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    • 35. 发明授权
    • Monitor photodetector equipped optical modulator
    • 监控光电探测器配有光调制器
    • US07474812B2
    • 2009-01-06
    • US10566735
    • 2005-06-08
    • Kenji KawanoMasaya NanamiMakoto SaitoToru NakahiraYuji SatoSeiji Uchida
    • Kenji KawanoMasaya NanamiMakoto SaitoToru NakahiraYuji SatoSeiji Uchida
    • G02F1/035G02B6/10
    • G02F1/225G02F1/0123G02F2201/58
    • An optical modulator has, on a substrate having electro-optic effect, an optical waveguide including an input optical waveguide, two branching optical waveguides which branch a light beam incident to the input optical waveguide into two beams, two interaction optical waveguides which modulate a light beam phase by applying a voltage between a center electrode and ground electrodes, a multiplexing optical waveguide which multiplexes the light beams which propagate through the two interaction optical waveguides, and an output optical waveguide which is connected to the multiplexing optical waveguide through a multiplexing point. In the optical modulator, a high-order mode light beam which is generated by multiplexing the phase-modulated light beam and which is radiated from the multiplexing point to an inside of the substrate as two radiant light beams while the high-order mode light beam hardly propagates through the output optical waveguide, and at least one of the two radiant light beams is detected by a monitor photodetector. The output optical waveguide is formed while deformed in order to secure a space for mounting the monitor photodetector such that at least one of optical axes of the radiant light beams in a substrate end portion located on the output optical waveguide and an end of the output optical waveguide are separated from each other by a predetermined distance.
    • 光调制器在具有电光效应的基板上具有包括输入光波导的光波导,将入射到输入光波导的光束分支成两束的分支光波导,两个调制光的相互作用的光波导 通过在中心电极和接地电极之间施加电压,多路复用通过两个相互作用的光波导传播的光束的多路复用光波导和通过多路复用点连接到复用光波导的输出光波导。 在光调制器中,高阶模式光束是通过将相位调制光束多路复用而产生的,并且从多路复用点辐射到基板的内部作为两个辐射光束,而高阶模式光束 几乎不通过输出光波导传播,并且两个辐射光束中的至少一个被监视器光检测器检测。 输出光波导形成为变形,以便确保用于安装监视器光电检测器的空间,使得辐射光束的光轴中的至少一个位于位于输出光波导上的基板端部和输出光学波导的端部 波导彼此隔开预定距离。
    • 36. 发明申请
    • Monitor Photodetector Equipped Optical Modulator
    • 监控光电检测器配备的光调制器
    • US20080044123A1
    • 2008-02-21
    • US10566735
    • 2005-06-08
    • Kenji KawanoMasaya NanamiMakoto SaitoToru NakahiraYuji SatoSeiji Uchida
    • Kenji KawanoMasaya NanamiMakoto SaitoToru NakahiraYuji SatoSeiji Uchida
    • G02F1/035
    • G02F1/225G02F1/0123G02F2201/58
    • An optical modulator has, on a substrate having electro-optic effect, an optical waveguide including an input optical waveguide, two branching optical waveguides which branch a light beam incident to the input optical waveguide into two beams, two interaction optical waveguides which modulate a light beam phase by applying a voltage between a center electrode and ground electrodes, a multiplexing optical waveguide which multiplexes the light beams which propagate through the two interaction optical waveguides, and an output optical waveguide which is connected to the multiplexing optical waveguide through a multiplexing point. In the optical modulator, a high-order mode light beam which is generated by multiplexing the phase-modulated light beam and which is radiated from the multiplexing point to an inside of the substrate as two radiant light beams while the high-order mode light beam hardly propagates through the output optical waveguide, and at least one of the two radiant light beams is detected by a monitor photodetector. The output optical waveguide is formed while deformed in order to secure a space for mounting the monitor photodetector such that at least one of optical axes of the radiant light beams in a substrate end portion located on the output optical waveguide and an end of the output optical waveguide are separated from each other by a predetermined distance.
    • 光调制器在具有电光效应的基板上具有包括输入光波导的光波导,将入射到输入光波导的光束分支成两束的分支光波导,两个调制光的相互作用的光波导 通过在中心电极和接地电极之间施加电压,多路复用通过两个相互作用的光波导传播的光束的多路复用光波导和通过多路复用点连接到复用光波导的输出光波导。 在光调制器中,高阶模式光束是通过将相位调制光束多路复用而产生的,并且从多路复用点辐射到基板的内部作为两个辐射光束,而高阶模式光束 几乎不通过输出光波导传播,并且两个辐射光束中的至少一个被监视器光检测器检测。 输出光波导形成为变形,以便确保用于安装监视器光电检测器的空间,使得辐射光束的光轴中的至少一个位于位于输出光波导上的基板端部和输出光学波导的端部 波导彼此隔开预定距离。
    • 38. 发明申请
    • Exhaust gas cleaning device for internal combustion engine
    • 内燃机废气净化装置
    • US20070119128A1
    • 2007-05-31
    • US11604301
    • 2006-11-27
    • Kazuharu TochikawaSatoru NosakaMakoto Saito
    • Kazuharu TochikawaSatoru NosakaMakoto Saito
    • B01D46/00
    • F01N3/021F01N9/002Y02T10/20Y02T10/47Y10S55/10Y10S55/30
    • An exhaust gas cleaning device estimates a deposition amount of exhaust particulate matters in a collector based on deposition characteristics correlating the deposition amount with a pressure loss at the collector. The deposition characteristics define a first range from an initial point, at which the deposition amount is zero, to a transitional point and a second range over the transitional point. The pressure loss increases more gradually in the second range than in the first range as the deposition amount increases. The exhaust gas cleaning device corrects the deposition characteristics such that the transitional point approaches the initial point, the pressure loss at the initial point increases and an increase ratio of the pressure loss to the increase of the deposition amount in the second range increases as an ash deposition amount increases.
    • 废气净化装置基于将沉积量与集电体的压力损失相关联的沉积特性来估计集电体中的废气颗粒物质的沉积量。 沉积特性定义了从沉积量为零的初始点到过渡点的过渡点和第二范围的第一范围。 随着沉积量的增加,压力损失在第二范围内比在第一范围内逐渐增加。 排气净化装置校正沉积特性,使得过渡点接近初始点,初始点处的压力损失增加,并且压力损失与第二范围内的沉积量的增加的增加比率随着灰分而增加 沉积量增加。
    • 40. 发明申请
    • Method and apparatus for protecting digital data by double re-encryption
    • 通过双重重新加密来保护数字数据的方法和装置
    • US20060288426A1
    • 2006-12-21
    • US11480690
    • 2006-07-03
    • Makoto Saito
    • Makoto Saito
    • H04N7/16
    • H04N21/4334G11B20/00086G11B20/0021G11B20/00478G11B20/00536H04N5/913H04N21/4405H04N21/4408H04N2005/91364
    • A method and an apparatus ensuring protection of digital data are provided. In addition to re-encrypting the data using an unchangeable key, the data is double re-encrypted using a changeable key. The changeable key is used first and the unchangeable key is then used, or in another case, the unchangeable key is used first, and the changeable key is then used. In the aspect of embodiments, there is a case adopting a software, a case adopting a hardware, or a case adopting the software and the hardware in combination. The hardware using the unchangeable key developed for digital video is available. In adopting the software, encryption/decryption is performed in a region below the kernel which cannot be handled by the user to ensure the security for the program and for the key used. More concretely, encryption/decryption is performed with RTOS using a HAL and a device driver, i.e., a filter driver, a disk driver and a network driver, in an I/O manager. Either one of two filter drivers, with a file system driver between them, may be used. Further, both filter drivers may be used.
    • 提供确保数字数据保护的方法和装置。 除了使用不可更改的密钥重新加密数据之外,使用可更改密钥对数据进行双重重新加密。 首先使用可变键,然后使用不可更改的键,或者在另一种情况下,首先使用不可更改的键,然后使用可更改键。 在实施例的方面,存在采用软件,采用硬件的情况或采用软件和硬件的情况的组合的情况。 使用为数字视频开发的不可更改密钥的硬件可用。 在采用该软件时,在内核下方的区域内执行加密/解密,用户无法处理该区域,以确保程序的安全性以及使用的密钥。 更具体地,使用HAL和设备驱动程序(即,I / O管理器中的过滤器驱动程序,磁盘驱动器和网络驱动程序),使用RTOS执行加密/解密。 可以使用两个过滤器驱动程序中的一个,其间具有文件系统驱动程序。 此外,可以使用两个滤波器驱动器。