Dragan M Vuletic

US Patent:

8514919, Aug 20, 2013

Filed:

Aug 25, 2010

Appl. No.:

13/126127

Inventors:

Anthony J. Estrada - San Diego CA, US
Dana C. Ford - Santee CA, US
Tae S. Kim - San Diego CA, US
Robert W. Lowdermilk - San Diego CA, US
Dragan Vuletic - San Diego CA, US

Assignee:

BAE Systems National Security Solutions Inc. - San Diego CA

International Classification:

H04B 17/00

US Classification:

375224, 375228, 375340, 4552261, 324 7614, 324 7619, 324 762, 324 7621, 324 7622, 324 7623, 324 7624, 324 7625, 324 7626, 324318, 324510, 702 66, 702 70, 702 75, 702 76

Abstract:

Systems and other embodiments associated with synthetic instrumentation are presented. A reconfigurable synthetic instrumentation unit comprises an input module, with dual input/output ports and conditioning logic to condition an input signal. An RF down converter selectively down converts the conditioned input signal. A sampled RF down converter selectively samples the conditioned input signal. A pair of narrowband A/D converters are configured to convert one of the conditioned signal, the down converted signal and the sampled signal to produce a narrowband digital signal. A pair of broadband A/D converters convert at least one of the conditioned signal, the down converted signal and the sampled signal to produce a broadband digital signal. Signal processing logic selectively performs digital signal processing on the broadband digital signal or the narrow band digital signal.

US Patent:

20020085117, Jul 4, 2002

Filed:

Jun 25, 2001

Appl. No.:

09/892215

Inventors:

Frederic Harris - Lemon Grove CA, US
Robert Lowdermilk - San Diego CA, US
Dragan Vuletic - San Diego CA, US

International Classification:

H04N007/08

US Classification:

348/473000, 348/486000

Abstract:

A method and system for sending and receiving binary bit stream in a composite video signal, such as a NTSC signal. The binary bit stream is modulated according to quadrature amplitude modulation, converted to analog and translated to an intermediate frequency relative to the composite video signal and the associated sync pulses, and combined with the composite video signal. At reception of a composite video signal that includes the modulated bit stream, the sync pulses of the composite video signal are determined by extracting the composite video signal from the modulated bit stream. Also, the modulated bit stream is extracted from the composite video signal, separated into its component parts based on the sync pulses, and combined into a binary bit stream.

US Patent:

20110206163, Aug 25, 2011

Filed:

Aug 30, 2010

Appl. No.:

13/126876

Inventors:

Robert W. Lowdermilk - San Diego CA, US
Dragan Vuletic - San Diego CA, US
Fredric J. Harris - Lemon Grove CA, US
Michael Tammen - San Diego CA, US

Assignee:

BAE SYSTEMS NATIONAL SECURITY SOLUTIONS INC. - San Diego CA

International Classification:

H04L 27/00

US Classification:

375316

Abstract:

Methods, systems and other embodiments associated with pre-processing a signal for spectral analysis are presented. A system for pre-processing a digital input signal includes a digital down converter (DDC), an interpolator, and a series of down samplers. The DDC modulates the digital input signal to create a down converted signal. The interpolator re-samples the down converted signal to produce a re-sampled signal. The series of down samplers produces down sampled signals. The multiplexer selects one of the digital input signal, the down converted signal, and the down sampled signals and routes the selected signal to an output line.

US Patent:

20130013262, Jan 10, 2013

Filed:

Jul 5, 2011

Appl. No.:

13/176102

Inventors:

Alexis B. Allegra - La Jolla CA, US
Robert W. Lowdermilk - San Diego CA, US
Dragan Vuletic - San Diego CA, US
Fredric J. Harris - Lemon Grove CA, US

Assignee:

BAE SYSTEMS NATIONAL SECURITY SOLUTIONS INC. - San Diego CA

International Classification:

G06F 15/00
G06F 17/10

US Classification:

702190, 708300

Abstract:

A system and method for filtering an input signal with at least a first and a second octave portions is presented. A proportional bandwidth filter system includes a bandwidth reducing filter, a down-sampler, and first and second octave filters. The bandwidth reducing filter reduces the bandwidth of the input signal and the down-sampler rolls the second octave portion represented in the reduced bandwidth signal to a top octave portion of a down-sampled signal. The first and second octave filters are comprised of a plurality of proportional bandwidth filters. The first octave filter partitions and converts the first octave portion of the input signal into output signals representing the frequency spectra of the first octave of the input signal. Similarly, the second octave filter generates outputs representing the spectra of the second octave portion of the input signal represented as the top octave portion of a down-sampled signal.

US Patent:

7071994, Jul 4, 2006

Filed:

Jul 19, 2001

Appl. No.:

09/909760

Inventors:

Frederic Joel Harris - Lemon Grove CA, US
Robert W. Lowdermilk - San Diego CA, US
Dragan Vuletic - San Diego CA, US
Steven C. Weiss - San Jose CA, US

Assignee:

Telisar Corporation - San Mateo CA

International Classification:

H04N 7/08

US Classification:

348473

Abstract:

A method and system for sending and receiving binary bit stream in a composite video signal, such as a NTSC signal. The binary bit stream is modulated according to quadrature amplitude modulation, converted to analog and translated to an intermediate frequency relative to the composite video signal and the associated sync pulses, and combined with the composite video signal. At reception of a composite video signal that includes the modulated bit stream, the sync pulses of the composite video signal are determined by extracting the composite video signal from the modulated bit stream. Also, the modulated bit stream is extracted from the composite video signal, separated into its component parts based on the sync pulses, and combined into a binary bit stream.