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848 results about "Analog signal processing" patented technology
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Analog signal processing is a type of signal processing conducted on continuous analog signals by some analog means (as opposed to the discrete digital signal processing where the signal processing is carried out by a digital process). "Analog" indicates something that is mathematically represented as a set of continuous values. This differs from "digital" which uses a series of discrete quantities to represent signal. Analog values are typically represented as a voltage, electric current, or electric charge around components in the electronic devices. An error or noise affecting such physical quantities will result in a corresponding error in the signals represented by such physical quantities.
Apparatus and method for perceiving physical and emotional state
An apparatus and method for perceiving a physical and emotional state, which allows easy attachment to and detachment from a human body, and through which a bio-signal is simply detected, are provided. The apparatus includes a bio-signal detection part attached to a predetermined portion of a body for performing analog signal processing on at least one bio-signal detected from the body and outputting the processed bio-signal, and a bio-signal recognizing part for performing digital signal processing on the processed bio-signal received from the bio-signal detection part, perceiving the physical and emotional state from the result of the digital signal processing, and representing the physical and emotional state. Accordingly, the apparatus can be conveniently attached to a predetermined portion of a user's body, a bio-signal transmitted wirelessly or through a wire can be easily detected, a physical and emotional state which is perceived based on the detected bio-signal can be reported to the user, and a rapidly changing emotional state or an emotional state which remains for a long time can be perceived in real time.
Owner:SAMSUNG ELECTRONICS CO LTD
Calibration of integrated circuit time constants
InactiveUS6842710B1Computing operations for integral formationComputing operations for integration/differentiationRC time constantVoltage reference
A method and system for calibrating a time constant within an integrated circuit. A voltage storage element is charged, and the time required to achieve a reference voltage on the storage element is measured. The measured time is compared to a desired time. It necessary, an adjustable impedance is modified to change the charging time, and the cycle may be repeated until the charging time matches the desired time. In this novel manner, an actual RC time constant, as rendered in a particular integrated circuit, is measured and potentially adjusted to match a desired time constant. Advantageously, configuration information of the adjustable impedance may be communicated to other circuitry within the integrated circuit to enable such circuitry to implement the same RC time constant in analog signal processing. Consequently, embodiments of the present invention overcome incidences of wide tolerance in passive components implemented in integrated circuits. Beneficially, no external test equipment is required.
Owner:TAMIRAS PER PTE LTD LLC
Digital and analog television signal digitization and processing device
InactiveUS7102692B1Easy to processImprove sampling performanceTelevision system detailsElectric signal transmission systemsFrequency generationAnalog signal processing
A digital and analog television signal digitization and processing device that performs the digitization and processing functions using a common reference frequency source that is used to generate multiple subclock signals, wherein the reference frequency source is independent of any synchronizing characteristic of the input signal. For dual channel analog signal processing, the common frequency source is not locked to either channel / input signal. Digital signal processing is accomplished based on the same common reference frequency source. Advantageously, the present invention allows all of the analog-to-digital converters and decoder circuitry / logic necessary for simultaneously digitizing and processing several analog and digital television signals to be integrated on a single integrated circuit as well as eliminating duplicate frequency generation circuits.
Owner:MAGNOLIA LICENSING LLC
Analog signal processing circuit and communication device therewith
InactiveUS20070066254A1Reduce in quantityDisadvantageous in consumptionTransmissionSignal processing circuitsFrequency conversion
An analog signal processing circuit including: a frequency conversion unit for receiving a plurality of radio frequency signals having different center frequencies or a plurality of radio frequency signals having the same center frequencies but different amplitude-characteristics or phase-characteristics and converting the frequencies of the signals; a frequency selection unit for selecting a signal output from the frequency conversion unit at a predetermined band width; and an addition unit for adding a plurality of signals output from the frequency selection unit is provided.
Owner:KK TOSHIBA
Systems and methods for fault-based power signal interruption
InactiveUS20050018371A1Reducing and eliminating chanceEasily damagedProvisions for user interfaceArrangements responsive to excess currentAnalog signal processingSystems approaches
Systems, methods, and apparatus for fault detection and interruption in power lines are provided. Circuitry is implemented via software and hardware that is configured to sense an operational aspect of a power line and apply signal processing to the sensed operational aspect to detect faults including different types of faults such as transient and steady state faults and can also be configured to identify the type of fault. Information on the fault and the identification of the type of fault can be displayed, stored, or some other output operation can be implemented. Circuitry can be implemented to provide digital signal processing and analog signal processing to, for example, independently and in parallel (e.g., redundant operation) detect faults and respond to faults as they occur (i.e., in real time). The types of faults can include transient type faults that can include ground, arc, line-to-line, and imbalance type faults and can also include steady state type faults (e.g., those showing wear in the machinery of a load).
Owner:TDG AEROSPACE
Control system using a nonlinear delta-sigma modulator with nonlinear process modeling
ActiveUS7554473B2Electric signal transmission systemsEfficient power electronics conversionNonlinear resistorFrequency spectrum
A control system includes a nonlinear delta-sigma modulator, and the nonlinear delta-sigma modulator includes a nonlinear process model that models a nonlinear process in a signal processing system, such as a nonlinear plant. The nonlinear delta-sigma modulator includes a feedback model that models the nonlinear process being controlled and facilitates spectral shaping to shift noise out of a baseband in a spectral domain of a response signal of the nonlinear process. In at least one embodiment, the nonlinear delta-sigma modulator is part of a control system that controls power factor correction and output voltage of a switching power converter. The control system controls the pulse width and period of a control signal to control power factor correction and the output voltage level. In at least one embodiment, the nonlinear delta-sigma modulator generates a signal to control the pulse width of the control signal.
Owner:CIRRUS LOGIC INC
Buffer circuit, image reading apparatus, and image forming apparatus
InactiveUS20070188638A1Television system detailsTelevision system scanning detailsImage formationAnalog signal processing
Example embodiments of the present invention relate generally to a buffer circuit capable of suppressing the adverse influence of excessive voltage or current output from a photoelectric converting element on an analog signal processing circuit coupled to the photoelectric converting element, and an image reading apparatus or image forming apparatus incorporating the photoelectric converting element, the buffer circuit, and the analog signal processing circuit.
Owner:RICOH KK
Video recording apparatus with indexing of recording media
InactiveUS6035091AEasy to operateTelevision system detailsHelical scan formatMagnetic tapeVideo record
A picture signal recording / reproducing apparatus is disclosed in which a CPU 11 records the identification information for discriminating the video cassette during picture recording on a magnetic tape, while recording the recording information indicating the recording contents, such as the still picture data for program scenes, in memories 13 and 14 in association with the identification information. During reproduction, the CPU 11 reads out still picture data of each program from the memories 13 and 14, while a digital signal processing circuit 15 converts the still picture data of each program as a multi-picture into analog signals which are outputted to a TV receiver via an analog signal processing circuit 23 and an output terminal 33. The result is that the scenes of plural programs recorded in each of plural video cassettes are displayed on the TV receiver. This permits the user to easily recognize the program recorded on the video cassettes and to reproduce the desired program or to record a program in an optimum video cassette.
Owner:SONY CORP
Semiconductor device and electronic device
InactiveUS20050199987A1Suppress output fluctuationMiniaturizationHigh frequency amplifiersSemiconductor/solid-state device detailsLow noiseHigh frequency power
This invention provides a high frequency power module which is incorporated into a mobile phone and which incorporates high frequency portion analogue signal processing ICs including low noise amplifiers which amplify an extremely weak signal therein. A semiconductor device includes a sealing body which is made of insulation resin, a plurality of leads which are provided inside and outside the sealing body, a tab which is provided inside the sealing body and has a semiconductor element fixing region and a wire connection region on a main surface thereof, a semiconductor element which is fixed to the semiconductor element fixing region and includes electrode terminals on an exposed main surface, conductive wires which connect electrode terminals of the semiconductor element and the leads, and conductive wires which connect electrode terminals of the semiconductor element and the wire connecting region of the tab. In such a semiconductor device, a circuit formed in the semiconductor element in a monolithic manner is comprised of a plurality of circuit parts and, in a specified circuit part (a low noise amplifier) which forms a portion of the circuit parts, all grounding electrode terminals out of electrode terminals of the semiconductor element are not connected to the tab through wires but are connected with the leads through wires.
Owner:RENESAS ELECTRONICS CORP
Electrode for living body and device for detecting living signal
ActiveUS7668580B2Stable maintenanceSimple structureElectrocardiographySensorsBiological bodyElectricity
A biosignal measurement device includes an electrode and a signal processing member. The electrode includes an insulation sheet having a hole, a device contact portion provided on the top surface of the insulation sheet and a body contact portion provided on the bottom surface of the insulation sheet, the device contact portion and the body contact portion electrically connected to each other via the hole. The signal processing member includes an externally exposed terminal to make surface contact with the device contact portion, an analog signal processing unit, an A / D signal converter and a digital signal processing unit. Also, the device contact portion and the body contact portion are formed of a material which is both conductive and adhesive. Accordingly, the signal processing member may be directly attached. Noise may be reduced. Also, a biosignal may be accurately measured.
Owner:SAMSUNG ELECTRONICS CO LTD
Bracelet capable of collecting multi-parameter health indexes
InactiveCN104000571AImprove accuracyObvious pulseDiagnostic recording/measuringSensorsHealth indexAnalog signal processing
The invention discloses a bracelet capable of collecting multi-parameter health indexes. The bracelet comprises a body and a wrist strap. The body comprises a shell body, a displaying screen, a power supply, a clock part and a main control system. The displaying screen, the power supply, the clock part and the main control system are arranged in the shell body. The main control system comprises a main printed board, a microprocessor, a storage, an analogue signal processing chip and a Bluetooth transmission device. The microprocessor, the storage, the analogue signal processing chip and the Bluetooth transmission device are arranged on the main printed board. An infrared temperature sensor, an alarming device, a gravitational acceleration sensor for step counting and a charging connector are arranged on the main printed board. A flexible connecting wire cable, a measuring printed board, a body surface temperature sensor, a photosensitive sensor and a light source are arranged on the wrist strap. The body surface temperature sensor, the photosensitive sensor and the light source are integrated on the measuring printed board. A tensioning device is arranged on the wrist strap. The bracelet is small and light, wearing and using are convenient, various health parameters can be monitored accurately, human body parameters are collected near the Neiguan point under a wrist of a palm side, the number of blood vessels under the wrist is large, pulsation is obvious, and accordingly the accuracy of data testing and obtaining through the bracelet is greatly improved.
Owner:CHENGDU ICARETECH
Compute memory
ActiveUS20160232951A1Achieve energy efficiencyReduce delaysDigital storageAnalog signal processingBit plane
A compute memory system can include a memory array and a controller that generates N-ary weighted (e.g., binary weighted) access pulses for a set of word lines during a single read operation. This multi-row read generates a charge on a bit line representing a word stored in a column of the memory array. The compute memory system further includes an embedded analog signal processor stage through which voltages from bit lines can be processed in the analog domain. Data is written into the memory array in a manner that stores words in columns instead of the traditional row configuration.
Owner:THE BOARD OF TRUSTEES OF THE UNIV OF ILLINOIS
Method of detecting run-dry conditions in fuel systems
ActiveUS7352550B2Reducing and eliminating chanceEasily damagedArrangements responsive to excess currentEmergency protective arrangements for limiting excess voltage/currentThree-phaseAnalog signal processing
Systems, methods, and apparatus for fault detection and interruption in power lines are provided. Circuitry is implemented via software and hardware that is configured to sense an operational aspect of a power line, such as current levels in a three-phase power line, and apply signal processing to the sensed operational aspect to detect faults including different types of faults such as transient and steady state faults and can also be configured to identify the type of fault. Information on the fault and the identification of the type of fault can be displayed, stored, or some other output operation can be implemented. Circuitry can be implemented to provide digital signal processing and analog signal processing to, for example, independently and in parallel (e.g., redundant operation) detect faults and respond to faults as they occur (i.e., in real time).
Owner:TDG AEROSPACE
Hearing aid with adaptive microphone matching
ActiveUS7027607B2Reduce the differenceTransducer casings/cabinets/supportsDeaf-aid setsEngineeringHearing aid
A method and apparatus for matching or balancing average signal levels between at least two input signal channels and their respective microphone elements so as to allow a hearing aid or instrument to maintain optimum directional characteristics over time are provided. The hearing aid may comprise an analogue signal processor or a digital signal processor adapted for controlling characteristics, e.g., gain and / or frequency response, of one or more of the input signal channels.
Owner:GN HEARING AS
Intelligent sports healthcare bracelet
ActiveCN104522945AImprove the decorative effectHumanized designDiagnostic recording/measuringBraceletsYounger peopleEngineering
The invention discloses an intelligent sports healthcare bracelet which comprises a bracelet belt, a lock head and a lock hole. A control unit is arranged in the bracelet belt and comprises a printed circuit mainboard. A central processor, an analog signal processing chip, sensors, a power module, a voice module, a time control module, a Bluetooth module, a key input module, a timing vibration motor and a storage device are arranged on the printed circuit mainboard. The sensors comprise the electrocardio sensor and the skin impedance sensor. Electrode wires for releasing detection current are arranged on the electrocardio sensor and the skin impedance sensor. The sensor is electrically connected with the central processor through the analog signal processing module, and the power module, an electric quantity detection module, the voice module, the time control module, the Bluetooth module, the key input module, the timing vibration motor and the storage device are electrically connected with the central processor. The intelligent sports healthcare bracelet is practical in design, user-friendly, close to daily life and suitable for young people and the aged.
Owner:CHENGDU ICARETECH
Systems and methods for fault-based power signal interruption
InactiveUS7254004B2Reducing and eliminating chanceEasily damagedProvisions for user interfaceArrangements responsive to excess currentAnalog signal processingElectric power
Systems, methods, and apparatus for fault detection and interruption in power lines are provided. Circuitry is implemented via software and hardware that is configured to sense an operational aspect of a power line and apply signal processing to the sensed operational aspect to detect faults including different types of faults such as transient and steady state faults and can also be configured to identify the type of fault. Information on the fault and the identification of the type of fault can be displayed, stored, or some other output operation can be implemented. Circuitry can be implemented to provide digital signal processing and analog signal processing to, for example, independently and in parallel (e.g., redundant operation) detect faults and respond to faults as they occur (i.e., in real time). The types of faults can include transient type faults that can include ground, arc, line-to-line, and imbalance type faults and can also include steady state type faults (e.g., those showing wear in the machinery of a load).
Owner:TDG AEROSPACE
Electrode for living body and device for detecting living signal
ActiveUS20070093705A1Stable maintenanceSimple structureElectrocardiographySensorsElectricityMeasurement device
A biosignal measurement device includes an electrode and a signal processing member. The electrode includes an insulation sheet having a hole, a device contact portion provided on the top surface of the insulation sheet and a body contact portion provided on the bottom surface of the insulation sheet, the device contact portion and the body contact portion electrically connected to each other via the hole. The signal processing member includes an externally exposed terminal to make surface contact with the device contact portion, an analog signal processing unit, an A / D signal converter and a digital signal processing unit. Also, the device contact portion and the body contact portion are formed of a material which is both conductive and adhesive. Accordingly, the signal processing member may be directly attached. Noise may be reduced. Also, a biosignal may be accurately measured.
Owner:SAMSUNG ELECTRONICS CO LTD
I/Q mismatch compensation in an OFDM receiver in presence of frequency offset
A receiver for an orthogonal frequency division multiplex radio signal in which a carrier frequency is modulated by sub-carrier signals (S1) coded with data. Analogue signal processing means (3 to 12) produces base-band analogue signals (I-Rx, Q-Rx) in phase quadrature and analogue-to-digital converters (13, 14) convert the analogue signals to phase quadrature digital signals (xI(n), xq(n)). The digital signal processor includes the OFDM demodulator (15) and mismatch compensation (17, 18). The mismatch compensation (17, 18) combines each of the reproduced sub-carrier signals (RI) with a limited number of the reproduced sub-carrier signals (RI-Rk) according to respective frequency offset coefficient (I, k) that is a function of an estimated value of the offset (fc) of the reference frequency relative to the carrier frequency.
Owner:APPLE INC
Method and system for artifact reduction
ActiveUS8335664B2Eliminate artifactsBioreactor/fermenter combinationsBiological substance pretreatmentsPhysical entityAnalog signal processing
A method is presented for obtaining characteristics of a target physical entity by providing an excitation signal to the target physical entity and simultaneously measuring the response of the target physical entity. Analog signal processing is performed on the measured response to eliminate artifacts arising from a signal path outside the target physical entity and determining the characteristics from the signal processed measured response. The excitation signal and the analog signal processing are selected such that after analog signal processing of the measured signal, the analog measured signal contains artifacts which are localized in time.
Owner:INTERUNIVERSITAIR MICRO ELECTRONICS CENT (IMEC VZW)
Apparatus and method for perceiving physical and emotional state
InactiveUS20030078505A1Electric signal transmission systemsSurgeryEngineeringAnalog signal processing
An apparatus and method for perceiving a physical and emotional state, which allows easy attachment to and detachment from a human body, and through which a bio-signal is simply detected, are provided. The apparatus includes a bio-signal detection part attached to a predetermined portion of a body for performing analog signal processing on at least one bio-signal detected from the body and outputting the processed bio-signal, and a bio-signal recognizing part for performing digital signal processing on the processed bio-signal received from the bio-signal detection part, perceiving the physical and emotional state from the result of the digital signal processing, and representing the physical and emotional state. Accordingly, the apparatus can be conveniently attached to a predetermined portion of a user's body, a bio-signal transmitted wirelessly or through a wire can be easily detected, a physical and emotional state which is perceived based on the detected bio-signal can be reported to the user, and a rapidly changing emotional state or an emotional state which remains for a long time can be perceived in real time.
Owner:SAMSUNG ELECTRONICS CO LTD
Robust Feature Extraction Using Differential Zero-Crossing Countes
A low power sound recognition sensor is configured to receive an analog signal that may contain a signature sound. Sparse sound parameter information is extracted from the analog signal and compared to a sound parameter reference stored locally with the sound recognition sensor to detect when the signature sound is received in the analog signal. A portion of the sparse sound parameter information is differential zero crossing (ZC) counts. Differential ZC rate may be determined by measuring a number of times the analog signal crosses a threshold value during each of a sequence of time frames to form a sequence of ZC counts and taking a difference between selected pairs of ZC counts to form a sequence of differential ZC counts.
Owner:TEXAS INSTR INC
Power amplifier circuit with reconfigurable frequency band in multi-band wireless mobile communication system
ActiveCN101867347AReduce areaSimple structureHigh frequency amplifiersPower amplifiersMulti bandAudio power amplifier
The invention relates to a power amplifier circuit with a reconfigurable frequency band in a multi-band wireless mobile communication system, belonging to a radiofrequency integrated circuit technology and the processing field of analog signals. The power amplifier circuit comprises an input stage unit, an output stage unit, an input matching unit, an output matching unit and a bias unit, whereinthe input stage unit is respectively connected with a radiofrequency signal source and a grid of the input stage unit, the input stage unit is respectively connected with the input matching unit and the output stage unit, the output stage unit is respectively connected with the circuits of the input stage unit and the output matching unit corresponding to different resonant frequencies, the output matching unit is respectively connected with the output stage unit and a corresponding transmitting antenna, and the bias unit respectively provides bias voltage to the amplifier tubes of the input stage unit and the output stage unit. The invention can fulfill a function of power amplification of radiofrequency signals at different frequency bands in the multi-band wireless mobile communicationsystem and has the advantages of simple structure, perfect function and the like.
Owner:INST OF ELECTRONICS CHINESE ACAD OF SCI
Portable wireless electroencephalogram acquisition device
ActiveCN102512159AReduce volumeFlexible adjustmentDiagnostic recording/measuringSensorsWireless transmissionEngineering
The invention relates to a portable wireless electroencephalogram acquisition device which comprises a plurality of scalp electrodes. The scalp electrodes are connected with the input end of an electroencephalogram acquisition module and used for acquiring electroencephalogram signals; the output ends of the scalp electrodes are connected with an electroencephalogram signal extraction module; and the electroencephalogram signals processed by using the electroencephalogram signal extraction module are input into an electroencephalogram signal processing module and sent to an electroencephalogram signal receiving end in a wireless way. The volume of the front-end circuit of the traditional electroencephalogram acquisition system is greatly reduced, and the wireless electroencephalogram acquisition device is hereby portable. Due to the adoption of the wireless transmission way, the restriction of the wired electroencephalogram acquisition system to the spacial position of the tested object is eliminated. The processing of the analog signal in the traditional electroencephalogram acquisition system is converted into the processing of the digital signal, and due to the adoption of the digital signal processing method, the parameters of the electroencephalogram acquisition system can be adjusted flexibly, the electroencephalogram acquisition system can be optimized, and the cost of the electroencephalogram acquisition system can be reduced.
Owner:XI AN JIAOTONG UNIV
Transmitter To Receiver Communication Link In A Wireless Power System
InactiveUS20140162554A1Near-field transmissionCircuit arrangementsTransmitter coilTelecommunications link
A method and system for establishing a communication link in a wireless power system from a wireless power transmitter (WPT) to a wireless power receiver (WPR) is provided. A flux modulator is operably disposed in the WPT for dynamically changing the WPT's impedance so as to modulate a magnetic field produced on the transmitter coil when a primary voltage applied to the WPT. A flux demodulator is operably disposed in the WPR for receiving and demodulating a secondary voltage induced on a receiver coil due to the modulated magnetic field on the transmitter coil. The induction of the secondary voltage on the receiver coil due to the modulated magnetic field on the transmitter coil establishes the communication link from the WPT to the WPR. The flux demodulator is configured as an analog signal processing chain or a digital signal processing block for decoding information obtained from the WPT.
Owner:WIPQTUS
Modular omnidirectional bar code symbol scanning system with at least one service port for removable installation of scan module insert
InactiveUS20050103852A1Character and pattern recognitionRecord carriers used with machinesPhotodetectorEngineering
Owner:METROLOGIC INSTR INC
Multifunctional wearable human-computer interaction input equipment based on MEMS (Micro Electro Mechanical Systems) acceleration sensor
InactiveCN104834372ARealize the control functionNoveltyInput/output for user-computer interactionGraph readingState parameterEngineering
The invention discloses a multifunctional wearable human-computer interaction input equipment based on an MEMS (Micro Electro Mechanical Systems) acceleration sensor, and belongs to the field of a human-computer interaction input interface of a computer. The multifunctional wearable human-computer interaction input equipment has various computer peripheral functions including a mouse, a handle, a wheel and the like. The accelerated velocity of an induction palm in X-axis and Y-axis directions by an MMA7361 acceleration sensor; then, an analog signal output by the acceleration sensor is processed and converted into motion state parameters including the inclination gesture, the rotation angle speed, the rotation acceleration and the like of the user palm; according to a function mode (the mouse, the handle, the four-direction wheel and a self-defined keyboard) selected by an operator, a corresponding control algorithm is dynamically called to carry out analysis processing on gesture movement so as to realize different input equipment functions. The multifunctional wearable human-computer interaction input equipment can be designed into various boundary dimensions convenient to wear, a sleep awakening function is designed in a program, and the multifunctional wearable human-computer interaction input equipment is especially suitable for occasions including meetings, classrooms, exhibition rooms and has the advantages of wide application prospect and important research value.
Owner:程锦发
Full CMOS min-sum analog iterative decoders
InactiveUS20050240647A1Reduce manufacturing costSimple designDigital data processing detailsError correction/detection using multiple parity bitsMOSFETCMOS
Analog iterative decoders are provided that are based on the so-called min-sum algorithm (also referred to as max-sum or max-product, Max-Log-MAP or BP-based decoding) and can be used to decode powerful coding schemes such as low-density parity-check (LDPC) codes and turbo codes. The circuits can be implemented by standard CMOS technology, which means lower fabrication cost and / or simpler design compared to previously reported analog iterative decoders that are based on BiCMOS or sub-threshold CMOS technology. Soft information is passed among variable nodes and parity-check nodes. A low-voltage high-swing Max WTA circuit is also provided. The circuit can be implemented by short channel MOSFET transistors and yet provide a reasonably high degree of accuracy. Applications include soft computing, and analog signal processing, in general. A Min WTA circuit can also be built based on this circuit by subtracting the input currents from a large reference current.
Owner:BANIHASHEMI AMIR +1
Digitized photoelectric detector sensing circuit
InactiveCN101650223ACancel noiseReduce processing circuitryPhotometry electrical circuitsImpulse frequencySignal processing circuits
The invention discloses a digitized photoelectric detector sensing circuit provided with a plurality of signal paths. The digitized photoelectric detector sensing circuit comprises a front end sensingunit consisting of a plurality of unit circuits, a column-shared integrating circuit connected with the front end sensing unit, a high-speed and high-precision comparator connected with the column-shared integrating circuit, a delay control unit connected with the high-speed and high-precision comparator, a counter connected with the delay control unit and an output buffering stage connected withthe counter, the output buffer stage is further connected with a column selection register, the output buffering stage forms an output end, and the plurality of unit circuits are further respectivelyconnected with a row selection register, wherein each signal path comprises one unit circuit. The digitized photoelectric detector sensing circuit utilizes an analogue-digital signal conversion technology of pulse frequency coding to advance the position from the analogue-to-digital conversion so as to efficiently reduce the analogue signal processing circuit, eliminate the column fixing mode noise and the column sensing noise in the analogue signal sensing circuit and improve the sensing signal-to-noise ratio.
Owner:TIANJIN UNIV
Pool alarm system
InactiveUS20150161870A1Improving alarm triggering decisionFacilitate decision-makingAlarmsDigital dataEngineering
Pool alarm system for detecting the introduction and / or presence of a body in a liquid pool. The system includes: a first sensor for sensing audio signals generated by the body in the pool; a second sensor for sensing water pressure signals generated by the body in the pool; an analog signal processor for pre-processing the audio signals and water pressure signals and for converting them to digital data; an alarm device activated when the body was detected in the pool; a processor and control unit. The audio signals are detected and processed faster than the detection of the water pressure signal. According to the intensity of an acoustic signature originating from the audible signals an aquatic signature originating from the water pressure sensor is analyzed using an adaptable sensitivity parameter dependent on the intensity of the acoustic signature for improving alarm triggering decision.
Owner:GARTI EFRAIM
Electrode for living body and device for detecting living signal
ActiveUS20100049028A1Stable maintenanceSimple structureElectrocardiographySensorsElectricityBiological body
Owner:SAMSUNG ELECTRONICS CO LTD
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