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1. 发明授权

US06966029B1 Script embedded in electronic documents as invisible encoding 失效
标题翻译：脚本嵌入电子文档中作为隐形编码
公开(公告)号：US06966029B1
公开(公告)日：2005-11-15
申请号：US09456897
申请日：1999-12-08
申请人： Keith Thomas Ahern
发明人： Keith Thomas Ahern
IPC分类号： G06F17/21 , G06F17/22 , G06F17/00
CPC分类号： G06F17/212 , G06F17/211 , G06F17/2247 , G06F17/2294
摘要： Documents that contain content information and script information that controls user-interactivity with the document are encoded as a content section that is separate from the script information. The script information contains references to the content section, which typically comprises text information. By segregating the text information from the script, all text applications are able to display an undisturbed copy of the text information. In a preferred embodiment, the script is appended to the text information segment of the document, so that the direct display of the initial portion of the document is an immediately readable version of the text. In a second encoding method, which can be independent or combined with the first method, the script information is encoded using “invisible” sequences of characters. In one example embodiment, unique sequences of invisible characters, such as space, backspace, tab, etc., are used to encode each script element. In another example embodiment, the script elements are encoded as a sequence of visible characters and corresponding invisible characters that have the effect of erasing the visible characters from view, such as backspace characters. By invisibly encoding the script elements, the direct display of the document will appear as a text document, because the script elements will either be self-erasing, or attached to the text document as “invisible” white space.
摘要翻译：包含控制与文档的用户交互性的内容信息和脚本信息的文档被编码为与脚本信息分离的内容部分。脚本信息包含对内容部分的引用，该部分通常包含文本信息。通过将文本信息与脚本隔离，所有文本应用程序都能够显示文本信息的未受干扰的副本。在优选实施例中，脚本被附加到文档的文本信息段，使得文档的初始部分的直接显示是文本的立即可读版本。在可以独立地或与第一种方法组合的第二编码方法中，使用“不可见”字符序列对脚本信息进行编码。在一个示例实施例中，使用唯一的不可见字符序列，例如空格，退格，标签等来对每个脚本元素进行编码。在另一个示例性实施例中，脚本元素被编码为可视字符和对应的不可见字符的序列，其具有从视图中删除可见字符（例如退格字符）的效果。通过对脚本元素进行无形编码，文档的直接显示将显示为文本文档，因为脚本元素将自动擦除或附加到文本文档为“不可见”的空白。

2. 发明授权

US06769061B1 Invisible encoding of meta-information 失效
标题翻译：元信息的隐形编码
公开(公告)号：US06769061B1
公开(公告)日：2004-07-27
申请号：US09487150
申请日：2000-01-19
申请人： Keith Thomas Ahern
发明人： Keith Thomas Ahern
IPC分类号： G06F124
CPC分类号： G06F17/2294 , G06F17/2205 , G06T1/0021 , G06T2201/0062 , H04N1/32128 , H04N1/32203
摘要： Meta-information, such as a digital watermark, that is associated with a document is encoded by using characters, or sequences of characters, that are “invisible” when rendered. Characters such as spaces, tabs, carriage returns, backspaces, line feeds, and so on are used to encode the watermark. The encoded “invisible” meta-information item is preferably appended to the document. A receiving device that is compatible with this encoding is able to decode and process the meta-information, for example, to verify the contents and/or the originator of the document. A receiving device that is not compatible with this encoding will merely display or print additional “white space” corresponding to the “invisible” meta-information. By appending this invisible encoding to the document, this additional white space will occur after the display or printing of the document, in a visually unobtrusive form.
摘要翻译：与文档相关联的元信息（例如数字水印）通过使用被呈现为“不可见”的字符或字符序列进行编码。诸如空格，制表符，回车符，后退空格，换行符等字符用于对水印进行编码。编码的“不可见”元信息项优选地附加到文档。与该编码兼容的接收设备能够对元信息进行解码和处理，例如验证文档的内容和/或发起者。与该编码不兼容的接收设备将仅显示或打印与“不可见”元信息相对应的附加“空格”。通过将这个不可见的编码附加到文档中，这个额外的空格将在文档的显示或打印之后以视觉上不显眼的形式出现。

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