Patent ID: 7920702
Filing Date: 2011-04-05
Classification: G06F,G09G

Abstract:
1. A method for generating a signature for an end user device, the end user device comprising at least video display hardware and video display software, the method comprising: processing video data by the video display hardware and the video display software, thereby altering at least a portion of the video data according to a characteristic of at least one of the video display hardware and the video display software to form altered data, wherein said processing video data comprises generating pixel values for said video data, and wherein said altering at least a portion of the video data during processing comprises altering at least a portion of said pixel values; forming the signature at the end user device based, at least in part, on said altered data; generating a user profile for said end user device using said signature; and transmitting said user profile to a headend for use in uniquely protecting content to be sent to said end user device.