Patents for H03L 7 - Automatic control of frequency or phase; Synchronisation (37,643)
02/2005
02/10/2005US20050030108 Integrated VCO having an improved tuning range over process and temperature variations
02/10/2005US20050030082 Phase mixer that compensates for frequency variations and PVT a control method thereof
02/10/2005US20050030076 Distributed delay-locked-based clock and data recovery systems
02/10/2005US20050030075 System and method for comparison and compensation of delay variations between fine delay and coarse delay circuits
02/10/2005US20050030074 Semiconductor device having PLL-circuit
02/10/2005US20050030073 Low jitter high phase resolution PLL-based timing recovery system
02/10/2005US20050030072 Fast lock phase lock loop and method thereof
02/10/2005US20050030071 Phase synchronization for wide area integrated circuits
02/10/2005US20050030064 Self-correcting i/o interface driver scheme for memory interface
02/10/2005US20050030001 PLL employing a sample-based capacitance multiplier
02/10/2005DE10331092A1 Phase synchronization arrangement for electronic measurement units, especially network or spectrum analyzers, whereby each unit has a frequency generator with a phase locked loop with the generator outputs linked to each other
02/10/2005DE10249886B4 Verfahren und Vorrichtung zum Erzeugen eines Taktsignals mit vorbestimmten Taktsingaleigenschaften Method and apparatus for generating a clock signal with predetermined Taktsingaleigenschaften
02/09/2005EP1505731A1 Direct conversion tuner capable of receiving digital television signals in UHF band and VHF band
02/09/2005EP1504596A2 High-resolution image projection
02/09/2005EP1405417B1 Fractional frequency divider
02/09/2005EP1312183A4 Apparatus and method for operating a master-slave system with a clock signal and a separate phase signal
02/09/2005EP1242860B1 Encoded clocks to distribute multiple clock signals to multiple devices in a computer system
02/09/2005EP1234374A4 Phase/frequency detector for dejitter applications
02/09/2005CN1578153A System capable of adjusting clock phase of ad converter
02/09/2005CN1578152A Low-pass filter and feedback system
02/09/2005CN1578151A Digital pll device
02/09/2005CN1578150A Phase locked loop circuit
02/09/2005CN1578149A Delay locked loop and method of driving the same
02/09/2005CN1578080A Semiconductor integrated circuit equipment
02/09/2005CN1577611A Delay locked loop (dll) circuit and method for locking clock delay by using the same
02/09/2005CN1188944C Apparatus for tracking resonant frequency
02/08/2005US6853696 Method and apparatus for clock recovery and data qualification
02/08/2005US6853261 Method and apparatus for calibrating voltage-controlled devices
02/08/2005US6853257 PLL circuit including a voltage controlled oscillator and a method for controlling a voltage controlled oscillator
02/08/2005US6853256 Voltage controlled oscillator with reference current generator
02/08/2005US6853254 Anti-deadlock circuit and method for phase-locked loops
02/08/2005US6853253 Load pump with an extremely wide output voltage
02/08/2005US6853252 Phase-lock loop having programmable bandwidth
02/08/2005US6853231 Timing vernier using a delay locked loop
02/08/2005US6853230 Method and apparatus for producing a clock output signal
02/08/2005US6853226 Register controlled delay locked loop having an acceleration mode
02/08/2005US6853225 Delay locked loop circuit with duty cycle correction function
02/08/2005US6853224 Method and device for improving efficiency of frequency synthesizer
02/08/2005US6853223 Phase comparator and clock recovery circuit
02/08/2005US6853222 Phase locked loop circuit having main and auxiliary frequency dividers and multiple phase comparisons
02/08/2005US6853221 Power-up detection circuit with low current draw for dual power supply circuits
02/08/2005US6851620 Floating actuator control system and method
02/08/2005US6851493 Digital PLL with gear shift
02/03/2005WO2005011118A2 A digital pulse width modulator
02/03/2005WO2005011102A1 Apparatus for generating clock pulses using a direct digital synthesizer
02/03/2005US20050028210 High frequency signal receiver
02/03/2005US20050028019 Delay locked loop with improved jitter and clock delay compensating method thereof
02/03/2005US20050027763 Harmonic detector system and method
02/03/2005US20050025276 Single point modulator having a PLL circuit
02/03/2005US20050025275 Apparatus of phase-frequency detector
02/03/2005US20050025260 Structures and methods for capturing data from data bit streams
02/03/2005US20050024999 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
02/03/2005US20050024158 Voltage controlled oscillator programmable delay cells
02/03/2005US20050024157 Adaptive Kalman Filter Process for controlling an ensemble clock
02/03/2005US20050024156 Ensemble oscillator and related methods
02/03/2005US20050024155 Jitter-less phase detector in a clock recovery circuit
02/03/2005US20050024154 Controlled oscillation module
02/03/2005US20050024153 Apparatus for removing offset of phase locked loop circuit and method thereof
02/03/2005US20050024152 Gain compensated fractional-N phase lock loop system and method
02/03/2005US20050024151 Digitally controlled tuner circuit
02/03/2005US20050024118 Clock generator
02/03/2005US20050024112 Pulse width modulated common mode feedback loop and method for differential charge pump
02/03/2005US20050024111 Device for calibrating a clock signal
02/03/2005US20050024108 System and method to improve the efficiency of synchronous mirror delays and delay locked loops
02/03/2005US20050024107 Delay circuit and delay sysnchronization loop device
02/03/2005US20050024106 Charge pump system for fast locking phase lock loop
02/03/2005US20050024105 Clock generator with skew control
02/03/2005US20050024094 Rotational frequency detector system
02/02/2005EP1503500A1 A phase-locked loop
02/02/2005EP1502358A2 A serial to parallel and parallel to serial data transceiver
02/02/2005EP1444783A4 Cascaded delay locked loop circuit
02/02/2005CN1574888A Clock signal generation apparatus
02/02/2005CN1574641A Spread spectrum clock generator capable of frequency modulation with high accuracy
02/02/2005CN1574640A Switched capacitor circuit capable of eliminating clock feedthrough for vco
02/02/2005CN1574639A Clock generation circuit capable of setting or controlling duty ratio of clock signal and system including clock generation circuit
02/02/2005CN1574638A Low-pass filter and phase locked loop
02/02/2005CN1574637A Digital frequency control circuit, phase control circuit, pll circuit
02/02/2005CN1574635A 振荡器 Oscillator
02/02/2005CN1574629A 时钟和数据恢复电路 Clock and data recovery circuit
02/02/2005CN1574615A Feedback control system and method
02/02/2005CN1574086A 数字延迟锁定回路及其控制方法 Digital delay locked loop and its control method
02/02/2005CN1573948A Information recording and reproducing apparatus
02/02/2005CN1187964C Network for eleiminating DC offset in a received HDTV signal
02/02/2005CN1187900C System with adjustable A/D converter clock phase
02/02/2005CN1187899C Systems and method for retaining circuit in phase locked loop
02/01/2005US6850584 Clock regeneration circuit and optical signal receiver using the same
02/01/2005US6850583 Clock generation apparatus
02/01/2005US6850581 Timing circuit
02/01/2005US6850554 Circuit and method for controlling a spread spectrum transition
02/01/2005US6850124 Circuit, architecture and method for tracking loop bandwidth in a frequency synthesizer having a wide frequency range
02/01/2005US6850121 TDMA transmit frequency generator suppressing frequency jumps caused by feedback
02/01/2005US6850107 Variable delay circuit and method, and delay locked loop, memory device and computer system using same
02/01/2005US6850106 Voltage controlled oscillator delay cell
02/01/2005US6850102 Apparatus for calibrating a charge pump and method therefor
02/01/2005US6850101 Single-line synchronizable oscillator circuit
02/01/2005US6849488 Physically defined varactor in a CMOS process
01/2005
01/27/2005WO2005008895A1 Charge pump circuit
01/27/2005WO2005008894A1 Delay locked loop for generating multi-phase clocks without voltage-controlled oscillator
01/27/2005WO2004105249A3 Voltage shift control circuit for pll
01/27/2005WO2004051855A3 Arrangement, phase locked loop and method for noise shaping in a phase-locked loop