Transmission of a digital message interspersed throughout a compressed information signal
US8054969B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 15, 2007 |
| Grant date | Nov 8, 2011 |
| Priority date | — |
| Expiry date | Jun 19, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L63/168
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method is disclosed that enables the transmission of a digital message along with a corresponding media information signal, such as audio or video. A telecommunications device that is processing the information signal from its user, such as a speech signal, encodes the information signal by using a model-based compression coder. One such device is a telecommunications endpoint. Then, based on an evaluation of the perceptual significance of each encoded bit, or on some other meaningful characteristic of the signal, the endpoint's processor: (i) determines which encoded bits can be overwritten; and (ii) intersperses the digital message bits throughout the encoded signal in place of the overwritten bits. The endpoint then transmits those digital message bits as part of the encoded information signal. In this way, no additional bits are appended to the packet to be transmitted, thereby addressing the issue of compatibility with existing protocols and firewalls.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.