Method and apparatus for watermarking received television content
US7334247B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 24, 2000 |
| Grant date | Feb 19, 2008 |
| Priority date | — |
| Expiry date | Aug 4, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/426
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for inserting receiver identification codes into video images received from a television broadcasting station are disclosed. The apparatus comprises a receiver with a tuner for receiving a plurality of television channels and outputting a first television channel. A buffer is coupled to the tuner for storing a first image frame from the first television channel. The first image frame includes a multiplicity of pixel data. A memory stores identification data that provides a unique identification of the receiver. A controller is coupled to the buffer and the memory. The controller retrieves identification data from the memory and changes values of the pixel data to values of the identification data, thereby embedding the identification data into the first image frame. A display generator generates a display of the first television channel including the first image frame.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.