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公开(公告)号：US5973820A
公开(公告)日：1999-10-26
申请号：US080312
申请日：1998-05-18
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。
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公开(公告)号：US5768449A
公开(公告)日：1998-06-16
申请号：US707470
申请日：1996-09-04
申请人： Masaru Fuse , Katsuyuki Fujito
发明人： Masaru Fuse , Katsuyuki Fujito
IPC分类号： G02F1/01 , H04B10/07 , H04B10/2507 , H04B10/54 , H04B10/564 , H04B10/58 , H04B10/04
CPC分类号： H04B10/5051 , H04B10/504 , H04B10/58
摘要： When an electric signal outputted from a signal source (101) is converted to a light signal in an electrica-optical converting portion (104), a distortion component such as secondary or tertiary distortion is caused in the light signal to deteriorate transmission quality. Therefore, the light signal outputted from the electrica-optical converting portion (104) is further intensity-modulated with the same electric signal in an external light modulation portion (106) to forcibly cause a distortion which is out of phase with and of the same amplitude as the distortion component caused in the electrical-optical converting portion (104), thereby canceling the distortion component included in the light signal. Consequently, an optical transmission system capable of high-quality optical transmitting can be realized while employing a device having equivalent performance with the conventional devices.
摘要翻译： 当从信号源（101）输出的电信号被转换成电光转换部分（104）中的光信号时，在光信号中引起诸如二次或三次失真的失真分量，从而降低传输质量。 因此，从电光转换部分（104）输出的光信号在外部光调制部分（106）中用相同的电信号进一步进行强度调制，以强制引起与其相同的失真 振幅作为在电光转换部分（104）中引起的失真分量，从而消除包含在光信号中的失真分量。 因此，可以在采用与传统装置具有等效性能的装置的同时实现能够进行高质量光传输的光传输系统。
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83.发明授权
公开(公告)号：US5541757A
公开(公告)日：1996-07-30
申请号：US362802
申请日：1994-12-22
申请人： Masaru Fuse , Hiroaki Nakata , Katsuyuki Fujito
发明人： Masaru Fuse , Hiroaki Nakata , Katsuyuki Fujito
IPC分类号： G06F12/00 , H04B10/00 , H04B10/2507 , H04B10/272 , H04B10/54 , H04B10/556 , H04B10/572 , H04H20/33 , H04H20/38 , H04H20/69 , H04H20/76 , H04H20/79 , H04J14/00 , H04J14/02 , H04N7/173 , H04N7/22 , H04N21/2365 , H04N21/61 , H04N21/643 , H04N7/10
CPC分类号： H04H20/33 , H04H20/38 , H04H20/69 , H04H20/76 , H04H20/79 , H04J14/0298 , H04N21/47202 , H04N7/17318 , H04N7/22
摘要： Video signals for broadcasting service with a plurality of channels are frequency-multiplexed into a predetermined broadcasting band, and converted into optical signals by an optical transmitter. At the same time, video signals for VOD service requested by a plurality of subscribers are selected, taken out, frequency-multiplexed within the VOD band, and converted into optical signals by an optical modulator. These two types of optical signals are transmitted to subscribers through the optical network. In each subscriber's household, either broadcasting signals or video signals for VOD service are reproduced and desired programs are selected in the tuners.
摘要翻译： 具有多个频道的用于广播业务的视频信号被频率复用到预定的广播频带中，并由光发射机转换成光信号。 同时，由多个用户请求的VOD服务的视频信号被选择，取出，在VOD频带内进行频率复用，并由光调制器转换成光信号。 这两种类型的光信号通过光网络发送给用户。 在每个用户的家庭中，再现用于VOD服务的广播信号或视频信号，并且在调谐器中选择期望的节目。
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84.发明授权Data transmitting apparatus, data receiving apparatus and data communication apparatus 失效数据发送装置，数据接收装置和数据通信装置公开(公告)号：US08189787B2
公开(公告)日：2012-05-29
申请号：US12063003
申请日：2006-10-13
IPC分类号： H04L29/06
CPC分类号： H04K1/02 , H04L9/0656 , H04L9/0852
摘要： A data communication apparatus is highly concealable and significantly increases time necessary for an eavesdropper to analyze cipher text. A multi-level code generation section generates, by using predetermined key information, a multi-level code sequence in which a signal level changes so as to be random numbers. The multi-level processing section combines a multi-level code sequence and information data, and generates a multi-level signal having a level corresponding to a combination of the multi-level code sequence and the information data. In the multi-level code generation section, a random number sequence generation section generates a binary random number sequence by using the predetermined key information. A multi-level conversion section generates a multi-level code sequence from the binary random number sequence in accordance with a predetermined encoding rule.
摘要翻译： 数据通信设备是高度可隐藏的，并且显着增加了窃听者分析密文所需的时间。 多级代码生成部通过使用预定的密钥信息生成信号电平变化为随机数的多级代码序列。 多级处理部分组合多级代码序列和信息数据，并且生成具有与多级代码序列和信息数据的组合相对应的级别的多级信号。 在多级代码生成部中，随机数序列生成部使用规定的密钥信息生成二进制随机数序列。 多级转换部分根据预定的编码规则从二进制随机数序列生成多级代码序列。
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公开(公告)号：US08078059B2
公开(公告)日：2011-12-13
申请号：US12974484
申请日：2010-12-21
申请人： Masaru Fuse
发明人： Masaru Fuse
CPC分类号： H04J14/005 , H04B10/2581 , H04B10/502 , H04J14/02
摘要： An optical transmitting circuit (2) modulates multimode oscillation light using an information signal, subjects at least one oscillation-mode light beam of the multimode oscillation light to a predetermined operation, and outputting the result to an optical transmission channel. An optical receiving circuit (8) receives an optical signal transmitted through the optical transmission channel, subjects the received optical signal to an operation reverse to the predetermined operation to recover an optical signal as it was before being subjected to the predetermined operation, and converting the recovered optical signal into an electrical signal, thereby reproducing the information signal.
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公开(公告)号：US07965788B2
公开(公告)日：2011-06-21
申请号：US12127393
申请日：2008-05-27
IPC分类号： H04L25/34
CPC分类号： H04L9/0852 , H04L9/0838
摘要： To provide a receiving apparatus which is capable of demodulating information data from a multi-level modulated signal, which is generated by using a Y-00 protocol, without using high-performance component parts. In the receiving apparatus, the soft decision section 211 performs soft decision on the multi-level signal 22, in which a fixed decision level is used. A converted data identification section 214 performs logical decision on a value of the converted information data 25 in accordance with a highest-order bit of a multi-level code sequence 23 and a decision result 24 of the soft decision. A data reproduction section 215 performs an XOR operation between the converted information data 25 and a lowest-order bit of the multi-level code sequence 23, and outputs a resultant thereof as information data 23. Accordingly, the receiving apparatus identifies the information data 23 by using only some of the bits of the multi-level code sequence 23, whereby precision requirements for the component parts to be used can be eased.
摘要翻译： 提供一种能够通过使用Y-00协议产生的多电平调制信号来解调来自不使用高性能组件的信息数据的接收装置。 在接收装置中，软判决部分211对使用固定判定级别的多电平信号22执行软判决。 转换数据识别部分214根据多级代码序列23的最高位和软判决的判定结果24对转换的信息数据25的值进行逻辑判定。 数据再现部分215在转换的信息数据25和多级代码序列23的最低位之间执行XOR运算，并将其结果作为信息数据23输出。因此，接收装置识别信息数据23 通过仅使用多级代码序列23的一些比特，由此能够减轻要使用的组成部分的精度要求。
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公开(公告)号：US07907731B2
公开(公告)日：2011-03-15
申请号：US11664521
申请日：2005-10-05
IPC分类号： H04L9/12
CPC分类号： H04K3/825 , H04K1/02 , H04K3/43 , H04K3/44 , H04K3/45 , H04K2203/14 , H04L25/4917
摘要： A data communication system that enhances concealment by significantly increasing the time required for a wiretapper to decrypt a cipher text. The data communication system is constituted by connecting a data transmitting apparatus (13105) to a data receiving apparatus (11201) via a transmission path (110). In the data transmitting apparatus (13105), a multilevel encoding part (111) receives a predetermined first initial value (key information) and information data and generates a multilevel signal that varies in level substantially in a random number manner. A dummy signal superimposing part (118) superimposes a dummy signal on the multilevel signal. A modulating part (112) converts the multilevel signal to a modulated signal of a predetermined modulation form and transmits the modulated signal. The data receiving apparatus (11201) demodulates the modulated signal to output the multilevel signal, and receives a predetermined second initial value (key information) and the multilevel signal to reproduce the information data.
摘要翻译： 数据通信系统通过显着增加窃听者解密密文所需的时间来增强隐藏。 数据通信系统通过经由传输路径（110）将数据发送装置（13105）连接到数据接收装置（11201）而构成。 在数据发送装置（13105）中，多级编码部（111）接收预定的第一初始值（密钥信息）和信息数据，并生成基本上以随机数方式变化的多级信号。 虚拟信号叠加部分（118）将虚拟信号叠加在多电平信号上。 调制部分（112）将多电平信号转换为预定调制形式的调制信号并发送调制信号。 数据接收装置（11201）解调调制信号以输出多电平信号，并接收预定的第二初始值（密钥信息）和多电平信号以再现信息数据。
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公开(公告)号：US07900356B2
公开(公告)日：2011-03-08
申请号：US11512426
申请日：2006-08-30
申请人： Masaru Fuse
发明人： Masaru Fuse
IPC分类号： B21D53/10
CPC分类号： F16C33/543 , F16C19/364 , F16C43/065 , Y10T29/49636 , Y10T29/49663 , Y10T29/4968 , Y10T29/49682 , Y10T29/49686 , Y10T29/49687 , Y10T29/53104
摘要： A device is provided for assembling a tapered roller bearing, which allows even a tapered roller having a large taper angle to be easily assembled to a pocket of a cage. The tapered roller (35) is inserted into the pocket (33) with the larger-diameter side of the tapered roller (35) in the lead from the inner side of the cage (30) and moreover from the smaller-diameter annular portion side of the cage (30), by which the tapered rollers (35) are assembled to the cage (30).
摘要翻译： 提供了一种用于组装圆锥滚子轴承的装置，其允许即使具有大锥角的圆锥滚子也可以容易地组装到保持架的凹穴中。 圆锥滚子（35）从保持架（30）的内侧将导锥中的锥形滚子（35）的较大直径的一侧从保持架（30）的内侧插入到凹口（33）中，而且从较小直径的环形部分侧 （30）中，圆锥滚子（35）组装到保持架（30）上。
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公开(公告)号：US20100303234A1
公开(公告)日：2010-12-02
申请号：US12814886
申请日：2010-06-14
IPC分类号： H04L9/18
CPC分类号： H04L9/088 , H04L9/12 , H04L2209/08
摘要： A data communication apparatus wherein the stealthiness has been enhanced by significantly increasing the time required for a wiretapper to decrypt an encrypted text. The data communication apparatus is constituted by connecting a data transmitting apparatus and a data receiving apparatus via a transmission path. The data transmitting apparatus receives a first predetermined initial value (key information) and information data, generates a multi-valued signal the level of which varies substantially like a random number, and converts the multi-valued signal to a modulated signal of a predetermined modulation format for transmission. The data receiving apparatus demodulates the modulated signal to output the multi-valued signal, and then reproduces the information data from the multi-valued signal and a second predetermined initial value (key information) that is received.
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公开(公告)号：US20100158249A1
公开(公告)日：2010-06-24
申请号：US11997677
申请日：2006-09-21
IPC分类号： H04K1/00
CPC分类号： H04K1/02
摘要： Provided is a data communication apparatus which significantly increases time necessary for an eavesdropper to analyze cipher text and which is superior in concealability based on astronomical computational complexity. A multi-level signal, which is generated by using data and key information, has a minor amplitude modulation, which is based on a random number signal generated on a transmission side, overlapped thereon, and is then transmitted. On a receiving side, instead of data decision, three types of decision, i.e., “1”, “0” and “decision impossible”, are performed on a random number signal by using two threshold values whose interval is significantly wider than a modulation amplitude based on random numbers. Information of a bit whose decision is performed successively is returned to the transmission side, and the bit is used commonly as a new key. Accordingly, in a single transmitting/receiving apparatus, cipher text transmission and key distribution can be realized simultaneously.
摘要翻译： 提供了一种数据通信装置，其显着增加窃听者分析密文所需的时间，并且其基于天文计算复杂度优于隐藏性。 通过使用数据和密钥信息生成的多电平信号具有基于在发送侧产生的随机数信号重叠的随后数字信号的小幅度调制，然后被发送。 在接收侧，代替数据判定，通过使用两个阈值对其进行随机数信号的三种类型的判定，即“1”，“0”和“不可判定”，其间隔明显比调制宽 基于随机数的振幅。 连续执行其决定的位的信息返回到发送侧，该位通常用作新的键。 因此，在单个发送/接收装置中，可以同时实现密文传输和密钥分配。
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