Patent ID: 7042492
Filing Date: 2006-05-09
Classification: E05F,E05Y,H04N

Abstract:
1. An automatic door assembly for installation at a doorway formed through a wall of a building, said door assembly comprising: a frame assembly constructed and arranged to be mounted to the building wall at the doorway thereof; a door panel constructed and arranged to be mounted to said frame assembly for movement between (1) a closed position wherein said door panel is positioned in covering relation over the doorway to prevent persons and objects from travelling therethrough and (2) an open position wherein said door panel is moved out of said covering relation to permit persons and objects to travel through the doorway; a door controlling system comprising: a door operator constructed and arranged to be connected to said door panel and adapted to communicate with said detection system, said door operator being constructed and arranged to move said door panel between the open and closed positions through said door panel travel area and to move the door panel towards said open position thereof responsive to receiving a door opening signal; a position sensor communicated to said processor for monitoring the plurality of positions of the door panel within the door panel travel area, each of the monitored positions of the door panel having a corresponding stored image in said memory of the door panel within the door travel area; the video signal processor being adapted to determine whether a person or object other than the door panel is within the door panel travel area by comparing at least the images of the field of view, including the door panel therein, received via the video data signal against the stored initial images of the door panel within the door travel area for the corresponding positions of the door panel as monitored by the position sensor, the processor using the compared images to determine that a person or object is within the door travel area.