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1. 发明授权

US06472952B1 Antenna duplexer circuit with a phase shifter on the receive side 失效
标题翻译：在接收侧具有移相器的天线双工器电路
公开(公告)号：US06472952B1
公开(公告)日：2002-10-29
申请号：US09600071
申请日：2000-09-05
申请人： Yukio Sakai , Kazuhiro Yahata , Michiaki Tsuneoka
发明人： Yukio Sakai , Kazuhiro Yahata , Michiaki Tsuneoka
IPC分类号： H01P1213
CPC分类号： H04B1/525 , H04B1/18 , H04B1/50
摘要： A high frequency wireless circuit apparatus is formed by connecting a phase shifter between an antenna duplexer and a low noise amplifier, so that the impedance of the receiving terminal of the antenna duplexer at a transmission frequency and the input impedance of the low noise amplifier may not be matched in complex conjugates of each other. Therefore it prevents the transmission output passing through the receiving terminal of the antenna duplexer and the interference signal entered through the antenna from making the cross modulation in the low noise amplifier. Thus it improves the reception sensitivity and immunity to interference signals of the high frequency wireless circuit apparatus at the same time.
摘要翻译：通过在天线双工器和低噪声放大器之间连接移相器来形成高频无线电路装置，使得天线双工器的接收端在传输频率下的阻抗和低噪声放大器的输入阻抗不可能在彼此的复合缀合物中匹配。因此，防止通过天线双工器的接收端的发送输出和通过天线进入的干扰信号在低噪声放大器中进行交叉调制。因此，能够同时提高高频无线电路装置的干扰信号的接收灵敏度和抗干扰能力。

2. 发明授权

US5210504A Semiconductor device for TV tuner and TV tuner using the same 失效
标题翻译：用于电视调谐器和电视调谐器的半导体器件
公开(公告)号：US5210504A
公开(公告)日：1993-05-11
申请号：US851900
申请日：1992-03-16
申请人： Hideki Yagita , Tadayoshi Nakatsuka , Taketo Kunihisa , Michiaki Tsuneoka , Yukio Sakai , Kazuhiro Yahata
发明人： Hideki Yagita , Tadayoshi Nakatsuka , Taketo Kunihisa , Michiaki Tsuneoka , Yukio Sakai , Kazuhiro Yahata
IPC分类号： H03D7/14 , H03F3/45 , H03G1/00 , H03G3/10 , H03G3/30
CPC分类号： H03G1/007
摘要： A semiconductor device for a tuner capable of simultaneously satisfying a low noise factor, low third order distortion characteristics and low power consumption, and a tuner using this semiconductor device for a tuner and capable of reducing the size and eliminating labor during assembly. The semiconductor device is a variable gain amplification circuit comprising a gate grounded circuit using a transistor, and a differential amplification circuit including transistors and constant current sources. Transistors are used as variable resistance devices, and the gain of the gate grounded circuit can be varied by changing the gate voltage of a transistor. The gain of the differential amplification circuit can be varied by changing the gate voltage of another transistor. The overall gain of the circuit can be varied within a necessary range by simultaneously operating these gain controls, and the third order distortion can be improved monotonously with the decrease of the gain.

3. 发明授权

US5319318A Gain control circuit and semiconductor device 失效
标题翻译：增益控制电路和半导体器件
公开(公告)号：US5319318A
公开(公告)日：1994-06-07
申请号：US931711
申请日：1992-08-18
申请人： Taketo Kunihisa , Yukio Sakai , Kazuhiro Yahata , Tadayoshi Nakatsuka , Hideki Yagita
发明人： Taketo Kunihisa , Yukio Sakai , Kazuhiro Yahata , Tadayoshi Nakatsuka , Hideki Yagita
IPC分类号： H01L21/8234 , H01L27/06 , H03F3/347 , H03G1/00 , H03G3/10 , H03G3/12
CPC分类号： H03F3/347 , H03G1/007
摘要： A gain control circuit includes a first FET for serving as an active load, a second FET serving as an amplifier, and a third FET for serving as a current source. The first, second, and third FETs have substantially the same characteristics and are mutually connected in a series. The gain control circuit further includes a fourth FET for serving as a variable active load connected in parallel with the third FET and a capacitor connected between the third and fourth FETs. The fourth FET is also connected to a gain control terminal. The gain of the second FET is controlled by the voltage applied to the gate of the fourth FET through said gain control line.
摘要翻译：增益控制电路包括用作有源负载的第一FET，用作放大器的第二FET和用作电流源的第三FET。第一，第二和第三FET具有基本上相同的特性并且串联地相互连接。增益控制电路还包括用作与第三FET并联连接的可变有源负载的第四FET和连接在第三和第四FET之间的电容器。第四FET也连接到增益控制端子。第二FET的增益由通过所述增益控制线施加到第四FET的栅极的电压来控制。

4. 发明授权

US08947166B2 Radio frequency power amplifier 有权
标题翻译：射频功率放大器
公开(公告)号：US08947166B2
公开(公告)日：2015-02-03
申请号：US13824425
申请日：2012-05-22
申请人： Takashi Uno , Hikaru Ikeda , Kazuhiro Yahata , Motoyoshi Iwata , Hiroshi Naitou , Tomohide Kamiyama
发明人： Takashi Uno , Hikaru Ikeda , Kazuhiro Yahata , Motoyoshi Iwata , Hiroshi Naitou , Tomohide Kamiyama
IPC分类号： H03F3/191 , H03F3/193 , H03F1/02 , H03F1/56 , H03F3/60
CPC分类号： H03F3/193 , H03F1/0205 , H03F1/565 , H03F3/601 , H03F2200/387 , H03F2200/423
摘要： A radio frequency power amplifier includes: an amplifying element which amplifies an input signal and outputs the signal from an output terminal; and an output load circuit which includes a first resonant circuit and a second resonant circuit that are connected to the output terminal. The first resonant circuit has a resonance frequency higher than the frequency of the second harmonic of the input signal, and the second resonant circuit has a resonance frequency lower than the frequency of the third harmonic of the input signal. The output load circuit has such an impedance looking from the output terminal that a phase of a reflection coefficient at the second harmonic of the input signal is greater than 180 degrees and less than 360 degrees, and a phase of a reflection coefficient at the third harmonic of the input signal is greater than 0 degrees and less than 180 degrees.
摘要翻译：射频功率放大器包括：放大元件，其对输入信号进行放大并输出来自输出端子的信号; 以及输出负载电路，其包括连接到输出端子的第一谐振电路和第二谐振电路。第一谐振电路的谐振频率高于输入信号的二次谐波的频率，第二谐振电路的谐振频率低于输入信号的三次谐波的频率。输出负载电路具有从输出端看的阻抗，输入信号的二次谐波的反射系数的相位大于180度且小于360度，并且在三次谐波处的反射系数的相位的输入信号大于0度且小于180度。

5. 发明授权

US08558622B2 Radio frequency power amplifier 有权
标题翻译：射频功率放大器
公开(公告)号：US08558622B2
公开(公告)日：2013-10-15
申请号：US13379450
申请日：2010-07-09
申请人： Takashi Uno , Kazuhiro Yahata , Toshio Ishizaki
发明人： Takashi Uno , Kazuhiro Yahata , Toshio Ishizaki
IPC分类号： H03F3/191
CPC分类号： H03F3/245 , H03F1/32 , H03F1/3205 , H03F1/56 , H03F3/189 , H03F3/193 , H03F3/195 , H03F2200/108 , H03F2200/15 , H03F2200/18 , H03F2200/222 , H03F2200/387 , H03F2200/391 , H03F2200/423 , H03F2203/7215
摘要： A radio frequency power amplifier includes a transistor and amplifies a radio frequency signal of a first frequency; an input matching circuit connected to an input terminal of the transistor; and an output matching circuit connected to an output terminal of the transistor. A reactance control circuit includes one end connected to the output terminal of the transistor, and the other end connected to an input terminal of an output matching circuit and a bias terminal. The reactance control circuit has a reactance which resonates at a second frequency with a parasitic capacitance of the transistor at the output terminal of the transistor, and the second frequency is identical or close to the first frequency.
摘要翻译：射频功率放大器包括晶体管，并放大第一频率的射频信号; 连接到晶体管的输入端的输入匹配电路; 以及连接到晶体管的输出端子的输出匹配电路。电抗控制电路包括连接到晶体管的输出端的一端，另一端连接到输出匹配电路和偏置端的输入端。电抗控制电路具有以第二频率与晶体管的输出端子处的晶体管的寄生电容谐振的电抗，第二频率与第一频率相同或接近。

6. 发明申请

US20130176079A1 RADIO FREQUENCY POWER AMPLIFIER 有权
标题翻译：无线电频率放大器
公开(公告)号：US20130176079A1
公开(公告)日：2013-07-11
申请号：US13824425
申请日：2012-05-22
申请人： Takashi Uno , Hikaru IKeda , Kazuhiro Yahata , Motoyoshi Iwata , Hiroshi Naitou , Tomohide Kamiyama
发明人： Takashi Uno , Hikaru IKeda , Kazuhiro Yahata , Motoyoshi Iwata , Hiroshi Naitou , Tomohide Kamiyama
IPC分类号： H03F3/193
CPC分类号： H03F3/193 , H03F1/0205 , H03F1/565 , H03F3/601 , H03F2200/387 , H03F2200/423
摘要： A radio frequency power amplifier includes: an amplifying element which amplifies an input signal and outputs the signal from an output terminal; and an output load circuit which includes a first resonant circuit and a second resonant circuit that are connected to the output terminal. The first resonant circuit has a resonance frequency higher than the frequency of the second harmonic of the input signal, and the second resonant circuit has a resonance frequency lower than the frequency of the third harmonic of the input signal. The output load circuit has such an impedance looking from the output terminal that a phase of a reflection coefficient at the second harmonic of the input signal is greater than 180 degrees and less than 360 degrees, and a phase of a reflection coefficient at the third harmonic of the input signal is greater than 0 degrees and less than 180 degrees.
摘要翻译：射频功率放大器包括：放大元件，其对输入信号进行放大并输出来自输出端子的信号; 以及输出负载电路，其包括连接到输出端子的第一谐振电路和第二谐振电路。第一谐振电路的谐振频率高于输入信号的二次谐波的频率，第二谐振电路的谐振频率低于输入信号的三次谐波的频率。输出负载电路具有从输出端看的阻抗，输入信号的二次谐波的反射系数的相位大于180度且小于360度，并且在三次谐波处的反射系数的相位的输入信号大于0度且小于180度。

7. 发明申请

US20120307099A1 IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD AND PROGRAM 有权
标题翻译：图像处理设备，图像处理方法和程序
公开(公告)号：US20120307099A1
公开(公告)日：2012-12-06
申请号：US13479978
申请日：2012-05-24
申请人： Kazuhiro Yahata
发明人： Kazuhiro Yahata
IPC分类号： H04N5/228
CPC分类号： H04N5/3696 , G06T1/0007 , G06T5/50 , G06T2200/21 , G06T2207/10052 , H04N13/232 , H04N2013/0088
摘要： When the super-resolution processing is performed, loss of signal occurs due to the aperture effect, and adversely affects the image quality. In order to improve the image quality by suppressing the occurrence of loss of signal, a pixel aperture characteristic provided for some of image capturing units differs from a pixel aperture characteristic provided for the other image capturing units, and a plurality of digital images are captured by these image capturing units and are synthesized thereafter.
摘要翻译：当执行超分辨率处理时，由于孔径效应而发生信号损失，并且对图像质量产生不利影响。为了通过抑制信号损失的发生来提高图像质量，为某些图像捕获单元提供的像素孔径特性不同于为其它图像捕获单元提供的像素孔径特性，并且多个数字图像被捕获这些图像捕获单元并且之后被合成。

8. 发明申请

US20080266012A1 METHOD FOR CONTROLLING HIGH-FREQUENCY RADIATOR 审中-公开
标题翻译：控制高频散热器的方法
公开(公告)号：US20080266012A1
公开(公告)日：2008-10-30
申请号：US12109804
申请日：2008-04-25
申请人： Kazuhiro Yahata , Takashi Uno , Hiroyuki Sakai , Tsuyoshi Tanaka , Daisuke Ueda
发明人： Kazuhiro Yahata , Takashi Uno , Hiroyuki Sakai , Tsuyoshi Tanaka , Daisuke Ueda
IPC分类号： H03L7/099
CPC分类号： H03H7/40 , H05B6/686 , H05B6/705 , Y02B40/146
摘要： A method for controlling a high-frequency radiator includes the steps of: (a) applying a high-frequency radiation through the solid-state oscillator and the antenna; (b) sensing part of the high-frequency radiation returned from the antenna to the solid-state oscillator; (c) adjusting radiation/propagation conditions for the high-frequency radiation on the basis of the sensed results in the step (b), the high-frequency radiation propagating from the solid-state oscillator to the antenna; and (d) after the step (c), applying the high-frequency radiation through the solid-state oscillator and the antenna to a target object. In the step (c), the oscillation frequency of the solid-state oscillator, the power of the high-frequency radiation applied by the solid-state oscillator, the power supply voltage supplied to the solid-state oscillator, the impedance match between the output impedance of the solid-state oscillator and the impedance of the antenna, or any other condition is changed.
摘要翻译：一种用于控制高频辐射器的方法包括以下步骤：（a）通过固态振荡器和天线施加高频辐射; （b）感测从天线返回到固态振荡器的一部分高频辐射; （c）基于步骤（b）中检测到的结果，调整从固态振荡器传播到天线的高频辐射来调整高频辐射的辐射/传播条件; 和（d）在步骤（c）之后，将高频辐射通过固态振荡器和天线施加到目标对象。在步骤（c）中，固态振荡器的振荡频率，由固态振荡器施加的高频辐射的功率，提供给固态振荡器的电源电压，固体振荡器的输出阻抗和天线的阻抗，或任何其他条件改变。

9. 发明申请

US20070279155A1 Film bulk acoustic resonator, filter, and fabrication method thereof 失效
标题翻译：薄膜体声波谐振器，滤波器及其制造方法
公开(公告)号：US20070279155A1
公开(公告)日：2007-12-06
申请号：US11806123
申请日：2007-05-30
申请人： Takashi Uno , Naohiro Tsurumi , Kazuhiro Yahata , Hiroyuki Sakai
发明人： Takashi Uno , Naohiro Tsurumi , Kazuhiro Yahata , Hiroyuki Sakai
IPC分类号： H03H9/56
CPC分类号： H03H9/175 , H03H3/02 , H03H9/589 , H03H2003/025
摘要： A film bulk acoustic resonator includes a substrate; an acoustic reflector portion formed on the substrate; and an acoustic resonator portion including a lower electrode, a piezoelectric film, and an upper electrode which are sequentially stacked on the acoustic reflector portion, An uppermost layer of the acoustic reflector portion which is in contact with the acoustic resonator portion has a root-mean-square roughness of approximately 1 nm or less.
摘要翻译：薄膜体声波谐振器包括基板; 形成在基板上的声反射器部分; 以及包括依次堆叠在声反射器部分上的下电极，压电膜和上电极的声谐振器部分。与声共振器部分接触的声反射器部分的最上层具有根平均平方粗糙度约为1nm以下。

10. 发明申请

US20110254927A1 IMAGE PROCESSING APPARATUS AND METHOD 有权
标题翻译：图像处理装置和方法
公开(公告)号：US20110254927A1
公开(公告)日：2011-10-20
申请号：US13086261
申请日：2011-04-13
申请人： Kazuhiro Yahata , Takuya Kotani
发明人： Kazuhiro Yahata , Takuya Kotani
IPC分类号： H04N13/02 , G06K9/00
CPC分类号： H04N13/111 , G06T15/20 , H04N13/178 , H04N13/189 , H04N13/239 , H04N13/243 , H04N13/296 , H04N13/398
摘要： An image processing apparatus executes a distortion correction on coordinates of a target pixel in a virtual viewpoint image based on distortion characteristics of a virtual camera and calculates coordinates in the virtual viewpoint image after the distortion correction. The image process apparatus calculates ideal coordinates in a captured image from the coordinates in the virtual viewpoint image after the distortion correction and calculates real coordinates in the captured image from the ideal coordinates in the captured image based on distortion characteristics of an imaging unit. The image process apparatus calculates a pixel value corresponding to the real coordinates from image data of the virtual viewpoint image and corrects the pixel value corresponding to the real coordinates based on ambient light amount decrease characteristics of the imaging unit and ambient light amount decrease characteristics of the virtual camera.
摘要翻译：图像处理装置基于虚拟摄像机的失真特性对虚拟视点图像中的目标像素的坐标进行失真校正，并计算失真校正后的虚拟视点图像中的坐标。图像处理装置根据失真校正后的虚拟视点图像的坐标来计算拍摄图像中的理想坐标，并根据摄像单元的失真特性，根据拍摄图像中的理想坐标，计算拍摄图像中的实际坐标。图像处理装置根据虚拟视点图像的图像数据计算与实际坐标相对应的像素值，并且基于成像单元的环境光量降低特性校正与实际坐标相对应的像素值，并且根据虚拟相机。

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