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1. 发明授权

US06678460B1 Magnetic reproducer and magnetic reproduction method 失效
标题翻译：磁再现器和磁再现方法
公开(公告)号：US06678460B1
公开(公告)日：2004-01-13
申请号：US09460866
申请日：1999-12-14
申请人： Isao Kogure , Yasutaka Kotani , Kazuyuki Iesaka , Masanori Kimura , Keiko Takeda , Hisao Osabe
发明人： Isao Kogure , Yasutaka Kotani , Kazuyuki Iesaka , Masanori Kimura , Keiko Takeda , Hisao Osabe
IPC分类号： H04N591
CPC分类号： G11B5/0086 , G11B5/588 , G11B20/10527 , G11B2020/10537 , G11B2020/10879 , G11B2220/91 , H04N5/782 , H04N9/8211
摘要： A magnetic reproducer for reproducing data recorded on a magnetic tape by forming tracks sequentially and obliquely along a longitudinal direction of the magnetic tape, has magnetic heads for reproducing the information by sequentially scanning the tracks formed on the magnetic tape with a first track width for a first recording system or a second track width for a second recording system wider than that for the first recording system. And, a gap width between the magnetic heads is set at a value which is wider than the first track width and narrower than the second track width.
摘要翻译：一种用于通过沿着磁带的纵向方向依次形成轨道来再现记录在磁带上的数据的磁性再现器，具有用于通过以形成在磁带上的轨迹顺序扫描形成磁道的磁头，第一记录系统或第二记录系统的第二轨道宽度比第一记录系统宽。并且，磁头之间的间隙宽度被设定为比第一轨道宽度宽且比第二轨道宽度窄的值。

2. 发明授权

US5136420A Optical fiber amplifier 失效
公开(公告)号：US5136420A
公开(公告)日：1992-08-04
申请号：US541822
申请日：1990-06-21
申请人： Shinya Inagaki , Masayoshi Shigihara , Sakae Yoshizawa , Kazuya Sasaki , Keiko Takeda
发明人： Shinya Inagaki , Masayoshi Shigihara , Sakae Yoshizawa , Kazuya Sasaki , Keiko Takeda
IPC分类号： G02B6/255 , G02B6/28 , H01S3/094
CPC分类号： G02B6/2551 , G02B6/2835 , H01S3/094003 , H01S3/09408
摘要： An optical fiber amplifier is disclosed wherein pumping light and signal light are introduced into an optical fiber doped with a rare-earth element to directly amplify the signal light. The optical fiber amplifier of the invention comprises means constituted from a reflecting film, a fiber loop or the like for causing pumping light to pass by a plurality of times in the doped fiber. Due to the provision of the reflective film or the fiber loop, pumping light can be utilized efficiently, and the amplification factor of the optical fiber amplifier is improved.

3. 发明授权

US5007698A Optical fiber amplifier/multiplexer 失效
标题翻译：光纤放大器/多路复用器
公开(公告)号：US5007698A
公开(公告)日：1991-04-16
申请号：US567614
申请日：1990-08-15
申请人： Kazuya Sasaki , Sakae Yoshizawa , Shinya Inagaki , Keiko Takeda
发明人： Kazuya Sasaki , Sakae Yoshizawa , Shinya Inagaki , Keiko Takeda
IPC分类号： G02B6/28 , G02F1/35 , H01S3/06 , H01S3/063 , H01S3/17
CPC分类号： H01S3/063
摘要： An optical waveguide having a first cross section is thinned to constitute a thinned portion having a second cross section, as long as a predetermined length. Surface of the thinned portion is contacted with a laser glass member doped with a rare earth element, such as Er. Due to the thinned diameter, the optical fiber is optically coupled with the laser glass member. A pumping light is input to either into the optical waveguide together with a signal light or directly into the laser glass member. Signal light coupled from the thinned portion to the laser glass member is amplified by stimulated emission of the laser glass. Thus amplified signal light is coupled back to the thinned portion so as to propagate along the optical waveguide. The thinned portion can be as short as several centi-meters compared with ten meters to more than one hundred meters of conventional optical amplifier. In the optical waveguide where the pumping light is directly input to the laser glass member, the complicated multiplexer is not necessary, resulting in a reliable operation of the amplifier.

4. 发明授权

US06266180B1 Optical fiber amplifier using optical fiber having a portion which suppresses nonlinear optical phenomena 有权
标题翻译：使用具有抑制非线性光学现象的部分的光纤的光纤放大器
公开(公告)号：US06266180B1
公开(公告)日：2001-07-24
申请号：US09339188
申请日：1999-06-24
申请人： Shinya Inagaki , Keiko Takeda , Kaoru Moriya , Hiroshi Onaka
发明人： Shinya Inagaki , Keiko Takeda , Kaoru Moriya , Hiroshi Onaka
IPC分类号： H01S310
CPC分类号： H01S3/06754 , H01S3/06716 , H01S3/06745 , H01S3/06758 , H01S3/1603
摘要： An optical amplifier which suppresses the occurrence of a nonlinear optical phenomena, such as four-wave mixing. The optical amplifier includes an optical fiber doped with a rare earth element, and a light source providing excitation light to the fiber so that a wavelength division multiplexed (WDM) light is amplified as the WDM light travels through the fiber from a first point to a second point along the fiber. A third point exists along the fiber between the first and second points at which a power of the WDM light substantially reaches a level producing a nonlinear optical phenomenal. A first portion of the fiber is between the first point and the third point, and a second portion of the fiber is between the third point and the second point. The second portion suppresses the occurrence of the nonlinear optical phenomena as compared to the first portion. The second portion can have various different constructions to provide the required suppression effect.
摘要翻译：抑制诸如四波混频的非线性光学现象的发生的光放大器。光放大器包括掺杂有稀土元素的光纤和向光纤提供激发光的光源，使得当WDM光从第一点传播到第一点时，波分复用（WDM）光被放大第二点沿着纤维。在第一和第二点之间的光纤上存在第三点，在该点处，WDM光的功率基本上达到产生非线性光学现象的电平。纤维的第一部分在第一点和第三点之间，纤维的第二部分在第三点和第二点之间。与第一部分相比，第二部分抑制非线性光学现象的发生。第二部分可以具有各种不同的结构以提供所需的抑制效果。

5. 发明授权

US06111586A Electronic photo album editing apparatus 失效
标题翻译：电子相册编辑器
公开(公告)号：US06111586A
公开(公告)日：2000-08-29
申请号：US802849
申请日：1997-02-19
申请人： Hisayoshi Ikeda , Junko Shiraha , Keiko Takeda , Akifumi Hirose , Matsudou Takahashi , Miyuki Hieda
发明人： Hisayoshi Ikeda , Junko Shiraha , Keiko Takeda , Akifumi Hirose , Matsudou Takahashi , Miyuki Hieda
IPC分类号： G06T11/60 , H04N1/21 , H04N1/387 , G06F15/00
CPC分类号： H04N1/3875 , G06T11/60 , H04N1/00196 , H04N1/3871 , H04N2201/3226 , H04N2201/3243 , H04N2201/3247 , H04N2201/3254 , H04N2201/3264
摘要： An electronic photo album editing apparatus in which photo images are set on a mount displayed on a screen of a display unit so that an electronic photo album can be edited. The electronic photo album editing apparatus includes an image reading unit for reading photo images. The editing apparatus also includes an input unit for inputting the photo images read by the image reading unit and for setting a name of a photo group to which the photo images belong and a management unit for managing to what photo group the photo images input by the input unit belong. Further, a display controller for causing, with reference to information obtained by the management unit, photo images belonging to a specified photo group to be displayed on the screen and an editing unit for editing an electronic photo album using photo images displayed on the screen are also included in the electronic photo album editing apparatus.
摘要翻译：一种电子相册编辑装置，其中将照片图像设置在显示在显示单元的屏幕上的安装台上，使得可以编辑电子相册。电子相册编辑装置包括用于读取照片图像的图像读取单元。编辑装置还包括输入单元，用于输入由图像读取单元读取的照片图像，并且用于设置照片图像所属的照片组的名称;以及管理单元，用于管理由哪个照片组输入的照片图像输入单元属于此外，显示控制器，参照由管理单元获得的信息，使用属于指定照片组的照片图像显示在屏幕上，以及编辑单元，用于使用屏幕上显示的照片图像编辑电子相册，也包括在电子相册编辑装置中。

6. 发明授权

US5327282A Optical amplifier for 1.3 .mu.m band 失效
标题翻译：光放大器为1.3微米
公开(公告)号：US5327282A
公开(公告)日：1994-07-05
申请号：US26513
申请日：1993-03-04
申请人： Keiko Takeda , Shinya Inagaki , Kenji Tagawa
发明人： Keiko Takeda , Shinya Inagaki , Kenji Tagawa
IPC分类号： G02B6/00 , G02F1/35 , H01S3/06 , H01S3/067 , H01S3/07 , H01S3/094 , H01S3/10 , H01S3/16 , H01S3/17 , H01S3/00
CPC分类号： H01S3/06754 , H01S3/1613
摘要： Disclosed is an optical amplifier, wherein efficient optical amplification of signal light of 1.3 .mu.m band is made achievable by optically exiting a doped fiber doped with Pr (praseodymium) alone, or together with other rare earth element, or a similar optical waveguide arrangement, and then supplying the optical waveguide arrangement with the signal light.
摘要翻译：公开了一种光放大器，其中通过光学地离开掺杂有Pr（镨）的掺杂光纤，或与其它稀土元素或类似的光波导装置一起，可实现对1.3μm带的信号光的有效光放大，然后向光波导装置提供信号光。

7. 发明授权

US06748176B1 Optical dropping apparatus and optical add/drop multiplexer 失效
标题翻译：光学滴滴装置和光分插复用器
公开(公告)号：US06748176B1
公开(公告)日：2004-06-08
申请号：US09645881
申请日：2000-08-25
申请人： Shinya Inagaki , Keiko Takeda , Kaoru Moriya
发明人： Shinya Inagaki , Keiko Takeda , Kaoru Moriya
IPC分类号： H04J1402
CPC分类号： H04J14/0204 , H04J14/0205 , H04J14/0209 , H04J14/021 , H04J14/0213
摘要： An optical dropping apparatus and an optical add/drop multiplexer capable of dropping optical signals of an arbitrary wavelength from a WDM optical signal. The apparatus comprises a generating means for occurring four-wave mixing, a dropping means for dropping light of a predetermined wavelength, and a controlling means for controlling the wavelength of a pump light which is occurred four-wave mixing at the generating means. This apparatus is able to change the wavelength of the optical signals to be dropped, by changing the wavelength of the pump light.
摘要翻译：一种能够从WDM光信号中丢弃任意波长的光信号的光学丢弃装置和光分插复用器。该装置包括用于发生四波混频的发生装置，用于降低预定波长的光的下降装置，以及用于控制在发生装置处发生四波混频的泵浦光的波长的控制装置。该装置能够通过改变泵浦光的波长来改变要落下的光信号的波长。

8. 发明授权

US5930436A Optical amplifying fiber and process of producing the same 失效
标题翻译：光放大纤维及其制造方法
公开(公告)号：US5930436A
公开(公告)日：1999-07-27
申请号：US868397
申请日：1997-06-03
申请人： Koji Okamura , Keiko Takeda
发明人： Koji Okamura , Keiko Takeda
IPC分类号： G02B6/036 , C03B37/012 , C03B37/018 , C03C13/04 , H01S3/06 , H01S3/067 , H01S3/10 , G02B6/22
CPC分类号： G02B6/02042 , C03B37/01211 , C03B37/01807 , C03B37/01838 , C03B37/01861 , C03C13/045 , H01S3/06708 , C03B2201/28 , C03B2201/30 , C03B2201/31 , C03B2201/34 , C03B2201/36 , C03B2201/42 , C03B2203/29 , H01S3/06729
摘要： An optical amplifying fiber including a clad, a first core provided inside the clad and containing Ge, a second core provided inside the first core and containing Er and Al, and a third core provided inside the second core and containing Ge. The second core has a refractive index higher than that of the clad, and the first and third cores have refractive indexes each of which is higher than that of the second core. Since the third core having the high refractive index is provided at a central portion, it is possible to make smaller a mode field diameter and hence to improve a conversion efficiency of pumping light into signal light. Further, since the second core contains Al as an amplification band width increasing element, it is possible to sufficiently ensure a wide amplification band width.
摘要翻译：一种光学放大光纤，包括：包层，设置在所述包层内并包含Ge的第一芯，设置在所述第一芯内并包含Er和Al的第二芯和设置在所述第二芯内并且包含Ge的第三芯。第二芯的折射率高于包层的折射率，第一和第三芯具有高于第二芯的折射率。由于具有高折射率的第三纤芯设置在中心部分，所以可以使模场直径变小，从而提高泵浦光转换为信号光的转换效率。此外，由于第二芯包含Al作为放大带宽增加元件，因此可以充分确保宽的放大带宽。

9. 发明授权

US5508842A Optical amplifier 失效
标题翻译：光放大器
公开(公告)号：US5508842A
公开(公告)日：1996-04-16
申请号：US259133
申请日：1994-06-13
申请人： Keiko Takeda , Sakae Yoshizawa , Sinya Inagaki , Kazuya Sasaki , Kenji Tagawa
发明人： Keiko Takeda , Sakae Yoshizawa , Sinya Inagaki , Kazuya Sasaki , Kenji Tagawa
IPC分类号： H01S3/067 , H01S3/094 , H01S3/30 , G02B6/26
CPC分类号： H01S3/06708 , H01S3/094003 , H01S3/06745
摘要： In an optical amplifier for amplifying a signal light by propagating the signal light and a pumping light in a rare earth element doped fiber doped with a rare earth element, a diameter of a rare earth element doped portion of the rare earth element doped fiber is gradually reduced in a direction of propagation of the pumping light. With this construction, an adverse rare earth element doped area which does not contribute to optical amplification, but rather attenuates the pumping light, can be eliminated to thereby provide an optical amplifier having increased amplification efficiency.
摘要翻译：在用于通过在稀土元素掺杂的稀土元素掺杂光纤中传播信号光和泵浦光来放大信号光的光放大器中，稀土元素掺杂光纤的稀土元素掺杂部分的直径逐渐地在泵送光的传播方向上减小。利用这种结构，可以消除不对光放大有贡献，而是衰减泵浦光的不利的稀土元素掺杂区域，从而提供具有增加的放大效率的光放大器。

10. 发明授权

US5077815A Apparatus for optically connecting a single-mode optical fiber to a multi-mode optical fiber 失效
标题翻译：将单模光纤光纤连接到多模光纤的装置
公开(公告)号：US5077815A
公开(公告)日：1991-12-31
申请号：US411890
申请日：1989-09-25
申请人： Sakae Yoshizawa , Akihiko Ichikawa , Etsugo Yoneda , Shinya Inagaki , Kazuya Sasaki , Keiko Takeda
发明人： Sakae Yoshizawa , Akihiko Ichikawa , Etsugo Yoneda , Shinya Inagaki , Kazuya Sasaki , Keiko Takeda
IPC分类号： G02B6/14 , G02B6/255 , G02B6/26 , G02B6/32 , G02B6/38
CPC分类号： G02B6/2558 , G02B6/14 , G02B6/2551 , G02B6/262 , G02B6/32 , G02B6/3825 , G02B6/3833
摘要： An apparatus connects a single-mode optical fiber in a transmitting side to a multi-mode optical fiber in a receiving side without a deterioration of baseband transmission characteristics. The apparatus optically connects the single-mode fiber to the multi-mode fiber with an optical axes displacement therebetween, so that an optical signal to a multi-mode optical fiber from a single mode optical fiber is incident in a steady state mode including not only lower mode, but higher mode. In one embodiment, the optical axes displacement is achieved by axial displacement between the single-mode fiber and multi-mode fiber. In another embodiment, the optical axes displacement is achieved by an angle displacement between the single-mode fiber and multi-mode fiber.

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