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    • 1. 发明授权
    • Method, circuit, and apparatus for mitigating effects of
wavelength-dependent atmospheric transmission characteristics on
atmospheric optical telecommunication
    • 用于减轻波长依赖的大气传播特性对大气光通信的影响的方法,电路和装置
    • US5506716A
    • 1996-04-09
    • US361644
    • 1994-12-22
    • Kanji MiharaAkira HirashimaTakashi OtobeYujiro Ito
    • Kanji MiharaAkira HirashimaTakashi OtobeYujiro Ito
    • H04B10/572H04B10/07H04B10/11H04B10/112H04B10/2507H04B10/293H04B10/564H04B10/00
    • H04B10/1125
    • A method, circuit, and apparatus for mitigating effects of wavelength-dependent atmospheric transmission characteristics on an atmospheric optical telecommunication system. The system comprises two atmospheric optical telecommunication units communicating with one another using light propagated through the atmosphere. Each of the atmospheric telecommunication units includes an optical transmitter having a laser generating a transmitted light beam for reception by the other, and an optical receiver. The optical receiver generates an electrical signal in response to a received light beam received from the other of the atmospheric optical telecommunication units. In the method, an increase in noise above a normal noise level is detected in the electrical signal, and a flag signal is generated in response. The increase in noise is due to the received light beam having a wavelength at which the atmosphere has a wavelength-dependent transmission characteristic. In response to the flag signal, the wavelength of the transmitted light beam is changed to a wavelength at which the transmission characteristic of the atmosphere is less wavelength-dependent.
    • 一种用于减轻大气光通信系统上波长依赖大气传播特性的影响的方法,电路和装置。 该系统包括使用通过大气传播的光彼此通信的两个大气光通信单元。 每个大气通信单元包括具有产生用于由另一个接收的透射光束的激光的光发射器和光接收器。 光接收器响应从另一个大气光通信单元接收的接收光束产生电信号。 在该方法中,在电信号中检测到高于正常噪声电平的噪声增加,并且响应地产生标志信号。 噪声的增加是由于接收的光束具有大气具有波长相关传输特性的波长。 响应于标志信号,透射光束的波长被改变为大气的透射特性与波长相关的波长。
    • 5. 发明授权
    • Encryption/decryption device and method
    • 加密/解密设备和方法
    • US07706532B2
    • 2010-04-27
    • US10564465
    • 2004-07-06
    • Yujiro ItoTsutomu ShimosatoKazunobu Tsujikawa
    • Yujiro ItoTsutomu ShimosatoKazunobu Tsujikawa
    • H04N7/167
    • H04L9/0637H04L9/12H04L2209/125H04N21/2347H04N21/4307H04N21/4405
    • An encryption apparatus for encrypting input picture data with high secrecy and restoration against an error of encrypted data. An EXOR circuit calculates input picture data and a pseudo random sequence and obtains encrypted data. The obtained encrypted data are held in a first FF circuit. The first FF circuit is reset for each line. Counters count for each line or each frame and are reset for each frame or at the beginning of a program. An encryption device encrypts outputs of a second FF circuit that holds a fixed value, the counters and the first FF circuit with a key and generates a pseudo random sequence. A shift register divides the bit sequence. The EXOR circuit calculates the output of the shift register and the input picture data and obtains encrypted data. Since the encrypted output is fed back, data cannot be stolen using a successive input of the same data. In addition, since an encrypted output that is fed back is reset for each line, the encrypted output can be recovered from an error.
    • 一种加密装置,用于针对加密数据的错误高密度地加密输入图像数据并进行恢复。 EXOR电路计算输入图像数据和伪随机序列,并获得加密数据。 获得的加密数据保存在第一FF电路中。 第一个FF电路为每一行复位。 计数器计数每行或每一帧,并为每个帧或程序开始时重置。 加密装置用密钥加密保持固定值的第二FF电路的输出,计数器和第一FF电路,并产生伪随机序列。 移位寄存器分配位序列。 EXOR电路计算移位寄存器和输入图像数据的输出,并获得加密数据。 由于加密输出被反馈,所以不能使用相同数据的连续输入来窃取数据。 此外,由于反馈的加密输出针对每行复位,所以加密的输出可以从错误中恢复。
    • 6. 发明授权
    • Auto-focus apparatus, focus adjusting method, image capturing apparatus and image capturing method
    • 自动对焦装置,聚焦调整方法,摄像装置和摄像方法
    • US07453512B2
    • 2008-11-18
    • US11113530
    • 2005-04-25
    • Yujiro ItoSusumu Kurita
    • Yujiro ItoSusumu Kurita
    • H04N5/232G03B13/34
    • H04N5/23212G02B7/32
    • An auto-focus apparatus, a focus adjusting method, an image capturing apparatus and an image capturing method make it possible to perform accurate focus adjustment on a subject for which the focus should be adjusted. The auto-focus apparatus emits an irradiation wave from emitting means for irradiation to a subject while changing an incident angle of the irradiation wave, detects an incident angle of a reflected wave of the irradiation wave reflected by the subject, incident on light receiving means positioned corresponding to the emitting means, determines based on the emitting angle and the incident angle whether or not the subject is a subject for which the focus is adjusted, and adjusts the focus on the subject when determining that the subject is the subject for which the focus should be adjusted, thereby making it possible to accurately adjust the focus on the subject for which the focus should be adjusted.
    • 自动对焦装置,聚焦调整方法,图像拍摄装置和图像捕获方法使得可以对应该调整焦点的被摄体执行准确的对焦调整。 自动聚焦装置在改变照射波的入射角的同时从发射装置发射照射波,检测入射到受光装置上的被摄体反射的照射波的反射波的入射角 对应于发光装置,基于发射角度和入射角度来确定被摄体是否是被调整对象的被摄体,并且当确定被摄体是被摄体的焦点时,对被摄体进行焦点调节 应该进行调整,从而能够精确地调整焦点应该调整的对象。
    • 8. 发明申请
    • Transmitting apparatus, receiving apparatus, and data transmission system
    • 发射装置,接收装置和数据传输系统
    • US20070177718A1
    • 2007-08-02
    • US10572162
    • 2004-09-16
    • Tsutomu ShimosatoYujiro ItoKazunobu Tsujikawa
    • Tsutomu ShimosatoYujiro ItoKazunobu Tsujikawa
    • H04L9/28
    • H04N21/4405H04L9/0662H04L9/14H04L9/3263H04N7/1675H04N21/2347H04N21/835
    • Video data exploitation by alteration of data is prevented. An extractor 111 extracts valid video data in data 110 and predetermined data in the data. An inserter 114 inserts an arithmetic operation result of the predetermined data by an arithmetic operation unit 113 into the valid video data encrypted by an encryptor 112. An output of the inserter 114 is supplied to an extractor 144 through a transmission path 120. The encrypted valid video data and arithmetic operation resultant data of the arithmetic operation unit 113 are extracted. An arithmetic operation unit 143 executes the same arithmetic operation as that of the arithmetic operation unit 113 to data corresponding to the data used in the arithmetic operation unit 113 from the valid video data decrypted by a decryptor 141 and extracted by an extractor 144. A comparator 145 compares an output of the arithmetic operation unit 143 with an arithmetic operation result extracted from data 140. When both of them do not coincide, it is determined that there is a possibility that the transmission data has been altered. An output of an another-output generator 146 is outputted as output data 148.
    • 通过改变数据来防止视频数据的利用。 提取器111提取数据110中的有效视频数据和数据中的预定数据。 插入器114将由算术运算单元113将预定数据的算术运算结果插入由加密器112加密的有效视频数据。 插入器114的输出通过传输路径120提供给提取器144。 提取算术运算部113的加密的有效视频数据和算术运算结果数据。 算术运算单元143对与算术运算单元113中使用的数据相对应的数据,与由解密器141解密并由提取器144提取的有效视频数据执行与算术运算单元113相同的算术运算。 比较器145将算术运算单元143的输出与从数据140提取的算术运算结果进行比较。 当它们都不一致时,确定存在发送数据已被改变的可能性。 输出另一输出发生器146的输出作为输出数据148。
    • 9. 发明申请
    • Autofocus device and method
    • 自动对焦装置和方法
    • US20060232700A1
    • 2006-10-19
    • US11403291
    • 2006-04-13
    • Yujiro ItoHidekazu SutoShinji Takemoto
    • Yujiro ItoHidekazu SutoShinji Takemoto
    • G03B13/00
    • G03B13/36G02B7/38H04N5/23212
    • Autofocus device has a lens-driving unit, a focal-point-position-detecting unit that detects a position of a focal point of the lens, and a distance measurement sensor. The sensor measures a distance to a subject based on a reference field of view for distance measurement and a field of view for distance measurement being offset outwardly from the reference field of view and/or a field of view for distance measurement having a field of view that is different from the reference field of view. The device has a control unit that controls the lens-driving unit to drive the lens to meet the position of the focal point of the lens to an in-focus position thereof. The focusing operation starts by setting the lens drive based on a representative value selected from measured distance results obtained by the distance measurement sensor and the position of the focal point of the lens.
    • 自动对焦装置具有透镜驱动单元,检测透镜的焦点的位置的焦点位置检测单元和距离测量传感器。 传感器基于用于距离测量的参考视场来测量与被摄体的距离,并且用于距离测量的视野从参考视野向外偏移和/或用于具有视场的距离测量的视野 这与参考视野不同。 该装置具有控制单元,其控制透镜驱动单元以驱动透镜以将透镜的焦点的位置与其对准位置相符。 基于从距离测量传感器获得的测量距离结果和透镜焦点的位置中选择的代表值来设置透镜驱动器开始聚焦操作。
    • 10. 发明申请
    • Autofocus device and method
    • 自动对焦装置和方法
    • US20060232699A1
    • 2006-10-19
    • US11403186
    • 2006-04-12
    • Hidekazu SutoYujiro ItoShinji Takemoto
    • Hidekazu SutoYujiro ItoShinji Takemoto
    • G03B13/00
    • H04N5/23212G02B7/285G02B7/365
    • Autofocus device has a lens-driving unit, a focal-point-position-detecting unit that detects a position of a focal point of the lens, a distance measurement sensor that measures a distance to a subject, and a focus-evaluation-value-calculating unit that calculates a focus evaluation value using a frequency component of an image signal in a particular region in an imaging frame. The device also has a user interface and a control unit that controls the lens-driving unit to drive the lens based on the focus evaluation value or the focus evaluation value, the position of a focal point of the lens, and a measured distance result measured by the distance measurement sensor, thereby meeting the position of the focal point to an in-focus position. The control unit controls the lens-driving unit, the distance measurement sensor and the focus-evaluation-value-calculating unit based on the autofocus contents set by the user interface.
    • 自动对焦装置具有透镜驱动单元,检测透镜的焦点的位置的焦点位置检测单元,测量与被摄体的距离的距离测量传感器,以及焦点评价值检测单元, 计算单元,其使用成像帧中的特定区域中的图像信号的频率分量来计算焦点评估值。 该装置还具有用户界面和控制单元,其基于焦点评估值或焦点评估值,镜头的焦点位置和测量的距离结果来控制透镜驱动单元驱动透镜 通过距离测量传感器,从而将焦点的位置满足到对焦位置。 控制单元基于由用户界面设定的自动对焦内容来控制镜头驱动单元,距离测量传感器和焦点评估值计算单元。