| 摘要 |
PURPOSE:To eliminate the trouble that circuits to be controlled are controlled separately with time differences, by triggering respective DA converting circuit at a common timing to perform DA conversion of data supplied to plural circuits to be controlled. CONSTITUTION:A computer control system 11 is provided with a vertical blanking signal generating circuit 12 as a timing control circuit. The circuit 12 supplies a vertical blanking signal, which is generated in a vertical blanking period, to DA converting circuits 4 to control them so that circuits 4 perform the DA converting operation in the vertical blanking period. Therefore, time division data outputs of individual circuits 5 obtained by operations in a microcomputer 2 are supplied to circuits 5 simulteneously in the vertical blanking period. Thus, circuits 5 are controlled in the vertical blanking period without time differences, and the trouble of transient disorder of white balance or the like is eliminated. |
