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1. 发明专利

JPS57118476A Noise eliminating circuit 失效
标题翻译：噪声消除电路
公开(公告)号：JPS57118476A
公开(公告)日：1982-07-23
申请号：JP426481
申请日：1981-01-14
申请人： Nec Corp , Nec Ic Microcomput Syst Ltd
发明人： TOKUDA KAZUO , SAWADAISHI TOKIO
IPC分类号： H03K5/1252 , H04N5/08 , H04N5/213
CPC分类号： H04N5/08
摘要： PURPOSE: To eliminate the noise contained in the input signal, by providing a transistor in which an output is extracted out of the collector, comparing the emitter voltage of the transistor with the reference voltage and breaking the transistor with the output of comparison.
CONSTITUTION: The emitter voltage of a transistor TRQ
1 is compared with the reference voltage V
5 in order to eliminate the noise pulse superposed on a composite video signal V
1 . The output of this comparison is supplied to the base of a TRQ
2 with the emitter grounded, and the TRQ
1 is broken by the output of comparison. The voltage lower than the bias voltage V
4 by an amount equivalent to the base-emitter voltage of the TRQ
1 is set equal to the synchronous tip voltage of the signal V
1 . Then the self-biasing is carried out for the emitter of the TRQ
1 . As a result, a comparator A works to make the TRQ
2 conduct. Thus the base voltage of the TRQ
1 is set nearly at 0V, and the TRQ
1 is broken.
COPYRIGHT: (C)1982,JPO&Japio
摘要翻译：目的：为了消除输入信号中包含的噪声，通过提供从集电极中提取输出的晶体管，将晶体管的发射极电压与参考电压进行比较，并将晶体管与输出进行比较。构成：将晶体管TRQ1的发射极电压与参考电压V5进行比较，以消除叠加在复合视频信号V1上的噪声脉冲。该比较的输出提供给TRQ2的基极，发射极接地，TRQ1由比较输出断开。低于偏置电压V4的电压等于TRQ1的基极 - 发射极电压的电压被设定为等于信号V1的同步尖端电压。然后对TRQ1的发射器进行自偏置。因此，比较器A用于使TRQ2导通。因此，TRQ1的基极电压几乎为0V，TRQ1断开。

2. 发明专利

JPS62181513A TRANSISTOR CIRCUIT 失效
公开(公告)号：JPS62181513A
公开(公告)日：1987-08-08
申请号：JP17519386
申请日：1986-07-25
申请人： NEC CORP , NIPPON ELECTRIC IC MICROCOMPUT
发明人： SUGAWARA MITSUTOSHI , SAWADAISHI TOKIO
IPC分类号： H03F3/34 , H03F3/343 , H03F3/347
摘要： PURPOSE:To change the relation in phase of an input/output signal by providing a means connecting the 2nd output terminal of a current mirror in common to a signal output terminal of a collector of a transistor (TR) and obtaining an AC output signal current based on an AC input signal current so as to have only to change the circuit constant. CONSTITUTION:An impedance 8, a TR 4 and an emitter impedance 5 form a current mirror. The resistance of resistors R2, R3, R4 and R5 is selected as R2:R3=R4:R5 so that no DC output is caused and an output terminal 6 in terms of DC by the cancellation of the collector currents of the TRs Q2, 4. Since all components are formed on one semiconductor substrate except a resistor R6 and a capacitor C1 mounted externally, the circuit is suitable for the semiconductor integrated circuit. Further, the AC gain is decided by the impedance comprising the resistor R6 and the capacitor C1 connected to a gain adjustment terminal 12 and the relation of phase between the input and output is selected independently of the DC gain.

3. 发明专利

JPS5728407A Amplifying circuit 失效
标题翻译：放大电路
公开(公告)号：JPS5728407A
公开(公告)日：1982-02-16
申请号：JP10341880
申请日：1980-07-28
申请人： Nec Corp , Nec Eng Ltd
发明人： SUGAWARA MITSUTOSHI , SAWADAISHI TOKIO
IPC分类号： H03F3/343 , H03F3/30 , H03F3/34 , H03F3/347
CPC分类号： H03F3/3067
摘要： PURPOSE:To pick up an output signal changed in the phase relation from an inverting amplifier, by applying an output signal of a current Miller circuit given with an input signal to an input terminal and an output terminal of the inverting amplifier. CONSTITUTION:When a signal is given to an input terminal 14 of a current Miller circuit 2, a current in opposite phase and with a given value appears from output terminals 15, 16. Another current is converted into a voltage by an impedance 3 and given to the base of a transistor (TR) 4, and another current is given to the collector. An impedance 5 is connected to the emitter of the TR4 and the gain of the TR4 is adjusted. The output of the output terminal 16 of the current Miller circuit 2 and the collector output of the TR4 are opposite in the phase and they are synthesized at the connecting point. The phase of a signal outputted at an output terminal 6 can be changed, by changing the impedance 5.
摘要翻译：目的：通过将输入信号给出的电流米勒电路的输出信号施加到反相放大器的输入端和输出端，来拾取与反相放大器相位关系改变的输出信号。构成：当向当前的米勒电路2的输入端子14提供信号时，从输出端子15,16出现相反相位和给定值的电流。另一电流通过阻抗3转换为电压，并给出到晶体管（TR）4的基极，并且另一个电流被提供给集电极。阻抗5连接到TR4的发射极，并调整TR4的增益。当前的米勒电路2的输出端子16的输出和TR4的集电极输出在相位相反，并且在连接点被合成。可以通过改变阻抗5来改变输出端子6输出的信号的相位。

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