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832results about "Pulse technique" patented technology
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Input device and electronic device using the input device
InactiveUS20070080951A1Great deflection （bending） displacementInput/output for user-computer interactionDigital data processing detailsElectricityInformation type
The present invention related to an input device including: an image display unit (30) that displays information; a touch panel (15) with which a user performs input operation of information by touching a portion corresponding to the position at which the information of the image display unit is displayed; a vibration generation device (71) disposed in the image display unit and feeds back, to the user, various kinds of sense of touch in accordance with the type of the information through the touch panel; and a vibration control circuit (73) for allowing the vibration generation device to generate various forms of vibrations in accordance with the type of the information. The vibration generation device is a bimorph piezoelectric actuator. Each of first and second actuator units has multi-layered piezoelectric elements (63). By this way, it is possible to provide an input / output device capable of surely realizing a feedback to user's input operation performed in accordance with the type of information through the sense of touch when the user performs an input operation of information to a touch panel using the sense of touch.
Owner:SONY CORP
Switching power supply
InactiveUS7385380B2Highly precise and high speed current controlCurrent detectionDc-dc conversionPulse techniqueAudio power amplifierEngineering
Owner:RENESAS ELECTRONICS CORP
Electronic device and circuit for providing tactile feedback
ActiveUS20090072662A1Low costPiezoelectric/electrostriction/magnetostriction machinesDigital data processing detailsElectricityControl signal
A circuit (800) for controlling at least one piezoelectric actuator (142) includes a piezoelectric drive circuit (802) that generates unidirectional voltage drive signal, also referred to as Vout, at node (804). The piezoelectric actuator drive circuit (802) includes a boost switcher circuit or charging circuit (806), a buck switcher circuit or pulsed current sink discharge circuit (808) and a control signal generating circuit (810) that receives an input control signal (812) from, for example, a keyboard processor or other suitable processor (604) indicating that the device has requested generation of haptic feedback utilizing the piezoelectric actuator (142). The control signal generating circuit (810) provides at least two pulse-with-modulated control signals, one to control the charging circuit and one to control the discharging circuit to produce the unidirectional voltage drive signal, that in one example is a raised cosine drive signal (904).
Owner:GOOGLE TECH HLDG LLC
System and methods for raised touch screens
InactiveUS20090174673A1Increase costOperated effectively and moreCathode-ray tube indicatorsElectric switchesTouch SensesDisplay device
A touch sensitive display assembly includes a touch screen and a button array. The touch screen is configured to display one or more input keys. The button array includes one or more buttons corresponding to the one or more input keys. The button array is formed by a substrate attached to a button membrane thereby creating a set of button cavities corresponding to the input keys. The button cavities are configured to be inflated and deflated by a pump coupled to a fluid reservoir. The cavities can be inflated / deflated together, in subsets, and / or individually. In some embodiments, the button array is sandwiched between a touch sensing layer and a display of the touch screen. In other embodiments, the button array can be located either above or below the touch screen.
Owner:TACTUS TECH
Switching power supply circuitry
InactiveUS20070210774A1Guaranteed uptimeReduce power consumptionAc-dc conversionApparatus without intermediate ac conversionEngineeringControl circuit
An output voltage VC obtained by boosting an input voltage VIN by means of a charge pump control circuit 3 of a charge pump 102 is supplied as a power supply voltage to a control circuit 4 of a step-up converter. It is thus possible to eliminate the need for a conventional self-bias method, eliminate switching from startup oscillation to main oscillation of the conventional self-bias method upon startup, and overcome problems caused by the switching of oscillation states, thereby achieving switching power supply circuitry starting in a reliable and stable manner.
Owner:COLLABO INNOVATIONS INC
Gate shift register and organic light emitting diode display including the same
A gate shift register and an organic light emitting diode display including the same are disclosed. The gate shift register includes a first stage and a second stage that output image display gate pulses during an image data writing period and selectively output a sensing gate pulse in a vertical blanking interval in which image display data is not written. The first stage includes a node Q1, a node Qbo, a node M, a first sensing control block activating the node Q1, and a second sensing control block deactivating the node Qbo. The second stage includes a node Q2, a node Qbe, a third sensing control block activating the node Q2, and a fourth sensing control block deactivating the node Qbe. The first stage and the second stage share a partial circuit necessary for driving with each other.
Owner:LG DISPLAY CO LTD
Method and Apparatus for use in Improving Linearity of MOSFETS using an Accumulated Charge Sink-Harmonic Wrinkle Reduction
ActiveUS20120267719A1Improving nonlinear responseImprove harmonicsSolid-state devicesPulse techniqueMOSFETHarmonic
A method and apparatus for use in improving linearity sensitivity of MOSFET devices having an accumulated charge sink (ACS) are disclosed. The method and apparatus are adapted to address degradation in second- and third-order intermodulation harmonic distortion at a desired range of operating voltage in devices employing an accumulated charge sink.
Owner:PSEMI CORP
Input device and electronic device using the input device
InactiveUS7663604B2Great deflection （bending） displacementInput/output for user-computer interactionDigital data processing detailsElectricityVibration control
An input device includes a touch panel with which a user performs an input operation of information by touching the touch panel. The input device further includes a vibration generation device for feeding back, to the user, various kinds of sense of touch in accordance with the type of the information through the touch panel. Additionally, the input device includes a vibration control circuit for allowing the vibration generation device to generate various forms of vibrations in accordance with the type of the information. The vibration generation device is a bimorph piezoelectric actuator including a first actuator unit and a second actuator unit stacked on the first actuator unit in which when one of the first and second actuator units expands, the other contracts. Further, each of the first and second actuator units has a multi-layered piezoelectric element layer.
Owner:SONY CORP
Sensing Assembly for Mobile Device
InactiveUS20100294938A1Radiation pyrometryMaterial analysis by optical meansEngineeringMobile device
An infrared sensing assembly for allowing detection of a location of an external object, as well as a mobile device employing such an assembly and related methods of operation, among other things, are disclosed. In one exemplary embodiment, the sensing assembly includes a pyramid-type housing structure having a central surface and multiple outer surfaces each of which extends in an inclined manner away from the central surface. The sensing assembly further includes multiple phototransmitters each positioned proximate to a respective one of the outer surfaces, and a photoreceiver positioned proximate to the central surface, with each respective photoelectric device being oriented so as to correspond to its respective surface. The sensing assembly is operated so that light is emitted from the phototransmitters, reflected by the object, and received by the photoreceiver. By processing signals from the photoreceiver that are indicative of the received light, the external object's location is determined.
Owner:GOOGLE TECH HLDG LLC
Acoustic condition sensor employing a plurality of mutually non-orthogonal waves
InactiveUS20050012724A1Improve performanceDiffering sensitivityTransmission systemsCathode-ray tube indicatorsAcoustic waveWave mode
A touch sensor comprising an acoustic wave transmissive medium having a surface; a plurality of acoustic wave path forming systems, each generating a set of incrementally varying paths through said transmissive medium; and a receiver, receiving signals representing said sets of waves, a portion of each set overlapping temporally or physically by propagating in said transmissive medium along axes which are not orthogonal. The waves may also be of differing wave modes. The receiver system may include a phase, waveform or amplitude sensitive system. Reflective arrays are associated with said medium situated along a path, said path not being a linear segment parallel to a coordinate axis of a substrate in a Cartesian space, a segment parallel to an axial axis or perpendicular to a radial axis of a substrate in a cylindrical space, nor parallel and adjacent to a side of a rectangular region of a small solid angle section of a sphere; situated along a path substantially not corresponding to a desired coordinate axis of a touch position output signal; situated along a path substantially non-parallel to an edge of said medium; has a spacing of elements in said array which differs, over at least one portion thereof, from an integral multiple of a wavelength of an incident acoustic wave; has elements in said array which are non-parallel; has an angle of acceptance of acoustic waves which varies over regions of said array; and / or coherently scatter at least two distinguishable acoustic waves which are received by said receiving system.
Owner:ELO TOUCH SOLUTIONS INC
System and methods for raised touch screens
InactiveUS8547339B2Increasing costOperated effectively and moreCathode-ray tube indicatorsElectric switchesTouch SensesDisplay device
A touch sensitive display assembly includes a touch screen and a button array. The touch screen is configured to display one or more input keys. The button array includes one or more buttons corresponding to the one or more input keys. The button array is formed by a substrate attached to a button membrane thereby creating a set of button cavities corresponding to the input keys. The button cavities are configured to be inflated and deflated by a pump coupled to a fluid reservoir. The cavities can be inflated / deflated together, in subsets, and / or individually. In some embodiments, the button array is sandwiched between a touch sensing layer and a display of the touch screen. In other embodiments, the button array can be located either above or below the touch screen.
Owner:TACTUS TECH
Pointing device comprising a light control part and electronic apparatus comprising an input device
InactiveUS8743088B2Improve detection accuracyAvoid failurePhotometry using reference valueDiffusing elementsPointing deviceElectric devices
Owner:SHARP KK
Occupant presence detection device
InactiveUS7135983B2Less expensivePrecision componentVehicle seatsBelt retractorsCapacitanceDifferential amplifier
The purpose of this invention is to sense the presence of a seated occupant in a vehicle such as an automobile, plane, train or bus, or in a room or location where it is desirable to detect if seats are occupied. The occupant presence detection device consists of a single seat-mounted electrode, an oscillator circuit, a bridge circuit, a detection circuit and a circuit for processing the detected signals. The oscillator circuit excites the electrode. If an occupant is present on the seat, additional capacitance from the human body is introduced into the bridge via the electrode. This created differences in the voltage and phase of the waveform in each arm of the bridge circuit which are amplified by a differential amplifier. The signal is then converted to a DC voltage that, when above a predetermined threshold, causes the device to outputs a signal that indicates the presence of an occupant. Using a bridge configuration and a differential amplifier allows the circuit to be operated over a wide range of supply voltages. It also reduces the need for high precision components and the need to regulate the amplitude of the waveform produced by the oscillator. The net result is a capacitive occupant sensing device that is less complex and less expensive that previous capacitive occupant sensing devices, yet is tolerant of power supply fluctuations, is able to function over a wide range of operating voltage and still provides failsafe functionality.
Owner:INTELLIGENT MECHANTRONIC SYST INC
Load control device having a variable drive circuit
ActiveUS7619365B2Electric light circuit arrangementIncandescent lamp energy savingElectricityElectrical connection
A load control device for controlling the amount of power delivered to an electrical load from a source of AC power comprises a controllably conductive device and a variable gate drive circuit. The controllably conductive device is coupled in series electrical connection between the source and the electrical load to control the amount of power delivered to the load. The variable drive circuit is thermally coupled to the controllably conductive device and provides a continuously variable impedance in series with the control input of the controllably conductive device. The impedance of the variable drive circuit is operable to decrease as a temperature of the controllably conductive device increases and vice versa. Preferably, the variable drive circuit comprises an NTC thermistor. Accordingly, the switching times of the controllably conductive device, i.e., the times when the controllably conductive device is changing between the conductive and non-conductive states, remain constant, or alternatively decrease, as the temperature of the controllably conductive device increases.
Owner:LUTRON TECH CO LLC
Double data rate (DDR) counter, analog-to-digital converter (ADC) using the same, CMOS image sensor using the same and methods in DDR counter, ADC and CMOS image sensor
InactiveUS20100225796A1Television system detailsElectric signal transmission systemsCMOSDouble data rate
In a double data rate (DDR) counter and counting method used in, for example, an analog-to-digital conversion in, for example, a CMOS image sensor and method, a first stage of the counter generates a least significant bit (LSB) of the value in the counter. The counter includes at least one second stage for generating another bit of the value in the counter. An input clock signal is applied to a data input of the first stage and a clock input of the second stage.
Owner:SAMSUNG ELECTRONICS CO LTD
Electronic device and circuit for providing tactile feedback
ActiveUS7667371B2Low costPiezoelectric/electrostriction/magnetostriction machinesDigital data processing detailsControl signalPiezoelectric actuators
A circuit (800) for controlling at least one piezoelectric actuator (142) includes a piezoelectric drive circuit (802) that generates unidirectional voltage drive signal, also referred to as Vout, at node (804). The piezoelectric actuator drive circuit (802) includes a boost switcher circuit or charging circuit (806), a buck switcher circuit or pulsed current sink discharge circuit (808) and a control signal generating circuit (810) that receives an input control signal (812) from, for example, a keyboard processor or other suitable processor (604) indicating that the device has requested generation of haptic feedback utilizing the piezoelectric actuator (142). The control signal generating circuit (810) provides at least two pulse-with-modulated control signals, one to control the charging circuit and one to control the discharging circuit to produce the unidirectional voltage drive signal, that in one example is a raised cosine drive signal (904).
Owner:GOOGLE TECHNOLOGY HOLDINGS LLC
Switching power supply circuitry
InactiveUS7714546B2Positively startPositively startedAc-dc conversionApparatus without intermediate ac conversionEngineeringControl circuit
An output voltage VC obtained by boosting an input voltage VIN by means of a charge pump control circuit 3 of a charge pump 102 is supplied as a power supply voltage to a control circuit 4 of a step-up converter. It is thus possible to eliminate the need for a conventional self-bias method, eliminate switching from startup oscillation to main oscillation of the conventional self-bias method upon startup, and overcome problems caused by the switching of oscillation states, thereby achieving switching power supply circuitry starting in a reliable and stable manner.
Owner:COLLABO INNOVATIONS INC
Method and apparatus for use in improving linearity of MOSFETs using an accumulated charge sink-harmonic wrinkle reduction
A method and apparatus for use in improving linearity sensitivity of MOSFET devices having an accumulated charge sink (ACS) are disclosed. The method and apparatus are adapted to address degradation in second- and third-order intermodulation harmonic distortion at a desired range of operating voltage in devices employing an accumulated charge sink.
Owner:PSEMI CORP
Fast time-of-flight mass spectrometer with improved data acquisition system
ActiveUS20050006577A1Reduce data volumeImprove dynamic rangeSpectrometer detectorsTime-of-flight spectrometersData acquisitionSystem time
Time-of-flight mass spectrometer instruments are disclosed for monitoring fast processes with large dynamic range using a multi-threshold TDC data acquisition method or a threshold ADC data acquisition method. Embodiments using a combination of both methods are also disclosed.
Owner:IONWERKS
Acoustic condition sensor employing a plurality of mutually non-orthogonal waves
InactiveUS7061475B2Improve the level ofReliable reconstructionTransmission systemsCathode-ray tube indicatorsAcoustic waveWave mode
Owner:ELO TOUCH SOLUTIONS INC
Hybrid bootstrap capacitor refresh technique for charger/converter
ActiveUS20140217959A1Batteries circuit arrangementsEfficient power electronics conversionMOSFETCapacitance
The disclosed embodiments provide a synchronous switching converter that converts a DC input voltage into a DC output voltage. This synchronous switching converter includes a high-side switching MOSFET coupled between an input node and a first node. The converter also includes a low-side switching MOSFET coupled between the first node and a ground node and is in series with the high-side switching MOSFET. This converter additionally includes a bootstrap capacitor coupled to the high-side switching MOSFET to provide turn-on voltage for the high-side switching MOSFET. Furthermore, the converter includes a main refresh circuit coupled to the bootstrap capacitor and is configured to refresh the bootstrap capacitor during a first operating mode of the synchronous switching converter. Moreover, the converter includes an auxiliary refresh circuit coupled to the main refresh circuit and the bootstrap capacitor and is configured to refresh the bootstrap capacitor during a second operating mode of the converter.
Owner:APPLE INC
Baseline updating method and touch device
ActiveCN102855032AWork lessDoes not affect work speedPulse techniqueInput/output processes for data processingCapacitanceTime range
The invention provides a baseline updating method. The baseline updating method includes: detecting a first frame capacitance value; setting a baseline according to the first frame capacitance value; detecting a current capacitance value of a touch screen, and calculating a difference value between the capacitance value and the baseline; when the difference value between the capacitance value and the baseline is smaller than a negative noise threshold, starting a first timer for timing; if the difference values within a first time range are smaller than the negative noise threshold, updating the baseline according to the capacitance value to activate an extreme value recovery function of the baseline; judging whether the touch screen is touched or not according to the difference value between the current capacitance value and the updated baseline; and if judgment shows that the touch screen is touched, deactivating the extreme value recovery function of the baseline to enable the baseline not to be updated when the difference value between the current capacitance value and the updated baseline is smaller than the negative noise threshold again. By the aid of the baseline updating method in the embodiment, the touch screen is applicable to various operating environments while the operating speed of the touch screen is unaffected, and a certain waterproof effect can be achieved.
Owner:BYD SEMICON CO LTD
Proximity sensor with adaptive threshold
InactiveUS6933922B2False detectionEnergy efficient ICTMaterial analysis by optical meansProximity sensorMultiple sensor
A proximity sensor measures receptor output with an energy source deactivated. The sensor then measures receptor output with the energy source activated. The measurements with the energy source activated are compared to the measurements with the energy source deactivated to compensate for the effect of ambient conditions. A near condition is recognized if the change between the two groups of measurements exceeds a designated value. To compensate for receptor output that may decrease after reaching a peak value during approach of an object, a near condition can be maintained until the change between the two groups of measurements no longer exceeds a different designated value. Multiple sensors can be used to avoid false near conditions caused by, e.g., placing a device equipped with the sensors next to a stationary object. In one embodiment, a sensor comprises an infrared light emitting diode and a phototransistor.
Owner:MICROSOFT TECH LICENSING LLC
Time-Resolved Single-Photon or Ultra-Weak Light Multi-Dimensional Imaging Spectrum System and Method
InactiveUS20140253713A1Improve reconstruction qualityShorten recovery timeColor television detailsClosed circuit television systemsSpatial light modulatorGrating
A single-photon or ultra-weak light multi-D imaging spectral system and method. In order to realize rough time resolution, a time-resolved single-photon counting 2D imaging system for forming color or grey imaging is provided. Moreover, in order to realize high-precision time resolution, the system comprises a light source, an imaging spectral measurement unit, an electric detection unit, a system control unit and an algorithm unit. The light carrying information of an object is imaged on a spatial light modulator and randomly modulated according to compressed sensing theory, emergent light of a grating is collected using a point or array single-photon detector, the number of photons and photon arrival time are recorded, and reconstruction is carried out using the compressed sensing algorithm and related algorithm of the spectral imaging. The system provides single-photon detection sensitivity, high time resolution and wide spectral range, and can be applied in numerous new high-tech industries.
Owner:CENT FOR SPACE SCI & APPLIED RES
Fast time-of-flight mass spectrometer with improved data acquisition system
ActiveUS7084393B2Reduce data volumeImprove dynamic rangeSpectrometer detectorsTime-of-flight spectrometersTime-of-flight mass spectrometryData acquisition
Time-of-flight mass spectrometer instruments are disclosed for monitoring fast processes with large dynamic range using a multi-threshold TDC data acquisition method or a threshold ADC data acquisition method. Embodiments using a combination of both methods are also disclosed.
Owner:IONWERKS
Input device and electronic device using the input device
InactiveCN1678978AImplement feedbackInput/output for user-computer interactionDigital data processing detailsElectricityInformation type
The present invention related to an input device including: an image display unit (30) that displays information; a touch panel (15) with which a user performs input operation of information by touching a portion corresponding to the position at which the information of the image display unit is displayed; a vibration generation device (71) disposed in the image display unit and feeds back, to the user, various kinds of sense of touch in accordance with the type of the information through the touch panel; and a vibration control circuit for allowing the vibration generation device to generate various forms of vibrations in accordance with the type of the information. The vibration generation device is a bimorph piezoelectric actuator. Each of first and second actuator units has multi-layered piezoelectric elements. By this way, it is possible to provide an input / output device capable of surely realizing a feedback to user's input operation performed in accordance with the type of information through the sense of touch when the user performs an input operation of information to a touch panel using the sense of touch.
Owner:SONY GRP CORP
Multiprocessor system
ActiveUS20090070772A1Improve performanceImprove efficiencyEnergy efficient ICTMultiprogramming arrangementsMulti processorControl system
In case of a task scheduling processing that assigns plural divided execution program tasks to plural processor units, a multiprocessor system using SOI / MOS transistors employs two processes; one process is to determine an order to execute those tasks so as to reduce the program execution time and the other process is to control the system power upon task scheduling so as to control the clock signal frequency and the body-bias voltage to temporarily speed up the operation of a processor unit that processes another task that might affect the processing performance of one object task if there is dependency among those tasks.
Owner:HITACHI LTD
Time-resolved single-photon counting two-dimensional imaging system and method
ActiveCN102510282AResolve SensitivitySolve the small size of the arrayPulse techniqueDigital micro mirror deviceData acquisition
The invention provides a time-resolved single-photon counting two-dimensional imaging system and a time-resolved single-photon counting two-dimensional imaging method and belongs to the technical field of extremely-weak light detection. A trigger 2 is triggered to start sampling, centralized sampling is performed at t time intervals, and measurement and counting are performed if light comes at the intervals, so that time resolving of an extremely-weak light object is realized, and a time sequence image is generated. Imaging is performed on the basis of a compressive sensing (CS) theory, a digital micro-mirror device (DMD5) performs linear random projection on a compressible two-dimensional image, the compressible two-dimensional image is optically modulated and then synchronously detected by using a single-photon counter, and a high-resolution extremely-weak light image can be reconstructed by a small amount of sampling operation. The measurement process is linear and non-adaptive, the reconstruction process is non-linear, and the invention has the advantages of high generality, robustness, expandability, superposition and computation asymmetry, and can be widely applied to the fields of life science, medical imaging, data acquisition, communication, astronomy, military affairs, hyper-spectral imaging and quantum measurement.
Owner:NAT SPACE SCI CENT CAS
Mobile communication apparatus including dividers in transmitter and receiver
A transceiver suitable for larger scale of integration employs direct conversion reception for reducing the number of filters. Also, the number of VCOs is reduced by utilizing dividers to supply a receiver and a transmitter with locally oscillated signals at an RF band. Dividers each having a fixed division ratio are used for generating locally oscillated signals for the receiver, while a divider having a switchable division ratio are used for generating the locally oscillated signal for the transmitter. In addition, a variable gain amplifier for baseband signal is provided with a DC offset voltage detector and a DC offset canceling circuit for supporting high speed data communications to accomplish fast cancellation of a DC offset by eliminating intervention of a filter within a feedback loop for offset cancellation.
Owner:TTPCOM
System and method for implementing a counter
InactiveUS7065607B2Improves counter longevityReduces bit transitionsMemory loss protectionMemory adressing/allocation/relocationComputer scienceLarge range
A counter is provided which can be implemented in flash memory allowing longer life through fewer erasures. The counter is incremented using a method that minimizes bit transitions from 1 to 0. In one embodiment, the counter is implemented in m+n bits. The bits of the counter are grouped into a binary portion of the counter of m bits and a unary portion of the counter of n bits. In order to increment the counter, the unary portion of the counter is incremented first. When the unary portion of the counter reaches a specific value, the binary portion of the counter is incremented. This limits 1 to 0 bit transitions and allows a large range of unique values to be read from the counter. In another embodiment, two unary counters are formed, which dynamically change in size as the counter is incremented.
Owner:MICROSOFT TECH LICENSING LLC
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