Patent ID: 8218739

Claim:
A method of storing an image sequence associated with the actuation of a door comprising an interior side and an exterior side by a door monitoring system controlling the operation of a door actuator, wherein the door actuator is operatively coupled to the door, the door monitoring system comprising: a control unit; an interior camera providing pictures operably coupled to the control unit, and positioned to view an area near to the interior side of the door; a exterior camera providing pictures operably coupled to the control unit and positioned to view an area near to the exterior side of the door; a recording device, wherein the control unit is operably coupled to the door actuator and can command the door actuator to actuate the door; the method comprising the steps of: capturing pictures from the interior and exterior camera to the recording device; setting the pictures in a circular buffer; storing to a recording device the pictures in the circular buffer corresponding to a time period beginning a prospective time prior to the actuation of the door and ending a retrospective time after the actuation of the door.