Abstract: A floor cleaning device includes a sensing module, a driving module, a sweeping module and a processing module. When the floor cleaning device moves into a signal area defined within a floor surface by an emitter signal emitted from a signal terminal, the sensing module outputs a sensing signal to the processing module while receiving the emitter signal from the signal terminal. The processing module activates, in response to receipt of the sensing signal, the sweeping module to gather dirt particles from the floor surface, and controls the driving module to operate in a multi-moving mode in such a way that a housing of the floor cleaning device is driven by the driving module to move within the signal area until a duration counting from initial receipt of the sensing signal reaches a cleaning time period.

Abstract: A method, an apparatus and a system for call forwarding through the Internet such that an incoming call transmitted by a caller can be forwarded to communication apparatuses connected to the Internet. The system comprises a first communication apparatus connected to an originating end of the caller, at least one second communication apparatus connected to the Internet, and a gateway apparatus. The gateway apparatus comprises a first port connected to the Internet, and a second port connected to the caller and the first communication apparatus. When the first communication apparatus receives an incoming call message, the gateway apparatus transmits the incoming call message to the second communication apparatus through the Internet, and then connects the call between the caller and the user of the second communication apparatus.