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    • 2. 发明授权
    • Apparatus for detecting the focus adjusting state of an objective lens
by performing filter processing
    • 用于通过进行滤波处理来检测物镜的聚焦调整状态的装置
    • US5367153A
    • 1994-11-22
    • US969352
    • 1992-10-30
    • Yasuo SudaAkira YamadaYukio OdakaAkira Akashi
    • Yasuo SudaAkira YamadaYukio OdakaAkira Akashi
    • G02B7/28G01J1/20
    • G02B7/28
    • A focus detection apparatus includes an optical system for forming first and second optical distributions associated with object images whose relative positional relationship is changed in accordance with an imaging state of an imaging optical system subjected to focus detection, a photoelectric conversion element, having a plurality of picture elements, for outputting first and second signals respectively corresponding to the first and second optical distributions, and a calculating unit for performing filter processing of the first and second signals, sequentially displacing the first and second signals relative to each other on the calculation basis, calculating an evaluation amount representing a coincidence between the first and second signals at the relatively displaced positions, obtaining positional deviations between the first and second object images on the basis of a change in evaluation amount, and detecting the imaging state of the imaging optical system on the basis of the deviations. The filter processing is performed using a filter determined by the relatively displaced positions.
    • 焦点检测装置包括:光学系统,用于形成与根据成像光学系统进行焦点检测的成像状态相对地改变相对位置关系的对象图像相关联的第一和第二光学分布;光电转换元件,具有多个 用于输出分别对应于第一和第二光学分布的第一和第二信号的图像元素,以及用于执行第一和第二信号的滤波处理的计算单元,在计算的基础上依次移位第一和第二信号, 计算表示相对位移位置处的第一和第二信号之间的一致性的评估量,基于评估量的变化获得第一和第二对象图像之间的位置偏差,并且检测成像光学系统的成像状态 的基础 e偏差。 使用由相对移位的位置确定的滤波器来执行滤波处理。
    • 5. 发明授权
    • Digital signature generating apparatus, method, computer program and computer-readable storage medium
    • 数字签名生成装置,方法,计算机程序和计算机可读存储介质
    • US07543153B2
    • 2009-06-02
    • US10797827
    • 2004-03-10
    • Satoru WakaoAkira Akashi
    • Satoru WakaoAkira Akashi
    • H04L9/32H04L9/00H04H60/32
    • H04L9/0891H04L9/16H04L9/3247
    • A digital signature generating apparatus generates a digital signature of digital data. The digital signature generating apparatus includes a receiving unit, the secret key changing unit and a digital signature generating unit. The receiving unit receives one of a first command and a second command. The first command includes information indicating one of a plurality of secret keys, and the plurality of secret keys are included in the digital signature generating apparatus. The secret key changing unit changes a secret key used by the digital signature generating apparatus to a secret key specified by the first command, if the first command is received by the receiving unit. The digital signature generating unit generates the digital signature of the digital data from a hash value extracted from the second command, if the second command is received by the receiving unit.
    • 数字签名生成装置生成数字数据的数字签名。 数字签名产生装置包括接收单元,秘密密钥改变单元和数字签名生成单元。 接收单元接收第一命令和第二命令之一。 第一命令包括指示多个秘密密钥中的一个的信息,并且多个密钥包括在数字签名生成装置中。 如果接收单元接收到第一命令,则秘密密钥改变单元将由数字签名生成装置使用的秘密密钥改变为由第一命令指定的秘密密钥。 如果第二命令由接收单元接收,则数字签名生成单元从从第二命令提取的哈希值生成数字数据的数字签名。
    • 6. 发明授权
    • View point detecting device
    • 视点检测装置
    • US5848175A
    • 1998-12-08
    • US387614
    • 1995-02-13
    • Akira Akashi
    • Akira Akashi
    • G03B13/02G06T7/00G06K9/00
    • G06T7/004G03B13/02G03B2213/025
    • A disclosed device detects an observer's visual axis bi-directionally, comprising a light receiver for receiving light from the observer's eyeball via multiple photoelectric transfer element arrays, a first storage means for storing positions of photoelectric transfer elements outputting signals representing Purkinje images; a second storage for referencing the photoelectric transfer signals originating from multiple photoelectric transfer elements arranged in the horizontal and vertical directions of the light receiver, and storing the positions of photoelectric transfer elements that indicate characteristic points representing the pupil of an eyeball, and a detector for detecting a view point using the positional information stored in the first and second storages.
    • 所公开的设备双向地检测观察者的视觉轴,包括用于经由多个光电转移元件阵列接收来自观察者的眼球的光的光接收器,用于存储输出表示Purkinje图像的信号的光电转移元件的位置的第一存储装置; 用于参考源自在光接收器的水平和垂直方向上布置的多个光电转移元件的光电转移信号并存储指示表示眼球瞳孔的特征点的光电转移元件的位置的第二存储器,以及用于 使用存储在第一和第二存储器中的位置信息来检测视点。