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    • 4. 发明申请
    • Authentication Device And Authentication Method
    • 验证设备和验证方法
    • US20100278397A1
    • 2010-11-04
    • US12675207
    • 2008-08-27
    • Takeo TobeKenzo MizunoTetsuji TsujiIsao WatanabeIsao KikuchiTadahito Watakai
    • Takeo TobeKenzo MizunoTetsuji TsujiIsao WatanabeIsao KikuchiTadahito Watakai
    • G06T7/00
    • G06K9/00033A61B5/117A61B5/1171A61B5/1172A61B5/489A61B5/6826A61B5/6838G06K9/2027G06K2009/0006G06K2009/00932
    • An authentication can be carried out with high accuracy even when there is a change in an amount of incident light, the air temperature, the body temperature, or a manner to place a finger on a scanner.An authentication apparatus includes: a light source that emits an infrared light beam onto a finger; image pick-up means 8 that picks up an image of the finger by using a transmitted light beam, and thus outputs an image signal; low-frequency brightness component extracting means 61 that extracts a low-frequency brightness component signal from the image signal; middle-frequency brightness component extracting means 62 that extracts a middle-frequency brightness component signal from the image signal; correction means 63 that corrects the middle-frequency brightness component signal using the low-frequency brightness component signal; quaternary-value converting means 64 that converts the corrected middle-frequency brightness component signal into quaternary values such that the quaternary values are distributed at a predetermined ratio; storage means 7 that stores a quaternary-valued image obtained by the quaternary value conversion; correlation coefficient calculating means 65 that calculates a correlation coefficient between a quaternary-valued evaluation image as an object of evaluation obtained by the quaternary value conversion, and a quaternary-valued registered image beforehand stored in the storage means, by using a pattern matching method based on a normalized correlation method; and judgment means 66 that judges whether or not the quaternary-valued evaluation image and the quaternary-valued registered image are images picked up from the same finger on a basis of the correlation coefficient.
    • 即使当入射光量,空气温度,体温变化,或者将手指放置在扫描仪上的方式时,也能够高精度地进行认证。 认证装置包括:将红外光束发射到手指上的光源; 图像拾取装置8,其通过使用透射光束拾取手指的图像,从而输出图像信号; 低频亮度分量提取装置61,从图像信号中提取低频亮度分量信号; 中频亮度分量提取装置62,从图像信号中提取中频亮度分量信号; 校正装置63,其使用低频亮度分量信号校正中频亮度分量信号; 四进制值转换装置64,其将校正的中频亮度分量信号转换为四进制值,使得四进制值以预定比例分布; 存储装置7,存储通过四次值转换获得的四值值图像; 相关系数计算装置65,其通过使用基于模式匹配方法来计算作为通过四进制值转换获得的评估对象的四元值评估图像和预先存储在存储装置中的四值注册图像之间的相关系数, 采用归一化相关法; 以及判断装置66,其判断四值估值图像和四值值登记图像是否是基于相关系数从同一手指拾取的图像。
    • 10. 发明授权
    • Recording/apparatus and method utilizing a plurality of heads for
continuously recording information and reproducing the same with delay
    • 记录/装置和方法利用多个头用于连续记录信息并以延迟再现该信息
    • US5566146A
    • 1996-10-15
    • US506252
    • 1995-07-21
    • Takeo Tobe
    • Takeo Tobe
    • G11B7/00G11B7/004G11B19/02G11B20/10G11B27/028G11B27/10H04N5/44H04N5/783H04N5/85H04N5/937H04B1/20
    • H04N5/4448G11B19/02G11B20/10G11B27/028H04N5/85H04N5/937H04N5/783
    • An information recording and reproducing device for recording and reproducing information on and from a plurality of rewritable disk-type recording media includes: a plurality of recording/reproducing device for receiving and recording input information onto each of the recording medium and for reproducing and outputting the recorded information from each of the recording media with a predetermined delay time, each of the recording/reproducing device having a plurality of heads for recording and reproducing information, switching device for alternately selecting one of the reproduced information outputted from the plurality of recording/reproducing device, and control device for controlling the plurality of recording/reproducing device and the switching device. The control device permits the plurality of recording/reproducing device to continuously record the input information onto the plurality of disk-type recording media, and permits the switching device to alternately selecting one of the reproduced information so as to continuously output information reproduced by the plurality of recording/reproducing device.
    • 一种用于在多个可重写盘型记录介质上记录和再现信息的信息记录和再现装置包括:多个记录/再现装置,用于在每个记录介质上接收和记录输入信息,并且用于再现和输出 每个记录媒体具有预定的延迟时间,每个记录/再现装置具有用于记录和再现信息的多个头部;切换装置,用于交替地选择从多个记录/再现输出的再现信息之一 装置和控制装置,用于控制多个记录/再现装置和开关装置。 控制装置允许多个记录/再现装置将输入信息连续地记录到多个盘型记录介质上,并且允许切换装置交替地选择再现信息之一,以便连续地输出由多个盘型记录介质再现的信息 的记录/再现设备。