Patent ID: 7545444

Claim:
A receiving apparatus comprising: a digital terrestrial wave processing unit for processing a received broadcast signal as required for digital terrestrial broadcast; a digital cable processing unit for processing a received broadcast signal as required for digital cable broadcast; a memory unit for storing an indicator associated with a received broadcast signal, wherein the indicator is initially set to indicate an undetermined status; a determining unit for determining, for a selected received broadcast signal, whether the received broadcast signal is for said digital terrestrial broadcast or for said digital cable broadcast, based on a waveform characteristic of the received broadcast signal, wherein the indicator associated with the selected received broadcast signal and stored in the memory unit is updated in accordance with the determination by the determining unit; and a control unit, wherein said control unit comprises means for causing one selected from a group consisting of said digital terrestrial wave processing unit and said digital cable processing unit to execute said processing, based on the updated indicator associated with the selected received broadcast signal after determination by the determining unit and stored in the memory unit, and wherein, for a non-selected received broadcast signal, said control unit comprises means for executing processing by the digital terrestrial wave processing unit and the digital cable processing unit in a sequential order, wherein operation of the determining unit is terminated when the indicator is stored in the memory unit from a prior determination.