| 摘要 |
PROBLEM TO BE SOLVED: To solve the problems that sometimes a plurality of LDs are simultaneously lighted in the case that a plurality of LD light sources and LD drivers are provided and the number of signal line increases when a recording pulse control signal and an LD driving current control signal are respectively connected to the LD drivers. SOLUTION: This optical information recording and reproducing device is provided with a switch means for turning only one of a plurality of the LD drivers to an operation state so as not to simultaneously light a plurality of the LDs. The switch means controls the operation/non-operation of each of the LD drivers by the AND operation signal of an LD driver enable signal controlling the operation/non-operation of the LD driver and an LD driver selection signal selecting the LD driver to be operated. |
