Amit Agrawal

US Patent:

6636484, Oct 21, 2003

Filed:

Dec 9, 1998

Appl. No.:

09/208823

Inventors:

Amit Agrawal - Santa Clara CA
Madhu R. Grandhi - Fremont CA
Madhav V. Marathe - Cupertino CA

Assignee:

Cisco Technology, Inc. - San Jose CA

International Classification:

H04S 1228

US Classification:

370248

Abstract:

An asynchronous transfer mode (ATM) switch is configured to automatically generate Operations, Administration and Management (OAM) cells for a loopback test at a first connection whenever the first connection is not receiving user data traffic. The ATM switch may include a switch management module which generates the OAM cells that are transmitted from the first connection whenever a control processor initiates the loopback test.

US Patent:

7013437, Mar 14, 2006

Filed:

Jun 25, 2003

Appl. No.:

10/602734

Inventors:

Amit P. Agrawal - Fremont CA, US

Assignee:

Broadcom Corporation - Irvine CA

International Classification:

G06F 17/50

US Classification:

716 1, 716 2

Abstract:

Provided is an apparatus that includes an integrated circuit (IC) mounted on a chip carrier. The IC has one or more differential pair circuits coupled thereto and the chip carrier has a signal escaping portion and a remaining portion. The apparatus also includes differential signal lines coupled to the differential pair circuits, the differential signal lines (i) extending through the chip carrier and (ii) having first and second segments. The first segment extends through the escaping portion and the second segment extends through the remaining portion. The first and second segments have respective first and second widths.

US Patent:

7403707, Jul 22, 2008

Filed:

Jul 28, 2005

Appl. No.:

11/191681

Inventors:

Ramesh Raskar - Cambridge MA, US
Amit Agrawal - Greenbelt MD, US
Shree K. Nayar - New York NY, US
Yuanzhen Li - Cambridge MA, US

Assignee:

Mitsubishi Electric Research Laboratories, Inc. - Cambridge MA

International Classification:

G03B 7/00

US Classification:

396213, 396128, 34820799, 348297

Abstract:

A camera is configured to adaptively determine camera settings. The camera includes a plurality of sensors elements configured to acquire a current image of a scene according to a current set of camera settings. A number of sensor elements having a set of desirable properties is measured. Then, a next set of camera settings that maximize an overall number of sensor elements having the set of desirable properties is determined to acquire a next better image.

US Patent:

7443443, Oct 28, 2008

Filed:

Jul 28, 2005

Appl. No.:

11/191809

Inventors:

Ramesh Raskar - Cambridge MA, US
Amit Agrawal - Greenbelt MD, US

Assignee:

Mitsubishi Electric Research Laboratories, Inc. - Cambridge MA

International Classification:

H04N 5/222
G06K 9/40
H04N 5/238

US Classification:

348370, 3482241, 348364, 348366, 382275

Abstract:

A method and system generate an enhanced output image. A first image is acquired of a scene illuminated by a first illumination condition. A second image is acquired of the scene illuminated by a second illumination condition. First and second gradient images are determined from the first and second images. Orientations of gradients in the first and second gradient images are compared to produce a combined gradient image, and an enhanced output image is constructed from the combined gradient image.

US Patent:

7454136, Nov 18, 2008

Filed:

Jul 28, 2005

Appl. No.:

11/191877

Inventors:

Ramesh Raskar - Cambridge MA, US
Amit Agrawal - Greenbelt MD, US
Shree K. Nayar - New York NY, US
Yuanzhen Li - Cambridge MA, US

Assignee:

Mitsubishi Electric Research Laboratories, Inc. - Cambridge MA

International Classification:

G03B 15/03

US Classification:

396155, 348362, 3482221

Abstract:

A method generates a high dynamic range image by first acquiring a set of images of a scene illuminated by different lighting conditions. The set of images are then combined to generate a high dynamic range image.

US Patent:

7580620, Aug 25, 2009

Filed:

May 8, 2006

Appl. No.:

11/429694

Inventors:

Ramesh Raskar - Cambridge MA, US
Jack Tumblin - Evanston IL, US
Amit Agrawal - Cambridge MA, US

Assignee:

Mitsubishi Electric Research Laboratories, Inc. - Cambridge MA

International Classification:

G03B 17/00
H04N 5/228

US Classification:

396 55, 34820899

Abstract:

A method and system deblurs images acquired of a scene by a camera. A light field acquired of a scene is modulated temporally according to a sequence of ons and offs. An optimal coding pattern is selected. The modulated light field is integrated by a sensor of a camera during an exposure time to generate an encoded input image. The encoded input image is decoded according to a pseudo-inverse of a smearing matrix to produce a decoded output image having a reduced blur.

US Patent:

7639289, Dec 29, 2009

Filed:

Jun 12, 2007

Appl. No.:

11/761516

Inventors:

Amit Agrawal - Somerville MA, US
Ramesh Raskar - Cambridge MA, US

Assignee:

Mitsubishi Electric Research Laboratories, Inc. - Cambridge MA

International Classification:

H04N 5/262
G06K 9/40
G06K 9/32

US Classification:

348239, 382255, 382299

Abstract:

A method increases a resolution of a moving object in an image acquired of a scene by a camera. The image scene is temporally modulated according to a temporally encoding pattern, while integrating the image in a camera sensor to produce a blurred input image. The blurred input image is resolved according to the temporally encoding pattern to produce an enhanced and deblurred output image in which the object has an increased resolution.

US Patent:

7780364, Aug 24, 2010

Filed:

May 1, 2008

Appl. No.:

12/113359

Inventors:

Ramesh Raskar - Cambridge MA, US
Cyrus A. Wilson - Mountain View CA, US
Amit K. Agrawal - Somerville MA, US

Assignee:

Mitsubishi Electric Research Laboratories, Inc. - Cambridge MA

International Classification:

G03B 7/00
G03B 9/02

US Classification:

396505, 396241

Abstract:

Glare is reduced by acquiring an input image with a camera having a lens and a sensor, in which a pin-hole mask is placed in close proximity to the sensor. The mask localizes the glare at readily identifiable pixels, which can then be filtered to produce a glare reduce output image.