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11. 发明授权

US4347531A Circuit converting a pair of differential input signals to single-ended output signals 失效
标题翻译：将一对差分输入信号电路转换为单端输出信号
公开(公告)号：US4347531A
公开(公告)日：1982-08-31
申请号：US186706
申请日：1980-09-12
申请人： Akira Yamakoshi , Kyoichi Murakami , Tsutomu Niimura
发明人： Akira Yamakoshi , Kyoichi Murakami , Tsutomu Niimura
IPC分类号： H03F3/30 , H03F3/347 , H03F3/45 , H03G1/00 , H03G3/10 , H04N5/18
CPC分类号： H03G1/0023 , H03F3/3066 , H03F3/347 , H03F3/45071 , H03G3/10
摘要： A signal converting circuit, which has particular application as a pedestal clamp circuit for a video signal, includes a differential amplifier having a pair of transistors which produce first and second differential currents at the respective collectors thereof; a first circuit supplied with the first differential current and including a diode and a first resistor having a first resistance value connected in series between the collector of one of the transistors of the differential amplifier and a reference potential; a second circuit supplied with the second differential current and including a second resistor having a second resistance value and a transistor having its collector emitter path connected in series with the second resistor between the collector of the other transistor of the differential amplifier and the reference potential; and an output circuit for producing an output current in response to the second differential current and including a current mirror transistor having its base-collector path connected in parallel with the collector-emitter path of the transistor of the second circuit, wherein the current gain of the signal converting circuit is controlled by the resistance values of the first and second resistors.
摘要翻译：具有作为视频信号的基座钳位电路的特殊应用的信号转换电路包括具有一对晶体管的差分放大器，该晶体管在其各自的集电极处产生第一和第二差分电流; 提供有第一差分电流并包括二极管的第一电路和具有串联连接在差分放大器的一个晶体管的集电极与参考电位之间的第一电阻值的第一电阻; 提供有第二差分电流的第二电路，并且包括具有第二电阻值的第二电阻器和晶体管，其晶体管的集电极发射极路径与差分放大器的另一晶体管的集电极与参考电位之间的第二电阻器串联; 以及输出电路，用于响应于第二差分电流产生输出电流，并且包括其基极集电极路径与第二电路的晶体管的集电极 - 发射极路并联连接的电流镜晶体管，其中，信号转换电路由第一和第二电阻器的电阻值控制。

12. 发明授权

US4163989A Detector circuit for color television receivers 失效
标题翻译：彩色电视接收机检测电路
公开(公告)号：US4163989A
公开(公告)日：1979-08-07
申请号：US903003
申请日：1978-05-04
申请人： Susumu Akazawa , Kyoichi Murakami , Kiyoshi Ishihata , Takao Tsuchiya
发明人： Susumu Akazawa , Kyoichi Murakami , Kiyoshi Ishihata , Takao Tsuchiya
IPC分类号： H03D1/18 , H04N9/68 , H04N9/71 , H04N9/535 , H03D1/02
CPC分类号： H04N9/68 , H04N9/71
摘要： A detector circuit for a color television receiver includes a pair of transistors whose collector-emitter circuits are connected in parallel with each other, an input circuit, such as a differential amplifier, for supplying a differential input signal to the base electrodes of the pair of transistors, an impedance element coupled between the collector electrodes of the pair of transistors and a voltage source, and an integration circuit for integrating a detected signal taken from the collector electrodes of the pair of transistors and thereby providing an output signal. A reference-voltage circuit is included to supply a reference voltage, which can be used as a threshold voltage, to the emitter electrodes of the pair of transistors. The detector circuit is advantageously used in the color demodulating circuit of a color television receiver, wherein an oscillator controlled by color burst signals supplies the input signal to the detector circuit, and the output thereof is used to control the gain of an ACC amplifier.
摘要翻译：用于彩色电视接收机的检测器电路包括一对晶体管，其集电极 - 发射极彼此并联连接;输入电路，例如差分放大器，用于将差分输入信号提供给该对晶体管，耦合在该对晶体管的集电极之间的阻抗元件和电压源，以及积分电路，用于对从该对晶体管的集电极获取的检测信号进行积分，从而提供输出信号。包括参考电压电路，以将可用作阈值电压的参考电压提供给该对晶体管的发射极。检测器电路有利地用在彩色电视接收机的彩色解调电路中，其中由色同步信号控制的振荡器将输入信号提供给检测器电路，并且其输出用于控制ACC放大器的增益。

13. 发明授权

US06191826B1 Projector apparatus 失效
标题翻译：投影仪
公开(公告)号：US06191826B1
公开(公告)日：2001-02-20
申请号：US08974544
申请日：1997-11-19
申请人： Kyoichi Murakami , Hiroaki Endo , Hiroshi Murayama , Atsushi Iwamura
发明人： Kyoichi Murakami , Hiroaki Endo , Hiroshi Murayama , Atsushi Iwamura
IPC分类号： H04N931
CPC分类号： H04N9/3188 , H04N9/3105 , H04N9/3182
摘要： The projector apparatus comprises an image signal processor for generating color drive signals of at least four channels, which correspond to at least four kinds of colors including the colors selected according to the spectrum of the light source, from the three primary color image signals; a light-splitting device for splitting the light from the light source into at least four kinds of lights according to the colors corresponding to the color drive signals generated in the image signal processor; light valves, each of which comprises a liquid crystal element driven by the color drive signal for modulating each of the light splitted from that of the light source by the light-splitting device; and a combining device for combining each of components of light modulated by the light valves.
摘要翻译：投影仪装置包括图像信号处理器，用于从三原色图像信号产生至少四个通道的颜色驱动信号，其对应于包括根据光源的光谱选择的颜色的至少四种颜色; 光分离装置，用于根据与图像信号处理器中产生的彩色驱动信号相对应的颜色将来自光源的光分成至少四种光; 光阀，每个光阀包括由彩色驱动信号驱动的液晶元件，用于通过光分离装置调制与光源分离的每个光; 以及组合装置，用于组合由光阀调制的光的每个分量。

14. 发明授权

US5210796A Stereo/monaural detection apparatus 失效
标题翻译： STEREO / MONAURAL检测装置
公开(公告)号：US5210796A
公开(公告)日：1993-05-11
申请号：US785758
申请日：1991-10-31
申请人： Atsushi Hirabayashi , Kenji Komori , Kyoichi Murakami
发明人： Atsushi Hirabayashi , Kenji Komori , Kyoichi Murakami
IPC分类号： H04N5/60 , H04H1/00 , H04H40/81 , H04S1/00 , H04S7/00
CPC分类号： H04S1/00 , H04H40/81
摘要： A stereo/monaural detection apparatus for detecting whether two-channel input audio signals are stereo or monaural, wherein the level difference between the input audio signals is calculated, and after the signal representing the level difference is discriminated with a predetermined hysteresis maintained, a stereo/monaural detection is performed in accordance with the result of such discrimination, thereby preventing an erroneous detection that may otherwise be caused by any level difference variation during a short time as in a case where the sound field is positioned at the center in the stereo signals. And the discrimination with the hysteresis is partially inhibited in response to the signal obtained by discriminating the level sum of the input audio signals at a predetermined reference level, hence preventing instability of the operation when the audio input level is extremely feeble.

15. 发明授权

US4369411A Circuit for converting single-ended input signals to a pair of differential output signals 失效
标题翻译：用于将单端输入信号转换为一对差分输出信号的电路
公开(公告)号：US4369411A
公开(公告)日：1983-01-18
申请号：US186566
申请日：1980-09-12
申请人： Tsutomu Niimura , Kyoichi Murakami , Akira Yamakoshi
发明人： Tsutomu Niimura , Kyoichi Murakami , Akira Yamakoshi
IPC分类号： H03F3/343 , H03F3/30 , H03F3/34 , H03F3/45 , H03G1/00 , H03G3/10
CPC分类号： H03G1/0023 , H03F3/30 , H03F3/45071
摘要： A signal converting circuit for converting a single-ended input signal to a pair of differential output signals includes a current source for generating a constant current; an input signal generating circuit for generating an input signal current; a first path including at least one diode connected to the current source and the input signal generating circuit for producing a first differential current as a function of the constant current and the input signal current; a second path including a series combination of a diode and the collector-emitter path of a transistor connected to the current source and the input signal generating circuit for producing a second differential current as a function of the constant current and the input signal current, the transistor being supplied with a current at its input; a differential amplifier output circuit having two transistors connected to the first and second paths for producing differential output signals in response to the first and second differential currents; and a circuit for eliminating the effect on the differential output signals of the current at the input of the transistor, the circuit for eliminating including a transistor having its collector-emitter path connected between the first path and ground and a diode connected between the second path and ground.
摘要翻译：用于将单端输入信号转换成一对差分输出信号的信号转换电路包括用于产生恒定电流的电流源; 用于产生输入信号电流的输入信号产生电路; 第一路径，包括连接到电流源的至少一个二极管和用于产生作为恒定电流和输入信号电流的函数的第一差分电流的输入信号产生电路; 第二路径包括二极管和连接到电流源的晶体管的集电极 - 发射极路径的串联组合和用于产生作为恒定电流和输入信号电流的函数的第二差分电流的输入信号发生电路，晶体管在其输入端提供电流; 差分放大器输出电路，具有连接到第一和第二路径的两个晶体管，用于响应于第一和第二差分电流产生差分输出信号; 以及用于消除对在晶体管的输入处的电流的差分输出信号的影响的电路，用于消除的电路包括其集电极 - 发射极路径连接在第一路径和地之间的晶体管和连接在第二路径之间的二极管和地面。

16. 发明授权

US4175241A Master-slave flip-flop circuit 失效
标题翻译：主从触发器电路
公开(公告)号：US4175241A
公开(公告)日：1979-11-20
申请号：US909111
申请日：1978-05-24
申请人： Takao Tsuchiya , Susumu Akazawa , Kyoichi Murakami
发明人： Takao Tsuchiya , Susumu Akazawa , Kyoichi Murakami
IPC分类号： H03K3/037 , H03K1/12
CPC分类号： H03K3/0372
摘要： This invention is a phase inversion circuit of improved stability of operation for a master-slave flip-flop circuit. An additional gating circuit is controlled by two signals, one from an output of the slave flip-flop circuit and the other from an externally applied phase inversion signal. The output of the additional gating circuit is connected to the master flip-flop circuit through a circuit means that also receives a signal from the slave flip-flop output circuit. In the absence of inversion signals the circuit means controls the master flip-flop circuit from the slave flip-flop circuit and the master flip-flop circuit controls the slave flip-flop circuit with the assistance of the timing pulses in the usual manner. The phase inversion signal can be applied over a wide range of timing intervals of the timing circuit provided the inversion signal overlaps at least partly one of the timing pulses of the regular timing signal when the normal output signal of the slave flip-flop is a " 0" and the normal output signal of the master flip-flop circuit is also a " 0".
摘要翻译：本发明是一种提高主从触发器电路工作稳定性的相位反转电路。附加门控电路由两个信号控制，一个来自从触发器电路的输出，另一个来自外部施加的相位反转信号。附加选通电路的输出通过电路装置连接到主触发器电路，该电路也接收来自从触发器输出电路的信号。在没有反相信号的情况下，电路装置控制来自从触发器电路的主触发器电路，并且主触发器电路借助定时脉冲以常规方式控制从触发器电路。相位反转信号可以在定时电路的宽范围的定时间隔上被施加，只要当从触发器的正常输出信号为“正反馈信号”时反相信号与正常定时信号的定时脉冲中的至少一部分重叠， 0“，主触发电路的正常输出信号也为”0“。

17. 发明授权

US4092667A Automatic chrominance control and color killer circuits 失效
标题翻译：自动色彩控制和彩色杀手电路
公开(公告)号：US4092667A
公开(公告)日：1978-05-30
申请号：US787155
申请日：1977-04-13
申请人： Susumu Akazawa , Takao Tsuchiya , Kyoichi Murakami , Takashi Okada
发明人： Susumu Akazawa , Takao Tsuchiya , Kyoichi Murakami , Takashi Okada
IPC分类号： H04N9/71 , H04N9/49
CPC分类号： H04N9/71
摘要： An automatic chrominance control and color killer circuit for use in a color television receiver having a gain controllable chrominance amplifier for selectively amplifying chrominance signals and a color burst signal transmitted with a composite television signal during a color television transmission. The circuit further has a burst level detector connected to the chrominance amplifier, a control circuit including a time constant circuit connected to the burst level detector for deriving a control signal, which is supplied to the chrominance amplifier for controlling the gain thereof in response to the level of the control signal during the presence of the burst signal and for activating and inactivating the chrominance amplifier when the level of the control signal goes over and below a predetermined level, and a circuit connected between the burst level detector and the time constant circuit for shortening the time constant of the latter when the level of an output signal of the former goes below a predetermined level.

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