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US 6,788,225 B2Granted
System and method for intraframe timing in multiplexed channel
AssigneesSony Corporation, Sony Electronics Inc.
InventorRobert Allan Unger
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Abstract
To reduce peak bandwidth requirements for a channel carrying several multiplexed MPEG-type programs, the generation of large intraframes is coordinated among the programs to avoid two program encoders simultaneously encoding an intraframe.
Claims19
A communication system, comprising:
- plural encoders, each encoding a respective program to generate at least intraframes and interframes;
- and
- at least one processor having logic to coordinate at least two encoders of the plural encoders such that the simultaneous encoding of intraframes by at least two encoders is avoided for at least one portion of at least one program.
A method for managing bandwidth demand in at least one channel carrying at least two programs, comprising:
- reducing the likelihood that intraframes for at least a threshold number of programs coincidentally will be generated simultaneously with each other by a least two encoders each of which can generate intraframes.
A system, comprising:
- generating means for generating at least two video streams characterized by intraframes and interframes;
- multiplexing means for causing a single channel to convey at least two video streams simultaneously;
- and
- coordinating means for substantially preventing the simultaneous generation of more than a threshold number of intraframes, wherein periodic generation of intraframes is caused to rotate from one encoder to another encoder in the generating means.
1 more element
Dependencies are inferred from the claim text.