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    Type size dependent anti-aliasing in sub-pixel precision rendering systems
    42.
    发明授权
    Type size dependent anti-aliasing in sub-pixel precision rendering systems 失效
    子像素精度渲染系统中类型大小相关的抗锯齿

    公开(公告)号：US07224372B2

    公开(公告)日：2007-05-29

    申请号：US10970156

    申请日：2004-10-21

    申请人： David C. Brown ,  John C. Platt ,  Michael Duggan ,  Gregory Hitchcock ,  Beat Stamm

    发明人： David C. Brown ,  John C. Platt ,  Michael Duggan ,  Gregory Hitchcock ,  Beat Stamm

    IPC分类号： G09G5/00

    CPC分类号： G09G5/28 ,  G06T11/203 ,  G09G3/2074 ,  G09G5/30 ,  G09G2340/0457

    摘要： Methods and systems for selecting different anti-aliasing filters to be applied to objects of image data rendered with pixel sub-component precision based on the attributes of the objects of the graphics image. For example, when rendering a character traditional anti-aliasing applied in the direction parallel to the striping of the pixel sub-components is adapted to the unique requirements of different character font sizes such that a large amount of anti-aliasing is applied to large font sizes while a small amount of anti-aliasing is provided for characters at small font sizes. Displaced sampling is utilized to determine the alpha values for a plurality of vertical samples for each RGB pixel sub-component. The selected anti-aliasing filter is applied to the alpha values to determine the luminous intensity values of the RGB pixel sub-components.

    摘要翻译： 用于基于图形图像的对象的属性来选择要应用于以像素子分量精度呈现的图像数据的对象的不同抗混叠滤波器的方法和系统。 例如，当渲染字符在与像素子组件的条纹平行的方向上应用的传统抗锯齿适应于不同字符字体​​大小的独特要求时，大量抗锯齿被应用于大字体 尺寸，同时为小字体尺寸的字符提供少量抗锯齿。 利用位移采样来确定每个RGB像素子分量的多个垂直样本的α值。 将所选的抗混叠滤波器应用于α值以确定RGB像素子分量的发光强度值。

    Adjusting character dimensions to compensate for low contrast character features
    46.
    发明授权
    Adjusting character dimensions to compensate for low contrast character features 有权
    调整字符尺寸以补偿低对比度特征

    公开(公告)号：US06360023B1

    公开(公告)日：2002-03-19

    申请号：US09565217

    申请日：2000-05-05

    申请人： Claude Betrisey ,  Bodin Dresevic ,  John C. Platt

    发明人： Claude Betrisey ,  Bodin Dresevic ,  John C. Platt

    IPC分类号： G06F1500

    CPC分类号： G06T11/203 ,  G09G5/28 ,  G09G2320/0276 ,  G09G2320/0285 ,  G09G2340/0457 ,  G09G2340/10

    摘要： Methods and systems for increasing the contrast with which thin-stemmed characters can be displayed in sub-pixel rendering processes are disclosed. Some fonts, such as Courier New, have relatively thin stems and other character features that would otherwise be rendered with low contrast when displayed using an oversampling process combined with a rendering process that treats individual pixel sub-components as separate luminous intensity sources. In order to avoid such low contrast features and to avoid the need for revising the font itself, the alpha values for the pixel sub-components that correspond to the character features are selectively increased to simulate larger dimensions of the character features and to increase the contrast with which the character dimensions are displayed. The methods involve oversampling image data representing a character by obtaining multiple samples for each of a plurality of pixel sub-components of a pixel. The alpha values associated with pixel sub-components at or near the position of the character features are increased to give the appearance of larger dimensions of the character features and greater contrast in the displayed image.

    摘要翻译： 公开了用于增加在子像素渲染过程中可以显示薄字符的对比度的方法和系统。 一些字体，例如Courier New，具有相对较薄的词干和其他字符特征，否则当使用过采样过程与将各个像素子组件视为单独的发光强度源的渲染过程相结合时，以低对比度呈现。 为了避免这种低对比度特征并且避免需要修改字体本身，对应于字符特征的像素子部件的α值被选择性地增加以模拟字符特征的较大尺寸并增加对比度 显示字符尺寸。 该方法包括通过为像素的多个像素子分量中的每一个获得多个样本来对表示字符的图像数据进行过采样。 与字符特征位置处或附近的像素子组件相关联的α值被增加以给出显示图像中的角色特征的较大尺寸和较大对比度的外观。

    Object position detector
    47.
    发明授权
    Object position detector 失效
    对象位置检测器

    公开(公告)号：US5861583A

    公开(公告)日：1999-01-19

    申请号：US680127

    申请日：1996-07-15

    申请人： Richard R. Schediwy ,  Jeffrey O. Pritchard ,  Ting Kao ,  Timothy P. Allen ,  John C. Platt

    发明人： Richard R. Schediwy ,  Jeffrey O. Pritchard ,  Ting Kao ,  Timothy P. Allen ,  John C. Platt

    IPC分类号： G06F3/033 ,  G06F3/041 ,  G06F3/044 ,  G06F3/048 ,  G06K9/00 ,  G08C21/00 ,  G09G5/00

    CPC分类号： G06F3/044 ,  G06F3/041 ,  G06K9/00335 ,  G06F2203/04101 ,  G06F2203/04808

    摘要： An object proximity sensor includes a capacitive touch-sensitive transducer including row conductive lines insulated from column conductive lines to from a matrix. An insulating layer is disposed over the matrix and has a thickness selected to achieve significant capacitive coupling between an object placed on its surface and the matrix. Circuitry first drives each of the row conductive lines to a fixed voltage and then simultaneously injects a known amount of charge onto each of the row conductive lines, and then senses for each row conductive line a row-sense voltage created by the known amount of charge injected onto each of the row conductive lines, and, simultaneous with injected the known amount of charge, changes the voltage on all of the column conductive lines in the same direction as the row-sense voltage by an amount no greater than about twice the difference between the fixed voltage and an average of all row-sense voltage in the transducer. Circuitry first drives each of the column conductive lines to a fixed voltage and then simultaneously injects a known amount of charge onto each of the column conductive lines, and then senses for each column conductive line a column-sense voltage created by the known amount of charge injected onto each of the column conductive lines, and, simultaneous with injecting the known amount of charge, changes the voltage on all of the row conductive lines in the same direction as the column-sense voltages by an amount no greater than about twice the difference between the fixed voltage and an average of all column-sense voltages in the transducer. A set of object-sensed electrical signals related to all of the row-sense voltages and all of the column-sense voltages is produced.

    摘要翻译： 物体接近传感器包括电容式触敏传感器，其包括从列导电线与矩阵绝缘的行导线。 绝缘层设置在矩阵之上，并且具有选择的厚度，以在放置在其表面上的物体与矩阵之间实现显着的电容耦合。 电路首先将每行行导线驱动到固定电压，然后同时将已知数量的电荷注入到每行行导线上，然后感测每行行导线由已知电荷量产生的行感应电压 注入到每行行导线上，同时注入已知的电荷量，将所有列导电线上的电压与行检测电压沿相同的方向改变不大于两倍的差值 在固定电压和传感器中的所有行感应电压的平均值之间。 电路首先将每个列导电线驱动到固定电压，然后同时将已知量的电荷注入到每个列导电线上，然后感测每个列导电线由已知电荷量产生的列检测电压 注入到每个列导电线上，并且同时注入已知的电荷量，将所有行导电线上的电压与列检测电压沿相同的方向改变不大于两倍的差值 在固定电压和传感器中所有列检测电压的平均值之间。 产生与所有行检测电压和所有列检测电压相关的一组物体感测电信号。

    Circuits for linear conversion between currents and voltages
    49.
    发明授权
    Circuits for linear conversion between currents and voltages 失效
    用于电流和电压之间线性转换的电路

    公开(公告)号：US5165054A

    公开(公告)日：1992-11-17

    申请号：US629470

    申请日：1990-12-18

    申请人： John C. Platt ,  Michael F. Wall ,  Glenn E. Gribble ,  Carver A. Mead

    发明人： John C. Platt ,  Michael F. Wall ,  Glenn E. Gribble ,  Carver A. Mead

    IPC分类号： H03F3/30

    CPC分类号： H03F3/3022 ,  H03F3/3001 ,  H03F2203/30006 ,  H03F2203/30009 ,  H03F2203/30084 ,  H03F2203/30117

    摘要： A linear voltage-to-current converter (LVCC) circuit includes two transistors, one P-channel and one N-channel. The input voltage is applied to the gates of both transistors. The drains of the two transistors are connected. The source of the p-type transistor is connected to a first voltage rail, and the source of the N-channel is connected to a second voltage rail of lower voltage. The output is the difference between the current through the P-channel transistor and the N-channel transistor. A linear current-to-voltage converter (LCVC) circuit is similar to the LVCC circuit, except that the gates of the transistors are tied to the drains of the transistors. The input current is supplied to the drains, and the output voltage is the voltage of the drains.

    摘要翻译： 线性电压 - 电流转换器（LVCC）电路包括两个晶体管，一个P沟道和一个N沟道。 输入电压被施加到两个晶体管的栅极。 两个晶体管的漏极相连。 p型晶体管的源极连接到第一电压轨，并且N沟道的源极连接到具有较低电压的第二电压轨。 输出是通过P沟道晶体管和N沟道晶体管的电流之差。 线性电流 - 电压转换器（LCVC）电路类似于LVCC电路，只是晶体管的栅极连接到晶体管的漏极。 输入电流被提供给排水管，输出电压是排水管的电压。