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Wide-dynamic high-accuracy and edge time adjustable impulse wave producing method,Apparatus for deriving a plasma display panel,Pulse generator and continuous-time sigma-delta modulator,Touch type audible and visible alarm fence,Pulse generator circuit and communication apparatus

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13 results about "Pulse generator" patented technology

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A pulse generator is either an electronic circuit or a piece of electronic test equipment used to generate rectangular pulses. Pulse generators are used primarily for working with digital circuits, related function generators are used primarily for analog circuits.

Wide-dynamic high-accuracy and edge time adjustable impulse wave producing method

ActiveCN102723931ASimplify complexityLower slew rateElectric pulse generatorWave shapePulse wave

The invention discloses a wide-dynamic high-accuracy and edge time adjustable impulse wave producing method which is characterized by including the following steps: (1) arranging an impulse generator; (2) building an impulse wave model according to waveforms of impulse signals generated by the impulse generator; (3) determining the amplitude modulation position according to the impulse wave model built in the step (2); (4) arranging an amplitude modulator; (5) setting a field programmable gate array (FPGA) waveform processing unit; (6) arranging a state machine and a direct digital frequency synthesizer (DDS) cooperating with the state machine in work; and (7) leading the state machine and the direct digital frequency synthesizer to cooperate in work and leading details of impulse waveforms after fine adjustment to be completely displayed. The wide-dynamic high-accuracy and edge time adjustable impulse wave producing method uses the method of amplitude for time, leads impulse edges and impulse width to be subjected to wide-dynamic and high-accuracy adjustment completely through the digital measures, simplifies complexity of a signal source analog channel circuit, saves cost and reduces production debugging operation difficulty.

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Owner:UNI TREND TECH (CHINA) CO LTD

Apparatus for deriving a plasma display panel

InactiveUS20060152448A1Reduce switching lossesReduced transient timeStatic indicating devicesWing accessoriesCapacitanceHigh concentration

A driving apparatus for a plasma display panel with a pulse generator to supply an alternating pulse to an electrode, and an energy recovering unit to store charges from a discharge cell when the pulse voltage decreases or to output the stored charges to the discharge cell when the pulse voltage increases. The energy recovering unit has a magnetic switch, coupled with the discharge cell and an energy storage capacitor, with variable inductance to control transient time when the pulse transitions from a first voltage to a second voltage. The transient time is based on LC resonance of the magnetic switch inductance and panel capacitance, and can be reduced to improve resolution of the panel. Insulated gate bipolar transistors can be used with the magnetic switches to reduce power loss during switching and in the on-state, and can sustain high voltages necessary for high concentration Xe discharge gas.

Apparatus for deriving a plasma display panel

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Owner:SAMSUNG SDI CO LTD

Pulse generator and continuous-time sigma-delta modulator

ActiveUS20100156686A1Avoid SNR DegradationAnalogue/digital conversionElectric signal transmission systemsSignal-to-noise ratio (imaging)Signal-to-quantization-noise ratio

Provided is a clock generator employed in a continuous-time sigma-delta modulator. The clock generator includes an oscillator configured to generate pulses in response to an enable signal, a counter configured to count the number of pulses generated by the oscillator and output the total pulse count, and an output circuit configured to output an inactivated output signal if the pulse count of the counter is equal to a pulse-width control bit. The oscillator includes an astable multi-vibrator. Since the astable multi-vibrator capable of generating a low-jitter pulse from a jittered clock is used as the oscillator, a signal-to-noise ratio is improved. A simple configuration using only digital circuits makes it easier to design a circuit and adjust pulse width. Moreover, according to the structure of the astable multi-vibrator, it is possible to design a circuit to optimally modulate pulse width in connection with process variations of resistors and capacitors used in the continuous-time sigma-delta modulator.

Pulse generator and continuous-time sigma-delta modulator

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Owner:ELECTRONICS & TELECOMM RES INST

Touch type audible and visible alarm fence

InactiveCN1991928AAdjustable spacingReduce energy consumptionFencingSignalling system detailsLow voltagePower switching

The invention belongs to fields of electronic protection alarm facilities, specially an electronic protection alarm enclosure which is used in temporary job location or during maintenance work. It includes chassis and backstay fixed to the chassis and voice-light alarm device, battery, power switch and control circuit which is set on the backstay, said alarm belt is enlaced to reeled device, the reeled device is fixed to the backstay, and enlaced to the alarm belt via hinge axis, contact induction device which includes pulse generator and control circuit is set on one end of the hinge axis, hanging belt hook is set on said backstay, said control circuit includes battery low voltage indicating circuit and electronic switching circuit. The invention provides a new type of enclosure which possesses enclosure belt which is adjustable and contact alarm facilities.

Touch type audible and visible alarm fence

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Owner:SHENZHEN KAILIXIANG SAFETY TECH

Pulse generator circuit and communication apparatus

InactiveUS20090219061A1Easy to operateIncrease operating powerDelay line applicationsSingle output arrangementsTiming generatorEngineering

A pulse generator circuit that outputs pulses having a predetermined shape from an output terminal based on a start signal includes a timing generator circuit that generates (n+1) signals (n is an integer greater than or equal to 2), the phases of which sequentially change at predetermined time intervals from the point when the phase of the start signal changes, first and second power supplies that supply predetermined potentials, n impedance devices, and a switching circuit that connects the output terminal to the first or second power supply in a predetermined order according to the value of a logic function based on the (n+1) signals via the corresponding impedance device.

Pulse generator circuit and communication apparatus

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Owner:138 EAST LCD ADVANCEMENTS LTD

Electrocardiogram monitoring and cardiac therapy pulse delivery system and method

InactiveUS7486990B2ElectrocardiographyHeart defibrillatorsElectricityEcg signal

A cardiac therapy pulse delivery system includes a plurality of electrodes, an ECG signal processor circuit, and a pulse generator circuit. Each of the electrodes has at least one therapy element and at least one monitor element that are electrically insulated from one another. The ECG signal processor circuit is electrically coupled to each monitor element on each electrode and is operable to convert ECG signals detected by the monitor elements into ECG data. The cardiac pulse generator circuit is electrically coupled to each therapy element on each electrode and is operable to supply one or more cardiac therapy pulses thereto.

Electrocardiogram monitoring and cardiac therapy pulse delivery system and method

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Owner:PHYSIO CONTROL INC

Light amount control device and projector

ActiveUS20080218702A1Low costIncrease costProjectorsColor photographyMemory addressData set

A light amount control device that controls an amount of light acquired from a light source provided in an image display apparatus includes: a pulse generator; an operation processing portion for light amount control that outputs a transfer start signal at timing when the amount of light is controlled; a data setting circuit that is provided outside the operation processing portion and that stores data, in which various kinds of signals instructing the operation processing portion to set transfer data beforehand are set, in a memory; an address generator that is provided outside the operation processing portion and that sets an address in response to the transfer start signal output from the operation processing portion; a memory that is a main component included in the pulse generator and that outputs data on the basis of a memory address generated by the address generator; a pulse driven body whose operation direction and speed are determined by a pulse signal formed by data output from the memory and which is driven by a pulse; an actuator connected to the pulse driven body; and an opening capable of adjusting the amount of transmitted light according to an operation of the actuator inserted in an emission path of the light source.

Light amount control device and projector

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Owner:SEIKO EPSON CORP

Ultrasonic ranging system based on single-chip microcomputer

InactiveCN104459700ADirectionalReduce consumptionAcoustic wave reradiationDisplay deviceHemt circuits

The invention belongs to the ultrasonic wave field, particularly relates to an ultrasonic ranging system based on a single-chip microcomputer and aims to realize properties of strong directivity and small-amount energy consumption. The ultrasonic ranging system comprises a pulse generator and a driver. The ultrasonic ranging system is characterized in that the pulse generator and the driver are respectively connected with the single-chip microcomputer, the single-chip microcomputer is further connected with a display and an automatic gain module, the single-chip microcomputer is connected with a callback discriminator through a shaping circuit, and the single-chip microcomputer is further connected with a conversion module.

Ultrasonic ranging system based on single-chip microcomputer

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Owner:刘铮

Timing device and method of radiation detection, measurement, identification and imaging system

ActiveCN105204060AAchieve decouplingGuaranteed independenceMeasurement with scintillation detectorsX/gamma/cosmic radiation measurmentHigh energy photonScintillation crystals

Timing device and method of radiation detection, measurement, identification and imaging system

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Owner:RAYCAN TECH CO LTD SU ZHOU

Frequency band switching method and frequency band switching system for phase-locked loop

ActiveCN102404005AShort switching timeFast switching speedPulse automatic controlLow frequency bandSwitching frequency

The invention discloses a frequency band switching method and a frequency band switching system for a phase-locked loop, and the frequency band switching method and the frequency band switching system belong to the technical field of electronics. The frequency band switching method comprises the steps of judging a size relationship between a count value of a current output frequency of a voltage-controller oscillator and a count value of an expected frequency and adjusting the current output frequency band according to the size relationship so as to determine an upper frequency band and a lower frequency band, frequencies of which have the minimal difference value with the expected frequency; and comparing the size of difference values between the count value of the expected frequency andcount values of the frequencies of the upper frequency band and the lower frequency band under a fixed voltage so as to determine the frequency band, the frequency of which has the minimal differencevalue with the expected frequency, as the switching frequency band, and switching the current output frequency band to the switching frequency band. The system comprises a rated time pulse generator,a counter and a logic controller. The frequency band of the voltage-controller oscillator is adjusted in place by one step by utilizing the difference between the count value of the expected frequency and the count value of the oscillation frequency of the central frequency band of the voltage-controller oscillator under the fixed control voltage, thereby saving the frequency band switching time and increasing the switching speed of the frequency band.

Owner:CHINA CORE FUTURE MICROELECTRONICS TECH CHENGDU CO LTD

Device and method for automatic tool tripping and reset control over PVC/PU coating tool

ActiveCN103624827AControl precisionReduce uncertain human operation factorsControlling laminationLaminationElectricityWork performance

The invention discloses a device and method for automatic tool tripping and reset control over a PVC/PU coating tool. The device comprises a color mark sensor, a pulse generator, a first counter, a second counter, a first relay and a second relay, wherein the color mark sensor is used for detecting release paper connectors, the pulse generator is used for detecting the moving distance of PVC/PU and generating pulses corresponding to the moving distance, the first counter and the second counter are used for carrying out counting on the pulses, the first relay is used for controlling a coating tool lifting up device to work, and the second relay is used for controlling a coating tool dropping down device to work. The color mark sensor is respectively and electrically connected to the first counter, the second counter and the pulse generator, the pulse generator is respectively and electrically connected to the first counter and the second counter, the first counter and the first relay are electrically connected, and the second counter and the second relay are electrically connected. The device for automatic tool tripping and reset control over the PVC/PU coating tool is stable in working performance and high in precision, and greatly reduces material waste.

Device and method for automatic tool tripping and reset control over PVC/PU coating tool

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Owner:FUJIAN POLYTECH TECH CO LTD

Portable image treatment instrument

InactiveCN1459973APictoral communicationOptical ModuleImaging processing

A portable image processor is composed of a base, three rotary axles, a movable handle connected to said base via two rotary axles, an image pick-up, and clampling head for said image pick-up and connected to said movable handle via another rotary axle. The said base consists of a group of circuits, a group of control keys, a signal port and a power port. The said image pick-up comprise an optical module, a memory, a chip, a clock pulse generator, a light source and a power supply. The said chip is composed of a microprocessor control unit and a color processor.

Owner:AIPTEK INTERNATIONAL INC

Engagement type motor

InactiveCN101001027ACompact structureHigh output torqueMagnetic circuit rotating partsMagnetic circuit stationary partsDriving currentGear wheel

The invention relates to a geared motor containing a spur gear, a inner gear, an electromagnet unit, an output shaft and a controller. The spur gear is located inside of the inner gear and engaged with the inner gear. The spur gear is taken as the rotor and inner gear is taken as the stator of the motor, or the inner gear is taken as the rotor and spur gear is taken as the stator of the motor. The electromagnet unit is composed of the many electromagnets which is always embedded on the stator or is directly integrated with the stator. The controller is for controlling the pulse-driving current, which consists of a pulse generator, a circular distributor, a driver, which sends the driving pulse to each of the electromagnet by turn.

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Owner:BEIJING UNIV OF POSTS & TELECOMM

13 results about "Pulse generator" patented technology

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