Abstract: Disclosed in this specification is a system for implementing an automatic door using a transparent display including an automatic door casing disposed around an entrance, a plurality of transparent display modules inserted into the automatic door casing or exposed to the outside to open and close the entrance, a sensor installed within a predetermined distance from the plurality of transparent display modules, wherein the sensor senses an object, a driver that controls at least one of the plurality of transparent display modules to be inserted into the automatic door casing or exposed to the outside based on a sensing result of the sensor, a door frame connected to the driver, wherein the door frame supports the plurality of transparent display modules, and a plurality of control boxes that respectively transmits different video data to the plurality of transparent display modules based on the sensing result of the sensor.

Abstract: Methods and apparatus for reversing a drive motor for a barrier movement operator are disclosed. The operator senses the nature of a request for reversal and based on the nature of the sensed request performs one of a plurality of processes to reverse the motor.

Abstract: This invention relates to a fire barrier which includes a functional combination of at least one single-panel casement panel and a sliding panel which is connected or adjacent to it. The sliding panel, which can be automatically moved horizontally during normal operation, contains an auxiliary drive mechanism which, in an emergency, moves the sliding panel without an outside power source into the open position. The casement panel is moved simultaneously by a closing mechanism from its fixed or open position into the correct closed position to create or act as a barrier.