Method and system for embedding metadata in multiplexed analog videos broadcasted through digital broadcasting medium
First Claim
1. A system for embedding metadata in at least one analog video frame, the system comprising:
- a processor; and
a memory coupled to the processor, wherein the processor is capable of executing instructions stored in the memory to;
generate at least one data symbol representing the metadata 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, wherein the at least one pilot bit is used as a reference bit for identification of the at least one data bit to be transmitted, wherein the at least one pilot bit is converted into at least one pilot symbol and the at least one data bit is converted into the at least one data symbol;
embed the at least one data symbol with the at least one pilot symbol into at least one first set of video pixels corresponding to a video pixel region 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 representing non-embedded metadata pixels in the at least one analog video frame to generate at least one set of multiplexed video pixels.
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Abstract
The present invention provides 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. 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.
37 Citations
9 Claims
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1. A system for embedding metadata in at least one analog video frame, the system comprising:
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a processor; and a memory coupled to the processor, wherein the processor is capable of executing instructions stored in the memory to; generate at least one data symbol representing the metadata 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, wherein the at least one pilot bit is used as a reference bit for identification of the at least one data bit to be transmitted, wherein the at least one pilot bit is converted into at least one pilot symbol and the at least one data bit is converted into the at least one data symbol; embed the at least one data symbol with the at least one pilot symbol into at least one first set of video pixels corresponding to a video pixel region 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 representing non-embedded metadata pixels in the at least one analog video frame to generate at least one set of multiplexed video pixels. - View Dependent Claims (2, 3, 4)
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5. A method for embedding metadata in at least one analog video frame, the method comprising:
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providing at least one data bit and at least one pilot bit associated with the metadata; generating at least one data symbol representing the metadata based on the at least one data bit and the at least one pilot bit, wherein the at least one pilot bit is used as a reference bit for identification of the at least one data bit to be transmitted, wherein the at least one pilot bit is converted into at least one pilot symbol and the at least one data bit is converted into the at least one data symbol; embedding the at least one data symbol with the at least one pilot symbol into at least one first set of video pixels corresponding to a video pixel region of the at least one analog video frame to generate at least one set of data pixels; and multiplexing the at least one set of data pixels with at least one second set of video pixels representing non-embedded metadata pixels in the at least one analog video frame to generate at least one set of multiplexed video pixels. - View Dependent Claims (6, 7, 8, 9)
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Specification