Patent ID: 8520139
Filing Date: 2013-08-27
Classification: H04N

Abstract:
1. A device for controlling frame rate of an image signal on a motion image, the device comprising: a manipulation portion that a user manipulates to select a desired variation of the frame rate change over time from plural variations thereof; and a control portion that controls generation of a frame rate control signal for bringing the frame rate automatically to the variation of the frame rate change selected by the manipulation portion, wherein the plural variations include a variation of an inverse mode in which an inverse of the frame rate varies automatically and linearly over time, the variation of the inverse mode being equal to a variation of the frame rate change when numbers of frames to be thinned out increase linearly, and wherein the plural variations include a variation of an even mode in which the frame rate is constant during a period of time and increases according to a predetermined ratio after the period of time has elapsed, and the period of time for keeping each constant frame rate decreases according to an inverse of the predetermined ratio, so that numbers of generated or recorded frames during each period of time for keeping each constant frame rate are the same.