74results about How to "Increase gain value" patented technology

A method and an apparatus for reproducing a sound signal are provided. The method includes generating an output sound signal to be transmitted to speakers by transmitting a first input sound signal through a filter; acquiring magnitude information of the output sound signal; determining frequency response parameters related to frequency responses of the filter based on the magnitude information; and adaptively adjusting coefficients of the filter based on the determined frequency response parameters.

Provided is a light diffusion sheet capable of preventing the reflection of an external light that has entered from the light emission surface and of obtaining a high gain, and a projection screen using the light diffusion sheet. In the light diffusion sheet or film, the light diffusion sheet or film having formed thereon a plurality of unit lenses one-dimensionally or two-dimensionally, the unit lens is substantially trapezoidal in cross section; the lower bottom of the trapezoid is made to be a light incidence portion and the upper bottom thereof is made to be a light emission portion; and the unit lens is formed using a material having a prescribed refractive index of N1; a portion, the cross section of that is triangular, and that is located between adjacent two of the unit lenses, is formed using a material having a refractive index N2 lower than the N1 and having added thereto light absorption particles; and when it is assumed that T represents the length of the upper bottom of the trapezoid; H represents the height of the upper bottom thereof; and theta represents the angle defined by the slant of the trapezoid with respect to a normal line to the light emission portion, the relationship holds true that is expressed as: <paragraph lvl="0"><in-line-formula>sin (90°-theta)>N2/N1 </in-line-formula><paragraph lvl="0"><in-line-formula>N1<1/sin 2theta</in-line-formula><paragraph lvl="0"><in-line-formula>0<H<T/(tan (2theta+10°)-tantheta) </in-line-formula>and the surface of the light incidence portion has performed thereon embossing processing.

The invention relates to a signal receiving technology, and discloses an automatic gain control regulating method for received signals and signal receiving equipment. In the method, DwPTS is used as guidance, if the RSSI change of the DwPTS is more than a threshold, the AGC gain value of the corresponding time slot of a current sub-frame is regulated according to the RSSI change value of the DwPTS, a signal of the corresponding time slot in the current sub-frame is received by the regulated AGC gain value; and if the RSSI change of the DwPTS is less than or equal to the threshold, the signal of the corresponding time slot is received directly by the AGC gain value of the corresponding time slot the time slot in the current sub-frame which is calculated by the AGC gain value of the last sub-frame. Therefore, the method can deal with the situation of great signal change, meet the requirement of signal mutation, and improve the accuracy of subsequent signal processing.

A lightweight deployable antenna assembly for, e.g., microsatellites including multifilar (e.g., quadrifilar) antenna (MHA) structures rigidly maintained in an array pattern by a lightweight linkage and collectively controlled by a central antenna feed circuit and local antenna feed circuits to perform phased array antenna operations. The linkage is preferably an expandable (e.g., flexural-scissor-grid) linkage capable of collapsing into a retracted/stowage state in which the MHA elements are maintained in a closely-spaced (e.g., hexagonal lattice close-packed) configuration optimized for payload storage. To deploy the antenna for operation, the linkage unfolds (expands) such that the MHA elements are moved away from each other and into an evenly spaced (e.g., wide-spaced hexagonal) pattern optimized for phased array operations. The MHA structures utilize modified helical filar elements including metal plated/printed on polymer/plastic beams/ribbons, or thin-walled metal tubes. The helical filar elements are radially offset (e.g., by 90°) and wound around a central axis.

An industrial inspection handset is disclosed, comprising a battery assembly for providing power to the handset, wherein the battery assembly comprises a connector for connecting a battery charger, a battery circuit for communicating with a processor in the handset, and a battery charge indicator on the surface of the battery assembly connected to the battery circuit for providing a visual indication of the charge remaining in the battery assembly. A method of power management for an industrial inspection handset is also disclosed comprising the steps of setting a first maximum power output value for the camera illumination for the insertion, monitoring an imager signal processor, to determine that the gain value of the image signal processor is less than a predetermined gain value, and setting a lower second maximum power output value for the camera illumination in order to increase the gain value. Additional methods of power management for an industrial inspection handset are disclosed, comprising the steps of setting a first maximum power output value for the articulation of the insertion tube attached to the handset, monitoring the operator controls to determine that there has been no articulation for a first predetermined amount of time, monitoring the position of the insertion tube to determine whether the insertion tube position is inside or outside of a predetermined zone of coordinates, and reducing or turning off the articulation power to hold the position of the insertion tube.

An organic light emitting diode display, comprising: a display panel on which a plurality of pixels are arranged, each of the pixels comprising an R sub-pixel for generating red light through a white OLED and an R color filter, a G sub-pixel for generating green light through a white OLED and a G color filter, a B sub-pixel for generating blue light through a white OLED and a B color filter, and a W sub-pixel for generating white light through a white OLED; a data operation unit for generating a data operation value by extracting a representative value for each pixel based on three primary color data, determining white data of the corresponding pixel as the representative value, and then subtracting the white data from the three primary color data for each pixel; a gain adjusting unit for generating a gain adjusting value of the three primary color data by multiplying a preset gain value of the three primary color data by the corresponding white data; and a data conversion unit for generating four color compensation data, whose white chromaticity coordinates are compensated for each pixel, by adding the gain adjusting value to the data operation value and matching the corresponding white data to the three primary color data converted by the adding.

The invention discloses a micro-strip antenna unit and an array thereof and belongs to antennas. The antenna unit comprises a first dielectric substrate and a second dielectric substrate positioned over the first dielectric substrate, wherein a primary radiation patch is arranged over the first dielectric substrate, a parasitic patch and a covering dielectric slab are arranged over the second dielectric substrate, an earth plate is arranged under the first dielectric substrate, and a baffle board is arranged under the earth plate. Through arrangement of the parasitic patch in the micro-strip antenna unit, under the assistance of the covering dielectric slab, resonance gain is achieved, the grain value of the micro-strip antenna is improved effectively; aperture-coupled feed of an H-shaped groove and direct feed of the primary irradiation patch are not performed in the same layer of the antenna unit, therefore the isolation is effectively improved, a micro-strip feed network is simple after array combination of the antenna unit, and the using loss is low; and simultaneously, the micro-strip antenna unit and the array can be widely applied to aviation airborne computer systems, and are simple in structure, suitable for industrial production and easy to popularize.

The invention discloses a microstrip phased array antenna applied on an ETC terminal information acquisition system. The microstrip phased array antenna comprises the following three parts: a feeding network which is composed of an RF switch, a crossover and a power divider and is used for distributing signals with different powers and different phases to different ports of a Butler matrix and inputting the signal to a preset port in switching; a wave beam forming network which is composed of improved Butler matrixes and is used for generating the signal with the required phase and inputting to a preset antenna unit; an antenna array, wherein each antenna unit is composed of double radiation sheets with a 90-DEG phase difference. The antenna is mounted right above the middle line of a middle lane. The projection of the antenna in the normal line direction is in the middle line of the middle lane. The microstrip phased array antenna can settle technical problems of wave beam scanning, lane identification, identification distance increase, identification success rate increase, etc.

A display apparatus, a data gain regulating circuit and a data gain regulating method are provided. The display apparatus includes a display module, a backlight module and the data gain regulating circuit. The backlight module provides backlight to the display module. The data gain regulating circuit is coupled to the display module and determines a gain value according to ambient light information and backlight information. The data gain regulating circuit regulates display data according to the gain value to obtain regulated display data and transmits the regulated display data to the display module.

Apparatus and methods for removing jitter and stabilizing the feed back system of a torsional hinged device with minimal changes to the system. The stabilization is accomplished by introducing a selected amount of lateral motion (in addition to the rotational motion) by creating asymmetry in the oscillating device or the drive torque applied to the device.

A traveling device 10 includes ground touching detection means to detect a ground touching state in which a ground touching member touches a road surface, and control means to perform inversion control by controlling the driving of a wheel. When a ground touching state of the ground touching member is detected by the ground touching detection means, the control means suspends the inversion control. Further, when the start of braking is detected by the braking detection means and a ground touching state of the ground touching member is detected by the ground touching means, the control means may suspend the inversion control.

A pressure control system of a fuel cell stack includes: an air supply control unit for controlling a revolutions per minute (RPM) of an air compressor for supplying air to a cathode side of the fuel cell stack based on a required output of the fuel cell stack; a hydrogen supply control unit for controlling a pressure at an anode side of the fuel cell stack with a target pressure based on the required output of the fuel cell stack; and a differential pressure control unit for controlling the air supply control unit or the hydrogen supply control unit to calculate a differential pressure between the anode side and the cathode side of the fuel cell stack, and to modify the target pressure or the RPM of the air compressor based on the calculated differential pressure.

A radome and a microstrip patch antenna having the same are disclosed. The gain value of the microstrip patch antenna having the disclosed radome can be increased while the size thereof remains in a limited size. The disclosed radome comprises: a radome body, having an upper surface and a lower surface; a first gain-enhancing pattern, locating on the upper surface and including a plurality of first ring gain-enhancing units; and a second gain-enhancing pattern, locating on the lower surface and including a plurality of second ring gain-enhancing units. The first ring gain-enhancing unit includes a first conductive ring and a second conductive ring, and the second ring gain-enhancing unit includes a third conductive ring and a fourth conductive ring. Besides, the opening direction of the third conductive ring is perpendicular to the opening direction of the first conductive ring.

The present invention discloses a monopole antenna adapted for a wireless network device. The antenna includes a base portion, a ground portion, a radiating portion and a signal portion. The ground portion extends a predetermined height upwardly from the base portion. The radiating portion is connected to an end of the ground portion away from the base portion and is substantially perpendicular to the ground portion. The signal portion is connected to the radiating portion and is substantially and respectively perpendicular to the signal portion and the ground portion. The signal portion has a feed terminal formed on an end thereof away from the radiating portion. A connecting side, where the ground portion and the base portion are connected, has a width that is smaller than a width of another connecting side, where the ground portion and the radiating portion are connected; and a connecting side, where the signal portion and the radiating portion are connected, has a width that is larger than a width of the end of signal portion away from the radiating portion. The antenna is a single component integrally formed by stamping an electrically conductive thin metal plate, which facilitates not only fabrication thereof, but also the assembly of the antenna to a substrate of the wireless network device and increases the gain and bandwidth of the wireless network device along a vertical direction as well.

An image correction device includes a coordinate transformation unit, a parameter value determination unit, and a correction value calculation unit. The coordinate transformation unit receives first coordinates of at least one pixel data of an illuminated pattern under a first coordinate system, and transforms the first coordinates into second coordinates under a second coordinate system, wherein the second coordinate system is rotated relative to the first coordinate system by an angle with respect to an optical center of the illuminated pattern. The parameter value determination unit determines a respective value of at least one correction parameter according to the position of each of the at least one pixel data in the second coordinate system. The correction value calculation unit calculates an image correction value of each of the at least one pixel data according to the second coordinates and the respective value of the at least one correction parameter.

The invention discloses an AMC-based low-profile circularly-polarized cross dipole antenna and communication equipment. The AMC-based low-profile circularly-polarized cross dipole antenna comprises anupper dielectric substrate, a lower dielectric substrate, a main radiation unit, a parasitic unit, an AMC metasurface and a reflection floor, wherein the upper dielectric substrate and the lower dielectric substrate are arranged in parallel at a certain interval; the main radiation unit and the parasitic unit are arranged on the upper dielectric substrate; the upper surface of the lower dielectric substrate is provided with the AMC metasurface, and the lower surface of the lower dielectric substrate is provided with the reflection floor; and the main radiation unit comprises two pairs of dipoles, the two pairs of dipoles are of a cross-shaped cross structure, and a cross point is located at the center point of the upper dielectric substrate. The antenna has the characteristics of good circular polarization radiation performance, low profile and high gain, and can cover a part of C frequency bands of satellite communication.

A differential amplifier includes a first electrical path formed between a first transistor and a first load impedance; a second electrical path formed between a second transistor and a second load impedance; a tail-current transistor coupled to the first and second transistors; an input end of a feedback amplifier coupled directly to the first and second electrical paths for receiving a differential voltage output signal; and an output end of the feedback amplifier coupled directly to the tail-current transistor for adjusting the current provided through each of the first and second electrical paths. The feedback amplifier includes a non-inverting input node and an inverting input node, each node coupled directly to one or the other of the first and second electrical paths.

A technique for converging Internet of things (IoT) technology with a fifth generation (5G) communication system for supporting data rates beyond a fourth generation (4G) system can be applied to intelligent services. An antenna module includes a first radiator radiating a radio wave through an upper surface, a second radiator formed surrounding an outer periphery of the first radiator, a dielectric having an upper surface disposed under a lower surface of the first radiator, the dielectric being formed to fix the first radiator and the second radiator to be separated based on a first length, a feeder having an upper surface disposed under a lower surface of the dielectric, the feeder coupling an electrical signal to at least one of the radiator or second radiators through the dielectric, and a printed circuit board electrically connected to the feeder by a conductive pattern and supplying the electrical signal to the feeder.

A transmission circuit includes a first-stage circuit, a second-stage circuit, a negative active feedback circuit and a current buffer. The first-stage circuit includes at least an active MOS device for receiving an input voltage and issuing a first voltage signal. The active MOS device has an inductive feature during operation in a high frequency mode to compensate the first voltage signal. In response to the first voltage signal, the second-stage circuit outputs a first output voltage. The negative active feedback circuit may enhance the bandwidth of the first output voltage. The current buffer may enhance the gain value of the first output voltage. A second voltage signal is issued from the first-stage circuit and compensated by the first output voltage transmitted from the current buffer to enhance the bandwidth and the gain value thereof. In response to the compensated second voltage signal, the second-stage circuit outputs a second output voltage.

The invention discloses a display adjusting the brightness according to a display distance, which comprises a liquid crystal module, a sensor, a switch gain circuitry, a microcontroller and a brightness controller, wherein the liquid crystal module comprises a display panel and a backlight module and the display panel is used for displaying images according to the light of the backlight module; the sensor is arranged on one side of the liquid crystal module and is used for generating a sense signal according to the distance between the backlight module and a user; the switch gain circuitry is coupled with the sensor and is used for comparing the sense signal with a plurality of gain values so as to output a measuring voltage; the microcontroller is coupled with the switch gain circuitry and is used for determining the distance between the liquid crystal module and the user according to the measuring voltage; and the brightness controller is coupled with the microcontroller and the liquid crystal module and is used for adjusting the brightness of the display panel according to the distance, which is determined by the microcontroller, between the liquid crystal module and the user,. Because the display of the invention can automatically detect the relative distance between a relatively distant moving object and the liquid crystal module, the display has the characteristic which is not possessed by the traditional liquid crystal module using a sensing element.