1428results about How to "Low heat generation" patented technology

Methods and apparatuses to manage working states of a data processing system. At least one embodiment of the present invention includes a data processing system with one or more sensors (e.g., physical sensors such as tachometer and thermistors, and logical sensors such as CPU load) for fine grain control of one or more components (e.g., processor, fan, hard drive, optical drive) of the system for working conditions that balance various goals (e.g., user preferences, performance, power consumption, thermal constraints, acoustic noise). In one example, the clock frequency and core voltage for a processor are actively managed to balance performance and power consumption (heat generation) without a significant latency. In one example, the speed of a cooling fan is actively managed to balance cooling effort and noise (and/or power consumption).

Ultrasonic waveguides having improved velocity gain are disclosed for use in ultrasonic medical devices. Specifically, the ultrasonic waveguides comprises a first material having a higher acoustic impedance and a second material having a lower acoustic impedance.

A method is disclosed for controlling operation of an engine coupled to an exhaust treatment catalyst. Under predetermined conditions, the method operates an engine with a first group of cylinders combusting a lean air/fuel mixture and a second group of cylinders pumping air only (i.e., without fuel injection). In addition, the engine control method also provides the following features in combination with the above-described split air/lean mode: idle speed control, sensor diagnostics, air/fuel ratio control, adaptive learning, fuel vapor purging, catalyst temperature estimation, default operation, and exhaust gas and emission control device temperature control. In addition, the engine control method also changes to combusting in all cylinders under preselected operating conditions such as fuel vapor purging, manifold vacuum control, and purging of stored oxidants in an emission control device.

A connector includes a housing forming at least one receptacle and a terminal received in each receptacle. The housing has upper and lower faces in which opposite slots are defined. Through holes are defined in the slots and extending to the receptacle. The terminal has an engagement section, a retention section extending from the engagement section, an extension section extending from the retention section and opposite to the engagement section and a wire engaging section projecting from the extension section. The engagement section includes a plurality of circumferentially spaced resilient leaves forming a cylinder axially aligned with the holes defined in the upper and lower faces of the housing. Thus, when a pin of a mating connector is fit into the cylinder of the engagement section through either one of the holes of the housing, the pin is completely surrounded by the leaves and a large contact area is formed between the pin and the engagement section. Due to the resiliency of the leaves, only a low insertion force is needed in completing insertion of the pin into the engagement section. Firm engagement, low impedance and low noise, as well as reduced heat generation, can be realized between the pin and the engagement section.

An ophthalmologic cutting device having a base support section for attachment with a movement generating device and a tip with a blade section. The blade section preferably has upper and lower edges, and a forward aspiration free edge extending between them, with the upper edge having a shorter longitudinal length compared with the lower edge and where the forward edge slopes down from a distal end of the upper edge to a distal end of the lower edge, and the lower edge presenting a material contact surface that is thinner in thickness than the upper edge. A slope back in the proximal direction of the forward edge of, for example, 10 to 45 degrees with a straight and/or curving forward edge or a combination of a straight and forward edge sections is preferred. Embodiments of the blade include a blade converging in thickness from top to bottom and one having a curved upper forward edge region and one with a lower edge that has a distal straight section and a recessed section positioned proximal of said distal straight section. The forward edge is also preferably defined by longitudinally diverging, opposing side walls.

The AC output from a source is rectified and applied to a resistor/Zener diode circuit connection which determines the magnitude of the rectified voltage applied via a circuit to a first MOSFET device. The inverted output of the first MOSFET device is applied to the gate electrode of a second MOSFET device in a manner such that the second MOSFET device is ON even when the AC output passes through zero. The output of the second MOSFET device is connected to a resistor which determines the magnitude of the load applied to the dimmer.

A non-contact infrared (IR) thermometer for measuring temperature from the surface of an object includes an IR radiation sensor attached to a heating element and a thermal shield having an interior surface positioned within the sensor's field of view that has a high emissivity. An electronic circuit controlling the heating element maintains the temperatures of the sensor and shield substantially close to an anticipated surface temperature of the object. The IR radiation sensor is further thermally coupled to a reference temperature sensor. An optical system positioned in front of the shield focuses thermal radiation from the object on the surface of the sensor, while the shield prevents stray radiation from reaching the sensor. Signals from the IR and reference sensors are used to calculate the object's surface temperature.

A system and method for transferring heat from a terminal in a mobile communication system. The system comprises a circuit board mounted to a terminal body, in which a heat generating component is mounted, and a shield frame for shielding electromagnetic waves generated from the circuit board and supporting the circuit board. At least one heat radiating apparatus is installed between the heat generating component and the shield frame. The at least one heat radiating apparatus transfers heat generated by the heat generating component away from the circuit board and substantially directly to the shield frame. The heat transfer prevents an impact of the generated heat being transferred to the circuit board from the shield frame.

A recessed lighting fixture providing illumination from a light source including a plurality of light emitting diodes (LEDs) wherein the fixture is placed within the ceiling space above a ceiling panel or wall. The fixture has a low aspect ratio heat sink. An interchangeable trim ring has an integrated light reflector and attaches to the bottom of the heat sink via rare earth or super magnets. A flange of the heat sink and a flat annular surface of the trim ring engage each other, providing a large contact surface to enable conductive heat transfer. The flange and flat annular surface are located below the ceiling panel, which is at room temperature to help cool the recessed LED lighting fixture through radiation and air convection.

Methods and apparatuses to manage working states of a data processing system. At least one embodiment of the present invention includes a data processing system with one or more sensors (e.g., physical sensors such as tachometer and thermistors, and logical sensors such as CPU load) for fine grain control of one or more components (e.g., processor, fan, hard drive, optical drive) of the system for working conditions that balance various goals (e.g., user preferences, performance, power consumption, thermal constraints, acoustic noise). In one example, the clock frequency and core voltage for a processor are actively managed to balance performance and power consumption (heat generation) without a significant latency. In one example, the speed of a cooling fan is actively managed to balance cooling effort and noise (and/or power consumption).

Generally, the present invention is directed to a light-guided catheter for direct visualization of placement through the skin. An embodiment of the invention includes a method for transcutaneous viewing and guiding of intracorporeal catheters into a body that comprises inserting a catheter into the body having at least one lumen and internally illuminating the catheter with light capable of propagating through the blood and tissue to an external viewer outside of the body. The illumination may be point source, continuous, single or multi wavelength. A method of treatment of blood conditions is also disclosed using direct placement of a photo treatment source in the blood stream.

To reduce power consumption and associated heating in a line card of line termination equipment (LTE, 12) employing multiple cub-channel carriers to communicate broadband information to customer premise equipment (CPE, 30) down a wireline communication resource (26, sub-channel carrier transmissions are restricted (58) during periods of CPE inactivity. Power supplies to a power amplifier (30) associated with the line card and wireline resource (26) are reduced, with digital signal processing capabilities of the LTE (12) further restricted (64). When the CPE wishes to re-start communication, the CPE (30) locks (68) to a correct alignment in a transmission scheme using a pilot tone that is transmitted within a simple pattern sent during reduced sub-channel carrier transmissions. Alternatively, should all transmission from the LTE cease during CPE inactivity, then the CPE monitors (80) the transmission environment and sends (82) a wake-up call to the LTE between boundaries of an uplink slot. The LTE (12) re-establishes pilot tone transmissions (86), with synchronization and lock (88) subsequently achievable by the CPE (30): this is illustrated in FIG. 2.

Devices and methods to heat and cool human beings, including inducing and maintaining hypothermia in human patients. Methods include inducing hypothermia to treat ischemic events, including heart attack and stroke, to limit damage caused by the ischemic event. Methods can include: using the lungs for heat exchange; using cooled gases for ventilation; using helium in the ventilation gas mixture, using medications to control reflex heat production; and injecting a perfluorocarbon mist into the gas stream to increase the cooling rate. The high thermal conductivity and diffusivity of helium results in greater inspired gas temperature equalization toward body temperature. Due to the latent heat of vaporization, addition of even small quantity of phase-change perfluorocarbon dramatically increases the heat carrying capacity of the respiratory gases. Hypothermia may be terminated by discontinuing the medications and warming the patient using a warmed helium-oxygen mixture.

An apparatus for rapidly filling a hydrogen tank with a hydrogen gas comprises a hydrogen source; a hydrogen tank; a passage which connects the hydrogen source and said hydrogen tank; and a mechanism for varying the hydrogen-filling rate. The mechanism for varying the hydrogen-filling rate changes the hydrogen-filling rate depending upon the pressure within said hydrogen tank. The apparatus can suppress heat generation at the initial filling stage where the temperature is easily increased. Also, even if it takes longer time for increasing the pressure within the hydrogen tank at the initial filling state, the delayed time can be caught up and, the apparatus and the process of the present invention can totally attain a rapidly filling with hydrogen.

A wireless charging device comprises an electronic switch and a transmitting coil (L1) electrically connected with a power source in sequence. A control end of the electronic switch is connected with a transmitting control unit. The wireless charging device further comprises a current limiting resistance (R1) connected in serial with the transmitting coil. The wireless charging device further comprises a compensation capacitor (C1) connected in parallel with the transmitting coil. An insert total electromagnetic coupling structure is further employed for charging. Such wireless charging device is particularly suitable for electronic cigarette, with low cost, stable and reliable working status and high efficiency, and specific heat sink is not required.

A method is disclosed for controlling operation of an engine coupled to an exhaust treatment catalyst. Under predetermined conditions, such as after an engine cold start, the method operates an engine with a first group of cylinders having a first ignition timing, and a second group of cylinders having a second ignition timing more retarded than the first group. In addition, the engine control method also provides the following features in combination with the above-described split air/lean mode: idle speed control, sensor diagnostics, air/fuel ratio control, adaptive learning, fuel vapor purging, catalyst temperature estimation, default operation, and exhaust gas and emission control device temperature control. In addition, the engine control method also can change to combusting all cylinders at substantially the same ignition timing under preselected operating conditions such as fuel vapor purging, manifold vacuum control, and purging of stored oxidants in an emission control device.

A current sensing module for disposal proximate a conductor is disclosed. The current sensing module includes a housing having a first section and a second section that together define an opening for receiving the conductor therethrough. The second section is in operable connection with the first section. The current sensing module further includes a micro-electromechanical system (MEMS) based current sensor disposed within the first section proximate the opening for receiving the conductor.