38results about How to "Remove offset" patented technology

Systems, methods and computer-readable media are provided for tracking a moving sports object. In one example, a method of tracking a moving sports object includes calibrating a perspective of an image of a camera to a perspective of a Doppler radar for simultaneous tracking of the moving sports object, and tracking the moving sports object simultaneously with the camera and Doppler radar. The method may further comprise removing offsets or minimizing differences between simultaneous camera measurements and Doppler radar measurements of the moving sports object. The method may also include combining a camera measurement of an angular position of the moving sports object with a simultaneous Doppler measurement of a radial distance, speed or other measurement of the moving sports object.

In an analog-to-digital conversion method for converting a difference signal component representing a difference between a reference component and a signal component in an analog signal to be processed into digital data, in a first process, a signal corresponding to one of the reference component and the signal component is compared with a reference signal for conversion into the digital data. Concurrently with the comparison, counting is performed in one of a down-count mode and an up-count mode, and a count value at a time of completion of the comparison is held. In a second process, a signal corresponding to the other one of the reference component and the signal component is compared with the reference signal. Concurrently with the comparison, counting is performed in the other one of the down-count mode and the up-count mode, and a count value at a time of completion of the comparison is held.

The present invention provides method and apparatus for quantifying sample clean up in real time by providing curve-fitting measurements of optical or other physical properties of fluid downhole. Fluid is extracted from the formation surrounding a borehole. As fluid continues to be extracted the composition of the extracted fluid changes, altering the measured values of optical and physical properties of the fluid. Measurements are made of optical or physical properties of the sampled fluid, analysis is performed on the acquired measured data points.

The invention relates to an intelligent composition control method, an apparatus, an electronic device and a storage medium, comprising: obtaining reference information of a picture image to be photographed, wherein, the reference information comprises a standard reference line and an actual reference line of the picture image; Calculating an offset between an actual reference line and a standardreference line in the picture image; adding A visual icon representing the offset to the picture image to guide elimination of the offset. A method for intelligent composition control the model of image scene and target image which can be recognized by convolution neural network is built, and determining a standard reference line suitable for an image scene to be photographed according to the identified image information, determining an offset amount in the current photographing state according to the obtained actual reference line in the current state, and guiding a user to eliminate the offset amount by a visual icon representing the offset amount to take a satisfactory picture.

The present invention provides method and apparatus for quantifying sample clean up in real time by providing curve-fitting measurements of optical or other physical properties of fluid downhole. Fluid is extracted from the formation surrounding a borehole. As fluid continues to be extracted the composition of the extracted fluid changes, altering the measured values of optical and physical properties of the fluid. Measurements are made of optical or physical properties of the sampled fluid, analysis is performed on the acquired measured data points.

According to the present invention, a switched capacitor circuit comprises: an inverting amplifier for removing the offset by using a chopper stabilization circuit; a sampling unit which is connected between an input terminal and the inverting amplifier; and a feedback unit which is connected to the inverting amplifier in parallel.

A method and system are provided for coupling a DRAM and a memory controller during driver training to reduce mismatches by controlling impedances within the system environment. A memory device initializes a bit level voltage on a data net. A driver impedance in a driving element in the controller is modified to yield improvements in timing margins.

A trip hazard removing apparatus includes a saw head and blade connected to guide rail(s), which are connected to a support structure, which is connected to lift arm(s) of a vehicle. The vehicle moves the trip hazard removing apparatus between trip hazards occurring between upper and lower slabs of a sidewalk, placing it on the lower slab adjacent to and in contact with a trip hazard, and lifting it after removing the trip hazard. A trip hazard engaging mechanism automatically locates the saw blade's position and angle relative to and above the upper slab to create appropriate transition surface(s) between the upper and lower slabs as it cuts off the trip hazard. The guide rail(s) allow placing the saw blade's facing the sidewalk's side surface. The saw head and blade are moved along the guide rail(s) across the upper slab and through the side surfaces to remove the trip hazard.

In the reception and demodulation of a communication signal with frequency hopping among a plurality of frequency bands, a demodulator is formed by a balance circuit. The demodulator performs frequency conversion by multiplying signals in_a and in_b, which are obtained by converting a received signal into differential signals, by local signals Lo—1a and Lo—1b with a frequency corresponding to a frequency band of the received signal, which are frequency-switched during a guard interval period of the received signal, in synchronization with a symbol of the received signal. Further, two output ends of the demodulator are charged / discharged through capacitors in synchronization with frequency switching of the local signal so that a voltage difference between the two output ends of the demodulator becomes a prescribed level.

The present invention provides method and apparatus for quantifying sample clean up in real time by providing curve-fitting measurements of optical or other physical properties of fluid downhole. Fluid is extracted from the formation surrounding a borehole. As fluid continues to be extracted the composition of the extracted fluid changes, altering the measured values of optical and physical properties of the fluid. Measurements are made of optical or physical properties of the sampled fluid, analysis is performed on the acquired measured data points.

A chopper amplifier includes a chopper modulator to modulate a certain detection signal and a bias voltage by a certain control signal and output a chopper modulation signal, a first differential amplifier to differentially amplify the chopper modulation signal from the chopper modulator and output a differential modulation signal, a chopper demodulator to demodulate the differential modulation signal from the first differential amplifier by the control signal and output a demodulation signal, a second differential amplifier to extract a detection signal component from the demodulation signal, and a plurality of filters connected at an input terminal of the second differential amplifier and having different cutoff frequencies from each other relative to the demodulation signal.

Provided is a frequency converter that can remove a DC offset and suppress spurious response and intermodulation. The frequency converter receives a reference signal and a local oscillator signal and outputs a frequency component corresponding to the sum or difference of the reference signal and the even-order harmonics of local oscillator signal. The frequency converter includes a reference signal input part including a pair of MOS transistors connected in a differential amplifier form, which have gates to which positive and negative reference signals having a differential phase difference therebetween are respectively input, and first, second, third and fourth frequency conversion parts each of which is connected to the reference signal input part and includes a pair of MOS transistors. Local oscillator signals having a differential phase difference therebetween are input to the gates of the MOS transistors of the first and second frequency conversion parts. Local oscillator signals, which have phases orthogonal to phases of the local oscillator signals input to the first and second frequency conversion parts, are input to the gates of the MOS transistors of the third and fourth frequency conversion parts.

A power clamp for use in a manufacturing environment. The power clamp includes a unitized body having a bore in one end thereof The power clamp also includes a piston arranged within the bore and an end cap secured to the body on the end having the bore. The power clamp has a plurality of first links, one of the first links connected to the piston and at least one second link connected to the first link at a pivot point. A plunger is arranged within an orifice of the body and that plunger is connected to a second link. The power clamp also includes a plurality of identical pins with the pins connecting the links. The power clamp also includes a side plate connected to the body to enclose the clamp and protect it from the manufacturing environment.

In the reception and demodulation of a communication signal with frequency hopping among a plurality of frequency bands, a demodulator is formed by a balance circuit. The demodulator performs frequency conversion by multiplying signals in_a and in_b, which are obtained by converting a received signal into differential signals, by local signals Lo—1a and Lo—1b with a frequency corresponding to a frequency band of the received signal, which are frequency-switched during a guard interval period of the received signal, in synchronization with a symbol of the received signal. Further, two output ends of the demodulator are charged / discharged through capacitors in synchronization with frequency switching of the local signal so that a voltage difference between the two output ends of the demodulator becomes a prescribed level.

A method and system are provided for coupling a DRAM and a memory controller during driver training to reduce mismatches by controlling impedances within the system environment. A memory device initializes a bit level voltage on a data net. A driver impedance in a driving element in the controller is modified to yield improvements in timing margins.

The present invention provides a phase error detection device capable of correctly performing offset correction of a tracking error signal even when there is a defect or an unrecorded position on an optical disc. Utilize the digital signal of 2 sequences as input, use the distance between the zero-crossing points of the digital signal of this 2 sequences to carry out phase comparison, output the phase difference detection circuit (107) of phase comparison result PCR and phase comparison end signal PCC; A phase comparison end signal PCC from the phase difference detection circuit (107) outputs a compensation gate circuit (11) of the offset correction amount, adds the phase comparison result PCR and the phase comparison result PCR, and does not perform the phase comparison when the phase is not executed. Offset correction for the compared positions.

The invention relates to the field of multicarrier frequency domain modulation in an optical communication system, in particular to a detection method and device suitable for a multicarrier frequency domain modulation signal. The method comprises the steps of receiving the multicarrier frequency domain modulation signal, performing fast Fourier transform (FFT) after sampling, obtaining the phase of each frequency point in a corresponding carrier frequency band according to a primary FFT result, calculating the phase difference of each frequency point based on two adjacent FFT results, and then calculating the average value of multiple continuous FFT phase differences of each frequency point. In the frequency band needing to be analyzed, after phase compensation is conducted on each frequency point through the corresponding average value, accumulation of multiple FFT results is conducted, modulo operation is conducted on the results obtained after accumulation, and the frequency points with the enhanced modulo values are the frequency points with subcarriers. According to the invention, the detection accuracy of the multicarrier frequency domain modulation signal after long-distance optical fiber transmission can be improved.

The invention discloses a motor driving circuit and a method thereof. The motor driving circuit includes a Hall sensor, an offset detecting circuit, a driving circuit and a back EMF zero point detector. The Hall sensor generates a Hall signal group, the offset detecting circuit detects the first phase changing point of the Hall signal group, and the driving circuit generates the initial phase changing signal in the pre-operation mode according to the Hall signal group. In the correction mode, the driving circuit stops outputting the initial phase changing signal, the back EMF zero detector detects the back EMF zero point, and outputs the back EMF zero point signal. The offset detecting circuit detects a phase difference between the first phase changing point and back EMF zero point, and determines a difference value between the phase difference and a predetermined phase difference. Then, the phase of the Hall signal group is adjusted according to the difference value.

A trip hazard removing apparatus includes a saw head and blade connected to guide rail(s), which are connected to a support structure, which is connected to lift arm(s) of a vehicle. The vehicle moves the trip hazard removing apparatus between trip hazards occurring between upper and lower slabs of a sidewalk, placing it on the lower slab adjacent to and in contact with a trip hazard, and lifting it after removing the trip hazard. A trip hazard engaging mechanism automatically locates the saw blade's position and angle relative to and above the upper slab to create appropriate transition surface(s) between the upper and lower slabs as it cuts off the trip hazard. The guide rail(s) allow placing the saw blade facing the sidewalk's side surface. The saw head and blade are moved along the guide rail(s) across the upper slab and through the side surfaces to remove the trip hazard.

The invention belongs to the field of unmanned aerial vehicles, and provides an unmanned aerial vehicle device capable of prolonging flight time and an implementation method. The unmanned aerial vehicle device capable of prolonging flight time comprises a body and a master control unit arranged in the body. Auxiliary propellers are further installed around the body, and an airbag device is further installed on the body. The auxiliary propellers are controlled by the master control unit, the rotation planes of the auxiliary propellers are perpendicular to the horizontal plane, and the directions of the rotation planes of the auxiliary propellers are adjustable. The airbag device is arranged on the upper portion of the body structure of the unmanned aerial vehicle, a cavity used for being filled with small-density gas with the density smaller than that of air is formed in the airbag device, and the airbag device is further connected with a discharge valve used for discharging gas in the airbag device. The unmanned aerial vehicle device only consumes a little onboard energy in the process from taking-off to landing preparation and can prolong flight time, and thus the working efficiency of the unmanned aerial vehicle is improved.

Systems, methods and computer-readable media are provided for tracking a moving sports object. In one example, a method of tracking a moving sports object includes calibrating a perspective of an image of a camera to a perspective of a Doppler radar for simultaneous tracking of the moving sports object, and tracking the moving sports object simultaneously with the camera and Doppler radar. The method may further comprise removing offsets or minimizing differences between simultaneous camera measurements and Doppler radar measurements of the moving sports object. The method may also include combining a camera measurement of an angular position of the moving sports object with a simultaneous Doppler measurement of a radial distance, speed or other measurement of the moving sports object.

The invention discloses a food deterioration detecting device with a voice broadcasting function. The food deterioration detecting device comprises a control module. The control module is respectively connected with a sensing module, a liquid crystal display module, a keyboard, a real-time clock module and a voice broadcasting module. The food deterioration detecting device has the advantages that the sensing module is used to detect the moisture, resistance and temperature of food, data offset can be well eliminated, temperature excursion and false detection can be reduced, the device is small in size, high in precision, good in stability, and the like, and the defect that a bacterial culture method for detecting the food is long in time and poor in portability is overcome; the device is multifunctional, can detect the resistance and moisture content of the food, and also has temperature measuring and timing functions; the measured data is digitally displayed through the liquid crystal display module accurately, and the device also provides the voice broadcasting function to allow elder people with poor eyesight to use the device conveniently.

A power clamp for use in a manufacturing environment. The power clamp includes a unitized body having a bore in one end thereof The power clamp also includes a piston arranged within the bore and an end cap secured to the body on the end having the bore. The power clamp has a plurality of first links, one of the first links connected to the piston and at least one second link connected to the first link at a pivot point. A plunger is arranged within an orifice of the body and that plunger is connected to a second link. The power clamp also includes a plurality of identical pins with the pins connecting the links. The power clamp also includes a side plate connected to the body to enclose the clamp and protect it from the manufacturing environment.

The invention discloses a circuit for eliminating the signal offset of a charge amplifier, and the circuit comprises: a front circuit module which is used for outputting a first voltage signal according to a first charge signal; a monitoring circuit module which is used for outputting a monitoring signal according to the first voltage signal; a control module which is used for outputting a first control signal when the monitoring signal meets a preset condition; a sampling hold circuit module which is used for outputting an offset signal according to the first control signal and the first voltage signal and keeping the size of the offset signal unchanged within a certain time, wherein the control module is also used for controlling the measuring equipment to carry out variable testing, and the front circuit module is also used for outputting a second voltage signal to the subtraction circuit module according to the second charge signal; and a subtraction circuit module which is used for outputting a variable signal according to the second voltage signal and the offset signal, wherein by adopting the circuit provided by the invention, the offset of the charge amplifier can be effectively eliminated.

The invention discloses a cable sheath outer diameter adjusting method. The method includes steps: acquiring a sheath inner diameter R3, and setting a target sheath outer diameter R2; measuring a current sheath outer diameter R1; calculating a target screw rotation speed and controlling a screw to rotate at the target screw rotation speed, or calculating a target cable moving speed and controlling a cable to move at the target cable moving speed, wherein N0 refers to a current screw rotation speed, and V0 refers to a current cable moving speed. According to the method, by accurate correction of the screw rotation speed or the cable moving speed, sheath outer diameter offset can be effectively eliminated, large sheath outer diameter offset is avoided, and accordingly the problem of difficulty in control of cable sheath outer diameter uniformity can be effective solved. The invention further discloses a cable sheath outer diameter adjusting system adopting the cable sheath outer diameter adjusting method.

The invention discloses a force measuring device which comprises a force measuring assembly which comprises a support, a force measuring frame connected with the support and a strain detection circuit, and the strain detection circuit comprises a strain gauge arranged on the force measuring frame; the first jig is connected with the force measuring frame and is used for fixing a first piece to be measured; the adjusting module is fixed relative to the bracket; the first jig is connected with the adjusting module and used for fixing a first to-be-tested piece, the second jig is connected with the adjusting module and used for fixing a second to-be-tested piece, the first to-be-tested piece and the second to-be-tested piece are oppositely arranged, and a magnetic force effect exists between the first to-be-tested piece and the second to-be-tested piece; the adjusting module is used for adjusting the distance between the second to-be-tested piece and the first to-be-tested piece. The force measuring device can conveniently measure the magnetic force between the two pieces to be measured, and the measuring precision is high.