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    • 1. 发明授权
    • Method and apparatus for rolling enrollment for signature verification
    • 用于滚动登记的方法和装置进行签名验证
    • US07676069B2
    • 2010-03-09
    • US12125396
    • 2008-05-22
    • Jianying HuGregory Fraser Russell
    • Jianying HuGregory Fraser Russell
    • G06K9/00G06F7/04
    • G06K9/00181G06K9/6255
    • Improved techniques are disclosed for adapting signature verification systems to natural signature variations. For example, a technique for adapting a signature verification system to variations in a signature of a user includes the following steps/operations. One or more signature samples are obtained from the user. The one or more obtained signature samples are submitted by the user as part of a regular authentication procedure associated with the signature verification system. A reference set of signature samples for the user is updated through selection of one or more signature samples from the obtained signature samples, such that the updated reference set is usable by the signature verification system for verifying subsequent signature samples attributed to the user. The selection of the one or more signature samples used to update the reference set is conditioned on a false rejection rate of the user when at least one obtained signature sample of the user is authenticated and on an identification check when no obtained signature sample is authenticated.
    • 公开了用于使签名验证系统适应自然签名变体的改进的技术。 例如,用于使签名验证系统适应用户签名中的变化的技术包括以下步骤/操作。 从用户获得一个或多个签名样本。 一个或多个获得的签名样本由用户提交,作为与签名验证系统相关联的常规认证过程的一部分。 通过从所获得的签名样本中选择一个或多个签名样本来更新用户的签名样本的参考集合,使得更新的参考集合可由签名验证系统用于验证归因于用户的后续签名样本。 用于更新参考集合的一个或多个签名样本的选择在用户的至少一个所获得的签名样本被认证时以及当没有获得的签名样本被认证时在识别检查上的用户的错误拒绝率。
    • 2. 发明授权
    • Calibration-free eye gaze tracking
    • 无校准眼注视追踪
    • US06578962B1
    • 2003-06-17
    • US09844682
    • 2001-04-27
    • Arnon AmirMyron Dale FlicknerDavid Bruce KoonsGregory Fraser Russell
    • Arnon AmirMyron Dale FlicknerDavid Bruce KoonsGregory Fraser Russell
    • A61B314
    • A61B3/113G06K9/0061
    • A system and method for calibration-free tracking of a user's eye gaze vector and point of regard even if substantial head movement or rotation occurs. The preferred embodiment includes two synchronized interlaced cameras, each viewing the user's eye and having on-axis lighting that is alternately modulated. An image difference between lighted and unlighted images of the eye is used to identify a user's pupil. A plane containing the gaze vector is defined by rotating a base plane through the angle in a camera image plane between a pupil center, a first glint, and a second glint. The intersection of two such planes (one from each camera), defines the gaze vector. The gaze position is the intersection of the gaze vector with the object being viewed by the user. Alternate embodiments are also described.
    • 即使发生实质的磁头移动或旋转,也可以使用用户的眼睛注视向量和观察点进行无校准跟踪的系统和方法。 优选实施例包括两个同步的隔行相机,每个相机都观看用户的眼睛并具有交替调制的轴上照明。 使用眼睛的点亮图像和未照明图像之间的图像差异来识别用户的瞳孔。 通过在瞳孔中心,第一闪烁和第二闪光之间的相机图像平面中旋转基座平面通过角度来限定包含注视向量的平面。 两个这样的平面(每个相机之一)的交点定义了注视矢量。 注视位置是注视矢量与用户正在观看的对象的交点。 还描述了替代实施例。
    • 3. 发明授权
    • Liquid crystal display device employing a guard plane between a layer for measuring touch position and common electrode layer
    • US06177918B1
    • 2001-01-23
    • US09364485
    • 1999-07-30
    • Evan George ColganJames Lewis LevineMichael Alan SchappertGregory Fraser Russell
    • Evan George ColganJames Lewis LevineMichael Alan SchappertGregory Fraser Russell
    • G09G336
    • G06F3/0412G02F1/134309
    • The present invention provides for touch input functionality in a liquid crystal display having a plurality of cells each comprising a first substrate having a common electrode integrated thereon, a second substrate having a pixel electrode integrated thereon, and liquid crystal material disposed between the common electrode and pixel electrode. A first conductive layer (signal layer) and second conductive layer (guard plane layer) are integrated onto the first substrate and disposed between the first substrate and the common electrode. Contact position of a touch input device with the first substrate is determined by applying a first signal to the signal layer. A second signal is applied to the guard plane layer to thereby lower capacitive coupling between the signal layer and the common electrode. The second signal may be generated by scaling amplitude and/or phase shifting the first signal. Response to the first signal is measured to determine contact position of the touch input device. Preferably, the portion of the signal layer disposed opposite the pixel electrode is a patterned layer of black matrix material, and the guard plane layer may be a transparent ITO layer. Alternatively, portions of the signal layer and guard plane layer disposed opposite the pixel electrode may be a patterned layer of black matrix material. A resistor network may be coupled to the signal layer to linearize resistance of the signal layer in a horizontal and vertical direction. By lowering the capacitive coupling between the signal layer and the common electrode, the guard plane layer and signal applied thereto enables the determination of contact position of a portion of the human body (such as a finger or a toe) based upon the measured response to the source signal. The present invention may be in display systems wherein a matrix of display elements are viewed from above a first side of a substrate and the display elements are disposed on the second side (i.e., the opposite side) of the substrate.
    • 4. 发明授权
    • Liquid crystal display device employing a guard plane between a layer
for measuring touch position and common electrode layer
    • 在用于测量触摸位置的层和公共电极层之间采用保护平面的液晶显示装置
    • US06057903A
    • 2000-05-02
    • US135959
    • 1998-08-18
    • Evan George ColganJames Lewis LevineMichael Alan SchappertGregory Fraser Russell
    • Evan George ColganJames Lewis LevineMichael Alan SchappertGregory Fraser Russell
    • G06F3/044G02F1/1333G02F1/1343G06F3/033G06F3/041G02F1/1335G09G5/00
    • G06F3/0412G02F1/134309
    • The present invention provides for touch input functionality in a liquid crystal display having a plurality of cells each comprising a first substrate having a common electrode integrated thereon, a second substrate having a pixel electrode integrated thereon, and liquid crystal material disposed between the common electrode and pixel electrode. A first conductive layer (signal layer) and second conductive layer (guard plane layer) are integrated onto the first substrate and disposed between the first substrate and the common electrode. Contact position of a touch input device with the first substrate is determined by applying a first signal to the signal layer. A second signal is applied to the guard plane layer to thereby lower capacitive coupling between the signal layer and the common electrode. Response to the first signal is measured to determine contact position of the touch input device. Preferably, the portion of the signal layer disposed opposite the pixel electrode is a patterned layer of black matrix material, and the guard plane layer may be a transparent ITO layer. Alternatively, portions of the signal layer and guard plane layer disposed opposite the pixel electrode may be a patterned layer of black matrix material.
    • 本发明提供了具有多个单元的液晶显示器中的触摸输入功能,每个单元包括集成有公共电极的第一基板,其上集成有像素电极的第二基板和设置在公共电极和 像素电极。 第一导电层(信号层)和第二导电层(保护平面层)被集成到第一基板上并且设置在第一基板和公共电极之间。 通过对信号层施加第一信号来确定触摸输入装置与第一基板的接触位置。 第二信号被施加到保护平面层,从而降低信号层和公共电极之间的电容耦合。 测量对第一信号的响应以确定触摸输入设备的接触位置。 优选地,与像素电极相对设置的信号层的部分是黑色矩阵材料的图案化层,并且保护平面层可以是透明ITO层。 或者,与像素电极相对设置的信号层和保护平面层的部分可以是黑矩阵材料的图案化层。
    • 6. 发明授权
    • Digital pen using ultrasonic tracking
    • 数字笔使用超声波跟踪
    • US06703570B1
    • 2004-03-09
    • US09567720
    • 2000-05-10
    • Gregory Fraser RussellBarton Allen SmithThomas Guthrie Zimmerman
    • Gregory Fraser RussellBarton Allen SmithThomas Guthrie Zimmerman
    • G09G500
    • G06F3/0433G01S5/18G01S5/30G01S11/16G06F3/0354Y10S367/907
    • A digital pen that has a writing tip includes an ultrasonic (US) transducer on a pen body that generates frames of US pulses toward a receiver base in response to an infrared (IR) synchronizing signal from the base. The first pulse of a frame is adjusted by a modulo of the US period &tgr; when the time of arrival (TOA) of the first pulse varies from an expected TOA by more than one-half &tgr;. The TOAs of successive ith pulses in the frame, which are one wavelength apart from each other, are adjusted forward in time by subtracting from each pulse TOA (i−1)&tgr;, and then several of the adjusted pulse TOAs in a single frame are averaged together to determine a frame TOA. The frame TOAs from plural receivers on the base are then triangulated to determine a pen position for that frame, with the pen positions being input to a handwriting recognition module.
    • 具有写入尖端的数字笔包括在笔体上的超声波(US)换能器,其响应于来自基座的红外(IR)同步信号而向接收器基座产生美国脉冲的帧。 当第一脉冲的到达时间(TOA)从预期的TOA变化超过一半tau时,帧的第一脉冲被调整为美国周期τ的模。 通过从每个脉冲TOA(i-1)τ减去然后在一个波长中的几个被调整的脉冲TOA中的几个调整的脉冲在时间上被调整在帧中的相继的第i个脉冲的TOA, 单帧平均在一起以确定帧TOA。 然后将基座上的多个接收器的帧TOA三角测量以确定该帧的笔位置,其中笔位置被输入到手写识别模块。