Abstract: An electrically adjustable antenna control system includes a controller, an actuation mechanism controlled by the controller, and a feedback loop connected to both of the controller and actuation mechanism. Herein, the controller includes a control board and its imbedded program. The actuation mechanism includes a DC geared motor controlled by the control board and embedded program and an electrically adjustable antenna phase shifter driven by the geared motor. The feedback loop has a travel plate electrically coupled to both of the control board and DC geared motor and a counter device installed on the geared motor. The present invention also provides an electrically adjustable antenna control method realized by the above-mentioned electrically adjustable antenna control system.

Abstract: System for authorization and authentication comprises a server and at least one level of transit terminals. The server transmits digital content, server's identifier, and business pattern to the transit terminal. The transit terminal transmits to a lower level transit terminal the digital content, the server's identifier, the business pattern, and identifiers of respective transit terminals through which the digital content passes, and returns the above identifiers to the server. The server performs a match verification on the returned identifiers; if matched, the transit terminal is permitted to parse the business pattern and authorize a client to use the digital content based on privilege in the business pattern.

Abstract: An electrically adjustable antenna control system includes a controller, an actuation mechanism controlled by the controller, and a feedback loop connected to both of the controller and actuation mechanism. Herein, the controller includes a control board and its imbedded program. The actuation mechanism includes a DC geared motor controlled by the control board and embedded program and an electrically adjustable antenna phase shifter driven by the geared motor. The feedback loop has a travel plate electrically coupled to both of the control board and DC geared motor and a counter device installed on the geared motor. The present invention also provides an electrically adjustable antenna control method realized by the above-mentioned electrically adjustable antenna control system.