| 摘要 |
PURPOSE:To reduce number of transmission lines by number of parity bits. CONSTITUTION:A coding circuit 2 converts a sign of a signal (a) and outputs a signal (b). A signal (d) outputted from a photoelectric conversion circuit 4 is checked by a code rule error check circuit 6. A parity coding circuit 7 receives a data bit (e) outputted from a decoding circuit 5, generates a parity bit and inverts the parity when an error of code rule is in existence. |
