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公开(公告)号：US06313701B1
公开(公告)日：2001-11-06
申请号：US09440681
申请日：1999-11-12
申请人： Franco Mussino , Massimo Notargiacomo , Gianluca Gobetti , Giuseppe Ravasio , Claudio Zammarchi
发明人： Franco Mussino , Massimo Notargiacomo , Gianluca Gobetti , Giuseppe Ravasio , Claudio Zammarchi
IPC分类号： H03F126
CPC分类号： H04B10/58 , H04B1/62 , H04B10/505
摘要： The present invention relates to a method and to a signal predistorter circuit for eliminiating the nonlinearities in the input/output characteristics of nonlinear stages, in particular for eliminating the third-order nonlinearities. More particularly, it relates to a method and to a predistorter circuit for external optical modulators of television signals. The method for predistortion of a signal of variable amplitude comprises the phases of: delivering the said signal to at least one first distorter circuit; biasing the said at least one first distorter circuit; distorting the said signal in the said at least one first distorter circuit; characterized in that the said phase of biasing the said at least one first distorter circuit comprises the phase of maintaining a substantially constant preset voltage value on varying the amplitude of the said signal at the said at least one first distorter circuit.
摘要翻译： 本发明涉及一种用于消除非线性阶段的输入/输出特性中的非线性的方法和信号预失真器电路，特别是用于消除三阶非线性。 更具体地说，它涉及一种用于电视信号的外部光调制器的方法和预失真器电路。 用于预失真的可变幅度信号的方法包括以下阶段：将所述信号传送到至少一个第一变压器电路; 偏压所述至少一个第一变压器电路; 在所述至少一个第一变压器电路中使所述信号失真; 其特征在于，偏置所述至少一个第一变压器电路的所述相位包括在所述至少一个第一变压器电路上改变所述信号的振幅时保持基本恒定的预设电压值的相位。
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公开(公告)号：US5812297A
公开(公告)日：1998-09-22
申请号：US720463
申请日：1996-09-30
CPC分类号： H04B10/50595 , G02F1/0123 , H04B10/5057 , H04B10/50575 , H04B10/58 , H04B2210/075
摘要： An analog-external-modulation optical, emitter is described which comprises an electro-optical modulator and a piloting circuit. The piloting circuit comprises a pilot-tone-generating circuit; an electric control signal generated by the optical signal coming out of the modulator and a predetermined bias voltage are fed to the input of a differential amplifier the output of which is added to the pilot tone to feed an electric input of the electro-optical modulator. The RF input of the analog electric signal is connected to a linearizer circuit to which the pilot-tone-generating circuit is also connected. The output of the linearizer circuit is sent to an electric input of the electro-optical modulator through a band-stop filter adapted to eliminate the pilot tone downstream of the linearizer circuit.
摘要翻译： 描述了一种模拟 - 外部调制光学发射器，其包括电光调制器和导频电路。 导频电路包括导频音产生电路; 由调制器出来的光信号产生的电控信号和预定的偏置电压被馈送到差分放大器的输入端，差分放大器的输出被加到导频音上，以馈送电光调制器的电输入端。 模拟电信号的RF输入连接到导频音产生电路也连接到的线性化电路。 线性化电路的输出通过适于消除线性化电路下游导频的带阻滤波器发送到电光调制器的电输入端。
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公开(公告)号：US20130027608A1
公开(公告)日：2013-01-31
申请号：US13639459
申请日：2011-04-11
IPC分类号： H04N7/01
CPC分类号： H04N7/0122
摘要： A method for displaying a video stream according to a format defined by a user, wherein a graphic element is superimposed on the displayed video stream, and wherein the dimensions and/or position of the graphic element are modified as a function of commands received from the user, so as to define a screen area in which a certain portion of the frames of the video stream is displayed. The video stream is then displayed in a format wherein, for each frame, the frame portion defined by the graphic element is displayed with altered dimensions and/or position on the screen.
摘要翻译： 一种用于根据由用户定义的格式显示视频流的方法，其中图形元素叠加在所显示的视频流上，并且其中所述图形元素的尺寸和/或位置被修改为根据从 用户，以便定义其中显示视频流的某一部分帧的屏幕区域。 视频流然后以格式显示，其中，对于每个帧，由图形元素限定的帧部分以改变的尺寸和/或位置在屏幕上显示。
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公开(公告)号：US09706162B2
公开(公告)日：2017-07-11
申请号：US13639459
申请日：2011-04-11
IPC分类号： H04N7/01
CPC分类号： H04N7/0122
摘要： A method for displaying a video stream according to a format defined by a user, wherein a graphic element is superimposed on the displayed video stream, and wherein the dimensions and/or position of the graphic element are modified as a function of commands received from the user, so as to define a screen area in which a certain portion of the frames of the video stream is displayed. The video stream is then displayed in a format wherein, for each frame, the frame portion defined by the graphic element is displayed with altered dimensions and/or position on the screen.
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公开(公告)号：US5432507A
公开(公告)日：1995-07-11
申请号：US140785
申请日：1993-10-21
申请人： Franco Mussino , Marco Roccato
发明人： Franco Mussino , Marco Roccato
摘要： A method for the improvement of distribution network management, in particular of a gas, water, electric energy or heat network that provides the possibility of telemetry of data by means of a central station and a plurality of peripheral stations connected to the central station. The relevant data is subsected to simultaneous reading of a plurality of peripheral stations and the successive transmission of such data to the central station.
摘要翻译： 一种用于改进配电网络管理的方法，特别是用于通过中央站和连接到中心站的多个外围站提供数据遥测的可能性的气体，水，电能或热网络。 相关数据被分组以同时读取多个外围站，并将这些数据连续发送到中心站。
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