Abstract:
PROBLEM TO BE SOLVED: To provide a vertical conduction electronic power device in which an output resistance, thermal resistance, size and gate change value are reduced. SOLUTION: The vertical conduction electronic power device includes gate areas 20, source areas 25 and drain areas 30 in an epitaxial layer 40 on a semiconductor substrate 10; gate sections 21, source sections 26 and drain sections 31 formed by a first metallization level; and gate terminals/pads, source terminals/pads 65 and drain terminals/pads formed by a second metallization level. The device extends perpendicularly to the substrate 10 and is provided with sinker structures 45 formed by grids of sinkers S arranged under both of first and second regions of individual drain areas 30. The sinker structure operates as an electrical conduction channel for the current directing from the source area 25 to the drain area 30 through the substrate 10. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide an image processing method which overcomes a stationary restriction having an adverse effect upon conventional techniques. SOLUTION: Firstly, the color information of an image relating to an examinee is extracted by an image extracting apparatus. A visually associated region is then detected. The gray scale of the extracted image is then normalized on the basis of the visually associated region to correct the exposure of the extracted image. A region corresponding to the skin of the photographed examinee is also identified, and the region is used as a visually concerned region in a step of exposure correction. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide an inertial sensor having failure threshold. SOLUTION: The inertial sensor having failure threshold is provided with a first body 2 and a second body 18, which can move relatively with respect to one another and are constrained by a plurality of elastic elements, and at least one sample element 6, connected between the first body 2 and the second body 18 and shaped so as to be subjected to a stress, when the second body 18 goes outside of the relative resting position with respect to the first body 2. The sample element 6 has at least one weakened region 9, 10. COPYRIGHT: (C)2004,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To suppress a phase current generated in winding of a stator over a full speed range of motor when driving a stepper motor in a voltage mode. SOLUTION: A method of driving a stepper motor in feed-forward voltage mode includes (A) a step of setting the amplitude of a sinusoidal phase voltage of the stepper motor to a predetermined value to rotate the stepper motor at a desired speed. The predetermined value is the sum of a back-electromotive force (BEMF) estimated via a function of the desired speed and a product of a desired amplitude of a phase current (Iphase) and an estimated absolute value of the impedance of the stepper motor. COPYRIGHT: (C)2011,JPO&INPIT