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1. 发明授权

US5258968A Tracking error signal generating device for preventing offset of the generated tracking error signal 失效
标题翻译：跟踪误差信号发生装置，用于防止产生的跟踪误差信号的偏移
公开(公告)号：US5258968A
公开(公告)日：1993-11-02
申请号：US132090
申请日：1987-12-11
申请人： Norio Matsuda , Seiichi Ohsawa
发明人： Norio Matsuda , Seiichi Ohsawa
IPC分类号： G11B7/09
CPC分类号： G11B7/0943 , G11B7/0906 , G11B7/094
摘要： A tracking error signal generating device using a four-segment detector in which signals from diagonally opposed elements are combined and the two so combined signals are phase compared. According to the invention, either before or during the combining, the output signals of the segments have high level components removed so as to reduce offsetting due to a non-uniform beam illuminating the detector.
摘要翻译：使用四段检测器的跟踪误差信号发生装置，其中来自对角线相对的元件的信号被组合，并且两个这样的组合信号被相位比较。根据本发明，在组合之前或组合期间，段的输出信号具有去除的高电平分量，以便减少由于照射检测器的不均匀光束造成的偏移。

2. 发明授权

US5455817A Second harmonics generating optical recording layer 失效
标题翻译：二次谐波生成光记录层
公开(公告)号：US5455817A
公开(公告)日：1995-10-03
申请号：US106698
申请日：1993-08-16
申请人： Takuma Yanagisawa , Seiichi Ohsawa
发明人： Takuma Yanagisawa , Seiichi Ohsawa
IPC分类号： G11B7/00 , G11B7/005 , G11B7/125 , G11B7/135 , G11B7/24 , G11B7/258 , G11B7/26
CPC分类号： G11B7/258 , G11B7/005 , G11B7/24
摘要： A reflective film is formed over a recording surface of an optical disk on which pits are formed. The reflective film is made of a non-linear optical material which, when light is incident thereon, generates second harmonics of the incident light. In a reproduction optical system for reproducing this optical disk, when a reading beam reflected by the reflective film of the optical disk impinges on a filter for filtering out the basic wave of the reading beam, the filter only transmits the second harmonics which are then incident on a light receiver. Since information signals recorded on an optical disk is reproduced by reading only second harmonics of the reflected beam, the cut-off spatial frequency of the OTF can be made twice higher as compared with a conventional reproducing apparatus. In other words, the recording density of the recording medium can be made higher.
摘要翻译：反射膜形成在其上形成有凹坑的光盘的记录表面上。反射膜由非线性光学材料制成，当光入射时，其产生入射光的二次谐波。在用于再现该光盘的再现光学系统中，当由光盘的反射膜反射的读取光束入射到滤光器上以滤除读取光束的基波时，滤光器仅传输随后入射的第二谐波在光接收器上。由于通过仅读取反射光束的二次谐波来再现记录在光盘上的信息信号，所以与常规的再现装置相比，OTF的截止空间频率可以提高两倍。换句话说，可以使记录介质的记录密度更高。

3. 发明授权

US4774882A Method for controlling printing impact power in impact type dot printer 失效
标题翻译：用于控制冲击式点阵打印机中打印冲击力的方法
公开(公告)号：US4774882A
公开(公告)日：1988-10-04
申请号：US74510
申请日：1987-07-17
申请人： Seiichi Ohsawa , Masahiko Kaneko , Takashi Yokoyama
发明人： Seiichi Ohsawa , Masahiko Kaneko , Takashi Yokoyama
IPC分类号： B41J2/30 , B41J9/48 , B41J9/26
CPC分类号： B41J9/48 , B41J2/30
摘要： A method for controlling printing impact in an impact type dot printer which controls printing impact energy to be increase in case of normal density imprint function and to be decreased in case of high density imprint function in the controlling means of the impact type dot printer in which the printing stylus strikes the printing paper so that the printing paper can be prevented from being damaged during the high density imprint function.
摘要翻译：一种用于控制冲击式打印机中的打印冲击的方法，其控制打印冲击能量在正常密度压印功能的情况下增加，并且在冲击型打印机的控制装置中的高密度压印功能的情况下减少打印冲击的方法，其中印刷笔打印打印纸，使得可以防止在高密度压印功能期间打印纸被损坏。

4. 发明授权

US06418104B1 Tilt detector 失效
标题翻译：倾斜探测器
公开(公告)号：US06418104B1
公开(公告)日：2002-07-09
申请号：US09428558
申请日：1999-10-28
申请人： Makoto Sato , Seiichi Ohsawa
发明人： Makoto Sato , Seiichi Ohsawa
IPC分类号： G11B390
CPC分类号： G11B7/0956 , G11B7/00718 , G11B7/00745
摘要： A tilt detector is adapted to be used for a storage medium provided with a recording track on which information is recorded and a first and a second header portions, each arranged in a manner shifted in opposite directions to each other from a center line of the recording track. The detector includes a light irradiation unit for irradiating a light beam onto the first header portion, the second header portion and the recording track; a light receiving unit having a first light receiving surface and a second light receiving surface arranged adjacently and for receiving the light beam reflected by the storage medium, the first light receiving surface outputting a first output and the second light receiving surface outputting a second output; an operation unit for executing an arithmetic operation of the first output and the second output to generate an operation result signal; and an error signal generation unit for generating a tilt error signal based on the operation result signal. The tilt error signal indicates a tilt between the storage medium and an optical axis of the light beam.
摘要翻译：倾斜检测器适于用于设置有记录有信息的记录轨道的存储介质，以及第一和第二标题部分，每个头部部分以从记录的中心线彼此相反方向移位的方式布置跟踪。检测器包括用于将光束照射到第一标题部分，第二标题部分和记录轨道上的光照射单元; 光接收单元，其具有第一受光面和第二受光面，所述第一受光面相邻设置并用于接收由所述存储介质反射的光束，所述第一光接收表面输出第一输出，所述第二光接收表面输出第二输出; 操作单元，用于执行第一输出和第二输出的算术运算以产生运算结果信号; 以及用于基于操作结果信号产生倾斜误差信号的误差信号产生单元。倾斜误差信号表示存储介质与光束的光轴之间的倾斜。

5. 发明授权

US5381391A Optical recording medium having a third non-linear optical reflection film 失效
标题翻译：具有第三非线性光学反射膜的光学记录介质
公开(公告)号：US5381391A
公开(公告)日：1995-01-10
申请号：US125294
申请日：1993-09-22
申请人： Takuma Yanagisawa , Seiichi Ohsawa
发明人： Takuma Yanagisawa , Seiichi Ohsawa
IPC分类号： G11B7/24 , G11B7/258 , G11B13/00
CPC分类号： G11B7/24 , G11B7/258
摘要： An optical disk having two transparent and a refelection film. The reflection film is made of a non-linear optical material in which reflectance increases according to intensity of incident light thereto. The reflection film has a multiple reflectance.
摘要翻译：具有两个透明和反射膜的光盘。反射膜由反射率随入射光的强度而增加的非线性光学材料制成。反射膜具有多重反射率。

6. 发明授权

US4527921A Paper feed apparatus for shuttle printer 失效
标题翻译：往复打印机的送纸装置
公开(公告)号：US4527921A
公开(公告)日：1985-07-09
申请号：US653682
申请日：1984-09-21
申请人： Michio Koizumi , Yasuo Iwata , Seiichi Ohsawa
发明人： Michio Koizumi , Yasuo Iwata , Seiichi Ohsawa
IPC分类号： B41J15/04 , B41J15/16
CPC分类号： B41J15/16
摘要： A paper feeding apparatus used in shuttle printers including drive means for moving a print sheet and a paper holding spring for holding the print sheet on a platen to apply a back-tension to the print sheet when it is being moved. The feeding apparatus further includes friction means disposed opposed to the print sheet at a position forward of the platen in the direction of feeding, pressure spring means located opposed to the friction means, and a lever for biasing the pressure spring means against the friction means. The platen is movable between a first position where it is engaged by the paper holding spring and a second position where the plate is disengaged by the paper holding spring. The biasing lever has its tip placed in non-contact with the platen when the platen is engaged by the paper holding spring, whereby the lever can be engaged by the platen to separate the pressure spring means from the print sheet when the platen is moved from the first position to the second position.
摘要翻译：一种用于穿梭打印机的送纸装置，包括用于移动打印纸的驱动装置和用于将打印纸张保持在压板上的纸张保持弹簧，以在打印纸移动时向打印纸张施加反张力。所述进给装置还包括摩擦装置，所述摩擦装置在所述压板的前进方向上位于与所述摩擦装置相对的压力弹簧装置的位置处，所述摩擦装置设置在所述压板的前方的位置处，以及用于将所述压力弹簧装置偏压抵靠所述摩擦装置。压板可在其与纸张保持弹簧接合的第一位置和纸张被纸张保持弹簧分离的第二位置之间移动。当压板由纸张保持弹簧接合时，偏置杆的顶端放置成与压板非接触，由此当压板从压板移动时，压板可与压板接合以将压力弹簧装置与打印纸分离第一个位置到第二个位置。

7. 再颁专利

USRE39463E1 Multi-layer information recording medium and information recording and reproducing apparatus 有权
标题翻译：多层信息记录介质和信息记录和再现装置
公开(公告)号：USRE39463E1
公开(公告)日：2007-01-09
申请号：US11200543
申请日：2005-08-10
申请人： Seiichi Ohsawa , Takanori Maeda
发明人： Seiichi Ohsawa , Takanori Maeda
IPC分类号： B32B3/02
CPC分类号： G11B7/00745 , G11B7/08511 , G11B7/0945 , G11B7/13925 , G11B7/24038 , G11B2007/0006 , G11B2007/0013 , Y10T428/21
摘要： A multi-layer-information-recording medium is applied to an information recording and reproducing apparatus capable of recording or reproducing information on and from either of a single-layer-information-recording medium having a single recording layer on one side, and a multi-layer-information-recording layer having a plurality of recording layers layered on a spacer layer on one side as a change in reflectivity by irradiating a light beam. The multi-layer-information-recording medium is compatible in terms of at least reproducing and recording with a single-layer-information-recording medium having a cover layer having a predetermined refractive index “n” and a thickness “t” disposed on a recording layer on a light incident side surface. The multi-layer-information-recording medium includes a deepest recording layer deepest from the light incident side surface. The deepest recording layer is formed in an optical distance d1 from the light incident side surface satisfying an equation d1−nt. The multi-layer-information-recording medium also includes at least one shallow recording layer formed at an optical distance d2 satisfying an inequality d2
摘要翻译：多层信息记录介质被应用于能够在一侧具有单个记录层的单层信息记录介质中的任何一个上记录或再现信息的信息记录和再现设备，以及多层信息记录介质层信息记录层，其具有通过照射光束而在一侧的间隔层上层叠的多个记录层作为反射率的变化。多层信息记录介质至少与具有预定折射率“n”的覆盖层的单层信息记录介质和设置在该层的信息记录介质上的厚度“t”进行再现和记录兼容记录层在光入射侧表面上。多层信息记录介质包括从光入射侧表面最深的最深的记录层。最深的记录层形成为从光入射侧表面满足等式d1-nt的光学距离d1。多层信息记录介质还包括至少一个形成在满足从光入射侧表面的不等于d2

8. 发明授权

US5546372A Information detection light intensity control apparatus in optical disc recorded-information reproducing apparatus 失效
标题翻译：光盘记录信息再现装置中的信息检测光强度控制装置
公开(公告)号：US5546372A
公开(公告)日：1996-08-13
申请号：US255173
申请日：1994-06-07
申请人： Seiichi Ohsawa , Takuma Yanagisawa
发明人： Seiichi Ohsawa , Takuma Yanagisawa
IPC分类号： G11B7/00 , G11B7/005 , G11B7/125
CPC分类号： G11B7/126
摘要： An information detection light intensity control apparatus in an apparatus reproducing information recorded in an optical disc in which a reflectance has a dependency on an incident light intensity, comprising a light source for emitting an information detection light which enters the optical disc and a control system for controlling an intensity of the information detection light which enters the optical disc so that a ratio of an intensity of the information detection light which enters the optical disc and an intensity of the information detection light reflected from the optical disc is set to a predetermined value. According to the information detection light intensity control apparatus, a spot head value of the information detection light is held to the optimum value by coping with an aberration of a fluctuation such as disc tilt, disc thickness variation, or the like or with a sensitivity fluctuation of a super resolution film so that the information recorded in the super resolution optical disc can be stably reproduced.
摘要翻译：一种信息检测光强度控制装置，用于再现记录在其中反射率对入射光强度具有依赖性的光盘中的信息，包括用于发射进入光盘的信息检测光的光源和用于控制进入光盘的信息检测光的强度，使得进入光盘的信息检测光的强度与从光盘反射的信息检测光的强度的比率被设定为预定值。根据信息检测光强度控制装置，信息检测光的光斑值通过应对诸如光盘倾斜，光盘厚度变化等的波动的像差或者具有灵敏度波动而被保持为最佳值使得能够稳定地再现记录在超分辨率光盘中的信息。

9. 发明授权

US4852480A Dot line printer with individually replaceable printing head 失效
标题翻译：点阵式打印机，可单独更换打印头
公开(公告)号：US4852480A
公开(公告)日：1989-08-01
申请号：US294993
申请日：1989-01-06
申请人： Masao Kunita , Michio Koizumi , Seiichi Ohsawa
发明人： Masao Kunita , Michio Koizumi , Seiichi Ohsawa
IPC分类号： B41J2/26 , B41J2/275
CPC分类号： B41J2/275 , B41J2/26
摘要： In printing heads for a dot line printer, a plurality of which are arranged in line on the reciprocal frame and impact printing wires toward a platen by the driving force of electromagnets excited with the basis of the printing commands, the printing heads for a dot line printer includes electromagnetic actuators including shells which contain and fix cores being wound driving coil around therein and base plates which are attached to the shells in order to close up their opening sides, and forming the tightly closed magnetic loops, and printing springs one ends of which are fixed and supported by supporting portions extended from the base plates, the top ends of which fix armatures at the postion facing to the cores. The printing heads can be unitized, and the close arrangement of the base plates and the armatures can be accomplished by means of direct positioning and fastening of the printing springs to the base plate so that the device can be obtained with excellent maintenance capability as well as small sizes and light weight.
摘要翻译：在点阵式打印机的打印头中，多个通过在打印命令的基础上被激励的电磁体的驱动力沿着往复的框架排成一列并将印刷线冲压到压板上，用于点线的打印头打印机包括电磁致动器，其包括壳体，其包围并固定围绕其的驱动线圈的芯和附接到壳体的基板，以封闭其开口侧，以及形成紧密闭合的磁环，并且其一端的印刷弹簧由基板延伸的支撑部分固定和支撑，底板的顶端将电枢固定在面向芯部的位置上。打印头可以组合，并且可以通过将印刷弹簧直接定位和紧固到底板来实现基板和电枢的紧密布置，使得可以获得具有优异的维护能力的装置以及体积小，重量轻。

10. 发明授权

US4650348A Method of dot-printing underlines 失效
标题翻译：点印刷方法
公开(公告)号：US4650348A
公开(公告)日：1987-03-17
申请号：US684130
申请日：1984-12-20
申请人： Masahiko Kaneko , Masao Kunita , Seiichi Ohsawa
发明人： Masahiko Kaneko , Masao Kunita , Seiichi Ohsawa
IPC分类号： B41J2/485 , B41J29/26 , B41J3/12
CPC分类号： B41J29/26
摘要： A method of dot-printing underline or the like employing a print head and power source with relatively small capacity. The reciprocation of the print head is divided into a plurality of travels by the command of divisional print so that the required underline print is performed by the collected dot prints being printed at intervals on each of a plurality of travels of the print head. A rest time will be provided between each printing actions at intervals of the print head to reduce the capacity of a power source employed for driving the dot pins in the print head.
摘要翻译：使用具有相对较小容量的打印头和电源的点印刷下划线等的方法。打印头的往复运动通过分割打印命令被分成多个行程，从而通过在打印头的多个行进中的每个行进上间隔地打印的收集的点打印来执行所需的下划线打印。在打印头之间的每个打印动作之间将提供休息时间，以减少用于驱动打印头中的点针的电源的容量。

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