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公开(公告)号：US07714269B2
公开(公告)日：2010-05-11
申请号：US12068081
申请日：2008-02-01
IPC分类号： H01J40/14
CPC分类号： G11B7/13 , H03F3/087 , H03F3/45475 , H03F2203/45136 , H03G3/02 , H03G3/3084
摘要： A light receiving circuit according to the present invention includes a current control voltage generation circuit 10 outputting control voltages Vcont1 and Vcont2, a first current adjusting circuit 11 generating a first output current Io1 by regulating a first input current Ii1 depending on a voltage difference of the control voltages Vcont1 and Vcont2, the first input current Ii1 generated by adding a first reference current Ia1 and an input current Ipd, a second current adjusting circuit 12 generating a second output current Io2 by regulating a second reference current Ia2 depending on the voltage difference of the control voltages Vcont1 and Vcont2, and a current voltage conversion circuit 13 generating a first output voltage Vo1 by converting the first output current Io1 to voltage based on a first resistance Rf1 and generating a second output voltage Vo2 by converting the second output current Io2 to voltage based on a second resistance Rf2.
摘要翻译： 根据本发明的光接收电路包括输出控制电压Vcont1和Vcont2的电流控制电压产生电路10，第一电流调节电路11，其通过根据第一输入电流I i1的电压差来调节第一输入电流Ii1，产生第一输出电流Io 控制电压Vcont1和Vcont2，通过加上第一参考电流Ia1和输入电流Ipd产生的第一输入电流Ii1，通过根据电压差调节第二参考电流Ia2来产生第二输出电流Io2的第二电流调节电路 控制电压Vcont1和Vcont2以及电流电压转换电路13，通过将第一输出电流Io1转换为基于第一电阻Rf1的电压并产生第二输出电压Vo2，从而产生第一输出电压Vo1，通过将第二输出电流Io2转换为 基于第二电阻Rf2的电压。
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公开(公告)号：US20080197890A1
公开(公告)日：2008-08-21
申请号：US12068081
申请日：2008-02-01
IPC分类号： H02M11/00
CPC分类号： G11B7/13 , H03F3/087 , H03F3/45475 , H03F2203/45136 , H03G3/02 , H03G3/3084
摘要： A light receiving circuit according to the present invention includes a current control voltage generation circuit 10 outputting control voltages Vcont1 and Vcont2, a first current adjusting circuit 11 generating a first output current Io1 by regulating a first input current Ii1 depending on a voltage difference of the control voltages Vcont1 and Vcont2, the first input current Ii1 generated by adding a first reference current Ia1 and an input current Ipd, a second current adjusting circuit 12 generating a second output current Io2 by regulating a second reference current Ia2 depending on the voltage difference of the control voltages Vcont1 and Vcont2, and a current voltage conversion circuit 13 generating a first output voltage Vo1 by converting the first output current Io1 to voltage based on a first resistance Rf1 and generating a second output voltage Vo2 by converting the second output current Io2 to voltage based on a second resistance Rf2.
摘要翻译： 根据本发明的光接收电路包括输出控制电压Vcont1和Vcont2的电流控制电压产生电路10，第一电流调节电路11，其通过根据第一输入电流I 1调节第一输入电流Ii 1产生第一输出电流Io 控制电压Vcont1和Vcont2的电压差，通过将第一参考电流Ia 1和输入电流Ipd相加而产生的第一输入电流Ii 1，通过调节第二电流I 2产生第二输出电流Io 2的第二电流调节电路12 参考电流Ia 2取决于控制电压Vcont 1和Vcont 2的电压差，以及电流电压转换电路13，通过将第一输出电流Io 1转换为基于第一电阻Rf 1的电压来产生第一输出电压Vo 1 以及通过将第二输出电流Io 2转换为基于第二电阻Rf 2的电压来产生第二输出电压Vo 2。
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公开(公告)号：US4414569A
公开(公告)日：1983-11-08
申请号：US339225
申请日：1982-01-13
申请人： Kazuo Tokuda , Tokio Sawataishi
发明人： Kazuo Tokuda , Tokio Sawataishi
IPC分类号： H03K5/1252 , H04N5/08 , H04N5/213
CPC分类号： H04N5/08
摘要： The present invention provides a transistor circuit suited for a synchronizing signal separator. More particularly, the transistor circuit can separate the noise-free synchronizing signal from a composite video signal.The transistor circuit comprises a transistor having an emitter coupled to an input terminal through a capacitor and to a constant current source, a base applied with a bias voltage and a collector connected to an output terminal, a comparator comparing the emitter voltage with a reference voltage, and means for turning the transistor off in response to the comparator output. A current charging circuit is preferably added.
摘要翻译： 本发明提供一种适用于同步信号分离器的晶体管电路。 更具体地，晶体管电路可以将无噪声同步信号与复合视频信号分离。 晶体管电路包括晶体管，其具有通过电容器连接到输入端的发射极和恒定电流源，施加有偏置电压的基极和连接到输出端子的集电极;将发射极电压与参考电压进行比较的比较器 以及用于响应于比较器输出使晶体管截止的装置。 优选添加电流充电电路。
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公开(公告)号：US4562412A
公开(公告)日：1985-12-31
申请号：US499387
申请日：1983-05-31
CPC分类号： H03L7/24
摘要： An oscillation circuit has a free-running oscillator operating at a predetermined frequency. A signal generator generates a trigger signal in synchronism with an input signal. The trigger signal is supplied to the free-running oscillator to bring the signal level in the oscillator to a reference level. The oscillator keeps its frequency even when there is no input signal, the frequency being approximately equal to an integer multiplied by the frequency of the input signal.
摘要翻译： 振荡电路具有以预定频率工作的自由振荡的振荡器。 信号发生器与输入信号同步地产生触发信号。 触发信号被提供给自由振荡器，以使振荡器中的信号电平达到参考电平。 即使没有输入信号，振荡器也保持其频率，频率近似等于整数乘以输入信号的频率。
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