Paul Y Chang

US Patent:

6556724, Apr 29, 2003

Filed:

Nov 24, 1999

Appl. No.:

09/449112

Inventors:

Paul Joseph Chang - Allison Park PA
John C. Huffman - Menlo Park CA
Bradford V. Hebert - Piedmont CA

Assignee:

Stentor Inc. - Brisbane CA
University of Pittsburgh - Pittsburgh PA

International Classification:

G06K 954

US Classification:

382299, 382305, 382298, 382128, 345 12, 345 33, 348 1412, 707526, 707516

Abstract:

An image collaboration system conducts resolution independent image collaboration among a host computer and participating client computers. The subject of the image collaboration involves at least one source image. The source image is transformed into a hierarchical representation, such that each level of the hierarchical representation is sufficient to reconstruct the source image at a given resolution. The host computer displays, at a first resolution, an image based on one or more of the source images. To conduct the resolution independent image collaboration, the host computer generates a resolution independent description of the image, which describes the first display image relative to the source image, and broadcasts the resolution independent description of the image to the participating clients. In response, the participating clients generate an image from the resolution independent description of the image at the host computer at a resolution sufficient for display at the participating clients. Resolution independent image collaboration for use in a medical informatics system is also disclosed.

US Patent:

6711297, Mar 23, 2004

Filed:

Jun 23, 1999

Appl. No.:

09/339077

Inventors:

Paul Joseph Chang - Allison Park PA
Carlos A. Bentancourt - Pittsburgh PA

Assignee:

University of Pittsburgh - of the Commonwealth System of Higher Education - Pittsburgh PA

International Classification:

G06K 936

US Classification:

382240, 382232, 382233

Abstract:

A dynamic transfer syntax efficiently transfers data, including large data images, from a server to at least one client. Source data is transformed into a hierarchical representation. The hierarchical representation, consisting of essentially non-redundant data, is a plurality of levels of transform data, such that a level of the hierarchical representation comprises transform data sufficient to reconstruct the source data at a resolution corresponding to the level. The server transfers transform data from a level of the hierarchical representation corresponding to a desired resolution. To render a new view of the source image at the client, the client requests from the server coefficients of the transform data necessary to reconstruct the new view. In response to the request, the server transfers to the client the additional transform data, and the client reconstructs the new view from the coefficients transferred. A medical imaging application for the dynamic transfer syntax is disclosed.

US Patent:

6734880, May 11, 2004

Filed:

Nov 24, 1999

Appl. No.:

09/449115

Inventors:

Paul Joseph Chang - Allison Park PA
Bradford V. Hebert - Piedmont CA
Benjamin J. McCurtain - San Francisco CA

Assignee:

Stentor, Inc. - Brisbane CA
University of Pittsburgh of the Commonwealth Sytem of Higher Education - Pittsburgh PA

International Classification:

G09G 500

US Classification:

345738, 345735, 345730, 345732, 345800, 345786, 345788

Abstract:

A user interface for a medical informatics system, which permits a physician to work with digitized medical images in a manner that the physician is accustomed to working with traditional analog film, is disclosed. The user interface includes a through a patient browser view to provide the ability to select studies, which consist of medical images and series, for patients. After selecting the studies, the user, through a patient canvas view, may then organize the studies as well as the images/series within the studies, including resizing the studies and the images/series within a study. The user may also pan and zoom images to view portions of an image at various resolutions. Furthermore, the user of the user interface may analyze the image by selecting to view the image in detail in a large floating window.

US Patent:

6938211, Aug 30, 2005

Filed:

Nov 24, 1999

Appl. No.:

09/449015

Inventors:

Paul Joseph Chang - Allison Park PA, US
John C. Huffman - Menlo Park CA, US
Benjamin J. McCurtain - San Francisco CA, US
Jonathan Reis - Los Gatos CA, US
Bradford V. Hebert - Piedmont CA, US

Assignee:

University of Pittsburgh of the Common Wealth System of Higher Education - Pittsburgh PA
Stentor, Inc. - Brisbane CA

International Classification:

G09G005/00

US Classification:

715733, 715744, 715748, 709203

Abstract:

An image transfer object is disclosed that provides the necessary mechanism to conduct a dynamic transfer operation. The image transfer object includes a static reference to dynamic data. The image data is “dynamic”, in that the user may request additional views of the image. An image recipient computer receives the static reference to identify a source image on a server, and generates a first request, based on the static reference, for a view of the source image to the server. In response, the server transmits data to the image recipient computer. The image recipient computer displays the first view of the source image for viewing by the user. The user may then select a different portion of the source image, and/or a different resolution to designate a second view of the source image. The image recipient computer generates a second request to the image server for the second view, and the image server transmits additional data to generate the second view of the source image. Thereafter, the second view of the source image is displayed at the image recipient computer.

US Patent:

7280702, Oct 9, 2007

Filed:

Mar 22, 2004

Appl. No.:

10/806746

Inventors:

Paul Joseph Chang - Allison Park PA, US
Carlos A. Bentancourt - Pittsburgh PA, US

Assignee:

Koninklijke Philips Electronics N.V. - Eindhoven

International Classification:

G06K 9/36

US Classification:

382240, 382232, 382233

Abstract:

A dynamic transfer syntax efficiently transfers data, including large data images, from a server to at least one client. Source data is transformed into a hierarchical representation. The hierarchical representation, consisting of essentially non-redundant data, is a plurality of levels of transform data, such that a level of the hierarchical representation comprises transform data sufficient to reconstruct the source data at a resolution corresponding to the level. The server transfers transform data from a level of the hierarchical representation corresponding to a desired resolution. To render a new view of the source image at the client, the client requests from the server coefficients of the transform data necessary to reconstruct the new view. In response to the request, the server transfers to the client the additional transform data, and the client reconstructs the new view from the coefficients transferred. A medical imaging application for the dynamic transfer syntax is disclosed.

US Patent:

D685571, Jul 9, 2013

Filed:

Jan 4, 2013

Appl. No.:

29/441367

Inventors:

- Seoul, KR
Paul T Chang - Washington PA, US

Assignee:

Korea Information & Communications Co., Ltd. - Seoul

International Classification:

0301

US Classification:

D 3218

US Patent:

58176586, Oct 6, 1998

Filed:

Jun 24, 1997

Appl. No.:

8/881296

Inventors:

Peter K. S. Siegl - Blue Bell PA
Allan I. Goldberg - North Wales PA
Michael R. Goldberg - Plymouth Meeting PA
Paul I. Chang - Doylestown PA

Assignee:

Merck & Company, Inc. - Rahway NJ

International Classification:

A61K 3155

US Classification:

514221

Abstract:

A method for the treatment of Meniere's disease comprising the administration of a medicament which modulates the IKs channel of the ear and thereby reducing endolymph production.

US Patent:

62010026, Mar 13, 2001

Filed:

Jan 6, 1998

Appl. No.:

9/003159

Inventors:

Polly A. Beere - Lahaska PA
Paul I. Chang - Doylestown PA
Bertram Pitt - Ann Arbor MI
Eva J. Rucinska - Blue Bell PA
Robert Segal - Gwynedd Valley PA
Divakar Sharma - Hatfield PA
Duane B. Snavely - Chalfont PA

Assignee:

Merck & Co., Inc. - Rahway NJ

International Classification:

A01N 4350

US Classification:

514397

Abstract:

Angiotensin II receptor antagonists are useful in reducing and preventing mortality and sudden cardiac death in symptomatic heart failure patients. Losartan potassium has been shown to reduce mortality and sudden cardiac death in this patient population. Additionally, losartan potassium has been shown to reduce the need for hospitalization of symptomatic heart failure patients.