Thomson Licensing

Philips Electronics North America Corporation

Marc Stuart Walker

Carl Christensen

Lynn Howard Arbuckle

David Lynn Blytheway

David Kim Blair

A fault-tolerant router includes first and second router matrix card. The first and second router matrix cards receive a common set of 4n parity encoded input digital audio data streams and respectively generates therefrom, first and second sets of M output digital audio streams. As the first and second sets of data streams propagate along the first and second router matrix cards, respectively, one or more health bits are set whenever an error or other type of fault condition is detected. First and second parity check circuits are configured to detect parity errors and/or assess the relative health of the first and second sets of data streams and one of the two sets of data streams is selected as the output of the fault-tolerant router based upon either the parity error analysis, health analysis or both.

Fault-tolerant broadcast router

A jitter unit converts a stable input test signal into a jittering output test signal used to test the jitter tolerance of electronic equipment. This jitter device allows any test or sample signal (analog or digital, video or audio) to be used for testing such equipment. Jitter is a type of timing error between the expected or ideal timing of a signal and the actual timing of a signal in which the characteristics of the timing error change with time. The characteristics of jitter include the level of error, the frequency of change in the error and whether the change is periodic or random. The jitter unit uses a variable delay unit to delay the signal and uses a controller to regulate the delay of the delay unit in order to transform the stable signal into a jittering signal.

Growing community of inventors

Taylorsville, UT, United States of America

Marc Stuart Walker