| 摘要 |
A reproduction power test method for setting an optimal power of a reproduction light beam for reproducing an information from a domain wall displacement type magneto-optical medium comprises the steps of detecting a domain wall displacement start reproduction power Prwd at which the domain wall starts to be displaced, and a maximum reproduction power Prmax allowing the domain wall displacement, and setting an optimal reproduction power Pr based on the obtained domain wall displacement start reproduction power Prdwd and maximum reproduction power Prmax.
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