专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US4525869A Diversity receiver 失效
标题翻译：分集接收机
公开(公告)号：US4525869A
公开(公告)日：1985-06-25
申请号：US487483
申请日：1983-04-22
申请人： Masanori Hamada , Sadao Ono
发明人： Masanori Hamada , Sadao Ono
IPC分类号： H04B7/08
CPC分类号： H04B7/0814 , H04B7/0831
摘要： The diversity receiver having a plurality of antennas and one receiver comprises a detector means to detect a signal voltage responsive to an antenna output from an intermediate frequency amplifier of the receiver, and a comparator unit to receive two separated components of the signal voltage from the detector unit through two separated paths, so that one of the antennas which is in the best receiving condition is selected in response to an output from the comparator unit.
摘要翻译：具有多个天线和一个接收机的分集接收机包括：检测装置，用于响应于来自接收机的中频放大器的天线输出检测信号电压;以及比较器单元，用于接收来自检测器的信号电压的两个分离的分量单元通过两个分离的路径，使得响应于比较器单元的输出来选择处于最佳接收状态的天线之一。

2. 发明授权

US4349779A Volume control apparatus 失效
标题翻译：音量控制装置
公开(公告)号：US4349779A
公开(公告)日：1982-09-14
申请号：US228645
申请日：1981-01-26
申请人： Sadao Ono
发明人： Sadao Ono
IPC分类号： H03G3/02 , H03G3/00 , H03G3/04 , H03H7/25 , H03K5/19 , H03G5/02
CPC分类号： H03H7/25 , H03G3/001 , H03G3/04
摘要： A volume control apparatus wherein a digital output from an up/down counter having a clock input terminal and an up/down control terminal is converted into an analog output by a D/A converter and used as a control input to an electronic attenuator. A rotary pulse generator produces a pulse each time it is rotated through a given operating rotation angle at either a first output terminal or a second output terminal, according to the operating direction. The output terminals are coupled to input terminals of the logic circuit, respectively, an output terminal of the logic circuit is coupled to a clock input terminal of the up/down counter, and the second output terminal is coupled to another input terminal of the logic circuit and to an up/down control terminal of the up/down counter.
摘要翻译：一种音量控制装置，其中来自具有时钟输入端和上/下控制端的上/下计数器的数字输出由D / A转换器转换为模拟输出，并用作电子衰减器的控制输入。根据操作方向，旋转脉冲发生器每当在第一输出端或第二输出端旋转给定的操作旋转角时产生脉冲。输出端分别耦合到逻辑电路的输入端，逻辑电路的输出端耦合到上/下计数器的时钟输入端，第二输出端耦合到逻辑电路的另一个输入端电路和上/下计数器的上/下控制端子。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式