1290 results about "Current generation" patented technology

The invention discloses a short circuit simulation test circuit which is used for testing and examining the operation condition of a converter valve. The short circuit simulation test circuit comprises a capacity charge power supply module, a fault current generation circuit and a converter valve charging source module, wherein the cathode of the capacity charge power supply module is connected with a positive input end of the fault current generation circuit while the anode of the capacity charge power supply module is connected with a negative input end of the fault current generation circuit; a positive input end of the fault current generation circuit is connected with the anode of the converter valve charging source module and a high voltage output end of the converter valve respectively, and the negative output end of the fault current generation circuit is connected with the cathode of the capacity charge power supply module and the low voltage output end of the converter valve respectively. The test circuit can be used for testing and examining the fault operation condition of converter value. The invention further discloses a test method of the short circuit simulation test circuit.

A pixel circuit for active matrix OLED and driving method is proposed in this invention, which includes five transistors and one capacitance, it's mainly use a first-transistor connected to a control line to let a second transistor connected to the former scan line off when writing a low voltage in, so to avoid large current generation and IR-drop, finally the illumination will be more uniform than prior art.

A Virtual Design Module (VDM) used in a networked design environment generates manufactured product designs that are near optimal in terms of cost and production cycle time by using design data files containing alternative parts and manufacturers information. Numerous product design alternatives are considered and evaluated in terms of design-manufacturing-parts-supplier feasibility and real-time information on cost and production cycle time for realization. The VDM generates a population of new designs with appropriate board design information to allow for design-manufacturer-supplier decision making and determines the feasibility of each member of the current generation of designs and rejects designs that are not feasible. The VDM triggers Mobile Software Agents (MSA) that obtain data for parts availability, cost, lead time and manufacturer data for manufacturing availability, cost and lead time for each feasible member of the current generation of designs and return the data. In one application for printed circuit board design, the VDM evaluates each member of the current generation of designs by calculating cost, lead-time and value using a J function. The VDM then improves board designs through selection and use of board design modifiers. The process continues until optimized designs are obtained. Optimized board designs are output as results to an operator.

A high-speed method for maintaining a summary of thread activity reduces the number of remote-memory operations for an n processor, multiple node computer system from n² to (2n−1) operations. The method uses a hierarchical summary of-thread-activity data structure that includes structures such as first and second level bit masks. The first level bit mask is accessible to all nodes and contains a bit per node, the bit indicating whether the corresponding node contains a processor that has not yet passed through a quiescent state. The second level bit mask is local to each node and contains a bit per processor per node, the bit indicating whether the corresponding processor has not yet passed through a quiescent state. The method includes determining from a data structure on the processor's node (such as a second level bitmask) if the processor has passed through a quiescent state. If so, it is then determined from the data structure if all other processors on its node have passed through a quiescent state. If so, it is then indicated in a data structure accessible to all nodes (such as the first level bitmask) that all processors on the processor's node have passed through a quiescent state. The local generation number can also be stored in the data structure accessible to all nodes. If a processor determines from this data structure that the processor is the last processor to pass through a quiescent state, the processor updates the data structure for storing a number of the current generation stored in the memory of each node.

The display matrix section 200 has pixel circuits 210 arranged in the form of a matrix, a plurality of gate lines Y1, Y2 . . . that extend in the row direction, and a plurality of data lines X1, X2 . . . that extend in the column direction. The scan lines are connected to a gate driver 300, and the data lines are connected to a data line driver 400. A pre-charging circuit 600 or additional current generation circuit is installed for each data line as means for accelerating the charging or discharging of the data line. For each data line, charging or discharging is accelerated by pre-charging or current addition prior to the completion of the setting of the light emission level in the corresponding pixel circuit 210.

A bandgap circuit comprising a current generation circuit and a current replication circuit is provided herein. The output current of the current generation circuit is generated as a weighted sum of two currents. The circuit configuration of the current generation circuit allows it to function at low power supply voltages, e.g., on the order of 1 V. The current replication circuit includes an operational amplifier, which when configured in conjunction with MOS cascode current sources and the current generation circuit, significantly increases the accuracy and insensitivity to power supply noise of the bandgap circuit output current. A resistor may be included between the bandgap circuit output node and ground for generating a reference voltage with increased accuracy and insensitivity to power supply noise.

An implantable pulse generator (IPG) is disclosed having an improved ability to steer anodic and cathodic currents between the IPG's electrodes. Each electrode node has at least one PDAC/NDAC pair to source/sink or sink/source a stimulation current to an associated electrode node. Each PDAC and NDAC receives a current with a magnitude indicative of a total anodic and cathodic current, and data indicative of a percentage of that total that each PDAC and NDAC will produce in the patient's tissue at any given time, which activates a number of branches in each PDAC or NDAC. Each PDAC and NDAC may also receive one or more resolution control signals specifying an increment by which the stimulation current may be adjusted at each electrode. The current received by each PDAC and NDAC is generated by a master DAC, and is preferably distributed to the PDACs and NDACs by distribution circuitry.

A transmitter architecture includes an equalizer and a D/A converter, for high-speed transmission of data across a channel. The equalizer includes a two-tap MAC as part of an N-stage, two-way interleaved FIR filter. The two-tap MAC provides substantial power and area savings over conventional MAC-based FIR filter designs, and may be implemented in short or long communications channels. The D/A converter is decoupled from the equalizer. Its N-bit, binary-weighted driver includes matched unit current generation cells, all of which are fully utilized during each digital-to-analog conversion. The D/A converter remains unchanged, even when the characteristics of the equalizer are changed.

A photovoltaic cell or other optoelectronic device having a wide-bandgap semiconductor used in the window layer. This wider bandgap is achieved by using a semiconductor composition that is not lattice-matched to the cell layer directly beneath it and/or to the growth substrate. The wider bandgap of the window layer increases the transmission of short wavelength light into the emitter and base layers of the photovoltaic cell. This in turn increases the current generation in the photovoltaic cell. Additionally, the wider bandgap of the lattice mismatched window layer inhibits minority carrier injection and recombination in the window layer.

The present invention relates to an apparatus capable of diagnosing the aging state of a power conversion system at ordinary times and its diagnosing method to ensure the reliability of a power conversion system. The apparatus includes a current sensing means for detecting the output current of a inverter switching module or an electrolytic capacitor, and measurement and diagnosis means for extracting elements related to the aging status of the power conversion system by receiving the output current waveform of the inverter switching module and magnitude of each harmonic or an impedance voltage signal of the electrolytic capacitor. Furthermore, it is preferable that the apparatus further includes a measurement current generation means for generating measurement current to be supplied to the electrolytic capacitor. By analyzing an average value or the magnitude of harmonics by FFT analysis of the output current waveform of the inverter switching module and measuring an ESR value or a loss angle tan δ of a DC bus of the power conversion system, the present invention is able to monitor and diagnose the abnormal state attributable to the aging or degradation of the power conversion system in advance.

A constant power DC light emitting diode (LED) driving system and method is disclosed. The system comprises a plurality of LED, a DC voltage source for LED current generation, and a constant-voltage and constant-current regulator for constant luminance control. A method and a redundancy circuit thereof for LED current detouring and LED luminance maintenance are also disclosed.

Moving forward from current generation of search engines, originally designed for web 1.0, an entirely new comprehensive information search system is presented for searching and presenting of information in the Web 2.0, and other emerging new models of the global Internet using new and emerging sources of static and dynamic information, including but not limited to professionally created web pages, consumer created content, increasingly dynamic yet invisible web or web services based web, unconnected yet relevant dark web, mobile content web, social networked web and other emerging models of content publication, with access using mobile and fixed wireless and wire-line networked computing, communication and entertainment devices, user agents and application agents, and corresponding new business and delivery models for consumer and business users worldwide through sponsored web business model, content advertising business models, keyword advertising models, multi-media advertising models or pay per search, pre-paid and service business models.

A low supply voltage band-gap reference circuit is provided, which includes a positive temperature coefficient current generation unit and a negative temperature coefficient current generation unit, and it is implemented by way of current summing. Through the current-mode temperature compensation technique, the present invention is able to reduce the voltage headroom and the number of operational amplifiers required by the conventional voltage-summing method, as well as the influence to the output voltage due to the offset voltage, thereby providing a stable and low voltage band-gap reference voltage level. In addition, by reducing the number of operational amplifiers and resistors of high resistance, the circuit area is reduced, and chip cost is saved.

The invention provides a circuit for outputting adjustable positive, negative or zero temperature coefficient current and voltage reference, including: a start-up circuit, a positive and negative temperature coefficient current generation circuit, a feedback stable and negative temperature coefficient current derivation circuit, and the temperature coefficient can be Adjusted current reference, voltage reference synthesis circuit. The invention is realized under the standard CMOS technology, has simple structure, low input voltage, and can generate current reference and voltage (VREF) reference with adjustable temperature coefficient, which can be positive, negative or zero temperature coefficient.

A bandgap reference circuit includes a current generation circuit connected to a voltage generation circuit connected to a smart clamping circuit, and a discharge circuit connected to the current generation circuit and the voltage generation circuit. The discharge circuit initially discharges a potential in the current and voltage generation circuits to improve repeatability. A start circuit within the current generation circuit then initializes the reference output at about the supply voltage to improve the speed and settling time of the output signal. The current generation circuit sources a current to the voltage generation circuit that translates the current having a positive function of temperature +T_C into a reference voltage. The smart clamping circuit further generates a clamping voltage having a negative function of temperature −T_C and a load resistance. The clamping voltage and the load resistance are applied across the reference voltage quickly reducing the reference voltage particularly at high temperatures and during start-up to a final level, thereby producing a fast and stable reference voltage.

Methods and systems for enhancing functionality of a browser application are discloses. In an embodiment, a method enhances browser functionality using a browser add-on which enables the browser application to render web pages and other mark-up language documents or browser-rendered documents, images, audio or multimedia files that are at least in part incompatible with the current generation of browser. The add-on uses the rendering engine of prior versions of the browser and overlays their rendered image of the current generation of browser. In this way, enterprises do not have to update or upgrade web-based applications and websites do not have to necessarily upgrade the website to meet or be compatible with the current generation of browsers. In another embodiment, an enhanced browser module renders requested resources based on a DOCTYPE, inherent and/or derived properties, or metadata present within a document or related to the resource's location or its delivery stream.

The band-gap reference voltage (RV) source with low temperature coefficient (TC) includes PTAT current generation circuit, start circuit of RV, combiner circuit of RV, neutralization circuit of base current, mirror circuit of first current. The band-gap RV source with low TC also includes generation circuit of second order temperature compensation current, which is connected to the mirror circuit of first current, and the combiner circuit of RV. Through square relation between drain-source current and grid-source voltage drop of MOS tube, inputting PTAT current and band-gap RV generates second order compensation current. The second order compensation current is output to the combiner circuit of RV to generate second order compensation voltage to compensate second order TC of RV so as to produce RV with very low TC. The invention overcomes issue of TC on the high side in traditional band-gap RV. Using standard CMOS technique realizes band-gap RV with very low TC.

The invention discloses a laser driver and a temperature compensation circuit thereof. The temperature compensation circuit comprises a benchmark voltage generation unit, a benchmark current generation unit, a reference voltage generation unit, and a compensation current generation unit, wherein the benchmark voltage generation unit generates a benchmark voltage which increases with the increase of the temperature; the benchmark current generation unit is connected with the benchmark voltage generation unit and outputs benchmark current which increases with the increase of the benchmark voltage; the reference voltage generation unit generates a reference voltage which increases with the increase of the temperature; the compensation current generation unit is connected with the reference voltage generation unit, obtains the compensation threshold temperature according to the reference voltage, and outputs compensation current when the temperature is higher than or equal to the compensation threshold temperature; and the benchmark current and the compensation current are overlapped to form benchmark modulation current. The laser driver comprises the temperature compensation circuit and a bias current regulation circuit. An optical signal output by the laser can have constant extinction ratio by compensating modulation current of a laser through the temperature compensation circuit, and the laser can obtain steady output optical power by compensating bias current of the laser through the bias current regulation circuit.

A control circuit of Ground Fault Circuit Interrupter (GFCI), includes a load connection circuit used to connect power end and load end while transferring AC thereof, a creepage detection circuit, a trip control circuit and a trip circuit, and further includes a self-diagnosis current generation circuit, a self-diagnosis display circuit and a first switch duct. When the input AC in positive half-cycle, one of the said trip circuit and the self-diagnosis display circuit is electrically connected, while another should be electrically connected while the input AC in negative half-cycle, so without manpower-provided simulated signal, the control circuit of GFCI can be self diagnosed of creepage protection function, for the feedback of the stand or fall circs in time.

A voltage regulator is disclosed. The voltage regulator has a voltage generation circuit that outputs a regulated voltage and a load current. The voltage regulation circuit has a sensing circuit that senses a peak magnitude of the load current and stores a peak signal that is based on the peak load current magnitude. The sensing circuit receives at least one signal that is input to the voltage regulation circuit and senses the peak magnitude of the load current. The voltage regulation circuit has a current generation circuit that generates a compensation current that has a magnitude that is proportional to the peak load current magnitude. The current generation circuit generates the compensation current based on the peak signal. The compensation current is provided during a time interval that is defined by at least one signal that is input to the voltage regulation circuit.

To suppress a DC component in AC power in a power converter for converting DC power to AC power.

DC power is converted to AC power by a converter 2, and the AC power is supplied to output terminals u1 and u2 via an inductor 3. The converter 2 is controlled based on an error Δ(t) between an output current i_P(t) outputted from the converter 2 and a target current j(t) outputted from a target current generation means 110 as a target value for the output current i_P(t), and a DC component VD in an output terminal voltage v (t) is detected by a voltage detection means 18. A DC component I_D is suppressed by correcting a target current j(t) by a DC component suppression means 8.

Also, a DC component in the AC power is suppressed to prevent biased magnification of a transformer 4 by calculating a correction amount j_h(t) for correcting the target current j(t) from the difference between a first instantaneous value d1 of a load current i_s(t) flowing to a load 4 at a first time point t1 and a second instantaneous value d2 of the load current i_s(t) at a second time point t2 that is a half cycle after the first time point to correct the target current j(t).

A modification to the prototypical compression (dynamic or sliding) hip screw is described which expands the utility and surgical indications of this frequently used fracture fixation device to include the fracture pattern commonly referred to as a “reverse obliquity fracture” of the proximal femur. This fracture pattern is poorly secured with current generation hip screws, frequently necessitating the use of intramedulary fracture fixation devices or external fixation hardware. The described modification blocks telescopic sliding of the femoral head lag screw within the cylindrical barrel of the side plate and allows for secure locking of the lag screw within the side plate, preventing any relative motion between the screw and plate once fracture reduction has been achieved. In a locked mode, the proximal fracture fragment(s) is prevented from displacing laterally relative to the distal (diaphysial) fragment, as occurs commonly when a reverse obliquity fracture or a comminuted intertrochanteric femur fracture is fixed with a conventional hip screw. No change in routine fracture reduction or insertion technique is required to use the Locking Compression Hip Screw. Additionally, the described modification does not preclude use of the Locking Compression Hip Screw in a dynamic or sliding mode, if desired, when used to fix the more common femoral neck or intertrochanteric fracture patterns.

The invention discloses a comprehensive stimulation system for realizing the coupling effects of wave, current and wind in a water tank, which comprises the water tank, a wave making machine for generating wave in the water tank, a wind making system and a current generation system. The current generation system comprises current generation pools arranged under both ends of the water tank, a hydrophobic gate which is arranged on the bottom surface of the water tank and is communicated with the water tank and the current generation pools, a current generation pipeline which is arranged outside the water tank and is connected with the current generation pools at both ends, and a water pump arranged on the current generation pipeline, wherein the current generation pipeline is provided with a water inlet and a water outlet. The wind making system comprises a fan cover which has a certain distance from the wave making machine and is arranged above the water tank; the fan cover extends to one end of the water tank which is far away from one side of the wave making machine; an airduct is arranged above the water tank at the tail end of the fan cover; the inside of the airduct is provided with a fan; and the fan cover, the airduct and the water tank are hermetically connected to form a wind tunnel. The comprehensive stimulation system can integrally and truly simulate hydrodynamic environments of harbors, seacoasts and offshore by comprehensively generating the wave, the tidal current and the wind in real time in the water tank.

A web-based management interface, program product for displaying system configuration information and method of providing system or subsystem configuration information, e.g., for a storage subsystem. A web displayable file, e.g., hypertext mark up language (HTML), is generated and updated to reflect current configuration data for a storage subsystem configuration. The web page, when displayed, includes a generation snapshot that is compared against a current generation indicator that is associated with a current HTML file. If they match, the displayed web page is current; otherwise, an updated HTML file is downloaded and displayed.