| 摘要 |
PURPOSE:To secure the demodulation for the data signal based on the clocks which are generated in the unit number corresponding to the measurement result of the inverting intervals of the self-clocking information (SCI) signal. CONSTITUTION:In case the FM-modulated SCI signal is demodulated, the signal inverting interval is either T0 or 2T0. And one unit of pulse/NC is generated based on latch signal output L1 in case the quantization is given to T0; while two units of pulse/NC are generated based on latch signal output L2 in case the quantization is given to 2T0 respectively. When the FM modulation is carried out, JKFF92 is reset by means of the output of NAND91 to which pulse X3 and latch signal output L2 are supplied. And the pulse/NC is divided into two parts by JKFF92, and the /Q output turns to clock RCL'. When output L1 is used for the data and clock RCL' is used for the clock which operates on the rise of RCL', the original digital data signal is demodulated. |
