35results about How to "Increase calibration range" patented technology

An imaging system and methods for resolving elements of interest through and obscuring environment by removing undesired signals from the intervening, obscuring environment is disclosed. A passive hyperspectral imaging sensor is calibrated and integrated into a system having a positioning and attitude detection system and an instrument control and data acquisition system that records data from sensors in a three-dimensional data cube having two spatial dimensions and a spectral dimension. Either an active detection and ranging system or a look-up-table approach or both are used to remove the noise generated by the intervening, obscuring environment from the data relevant to the elements of interest.

An oscillation signal generation circuit includes an oscillator and a calibration circuit. The oscillator includes a reference signal source circuit that has a reference signal source outputting a reference signal and converts the output reference signal into a control voltage, a filter that includes a variable resistance and a capacitance and removes noise in the control voltage, a transistor that converts the control voltage which has passed through the filter into a control current and outputs the control current, a core circuit that is driven by the control current and generates an output signal, and an output terminal that outputs the generated output signal. The calibration circuit is connected to the output terminal of the oscillator, detects whether or not the generated output signal is oscillating, and adjusts the current value of the control current by controlling the resistance value of the variable resistance in accordance with the detection result.

The present invention provides a camera module comprising: a lens assembly including a plurality of lenses; an image sensor for converting an optical signal transferred through the lens assembly intoan electric signal; a gyroscope (gyro) sensor for outputting a variation-amount signal in response to movement of the lens assembly and the image sensor; a stabilization control unit for determining,in response to the variation-amount signal, a first compensation value for optical image stabilization (OIS) and a second compensation value for electronic image stabilization (EIS); and a movement compensation unit for performing image stabilization according to the first compensation value and the second compensation value.

Disclosed is a calibration apparatus and method for programmable response frequency selecting elements. The calibration apparatus comprises a basic reference source, a programmable counter, a control logic unit, and a frequency to time constant converter. The programmable counter generates plural different frequency signals required by the frequency selecting elements with different frequency responses. The frequency to time constant converter determines a calibrated capacitance through the timing control signals generated by the control logic unit. This invention makes the process, temperature, and power supply variation for frequency selecting elements free. It allows the frequency selecting elements to have a high accurate, stable, and wide range programming of frequency responses. It is suitable for multi-standard applications. It greatly reduces the chip size, and significantly lowers down the cost for the applications.

The present invention relates to the technical field of motor mounts, and discloses an electric vehicle drive motor mount, comprising a connecting plate and a placement groove opened on the connecting plate, a supporting device for supporting the driving motor is slidably connected in the placing groove, The support device includes a support plate, the support plate is slidably connected in the placement groove, the support plate is provided with a square groove, and a flipping plate is connected to the square groove through the rotation of the second rotating shaft, and the flipping plate is set There is a first through hole, and an extruding device for limiting the supporting device is fixedly installed in the placement groove, and the extruding device is located below the supporting device. In the present invention, a supporting device and an extruding device are arranged, and the extruding device is used to limit the supporting device, so that the supporting device is changed to limit the position of the connecting seat of the electric vehicle drive motor, so that the device can calibrate the connecting seat of the electric vehicle driving motor location for easy assembly.

The invention provides an image correction method and system of an infrared focal plane detector. The method comprises the steps that an infrared focal plane receives infrared light and converts the infrared light to a digital signal so as to enable each picture element of the focal plane to correspond to one pixel of an image; image data are converted to original grey values to be stored; for each pixel, gain and offset correction compensation is conducted in a multi-section correction mode according to the corresponding grey values, and a compensation result is obtained. Real-time dynamic background estimation is conducted on the compensation result, and an estimation background is obtained; estimation background offset processing is conducted on the image; an image obtained after offset processing is output. Compared with the prior art, balancing is conducted on calculated performance, image quality and implementation complexity, infrared correction images are continuously output in a blindness-free mode, computation complexity is reduced, the parameter prestorage number is reduced, and power dissipation of the whole system is reduced on the premise that image quality is ensured.

The invention belongs to the technical field of integrated circuits, in particular to an allowance gain circuit for an analog-to-digital converter in a pipeline structure. The allowance gain circuit at least comprises an operational amplifier, four comparators, three sampling capacitors, a feedback capacitor, six switches, an adder and a coding circuit, wherein results of the comparators are added through the adder and used for controlling the switches through the coding circuit. In the invention, the calibration range of the offset voltage of the comparators is increased by increasing the number of partial comparators and rearranging the positions of the comparators, and an obvious effect can be achieved especially in the allowance gain circuit of a multi-bit structure at each level.

The invention relates to the technical field of inkjet printing, in particular to a color difference processing method, device, inkjet printer and storage medium. The color difference processing method, device, inkjet printer, and storage medium provided by the embodiments of the present invention can determine the abnormal area on the nozzle, and adjust the number of ink droplets ejected by the nozzle holes in the abnormal area within a unit area according to the preset quantity parameters. Quantity, so that the color difference generated when the nozzle prints the target pattern is within the preset allowable range; where, the abnormal area is the distribution area of ​​the nozzle hole that produces the color difference on the nozzle. By adjusting the number of ink droplets ejected per unit area by the nozzle holes in the abnormal area on the nozzle, the color brightness of the nozzle holes in the abnormal area can be printed between the lightness of the lightest and darkest colors that the nozzle can form. Thereby, the calibration range of the chromatic aberration produced by the print head is greatly improved.

The invention relates to a photoelectric response characteristic calibration method for a two-dimensional imaging device, which comprises a ray diffraction grating, a focusing optical system, a two-dimensional imaging device to be calibrated and a computer system, wherein an incident light beam for calibrating the two-dimensional imaging device is a light beam parallel to the plane, the light beam is imaged on the photosensitive surface of the two-dimensional imaging device after being modulated by the space intensity of the ray diffraction grating and being converged by the focusing optical system, the incident light beam forms a series of diffraction sub light spots with modulated light intensity on the photosensitive surface of the two-dimensional imaging device through the beam splitting characteristic of the ray diffraction grating, a plurality of groups of measured data are fused through peak value measuring data of each diffraction sub light spot and peak value theoretical dataobtained by theoretical calculation, the measured data and the corresponding theoretical data are obtained, the two groups of data are combined for completing the photoelectric response characteristic calibration of the two-dimensional imaging device. The photoelectric response characteristic calibration method has high light energy utilization rate, is applicable to the photoelectric response characteristic calibration of the two-dimensional imaging device under the condition with strong light sources and is also applicable to weak light sources, and the calibration range is enlarged throughthe fusion of a plurality of groups of measured data.

The invention discloses a speed calibrator based on Beidou BDS high-precision positioning and a speed calibration method. The speed calibrator based on Beidou BDS high-precision positioning includes: a vehicle-mounted machine and a BDS background; wherein, the vehicle-mounted machine includes a shell, a BDS receiving chip, GPS receiving chip, control system, communication module, LED display screen; wherein, BDS receiving chip, GPS receiving chip, communication module and LED display screen are all connected with the control system control; BDS background includes signal collection module, computer, signal emission module, partition module and storage module; the invention has simple structure and convenient operation, can select a suitable speed calibration method according to the actual satellite signal capture situation, has high calibration precision, and is suitable for market promotion.