Multiplex communications – Communication techniques for information carried in plural... – Combining or distributing information via time channels
Reexamination Certificate
2011-07-19
2011-07-19
Moe, Aung S (Department: 2474)
Multiplex communications
Communication techniques for information carried in plural...
Combining or distributing information via time channels
C370S320000, C370S335000, C370S342000, C370S441000, C370S479000, C370S493000, C370S494000, C455S702000, C455S703000, C375S134000, C375S137000, C375S272000, C375S275000, C375S303000, C375S307000, C375S334000, C375S335000
Reexamination Certificate
active
07983310
ABSTRACT:
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.
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Birmingham Kiley
Hirano Michael
Quimby David
Zhao Lee
Airbiquity Inc.
Chung Hoon J
Moe Aung S
Stolowitz Ford Cowger LLP
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