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US 2010/0138730 A1Published application
Fault detection using embedded watermarks
AssigneeThomson Licensing
InventorsAre Olafsen, Jeffrey Adam Bloom, Kumar Ramaswamy
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Abstract
Detection of faults in a transmitted signal stream occurs by recovering, from the information stream, a water mark embedded in the stream prior to transmission. The embedded watermark has data characteristic of stream quality. Thereafter, the at least one watermark property is analyzed to detect faults in the received information stream.
Claims17
A method comprising the steps of:
- recovering, from a received information stream, a watermark embedded in the stream, the watermark having data that is characteristic of stream quality;
- and
- analyzing the watermark to establish the quality of the received information stream.
A method for communicating an information stream to a downstream receiver, comprising the step of
- embedding in the information stream prior to transmission a watermark having data characteristic of stream quality.
Apparatus comprising:
- a receiver for receiving an information stream having a watermark embedded in the stream, the watermark having data that is characteristic of stream quality;
- a watermark detector for extracting the data from the watermark;
- and
- a fault detector for analyzing the extracted data to detect whether a fault exists in the received information stream.
1 more element
Dependencies are inferred from the claim text.