343results about How to "Low power" patented technology

A method of designing a low power circuit that implements specified functionality, the method including: analyzing code for an algorithmic description of the specified functionality to generate a design representation of the circuit at the algorithmic level; instrumenting the code for the algorithmic description so as to capture data streams during execution/simulation of the algorithmic description; executing/simulating the instrumented code to generate an activity profile for the algorithmic description, wherein said activity profile includes at least portions of data traces of at least a portion of the executed algorithmic description; using the design representation to generate an initial hardware design that is an estimate of hardware resources necessary to implement at least some of the specified functionality; and computing power consumption for the initial hardware design based on the activity profile and power models for the hardware resources.

A trace detection system includes at least two stages coupled to operate in series. An ion mobility spectrometer (IMS) stage has a sampling inlet to receive a sample to be analyzed. An ion source ionizes the sample. The IMS applies an electrical field to the ionized sample to move the ionized sample toward an IMS outlet. A differential mobility spectrometer (DMS) stage coupled in series with the IMS stage receives the ionized sample from the IMS stage. Preferably, the system includes a mass spectrometer (MS) stage coupled in series with the DMS stage to receive the ionized sample from the DMS stage via a vacuum interface. A roughing vacuum pump evacuates a first stage of the MS stage to a first pressure below atmospheric pressure. A high vacuum pump evacuates a second stage of the MS stage to a second pressure below the first pressure.

A phase-locked loop (PLL) achieves initial lock using a course fractional-N divider driving a binary phase detector. Once frequency lock is achieved, this divider may be turned off, while an adaptive phase detector takes over control of the PLL front end. The adaptive phase detector (APD) receives input directly from the VCO and the reference clock, deriving digital control signals and a precision phase detector output. The APD operates at the update rate, generating a digital delta sigma modulator (DSM) data stream output at the update rate. The APD automatically locks to a digitally generated ramp corresponding to an expected difference between the VCO output and the reference clock, while adaptively correcting for DC errors and ramp cancellation errors.

A process for operating the brake arrangement of a vehicle is presented, which comprises an electrically controllable service brake system, which is set to generate brake forces independently of driver actuation, and which comprises an electrically controllable parking brake system, which is set to generate brake forces and maintain these forces. So that the parking brake system or its electromechanical actuating unit only needs to cope with relatively small load situations, it is proposed that, when, for certain operating conditions, the parking brake system has to maintain brake forces which are greater than the brake forces it is able to generate itself, the service brake system generates the additionally required brake forces.

The invention is a detection system comprising inexpensive, miniaturized sensors for detecting electric field (E-field) disturbances. Such sensors are easily and covertly deployable and have low power consumption. The devices may incorporate visual or audio alerts and can include communications hardware for transmitting data for further processing of the electrostatic events.

A method for power gating a core by a SoC is provided. Instruction Pointer information, state of the core, core access information and wake up latency information of the core are used in power gating or un-gating of the core. A change in state of the core is detected by a device driver and is provided to a power management unit. As the state of the core changes from active to passive, the wake up latency information and the core access information of the core are retrieved by the SoC from a database to perform either the power gating or the un-gating of the core. The database is prepared by analyzing code blocks statically.

A remotely managed electronically operated dispensing apparatus having a transmitter for transmitting a detection signal and a communication signal is disclosed. When the detection signal is reflected from an object, the dispensing apparatus opens a valve allowing fluid to flow. The communication signal may contain maintenance, status and other information and is received by a communication device.

The invention discloses a hybrid car driving system which comprises a driving motor operating mode switching device, and belongs to the technical field of vehicle engineering, wherein, an engine is connected with an integral start generator coaxially; the integral start generator is connected with a first automatic clutch driving disc; a first automatic clutch driven disc is connected with a planetary gear mechanism by a driving motor; one side of the planetary gear mechanism is connected with the driving motor by a second automatic clutch, and the other side thereof is connected with a main reducer-differential mechanism; the main reducer-differential mechanism is connected with wheels by a driving axle; a power battery pack is respectively connected with a motor controller and an external power supply plug by cables; and the motor controller is respectively connected with the integral start generator and the driving motor by the cables. An outer gear ring of the planetary gear mechanism is connected with a frame fixedly. The hybrid car driving system reserves the traditional vehicle structure to a maximum extent and optimizes the working point of the engine by using double motors, thus leading the engine to operating stably in a high-efficiency and low-discharge area, simultaneously optimizing the working condition of the driving motor and prolonging the service life of the motor.

Disclosed herein is an apparatus and method for low power local area communication using event signal control. The low power local area communication apparatus includes at least one coordinator and a plurality of network device. The network coordinator transmits a periodic beacon signal based on the preset beacon period of a superframe and a continuous RF event signal, receives a first signal including a Service Set Identifier (SSID) and a second signal including the SSID and an event detection code, and performs the transmission or reception of data when authentication has been completed. Each of the network devices generates and transmits the first and second signals, performs the transmission and reception of data after authentication has been completed, and is thereafter switched to power saving mode or OFF mode. Accordingly, the construction of the system is simplified, and the cost of the system is reduced.

Solid state image sensors, and methods of operation thereof, includes an array of photosensitive pixels arranged in rows and columns and in which pixel data signals are read out from the pixels via column circuits, which introduces column fixed pattern noise to the signals. The signals are selectively inverted at the inputs to the column circuits and the inversion is reversed following output from the column circuits. Each column circuit may include an analog-to-digital converter and a digital inverter for inverting digital output therefrom. The selective inversion may be applied to alternate rows or groups of rows of the pixel data, and may be applied differently to different frames of the pixel data. These techniques result in column fixed pattern noise being modulated in a manner which makes the noise less apparent to the eye, and which facilitates subsequent cancellation of the noise.

The invention relates to a system for grouping and pre-charging modular a multilevel converter capacitor. The system comprises at least one modular multilevel converter MMC; an alternating-current side input end of the modular multilevel converter MMC is connected with a series-connected starting current-limiting resistor Rx, a breaker RBK1 (Remote Breaker) and an alternating-current power supply in turn; or the system comprises two modular multilevel converters MMCs which respectively are a first modular multilevel converter MMC1 and a second modular multilevel converter MMC2. A method for grouping and pre-charging the modular multilevel converter capacitor comprises the following steps of: respectively dividing half-bridge sub-modules of two modular multilevel converters MMCs into two groups and four groups, and carrying out grouping and pre-charging. According to the method for grouping and pre-charging the modular multilevel converter capacitor, the pre-charging of a capacitor is shortened, and the power consumption of the current-limiting resistor is reduced; the charging current direction is unnecessary to be detected, and the capacitor voltage closed-loop control is unnecessary as well; and the implementation is simple, and the control is simple.

An amplifying circuit includes an n-type transistor having a source, a gate coupled to a first bias voltage, and a drain coupled to a first supply voltage through a first impedance circuit. A p-type transistor of the circuit has a source coupled to the source of the n-type transistor, a gate coupled to a second bias voltage, and a drain coupled to a second supply voltage through a second impedance circuit. A first differential input is coupled to the gate of the n-type transistor through a first capacitor and to the gate of the p-type transistor through a second capacitor. A second differential input is coupled to the sources of the n-type and the p-type transistors. A third capacitor has a first end coupled to the drain of the n-type transistor, and a fourth capacitor has a first end coupled to the drain of the p-type transistor and a second end coupled to a second end of the third capacitor. An output of the amplifier circuit is provided at the second ends of the third and the fourth capacitors. The n-type transistor and the first impedance circuit serve as a common-source amplifier for a signal at the first differential input and as a common-gate amplifier for the signal at the second differential input. Similarly, the p-type transistor and the second impedance circuit serve as a common-source amplifier for the signal at the first differential input and as a common-gate amplifier for the signal at the second differential input.

A system and a method of operating imaging sensors in a lower power manner. In one illustrative embodiment, an image sensor system includes a sensor controller coupled to a sensor array. The sensor controller may have a higher power state that is active when reading the sensor array and a lower power state that is active between read operations. The sensor controller may read the sensor array at a reduced frame rate until movement or activity is detected in the scene, and then the sensor controller may read the sensor array at an increased frame rate for higher frame resolution. In some cases, less than all of the pixels in the sensor array may be read at some times to reduce power consumption, and more or all of the pixels may be read at other times to provide higher resolution.

An optical interconnect system having a first optical sub-system and a second optical sub-system, each optical sub-system having a first end and a second end, and further having a preselected length, and a preselected width. Means are fixedly secured to the first end of the optical sub-system for emitting electromagnetic radiation and means are fixedly secured to said second end of said optical sub-system for receiving the emitted electromagnetic radiation.

Provided is a low-power wake-up receiver that is sensitive to electric waves, by which power consumed by a radio frequency (RF) transceiver of a sensor node in a ubiquitous sensor network (USN) is minimized. A wake-up receiver waking up a main transceiver includes a duty cycle signal generation unit controlling a duty cycle of a duty cycle signal; a burst signal detection unit receiving an input signal including a burst signal and a data signal based on the duty cycle signal, amplifying the input signal, and, if the amplified input signal is the burst signal, outputting a control signal; and a data signal detection unit re-amplifying the amplified input signal based on the control signal, and, if the re-amplified input signal is the data signal, outputting a wake-up signal. Power supplied to the duty cycle signal generation unit is interrupted based on the control signal and power is re-supplied to the duty cycle signal generation unit based on the wake-up signal.

A nonvolatile memory device including one resistor and one transistor. The resistor may correspond to a resistance layer electrically connected to a first impurity region and a second impurity region of the transistor.

A mobile spray dispenser comprises a fluid circulation system and a heating unit. The fluid circulation system has a motorized pump capable of circulating fluid from a fluid reservoir in a high-pressure spray mode and a low-pressure recirculation mode, and of providing the fluid to a sprayer. The motorized pump draws lower power in the low-pressure recirculation mode than in the high-pressure spray mode. The heating unit is disposed within the fluid circulation system to heat the fluid to a target temperature, and comprises a primary heater and a boost heater. The primary heater is configured to be active during both the high-pressure spray mode and the low-pressure recirculation mode. The boost heater is in fluid series with the primary heater, and is configured to be active only during the low-pressure recirculation mode.

The invention discloses a wavelength alignment method. The method comprises as follow: optical line terminal OLT receives optical signal from optical network unit ONU, then detects the power of at least a part of the optical signal and determines the required adjustment value of the optical signal wavelength which is generated by the ONU according to the power of the optical signal; the OLT sends a instruction which contains the adjustment value to the ONU; after the instruction is received, the ONU adjusts the wavelength according to the adjustment value. The invention also discloses a wavelength alignment system and an optical network unit. By adopting the invention, the OLT sends the instruction to the ONU and control the ONU to adjust the wavelength, thus the wavelength mismatch between the ONU wavelength and the wavelength division multiplexing channel, which is caused by environmental temperature change and poor temperature control performance, is solved. The power is induced and the system stability is improved.

An induction-friction welding method includes such steps as heating the interfaces to be welded by induction coil, making relative friction between two workpieces to be welded to remove oxide layer obstructing welding, and further axially pressing both workpieces so to form welded joint. Its advantages are high efficiency, and broad spectrum.

Provided are a differential voltage-controlled oscillator (VCO) and a quadrature VCO using center-tapped cross-coupling of a transformer. The differential VCO and the quadrature VCO can be driven by low power through a current reuse structure and have an excellent phase noise characteristic by center-tapped cross-coupling through a transformer. Further, variable capacitance units for frequency variation are divided into variable capacitance units for coarse tuning and variable capacitance units for fine tuning. Therefore, it is possible to obtain a wide tuning range while voltage oscillation gain is reduced. Further, the differential VCO and the quadrature VCO are configured in such a manner that the respective variable capacitance units operate linearly throughout the entire capacitance region due to control voltage distribution by resistors. Accordingly, it is possible to obtain a linear control voltage-oscillation frequency characteristic. The quadrature VCO according to the present invention can output four-phase quadrature signals while having an excellent phase noise characteristic, without substrate loss and current consumption caused by the switching transistors.

A PCB subsystem of IC parts is proposed. The PCB assembly contains single or plural of chips, each contains Giga Byte storage and 10 k gate equivalent Schottky CMOS (SCMOS) based field programmable gate arrays (SFPGA). The process technology combines CMOS transistors, EEPROM transistors, and low barrier Schottky diodes. The circuit architecture mixes both hardwired and SFPGA functional units. System interface architecture is based on simple low speed host interface, medium speed local peripheral bus, and high-speed on-chip bus. 1.2V supply low power, high capacity, and high flexibility IC product applications are supported. Efficient system integrations prescribe chip implementations with a distributive computing power running with GHz, 100 MHz, and 10 MHz clock rates at various interfaces. Universal chip and OS supports high bandwidth data access, transport, and storage operations with re-configurable circuit units and special nets.

The low power image sensor includes: an image sensing unit which senses light from an object, converts the light into an electric signal, and outputs the electric signal; a comparing unit which receives an electric signal from the image sensor, compares a voltage level of the electric signal with a reference voltage, and outputs an image signal as a 1 bit signal per pixel; and an effective image adjuster which compares bit value distribution of an image signal output from the comperator with a preset effective range, and adjusts the effective image to output an effective image. Further, an optical pointing device includes: an image sensor which senses light from an object and outputs an image signal; and a motion computing unit which receives the image signal and compares before and after images to calculate a motion vector.

A signal intercept and analysis processor for a wideband intercept receiver system including at least one wideband receiver has a signal detector operatively connectable to the wideband receiver and a signal extractor operatively connected to the signal detector and connectable to the wideband receiver for performing signal extraction directly on a wideband signal output of the receiver and for performing the signal extraction only upon detection of a signal by the signal detector. The signal detector includes a generator of a coarsely sampled or decimated time-frequency representation of the wideband signal output. The time-frequency representation is decimated or coarsely sampled in time compared to an inverse frequency filter bandwidth used in the time-frequency representation. The generator preferably includes a digital filter bank. The digital filter bank in turn may include means for performing a sequence of windowed FFTs on samples of the wideband signal output, wherein a stride between consecutive one of the FFTs is considerably larger than a length of each of the FFTs.

The invention provides an air-conditioner control system and a control method thereof; the air-conditioner comprises a low output running mode with relatively low output energy and a high output running mode with relatively high output energy; the air conditioner can be mutually switched between two running modes, and the control system comprises a detecting unit, a judging unit, and a control unit. The detecting unit is used for detecting an inner ring of indoor environment temperature T; the judging unit is used for calculating the inner ring-T setting I of delta T=IT, and judging if delta T is not more than T1, wherein T is set as the indoor setting temperature of the air conditioner, T 1 is setting value and any positive number; the control unit can run the air condition in low output running mode or high output running mode according to the judging result of the judging unit. Through the invention, the room temperature can slowly change when closing to the T setting scale, prevent exceeding the setting temperature for too fast drop or rise of room temperature, avoid frequent startup of compressor, effectively prevent fluctuation of indoor environment temperature, and improve the comfort level of the indoor environment.

A keyless access sensor system for use with a keyless access control mechanism (KACM) is described for controlling the operation of a locking device. The KACM receives a signal from a sensor device for keyless access to create a first output signal before the user has begun any action on the handle in order to open the door. The first output signal is sent to a general processor, which initiates a recognition process and, after recognition of the authorized user the processor then generates an unlocking signal which unlocks the locking device before the authorized user will have fully accomplished the action of opening the door. Thus the authorized user is allowed to open the door without any specific un-ergonomic and time-consuming additional action to the simple action of actuating the handle to open the door. The second signal is generated by a device, such as a fob, card or the like, carrying a unique digital or analog identification in response to RF or IR interrogation from the general processor after it receives the output signal from the sensor device for keyless access.

A micro electromechanical system (MEMS) switch and a method for manufacturing the same are provided. The MEMS switch includes a substrate; signal lines formed on the substrate; main electrodes spaced apart by a distance and formed over the substrate; an actuating beam installed above the main electrodes at a certain height; a support unit to support the actuating beam; and sub-electrodes formed above the actuating beam at a distance from the actuating beam and facing the corresponding main electrodes. The method includes depositing and patterning a metal layer on a substrate; depositing and patterning a sacrificial layer to form actuator beam support holes and first sub-electrode contact holes; depositing and patterning an actuating beam layer on the sacrificial layer, thereby forming spacers; depositing and patterning second sub-electrode contact holes from another sacrificial layer; depositing and patterning a sub-electrode layer on the sacrificial layer; and removing the two sacrificial layers.

A double-layer grating structure for efficient retroreflection of incident radiation and efficient transmission of the undiffracted incident radiation is disclosed. The grating is constructed of two spaced-apart layers of periodically arranged metal stripes, wherein the stripes in one layer overlap with gaps between the stripes in the second layer. The layers are encapsulated with a dielectric material. A method for producing such grating is also described.

The invention discloses a trawl net with a plurality of parallel bag sets and catching method thereby. The trawl net comprises a wing, a body and a net bag. The net bag comprises a frame and a plurality of bags stacked on the frame in parallel. The frame is provided with a bag entry opening-closing device, a bag removal device and a controller. The trawl net with the net bag composed of multiple net bags stacked in parallel has the advantages that catches obtained with the trawl net can be collected into the corresponding net bag in batches and timely removed from the body to be lifted to a fish boat along with the net bags, the problem that the catches are squeezed and scratched, or die and even deteriorate due to long-term trawling is solved, survival rate of the catches is increased, freshness of the catches is improved, and owing to fractional extraction and light weight of the net bags, chances of the fish boat being tangled are slimmed.

A phase locked loop circuit in accordance with an embodiment implements a digital phase delay quantizer to replace the analog charge-pump and phase frequency detector in an analog PLL circuit. Therefore, the built-in loop filter can be a compact-sized, high order, high bandwidth, and high attenuation digital filter as well. The digital PLL circuit takes advantage of the deep sub-micron process technology which features high speed, high resolution, compact size, and low power.

The invention discloses a novel three-axle swinging platform. The novel three-axle swinging platform can provide a three-freedom-degree swinging movement environment and mainly comprises a base, inner, middle and outer frames, inner, middle and outer axle systems, inner, middle and outer frame swinging rods, inner, middle and outer ball screws, inner, middle and outer stepping motors, inner, middle and outer frame connecting hinges and inner, middle and outer frame inserting pins. When movement-instruction pulse signals transmitted from an industrial control machine is received by the motors, the motors rotate forwards and reversely, the forward-reverse rotary movement of the motors is transformed into reciprocating linear movement by the ball screws, and the frames are pushed by the swinging rods, so that the swinging movement of the three frames of a rotary platform is realized. The novel three-axle swinging platform disclosed by the invention has the advantages that a transmission system is arranged outside the frames, the ball screws are used as moving parts of the transmission system, so that not only is the power of driving motors reduced by utilizing the transmission ratio, and the volume of a platform body is greatly reduced, but also the problems of transmission gaps, noise and efficiency loss and the like of the reciprocating movement are solved.