56results about How to "Simple control signal" patented technology

Apparatus for providing an analog drive transistor control signal to the gate electrode of a drive transistor in a drive circuit that applies current to an EL device, the drive circuit including a first supply electrode of the drive transistor and the EL device connected to a second supply electrode of the drive transistor, comprising a measuring circuit for measuring the current passing through the supply electrodes at different times to provide an aging signal representing variations in the characteristics of the drive transistor and EL device caused by operation of the drive transistor and EL device over time; a compensator for changing a linear code value in response to the aging signal to compensate for the variations in the characteristics of the drive transistor and EL device; and a linear source driver for producing the analog drive transistor control signal in response to the changed linear code value.

An electroluminescent (EL) panel with 2T1C subpixels is compensated for initial nonuniformity (“mura”). The current of each subpixel is measured at a selected time to provide a status signal representing the characteristics of the subpixel. A compensator receives a linear code value and changes it according to the status signals. A linear source driver drives the panel with the changed code values.

An electronic circuit including a bipolar switching memory device including first and second electrodes at terminals of which a programming voltage can be applied, the circuit including: a first mechanism applying, to the first electrode, a data signal having, during a time period d, a constant state 0 or 1; a second mechanism applying, to the second electrode, a control signal that alternates, during time period d, between state 1 and state 0, the control signal being same regardless of the state in which the memory device is programmed; a selection device allowing a current to flow into the memory device during a programming time included in time period d; and a change of state of the control signal taking place during the programming time.

Subpixels on an electroluminescent (EL) display panel, such as an organic light-emitting diode (OLED) panel, are compensated for initial nonuniformity (“mura”) and for aging effects such as threshold voltage Vth shift, EL voltage Voled shift, and OLED efficiency loss. The drive current of each subpixel is measured at one or more measurement reference gate voltages to form status signals representing the characteristics of the drive transistor and EL emitter of those subpixels. Current measurements are taken in the linear region of drive transistor operation to improve signal-to-noise ratio in systems such as modern LTPS PMOS OLED displays, which have relatively small Voled shift over their lifetimes and thus relatively small current change due to channel-length modulation. Various sources of noise are also suppressed to further increase signal-to-noise ratio.

A non-volatile memory device with a page buffer having dual registers includes a memory cell array, a selector circuit and a page buffer circuit, the selector circuit being coupled to an exterior data line, the page buffer circuit including a first register and a second register being coupled between the memory cell array and the selector circuit, and the first register and second register being commonly coupled through a sense node. The first and second registers alternately write data to the memory cell array for programming. As one of the first and second registers performs programming, the other register stores data from the data line concurrently. In other words, the second register stores data from the data line when the first register is in programming, whereas the first register stores data from the data line when the second register is in programming.

The invention belongs to the technical field of digital microfluidics and in particular relates to a two-dimensional digital micro-fluidic chip based on one-way liquid drop transport. According to the chip, a single-plane chessboard-shaped liquid drop control unit is formed due to the moon-shaped one-way liquid drop transport electrode, reasonable electrode arrangement and simple control signal configuration, and M*N control units (N can be infinitely great) can be controlled by using 2*M control signals, so that two-dimensional liquid drop drive is realized. The provided digital micro-fluidic chip has the advantages of novel and simple control mode, simple manufacturing process, high driving capacity, high batch processing degree, high throughput operation and the like, the defects of the traditional digital micro-fluidic chip are overcome, and the application functions and application range of the digital micro-fluidic chip are greatly widened.

An impulse driving method and apparatus thereof for a liquid crystal display (LCD) are provided. The gate driver of the liquid crystal device generates first scan signals for controlling gate lines of the liquid crystal device according to the received first start vertical signal and first output enable signal. The scan signals are generated corresponding to the pixel data signals outputted from the data driver of the LCD. Moreover, the gate driver of the LCD generates second scan signals according to the received second start vertical signal and second output enable signals. The scan signals are generated corresponding to black data signals output from the data driver of the liquid crystal device. Therefore, the control signal scheme is simplified and the black insertion ratio is easily controlled.

The invention discloses a JPEG (joint photographic experts group)_ LS (laser system) general coding hardware implementation method, and is mainly used for solving the problems that the existing JPEG is coded, the parameter update and error value computational structure is complicated, and the treatment rate is slow. The implementation method comprises the following steps of: adopting a four level backfeed loop, updating and feeding back the parameter update value in real time, predicting error values by utilizing first two point error corrected parameter value of the existing pixel point, and simplifying an error value computational process by utilizing a two-step prediction; carrying out next calculation on the prediction result after obtaining a prediction result in the first step, rationally arranging data processing quantity of each level, and updating and simultaneously carrying out error prediction to finally obtain a Columbus parameter so as to carry out Columbus coding, and outputting compressed code current. The implementation method provided by the invention has the advantages of rapid processing speed, less occupation resource, is simple and easy to operate, and is easy to realize FPGA (Field Programmable Gata Array).

The invention discloses a display device, a pixel circuit thereof and a driving method thereof. The pixel circuit provided by the invention comprises a first transistor, a second transistor, a third transistor, a fourth transistor, a fifth transistor and a capacitor element. The first transistor is used for providing a driving current to a light emitting device. The second transistor, the third transistor, the fourth transistor and the fifth transistor serve as switch tubes and are used for responding to scanning signals. The capacitor element is used for storing voltage information and coupling the voltage information to a control electrode of the first transistor so as to enable the first transistor to generate a drain current for driving the light emitting device. The pixel circuit is capable of preventing the problem of the switch tubes that light illumination brightness is uneven due to charge leakage under a switched-off state and is capable of compensating the change or uneven phenomenon of a first threshold voltage for driving the transistors; in addition, under the condition that the storage capacitance is very small, the compensation voltage in one frame is maintained by a negative feedback structure, the distortion of the voltage is reduced, and the uniform degree of brightness is improved. By adopting the pixel circuit provided by the invention, a display high in resolution can be manufactured.

An electroluminescent (EL) subpixel, such as an organic light-emitting diode (OLED) subpixel, is compensated for aging effects such as threshold voltage Vth shift, EL voltage Voled shift, and OLED efficiency loss. The drive current of the subpixel is measured at one or more measurement reference gate voltages to form a status signal representing the characteristics of the drive transistor and EL emitter of the subpixel. Current measurements are taken in the linear region of drive transistor operation to improve signal-to-noise ratio in systems such as modern LTPS PMOS OLED displays, which have relatively small Voled shift over their lifetimes and thus relatively small current change due to channel-length modulation. Various sources of noise are also suppressed to further increase signal-to-noise ratio.

A non-volatile memory device with a page buffer having dual registers includes a memory cell array, a selector circuit and a page buffer circuit, the selector circuit being coupled to an exterior data line, the page buffer circuit including a first register and a second register being coupled between the memory cell array and the selector circuit, and the first register and second register being commonly coupled through a sense node. The first and second registers alternately write data to the memory cell array for programming. As one of the first and second registers performs programming, the other register stores data from the data line concurrently. In other words, the second register stores data from the data line when the first register is in programming, whereas the first register stores data from the data line when the second register is in programming.

The invention discloses a nonvolatile memory with the page buffer provided with two resisters, and the memory comprises a memory unit matrix, a selector circuit and a page buffer circuit. The selector circuit is coupled with an outer data bus, the page buffer circuit comprising a first resister and a second resister is coupled between the memory unit matrix and the selector circuit, and the first and the second registers are coupled together via a sensing node. The first and the second registers alternately write the data into the memory unit matrix through programming. When programmed write is carried out for one of the first and the second resisters, the other register is used for storing the data from the data bus at the same time. In other words, when programmed write is being carried out by the first resister, the second memory is used for storing the data from the data bus, and when programmed write is being carried out by the second resister, the first memory is used for storing the data from the data bus.

The invention provides a drive and control circuit for a fast solenoid valve. The drive and control circuit has the advantages that accuracy and stability are high, and control signals are simple. The drive and control circuit adjusts the intensity or the duration time of a strong shock current and a holding current according to the inherent characteristic of the solenoid valve and mainly comprises an output circuit and a feedback circuit. Two general timers are arranged for control over the strong shock current and the holding current respectively in the output circuit, an output signal OUT1 and an output signal OUT2 can be generated, when any signal is a high-level signal, a transistor V1 or V2 is switched on, then V3 is switched on through an MOSFET, PWM-OUT+ outputs +28V, and the solenoid valve is driven to work. The feedback circuit mainly comprises a difference operational amplifying circuit and a bleeder circuit, and the negative end PWM-OUT- of the solenoid valve is connected into a sampling resistor in the feedback circuit.

A multifunctional laser therapy apparatus relates to a multifunctional laser therapy device, which utilizes neodymium crystal with multi-passage transition property, and partially separates resonant cavity optical paths of laser with 1micron and 1.3 microns wavelengths. The multifunctional laser therapy device is characterized in that a 1 micron acousto-optic Q-switch is arranged in the 1 micron resonant cavity optical path, a 1.3 microns acousto-optic Q-switch is arranged in a common resonant cavity optical path of the optical paths with two wavelengths to control the laser with two wavelengths, switching on and off of the acousto-optic Q-switch is controlled by an extra signal generator, thereby achieving functions of optical switching and Q- adjusting, realizing six types of different output including two types of single wavelength continuous laser, two types of single wavelength Q-adjusting laser, double-wavelength quasi-continuous laser and double wavelength Q-adjusting laser, then one laser therapy apparatus device can output six types of output, thereby greatly widening application scope of the laser therapy apparatus device, and further, only one laser bar and one set of pump and cooling system are utilized, thereby saving cost.

A light scanning device and a method thereof are provided. The device is under control of a controller for controlling an image-forming apparatus and includes a second S&H signal generator, light output part, and a light output controller. The second S&H signal generator generates a plurality of second S&H signals, each consisting of a sampling interval and a holding interval and generated using a first S&H signal provided from the controller. The light output part outputs a plurality of lights and the light output controller controls the light output part to generate the plurality of lights for the respective sampling intervals of the plurality of second S&H signals and sets a control signal value controlling intensities of lights to be maintained for the holding intervals of the plurality of second S&H signals on the basis of the intensities of the generated light. Accordingly, standardization of an interface between parts is simplified.

An assembly for an LSI test supplies a test signal output from an LSI tester to a target LSI to be tested and outputs, to the LSI tester, a test result signal generated by processing of the target LSI performed in accordance with the test signal. The assembly for an LSI test includes: a peripheral circuit coupled to the target LSI and allowing the target LSI to operate in the same manner as in the application environment; and a printed circuit board on which the peripheral circuit is mounted.

The invention discloses an engine fuel oil supply system and a fuel oil supply control method. The engine fuel oil supply system is used for controlling fuel oil supply of an engine and comprises a fuel oil pump and a power unit for driving the fuel oil pump; the oil inlet of the fuel oil pump is connected with a fuel tank; the oil outlet of the fuel oil pump is connected with a combustion chamberof the engine; the power unit is in communication connection with an electronic controller of the engine; a fuel oil metering device for controlling the metering fuel oil entering the combustion chamber is arranged on a pipeline through which the oil outlet of the fuel oil pump is connected with the combustion chamber of the engine; and the fuel oil metering device comprises a high-speed controlvalve for realizing continuous supply or cutoff of the fuel oil as well as a pressure pulsation absorber for enabling the fuel oil to be continuous and stable. The high-speed control valve is in electric signal connection with the electronic controller; the oil inlet of the high-speed control valve is connected with the fuel oil pump; and the oil outlet of the high-speed control valve is connectedwith the pressure pulsation absorber. The oil outlet of the pressure pulsation absorber is connected with the combustion chamber of the engine.

The invention discloses a display device and a pixel circuit thereof, and a driving method. The pixel circuit of the invention includes a driving transistor, second to fifth transistors and a second capacitor. The driving transistor is used for providing a driving current for a light emitting device. The second to fifth transistors are used as switching tubes, and are used for responding to scanning signals, data signals and light emitting control signals. The second capacitor is used for storing sampling voltages. Compensation is made for the threshold voltage of the driving transistor in order to reduce the influence of non-uniform mobility of the transistors and improve the contrast of the display device. The display device supports a progressive light emission mode and a simultaneous light emission mode, and can be applied in a high-resolution or high-frame-frequency display device.

The invention discloses a single inductor bridgeless APFC circuit based on an IGBT module, and the circuit comprises an AC filter capacitor C1, a first IGBT module S1, a second IGBT module S2, an inductor L, a first power diode D1, a second power diode D2, a third power diode D3, a fourth power diode D4, a DC filter capacitor E1, a first divider resistor R1 and a second divider resistor R2; the anode of the first power diode D1, the first end portion of the AC filter capacitor C1 and a collector electrode of the first IGBT module S1 are connected with a power supply fire wire; the anode of the fourth power diode D4, the second end portion of the AC filter capacitor C1 and the collector of the second IGBT module S2 are connected with a power supply zero line; the emitting electrode of the first IGBT module S1, the first end portion of the inductor L and the cathode of the second power diode D2 are connected; and the emitting electrode of the second IGBT module S2, the second end portion of the inductor L and the cathode of the third power diode D3 are connected.

A method and an apparatus to control a high voltage output in an image forming system. The method includes setting a master processor to control an engine, and setting a slave processor to control a high voltage output; transmitting a command, which includes a timing and a level of the high voltage output, from the master processor to the slave processor; and determining the timing and level of the high voltage output after analyzing the received command, and controlling the high voltage output according to a predetermined high voltage output synchronization signal by the slave processor.

The data communication process between computing nucleus and external interface includes the following steps: 1. for the computing nucleus to set í‹input requestíŒ signal as valid when it allows and needs data input; 2. for the peripheral receiving the í‹input requestíŒ to respond the í‹input requestíŒ, set í‹input request response signalíŒ as valid and set the data on the í‹input data signalíŒ line; 3. for the computing nucleus to set data on í‹output dataíŒ end and set í‹output requestíŒ signal as valid when it allows and needs data output; 4. for the peripheral receiving the í‹output requestíŒ to respond the í‹output requestíŒ and set í‹output request response signalíŒ as valid; and 5. for the computing nucleus to set í‹busy processingíŒ signal as valid when it is busy in processing input data and there are new data to be input. The present invention has fast calculation speed, simple control, control based on the calculation completing condition, simplified relevant control and other advantages.

A method and an apparatus to control a high voltage output in an image forming system. The method includes setting a master processor to control an engine, and setting a slave processor to control a high voltage output; transmitting a command, which includes a timing and a level of the high voltage output, from the master processor to the slave processor; and determining the timing and level of the high voltage output after analyzing the received command, and controlling the high voltage output according to a predetermined high voltage output synchronization signal by the slave processor.

The invention discloses a circuit for driving a high-power ultrasonic transducer by one square wave. At present, the power of an ultrasonic transducer in the domestic industry becomes higher and higher, so that the output power of an ultrasonic power supply is required to meet a requirement on the power of the transducer and is required to match the power of the transducer; under normal circumstances, a control circuit of an ultrasonic generating power supply is very complex in design and has relatively high requirements on the program and the performance of a singlechip. The circuit for driving the high-power ultrasonic transducer by one square wave comprises a pulse square wave voltage source VPULSE, an inverter, eight resistors, four transistors, four diodes, two transformers, two insulated gate bipolar transistors, four capacitors and a transducer. The components used by the circuit disclosed by the invention are mature, reliable, low in cost and rich in sources; a single-way square wave signal and a control signal can be input simply; a bridge current circuit is high in stability; the transformer ratio of a driving transformer is large; the rated current of the IGBT (insulated gate bipolar translator) is high; high-power ultrasonic signal output can be achieved.

The invention discloses a separating mechanism of a guided fire extinguishing bomb. The mechanism comprises a bomb body, a tail part and a separating mechanism body, the separating mechanism body is arranged to be a double-layer structure which is divided into an upper layer cylindrical structure and a lower layer cylindrical structure, the upper layer cylindrical structure and the lower layer cylindrical structure are installed in a buckling manner, and the upper layer cylindrical structure is installed at the lower part of the bomb body in a threaded manner. The lower layer cylindrical structure is installed on the upper part of the tail in a threaded mode. The separating structure is used for separating the bomb body and the tail part of the fire extinguishing bomb to achieve the effect of rapidly throwing a fire extinguishing agent, the separating mechanism body is composed of a steering engine disc, a connecting rod, a crank and a buckle, the buckle is fixed to the steering engine disc through the connecting rod and the crank to be used for controlling the buckle to contract and expand, and threads are designed at the upper end and the lower end of the separating mechanism body. The mechanism is simple to control, the effect time is short, and the whole process is very efficient and fast. Due to the fact that no flammable and explosive object is used for separating kinetic energy, the whole separation process is very safe, and no potential safety hazard is generated in the storage and transportation process.

A light scanning device and a method thereof are provided. The device is under control of a controller for controlling an image-forming apparatus and includes a second S&H signal generator, light output part, and a light output controller. The second S&H signal generator generates a plurality of second S&H signals, each consisting of a sampling interval and a holding interval and generated using a first S&H signal provided from the controller. The light output part outputs a plurality of lights and the light output controller controls the light output part to generate the plurality of lights for the respective sampling intervals of the plurality of second S&H signals and sets a control signal value controlling intensities of lights to be maintained for the holding intervals of the plurality of second S&H signals on the basis of the intensities of the generated light. Accordingly, standardization of an interface between parts is simplified.

An active antenna system with multiple feed ports and a control method of the active antenna system are provided. The active antenna system includes an antenna radiation element, a first feed port and a second feed port. If the first control circuit is in a close state, the first feed port and a first physical position of the antenna radiation element are connected with each other, so that a signal is fed to the antenna radiation element through the first feed port and the first physical position. If the second control circuit is in the close state, the second feed port and a second physical position of the antenna radiation element are connected with each other, so that the signal is fed to the antenna radiation element through the second feed port and the second physical position.

A circuit arrangement and associated method for reducing crosstalk are disclosed. A load impedance is connected via a controlled current source to an input connection for supplying a supply voltage (Vin) in the circuit arrangement. The current source is actuated using a control means such that the current source outputs a current which corresponds to the average current drawn by the load impedance. In this manner, merely a small voltage drop occurs on the supply voltage while radio-frequency interference is concurrently mitigated.

An assembly for an LSI test supplies a test signal output from an LSI tester to a target LSI to be tested and outputs, to the LSI tester, a test result signal generated by processing of the target LSI performed in accordance with the test signal. The assembly for an LSI test includes: a peripheral circuit coupled to the target LSI and allowing the target LSI to operate in the same manner as in the application environment; and a printed circuit board on which the peripheral circuit is mounted.