The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 17, 2009
Filed:
Aug. 04, 2005
M. Kivanc Mihcak, Redmond, WA (US);
Yuqun Chen, Bellevue, WA (US);
Mariusz Jakubowski, Bellevue, WA (US);
M. Kivanc Mihcak, Redmond, WA (US);
Yuqun Chen, Bellevue, WA (US);
Mariusz Jakubowski, Bellevue, WA (US);
Microsoft Corporation, Redmond, WA (US);
Abstract
Systems and methods are described that apply a watermark to data, such as data representing an image. In one implementation, the complexity of the image is measured. A quantization step size is calculated, based in part on the measured complexity of the image. A watermark or message is embedded into the image using the quantization step sizes derived for each coefficient of interest. In a further implementation, a mark decoding system is configured to extract the embedded message from the image data.