公开(公告)号：US20060045054A1

公开(公告)日：2006-03-02

申请号：US10530651

申请日：2003-10-17

Applicant: Kuniaki Utsumi ,  Hiroaki Yamamoto ,  Kouichi Masuda ,  Tsutomu Niiho ,  Mariko Nakaso ,  Hiroyuki Sasai

Inventor： Kuniaki Utsumi ,  Hiroaki Yamamoto ,  Kouichi Masuda ,  Tsutomu Niiho ,  Mariko Nakaso ,  Hiroyuki Sasai

IPC: H04Q7/24

CPC classification number: H04W4/18 ,  H04B10/25754 ,  H04W84/12 ,  H04W88/04 ,  H04W92/02

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US5973820A

公开(公告)日：1999-10-26

申请号：US080312

申请日：1998-05-18

Applicant: Masaru Fuse ,  Kuniaki Utsumi ,  Seiichiro Kawashima ,  Koji Kikushima

Inventor： Masaru Fuse ,  Kuniaki Utsumi ,  Seiichiro Kawashima ,  Koji Kikushima

IPC: G02F2/00 ,  H03C3/36 ,  H04B10/2507 ,  H04B10/516 ,  H04B10/54 ,  H04B10/548 ,  H04B10/564 ,  H04B10/572 ,  H04B10/61 ,  G02F1/23

CPC classification number: H03C3/36

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US5204767A

公开(公告)日：1993-04-20

申请号：US772486

申请日：1991-10-07

Applicant: Hiroaki Nakata ,  Kuniaki Utsumi ,  Kazuki Maeda

Inventor： Hiroaki Nakata ,  Kuniaki Utsumi ,  Kazuki Maeda

IPC: G06F21/10 ,  H04J14/02 ,  H04K1/00 ,  H04N7/16 ,  H04N7/167 ,  H04N7/171 ,  H04N7/22

CPC classification number: H04B10/69 ,  H04B10/675 ,  H04J14/0226 ,  H04J14/0234 ,  H04J14/0298 ,  H04N7/16 ,  H04N7/22 ,  H04J14/0282

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US07460829B2

公开(公告)日：2008-12-02

申请号：US10530976

申请日：2004-07-22

Applicant: Kuniaki Utsumi ,  Hiroaki Yamamoto ,  Kouichi Masuda ,  Tsutomu Niiho ,  Mariko Nakaso ,  Kazuo Tanaka ,  Hiroyuki Sasai

Inventor： Kuniaki Utsumi ,  Hiroaki Yamamoto ,  Kouichi Masuda ,  Tsutomu Niiho ,  Mariko Nakaso ,  Kazuo Tanaka ,  Hiroyuki Sasai

IPC: H04B7/185

CPC classification number: H04W52/143 ,  H04B10/25754 ,  H04W52/24 ,  H04W88/085

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US07076166B2

公开(公告)日：2006-07-11

申请号：US10212389

申请日：2002-08-05

Applicant: Masaru Fuse ,  Toru Shiozaki ,  Yoshikazu Ishii ,  Hiroaki Asano ,  Kuniaki Utsumi ,  Katsumi Iwatsuki ,  Hitoshi Uematsu ,  Shigeru Kuwano ,  Mitsuhiro Teshima

Inventor： Masaru Fuse ,  Toru Shiozaki ,  Yoshikazu Ishii ,  Hiroaki Asano ,  Kuniaki Utsumi ,  Katsumi Iwatsuki ,  Hitoshi Uematsu ,  Shigeru Kuwano ,  Mitsuhiro Teshima

IPC: H04J14/00

CPC classification number: H04J14/0227 ,  H04J14/0226 ,  H04J14/0241 ,  H04J14/0246 ,  H04J14/025 ,  H04J14/0282 ,  H04L7/0008 ,  H04L7/0075

Abstract: This invention discloses an optical burst transmission system in which an optical generator generates Type 1 lightwaves having different wavelengths corresponding to transmission lines and having undergone intensity modulation with obtained data; a broad spectrum optical generator generates, by incorporating Type 2 lightwaves, a Type 3 lightwave using a fewer light emitting devices than the number of the Type 1 lightwaves, each Type 2 lightwaves having a corresponding wavelength apart from Type 1 lightwave's wavelength with an FSR interval and having undergone the intensity modulation with clock signals; an optical multiplexer multiplexes the Type 1 and Type 3 lightwaves to output the combination to each transmission line; and an optical routing unit extracts, from the combination, pairs of one Type 1 lightwave and one Type 2 lightwave having the corresponding wavelength, and guides pairs to each transmission line corresponding to the Type 1 lightwave's wavelength in each pair.

公开(公告)号：US06687465B2

公开(公告)日：2004-02-03

申请号：US10294759

申请日：2002-11-15

Applicant: Masaru Fuse ,  Kuniaki Utsumi ,  Satoshi Furusawa

Inventor： Masaru Fuse ,  Kuniaki Utsumi ,  Satoshi Furusawa

IPC: H04B1004

CPC classification number: H03C3/00

Abstract: A branch portion 101 branches an inputted electrical signal into an in-phase signal and an opposite phase signal which have an opposite relation as to a phase. A first FM laser 104 converts the in-phase signal into an optical frequency-modulated signal (a first optical signal) having a center wavelength &lgr;1 and then outputs the resultant signal. A second FM laser 105 converts the opposite phase signal into an optical frequency-modulated signal (a second signal) having a center wavelength &lgr;2 and then outputs the resultant signal. The two optical signals are combined and then inputted into an optical-electrical converting portion 106. The optical-electrical converting portion 106 subjects the inputted optical signals to optical heterodyne detection by its square-law detection characteristic, and outputs a beat signal between the two optical signals which is a wide-band FM signal at a frequency corresponding to a wavelength difference &Dgr;&lgr;(=|&lgr;1−&lgr;2|) between the first optical signal and the second optical signal. It is thus possible to increase frequency deviation of the outputted FM signal and thus greatly improve a CNR.

Abstract translation: 分支部101将输入的电信号分支成与相位相反的同相信号和相反相位信号。 第一FM激光器104将同相信号转换成具有中心波长λ1的光调制信号（第一光信号），然后输出所得到的信号。 第二FM激光器105将相反相位信号转换成具有中心波长λ2的光频调制信号（第二信号），然后输出所得到的信号。 两个光信号被组合，然后输入到光电转换部分106.光电转换部分106通过其平方律检测特性使输入的光信号进行光外差检测，并在两个光信号之间输出拍频信号 光信号，其是与第一光信号和第二光信号之间的波长差Deltalλ（= |λ1-λ2|）对应的频率的宽带FM信号。 因此，可以增加输出的FM信号的频率偏差，从而大大提高CNR。

公开(公告)号：US5729281A

公开(公告)日：1998-03-17

申请号：US443699

申请日：1995-05-18

Applicant: Kuniaki Utsumi ,  Hiroyuki Sasai ,  Hiroaki Yamamoto ,  Manabu Tanabe ,  Katsuyuki Fujito

Inventor： Kuniaki Utsumi ,  Hiroyuki Sasai ,  Hiroaki Yamamoto ,  Manabu Tanabe ,  Katsuyuki Fujito

IPC: 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 classification number: H04H60/90 ,  H04H20/38 ,  H04H20/76 ,  H04H20/77 ,  H04H20/78 ,  H04N7/173

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US5644389A

公开(公告)日：1997-07-01

申请号：US557478

申请日：1995-11-14

Applicant: Hiroaki Yamamoto ,  Kuniaki Utsumi ,  Katsuyuki Fujito

Inventor： Hiroaki Yamamoto ,  Kuniaki Utsumi ,  Katsuyuki Fujito

IPC: G01M11/02 ,  G01M11/00 ,  H04B10/07 ,  H04B10/077 ,  H04B10/079 ,  H04B10/54 ,  G01N21/88

CPC classification number: G01M11/333 ,  G01M11/335

Abstract: A signal for which the amplitude of envelope becomes substantially 0 only for a certain period of time within the time of a period T, and a measured signal having a certain amplitude are synthesized, and the synthesized signal is optically transmitted. When a plurality of reflection points are present on a light transmission line, there is an increase in harmonic distortion or intermodulation distortion as well as in cross modulation distortion after receiving. This increase in cross modulation distortion causes an increase in variation of amplitude of the measured signal. In such a case, it is possible to calculate the distance between, and/or reflectance of, reflection points present on end faces of optical elements and/or connecting points of optical fibers on the light transmission line by investigating first periodical characteristics of variation of the transmitted measured signal during transmission relative to the change in central light frequency of the signal light, or investigating second periodical characteristics of variation of the transmitted measured signal during transmission corresponding to the change in the frequency of the measured signal.

Abstract translation: 在周期T的时间内，信号的幅度变为基本为0的信号在一段时间内被合成，并且合成具有一定幅度的测量信号，并且合成信号被光学传输。 当在光传输线上存在多个反射点时，谐波失真或互调失真以及接收后的交叉调制失真增加。 交叉调制失真的这种增加导致测量信号的幅度变化的增加。 在这种情况下，可以通过调查光传输线上的光学元件的端面和/或光纤的连接点上的反射点之间的距离和/或反射率来计算第一周期特性 在传输期间发射的测量信号相对于信号光的中心光频率的变化，或者调查在传输期间发射的测量信号的变化的第二周期特性，对应于测量信号的频率的变化。

公开(公告)号：US07650112B2

公开(公告)日：2010-01-19

申请号：US10530651

申请日：2003-10-17

Applicant: Kuniaki Utsumi ,  Hiroaki Yamamoto ,  Kouichi Masuda ,  Tsutomu Niiho ,  Mariko Nakaso ,  Hiroyuki Sasai

Inventor： Kuniaki Utsumi ,  Hiroaki Yamamoto ,  Kouichi Masuda ,  Tsutomu Niiho ,  Mariko Nakaso ,  Hiroyuki Sasai

IPC: H04B7/15

CPC classification number: H04W4/18 ,  H04B10/25754 ,  H04W84/12 ,  H04W88/04 ,  H04W92/02

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20060239630A1

公开(公告)日：2006-10-26

申请号：US10546618

申请日：2004-11-22

Applicant: Kazutoshi Hase ,  Hiroaki Yamamoto ,  Kuniaki Utsumi

Inventor： Kazutoshi Hase ,  Hiroaki Yamamoto ,  Kuniaki Utsumi

IPC: G02B6/00

CPC classification number: H04B10/25759 ,  H03F3/08

Abstract: An optical fiber radio transmission system is provided which is capable of considerably improving the received dynamic range of radio signals and, in addition, is capable of optically transmitting radio signals while preventing the deterioration of transmission performance and the loss of linearity of an input signal more easily. A received level detection section 111 detects which one of predetermined levels, i.e., Level I, Level II, and Level III, the received level of a radio signal received by an antenna 400 falls under. A signal control section 112 performs an amplification/attenuation process on the radio signal in accordance with the detected level. A control information sending section 113 superimposes control information indicating the detected level on a primary signal obtained after the amplification/attenuation process. This signal is converted to an optical signal and transmitted. An optical to electrical conversion section 211 converts the optical signal received from a transmitting unit to an electrical signal. A control information extraction section 212 extracts the level from the control information, which has been superimposed on the primary signal. A signal control section 213 performs an amplification/attenuation process on the primary signal in accordance with the extracted level.

Abstract translation: 提供了一种光纤无线电传输系统，其能够显着地改善无线电信号的接收动态范围，并且还能够光学地传输无线电信号，同时防止传输性能的恶化和输入信号的线性度的损失更多 容易。 接收电平检测部分111检测由天线400接收的无线电信号的接收电平的预定电平即电平I，电平II和电平III中的哪一个下降。 信号控制部分112根据检测到的电平对无线电信号进行放大/衰减处理。 控制信息发送部113将表示检测电平的控制信息叠加在放大/衰减处理后获得的主信号上。 该信号被转换成光信号并发送。 光电转换部分211将从发送单元接收的光信号转换为电信号。 控制信息提取部212从叠加在主信号上的控制信息中提取电平。 信号控制部213根据提取的电平对主信号进行放大/衰减处理。