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:
Jul. 26, 2011
Filed:
Nov. 12, 2008
Turgut Aytur, Irvine, CA (US);
Frederic Battaglia, Irvine, CA (US);
Saurabh Garg, Irvine, CA (US);
Batuhan Okur, Irvine, CA (US);
Ping-wen Ong, Irvine, CA (US);
Venkatesh Rajendran, Irvine, CA (US);
Turgut Aytur, Irvine, CA (US);
Frederic Battaglia, Irvine, CA (US);
Saurabh Garg, Irvine, CA (US);
Batuhan Okur, Irvine, CA (US);
Ping-Wen Ong, Irvine, CA (US);
Venkatesh Rajendran, Irvine, CA (US);
Realtek Semiconductor Corp., Hsinchu, TW;
Abstract
Certified Wireless USB 1.0 (CWUSB) defines two different types of association: cable association and numeric association. In the numeric association, the CWUSB host and device use a specific protocol to exchange the security information. At final stage of this information exchange, both host and device need to display a number asking user's feedback. Once this is done, both host and device will be able to generate the connection key as the shared secret for the following secured communication. One problem of this numeric association method is that device needs to be able to display the numbers. For certain class of device that has capability to display an image, there is a natural way to add this function to them. A method for this class of devices is described. Another kind of association, which is not defined in the CWUSB 1.0, is manual association. User needs only to manually type in the Connection Key coming from the CWUSB device. There are many ways to delivery the key, but it is very easy for device that can display an image.