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A vehicular electronic key system includes an on-board device that mutually communicates with a portable device, and operates control equipment installed on a vehicle when specific information from the portable device is authenticated. The on-board device includes a distance storage section for storing travel distances of the vehicle, and a warning section for warning that the portable device disappeared when communication was stopped between the on-board device and the portable device. The on-board device communicates with the portable device each time a predetermined distance is travelled, stores the travel distance at each communication time point into the distance storage section, and drives, upon detection that a signal transmitted from the portable device was disrupted, the warning section to warn an undetected region between the last travel distance stored immediately before the transmitted signal was disrupted and a travel distance at a time point at which the transmitted signal was disrupted.

A backlight system including a printed board, a plurality of light sources mounted on a surface of the printed board, a frame member disposed to surround the plurality of light sources, a plurality of through-holes provided in the printed board to reduce weight of the printed board, and a cover member disposed on the printed board to cover the plurality of through-holes, whereby accomplishing great reduction in weight of the printed board without lowering reflection efficiency of light emitted from the light sources and providing a backlight system capable of effectively using for a large liquid crystal display.

A system of navigation employing an emergency longitude slide ruler for stellar navigation is described. The emergency longitude slide ruler is equipped with several wheels having rulers with settings including of the longitude slide ruler of the present invention include year, date, hour, minutes, star angle measurement degree wheel, a longitude wheel, a circumpolar star field identifier wheel, star meridian transit angles wheel, and a time zone wheel. All wheels are of diminishing diameters and are laid on top of each other in descending circumference with minute gradations allowing each consecutive wheel to line up with its larger adjacent wheel according to proper settings to eventually indicate longitude. The system presents an efficient and expedient means by which an individual with very limited knowledge of navigation and celestial bodies can determine his or her location, including longitude.

A front structure for a saddle-ride vehicle includes a transparent windscreen. The windscreen covers a front side of at least one gauge. The gauge is arranged in front of a handlebar for the vehicle. A front cowl that is arranged outside of a front fork in a vehicle width direction and extends in a straddling manner in front of and behind the front fork in a side view. The front cowl is arranged below a supporting member for the handlebar, and the front cowl is spaced away from the windscreen in a vertical direction.

A method is provided for rendering a scene including a digital three-dimensional (3D) model of a structure. The method includes traversing a scene graph composed of a hierarchical group of nodes representing respective 3D objects of the digital 3D model, and selecting nodes of the hierarchical group of nodes. The method includes adding a plurality of objects represented by the selected nodes to a render queue, performing a multiple-pass rendering of the plurality of 3D objects from the render queue. This includes in a pass of a plurality of passes, rendering a threshold portion but not all of the plurality of 3D objects to a framebuffer for output to a display device, with at least one of the plurality of 3D objects being left in the render queue after rendering the threshold portion. The method may also include a mesh simplification and / or z-occlusion.