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162 results about "Timing results" patented technology
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Design-specific on chip variation de-rating factors for static timing analysis of integrated circuits
InactiveUS8336010B1Reduce running timeDesign specificationComputer aided designSoftware simulation/interpretation/emulationTime informationDying processes
In one embodiment of the invention, a method of analysis of a circuit design with respect to within-die process variation is disclosed to generate a design-specific on chip variation (DS-OCV) de-rating factor. The method includes executing a static timing analysis (STA) in an on-chip variation mode using a process corner library. Collecting timing information of the top N critical timing paths. Executing a statistical static timing analysis (SSTA) on the N critical timing paths using timing models characterized for SSTA with sensitivities of delays to process variables. Compare the two timing results and deriving DS-OCV de-rating factors for the clock / data paths to be used in a STA OCV timing analysis to correctly account for the effects of process variations. A user may select to specify DS-OCV de-rating factors for paths or groups of paths and achieve an accurate timing analysis report in a reduced amount of run-time.
Owner:CADENCE DESIGN SYST INC
Resistance value measuring method and device or capacitance value measuring method and device
ActiveCN101788609AReduce cost of measurementMeet the costResistance/reactance/impedenceCapacitanceElectrical resistance and conductance
The embodiment of the invention provides resistance value or capacitance value measuring method and device. The resistance value measuring device comprises an integrated circuit (IC) and a charging and discharging circuit, wherein the IC comprises a timer and an I / O (input / output) port with a break detection function, and the IC is used for acquiring the timing result of the timer and generating the resistance value of a resistor to be measured according to the timing result; the charging and discharging circuit is formed by connecting the resistor to be measured and a capacitor in series, one end of the charging and discharging circuit is coupled with the I / O port of the IC, and the other end of the charging and discharging circuit is grounded; the IC charges the capacitor through the I / O port and the resistor to be measured, and when the capacitor is in a charging saturation state, the IC controls the timer to begin timing, triggers the capacitor for executing the discharging process and starts the break detection function of the I / O port; and when the I / O port detects that the voltage value of the capacitor reaches the threshold value of break of trigger voltage in the discharging process of the capacitor, the I / O port is used for sending a break signal to the IC to trigger the IC for controlling the timer to stop timing. The device realizes the measurement of the resistance value with lowest hardware cost.
Owner:HUAWEI DEVICE CO LTD
PPP-RTK positioning method based on low-orbit constellation navigation augmentation system
ActiveCN108415050AImplement real-time initializationReal-time positioningSatellite radio beaconingObservation dataOrbit
Owner:BEIJING FUTURE NAVIGATION TECH CO LTD
Frequency offset estimation and timing method and device
InactiveCN102347924AEliminate the effects ofAvoid the problem of excessive processing volumeMulti-frequency code systemsTransmitter/receiver shaping networksComputer scienceFrequency offset
The invention discloses a frequency offset estimation and timing method and a frequency offset estimation and timing device. The method comprises the following steps of: performing rough timing on a received signal according to a rough timing scheme to obtain a rough timing result; performing decimal frequency offset estimation based on a repetitive structure of the received signal according to the rough timing result to obtain a decimal frequency offset estimation result; determining a searching window according to an error range of the rough timing result and the positions of ghost peaks produced by integral frequency offsets; and in the searching window, performing integral frequency offset detection on the received signal by utilizing the decimal frequency offset estimation result and at least one integral frequency offset, and obtaining an integral frequency offset estimation result and a precise timing result according to an integral frequency offset detection result. By the method and the device, the influence of the ghost peaks and noises on the frequency offset estimation results can be eliminated, the problem of over-high processing load caused by an irrational searching range in related technologies can be solved, and the frequency offset estimation and timing precision can be effectively improved; and the method and the device can be effectively adapted to scenes with high noises and frequency offsets.
Owner:大连海兰德维通信技术有限公司
Method and system for distributing smart containers
A smart container is disclosed. The smart container includes a container body having at least one storage division, a timekeeping unit configured to keep time of a deposit-removal cycle for a storage division to obtain a timekeeping result, a billing unit configured to receive the timekeeping result from the timekeeping unit of the deposit-removal cycle for the specific storage division and calculate a storage fee based on the timekeeping result, and a displaying unit being for displaying the storage fee calculated by the billing unit.
Owner:ALIBABA GRP HLDG LTD
Pseudolite time synchronization method and positioning method thereof
InactiveCN104062895ATime Synchronization and Time TraceabilityLow costRadio-controlled time-piecesSatellite radio beaconingSignal processingComputer engineering
The invention discloses a pseudolite time synchronization method and a positioning method thereof. The reference station is provided with a high-accuracy clock, such as a rubidium atomic clock, and a synchronization signal is transmitted by the reference station; the signal transmitted by the reference station is received by pseudolite stations synchronously, signal processing and timing calculation are performed to obtain a high-accuracy timing result, and the local locks of the pseudolite stations are corrected; and a distance measuring signal is transmitted by each pseudolite station under the control of the local lock. In the pseudolite user positioning process, the pseudolite user receives the signals transmitted by the pseudolite stations, and signal processing is performed to obtain a positioning result of the user. According to the invention, advantages of simple implementation and low hardware cost can be realized.
Owner:GUILIN UNIV OF ELECTRONIC TECH
Traffic flow parameter real-time detection method based on traffic monitoring video
PendingCN110033479AAssist real-time adjustmentImprove robustnessImage enhancementImage analysisCorrelation filterVehicle driving
The invention discloses a traffic flow parameter real-time detection method based on a traffic monitoring video. The method comprises the steps of video pre-calibration: calibrating the type and position of a vehicle; target detection: using pre-calibrated data to train a deep learning model of vehicle target detection based on the SSD; coordinate mapping: solving a mapping relation between a monitoring video image coordinate system and a world coordinate system; vehicle target tracking: tracking vehicle driving in real time by adopting a nucleation correlation filter tracking algorithm in combination with a deep learning model of vehicle target detection; index acquisition and calculation: setting a calibration area timer, acquiring a time index, combining a vehicle target detection result, a tracking result of a vehicle tracking algorithm and a timing result of the timer, and obtaining a real-time detection result of the traffic flow parameters through coordinate mapping conversion.According to the method, the problem of directly obtaining the traffic flow parameters from the traffic monitoring video is solved, and real-time accurate detection of multiple traffic flow parameterscan be completed at a time.
Owner:SICHUAN JIUZHOU VIDEO TECH
Ultrasonic distance measurement system and method for controlling ultrasonic distance measurement system to measure distance
ActiveCN103869321AFlexible operationReduce volumeProgramme controlComputer controlElectricityAnalog signal
The invention discloses an ultrasonic distance measurement system and a method for controlling the ultrasonic distance measurement system to measure the distance. The ultrasonic distance measurement system comprises an ultrasonic sensor and a mobile terminal, wherein the ultrasonic sensor is used for transmitting an ultrasonic signal to a measurement target and receiving an analog signal reflected by the target; the mobile terminal is used for receiving the analog signal received by the ultrasonic sensor through an audio port of the mobile terminal and carrying out timing operations, the distance is calculated on the basis of the obtained analog signal and a timing result, the obtained distance is stored and displayed, and the ultrasonic sensor is controlled to be started. The mobile terminal is adopted to serve as a processor, a cycle sine wave signal is output to a power obtaining circuit through a second channel of the audio port to serve as a power supply of the ultrasonic sensor, an intermittent power supply strategy is adopted, and electricity is saved; a cycle sine wave signal is transmitted to a transmitter of the ultrasonic sensor through a first channel of the audio port to provide a square signal with proper power for the ultrasonic sensor, and an echo signal of the ultrasonic sensor is received through a fourth channel of the audio port.
Owner:NAT SPACE SCI CENT CAS
Road section pedestrian traffic signal control system based on pedestrian crossing clearance time
InactiveCN103295404AAccurate calculationAlleviate serious traffic violationsControlling traffic signalsTraffic capacityControl system
The invention discloses a road section pedestrian traffic signal control system based on pedestrian crossing clearance time. The road section pedestrian traffic signal control system based on the pedestrian crossing clearance time comprises a pedestrian data acquisition and recording unit, a pedestrian crossing clearance time computing unit and a signal implementation and feedback unit, and is applicable to pedestrian signal timing designs of thick crowd crossing districts and intersections with exclusive pedestrian phases. The road section pedestrian traffic signal control system based on the pedestrian crossing clearance time comprehensively takes time loss and pedestrian crossing traffic capacity decline due to mutual disturbance of stream of people of opposite directions during thick crowd crossing into consideration, overcomes the defects that the pedestrian speed is used as a constant and the pedestrian crossing capacity is unchanged in a traditional pedestrian traffic signal control, so that the timing result is more accurate and practical. Only the pedestrian flow and the pedestrian speed of the pedestrian crossing are needed to be measured and computed, so that the computation is concise.
Owner:SOUTHEAST UNIV
Self-service electronic timing system and method for running
InactiveCN104183030AAccurate test scoresTest scores are validRegistering/indicating time of eventsElectronic systemsTiming system
The invention relates to the field of timing of athletic contests and particularly relates to a self-service electronic timing system and method for running. The self-service electronic timing system comprises a self-service registration host, a starting point timing host, a terminal point timing host and a data server, wherein the self-service registration host is used by athletes to sign in and is used for assigning RFID cards to the athletes; the starting point timing host is used for automatically timing when the athletes run through a starting line and sending registration items of the athletes to the terminal point timing host; the terminal point timing host is used for inquiring the registration items of the athletes, judging whether the athletes finish the registration items or the rest of turns of the registration items, stopping timing after confirming that the athletes fish the registration items and uploading timing results to the data server; the data server is used for storing basic information of the athletes and receiving and storing the timing results of the corresponding registration items of the athletes. According to the self-service electronic timing system and method for running, a complete self-testing manner is utilized without referees, ordering and timing, so that the problems that the number of testers is large while the number of referees is small, and the schedule is tight are solved; meanwhile, test scores are accurate, effective and fair, and human factors are reduced.
Owner:北京赛康精益信息技术有限责任公司
Hybrid linear wire model approach to tuning transistor widths of circuits with RC interconnect
ActiveUS7325210B2Increase widthAccount for effectCAD circuit designSoftware simulation/interpretation/emulationElectrical resistance and conductanceHybrid approach
A hybrid linear wire model for tuning the transistor widths of circuits linked by RC interconnects is described. The method uses two embedded simulators during the tuning process on netlists that contain resistors (Rs). A Timing oriented simulator is used only for timing purposes on the original netlist that includes all the Rs. A Gradient oriented simulator is then run only on the modified netlist with all Rs shorted and within the iterative loop of the tuner to compute gradients. The present hybrid method achieves a significant improvement in computational speed. The Timing oriented simulator is fast and accurate for only timing netlists with Rs, but cannot compute gradients efficiently. The Gradient oriented simulator computes gradients efficiently but cannot do so in the presence of Rs. To prevent “de-tuning” that typically occurs when all Rs are shorted, ‘wire-adjusts’ are provided that make the initial timing results using the Gradient oriented simulator on the shorted netlist match the timing results using Timing oriented simulator on the original netlist. This permits the optimizer sense initially the correct set of critical timing paths, and more significantly, it permits the wire-adjusts keep track of the changing transistor widths to guide the optimizer during the iterations until convergence is achieved.
Owner:GLOBALFOUNDRIES U S INC
Determining Horizontal Scaling Pattern for a Workload
InactiveUS20150169339A1Hardware monitoringSoftware simulation/interpretation/emulationWorkloadCloud computing
An approach is provided to determine a horizontal scaling pattern for a workload. A production environment virtual machine (VM) is established in a cloud computing environment using a set of production operating characteristics. Mirrored environment VMs are also established in the cloud computing environment, with each of the mirrored environment VMs have adjusted operating characteristics as compared to the production environment VM. Requests are processed by the production and mirrored environment VMs with the processing time used being measured. The timing results corresponding to the production environment VM and to each of the mirrored environment VMs are compared and the set of production operating characteristics are adjusted based on comparison.
Owner:IBM CORP
Method for reporting and matching call log and device thereof
ActiveCN101925084AImprove retrieval efficiencySolve the problem of matching alignmentSpecial data processing applicationsWireless communicationElectricityProper time
The invention discloses a method for reporting a call log, which comprises the following steps of: UE generates a call log document when starting a wireless resource control connection request, wherein the call log document records the real-time call behavior of the UE, and one record of the call log document is completed after ending the calling; and a log timer counts the time that the user terminal does not report the call log document, resets and starts when the user terminal initializes, switches off or completes one report of the call log document, and triggers the UE to report the call log document and the current timing result of the log timer when the log timer is overtime or reports the proper time of the call log document to the user terminal. The invention further discloses a method for matching the call log, a device for reporting the call log and a device for matching the call log. The scheme of the invention is simple and practical.
Owner:ZTE CORP
Corner specific normalization of static timing analysis
InactiveUS20140149956A1Correct orderGreat effortComputer aided designSoftware simulation/interpretation/emulationStatic timing analysisAngular point
A method and a system for expressing results of a timing analysis of an integrated circuit (IC) chip design as relative values to drive efficient chip design closure include: using a computer, performing the timing analysis to compute timing results of the chip design across at least two design corners; applying corner specific normalization equations to the timing analysis results from each of the at least two corners to obtain normalized timing results; and using the timing results ordered and filtered by the normalized timing results of the IC chip design for the design closure prior to chip manufacture. The slacks are normalized to provide insight into the degree of difficulty of the required fixes for that slack across corners. Given multiple analyses, the slacks are fixed in a correct order across corners and paths, avoiding inefficient circuit solutions or cost greater design effort.
Owner:GLOBALFOUNDRIES INC
Lamp group based mixed traffic flow signal timing optimization method
ActiveCN104408944AThe solution cycle is smallReduce delaysControlling traffic signalsTraffic capacityTraffic efficiency
The invention provides a lamp group based mixed traffic flow signal timing optimization method, which comprises the steps of numbering each lamp group; setting a target function to be solved, wherein the target function takes the shortest period as a solving target, or takes the shortest period as a solution or takes the maximum traffic capacity as a solution; setting constraint conditions of the target function; writing a non-linear optimization solving program according to the target function and the constraint conditions; and finally acquiring an optimization timing result. The method provided by the invention has the advantages and beneficial effects that a signal timing scheme can be flexibly adjusted in allusion to flow requirements of different lamp groups, a concept of phase position is not used, turn-on of the lamp groups is not affected by other traffic flows at the same phase position any more, and the green lamp turn-on time of different traffic flows can be connected flexibly so as to achieve maximization of the traffic efficiency of a road crossing; and the traffic safety of non-motorized vehicles and pedestrians can be effectively ensured, and solving is conducted simply and conveniently.
Owner:TIANJIN MUNICIPAL ENG DESIGN & RES INST
Hybrid linear wire model approach to tuning transistor widths of circuits with RC interconnect
ActiveUS20060206845A1Increase widthAccount for effectCAD circuit designSoftware simulation/interpretation/emulationHybrid approachEngineering
A hybrid linear wire model for tuning the transistor widths of circuits linked by RC interconnects is described. The method uses two embedded simulators during the tuning process on netlists that contain resistors (Rs). A Timing oriented simulator is used only for timing purposes on the original netlist that includes all the Rs. A Gradient oriented simulator is then run only on the modified netlist with all Rs shorted and within the iterative loop of the tuner to compute gradients. The present hybrid method achieves a significant improvement in computational speed. The Timing oriented simulator is fast and accurate for only timing netlists with Rs, but cannot compute gradients efficiently. The Gradient oriented simulator computes gradients efficiently but cannot do so in the presence of Rs. To prevent “de-tuning” that typically occurs when all Rs are shorted, ‘wire-adjusts’ are provided that make the initial timing results using the Gradient oriented simulator on the shorted netlist match the timing results using Timing oriented simulator on the original netlist. This permits the optimizer sense initially the correct set of critical timing paths, and more significantly, it permits the wire-adjusts keep track of the changing transistor widths to guide the optimizer during the iterations until convergence is achieved.
Owner:GLOBALFOUNDRIES US INC
Method for detecting clothes weight in washing machine
The invention relates to a clothes amount detecting method for a washing machine, which can detect the clothes amount accurately in the washing machine of directly reversed motor driving mode. The method includes the following steps: accelerating the mixer when a washing instruction is inputted; timing when the rotation speed reaches the setting speed; comparing the timing result with the clothes amount table which is set by time to detect the clothes amount. The invention can execute the most proper clothes amount detection according to the washing machine characteristics.
Owner:LG ELECTRONICS (TIANJIN) APPLIANCES CO LTD
Self-positioning method and system for intelligent mowing machine
InactiveCN105759813ARealize self-positioningOvercoming the flaw of random mowingPosition/course control in two dimensionsBroadbandEngineering
The invention discloses a self-positioning method and system for an intelligent mowing machine. After an UWB positioning module wakes up different UWB labels, positioning signals are sent to the UWB labels and timing is started. The UWB labels send positioning feedback signals to the UWB positioning module. After the UWB positioning module receives the positioning feedback signals, timing is stopped. According to the timing result, the distances between the UWB positioning module and the UWB labels are calculated and the intelligent mowing machine is positioned. Through the UWB positioning module arranged on the intelligent mowing machine and the UWB labels arranged at a plurality of predetermined positions, automatic positioning of the intelligent mowing machine is realized and path planning is further made. A shortcoming that an intelligent mowing machine can only work in a limited area randomly in the prior art is overcome and repeated mowing of the prior intelligent mowing machine is avoided. Resources are saved and working efficiency is improved. Besides, no electric fence needs to be put around a glass land, so that cost is saved further.
Owner:POSITEC TECH CHINA CO LTD
Debugging Device
InactiveUS20110107310A1Reliable resultsAccurate measurementSoftware testing/debuggingSpecific program execution arrangementsEmbedded systemTiming results
A debugging tool for a time-triggered system comprises means for interrogating the system code to determine task details; means for modifying the system code to include breakpoints, the position of the breakpoints being determined by the task details; means for executing the modified system code; means for measuring the time between pre-determined ones of said breakpoints; and means for reporting the timing results to a user.
Owner:UNIVERSITY OF LEICESTER
Body movement measuring device
The present invention provides a body movement measuring device which can intuitively master the movement amount of a user and can easily set a target value of movement speed to an anticipated value. The body movement measuring device is provided with an acceleration sensor (1), an operation processing part (2), an input operation part (4) and a display part (5). A target speed setting function (25) of the operation processing part (2) set a speed which is obtained through multiplexing an average movement speed in common movement with a magnification input by a user through an input operationpart (4). A walking speed operation function (23) of the operation processing part (2) calculates the movement speed through performing integration to the detected value of the acceleration which is inputted from the acceleration sensor (1). A timing function (26) performs timing for the quick walking time which is above the movement speed as the target movement speed. A control function (27) of the operation processing part (2) displays the timing result of the quick walking time and the target moving speed on the display part (5).
Owner:PANASONIC CORP
Synchronous play method based on LED text advertisements
ActiveCN101753516AHigh precisionSchool hours are validSynchronising arrangementSystem timeHandling system
The invention discloses a synchronous play method based on LED text advertisements, comprising the following steps: a computer processing system of a vehicle-mounted terminal operates an LED screen timing program in regular time, the LED screen automatically realizes timing, so that the LED screen and the vehicle-mounted terminal share synchronous system time, each time of LCD screen timing is correct to second, the timing result error is confined to an error range of several milliseconds, so the timing accuracy is very high; as a result, the requirement that the LEC screen and the vehicle-mounted play advertisements synchronously is completely realized; in the process of LED screen timing, each time of the implementation of the timing program sees three times of continuous timing, thus ensuring timing effect, improving system fault-tolerant capacity and ensuring normal operation of the system; the vehicle-mounted terminal transmits a programme to a far-end server every half an hour and carries out LED screen timing; or when the programme of the far-end server is updated, the far-end server automatically issues advertisements to the vehicle-mounted terminal, so that the vehicle-mounted terminal can obtain new advertisements entered by the far-end server in time and plays the advertisements according to flight information on time.
Owner:XIAMEN YAXON NETWORKS CO LTD
Method for physical placement of an integrated circuit based on timing constraints
InactiveUS7318211B2Maximum performanceEasily create optimal timing resultComputer aided designSoftware simulation/interpretation/emulationIntegrated circuitTiming results
A method, system, apparatus, and machine-readable medium for physical placement of an integrated circuit based on the timing constraints are provided. The method involves a two-pass physical placement technique. After the first pass of the physical placements of the blocks and the top level, the timing results of the top level and of each block are analyzed. The method involves the computation of latency per gate per unit area (LPGA) of the block ports of each block. Based on the calculated LPGA, the timing constraints of the blocks are updated. The second pass of physical placement is performed, based on the updated timing constraints.
Owner:CISCO TECH INC
Timing method, device and system
InactiveCN106408149AIntegrity guaranteedGuaranteed accuracyRegistering/indicating time of eventsResourcesPower flowCombustion
The application provides a timing method, device and system. The application timely obtains information of the current state of a detected object and then determines whether the detected object is in a moving state or not based on the information of the current state, so that statistics of working time of the detected object is achieved. Therefore, the application does not need to detect change in current and / or voltage of a motor of the detected object and change in liquid pressure or a rotation device, and the application is suitable for operation timing of an internal combustion industrial vehicle while voltage, current, liquid pressure and externally-installed devices such as proximity switches are not required, so that the device installation is enabled to be more convenient, and the equipment cost is lowered. In addition, the application can accurately determine the detected object is in a static or non-working state, or a working state, or the like, so that timing of the whole working of the detected object is achieved, and the integrity and the accuracy of the timing result are ensured.
Owner:SUZHOU YIXINAN IND TECH CO LTD
Timekeeping method and device
The invention discloses a timekeeping method and device. When it is determined that a settimekeeping starting condition is achieved, the timekeeping moment of a system timer is obtained and serves as a first timekeeping moment; when it is determined that a set timekeeping ending condition is achieved, the timekeeping moment of the system timer is obtained and serves as asecond timekeeping moment;the number of times the system timer resets in a process is determined, wherein the process is from the moment when the set timekeeping starting condition is achieved to the moment whenthe set timekeeping ending condition is achieved; a difference valueis calculated by subtractingthe first timekeeping moment from the second timekeeping moment, the product of the number of resetting times and a timekeeping periodic value of the system timer is calculated, and the difference value and the product are determined as timekeeping results. Real-time system timersare reset many times during timing.The timekeeping method and device can determine correct timing results, do not need to restart systems, and ensure the normal operation of businesses.
Owner:TENCENT TECH (SHENZHEN) CO LTD
Architecture of a parallel-processing multi-microcontroller system and timing control method thereof
InactiveUS20070067605A1Accurate timingHardware is simplifiedGeneral purpose stored program computerElectric digital data processingMicrocontrollerParallel processing
The present invention discloses the architecture of a parallel-processing multi-microcontroller system and a timing control method thereof. The multi-microcontroller system of the present invention comprises multiple microcontroller program execution status modules, and under an identical clock, different microcontroller program execution status modules respectively operate at separate clock timings, which is equivalent to that multiple independent microcontrollers simultaneously operate in parallel. The parallel-processing multi-microcontroller system and the timing control method thereof of the present invention can save the portion of hardware cost resulting from adding extra hardware circuits and can effectively overcome the incapability in precisely controlling the timing resulting from timing interferences occurring during executing a program.
Owner:PADAUK TECH
Method and equipment for updating service key
InactiveCN102045160AImprove user experienceDelete time delayKey distribution for secure communicationComputer networkSufficient time
The embodiment of the invention discloses a method for updating a service key. The method comprises that: after a terminal is reset, the terminal reacquires the service key, and the terminal is timed according to the set time length or the decryption times of a program key; if the terminal does not reacquire the service key, when the timing result reaches the preset deletion time, the terminal deletes the original service key; when the timing result does not reach the preset deletion time, the terminal continuously uses the original service key to decrypt the data stream; and if the terminal reacquires the service key, the terminal decrypts the data stream by using a new service key. In the embodiment of the invention, by delaying the deletion time of the service key after the equipment is reset, a user has sufficient time for reacquiring the service key so that the use experience of the user is remarkably improved.
Owner:CHINA MOBILE COMM GRP CO LTD
Power conversion circuit and conversion controller
The invention discloses a power conversion circuit and a conversion controller. The conversion controller is used for controlling a conversion circuit to convert power of an input power supply. The controller comprises a working period control unit, a protection starting control unit and a protection unit. The working period control unit is used for controlling the conversion circuit to convert power according to a feedback signal. The protection starting control unit is used for outputting a plurality of protection starting signals according to timing results of a timing circuit. The protection unit is used for detecting the conversion circuit and generating a protection signal when judging that the conversion circuit is abnormal; and the working period control unit stops operation according to the protection signal, wherein the protection unit has a plurality of protection functions and starts the corresponding protection functions according to the plurality of the protection functions.
Owner:GREEN SOLUTION TECH CO LTD
GNSS time service receiver and a time service implementing method thereof
InactiveCN109709584AImprove anti-interference abilityHigh time accuracyRadio-controlled time-piecesSatellite radio beaconingElectromagnetic environmentBaseband
The invention discloses a GNSS time service receiver and a time service implementing method thereof. The time service receiver comprises an antenna array, a multi-channel radio-frequency signal processing module, a control chip and a clock source module. The antenna array is used for receiving a radio frequency signal; the multi-channel radio-frequency signal processing module is used for carryingout down-conversion and analog-to-digital conversion on the received radio-frequency signal; the control chip is used for completing space-time adaptive anti-interference processing, baseband signalprocessing, time and position information extraction, and clock taming and holding of the radio-frequency signal by reading an algorithm program to obtain an accurate and stable timing result. According to the invention, the GNSS time service receiver has advantages of good anti-interference performance, high timing precision and high integration in a complex environment; and the high time serviceprecision and reliability of the GNSS time service receiver in a complex environment, especially in a complex electromagnetic environment can be guaranteed.
Owner:NANJING 6902 TECH
Display driving circuit, display driving method and display device
The invention provides a display driving circuit, a display driving method and a display device. The display driving method comprises the steps of: performing a timing operation on an operating stateof a display screen, and storing a corresponding timing result in an operating characteristic memory; acquiring a corresponding operating time length of a display according to the timing result; acquiring the operating time length, and determining whether a correction operation needs to be performed on a gamma lookup table; acquiring a corresponding contrast gamma value from an operating characteristic table according to the operating time length when the gamma lookup table needs to be corrected; and calculating a pre-compensation value corresponding to each pixel value according to the contrast gamma value, and updating the gamma lookup table. The display driving circuit, the display driving method and the display device select the corresponding gamma value through calculating the operating time length of the display screen, and can correct the original gamma lookup table according to the corresponding gamma value when the original gamma lookup table needs to be corrected, thereby being conductive to reducing the insufficient effect of image display caused by screen aging.
Owner:RESEARCH INSTITUTE OF TSINGHUA UNIVERSITY IN SHENZHEN
Method and system for validating testbench
InactiveUS7454729B1Computer aided designSoftware simulation/interpretation/emulationValidation testingDesign under test
A method for validating timing violations in a testbench is provided. The method includes obtaining the timing requirements for a design under test from a first file. The timing requirements for the design may be entered as an input to a verification tool. Then, based on the timing requirements of the user, a place and route operation is performed resulting in a design layout. Following the place and route operation, timing results are obtained for the design layout. The timing results may be obtained through simulation. From the timing results, timing values are extracted at the input level so that the inputs may be driven based on those timing values. The timing values compensate for any timing violations that may have resulted from the timing models of the verification tool.
Owner:ALTERA CORP
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