METHOD AND SYSTEM FOR EMBEDDING METADATA IN MULTIPLEXED ANALOG VIDEOS BROADCASTED THROUGH DIGITAL BROADCASTING MEDIUM

摘要

A method and system for broadcast of additional content such as metadata required for client specific interactive application in an analog domain along with conventional audio, video and PSI or SI data is disclosed. The present invention enables transmission of encoded audio data or EPG data, timestamp information required for audio video synchronization referred to as metadata by embedding such metadata in the pixels of video pixels and then encoding by the standard video encoder to generate an encoded stream. The encoded stream is decoded using the standard video decoder at the receiving station to generate a Composite Video Blanking and Sync (CVBS) analog video signal. From the CVBS signal, the RGB or YUV pixels of the videos are extracted. Finally a data extractor module retrieves the embedded metadata from the RGB or YUV pixels.

主权项

1. A system for embedding metadata in at least one analog video frame, the system comprising:
a content generation module configured to:
generate at least one data symbol and at least one pilot symbol based on at least one data bit and at least one pilot bit, the at least one data bit and the at least one pilot bit being associated with the metadata,embed the at least one data symbol and the at least one pilot symbol into at least one first set of video pixels of the at least one analog video frame to generate at least one set of data pixels, and multiplex the at least one set of data pixels with at least one second set of video pixels of the at least one analog video frame to generate at least one set of multiplexed video pixels.