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1. 发明授权

US5490227A Light receiving module for SCM transmission 失效
标题翻译：用于SCM传输的光接收模块
公开(公告)号：US5490227A
公开(公告)日：1996-02-06
申请号：US324885
申请日：1994-10-18
申请人： Manabu Tanabe , Kuniaki Utsumi , Hideaki Takechi , Hiroyuki Sasai , Yasushi Matsui , Shigeru Yamane
发明人： Manabu Tanabe , Kuniaki Utsumi , Hideaki Takechi , Hiroyuki Sasai , Yasushi Matsui , Shigeru Yamane
IPC分类号： G02B6/02 , G02B6/26 , G02B6/42
CPC分类号： G02B6/421 , G02B6/02 , G02B6/262 , G02B6/4207
摘要： A light-receiving module includes: a pigtail optical fiber including a core portion for transmitting an optical signal and a cladding portion covering a side face of the core portion; an optical connector provided at a first end of the pigtail optical fiber for optically connecting a transmitting optical fiber with the end of the pigtail optical fiber; a light-receiving device having a light-receiving face for receiving the optical signal propagating through the core portion and for converting the optical signal into an electric signal; an optical coupling system for converging the optical signal emitted from a second end of the pigtail optical fiber onto the light-receiving face of the light-receiving device; and means for preventing light propagating through the cladding portion from reaching the light-receiving face of the light-receiving device so that the optical signal propagating through the core portion does not interfere with the light propagating through the cladding portion on the light-receiving face of the light-receiving device.
摘要翻译：光接收模块包括：辫状光纤，包括用于传输光信号的芯部分和覆盖芯部分的侧面的包层部分; 光纤连接器，其设置在所述尾纤光纤的第一端，用于将发射光纤与所述尾纤光纤的端部光学连接; 光接收装置，具有用于接收通过芯部传播的光信号并将光信号转换为电信号的光接收面; 光耦合系统，用于将从尾纤光纤的第二端发射的光信号会聚到光接收装置的光接收面上; 以及用于防止通过包层部分传播的光到达光接收装置的光接收面的装置，使得通过芯部传播的光信号不会干扰通过光接收面上的包层部分传播的光的光接收装置。

2. 发明授权

US5729281A Catv system in which chanel selection signal is transmitted from the subscriber location 失效
标题翻译：从用户位置发送通道选择信号的Catv系统
公开(公告)号：US5729281A
公开(公告)日：1998-03-17
申请号：US443699
申请日：1995-05-18
申请人： Kuniaki Utsumi , Hiroyuki Sasai , Hiroaki Yamamoto , Manabu Tanabe , Katsuyuki Fujito
发明人： Kuniaki Utsumi , Hiroyuki Sasai , Hiroaki Yamamoto , Manabu Tanabe , Katsuyuki Fujito
IPC分类号： H04H20/38 , H04H20/76 , H04H20/77 , H04H20/78 , H04H60/90 , H04N7/173 , H04N21/222 , H04N21/437 , H04N21/61 , H04N21/647 , H04N21/6587 , H04N7/14
CPC分类号： H04H60/90 , H04H20/38 , H04H20/76 , H04H20/77 , H04H20/78 , H04N7/173
摘要： A center station 1 generates an all-channel signal 2 obtained by multiplexing signals on all channels, and transmits the signals to a selective distribution station 10 through 1 wire transmission line such as an optical fiber. Subscribers' transmitting devices 40.sub.1 to 40.sub.N transmit requests for channels to be received by corresponding subscribers' receiving devices 30.sub.1 to 30.sub.N to the selective distribution station 10 in a radio transmission system. The selective distribution station 10 selects the signals on the channels requested from the all-channel signal 2 in response to requests to receive channels serving as up-signals transmitted in a radio transmission system from the subscribers' transmitting devices 40.sub.1 to 40.sub.N, and distributes and transmits the selected signals to the subscribers' receiving devices 30.sub.1 to 30.sub.N as down-signals.
摘要翻译：中心站1产生通过在所有信道上复用信号而获得的全信道信号2，并且通过诸如光纤的1线传输线将信号发送到选择分配站10。订户发送装置401〜40N向无线传送系统中的选择性分发站10发送要由相应的用户接收装置301〜30N接收的信道的请求。选择分配站10响应于从用户的发送设备401到40N在无线电传输系统中发送的用作接收信道的信道的请求，选择从全信道信号2请求的信道上的信号，并且将所选择的信号作为下行信号发送到用户接收装置301〜30N。

3. 发明申请

US20060045054A1 Wireless communication system 失效
标题翻译：无线通信系统
公开(公告)号：US20060045054A1
公开(公告)日：2006-03-02
申请号：US10530651
申请日：2003-10-17
申请人： Kuniaki Utsumi , Hiroaki Yamamoto , Kouichi Masuda , Tsutomu Niiho , Mariko Nakaso , Hiroyuki Sasai
发明人： Kuniaki Utsumi , Hiroaki Yamamoto , Kouichi Masuda , Tsutomu Niiho , Mariko Nakaso , Hiroyuki Sasai
IPC分类号： H04Q7/24
CPC分类号： H04W4/18 , H04B10/25754 , H04W84/12 , H04W88/04 , H04W92/02
摘要： A SW (70) receives an Ethernet® signal from an outside of areas E and F. The SW (70) selects and outputs the obtained Ethernet® signal to any one of APs (91a to 91e) in accordance with a network structure managed by the SW (70). The AP (91a to 91e) converts the Ethernet® signal to an electrical signal type wireless LAN signal, which is in turn output to a main station (10). The main station (10) frequency-multiplexes the signal output from each of the APs (91a to 91e), and converts the signal to an optical signal, which is in turn output to sub-stations (20a and 20b) The sub-station (20a and 20b) transmits the signal transmitted from the main station (10) to a terminal in the form of a wireless radio wave. Thereby, when a plurality of communication areas are present, the accommodation capacity of an AP can be effectively utilized in each communication area.
摘要翻译： SW（70）从区域E和F的外部接收以太网（R）信号.SW（70）根据以下的方式选择并将获得的以太网（R）信号输出到任何一个AP（91a至91e）具有由SW（70）管理的网络结构。 AP（91a至91e）将以太网（R）信号转换为电信号型无线LAN信号，该电信号型无线LAN信号又输出到主站（10）。主站（10）对从每个AP（91a至91e）输出的信号进行频率复用，并将该信号转换为光信号，该光信号又输出到子站（20a和20b）子站（20A和20b）以无线电波的形式将从主站（10）发送的信号发送到终端。因此，当存在多个通信区域时，可以在每个通信区域中有效地利用AP的容纳能力。

4. 发明授权

US07650112B2 Method and system for extending coverage of WLAN access points via optically multiplexed connection of access points to sub-stations 失效
标题翻译：用于通过接入点的光复用连接来扩展WLAN接入点覆盖范围的方法和系统
公开(公告)号：US07650112B2
公开(公告)日：2010-01-19
申请号：US10530651
申请日：2003-10-17
申请人： Kuniaki Utsumi , Hiroaki Yamamoto , Kouichi Masuda , Tsutomu Niiho , Mariko Nakaso , Hiroyuki Sasai
发明人： Kuniaki Utsumi , Hiroaki Yamamoto , Kouichi Masuda , Tsutomu Niiho , Mariko Nakaso , Hiroyuki Sasai
IPC分类号： H04B7/15
CPC分类号： H04W4/18 , H04B10/25754 , H04W84/12 , H04W88/04 , H04W92/02
摘要： A SW (70) receives an Ethernet® signal from an outside of areas E and F. The SW (70) selects and outputs the obtained Ethernet® signal to any one of APs (91a to 91e) in accordance with a network structure managed by the SW (70). The AP (91a to 91e) converts the Ethernet® signal to an electrical signal type wireless LAN signal, which is in turn output to a main station (10). The main station (10) frequency-multiplexes the signal output from each of the APs (91a to 91e), and converts the signal to an optical signal, which is in turn output to sub-stations (20a and 20b). The sub-station (20a and 20b) transmits the signal transmitted from the main station (10) to a terminal in the form of a wireless radio wave. Thereby, when a plurality of communication areas are present, the accommodation capacity of an AP can be effectively utilized in each communication area.
摘要翻译： SW（70）从区域E和F的外部接收以太网（R）信号.SW（70）根据以下（a）所示的AP（91a至91e）中的任何一个选择并输出所获得的以太网（R）信号 SW（70）管理的网络结构。 AP（91a至91e）将以太网（R）信号转换为电信号型无线LAN信号，该电信号型无线LAN信号又输出到主站（10）。主站（10）对从每个AP（91a至91e）输出的信号进行频率复用，并将该信号转换为光信号，该信号又输出到子站（20a和20b）。子站（20a和20b）以无线电波的形式将从主站（10）发送的信号发送到终端。因此，当存在多个通信区域时，可以在每个通信区域中有效地利用AP的容纳能力。

5. 发明授权

US06459519B1 Optical transmitter-receiver 失效
标题翻译：光收发器
公开(公告)号：US06459519B1
公开(公告)日：2002-10-01
申请号：US09056611
申请日：1998-04-08
申请人： Hiroyuki Sasai , Kazuki Maeda , Kuniaki Utsumi
发明人： Hiroyuki Sasai , Kazuki Maeda , Kuniaki Utsumi
IPC分类号： H04B1004
CPC分类号： H04B10/572 , H04B10/505 , H04B10/5051
摘要： A modulated electrical signal Smod produced upon amplitude-modulating a subcarrier having a high frequency (for example, a millimeter-wave band) by a baseband signal SBB to be transmitted and a main carrier MC outputted from a light source are inputted to an external optical modulating portion in an optical transmitter. The external optical modulating portion amplitude-modulates the main carrier MC by the modulated electrical signal Smod, to output a double-modulated optical signal OSdmod to an optical filter portion. The optical filter portion passes only a component of one of sidebands included in the double-modulated optical signal OSdmod, and outputs the component to an optical fiber as an optical signal OS. An optical/electrical converting portion in an optical receiver optical/electrical-converts the optical signal OS transmitted through the optical fiber, to directly obtain a baseband signal SBB. Consequently, the optical receiver is constructed simply and at low cost without requiring a wideband optical/electrical converting element for optical/electrical-converting a high-frequency electrical signal and a high-frequency electrical component (a frequency converter, a demodulator, a semirigid cable or a waveguide) which is very high in cost or is difficult to process.
摘要翻译：通过对要发送的基带信号SBB和从光源输出的主载波MC对具有高频（例如，毫米波频带）的子载波进行幅度调制而产生的调制电信号Smod被输入到外部光调制部分。外部光调制部通过调制后的电信号Smod对主载波MC进行振幅调制，将双调制光信号OSdmod输出到滤光器部。光滤波器部分仅通过包含在双调制光信号OSdmod中的一个边带的分量，并将该分量输出到光纤作为光信号OS。光接收机中的光/电转换部分对通过光纤传输的光信号OS进行光/电转换，以直接获得基带信号SBB。因此，光接收机简单且低成本地构成，而不需要用于光/电转换高频电信号和高频电气部件的宽带光/电转换元件（变频器，解调器，半刚性电缆或波导），其成本非常高或难以处理。

6. 发明授权

US06271942B1 Optical transmission device and system 失效
标题翻译：光传输装置及系统
公开(公告)号：US06271942B1
公开(公告)日：2001-08-07
申请号：US08978820
申请日：1997-11-26
申请人： Hiroyuki Sasai , Hiroaki Yamamoto , Kuniaki Utsumi , Katsuyuki Fujito , Yutaka Fuke
发明人： Hiroyuki Sasai , Hiroaki Yamamoto , Kuniaki Utsumi , Katsuyuki Fujito , Yutaka Fuke
IPC分类号： H04J1402
CPC分类号： H04B10/564 , H04B10/504 , H04B10/572 , H04B10/58
摘要： An oscillator outputs an additional signal with a frequency which is higher than a frequency corresponding to a bandwidth of a frequency band allotted to an electrical signal to be transmitted and lower than a half of a lowest frequency of a frequency band allotted to the electrical signal to be transmitted. Thereby, if a second order intermodulation distortion between the additional signal and the electrical signal to be transmitted occurs, a frequency where distortion occurs is outside all of the frequency bands allotted to the electrical signal to be transmitted, and the occurring second order intermodulation distortion does not affect the electrical signal to be transmitted. Further, if the second order intermodulation distortion of the additional signal occurs, the frequency where distortion occurs is outside all of the frequency bands allotted to the electrical signal to be transmitted, and the occurring second order intermodulation distortion does not affect the electrical signal to be transmitted. Not only noise and distortions caused by reflected optical signal but also OBI noise can be reduced by using the additional signal.
摘要翻译：振荡器输出一个附加信号，该信号的频率高于分配给要发送的电信号的频带的带宽的频率，并且低于分配给电信号的频带的最低频率的一半，被传送。因此，如果发生附加信号和要发送的电信号之间的二阶互调失真，则发生失真的频率在分配给要发送的电信号的所有频带之外，并且发生的二阶互调失真不影响要传输的电信号。此外，如果发生附加信号的二阶互调失真，则发生失真的频率在分配给要发送的电信号的所有频带之外，并且发生的二阶互调失真不影响电信号传输。不仅可以通过使用附加信号来减少由反射光信号引起的噪声和失真，而且可以减少OBI噪声。

7. 发明授权

US07460829B2 Wireless communication system 失效
标题翻译：无线通信系统
公开(公告)号：US07460829B2
公开(公告)日：2008-12-02
申请号：US10530976
申请日：2004-07-22
申请人： Kuniaki Utsumi , Hiroaki Yamamoto , Kouichi Masuda , Tsutomu Niiho , Mariko Nakaso , Kazuo Tanaka , Hiroyuki Sasai
发明人： Kuniaki Utsumi , Hiroaki Yamamoto , Kouichi Masuda , Tsutomu Niiho , Mariko Nakaso , Kazuo Tanaka , Hiroyuki Sasai
IPC分类号： H04B7/185
CPC分类号： H04W52/143 , H04B10/25754 , H04W52/24 , H04W88/085
摘要： A wireless communication system capable of keeping a level of a wireless signal received by a relay apparatus within a predetermined dynamic range. In a control apparatus, a transmitting section converts a downstream electric signal into a downstream optical signal and transmits the downstream optical signal to the relay apparatus via an optical transmission path. The relay apparatus converts the received downstream optical signal into a downstream electric signal and transmits the downstream electric signal as a wireless signal to a wireless communication terminal from a transmitting/receiving antenna section. In the relay apparatus, a level adjustment section adjusts the level of the wireless signal transmitted by the relay apparatus such that the receiving level of the wireless signal received by the relay apparatus is kept within a predetermined range.
摘要翻译：一种无线通信系统，其能够将中继装置接收到的无线信号的电平保持在规定的动态范围内。在控制装置中，发送部将下行电信号转换为下行光信号，经由光传输路径将下行光信号发送给中继装置。中继装置将接收到的下行光信号转换成下行电信号，并且将来自发送/接收天线部的无线信号的下行电信号发送到无线通信终端。在中继装置中，电平调整部分调整由中继装置发送的无线信号的电平，使得由中继装置接收的无线信号的接收电平保持在预定范围内。

8. 发明申请

US20050266797A1 Radio communication system 失效
标题翻译：无线通信系统
公开(公告)号：US20050266797A1
公开(公告)日：2005-12-01
申请号：US10530976
申请日：2004-07-22
申请人： Kuniaki Utsumi , Hiroaki Yamamoto , Kouichi Masuda , Tsutomu Niiho , Mariko Nakaso , Kazuo Tanaka , Hiroyuki Sasai
发明人： Kuniaki Utsumi , Hiroaki Yamamoto , Kouichi Masuda , Tsutomu Niiho , Mariko Nakaso , Kazuo Tanaka , Hiroyuki Sasai
IPC分类号： H04B7/005 , H04B10/00 , H04B10/071 , H04B10/077 , H04B10/079 , H04B10/272 , H04J13/00 , H04W52/04 , H04W52/14 , H04W52/24 , H04W88/08 , H04W92/00 , H04B7/14
CPC分类号： H04W52/143 , H04B10/25754 , H04W52/24 , H04W88/085
摘要： The present invention is directed to a wireless communication system capable of keeping a level of a wireless signal received by a relay apparatus (20) within a predetermined dynamic range. In a control apparatus (10), a transmitting section (102) converts a downstream electric signal into a downstream optical signal and transmits the downstream optical signal to the relay apparatus (20) via an optical transmission path (40). The relay apparatus (20) converts the received downstream optical signal into a downstream electric signal and transmits the downstream electric signal as a wireless signal to a wireless communication terminal (30) from a transmitting/receiving antenna section (204). In the relay apparatus (20), a level adjustment section (207) adjusts the level of the wireless signal transmitted by the relay apparatus (20) such that the receiving level of the wireless signal received by the relay apparatus is kept within a predetermined range.
摘要翻译：本发明涉及能够将由中继装置（20）接收的无线信号的电平保持在规定动态范围内的无线通信系统。在控制装置（10）中，发送部（102）将下行电信号转换为下行光信号，经由光传输路径（40）将下行光信号发送给中继装置（20）。中继装置（20）将接收到的下行光信号转换为下行电信号，并将发送/接收天线部（204）的下行电信号作为无线信号发送到无线通信终端（30）。在中继装置（20）中，电平调整部（207）调整由中继装置（20）发送的无线信号的电平，使得由中继装置接收到的无线信号的接收电平保持在预定范围内。

9. 发明授权

US5973820A FM modulation device 失效
标题翻译： FM调制装置
公开(公告)号：US5973820A
公开(公告)日：1999-10-26
申请号：US080312
申请日：1998-05-18
申请人： Masaru Fuse , Kuniaki Utsumi , Seiichiro Kawashima , Koji Kikushima
发明人： Masaru Fuse , Kuniaki Utsumi , Seiichiro Kawashima , Koji Kikushima
IPC分类号： G02F2/00 , H03C3/36 , H04B10/2507 , H04B10/516 , H04B10/54 , H04B10/548 , H04B10/564 , H04B10/572 , H04B10/61 , G02F1/23
CPC分类号： H03C3/36
摘要： A branch portion 107 branches a modulating signal into two signals in opposite phases. One of them is inputted to an FM laser element 102. The other one is adjusted in propagation delay and in amplitude and then is inputted to an IM suppressing laser element 110. The FM laser element 102 outputs an optical-frequency-modulated signal around a wavelength .lambda.1, whose optical intensity is also modulated. A local light source 104 outputs light at a wavelength .lambda.0, which is different from the oscillation wavelength .lambda.1 of the FM laser element 102 by .DELTA..lambda.. The IM suppressing laser element 110 outputs an optical-intensity-modulated signal. The three lights are combined and inputted to a photodetection portion 106. The photodetection portion 106 applies a heterodyne detection to inputted lights to output an FM modulated signal corresponding to a beat signal of the outputted optical signal from the FM laser element 102 and the outputted light from the local light source 104 at frequency corresponding to the difference .DELTA..lambda. between the original two wavelengths, and also cancels the average-value variation component in the FM modulated signal with an electrical signal produced by square-law detecting the optical-intensity-modulated signal from the IM suppressing laser element 110, thereby producing an ideal FM modulated signal.
摘要翻译：分支部分107将调制信号分成相反相位的两个信号。其中一个被输入到FM激光元件102.另一个被调整为传播延迟和幅度，然后被输入到IM抑制激光元件110.MF激光元件102输出一个光频调制信号波长λ1，其光强度也被调制。局部光源104输出波长λ0的光，其与FM激光元件102的振荡波长λ1不同，通过DELTAλ。 IM抑制激光元件110输出光强度调制信号。三个光被组合并输入到光检测部分106.光检测部分106对输入的光进行外差检测，以输出对应于来自FM激光元件102的输出光信号的拍频信号的FM调制信号和输出的光从本地光源104以与原始两个波长之间的差ΔTAλ相对应的频率，并且还利用通过检测光强度调制的平方律产生的电信号来消除FM调制信号中的平均值变化分量来自IM抑制激光元件110的信号，从而产生理想的FM调制信号。

10. 发明授权

US5204767A Pay-channel transmission system for CATV 失效
标题翻译：有线电视付费频道传输系统
公开(公告)号：US5204767A
公开(公告)日：1993-04-20
申请号：US772486
申请日：1991-10-07
申请人： Hiroaki Nakata , Kuniaki Utsumi , Kazuki Maeda
发明人： Hiroaki Nakata , Kuniaki Utsumi , Kazuki Maeda
IPC分类号： G06F21/10 , H04J14/02 , H04K1/00 , H04N7/16 , H04N7/167 , H04N7/171 , H04N7/22
CPC分类号： H04B10/69 , H04B10/675 , H04J14/0226 , H04J14/0234 , H04J14/0298 , H04N7/16 , H04N7/22 , H04J14/0282
摘要： A pay-channel transmission system for a CATV has an optical transmission unit and an optical receiver unit. The optical transmission unit includes pay-channel television signals optically multiplexed by a .lambda..sub.1 wavelength semiconductor laser and non-pay-channel television signals optically multiplexed by a .lambda..sub.2 wavelength semiconductor laser. The optical receiver unit includes an optical filter for filtering the .lambda..sub.1 wavelength data. Thus, a non-subscriber having the optical filter is prevented from receiving the pay-channel television signals, and a subscriber having no optical filter is able to receive both the pay-channel television signals and non-pay-channel television signals.
摘要翻译：用于CATV的付费频道传输系统具有光传输单元和光接收单元。光传输单元包括通过λ1波长半导体激光器光复用的付费频道电视信号和通过λ2波长半导体激光器光复用的非付费频道电视信号。光接收器单元包括用于滤波λ1波长数据的滤光器。因此，防止具有滤光器的非用户接收付费频道电视信号，并且没有滤光器的用户能够接收付费频道电视信号和非付费频道电视信号两者。

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