7264results about How to "Improve battery life" patented technology

A mobile device case system includes a first case system component usable to at least partially enclose a mobile device. A second case system component is attachable to the first case component (e.g., mechanically and / or electronically) to provide additional features and functionality such as, for example, an expansion battery and / or an external display. The second case system component can be replaced with other system components to, for example, change the display, replace the battery, or provide a decorative cover for the external surface of the case system.

Route selection through a wireless mesh network between a source node and a destination node is based on minimizing generated interference in order to increase the capacity of the network. An interference energy associated with transmitting a packet over each hop in multiple routes from the source node to the destination node is determined. The interference energy for each hop is combined to generate a combined interference energy for each route. One of the routes is selected based on the combined interference energy determined for each route.

Systems and methods provide a programmable or controllable infusate delivery with minimal power consumption using controllable valves and with safe and reliable operation of the delivery system. Embodiments provide programmable control without the need for implantable power sources using multi-stable valves and / or mono-stable valves which are powered externally when activated. Embodiments provide for very low power programmable control, such as by employing micro-electromechanical system valves and a flow restrictor array. An external program controller may be utilized to provide a user interface and which may communicate with the controllable infusate delivery system using wireless links. Internal controller circuitry may provide for flow control changes for different activities or times of day and / or in response to changes in pressure, temperature, etcetera. A safety valve configuration may be implemented which provides a safety flow valve configuration which responds in an opposite manner to particular events than does a corresponding primary flow valve.

Non-aqueous alkali metal (e.g., Li) / oxygen battery cells constructed with a protected anode that minimizes anode degradation and maximizes cathode performance by enabling the use of cathode performance enhancing solvents in the catholyte have negligible self-discharge and high deliverable capacity. In particular, protected lithium-oxygen batteries with non-aqueous catholytes have this improved performance.

An energy efficient MAC protocol for a sensor network that extends the battery life of remotely located wireless nodes by employing MAC operations involving transmission of a wake-up signal with more processing gain, dynamic adjustment of a transmission rate of synchronization messages for fast time synchronization and an energy efficient neighboring node discovery technique.

An exemplary apparatus embodiment provides for controlling current supplied to solid state lighting, such as light emitting diodes. An exemplary apparatus comprises a memory adapted to store a plurality of current parameters; and a control circuit adapted to modulate an energizing cycle time period for providing a substantially constant DC average current to the solid state lighting in response to a selected current parameter of the plurality of current parameters. In an exemplary embodiment, the control circuit modulates a current provided to the solid state lighting in response to a predetermined minimum current level (IMIN) parameter and a predetermined peak current level (IP) parameter, such that the DC average current level (IO) is substantially proportional to one-half of a sum of a predetermined peak current level (“IP”) and a predetermined minimum current levelIM(IO∝IP+IMIN2).

An apparatus, method and system are provided for controlling the solid state lighting, such as LEDs. An exemplary apparatus comprises: a switch for switching electrical current through the LEDs, a current sensor; a first comparator adapted to determine when a switch electrical current has reached a first predetermined threshold; a second comparator adapted to determine when the switch electrical current has reached a predetermined average current level; and a controller. The controller is adapted to turn the switch into an on state and an off state, to determine a first on time period as a duration between either a detection of a second predetermined current threshold or the turning the switch into the on state, and the detection of the predetermined average current level; to determine a second on time period as a duration between the detection of the predetermined average current level and the detection of the first predetermined current threshold; and to determine an on time period of the switch as substantially proportional to a sum of the first on time period and the second on time period. Additional exemplary embodiments utilize a difference between the first and second on time periods to generate an error signal to adjust the on time period of the switch.

The present invention relates to a system and method of viewing pairs of perspective images of 3-D objects (i.e. stereoscopic image pairs) displayed from a CRT display surface in a time-multiplexed or field-sequential manner, and more particularly to a universal method of generating control signals for synchronously changing the optical state of liquid crystal (LC) shutter panels through which the time-multiplexed perspective. images can be sequentially viewed in a substantially flicker-free manner by the left and right eyes of a human viewer, independent of whether the images are displayed on NTSC, PAL, VGA or SVGA styled CRT display devices.

The invention provides a system for measuring respiratory rate (RR) from a patient. The system includes an impedance pneumography (IP) sensor, connected to at least two electrodes, and a processing system that receives and processes signals from the electrodes to measure an IP signal. A motion sensor (e.g. an accelerometer) measures at least one motion signal (e.g. an ACC waveform) describing movement of a portion of the patient's body to which it is attached. The processing system receives the IP and motion signals, and processes them to determine, respectfully, frequency-domain IP and motion spectra. Both spectra are then collectively processed to remove motion components from the IP spectrum and determine RR. For example, during the processing, an algorithm determines motion frequency components from the frequency-domain motion spectrum, and then using a digital filter removes these, or parameters calculated therefrom, from the IP spectrum.

An adapter for permitting a medical diagnostic instrument having an illumination source including at least one LED (light emitting diode) to be used with a power supply normally configured for use with a diagnostic instrument having at least one incandescent lamp as an illumination source. The adapter includes circuitry for compensating LED specific characteristics for permitting the power supply to be used with the LED.

Exemplary embodiments of the invention provide a system, apparatus, and method of controlling an intensity and spectrum of light emitted from a solid state lighting system. The solid state lighting has a first emitted spectrum at full intensity and at a selected temperature, with a first electrical biasing for the solid state lighting producing a first wavelength shift, and a second electrical biasing for the solid state lighting producing a second, opposing wavelength shift. Exemplary embodiments provide for receiving information designating a selected intensity level or a selected temperature; and providing a combined first electrical biasing and second electrical biasing to the solid state lighting to generate emitted light having the selected intensity level and having a second emitted spectrum within a predetermined variance of the first emitted spectrum over a predetermined range of temperatures.

An apparatus, method and system are provided for controlling the solid state lighting, such as LEDs. An exemplary apparatus comprises: a switch for switching electrical current through the LEDs, a current sensor; a first comparator adapted to determine when a switch electrical current has reached a first predetermined threshold; a second comparator adapted to determine when the switch electrical current has reached a predetermined average current level; and a controller. The controller is adapted to turn the switch into an on state and an off state, to determine a first on time period as a duration between either a detection of a second predetermined current threshold or the turning the switch into the on state, and the detection of the predetermined average current level; to determine a second on time period as a duration between the detection of the predetermined average current level and the detection of the first predetermined current threshold; and to determine an on time period of the switch as substantially proportional to a sum of the first on time period and the second on time period. Additional exemplary embodiments utilize a difference between the first and second on time periods to generate an error signal to adjust the on time period of the switch.

Exemplary embodiments of the invention provide a system, apparatus, and method of controlling an intensity and spectrum of light emitted from a solid state lighting system. The solid state lighting has a first emitted spectrum at full intensity and at a selected temperature, with a first electrical biasing for the solid state lighting producing a first wavelength shift, and a second electrical biasing for the solid state lighting producing a second, opposing wavelength shift. Exemplary embodiments provide for receiving information designating a selected intensity level or a selected temperature; and providing a combined first electrical biasing and second electrical biasing to the solid state lighting to generate emitted light having the selected intensity level and having a second emitted spectrum within a predetermined variance of the first emitted spectrum over a predetermined range of temperatures.

A work site monitoring and employee time tracking system that includes a work site Internet connection having a broadband modem in communication with a router for transporting data to and from the work site and a work site IP camera in communication with the router for transporting images from the work site to client computers in communication with the Internet. A biometric fingerprint scanner for identifying and clocking-in and clocking-out work site workers is also included. The biometric scanner is in communication with the router for transmitting identification, clock-in and clock-out data to a server computer in communication with the Internet.

An OLED device comprises a cathode, an anode, a light emitting layer, and on the cathode side of said emitting layer, a further layer containing a) a first compound that has the lowest LUMO value of the compounds in the layer, in an amount greater than or equal to 10% by volume and less than 100% by volume of the layer; b) at least one second compound exhibiting a higher LUMO value than the first compound, where at least one of the second compounds is a low voltage electron transport material, the total amount of such second compounds(s) is less than or equal to 90% by volume of the layer; and c) a metallic material based on a metal having a work function less than 4.2 eV.

A retrofit system for converting a hybrid vehicle to a plug-in hybrid comprises a battery for storing a charge sufficient to provide a vehicle with an electric-only driving range in excess of 5 miles, a battery management system for monitoring battery parameters indicative of the state of battery charge to produce a signal indicative thereof; and a control unit responsive the battery management system to report an inflated state of battery charge to the hybrid vehicle's hybrid control system to maintain the gasoline engine in a deactivated condition over an extended driving range.

This invention provides a device, and method and system for its use, for monitoring participants in clinical trials so that participant self-reporting, which is known to be notoriously inaccurate, can be minimized or eliminated. In preferred embodiments, the device is self-contained and self-powered, resides on or in a body cavity of the participant, collects data monitoring medically relevant aspects of the participant's behavior and of the local device environment, and stores data in a memory on-board the device. An accompanying external station reads stored data and prepares it for use. Devices may include electrically-active sensors and non-electrical active sampling sensors. A preferred embodiment of the device is in clinical trials of microbicides inhibiting transmission of the HIV virus.

The invention relates to an intelligentized multi-loop thermal management system of an electric automobile. The intelligentized multi-loop thermal management system comprises a power battery pack, a driving motor, a motor controller, a vehicle-mounted electric-charger, a DC / DC transducer, a battery radiator, a battery refrigerator, a motor radiator, a motor water pump, a motor oil pump, an expansion water tank, a PTC heater, a heat exchanger, a motor compressor, a condenser, a liquid storage drying kettle, an evaporator, a electric expansion valve and a heater core body. By interconnection between a direct-through valve, a three-direction valve and a four-way valve, a plurality of heat management controlling circuit is formed. Compare with the existing technology, the intelligentized multi-loop thermal management system forms a plurality of circuits which can meet different cooling or heating requirements. According to the power battery pack of the electric automobile, a electric-driving module and air-condition character and working status of passenger compartments, the circuits are selectively opened or closed, temperature balancing and high-efficiency run of the electric automobile are guaranteed, system energy is saved significantly, endurance mileage of the electric automobile is prolonged, and economy of automobiles is improved.

The invention relates to an external skeleton assisting robot, in particular to a portable energy-storage type external skeleton assisting robot. The problems that an existing lower limb external skeleton assisting robot worn on the human body is poor in assisting effect so that the loading capacity of the human body can be reduced, the wearing comfort for the human body is poor, the universality is poor, and the field environmental suitability is poor are solved. The portable energy-storage type external skeleton assisting robot comprises the upper body back, the left leg and the right leg, and the left leg and the right leg respectively comprise a hip driving system, a thigh driving system and a shank wearing system. A hip joint energy-storage mechanism comprises a connecting base, a stretching rod, a second spring and a stopping sheet, and a first bevel gear is meshed with a second bevel gear. Each hip driving system comprises a second motor with a coder, a second reducer, a third bevel gear, a fourth bevel gear, a thigh connecting rod, a knee joint support, a knee joint connecting plate, an angle sensor, a series connection elastic combination body, a knee joint gearbox body, a knee joint shaft and an end cover. The portable energy-storage type external skeleton assisting robot is suitable for being worn outdoors for walking assisting.

An embodiment of the invention provides a method and a device for clearing malicious power consumption applications, and a user terminal. Background work power consumption of applications running in the user terminal is periodically counted, the applications with the background work power consumption not lower than a power consumption threshold value are determined as the malicious power consumption applications, wake lock holding time of each application running in the user terminal with a screen closed is periodically counted, if a certain application with the holding time not shorter than a set time threshold value is a background work application, the application is determined as a malicious power consumption application unreasonably occupying resources in background, the applications with high power consumption but normally used by a user are not malicious power consumption applications, the malicious power consumption applications can be accurately positioned and detected, unnecessary power consumption of the user terminal is avoided while usage experience of the user is ensured, electric energy is saved, and the battery life of the user terminal is prolonged to a certain degree.

Well logging apparatus and methods for determining formation resistivity at multiple (>3) depths of investigation. At least one transmitter antenna and at least two receiver antennas are mounted in a logging tool housing, on substantially a common axis. The antennas are untuned coils of wire. Electromagnetic energy is emitted at multiple frequencies from the transmitter into the formation. The receiver antennas, which are spaced apart from each other and from the transmitter, detect reflected electromagnetic energy. Formation resistivity at multiple depths of investigation is determined using only phase differences in the reflected energy at the different frequencies, minimizing false indications of invasion due to mismatch of vertical response with attenuation measurements and also permitting correcting for the effects of varying dielectric constant of the formation. The apparatus minimizes the number of antennas, electronics complexity, required power, and measurement time required to determine resistivity at multiple depths of investigation.

The invention provides a system for measuring respiratory rate (RR) from a patient. The system includes an impedance pneumography (IP) sensor, connected to at least two electrodes, and a processing system that receives and processes signals from the electrodes to measure an IP signal. A motion sensor (e.g. an accelerometer) measures at least one motion signal (e.g. an ACC waveform) describing movement of a portion of the patient's body to which it is attached. The processing system receives the IP and motion signals, and processes them to determine, respectfully, frequency-domain IP and motion spectra. Both spectra are then collectively processed to remove motion components from the IP spectrum and determine RR. For example, during the processing, an algorithm determines motion frequency components from the frequency-domain motion spectrum, and then using a digital filter removes these, or parameters calculated therefrom, from the IP spectrum.

A vaporizing reservoir including a containment vessel having a first shaft port exposed to ambient and one or more sidewalls defining a body portion having an interior cavity and a vaporizing portion communicated to the interior cavity; an inductive coil disposed within the vaporizing portion, the inductive coil electrically disconnected outside of the containment vessel and configured for inductive heating; and an air shaft communicated to the vaporizing portion and extending to the first shaft port. Fluid or solid material may be present in the interior cavity for vaporization. For fluid material, a wick may be included with the inductive coil to facilitate communication of the material to the inductive coil. An exterior inductive coil heats the inductive coil within the vaporizing portion and vaporizes the material communicated to the interior inductive coil. Vapor from the heated interior inductive coil is extracted through the air shaft.

A positioning operation is performed to acquire a positioning result immediately before or immediately after a photographing instruction is given. GPS positioning is performed in response to a positioning start instruction (half depression of the shutter), after which the photographing instruction is issued. GPS positioning and photographing are carried out in order when an operation (full depression of the shutter) serves as both the photographing instruction and the positioning start instruction. When power is on, positioning is performed once and positioning information is held and stored in a saving memory in association with positioning information carried on a photographed image. Alternatively, photographing is performed first and when a power OFF switch is operated after the photographing operation is completed, positioning is performed and positioning information is stored in the saving memory in association with each photographed image. Immediately before series photographing is initiated, GPS positioning is performed and a positioning result is held, and after series photographing is finished, the positioning result is stored in a temporary memory in association with each of serially photographed images stored.

A chip (1) includes: a resource manager (2); various kinds of functional blocks (3-6); a thermal sensor (13); and a performance counter (15). The resource manager manages tasks that the functional blocks execute, and determines a task progress (38) for each task from an activated ratio (α) provided from the performance counter and a deadline (39) contained in task information (33) and decides priority of each task. When the temperature detected by the thermal sensor during execution of a task is not less than a threshold (T_max), the resource manager reads out a power consumption budget (P_max) from a memory (9) which has been set to make the temperature below the threshold, and stops the clock fed to the functional block executing a task having a lower priority or lowers the frequency of the clock until a chip power consumption value (p_sum) becomes smaller than the power consumption budget.

Frequency translation and applications of the same are described herein, including RF modem and wireless local area network (WLAN) applications. In embodiments, the WLAN invention includes an antenna, an LNA / PA module, a receiver, a transmitter, a control signal generator, a demodulation / modulation facilitation module, and a MAC interface. The WLAN receiver includes at least one universal frequency translation module that frequency down-converts a received EM signal. In embodiments, the UFT based receiver is configured in a multi-phase embodiment to reduce or eliminate re-radiation that is caused by DC offset. The WLAN transmitter includes at least one universal frequency translation module that frequency up-converts a baseband signal in preparation for transmission over the wireless LAN. In embodiments, the UFT based transmitter is configured in a differential and multi-phase embodiment to reduce carrier insertion and spectral growth.

The invention relates to a radiating and cooling device for a power battery. An aluminum hollow cold plate shell is in the form of a radiating fin; the inside of the shell is hollow; a plurality of groove spaces are formed on the aluminum shell; power batteries can be embedded into grooves; the aluminum hollow cold plate shell is filled with a phase change material; radiating fins are arranged on an aluminum hollow cold plate shell bottom plate; a snakelike copper tube is arranged at the bottom of an aluminum shell cavity, and is contacted with the phase change material; a liquid cooling working medium is introduced into the snakelike copper tube; the snakelike copper tube, a pump and an external heat exchanger are connected in series, so that an active liquid cooling system is formed; a temperature sensor is arranged on the surface of the power battery; and a temperature switch is connected in series with a pump body power supply. The flow of the cooling working medium can be adjusted according to different requirements of battery temperature control; the using amount of a metal is reduced by adding the phase change material on the premise of ensuring the battery radiating effect, so that the cost of a battery radiating device is reduced effectively; and the requirements of different power batteries are met.

Frequency translation and applications of the same are described herein, including RF modem and wireless local area network (WLAN) applications. In embodiments, the WLAN invention includes an antenna, an LNA / PA module, a receiver, a transmitter, a control signal generator, a demodulation / modulation facilitation module, and a MAC interface. The WLAN receiver includes at least one universal frequency translation module that frequency down-converts a received EM signal. In embodiments, the UFT based receiver is configured in a multi-phase embodiment to reduce or eliminate re-radiation that is caused by DC offset. The WLAN transmitter includes at least one universal frequency translation module that frequency up-converts a baseband signal in preparation for transmission over the wireless LAN. In embodiments, the UFT based transmitter is configured in a differential and multi-phase embodiment to reduce carrier insertion and spectral growth.