Eric A Chang

US Patent:

7277346, Oct 2, 2007

Filed:

Dec 14, 2004

Appl. No.:

11/012877

Inventors:

Irfan Rahim - San Jose CA, US
Peter J. McElheny - Morgan Hill CA, US
Eric Choong-Yin Chang - Cupertino CA, US

Assignee:

Altera Corporation - San Jose CA

International Classification:

G11C 17/18

US Classification:

3652257, 326 39, 326 10, 326 12, 326 13, 365200, 365201, 36518509

Abstract:

A semiconductor system and method for repairing failures of a packaged integrated circuit system are provided. The method includes detecting a failure associated with a packaged integrated circuit system after the packaged integrated circuit system is packaged, and repairing the failure by activating a redundancy circuit in the packaged integrated circuit system and deactivating a defective circuit associated with the failure. The process for repairing the failure includes applying a repair voltage to a polysilicon fuse to change a conductivity state of the polysilicon fuse from a first state to a second state. In another embodiment, the polysilicon fuse is replaced by a metal fuse, an anti-fuse, or a non-volatile random access memory.

US Patent:

7319341, Jan 15, 2008

Filed:

Aug 28, 2003

Appl. No.:

10/653045

Inventors:

Michael Harms - Pleasanton CA, US
Eric C. Chang - Cupertino CA, US
Paul Tracy - Sunnyvale CA, US
John DiCosola - Pleasanton CA, US
Mandrita Brahmachari - Milpitas CA, US

Assignee:

Altera Corporation - San Jose CA

International Classification:

G01R 31/26

US Classification:

324765

Abstract:

The present invention is a novel method and computer program product which utilizes an interface capacitor formed by the metal of the probe tip, a dielectric layer, such as an oxide, formed by a contaminant on a solder bump and the metal of the solder bump. The interface capacitor forms a capacitive divider with the inherent capacitances of the automatic test equipment and the device under test (DUT). The voltage characteristics of the capacitive divider are used to drive voltage signals across the interface capacitor to test the DUT. In either direction (i. e. from the automatic test equipment to the DUT or vice versa), by altering the voltage output high amplitude of the driver and/or the voltage input high amplitude of the load, the DUT is validly tested through the interface capacitor. Thus, even if all I/O bumps have an oxide layer, the device may still be validly tested.

US Patent:

7477623, Jan 13, 2009

Filed:

Feb 10, 2005

Appl. No.:

11/055183

Inventors:

Eric C. Chang - Plano TX, US

Assignee:

Santera Systems, Inc. - Plano TX

International Classification:

H04Q 7/00

US Classification:

370329, 370437

Abstract:

Methods, systems, and computer program products for caching and reusing bearer channels for voice over packet sessions involving wireless entities are disclosed. According to one method, a setup request message is received for a voice over packet session involving a wireless entity. In response to the setup request message, a bearer channel is established using bearer channel setup signaling. When the first session is released, the bearer channel is cached for a predetermined time period. A second setup request message is received. The second setup request message involves the first and second nodes and a wireless entity. In response to the second setup request message, the cached bearer channel is re-used for the second session.

US Patent:

7671579, Mar 2, 2010

Filed:

Sep 7, 2006

Appl. No.:

11/470898

Inventors:

Yan Chong - San Jose CA, US
Joseph Huang - Morgan Hill CA, US
Chiakang Sung - Milpitas CA, US
Eric Choong-Yin Chang - Cupertino CA, US
Peter Boyle - Mountain View CA, US
Adam J. Wright - Saratoga CA, US

Assignee:

Altera Corporation - San Jose CA

International Classification:

G01R 23/175
G08B 23/00

US Classification:

324 7654, 324 7635, 340527

Abstract:

Delay associated with each of two signals along respective transmission paths is accurately measured using a delay measurement circuit that is fabricated in situ on the actual device where the circuitry for propagating the two signals is fabricated. Thus, the measured delay associated with each of the two signals is subject to the same fabrication-dependent attributes that affect the actual circuitry through which the two signals will be propagated during operation of the device. The skew between the two signals is quantified as the difference in the measured delays. Coarse and fine delay modules are defined within the transmission path of each of the two signals. Based on the measured skew between the two signals, the coarse and fine delay modules are appropriately set to compensate for the skew. The appropriately settings for the coarse and fine delay modules can be stored in non-volatile memory elements.

US Patent:

7792150, Sep 7, 2010

Filed:

Aug 19, 2005

Appl. No.:

11/207572

Inventors:

Weisheng Chen - Allen TX, US
Eric C. Chang - Plano TX, US

Assignee:

Genband US LLC - Plano TX

International Classification:

H04J 3/18

US Classification:

370477, 370401

Abstract:

Methods, systems, and computer program products for providing transcoder-free operation in a media gateway are disclosed. In one method, first and second lists of media encoding rates and corresponding indices used by first and second media endpoints of a media stream connection are received. It is determined whether transcoder-free operation is possible for the media stream connection based on the first and second lists. In response to determining that transcoder-free operation is possible for the media stream connection, a transcoder-free connection is established in the media gateway between the first and second endpoints using a single digital signal processor to monitor and map between indices and encoding rates used by the first and second endpoints during the media stream connection.

US Patent:

7884619, Feb 8, 2011

Filed:

Sep 24, 2009

Appl. No.:

12/566157

Inventors:

Yan Chong - San Jose CA, US
Joseph Huang - Morgan Hill CA, US
Chiakang Sung - Milpitas CA, US
Eric Choong-Yin Chang - Cupertino CA, US
Peter Boyle - Mountain View CA, US
Adam J. Wright - Saratoga CA, US

Assignee:

Altera Corporation - San Jose CA

International Classification:

G01R 35/00
G01R 23/175
G08B 23/00
H03L 7/00

US Classification:

324601, 324 7654, 340527, 327153

Abstract:

Delay associated with each of two signals along respective transmission paths is accurately measured using a delay measurement circuit that is fabricated in situ on the actual device where the circuitry for propagating the two signals is fabricated. Thus, the measured delay associated with each of the two signals is subject to the same fabrication-dependent attributes that affect the actual circuitry through which the two signals will be propagated during operation of the device. The skew between the two signals is quantified as the difference in the measured delays. Coarse and fine delay modules are defined within the transmission path of each of the two signals. Based on the measured skew between the two signals, the coarse and fine delay modules are appropriately set to compensate for the skew. The appropriately settings for the coarse and fine delay modules can be stored in non-volatile memory elements.

US Patent:

7940772, May 10, 2011

Filed:

May 26, 2005

Appl. No.:

11/138990

Inventors:

Jinshui Liu - Plano TX, US
Weisheng Chen - Allen TX, US
Eric Chien-Chung Chang - Plano TX, US
Yen Shei - Plano TX, US
David Z. Lu - Dallas TX, US

Assignee:

Genband US LLC - Plano TX

International Classification:

H04L 12/28

US Classification:

3703951

Abstract:

The subject matter described herein includes methods, systems, and computer program products for transporting ATM cells in a device having an Ethernet switching fabric. According to one method, at least one ingress ATM cell is received at an ATM network interface of a device having an Ethernet switching fabric. Next, the connection associated with which the ingress ATM cell is identified. The ATM cell is encapsulated in Ethernet frame addressed to a media processing resource associated with the connection. The Ethernet frame is forwarded to the media processing resource across an Ethernet switching fabric.

US Patent:

8011130, Sep 6, 2011

Filed:

Jul 6, 2007

Appl. No.:

11/774210

Inventors:

Eric E. Chang - Dallas TX, US
Terrance L. Eck - Plano TX, US
Richard L. Scott - The Colony TX, US

Assignee:

Raytheon Company - Waltham MA

International Classification:

F41G 1/387

US Classification:

42124, 89 4117

Abstract:

An apparatus generally includes a gun mount portion and a sight mount portion that are coupled together by a resilient member. The gun mount portion provides attachment to a gun and the sight mount portion provides attachment to a gun sight. The resilient member is configured to allow, when attached to the gun, a linear displacement of the sight mount portion relative to the gun mount portion along a longitudinal axis of the gun.