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91. 发明授权

US07148823B2 Generating and searching compressed data 有权
公开(公告)号：US07148823B2
公开(公告)日：2006-12-12
申请号：US11303798
申请日：2005-12-16
申请人： James Armand Baldwin , Peter T. Barrett
发明人： James Armand Baldwin , Peter T. Barrett
IPC分类号： H03M7/30 , G06F3/00 , G06F13/00
CPC分类号： H04N21/26208 , G06F17/30985 , H03M7/30 , H03M7/42 , H04N7/163 , H04N21/2353 , H04N21/25833 , H04N21/26233 , H04N21/26283 , H04N21/4335 , H04N21/443 , Y10S707/99942
摘要： Data destined for a client is compressed at a server in a manner that produces a compressed data string that can be searched in its compressed state. The server constructs a code table that assigns codes from a standard code set (e.g., ASCII code set) that are normally unused to selected character pairs in the data string (e.g., the most frequently occurring character pairs). During compression, the selected character pairs are replaced with the corresponding codes. Identifiers are inserted into the compressed data string to separate substrings. To search the compressed data string at the client, a search query is compressed and compared to the compressed substrings. The substring identifiers are used to quickly locate each successive compressed substring. When a match is found, the matching substring is decompressed by replacing the code in the compressed substring with the corresponding character pair in the code table.

92. 发明授权

US07109997B1 Systems and methods for direct storage of compressed scan converted data 有权
标题翻译：用于直接存储压缩扫描转换数据的系统和方法
公开(公告)号：US07109997B1
公开(公告)日：2006-09-19
申请号：US10187265
申请日：2002-06-28
申请人： Sean Callahan , Peter T. Barrett
发明人： Sean Callahan , Peter T. Barrett
IPC分类号： G06T9/00 , G09G5/00 , G06K9/40 , G09G5/36 , G06K9/66 , G06F15/167
CPC分类号： G09G5/393 , G06T9/20 , G09G5/24 , G09G5/30 , G09G2340/02 , H04N19/423 , H04N19/93
摘要： The described implementations provide arrangements and procedures for scan converting data into compressed representations of pixel data. In particular, shape geometry including shape and/or position attributes of one or more objects are directly scan converted into compressed scan converted data. The compressed scan converted data is stored into memory for subsequent application access and rendering.
摘要翻译：所描述的实现提供用于将数据扫描转换成像素数据的压缩表示的布置和过程。特别地，包括一个或多个对象的形状和/或位置属性的形状几何直接扫描转换成压缩的扫描转换数据。压缩的扫描转换后的数据被存储到存储器中，用于随后的应用程序访问和渲染。

93. 发明授权

US06412112B1 System for transmitting digital data through a lossy channel 失效
标题翻译：通过有损通道传输数字数据的系统
公开(公告)号：US06412112B1
公开(公告)日：2002-06-25
申请号：US09246275
申请日：1999-02-08
申请人： Peter T. Barrett , Steven C. Wasserman , Stephen G. Perlman
发明人： Peter T. Barrett , Steven C. Wasserman , Stephen G. Perlman
IPC分类号： H04N716
CPC分类号： H04N21/23614 , H04H20/40 , H04H20/42 , H04H20/74 , H04H20/91 , H04H20/95 , H04H40/09 , H04H40/90 , H04H60/72 , H04H60/82 , H04H2201/33 , H04N7/083 , H04N7/085 , H04N7/088 , H04N7/17327 , H04N19/61 , H04N21/235 , H04N21/26241 , H04N21/4143 , H04N21/4331 , H04N21/4348 , H04N21/435 , H04N21/4383 , H04N21/4622 , H04N21/47202 , H04N21/4782 , H04N21/4786 , H04N21/482 , H04N21/6125 , H04N21/6587
摘要： A system for distributing digital data over a video channel to a plurality of remotely located client terminals. The system involves selecting a set of digital data to be distributed and converting it to an intermediate format compatible with video broadcast. The intermediate data is then broadcast over a video channel during a time when no video content is being transmitted so that the intermediate format data takes the place of the video content. The intermediate format data is received at a remotely located client terminal where the set of digital data is recovered.
摘要翻译：一种用于通过视频信道将数字数据分发到多个位于远程的客户终端的系统。该系统包括选择要分发的一组数字数据并将其转换成与视频广播兼容的中间格式。然后，在不传输视频内容的时间期间，通过视频信道广播中间数据，以便中间格式数据代替视频内容。中间格式数据在远程定位的客户终端处被接收，其中恢复数字数据集。

94. 发明授权

US6034667A Method and apparatus for displaying YUV color information on a pseudo-color RGB display 失效
标题翻译：用于在伪彩色RGB显示器上显示YUV颜色信息的方法和装置
公开(公告)号：US6034667A
公开(公告)日：2000-03-07
申请号：US139456
申请日：1993-10-20
申请人： Peter T. Barrett
发明人： Peter T. Barrett
IPC分类号： G09G3/20 , G09G5/02 , G09G5/04
CPC分类号： G09G5/02 , G09G3/2051
摘要： A method and apparatus for displaying a color image stored in a YUV color format on a display device that generates video in an RGB format. The apparatus uses a frame buffer which stores a color index for each pixel. The index is used to select an RGB color in a color look-up table as the video signal is generated. Each input YUV value is converted to a mapping table index for addressing a pair of the color indices stored in a color space mapping table. To generate the mapping table index, a random number can be added to the Y, U, and V color components, which are then truncated and merged to generate the mapping table index. The color space mapping table is pre-loaded with a color index pairs, each corresponding to two pixels in the frame buffer represented by one input YUV color value. The appropriate color indices are based on the minimum error distance in a three dimensional YUV space, although the error in Y is weighted considerably stronger than U and V, since the human eye is more sensitive to errors in luminance than chrominance.
摘要翻译：一种用于在以RGB格式生成视频的显示装置上显示以YUV颜色格式存储的彩色图像的方法和装置。该装置使用存储每个像素的颜色索引的帧缓冲器。该索引用于在生成视频信号时在颜色查找表中选择RGB颜色。每个输入YUV值被转换为映射表索引，用于寻址存储在颜色空间映射表中的一对颜色索引。要生成映射表索引，可以将一个随机数添加到Y，U和V颜色分量中，然后将它们截断并合并生成映射表索引。颜色空间映射表预先加载了一个颜色索引对，每个对应于由一个输入YUV颜色值表示的帧缓冲区中的两个像素。相应的颜色指数是基于三维YUV空间中的最小误差距离，尽管Y中的误差比U和V强大得多，因为人眼对亮度误差比色度更敏感。

95. 发明授权

US5341442A Method and apparatus for compression data by generating base image data from luminance and chrominance components and detail image data from luminance component 失效
标题翻译：通过从亮度和色度分量生成基本图像数据并从亮度分量细节图像数据来压缩数据的方法和装置
公开(公告)号：US5341442A
公开(公告)日：1994-08-23
申请号：US111268
申请日：1993-08-24
申请人： Peter T. Barrett
发明人： Peter T. Barrett
IPC分类号： G06T9/00 , H04N1/41 , H04N1/64 , H04N7/26 , H04N7/32 , H04N7/34 , H04N11/04 , H04N11/24 , G06K9/00
CPC分类号： H04N11/046 , H04N1/646 , H04N11/006 , H04N19/124 , H04N19/50 , H04N19/593 , H04N19/13 , H04N19/30 , H04N19/60 , H04N19/91
摘要： A method and apparatus for compressing YUV color image data representing an image. The method includes the steps of generating base image data containing low frequency image information where the base image data is a function of the Y component, the U component, and the V component, and generating detail image data containing high frequency image information where the detail image data is a function of the Y component alone. The base image data can be decompressed to from a decompressed base image data that is an approximate facsimile of the original image and the detail image data can be decompressed and selectively added to the decompressed base image data to form a facsimile which more accurately duplicates the original image than the decompressed base image data alone. The step of generating the detail image data includes the steps of determining an average of Y component signals of a sub-array of pixels, determining an approximate variance of Y component signals of the sub-array, and forming a bit mask wherein each bit in the mask indicates whether the corresponding pixel is greater than or less than the mean. The compression algorithm is optimized for execution on general purpose commodity microprocessors so that it can be executed with reasonable performance on conventional desk-top personal computers without specialized hardware.
摘要翻译：一种用于压缩表示图像的YUV彩色图像数据的方法和装置。该方法包括产生包含低频图像信息的基本图像数据的步骤，其中基本图像数据是Y分量，U分量和V分量的函数，并且生成包含高频图像信息的细节图像数据，其中细节图像数据是单独的Y组件的函数。基本图像数据可以从作为原始图像的近似传真的解压缩的基本图像数据解压缩，并且细节图像数据可以被解压缩并且选择性地添加到解压缩的基本图像数据，以形成更准确地复制原始图像的传真图像比解压缩的基本图像数据单独。产生详细图像数据的步骤包括以下步骤：确定像素子阵列的Y分量信号的平均值，确定子阵列的Y分量信号的近似方差，以及形成位掩码，其中每个位掩码表示对应的像素是否大于或小于平均值。压缩算法针对通用商品微处理器的执行进行优化，以便在没有专门硬件的情况下，可以在传统的台式个人计算机上以合理的性能执行压缩算法。

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