LLOYD JEFFERY LEWINS
Pilots at Via Dolce, Venice, CA

License number
California A5290831
Issued Date
Jan 2016
Expiration Date
Jan 2018
Category
Airmen
Type
Authorized Aircraft Instructor
Address
Address
4250 Via Dolce APT 220, Venice, CA 90292

Professional information

Lloyd Lewins Photo 1

Probability Weighted Centroid Tracker

US Patent:
6895102, May 17, 2005
Filed:
Jun 29, 2001
Appl. No.:
09/895957
Inventors:
Lloyd J. Lewins - Marina Del Rey CA, US
Julie R. Schacht - Redondo Beach CA, US
John E. Albus - Granada Hills CA, US
Gillian K. Groves - Torrance CA, US
Assignee:
Raytheon Company - Waltham MA
International Classification:
G06K009/00, H04N005/225
US Classification:
382103, 382288, 348172
Abstract:
In accordance with one aspect of the present invention, a system for tracking a target is provided that includes an image sensor mounted to a gimbal for acquiring an image, wherein the image includes a plurality of pixels representing the target and a background. The system further includes a motor for rotating the gimbal and an autotracker electrically coupled to the image sensor and the motor. The autotracker includes a probability map generator for computing a probability that each of the plurality of pixels having a particular intensity is either a portion of the target or a portion of the background, a pixel processor in communicative relation with the probability map generator for calculating a centroid of the target based upon the probabilities computed by the probability map generator, and a controller in communicative relation with the pixel processor for generating commands to the motor based upon the centroid.


Lloyd Lewins Photo 2

Means Of Control For Reconfigurable Computers

US Patent:
2009011, Apr 30, 2009
Filed:
Oct 31, 2007
Appl. No.:
11/981161
Inventors:
Lloyd J. Lewins - Marina Del Rey CA, US
William D. Farwell - Thousand Oaks CA, US
Kenneth E. Prager - Granlte Bay CA, US
Michael D. Vahey - Manhattan Beach CA, US
International Classification:
G06F 13/00
US Classification:
710 17
Abstract:
A data flow controller for reconfigurable computers. The novel data flow controller includes a first circuit for selecting one of a plurality of operating conditions and a second circuit for determining if the selected condition is met and outputting a control signal accordingly. In an illustrative embodiment, the operating conditions include: when all enabled data available signals are asserted and all enabled space available signals are asserted; when any enabled data available signal is asserted and all enabled space available signals are asserted; when all enabled data available signals are asserted and any enabled space available signal is asserted; and when any enabled data available signal is asserted and any enabled space available signal is asserted. By allowing a configurable element to operate under different possible conditions, data flow signals can also then be used to control what operation the element performs, in addition to controlling when.


Lloyd Lewins Photo 3

Systems And Methods For Producing High-Contrast, Intensity Equalized Visible Images

US Patent:
5640469, Jun 17, 1997
Filed:
Sep 28, 1989
Appl. No.:
7/415048
Inventors:
Lloyd J. Lewins - Marina Del Rey CA
Peter V. Messina - Santa Monica CA
Assignee:
Hughes Electronics - Los Angeles CA
International Classification:
G06K 940
US Classification:
382274
Abstract:
Systems and methods for improving the intensity equalization of image data obtained with systems that perceive images with energy sources other than visible light includes a sensor for such data; a converter for transforming the image data from analog form to digital form; a converter for transforming the digital data into black-and-white images containing a predetermined, desired number of gray shades; an intensity equalizer that compensates for the logarithmic effect of visual images on a human eye; an intensity equalizer that compensates for the non-linear effect of the display device for the data; and a converter for transforming the digital intensity-equalized black-and-white image data into analog form for display on a device such as a conventional CRT.


Lloyd Lewins Photo 4

Heads-Up Display (Hud) Incorporating Cathode-Ray Tube Image Generator With Digital Look-Up Table For Distortion Correction

US Patent:
5302964, Apr 12, 1994
Filed:
Sep 25, 1992
Appl. No.:
7/951077
Inventors:
Lloyd J. Lewins - Marina Del Rey CA
Assignee:
Hughes Aircraft Company - Los Angeles CA
International Classification:
G09G 104
US Classification:
345 7
Abstract:
A heads-up display (50) for an aircraft includes a digital image generator (52), a cathode ray tube (CRT) (54) and an optical system (56) which projects an image (58) formed on the CRT screen (54a) indicating the status of the aircraft operation onto a holographic mirror combiner (60) at a slant angle. The combiner (60) is transparent to the pilot's direct view through the aircraft windshield, but produces a reflected image of the CRT screen (54a) which is superimposed on the direct view. Pincushion distortion in the CRT (54) and geometric distortion caused by the slant projection angle are corrected by a digital look-up table memory (82, 84) which alters the initially orthogonal CRT horizontal and vertical deflection signals (Vh,Vv) in a manner which is the inverse of the distortion such that the image (58) on the combiner (60) as viewed by the pilot appears undistorted. The size of the look-up table memory (82,84) is greatly reduced by making approximations based on analysis of the mathematical functions which define the distortion.


Lloyd Lewins Photo 5

Image Restoration And Faulty Sensor Detection And Compensation System And Process

US Patent:
5101271, Mar 31, 1992
Filed:
Mar 30, 1990
Appl. No.:
7/502345
Inventors:
Roland L. Andrews - Altadena CA
Lloyd L. Lewins - Marina Del Rey CA
Assignee:
Hughes Aircraft Company - Los Angeles CA
International Classification:
H04N 718
US Classification:
358113
Abstract:
A scene-based image restoration system, method and apparatus calculates a plurality of restoration signals to be combined with a plurality of input signals to produce resultant signals that are substantially equal during a desired time interval. These scene-based image restoration systems and methods can use DC offset signals as scene restoration signals. To enhance results, faulty sensors in the system are detected, and the input signals from them compensated to produce better video images from the signals.


Lloyd Lewins Photo 6

Pseudo Cross-Couple For Non-Linear Detectors

US Patent:
5278644, Jan 11, 1994
Filed:
Feb 3, 1992
Appl. No.:
7/830090
Inventors:
Lloyd L. Lewins - Marina Del Rey CA
Roland L. Andrews - Altadena CA
George M. Buritica - Cerritos CA
Assignee:
Hughes Aircraft Company - Los Angeles CA
International Classification:
H04N 516, H04N 533
US Classification:
358113
Abstract:
Systems for improving the quality of video images generated by a forward-looking infrared detector array include mechanisms for dynamically adjusting the output signals from one or more non-linear detectors in such an array. These systems and methods utilize the output signals from two or more detectors adjacent to each non-linear detector to provide accurate DC restoration to the signals from such non-linear detectors.