System for visually dividing documents on video projector in meeting room, has broadcasting transmitters connected with manual control units in order to emit cut-off control radio signal in response to actuation of manual control units

摘要

The system has multiple switchgears for preventing arrival of signals of visual documents coming from emission modules on a wiring i.e. wired connection. A set of radio operator receivers is connected with the switchgears, and activates the switchgears in response to reception of a cut-off control radio signal. A set of broadcasting transmitters is connected with manual control units (328) in order to emit the cut-off control radio signal in response to an actuation of the manual control units.