公开(公告)号：US06898313B2

公开(公告)日：2005-05-24

申请号：US10092851

申请日：2002-03-06

Applicant: Xin Li ,  Louis J. Kerofsky ,  Kristine Elizabeth Matthews

Inventor： Xin Li ,  Louis J. Kerofsky ,  Kristine Elizabeth Matthews

IPC: G06T9/00 ,  H04N1/41 ,  G06K9/34

CPC classification number: H04N1/41 ,  G06T9/00 ,  G06T9/004

Abstract: A data coder prepares a frame of data for transmission over a data channel. The frame is first broken into a series of non-overlapping blocks. The blocks are analyzed to determine if they are a “picture” block or a “non-picture” block. Picture blocks are compressed to produce one or more layers of data, including a base layer and, optionally, one or more enhanced layers. Non-picture blocks are similarly compressed, but according to different compression procedures. Prior to sending the compressed layers of data to a scheduler for transmission on the data channel, the blocks are checked to see if they have changed more than a threshold amount from the last time they were sent. If the block has changed more than the threshold, the changed block is sent to the scheduler, in compressed form. If the block has not changed more than the threshold, only an indication of the block, and not the block itself, is sent to the scheduler.

Abstract translation: 数据编码器准备一帧数据以便通过数据信道进行传输。 该帧首先被分成一系列不重叠的块。 分析块以确定它们是“图像”块还是“非图像”块。 图像块被压缩以产生一层或多层数据，包括基层和可选地一个或多个增强层。 非图像块类似地被压缩，但是根据不同的压缩过程。 在将压缩的数据层发送到调度器以在数据信道上进行传输之前，检查该块是否从上一次发送起来已经改变了超过阈值量。 如果块已经改变超过阈值，则更改的块以压缩形式发送到调度器。 如果块没有改变超过阈值，则只有块的指示而不是块本身被发送到调度器。

公开(公告)号：US06591019B1

公开(公告)日：2003-07-08

申请号：US09493257

申请日：2000-01-28

Applicant: Claude Comair ,  Xin Li ,  Samir Abou-Samra ,  Robert Champagne ,  Sun Tjen Fam ,  Prasanna Ghali ,  Jun Pan

Inventor： Claude Comair ,  Xin Li ,  Samir Abou-Samra ,  Robert Champagne ,  Sun Tjen Fam ,  Prasanna Ghali ,  Jun Pan

IPC: G06K936

CPC classification number: G06T9/005 ,  G06F9/30043 ,  G06F9/34

Abstract: Compressing and decompressing techniques for transformation matrices 3D computer graphics systems use to animate objects achieve high compression ratios by taking advantage of common characteristics of homogenous 3D transformation matrices. The techniques use a bitmap to encode information on locations of ones and zeros of the matrix—bypassing the penchant of compilers to represent such information as high-precision numbers. Since most video game processors and display hardware are constrained by their resolutions and since an original transformation matrix often stores data that is more accurate than necessary, the techniques convert some real numbers in the matrix (e.g., those within the range of −1 and 1) into integers by scaling them by a constant. The resulting compressed matrices occupy much less storage space than their non-compressed counterparts, and can be efficiently decompressed in real time for use in interactive real time 3D animations.

Abstract translation: 用于变换矩阵的压缩和解压缩技术3D计算机图形系统用于通过利用均匀3D变换矩阵的共同特征来动画对象来实现高压缩比。 这些技术使用位图来对基于矩阵的零和零的位置的信息进行编码，从而绕过编译器的倾向，以表示诸如高精度数字的信息。 由于大多数视频游戏处理器和显示硬件都受到其分辨率的约束，并且由于原始的变换矩阵通常存储比所需更准确的数据，所以这些技术将矩阵中的某些实数（例如，-1和1范围内的那些数字） ）通过将它们缩放为常数来整数。 所得到的压缩矩阵占据比非压缩对等体少得多的存储空间，并且可以实时有效地解压缩以用于交互式实时3D动画。

公开(公告)号：US06416410B1

公开(公告)日：2002-07-09

申请号：US09453721

申请日：1999-12-03

Applicant: Samir Abou-Samra ,  Claude Comair ,  Robert Champagne ,  Sun Tjen Fam ,  Prasanna Ghali ,  Stephen Lee ,  Jun Pan ,  Xin Li

Inventor： Samir Abou-Samra ,  Claude Comair ,  Robert Champagne ,  Sun Tjen Fam ,  Prasanna Ghali ,  Stephen Lee ,  Jun Pan ,  Xin Li

IPC: A63F1300

CPC classification number: G06T9/005 ,  A63F2300/203 ,  A63F2300/204 ,  H03M7/46

Abstract: Loss-less data compression/decompression especially useful in a limited resource environment such as a handheld portable video game system allows graphics and/or attribute data to be efficiently and quickly decompressed on an as-needed basis in real time response to interactive user inputs. A two-level run-length-encoding is used to encode redundant patterns and redundant symbols. A common sentinel field format encodes whether data following the field is non-redundant data, a symbol run, or a pattern run. Compression ratios of 60% for representative symbol-mapped video display graphics/attribute files can be achieved.

Abstract translation: 在诸如手持式便携式视频游戏系统的有限的资源环境中特别有用的无损数据压缩/解压缩允许图形和/或属性数据在需要的基础上有效且快速地解压缩以实时响应于交互式用户输入。 双级游程编码用于编码冗余模式和冗余符号。 常见的前哨字段格式编码字段后面的数据是非冗余数据，符号运行还是模式运行。 可以实现代表性符号映射视频显示图形/属性文件的压缩率为60％。

公开(公告)号：US6019954A

公开(公告)日：2000-02-01

申请号：US698208

申请日：1996-08-14

Applicant: Fushan Tang ,  Xintang Zhang ,  Qiuyun Zong ,  Yuxiu Wang ,  Yongfang Tan ,  Xin Li ,  Zhaoming Tian ,  Yanwei Yang

Inventor： Fushan Tang ,  Xintang Zhang ,  Qiuyun Zong ,  Yuxiu Wang ,  Yongfang Tan ,  Xin Li ,  Zhaoming Tian ,  Yanwei Yang

IPC: B01J21/10 ,  B01J23/85 ,  C01B3/16 ,  B01J23/02

CPC classification number: B01J23/85 ,  B01J21/10 ,  C01B3/16 ,  Y02P20/52

Abstract: Disclosed are a catalyst suitable for the conversion of carbon monoxide with steam into carbon dioxide and hydrogen, and a process therewith for said conversion. Said catalyst comprises Co, Ni, Mo and/or W active components, TiO.sub.2 -containing carrier and non-alkali metal element promoter(s). Said process comprises reacting carbon monoxide feed gas containing 0.01% or more of H.sub.2 S by volume with steam in the presence of said catalyst at a temperature between 230 to 500.degree. C. under a pressure between 0 to 10 MPa (absolute) with a relatively high yield, whereby heavy fuel can be used as a source of carbon monoxide feed gas for such a process.

Abstract translation: 公开了适用于将一氧化碳与蒸汽转化为二氧化碳和氢气的催化剂，以及用于所述转化的方法。 所述催化剂包括Co，Ni，Mo和/或W活性组分，含TiO 2的载体和非碱金属元素促进剂。 所述方法包括在所述催化剂存在下，在0℃至10MPa（绝对）和相对较高的压力下，在230-500℃的温度下，将含有0.01％或更多的H 2 S体积的一氧化碳进料气体与蒸汽反应 产率，由此重燃料可用作这种方法的一氧化碳进料气体的来源。