System and method of data transfer in-band in video via optically encoded images
US11557015B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Apr 3, 2019 |
| Grant date | Jan 17, 2023 |
| Priority date | — |
| Expiry date | Jan 22, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/46
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Data are encoded into one or more optically encoded images. The optically encoded images are then inserted as image data into a video sequence—i.e., in video frames. Data are transmitted in-band within the video, via any conceivable video distribution channel or format. The video may be trans-coded as required—because the data are optically encoded, any video processing that even crudely preserves the frame images will preserve the optically encoded data. This scheme of in-band data transfer in video is very robust. A video receiving apparatus receives the video, inspects the image data from video frames in memory, detects optically encoded images in the image data, and decodes the optically encoded images to recover the data. The frames carrying optically encoded images are typically discarded and not rendered to a display. The data from a plurality of optically encoded images may be concatenated, and further processed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.