90results about How to "Eliminate time difference" patented technology

A method and apparatus of determining a lower bound of an excess delay in a time of arrival measurement of a received signal. Determining the lower bound of an excess delay in a time of arrival measurements includes receiving signals from at least two base stations and determining the time difference of arrival between the received signals from their respective base stations. Then estimating a lower bound of excess delay introduced into the signals received from the base stations based on the time of arrival of the signals from the respective base stations and a known distance between the base stations. The lower bound of excess delay may be used to adjust the estimate of a mobile unit's location based on the time of arrival measurements of the received signals.

There is the problem that since C / A signals in a DIMM are distributed to respective DRAMs through a register in the DIMM and DQ signals are wired directly from terminals in the DIMM, their timing is difficult to synchronize. The register for speeding up the C / A signals of the DIMM that operates with high speed is provided, and a wiring from the register is set to a daisy-chain wiring. Then, by a timing adjustment circuit provided in the DRAM, a wiring delay time difference between the C / A signals and the clock signals, which are different depending on positions of the DRAMs, is such that the sum of a delay time from the register to each DRAM and a delay amount due to the timing adjustment circuit is made equal to a delay time of the farthest DRAM.

A legged robot that runs while repeating a jump cycle including a ground-contact phase from a landing to a takeoff and an aerial phase from a takeoff to a landing is provided. The legged robot adjusts the landing timing after a jump in accordance with a planned timing, thereby attaining a smooth landing. A measuring unit of the legged robot measures an actual aerial phase period in a k-th jump cycle. A subtractor calculates a time difference between a target aerial phase period and the actual aerial phase period in the k-th jump cycle. A target velocity determining unit calculates a target vertical velocity of a center of gravity on a takeoff timing in a (k+1)-th jump cycle so as to eliminate the time difference. Motors in respective joints are controlled so as to realize the calculated target vertical velocity in the (k+1)-th jump cycle. As a result, the time difference generated in the k-th jump cycle in the (k+1)-th jump cycle can be compensated, thereby adjusting the landing timing with the planned landing timing, resulting in the jump motion with smooth landing.

There is the problem that since C / A signals in a DIMM are distributed to respective DRAMs through a register in the DIMM and DQ signals are wired directly from terminals in the DIMM, their timing is difficult to synchronize. The register for speeding up the C / A signals of the DIMM that operates with high speed is provided, and a wiring from the register is set to a daisy-chain wiring. Then, by a timing adjustment circuit provided in the DRAM, a wiring delay time difference between the C / A signals and the clock signals, which are different depending on positions of the DRAMs, is such that the sum of a delay time from the register to each DRAM and a delay amount due to the timing adjustment circuit is made equal to a delay time of the farthest DRAM.

An imaging apparatus includes an imaging device, an imaging device deriving unit and a signal processing unit. Pixels of the imaging device include a first pixel group and a second pixel group. The imaging device driving unit exposes the first pixel group during a first exposure period, exposes the second pixel group during a second exposure period, and reads first image data captured by the first pixel group and second image data captured by the second pixel group separately. The signal processing unit performs image processing for the first and second image data. A first shooting mode and a second shooting mode are provided. In the first shooting mode, the signal processing unit performs the image processing for the first and second image data separately to generate two pieces of subject image data. In the second shooting mode, the signal processing unit combines the first and second image data.

The invention discloses a self-starting emergency rescue fast handling system for expressway. The self-starting emergency rescue fast handling system for the expressway comprises at least a plurality of microwave vehicle detectors and a plurality of laser digital cameras, all of which are arranged on some sections of the expressway, a monitoring center device for processing, storing and transmitting information acquired by the microwave vehicle detectors and the laser digital camera, a GIS (Geographic Information Display) geographic information display system and a fast handling system. The self-starting emergency rescue fast handling system for the expressway is capable of increasing the emergency rescue response speed on the expressway to a large extent, and also capable of reducing the labor involved in the whole process, and thus has the advantages of high efficiency, high speed and automation.

The invention relates to a device and method for testing mechanic performance of materials under dynamic dual-shaft two-way loading, in particular to a dynamic dual-shaft two-way stretch loading device and an experiment method. The dynamic dual-shaft two-way stretch loading device comprises a control module, a main circuit charging and discharging module, a capacitor set module and a loading platform module, wherein the loading platform module comprises four identical loading guns and four waveguide rods with the same length, the identical loading guns conduct stress wave loading on a specimenin four directions, transverse loading and longitudinal loading are perpendicular, stress waves generated in the same axial direction share the same amplitude and pulse width, and thus the errors generated in waveforms and times in the propagation process of the stress waves are reduced; meanwhile, it is guaranteed that the specimen is in a dual-shaft stress state, the stress state in the specimen is also symmetrically distributed, and the influence of shearing strength components in the loading process is reduced. By means of the dynamic dual-shaft two-way stretch loading device and the experiment method, the problem in the prior art that synchronous loading of the dual-shaft two-way stress waves cannot be achieved can be solved.

The invention relates to a low-frequency array eddy current detection device and a detection method for corrosion defects of a steel pipe inner wall. According to the technical scheme, the low-frequency array eddy current detection device comprises an eddy current detection main machine, a connecting wire and a low-frequency array eddy current probe, wherein the eddy current detection main machineis connected with the low-frequency array eddy current probe through the connecting wire; a main machine shell body is provided with a display device and a probe connection socket respectively; the shell body is internally provided with a low-frequency oscillator, a lithium battery, a controller, an amplifier, a balance filter, a phase shifter, a gain adjustable amplifier and a digital to analogconverter respectively. According to the low-frequency array eddy current detection device, the interference of space scattering leakage magnetic flux is eliminated through a magnetic shielding technology of a magnetic tank and shielding coils and the defect resolution is improved; eight detection coils can be used for imaging independently in a detection process and the detection sensitivity keeps consistent all the time so that leak detection of the defects is avoided; the defects of the steel pipe inner wall of a heated surface covered with the probe can be detected in one-step operation and reciprocated operation is not needed; the low-frequency array eddy current detection device is convenient to use and has a good effect.

The invention relates to an intelligent street lamp control system, which comprises a lighting device, a light intensity detecting and timing circuit, a single-chip for storing software programs, a reset circuit, a timing time display circuit and a controlled silicon circuit, wherein the light intensity detecting and timing circuit is connected with the single-chip, the timing time display circuit, the controlled silicon circuit and the lighting device in turn, and the reset circuit is connected with the single-chip. The intelligent street lamp control system has the advantages of simple structure design, low cost and energy conservation. The system can be widely used for controlling street lamp light, lighting systems, neon lamps and advertising lamps, can prolong the service life of bulbs and prevent a contact switch from generating sparks, and is suitable for use on inflammable and explosive special occasions.

The invention provides a noise-sensitive volume controller and noise-sensitive volume control method for automatically correcting a reproduction sound volume in accordance with speed information and noise information in an audio system on a vehicle.Noise information is acquired by a noise detecting microphone 2, speed information is acquired by a speed sensor 1 etc, and these items of information are inputted to a microcomputer 7. The microcomputer 7 reads a program 13 stored in a memory 8, and calculates a final correction quantity according to an instruction of the program 13. The microcomputer 7 judges whether to apply a correction quantity based on the noise information or the correction quantity based on the speed information or to increment and decrement these two types of correction quantities. Accordingly, an optimal played-back volume corresponding to a traveling condition can be outputted.

An inputted video audio signal is temporarily memorized in a video and audio memorizing section 310. Auxiliary information appended to the video audio signal is temporarily memorized in an auxiliary information memorizing section 320. A memory control device 620 controls write and read operations of the video audio signal with respect to the video and audio memorizing section 310 and write and read operations of the auxiliary information with respect to the auxiliary information memorizing section 320. The video audio signal read from the video and audio memorizing section 310 and the auxiliary information read from the auxiliary information memorizing section 320 are sequentially recorded on a recording medium 500 by a recording device 400. The memory control device 620 stores the video audio signals equivalent to a time length equal to or exceeding an amount of time required from a time point when a recording-start request with respect to the recording medium 500 is made until the recording actually starts with respect to the recording medium 500 in the video and audio memorizing section 310 to thereby delay the video audio signals by an amount of time during which the video audio signals are stored and records the delayed video audio signals on the recording medium. The memory control device 620 further stores the auxiliary information appended to the video audio signals in the auxiliary information memorizing section 320 for a time period substantially equal to the delay of the video audio signals to thereby delay the auxiliary information by an amount of time during which the auxiliary information is stored and records the delayed auxiliary information on the recording medium 500. The video audio signal and its relevant auxiliary information (time code, metadata, CUE audio signal, and the like) can be thereby recorded on the recording medium 500 with no time delay relative to each other.

The invention relates to a shafting hot alignment device and a shafting hot alignment method. Horizontal and vertical eddy current sensors are disposed at shafting bearing positions or alignment required positions of a unit around a journal. The horizontal and vertical eddy current sensors are used to measure shafting lateral clearance and vertical clearance respectively. Reflecting paper is adhered to a shaft at the alignment required position, and a revolution speed sensor corresponds to the reflecting paper is used for keyway-phase angle marking. Lateral clearance and vertical clearance value signals of the shafting of the eddy current sensor acquisition unit are processed by an alternating current blocking circuit and a signal attenuation circuit and are then transmitted into an ADC (analog to digital converter) and converted into digital signals, and the digital signals are transmitted to a rear-end ARM (advanced RISC machines) master control chip. When the shafting of the revolution speed sensor acquisition unit rotates to the reflecting paper, a signal of instant phase marking angle value is output, a square signal is output to the ARM master control chip, the signals are subjected to difference calculation by the ARM master control chip through hot alignment software, and data signal of shafting position compensation value required by hot alignment is output to a data output device.

The invention provides a ground station fusion system and a ground station video data fusion method. The ground station fusion system comprises an unmanned aerial vehicle and a ground station; the unmanned aerial vehicle is connected with the ground station through a communication link; the unmanned aerial vehicle comprises a video capturing module which is used for shooting a video image, and transmitting the video image to the ground station through the communication link in the form of a video signal; the ground station comprises a video acquisition module, an event identification module, a data analysis module, a display module and an event processing library; the video acquisition module is used for acquiring a video signal flow in the communication link by utilizing DShow; the event identification module is used for identifying events in the video signal flow by utilizing the OPENCV algorithm; the data analysis module is used for acquiring and analyzing control parameters of the unmanned aerial vehicle; the display module is used for displaying the events in the video signal flow and the analyzed flight control parameters together; the event processing library is used for processing an identified abnormal event and an analyzed abnormal parameter; the time difference of switching independent images is eliminated; the ground station fusion system and the ground station video data fusion method are conductive to assisting in controlling the unmanned aerial vehicle, and are more efficient and convenient; the user experience is improved.

The embodiment of the invention discloses a meter-class aluminum alloy forging ring quenching method, comprising the following steps: preserving heat of a meter-class aluminum alloy forging ring which is arranged horizontally in a quenching furnace, and simultaneously spraying and cooling the surface of the incircle of the meter-class aluminum alloy forging ring, the surface of the excircle of the meter-class aluminum alloy forging ring and the upper surface and the lower surface which are connected with the surface of the incircle of the meter-class aluminum alloy forging ring and the surface of the excircle of the meter-class aluminum alloy forging ring with quenching medium. The meter-class aluminum alloy forging ring is horizontally quenched with solid solution and is quenched by simultaneous spraying in the quenching furnace. When the meter-class aluminum alloy forging ring is horizontally quenched with the solid solution, the meter-class aluminum alloy forging ring can not deform too much in the radial direction into the shape of the ellipse due to dead weight. When the meter-class aluminum alloy forging ring is quenched by simultaneous spraying, all the parts of the meter-class aluminum alloy forging ring can contact the quenching medium at the same time without time difference, and all the parts of the meter-class aluminum alloy forging ring can be cooled simultaneously and uniformly, thus the meter-class aluminum alloy forging ring can be quenched without deforming too much in the radial direction and the axial direction due to nonuniform quenching internal stress, and the dimension precision of the meter-class aluminum alloy forging ring can be improved.

The invention discloses a three-color fluorescent microscopic imaging system, which comprises a three-color laser beam combination module, a first dichroscope, an objective lens and a three-color fluorescent imaging module; the three-color laser beam combination module is used for combining three monochromatic lights into a beam of three-color laser, and projecting the three-color laser on the first dichroscope; the first dichroscope reflects the laser and transmits fluorescence simultaneously, and is used for reflecting the three-color laser and projecting the three-color laser on the objective lens; the objective lens is used for transmitting the three-color laser and collecting excited mixed fluorescence, and projecting the collected mixed fluorescence on the first dichroscope; the first dichroscope is used for transmitting the mixed fluorescence, and projecting the mixed fluorescence onto the three-color fluorescent imaging module; the three-color fluorescent imaging module is used for separating the mixed fluorescence and imaging. According to the system, by utilizing the modularized three-color laser beam combination module and three-color fluorescent imaging module, three-color fluorescent imaging light paths are combined, adjustment and maintenance are facilitated, finally three-color fluorescent simultaneous imaging is realized, and time difference among images is eliminated.

This invention relates to a data buffer storage method for a wide band CDMA multiroute diversity receiver, which uses storing input data by a memory group, a counter generates write-address and write-control signals to fetch data according to the memory read-address generated from the multiroute phase and the write-address to output the data for demodem after rearray to eliminate the time difference of demodem for different multiroute-phase offsets to eliminate multiroute-phase time difference and reduce the complexity of successive process.

The invention provides a high-efficiency drug dissolution tester which comprises a head and an engine base, wherein the head is fixed above the unit in a lifting manner by virtue of a hydraulic cylinder; a water bath is arranged in the engine base; dissolution cups are arranged in the water bath in a matrix manner; a two-area synchronous speed regulation mechanism is arranged on the head; the two-area synchronous speed regulation mechanism comprises an upper supporting plate arranged in the head; two synchronous speed regulation assemblies are arranged on the upper supporting plate; each synchronous speed regulation assembly comprises six stirring mechanisms; each stirring mechanism corresponds to one dissolution cup; each stirring mechanism comprises a fixing seat; a stirring shaft is arranged on the fixing seat in an inserted manner; a synchronizing shaft is arranged on the top of each fixing seat; and a first synchronous pulley is arranged on each synchronizing shaft. According to the high-efficiency drug dissolution tester disclosed by the invention, the rotation speeds can be respectively fixed in separate areas, the rotation speed in each area can be independently set, the working efficiency is improved, and experimental errors are reduced; and meanwhile, the dosing mechanism is improved, and the experimental accuracy is further improved.

The application discloses an audio-video data synchronization method, a device and a system. The method comprises the following steps: acquiring audio-video data; acquiring distance; computing transmission time; updating the timestamp of the audio data; and synchronizing the audio-video data according to the updated timestamp. The device comprises an audio acquisition module, a video acquisition module, a distance acquisition module, a time computing module, a time updating module, and a data synchronization module; the system comprises a camera for acquiring video data, audio equipment for acquiring the audio data, a distance sensor arranged on the audio equipment for acquiring the distance, and control equipment respectively connected with the camera, the audio equipment and the distance sensor and used for receiving the data, computing the time, updating the timestamp and synchronizing the data. By using the method disclosed by the embodiment of the invention, the synchronization accuracy of the audio data and the video data is improved.

The invention relates to a quantitative analyzing method for positioning of low-frequency array eddy current. According to the technical scheme, the quantitative analyzing method for positioning of low-frequency array eddy current comprises the following steps: A, detecting and calibrating a waste determining standard; B, carrying out defect positioning; and C, quantifying defects by using a three-dimensional C scanning image processing function. Interference of space scattered leakage magnetic flux is eliminated by a magnetic tank and a magnetic shielding technology of a shielding coil, defect resolving power is improved, in a detecting process, eight detecting coils can be used for imaging independently, detecting sensitivity can be always consistent, leak detection on defects is avoided, probe covered heated surface steel tube inner wall detects can be detected by one-time operation, repeated operations are not required, by the quantitative analyzing method for positioning of the low-frequency array eddy current, by a low-frequency array eddy current probe and imaging and displaying advantages of three-dimensional C scanned stereo images, the problems of positioning and quantifying of corrosion defects of the inner wall of a heated surface tube of a boiler of a power station is solved, the detection precision and field working efficiency are improved, and reliable and stablerunning of the heated surface tube of the boiler of the power station is ensured.

An image forming apparatus including a developing device corresponding to a color component, comprises: a conversion unit configured to accumulate, for each color component, values of respective pixels for each color component that fall within a predetermined range of image data, and to convert the accumulated value into a count value of the color component; an addition unit configured to add, to the image data, the count value of each color component that has been converted by the conversion unit; and a control unit configured, when forming an image based on the image data, to supply toner to the developing device of each color component in accordance with the count value of the color component that has been added by the addition unit.

The present invention discloses an embodiment of a browser timing method. The method comprises: a client browser reads a webpage code of a server and records actual time of a present client; the client browser executes the webpage code to trigger an initialized timing event and display timing time on a page; after a present timing event, the client browser calculates a time interval of triggering the next time of the timing event according to the total number of times of triggering the timing event, a minimum timing interval and total time elapsed since the start of executing the webpage code; and the client browser triggers the next time of the timing event after the calculated time interval is elapsed. The browser timing method can prevent the condition that errors generated by executing a code are accumulated; and after one time of synchronization of the client bowser and the server is finished, the client bowser can implement high-accuracy timing without the dependence on the Internet. The present invention further discloses an embodiment of a browser timing system, which can implement the embodiment of the browser timing method of the present invention.

The invention discloses a long-distance guiding method for the paradrop of cargo by a transport plane, which comprises the following steps of: computing a distance difference and a time difference according to an original total flying distance and time and a desired total flying distance and time; firstly regulating the distance at each constant-speed stage to eliminate the time difference, updating a state initial value after regulating the distance at each constant-speed stage; then regulating the time at each constant-speed stage to eliminate the distance difference, and updating a state initial value after regulating the time at each constant-speed stage; ending the steps when achieving an regulating target; and when the time difference or the distance difference required to eliminateis over a critical range and the regulating target cannot be achieved, ending the method. The long-distance guiding method can adapt to a condition that the distance difference and the time difference are in coexistence so that the desired total flying time and the desired total flying distance can be achieved simultaneously.

Provided is a switched capacitor amplifier capable of outputting a stable output voltage. The switched capacitor amplifier is capable of operating so as to eliminate a charge / discharge time difference between an input capacitor (18) and an output capacitor (19). Accordingly, in a shift from a hold state to a sample state, for example, even if one terminal voltage (V2) of the output capacitor (19) abruptly increases to an output voltage (VOUT), another terminal voltage (Vs) of the output capacitor (19) does not increase abruptly. In other words, an input voltage to an internal amplifier (11) does not increase abruptly. Therefore, an output voltage of the internal amplifier (11) becomes stable and accordingly the output voltage (VOUT) becomes stable as well.

A method and apparatus of determining a lower bound of an excess delay in a time of arrival measurement of a received signal. Determining the lower bound of an excess delay in a time of arrival measurements includes receiving signals from at least two base stations and determining the time difference of arrival between the received signals from their respective base stations. Then estimating a lower bound of excess delay introduced into the signals received from the base stations based on the time of arrival of the signals from the respective base stations and a known distance between the base stations. The lower bound of excess delay may be used to adjust the estimate of a mobile unit's location based on the time of arrival measurements of the received signals.

An imaging apparatus includes an imaging device, an imaging device deriving unit and a signal processing unit. Pixels of the imaging device include a first pixel group and a second pixel group. The imaging device driving unit exposes the first pixel group during a first exposure period, exposes the second pixel group during a second exposure period, and reads first image data captured by the first pixel group and second image data captured by the second pixel group separately. The signal processing unit performs image processing for the first and second image data. A first shooting mode and a second shooting mode are provided. In the first shooting mode, the signal processing unit performs the image processing for the first and second image data separately to generate two pieces of subject image data. In the second shooting mode, the signal processing unit combines the first and second image data.

The invention discloses a multi-terminal remote current transformer checking system based on a GPS and belongs to the field of electrical equipment checking. The checking system comprises n (n>1) current transformers, a GPS synchronization module, a checking module, a microcomputer protective device and a result analysis module, wherein the output of the GPS synchronization module is connected with the input of the checking module, the output of the checking module is connected with primary inputs of the current transformers, outputs of the current transformers are connected with the input of the microcomputer protective device, and the output of the microcomputer protective device is connected with the result analysis module. According to the checking system, the GPS module is used for guaranteeing the synchronism of the checking, so that synchronization checking work is convenient and feasible and high in accuracy; the reliability of checking results can be guaranteed due to the checking module; staff adjust parameters to eliminate time differences after the result analysis module gives signal differences, and normal operation of the microcomputer protective device can be ensured.

Though simple in construction, an electronic balloting module and an electronic balloting method according to the invention can prevent disguise and negation, can eliminate a time difference resulting from an area difference and can also prevent tampering of an electronic balloting content. The electronic balloting module includes an interface 11 connected to an electronic equipment terminal for conducting electronic balloting through a network, a timepiece for generating time information, a storage unit and an operation unit each having a tamper-resistant structure, time calibration means connected to a predetermined time supervisory center through the electronic equipment terminal at least when the calibration means is operated, subjected to time calibration by the quartz timepiece and receiving a time supervision certificate, and time stamp means for acquiring time information of the time as electronic balloting time information from the quartz timepiece and outputting. an electronic certificate obtained by affixing a signature to the electronic balloting information and the electronic balloting time information by a secrete key of a predetermined public key cipher system with the time supervision certificate to the electronic balloting means provided that the time stamp means receives electronic balloting data from the electronic balloting means of the electronic equipment terminal or electronic balloting information comprising a unidirectional function value of the electronic balloting data.

The invention discloses an external double-light-source colposcope imaging system which comprises an imaging system and a light source system. The imaging system comprises an external colposcope bodyfor acquiring an image and an image acquisition unit for splitting light; the light source system comprises a near-infrared light source and an LED white light source, wherein the centers of light beams emitted by the near-infrared light source and the LED white light source are overlapped with the imaging center of the colposcope body after shaping, so that the colposcope body can simultaneouslyacquire visible light images, near-infrared fluorescent images and fusion images. The external double-light-source colposcope imaging system has the advantages that the amplification factor is high, the resolution is high, visible light-near-infrared fluorescence dual-mode imaging to cervical tissues and vaginal tissues is achieved, and pathological change tissues at each stage can preliminarily marked and identified; the shaped light beams can simultaneously display a high-resolution near-infrared fluorescence image and a white light image to realize real-time video output; the external structure is adopted, the operation is convenient, the use is sanitary, and the practical application is facilitated.