发明授权
- 专利标题: Telephone call selector
- 专利标题(中): 电话呼叫选择器
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申请号: US92936申请日: 1987-09-03
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公开(公告)号: US4802202A公开(公告)日: 1989-01-31
- 发明人: Ryoichi Takahashi , Seiichi Ogawa , Isao Ohtawara
- 申请人: Ryoichi Takahashi , Seiichi Ogawa , Isao Ohtawara
- 申请人地址: JPX
- 专利权人: Sanyo Electric Co., Ltd.
- 当前专利权人: Sanyo Electric Co., Ltd.
- 当前专利权人地址: JPX
- 优先权: JPX61-213380 19860910; JPX61-222631 19860919; JPX61-227775 19860925; JPX61-244373 19861015; JPX61-255233 19861027
- 主分类号: H04M1/66
- IPC分类号: H04M1/66 ; H04M1/2745 ; H04M1/64 ; H04M1/665 ; H04M1/57
摘要:
A telephone call selector in a telephone which comprises a memory circuit for storing a plurality of telephone numbers; an automatic dialing device operable to read out one of the telephone numbers from the memory circuit and to output a dialed signal representative of such one of the telephone numbers; a comparator for comparing a number, corresponding to a DTMF signal transmitted from a calling party subsequent to the receipt of a ringing signal generated from a local telephone of the calling party, with any one of identifier codes; and a loudspeaker device for emitting ringing sounds when the the number corresponding to the DTMF signal coincides with such one of the identifier codes. The telephone numbers stored in the memory circuit are utilized as the respective identifier codes.
公开/授权文献
- USD424486S Vehicle rear bumper 公开/授权日:2000-05-09
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