MULTI BOX FOR COMMUNICATION

摘要

PURPOSE: A multi box for communication is provided to supply services by using the same transmission network for broadcasting without overlapping a frequency. CONSTITUTION: A frequency assigner(10) assigns frequencies without collisions among many communication companies. A combiner(20) comprises as follows. An upward distributor(21) distributes a communication upper signal into several signals. A downward combiner(22) combines communication downward signals as one. An upward/downward combination distributor(23) combines the upward distributor(21) and the downward combiner(22) as one. A signal combiner(24) combines the upward/downward communication signals with broadcasting signals transmitted from cable television companies. A transceiving frequency suppressor(25) suppresses an interference between the broadcasting signals and the communication signals.