Communication apparatus and control method therefor
US-9219814-B2 · Dec 22, 2015 · US
Modem signaling using a multitone prefix over a voice channel of a wireless communication system
US9225844B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9225844-B2 |
| Application number | US-90184110-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 11, 2010 |
| Priority date | Oct 22, 2009 |
| Publication date | Dec 29, 2015 |
| Grant date | Dec 29, 2015 |
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Abstract
Official abstract text for this publication.
A system and method of communicating data between a vehicle and call center via a voice channel of a wireless communication system. The method carried out by the system includes the steps of: establishing a voice channel connection between a vehicle telematics unit and call center via a wireless cellular network; generating a modem signaling carrier comprising a prefix followed by a single frequency tone; sending the modem signaling carrier over the voice channel connection using an EVRC-B vocoder; establishing a data communication session over the voice channel connection in response to the modem signaling carrier; and thereafter carrying out data communications between the vehicle telematics unit and call center during the data communication session.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method of communicating with a modem via a voice channel of a wireless communication system, comprising the steps of: generating a composite carrier comprising a prefix together with a tone having at least one frequency component, wherein the prefix comprises a speech component or a speech-like audio signal having multiple spectral components in the audio frequency range that each vary over time in amplitude, frequency, or both; and sending the com…
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- H04M11/066Primary
Electricity · mapped topic
Physics · mapped topic
Electricity · mapped topic
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Frequently asked questions
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- What does patent US9225844B2 cover?
- A system and method of communicating data between a vehicle and call center via a voice channel of a wireless communication system. The method carried out by the system includes the steps of: establishing a voice channel connection between a vehicle telematics unit and call center via a wireless cellular network; generating a modem signaling carrier comprising a prefix followed by a single freq…
- Who is the assignee on this patent?
- Madhavan Sethu K, Saraydar Cem U, Macdonald Andrew J, and 3 more
- What technology area does this patent fall under?
- Primary CPC classification H04M11/066. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Dec 29 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).