| 摘要 |
PROBLEM TO BE SOLVED: To suppress radiation noise.SOLUTION: A diffusion control part 151B sets whether spectrum diffusion is performed by frequency-modulating a reference clock, the amount of diffusion or the like in execution of spectrum diffusion for a drive clock generated by a clock generation circuit 151C. In a serial signal relay device 151, serial data received by an LVDS receiver 150 is temporarily stored in a serial data buffer circuit 151A, serial data read according to a drive clock generated by the clock generation circuit 151C is separated into a plurality of systems, and is supplied to a light emitting body drive part 152 along with the drive clock. For each of a plurality of light emitting body circuit boards, setting of whether spectrum diffusion is performed and setting of the amount of diffusion are allowed to differ.SELECTED DRAWING: Figure 11 |
