Matches 301 - 350 out of 379 < 1 2 3 4 5 6 7 8 >


Match Document Document Title
5940782 Method of calibrating a linear driver system  
A method of calibrating a linear driver system including a linear driver circuit, logic means connected to an input line of the linear driver circuit, and information storage means associated with...
5933797 Adaptive dual filter echo cancellation  
A digital signal processor that is used for echo cancellation computations is disclosed, which includes parallel multiplier/adders, an input signal sample memory, and a plurality of accumulators...
5897608 Compensating apparatus and method for signal processing circuit  
A compensating method and apparatus is provided which collectively compensates for variations in a variety of characteristics in respective circuit portions of a signal processing circuit. A...
5848383 System and method for precision compensation for the nonlinear offset and sensitivity variation of a sensor with temperature  
A method and system for calibrating a sensor is disclosed The method and system include receiving data relating to a plurality of temperature parameters and providing polynomial compensation of a...
5784299 Method for measuring electronic devices under test with a network analyzer  
For measuring electronic devices under test with a network analyzer, the electronic devices to be embedded into a linear auxiliary network during their operation, as well as, during the...
5757677 Compensation for differences in receiver signals and in satellite signals  
Method and apparatus for compensating for the differences in time varying signals S(t;R;S) received and processed by two signal receivers (R2 and R3), located at the same site, from two signal...
5757654 Reflective wave compensation on high speed processor cards  
Packaged signal routing circuits (e.g. on printed circuit cards or boards), route pulse signals with very short rise times from a lossy driver to multiple devices. In these routing circuits, a...
5734596 Self-calibrating and remote programmable signal conditioning amplifier system and method  
A self-calibrating, remote programmable signal conditioning amplifier system employs information read from a memory attached to a measurement transducer for automatic calibration. The signal...
5666059 Method for calibrating a network analyzer according to the fifteen-term principle  
In a method for calibrating a network analyzer having two test ports and at least four measuring locations according to the fifteen-term principle, correction values that are taken into...
5661404 Circuit network measurement device and calibration method  
A system and a method are presented which reduce the number of times of connection and disconnection of calibration standards in a circuit network measurement device provided with many measurement...
5648918 Calibration of a plurality of excitation sources for an instrumentation system  
A calibration system for calibrating a plurality of excitation sources of an instrumentation system. The calibration system allows a single calibration adjustment for calibrating all of the...
5642298 Wafer testing and self-calibration system  
A measurement station which rotates a wafer in a vertical plane and moves a scanning sensor linearly along an axis which is parallel to the wafer rotation plane, thus providing a spiral, or other,...
5638296 Intelligent circuit breaker providing synchronous switching and condition monitoring  
An intelligent circuit breaker or switching device system comprises three separate microprocessor-based units, including a condition monitoring unit (CMU) 40, a breaker control unit (BCU) 50, and...
5619142 Technique for calibrating a transformer element  
Disclosed herein is a transformer assembly, comprising a toroidal transformer element including a ring and a secondary winding wound around the ring; the ring being arranged to receive a main...
5608330 Method for calibrating a network analyzer according to the seven-term principle  
A method calibrates a network analyzer having two test ports and at least four measuring locations by successive measurement of the transmission and reflection parameters at three calibration...
5581488 Apparatus and method for compensating for noise in signals  
Signal compensation apparatus and method compensates for and removes errors due to error factors included in source signals x and y approximated by the sine function and cosine function,...
5574664 Method for calibrating computer monitors used in the printing and textile industries  
An apparatus for calibrating color settings of a computer monitor to cause a proofed image, i.e., a prepress image, to essentially match a printed image on a particular medium, allowing the...
5550449 Process for driving electric, current-controlled actuators  
The process has an open control loop which detects the total current intensity of actuators and supplies it to a microprocessor. In a modulation mode the microprocessor successively generates at...
5539305 Calibration board for an electronic circuit tester  
An electronic circuit tester for measuring the response of electrical signals applied to an electronic circuit under test is provided with a calibration board for effecting calibration of the...
5532584 MR sensor including calibration circuit wherein signals are averaged for determining a correction factor and pole pieces are shaped to reduce field in gap therebetween  
A magnetic assembly for detection and authentication of magnetic documents. The magnetic assembly includes a permanent magnet (PM), first and second magnetically soft high permeability pole pieces...
5532582 Analog input apparatus  
An analog input apparatus comprises bridge measuring devices 11 and 31 connected to a bipolar voltage power supply 5, analog multiplexers 18, 19, 38, and 39 responsive to an output level of an...
5523959 Ice detector and deicing fluid effectiveness monitoring system  
An ice detector and deicing fluid effectiveness monitoring system for an aircraft is disclosed. The ice detection portion is particularly suited for use in flight to notify the flight crew of an...
5436854 Microcomputer-controlled electronic device  
A microcomputer-controlled electronic device such as a video camera has a signal processor for processing an input signal supplied thereto. The signal processor is controlled by a system...
5420515 Active circuit trimming with AC and DC response trims relative to a known response  
An electronic probe circuit having ac and dc amplifiers and an input compensation subcircuit is enclosed within a trim housing that replicates the electrical effect of the probe housing. The...
5253511 Transmitter with multifunction adjustment  
A process variable transmitter which has a manual adjustment for span and zero or the like. The adjustment has a finer adjustment range where the output changes responsive to changes in the...
5195045 Automatic impedance matching apparatus and method  
An automatic impedance matching apparatus for matching an RF-signal generator to a load, such as a plasma etching chamber, is disclosed. The matching apparatus comprises a matching network having...
5184062 Dynamically calibrated trigger for oscilloscopes  
An oscilloscope provides adjustable control of the reference voltage level to the trigger comparator to calibrate the trigger for both gain and offset. An internal computer in the oscilloscope...
5180973 Self-calibrating CRT measuring instrument  
A measuring instrument having a programmable time base circuit including a digitally adjustable integrator for generating a plurality of sawtooth voltages for the different operational states of a...
5134576 Method and apparatus for the fine adjustment of a potentiometer  
The proper adjustment of a potentiometer is achieved through the use of a software routine that detects the output frequency from a thermistor circuit and compares the detected frequency with a...
5107438 Control apparatus for inverter  
A control apparatus for an inverter including a filter consisting of a reactor and a capacitor, connected to the output terminal thereof is operative to compute such a voltage correction value to...
5065351 Stabilization and calibration of precision electronic circuit component  
A technique for stabilization and calibration of precision analog circuit components such as amplifiers. A sample and hold circuit is placed in the feedback loop of the component. The input of the...
5012181 Apparatus for and method of internally calibrating an electrical calibrator  
A calibrator supplying electric parameters (viz voltage, current and resistances) over plural ranges to a meter to be calibrated comprises internal components for deriving each parameter over the...
4970656 Analog drive for ultrasonic probe with tunable phase angle  
The system uses a tunable inductor in series with the piezoelectric crystal excitation transducer in the probe which has a flux modulation coil. The bias current through this flux modulation coil...
4896282 Flow computer calibration technique  
A method of calibrating a process computer, of the kind including an analogue to digital converter for converting analogue input signals representative of measured process parameters into digital...
4837504 Electricity meter and method of calibrating same  
An solid-state electricity meter includes an electronic measuring unit with an analog/digital converter which receives signals from amplifiers for various measurement ranges, and a control section...
4819178 Automatic circuit adjusting system and circuit adjusting tool therefor  
An automatic circuit adjusting system comprises a circuit adjusting tool assembly. The circuit adjusting tool assembly is movable to adjust different orientations of circuit elements. The circuit...
4817011 Automated modeling method for tuning transformers  
A computer automated method and system is used to time transformers to produce a resonant circuit for matching elements to a circuit is disclosed. The modeling method uses a computer to select...
4807167 Rapid method of digital automatic gain control  
A method of digital automatic gain control does the required circulation without numerical multiplication or division and makes possible fast process control using a digital AGC. A signal channel...
4800513 Auto-calibrated sensor system  
A self-calibrating sensor system is disclosed wherein a processing circuit, normally including an amplifier, receives the output of at least one sensor to develop a processed sensor signal. To...
4760535 Control circuit for tuning a high-frequency input circuit  
A control circuit for tuning a high-frequency input circuit comprises, in addition to a first adjustable component 5 which is directly controlled by a control voltage, further adjustable...
4730264 Arrangement for detecting measuring data in motor vehicles  
An arrangement for detecting data in motor vehicles is disclosed especially in combination with the open or closed loop control of internal combustion engines. The arrangement includes at least...
4729110 Correction of offset and gain errors in RF receivers  
Sampled and digitized in-phase and quadrature phase signals are algebraically accumulated in offset accumulators, the contents of which are periodically employed to adjust the value of offset...
4718558 Process and apparatus for sorting samples of material  
An optical sorter for beans and grains, including a detector providing a signal pulse for each of the sampled objects, and a signal processor for receiving and amplifying the pulse. The signal...
4712179 Method and apparatus for calibrating internal measurements of an implanted cardiac pacer  
An implantable cardiac pacer having pacer circuitry for producing output stimulation pulses on leads connectable to a patient's heart includes internal measurement circuitry for producing...
4688194 Multi-range controller  
Upon selection of a range, an input signal is amplified by a factor suitable for the range, and effects of drift and offset of the amplification are eliminated by correction based on zero-volt and...
4663586 Device with automatic compensation of an ac attenuator  
An ac measuring instrument automatically compensates an input attenuator to achieve precision frequency response. The output of the input attenuator is applied to both the conventional measurement...
4616329 Self-calibrating adaptive ranging apparatus and method  
Apparatus and method for calibrating an adaptive ranging A/D converter wherein a noise having known statistical properties is deliberately superposed on the reference DC signals used to calibrate...
4592002 Method of digital temperature compensation and a digital data handling system utilizing the same  
A method of digital temperature compensation uses a digital temperature compensation word to produce a digital word modification of a digital input to a temperature sensitive digital to analog...
4553091 Automatic vertical calibration method and system for an oscilloscope  
An oscilloscope vertical calibration system is provided in which gain control elements in one or more vertical input channels are automatically controlled with respect to cursor voltages applied...
4542638 Automatic calibration of sensor circuits in gear shapers  
A computer controlled apparatus for periodically calibrating the electrical outputs of pressure transducers to compensate for circuit-induced errors and produce accurate outputs in real time....

Matches 301 - 350 out of 379 < 1 2 3 4 5 6 7 8 >