| 摘要 |
PROBLEM TO BE SOLVED: To make an OFDM (Orthogonal Frequency Division Multiplexing) signal demodulation data speed coincident with a TS output data speed. SOLUTION: A frequency error calculation circuit 15 detects a clock frequency error from the number of data within a term determined from the term of a reception OFDM signals and transmission control information, a frequency division ratio control circuit 12 controls a frequency division ratio of a clock frequency dividing circuit 13 based on the detected clock frequency error, and a fixed frequency clock CLK-A is frequency-divided by the clock frequency dividing circuit 13, so that a smoothing output clock is generated in which the OFDM signal demodulation data speed is coincident with a smoothing output speed, and the generated smoothing output clock is used as a TS output clock. Thus, a transport stream (TS) smoothing an OFDM demodulation output signal is output from a buffer memory 11. COPYRIGHT: (C)2008,JPO&INPIT
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