| 摘要 |
<p>PURPOSE:To correct total lighting time uniformly, by constituting lighting signals except that having longest lighting time of a plurality of lighting pulse signals obtained through uniform splitting of that lighting signal, then distributing the lighting pulse signals uniformly to a region having predetermined width in a time section. CONSTITUTION:In a fluctuation correcting circuit, lighting signals except that having maximum width are splitted into many uniform pulses and distributed in respective time sections. In all time sections, time TLIM for feeding lighting signals is expanded/shrunk corresponding to other correction factors. Expansion/ shrinkage of the lighting signal is carried out by opening/closing a gate inserted in a lighting signal feeding circuit by means of a correction signal. A lighting- signal cut signal 25k is fed from a counter circuit 25 to every time section. A specific correction signal 25h is inputted from the correction circuit to the counter circuit 25 in order to time the output from the lighting-signal cut signal 25k.</p> |
