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1. 发明授权

US6148137A Video tape reproducing apparatus capable of preventing influence of noise-bar 失效
标题翻译：能够防止噪声条影响的录像带再生装置
公开(公告)号：US6148137A
公开(公告)日：2000-11-14
申请号：US821301
申请日：1997-03-20
申请人： Takahiro Kusano , Hideyuki Hagino
发明人： Takahiro Kusano , Hideyuki Hagino
IPC分类号： H04N5/93 , G11B20/06 , H04N5/783 , H04N5/94 , H04N9/83 , H04N9/882
CPC分类号： H04N9/882 , H04N5/783 , H04N9/83
摘要： A noise-bar period detection circuit detects a noise bar period in response to a low-frequency carrier wave FM signal contained in a signal reproduced by a video head when a video tape is reproduced in a special mode so as to output a noise-bar detection signal. A reproduced-signal processing circuit including a clamp circuit, an AGC circuit and the like maintains normal voltage immediately before the noise bar period in response to the noise-bar detection signal output from the noise-bar period detection circuit. Therefore, restoration to a normal state can be performed immediately after the noise bar period.
摘要翻译：噪声条周期检测电路响应于当以特殊模式再现录像带时由视频头再现的信号中包含的低频载波FM信号来检测噪声条周期，以便输出噪声条检测信号。包括钳位电路，AGC电路等的再现信号处理电路响应于从噪声条周期检测电路输出的噪声条检测信号，在噪声条周期之前保持正常电压。因此，可以在噪声条周期之后立即执行恢复到正常状态。

2. 发明授权

US4851718A Active filter type signal adjusting circuit 失效
标题翻译：有源滤波器类型信号调节电路
公开(公告)号：US4851718A
公开(公告)日：1989-07-25
申请号：US239656
申请日：1988-09-02
申请人： Hideyuki Hagino , Takahiro Kusano
发明人： Hideyuki Hagino , Takahiro Kusano
IPC分类号： H03H11/04 , H03H11/12
CPC分类号： H03H11/0472 , H03H2210/017
摘要： A first operational amplifier differentially operates a signal to be adjusted input by an input unit and an adjusted signal output by an output unit. A second operational amplifier differentially operates a first output from the first operational amplifier and the adjusted signal. A buffer supplies a second output from the second operational amplifier to the output unit as the adjusted signal. A first adder obtains a sum component of a first signal obtained by multiplying a first variable m with the signal to be adjusted and a second signal obtained by multiplying a second variable 1-n with the adjusted signal. A first capacitor superposes the sum component of the first and second signals on the first output to supply a superposed signal to the second operational amplifier. A second adder obtains the signal to be adjusted or a component obtained by multiplying the first variable m with the signal to be adjusted as a third signal. A second capacitor superposes the third signal on the second output to supply a superposed signal to the buffer. The first and second variables m and 1-n are selected as desirable values in an adjusting mode and are respectively set to be m=n=1 (where 0.ltoreq.n and m.ltoreq.1) in a non-adjusting mode.
摘要翻译：第一运算放大器差分地操作由输入单元输入的信号和由输出单元输出的经调整的信号。第二运算放大器差分地操作来自第一运算放大器的第一输出和经调整的信号。缓冲器将第二运算放大器的第二输出提供给输出单元作为调整信号。第一加法器获得通过将第一变量m与要调整的信号相乘而获得的第一信号的和分量和通过将第二变量1-n与调整后的信号相乘而获得的第二信号。第一电容器将第一和第二信号的和分量叠加在第一输出端上，以向第二运算放大器提供叠加信号。第二加法器获得要调整的信号或通过将第一变量m与要调整的信号相乘而获得的分量作为第三信号。第二电容器将第三信号叠加在第二输出端上，以向缓冲器提供叠加的信号。第一和第二变量m和1-n在调整模式中被选择为期望值，并且在非调整模式中分别被设置为m = n = 1（其中0 <= n和m

3. 发明授权

US4841179A Phase equalizing active filter 失效
标题翻译：相位均衡有源滤波器
公开(公告)号：US4841179A
公开(公告)日：1989-06-20
申请号：US136968
申请日：1987-12-23
申请人： Hideyuki Hagino , Takahiro Kusano
发明人： Hideyuki Hagino , Takahiro Kusano
IPC分类号： H03H11/16 , H03B11/00 , H03G5/16 , H03H11/00 , H03H11/12 , H03H11/18 , H03H11/54
CPC分类号： H03G5/165 , H03H11/1217
摘要： A first operational amplifier (OP AMP) is connected at the positive input terminal to a signal input terminal. The positive output terminal of the first OP AMP is connected to a ground through a first capacitor, and to the positive input terminal of a second OP AMP. The positive output terminal of the second OP AMP is connected to positive input terminal of the first OP AMP via a second capacitor, and to the input terminal of a buffer. The output terminal of the buffer is connected to the negative input terminal of the first OP AMP, and to the positive input terminal of the first OP AMP via the connected series of the first and second resistors. The connection point of these resistors is connected to the negative input terminal of the second OP AMP. The output terminal of the buffer is connected to a signal output terminal. When the resistances of these resistors are equal, the circuit has a phase equalizer characteristic.
摘要翻译：第一运算放大器（OP AMP）在正输入端连接到信号输入端。第一OP AMP的正输出端子通过第一电容器连接到地，并连接到第二OP AMP的正输入端子。第二OP AMP的正输出端子通过第二电容器连接到第一OP AMP的正输入端子，并连接到缓冲器的输入端子。缓冲器的输出端通过第一和第二电阻的连接系列连接到第一OP AMP的负输入端，并连接到第一OP AMP的正输入端。这些电阻的连接点连接到第二个OP AMP的负极输入端。缓冲器的输出端子连接到信号输出端子。当这些电阻的电阻相等时，电路具有相位均衡器特性。

4. 发明授权

US5122867A Video signal processing circuit having a band pass filter following a delay circuit in a comb filter arrangement 失效
标题翻译：具有随机滤波器布置的延迟电路的带通滤波器的视频信号处理电路
公开(公告)号：US5122867A
公开(公告)日：1992-06-16
申请号：US586219
申请日：1990-09-21
申请人： Hideyuki Hagino
发明人： Hideyuki Hagino
IPC分类号： H04N9/78
CPC分类号： H04N9/78
摘要： This invention discloses a video signal processing circuit of a comb filter arrangement for separating and extracting a luminance signal and a chrominance signal from an input video signal including the luminance signal and the chrominance signal. The input video signal is delayed by a delay circuit by a 1H period, and a 1H-delayed signal is supplied to a band-pass filter. The signal having passed through the band-pass filter is added to the original input video signal by an adding circuit. An output from the adding circuit is supplied to a trap circuit and chrominance signal components are eliminated. Meanwhile, the signal having passed through the band-pass filter is eliminated from the input video signal by a subtracting circuit, and an amplitude of an output from the subtracting circuit is attenuated by an attenuating circuit. A signal corresponding to a period corresponding to an amplitude difference in the chrominance signal between the signal having passed through the band-pass filter and the original input video signal before delay is generated by a switching signal generating circuit. A first switching circuit switches the outputs from the adding circuit and the trap circuit, and a second switching circuit switches the original input video signal and an output from the attenuating circuit.

5. 发明授权

US5119179A Video signal processing circuit for extracting a chroma signal from a luminous signal 失效
标题翻译：用于从荧光信号中提取色谱信号的视频信号处理电路
公开(公告)号：US5119179A
公开(公告)日：1992-06-02
申请号：US582078
申请日：1990-09-14
申请人： Hideyuki Hagino
发明人： Hideyuki Hagino
IPC分类号： H04N9/83 , H04N9/87
CPC分类号： H04N9/83 , H04N9/87
摘要： A video signal processing circuit for reproducing an FM video signal. A video reproduction signal output from a magnetic head is supplied to a low-pass filter, which extracts a chroma signal. The video reproduction signal is also supplied to a chroma signal removing circuit through a high-pass filter of low degree and sharpness. The chroma signal removing circuit removes the chroma signal component. The output of the chroma signal removing circuit is amplitude-limited to a predetermined degree by a limiter, and then supplied to a demodulator which extracts a luminance signal.

6. 发明授权

US08569962B2 LED driver circuit and LED driver system 失效
标题翻译： LED驱动电路和LED驱动系统
公开(公告)号：US08569962B2
公开(公告)日：2013-10-29
申请号：US13233291
申请日：2011-09-15
申请人： Hideyuki Hagino , Masahiro Shimozono , Shinichi Kiyota
发明人： Hideyuki Hagino , Masahiro Shimozono , Shinichi Kiyota
IPC分类号： H05B37/00
CPC分类号： G09G3/3413 , G09G2320/064 , G09G2330/04
摘要： A withstand voltage of the LED driver circuit is set to be lower than an LED power supply voltage of the power supply and be higher than a first voltage value obtained by subtracting a voltage drop across whole of the LEDs connected in series caused by the second constant current from the LED power supply voltage.When raising a luminous intensity of the LEDs, in response to the control signal, the control circuit controls the switch circuit to bring about conduction between the LED drive terminal and the first switch terminal to let the first constant current flow through the LEDs.When lowering the luminous intensity of the LEDs, in response to the control signal, the control circuit controls the switch circuit to bring about conduction between the LED drive terminal and the second switch terminal to let the second constant current flow through the LEDs.
摘要翻译： LED驱动器电路的耐压设定为低于电源的LED电源电压，并且高于通过从第二常数减去串联连接的整个LED的电压降而获得的第一电压值电流从LED电源电压。当提高LED的发光强度时，响应于控制信号，控制电路控制开关电路以使LED驱动端子和第一开关端子之间导通，以使第一恒定电流流过LED。当降低LED的发光强度时，响应于控制信号，控制电路控制开关电路以在LED驱动端子和第二开关端子之间导通，以使第二恒定电流流过LED。

7. 发明授权

US5523798A Circuit for automatically adjusting signal separation in Y/C seperation comb filter 失效
标题翻译： Y / C分离梳状滤波器自动调节信号分离电路
公开(公告)号：US5523798A
公开(公告)日：1996-06-04
申请号：US216418
申请日：1994-03-23
申请人： Hideyuki Hagino , Mitsumo Kawano
发明人： Hideyuki Hagino , Mitsumo Kawano
IPC分类号： H04N9/78 , H04N9/64
CPC分类号： H04N9/78
摘要： For realizing more accurately a signal separation of a luminance signal and a chrominance signal, a signal separation automatic adjusting circuit in a YC separation comb filter includes an amplitude adjusting loop for detecting a level of a color signal component remaining in the separated luminance signal to adjust amplitudes in an image signal and a 1H delayed image signal, a first phase adjusting loop for adjusting phases of the image signal and the 1H delayed image signal which are respectively inputted into an adder, and a second phase adjusting loop for adjusting phases of the image signal and the 1H delayed image signal in the manner of suppressing the color signal remaining in the luminance signal. According to the constitution, it is possible to prevent an intermix of the color signal component into the luminance, thereby obtaining the YC separation automatic adjusting circuit having a high accuracy.
摘要翻译：为了更精确地实现亮度信号和色度信号的信号分离，YC分离梳状滤波器中的信号分离自动调整电路包括用于检测分离的亮度信号中残留的彩色信号分量的电平的幅度调整回路，以调整图像信号和1H延迟图像信号的振幅，用于调整分别输入加法器的图像信号和1H延迟图像信号的相位的第一相位调整回路和用于调整图像的相位的第二相位调整回路信号和1H延迟图像信号，以抑制亮度信号中剩余的彩色信号。根据该结构，可以防止色信号分量的混合成为亮度，从而获得高精度的YC分离自动调整电路。

8. 发明授权

US4571508A Differential switch circuit 失效
标题翻译：差分开关电路
公开(公告)号：US4571508A
公开(公告)日：1986-02-18
申请号：US426759
申请日：1982-09-29
申请人： Takashi Koga , Hideyuki Hagino
发明人： Takashi Koga , Hideyuki Hagino
IPC分类号： H03K17/00 , H03K5/15 , H03K17/30 , H03K17/60 , H03K17/62 , H03K5/153
CPC分类号： H03K5/15073 , H03K17/30 , H03K17/603 , H03K17/6278
摘要： A differential switch circuit having an input circuit being responsive to an input signal for providing switch instructions corresponding to the level of the input signal, a bias circuit coupled to the input circuit for generating bias signals respectively corresponding to the switch instructions, and a differential transistor circuit coupled to the bias circuit for providing a plurality of outputs in accordance with the potential of each of the bias signals. The input circuit includes comparators which respond to three levels of the input signal and provide the switch instructions in a manner so that the switch instructions respectively correspond to the levels of the input signal. The bias circuit includes three bias sources. Each of the bias sources generates one of the bias signals according to the switch instructions. The differential transistor circuit includes a current source and three switch transistors each of which emitter is coupled to the current source, each of which base receives one of the bias signals, and each of which collector provides one of the outputs.
摘要翻译：一种差分开关电路，其具有响应输入信号的输入电路，用于提供与输入信号的电平相对应的开关指令;耦合到输入电路的偏置电路，用于产生分别对应于开关指令的偏置信号;以及差分晶体管耦合到偏置电路的电路，用于根据每个偏置信号的电位提供多个输出。输入电路包括比较器，其对输入信号的三个电平进行响应，并以使得开关指令分别对应于输入信号的电平的方式提供开关指令。偏置电路包括三个偏置源。每个偏置源根据开关指令产生偏置信号之一。差分晶体管电路包括电流源和三个开关晶体管，每个开关晶体管的每个发射极耦合到电流源，其中每一个基极接收偏置信号中的一个，并且其中的每一个收集器提供输出之一。

9. 发明授权

US6118919A Video signal processor 失效
标题翻译：视频信号处理器
公开(公告)号：US6118919A
公开(公告)日：2000-09-12
申请号：US925148
申请日：1997-09-08
申请人： Hideyuki Hagino
发明人： Hideyuki Hagino
IPC分类号： H04N9/83 , H04N9/79
CPC分类号： H04N9/83
摘要： A luminous signal processing system, adapted for use in a home VTR, controls the frequency characteristic of a color signal trapping circuit in accordance with the level of a color signal component. The system widens the band of a luminous signal component, thereby improving the resolution. The system is provided with a circuit for extracting a luminous signal component from a video signal input to the recording system of the VTR, a frequency characteristic variable type color signal trapping circuit used for extracting a low-frequency carrier wave FM signal component and having a trapping frequency that varies in accordance with a control input, a circuit for extracting a color signal component from the video signal input, converting the extracted color signal component into a down-converted color signal, and extracting a down-converted color signal, a color signal level detecting circuit, adapted for the recording system, for detecting the level of a color signal included in the video signal input and supplying a detection output to the color signal trapping circuit as a control input, and an adder circuit for adding an output signal of the color signal trapping circuit and a down-converted color signal.
摘要翻译：适用于家用VTR的发光信号处理系统根据彩色信号分量的电平来控制彩色信号捕获电路的频率特性。该系统扩大了发光信号分量的频带，从而提高了分辨率。该系统设置有用于从输入到VTR的记录系统的视频信号中提取发光信号分量的电路，用于提取低频载波FM信号分量的频率特性可变型彩色信号捕获电路，根据控制输入变化的捕获频率，用于从视频信号输入中提取颜色信号分量的电路，将所提取的颜色信号分量转换为下变频颜色信号，以及提取下变频颜色信号，颜色信号电平检测电路，适用于记录系统，用于检测包括在视频信号输入中的彩色信号的电平，并将检测输出提供给作为控制输入的彩色信号捕获电路;以及加法器电路，用于将输出信号的色信号捕获电路和下变频颜色信号。

10. 发明授权

US5767730A Input switch circuit for switching two video signals 失效
标题翻译：用于切换两个视频信号的输入开关电路
公开(公告)号：US5767730A
公开(公告)日：1998-06-16
申请号：US778738
申请日：1997-01-02
申请人： Hideyuki Hagino
发明人： Hideyuki Hagino
IPC分类号： H03K17/16 , H03F3/45 , H03F3/72 , H03K17/62 , H04N5/265 , H03K17/56
CPC分类号： H03F3/72 , H04N5/265 , H04N5/445
摘要： The collector of the first transistor having the base to which the first signal input is supplied, is connected to the collector of the second transistor having the base to which the second signal input is supplied. The diode-connected third transistor is connected between the emitter of the first transistor and the output node, and the diode-connected fourth transistor is connected between the emitter of the second transistor and the output node. The first current mirror circuit supplies the current flowing in the constant current source to the emitters of the first and third transistors when the fifth transistor is in the ON state. The second current mirror circuit supplies the current flowing in the constant current source to the emitters of the second and fourth transistors when the sixth transistor is in the ON state. The third current mirror circuit sets the current flowing in the output node equal to the current flowing between the first power node and the collectors of the first and second transistors.
摘要翻译：具有提供第一信号输入的基极的第一晶体管的集电极连接到具有提供第二信号输入的基极的第二晶体管的集电极。二极管连接的第三晶体管连接在第一晶体管的发射极和输出节点之间，二极管连接的第四晶体管连接在第二晶体管的发射极和输出节点之间。当第五晶体管处于导通状态时，第一电流镜电路将流过恒流源的电流提供给第一和第三晶体管的发射极。当第六晶体管处于导通状态时，第二电流镜电路将在恒流源中流动的电流提供给第二和第四晶体管的发射极。第三电流镜电路将在输出节点中流动的电流设置为等于在第一功率节点和第一和第二晶体管的集电极之间流动的电流。

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