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    • 1. 发明公开
    • INFORMATION RECORDING MEDIUM AND INFORMATION RECORDING DEVICE
    • 信息记录介质,方法来播放和系统用于记录和媒体的复制
    • EP2264702A1
    • 2010-12-22
    • EP09804751.7
    • 2009-08-06
    • Panasonic Corporation
    • SHOJI, MamoruITO, Kiyotaka
    • G11B7/0045G11B7/007G11B7/125
    • G11B7/00736G11B7/1267G11B7/13925G11B7/24038
    • An information storage medium according to the present invention has n information storage layers (where n is an integer and n≧3), on which data can be written with a laser beam and which are stacked one upon the other. Each of the n storage layers has a test write zone for determining the recording power of the laser beam. When those n layers are counted from the one that is located most distant from the surface of the medium on which the laser beam is incident, there is a bigger radial location difference between the outer peripheral end of the inner one of the test write zones of i th and (i+1) th information storage layers (where i is an integer that satisfies 2≦i≦n-1) and the inner peripheral end of the other outer test write zone than between the outer peripheral end of the inner one of the test write zones of j th and (j+1) th information storage layers (where j is an integer that satisfies 1≦j≦i-1) and the inner peripheral end of the other outer test write zone.
    • 一种信息存储介质gemäß到本发明具有n层信息记录层(其中,n是一个整数且n‰§3),其上的数据可以用激光束被写入并且其被堆叠在另一个上。 上述n个存储层具有一测试写入区,用于确定性采矿的激光束的记录功率。 当这N层从一个没有位于最远离在其上的激光束入射在介质的表面,存在的测试记录区的内层一个的外周端之间的较大的径向位置差计数 第i个和第(i + 1)个信息记录层(其中,i是一个整数SATIS外资企业做2‰‰| I | N-1)和比所述的外周端之间的其他外测试记录区的内周端 内第j和(j + 1)个信息记录层的测试记录区中的一个(其中,j是一个整数做SATIS外资企业1‰‰|Ĵ| I-1)和另一外测试记录区的内周端 ,
    • 2. 发明公开
    • MODULATED SIGNAL DETECTING APPARATUS AND MODULATED SIGNAL DETECTING METHOD
    • 装置:用于检测调制信号检测调制信号和方法
    • EP2752850A1
    • 2014-07-09
    • EP12823184.2
    • 2012-08-16
    • Panasonic Corporation
    • ITO, KiyotakaHINO, Yasumori
    • G11B7/005G11B7/135
    • G02F2/00G11B7/1365G11B7/1395G11B20/10268H04B10/6165H04L27/223H04L27/2271
    • A phase difference error detecting unit (8) detects a phase difference error component included in a phase difference component; a phase difference correcting unit (3) corrects a first signal having the phase difference component as an angle of a cosine function and a second signal whose angle of the cosine function differs from that of the first signal by approximately π/2 based on the detected phase difference error component; a phase operating unit (6) operates a phase difference component from the first signal and the second signal corrected by the phase difference correcting unit (3); and the phase difference correcting unit (6) obtains the corrected first signal and the corrected second signal by rotating a coordinate point represented by the first signal and the second signal on a polar coordinate plane by an angle corresponding to the phase difference error component.
    • 相位差误差检测单元(8)检测包括在相位差成分的相位差的误差分量; 相位差校正部(3)来校正具有该相位差元件作为余弦函数的角度和第二信号,其余弦函数的角度不同于通过将约基于检测到的A / 2所做的第一信号的第一信号 相位差误差分量; 相位操作单元(6)进行操作,从所述第一信号的相位差成分和由相位差校正单元(3)校正后的第二信号; 和相位差校正单元(6)获得校正后的第一信号和通过旋转由所述第一信号和极性的第二信号所表示的坐标点在角对应于该相位差的误差分量由平面坐标校正的第二信号。