Broadcast system and method for error correction using separately received redundant data and broadcast data

A receiver terminal, comprising:

• broadcast receiver circuitry configured to receive broadcast data representing real-time content and non-real-time content, the non-real-time content being controlled to be pre-downloaded to a non-transitory storage of the receiver terminal;
• second receiver circuitry configured to perform a calculation of redundancy data as a required number of Forward Error Correction (FEC) elements to complete decoding of an item of the non-real-time content, to request and receive redundancy data from a server based on the calculation, and
• control circuitry configured to
• store the broadcast data received by the broadcast receiver circuitry, and
• synchronize the redundancy data and the broadcast data and jointly decode the broadcast data and redundancy data to reconstruct the item of non-real-time content.

A method, comprising:

• receiving, by broadcast receiver circuitry, broadcast data representing real-time content and non-real-time content, the non-real time content being controlled to be pre-downloaded to a non-transitory storage of a receiver terminal;
• performing a calculation of redundancy data as a required number of Forward Error Correction (FEC) elements to complete decoding of an item of non-real-time content;
• requesting and receiving, by second receiver circuitry, redundancy data based on the calculation from a server;
• storing, by control circuitry, the broadcast data received by the broadcast receiver circuitry;
• and
• synchronizing, by the control circuitry, the redundancy data and the broadcast data, and jointly decoding the broadcast data and redundancy data to reconstruct the item of non-real-time content.

A non-transitory computer-readable medium encoded with computer-readable instructions that, when executed by circuitry of a receiver, cause the circuitry to perform a method comprising:

• performing a calculation of redundancy data as a required number of Forward Error Correction (FEC) elements to complete decoding of an item of non-real-time content;
• requesting and receiving, by second receiver circuitry, redundancy data based on the calculation from a server;
• storing, by control circuitry, the broadcast data received by the broadcast receiver circuitry;
• and
• synchronizing, by the control circuitry, the redundancy data and the broadcast data, and jointly decoding the broadcast data and redundancy data to reconstruct the item of non-real-time content.