369results about How to "Reduce operating power" patented technology

A system for efficiently filtering interfering signals in a front end of a GPS receiver is disclosed. Such interfering signals can emanate from friendly, as well as unfriendly, sources. One embodiment includes a GPS receiver with a space-time adaptive processing (STAP) filter. At least a portion of the interfering signals are removed by applying weights to the inputs. One embodiment adaptively calculates and applies the weights by Fourier Transform convolution and Fourier Transform correlation. The Fourier Transform can be computed via a Fast Fourier Transform (FFT). This approach advantageously reduces computational complexity to practical levels. Another embodiment utilizes redundancy in the covariance matrix to further reduce computational complexity. In another embodiment, an improved FFT and an improved Inverse FFT further reduce computational complexity and improve speed. Advantageously, embodiments can efficiently null a relatively large number of jammers at a relatively low cost and with relatively low operating power.

A piezoelectric micromachined ultrasonic transducer comprising a substrate and a first dielectric film formed on the substrate. An opening having a sidewall is formed through the substrate and first dielectric film. A bottom electrode is formed on the first dielectric film spanning the opening. A piezoelectric element is formed on the bottom electrode. A second dielectric film surrounds the piezoelectric element. A conformal insulating film is formed on the sidewall of the opening. A conformal conductive film is formed in contact with the bottom electrode and on the sidewall of the opening, wherein an open cavity is maintained in the opening. A top electrode is formed in contact with the piezoelectric element.

Provided is a surgical instrument, including: a shaft; a wrist member including a guide member, a wrist body connected to the guide member and formed with a plurality of installation holes, and a plurality of protruding members each disposed to face the wrist body and having an insertion groove, and connected to the shaft; a plurality of effectors each connected to the wrist member by a pin; a support driving unit having first through fourth rotation members inserted into pins that are mounted on the wrist member, respectively, and each first and second wires connected to the plurality of effectors and the first through fourth rotation members, respectively; a main driving unit connected to the support driving unit by wire and having at least one driving unit. The main driving unit enables the entire wrist member to perform a yaw motion by rotating the entire wrist member, and enables the plurality of effectors to perform a pitch motion by simultaneously rotating the plurality of effectors into a single direction, and enables the plurality of effectors to perform a forceps motion of rotating into a direction increasing or decreasing a distance between the plurality of effectors.

A system and a method of operating imaging sensors in a lower power manner. In one illustrative embodiment, an image sensor system includes a sensor controller coupled to a sensor array. The sensor controller may have a higher power state that is active when reading the sensor array and a lower power state that is active between read operations. The sensor controller may read the sensor array at a reduced frame rate until movement or activity is detected in the scene, and then the sensor controller may read the sensor array at an increased frame rate for higher frame resolution. In some cases, less than all of the pixels in the sensor array may be read at some times to reduce power consumption, and more or all of the pixels may be read at other times to provide higher resolution.

An in-line magnetic flow meter has an electrically insulated quasi-annular voltage sensing path defined between an internal wall of a meter body and an outer wall of an axially disposed hollow tube. Although less than 100% of the fluid flow passes through the sensing region, the choice of an inner tube reduces flow impedance introduced by the meter, when compared to other meters providing a quasi-annular sensing path. In addition, by forming two electromagnet coils on a single core and using axially separated pairs of electrodes, the present arrangement allows one to provide two flow meters in the space normally occupied by one.

The invention discloses a projector, comprising a wind scooper, a color wheel, a motor of color wheel, a light pipe and a first air inlet. The color wheel is set in the wind scooper. The motor of color wheel is connected with the color wheel and in the wind scooper. The light pipe is in the wind scooper and corresponds with the color wheel. The first air flow enters into the wind scooper from the first air inlet and passes through the motor of the color wheel and light pipe and flows out the wind scooper.

The invention provides a user comfort-based energy-saving control method in a refrigerating mode of an air conditioner. Through monitoring of indoor and outdoor temperature and based on the temperature difference between indoor temperature and set temperature of an energy-saving control mode, the method can control the operation frequency of an inverter compressor, the opening degree of an electronic expansion valve and the wind speed of indoor and outdoor fans more accurately, so that the operation power of a whole air conditioner can be reduced as much as possible on the premise that the user comfort is guaranteed.

An object of the present invention is to improve the performance of a semiconductor device having a CMISFET. Each of an n channel MISFET and a p channel MISFET which form the CMISFET includes a gate insulating film composed of a silicon oxynitride film and a gate electrode including a silicon film positioned on the gate insulating film. Metal elements such as Hf are introduced near the interface between the gate electrode and the gate insulating film with a surface density of 1×10¹³ to 5×10¹⁴ atoms/cm². The impurity concentration of channel regions of the n channel MISFET and the p channel MISFET is controlled to be equal to or lower than 1.2×10¹⁸/cm³.

Low power carbon nanotube memory is realized such that a first dynamic circuit serves as a local sense amp for reading a memory cell through a lightly loaded local bit line, a second dynamic circuit serves as a segment sense amp for reading the local sense amp, a first tri-state inverter serves as an inverting amplifier of a global sense amp, and a second tri-state inverter serves as a bypass circuit for bypassing output from previous memory block. When reading, a voltage difference in the local bit line is converted to a time difference for differentiating high data and low data by the sense amps for realizing low power with dynamic operation. In particular, amplify transistor of the sense amps is composed of relatively long channel transistor for reducing turn-off current. And buffered data path is used for achieving fast data transfer. Additionally, alternative circuits and memory cell structures are described.

This invention relates to a base station supply management device and a method for a mobile communication system, which installs supply switches in the functional modules and automatically controller by a base station control unit, which can monitor the supply of the main power and residual capacitance parameters of stand-by batteries and sends out control orders to turn off related modules according to the supply management algorithm. This invented device and method can prolong the working time of the base station stand-by batteries when fault happens to the main power to secure the receive and forward service of data streams of the ATM interface not influencing accessing RNV of the successive base stations in the way of chain networking and other cascade networking.

When in the 1 operation the temperature inside is maintained at target temperature by an evaporator, the cooling power of the evaporator is increased so as to carry out the 2 operation for temperature inside lowering. When in the 2 operation the temperature inside reaches lower limit temperature (Tmin), the compressor stops so as to carry out the 3 operation. When in the 3 operation the temperature inside reaches upper limit temperature (Tmax), the compressor restarts so as to carry out the 1 operation.

The invention discloses a large highway tunnel wind turbine group efficiency optimization control system. The system comprises a vehicle detector, a CO detector, a VI detector and a wind speed and direction detector, wherein the vehicle detector, the CO detector, the VI detector and the wind speed and direction detector are arranged in a tunnel, an axial flow exhaust fan, an axial flow blower anda jet fan are arranged inside the tunnel ventilation vertical shaft, the jet fan is suspended on a vault of the tunnel, wherein each axial flow fan is provided with a universal frequency converter, each axial flow fan and the jet fan are provided with a programmable controller, one programmable controller is used as a main station, the other programmable controller serves as a slave station, and the master station and the slave station are connected through a communication line; the main station transmits the data detected by the vehicle detector, the CO detector, the VI detector and the windspeed and direction detector to a computer main control system of the tunnel monitoring center through ethernet, the main control system is provided with software for calculating the air volume and the lift pressure of the tunnel and the axial flow fan and the jet flow fan group efficiency optimization control program.

A method and a highway addressable remote transducer (HART) soft modem device for modulating and demodulating one or more analog signals with HART messages are provided. A phase coherent frequency shift keying (FSK) modulator modulates and transmits the analog signals, and a phase coherent FSK demodulator receives and demodulates the analog signals. The FSK modulator outputs 1 or 0 for transmission. With oversampling and low pass filtering, digital modulation performed by the FSK modulator results in low jitter and a good signal to noise ratio. The FSK demodulator applies a fast energy detect algorithm and dynamically reduces or increases a clock speed of a central processing unit (CPU) of the HART soft modem device for reducing power consumption of the CPU. Furthermore, the HART soft modem device uses direct memory access and runs multiple instances of a HART soft modem integrated within a microcontroller to reduce an overall power consumption.

When during a first action of a refrigeration system the internal cold storage temperature is held at a desired temperature by an evaporator, the refrigeration system performs a second action of increasing the cooling capacity of the evaporator to decrease the internal cold storage temperature. When during the second action the internal cold storage temperature reaches a minimum temperature Tmin, the refrigeration system stops a compressor and performs a third action. When during the third action the internal cold storage temperature reaches a maximum temperature Tmin, the refrigeration system drives the compressor and performs the first action.

A refrigerant circuit (20) includes a low stage compressor (101, 102, 121, 122), a high stage compressor (41, 42, 43), an outdoor heat exchanger (44) and a utilization side heat exchanger (83, 93). During a defrosting operation of the refrigeration system (10), the high stage compressor (41, 42, 43) is driven. Refrigerant discharged from the high stage compressor (41, 42, 43) is pumped into the utilization side heat exchanger (83, 93) to heat frost on it from its inside. Thereafter, the refrigerant evaporates in the outdoor heat exchanger (44), is then compressed by the high stage compressor (41, 42, 43) and is sent again to the utilization side heat exchanger (83, 93).

The invention discloses an air humidifier with a purification function. The air humidifier comprises a shell body, wherein a water tank is arranged at the lower part in the shell body, and an evaporator part and a water distribution structure are further arranged in the shell; the evaporator part is located above the water tank, and the lowest position of the evaporator part is higher than a highest liquid level in the water tank; and a fan assembly is arranged at the upper end of the shell body, an air inlet is formed in the side wall of the shell body, an air outlet is formed in the upper part of the shell body, and the air outlet is arranged above the fan blades of the fan assembly. The air humidifier aims to solve the problems that the humidification rate in a unit volume is not high and the humidification effect is not easy to control in an existing humidifier.