公开(公告)号：US07050116B2

公开(公告)日：2006-05-23

申请号：US10299160

申请日：2002-11-18

申请人： Francois Van Zanten ,  Marc Sabut ,  Raymond Ribas

发明人： Francois Van Zanten ,  Marc Sabut ,  Raymond Ribas

IPC分类号： H04N5/14 ,  H04N5/18 ,  H04N5/52

CPC分类号： H04N5/18

摘要： An input stage for a video receiver includes a variable gain amplifier, an analog-to-digital converter for sampling a video signal and a digital processing unit for processing digital samples of the video signal. An analog regulating circuit sets an input potential at an input of the variable gain amplifier. A differential architecture is used for the variable gain amplifier and the digital analog converter. A conversion circuit between an input coupling capacitor and the variable gain amplifier allows generating the video signal on two channels in antiphase, which are centered on the common mode voltage. Such differential architecture allows reducing the amplitude of analog signals, which is particularly advantageous in the case of a low voltage supply delivering a few volts. In addition, linearity of the video signal processing is enhanced.

公开(公告)号：US06816006B2

公开(公告)日：2004-11-09

申请号：US10360833

申请日：2003-02-07

申请人： Jean Ravatin ,  Michel Mouret ,  Francois Van Zanten

发明人： Jean Ravatin ,  Michel Mouret ,  Francois Van Zanten

IPC分类号： H03B100

CPC分类号： H04B1/30

摘要： The method includes an adjustment phase in which a filtering device is operated as an oscillator, the frequency of oscillation of the filtering device is determined, and the characteristics of the filtering device are corrected with respect to the determined oscillation frequency and to a pre-established relation between the frequency of oscillation and the theoretical cutoff frequency, in such a way as to confer upon the filtering device a cutoff frequency equal to the theoretical cutoff frequency to within a tolerance. After the adjustment phase, a working phase takes place in which the filtering device carries out its filtering function.

摘要翻译： 该方法包括滤波装置作为振荡器操作的调整相位，确定滤波装置的振荡频率，并且根据确定的振荡频率校正滤波装置的特性，并将其预先建立 振荡频率与理论截止频率之间的关系，以使得滤波装置将等于理论截止频率的截止频率提供到容限内。 在调整阶段之后，进行过滤装置进行过滤功能的工作阶段。

公开(公告)号：US20080030275A1

公开(公告)日：2008-02-07

申请号：US11890628

申请日：2007-08-06

申请人： Francois Van Zanten

发明人： Francois Van Zanten

IPC分类号： H03F3/45 ,  H03F3/68

CPC分类号： H03F3/45183 ,  H03F1/086

摘要： An embodiment of an amplifier circuit comprising a succession of amplification stages having at least a first amplification stage receiving a first signal and a second amplification stage downstream of the first amplification stage; a stage of unity gain capable of receiving the first signal and of providing a second signal corresponding to the low-impedance copy of the first signal; and a third amplification stage having its input connected to the output of the stage of unity gain by a capacitor and having its output connected to the output of the second amplification stage.

摘要翻译： 放大器电路的实施例包括一系列具有至少第一放大级接收第一信号的放大级和第二放大级在第一放大级下游; 能够接收第一信号并提供对应于第一信号的低阻抗拷贝的第二信号的单位增益级; 以及第三放大级，其输入端通过电容器连接到单位增益级的输出，并且其输出端连接到第二放大级的输出端。

公开(公告)号：US4564855A

公开(公告)日：1986-01-14

申请号：US473672

申请日：1983-03-08

申请人： Francois Van Zanten

发明人： Francois Van Zanten

IPC分类号： H01L21/761 ,  H01L27/082 ,  H01L27/04

CPC分类号： H01L27/0826 ,  H01L21/761

摘要： A structure associating a high current NPN transistor with a PNP control transistor also able to withstand relatively high currents in an integrated circuit structure. This structure comprises an N.sup.+ type substrate overlaid by a P type epitaxied layer and a second N type epitaxied layer. The PNP transistor is disposed in the center of a region defined by two successive peripheral isolating walls. The NPN transistor is disposed in the annular zone. In this zone, the N.sup.+ substrate and the N layer are connected together by a buried N.sup.+ type layer locally short-circuiting the P type layer along a ring, thus isolating the central part of this layer at the level of the PNP transistor.

摘要翻译： 将高电流NPN晶体管与PNP控制晶体管相关联的结构也能够承受集成电路结构中的较高电流。 该结构包括由P型上覆层和第二N型表面层覆盖的N +型衬底。 PNP晶体管设置在由两个连续的外围隔离壁限定的区域的中心。 NPN晶体管设置在环形区域中。 在该区域中，N +衬底和N层通过掩埋的N +型层连接在一起，沿着环将P型层局部短路，从而将该层的中心部分隔离在PNP晶体管的电平。

公开(公告)号：US4410856A

公开(公告)日：1983-10-18

申请号：US217235

申请日：1980-12-17

申请人： Francois van Zanten

发明人： Francois van Zanten

IPC分类号： H03D3/00 ,  H03D3/24 ,  H04N9/64 ,  H04N11/18 ,  H04N9/50

CPC分类号： H04N11/186 ,  H03D3/241

摘要： A frequency demodulator circuit having an automatic gain control. The circuit will find particular use in SECAM color television receivers. The demodulator has two inputs; one receives alternately the reference frequency (during a sampling interval) and the frequency to be demodulated (between the sampling intervals). The other input receives a voltage for correcting the slope of the demodulator. The correcting signal is updated during each sampling and is provided by a feedback loop from the output of the demodulator, a reference frequency, and a reference voltage.

摘要翻译： 一种具有自动增益控制的频率解调器电路。 该电路将在SECAM彩色电视接收机中使用。 解调器有两个输入; 一个接收参考频率（在采样间隔期间）和要解调的频率（采样间隔之间）。 另一个输入接收用于校正解调器斜率的电压。 校正信号在每个采样期间被更新，并且由解调器的输出，参考频率和参考电压的反馈回路提供。

公开(公告)号：US06731159B2

公开(公告)日：2004-05-04

申请号：US10299159

申请日：2002-11-18

申请人： Francois Van Zanten ,  Marc Sabut ,  Raymond Ribas

发明人： Francois Van Zanten ,  Marc Sabut ,  Raymond Ribas

IPC分类号： G05F326

CPC分类号： G05F3/262

摘要： A mirroring circuit operating at high frequencies is provided. The mirroring circuit includes a first branch having a first transistor in series with a first resistor, a second branch having a second transistor in series with a second resistor, and a servo circuit for controlling current flowing in the first branch and the second branch. The servo circuit includes a third transistor configured as a diode, a source of the third transistor coupled to a source of the first transistor, a fourth transistor configured as a shift lever, a source of the fourth transistor coupled to ground via a third resistor, a fifth transistor configured as a diode, a source of the fifth transistor coupled to a source of the second transistor, and a sixth transistor configured as a shift lever, a source of the sixth transistor coupled to ground via the third resistor.

摘要翻译： 提供以高频操作的镜像电路。 镜像电路包括具有与第一电阻器串联的第一晶体管的第一分支，具有与第二电阻器串联的第二晶体管的第二分支和用于控制在第一分支和第二分支中流动的电流的伺服电路。 伺服电路包括被配置为二极管的第三晶体管，耦合到第一晶体管的源极的第三晶体管的源极，配置为变换杆的第四晶体管，经由第三电阻器耦合到地的第四晶体管的源极， 配置为二极管的第五晶体管，耦合到第二晶体管的源极的第五晶体管的源极和被配置为变换杆的第六晶体管，第六晶体管的源极经由第三电阻器耦合到地。

公开(公告)号：US4466011A

公开(公告)日：1984-08-14

申请号：US263203

申请日：1981-05-13

申请人： Francois Van Zanten

发明人： Francois Van Zanten

IPC分类号： H01L21/761 ,  H01L27/02 ,  H01L27/082 ,  H01L29/06 ,  H01L27/04

CPC分类号： H01L21/761 ,  H01L27/0248 ,  H01L27/0821 ,  H01L29/0646

摘要： In a bipolar integrated circuit, wherein the elementary components are formed in islands of an N-type epitaxial layer surrounded by P-type isolation walls, a protection against leakage currents is obtained by surrounding an island susceptible to receive negative voltage surges with an annular island. The isolation wall between the considered island and the annular island is connected to the potential of the most negative supply source and the isolation wall external to the annular island is connected thereto.

摘要翻译： 在双极集成电路中，其中基本分量形成在由P型隔离壁围绕的N型外延层的岛中，通过围绕容易受到负电压浪涌的岛环绕岛状环来获得对泄漏电流的保护 。 所考虑的岛和环岛之间的隔离壁连接到最负电源的电位，并且环形岛外部的隔离壁连接到其上。

公开(公告)号：US6002295A

公开(公告)日：1999-12-14

申请号：US955211

申请日：1997-10-21

申请人： Marc Gens ,  Francois Van Zanten

发明人： Marc Gens ,  Francois Van Zanten

IPC分类号： G05F1/59 ,  G05F1/10

CPC分类号： G05F1/59

摘要： The present invention relates to a voltage regulator, including at least two input terminals for receiving, each, an independent supply voltage, and including a means for automatically selecting the highest supply voltage from among the voltages present at the input terminals, and a means for insulating the supply terminal associated with the lowest voltage from the rest of the circuit, these means introducing a very low voltage drop between the input terminal at the highest voltage and an output terminal of the regulator.

摘要翻译： 电压调节器技术领域本发明涉及一种电压调节器，包括至少两个用于接收独立电源电压的输入端子，并且包括用于从存在于输入端子处的电压中自动选择最高电源电压的装置，以及用于 将与电路其余部分的最低电压相关联的电源端子绝缘，这意味着在最高电压的输入端子和调节器的输出端子之间引入非常低的电压降。