Abstract: A vehicle mileage calculation device includes a travel distance calculation unit for calculating a travel distance of a vehicle, an actual fuel consumption amount calculation unit for calculating an actual amount of fuel consumed in an engine, a mileage calculation unit for calculating a mileage based on the travel distance and the actual fuel consumption amount, a stored energy change amount calculation unit for calculating a change amount of stored energy including one of kinetic energy, potential energy and electric energy, and a consumed energy amount calculation unit for calculating an amount of energy consumed when storing the stored energy.

Abstract: An vehicle ceiling mounted overhead display device comprising a rear facing first display panel providing entertainment image, a rear facing camera for photographing a scene behind the vehicle and outputting the captured image, an image processor for selecting a image region from the captured image, and outputting the selected image region, and a second display panel mounted opposite to the first display panel for providing the selected image region to the driver so that the driver can monitor the image at the rear of the vehicle via a rearview mirror with minimal obstruction caused by the overhead display device body.

Abstract: An objective lens drive for a laser disk apparatus drives an objective lens in focusing and tracking directions to ensure that a light beam generated from a source such as a laser diode through an optical system correctly focuses on a recording surface of a medium and follows a recording track. Focusing and tracking spring plates are formed by a one-piece spring plate device that is folded back on itself by about 180 degrees at a predetermined location. The device thus occupies little space. Slides and grooves are formed at an actuator base and a carriage, respectively, for tilt adjustment of the objective lens.