Abstract: A coil spring includes a wire rod and an elastic coat provided on the wire rod. The coil spring includes a coil section including a plurality of coil portions. The wire rod includes a round cross-sectional portion, a cross-section varying portion, and a rectangular cross-sectional portion along the longitudinal direction of the wire rod. The cross section of the rectangular cross-sectional portion is substantially square and has a first plane and a second plane. The first plane and the second plane oppose each other in the coil section. The elastic coat is provided on at least one of the first plane and the second plane. The elastic coat is continuous from the round cross-sectional portion to the cross-sectional variation portion and the rectangular cross-sectional portion.

Abstract: A control system is designed to control an interrupter. The interrupter is started by a startup current to interrupt a main electric circuit. The startup current flows through an auxiliary electric circuit and has a current valve equal to or greater than a predetermined value. The control system includes a driving unit and a driven unit. The driving unit includes an intermediate electrical path to be connected to the main electric circuit. The driven unit is to be connected to the auxiliary electric circuit. When an abnormal current having a current value equal to or greater than a prescribed value flows through the intermediate electrical path, the driving unit uses, as a drive source for driving the driven unit, the abnormal current flowing through the intermediate electrical path. The driven unit supplies the auxiliary electric circuit with the startup current by being driven by the driving unit.

Abstract: In a video processing system which divides HD-size image data into a plurality pieces of sub-image data and performs image processing for upconversion to 4K×2K image data, four image processors synchronous with an HD signal each process a corresponding one of the four pieces of sub-image data. In this case, the image processors process the four pieces of sub-image regions while causing the four pieces of sub-image regions to overlap at their division boundaries, and particularly process the overlapping regions during respective blanking periods. After the image processing of the image processors, the overlapping data is removed. Thereafter, the pieces of image data of the four sub-regions are combined. Therefore, the division boundaries of the pieces of sub-images can be processed without a degradation in image quality.