| 摘要 |
PURPOSE:To obtain an optically converted signal with a simple method despite an input of an electric signal of a series different from an optical input signal, by supplying the electric signal, i.e., an input signal of a series different from the optical input signal to an equalizing/amplifying part directly or via an AC connection and then converting the electric signal into an optical signal after reproduction. CONSTITUTION:The supplied electric signal of a series different from an optical input signal is supplied to a termial (c). When this electric signal is extracted to a terminal (e) as an identification output, it is equalized at an equalizing/ amplifying part 2. This equalized output signal is identified through an identifying circuit 3 by the clock signal delivered from a timing circuit 4, and the output of the circuit 3 is obtained at the terminal (e). As a result, a new clock input signal is not required for the input electric signal. Thus the input signal, i.e., the equalized output to be supplied to the circuit 3 and 4 has no difference of input between the optical signal and the electric signal in terms of the potential and the amplitude. Thus, it is possible to always obtain a stable output at both terminals (e) and (f), respectively. |
