John Chih Yeh Chen

US Patent:

6421794, Jul 16, 2002

Filed:

Mar 9, 2000

Appl. No.:

09/522279

Inventors:

John T. Chen - Pittsburgh PA 15232
Janusz Rajski - West Linn OR 97068-2847

International Classification:

H04L 122

US Classification:

714 42, 714733

Abstract:

A method and apparatus for diagnosing memory using selfâtesting circuits. A comparator compares actual data output from a RAM with expected output generated by builtâin selfâtesting (BIST) circuitry. The comparator outputs a resulting initial fail vector which is subsequently input into a compressor. The compressor performs multiple logical operations on the initial fail vector to compress or reduce the bitâwidth of the initial fail vector, resulting in a compressed fail vector. Once generated, the compressed fail vector is fed to I/O terminals of the integrated circuit (IC) forming a stream of bits to be recorded by test equipment external to the IC. The recorded compressed fail vector is then utilized to reconstruct the initial fail vector that was generated by the bit comparator.

US Patent:

6685718, Feb 3, 2004

Filed:

Jul 31, 2000

Appl. No.:

09/629771

Inventors:

Mark H. Wyzgala - Bellevue WA
Eric B. Hamilton - Bothell WA
Thomas J. Hiblar - Everett WA
Lixiao Wang - Long Lake MN
John J. Chen - Plymouth MN
Irina Nazarova - Woodbury MN
Nancy L. Haig - East Bethel MN
Sheng-Ping Zhong - Northborough MN

Assignee:

SciMed Life Systems, Inc. - Maple Grove MN

International Classification:

A61B 1732

US Classification:

606170, 606180

Abstract:

An atherectomy burr has an operating diameter that is larger than the diameter of a catheter in which the burr is routed. The burr may include a polymeric balloon that is coated with an abrasive and that expands when the burr is rotated. When the burr is rotated, the polymeric tube expands by centrifugal force. The maximum expansion of the burr is controlled by an expansion mechanism. Various mechanisms are disclosed for controlling the maximum diameter of the burr thus preventing the burr from over expanding. In addition, the present invention includes a system for preventing the loose ablated particulate from reembolizing in the distal vasculature. The system includes an ablation burr that has abrasive disposed on the proximal end that is pulled back toward the guide catheter to ablate the lesion. The burr creates a seal when expanded to block the ablated particulate so that the aspiration system can remove the particulate from the patient vessel or stent. Alternatively, the burr system may include a self expanding seal that is deployed out of the aspiration sheath so that a slight vacuum can remove the large loose particulate form, the patients vessel or stent.

US Patent:

7231442, Jun 12, 2007

Filed:

Mar 18, 2003

Appl. No.:

10/392196

Inventors:

John Bradley Chen - Seattle WA, US

Assignee:

Tonic Software, Inc. - Lindon UT

International Classification:

G06F 15/173

US Classification:

709224

Abstract:

A method of analyzing performance data collected in regard to a plurality of content sources on a network. A ratio of performance metrics such as a render time for retrieving and displaying images and a fetch time for retrieving a base document, or a render bandwidth and a fetch bandwidth, for different content sources, is very useful in analyzing the performance of a distributed application across the network. By comparing measurements for two or more content sources and analyzing them according to a network structure, it is possible to recognize differences in the relative performance of the content sources and to quantify one content source relative to a standard defined by the performance of the other. The analysis both determines network performance and identifies specific performance problems manifest at specific localities of the network topology.

US Patent:

7252674, Aug 7, 2007

Filed:

Feb 2, 2004

Appl. No.:

10/770336

Inventors:

Mark H. Wyzgala - Bellevue WA, US
Eric B. Hamilton - Bothell WA, US
Tom J. Hiblar - Everett WA, US
Lixiao Wang - Long Lake MN, US
John J. Chen - Plymouth MN, US
Irina Nazarova - Woodbury MN, US
Nancy L. Haig - East Bethel MN, US
Sheng-Ping Zhong - Northborough MA, US

Assignee:

Boston Scientific Scimed, Inc. - Maple Grove MN

International Classification:

A61B 17/32

US Classification:

606170, 606180

Abstract:

An atherectomy burr has an operating diameter that is larger than the diameter of a catheter in which the burr is routed. The burr may include an expandable polymeric balloon having a partially abrasive exterior surface. The maximum expansion of the burr is controlled by an expansion mechanism. Various mechanisms are disclosed for controlling the maximum diameter of the burr thus preventing the burr from over expanding. In addition, the present invention includes systems that are pulled proximally to remove portions of a lesion located in a patient's vasculature. The system includes an ablation burr that has abrasive disposed on the proximal end. The burr may create a seal when expanded to block the ablated particulate so that an aspiration system can remove the particulate from the vasculature. Alternatively, the burr system may include a self expanding seal that is deployed out of the aspiration sheath.

US Patent:

7600014, Oct 6, 2009

Filed:

Nov 14, 2001

Appl. No.:

09/991127

Inventors:

Ethan George Russell - Seattle WA, US
Stephen William Cote - Snoqualmie WA, US
Erkki Ville Juhani Aikas - Seattle WA, US
Brian David Marsh - Seattle WA, US
John Bradley Chen - Seattle WA, US

Assignee:

Symantec Corporation - Mountain View CA

International Classification:

G06F 15/173
G06F 15/177

US Classification:

709224, 709223, 715736

Abstract:

A service monitor and a browser monitor determine performance metrics on both a server and a client in connection with a distributed application running on a network. While applicable to other types of distributed application data, an example is described in which a Web page is requested by a user running a browser program on the client computer. In response, the server transmits the requested Web page, along with JavaScript code that defines a browser monitor, to the client. A browser monitoring function controlled by this code determines a plurality of different performance metrics related to the access of Web pages by the client. In addition, the server monitor determines performance metrics specific to its function in providing the Web page to the client. A correlated performance metric is determined by combining a server performance metric with a browser performance metric.

US Patent:

7926027, Apr 12, 2011

Filed:

Oct 19, 2004

Appl. No.:

10/968693

Inventors:

John Z Chen - Woodinville WA, US
Joseph P Stegman - Newcastle WA, US
Karol Zadora-Przylecki - Sammamish WA, US
Steven M Lasker - Sammamish WA, US

Assignee:

Microsoft Corporation - Redmond WA

International Classification:

G06F 9/44

US Classification:

717106, 715762

Abstract:

A system and method for method facilitating design-time data binding of business object(s) and/or web service(s) is provided. Developer(s) can specify their own class(es) that do not require specific inheritance, interface implementation or default public constructors. The system includes a binding component that generates control information associated with control(s) based, at least in part, upon binding information associated with an entity (e. g. , object, business object and/or web service). The system further includes a control generator that generates control(s) of a form associated with the entity based upon the generated by the binding component. The binding component can utilize public property(ies) of the entity (e. g. , object, business object and/or web service). The entity can represent a hierarchy of objects that drill down (e. g.

US Patent:

8032626, Oct 4, 2011

Filed:

Sep 27, 2007

Appl. No.:

11/863027

Inventors:

Ethan George Russell - Seattle WA, US
Stephen William Cote - Snoqualmie WA, US
Erkki Ville Juhani Aikas - Seattle WA, US
Brian David Marsh - Seattle WA, US
John Bradley Chen - Seattle WA, US

Assignee:

Symantec Corporation - Mountain View CA

International Classification:

G06F 15/16
G06F 15/177

US Classification:

709224, 709223, 715736

Abstract:

A service monitor and a browser monitor determine performance metrics on both a server and a client in connection with a distributed application running on a network. While applicable to other types of distributed application data, an example is described in which a Web page is requested by a user running a browser program on the client computer. In response, the server transmits the requested Web page, along with JavaScript code that defines a browser monitor, to the client. A browser monitoring function controlled by this code determines a plurality of different performance metrics related to the access of Web pages by the client. In addition, the server monitor determines performance metrics specific to its function in providing the Web page to the client. A correlated performance metric is determined by combining a server performance metric with a browser performance metric.

US Patent:

8078992, Dec 13, 2011

Filed:

Sep 18, 2008

Appl. No.:

12/212660

Inventors:

John Z. Chen - Woodinville WA, US
Yun Feng Dong - Shanghai, CN
Antoine Cote - Shanghai, CN
Tao Shen Hu - Shanghai, CN
Wenhui Zhu - Shanghai, CN
Paul J. Yuknewicz - Redmond WA, US

Assignee:

Microsoft Corporation - Redmond WA

International Classification:

G06F 3/048

US Classification:

715810, 715784, 715968

Abstract:

Form controls can be reused so that the control can be bound to large volumes of data without adverse performance issues because of a large number of controls. A maximum number of rows of data N that can appear in a form are calculated. A container in memory is created for N+2 rows. The additional two rows are used to store the row after the last displayed row and the row previous to the first displayed row. In response to a user scroll or tab operation, rows within the container are reused. Child controls are hosted by the control and are also reused when the data is scrolled out of view.

Address:

2507 S Lucile St, Seattle, WA 98108

VIN:

JTMRF4DV9A5034266

Make:

TOYOTA

Model:

RAV4

Year:

2010

Address:

2333 N 193 St, Shoreline, WA 98133

VIN:

JTDKB20U387728075

Make:

TOYOTA

Model:

PRIUS

Year:

2008