发明申请
US20070286400A1 DTMF GENERATING ASSISTANT 有权
DTMF发电助手

  • 专利标题: DTMF GENERATING ASSISTANT
  • 专利标题(中): DTMF发电助手
  • 申请号: US11691881
    申请日: 2007-03-27
  • 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
DTMF GENERATING ASSISTANT
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.
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