发明申请
- 专利标题: DTMF GENERATING ASSISTANT
- 专利标题(中): DTMF发电助手
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申请号: US11691881申请日: 2007-03-27
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公开(公告)号: US20070286400A1公开(公告)日: 2007-12-13
- 发明人: John Ruckart
- 申请人: John Ruckart
- 主分类号: H04M1/00
- IPC分类号: H04M1/00
摘要:
A DTMF generating device for automatically generating DTMF tones corresponding to a predefined phone number comprises a processor, a memory, and a speaker enveloped in a credit card sized casing. The memory has stored therein DTMF tone samples corresponding to the predefined phone number. When a user presses on a portion of the casing, the DTMF tone samples are played by the speaker.
公开/授权文献
- US07409055B2 DTMF Generating assistant 公开/授权日:2008-08-05
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