发明名称 |
METHODS FOR IN-BAND SIGNALING THROUGH ENHANCED VARIABLE-RATE CODECS |
摘要 |
<p>Improvements are disclosed for in-band signaling, i.e., transmission of data in a voice channel of a digital wireless network during a voice call session. A family of narrow-band signaling methods is disclosed to successfully pass data-carrying signals through the low-bit rate modes of the EVRC-B vocoder commonly used in CDMA wireless channels. Some embodiments generate a tapered signaling waveform in tandem with another waveform using FSK-modulation. These features can be used in cell phones or other wireless communication devices, including automotive applications.</p> |
申请公布号 |
EP2332264(A4) |
申请公布日期 |
2015.03.04 |
申请号 |
EP20090813752 |
申请日期 |
2009.09.14 |
申请人 |
AIRBIQUITY INC. |
发明人 |
HIRANO, MICHAEL;BIRMINGHAM, KILEY;ZHAO, LEE;QUIMBY, DAVID |
分类号 |
H04B1/38;H04L25/03;H04L27/10;H04M11/06 |
主分类号 |
H04B1/38 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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