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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)....
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...
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...
8008946 Semiconductor integrated circuit  
A first counter detects a rising edge of a clock signal, and generates a first signal having a multiplied cycle of the clock signal. A second counter detects a falling edge of the clock signal, and...
7978800 Circuit for converting a transponder controller chip output into an appropriate input signal for a host device  
A translation circuit for mediating between a fiber-optic controller chip and a host device. The translation circuit may be on a fiber-optic transponder. The controller chip includes a phase locked...
7919991 Comparator circuit  
A comparator circuit is disclosed that determines whether a first binary value is greater than, equal to, and/or less than a second binary value without employing binary adder circuits, and...
7882473 Sequential equivalence checking for asynchronous verification  
Mechanisms for performing sequential equivalence checking for asynchronous verification are provided. A first model of the integrated circuit design is provided that has additional logic in it to...
7868678 Configurable differential lines  
Embodiments related to configurable differential lines are disclosed herein.
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 use,...
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 N-stage...
7795924 Phase detecting module and detecting method thereof  
A phase detecting module capable of optimizing detection accuracy and noise robustness, and a detecting method, are included. The phase detecting module includes a phase detecting circuit, an...
7791377 Hierarchical time to digital converter  
A time to digital converter having a hierarchical structure is provided. The time to digital converter includes: a plurality of delay stages for sequentially delaying a first signal for a specific...
7777527 Phase detection apparatus  
There is provided a phase detection apparatus that can accurately detect a phase difference between an input signal and a reference signal even when the input signal and the reference signal have...
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...
7733999 System and method for an adaptable timing recovery architecture for critically-timed transport applications  
The present invention provides a timing recovery architecture and circuit for recovering the clock timing from a received signal in critically-timed transport applications. The present invention...
7616034 Circuit for controlling data output  
Disclosed is a data output control circuit for controlling data output. The data output control circuit includes a delay lock loop for outputting a first clock by delaying an external clock in...
7609092 Automatic phase-detection circuit for clocks with known ratios  
An automatic phase detection circuit for generating an internal synchronization signal when two clock input signals achieve a certain phase relationship. No external reference signal is required....
7564315 System and method for pre-charged linear phase-frequency detector  
A method for comparing phases of two signals including placing a first output node in a floating state, detecting a first edge of a first signal on a first input node after placing the first output...
7548470 Memory control method and memory control circuit  
A memory control method includes: latching a clock signal to selectively generate a phase lead detection result and a phase lag detection result in response to a data strobe signal; delaying the...
7535273 Phase-locked loop circuit, delay locked loop circuit, timing generator, semiconductor test instrument, and semiconductor integrated circuit  
A PLL and DLL are designed such that the power consumption can be reduced, the size can be easily reduced, the band of the locked loop can be a higher one, and the reliability can be improved....
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...
7456661 Phase-locked/frequency-locked loop and phase/frequency comparator therefor  
A phase/frequency comparator is described which includes two edge-triggered storage elements, each set by an edge of a reference frequency signal of a phase—or frequency-locked loop (PLL) and by a...
7449962 Phase-controlled current source for phase-locked loop  
A phase-controlled current source for phase-locked loop is provided. The phase-locked loop includes a voltage-controlled oscillator to associate a charging path or discharging path in order to...
7450443 Phase detection method, memory control method, and related device  
A phase detection method for detecting a phase difference between a data strobe signal and a clock signal, includes: latching the clock signal according to the data strobe signal to generate a...
7443251 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 use,...
7425851 Phase-locked loop with incremental phase detectors and a converter for combining a logical operation with a digital to analog conversion  
The invention relates to a phase-locked loop comprising a voltage controlled oscillator and having a frequency control input for controlling the frequency of the output signal. The phase-locked...
7411426 Phase detector for RZ  
A phase detector is adapted to receive first and second signals and generate third and fourth signals representative of the difference between the phases of the first and second signals. The phase...
7400204 Linear phase detector and charge pump  
A phase detector detects a phase difference between a first and second signal received by a phase detector. A charge is supplied by a charge pump circuit that corresponds to the phase difference...
7310397 Data recovery circuit, phase detection circuit and method for detecting and correcting phase conditions  
In the data recovery circuit of the invention, a first group of sampling clock pulses is used for sampling approximately the central portions of the data bits in an incoming data stream to produce...
7286625 High-speed clock and data recovery circuit  
A 40-Gb/s clock and data recovery (CDR) circuit incorporates a quarter-rate phase detector and a multi-phase voltage controlled oscillator to re-time and de-multiplex a 40-Gb/s input data signal...
7271622 Quadrature voltage controlled oscillators with phase shift detector  
In wireless application there is made use of a quadrature oscillators that generate signals that are capable of oscillating at quadrature of each other. The quadrature oscillator is comprised of...
7263151 High frequency loss of signal detector  
Methods and circuitry for implementing high speed loss-of-signal detectors for use in Gb/s telecommunication applications. The invention measures bit error rate (BER) of the incoming data by...
7227919 Data sampler for digital frequency/phase determination  
A digital circuit and method for forming number streams for frequency and/or phase comparison of digital or digitized signals, referred to herein as clock signals, where typically one of the clock...
7203259 Phase interpolator  
An arrangement for generating a clock signal. Embodiments provide a method, apparatus, system, and machine-readable medium to interpolate phases of a reference clock signal to output an...
7183810 Circuit and method for detecting phase  
A circuit for detecting phase includes a first inverter, a second inverter, a differential amplifier, an output load latch and an output latch. The first and second inverters receive an input...
7109806 Device and method for detecting phase difference and PLL using the same  
A phase detector includes a first control unit and a second control unit to generate a first control pulse and a second control pulse representative of a phase difference between a reference signal...
7087890 Rotating-body control device  
A P-ECU controls an actuator which drives a shift control mechanism. An encoder signal acquisition unit acquires signals output from an encoder which detects a rotational angle of the actuator. A...
7078938 Method of detecting phase difference, phase detector for performing the same and clock-and-data recovering device including the phase detector  
First and fourth phase difference signals, and first and second phase difference information signals respectively having first, fourth, second and third phase differences may be generated using an...
7071744 Apparatus and method for detecting a phase difference  
A method for detecting a phase difference between a first input signal and a second input signal is provided. The method contains: detecting the phase difference of the first and the second input...
7073098 Multi-phase clock generation circuit and clock multiplication circuit  
A circuit is provided to prevent improper locking of a DLL circuit without providing any limitation to the reference clock frequency. By detecting the time difference between edges of multi-phase...
7061276 Digital phase detector  
A high performance phase detector includes a local digital oscillator for generating a digital reference signal of programmable frequency and phase. The phase detector accumulates a difference in...
7009431 Interpolator linearity testing system  
According to some embodiments, an interpolated clock signal having a first frequency is received, and the interpolated clock signal is periodically sampled based on a reference clock signal to...
7002376 Phase detector for a programmable clock synchronizer  
A phase detector in a programmable clock synchronizer for effectuating data transfer between first circuitry disposed in a first clock domain that is clocked with a first clock signal and second...
6970020 Half-rate linear quardrature phase detector for clock recovery  
A half-rate linear phase detector is particularly well-suited to clock data recovery in a serial data interface. The phase detector uses a quadrature clock to process different portions of the...
6950956 Integrated circuit with timing adjustment mechanism and method  
An integrated circuit device includes a receiver, a register and a clock circuit. The receiver samples data from an external signal line in response to an internal clock signal. The register stores...
6943601 Method and device for phase detection  
A phase detection system is used in particular in a Delay-Locked Loop (DLL) to generate, as a function of phase differences of different signals (1, 2, 3), at least one control signal for changing...
6925428 Multifunctional, multi-input, missile signal measurement apparatus  
A printed wiring board includes an input conditioner having a plurality of analog dc inputs and a plurality of analog dc outputs; a switching circuit having an analog dc output, the switching...
6911820 Phase detection device, dial type detection device, and phase detection method  
A phase detection device with low power consumption capable of accurately detecting that an object has moved, and returning from an intermittent energized mode to an always energized mode is...
6888379 Phase comparator circuit  
A phase detector circuit that prevents a significant loss of lock during input of CIDs (Consecutive Identical Digits) and has a high linearity of a phase to voltage conversion characteristic around...
6853223 Phase comparator and clock recovery circuit  
The present invention aims at providing a phase comparator and a clock recovery circuit suitable for applications that support data signals with high-speed bit rates in the order of one gigabit per...
Matches 1 - 50 out of 295 1 2 3 4 5 6 >