Robert M Lynch

US Patent:

7587374, Sep 8, 2009

Filed:

Mar 20, 2006

Appl. No.:

11/387080

Inventors:

Robert S. Lynch - Old Mystic CT, US
Peter K. Willett - Coventry CT, US

Assignee:

The United States of America as represented by the Secretary of the Navy - Washington DC

International Classification:

G06F 15/18

US Classification:

706 16

Abstract:

This invention is a method of training a mean-field Bayesian data reduction algorithm (BDRA) based classifier which includes using an initial training for determining the best number of levels. The Mean-Field BDRA is then retrained for each point in a target data set and training errors are calculated for each training operation. Cluster candidates are identified as those with multiple points having a common training error. Utilizing these cluster candidates and previously identified clusters as the identified target data, the clusters can be confirmed by comparing a newly calculated training error with the previously calculated common training error for the cluster. The method can be repeated until all cluster candidates are identified and tested.

US Patent:

8127138, Feb 28, 2012

Filed:

Sep 29, 2008

Appl. No.:

12/287156

Inventors:

Robert S. Lynch - Old Mystic CT, US
G. Clifford Carter - Waterford CT, US
Bijan Mobasseri - Phoenixville PA, US

Assignee:

The United States of America as represented by the Secretary of the Navy - Washington DC

International Classification:

H04L 9/32
H04L 9/00
G01S 15/00
G01S 3/80
G01R 25/00
G01R 23/00
G01R 23/16
G01R 13/00

US Classification:

713176, 380 43, 367100, 367125, 367107, 702 79, 702 75, 702 77, 702 66

Abstract:

The invention as disclosed is of a method to authenticate identify and trace sonar transmissions and echoes by embedding transparent, secure and robust digital watermarks in signal space, where the additional information incurs no cost in bandwidth. The complex short time Fourier transform is selected as the domain for embedding the digital watermark, secured by a secret key, in the time frequency representation of the signal. The watermark is designed through an iterative optimization step. This step insures that the watermarked sonar is also realizable. Selection of the time frequency region for watermarking is driven by avoidance of interference with the sonar itself, or in case of network operation, other watermarks. In addition, the selected time-frequency region remains robust to sound channel and other transmission effects. Sonar echoes are authenticated in the time-frequency plane by a correlation receiver tuned to the watermarked region using the secret key.

US Patent:

59998938, Dec 7, 1999

Filed:

May 2, 1997

Appl. No.:

8/858186

Inventors:

Robert S. Lynch - Groton CT
Peter K. Willett - Coventry CT

Assignee:

The United States of America as represented by the Secretary of the Navy - Washington DC

International Classification:

G06F10114

US Classification:

702181

Abstract:

A classification system uses sensors to obtain information from which feaes which characterized a source or object to classified can be extracted. The features are extracted from the information and compiled into a feature vector which is then quantized to one of one of M discrete symbols. After N feature vectors have been quantized, a test vector having components which are defined by the number of occurrences of each of the M symbols in N the quantized vectors is built. The system combines the test vector with training data to simultaneously estimate symbol probabilities for each class and classify the test vector using a decision rule that depends only on the training and test data. The system classifies the test vector using either a Combined Bayes test or a Combined Generalized likelihood ratio test.

US Patent:

51544130, Oct 13, 1992

Filed:

Sep 9, 1991

Appl. No.:

7/756662

Inventors:

Richard D. Boughton - Bethel CT
Joan T. Wagner - Fairfield CT
Kenneth A. Schulz - Bethel CT
Robert D. Lynch - Oxford CT
Joseph H. Marzullo - Brookfield CT

Assignee:

Pitney Bowes Inc. - Stamford CT

International Classification:

B65H 916

US Classification:

271248

Abstract:

An accessing guide in combination with the paper path of a deck for transporting paper documents. The combination includes: a deck for supporting and transporting paper documents seriatim; and an adjustable side guide mounted on the deck for movement perpendicular to the direction of the paper path for guiding the flow of documents along the deck. The guide has a pivotable rail which can pivot away from the paper path in order to allow access to the paper path by an operator.