Patent ID: 6975844

Claim:
A tuner receiving system, comprising: a tuner unit performing a tuning operation by receiving radio waves sent from external sources; a communication interface unit, connected to said tuner unit, performing a communication with said tuner unit; a main part of the system, processing a signal sent out from said communication interface unit and outputting predetermined data, being configured to discriminate a type of tuner included in said tuner unit, based on a first control signal indicating receipt of a specific address output from said tuner unit within a predetermined time after said communication between the tuner unit and said communication interface unit has started and the specific address has been transmitted from the communication interface unit to the tuner unit, the receiving frequencies corresponding to channels receivable by said tuner, in accordance with the type of said tuner and information from said communication interface unit, being sequentially set for establishing the communication; and when it is determined that the level of a second control signal returned from the tuner is normal, the type of the tuner is discriminated on the basis of the second control signal and all receiving stations, corresponding to channels receivable by the tuner, are displayed in accordance with the type of the tuner thus discriminated and information sent from the communication interface unit.