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71. 发明授权

US4806952A Information recording apparatus for recording/reproducing information by irradiating an information recording medium with an energy beam 失效
标题翻译：用于通过用能量束照射信息记录介质来记录/再现信息的信息记录装置
公开(公告)号：US4806952A
公开(公告)日：1989-02-21
申请号：US69177
申请日：1987-07-02
申请人： Tetsuya Nishida , Motoyasu Terao , Yasushi Miyauchi , Shinkichi Horigome , Kazuo Shigematsu , Norio Ohta , Toshimitsu Kaku , Masahiro Ojima
发明人： Tetsuya Nishida , Motoyasu Terao , Yasushi Miyauchi , Shinkichi Horigome , Kazuo Shigematsu , Norio Ohta , Toshimitsu Kaku , Masahiro Ojima
IPC分类号： G11B7/00 , G11B7/0037 , G11B7/0045 , G11B7/243 , G01D9/42
CPC分类号： G11B7/243 , G11B7/0037 , G11B2007/24312 , G11B2007/24316 , G11B7/00454 , G11B7/2531 , G11B7/257
摘要： In an information recording apparatus according to this invention, since it is not necessary to dispose any differential circuit, which was required heretofore, it is possible to fabricate it with a low cost and its error rate is also very small.Furthermore, since the mean reflectivity on the recording track does almost not vary by the fact that information is recorded there, no tracking off-set or focusing off-set is produced. Thus effects of this invention are remarkable.
摘要翻译：在根据本发明的信息记录装置中，由于不需要设置迄今为止所需的差分电路，所以可以以低成本制造差错电路，并且其误码率也非常小。此外，由于记录轨道上的平均反射率几乎不会因信息被记录在那里而变化，所以不产生跟踪偏移或聚焦偏移。因此，本发明的效果是显着的。

72. 发明授权

US4743774A Method and apparatus for optical detection of information 失效
标题翻译：信息光学检测方法和装置
公开(公告)号：US4743774A
公开(公告)日：1988-05-10
申请号：US828719
申请日：1986-02-12
申请人： Takeshi Maeda , Shigeru Nakamura , Hisataka Sugiyama , Kazuo Shigematsu , Atsushi Saito
发明人： Takeshi Maeda , Shigeru Nakamura , Hisataka Sugiyama , Kazuo Shigematsu , Atsushi Saito
IPC分类号： G11B7/00 , G11B7/004 , G11B7/005 , G11B20/10 , G06K7/10
CPC分类号： G11B7/005 , G11B20/10009
摘要： Method and apparatus for optically detecting information from a recording medium in which pits are formed by thermal energy of a light spot to record the information. A reproduction spot is irradiated onto the recording medium to produce a detection signal. From a differential signal of the detection signal, a signal indicative of zero points of the differential signal and a signal indicative of the presence of the pits are detected, and both the signals are used to detect positions of the pits. For stable and accurate detection of the pit position, the relation between pit size W and reproduction spot size W.sub.s is prescribed and the pit size and reproduction spot size are so set as to satisfy 0.45.ltoreq.W/W.sub.s .ltoreq.0.75.
摘要翻译：用于从记录介质光学检测信息的方法和装置，其中通过光点的热能形成凹坑以记录信息。将再现点照射到记录介质上以产生检测信号。根据检测信号的差分信号，检测出表示差分信号的零点的信号和指示凹坑存在的信号，并且这两个信号用于检测凹坑的位置。为了稳定且准确地检测凹坑位置，规定凹坑尺寸W与再现点尺寸Ws之间的关系，并且将凹坑尺寸和再现点尺寸设定为满足0.45≤W/ Ws <0.75。

73. 发明授权

US4348461A Recording member 失效
标题翻译：录音成员
公开(公告)号：US4348461A
公开(公告)日：1982-09-07
申请号：US160661
申请日：1980-06-18
申请人： Motoyasu Terao , Yoshio Taniguchi , Shinkichi Horigome , Masahiro Ojima , Kazuo Shigematsu , Keizo Kato , Yoshinori Miyamura , Seiji Yonezawa
发明人： Motoyasu Terao , Yoshio Taniguchi , Shinkichi Horigome , Masahiro Ojima , Kazuo Shigematsu , Keizo Kato , Yoshinori Miyamura , Seiji Yonezawa
IPC分类号： B41M5/26 , G03C1/705 , G11B7/24 , G11B7/243 , B32B5/14
CPC分类号： G11B7/243 , G03C1/705 , G11B2007/24314 , G11B2007/24316 , Y10S428/913 , Y10S430/146 , Y10S430/165 , Y10T428/31
摘要： A recording member having a predetermined substrate, and a thin film which is formed on the substrate and which is formed with recesses or pits for recording information when irradiated with a working beam, characterized in that said thin film is formed of an inorganic material which contains at least arsenic, selenium and tellurium, and that a distribution of either of said Se and said Te decreases from a part near the surface of said thin film towards a central part thereof, while a distribution of said As increases from a part near the surface towards said central part, is disclosed. This recording member can afford a high signal-to-noise ratio and a long lifetime. It is preferable that the distribution of said Se decreases so as to be at least 50 atomic-% in terms of the content of said Se in a part being the closest to the surface of said thin film and to be at most 40 atomic-% in terms of the average content of said Se over the whole thin film, and that the distribution of said As increases so as to be at most 15 atomic-% in terms of the content of said As in the closest part and to be 5 to 35 atomic-% in terms of the average content of said As in said whole thin film. The Se-Te-As-based material may well be doped with at least one element selected from the group consisting of Ge, S, Tl, Sn, Pb, In and Ta, within a range of 2 to 15 atomic-%.
摘要翻译：具有预定基板的记录部件和形成在基板上并且在用工作光束照射时用于记录信息的凹坑或凹坑形成的薄膜，其特征在于，所述薄膜由无机材料形成，所述无机材料包含至少砷，硒和碲，并且所述Se和所述Te中的任一个的分布从所述薄膜的表面附近的部分向其中心部分减少，而所述As的分布从表面附近的部分增加朝向所述中心部分。该记录部件可以提供高的信噪比和长的使用寿命。优选所述Se的分布以与所述薄膜表面最接近的部分中的所述Se的含量为至少50原子％，并且为至多40原子％就所述Se在整个薄膜上的平均含量而言，所述As的分布以所述As在最接近的部分的含量为最多为15原子％，并且为5〜在所述整个薄膜中，所述As的平均含量为35原子％。可以在2至15原子％的范围内掺杂选自由Ge，S，Tl，Sn，Pb，In和Ta组成的组中的至少一种元素的Se-Te-As基材料。

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