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    • 42. 发明授权
    • Information processing method and apparatus, and computer program and computer-readable storage medium
    • 信息处理方法和装置,以及计算机程序和计算机可读存储介质
    • US07287284B2
    • 2007-10-23
    • US10419840
    • 2003-04-22
    • Junichi Hayashi
    • Junichi Hayashi
    • G06F7/04H04L9/00
    • H04N1/32208H04N1/32144H04N1/32245H04N1/32299H04N1/32341H04N2201/3233H04N2201/3235H04N2201/3239H04N2201/3281H04N2201/3284
    • Additional information is embedded in document data by inputting document data, inputting additional information, and inputting image data. The additional information is embedded in the input image data using a first digital watermark method, and the additional information is embedded in the input document data using a second digital watermark method. The document data embedded with the additional information is composited with the image data embedded with the additional information, with the image data as a background image. In a case where an original document containing information embedded using the second digital watermark method is copied by a copying machine, the information embedded in the copied document cannot be detected. The first digital watermark method has a robustness such that, when an original document containing information embedded using the first digital watermark method is copied by a copying machine, information embedded in the copied document can be detected.
    • 通过输入文档数据,输入附加信息和输入图像数据,将附加信息嵌入在文档数据中。 使用第一数字水印方法将附加信息嵌入在输入图像数据中,并且使用第二数字水印方法将附加信息嵌入在输入文档数据中。 嵌入附加信息的文档数据与嵌入附加信息的图像数据进行合成,图像数据作为背景图像。 在使用第二数字水印方式嵌入的信息的原稿由复印机复制的情况下,无法检测嵌入复制文件中的信息。 第一数字水印方法具有鲁棒性,使得当使用第一数字水印方法嵌入的信息的原始文档由复印机复制时,可以检测嵌入在复制文档中的信息。
    • 43. 发明授权
    • Information processing method and apparatus, and computer program and computer -readable storage medium
    • 信息处理方法和装置,以及计算机程序和计算机可读存储介质
    • US07272239B2
    • 2007-09-18
    • US10419815
    • 2003-04-22
    • Junichi Hayashi
    • Junichi Hayashi
    • G06K9/00
    • G06T1/0064G06T1/0028G06T2201/0051
    • This invention has as its object to provide a technique that can verify whether or not document data has been tampered with, by embedding identification information in document data in the background of the document data. To this end, this invention provides an information processing method for embedding additional information in document data, comprising a step of inputting document data, an extraction step of extracting identification information from the input document data as additional information, a step of inputting a predetermined image, an embedding step of embedding the additional information extracted in the extraction step in the input image, and a composition step of compositing the embedded image as a background image of the document data.
    • 本发明的目的是提供一种技术,其可以通过在文档数据的背景中将标识信息嵌入到文档数据中来验证文档数据是否已被篡改。 为此,本发明提供了一种用于在文档数据中嵌入附加信息的信息处理方法,包括输入文档数据的步骤,从输入文档数据中提取标识信息作为附加信息的提取步骤,输入预定图像的步骤 将在提取步骤中提取的附加信息嵌入到输入图像中的嵌入步骤,以及将嵌入图像合成为文档数据的背景图像的合成步骤。
    • 47. 发明授权
    • Digital phase lock loop circuit
    • 数字锁相环电路
    • US06628739B1
    • 2003-09-30
    • US09473140
    • 1999-12-28
    • Junichi Hayashi
    • Junichi Hayashi
    • H03D324
    • H03L7/093H03L7/0814H03L7/089H03L7/091
    • The present invention provides a digital phase lock loop circuit having a phase comparator for comparing a reference clock signal with a reference frequency to a synchronous signal generated on the basis of the reference frequency to output an output signal representing a comparison result, a delay control system connected to the phase comparator for receiving the output signal from the phase comparator to control a delay of the synchronous signal in accordance with the output signal, wherein an input circuit is further provided which is connected to an input side of the phase comparator so that the reference clock signal is inputted through the input circuit to the phase comparator, and the input circuit discontinues the input of the reference clock signal to the phase comparator upon receipt of a discontinuation signal.
    • 本发明提供了一种具有相位比较器的数字锁相环电路,该相位比较器用于将基准时钟信号与基准频率相比较,以基于参考频率产生的同步信号,以输出表示比较结果的输出信号,延迟控制系统 连接到相位比较器,用于接收来自相位比较器的输出信号,以根据输出信号控制同步信号的延迟,其中进一步提供输入电路,其连接到相位比较器的输入侧,使得 参考时钟信号通过输入电路输入到相位比较器,并且输入电路在接收到不连续信号时将参考时钟信号的输入中断到相位比较器。