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公开(公告)号：USD520499S1
公开(公告)日：2006-05-09
申请号：US29208619
申请日：2004-07-02
申请人： Akihiko Nagatomi
设计人： Akihiko Nagatomi
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公开(公告)号：US5991597A
公开(公告)日：1999-11-23
申请号：US864338
申请日：1997-05-28
申请人： Akihiko Nagatomi , Toshio Fujita , Masami Tanaka
发明人： Akihiko Nagatomi , Toshio Fujita , Masami Tanaka
CPC分类号： H04B1/18
摘要： A converter for a satellite signal receiving antenna, comprising a input terminal for inputting a signal in a frequency band other than the output frequency band of the IF signal converted from the satellite signal, and where the IF signal and signal from the input terminal are mixed by a mixing circuit, and output through a coaxial cable from the IF output terminal.
摘要翻译： 一种用于卫星信号接收天线的转换器，包括用于输入除了从卫星信号转换的IF信号的输出频带之外的频带中的信号的输入端，以及来自输入端的IF信号和信号被混合的输入端 并通过同轴电缆从IF输出端输出。
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公开(公告)号：US4542300A
公开(公告)日：1985-09-17
申请号：US524321
申请日：1983-08-18
申请人： Akihiko Nagatomi
发明人： Akihiko Nagatomi
CPC分类号： H03K17/76 , H01P1/15 , H04B1/18 , H04N7/10 , Y10T307/74
摘要： An improved high frequency signal changeover switch is provided for use especially as a horizontal-vertical selection switch in an artificial satellite broadcast receiving system for the purpose of selectively delivering either vertical or horizontal polarization signals received at its two inputs, respectively, from its single output. This inventive switch has such a significant feature over the prior art switches in that no mismatch occurs among all of these terminals.
摘要翻译： 提供了一种改进的高频信号切换开关，其特别用作人造卫星广播接收系统中的水平垂直选择开关，用于分别从其单个输出端分别输出在其两个输入处接收的垂直或水平极化信号 。 与现有技术的开关相比，本发明的开关具有这样的显着特征，即在所有这些端子之间不发生失配。
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公开(公告)号：USD500753S1
公开(公告)日：2005-01-11
申请号：US29200454
申请日：2004-03-01
申请人： Akihiko Nagatomi
设计人： Akihiko Nagatomi
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公开(公告)号：US4794458A
公开(公告)日：1988-12-27
申请号：US85189
申请日：1987-08-14
申请人： Akihiko Nagatomi
发明人： Akihiko Nagatomi
CPC分类号： H04N5/40
摘要： A modulation device especially suitable for use in a joint TV reception device for tuning the input video and audio signals to various TV channel frequencies. The device includes a modulator for modulating a carrier wave with the video and audio signals to provide a modulated signal, a mixer for mixing the modulated signal with a local oscillation signal to provide mixed signals, a wide band amplifier for amplifying the mixed signals and a variable low-pass filter for filtering the amplified mixed signals to provide a TV broadcasting signal of desired frequency. The device further includes a control device for controlling the frequency of the local oscillation signal and the cutoff frequency of the variable low-pass filter so as to cancel a higher harmonic component from the output signal to avoid undesirable inteference.
摘要翻译： 一种特别适用于联合TV接收装置的调制装置，用于将输入的视频和音频信号调谐到各种TV频道频率。 该装置包括用视频和音频信号调制载波以提供调制信号的调制器，用于将调制信号与本地振荡信号混合以提供混合信号的混频器，用于放大混合信号的宽带放大器和 可变低通滤波器，用于对放大的混合信号进行滤波，以提供所需频率的TV广播信号。 该装置还包括用于控制本地振荡信号的频率和可变低通滤波器的截止频率的控制装置，以便从输出信号中消除高次谐波分量，以避免不期望的干扰。
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公开(公告)号：USD489712S1
公开(公告)日：2004-05-11
申请号：US29177039
申请日：2003-03-03
申请人： Akihiko Nagatomi
设计人： Akihiko Nagatomi
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公开(公告)号：US4509198A
公开(公告)日：1985-04-02
申请号：US421083
申请日：1982-09-22
申请人： Akihiko Nagatomi
发明人： Akihiko Nagatomi
摘要： A satellite broadcast signal receiving system for receiving a plurality of signals of individual transmission bands, which are mutually different in frequency and/or polarization angle, transmitted through an artificial satellite, wherein the signals picked up by an antenna or antennas are first applied to a plurality of outdoor units each corresponding to one transmission band and comprising a convertor for converting the incoming signal into an IF signal, and the converted IF signals are then applied through a change-over switch to a common indoor unit including a demodulator to be demodulated for application to a conventional television set or the like.
摘要翻译： 一种卫星广播信号接收系统，用于接收通过人造卫星发送的频率和/或偏振角相互不同的各个传输频带的多个信号，其中由天线或天线拾取的信号首先被应用于 多个室外单元各自对应于一个传输频带，并且包括用于将输入信号转换成IF信号的转换器，然后通过转换开关将转换的IF信号施加到包括要解调的解调器的公共室内单元，以供解调 适用于传统的电视机等。
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