公开(公告)号：US5339315A

公开(公告)日：1994-08-16

申请号：US887475

申请日：1992-05-22

申请人： Kazuki Maeda ,  Kuniaki Utsumi ,  Katsuyuki Fujito

发明人： Kazuki Maeda ,  Kuniaki Utsumi ,  Katsuyuki Fujito

IPC分类号： H04H20/16 ,  H04H20/33 ,  H04H20/69 ,  H04H20/76 ,  H04H60/15 ,  H04H60/23 ,  H04N7/16 ,  H04N7/173 ,  H04N7/22 ,  H04N21/2365 ,  H04N21/238

CPC分类号： H04H60/15 ,  H04H20/16 ,  H04H20/33 ,  H04H20/69 ,  H04H20/76 ,  H04H60/16 ,  H04H60/23 ,  H04N21/2383 ,  H04N21/4382 ,  H04N7/163 ,  H04N7/17336 ,  H04N7/22

摘要： The present invention provides a cable broadcasting system and the transmission center employed therein. In the transmission center, plural images are divided into several groups in the same kinds and each image in one kind is repeated not simultaneously so that they are outputted as independent plural image signals, and the image that the subscribers have requested is selected from those plural image signals which is enciphered, modulated, and multiplexed to be transmitted in optical transmission lines through an available channel to the subscribers, while the transmission channel is validated as well as the enciphered image signal is deciphered at the subscribers' end in order to enable the subscribers to watch the image they have requested.

摘要翻译： 本发明提供一种有线广播系统及其中采用的传输中心。 在传输中心，将多个图像分成相同种类的几个组，并且一个类型的每个图像不被同时重复，使得它们作为独立的多个图像信号输出，并且从多个图像中选择用户已经请求的图像 图像信号被加密，调制和多路复用以在光传输线路中通过可用信道发送给用户，而传输信道被验证，并且加密的图像信号在用户端被解密，以使得能够 订阅者观看他们要求的图像。

公开(公告)号：US5574569A

公开(公告)日：1996-11-12

申请号：US345933

申请日：1994-11-28

申请人： Kuniaki Utsumi ,  Kazuki Maeda

发明人： Kuniaki Utsumi ,  Kazuki Maeda

IPC分类号： H04N5/85 ,  H04N5/93 ,  H04N5/76

CPC分类号： H04N5/9305 ,  H04N5/85

摘要： The present invention provides an optical disc comprising a main-image signal recording area holding a signal of a main image for a display, and a sub-image signal recording area holding a signal of a sub image to be displayed including an image of a time counted down in accordance with a progress of a sub-image signal reproduction. Furthermore it provides an image signal transmitting apparatus for repeatedly transmitting a main-image signal and a sub-image signal one after the other by utilizing such optical disc, the image signal transmitting apparatus comprising a image signal reproduction device for reproducing the main-image signal and the sub-image signal, a cycle time memory for memorizing a main-image signal transmission cycle, and a control device for obtaining a time difference between the cycle and time required for the main-image signal reproduction as well as control the image signal reproduction device.

摘要翻译： 本发明提供了一种光盘，其包括保持用于显示的主图像的信号的主图像信号记录区域和保持要显示的子图像的信号的子图像信号记录区域，包括时间图像 根据子图像信号再现的进度向下计数。 此外，它提供了一种图像信号发送装置，用于通过利用这种光盘重复地发送主图像信号和子图像信号，图像信号发送装置包括用于再现主图像信号的图像信号再现装置 和子图像信号，用于存储主图像信号发送周期的周期时间存储器，以及用于获得主图像信号再现所需的周期和时间之间的时间差以及控制图像信号的控制装置 再现设备。

公开(公告)号：US5432767A

公开(公告)日：1995-07-11

申请号：US987660

申请日：1992-12-09

申请人： Kuniaki Utsumi ,  Kazuki Maeda

发明人： Kuniaki Utsumi ,  Kazuki Maeda

IPC分类号： G11B27/10 ,  G11B7/0037 ,  H04N5/222 ,  H04N5/265 ,  H04N5/85 ,  H04N5/92 ,  H04N5/93 ,  H04N7/16 ,  G11B5/09

CPC分类号： H04N5/45 ,  H04N5/222 ,  H04N5/9205 ,  G11B7/0037 ,  H04N5/85 ,  H04N5/9305

摘要： The present invention provides an optical disc comprising a main-image signal recording area holding a signal of a main image for a display, and a sub-image signal recording area holding a signal of a sub image to be displayed including an image of a time counted down in accordance with a progress of a sub-image signal reproduction. Furthermore it provides an image signal transmitting apparatus for repeatedly transmitting a main-image signal and a sub-image signal one after the other by utilizing such optical disc, the image signal transmitting apparatus comprising a image signal reproduction device for reproducing the main-image signal and the sub-image signal, a cycle time memory for memorizing a main-image signal transmission cycle, and a control device for obtaining a time difference between the cycle and time required for the main-image signal reproduction as well as control the image signal reproduction device.

摘要翻译： 本发明提供了一种光盘，其包括保持用于显示的主图像的信号的主图像信号记录区域和保持要显示的子图像的信号的子图像信号记录区域，包括时间图像 根据子图像信号再现的进度向下计数。 此外，它提供了一种图像信号发送装置，用于通过利用这种光盘重复地发送主图像信号和子图像信号，图像信号发送装置包括用于再现主图像信号的图像信号再现装置 和子图像信号，用于存储主图像信号发送周期的周期时间存储器，以及用于获得主图像信号再现所需的周期和时间之间的时间差以及控制图像信号的控制装置 再现设备。

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：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。

公开(公告)号：US6118479A

公开(公告)日：2000-09-12

申请号：US235486

申请日：1999-01-22

申请人： Kazuki Maeda ,  Kuniaki Utsumi ,  Susumu Morikura

发明人： Kazuki Maeda ,  Kuniaki Utsumi ,  Susumu Morikura

IPC分类号： H04J14/02 ,  H04L1/20 ,  H04N7/22 ,  H04N17/00 ,  H04B17/00 ,  H04K1/10 ,  H04L23/02

CPC分类号： H04N7/22 ,  H04L1/20 ,  H04N17/00 ,  H04J14/0298

摘要： In FIG. 5, a plurality of signal sources 21.sub.1 to 21.sub.N each generate a carrier with different frequencies. A pulse signal generating portion 23 generates a pulse signal with the same period and time width as those of a horizontal synchronizing signal in NTSC system color television broadcasting. Delay devices 32.sub.1 to 32.sub.N delay timing of the pulse signal for a randomly predetermined delay amount. Level adjuster 52.sub.1 to 52.sub.N generate a modulating signal by adjusting each pulse base of the delayed pulse signal for a level within a range between 12.5% and 74.375% with respect to a pulse top. Modulators 42.sub.1 to 42.sub.N output a signal obtained by modulating the carrier with the modulating signal. A multiplex portion 24 multiplexes the modulated signals to output a resultant signal as a test signal. The error rate of a QAM signal is evaluated with the test signal. It is therefore possible to evaluate the error rate of the QAM signal in a signal state approximate at the maximum to a state of an actual AM video signal (that is, analogous distribution characteristics of the multiplex signal amplitude). In the error rate evaluation method according to an embodiment of the present invention, it is thus possible to accurately evaluate the error rate of the QAM signal under the strictest conditions, which may occur in the actual, AM video signal, thereby ensuring the reliability of the entire CATV system.

摘要翻译： 在图 如图5所示，多个信号源211〜21N分别生成不同频率的载波。 脉冲信号生成部23生成与NTSC制彩色电视广播中的水平同步信号相同的周期和时间宽度的脉冲信号。 延迟装置321至32N延迟脉冲信号的定时以随机预定的延迟量。 电平调节器521至52N通过相对于脉冲顶部调整在12.5％至74.375％之间的范围内的电平来调节延迟脉冲信号的每个脉冲基，产生调制信号。 调制器421至42N输出通过调制信号调制载波获得的信号。 复用部分24复用调制信号以输出结果信号作为测试信号。 用测试信号评估QAM信号的误码率。 因此，可以以最大到实际AM视频信号的状态（即，复用信号幅度的类似分布特性）近似的信号状态来评估QAM信号的误码率。 在根据本发明的实施例的错误率评估方法中，因此可以在实际的AM视频信号中可能发生的最严格条件下准确地评估QAM信号的错误率，从而确保可靠性 整个CATV系统。

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：US20140290320A1

公开(公告)日：2014-10-02

申请号：US14232008

申请日：2012-07-10

申请人： Kazuki Maeda ,  Hideki Tezuka ,  Yoshitsugu Okuyama ,  Atsuchi Maekawa ,  Shinichi Yano

发明人： Kazuki Maeda ,  Hideki Tezuka ,  Yoshitsugu Okuyama ,  Atsuchi Maekawa ,  Shinichi Yano

IPC分类号： B21C9/00 ,  C10M111/04

CPC分类号： B21C9/005 ,  C10M105/24 ,  C10M107/04 ,  C10M111/04 ,  C10M169/04 ,  C10M2201/041 ,  C10M2201/043 ,  C10M2201/062 ,  C10M2201/066 ,  C10M2201/084 ,  C10M2201/085 ,  C10M2201/087 ,  C10M2201/103 ,  C10M2205/022 ,  C10M2205/0225 ,  C10M2205/024 ,  C10M2205/0245 ,  C10M2205/043 ,  C10M2207/0406 ,  C10M2207/1213 ,  C10M2207/125 ,  C10M2207/126 ,  C10M2209/0625 ,  C10M2209/0845 ,  C10M2209/1013 ,  C10M2209/1023 ,  C10M2213/023 ,  C10M2213/0623 ,  C10M2217/0206 ,  C10M2217/0265 ,  C10M2217/0443 ,  C10M2221/025 ,  C10N2210/01 ,  C10N2210/02 ,  C10N2230/06 ,  C10N2230/10 ,  C10N2230/64 ,  C10N2240/401 ,  C10N2250/121

摘要： Provided is an innovative belt-shaped lubricating material for dry wiredrawing which not only can be used under severe wiredrawing processing conditions such as those of high temperature/high pressure/high speed as well as conventional powdered or granular lubricants for dry wiredrawing but also can cope with diameter reduction to a wide range of wire diameters ranging from a small diameter to a large diameter and a wide range of linear speeds ranging from a low speed to a high speed, has excellent functionalities such as lubricity, followability, spreadability, adhesiveness, heat resistance, processability, workability, safety, durability and productivity irrespective of a processed shape, is effective in improving work environments and is friendly to the global environment.The belt-shaped lubricating material for dry wiredrawing includes a film containing 10 to 90% by weight of a metal salt of a saturated fatty acid and 10 to 90% by weight of a thermoplastic resin.

摘要翻译： 提供了一种用于干式拉丝的创新带状润滑材料，不仅可以在高温/高压/高速等严格的拉丝加工条件下使用，还可以用于干法拉丝的常规粉末或颗粒润滑剂，但也可以应付 直径减小到从小直径到大直径以及范围从低速到高速的宽范围的线径的宽范围具有优异的功能性，例如润滑性，随动性，铺展性，粘合性，热 阻力，加工性，可加工性，安全性，耐久性和生产率，而不管加工形状如何，在改善工作环境中是有效的，并且对全球环境友好。 用于干拉丝的带状润滑材料包括含有10至90重量％的饱和脂肪酸的金属盐和10至90重量％的热塑性树脂的膜。

公开(公告)号：US07010720B2

公开(公告)日：2006-03-07

申请号：US10098437

申请日：2002-03-18

申请人： Kazuki Maeda ,  Hiroshi Yokota ,  Tatsuro Ikoma

发明人： Kazuki Maeda ,  Hiroshi Yokota ,  Tatsuro Ikoma

IPC分类号： G06F11/00

CPC分类号： G06F11/1402

摘要： A reception apparatus records a content distributed from a content distribution apparatus on a hard disk. Following an instruction from a viewer, the reception apparatus reproduces the content. The reception apparatus transmits management information including identification information about the content recorded on the hard disk to a management apparatus. The management apparatus stores the information in a management information storage. When the hard disk of the reception apparatus fails, a replacement hard disk is attached to the management apparatus. The management apparatus retrieves, based on the stored management information, the same content as the content recorded on the hard disk of the reception apparatus from a content distribution apparatus, etc., and records the retrieved content on the replacement hard disk. The hard disk of the reception apparatus is then replaced with the replacement hard disk with the content recorded thereon.

摘要翻译： 接收装置将从内容分发装置分发的内容记录在硬盘上。 根据观看者的指示，接收装置再现内容。 接收装置将包括关于记录在硬盘上的内容的识别信息的管理信息发送到管理装置。 管理装置将信息存储在管理信息存储器中。 当接收装置的硬盘出现故障时，更换硬盘被安装在管理装置上。 管理装置基于所存储的管理信息，从内容分发装置等检索与记录在接收装置的硬盘上的内容相同的内容，并将检索到的内容记录在替换硬盘上。 接收装置的硬盘被替换成具有记录内容的替换硬盘。

公开(公告)号：US5351148A

公开(公告)日：1994-09-27

申请号：US67217

申请日：1993-05-26

申请人： Kazuki Maeda ,  Naoki Ishiyama ,  Hiroaki Nakata

发明人： Kazuki Maeda ,  Naoki Ishiyama ,  Hiroaki Nakata

IPC分类号： H04B10/516 ,  H04B10/2507 ,  H04B10/54 ,  H04B10/556 ,  H04B10/61 ,  H04B14/00 ,  H04J14/02 ,  H04L5/06 ,  H04N7/22

CPC分类号： H04N7/22 ,  H04B10/504 ,  H04B10/5053 ,  H04B10/541 ,  H04B10/58 ,  H04J14/0298 ,  H04L5/06

摘要： An optical transmission system provides digital signals which have added bits for error correction by an encoder which are converted into 16-QAM signals with a predetermined carrier frequency by a modulator, and then frequency division muitiplexed with an AM signal so as to be inputted to an optical-electric converter. When the total sum of the light modulation indices of signals to be transmitted is over 1, a light modulation index of an M-QAM signal is set by calculating the light modulation index that marks the onset of diverging from the error rate given by a ratio between receiver noise power and the M-QAM signal power while considering a light modulation index corresponding to a usable transmission margin. The multiplexed signals are transmitted via optical fiber and converted into electric signals by a photo receiver, demodulated by a demodulator, and then outputted after having their errors corrected by an error corrector.

摘要翻译： 光传输系统提供数字信号，该信号已经由编码器添加了用于纠错的比特，其通过调制器被转换成具有预定载波频率的16-QAM信号，然后与AM信号进行频分复用以被输入到 光电转换器。 当要发送的信号的光调制指数的总和超过1时，通过计算从由比率给出的误码率来标记发散开始的光调制指数来设置M-QAM信号的光调制指数 在接收机噪声功率和M-QAM信号功率之间考虑与可用传输余量对应的光调制指数。 多路复用信号通过光纤传输并通过光接收机转换成电信号，由解调器解调，然后在由误差校正器校正其误差之后输出。