| 摘要 |
PURPOSE:To facilitate a self-clock by performing coding and decoding after securing the correspondence between 8-bit data and a prescribed 16-bit code according to the code state. CONSTITUTION:A table to which a prescribed 16-bit code is written according to the code state is stored in a ROM102. When the data series are supplied to a shift register 100 from an input terminal (a), the table and the address corresponding to the data are designated with the ROM102. Then the ROM102 reads a 16-bit code out of an address of the designated table to supply it to a shift register 103 and delivers it through a code output terminal (b). Thus adverse conversion is performed in a decoding mode after the coding is through. As a result, the minimum reverse interval is set at 1.5T together with the maximum reverse interval and the detection window width set at 5.5T and 0.5T respectively (T: data bit interval). This facilitates a self-clock. |
