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1. 发明授权

US5513304A Method and apparatus for enhanced automatic determination of text line dependent parameters 失效
标题翻译：用于增强自动确定文本行相关参数的方法和装置
公开(公告)号：US5513304A
公开(公告)日：1996-04-30
申请号：US191895
申请日：1994-02-04
申请人： A. Lawrence Spitz , Antonio P. Dias
发明人： A. Lawrence Spitz , Antonio P. Dias
IPC分类号： G06K9/20 , G06K9/34
CPC分类号： G06K9/348 , G06K2209/01
摘要： An automatic character cell determining apparatus automatically determines the character cells within the text image of a document. A connected component generator means generates connected components from the pixels comprising the text image. An aligning device aligns skewed and warped lines to the proper image axes. A bounding box generator generates a bounding box surrounding each connected component. A character cell determining device for locating character cells including one or more connected components has a vertical splaying device and a horizontal splaying device for ensuring white spaces between lines and connected components, a vertical profile device for determining the vertical positions of a line, a splitting device for splitting ligatures of two or more connected components and a character cell generator for generating character cells grouping together one or more connected components.
摘要翻译：自动字符单元确定装置自动确定文档的文本图像内的字符单元。连接分量发生器装置从包括文本图像的像素生成连接分量。对准装置将倾斜和翘曲的线对齐到正确的图像轴。边界框生成器围绕每个连接的组件生成一个边界框。用于定位包括一个或多个连接分量的字符单元的字符单元确定装置具有用于确定线和连接分量之间的空白的垂直显示装置和水平放映装置，用于确定线的垂直位置的垂直分布装置，分割用于分离两个或多个连接组件的连接的设备和用于生成将一个或多个连接组件组合在一起的字符单元的字符单元发生器。

2. 发明授权

US5425110A Method and apparatus for automatic language determination of Asian language documents 失效
标题翻译：用于自动语言确定亚洲语言文件的方法和装置
公开(公告)号：US5425110A
公开(公告)日：1995-06-13
申请号：US47673
申请日：1993-04-19
申请人： A. Lawrence Spitz
发明人： A. Lawrence Spitz
IPC分类号： G06K9/20 , G06F17/27 , G06K9/62 , G06K9/68 , G06K9/46
CPC分类号： G06F17/275 , G06K9/6807 , G06K2209/011
摘要： An automatic language determining apparatus automatically determines the particular Asian language of the text image of a document when the gross script-type is known to be, or is determined to be, an Asian script-type. A connected component generating means generates connected components from the pixels comprising the text image. A character cell generating means generates a character cell surrounding at least one connected component. An optical density determining means determines the optical density, in absolute numbers or percentage of pixels, of the pixels within each character cell. A script feature determining means first generates a histogram, then converts, by linear discriminate analysis, the histogram to a point in a new coordinate space. A language determining means compares the determined point of the text portion in the new coordinate space to predetermined regimes in the new coordinate space corresponding to at least one Asian language to determine the particular Asian language of the text image.
摘要翻译：自动语言确定装置当已知或确定为亚洲脚本类型时，自动确定文档的文本图像的特定亚洲语言。连接分量生成装置从包括文本图像的像素生成连接分量。字符单元生成单元生成围绕至少一个连接分量的字符单元。光密度确定装置确定每个字符单元内的像素的光密度（以像素的绝对数或百分比表示）。脚本特征确定装置首先生成直方图，然后通过线性判别分析将直方图转换为新坐标空间中的点。语言确定装置将新坐标空间中的文本部分的确定点与对应于至少一种亚洲语言的新坐标空间中的预定方案进行比较，以确定文本图像的特定亚洲语言。

3. 发明授权

US5377280A Method and apparatus for automatic language determination of European script documents 失效
标题翻译：欧洲脚本文件的自动语言确定方法和装置
公开(公告)号：US5377280A
公开(公告)日：1994-12-27
申请号：US47539
申请日：1993-04-19
申请人： Takehiro Nakayama
发明人： Takehiro Nakayama
IPC分类号： G06K9/62 , G06F17/27 , G06F17/28 , G06K9/46
CPC分类号： G06F17/275
摘要： An automatic language-determining apparatus automatically determines the particular European language of the text image of a document when the gross-script-type is known to be, or is determined to be, an European script-type. A word token generating means generates word tokens from the text image. A feature determining means determines the frequency of appearance of word tokens of the text portion which correspond to predetermined word tokens. A language determining means converts the determined frequency of appearance rates to a point in a new coordinate space, then determines which predetermined region of the new coordinate space the point is closes to, to determine the language of the text portion.
摘要翻译：一种自动语言确定装置，当已知或者被确定为欧洲脚本类型的大写字母类型时，自动确定文档的文本图像的特定欧洲语言。单词标记生成装置从文本图像生成单词令牌。特征确定装置确定对应于预定字标记的文本部分的字标记的出现频率。语言确定装置将确定的出现频率的频率转换为新坐标空间中的一个点，然后确定该点被关闭的新坐标空间的哪个预定区域，以确定文本部分的语言。

4. 发明授权

US5444797A Method and apparatus for automatic character script determination 失效
标题翻译：自动字符脚本确定的方法和装置
公开(公告)号：US5444797A
公开(公告)日：1995-08-22
申请号：US47515
申请日：1993-04-19
申请人： A. Lawrence Spitz , David A. Hull
发明人： A. Lawrence Spitz , David A. Hull
IPC分类号： G06K9/20 , G06K9/62 , G06K9/68 , G06K9/46 , G06K9/34
CPC分类号： G06K9/6807
摘要： An automatic script determining apparatus automatically determines the gross script-type of the text image of a document. A connected component generating means generates connected components from the pixels comprising the text image. A bounding box generating means generates a bounding box surrounding each connected component. A centroid determining means determines a centroid for each bounding box. A script feature determining means determines the locations, relative to the centroid, of one or more predetermined types of features, for each bounding box. A script determining means determines a distribution of the located script features for the entire text image, and compares the determined spatial distribution to predetermined distribution for at least one script-type to determine the script type of the text image.
摘要翻译：自动脚本确定装置自动确定文档的文本图像的总脚本类型。连接分量生成装置从包括文本图像的像素生成连接分量。边界框生成装置生成围绕每个连接的部件的边界框。重心确定装置确定每个边界框的质心。脚本特征确定装置为每个边界盒确定相对于质心的一个或多个预定类型的特征的位置。脚本确定装置确定整个文本图像的所定位的脚本特征的分布，并将确定的空间分布与至少一个脚本类型的预定分布进行比较，以确定文本图像的脚本类型。

5. 发明授权

US5438628A Method for matching text images and documents using character shape codes 失效
标题翻译：使用字符形状代码匹配文本图像和文档的方法
公开(公告)号：US5438628A
公开(公告)日：1995-08-01
申请号：US220926
申请日：1994-03-31
申请人： A. Lawrence Spitz , Antonio P. Dias
发明人： A. Lawrence Spitz , Antonio P. Dias
IPC分类号： G06K9/62 , G06K9/68 , G06K9/00
CPC分类号： G06K9/6807
摘要： A first method for exact and inexact matching of documents stored in a document database includes the step of converting the documents in the database to a compacted tokenized form. A search string or search document is then converted to the compact tokenized form and compared to determine if the test string occurs in the documents of the database or whether the documents in the database correspond to the test document. A second method for inexact matching of a test document to the documents in the database includes generating sets of one or more floating point values for each document in the database and for the test document. The sets of floating point numbers for the database are then compared to the set for the test document to determine a degree of matching. A threshold value is established and each document in the database which generates a matching value closer to the test document that the threshold is considered to be an inexact match of the test document.
摘要翻译：用于精确和不精确匹配存储在文档数据库中的文档的第一种方法包括将数据库中的文档转换为压缩的标记化形式的步骤。然后将搜索字符串或搜索文档转换为紧凑的标记表单并进行比较，以确定测试字符串是否出现在数据库的文档中，或者数据库中的文档是否对应于测试文档。测试文档与数据库中的文档的不精确匹配的第二种方法包括为数据库中的每个文档和测试文档生成一个或多个浮点值的集合。然后将数据库的浮点数集合与测试文档的集合进行比较，以确定匹配程度。建立阈值，并且数据库中的每个文档生成更接近测试文档的匹配值，阈值被认为是测试文档的不精确匹配。

6. 发明授权

US5375176A Method and apparatus for automatic character type classification of European script documents 失效
标题翻译：欧洲脚本文件自动字符类型分类的方法和装置
公开(公告)号：US5375176A
公开(公告)日：1994-12-20
申请号：US47540
申请日：1993-04-19
申请人： A. Lawrence Spitz
发明人： A. Lawrence Spitz
IPC分类号： G06K9/62 , G06K9/68
CPC分类号： G06K9/6807
摘要： An automatic abstract character coding system automatically generates abstract coded characters from the text image of a document when the gross script-type is known to be, or is determined to be, a European type script. A connected component generating means generates connected components from the pixels comprising the text image. A spatial feature determining means generates a character cell surrounding one or more aligned connected component. A character-type classifying means converts the character cell to one of a plurality of abstract character codes.
摘要翻译：自动抽象字符编码系统自动生成来自文档的文本图像的抽象编码字符，当粗体脚本类型已知或被确定为欧洲类型脚本时。连接分量生成装置从包括文本图像的像素生成连接分量。空间特征确定装置产生围绕一个或多个对齐的连接分量的字符单元。字符型分类装置将字符单元转换为多个抽象字符代码之一。

7. 发明授权

US11639067B2 Active airflow control device for vacuum paper transport 有权
公开(公告)号：US11639067B2
公开(公告)日：2023-05-02
申请号：US16679220
申请日：2019-11-10
申请人： Xerox Corporation
发明人： Jason M. Lefevre , Seemit Praharaj , Michael J. Levy , Douglas K. Herrmann , Paul McConville , Chu-Heng Liu , Linn C. Hoover , David A. VanKouwenberg
IPC分类号： B41J11/00 , B41J2/155 , B65H5/22 , B41J13/08
摘要： A marker transport system and a method of operating the marker transport system. A group of print bars is located with respect to a marker transport platen and a marker transport belt. A vacuum source and a pneumatic solenoid block are associated with the marker transport platen. The marker transport platen includes airflow sections divided into process-direction slots and cross-section direction slots. The cross-section direction slots are located beneath the print bars and are connected to the vacuum source via the pneumatic solenoid block, which facilitates an individual control of each of the cross-process direction slots. Pneumatic valves are associated with the pneumatic solenoid block, which supplies a flow of vacuum to the cross-process direction vacuum slots. The pneumatic vales can be timed to allow the vacuum to be present when a sheet is present over a corresponding vacuum slot among the process-direction slots and the cross-section direction slots.

8. 发明授权

US11628665B2 Digital ink application module and methods thereof 有权
公开(公告)号：US11628665B2
公开(公告)日：2023-04-18
申请号：US17462433
申请日：2021-08-31
申请人： XEROX CORPORATION
发明人： Steven R. Moore
IPC分类号： B41F31/13
摘要： A method for direct transfer printing is disclosed. The method for direct transfer printing includes applying a fountain solution to an imaging blanket in a negative imagewise manner using an inkjet printhead, contacting the imaging blanket with a printing substrate, transferring the fountain solution from the imaging blanket to the printing substrate, contacting the printing substrate with an inking station, and depositing an ink film from the inking station to the printing substrate in one or more locations on the printing substrate where there is no fountain solution. A module for a direct transfer marking process and a direct transfer printing system are also disclosed.

9. 发明申请

US20230116573A1 POLYMER FILAMENTS COMPRISING A METAL PRECURSOR FOR ADDITIVE MANUFACTURING AND METHODS ASSOCIATED THEREWITH 有权
公开(公告)号：US20230116573A1
公开(公告)日：2023-04-13
申请号：US18065807
申请日：2022-12-14
申请人： Xerox Corporation
发明人： Nan-Xing HU
IPC分类号： B29C64/118 , B33Y10/00 , B33Y30/00 , B33Y80/00 , B29C64/273 , B33Y70/10
摘要： Additive manufacturing processes, such as fused filament fabrication, may be employed to form printed objects in a range of shapes. It is sometimes desirable to form conductive traces upon the surface of a printed object. Conductive traces and similar features may be introduced in conjunction with fused filament fabrication processes by incorporating a metal precursor in a polymer filament having a filament body comprising a thermoplastic polymer, and forming a printed object from the polymer filament through layer-by-layer deposition, in which the metal precursor remains substantially unconverted to metal while forming the printed object. Suitable polymer filaments compatible with fused filament fabrication may comprise a thermoplastic polymer defining a filament body, and a metal precursor contacting the filament body, in which the metal precursor is activatable to form metal islands upon laser irradiation.

10. 发明申请

US20230097037A1 ALLOYING OF METAL JETTING COMPOSITIONS AND METHODS THEREOF 有权
公开(公告)号：US20230097037A1
公开(公告)日：2023-03-30
申请号：US17448940
申请日：2021-09-27
申请人： XEROX CORPORATION
发明人： Colin Gray FLETCHER , Mariusz Tadeusz MIKA , Miranda MOSCHEL , Daimon HELLER
IPC分类号： B22F12/58 , B33Y10/00 , B33Y30/00 , B22D23/00 , B22F10/22 , B33Y40/10 , B22F12/53
摘要： A system for jetting metal is also disclosed, which includes a nozzle orifice in connection with the inner cavity and configured to eject one or more droplets of liquid metal, a source of printing material located external to the ejector, and an alloying system located between the source of printing material and the ejector. A method for metal jetting is disclosed, which includes introducing a printing material from a feed source into an alloying system. The method for metal jetting also includes depositing an alloying material within the alloying system onto the printing material to produce an alloyed printing material, introducing the alloyed printing material into an ejector defining a cavity which can retain a printing material, melting the alloyed printing material in the cavity of the ejector, ejecting the alloyed printing material from the ejector.

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