发明名称 Method of optically reading information, optical pickup apparatus and optical reproducing apparatus
摘要 A method of optically reproducing information from an optical recording medium on which concave or convex signal pits are formed, is provided with the steps of: irradiating each of pit edge portions of one signal pit which are opposed to each other, with a reading light respectively; detecting a reflection light from each of pit edge portions, separately, to output two detection signals indicating detected positions of the pit edge portions with respect to one signal pit; and reproducing one information recorded in one signal pit on the basis of the two detection signals.
申请公布号 US5485441(A) 申请公布日期 1996.01.16
申请号 US19940314233 申请日期 1994.09.28
申请人 PIONEER ELECTRONIC CORPORATION 发明人 MAEDA, TAKANORI
分类号 G11B7/00;G11B7/005;G11B7/125;(IPC1-7):G11B7/085 主分类号 G11B7/00
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