Cheng Chen | 2007-01-09 |
| 7133348 | Phase lock loop for a controller in an optical disk system and methods therefor | Chih-Cheng Chen, Chao-Long Tsai | 2006-11-07 |
| 7126384 | Peak detection circuit with double peak detection stages | Yung-Yu Lin, Chih-Cheng Chen | 2006-10-24 |
| 7109806 | Device and method for detecting phase difference and PLL using the same | Chia-Hua Chou | 2006-09-19 |
| 7099788 | Multiphase waveform generator capable of performing phase calibration and related phase calibration method | Wei-Hsuan Tu | 2006-08-29 |
| 7075348 | Differential charge pump with common-mode feedback compensation | Chih-Cheng Chen | 2006-07-11 |
| 7054250 | Method and device for jitter enhancement in an optical disc system | Chih-Cheng Chen | 2006-05-30 |
| 6998891 | Apparatus for calibrating a charge pump and method therefor | Chih-Cheng Chen | 2006-02-14 |
| 6897691 | Phase locked loop with low steady state phase errors and calibration circuit for the same | Chih-Cheng Chen | 2005-05-24 |
| 6882606 | Optical disc apparatus and method for recording data onto an optical disc in multiple write sessions | — | 2005-04-19 |
| 6861898 | Loop filter and method for adjusting a compensating current of the same | Chih-Cheng Chen | 2005-03-01 |
| 6850102 | Apparatus for calibrating a charge pump and method therefor | Chih-Cheng Chen | 2005-02-01 |
| 6815987 | Phase locked loop | Chih-Cheng Chen | 2004-11-09 |
| 6781469 | Phase-locked loop having phase detector error signal reshaping and method thereof | Hsu-Feng Ho | 2004-08-24 |
| 6754147 | Phase locked loop for controlling recordable optical disk drive | Hung-Ching Chen | 2004-06-22 |
| 6734722 | Method for reducing area in continuous-time filter for low frequency applications | — | 2004-05-11 |