DR. KHANH TUNG NGUYEN, M.D.
Osteopathic Medicine in Austin, TX

6839055, Jan 4, 2005

Jan 25, 2000

09/491071

Khanh T. Nguyen - Austin TX, US

Dell Products L.P. - Round Rock TX

G09G 500

345204, 345904, 348192, 348466, 714 43, 714 48, 714746, 714754

A system for providing an error indication of video data received from a first link of a data interface between a computer system video controller and a display system and for providing the error indication to the video controller from the display system via a second link of the data interface. Such a system can be utilized to determine if an error condition exits in the video data path between the video controller and display system. In one example, the data interface conforms to the Digital Visual Interface (DVI) specification. A diagnostic routine of an operating system can be utilized to generate a set of test video data and compare the generated error indication with a standard error indication to determined an error condition. Also, such a system allows a remote system to request a test of the video data path. In one embodiment, the error indication is provided to the video controller from the display system by inserting the error indication into a display information data structure such as, e. g.

2003009, May 15, 2003

Nov 15, 2001

09/998402

Kenneth Banning - Austin TX, US
Tai Cao - Austin TX, US
Khanh Nguyen - Austin TX, US

International Business Machines Corporation - Armonk NY

H04L009/32

713/202000

A method and system for authorizing access to networked information using a graphically based password. In one embodiment, access to a restricted document is granted only after the user has demonstrated its authority to access the information by identifying a previously determined sequence of graphical images. If the user identifies the correct images, the user is granted access to the restricted information. In one embodiment, the graphical images may be presented to the user as a sequence of web pages where each page has multiple graphical images (icons). On each page in the sequence, the user selects (such as by clicking) the correct icon. The icon may be implemented as a link to the next web page in the password sequence. As each page is presented, the user clicks the correct icon thereby generating a sequence of accessed web pages. The server then verifies the user as an authorized user by comparing the sequence of web pages visited by the user to a predetermined sequence. In this manner, the password enabling a user to access confidential information comprises a sequence of web pages visited by the user. The graphically based password information may be supplemented with user identification information that is either entered by the user or provided by the user as cookie information. In this embodiment, the server may grant various levels of access based on the combination of the user identification information and the graphically entered password.

2003007, Apr 17, 2003

Oct 11, 2001

09/974982

Kenneth Banning - Austin TX, US
Tai Cao - Austin TX, US
Khanh Nguyen - Austin TX, US

International Business Machines Corporation - Armonk NY

G06F015/16

709/229000, 709/203000

A server system and method in which the server determines whether a requesting client is accessing a requested document or page in a manner contemplated by the server. The server may first determine whether the client has direct access authority such as by interpreting cookie information supplied with the client request. The client may obtain direct access authority if the client has previously accessed server documents in a prescribed manner. If the client lacks direct access, the server may determine if the client has been referred or quoted to the requested page by a third party server or referrer that has authority to refer clients to the requested page. The server device may maintain a table of information in its storage to facilitate the determination of which referring parties have authority to which documents on the server. If the server determines that a particular request lacks both direct access authority and indirect authority, the server may return a version of the requested document (the unauthorized version) that indicates the lack of authority. The server may generate the unauthorized version of a document from the authorized version by executing a script to insert text or otherwise change the appearance of the returned document.