Patent ID: 7283445

Claim:
An optical storage device, comprising: an optical head for irradiating lights from a laser element onto a ROM-RAM optical recording medium where a recording film is formed on a substrate in which phase pits are formed, and detecting return lights from said optical recording medium; a signal detection unit for detecting light intensity modulated by said phase pits as ROM signals from said return lights, and detecting RAM signals where said return lights were modulated by said recording film; a reduction unit for reducing the cross-talk of said phase pits of the RAM signals of said recording film by feeding back said ROM signals to laser drive current of said laser element; and an adjustment unit for adjusting said reduction unit so as to present a constant cross-talk suppression effect regardless of temperature change of said laser element, wherein the optical storage device further comprises: a second signal detection unit for detecting an intensity of the irradiated light from said laser element to obtain a second ROM signal; and a temperature detection means for detecting a temperature of said laser element, said adjustment unit further comprising means for changing a gain of said feedback ROM signal from said phase pits according to detected temperature of said temperature detection unit when reproducing ROM and RAM, wherein said second ROM signal is used as a reproduced ROM signal when reproducing ROM and RAM.