| Patents for H03D 13 - Circuits for comparing the phase or frequency of two mutually-independent oscillations (1,662) |
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| 02/08/2005 | US6853224 Method and device for improving efficiency of frequency synthesizer |
| 02/08/2005 | US6853223 Phase comparator and clock recovery circuit |
| 02/03/2005 | US20050025275 Apparatus of phase-frequency detector |
| 02/03/2005 | US20050024999 Method and related optical disk accessing apparatus for calibrating optical disk tilt servo system according to non-constant relation between locations and tilt angles of optical disk |
| 02/03/2005 | US20050024155 Jitter-less phase detector in a clock recovery circuit |
| 02/03/2005 | US20050024112 Pulse width modulated common mode feedback loop and method for differential charge pump |
| 02/03/2005 | US20050024106 Charge pump system for fast locking phase lock loop |
| 02/03/2005 | US20050024094 Rotational frequency detector system |
| 02/02/2005 | CN1574629A 时钟和数据恢复电路 Clock and data recovery circuit |
| 01/27/2005 | US20050018801 Wobble clock generator and driving method thereof |
| 01/27/2005 | US20050018800 Apparatus of adjusting wobble clock |
| 01/27/2005 | US20050018764 Method of determining adip information through counting identical bits and different bits |
| 01/27/2005 | US20050018579 Data slicer of dynamically adjusting slice level |
| 01/27/2005 | US20050018562 Method and related apparatus for evaluating beta-parameter according to write-in result of portion of write-in data with specific content while performing optimal power control of optical disk drive |
| 01/27/2005 | US20050018549 Method and related apparatus for evaluating beta-parameter according to results of read data sliced with different slicing levels while performing optimal power control of optical disk drive |
| 01/27/2005 | US20050017776 Chopped charge pump |
| 01/27/2005 | US20050017773 Phase locked loop circuit |
| 01/27/2005 | US20050017772 Method and related apparatus for decoding information carried by wobble signals |
| 01/27/2005 | US20050017758 Method of detecting phase difference, phase detector for performing the same and clock-and-data recovering device including the phase detector |
| 01/25/2005 | US6847789 Linear half-rate phase detector and clock and data recovery circuit |
| 01/20/2005 | US20050012524 PLL lock detection circuit using edge detection |
| 01/13/2005 | WO2005004333A2 Gain compensated fractional-n phase lock loop system and method |
| 01/13/2005 | WO2005004332A2 Improved charge pump system for fast locking phase lock loop |
| 01/13/2005 | WO2005004331A2 Differential charge pump phase lock loop (pll) synthesizer with adjustable tuning voltage range |
| 01/13/2005 | WO2005004315A2 Chopped charge pump |
| 01/13/2005 | US20050007720 Apparatus and method for generating wobble clock |
| 01/11/2005 | CA2359270C Phase/frequency comparator |
| 01/06/2005 | WO2005002069A2 Fast lock phase lock loop and method thereof |
| 01/06/2005 | WO2005001284A2 Pulse width modulated common mode feedback loop and method for differential charge pump |
| 01/06/2005 | US20050002450 Frequency difference measuring method |
| 01/06/2005 | US20050001656 Digital fractional phase detector |
| 01/05/2005 | EP1494386A2 Frequency difference measuring method |
| 01/04/2005 | US6839394 Frequency difference detector with hysteresis |
| 01/04/2005 | US6838912 Digital fractional phase detector |
| 12/30/2004 | US20040263229 Latch or phase detector device |
| 12/30/2004 | US20040263212 Circuit for controlling the performance of an integrated circuit |
| 12/29/2004 | CN1559105A Method and device for phase and frequency comparison |
| 12/28/2004 | US6836154 Direction sensitive and phase-inversion free phase detectors |
| 12/23/2004 | US20040258187 Recovery of clock and data using quadrature clock signals |
| 12/23/2004 | US20040258186 Method and a device for phase and frequency comparison |
| 12/23/2004 | US20040257118 System and method for dead-band determination for rotational frequency detectors |
| 12/16/2004 | US20040252804 Clock and data recovery circuit |
| 12/16/2004 | DE10320793A1 Latch or phase detector circuit for DRAM data storage uses flip flop stage and cascaded NAND gates to give output depending on clock and data state change phase |
| 12/14/2004 | US6831485 Phase frequency detector with a narrow control pulse |
| 12/09/2004 | WO2004107560A1 Phase detector and method of phase detection |
| 11/25/2004 | US20040232947 Phase difference detector, particularly for a PLL circuit |
| 11/24/2004 | EP1374404B1 Phase locked loop with a linear phase detector |
| 11/23/2004 | US6823133 Apparatus and method for electronic control of DC motor using an all-digital phase-locked loop |
| 11/23/2004 | US6822484 High-frequency phase/frequency detector with improved reset mechanism |
| 11/18/2004 | WO2004066074A3 Clock and data recovery phase-locked loop and high-speed phase detector architecture |
| 11/11/2004 | US20040223575 Frequency/phase locked loop clock synthesizer using an all digital frequency detector and an analog phase detector |
| 11/11/2004 | US20040223574 Phase frequency detector used in digital PLL system |
| 11/11/2004 | US20040223572 Method and apparatus for measuring phase error of a modulated signal |
| 11/11/2004 | US20040223570 System and method for compensating for skew between a first clock signal and a second clock signal |
| 11/11/2004 | US20040223565 System and method for maintaining a stable synchronization state in a programmable clock synchronizer |
| 11/11/2004 | US20040222857 Phase detector for a programmable clock synchronizer |
| 11/04/2004 | WO2004043062A8 Read-out circuit for infrared detectors. |
| 11/03/2004 | EP1473834A1 Method and circuit for sensing the transition density of a signal and variable gain phase detecting method and device |
| 11/03/2004 | EP1473828A1 Phase detector and method of generating a differential signal representative of a phase-shift |
| 11/03/2004 | CN1542833A Method for judging address data |
| 11/03/2004 | CN1542826A Phase frequency comparing equipment |
| 11/03/2004 | CN1542819A Oscillating clock generating circuit and method thereof |
| 11/03/2004 | CN1542818A Oscillating clock generating circuit and method thereof |
| 11/03/2004 | CN1542817A Oscillating clock generating circuit and method thereof |
| 11/03/2004 | CN1542779A Method for calibrating optical disk surface incline servo system and related optical disk access assembly |
| 11/03/2004 | CN1542765A A method for correcting CD write-in power and related device |
| 11/03/2004 | CN1542764A Method for deciding trial writing result parameter when correcting CD write-in power and related device |
| 11/03/2004 | CN1542760A Amplitude limiter for dynamic regulation of clip level |
| 11/03/2004 | CN1542759A Clock signal regulator |
| 11/02/2004 | US6812757 Phase lock loop apparatus |
| 10/28/2004 | WO2004093322A2 Digital phase-locked loop |
| 10/27/2004 | CN1540868A Frequency synthesizer of using all-digit frequency detector and analogue phase detector |
| 10/26/2004 | US6809597 Phase comparison method, phase comparison circuit, and phase locked loop (PLL) type circuit |
| 10/20/2004 | EP1205028B1 Loading pump |
| 10/19/2004 | US6806742 Phase detector for low power applications |
| 10/19/2004 | US6806741 Phase comparator capable of performing stable phase comparison for high frequency band |
| 10/19/2004 | US6806740 Reduced complexity linear phase detector |
| 10/14/2004 | US20040202271 Compact, low-power low-jitter digital phase-locked loop |
| 10/14/2004 | US20040202017 Low-current and high-speed phase-change memory devices and methods of driving the same |
| 10/13/2004 | CN1536688A Low current and high speed phase change storage device and method for driving it |
| 10/12/2004 | US6804318 System and method for using a network timing reference circuit as a phase detector in a synchronization loop |
| 10/07/2004 | WO2004086605A1 Linear phase detector with multiplexed latches |
| 10/07/2004 | WO2004086604A1 Fast linear phase detector |
| 10/07/2004 | WO2004086603A1 Frequency detector system with tri-state frequency control signal |
| 10/07/2004 | US20040196171 Switched-capacitor frequency-to-current converter |
| 10/05/2004 | US6801094 Phase comparator |
| 10/05/2004 | US6801062 Output circuit |
| 09/29/2004 | EP1116323A4 Lock-in aid frequency detector |
| 09/29/2004 | CN1169297C Method for performing phase comparison, and phase comparator |
| 09/29/2004 | CN1169296C PLL circuit and radio communication terminal using PLL |
| 09/28/2004 | US6798372 Switched-capacitor frequency-to-current converter |
| 09/23/2004 | WO2004082145A1 Phase-locked loop circuit |
| 09/23/2004 | WO2004082144A1 Phase-locked/frequency-locked loop and phase/frequency comparator therefor |
| 09/23/2004 | US20040183570 Phase comparator capable of performing stable phase comparison for high frequency band |
| 09/23/2004 | DE10311049A1 Phase/frequency control loop has reset logic unit whose output signal is only activated/deactivated if both output signals of two edge-triggered memory units are activated/deactivated respectively |
| 09/08/2004 | CN1166109C Phase difference magnifier |
| 09/02/2004 | US20040169536 Phase indication apparatus |
| 08/31/2004 | US6785354 Lock detection system for use in high speed communication systems |
| 08/26/2004 | US20040164777 Comparator |
| 08/19/2004 | US20040159753 Collapsible display system |