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1.发明授权Method and electronic circuit for automatically measuring the horizontal scan frequency of a composite synchronism signal 失效一种用于自动测量的复合同步信号的水平扫描频率的方法和电子电路。
公开(公告)号：EP0442081B1
公开(公告)日：1995-03-01
申请号：EP90123965.7
申请日：1990-12-12
Applicant: SGS-THOMSON MICROELECTRONICS s.r.l.
Inventor： Gornati, Silvano , Betti, Giorgio , Sacchi, Fabrizio , Vai, Gianfranco , Zuffada, Maurizio
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2.发明授权Device for automatically selecting the demodulation standard of a video signal, useful with an intermediate frequency demodulator 失效安排一个Demodulationsnorm的自动选择与Zwischenfrequenzdemodulator可用的视频信号。
公开(公告)号：EP0320641B1
公开(公告)日：1994-12-28
申请号：EP88119205.8
申请日：1988-11-18
Applicant: SGS-THOMSON MICROELECTRONICS s.r.l.
Inventor： Zuffada, Maurizio , Sacchi, Fabrizio
IPC: H04N5/46
CPC classification number: H04N5/46
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3.发明公开Device for automatically selecting the demodulation standard of a video signal, useful with an intermediate frequency demodulator 失效用于自动选择视频信号的解调标准的方法和装置，可用于中间频率解调器
公开(公告)号：EP0320641A3
公开(公告)日：1991-10-09
申请号：EP88119205.8
申请日：1988-11-18
Applicant: SGS-THOMSON MICROELECTRONICS S.r.l.
Inventor： Zuffada, Maurizio , Sacchi, Fabrizio
IPC: H04N5/46
CPC classification number: H04N5/46
Abstract: A method, and related device, for automatically selecting the demodulation standard of a video signal, useful with an intermediate frequency demodulator (2), which has an output (13) for the demodulated signal and a so-called standard selecting input pin (12), consists of detecting the polarity of the demodulated signal at the output (13) of the demodulator (2) and comparing that polarity with the polarity of the input signal to the demodulator (2). The voltage value on the standard selecting pin (12) is changed over on detecting a different modulation polarity between the input and output video signals to/from the demodulator (2) to enable the latter to operate to the correct standard at all times.
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公开(公告)号：EP0394805B1
公开(公告)日：1995-02-22
申请号：EP90107222.3
申请日：1990-04-17
Applicant: SGS-THOMSON MICROELECTRONICS s.r.l.
Inventor： Betti, Giorgio , Zuffada, Maurizio , Sacchi, Fabrizio , Gornati, Silvano
IPC: G05F3/22
CPC classification number: G05F3/225 , Y10S323/907
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5.发明公开Control loop for reducing the time of response of a tuner-AGC of a superheterodyne receiver and relative leading edge differentiating circuit used in the control loop 失效用于减少超外差接收机调谐器的自动增益控制的响应时间和相关联的用于边缘相对上升微分电路的控制回路。
公开(公告)号：EP0439435A2
公开(公告)日：1991-07-31
申请号：EP91830006.2
申请日：1991-01-17
Applicant: SGS-THOMSON MICROELECTRONICS s.r.l.
Inventor： Gornati, Silvano , Betti, Giorgio , Sacchi, Fabrizio , Vai, Gianfranco , Zuffada, Maurizio
IPC: H03G3/30
CPC classification number: H03G3/3068
Abstract: In a dynamic automatic loop for control of the overall gain of an input circuit of a superheterodyne receiver, the response time of the HF-AGC circuit of the TUNER, in response to the action of the TUNER DELAY circuit activated by the IF-AGC in the case of autonomously uncontrollable abrupt increases in the level of the antenna signal from the same HF-AGC of the TUNER, is markedly reduced using an additional TUNER DELAY PLUS circuit able to absorb for a determined interval of time, a discharge current from the storage capacitor the control voltage of the HF-AGC in addition to the discharge current absorbed by the existing TUNER DELAY circuit. The relevant intensity of this additional discharge current and its duration are optimized by way of suitable circuital arrangements in the design of said TUNER DELAY PLUS circuit. The response time is reduced without modifying the time constant of the HF-AGC, which cannot be freely reduced because of inter- and cross-modulation problems.
Abstract translation: 在响应于TUNER延迟电路由IF AGC活化作用的动态自动环路用于超外差式接收机中，调谐器的RF AGC电路的响应时间，的输入电路的总增益的控制 自主地不可控的情况下，在从调谐器的相同的RF AGC的天线信号的电平突然增加，显着地使用附加的TUNER延迟加上电路能够吸收的时间确定的开采间隔，从所述存储的放电电流的减少 电容器控制所述RF AGC的电压除了由现有的TUNER延迟电路所吸收的放电电流。 该附加的放电电流和它的持续时间的相关强度是通过在所述调谐器延迟加上电路的设计合适circuital安排方式优化。 响应时间，而无需修改RF AGC，不能自由地减少由于间和交叉调制问题的时间常数减小。
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Patent Agency Ranking6.发明公开Intergrated circuit for generating a temperature independent, dynamically compressed voltage, function of the value of an external regulation resistance 失效集成电路，用于产生一个与温度无关的动态压缩电压是外部控制的电阻的函数。
公开(公告)号：EP0388369A2
公开(公告)日：1990-09-19
申请号：EP90830077.5
申请日：1990-03-01
Applicant: SGS-THOMSON MICROELECTRONICS S.r.l.
Inventor： Sacchi, Fabrizio , Zuffada, Maurizio , Betti, Giorgio , Gornati, Silvano
IPC: H03G3/10
CPC classification number: H03G3/10
Abstract: A conversion circuit generates a temperature- independent, dynamically compressed DC control voltage from an external regulation potentiometer. The conversion circuit uses a current mirror (T4,T5,T6) to convert linear variations in voltage (Vp) across the regulation potentiometer (Rt) into a logarithmic differential voltage between two output terminals (3, 4). One differential output (3) is fed to a unitary gain stage (B) which is blassed by a current generator (Ip) having a temperature coefficent corresponding to the reciprocal of the temperature coefficient of the integrated resistances. The output (5) of the unitary gain stage and the second current mirror output (4) are fed to a differential amplifier (C), which is also biassed by a current generator (Id) having a temperature coefficient corresponding to the reciprocal of the coefficient of the integrated resistances. On the output of the differential amplifier (6) is the required temperature-independent, dynamically compressed DC control voltage. The circuit is particularly useful for generating a control current for an AGC system.
Abstract translation: A转换电路基因率温度 - 独立的，动态压缩DC控制从罐的外部调节电压。 转换电路使用的电流镜（T4，T5，T6），以线性变化转换成横跨调节电位器（RT）电压（V p）成一个对数的差分电压两个输出端子之间（3，4）。 一个差动输出端（3）被供给到由具有温度系数对应于集成termoresistencias的温度系数的倒数的电流发生器（IP）blassed一个整体增益级（B）所有。 单一增益级和第二电流镜输出的输出（5）（4）被馈送到差分放大器（C），所有这些因此由具有温度系数对应于的倒数的电流发生器（Id）的偏压 集成termoresistencias的系数。 在差动放大器（6）的输出为所需要的温度无关的，动态压缩DC控制电压。 该电路是在AGC系统中产生的控制电流为特别有用。
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7.发明公开Generating a stop signal of an automatic search procedure for a broadcasting station using an available AFC signal 失效使用可用的AFC信号生成广播站的自动搜索程序的停止信号
公开(公告)号：EP0326527A3
公开(公告)日：1990-08-16
申请号：EP89830024.9
申请日：1989-01-25
Applicant: SGS-THOMSON MICROELECTRONICS S.r.l.
Inventor： Zuffada, Maurizio , Sacchi, Fabrizio
IPC: H03J7/28
CPC classification number: H03J7/28
Abstract: During an automatic search scan of a broadcasting station of a video receiver's tuner, the AFC signal generated by an existing automatic frequency control circuit of the receiver is applied to an input of four comparators. A first, switched threshold comparator (I) commutes when the AFC signal is greater than the two switched threshold values
VA' VA";
and enables a second comparator (II) with a fixed threshold V1 which has a value between the threshold values VA' and VA" of the first comparator. When the second comparator commutes it causes the generation by an output buffer (B) of a signal suitable for arresting the automatic search scan. When the automatic search scan is performed in the opposite direction, a similar detecting function is performed by means of a third (III), switched threshold, comparator commuting when the AFC signal is lower than the two switched threshold values:
VB' > AFC
and enables a fourth comparator (IV), with a fixed threshold V2 which has a value between the two threshold values VB' and VB" of the third comparator, and which by commuting causes the generation, by the same output buffer, of the arresting signal.-
8.发明公开Generating a stop signal of an automatic search procedure for a broadcasting station using an available AFC signal 失效由现有的AFC信号的装置产生一个广播站的自动搜索的方法的一个停止信号。
公开(公告)号：EP0326527A2
公开(公告)日：1989-08-02
申请号：EP89830024.9
申请日：1989-01-25
Applicant: SGS-THOMSON MICROELECTRONICS S.r.l.
Inventor： Zuffada, Maurizio , Sacchi, Fabrizio
IPC: H03J7/28
CPC classification number: H03J7/28
Abstract: During an automatic search scan of a broadcasting station of a video receiver's tuner, the AFC signal generated by an existing automatic frequency control circuit of the receiver is applied to an input of four comparators. A first, switched threshold comparator (I) commutes when the AFC signal is greater than the two switched threshold values
VA' VA";
and enables a second comparator (II) with a fixed threshold V1 which has a value between the threshold values VA' and VA" of the first comparator. When the second comparator commutes it causes the generation by an output buffer (B) of a signal suitable for arresting the automatic search scan. When the automatic search scan is performed in the opposite direction, a similar detecting function is performed by means of a third (III), switched threshold, comparator commuting when the AFC signal is lower than the two switched threshold values:
VB' > AFC
and enables a fourth comparator (IV), with a fixed threshold V2 which has a value between the two threshold values VB' and VB" of the third comparator, and which by commuting causes the generation, by the same output buffer, of the arresting signal.Abstract translation: 在上一个视频接收机的调谐器的广播站的自动搜索扫描，由所述接收器的现有的自动频率控制电路中生成的AFC信号被施加到上的四个比较器输入。 第一，切换阈值比较器（I）通勤当AFC信号大于所述两个切换阈值VA“
VA“;以及使第二比较器（II）与具有所述阈值之间的值固定的阈值V1 值VA“和VA“第一比较器。 当第二比较通勤它通过在适合于抑制自动搜索扫描的信号的输出缓冲器（B）导致的产生。 当自动搜索扫描在相反的方向上执行，类似的检测功能由第三（III）来进行，切换阈值时，比较器通勤当AFC信号低于所述两个切换阈值：VB“> AFC < VB“;以及启用第四比较（IV），与具有所述两个阈值VB第三比较器的‘和VB’之间的值固定的阈值V2，并且其通过通勤引起的产生，由相同的输出缓冲器， 止信号的。 -
公开(公告)号：EP0482495B1
公开(公告)日：1998-07-08
申请号：EP91117649.3
申请日：1991-10-16
Applicant: SGS-THOMSON MICROELECTRONICS s.r.l.
Inventor： Moloney, David , Zuffada, Maurizio , Vai, Gianfranco , Sacchi, Fabrizio
CPC classification number: G06F11/0763 , G06F7/00 , G06F11/085 , G06F11/28
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10.发明授权Intergrated circuit for generating a temperature independent, dynamically compressed voltage, function of the value of an external regulation resistance 失效集成电路，用于产生一个与温度无关的动态压缩电压是外部控制的电阻的函数。
公开(公告)号：EP0388369B1
公开(公告)日：1994-02-09
申请号：EP90830077.5
申请日：1990-03-01
Applicant: SGS-THOMSON MICROELECTRONICS s.r.l.
Inventor： Sacchi, Fabrizio , Zuffada, Maurizio , Betti, Giorgio , Gornati, Silvano
IPC: H03G3/10
CPC classification number: H03G3/10
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