The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 19, 2011
Filed:
Oct. 15, 2008
Michael Hirano, Redmond, WA (US);
Kiley Birmingham, San Luis Obispo, CA (US);
Lee Zhao, Sammamish, WA (US);
David Quimby, Seattle, WA (US);
Michael Hirano, Redmond, WA (US);
Kiley Birmingham, San Luis Obispo, CA (US);
Lee Zhao, Sammamish, WA (US);
David Quimby, Seattle, WA (US);
Airbiquity Inc., Seattle, WA (US);
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.