专利名称：Full duplex audio respon device 发明人：Hisao Sakai
申请号：US05/828101
申请日：197708262012年6月英语四级真题及答案
公开号：US04191855A
bag是什么意思公开日：
旬是什么意思
lawsuit
19800304南京翻译公司
专利内容由知识产权出版社提供
conduct
摘要：In an audio respon device comprising an incoming trunk, a push button signal receiver, a voice output unit and a control unit and associated with a terminal t such as a push button calling telephone t, there is provided a full duplex audio respon device which includes a hybrid circuit dispod in the incoming trunk associated with the terminal t and a band-pass filter interpod between the voice output unit and the hybrid circuit for filtering a frequency component corresponding to a specified push button, and in which the hybrid circuit may receive a voice output signal pasd through the band-pass filter and a push button signal from the terminal t simultaneously so that the push button signal can be received even when the voice output signal is transmitted to the terminal t.
fraud申请人：HITACHI LTD2011格莱美
代理机构：Craig and Antonelli
pollution
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