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公开(公告)号：US6055086A
公开(公告)日：2000-04-25
申请号：US123016
申请日：1998-07-27
Applicant: Colin Soutar , Richard D. Juday
Inventor： Colin Soutar , Richard D. Juday
Abstract: A method and apparatus for modulating a light beam in an optical processing system is described. Preferably, an electrically-controlled polarizer unit and/or an analyzer unit are utilized in combination with a spatial light modulator and a controller. Preferably, the spatial light modulator comprises a pixelated birefringent medium such as a liquid crystal video display. The combination of the electrically controlled polarizer unit and analyzer unit make it simple and fast to reconfigure the modulation described by the Jones matrix of the spatial light modulator. A particular optical processing objective is provided to the controller. The controller performs calculations and supplies control signals to the polarizer unit, the analyzer unit, and the spatial light modulator in order to obtain the optical processing objective.
Abstract translation: 描述了用于调制光学处理系统中的光束的方法和装置。 优选地，电控偏振器单元和/或分析器单元与空间光调制器和控制器组合使用。 优选地，空间光调制器包括诸如液晶视频显示器的像素化双折射介质。 电控偏光器单元和分析器单元的组合使得简单和快速地重新配置由空间光调制器的Jones矩阵描述的调制。 向控制器提供特定的光学处理目标。 控制器执行计算，并向偏振器单元，分析器单元和空间光调制器提供控制信号，以获得光学处理目标。
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Patent Agency Ranking
公开(公告)号：US06219794B1
公开(公告)日：2001-04-17
申请号：US08947224
申请日：1997-10-08
Applicant: Colin Soutar , Danny B. Roberge , Alexei Stoianov , Rene M. Gilroy , Vijayakumar Bhagavatula
Inventor： Colin Soutar , Danny B. Roberge , Alexei Stoianov , Rene M. Gilroy , Vijayakumar Bhagavatula
IPC: G06F1214
CPC classification number: H04L9/0866 , H04L2209/34
Abstract: This invention describes a secure method for consistently reproducing a digital key using a biometric, such as a fingerprint. The digital key is linked to the biometric only through a secure block of data, known as the protected filter. The key cannot be released from the protected filter other than via the interaction with the correct biometric image. Once generated, the digital key may be used in a system as an encryption/decryption key, or as a personal identification number (PIN).
Abstract translation: 本发明描述了使用诸如指纹之类的生物特征来一致地再现数字密钥的安全方法。 数字键仅通过安全的数据块（称为受保护的过滤器）与生物特征相关联。 除了通过与正确的生物特征图像的交互之外，钥匙不能从受保护的过滤器释放。 一旦生成，数字密钥可以在系统中用作加密/解密密钥，或作为个人识别号码（PIN）。
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公开(公告)号：US5832091A
公开(公告)日：1998-11-03
申请号：US711855
申请日：1996-03-14
Applicant: George J. Tomko , Colin Soutar , Gregory J. Schmidt
Inventor： George J. Tomko , Colin Soutar , Gregory J. Schmidt
CPC classification number: G07F7/1008 , G06K9/00006 , G06Q20/341 , G06Q20/40145 , G07C9/00087 , H04L9/0662 , H04L9/0866 , H04L2209/805
Abstract: A public key cryptographic system is implemented as follows. In an enrolment apparatus, the unique number for use in generating the public key and private key of the system is generated by manipulation of fingerprint information of a subscriber. A filter is then generated which is a function both of the Fourier transform of the subscriber's fingerprint(s) and of the unique number. This filter is stored on a subscriber card. When the subscriber wishes to generate his public or private key, he inputs his card to a card reader of an apparatus and places his finger(s) on a fingerprint input. The apparatus generates an optical Fourier transform from the fingerprint input. The Fourier transform signal is incident on to a spatial light modulator programmed with the filter information from the card. An inverse transform is generated from the filtered signal and this is used to regenerate the unique number. The apparatus also has a subsystem for utilizing the private key to decrypt an input encrypted message.
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公开(公告)号：US5541994A
公开(公告)日：1996-07-30
申请号：US301677
申请日：1994-09-07
Applicant: George J. Tomko , Colin Soutar , Gregory J. Schmidt
Inventor： George J. Tomko , Colin Soutar , Gregory J. Schmidt
CPC classification number: G07F7/1008 , G06K9/00006 , G06Q20/341 , G06Q20/40145 , G07C9/00087 , H04L9/0662 , H04L9/0866 , H04L2209/805
Abstract: A public key cryptographic system is implemented as follows. In an enrolment apparatus, the unique number for use in generating the public key and private key of the system is generated by manipulation of fingerprint information of a subscriber. A filter is then generated which is a function both of the Fourier transform of the subscriber's fingerprint(s) and of the unique number. This filter is stored on a subscriber card. When the subscriber wishes to generate his public or private key, he inputs his card to a card reader of an apparatus and places his finger(s) on a fingerprint input. The apparatus generates an optical Fourier transform from the fingerprint input. The Fourier transform signal is incident on to a spatial light modulator programmed with the filter information from the card. An inverse transform is generated from the filtered signal and this is used to regenerate the unique number. The apparatus also has a subsystem for utilizing the private key to decrypt an input encrypted message.
Abstract translation: 公钥加密系统如下实现。 在登记装置中，通过操作用户的指纹信息来生成用于生成系统的公开密钥和私钥的唯一编号。 然后生成滤波器，该滤波器是用户指纹和唯一号码的傅里叶变换的函数。 该过滤器存储在用户卡上。 当用户希望生成他的公钥或私钥时，他将他的卡输入到设备的读卡器，并将他的手指放在指纹输入上。 该设备从指纹输入产生光学傅立叶变换。 傅里叶变换信号入射到用卡片过滤器信息编程的空间光调制器上。 从滤波的信号产生逆变换，并且这被用于重新生成唯一的数字。 该装置还具有用于利用私钥对输入的加密消息进行解密的子系统。
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5.发明授权
公开(公告)号：US5761330A
公开(公告)日：1998-06-02
申请号：US482404
申请日：1995-06-07
Applicant: Alexei Stoianov , Colin Soutar , George J. Tomko
Inventor： Alexei Stoianov , Colin Soutar , George J. Tomko
CPC classification number: G06K9/00006
Abstract: A hybrid optical-digital technique is provided for automatic fingerprint verification. A coherent optical beam modulated with the characteristics of a fingerprint image passes through the lens performing an optical Fourier transform. The intensity array that represents the Fourier power spectrum is recorded and processed. In enrolment, several arrays related to the same finger are captured and processed. A template which is unique for each fingerprint is generated and stored. Using the set of arrays captured in enrolment and a set of templates from a standard database, the processor calculates dependences of false rejection rate and false acceptance rate upon a metric of comparison. The metric is obtained by calculating a relative distance between two arrays in Hilbert space. An individual threshold of verification for a person to be enroled is set and stored together with the template. In verification, the metric of comparison between the processed array derived from a fingerprint to be verified and the pre-stored template is determined and compared with the pre-stored individual threshold.
Abstract translation: 提供了一种用于自动指纹验证的混合光数字技术。 用指纹图像的特征调制的相干光束通过执行光学傅里叶变换的透镜。 表示傅里叶功率谱的强度阵列被记录和处理。 在注册中，捕获并处理与同一手指相关的多个阵列。 生成并存储每个指纹唯一的模板。 使用在注册中捕获的数组集合和一组来自标准数据库的模板，处理器根据比较度量计算错误拒绝率和错误接受率的依赖关系。 通过计算希尔伯特空间中的两个阵列之间的相对距离来获得度量。 设置并存储与被模仿的人的个人验证阈值。 在验证中，确定从要验证的指纹导出的经处理阵列与预先存储的模板之间的比较度量，并与预先存储的各个阈值进行比较。
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公开(公告)号：US5680460A
公开(公告)日：1997-10-21
申请号：US512491
申请日：1995-08-08
Applicant: George J. Tomko , Colin Soutar , Gregory J. Schmidt
Inventor： George J. Tomko , Colin Soutar , Gregory J. Schmidt
CPC classification number: G07F7/1008 , G06K9/00006 , G06Q20/341 , G06Q20/40145 , G07C9/00087 , H04L9/0866
Abstract: A key generation system is implemented as follows. In an enrolment apparatus, a unique number for use with PIN operated machines or public key cryptography systems is generated by manipulation of fingerprint information of a subscriber. A filter is then generated which is a function both of the Fourier transform of the subscriber's fingerprint(s) and of the unique number. This filter is stored on a subscriber card. When the subscriber wishes to generate his key, he inputs his card to a card reader of an apparatus and places his finger(s) on a fingerprint input. The apparatus generates an optical Fourier transform from the fingerprint input. The Fourier transform signal is incident on to a spatial light modulator programmed with the filter information from the card. An inverse transform is generated from the filtered signal and this is used to regenerate the key that will be used as the PIN in a PIN operated device, or as the private key cryptography system.
Abstract translation: 密钥生成系统如下实现。 在登记装置中，通过操纵用户的指纹信息来生成用于PIN操作的机器或公钥密码系统的唯一编号。 然后生成滤波器，该滤波器是用户指纹和唯一号码的傅里叶变换的函数。 该过滤器存储在用户卡上。 当用户希望产生密钥时，他将他的卡输入到设备的读卡器，并将他的手指放在指纹输入上。 该设备从指纹输入产生光学傅立叶变换。 傅里叶变换信号入射到用卡片过滤器信息编程的空间光调制器上。 从经滤波的信号产生逆变换，并且用于重新生成将在PIN操作的设备中用作PIN的密钥，或者作为私钥加密系统。
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