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12 results about "Power level" patented technology

System and method for controlling multiple beams illuminating projected images

InactiveUS8636367B1ProjectorsColor television detailsProjection imageDisplay device
The power and response curves of one or more beams or primaries of beams of a laser projection system illuminating an image on a viewing surface are controlled to desired characteristics during exhibition by monitoring the scanning beams in real time by using at least part of the horizontal blanking time during the scanning of a motion or still image to project a test pattern with one or more of the beams onto a sensor or sensors. The system and method permits real-time balancing and maintenance of the response curves and power levels of each of the beams, and of primary beams of combined beams, to desired targets so as to produce a display field without artifacts and at desired brightness on the viewing surface.
Owner:MAGIC LANTERN

Avoiding hot cracks during laser welding of a workpiece stack-up assembly of aluminum alloy workpieces

A method of laser welding a workpiece stack-up that includes two or more overlapping aluminum alloy workpieces is disclosed. The method involves controlling the power level of the laser beam during at least one of an initial stage or a final stage of advancing the laser beam along a weld path so as to limit a line energy of the laser beam during such stage or stages to being no greater than 10% above a line energy of the laser beam during an intermediate stage of laser beam advancement that is performed between the initial and final stages. By limiting the line energy during the initial and / or final stages of laser beam advancement along the weld path, excessive fusion of the workpiece stack-up assembly can be avoided in those locations to help protect against hot-cracking in the resultant laser weld joint.
Owner:GM GLOBAL TECH OPERATIONS LLC

Terminal running method and apparatus

InactiveCN105468120ALess power consumptionVolume/mass flow measurementPower supply for data processingState of artElectricity
The present invention provides a terminal running method and apparatus. The method comprises: setting an emergency mode for a terminal in advance; and when a system power level of the terminal is 0, enabling the terminal to run in the emergency mode. The terminal running method and apparatus provided by the present invention solve the problem in the prior art that when a power level displayed by a terminal system is 0, remaining available electricity of a battery of the terminal cannot be effectively used. According to the method and apparatus provided by the present invention, the terminal is enabled to run in the emergency mode when the system power level of the terminal is 0, and in the emergency mode, the terminal is only allowed to enable a preset function and execute a preset operation. In this way, the power consumption of the terminal is effectively reduced, so that the remaining available electricity of the battery of the terminal enables the terminal to run.
Owner:YULONG COMPUTER TELECOMM SCI (SHENZHEN) CO LTD

Optical fibre

ActiveCN111051843AAccurate and easier to calculateQuickly verify proper installationTesting fibre optics/optical waveguide devicesOptical light guidesLight reflectionLight signal
An optical fibre comprising a plurality of embedded optical reflectors distributed periodically along the length of the fibre and a method of quantifying loss associated with an optical connector thatis connected to optical fibre comprising a plurality of embedded optical reflectors distributed periodically along the length of the fibre. The method comprises: inserting an optical signal into thefibre through the optical connector; measuring a component of the optical signal reflected by at least one of the plurality of embedded optical reflectors, in which the component is received through the optical connector; calculating the difference in power level between the inserted and reflected signals; and quantifying, based on the calculated power level difference and the reflectivity of theembedded optical reflector, the loss associated with the optical connector.
Owner:BRITISH TELECOMM PLC
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