Abstract: A digital space management system is provided for managing a plurality of peripheral devices in a space. The digital space management system includes a communication unit for communicating with the peripheral devices, and a processing unit electrically coupled to the communication unit. The processing unit is operable to generate a space management graphic interface with a floor-planning function and a room-planning function allowing a user of the digital space management system to perform a space planning operation for the space.

Abstract: A multimedia communication system includes: an intercom device operable for picking up audio information, and for performing encoding and modulation processes upon the audio information so as to generate a modulated signal; and a multimedia device coupled to the intercom device for receiving the modulated signal therefrom, and operable for performing demodulation and decoding processes upon the modulated signal so as to generate a decoded audio signal, for generating an output audio signal from external audio information contained in an external input signal when the decoded audio signal is not received thereby, for generating the output audio signal from at least the decoded audio signal when the decoded audio signal and the external input signal are received thereby, and for audible reproduction of the output audio signal.