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公开(公告)号：US5625721A
公开(公告)日：1997-04-29
申请号：US223830
申请日：1994-04-06
CPC分类号： G06K9/2054 , G06K9/03 , G06K2209/01
摘要： A certificate, calculated on the text of a document to be reproduced, is included in the document in a form which is machine-readable. Upon optical character recognition scanning, or other digitizing reproduction, the certificate is also scanned and stored for comparison. A new certificate is calculated on the contents of the reproduced document and compared to the scanned certificate. If the two certificates are different, it is known that at least one error exists in the reproduced document. More than one certificate can be provided for a document in order to facilitate error location on the document and error correction therein.
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公开(公告)号：US5748807A
公开(公告)日：1998-05-05
申请号：US138467
申请日：1993-10-15
CPC分类号： G06K9/2054 , G06K9/03 , G06K2209/01
摘要： A document marker, including first values dependent upon the layout and the contents of the document and assigned by generating or preprocessing software, is provided in machine-readable symbology on the face of a printed version of the document. The marker may include encoded document layout information and values assigned on sequences of the original text, including text-dependent decimation sequences, error correction codes or check-sums. Upon optical character recognition scanning, or other digitizing reproduction, the marker is also scanned. The scanning computer, having corresponding software, assigns second values dependent upon the layout and contents of the reproduced document. Upon comparison of the first and second decimation sequences, line and character errors can be detected and some errors corrected, thereby generating re-aligned candidate sequences. Optional error correction codes can provide further correcting capabilities, as applied to the re-aligned reproduced document sequences; and, an optional check-sum comparison can be utilized to verify the accuracy of the reproduced sequences are correct.
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公开(公告)号：US5703972A
公开(公告)日：1997-12-30
申请号：US560299
申请日：1995-11-17
CPC分类号： G06K9/2054 , G06K9/03 , G06K2209/01
摘要： A certificate, calculated on the text of a document to be reproduced, is included in the document in a form which is machine-readable. Upon optical character recognition scanning, or other digitizing reproduction, the certificate is also scanned and stored for comparison. A new certificate is calculated on the contents of the reproduced document and compared to the scanned certificate. If the two certificates are different, it is known that at least one error exists in the reproduced document. More than one certificate can be provided for a document in order to facilitate error location on the document and error correction therein.
摘要翻译： 根据要复制的文档的文本计算的证书以机器可读的形式包含在文档中。 在进行光学字符识别扫描或其他数字化再现时，也扫描和存储证书以进行比较。 根据复制的文件的内容计算新的证书，并与扫描的证书进行比较。 如果两个证书不同，则已知在再现的文档中存在至少一个错误。 可以为文档提供多个证书，以便于文档上的错误位置和错误更正。
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4.发明授权Method and means for enhancing optical character recognition of printed documents 失效增强打印文件光学字符识别的方法和手段
公开(公告)号：US6047093A
公开(公告)日：2000-04-04
申请号：US915278
申请日：1997-08-20
CPC分类号： G06K9/2054 , G06K9/03 , G06K2209/01
摘要： A document marker, including first values dependent upon the layout and the contents of the document and assigned by generating or preprocessing software, is provided in machine-readable symbology on the face of a printed version of the document. The marker may include encoded document layout information and values assigned on sequences of the original text, including text-dependent decimation sequences, error correction codes or check-sums. Upon optical character recognition scanning, or other digitizing reproduction, the marker is also scanned. The scanning computer, having corresponding software, assigns second values dependent upon the layout and contents of the reproduced document. Upon comparison of the first and second decimation sequences, line and character errors can be detected and some errors corrected, thereby generating re-aligned candidate sequences. Optional error correction codes can provide further correcting capabilities, as applied to the re-aligned reproduced document sequences; and, an optional check-sum comparison can be utilized to verify the accuracy of the reproduced sequences are correct.
摘要翻译： 文档标记，包括取决于文档的布局和内容的第一个值，并通过生成或预处理软件分配，在机器可读的符号系统中，在文档的打印版本的表面上提供。 标记可以包括编码的文档布局信息和分配给原始文本的序列的值，包括文本相关的抽取序列，纠错码或校验和。 在光学字符识别扫描或其他数字化再现时，也扫描标记。 具有相应软件的扫描计算机分配取决于再现文档的布局和内容的第二值。 通过比较第一和第二抽取序列，可以检测行和字符错误，并校正一些错误，从而产生重新排列的候选序列。 可选的纠错码可以提供进一步的校正功能，如应用于重新对齐的再现文档序列; 并且可以使用可选的校验和比较来验证再现序列的准确性是正确的。
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公开(公告)号：US5852684A
公开(公告)日：1998-12-22
申请号：US964560
申请日：1997-11-05
CPC分类号： G06K9/00 , G06K9/2054 , H04N1/32101 , G06K2209/01 , H04N2201/3205 , H04N2201/3212 , H04N2201/3225 , H04N2201/3269 , H04N2201/3271
摘要： A marker encoded and provided in the side channel of an analog rendering provides digital information about the analog rendering with which it is simultaneously provided. Perceptible non-intrusive, computer-interpretable encodings, incorporated into printed, handwritten, pictorial or video communication renderings, and audible, non-intrusive, computer-perceptible encodings in audio renderings, using available side channel bandwidth in those media, allow generating or preprocessing computer-to-recognizing computer communication of a wide range of information relating to the generation and reproduction of the main channel analog information, such as error correction encoding, scan order encoding, object identification and algorithms used in generating the analog information.
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公开(公告)号：US5793903A
公开(公告)日：1998-08-11
申请号：US434560
申请日：1995-05-03
CPC分类号： G06K9/00 , G06K9/2054 , H04N1/32101 , G06K2209/01 , H04N2201/3205 , H04N2201/3212 , H04N2201/3225 , H04N2201/3269 , H04N2201/3271
摘要： A marker encoded and provided in the side channel of an analog rendering provides digital information about the analog rendering with which it is simultaneously provided. Perceptible non-intrusive, computer-interpretable encodings, incorporated into printed, handwritten, pictorial or video communication renderings, and audible, non-intrusive, computer-perceptible encodings in audio renderings, using available side channel bandwidth in those media, allow generating or preprocessing computer-to-recognizing computer communication of a wide range of information relating to the generation and reproduction of the main channel analog information, such as error correction encoding, scan order encoding, object identification and algorithms used in generating the analog information.
摘要翻译： 在模拟渲染的侧面通道中编码和提供的标记提供了与其同时提供的模拟渲染的数字信息。 使用这些媒体中可用的侧面频道带宽，将可包含在印刷，手写，图形或视频通信效果图中的可感知的非侵入式，可计算机解释的编码以及音频渲染中的可听，非侵入性的计算机可感知编码允许生成或预处理 与主通道模拟信息的生成和再现有关的广泛范围的信息的计算机到识别计算机通信，诸如纠错编码，扫描顺序编码，对象识别和用于生成模拟信息的算法。
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公开(公告)号：US5276806A
公开(公告)日：1994-01-04
申请号：US249645
申请日：1988-09-19
IPC分类号： G06F15/167 , G06F15/17 , G06F15/16
CPC分类号： G06F15/17
摘要： Independent heterogeneous computers are interconnected for oblivious, high speed, long distance communications. A printed circuit board with onboard RAM repeats all write commands through a data transmission media to a remote system. Each read and write cycle of the communicating computer is completed locally (using only local RAM). Apart from repeating write commands to a remote system, the invention is oblivious to the remote system. Data is transmitted from one machine to another without expensive communication protocols or transmission line latency induced wait states. A remote computer accesses network data only after it has been transmitted and stored in local memory. Multiple data transfers can be pipelined, that is, multiple datum may simultaneously reside in a high latency network/long transmission line. Although the time required to transmit any single datum remains proportional to the signal propagation delay, the time required to transmit multiple data is significantly reduced. Geographic separation, high speed transmission lines, low speed transmission lines, alternative means for data transmission, fault tolerance, one-way communications, multi-way communications, and high security can be supported by a single computer network of heterogeneous machines.
摘要翻译： 独立的异构计算机相互连接，用于无休止，高速，长途通信。 具有板载RAM的印刷电路板通过数据传输介质将所有写命令重复到远程系统。 通信计算机的每个读写周期本地完成（仅使用本地RAM）。 除了向远程系统重复写入命令之外，本发明还不知道远程系统。 数据从一台机器传输到另一台机器，而无需昂贵的通信协议或传输线延迟引起的等待状态。 远程计算机只有在传输并存储在本地存储器中之后才能访问网络数据。 多个数据传输可以流水线化，也就是说，多个数据可能同时驻留在高延迟网络/长传输线路中。 尽管传输任何单个数据所需的时间与信号传播延迟成正比，但传输多个数据所需的时间显着减少。 异构机的单台计算机网络可以支持地理分离，高速传输线路，低速传输线路，数据传输，容错，单向通信，多路通信和高安全性的替代方法。
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