APPARATUS, SYSTEMS AND METHODS FOR PRODUCING COHERENT SYMBOLS IN A SINGLE FREQUENCY NETWORK
First Claim
1. A method for producing a plurality of coherent symbols from a plurality of digital RF transmitters having a plurality of Trellis coders, comprising the steps of:
- receiving a digital signal containing content data to be broadcast from the plurality of digital RF transmitters;
inserting a first initialization packet into the digital signal, the initialization packet containing a plurality of stuff bytes for deterministically initializing the plurality of Trellis coders in the plurality of digital RF transmitters; and
transmitting the digital signal to the plurality of digital RF transmitters.
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Accused Products
Abstract
A system, method, apparatus and computer code are provided for producing coherent symbols from digital RF transmitters. A multiplexer receives a digital signal containing content data to be broadcast from the digital RF transmitters and inserts a first initialization packet into the digital signal, where the initialization packets implicit position in the digital signal will signal data framing in the digital RF transmitters. Where the initialization packet contains stuff bytes for deterministically initializing Trellis coders in the digital RF transmitters. A transport stream emitter transmits the digital signal to the plurality of digital RF transmitters.
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Citations
80 Claims
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1. A method for producing a plurality of coherent symbols from a plurality of digital RF transmitters having a plurality of Trellis coders, comprising the steps of:
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receiving a digital signal containing content data to be broadcast from the plurality of digital RF transmitters;
inserting a first initialization packet into the digital signal, the initialization packet containing a plurality of stuff bytes for deterministically initializing the plurality of Trellis coders in the plurality of digital RF transmitters; and
transmitting the digital signal to the plurality of digital RF transmitters. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. An apparatus for producing one or more initialization packets, comprising:
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a receiver operable to receive a digital signal containing content data to be broadcast from a plurality of digital RF transmitters;
a packet inserter operable to insert a first initialization packet into the digital signal, the initialization packet containing a plurality of stuff bytes for deterministically initializing a plurality of Trellis coders in the plurality of digital RF transmitters; and
a transmitter operable to transmit the digital signal to the plurality of digital RF transmitters. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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35. A computer program product comprising a computer usable medium having control logic stored therein for causing a computer to produce a plurality of coherent symbols from a plurality of digital RF transmitters having a plurality of Trellis coders, said control logic comprising:
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computer readable program code means for causing the computer to receive a digital signal containing content data to be broadcast from the plurality of digital RF transmitters;
computer readable program code means for causing the computer to insert a first initialization packet into the digital signal, the initialization packet containing a plurality of stuff bytes for deterministically initializing a plurality of Trellis coders in the plurality of digital RF transmitters; and
computer readable program code means for causing the computer to transmit the digital signal to the plurality of digital RF transmitters. - View Dependent Claims (36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51)
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52. A system for producing coherent symbols from a plurality of RF transmitters having a plurality of Trellis coders, comprising:
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a distribution network;
a multiplexer operable to receive the digital signal and insert a first initialization packet into the digital signal and to transmit the digital signal over a distribution network; and
a plurality of modulators operable to receive the digital signal from the distribution network and modulate the digital signal, and wherein the initialization packet contains a plurality of stuff bytes for deterministically initializing a plurality of Trellis coders in the plurality of modulators. - View Dependent Claims (53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68)
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69. An apparatus for producing a plurality of coherent symbols from a plurality of digital RF transmitters having a plurality of Trellis coders, comprising:
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means for receiving a digital signal containing content data to be broadcast from the plurality of digital RF transmitters;
means for inserting a first initialization packet into the digital signal, the initialization packet containing a plurality of stuff bytes for deterministically initializing the plurality of Trellis coders in the plurality of digital RF transmitters; and
means for transmitting the digital signal to the plurality of digital RF transmitters. - View Dependent Claims (70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80)
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Specification