Abstract: A mobile phone battery charger with a power cord winding mechanism is disclosed. The battery charger is formed with a power cord receiving chamber in which a winding reel is disposed. An upper end surface of the winding reel is disposed with two contacts connected with the power cord. One contact is disposed at the center of the upper end surface of the winding reel, while the other contact is formed as a circumferential contact around the central contact. A pair of inner terminals of the power cord are respectively soldered at the two contacts, and a pair of outer terminals of the power cord are extended through a passage out of the battery charger. Two resilient plates extend from a diaphragm of the battery charger into the receiving chamber. The resilient plates respectively contact with the two contacts. The winding reel is fitted around a projecting shaft formed on the bottom of the receiving chamber.

Abstract: A united home security system for joining a plurality of client-sides is disclosed. The system includes a sensing circuit, a subscriber emergency handling/communication circuit, a client-side monitor/control server, a remote administrating and monitoring device, and an alarm transmitting network. Each client-side communicates with the remote administrating and monitoring device via a public telecom-network, for transmitting the state information at the client-side. In case an emergency signal is detected at any client-side, the client-side monitor/control server communicates with the remote administrating and monitoring device via the telecom-network, and then an alarm signal is generated by the alarm transmitting network.

Abstract: A subscriber control circuit adapted to be incorporated in an united home security system is disclosed. The control circuit includes a plurality of client-side monitor/control servers, each serving to detect and control the situation at the subscriber and connected to a remote administrating and monitoring device via a public telephone network. The remote administrating and monitoring device is capable of transmitting alarm signal to an alarm transmitting network. The client-side monitor/control server also includes a central processing unit, a radio frequency receiver for receiving a detection signal from wireless sensing elements and an encoder for receiving and processing a detection signal from cabled sensing element. A DTMF based receiver connects the central processing unit to the remote administrating and monitoring device to receive a DTMF signal transmitted through the telephone line and transmit the received DTMF signal to the central processing unit.

Abstract: A control method for united home security system includes steps of defining a set of signal codes which are transmitted between a client-side monitor/control server and a remote administrant through a public telecom-network by using multiple frequency signals. When the server sends signals to the remote administrant, a data string which is assembled by following a predefined format is received and checked by the remote administrant. An event handling process will be performed if the data string is correct. The remote administrant performs a predetermined handling process which is corresponding to the incident code sent by the server. The remote administrant start performing a rescue process when receiving an emergency/rescue handling signal from the server.