Dynamic mapping of broadcast resources
First Claim
1. A method of program mapping in a broadcast system comprising:
- providing a remote map at a transmission processor allocating broadcast resources to a plurality of input data streams comprising one or more programs;
providing a local map at a reception processor allocating the broadcast resources to output data streams; and
modifying the remote and local maps to alter the allocation of the broadcast resources in synchrony with events related to the one or more programs.
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Abstract
In a data communication system such as a high capacity DBS system, dynamic mapping of broadcast resources is provided to exploit occasional redundancy in the program content of two or more input data streams, freeing at least one broadcast resource to carry alternate bitstreams, such as additional programs or existing programs at higher quality. Transmission maps defining the correspondence between input data streams and broadcast resources, and reception maps defining the correspondence between broadcast resources and output data streams, are updated as needed to dynamically modify broadcast resource mapping to increase effective utilization of available bandwidth. Beneficial n:n−y:m mapping in a high capacity consumer DBS entertainment system is provided. Apparatus and methods for efficiently generating, maintaining and updating allocation maps with reduced overhead requirements, are disclosed.
127 Citations
13 Claims
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1. A method of program mapping in a broadcast system comprising:
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providing a remote map at a transmission processor allocating broadcast resources to a plurality of input data streams comprising one or more programs; providing a local map at a reception processor allocating the broadcast resources to output data streams; and modifying the remote and local maps to alter the allocation of the broadcast resources in synchrony with events related to the one or more programs. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification