100results about How to "Meet the noise" patented technology

Systems, methods and devices related to detecting and transmitting images. Imaging system and devices, as well as methods of using such that are provided herein include flicker detection and / or correction; and / or built-in self test (170) associated with various analog circuitry in the imaging devices; and / or power reduction ability; and / or pixels with charge evacuation functionality; and / or parallel to serial conversion (190) unit and associated serial output interface (106); and / or other advanced functionality.

Methods, systems and apparatus are provided for sorting particles in a stream of a sample in a flow cytometer by producing from a stable sort having desirable sort characteristics multiple images of a portion of the stream; generating from the multiple images an averaged numerical reference standard representative of the stable sort; continuously collecting during the sorting multiple running images of the portion of the stream; generating from the multiple running images at least one numerical sample average representative of the sample sort of each collection of the multiple running images; and comparing each numerical sample average to the numerical reference standard and determining whether a sample average exhibits a deviation from the reference standard that requires an adjustment of the sort. The sort may then be adjusted to eliminate or reduce the deviation and maintain the stable sort of the reference histogram. A novel imaging apparatus may be employed in a flow cytometer performing this method.

A chopped Hall effect sensor topology includes a switched Hall plate, an amplifier responsive to an output of the switched Hall plate and a filter stage responsive to the output of the amplifier and including an anti-aliasing filter and a selective filter that is tuned to the modulation frequency. The switched Hall plate includes a Hall element and a Hall plate modulation circuit that modulates the Hall offset signal component or the magnetic signal component. In embodiments in which the Hall offset signal component is modulated by the switched Hall plate, the amplifier, if chopped, includes an even number of additional modulation circuits. In embodiments in which the magnetic signal component is modulated by the switched Hall plate, the amplifier contains an odd number of modulation circuits. The described topology provides a low noise, fast response time Hall effect sensor.

A chopped Hall effect sensor topology includes a switched Hall plate, an amplifier responsive to an output of the switched Hall plate and a filter stage responsive to the output of the amplifier and including an anti-aliasing filter and a selective filter that is tuned to the modulation frequency. The switched Hall plate includes a Hall element and a Hall plate modulation circuit that modulates the Hall offset signal component or the magnetic signal component. In embodiments in which the Hall offset signal component is modulated by the switched Hall plate, the amplifier, if chopped, includes an even number of additional modulation circuits. In embodiments in which the magnetic signal component is modulated by the switched Hall plate, the amplifier contains an odd number of modulation circuits. The described topology provides a low noise, fast response time Hall effect sensor.

Porous damping material (40) is attached to an entire inner circumference of the fan shroud (20) opposing to an end of a fan (4) and is exposed to opposing space without using conventional perforated metal. Accordingly, jet noise caused by strong swirl between the fan (4) and the fan shroud (20) can be damped by the damping material (40) and impulsive sound scarcely occurs. Thus, both of the impulsive sound and the jet noise can be effectively damped, thereby securely reducing noise. The pours member (401) constituting the porous damping material (40) is a die-molding product made by a die (150) having a cavity (153).

A vehicle includes a motor for driving wheels WH, an inverter to drive the motor, and a control device to perform PWM control of the inverter. The control device performs synchronous PWM control in a case where an electric current supplied to the motor by the inverter or torque generated in the motor is larger than a threshold value; and performs the synchronous PWM control or non-synchronous PWM control in a case where the electric current or the torque is smaller than the threshold value and sets carrier frequency or a pulse number of the PWM control to be higher than the case where the electric current or the torque is larger than the threshold value. Thereby, it is possible to provide a vehicle of achieving reduction of noise, reduction of cost and improvement of fuel consumption in a balanced manner.

Porous damping material (40) is attached to an entire inner circumference of the fan shroud (20) opposing to an end of a fan (4) and is exposed to opposing space without using conventional perforated metal. Accordingly, jet noise caused by strong swirl between the fan (4) and the fan shroud (20) can be damped by the damping material (40) and impulsive sound scarcely occurs. Thus, both of the impulsive sound and the jet noise can be effectively damped, thereby securely reducing noise. The pours member (401) constituting the porous damping material (40) is a die-molding product made by a die (150) having a cavity (153).

A semiconductor device with a TSV and a shelter is provided. The semiconductor device includes a substrate, a circuit area, at least a TSV and a shelter. The circuit area and the TSV are disposed on the substrate, and the TSV penetrates through the substrate. The shelter is disposed on the substrate and at least one part thereof is between the circuit area and the TSV in order to shelter EMI between the TSV and the circuit area. The novel structure prevents the circuits in the circuit area being affected by noise caused by TSV when TSV acts as a power pin.

A mechanical quantity measuring apparatus is provided which can make highly precise measurements and is not easily affected by noise even when it is supplied an electricity through electromagnetic induction or microwaves. At least a strain sensor and an amplifier, an analog / digital converter, a rectification / detection / modulation-demodulation circuit, and a communication control circuit are formed in one and the same silicon substrate. Or, the silicon substrate is also formed at its surface with a dummy resistor which has its longitudinal direction set in a particular crystal orientation and which, together with the strain sensor, forms a Wheatstone bridge. With this arrangement, even when a current flowing through the sensor is reduced, measured data is prevented from being buried in noise, allowing the sensor to operate on a small power and to measure a mechanical quantity with high precision even when it is supplied electricity through electromagnetic induction or microwaves.

The invention discloses a foam concrete, which comprises admixture, cementing material and chemical auxiliary agent, wherein the weight percentage of the admixture in the foam concrete is 25-40%, the weight percentage of the cementing material in the foam concrete is 45-75%, the weight percentage of the chemical auxiliary agent in the foam concrete is 5-25%, the cementing material comprises cement clinker, calcium oxide and bone gelatin powder, and the mass ratio of the three ingredients in the cementing material is 2: 2: 1. The invention further discloses a preparation method of the foam concrete. The preparation method comprises the following steps: foam technology, slurry processing, chemical auxiliary agent processing, mixing, shaping and curing. The foam concrete has the advantages that the cementing material is made of cement clinker, calcium oxide and bone gelatin powder and the use of a great amount of cement is avoided, so that the coal resources required for producing cement is reduced, which not only relieves the tension of energy utilization, but also can improve the compressive strength, leakage resistance, sound insulation effect of the foam concrete.

An analogue output signal of a sensor which comprises a carrier signal with a carrier frequency ωC which is modulated by a measurement size is sampled with a sampling frequency ωA to receive a sampled sensor output signal. The frequency ωA of the sampling signal is set so that it is an integer divisor n of the carrier frequency ωC, wherein the phase of the sampling signal is set so that the sampling signal is synchronous to the sensor output signal. The sampled sensor output signal is filtered now to remove periodically repeated signal components from the sampled sensor output signal. Then a filtered useful signal is received, wherein its amplitude is proportional to the measurand detected by the sensor.

A molded and shaped acoustical insulating vehicle panel having a dry-laid needled fibrous composite composed of a first portion of about 50 to 80 percent meltable binder fibers and about 20 to 50 percent stable fibers and having a second portion of about 20 to 50 percent meltable binder fibers and 50 to 80 percent of staple fibers. The meltable binder fibers are in a molded and resolidified state such that the resolidified binder fibers of the first portion form a substantially continuous, semi-impervious, densified skin integrally associated with and bonded to a surface of the first portion. The molded composite is in such a heat and pressure molded state that the composite has over a predominance of its area a density of from about 12 to 22 lbs. / cubic foot (192 to 352 kg / cubic meter) and the panel is sufficiently rigid as to be self-supporting.

A method and system for the distribution of water in a high rise building is provided using a minimum number of piping risers. The system has a domestic cold water riser, and a domestic hot water supply riser and a return riser. At each serviced floor, a cold water supply main extends from the domestic cold water riser and a hot water supply main extends from the domestic hot water supply riser. On each floor at which riser pressure is higher than domestic use pressures, a valve reduces the pressure of the entire cold water supply main to domestic use pressures. One or more valves at each of one or more suites on the floor reduce the pressure of the hot water to each suite, leaving the hot water supply main for the floor at full riser pressure. Coupling fan-coils with chilled water supply and the full pressure domestic hot water provides an efficient piping system for both environmental controls and domestic hot water use. Regular and periodic circulation through fan-coils avoid stagnation of the domestic hot water supply.

A vehicle includes a motor for driving wheels WH, an inverter to drive the motor, and a control device to perform PWM control of the inverter. The control device performs synchronous PWM control in a case where an electric current supplied to the motor by the inverter or torque generated in the motor is larger than a threshold value; and performs the synchronous PWM control or non-synchronous PWM control in a case where the electric current or the torque is smaller than the threshold value and sets carrier frequency or a pulse number of the PWM control to be higher than the case where the electric current or the torque is larger than the threshold value. Thereby, it is possible to provide a vehicle of achieving reduction of noise, reduction of cost and improvement of fuel consumption in a balanced manner.

An active noise control system is provided which cancels a noise using a sound radiated from a speaker driven by an output from an adaptive notch filter. The system employs output signals from an adder or simulation cosine-wave and sine-wave signals, an error signal or an output signal from a microphone, and a compensated signal from the adder or a signal available for acoustically transferring an output from the adaptive notch filter to the microphone in accordance with initial transfer characteristics to update the filter coefficient of the adaptive notch filter. This configuration allows the system to operate with stability even when the acoustic transfer characteristics vary with time or under circumstances where there exists a significant amount of incoming external noises. The system also prevents overcompensation for a noise at the ears of a passenger in a vehicle, thereby proving an ideal noise reduction effect.

A method, apparatus and system are disclosed for utilizing a mechanical air redirection device with air cooled computer assemblies in order to evenly distribute airflow to provide balanced cooling of heat producing components, such as memory chips and boards. The present invention improves the thermal distribution and dissipation of heat for computer and memory systems when some memory devices are removed or left uninstalled.

According to one embodiment, an image processor has a resolution increase module, a detector, and a controller. The resolution increase module is configured to perform super-resolution processing so as to restore a first video signal to a second video signal having a second resolution higher than the first resolution. The detector is configured to detect at least one of an information amount of the first image signal, a noise amount of the first image signal, and a type of a terminal to which the first video signal is input. The controller is configured to change a degree of a super-resolution processing performed by the resolution increase module based on a detection. result of the detector.

Large diameter axial Super Low Noise flow fans and commercial air cooled apparatuses incorporating such fans are provided. The large diameter axial flow fan is mounted on the air cooled apparatus for generating an axial air flow in the air cooled apparatus for accomplishing the cooling. The fan has a diameter of at least four feet. The fan has plurality of blades. Each blade includes a leading edge opposite a trailing edge. The entire of the leading edge of each of the blades is linear and forward swept, and each blade includes a metallic outer surface.

The invention regards a scheme for generating a probe noise signal to be used in an anti feedback system of an audio system. The audio system comprises e.g. a microphone for capturing an audio signal, an audio signal processor for adaptation of the audio signal and a receiver for generation of an audible signal. According to an embodiment of the invention, a noise signal is injected into the audio signal path between the microphone and the receiver and used for estimating acoustical feedback, the noise signal being generated by the following steps:converting a digitized audio signal to the frequency domain, in order to obtain a series of magnitude and phase values,changing the phase values such that the phase of the resulting signal becomes less correlated, preferably substantially un-correlated, to the original signal,converting the magnitude and phase back to a time domain signal using the changed phase values.The invention may e.g. be used in a hearing aid, a headset or a pair of headphones.

In an image forming apparatus which includes: an image bearing member; a transfer member that transfers a toner image formed on the image bearing member to a transfer material; and a cleaning member that is brought into abutment against the image bearing member to remove toner remaining on the image bearing member after the toner image is transferred onto the transfer material, and in which toner prepared by a polymerizing method is used for formation of the toner image, a degree of compaction C of the toner is set to be within a range of 10 to 30%.

The invention discloses a helicopter combined model wind tunnel test device with an independent tail rotor device. The device comprises a fuselage model, a fuselage model balance, a main rotor, a mainrotor driving system, a variable pitch mechanism, a main rotor balance, a torque balance, a tail rotor and a support system. The fuselage model is internally provided with a tail rotor balance, a tail rotor motor and a tail rotor transmission mechanism; a first rigid bottom plate and a base are arranged in the fuselage model, the tail rotor motor and the tail rotor transmission mechanism are connected with the floating end of the tail rotor balance through the base, and the tail rotor is fixedly installed on an output shaft of the tail rotor transmission mechanism and keeps the spatial position of the fuselage model unchanged all the time. The tail rotor motor and the tail rotor transmission mechanism are not in contact with other parts; the support system drives the fuselage model, the main rotor and the tail rotor to change positions and postures at the same time. By adopting the helicopter combined model wind tunnel test device with the independent tail rotor device, the positionsand the postures of the fuselage model, the main rotor and the tail rotor can be changed simultaneously in the test process.

A mask platform system with a six-degree-of-freedom coarse drive platform is mainly used in a photoetching system. The system comprises the coarse drive platform, a fine drive platform and a rack, wherein the coarse drive platform comprises a coarse drive platform body, a drive device and a coarse drive platform gravity balance component, the coarse drive platform body is arranged at the outer part of the fine drive platform to surround the fine drive platform in the middle, and the drive device comprises two groups of X-direction linear motors distributed symmetrically around the direction of an X-axis and four groups of two-degree-of-freedom linear motors driving a Y-direction and a Z-direction to achieve the six-degree-of-freedom motion of the coarse drive platform. The six-degree-of-freedom coarse drive platform and the six-degree-of-freedom fine drive platform are matched, so that the speed, acceleration and control bandwidth of a mask platform are increased and the requirements of high motion precision and location precision are met while the posture of the mask platform is regulated, and furthermore, the production rate, the alignment precision and the resolution ratio of a photoetching machine are improved.

The invention discloses a novel in-line pump dedicated motor, and the motor comprises a motor base and internal fans. The periphery of a stator iron core is fixedly provided with a plurality of axialthrough cooling tubes on the motor base, and the cooling tubes are communicated with an air outgoing cover disposed at a shaft-extension end of a rotating shaft. A bearing device is installed in a bearing seat, and comprises a bearing bush and an oil slinger, wherein the bearing bush is disposed in the bearing seat. The bearing seat consists of a bearing upper seat and a bearing lower seat. The internal fans are symmetrically disposed on the rotating shaft between the bearing device and a rotor in a fixed manner. The bearing lower seat comprises separator plates which are fixed at left and right sides of the bearing seat body. The separator plates enable the cavity of the bearing seat to be divided into a left oil pool, a central oil pool and a right oil pool, wherein the left, central andright oil pools are communicated. The oil slinger sleeves the periphery of the bearing bush, and is located in the central oil pool of the cavity of the bearing seat. A non-shaft-extension end is provided with an external fan, and is provided with a curved-path fan cover. The motor provided by the invention improves the structure of the bearing seat, improves the self-lubricating effect of a bearing, is additionally provided with the curved-path fan cover, prolongs the propagation path of air, and reduces the noise.

A semiconductor device with a TSV and a shelter is provided. The semiconductor device includes a substrate, a circuit area, at least a TSV and a shelter. The circuit area and the TSV are disposed on the substrate, and the TSV penetrates through the substrate. The shelter is disposed on the substrate and at least one part thereof is between the circuit area and the TSV in order to shelter EMI between the TSV and the circuit area. The novel structure prevents the circuits in the circuit area being affected by noise caused by TSV when TSV acts as a power pin.

A wind turbine (10) comprising at least one turbine (24), a generator (26) configured for converting torque into electrical power, and a controller (40) capable of comparing a wind turbine (10) acoustical profile and a wind turbine (10) power profile to determine a noise reduced operational condition, the controller (40) further being capable of controlling the wind turbine (10) to provide a rotor speed and the pitch angle of the turbine (24) corresponding to the noise reduced operational condition.

A method and system for the distribution of water in a high rise building is provided using a minimum number of piping risers. The system has a domestic cold water riser, and a domestic hot water supply riser and a return riser. At each serviced floor, a cold water supply main extends from the domestic cold water riser and a hot water supply main extends from the domestic hot water supply riser. On each floor at which riser pressure is higher than domestic use pressures, a valve reduces the pressure of the entire cold water supply main to domestic use pressures. One or more valves at each of one or more suites on the floor reduce the pressure of the hot water to each suite, leaving the hot water supply main for the floor at full riser pressure. Coupling fan-coils with chilled water supply and the full pressure domestic hot water provides an efficient piping system for both environmental controls and domestic hot water use. Regular and periodic circulation through fan-coils avoid stagnation of the domestic hot water supply.

The invention provides a balance compensation cable for a high-speed elevator.The balance compensation cable comprises a compensation cable body, and the compensation cable body comprises at least one evenly distributed core and an outer wrapping layer wrapping the cores.The compensation cable body is flat, the cores are steel wire bundles or carbon fiber, and the outer wrapping layer comprises polyoxyethylene resin, plasticizer, stabilizer, a lubricating agent, a flame-retardant agent, accelerant, an adhesive, an anti-aging agent, a reinforcing agent and inorganic filler.The cores and the outer wrapping layer are poured together into a solid integrated element.The wide balance compensation cable for the elevator lowers operation noise, increases specific gravity of unit length, and has the advantage of being large in bearing load.The outer wrapping layer meets the requirements for softness, environment stress cracking resistance and heat resistance, elasticity is good, bending radius is small, and safety performance of the elevator is improved.

The present invention relates to a base design of cooling structure, which includes a base, and a shaft tube disposed on the base to support a spindle of an impeller to rotate therein. The base has at least a groove and the groove is located beyond an outer diameter; the groove design can be employed to effectively prevent the issue of contraction stress caused by difference of cooling time of temperature and to prevent a slanted shaft tube for supporting a stable operation of the spindle of the impeller, thereby avoiding the resulting run-out and noise, making vibration and noise test values of the product comply with a standard value range, reducing the defective rate of the product and prolonging the product lifespan.