| 摘要 |
Rendering second screen information on a second screen device. A user device receives information characterizing the source of a content data stream and the content data stream; generates a watermark payload using a plurality of parameters comprising the information and a time of the user device; and inserts a watermark comprising the watermark payload into the content data stream that is rendered. The second screen device captures the watermark and extracts the watermark payload and then at least one of the plurality of parameters; generates, using the at least one extracted parameter, a request that is sent the request to a server; receives information from the server in response to the request; and displays the received information on a screen of the second screen. |
