Patent ID: 7742072
Filing Date: 2010-06-22
Classification: G08B,H04N

Abstract:
1. A monitoring image recording apparatus, comprising: a motion detecting unit for detecting motion, including a memory for storing video signals of two different image data to be input from cameras, a comparator for comparing the video signals of two different image data stored in the memory at every predetermined pixel unit, and a primary detector for storing a difference compared by the comparator at every primary predetermined pixel unit; a recording medium for recording image data to be input from the cameras; an operating unit for setting a search object; and a control unit for controlling the recording medium, wherein the primary detector stores a plurality of the differences at every primary predetermined pixel unit, characterized in that the motion detecting unit further includes: a second detector for calculating a difference value at every second predetermined pixel unit, based on averaging adjacent differences at every primary predetermined pixel unit among the plurality of differences at every primary predetermined pixel unit stored in the primary detector, wherein the second predetermined pixel unit is greater than the primary predetermined pixel unit; wherein the control unit records the difference value at every second predetermined pixel unit calculated by the second detector to the recording medium, together with image data and searches presence/absence of the motion based on the difference value at every second predetermined pixel unit read from the recording medium; and wherein the control unit selects one of the primary detector and the second detector on the basis of a size of the search object to search presence/absence of the motion of the search object.