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119results about How to "Maintain sufficiency" patented technology

Techniques for detecting heart pulses and reducing power consumption in sensors

Low power techniques for sensing cardiac pulses in a signal from a sensor are provided. A pulse detection block senses the sensor signal and determines its signal-to-noise ratio. After comparing the signal-to-noise ratio to a threshold, the drive current of light emitting elements in the sensor is dynamically adjusted to reduce power consumption while maintaining the signal-to-noise ratio at an adequate level. The signal component of the sensor signal can be measured by identifying systolic transitions. The systolic transitions are detected using a maximum and minimum derivative averaging scheme. The moving minimum and the moving maximum are compared to the scaled sum of the moving minimum and moving maximum to identify the systolic transitions. Once the signal component has been identified, the signal component is compared to a noise component to calculate the signal-to-noise ratio.
Owner:TYCO HEALTHCARE GRP LP

CPU cooling using a heat pipe assembly

A CPU cooling apparatus comprises a fin, a heat sink, and a heat pipe thermally coupling the fin and the heat sink. When installed in a personal computer, the fin thermally couples with a CPU to receive heat generated by the CPU. The heat pipe conducts the heat to a heat sink, which is cooled by an exhaust fan that directs a flow of air outside the computer.
Owner:SHUTTLE COMP GRP INC +1

Copper foil with resistance layer, method of production of the same and laminated board

InactiveUS20120111613A1Suitable elasticitySuitable plasticityChromatisationPrinted circuit aspectsElectrical resistance and conductanceAlloy
A copper foil with a resistance layer is provided, wherein the variation value is small when it is made into a resistance element, the adhesion with the resin substrate to be laminated with is able to be sufficiently maintained, which has an excellent characteristics as a resistance element for a rigid and a flexible substrate. A copper foil with a resistance layer of the present invention comprises a copper foil on one surface of which a metal layer or alloy layer is formed from which a resistance element is to be formed, the surface of the metal layer or alloy layer being subjected to a roughening treatment with nickel particles. A method of production of a copper foil with a resistance layer of the present invention comprises: forming a resistance layer of phosphorus-containing nickel on a matte surface of an electrodeposited copper foil having crystals comprised of columnar crystal grains wherein a foundation of the matte surface is within a range of 2.5 to 6.5 μm in terms of Rz value prescribed in JIS-B-0601; and performing roughening treatment to a surface of the resistance layer with nickel particles wherein a roughness is within a range of 4.5 to 8.5 μm in terms of Rz value prescribed in JIS-B-0601. The alloy layer is for example formed from phosphorus-containing nickel.
Owner:FURUKAWA ELECTRIC CO LTD
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