Abstract: A method for manufacturing a high-heat-dissipation mixed substrate includes: preparing a mother substrate, the mother substrate including an insulating layer and a temporary carrier plate which are laminated; arranging a plurality of first grooves and a plurality of first cavities on the mother substrate; filling the first groove with a thermally-conductive material to form a first thermally-conductive block, and adhering an embedded device in the first cavity and filling the first cavity with the thermally-conductive material to form a second thermally-conductive block; removing the temporary carrier plate to obtain a semi-finished substrate; manufacturing circuit layers on two opposite side surfaces of the semi-finished substrate to obtain a target mother substrate; and cutting the target mother substrate along region dividing lines to obtain a mixed substrate with a side surface being a thermally-conductive surface.

Abstract: The present invention provides apparatus and method for imaging a subject in clinical examination. An apparatus for imaging a subject, comprising: a plurality of light sources (20) for illuminating a region of interest within the subject, at least a portion of the light sources (20) being divided into groups and being actuated group by group, each actuated group of the light sources (20) providing an illumination flash with a predetermined duration, and different groups of the light sources (20) illuminating the region of interest at different angles; and a light detector (40) for receiving light reflected by the subject to form a frame of image for the region of interest per imaging period of the light detector (40), and the predetermined duration of the illumination flash being shorter than the imaging period, enough to enable different groups of the light sources to illuminate the region of interest per imaging period at different times within the imaging period.

Abstract: The present invention provides apparatus and method for imaging a subject in clinical examination. An apparatus for imaging a subject, comprising: a plurality of light sources (20) for illuminating a region of interest within the subject, at least a portion of the light sources (20) being divided into groups and being actuated group by group, each actuated group of the light sources (20) providing an illumination flash with a predetermined duration, and different groups of the light sources (20) illuminating the region of interest at different angles; and a light detector (40) for receiving light reflected by the subject to form a frame of image for the region of interest per imaging period of the light detector (40), and the predetermined duration of the illumination flash being shorter than the imaging period, enough to enable different groups of the light sources to illuminate the region of interest per imaging period at different times within the imaging period.

Abstract: The invention discloses a method and system to detect zero current conditions in a buck inductor by monitoring the voltage across the buck inductor. Once zero current and voltage conditions are present, an inverter circuit changes the operational state, i.e. conducting or non-conducting, of the switching transistors driving the lamps to reduce power loss associated with changing the operational state of switching transistors when under a load.

Abstract: An electronic ballast including a rectifying circuit to provide a signal representative of the current signal associated with a buck inductor, a monitoring circuit to provide a monitoring circuit signal when the signal representative of the buck inductor is within a specified range, and a comparing circuit coupled to the rectifying circuit and the monitoring circuit and operable to alter the output of the power converter circuit driving the lamps in response to comparisons between the signals from the rectifying circuit and the monitoring circuit to control power conditions in the ballasts.