Patent ID: 7583696

Claim:
A system for digital broadcast protocol conversion, comprising: a first protocol extractor for demultiplexing a transport stream of an ATSC (Advanced Television Systems Committee) broadcast standard to extract first PSIP (Program and System Information Protocol) data as a first broadcast protocol, the first protocol extractor further extracting first PSI data corresponding to the first PSIP data; a second protocol extractor for demultiplexing a transport stream of a DVB (Digital Video Broadcasting) broadcast standard to extract first SI (System Information) data as a second broadcast protocol, the second protocol extractor further extracting second PSI data corresponding to the first SI data; a protocol converter for receiving one of the first PSIP data from the first protocol extractor and the first SI data from the second protocol extractor to produce a converted protocol, the protocol converter converting the first PSIP data to second SI data corresponding to the second broadcast protocol of the DVB broadcast standard, or converting the first SI data to second PSIP data corresponding to the first broadcast protocol of the ATSC broadcast standard, wherein the protocol converter further reconstructs the first PSI data to produce resulting PSI data when converting the first PSIP data into resulting SI data, or reconstructs the second PSI data to produce the resulting PSI data when converting the first SI data to resulting PSIP data; and a multiplexer for multiplexing the converted protocol with the transport stream, from which one of the first broadcast protocol and the second broadcast protocol has been extracted; wherein the protocol converter further comprises: a database for storing the first PSIP data, the first SI data, and one of the first PSI data and the second PSI data, and PSIP, SI, and PSI reconstructors for respectively reconstructing the first PSIP data, the first SI data, and one of the first PSI data and the second PSI data stored in the database to produce the resulting PSIP data, the resulting SI data, and the resulting PSI data.