公开(公告)号：US07248119B2

公开(公告)日：2007-07-24

申请号：US11142801

申请日：2005-06-01

申请人： Masaki Yamamoto

发明人： Masaki Yamamoto

IPC分类号： H03F1/34

CPC分类号： H03F3/19 ,  H03F1/30 ,  H03F1/34 ,  H03F2200/141

摘要： A broadcast transistor includes an amplifier transistor, and a negative feedback circuit connected to the amplifier transistor. A collector bias current in the amplifier transistor is switched to high and low within a range larger than a range of a current exhibiting the minimum noise figure, and the amount of feedback performed by the negative feedback circuit is changed in association with the switching of the collector bias current. When the collector bias current is switched to high, the amount of feedback becomes large; when the collector bias current is switched to low, the amount of feedback becomes small.

摘要翻译： 广播晶体管包括放大器晶体管和连接到放大器晶体管的负反馈电路。 放大器晶体管中的集电极偏置电流在大于呈现最小噪声系数的电流的范围的范围内被切换为高和低，并且由负反馈电路执行的反馈量与切换 集电极偏置电流。 当集电极偏置电流切换为高电平时，反馈量变大; 当集电极偏置电流切换为低电平时，反馈量变小。

公开(公告)号：US07233369B2

公开(公告)日：2007-06-19

申请号：US10924164

申请日：2004-08-23

申请人： Masaki Yamamoto

发明人： Masaki Yamamoto

IPC分类号： H04N5/50

CPC分类号： H04B1/406 ,  H04B1/28

摘要： The intermediate frequency signal based on the analog television signal and the intermediate frequency signal based on the digital television signal can be supplied to the intermediate frequency circuit without being distorted and with characteristics needed to the transfer of the analog television signal and the digital television signal. The television tuner contains a first SAW filter 29a to which a first intermediate frequency signal is input, a second SAW filter 30a to which a second intermediate frequency signal is input, a distributor 25 inserted between the intermediate frequency amplifier 22 and the first and second SAW filters 29a and 30a. The input port of the distributor 25 is connected to the ground by a reactance element 26, and the reactance value of the reactance element 25 is switched so as to have a conjugation relationship with the reactance component of the respective input impedance of the first and second SAW filters 29a and 30a.

摘要翻译： 可以将基于模拟电视信号的中频信号和基于数字电视信号的中频信号提供给中频电路，而不会失真并具有传输模拟电视信号和数字电视信号所需的特性。 电视调谐器包括输入第一中频信号的第一SAW滤波器29a，输入第二中频信号的第二SAW滤波器30a，插入在中频放大器22与第一中频信号之间的分配器25， 第二SAW滤波器29a和30a。 分配器25的输入端口由电抗元件26连接到地，并且电抗元件25的电抗值被切换成具有与第一和第二电阻元件25的相应输入阻抗的电抗分量的共轭关系 SAW滤波器29a和30a。

公开(公告)号：US20070118252A1

公开(公告)日：2007-05-24

申请号：US11654569

申请日：2007-01-18

申请人： Yasunao Okazaki ,  Masaki Yamamoto ,  Yuji Adachi ,  Katsuhiko Asai

发明人： Yasunao Okazaki ,  Masaki Yamamoto ,  Yuji Adachi ,  Katsuhiko Asai

IPC分类号： G06F19/00

CPC分类号： F15B11/20 ,  B25J9/142 ,  F15B9/09 ,  F15B15/103

摘要： An internal pressure of a hydropneumatic drive actuator is measured by a pressure measurement device, a displacement amount of a movable mechanism is measured, a desired value and a measurement value of the displacement are inputted so that a position error is compensated by a position error compensation device, a desired value of a pressure difference of the actuator to which antagonistic driving is performed by the desired value is calculated by a desired pressure difference calculation device, outputs from the position error compensation device, the desired pressure difference calculation device, and the pressure measurement device are inputted, and a pressure difference error is compensated by pressure difference error compensation device.

公开(公告)号：US20060232350A1

公开(公告)日：2006-10-19

申请号：US11385169

申请日：2006-03-20

申请人： Masaki Yamamoto

发明人： Masaki Yamamoto

IPC分类号： H03L7/099

CPC分类号： H03B5/04 ,  H03B5/1209 ,  H03B5/1221 ,  H03B5/1231 ,  H03B5/1243

摘要： An oscillator circuit includes: oscillating transistors; a resonance circuit that includes varactor diodes each having a cathode to which a control voltage for controlling an oscillation frequency is applied and that is coupled between a collector and a base of each of the oscillating transistors; and a bias power supply that applies the bias voltages to the anodes of the varactor diodes. The bias voltages are given negative temperature characteristics, and a variation in the oscillation frequency caused by a change in the capacitance values of the varactor diodes due to a temperature variation is corrected by varying the bias voltages corresponding to the temperature variation.

摘要翻译： 振荡电路包括：振荡晶体管; 谐振电路，其包括各自具有用于控制振荡频率的控制电压的阴极并且耦合在每个所述振荡晶体管的集电极和基极之间的变容二极管; 以及将偏置电压施加到变容二极管的阳极的偏置电源。 给出偏置电压为负温度特性，并且通过改变与温度变化相对应的偏置电压来校正由于温度变化引起的变容二极管的电容值变化引起的振荡频率的变化。

公开(公告)号：US20060181371A1

公开(公告)日：2006-08-17

申请号：US11349713

申请日：2006-02-08

申请人： Masaki Yamamoto

发明人： Masaki Yamamoto

IPC分类号： H03J3/00

CPC分类号： H04N5/50 ,  H04N5/64 ,  H05K1/0243 ,  H05K1/141

摘要： A television receiving tuner has a multilayer wiring board that has a ground layer provided inside and outside, a tuner unit that has a semiconductor for a high frequency mounted on a bottom surface (a surface facing a mother board) of the multilayer wiring board to form a circuit, a demodulating unit that has a semiconductor for an intermediate frequency mounted on a top surface of the multilayer wiring board to form a circuit, a metal shield plate around the demodulating unit on the top surface and of terminals arranged over an outer circumference of the bottom surface. The shield plate has the same height as that of the demodulating unit. In the shield plate, rib-shaped convex portions are formed through concave groove portions, and the concave groove portions are soldered to the ground layer on the multilayer wiring board.

摘要翻译： 电视接收调谐器具有内部和外部设置有接地层的多层布线板，具有安装在多层布线板的底面（面对母板的表面）上的高频半导体的调谐器单元，以形成 电路，解调单元，其具有安装在多层布线板的顶表面上以形成电路的中频半导体，在顶表面上的解调单元周围的金属屏蔽板和布置在多层布线板的外周上的端子 底面。 屏蔽板具有与解调单元相同的高度。 在屏蔽板中，通过凹槽部形成肋状的凸部，将凹槽部焊接到多层布线基板上的接地层。

公开(公告)号：US20060099922A1

公开(公告)日：2006-05-11

申请号：US11271244

申请日：2005-11-08

申请人： Masaki Yamamoto ,  Masaaki Endo

发明人： Masaki Yamamoto ,  Masaaki Endo

IPC分类号： H04B1/06 ,  H04B7/00

CPC分类号： H03G1/0023

摘要： A variable gain amplifying circuit includes a gate-grounded amplifying FET and a collector-grounded amplifying transistor. A gate voltage of the FET and a base voltage of the transistor are adjusted by a supplied AGC voltage. When an input RF signal has small amplitude, the gate voltage is increased by a high AGC voltage so as to increase a main current of the FET, thereby increasing a signal gain of the FET. When the input RF signal has large or medium amplitude, the gate voltage is decreased by a low AGC voltage so as to decrease a main current of the FET, thereby decreasing the signal gain of the FET.

摘要翻译： 可变增益放大电路包括栅极接地放大FET和集电极接地放大晶体管。 通过提供的AGC电压来调节FET的栅极电压和晶体管的基极电压。 当输入RF信号具有小幅度时，栅极电压增加高AGC电压，从而增加FET的主电流，从而增加FET的信号增益。 当输入RF信号具有大幅度或中等幅度时，栅极电压降低了低AGC电压，从而降低了FET的主电流，从而降低了FET的信号增益。

公开(公告)号：US20060099920A1

公开(公告)日：2006-05-11

申请号：US11286095

申请日：2005-11-10

申请人： Masaki Yamamoto

发明人： Masaki Yamamoto

IPC分类号： H04B1/18

CPC分类号： H04N5/4446 ,  H03J3/06 ,  H04B1/28

摘要： An intermediate frequency circuit includes an intermediate frequency tuning circuit which resonates parallel to an intermediate frequency signal, a N−1 channel trap circuit connected to the output of the intermediate frequency tuning circuit, for removing voice signal components of lower neighboring channels, an intermediate frequency amplifier connected to the output of the N−1 channel trap circuit, for amplifying the intermediate frequency signal, and an intermediate frequency signal resonance circuit connected to the output of the intermediate frequency amplifier, wherein all the components are formed on a circuit board. In this case, the coupling state of the components connected between the input and output of the intermediate frequency amplifier on the circuit board is selected, and a picture portion in a frequency characteristic of the intermediate frequency circuit is set to a peak.

摘要翻译： 中频电路包括与中频信号并联谐振的中频调谐电路，连接到中频调谐电路的输出的N-1通道陷波电路，用于去除下相邻通道的语音信号分量，中频 连接到N-1通道陷波电路的输出端的放大器，用于放大中频信号，以及连接到中频放大器的输出的中频信号谐振电路，其中所有的部件形成在电路板上。 在这种情况下，选择连接在电路板上的中频放大器的输入和输出之间的组件的耦合状态，并且将中频电路的频率特性中的图像部分设置为峰值。

公开(公告)号：US07019790B2

公开(公告)日：2006-03-28

申请号：US10341695

申请日：2003-01-13

申请人： Masaki Yamamoto

发明人： Masaki Yamamoto

IPC分类号： H04N5/44 ,  H04N5/50 ,  H03J5/00 ,  H04B1/16 ,  H04B1/18 ,  H04B1/26

CPC分类号： H03J5/244

摘要： An integrated tuner circuit includes a first terminal to which a UHF TV signal is input via a UHF amplifier. The amplifier is switched to an operating state when a UHF TV signal is received. A switching-voltage generation circuit includes a first switching circuit for generating a switching voltage used to switch the operating state of a UHF high-frequency amplifying circuit. The switching voltage of the first switching circuit is output to the first terminal

摘要翻译： 集成调谐器电路包括经由UHF放大器输入UHF TV信号的第一端子。 当接收到UHF电视信号时，放大器切换到工作状态。 开关电压产生电路包括用于产生用于切换UHF高频放大电路的工作状态的开关电压的第一开关电路。 第一开关电路的开关电压被输出到第一端子

公开(公告)号：US20060028974A1

公开(公告)日：2006-02-09

申请号：US11197661

申请日：2005-08-03

申请人： Go Mori ,  Masaki Yamamoto ,  Hideharu Tajima ,  Nobuyuki Takamori

发明人： Go Mori ,  Masaki Yamamoto ,  Hideharu Tajima ,  Nobuyuki Takamori

IPC分类号： G11B7/24

CPC分类号： G11B7/254 ,  G11B7/252 ,  G11B7/2534 ,  G11B7/2585

摘要： An optical information recording medium of the present invention, a reproduction method using the optical information recording medium, and an optical information processing device using the optical information recording medium, each of which optically reproduces recorded information by irradiating a light beam, include: a substrate on which a bumpy pit and/or groove corresponding to the recorded information or a recording layer is formed; and a temperature responsive layer whose optical property (transmissivity) in a wavelength of the light beam varies in response to temperature rise caused by irradiation of the light beam. The optical information recording medium can surely reproduce information, which has been recorded in a high density manner, with high accuracy.

摘要翻译： 本发明的光学信息记录介质，使用光学信息记录介质的再现方法和使用光学信息记录介质的光学信息处理设备，每个光学信息记录介质通过照射光束来光学地再现记录的信息，包括：基板 在其上形成与所记录的信息相对应的凹凸凹坑和/或凹槽或记录层; 以及其光束的波长中的光学特性（透射率）响应于由光束的照射引起的温度升高而变化的温度响应层。 光信息记录介质可以高精度地可靠地再现以高密度记录的信息。

公开(公告)号：US20050270429A1

公开(公告)日：2005-12-08

申请号：US11142431

申请日：2005-06-01

申请人： Masaki Yamamoto

发明人： Masaki Yamamoto

IPC分类号： H03B1/00 ,  H03J3/32 ,  H04B1/18 ,  H04B1/26 ,  H04N5/44 ,  H04N5/50

CPC分类号： H03J3/32 ,  H03B2201/0208

摘要： First varactor diodes for changing tuning frequency are provided at tuning circuits, a second varactor diode for changing an oscillating frequency is provided at an oscillator, tuning voltages between both ends of the first varactor diodes become equal to the tuning voltage between both ends of the second varactor diode when a television tuner receives a television signal, and the tuning voltages between both ends of the first varactor diodes become lower than the tuning voltage between both ends of the second varactor diode when the television tuner receives a FM broadcasting signal.

摘要翻译： 在调谐电路中提供用于改变调谐频率的第一变容二极管，在振荡器处提供用于改变振荡频率的第二变容二极管，第一变容二极管二极管两端之间的调谐电压等于第二变容二极管两端之间的调谐电压 当电视调谐器接收到电视信号时，第一变容二极管的两端之间的调谐电压变得低于第二变容二极管的两端之间的调谐电压，当电视调谐器接收到FM广播信号时，电容调谐器接收到电视信号。