Patent ID: 8724035

Claim:
A receiver apparatus: comprising: a first receiving system configured to select a predetermined channel using a reception signal received by an antenna, and to perform demodulation/channel decoding/demultiplexing/decoding processings on a signal of a viewed program of this selected channel, and to output video and audio signals, the first receiving system including a first receiving circuit unit; a second receiving system configured to select a predetermined channel using a reception signal received by an antenna, and to perform s demodulation/channel decoding/demultiplexing/decoding processings on a signal of a viewed program of this selected channel, and to output video and audio signals, the second receiving system including a second receiving circuit unit; a selection unit configured to select and output either one of an output of the first receiving circuit unit of the first receiving system and an output of the second receiving circuit unit of the second receiving system; a demodulation/diversity combining unit configured to combine a demodulated signal of the first receiving system and a demodulated signal of the second receiving system, and to supply this composite signal to either one of the first and second receiving systems; and a control unit configured to control the first and second receiving systems; and the selection unit, and the demodulation/diversity combining unit, wherein the control unit includes a control portion configured to cause performance of a diversity reception operation, wherein channel decoding/demultiplexing/decoding processings are performed on the composite signal using either one of the first and second receiving systems and video/audio signals are output, wherein the control unit includes a control portion configured to execute a first composite operation, wherein when a predetermined condition has been satisfied during the diversity reception operation, either one of the first receiving system and the second receiving system is caused to continuously receive a viewed program as it is while the other receiving system is caused to perform channel search to search a channel satisfying a predetermined condition, and the selection unit is caused to select an output of the receiving system configured to continuously receive the viewed program, wherein the control unit includes a control portion which, when a channel to be received has not been found as a result of the first composite operation, is configured to execute a second composite operation, wherein the receiving system configured to continuously receive the viewed program and the receiving system configured to perform the channel search are interchanged, and the resulting receiving system configured to perform the channel search is caused to perform the channel search, and the selection unit is caused to select an output of the resulting receiving system configured to continuously receive the viewed program.