Digital broadcast receiving device and station selection method

摘要

A digital broadcast receiving device (100) includes: a same broadcast station determination unit (109) that determines that a broadcast station broadcasting programs with the same broadcast times as the broadcast times of programs broadcast by a selected broadcast station in a predetermined interval in program schedules included in broadcast station information stored in a broadcast station information storage unit (108) is the same broadcast station as the selected broadcast station, generates same broadcast station information associating the selected broadcast station with the broadcast station determined to be the same broadcast station, and stores the same broadcast station information in the broadcast station information storage unit (108); and a station selection control unit (107) that, when reception deterioration is detected, controls the broadcast receiving unit (112) so as to switch the broadcast station selection over to a same broadcast station as determined by the same broadcast station determination unit (109) or to a broadcast station indicated by the same broadcast station information stored in the broadcast station information storage unit (108).

主权项

1. A digital broadcast receiving device comprising:
a broadcast receiving unit for generating a digital signal from a received signal received at an antenna and separating, from the digital signal, video data and audio data of a program broadcast by a selected broadcast station; a reception deterioration detection unit for detecting a reception deterioration state in which a reception state of the received signal has deteriorated; a broadcast station information storage unit for storing broadcast station information including, for each broadcast station, a station selection parameter for selecting broadcast programs and a program schedule having a plurality of individual schedules each indicating a broadcast start time and a broadcast end time or a broadcast start time and a broadcast duration of an individual program; a same broadcast station determination unit for comparing the program start times and the program end times of the individual schedules of a broadcast station under test, the broadcast station under test being a broadcast station other than the selected broadcast station and the individual schedules of the selected broadcast station in the respective program schedules and, when the program start times and the program end times of a plurality of individual schedules of the broadcast station under test and a plurality of individual schedules of the selected broadcast station included in a predetermined time interval match, determining that the broadcast station under test is the same broadcast station as the selected broadcast station, generating same broadcast station information associating the selected broadcast station with the broadcast station determined to be the same broadcast station, and causing the broadcast station information storage unit to store the same broadcast station information; and a station selection control unit for, when the reception deterioration detection unit detects the reception deterioration state, controlling the broadcast receiving unit so as to switch the broadcast station selection over to a same broadcast station determined by the same broadcast station determination unit or to a broadcast station indicated by the same broadcast station information stored in the broadcast station information storage unit.