Concealed metadata transmission system
View Patent ↗System and method for embedding and concealing data within a video signal such that the embedded data is displayed within an unused portion of a video display area such that the embedded data is not visually offensive. In one embodiment the encoding of metadata may be executed by translating or adjusting pixel values of the video signal within the secondary image area, such that the pixel values are repurposed to contain the metadata and wherein the metadata is visually imperceptible.
1. A method comprising:
receiving a media signal having a first display format from a broadcast source wherein the signal comprises video content and embedded data;
decoding the media signal;
displaying the video content in a primary image area of a display device, the primary image area having a second display format; and
displaying simultaneously with the video content a secondary image area on the display device, wherein the secondary image area is outside the primary image area and contains the embedded data, and wherein the embedded data is displayed on the display device within the secondary image area such that the displayed embedded data is concealed and visually imperceptible.
2. The method of claim 1 wherein the secondary image area is a letterbox or pillarbox region of the display device.
3. The method of claim 1 wherein the embedded data is concealed within a plurality of pixels of the secondary image area.
4. The method of claim 1 wherein the embedded data is characterized by a plurality of pixel intensity differences.
5. The method of claim 1 wherein the embedded data is concealed within a varying intensity graphic that scrolls through the secondary image area.
6. The method of claim 1 wherein the embedded data comprises at least one of: guide data, program related information, network messages, audience measurement data, forensic markers, closed captioning, and content advisory data.
7. An apparatus for displaying media content comprising:
a network interface which receives a media signal from a broadcast source, wherein the media signal comprises video content and embedded data;
a processor coupled to the network interface, the processor configured to:
decode the media signal;
display the video content in a primary image area of a display device; and
display simultaneously with the video content, a secondary image area on the display device wherein the secondary image area is outside the primary image area and contains the embedded data which is displayed on the display device such that the displayed embedded data is concealed and visually imperceptible.
8. The apparatus as described in claim 7 wherein said processor is further configured to display concealed data within a plurality of pixels of the secondary image area.
9. The apparatus as described in claim 7 wherein said processor is further configured to display embedded data as a plurality of pixel intensity differences.
10. The apparatus as described in claim 7 wherein said processor is further configured to display embedded data as scrolling intensity values within the secondary image area.
11. The apparatus as described in claim 7 wherein said processor is further configured to display embedded data as a varying intensity graphic that scrolls through the secondary image area.
12. A method for encoding metadata into a video signal having primary and secondary image areas comprising:
receiving metadata; and
encoding the metadata into the video signal by translating pixel values of the video signal within the secondary image area, wherein the secondary image area is outside the primary image area and contains the embedded data, such that those pixel values are repurposed to contain the metadata and wherein the metadata is concealed and visually imperceptible when decoded and displayed.
13. The method of claim 12 wherein the secondary image area is a letterbox or pillarbox region of the video signal.
14. The method of claim 12 wherein translating the pixel values of the video signal within the secondary image area further comprises translating one or more lumen components of a plurality of pixels.
15. The method of claim 14 wherein translating the one or more lumen components of the plurality of pixels comprises illuminating pixels at varying intensities.
16. The method of claim 12 wherein translating the one or more lumen components of a plurality of pixels comprises adjusting values of the pixels such that lumen intensities may be interpreted as binary data.
17. The method of claim 12 wherein translating the pixel values of the video signal within the secondary image area further comprises scrolling intensity values within the secondary image area.
18. The method of claim 17 wherein scrolling intensity values within the secondary image area further comprises a varying intensity graphic that scrolls through the secondary image area.
19. The method of claim 12 wherein encoding the metadata into the video signal is performed such that the metadata is extractable from video signal.
20. The method of claim 12 wherein the embedded metadata comprises at least one of: guide data, program related information, network messages, audience measurement data, forensic markers, closed captioning, and content advisory data.
21. An apparatus for encoding metadata into a video signal comprising:
a video content input;
a metadata input;
an encoder coupled to said video content input and metadata input, said encoder to execute one or more actions to translate pixel values of the video signal within a secondary image area, wherein the secondary image area is outside the primary image area and contains the embedded data, such that those pixel values are repurposed to contain the metadata and wherein the metadata is concealed and visually imperceptible when decoded and displayed.