Alfred V Aho

US Patent:

7971255, Jun 28, 2011

Filed:

Jul 14, 2005

Appl. No.:

11/181165

Inventors:

Gaurav S. Kc - Mountain View CA, US
Alfred V. Aho - Chatham NJ, US

Assignee:

The Trustees of Columbia University in the City of New York - New York NY

International Classification:

G06F 11/00
G06F 12/14
G06F 12/16
G08B 23/00

US Classification:

726 24, 713164, 713188, 726 25

Abstract:

A system for detecting and halting execution of malicious code includes a kernel-based system call interposition mechanism and a libc function interception mechanism. The kernel-based system call interposition mechanism detects a system call request from an application, determines a memory region from which the system call request emanates, and halts execution of the code responsible for the call request if the memory region from which the system call request emanates is a data memory region. The libc function interception mechanism maintains an alternative wrapper function for each of the relevant standard libc routines, intercepts a call from an application to one or more libc routines and redirects the call into the corresponding alternative wrapper function.

US Patent:

20110289586, Nov 24, 2011

Filed:

Jun 3, 2011

Appl. No.:

13/152627

Inventors:

Gaurav S. Kc - Mountain View CA, US
Alfred V. Aho - Chatham NJ, US

International Classification:

G06F 11/00

US Classification:

726 24

Abstract:

A system for detecting and halting execution of malicious code includes a kernel-based system call interposition mechanism and a libc function interception mechanism. The kernel-based system call interposition mechanism detects a system call request from an application, determines a memory region from which the system call request emanates, and halts execution of the code responsible for the call request if the memory region from which the system call request emanates is a data memory region. The libc function interception mechanism maintains an alternative wrapper function for each of the relevant standard libc routines, intercepts a call from an application to one or more libc routines and redirects the call into the corresponding alternative wrapper function.

US Patent:

6198941, Mar 6, 2001

Filed:

Aug 7, 1998

Appl. No.:

9/130979

Inventors:

Alfred Vaino Aho - Chatham NJ
Richard Dennis Gitlin - Little Silver NJ
Ramachandran Ramjee - Matawan NJ
Thomas Yat Chung Woo - Red Bank NJ

Assignee:

Lucent Technologies Inc. - Murray Hill NJ

International Classification:

H04B 138

US Classification:

455552

Abstract:

A method of effectuating a change in the operation of a portable communication device such as a laptop or palmtop computer, a personal digital assistant (PDA), or a cellular telephone. The device can communicate with a remote host or server using one of two or more different communication arrangements. Various signals indicative of the environment in which the device is operating are monitored, to anticipate or predict a change or transition from one communication arrangement to the other. If the change is determined to be both imminent and significant, the operation change is effected substantially simultaneously, by changing parameters in the transport and/or application protocol layer in the device.

US Patent:

62560433, Jul 3, 2001

Filed:

Sep 26, 1997

Appl. No.:

8/938304

Inventors:

Alfred Vaino Aho - Chatham NJ
Sudhir Raman Ahuja - Little Silver NJ
Gianpaolo U. Carraro - Red Bank NJ
James Robert Ensor - Red Bank NJ
Eugene J. Rosenthal - Edison NJ

Assignee:

Lucent Technologies Inc. - Murray Hill NJ

International Classification:

G06T 1100

US Classification:

345433

Abstract:

For a world that has a portion of the world distant from the point of view of the user represented in only two dimensions as a video on a video screen, when an object on the video screen undergoes a trajectory that takes at least a portion of it to a location in the world that is not represented by the video but instead is a location in the world that is represented by computer graphics, in addition to being able to continue to see such an object when it is rendered as computer graphics in the computer graphics part of the world, i. e. , popped out from the video, one is able to interact with such an object. Thus, an object which pops out from a video into the computer graphics part of the world may be "investigated" by a viewer of the world. For example, the user could enter a store which popped out of the video, and engage in virtual shopping therein. The particular store which is actually entered may be customized on a per user basis, e. g.