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1. 发明授权

US06876741B2 Device for detecting telephone line seizure 有权
标题翻译：电话线检测装置
公开(公告)号：US06876741B2
公开(公告)日：2005-04-05
申请号：US10480217
申请日：2002-06-05
申请人： Thomas Le Garrec
发明人： Thomas Le Garrec
IPC分类号： H04M1/00 , H04M1/82
CPC分类号： H04M1/82
摘要： The device for detecting telephone line seizure performs a measurement of voltage of the telephone line across a first and a second optocoupler connected in series to the telephone line and arranged head-to-tail. The first optocoupler makes it possible to discharge a capacitor connected to the telephone line, the second optocoupler converts the discharge current into an image current in a measurement circuit. This device comprises means ensuring negative feedback of the second optocoupler to the first optocoupler. With this layout, the influence of the transfer coefficients of the optocouplers on the voltage measurement is decreased, so as to increase the accuracy of measurement.
摘要翻译：用于检测电话线扣押的装置执行电话线的电压测量，所述电话线跨越与电话线串联连接的第一和第二光耦合器，并且以头对头的方式布置。第一光耦合器使得可以放电连接到电话线的电容器，第二光耦合器将放电电流转换为测量电路中的图像电流。该装置包括确保第二光耦合器对第一光耦合器的负反馈的装置。通过这种布局，光耦合器的传输系数对电压测量的影响减小，从而提高了测量精度。

2. 发明授权

US5970071A Method and device for insertion of asynchronous data in a digital signal 失效
标题翻译：用于在数字信号中插入异步数据的方法和装置
公开(公告)号：US5970071A
公开(公告)日：1999-10-19
申请号：US492600
申请日：1995-06-20
申请人： Thomas Le Garrec
发明人： Thomas Le Garrec
IPC分类号： H04N7/12 , H03H17/06 , H04J3/16 , H04N7/025 , H04N7/03 , H04N7/035 , H04N7/088 , H04N7/24 , H04N7/54 , H04J3/12
CPC分类号： H03H17/0628 , H04J3/1605 , H04N7/0882 , H04N7/24 , H04N7/54
摘要： The disclosure concerns a procedure for insertion of samples representing digital data from a first source having a first bit rate in a digitized signal from a second source having a second bit rate, wherein the second bit rate is greater than the first bit rate, and each data of the first source is associated with at least one sample of a series of samples at the second bit rate, the samples being presented to a polyphase filter for which a set of coefficients is associated with a specific phase error previously introduced by said associations, the filtered samples being included in the digitized signal. The invention also includes a device that implements the above insertion procedure. The invention is applicable notably in the field of insertion of Teletext data into a digitized video signal.
摘要翻译：本公开涉及一种用于将来自具有来自具有第二比特率的第二源的数字化信号中的具有第一比特率的第一源的样本表示为数字数据的步骤，其中第二比特率大于第一比特率，并且每个第一源的数据与第二比特率的一系列样本的至少一个样本相关联，所述样本被呈现给多相滤波器，其中一组系数与由所述关联先前引入的特定相位误差相关联，滤波后的样本被包括在数字化信号中。本发明还包括实现上述插入过程的装置。本发明特别适用于将图文电视数据插入数字化视频信号的领域。

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