| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To improve the yield rate of an optical head. <P>SOLUTION: The optical head 1 includes a plurality of light emitting elements P1 to Px, and a defect address recording memory 10 storing address ADR that assigns a plurality of effective light emitting elements while avoiding defective light emitting elements. Based on the address ADR, the dummy data addition circuit 21 of a head control circuit 2 assigns input image data Din to the plurality of effective light emitting elements and assigns dummy data to a plurality of dummy light emitting elements, thereby creating output image data Dout. Since the effective light emitting elements can be assigned while the defective light emitting elements are avoided, the yield rate of the optical head is improved even if part of it is defective. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
