Patent ID: 7277643

Claim:
A signal communication apparatus of the clock reproduction transmission type in which communication is conducted using parallel optical or electric signals, the apparatus comprising a data signal reception section for receiving data signals that have been transmitted, wherein the data signal reception section comprises: a number a of clock signal extraction circuits, each of which extracting a clock signal from each of a-bit data signals in n-bit parallel data signals that have been received, where a is an integer such that 2≦a<n; a clock signal selection circuit for selecting a single clock signal from the extracted a clock signals, the single clock signal being designated as a reference clock signal; a number n of phase adjusting circuits for adjusting the phase of the selected reference clock signal to produce reproduction clock signals for the received n-bit parallel data signals, each reproduction clock signal providing a timing of redigitization of each of the received n-bit parallel data signals; and sampling means for redigitizing each of received n-bit parallel data signals in accordance with the timing provided by the reproduction clock signal for each bit.