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Patent Searching and Data


Matches 101 - 150 out of 2,133

Document Document Title
WO/2002/042782A1
An input signal is a complex vector whose phase is a coherent measurement of the phase rotation occurring between two separated symbols of a received CDMA signal. A processing block (30) provides a first signal showing the magnitude and ...  
WO2001033240A3
A high resolution skew detector including multi-phase input circuitry is disclosed. The input circuitry has a reference signal input and a skew signal input and is adapted for receiving in-phase and/or out of phase skew signals. In respo...  
WO/2001/098937A1
A method of processing a high frequency signal containing at least two different fundamental frequencies F1 and F2 and their harmonic components in order to extract at least one harmonic component of each of the two fundamental frequenci...  
WO/2001/071367A1
A method and apparatus for measuring quantities of a multi-phase electric line, the apparatus comprising a control unit (7) and a measurement unit (4, 5, 6) in connection with each phase conductor (1, 2, 3) of the electric line, wherein ...  
WO/2001/038888A1
An apparatus and method for measuring jitter while controlling the timing of a clock signal to a measuring point of jitter in a short time. The apparatus has a thinning circuit (22) for limiting the number of passing clock signals on a c...  
WO/2001/033240A2
A high resolution skew detector including multi-phase input circuitry is disclosed. The input circuitry has a reference signal input and a skew signal input and is adapted for receiving in-phase and/or out of phase skew signals. In respo...  
WO/2001/020350A1
The invention relates to a phase detector, comprising at least two diodes (V1, V2), connected in series, to which a reference signal (U1) is supplied via a transformer (UT). In addition, the diodes (V1, V2) are connected to a decoupling ...  
WO/2000/033230A1
A system and method for improving the ability of an electronic meter (14) to make measurements on signals to determine content of different frequencies, and harmonics of the fundamental frequency, of AC signals (voltages and currents). T...  
WO/2000/019077A1
Disclosed is a phase recognition device for an internal combustion engine, whereby only one crankshaft signal sensor is provided and the phase signal is obtained by predeterminable suppression of injections for specific cylinders and sim...  
WO/1999/046608A1
A method for presenting information and a digital storage oscilloscope are disclosed in which primary measurements of a signal are performed and displayed. Parameters are also derived for the signal based upon the primary measurement dat...  
WO/1999/036792A1
A self-compensating phase detector using two identical phase detectors (21, 22) introducing one of the phase detectors and a control variable phase shifter (20) in a negative feedback loop (23) shifts one clock signal enough such that sh...  
WO/1999/032892A1
Method for unambiguous detection in an interval of 360° of the difference in phase between a first (V¿1?) and a second (V¿2?) electrical signal at essentially the same frequency, according to which method both the first and the second...  
WO/1999/029077A1
A phase digitizer and method with error compensation is provided that utilizes recordings from a digitally generated phase reference to measure the relative time between events, such as, for example, between the input zero crossing and s...  
WO/1999/018691A1
The present invention provides a simple all digital method and apparatus (fig. 4) for determining the phase of a first clock signal (Fs) relative to a second clock signal (Fs). The first clock signal (Fs) may be a digital approximation o...  
WO1998054584A3  
WO1998052284A3  
WO/1999/001812A1
A circuit (10) for determining periods of and the phase relationship between waveform signals (28 and 30). A delay line (12) having a sample port (14), a set port (16), a reference port (18), and an output port (20) and further internall...  
WO/1998/054584A2
A two port handheld VNA enabling both reflection and transmission measurements to be made over a range of 25 MHz to 3.3 GHz frequency range. The handheld VNA includes a tracking synthesizer (420) which generates an LO signal without a di...  
WO/1998/052284A2
The invention relates to a phase detector arrangement for use in a phase locked loop circuit, for recovery of clock and data pulses from a data stream comprising Return to Zero RZ signals comprising digital data. The arrangement comprise...  
WO/1998/034128A1
Apparatus for measuring the phase of a predetermined incoming data sequence comprising sampling means operable under control of a sampling clock to sample the incoming sequence at a frequency not equal to an integer multiple or divisor o...  
WO/1998/013936A1
So far, lateral pnp-transistors were not fitted to high frequency charging pumps. As a solution, the invention suggests that two transistor-resistor modules (T4, R2; T3, T1) be controlled by emitter-coupled transistors (T1, T2) with a di...  
WO/1998/000722A1
A digital frequency detector (10) and method for digitally detecting arbitrarily small phase changes between a signal waveform and a reference waveform. Both the reference waveform and the signal waveform are sampled at a rate related to...  
WO1997045709A3  
WO/1997/045709A2
The system and method of the present invention generates high resolution phase measurements without the high processing and memory overhead requirements found in prior art circuits and methods. Each signal sample (of N samples) is divide...  
WO/1997/030357A1
In accordance with a first aspect of the invention a phase detector for measuring phase differences between K input signals is provided. The phase detector comprises a counter, K first registers and a first subtractor. Each first registe...  
WO/1996/034299A1
An interrogator (10) for use with a passive transponder (12) has a Colpitts oscillator (30, 32, 34, 36, 38) arranged to vary in frequency in accordance with the frequency of a signal from the transponder; a voltage controlled oscillator ...  
WO1991008493A3  
WO/1996/019735A1
A handheld vector network analyzer (VNA) (300) providing a wide bandwidth test signal Fo utilizing a narrowband test signal synthesizer (700) which provides the test signal through a frequency divider (710) or harmonic generator (802). W...  
WO/1996/016336A1
The present invention relates to a measuring method and a system of phase angle of electrical system sinusoidal quantities, the method includes selecting a key station as a reference station, other stations desired to be measured as sub-...  
WO/1996/013919A1
A method and apparatus is disclosed for use in an implantable device that communicates with an external device through pulse position modulation. A timing generator is provided as part of said implantable device that determines the phase...  
WO/1996/012969A1
A numerical comparator (20) is disclosed. The numerical comparator (20) employs numerical techniques based upon the behavior of the cylinder unit (18) to compare phasors in real time. In one application of this invention, the torque sign...  
WO/1996/003659A1
A process is disclosed for measuring the phase jitter of a data signal by means of a phase demodulator that uses a predetermined clock signal. In order to measure the phase jitter in a relatively simple but accurate manner, the data sign...  
WO/1996/001007A1
The invention relates to measuring in an accurate way, e.g. in a communication system, the phase difference of two periodic input signals (INA, INB) having essentially the same frequency (fi), with a high resolution and utilizing digital...  
WO/1995/029479A1
Methods and systems for beamforming are disclosed that include a signal processor that can dynamically determine the relative time delays between a plurality of frequency-dependent signals. The signal processor can adaptively generate a ...  
WO/1995/022064A1
A phase detector is described that includes a load circuit that presents both a high differential impedance and a low common mode impedance. The load circuit is coupled to (1) a power supply and (2) a first node and a second node. The fi...  
WO/1995/018384A1
The invention concerns a digital phase detector for the determination of phase shifts between a comparison clock signal (VT) and a reference clock signal (RT). First means (STA, STO) generate start and stop signals from the pulses of the...  
WO/1995/014236A1
Proposed is a device for the determination of the phase difference between a first and a second digital input signal (S1, S2). A first embodiment calls for the generation of a clock signal (CLOCK) which is fed as the first (counter) sign...  
WO1995006854A3  
WO/1995/006854A2
A magnetic flowmeter comprises a first electric circuit (6) providing a first alternating electrical signal generated mostly by an electromagnetic interaction between an alternating magnetic field and the velocity of an electrically cond...  
WO/1995/006260A1
A transmitting box (101) is connected to a first electrical outlet in a building. The phase of the first electrical outlet is used as the reference phase. The transmitter box senses each of the zero-cross-overs of the reference phase and...  
WO/1994/011744A1
This invention gives a very precise and simple digital circuitry as well as basis for software to measure the phase difference between harmonic components of any of two of the input signals. The apparatus may be used also for measuring t...  
WO/1994/003818A1
A method and apparatus for rapidly and continuously sampling AC voltage and current signals in a plurality of power distribution circuits. The sampled signals are then analyzed in a sine board computer to derive the number of fundamental...  
WO/1991/014329A1
An electrical circuit for producing a digital value which is representative of instantaneous phase of an electrical input signal relative to a reference frequency signal. The circuit includes a digital counter for continuously generating...  
WO/1991/008493A2
Method and device for comparing analog signals by transformation of analog signals into binary logic signals, detection of zero crossings by means of comparators (30), and providing a correlation signal by means of a logical circuit (32)...  
WO/1991/005422A1
A phase-detector circuit for a phase-locked loop clock recovery system detects the phase difference between an information signal and a clock signal and produces a phase error signal representative of the phase difference. The phase dete...  
WO/1990/015482A1
A digital phase detector (500) for providing an output (520) characterized by the phase difference of a first input signal (175) and a second input signal (275) is provided. The phase detector comprises a first (200) and a second (300) d...  
WO/1990/013040A1
The invention relates to a method and an apparatus for accurate digital determination of the time or phase position of a signal pulse train in relation to a fixed time or frequency reference. The arrangement generates and produces direct...  
WO/1989/009450A1
A method and apparatus for evaluating the performance of a device, such as a quadrature encoder (14), wich generates at least two electrical wave train signals (10, 11), each varying between first and second states and the two normally b...  
WO/1989/001634A1
A method for measuring channel-to-channel skew or phase difference in an electronic system of the type having a plurality of input channels which are sampled by sampling pulses having a frequency fo and a period Po. The sampling pulses a...  
WO/1988/010432A1
A method for removing phase errors from RF signals generated by movement of the cable interconnecting a network analyzer (22) and a device under test (14). The method includes the steps of measuring (30) the phase difference between inci...  

Matches 101 - 150 out of 2,133