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    • 33. 发明授权
    • Optical information recording and reproducing apparatus
    • 光信息记录和再现装置
    • US5568461A
    • 1996-10-22
    • US425902
    • 1995-04-20
    • Kenichi NishiuchiNoyasu MiyagawaEiji OhnoNobuo Akahira
    • Kenichi NishiuchiNoyasu MiyagawaEiji OhnoNobuo Akahira
    • G11B7/0045G11B7/005G11B7/007G11B7/085G11B7/09G11B7/125G11B11/105G11B7/00
    • G11B11/10595G11B7/0045G11B7/00456G11B7/005G11B7/00718G11B7/08505G11B7/08511G11B7/0901G11B7/0908G11B7/094G11B7/126G11B7/1267G11B7/007G11B7/00736
    • An optical information recording and reproducing apparatus for recording and reproducing an information signal on/from both concave portions and convex portions of guide grooves formed on a recording medium is disclosed. The optical information recording and reproducing apparatus includes: an optical portion for focusing a light beam emitted from a light source on the recording medium; a focusing control portion for controlling a focal point of the light beam; a tracking control portion for controlling the position of the light beam; a selection portion for selecting which of the concave portions and the convex portions of the guide grooves are used for recording or reproducing; a polarity inverting portion for inverting the polarity of an output signal from the tracking control portion depending on a result selected by the selection portion; a waveform setting portion for setting a modulation pattern for the light; and a signal reproduction portion for demodulating the information signal from a light reflected or transmitted by recorded marks recorded on the recording medium; wherein at least one of the focusing control portion, the tracking control portion, the waveform setting portion and the signal reproduction portion has at least two kinds of operation conditions for recording and reproducing the information signal on/from the concave portions and the convex portions of the guide grooves, and wherein the operation conditions are selected depending on the result selected by the selection portion.
    • 公开了一种用于在形成在记录介质上的引导槽的凹部和凸部上记录和再现信息信号的光学信息记录和再现装置。 光信息记录和再现装置包括:用于将从光源发射的光束聚焦在记录介质上的光学部分; 用于控制光束的焦点的聚焦控制部分; 跟踪控制部分,用于控制光束的位置; 用于选择引导槽的哪个凹部和凸部用于记录或再现的选择部分; 极性反转部分,用于根据由选择部分选择的结果来反转来自跟踪控制部分的输出信号的极性; 用于设置光的调制图案的波形设置部分; 以及信号再现部分,用于从记录在记录介质上的记录标记反射或发射的光解调信息信号; 其中聚焦控制部分,跟踪控制部分,波形设置部分和信号再现部分中的至少一个具有至少两种操作条件,用于在凹部和凸部的凹部和凸部之间记录和再现信息信号 引导凹槽,并且其中根据由选择部分选择的结果选择操作条件。
    • 37. 发明授权
    • OPTICAL INFORMATION RECORDING MEDIUM HAVING CONVEX AND CONCAVE PORTIONS FOR RECORDING INFORMATION AND AN ADDITIONAL PORTION FOR CONDITION DATA, AND RECORDING AND REPRODUCING APPARATUS FOR USING THE MEDIUM
    • 具有用于记录信息的记录介质和记录部分的光学信息记录介质和用于条件数据的附加部分以及使用介质的记录和再现装置
    • US06411592B1
    • 2002-06-25
    • US08598815
    • 1996-02-09
    • Kenichi NishiuchiNaoyasu MiyagawaEiji OhnoNobuo Akahira
    • Kenichi NishiuchiNaoyasu MiyagawaEiji OhnoNobuo Akahira
    • G11B724
    • G11B11/10595G11B7/0045G11B7/00456G11B7/005G11B7/007G11B7/00718G11B7/00736G11B7/08505G11B7/08511G11B7/0901G11B7/0908G11B7/094G11B7/126G11B7/1267
    • An optical information recording and reproducing apparatus for recording and reproducing an information signal on/from both concave portions and convex portions of guide grooves formed on a recording medium is disclosed. The optical information recording and reproducing apparatus includes: an optical portion for focusing a light beam emitted from a light source on the recording medium; a focusing control portion for controlling a focal point of the light beam; a tracking control portion for controlling the position of the light beam; a selection portion for selecting which of the concave portions and the convex portions of the guide grooves are used for recording or reproducing; a polarity inverting portion for inverting the polarity of an output signal from the tracking control portion depending on a result selected by the selection portion; a waveform setting portion for setting a modulation pattern for the light; and a signal reproduction portion for demodulating the information signal from a light reflected or transmitted by recorded marks recorded on the recording medium; wherein at least one of the focusing control portion, the tracking control portion, the waveform setting portion and the signal reproduction portion has at least two kinds of operation conditions for recording and reproducing the information signal on/from the concave portions and the convex portions of the guide grooves, and wherein the operation conditions are selected depending on the result selected by the selection portion.
    • 公开了一种用于在形成在记录介质上的引导槽的凹部和凸部上记录和再现信息信号的光学信息记录和再现装置。 光信息记录和再现装置包括:用于将从光源发射的光束聚焦在记录介质上的光学部分; 用于控制光束的焦点的聚焦控制部分; 跟踪控制部分,用于控制光束的位置; 用于选择引导槽的哪个凹部和凸部用于记录或再现的选择部分; 极性反转部分,用于根据由选择部分选择的结果来反转来自跟踪控制部分的输出信号的极性; 用于设置光的调制图案的波形设置部分; 以及信号再现部分,用于从记录在记录介质上的记录标记反射或发射的光解调信息信号; 其中聚焦控制部分,跟踪控制部分,波形设置部分和信号再现部分中的至少一个具有至少两种操作条件,用于在凹部和凸部的凹部和凸部之间记录和再现信息信号 引导凹槽,并且其中根据由选择部分选择的结果选择操作条件。
    • 39. 发明授权
    • Optical information recording medium
    • 光信息记录介质
    • US5410534A
    • 1995-04-25
    • US77374
    • 1993-06-17
    • Ken'ichi NagataEiji OhnoNobuo AkahiraKen'ichi NishiuchiNoboru Yamada
    • Ken'ichi NagataEiji OhnoNobuo AkahiraKen'ichi NishiuchiNoboru Yamada
    • G11B7/005G11B7/24G11B3/70
    • G11B7/24G11B7/0051
    • In an optical recording medium having concave and convex type signal pits formed on a substrate surface, a reflection layer is formed on the signal pits in such a manner that a reflection index of an interior of the signal pits is higher than a reflection index at a periphery of the signal pits with respect to a given reproduction laser beam wavelength. In an optical recording medium having a phase change recording layer which reversibly changes optical states upon application of laser energy, a structural phase difference between a reflection beam of non-recorded regions and a reflection beam of recorded regions of the optical recording medium with respect to the wavelength of a reproduction laser beam is in a range of (0.5-1.5)+2 n.pi. radians, where n is an integer. The phase change recording layer has principle components of Ge-Sb-Te or Sb-Se.
    • 在形成在基板表面上的具有凹凸型信号凹坑的光记录介质中,在信号凹坑上形成反射层,使得信号凹坑内部的反射指数高于信号凹坑内部的反射指数 信号的周边相对于给定的再现激光束波长凹坑。 在具有在施加激光能量时可逆地改变光学状态的相变记录层的光学记录介质中,非记录区域的反射光束和光学记录介质的记录区域的反射光束之间的结构相位差相对于 再现激光束的波长在(0.5-1.5)+2n pi弧度的范围内,其中n是整数。 相变记录层具有Ge-Sb-Te或Sb-Se的主要成分。