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176 results about "Measurement delay" patented technology
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Time Delay Measurement Theory of Operation: The time delay measurement is performed in the application Xilinx, using a simple counter to measure the time between the insertion of an errored bit in the transmit data stream, and the recognition of the errored bit in the receive data stream.
System and method for position determination by impulse radio
InactiveUS6133876ADirection finders using radio wavesSatellite radio beaconingTransceiverDirectional antenna
A system and a method for position determination by impulse radio using a first transceiver having a first clock providing a first reference signal and a second transceiver placed spaced from the first transceiver. The system determines the position of the second transceiver. The second transceiver has a second clock that provides a second reference signal. A first sequence of pulses are transmitted from the first transceiver. The first sequence of pulses are then received at the second transceiver and the second transceiver is then synchronized with the first sequence of pulses. A second sequence of pulses are transmitted from the second transceiver. The first transceiver receives the second sequence of pulses and the first transceiver is synchronized with the second sequence of pulses. A delayed first reference signal is generated in response to the synchronization with the second sequence of pulses. A time difference between the delayed first reference signal and the first reference signal is then measured. The time difference indicates a total time of flight of the first and second sequence of pulses. The distance between the first and the second transceiver is determined from the time difference. The direction of the second transceiver from the first transceiver is determined using a directional antenna. Finally, the position of the second transceiver is determined using the distance and the direction.
Owner:HUMATICS CORP
Sound measuring apparatus and method, and audio signal processing apparatus
InactiveUS7949140B2Increase sample sizeLong delay timeTwo-channel systemsSpecial data processing applicationsEngineeringLoudspeaker
A sound measuring apparatus for measuring a sound-arrival delay time from a speaker to a microphone on the basis of a result obtained by outputting a test signal from the speaker and picking up the test signal using the microphone includes the following elements. A control unit performs control so that the test signal is expanded in a time axis and is then output from the speaker. A delay time measuring unit measures an expansion-based measured delay time on the basis of a delay time that is measured on the basis of a time difference between the test signal expanded in the time axis and output from the speaker and a signal obtained from the microphone by picking up the output expanded test signal, and obtains the sound-arrival delay time as the expansion-based measured delay time.
Owner:SONY CORP
Sound measuring apparatus and method, and audio signal processing apparatus
InactiveUS20070086597A1Increase sample sizeLong delay timeTwo-channel systemsSpecial data processing applicationsDelayed timeEngineering
A sound measuring apparatus for measuring a sound-arrival delay time from a speaker to a microphone on the basis of a result obtained by outputting a test signal from the speaker and picking up the test signal using the microphone includes the following elements. A control unit performs control so that the test signal is expanded in a time axis and is then output from the speaker. A delay time measuring unit measures an expansion-based measured delay time on the basis of a delay time that is measured on the basis of a time difference between the test signal expanded in the time axis and output from the speaker and a signal obtained from the microphone by picking up the output expanded test signal, and obtains the sound-arrival delay time as the expansion-based measured delay time.
Owner:SONY CORP
System and method for position determination by impulse radio
InactiveUS6297773B1Direction finders using radio wavesSatellite radio beaconingTransceiverDirectional antenna
Owner:HUMATICS CORP
Delay measurements and calibration methods and apparatus for distributed wireless systems
InactiveUS7940667B1High delay measurement accuracyReduce significant maintenance costSynchronisation arrangementError preventionDiversity schemeComputer science
Delay measurement and delay calibration methods and apparatus are described for use within distributed wireless base stations employing a remote radio head topology. The methods and apparatus are usable in any system that requires accurate delay measurement and / or constant delay through an electronic device. The methods and apparatus for measuring delay embody a highly accurate distributed delay measurement architecture that handles multiple delay paths within distributed wireless base stations employing a remote radio head topology. The method and apparatus are amenable to implementation with current integrated circuit technology. The methods and apparatus for calibrating electronic delay within distributed base stations employing a remote radio head topology are useful for implementing distributed wireless base stations where transmit diversity is desired. Using the methods disclosed herein, delay within a distributed wireless base station can be measured and calibrated to achieve very deterministic delay characteristics at the system level.
Owner:MICROSEMI SOLUTIONS (US) INC
Liveness protocol
InactiveUS20050021737A1Data switching by path configurationMultiple digital computer combinationsLivenessDelayed time
A network includes a connected device and a connected client. The device includes a receiver to receive ping messages, a counter to count the ping messages received, and a transmitter to transmit a reply message that includes a ping load value that is responsive to the count value. The client includes a timer to measure a delay time, a transmitter to transmit a ping message to the device after the delay time has elapsed since transmitting a previous ping message to the device, a receiver to receive the reply message, and a controller to adjust the delay time responsive to the device ping load.
Owner:INTEL CORP +1
Maintaining Optimum Voltage Supply To Match Performance Of An Integrated Circuit
Power supply voltage to an integrated circuit (IC) or a portion of an IC is maintained at an optimum level matching the IC performance. Voltage ranges and delay measures for corresponding operating frequencies are stored in tables in a voltage control block. When a new frequency of operation is desired, the voltage control block measures delay performance of the IC, and sets the supply voltage to a value specified in a corresponding entry in a table. The voltage control block then continues to measure delay performance, and dynamically adjusts the power supply voltage to an optimum value thereby minimizing power consumption.
Owner:NVIDIA CORP
Method measuring a delay time metric and measurement system
InactiveUS20060274791A1Possible to obtainAccurately reflectTime-division multiplexData switching networksDelayed timeNetwork Communication Protocols
In a method of measuring a delay time metric in relation to a round-trip path in a communications network, a protocol data unit is generated in accordance with a data structure definition of a communications protocol supporting an extendible schema, the protocol data unit comprising an opaque object conforming to the extendible schema. The protocol data unit is provided with a routing address corresponding to a source node to cause the protocol data unit, when sent, to follow the round-trip path from the source node back to the source node via a destination node. The protocol data unit is sent from the source node to the destination node, received at the destination node, and forwarded from the destination node to the routing address. Measurement data is recorded in the opaque object in respect of at least one network node on the round-trip path, and at least part of the measurement data contained in the opaque object is used to calculate the delay time metric.
Owner:AGILENT TECH INC
Methods and apparatus for delay circuit
An electronic system includes a deskewing circuit configured to measure a delay and generate a synchronized signal according to the measured delay. The deskewing circuit may be configured to detect an overflow condition and respond accordingly, for example by asserting an overflow signal. Further, the deskewing circuit may be additionally or alternatively configured to detect successful measurement of the delay and respond, for example by executing a power saving and / or noise reducing procedure.
Owner:ROUND ROCK RES LLC
Measurement method for reading multi-level memory cell utilizing measurement time delay as the characteristic parameter for level definition
A method for operating a memory cell in which a variation of the characteristic parameter of the memory cell affects the effective resistance of the memory cell. The method includes measuring a first discharge time of a reference voltage through the memory cell, determining that the first discharge time is less than a minimum discharge time, adding a supplemental capacitor in parallel with the memory cell, adding including coupling the capacitor to the memory cell through a switch, measuring a second discharge time of the reference voltage through the memory cell, storing the second discharge time and determining the value stored in the memory cell based on the second discharge time. Measuring the first and second discharge times includes pre-charging an electronic circuit coupled to the memory cell, activating the memory cell so as to discharge the electronic circuit, at least partially through the memory cell, starting a time measurement when the memory cell is activated, and stopping the time measurement when the voltage level in the electronic circuit falls below a pre-defined reference voltage.
Owner:IBM CORP
Delay-locked loop with built-in self-test of phase margin
ActiveUS7042971B1Pulse automatic controlAngle demodulation by phase difference detectionDelay-locked loopEngineering
A method and apparatus for measuring phase margin of a delay-locked loop (DLL) is provided in which a reference clock is applied to a reference input of the DLL. An auxiliary variable delay is coupled within the DLL and is varied until the DLL becomes unstable. A phase margin output is generated as a function of a value of the variable delay at which the DLL becomes unstable.
Owner:AVAGO TECH INT SALES PTE LTD
Method for quickly measuring radon exhalation rate in closed-loop manner
InactiveCN103487360AAccurate radon exhalation rateQuick measurementIndividual particle analysisClosed loopComputation process
A method for quickly measuring the radon exhalation rate in a closed-loop manner comprises a measurement process and a computation process. During the measurement process, a long time interval is adopted, that is, measurement is conducted once for every 5-120 min, and once measurement is a period. Through the adoption of measured data in two periods, an accurate radon exhalation rate can be obtained quickly through a simple computational method; during the measurement process, the two measurement periods are equal. A radon meter adopting the frequently-used electrostatic collection method actually measures the concentration of <218>Po and is obvious in measurement delay. When the radon meter adopting the frequently-used electrostatic collection method measures a variable radon concentration in a tracking manner, a measured value has to be corrected; through the correction on the measured value, an accurate radon exhalation rate can be obtained quickly.
Owner:HENGYANG NORMAL UNIV
Method, device and system for selecting target cell
The invention discloses a method, device and system for selecting target cell. The method disclosed by the invention includes: frequency points required to measured by user equipment are determined, wherein the frequency points required to be measured include frequency points except overload ones contained in adjacent cells of the cell where the user equipment is located, and / or frequency points contained in the adjacent cells where the user equipment is about to leave, and / or frequency points not supported by the user equipment; the user equipment is notified to measure the frequency points required to be measured; measurement result of the frequency points required to be measured returned by the user equipment is received; and a target cell is selected according to the measurement result of the frequency points required to be measured. By applying the invention, measurement delay is reduced.
Owner:HUAWEI TECH CO LTD
Receiving apparatus and gain control method
InactiveUS7039095B2Improve reception qualityImprove accuracyPower managementGain controlInterference cancellerGain coefficient
A code generation section 106 outputs a primary code stored in a code storage section 105 at a predetermined timing. A despreading section 107 measures a delay profile by correlation between the output signals of an analog-to-digital conversion section 104 and the primary codes of the above code generation section 106. A user judgment section 111 detects a maximum path for each user, based on the above delay profiles. An electric-field-strength calculation section 112 calculates the sum of amplitude values Rcell of the own cell from an electric power Pi of the maximum path PAi for each user i. A gain-coefficient calculation section 113 calculates a gain coefficient so that the above Rcell becomes equal to a target value. Thereby, AGC may be performed with good accuracy, and deterioration in the received quality may be prevented, when an MUD type interference canceller is used.
Owner:PANASONIC CORP
Reduced state estimation with multisensor fusion and out-of-sequence measurements
This invention relates to state estimation after processing measurements with time delays from multiple sensors of systems characterized by state variables and by multidimensional parameters, for which the latter are unknown and may vary arbitrarily in time within known physical bounds. If a measurement is time-late, apply the measurement to an out-of-sequence filter that uses a mean square optimization criterion that accounts for measurement errors and said bounding values, as well as the delay time, to optimally produce estimates of the true states of the system. If the measurement is not time-late, apply the measurements to an in-sequence filter that uses a mean square optimization criterion that accounts for measurement errors and said bounding values, to produce estimates of the true states of the system. The estimates are applied to one of (a) making a decision relating to the system, (b) operating a control system, and (c) controlling a process.
Owner:LOCKHEED MARTIN CORP
Measure-controlled delay circuit with reduced playback error
InactiveUS20040044918A1Generating/distributing signalsTransmission path multiple useControl delayControl circuit
A timing control circuit for synchronizing an output clock signal with an input clock signal includes a pulse generator, a measure delay array, a measure circuit, and a forward delay array. The pulse generator is configured to receive a delay clock signal generated based on the input clock signal and generate a pulse, the pulse having a falling edge corresponding to a rising edge of the delay clock signal. The measure delay array is coupled to the pulse generator to receive the pulse. The measure circuit is configured to determine a position of the pulse within the measure delay array corresponding to a rising edge of the input clock signal. The forward delay array is configured to receive the input clock signal and delay the input clock signal based on the position determined by the measure circuit to generate the output clock signal. A method for synchronizing an output clock signal with an input clock signal includes receiving a delay clock signal generated based on the input clock signal. A pulse is generated having a falling edge corresponding to a rising edge of the delay clock signal. The pulse is propagated through a measure delay array. A position of the pulse within the measure delay array corresponding to a rising edge of the input clock signal is determined. The input clock signal is delayed based on the position determined by the measure circuit to generate the output clock signal.
Owner:ROUND ROCK RES LLC
Inter-channel bias calibration for navigation satellite systems
Owner:JAVAD GNSS
Method for observing longitudinal motion state of aircraft by using time varying measurement delay output signal
InactiveCN102591212AAchieve observationAchieve estimatesSimulator controlAttitude controlFly controlEngineering
The invention discloses a method for observing the longitudinal motion state of an aircraft by using for a time varying measurement delay output signal aircraft. The longitudinal motion state observation method comprises four steps, i.e. firstly, acquiring a kinetic model of the aircraft in a pitching plane; secondly, designing an observer; thirdly, adjusting an observation parameter and checkingthe observation effect; and fourthly, finishing the design. According to the longitudinal motion state observation method, the current time state of the system is reconfigured according to a model ofcontaining certain time varying delayed output and system, and thus the observation of the system state is realized. The observation of a longitudinal motion kinetic model of the aircraft can be realized and the observation of other control objects can also be realized. Therefore, the longitudinal motion state observation method has better practical value and favorable application prospect in thetechnical field of flying control.
Owner:BEIHANG UNIV
Ring network distributed bus protection synchronization method
ActiveCN103715766ASimple implementation of sampling synchronizationHigh synchronization accuracyEmergency protective circuit arrangementsSynchronising arrangementData synchronizationRing network
The invention discloses a ring network distributed bus protection synchronization method. The ring network distributed bus protection synchronization method includes the steps of sampling synchronization, constant value pressing plate synchronization and time synchronization. According to the sampling synchronization, fixed delay and measurement delay are adopted; the delay correction domain of sampling messages is corrected real time; and after obtaining sampling messages of all interval units, a ring network bus protection unit performs software interpolation synchronization through analyzing sampling delay in the delay correction domain. According to the constant value pressing plate synchronization, a source-end synchronous method is adopted; and a constant value pressing plate can be synchronized at any intervals of ring network bus protection. According to the time synchronization, a time synchronization method based on minimum addresses is adopted; and each interval of the ring network bus protection can still have very high timing precision under the situation in which an external time source is lost at an extreme end. The ring network distributed bus protection synchronization method of the invention is advantageous in easiness in implementation, no need for external synchronization sources and high synchronization precision.
Owner:NANJING GUODIAN NANZI POWER GRID AUTOMATION CO LTD
End-system dynamic rate limiting of background traffic
Owner:BITTORRENT
Inter-channel bias calibration for navigation satellite systems
Dynamic inter-channel bias calibration of a navigational receiver is provided. A reference signal is propagated through front-end circuitry of the receiver. A delay caused by the propagation of the reference signal through the front-end circuitry is measured. The inter-channel bias of the navigational receiver is reduced using the measured delay associated with the front-end circuitry of the receiver.
Owner:JAVAD GNSS
Surveying device and surveying method
InactiveCN101273282AReduce measurement errorOptical rangefindersActive open surveying meansObservational errorMeasurement device
A surveying device and method for measuring the delay time or distance with a smaller measurement error by directing a light beam to an object to be measured and receiving the reflected light beam. A reference pulse light (r) and a measurement pulse light (o1) are received as light reception signals by a light-receiving section (9). A damping signal (S3U) is generated from the light reception signals (r, o1). The gain of the signal of minute level near the zero-cross point (Q0) of the damping signal (S3U) is made high to amplify the signal with the high gain. Timing signals (r', O1') are generated using the amplified signal. With this, the measurement error can be minute.
Owner:KK TOPCON
Synchronization of distributed cable modem network components
ActiveUS20060056460A1Digital computer detailsTime-division multiplexQuality of serviceNetwork packet
A distributed CMTS includes a head end, a downstream transmitter hub, and an upstream receiver hub. The head end transmits data packets to the downstream transmitter via a coupling packet data network. Each data packet is marked with a “measured delay” Quality of Service (QOS) and includes a time stamp that is based upon a clock of the head end and a delay tag. The downstream transmitter hub receives the plurality of data, adjusts the time stamps based upon the delay tags, smoothes the time stamps of the plurality of data packets and, based upon the smoothed time stamps, synchronizes its clock with the clock of the head end. The downstream transmitter hub then synchronizes a clock of the upstream receiver hub with the clock of the downstream transmitter hub. The upstream receiver hub may synchronize its clock to the clock of the head end using this technique.
Owner:AVAGO TECH INT SALES PTE LTD
Sliding mode control method for servo motor with measurement delay output
InactiveCN102594251AAvoid signal delayAccurate trackingElectronic commutation motor controlVector control systemsAutomatic controlClosed loop
The invention discloses a sliding mode control method for a servo motor with measurement delay output. The method comprises the following five steps of: 1, analyzing and establishing a servo motor system model; 2, designing a delay observer for a servo motor system; 3, designing sliding mode control over the servo motor; 4, checking tracking performance, and regulating parameters; and 5, finishing the design. A delay-observer-based sliding mode control method is provided for the servo motor system, and is used for controlling the rotating angle of the servo motor. By the control method, the stability of a closed loop system is ensured, a speed sensor is not required, the problem of signal delay of an angular position sensor is solved, and application in engineering practice is facilitated. The method has high practical value and broad application prospect in the technical field of automatic control.
Owner:GUODIAN NANJING ELECTRIC POWER TEST RES CO LTD
System and method for reduced power open-loop synthesis of output clock signals having a selected phase relative to an input clock signal
InactiveUS7078951B2Reduce degradationReduce power consumptionDigital storagePhase shifterEngineeringMeasurement delay
A signal generating circuit includes a pulse generator generating a pulse responsive to a periodic clock reference signal. The pulse propagates through a plurality of series-connected delay elements in a measurement delay line. The measurement delay line is coupled to a series of latches that correspond to respective groups of delay elements in the measurement delay line. The delay element to which the pulse has propagated when the next pulse is received causes a corresponding latch to be set. The clock reference signal propagates through a signal generating delay line, which contains a sub-multiple of the number of delay elements in the measurement delay line, starting at a location corresponding to the set latch. The latch may remain set for a large number of periods of the clock reference signal so that it is not necessary for the clock reference signal to propagate through the measurement delay line each cycle.
Owner:MICRON TECH INC
Dynamic distribution and corrected multi-source information fusion method based on factor graph
ActiveCN109883426AIncrease usageImprove navigation accuracyNavigational calculation instrumentsNavigation by speed/acceleration measurementsRobustificationFault tolerance
The invention belongs to the technical field of multi-sensor fused navigation and the technical field of time registration, and in particular relates to a dynamic distribution and corrected multi-source information fusion method based on a factor graph. The invention aims at the problems that a modern navigation system is increasingly complex in application environment, discontinuous in working time of sensor and sporadic in measured value, and even has output delays; and a traditional fast federated filtering algorithm is complex in computation and reduced in accuracy when being applied to processing a measurement delay problem. According to the method provided by the invention, a factor graph probability model is used for re-building a navigation system, the computation amount is reducedwhile the navigation accuracy is ensured when a measurement type is dynamically changed, the plug and play property of the system is improved, aiming at the measurement delay problem, the retardationof the multiple pieces of sensor information is compensated, and the measurement information usage rate and navigation accuracy are improved. A simulation result indicates that when the provided algorithm is used for measuring the value, the better robustness and fault tolerance are achieved under the condition of intermittence and output delay, and meanwhile the accuracy is also improved.
Owner:HARBIN ENG UNIV
System and method for reduced power open-loop synthesis of output clock signals having a selected phase relative to an input clock signal
InactiveUS20060044037A1Reduce delay of delay lineReduce power consumptionDigital storagePhase shifterEngineeringMeasurement delay
A signal generating circuit includes a pulse generator generating a pulse responsive to a periodic clock reference signal. The pulse propagates through a plurality of series-connected delay elements in a measurement delay line. The measurement delay line is coupled to a series of latches that correspond to respective groups of delay elements in the measurement delay line. The delay element to which the pulse has propagated when the next pulse is received causes a corresponding latch to be set. The clock reference signal propagates through a signal generating delay line, which contains a sub-multiple of the number of delay elements in the measurement delay line, starting at a location corresponding to the set latch. The latch may remain set for a large number of periods of the clock reference signal so that it is not necessary for the clock reference signal to propagate through the measurement delay line each cycle.
Owner:MICRON TECH INC
Circuitry and method for measuring negative bias temperature instability (NBTI) and hot carrier injection (HCI) aging effects using edge sensitive sampling
InactiveUS9564884B1Electrical testingSingle output arrangementsTransition densityCritical path method
Toggling functional critical path timing sensors measure delays in toggling functional critical paths that continuously receive patterns from an aging pattern generator. Wear is accelerated. A margin delay adjustment controller sweeps margin delays until failures occur to measure delays. The margin delay is then adjusted in functional critical path timing sensors that add the margin delay to functional critical paths that carry user data or chip controls during normal operation. When the path delays fail to meet requirements, the functional critical path timing sensors signal a controller to increase VDD. When no failures occur over a period of time, the controller decreases VDD. Wear on the toggling functional critical paths is accelerated using both toggle and low-transition-density patterns. Circuit aging is compensated for by increasing margin delays to timing sensors.
Owner:QUALCOMM INC
Method and apparatus for locating tires using RFID
A method and apparatus for determining the position of four tires on corresponding four wheels in a vehicle. Each wheel has an axis of rotation. Each tire has an embedded Radio Frequency IDentification (RFID) tag. The RFID tags embedded in the four tires have respective identifiers denoted as ID1, ID2, ID3, and ID4. A position to place a reader antenna is determined and the reader antenna is subsequently placed in the determined position. The reader antenna in the determined position emitting N signals to the respective RFID tag in the four tires. A delay is measured for receiving each signal reflected from the RFID tags. Which wheel of the four wheels each tire is on is identified according to the measured delays.
Owner:KYNDRYL INC
Measurement one way delay method and equipment thereof, and communication system
ActiveCN102227110AAvoid occupyingReduce the burden onData switching networksCommunications systemOne-way delay
The embodiment of the invention provides a measurement delay method and equipment thereof, and a communication system. The method comprises the following steps that: second equipment receives at least two messages, which are sent by first equipment in a preset interval of time; a reference message is determined between the received at least two messages, wherein the one way delay of the reference message is a delay radix; relative delay of at least one non-reference message is calculated, wherein the non-reference message is the other message except the reference message between the at least two messages; and one way delay of the at least non-reference message is obtained according to the delay radix and the relative delay of the at least non-reference message.
Owner:HUAWEI TECH CO LTD
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