Feng Lin

US Patent:

6591808, Jul 15, 2003

Filed:

Oct 1, 2001

Appl. No.:

09/967118

Inventors:

Feng Lin - Troy MI
Alexander T Zaremba - Dearborn Heights MI
Bader Badreddine - Dearborn MI
Jing Sun - Bloomfield Township MI

Assignee:

Ford Global Technologies, LLC - Dearborn MI

International Classification:

F02D 3100

US Classification:

123352, 123436, 12333921, 1231921, 701110, 701111

Abstract:

Within both a method for operating an internal combustion engine and a system for operating the internal combustion engine there is provided an engine rotation speed pulsation damping within the internal combustion engine through use of a PID controller which varies a single PID control parameter, particularly, K to provide the engine rotation speed pulsation damping within the internal combustion engine. Within both the method and the system there is also provided a pair of control algorithms for use within the PID controller such as to effect the desired engine rotation speed pulsation damping when operating the internal combustion engine.

US Patent:

6699189, Mar 2, 2004

Filed:

Dec 26, 2001

Appl. No.:

10/025817

Inventors:

Feng Lin - Waukesha WI
Robert C. Waag - Rochester NY

Assignee:

University of Rochester - Rochester NY

International Classification:

A61B 800

US Classification:

600437

Abstract:

Aberrations in ultrasound imaging are modeled as a linear filter bank. The response of each linear filter is determined through blind system identification and is used to correct the aberration by applying a predistortion to the transmit signals and a compensation to the receive signals. To reduce computation, the blind system identification can be done through multiple levels. In a two-level implementation, the transducers in the array are grouped into subapertures. The blind system identification is applied in each of the subapertures to obtain the first-level response to each element. Using these responses, a common input is found for each subaperture, and blind system identification is applied to find the second-level responses. From the first-level and second-level responses, the response at each filter in the bank is determined.

US Patent:

6827685, Dec 7, 2004

Filed:

Dec 31, 2002

Appl. No.:

10/335277

Inventors:

Feng Lin - Waukesha WI
Satchi Panda - Greenfield WI
Richard Yung Chiao - Menomonee Falls WI

Assignee:

General Electric Company - Schenectady NY

International Classification:

A61B 800

US Classification:

600437

Abstract:

A method and apparatus for smoothing speckle pattern and increasing contrast resolution in ultrasound images is provided. Compared to other frequency compounding techniques, wide-band harmonic frequency compounding reduces speckle noise without sacrificing the resolution. Compared to spatial compounding, wide-band harmonic frequency compounding is more robust against tissue motion because sequential vectors rather than frames are summed together for compounding. The method and apparatus is implemented by transmitting two or more firings, combining two or more of the firings coherently to extract the tissue-generated harmonic components, detecting the outputs of the coherent sums and detecting one or more firings before coherent sum, and finally combining all detected outputs to form the compounded image. The method and apparatus sums wide-band fundamental and wide-band harmonic images after detection to form a compounded image. Unlike other frequency compounding methods, both transmit and receive signals are wide-band and no narrow-band filters are necessary.

US Patent:

7338448, Mar 4, 2008

Filed:

Nov 7, 2003

Appl. No.:

10/703903

Inventors:

Xiaohui Hao - Waukesha WI, US
Feng Lin - Waukesha WI, US
Richard Yung Chiao - Menomonee Falls WI, US

Assignee:

GE Medical Systems Global Technology Company, LLC - Waukesha WI

International Classification:

A61B 8/00

US Classification:

600443

Abstract:

Certain embodiments include a system and method for improved compound imaging using a plurality of imaging modes. In an embodiment, a plurality of echo signals are received in response to a plurality of beams formed based on different imaging modes corresponding to different steering angles, such as steered or non-steered angles. The plurality of echo signals is compounded to form a compound image. In an embodiment, the imaging mode includes at least one of harmonic, fundamental, coded harmonic, and variable frequency imaging. Parameters may be generated for the plurality of beams formed based on different imaging modes corresponding to different steering angles. Additionally, the parameters may be stored. The echo signals may be filtered. Imaging mode may be controlled based on steering angle.

US Patent:

7632229, Dec 15, 2009

Filed:

Aug 9, 2004

Appl. No.:

10/914326

Inventors:

Michael Joseph Washburn - Brookfield WI, US
Feng Lin - Waukesha WI, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

A61B 8/00
A61B 8/12
A61B 8/14

US Classification:

600437, 600441, 600443, 73584, 73587, 73596, 73609, 73618, 73620, 73627, 73631, 73645

Abstract:

A system and method for range dependent weighting in ultrasound imaging. The system includes a transducer array, a data acquisition system, and an imaging processor. The transducer array receives a first ultrasound beam having a first focal depth. The data acquisition system receives a first ultrasound imaging signal from the array. The first signal includes first image data based on at least the first ultrasound beam. The imaging processor combines a first data contribution from the first image data with at least second image data from a second ultrasound imaging signal to create a spatially compounded image. The first data contribution is based on at least the focal depth of the first beam.

US Patent:

8068647, Nov 29, 2011

Filed:

Jun 14, 2005

Appl. No.:

11/152653

Inventors:

Feng Lin - Waukesha WI, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

G06K 9/00

US Classification:

382128

Abstract:

Certain embodiments of the present invention provide a method and system for real-time motion correction in compound ultrasound imaging. Certain embodiments include receiving an image frame, estimating motion between the image frame and a previous image frame, updating a previous motion estimate with the estimated motion to form an updated motion estimate, and correcting the image frame and the previous image frame using the updated motion estimate. The method may also include forming a compound image from the image frames. In an embodiment, motion may be estimated between the image frame and a previous frame using cross correlation, reference point registration, and/or other estimation method, for example. The image frame and the previous image frame may be corrected using the updated motion estimate in an affine transformation or other correction method, for example. In an embodiment, the method provides real-time correction as image frames are being received.

US Patent:

8197407, Jun 12, 2012

Filed:

Mar 10, 2008

Appl. No.:

12/045434

Inventors:

Lihong Pan - Brookfield WI, US
Feng Lin - Niskayuna NY, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

A61B 8/00

US Classification:

600437, 600443, 600458

Abstract:

A non-linear response may be measured by transmitting a first pulse at an amplitude and transmit frequency, using an aperture having N elements. A first response is measured at a sub-harmonic frequency based on the transmit frequency. At least second and third pulses are transmitted at the amplitude and transmit frequency. At least second and third responses are measured at the sub-harmonic frequency. The second and third pulses have the same phase with respect to each other and use first and second sub-apertures that have different ones of the N elements. A sum of the elements within the first and second sub-apertures is equal to N. Alternatively, at least two pulses having the same aperture and different amplitudes may be transmitted, and the responses measured at the sub-harmonic frequency. The responses are combined to suppress linear echoes and determine a non-linear response.

US Patent:

20060058670, Mar 16, 2006

Filed:

Aug 10, 2004

Appl. No.:

10/915177

Inventors:

Feng Lin - Waukesha WI, US
Qian Adams - New Berlin WI, US

International Classification:

A61B 8/06
A61B 8/12

US Classification:

600447000

Abstract:

A method and apparatus for ultrasound spatial compounding imaging with adjustable aperture controls is disclosed. The method and apparatus can improve the image quality of all frames by applying different aperture controls on each frame of the spatially compounded image. One or both of transmit and receive aperture controls may include preventing some element of the transducer array from transmitting or receiving, calculating weighting apodizations to combine with standard apodizations for each frame, or determining an aperture size based on an f-number for the transducer array for each frame.