System and method for dynamically transmitting network alert system (NAS) information from television network to stations using information embedded in an HDTV signal

1. A system for dynamically transmitting ancillary data from a television network to an affiliate station using information embedded in an HDTV signal, comprising:

a data server configured to provide ancillary data;

a network video programming source configured to provide network video programming;

a data inserter configured to insert the ancillary data into video line 12 , data ID (DID) 0x53, secondary data ID (SDID) 0x01 of vertical ancillary (VANC) space of a high definition television (HDTV) signal to develop a combined network video programming and ancillary data signal; and

a transmission facility configured to transmit the combined network video programming and ancillary data signal.

2. The system of claim 1 , in which the data inserter further comprises:

a data formatter configured to format the ancillary data; and

a multiplexer configured to combine the network video programming and ancillary data to form the combined network video programming and ancillary data signal.

3. The system of claim 2 , in which the ancillary data is chosen from network alert system (NAS) data and program system information protocol (PSIP) data.

4. The system of claim 3 , in which the NAS data is used to provide updated alert information to an affiliate station.

5. A system for dynamically receiving ancillary data from a television network using information embedded in an HDTV signal, comprising:

a receiver configured to receive a combined network video programming and ancillary data signal, the ancillary data signal carried in video line 12 , data ID (DID) 0x53, secondary data ID (SDID) 0x01 of vertical ancillary (VANC) space of a high definition television (HDTV) signal, the receiver configured to extract the ancillary data signal and the network video programming; and

a station master control system configured to receive the extracted ancillary data signal.

6. The system of claim 5 , in which the receiver further comprises:

a demultiplexer configured to extract the ancillary data signal from the network video programming; and

a data formatter configured to format the extracted ancillary data into an XML/HTML format.

7. The system of claim 6 , in which the ancillary data is chosen from network alert system (NAS) data and program system information protocol (PSIP) data.

8. The system of claim 7 , in which the NAS data is used to provide updated alert information to an affiliate station.

9. A method for dynamically transmitting ancillary data from a television network to an affiliate station using information embedded in an HDTV signal, comprising:

providing ancillary data;

providing network video programming;

inserting the ancillary data into video line 12 , data ID (DID) 0x53, secondary data ID (SDID) 0x01 of vertical ancillary (VANC) space of a high definition television (HDTV) signal to develop a combined network video programming and ancillary data signal; and

transmitting the combined network video programming and ancillary data signal.

10. The method of claim 9 , in which the inserting further comprises:

formatting the ancillary data; and combining the network video programming and ancillary data.

11. The method of claim 10 , in which the ancillary data is chosen from network alert system (NAS) data and program system information protocol (PSIP) data.

12. The method of claim 11 , further comprising providing updated alert information to an affiliate station.

13. The system of claim 3 , in which the PSIP data is used to provide a dynamically updated electronic programming guide (EPG) having the latest, most recent and relevant PSIP data.

14. The system of claim 7 , in which the PSIP data is used to provide a dynamically updated electronic programming guide (EPG) having the latest, most recent and relevant PSIP data.

15. The system of claim 11 , further comprising providing a dynamically updated electronic programming guide (EPG) having the latest, most recent and relevant PSIP data.

16. A method for dynamically transmitting ancillary data from a television network to an affiliate station using information embedded in an HDTV signal, comprising:

combining network video programming and ancillary data into video line 12 , data ID (DID) 0x53, secondary data ID (SDID) 0x01 of vertical ancillary (VANC) space of a high definition television (HDTV) signal to develop a combined network video programming and ancillary data signal; and

transmitting the combined network video programming and ancillary data signal.