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US 7,443,452 B1Granted
Method for simultaneously delivering ATSC/MPEG source material to dual modulated RF television outputs
AssigneeSencore, Inc.
InventorTerry D. Cook
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Abstract
A single electronic device is disclosed that splits a transport stream in order to simultaneously produce NTSC and ATSC standard outputs with the same video and audio content so that the same content can be viewed side-by-side on a standard definition NTSC television and an ATSC digital HDTV set at the same time.
Claims4
A method of simultaneously delivering ATSC/MPEG source material to dual modulated RF television outlets, comprising the steps of:
- reading and storing an MPEG transport stream;
- splitting said transport stream and simultaneously feeding same into an 8-VSB modulator and an MPEG decoder;
- converting said one of said split transport stream fed into said 8-VSB modulator to an 8 level VSB signal;
- decoding said other of said split transport stream into baseband audio and video signals, and
- amplitude modulating said video signal and frequency modulating said audio signal.
2 more elements
Dependencies are inferred from the claim text.