| 摘要 |
This optical read/write apparatus has first and second optical heads 2a, 2b and includes location control sections 4a, 4b which make the relative arrangement of the first and second optical heads 2a, 2b variable according to either the environmental temperature or from one medium to another. The first optical head 2a performs a write operation to record a mark on an optical storage medium 1, and the second optical head 2b reads the information that has been written by scanning the recorded mark. The apparatus further includes a nonvolatile memory which saves the relative arrangement of the first and second optical heads 2a and 2b either on an environmental temperature basis or on a medium by medium basis.
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