57results about How to "Reduce duty" patented technology

In a liquid crystal display device having a backlight, the backlight has a first state which outputs a first amount of light and a second state which generates a second amount of light and the time for the first state and the time for the second state are controlled. Due to such a constitution, the liquid crystal display device can display clear motion picture images in spite of a simple constitution thereof. Further, the liquid crystal display device can display clear and bright motion picture images.

An LED lighting device using a ballast may be provided that includes: an LED unit which includes at least one LED device; a rectifier which rectifies a current power signal output from the ballast; and a current driving unit which receives an output current of the rectifier and controls the power which is transmitted from the ballast to the LED unit. The current driving unit transmits current which has a magnitude greater than that of the output current of the rectifier to the LED unit.

A solid-state imaging device includes: a column comparison circuit which compares a pixel signal with ramp waves and detects a timing at which the pixel signal and the ramp waves match; a counter circuit which is disposed for each of the pixel columns and measures the timing in the column comparison circuit by being supplied with a clock signal; and M first inverters which are equidistantly connected in series, wherein the counter circuit belongs to one of M groups corresponding to each of the M first inverters disposed in the upper clock stage, the odd-numbered group has second inverters disposed between the output terminal of the first inverter corresponding to the group and the counter circuit of the group, and the even-numbered group has buffers disposed between the output terminal of the first inverter corresponding to the group and the counter circuit of the group.

A method for detecting a fault of a rear oxygen sensor installed on an exhaust pipe of a vehicle may include determining whether the rear oxygen sensor satisfies a diagnosis entry condition, comparing an output voltage of the rear oxygen sensor to a preset fault determination voltage range so as to determine whether the output voltage of the rear oxygen sensor is included in the fault determination voltage range, changing the duty of a heater of the rear oxygen sensor when the output voltage of the rear oxygen sensor is not included in the fault determination voltage range, determining whether the output voltage of the rear oxygen sensor, controlled by changing the heater duty, is included in the fault determination voltage range, and confirming that the rear oxygen sensor has a fault, when the output voltage of the rear oxygen sensor is included in the fault determination voltage range.

Processing schemes and arrangements are provided for obtaining ethylene and ethane via the catalytic cracking of a heavy hydrocarbon feedstock and converting the ethylene into ethyl benzene without separating the ethane from the feed stream. The disclosed processing schemes and arrangements advantageously eliminate any separation of ethylene from ethane produced by a FCC process prior to using the combined ethylene/ethane stream as a feed for an ethyl benzene process. Further, heat from the alkylation reactor is used for one of the strippers of the FCC process and at least one bottoms stream from alkylation process is used as an absorption solvent in the FCC process.

The invention discloses an inland river dual fuel power-driven vessel security control system, and the system comprises a main control cabinet, a separate display control panel, six combustible gas detectors, an audible-visual alarm, a general alarm system and a secondary security system. When any one of the six combustible gas detectors detects that the combustible gas concentration is higher than 30% LEL, a PLC controller separately transmits an instruction to a master-control panel, the separate display control panel and the audible-visual alarm, the master-control panel and the separate display control panel display a combustible gas danger signal and a danger source place, and a light alarm transmits an alarm signal; if no staff removes the danger and resets at that time, a vessel general alarm system is triggered after the time delay; when any one of the six combustible gas detectors detects that the combustible gas concentration sequentially increases and is higher than 45% LEL, the audible-visual alarm and the secondary security system are triggered at the same time, an air tank air supply main valve is cut, then the dual fuel mode of the dual fuel supply converts to a diesel oil mode.

A method for the rapid continuous mashing and cooking of grains, legume pulses, corn kernels, seeds or the like, as a stage in the production of a food product, said method including the steps of: introducing said grains, legume pulses, corn kernels or the like into a continuous throughput high-shear mixing/cooking device in which said materials are heated at a pressure of up to 40 Bar and to a temperature of between 100° C. and 200° C. and are then expelled from said device and cooled to a target temperature for storage or further processing.

The invention discloses a method for dynamic management of WIMAX communication resource, which is used for a communication resource management system comprising an operation maintenace center end and net element end. The method comprises: a resource allocation information acquiring step is used for reading the communication system resource allocation information from an allocation data base of the operation maintenace center end; a resource allocation information converting step is used for converting the resource allocation information through the operation maintenace center end to generate a resource management interface; an operation management step is used for dynamic management of communication resource through the remote communication between the operation maintenace center end and the base station of the net element end. The invention also provides a device which applies the method and a communication resource management system which applies the method and the device, gets the effect of remote centralized management for all resources, saves cost of traders and improves resource management capacity.

In aspects of the invention, there is provided an igniting semiconductor device that can prevent burning of an IGBT or ignition coil, and erroneous ignition, even when reducing the size of a capacitor that generates a self-interrupting circuit time constant. In some aspects, a semiconductor device of the invention is configured of an IGBT and a current control circuit. The current control circuit can be configured of a first series circuit wherein an IGBT and a sense resistor are connected in series, a drive signal control circuit, and a self-interrupting circuit. At a time of abnormal operation, the self-interrupting circuit can output a voltage whose amplitude temporally drops in stages toward 0V to the drive signal control circuit. The drive signal control circuit can control the amplitude of a drive control signal so that the voltage across the sense resistor is equivalent to the output voltage of the self-interrupting circuit.

An electrical machine is controlled without using a physical rotor position detector. When the demanded torque output is low, a control method causes the machine to operate on fewer than all the phases, thus increasing the phase current and improving the resolution of the position detection algorithm. The method can include sampling the phase current of the machine, determining whether the phase current is above a predetermined threshold, reducing the number of active phases, and then deriving the value of rotor position from the increased phase current in the remaining phases.

The invention relates to a liquid remote quantitative loading system. The system comprises an upper support, a remote alignment system, an automatic loading crane pipe, a control box and a metering system, wherein the automatic loading crane pipe, the control box and the metering system are installed on the upper support. A feeler lever touches a tank opening of an oil storage tank, the control box controls a vertical pipe to extend into the tank opening of the oil storage tank and stop moving after an inlet distance is reached, the control box controls an oil pump to start for oil loading, aprotective shell floats along with the liquid level, and when the inner bottom wall of the protective shell triggers a float switch, the control box controls the oil pump to stop. According to the system, the vertical pipe can be quickly aligned with the tank opening of a tank truck, and a float liquid level meter is designed for automatic control over start and stop of the oil pump and liquid level measurement of the tank truck, so that a flow meter or manual control can be replaced, control over start and stop of the oil pump can be achieved, and quantitative control is more accurate. The system can realize on-site unmanned liquid filling and accurate metering, can improve the oil loading operation efficiency, and achieves the purposes of safety, energy conservation and yield increase.

The invention discloses a network service program monitoring method. The method includes remote system control which is technology of remotely controlling another computer by a computer in a network;remote system control generally refers to controlling a far-end computer through a network, and remote control refers to remote control in a local area network in most cases; when an operator uses a main-control-end computer to control a controlled-end computer, it is like sitting in front of the controlled-end computer; application programs of the controlled-end computer can be started, file dataof the controlled-end computer can be used or stolen, printing and access to the Internet can be realized by utilizing outside printing equipment and communication equipment of the controlled-end computer, it is like utilizing a remote controller to remotely control volume, channel changing or switching on and off of a TV, and the main-control-end computer only needs to transmit instructions of akeyboard and a mouse to a remote computer.

Apparatus and method for producing a regular film of foodstuff, comprising a first roll on to which foodstuff is applied in fluid or plastic form, and an independent second roll spaced from the first by a distance t₁ on to which a film of foodstuff of thickness t₁ is applied by means of the first roll. Also apparatus and method for producing a layered foodstuff produce additionally comprising a doctor blade on the second roll and a rotary former including a number of cavities in which the foodstuff is collected.

The invention discloses an unattended dynamic frequency sediment sampling device which comprises a sampler, the sampler comprises a cylindrical body, a conductivity sensor is arranged outside the cylindrical body, a main control board is arranged in the middle of the cylindrical body, and a sediment collecting device is arranged on the periphery of the main control board; a main control chip, a sensor communication acquisition circuit and a WIFI module are embedded in the main control board, the sediment acquisition device comprises a group of sampling bottles, the bottom of each sampling bottle is provided with a three-jaw petal, and the three-jaw petals are opened and closed through traction of a motor to achieve the purpose of sediment acquisition. According to the real-time process of the conductivity of the overlying water body of the monitored river and lake sediments, the time-mean value of the conductivity in a certain time period can be measured and calculated, and the density of the sampling frequency of the river and lake sediments is automatically optimized and adjusted by taking the time-mean value and the time-varying behavior of the time-mean value as criteria, so that the sampling accuracy of the river and lake sediments is improved. The river and lake overlying water pollutant concentration change is small, sampling is little, most pollutant concentration change is sampled, the function of river and lake bottom mud sample collection and accurate matching of the overlying water quality change process is achieved, and the device has the advantages of being automatic in operation, high in efficiency and low in cost.

Distribution apparatuses include databases for storing data received from ECUs, and further include receiving buffers and sending buffers. The distribution apparatus continuously performs, in parallel, an operation for storing received data on the receiving buffer, operation for synchronizing contents of the database with the databases, and an operation for sending data from the sending buffer. Further, the distribution apparatus periodically copies data of the receiving buffer onto the database and data of the database onto the sending buffer.

A motor-driven integrated circuit comprises a PWM output unit and an overcurrent comparator coupled with the PWM output unit. The overcurrent comparator receives a detection signal and compares the detection signal with a reference value. When the detection signal is larger than the reference value, the overcurrent comparator outputs an overcurrent protection signal to control the PWM output unit enter an overcurrent protection mode.