发明名称 PORTABLE COMMUNICATION
摘要 An auditory training system for individuals with severe hearing difficulties utilizes a limited range radio system for communications from an instructor having a transmitter 20 to one or more students having receivers 30. A visual telemetering indication of the status of the students' receivers is provided to enable the instructor to maintain constant awareness of the integrity of the radio system so as to know whether or not individuals participating are capable of receiving communications from the instructor. An LED indicator 34, responsive to an RF carrier signal emitted by transmitter 20, is provided on each receiver 30 so that the instructor is visually aware that the student is receiving an instruction. A low battery indicator 19 may also be provided. <IMAGE>
申请公布号 AU8876082(A) 申请公布日期 1983.04.14
申请号 AU19820088760 申请日期 1982.09.27
申请人 TELEX COMMUNICATIONS, INC. 发明人 DAVID ALLEN HOTVET
分类号 G09B5/00;G09B5/14;H04B17/00 主分类号 G09B5/00
代理机构 代理人
主权项
地址