Jason M Levin

US Patent:

8392000, Mar 5, 2013

Filed:

Jun 7, 2010

Appl. No.:

12/795273

Inventors:

Jason Levin - Solana Beach CA, US
Petros Ioannou - Palos Verdes Estates CA, US

Assignee:

University of Southern California - Los Angeles CA

International Classification:

G06F 19/00

US Classification:

700 37, 455 73

Abstract:

The control of flexible systems is often difficult due to the exact frequencies of the elastic modes being hard to identify. These flexible modes may change over time, or vary between units of the same system. The variation in the modal dynamics may cause a degradation in performance or even instabilities unless compensated for by the control scheme. Controllers designed for these types of systems use notch filters for mode suppression. However variation in the parameters of the flexible modes may cause the need for wide notch filters. An adaptive scheme is proposed which uses an online estimator based on plant parameterization. The scheme may not use probe signals and may not rely on exact parameter identification of the unknown parameters. Instead it may continuously update itself to cancel the effect of the flexible modes by been able to identify the effect of the modal dynamics on the performance of the system. The adaptive notch filter can be designed narrower, adding less phase lag at lower frequencies, thereby allowing an increase in bandwidth and disturbance rejection capability.

US Patent:

20050072840, Apr 7, 2005

Filed:

Jun 14, 2004

Appl. No.:

10/868200

Inventors:

Jason Levin - Carlsbad CA, US
Larry Garcia - Santee CA, US

International Classification:

B65D043/00
B65D053/00

US Classification:

229124000

Abstract:

A unified transport and display mechanism is particularly suited for transporting and displaying buckets and items within buckets. The items include, but are not limited to, flowers or other plant specimens. The mechanism includes a container and a lid for covering the container. The lid includes one or more perforated areas, the removal of which forms one or more corresponding apertures. Each aperture is sized and adapted for receiving an item such as a bucket in a display mode. When received, the bucket extends into the aperture at a level below a top surface of the lid, and partially extends above the lid top surface to allow visual access to the items.

US Patent:

20060064314, Mar 23, 2006

Filed:

Sep 12, 2005

Appl. No.:

11/225382

Inventors:

Jason Levin - Carlsbad CA, US
David Levin - Aruada CO, US

International Classification:

G06Q 99/00

US Classification:

705001000

Abstract:

A graphical user interface for a floral merchandising system. The graphical user interface includes a selection bar having one or more floral product tabs, each floral product tab representing one of a number of floral products. The graphical user interface further includes one or more user-selectable item buttons, each item button corresponding to one of the number of floral products, and one or more windows for displaying information about one of the number of floral products according to a user selection.

US Patent:

D604606, Nov 24, 2009

Filed:

May 30, 2008

Appl. No.:

29/318908

Inventors:

Jason J. Levin - Carlsbad CA, US

Assignee:

Gringo Ventures, LLC - Vista CA

International Classification:

0903

US Classification:

D 9432