公开(公告)号：US3659050A

公开(公告)日：1972-04-25

申请号：US3659050D

申请日：1970-10-22

申请人： ERICSSON TELEFON AB L M

发明人： CARLSSON ANDERS KJELL JOHAN ,  JORGENSEN ANDERS OSSIAN ,  OLSSON OLOF ALARIK ,  ZIEGLER HORST ROBERT ADOLF

IPC分类号： H04M1/00 ,  H04M1/02 ,  H04M1/60 ,  H04M1/62

CPC分类号： H04M1/62 ,  H04M1/0202 ,  H04M1/6033

摘要： Combined loud- and low-speaking telephone instrument in one unit comprising no more than two electro-acoustic converters, one of which is used as a microphone when the telephone instrument is in its loud-speaking function position and as a telephone receiver when the instrument is in its low-speaking function position, while the other electro-acoustic converter is used as a loudspeaker when the telephone instrument is in its loud-speaking function position and as a microphone when the instrument is in its low-speaking function position. When resting on a table or a similar support a switch button which protrudes through the bottom of the telephone instrument is pressed in so as to keep this in its loud-speaking function position, and when the instrument is lifted from its support the switch button is pressed out switching the instrument to its low-speaking function position.

摘要翻译： 组合的大声低声电话乐器在一个单元中，包括不超过两个电声转换器，当电话乐器处于其扬声功能位置时，其中一个用作麦克风，当仪器 处于低声功能位置，而当电话乐器处于扬声功能位置时，其他电声转换器用作扬声器，当乐器处于低声功能位置时用作麦克风 。 当放在桌子或类似的支架上时，通过按压电话乐器底部的开关按钮将其保持在扬声器的功能位置，当仪器从支架上抬起时，开关按钮为 按下将仪器切换到低位功能位置。