Apparatus and method for encoding and decoding information in analog
signals
    1.
    发明授权
    Apparatus and method for encoding and decoding information in analog signals 失效
    用于对模拟信号中的信息进行编码和解码的装置和方法

    公开(公告)号:US5828325A

    公开(公告)日:1998-10-27

    申请号:US627107

    申请日:1996-04-03

    IPC分类号: H04H20/31 H03M7/00

    CPC分类号: H04H20/31

    摘要: A method and apparatus for encoding information symbols onto an analog host signal modifies signal peaks of the host signal to fall within predetermined amplitude bands. A set of symbols is defined wherein each symbol corresponds to a defined number of signal peaks or to a particular value of signal peak within a band. An additional information channel may be created by altering polarity changes of signal peaks in accordance with predetermined polarity sequences to represent a second set of defined symbols.

    摘要翻译: 用于将信息符号编码到模拟主机信号上的方法和装置将主机信号的信号峰值修改为落在预定幅度带内。 定义一组符号,其中每个符号对应于定义数量的信号峰值或频带内的信号峰值的特定值。 可以通过根据预定的极性序列改变信号峰值的极性变化来表示第二组定义的符号来创建附加信息信道。

    Apparatus and method for encoding and decoding information in audio
signals

    公开(公告)号:US5774452A

    公开(公告)日:1998-06-30

    申请号:US404278

    申请日:1995-03-14

    申请人: Jack Wolosewicz

    发明人: Jack Wolosewicz

    IPC分类号: H04H20/31 H04H5/00

    CPC分类号: H04H20/31

    摘要: A method and apparatus encodes and decodes machine readable signals in audio signals for producing humanly perceived audio transmissions. The encoding device includes circuitry for identifying portions of the audio signal having relatively low energy in a given band and relatively high energy in a band proximally below the given band. The machine readable signals are then inserted into the identified portions of the audio signal. According to another embodiment, the machine readable signals are encoded as a spread-spectrum signal which is added to the original audio signal. The spread-spectrum signal is scaled using a unique technique referred to as Common Mode Scaling.

    Mixed signal phase locked loop with process and temperature calibration
    4.
    发明授权
    Mixed signal phase locked loop with process and temperature calibration 失效
    混合信号锁相环,具有过程和温度校准

    公开(公告)号:US5892406A

    公开(公告)日:1999-04-06

    申请号:US735851

    申请日:1996-10-23

    IPC分类号: H03L7/099 H03L7/10

    摘要: A mixed signal phase locked loop is optimized for fast settling and low noise sensitivity. To this end, this device has a digital wide range delay line and a low gain per stage adjust. When first activated, the loop calibrates the digital delay line to its nominal delay characteristic. This delay line, together with the linear low gain per stage adjust, constitutes the internal oscillator of the phase locked loop. After achieving nominal delay, the oscillator uses the low gain per stage adjust to lock to a desired reference or a submultiple thereof. According to the preferred embodiment, the loop locks its internal 125 MHz oscillator to a 25 MHz reference. After achieving lock, the loop performs synchronous data recovery by locking to an incoming data stream, instead of the internal reference, and performing bit framing. In case of losing lock, the phase locked loop of the present invention is capable of recalibrating itself and regaining lock in under 3 microseconds.

    摘要翻译: 混合信号锁相环优化用于快速建立和低噪声灵敏度。 为此,该器件具有数字宽范围延迟线和每级低增益调整。 当第一次激活时,回路将数字延迟线校准为其额定延迟特性。 该延迟线与每级调节的线性低增益一起构成锁相环的内部振荡器。 在实现标称延迟之后,振荡器使用每级调节的低增益来锁定到期望的参考或其一个或多个。 根据优选实施例,环路将其内部125MHz振荡器锁定到25MHz参考。 锁定完成后,循环通过锁定到输入数据流而不是内部参考,并执行位框架来执行同步数据恢复。 在失锁的情况下,本发明的锁相环能够在3微秒内自行重新校准并重新锁定。

    Apparatus and method for encoding and decoding information in audio
signals
    5.
    发明授权
    Apparatus and method for encoding and decoding information in audio signals 失效
    用于对音频信号中的信息进行编码和解码的装置和方法

    公开(公告)号:US6005501A

    公开(公告)日:1999-12-21

    申请号:US083940

    申请日:1998-05-26

    申请人: Jack Wolosewicz

    发明人: Jack Wolosewicz

    IPC分类号: H04H20/31 H03M7/00

    CPC分类号: H04H20/31

    摘要: A method and apparatus encodes and decodes machine readable signals in audio signals for producing humanly perceived audio transmissions. The encoding device includes circuitry for identifying portions of the audio signal having relatively low energy in a given band and relatively high energy in a band proximally below the given band. The machine readable signals are then inserted into the identified portions of the audio signal. According to another embodiment, the machine readable signals are encoded as a spread-spectrum signal which is added to the original audio signal. The spread-spectrum signal is scaled using a unique technique referred to as Common Mode Scaling.

    摘要翻译: 一种方法和装置对音频信号中的机器可读信号进行编码和解码,以产生人为感知的音频传输。 编码设备包括用于识别在给定频带中具有相对较低能量的音频信号的部分的电路,以及在给定频带的近端范围内的频带中的相对较高的能量。 然后将机器可读信号插入音频信号的识别部分。 根据另一个实施例,机读信号被编码为加到原始音频信号的扩频信号。 使用称为共模缩放的独特技术对扩频信号进行缩放。

    Detecting online abuse in images
    8.
    发明授权
    Detecting online abuse in images 有权
    检测图像中的在线滥用

    公开(公告)号:US07925044B2

    公开(公告)日:2011-04-12

    申请号:US11670291

    申请日:2007-02-01

    IPC分类号: G06K9/00

    CPC分类号: G06K9/46 G06K2209/01

    摘要: Tools for analyzing images are disclosed. In some cases, the images are analyzed in order to determine whether a particular web site and/or email message is part of an illegitimate online activity. In an aspect, an image analysis process comprises comparing a suspect image with one or more elements of interest (which can include images, words, etc.) by generating fingerprints characterizing the suspect image and the elements of interest, to allow for a quantitative comparison.

    摘要翻译: 公开了分析图像的工具。 在某些情况下,分析图像以确定特定的网站和/或电子邮件消息是非法的在线活动的一部分。 在一方面,图像分析处理包括通过产生表征可疑图像和感兴趣元素的指纹来比较可疑图像与感兴趣的一个或多个元素(其可以包括图像,单词等),以允许定量比较 。

    DETECTING ONLINE ABUSE IN IMAGES
    9.
    发明申请
    DETECTING ONLINE ABUSE IN IMAGES 有权
    检测图像中的在线滥用

    公开(公告)号:US20080008348A1

    公开(公告)日:2008-01-10

    申请号:US11670291

    申请日:2007-02-01

    IPC分类号: G06K9/00

    CPC分类号: G06K9/46 G06K2209/01

    摘要: Tools for analyzing images are disclosed. In some cases, the images are analyzed in order to determine whether a particular web site and/or email message is part of an illegitimate online activity. In an aspect, an image analysis process comprises comparing a suspect image with one or more elements of interest (which can include images, words, etc.) by generating fingerprints characterizing the suspect image and the elements of interest, to allow for a quantitative comparison.

    摘要翻译: 公开了分析图像的工具。 在某些情况下,分析图像以确定特定的网站和/或电子邮件消息是非法的在线活动的一部分。 在一方面,图像分析处理包括通过产生表征可疑图像和感兴趣元素的指纹来比较可疑图像与感兴趣的一个或多个元素(其可以包括图像,单词等),以允许定量比较 。