公开(公告)号：EP1585129A3

公开(公告)日：2006-11-02

申请号：EP05007813.8

申请日：2005-04-08

申请人： TDK Corporation

发明人： Kikukawa, Takashi, c/o TDK Corporation ,  Fukuzawa, Narutoshi, c/o TDK Corporation ,  Kobayashi, Tatsuhiro, c/o TDK Corporation

IPC分类号： G11B20/10 ,  H03G3/20

CPC分类号： G11B7/1387 ,  G11B7/005 ,  G11B7/1267 ,  H03G3/3084

摘要： A reproduction apparatus is capable of reproducing information recorded on information recording media including at least a super RENS recording medium (9a). The reproduction apparatus includes: an optical head (2) that receives laser light that has been reflected or transmitted by the information recording medium and photoelectrically converts the laser light to an electric signal (S1); a signal processing circuit (4) that extracts an AC component from the electric signal (S1) and attenuates the AC component by a predetermined attenuation; an amplitude controlling circuit (5) that controls an amplitude of an electric signal (S2) outputted from the signal processing circuit (4) so as to become a predetermined amplitude; and a reproduction circuit (6) that reproduces information recorded on the medium based on an electric signal (S3) outputted from the amplitude controlling circuit (5). An information recording medium testing apparatus (1) includes the reproduction apparatus and a test information generating circuit (8) that generates test information (D2).

摘要翻译： 再现装置能够再现记录在包括至少超级RENS记录介质（9a）的信息记录介质上的信息。 再现装置包括：光头（2），其接收由信息记录介质反射或透射的激光，并将激光光电转换成电信号（S1）; 信号处理电路（4），其从所述电信号（S1）提取AC分量，并使所述AC分量衰减预定的衰减量; 振幅控制电路（5），其控制从所述信号处理电路（4）输出的电信号（S2）的振幅，使其变为预定幅度; 以及再现基于从振幅控制电路（5）输出的电信号（S3）记录在介质上的信息的再现电路（6）。 信息记录介质测试装置（1）包括生成测试信息（D2）的再现设备和测试信息产生电路（8）。

公开(公告)号：EP1585129A2

公开(公告)日：2005-10-12

申请号：EP05007813.8

申请日：2005-04-08

申请人： TDK Corporation

发明人： Kikukawa, Takashi, c/o TDK Corporation ,  Fukuzawa, Narutoshi, c/o TDK Corporation ,  Kobayashi, Tatsuhiro, c/o TDK Corporation

IPC分类号： G11B20/10 ,  H03G3/20

CPC分类号： G11B7/1387 ,  G11B7/005 ,  G11B7/1267 ,  H03G3/3084

摘要： A reproduction apparatus is capable of reproducing information recorded on information recording media including at least a super RENS recording medium (9a). The reproduction apparatus includes: an optical head (2) that receives laser light that has been reflected or transmitted by the information recording medium and photoelectrically converts the laser light to an electric signal (S1); a signal processing circuit (4) that extracts an AC component from the electric signal (S1) and attenuates the AC component by a predetermined attenuation; an amplitude controlling circuit (5) that controls an amplitude of an electric signal (S2) outputted from the signal processing circuit (4) so as to become a predetermined amplitude; and a reproduction circuit (6) that reproduces information recorded on the medium based on an electric signal (S3) outputted from the amplitude controlling circuit (5). An information recording medium testing apparatus (1) includes the reproduction apparatus and a test information generating circuit (8) that generates test information (D2).

公开(公告)号：EP1067534A2

公开(公告)日：2001-01-10

申请号：EP00302520.2

申请日：2000-03-28

申请人： TDK Corporation

发明人： Kikukawa, Takashi, c/o TDK Corporation ,  Utsunomiya, Hajime, c/o TDK Corporation ,  Shingai, Hiroshi, c/o TDK Corporation ,  Kato, Tatsuya, c/o TDK Corporation

IPC分类号： G11B7/24 ,  G11B7/013

CPC分类号： B82Y10/00 ,  G11B7/0052 ,  G11B7/24 ,  G11B7/24085 ,  G11B7/252

摘要： In an optical information medium having an information bearing surface (21) having projections and depressions and/or capable of forming recorded marks, a functional layer (10) is added. The information borne on the information bearing surface can be read when reading light of a wavelength longer than 4NA·P L wherein P L is the minimum size of the projections and depressions or recorded marks and NA is the numerical aperture of a reading optical system is irradiated to the information bearing surface constructed by the functional layer or to the information bearing surface through the functional layer or to the functional layer through the information bearing surface. The intensity of reflected light from the functional layer changes in linear proportion to a change in the power of the reading light. The medium enables reading at a high resolution beyond the diffraction limit.

摘要翻译： 在具有具有凹凸的信息承载面（21）和/或能够形成记录标记的光信息介质中，添加功能层（10）。 当读取长于4NA.PL的波长的光时，可以读取信息承载表面上的信息，其中PL是突起和凹陷或记录标记的最小尺寸，NA是读取光学系统的数值孔径照射到 由功能层构成的信息承载面或通过功能层构成的信息承载面，或通过信息承载面构成功能层。 来自功能层的反射光的强度与读取光的功率的变化呈线性比例变化。 该介质能够以超过衍射极限的高分辨率进行读取。