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。

公开(公告)号：US07076166B2

公开(公告)日：2006-07-11

申请号：US10212389

申请日：2002-08-05

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

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

IPC分类号： H04J14/00

CPC分类号： H04J14/0227 ,  H04J14/0226 ,  H04J14/0241 ,  H04J14/0246 ,  H04J14/025 ,  H04J14/0282 ,  H04L7/0008 ,  H04L7/0075

摘要： 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

申请人： Masaru Fuse ,  Kuniaki Utsumi ,  Satoshi Furusawa

发明人： Masaru Fuse ,  Kuniaki Utsumi ,  Satoshi Furusawa

IPC分类号： H04B1004

CPC分类号： H03C3/00

摘要： 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.

摘要翻译： 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：US06512621B1

公开(公告)日：2003-01-28

申请号：US09140658

申请日：1998-08-26

申请人： Masaru Fuse ,  Kuniaki Utsumi ,  Satoshi Furusawa

发明人： Masaru Fuse ,  Kuniaki Utsumi ,  Satoshi Furusawa

IPC分类号： H04B1004

CPC分类号： H03C3/00

摘要： 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.

摘要翻译： 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lambd1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lambd2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，并且在两个光电转换部分106之间输出拍频信号 光信号是与第一光信号和第二光信号之间的波长差DELTAlambd（= | lambd1-lambd2 |）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：US5539657A

公开(公告)日：1996-07-23

申请号：US54195

申请日：1993-04-30

申请人： Kuniaki Utsumi ,  Hiroaki Nakata ,  Susumu Morikura ,  Hiroaki Yamamoto ,  Kazuki Maeda ,  Masaru Fuse

发明人： Kuniaki Utsumi ,  Hiroaki Nakata ,  Susumu Morikura ,  Hiroaki Yamamoto ,  Kazuki Maeda ,  Masaru Fuse

IPC分类号： H04B10/27 ,  H04B10/29 ,  H04B10/54 ,  H04B10/556 ,  H04N5/00 ,  H04N5/44 ,  H04N7/10 ,  H04N7/16 ,  H04N7/22 ,  H04N21/61 ,  H04N21/647 ,  H04J4/00

CPC分类号： H04N7/16 ,  H04N7/22

摘要： A picture image distributing apparatus provided within a passenger moving vehicle, consists of: a head end portion for multichannel FDM picture image signals; an electrical optical for converting the FDM picture image signals into optical signals; an optical amplifier for optically amplifying the optical outputs; one optical fiber transmission path connected to optical taps of unequal distribution for branching halfway on one portion of the optical power except for the branching at a final point, an optical/electrical converter for receiving optical signals branched at the final point or halfway so as to convert them into electrical signals; and a passenger seat picture image receiving terminal connected to the optical/electrical converter so as to receive the electrical signals.

摘要翻译： 设置在乘客移动车辆内的图像分配装置包括：用于多通道FDM图像信号的头端部分; 用于将FDM图像信号转换成光信号的电光学装置; 用于光学放大光输出的光放大器; 一个光纤传输路径连接到不同分布的光学抽头，用于除了最终点之间的分支之外的一部分光功率的一部分上的分支;光/电转换器，用于接收在最终点或中途分支的光信号，以便 将其转换为电信号; 以及连接到光/电转换器的乘客座位图像接收终端，以便接收电信号。

公开(公告)号：US06909855B2

公开(公告)日：2005-06-21

申请号：US10734186

申请日：2003-12-15

申请人： Masaru Fuse ,  Kuniaki Utsumi ,  Satoshi Furusawa

发明人： Masaru Fuse ,  Kuniaki Utsumi ,  Satoshi Furusawa

IPC分类号： H04B10/516 ,  H03C3/00 ,  H04B10/2507 ,  H04B10/548 ,  H04B10/564 ,  H04B10/572 ,  H04B10/61 ,  H04B10/06

CPC分类号： H03C3/00

摘要： 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 λ1 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 λ2 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 Δλ(=|λ1−λ2|) 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.

摘要翻译： 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。 将两个光信号组合，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，并且以对应于波长差的频率在作为宽带FM信号的两个光信号之间输出拍频信号 第一光信号和第二光信号之间的偏差（= |λ1-λ2 |）。 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：US6078412A

公开(公告)日：2000-06-20

申请号：US724835

申请日：1996-10-03

申请人： Masaru Fuse ,  Kuniaki Utsumi

发明人： Masaru Fuse ,  Kuniaki Utsumi

IPC分类号： H04J14/00 ,  H04J1/00 ,  H04J14/02 ,  H04L27/26

CPC分类号： H04L27/2602 ,  H04J14/0298

摘要： In a system for simultaneously optically transmitting a plurality of digital modulation signals using an analog SCM transmission technique, the degree of degradation of the waveform of a transmission signal or the magnitude of distortion thereof differs depending on bands, whereby there arises a difference in transmission quality among channels. Therefore, an analog signal to be transmitted is converted into a digital signal by an analog-to-digital converting portion, after which the digital signal is divided, by a hierarchy separating portion, into a plurality of groups of digital information depending on degrees of importance in constructing the original analog signal. A modulating portion digitally modulates carriers having different frequencies which are respectively assigned to the groups of digital information. A multiplexing portion frequency-multiplexes and simultaneously optically transmits all the digital modulation signals. In this case, the carrier corresponding to the digital information having a higher degree of importance is set on a lower frequency side, and the carrier corresponding to the digital information having a lower degree of importance is set on a higher frequency side. Consequently, it is possible to minimize the effect of the degradation and the distortion caused in the transmission on received and reproduced data, whereby high-quality transmission is possible.

摘要翻译： 在使用模拟SCM传输技术同时光发送多个数字调制信号的系统中，发送信号的波形的劣化程度或失真的大小根据频带而不同，从而导致传输质量的差异 在渠道之间。 因此，要被发送的模拟信号通过模数转换部分被转换为数字信号，之后数字信号被分层分离部分划分成多组数字信息，取决于数字信号的度数 构建原始模拟信号的重要性。 调制部分对分别分配给数字信息组的不同频率的载波进行数字调制。 复用部分对所有数字调制信号进行频率复用并同时光学传输。 在这种情况下，在较低频率侧设置与具有较高重要度的数字信息相对应的载波，并且将较低重要度的数字信息对应的载波设置在较高频率侧。 因此，可以将传输中引起的劣化和失真的影响最小化在接收和再现数据上，从而可以实现高质量的传输。

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。

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。

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。