| 摘要 |
PROBLEM TO BE SOLVED: To automatically select a frame synchronization system quickly and accurately, when a reception station is changed. SOLUTION: When a reception station is changed, a control circuit 114 detects frame-type data FT1 in multiplexed data, where a frame type of a current reception station is detected. At the same time, a frame synchronization means of a frame synchronization circuit 111 is switched sequentially to detect a frame- type by which frame synchronization is taken. Based on two detected frame types, the frame synchronization means of the frame synchronization circuit 111 is selected. |
