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Hiroaki Ichikawa

Hiroaki Ichikawa, Kanagawa JP

Patent application numberDescriptionPublished
20090021178Apparatus and method for driving backlight unit - The present invention is directed to a drive apparatus for a backlight unit (01-22-2009
20090096724Display apparatus, quantity-of-light adjusting method for display apparatus and electronic equipment - A display apparatus includes display means for displaying an image, a light source that irradiates light to the display means, and control means for controlling the quantity of light of the light source with pulse width modulation. The control means controls the quantity of light of the light source based on the ratio of the light-on period with pulse width modulation to the light-off period when the light source is turned off.04-16-2009
20090153464DISPLAY UNIT AND BACKLIGHT UNIT - The screen is exempt from variation in brightness due to uneven temperature distribution.06-18-2009
20100079368LIQUID CRYSTAL DISPLAY APPARATUS AND BACKLIGHT ADJUSTMENT METHOD - A liquid crystal display apparatus and backlight adjustment method are provided.04-01-2010
20100181921Apparatus and method for driving backlight unit - The present invention is directed to a drive apparatus for a backlight unit (07-22-2010

Patent applications by Hiroaki Ichikawa, Kanagawa JP

Hiroaki Ichikawa, Anjo JP

Patent application numberDescriptionPublished
20100122427Dust collector - In a dust collector which includes a tank and a main body disposed over the tank, the main body includes a housing and an air intake unit incorporated in the housing. A hook is provided in the housing of the main body, and capable of being manually operated to change a position thereof to one of a retracted position and a pull-out position. The hook in the retracted position is completely embedded in a profile of the housing, and the hook in the pull-out position projects sideward from the housing with a hooked end portion thereof oriented upward. A power tool with its projected portion disposed between the housing and the hook end portion of the hook in the pull-out position can be stably supported on an upper surface of the housing and an upper end of the hook end portion of the hook in the pull-out position.05-20-2010

Hiroaki Ichikawa, Shizuoka JP

Patent application numberDescriptionPublished
20090312166Roller - Providing a roller to prevent drag of a colorant, which is jetted on an electric wire and not dried yet, the guide roller 12-17-2009

Hiroaki Ichikawa, Makinohara-Shi JP

Patent application numberDescriptionPublished
20090304913Apparatus and Method for Coloring Electrical Wire - The present invention is to provide an apparatus for coloring an electrical wire to improve a visibility and design of the electrical wire. The apparatus includes a coloring device for ejecting a liquid coloring material to an outer surface of the electrical wire and a sliding device for moving relatively the coloring device in a direction perpendicular to a longitudinal direction of the electrical wire so as to color each whole outer surface of a plurality of coloring regions thereof responsive to a belt-shaped design pattern.12-10-2009

Hiroaki Ichikawa, Yokohama-Shi JP

Patent application numberDescriptionPublished
20090062603TREATMENT INSTRUMENT OPERATION UNIT AND MEDICAL SYSTEM WITH TREATMENT INSTRUMENT OPERATION UNIT - A treatment instrument operation unit is provided with a drive unit, an operation portion installation section and a command signal output section. The drive unit drives an operation portion for operating each treatment section of the respective treatment instruments. The operation portion is attached to the operation portion installation section provided to the drive unit. The command signal output section outputs an installation start signal to a controller for notifying that the installation of the treatment instrument has begun upon installation of the operation portion in the operation portion installation section. After outputting the installation start signal from the command signal output section to the controller, the drive unit drives the operation portion installation section to the position where the operation portion is allowed to be installed based on the control signal outputted form the controller.03-05-2009

Hiroaki Ichikawa, Azumino City JP

Patent application numberDescriptionPublished
20090046405SEMICONDUCTOR DEVICE - In order to enable detection of degradation of the heat dissipation from a semiconductor chip, even when the operating state of a semiconductor device cannot be predicted, a thermal resistance calculation circuit calculates the thermal resistance of the heat dissipation path from the semiconductor chip, based on the loss of a switching element calculated by a loss calculation circuit and the temperature of the semiconductor chip calculated by a temperature calculation portion, and when the voltage corresponding to the thermal resistance calculated by the thermal resistance calculation circuit exceeds a reference voltage, switching operation of the switching element is halted.02-19-2009