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1. 发明授权

US08044720B2 Amplification circuit 失效
标题翻译：放大电路
公开(公告)号：US08044720B2
公开(公告)日：2011-10-25
申请号：US12725086
申请日：2010-03-16
申请人： Tsutomu Kunishima , Akira Takayama
发明人： Tsutomu Kunishima , Akira Takayama
IPC分类号： H03F3/45
CPC分类号： H03F3/45197 , H03F3/45686 , H03F2203/45492
摘要： An amplification circuit includes a semiconductor amplification element, a current feedback circuit that is connected to a terminal close to a ground side of the semiconductor amplification element and can control gain reduction, and a voltage feedback circuit that is connected between an input terminal and an output terminal of the semiconductor amplification element and can control feedback voltage. The feedback voltage of the voltage feedback circuit may be varied according to the gain reduction controlled by the current feedback circuit.
摘要翻译：放大电路包括半导体放大元件，连接到靠近半导体放大元件的接地侧的端子并且可以控制增益减小的电流反馈电路，以及连接在输入端子和输出端之间的电压反馈电路端子可以控制反馈电压。可以根据由电流反馈电路控制的增益减小来改变电压反馈电路的反馈电压。

2. 发明申请

US20100231302A1 AMPLIFICATION CIRCUIT 失效
标题翻译：放大电路
公开(公告)号：US20100231302A1
公开(公告)日：2010-09-16
申请号：US12725086
申请日：2010-03-16
申请人： Tsutomu Kunishima , Akira Takayama
发明人： Tsutomu Kunishima , Akira Takayama
IPC分类号： H03F3/45
CPC分类号： H03F3/45197 , H03F3/45686 , H03F2203/45492
摘要： An amplification circuit includes a semiconductor amplification element, a current feedback circuit that is connected to a terminal close to a ground side of the semiconductor amplification element and can control gain reduction, and a voltage feedback circuit that is connected between an input terminal and an output terminal of the semiconductor amplification element and can control feedback voltage. The feedback voltage of the voltage feedback circuit may be varied according to the gain reduction controlled by the current feedback circuit.
摘要翻译：放大电路包括半导体放大元件，连接到靠近半导体放大元件的接地侧的端子并且可以控制增益减小的电流反馈电路，以及连接在输入端子和输出端之间的电压反馈电路端子可以控制反馈电压。可以根据由电流反馈电路控制的增益减小来改变电压反馈电路的反馈电压。

3. 发明授权

US6037999A Tuner for receiving television signal 失效
标题翻译：调谐器接收电视信号
公开(公告)号：US6037999A
公开(公告)日：2000-03-14
申请号：US44204
申请日：1998-03-17
申请人： Tsutomu Kunishima
发明人： Tsutomu Kunishima
IPC分类号： H04B1/26 , H03G3/30 , H04B1/18 , H04B1/06 , H04N5/50 , H04N5/52
CPC分类号： H03G3/3052
摘要： A television signal receiving tuner comprises a variable attenuating circuit for attenuating an inputted television signal and outputting the attenuated signal, a preamplifying circuit for amplifying the attenuated signal outputted from the variable attenuating circuit, an input tuning circuit for tuning the amplified television signal outputted from the preamplifying circuit, and a variable gain amplifying circuit for amplifying the tuned television signal outputted from the input tuning circuit.
摘要翻译：电视信号接收调谐器包括用于衰减输入的电视信号并输出衰减信号的可变衰减电路，用于放大从可变衰减电路输出的衰减信号的前置放大电路，用于调谐从可变衰减电路输出的放大电视信号的输入调谐电路前置放大电路和用于放大从输入调谐电路输出的调谐电视信号的可变增益放大电路。

4. 发明授权

US07158192B2 Television tuner in which influence from analog signals is suppressed when receiving digital signals 失效
标题翻译：在接收数字信号时抑制模拟信号的影响的电视调谐器
公开(公告)号：US07158192B2
公开(公告)日：2007-01-02
申请号：US10617087
申请日：2003-07-10
申请人： Tsutomu Kunishima
发明人： Tsutomu Kunishima
IPC分类号： H04N5/50
CPC分类号： H04N5/4446 , H04N5/52 , H04N21/42638
摘要： A high frequency amplifier for amplifying inputted television signals; a mixer for subjecting the television signals which have been amplified to frequency conversion into intermediate frequency signals; a SAW filter for selecting, out of the intermediate frequency signals, intra-range intermediate frequency signals emerging in a range within a prescribed intermediate frequency band; and an intermediate frequency amplifier for amplifying the intra-range intermediate frequency signals are provided, and wide band detecting means for detecting the intermediate frequency signals inputted to the SAW filter and generating a first AGC voltage is provided to control a gain of the high frequency amplifier with the first AGC voltage.
摘要翻译：一种用于放大输入电视信号的高频放大器; 混频器，用于使被放大的电视信号经频率转换成中频信号; 用于从所述中频信号中选择出现在规定中频带内的范围内的范围内中频信号的SAW滤波器; 并且提供用于放大范围内中频信号的中频放大器，并且提供用于检测输入到SAW滤波器并产生第一AGC电压的中频信号的宽带检测装置，以控制高频放大器的增益具有第一个AGC电压。

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