| 摘要 |
PROBLEM TO BE SOLVED: To provide a driving system with which high resolution similar to that of a D/A converter with larger bit counts is ensured and also a wide adjustment range is obtained while suppressing the number of bits of a D/A converter, and further an optical communication device with which the suitable driving system is suitably put into operation. SOLUTION: The driving system has a set of: an adjusting member installed so as to be freely driven at least in one axial direction; a plurality of voltage generating means to generate voltages to drive the adjusting member; an adding means to add the voltages output from the respective voltage generating means; and a driving means to drive the adjusting member on the basis of the voltage added by the adding means, for the one axial direction. Each of voltage generating means has: the D/A converter to convert a digital signal from the outside into a voltage to drive the adjusting member; and weighting circuits to weight voltage levels output from the D/A converter, wherein the respective weighting circuits are constructed so as to be mutually differently weighted. COPYRIGHT: (C)2007,JPO&INPIT |
