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8917113 Phase detection device and phase detection method  
A phase detection device includes a clock divider configured to divide a clock signal and generate a plurality of divided clock signals, a recoverer configured to generate a recovered clock signal...
8786315 Phase frequency detector  
The present invention relates to a phase frequency detector (PFD) (100) for use as one of the blocks in a phase-locked loop. The PFD of the present invention has zero dead zone, has a simpler...
8604840 Frequency synthesizer noise reduction  
A method for reducing noise in a frequency synthesizer includes selecting a design variable k, calibrating a feedback time delay (Td), such that Td=kTVCO, where TVCO is the period of the...
8552694 Generator device with overvoltage monitoring  
A generator device with a generator regulator and a generator unit having a generator and a rectifier arrangement. The generator regulator has an operating voltage connection and a phase voltage...
8415983 Digital phase comparator  
A digital phase comparator is provided in which first phase difference signals and second phase difference signals are used as digital phase difference information. The first phase difference...
8354867 Phase-locked loop circuit and an associated method  
The present invention relates to a PLL circuit and an associated method that allows the PLL circuit to operate at a higher operating frequency with a wider bandwidth and a better out-band noise...
8350595 Semiconductor integrated circuit and control method for clock signal synchronization  
There is a need to ensure operation performance of a circuit region under DVFS control at low costs and highly precisely while a power-supply voltage change is made to the region. A first circuit...
8248104 Phase comparator and phase-locked loop  
A phase comparator is provided that solves the problem that a VCO cannot be controlled with high precision. A frequency divider frequency-divides a VCO signal applied as input to an input terminal...
8179163 Method and apparatus for charge pump linearization in fractional-N PLLs  
Efficient techniques improve the linearity of a charge pump in fractional-N PLLs. A feedback clock pulse several VCO clock periods wide is formed and supplied to a phase frequency detector (PFD)....
8138800 Phase detecting circuit and PLL circuit  
A phase detecting circuit includes a latch circuit that switches, based on an OR signal and an AND signal of two clock signals to be subjected to phase comparison, one of outputs used for...
8081013 Digital phase and frequency detector  
A method for digital phase detection, comprises the steps of: providing a reference clock; receiving a feedback clock; determining a timing difference between the reference clock and the feedback...
8076979 Lock detection circuit for phase locked loop  
A lock detector circuit for detecting a lock condition between a reference signal and a feedback signal includes a first counter for outputting a first counter value indicative of a number of...
8059708 Pulse width digitizing method and pulse width digitizer using thereof  
A pulse width (PW) digitizer comprises a current pump, a capacitor, a quantizer, a feedback controller, and a digital filter. The current pump provides a current signal in response to a PW signal....
8058915 Digital phase-locked loop and digital phase-frequency detector thereof  
A digital phase-locked loop and a digital phase-frequency detector thereof are provided. The digital PFD includes a divisor switch unit, a low-resolution phase-error detecting unit, an...
8013636 Synchronous phase detection circuit  
A phase detection circuit determines phase difference between a periodic signal and a reference signal of substantially equal frequency. The circuit includes: a source input receiving the periodic...
7999577 Apparatus and method for detecting a changing point of measured signal  
Provided is an apparatus comprising a delaying section that generates a plurality of delayed signals by delaying a single first input signal by different delay amounts; a first acquiring section...
7969202 Fractional-N frequency synthesizer  
A circuit, with applications to phase-locked loops and frequency synthesis, where a divider circuit shuffles between dividing the output of a voltage-controlled oscillator by N or N+1, where N is...
7952841 Device for detecting malfunctions by manipulation of an internal voltage supply  
A device for determining an interference with a regulated voltage provided by a control loop with a unit for monitoring a control variable of the control loop and a unit for generating a...
7940088 High speed phase frequency detector  
Apparatus and methods detect missing clock edges. An improved phase frequency detector (PFD) can be used in, for example, a phase locked loop (PLL) or a delay locked loop (DLL). Conventional PFDs...
7936348 Methods and apparatuses using control indicators for data processing systems  
A control indication assembly. A first control mounted on a surface of a computer is coupled to a first sensor, to a first sensing circuit to send an electrical signal to the first control when a...
7919999 Band-gap reference voltage detection circuit  
Methods, devices, modules, and systems for a band-gap reference voltage detection circuit are provided. One embodiment for a band-gap reference voltage detection circuit includes a Brokaw cell...
7904272 System and method for calculating coordinate values of a measuring machine  
A method for calculating coordinate values of a measuring machine is provided. The method includes receiving signals in three dimensions from a raster ruler signal generator, identifying a...
7898307 Phase detector circuitry  
A phase-locked loop frequency synthesizer including phase detector circuitry and divider circuitry producing a divided signal. The phase detector circuitry receives a reference signal, a divided...
7893724 Method and circuit for rapid alignment of signals  
Circuits and methods for aligning two or more signals including a first and second signal. In one embodiment, a shift register generates two or more shifted copies of the second signal, and each...
7885361 Method and apparatus for 0/180 degree phase detector  
An embodiment of the present invention provides a system for detecting a phase-shifted signal at high frequencies in data and clock recovery circuitry. An up-pulse generator, in one embodiment,...
7855580 Phase comparator, phase synchronizing circuit, and phase-comparison control method  
A phase comparator includes an edge detecting unit to which a reference signal is input and to which a referred signal based on the reference signal is input as a feedback signal. The edge...
7847641 Digital phase and frequency detector  
Disclosed are a digital phase-frequency detector and a method of operating a digital phase-frequency detector. The detector includes an input circuit, an output circuit and a reset circuit. In...
7839177 Techniques for phase detection with fast reset  
A phase detector includes transistors that generate first and second phase error signals. The phase detector resets the first phase error signal in response to at least one of the first and the...
7839178 High speed digital phase/frequency comparator for phase locked loops  
An apparatus and method for detecting a phase difference between an input signal and a reference signal in an all-digital phase locked loop (PLL) are provided. In a preferred embodiment, an...
7834664 Semiconductor device for detecting a phase of a clock  
A semiconductor, which includes a first phase detecting unit configured to detect a phase of a second clock on the basis of a phase of a first clock, and generate a first detection signal...
7821301 Method and apparatus for measuring and compensating for static phase error in phase locked loops  
A method and circuit for static phase error measurement includes a reference clock delay chain having a selectable number of delay elements. A number of the delay elements are enabled in...
7812644 Digital frequency detector and digital phase locked loop using the digital frequency detector  
A digital frequency detector and a digital phase locked loop (PLL) are provided. The digital frequency detector includes a first conversion unit which outputs a first frequency as first frequency...
7795926 Phase detector for half-rate bang-bang CDR circuit  
A phase detector, including a sampling device, a comparing device, and an output device, is provided. The sampling device samples a data signal according to a plurality of clock signals, so as to...
7769121 Phase detector for data communications  
In one embodiment, a phase error signal generated by a phase detector is equalized to compensate for the distortion in the phase error signal due to finite circuit speeds. The equalization may be...
7764759 Linear sample and hold phase detector for clocking circuits  
Linear sample and hold phase detectors are disclosed herein. An example phase detector is coupled to an input data signal and a recovered clock signal and includes a linear phase difference...
7755397 Methods and apparatus for digital phase detection with improved frequency locking  
Methods and apparatus are provided for digital phase detection with improved frequency locking. A phase detector is disclosed for evaluating a phase difference between a clock signal and a...
7750683 Phase/frequency detector  
PFD includes UP and DOWN signal modules, and RESET signal module. UP and DOWN signal modules transmit UP and DOWN signals according to reference and fed-back clock signals. RESET module includes...
7728631 Phase frequency detector with pulse width control circuitry  
A phase frequency detector comprising a detection circuit and a reset circuit. The phase frequency detector may receive a feedback signal having a predetermined pulse width. The detection circuit...
7721137 Bus receiver and method of deskewing bus signals  
A bus receiver receives at least one first signal and a second signal both generated from a chip connected to a parallel bus. The bus receiver includes a receiving module and a deskewing module....
7683680 Combined phase comparator and charge pump circuit  
A phase comparison of timing signals is made by combinational circuitry which receives the timing signals and a window signal, the window signal identifying edges of the timing signals to be...
7675328 Phase detection apparatus and phase synchronization apparatus  
A feedback circuit includes a third variable delay device that controls the amount of phase delay of a first clock; a third logic gate that detects a phase difference between the first clock...
7675335 Phase detecting module and related phase detecting method  
A phase detecting module includes a phase detecting unit, a comparator and a counter. The phase detecting unit is arranged to compare a first input signal and a second input signal to generate a...
7639048 System and method of detecting a phase, a frequency and an arrival-time difference between signals  
A system and method for detecting a phase and a frequency and an arrival-time difference between two signals (118 and 120) that minimizes delay and jitter, and has stable operation even when the...
7629818 Method for checking the integrity of a clock tree  
A method and device detect synchronization errors between logic signals of a group of logic signals. A control word is loaded into a shift register arranged in loop and clocked by resulting logic...
7622960 Metastable-resistant phase comparing circuit  
A phase comparing circuit includes a first storage circuit for reading an external clock signal based on a control clock signal; first and second inverters for inverting a signal from the first...
7616065 System and method for charge-pump with phase-frequency detection capability  
A method of generating a correction signal for a voltage controlled oscillator (VCO) includes receiving a first signal in a correction current generator, changing a state of a first error signal...
7598775 Phase and frequency detector with zero static phase error  
A method and circuit for phase and frequency detection having zero static phase error for use in a phase-locked loop system is presented. The phase and frequency detector utilizes a first phase...
7586335 Digital phase detector and a method for the generation of a digital phase detection signal  
The present invention concerns a digital phase detector (PD) and also a method for digital phase detection, as can in particular be used e.g. in a so-called phase locked loop (PLL). According to...
7463099 Phase detector for reducing noise  
The present invention provides a method and an apparatus for reducing noise. The apparatus includes a phase detector adapted to determine a phase difference between a first and a second signal, a...
7463069 Phase detector with selection of differences between input signals  
Known phase detectors have feedbackloops and do not function properly under severe conditions. By providing said phase detectors with difference establishers (1) for establishing differences...