| 摘要 |
PROBLEM TO BE SOLVED: To easily set a target satellite frequency, even if plural frequency shift systems exist by detecting a carrier signal in any of plural specific frequencies that have been defined preliminarily and specifying the type of a frequency shift in a community antenna. SOLUTION: A frequency is selected from among plural stored specific frequencies and is set as a selected frequency, when a community antenna system setting is selected. When a carrier signal is detected by selecting a channel, the ID of a transport stream(TS) described in a program association table and the ID of a TS corresponding to a satellite frequency in a network information table are acquired. When the ID that has been actually selected matches the ID allocated to the satellite frequency, one specific frequency can be specified among plural assumed specific frequencies, and the type of a frequency shift can be identified. |
