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Mobile radio, bus-connected to alternative telephone sets - i.e. handset and hands-free microphone loudspeaker combination which share common bus line to digital controller
Mobile radio, bus-connected to alternative telephone sets - i.e. handset and hands-free microphone loudspeaker combination which share common bus line to digital controller
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机译:总线连接到备用电话机的移动无线电-即听筒和免提麦克风扬声器组合,它们共用公共总线与数字控制器
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摘要
A first bus line (12) connects the radio transceiver (1) to a hands-free speech controller (8) incorporating amplifiers (V), convertors (A/D) and a digital signal processor (9). Analogue signals are conveyed by a second bus line (10) in both directions between the controller (8) and two telephone sets (2,3). One set (2) is a handset incorporating a microphone (6) and earphone (7). The other set (3) allowing hands-free operation includes a loudspeaker (4) and a microphone (5) linked to the bus line (10) by a two-way amplifying unit. ADVANTAGE - Can be installed, esp. in motor vehicle, easily and at low cost.
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