128results about How to "High power saving efficiency" patented technology

Provided is a data transceiving method performed by a station (STA) in a wireless LAN system. The method comprises: receiving subgrouping parameter information from an access point (AP); determining whether a frame buffered in the STA subgroup in which the STA is contained exists or not based on the subgrouping parameter information; receiving a TIM element in a channel access interval for the STA subgroup from the AP if the buffered frame exists; and exchanging the AP and the frame in the channel access interval based on the TIM element.

In a power saving operation management method in a mobile communication system, a base station receives a sleep mode entering request message from a mobile station desiring to enter the sleep mode, determines a sleep period type and a parameter by analyzing a combination of radio channels between the mobile station and the base station, and transmits a sleep mode entering response message including the sleep period type and the parameter.

The invention discloses an illumination system of an intelligent controlled LED tunnel lamp and the application thereof, which comprises a power supply and distribution device, a group of structure including a plurality of LED tunnel lamps that consist of tunnel lamp burners, direct current drive working power and control units. A sensing signal recognition processor added with a temperature sensor is arranged in each control unit of the LED tunnel lamps in the invention; the front end of the sensing signal recognition processor is successively connected with a sensor signal converting processor and a vehicle detecting sensor through a preposed sensing signal transmission channel in a many-to-one way; signals from the temperature sensor and the vehicle detecting sensor are treated uniformly by the sensing signal recognition processor. The invention can recognize whether vehicles comes from the front of the tunnel so as to control whether the LED tunnel lamps are lightened, and the driving current of the LED tunnel lamp caps or the lightened number of the LED tunnel lamps can be adjusted and controlled according to the detected environment temperature in the tunnel without reducing the brightness of the tunnel lamps, thus realizing the power saving and prolonging the working life of the tunnel lamps.

The invention discloses an illuminating system control method adopting an intelligent switch control system. The method is characterized in that the intelligent switch control system comprises a central processing unit, a brightness judgment module, a sound induction module, an infrared induction module, an image induction module, a voice recognition module and a network control module, wherein the brightness judgment module, the sound induction module, the infrared induction module, the image induction module, the voice recognition module and the network control module are connected with the central processing unit. According to the method, multiple recognition and control modes are adopted, the integration degree is high, operability is good, the intelligent level is high, the anti-jamming capability is high, and the power saving efficiency is high.

The invention relates to the technical field of organic chemistry and discloses a boron-containing luminescent material and its preparation method and use. The boron-containing luminescent material solves the problem that the existing luminescent materials in a solid state do not emit fluorescent light. The boron-containing luminescent material has good optical properties and aggregation-induced emission effects and can emit fluorescent light in a solid state. The preparation method has simple processes, adopts easily available raw materials and has a high yield.

A source-driving circuit comprises a plurality of first and second data-outputting units, a first and a second charge-sharing units and a charge-sharing switch circuit. The first and second data-outputting units have corresponding first and second output terminals respectively for outputting data signals with a first polarity and a second polarity. The first and second charge-sharing units comprise a plurality of first and second switches respectively. Each first switch is electrically connected between each two first output terminals and each two second output terminals. Each second switch is electrically connected between one of the first outputting terminals and a corresponding one of the second outputting terminals. A charge-sharing switch circuit is electrically connected to the first and second charge-sharing units for outputting a switch signal to the first and second charge-sharing units according to a polarity signal, so as to determine the on/off statuses of the first and second switches.

The invention provides a high resolution demultiplexer (demux) driver circuit, comprising: a plurality of scan lines connected respectively to sub-pixels of corresponding column, a plurality of data lines connected respectively to sub-pixels of corresponding row, and a plurality of multiplexer (mux) modules; each mux module comprising two thin film transistors, with gates connected respectively to first and second shunt control signals, sources connected to same data signal, and drains connected respectively to data line near the two same color sub-pixel row; controlling the polarity of each data signal to control each sub-pixel row except the first and last rows to display in horizontal direction following the polarity distribution of alternating positive-positive and negative-negative. The invention does not need to change the data signal voltage in a power-saving mode, and achieves high power-saving efficiency. The number of control signals and the frequency controlling control signals are reduced for further power-saving.

The invention discloses a fresh air system and a control method thereof. The fresh air system comprises a refrigerant conveying device, an indoor unit and a controller. The refrigerant conveying device comprises a compressor and a four-way valve. The indoor unit comprises a fresh air inlet, a fresh air outlet, an exhaust air inlet, an exhaust air outlet, a first heat exchanger, an exhaust fan, a throttling device, a second heat exchanger and a forced draught fan, wherein one end of the throttling device is connected with one end of the first heat exchanger, and the other end of the throttlingdevice is connected with one end of the second heat exchanger. The controller controls the exhaust fan, the forced draught fan, the compressor and the four-way valve according to a selected operationmode and set target parameters, outdoor fresh air entering the system from the fresh air inlet flows through the second heat exchanger and the forced draught fan to be fed into a room through the fresh air outlet, and indoor air entering the system from the exhaust air inlet flows through the first heat exchanger and the exhaust fan to be exhausted out of the room through the exhaust air outlet. The fresh air efficiency can be improved, energy consumption is reduced, and the using seasons of the system are extended.

The invention relates to the technical field of display processing, and discloses a power saving method and a power saving system. The power saving method comprises the steps that arrangement analysis is carried out on a display interface by a terminal, and a specific region of the display interface is obtained; color in the specific region is converted into color with lower power dissipation. Compared with the prior art, the color in the specific region is converted into the color with the lower power dissipation, the power dissipation of the terminal is effectively lowered, so that the purpose of power saving is achieved; meanwhile functions of software do not need to be limited in the achieving process, the normal use of the software is not affected, and the experience of a user can be improved.

A problem to be solved is to enable the user to read out data stored in a logical unit in a power saving state in a short time in a storage system having a power saving function such as stopping the spindle of the HDD. To solve the problem, candidate document file information is read out according to the keywords inputted by the user from a search system, a predetermined number of document file names are extracted from the highest candidates in the candidate document file information, and the power saving function of the logical units actually storing the extracted document files is controlled (switch the state from the power saving state to the normal operation state).

The invention relates to an intelligent and accurate air supply system of an air conditioning unit. The intelligent and accurate air supply system comprises an air supply draught fan, an air return draught fan, air valves, an air supply pipeline, an air return pipeline, a fresh air pipeline, a chilled water supply system, a steam supply system, an accurate air supply control box and a sensing unit, wherein the air supply draught fan and the air supply pipeline as well as the air return draught fan and the air return pipeline are connected through the air valves; the fresh air pipeline is connected with the air supply draught fan through a filter; the sensing unit comprises an air volume sensor, a mini-type air pressure sensor, an air supply temperature and humidity complex sensor and an air discharging temperature and humidity complex sensor; the air supply draught fan and the air return draught fan are driven by adopting a variable-frequency and variable-speed motor; the chilled water supply system is provided with a chilled water control valve; the steam supply system is provided with a steam control valve; an intelligent air supply controller and a power supply are arranged in the accurate air supply control box; the intelligent air supply controller is in communication connection with the variable-frequency and variable-speed motor, the chilled water control valve, the steam control valve and the sensing unit.

Provided is a wireless communication method performed at an access point to enhance the transmission efficiency in a wireless local area network (WLAN) system, the method including scheduling a transmission time of an enhanced traffic indicator map (TIM) frame based on a type of a station, and transmitting a second beacon including the enhanced TIM frame to the station at a point in time aside from a transmission point in time of a first beacon.

The invention provides a liquid crystal point reversing drive circuit, comprising a positive signal source, a negative signal source, a first selection unit and a second selection unit, wherein, the positive signal source provides a first positive signal and a second positive signal; the negative signal source provides a first negative signal source and a second negative signal source; the first selection unit is connected with the positive signal source and the negative signal source and used for receiving the first positive signal of the positive signal source and the first negative signal of the negative signal source, and the unit is composed of low-voltage elements; the second selection unit is connected with the positive signal source and the negative signal source and used for receiving the second positive signal of the positive signal source and the second negative signal of the negative signal source, and the unit is composed of low-voltage elements; the first signal source is connected with the first selection unit to alternately output a first positive voltage and a first negative voltage; and the second signal source is connected with the second selection unit to alternately output a second positive voltage and a second negative voltage. The drive circuit forms output of the positive voltage and the negative voltage of two source electrodes by single positive signal source and single negative signal source, thus reducing the usage quantity of a computing amplifier.

A control method is sutiable for a display and is provided with a general mode and a power saving mode. The control method, in the power saving mode, includes the steps of: obtaining a second gray scale data according to a plurality of first gray scale datas, wherein the first gray scale datas are repsectively correpsonding to a plurality of first primary colors, and the second gray scale data is corresponding to a second primary color besides the first primary colors, and generating a plurality of thrid grey scale data according to the first gray scale datas and the second grey scale data, wherein first primary color grey data and second grey scale data are defined in the thrid grey scale data, the first primary color grey data is related to the first primary color and the second primary color grey data is related to the second primary color; and regulating the third grey scale data according to a comparison strengthening function; and finally querying a plurality of driving grey scale datas according to the regualted third grey scale data and driving the display by means of the driving grey scale datas to show an image.

The invention relates to an air compressor energy saving controller. The air compressor energy saving controller comprises an air compressor intelligent controller. The air compressor energy saving controller is characterized in that: the air compressor intelligent controller is connected to a programmable controller of the air compressor energy saving controller; the programmable controller is connected to a wireless data transceiver; the air compressor intelligent controller controls a Y contactor and a delta contactor; the programmable controller controls a frequency converter and is connected to a pressure sensor; the frequency converter is connected to a power frequency converter; and the power frequency converter is connected to a main motor of an air compressor. The beneficial effects of the air compressor energy saving controller are that: a control cabinet of the energy saving controller is provided with a man-machine interaction interface, so that an operation state and a control process of the energy saving controller can be fully displayed, state query and parameter modification are convenient, operation states of air compressors in a whole air compression station can be centrally displayed and controlled by operations, and operation and monitoring of the air compressors are convenient; and the wireless data transceiver is provided and can perform remote communication with an upper computer software, thus facilitating central management and control of air compressor data.

The invention relates to a double-threshold-value type power-saving silencing AC electromagnetic valve which comprises a power-saving unit 100 and a conventional AC electromagnetic valve and is characterized in that the power-saving unit 100 consists of an AC-DC (Alternating Current to Direct Current) converting circuit 101, a switching pulse generating circuit 102, a switching circuit 103, a sustaining voltage step-down circuit 104 and an electric bridge circuit 105, wherein the AC-DC converting circuit 101 is a double-threshold-value type converting circuit.

While a general-purpose interface circuit and another general-purpose interface circuit are provided so as to transmit/receive data between a host appliance and a device appliance, when the general-purpose interface of the device appliance happens to hang up, a control section transmits a reset signal via a dedicated interface circuit. When a dedicated interface circuit provided on the side of the device appliance receives this reset signal and then outputs this received reset signal to the general-purpose interface circuit, the general-purpose interface circuit is reinitiated.