Hung Manh Pham

US Patent:

7916350, Mar 29, 2011

Filed:

Apr 15, 2008

Appl. No.:

12/102929

Inventors:

Hung M. Pham - Torrance CA, US

Assignee:

Xerox Corporation - Norwalk CT

International Classification:

H04N 1/405

US Classification:

358 305, 358 303

Abstract:

What is disclosed is a novel system and method for minimizing visual artifacts, such as ROS skew and laserbeam bow, in a brick-layer halftone structure. The present method involves determining a line pattern from ROS skew and laserbeam bow profiles which traverses through successive halftone cells displacing pixels along scanlines in the process direction. The amount of displacement is varied as a function of the cross-process location as determined by the line pattern. Pixels along scanlines are shifted in a direction defined by the error profiles. In each halftone cell within which the line pattern traverses, extra pixels (empty pixel spaces created in the halftone cell by the shifting operation) are filled with lost pixels (pixels bumped from the halftone cell during the shifting operation) such that overall density of the halftone cell is maintained. The lost pixels are buffered such that lost pixels are preserved.

US Patent:

7940278, May 10, 2011

Filed:

Dec 8, 2005

Appl. No.:

11/296416

Inventors:

Hung Manh Pham - Torrance CA, US
Chi Minh Pham - Lawndale CA, US

Assignee:

Xerox Corporation - Norwalk CT

International Classification:

G09G 5/36
G06F 12/02
G06F 12/06
G06K 9/00
G06K 9/56

US Classification:

345556, 382165, 382205, 345565, 345572

Abstract:

In a method of programming for image enhancement, a content addressable memory is accessed. At least one template is transferred into the content addressable memory. A random access memory is accessed. Enhancement data is transferred into the random access memory. Video data input is inputted into the content addressable memory. Enhancement data is outputted from the random access memory based on the video data matching at least one template.

US Patent:

8332900, Dec 11, 2012

Filed:

Dec 1, 2010

Appl. No.:

12/958211

Inventors:

Hung John Pham - Cedar Park TX, US

Assignee:

AT&T Intellectual Property I, L.P. - Atlanta GA

International Classification:

H04N 7/173
G06F 11/00
G01R 31/08

US Classification:

725107, 370241, 370252

Abstract:

A method and system for monitoring video assets provided by a multimedia content distribution network (MCDN) includes an expert test monitoring platform (ETMP) configured to emulate MCDN client systems at a facility of an MCDN service provider. The ETMP may be used to obtain remote control response metrics, along with internal performance data, for client systems in the ETMP. Historical metrics and historical data may be logged along with the release version for the client systems, which may then be used to correlate operational performance when analyzing client system characteristics.

US Patent:

8352994, Jan 8, 2013

Filed:

Aug 31, 2010

Appl. No.:

12/873097

Inventors:

Hung John Pham - Cedar Park TX, US

Assignee:

AT&T Intellectual Property I, L.P. - Atlanta GA

International Classification:

H04N 7/173

US Classification:

725107, 725 70, 348180, 348192, 382236

Abstract:

A method and system for test monitoring video assets provided by a multimedia content distribution network (MCDN) includes an expert test monitoring platform (ETMP) configured to emulate MCDN client systems at a facility of an MCDN service provider. The ETMP may be used to test monitor MCDN performance by acquiring a baseband video signal and performing a test operation. The test operation may involve determining if a video freeze event and/or an audio freeze event has occurred with respect to the baseband video signal. In one example, detection of both an audio and a video freeze event may determine a freeze event for an MHD. After a freeze event is detected, the MHD may be restarted. The freeze event may be logged as a result of the test operation. A predetermined network address may be sent a notification of the freeze alert.

US Patent:

8397854, Mar 19, 2013

Filed:

Feb 24, 2012

Appl. No.:

13/405127

Inventors:

Ki Y. Nam - Newport Coast CA, US
Richard Taras - Anaheim CA, US
Hung Pham - Stanton CA, US

Assignee:

T3 Motion, Inc. - Costa Mesa CA

International Classification:

B62D 61/06
B62K 5/02

US Classification:

180213, 180210, 180211, 180214, 180217, 180 6551

Abstract:

A drive wheel and suspension for a vehicle for mounting on a steering post to provide both a steering capability and propulsion to the vehicle. The drive wheel and suspension provides a spring suspension for that wheel of the vehicle, as well as what is effectively vehicle body mounting of the propulsion system so as to minimize un-sprung weight and to provide a compact assembly to support a suitable aesthetic and protective fender over the drive wheel and suspension.

US Patent:

8458757, Jun 4, 2013

Filed:

Aug 31, 2010

Appl. No.:

12/873109

Inventors:

Hung John Pham - Cedar Park TX, US

Assignee:

AT&T Intellectual Property I, L.P. - Atlanta GA

International Classification:

H04N 7/173
H04N 17/00
G06K 9/46

US Classification:

725107, 725119, 348180, 348192, 382236

Abstract:

A method and system for monitoring video assets provided by a multimedia content distribution network (MCDN) includes an expert test monitoring platform (ETMP) configured to emulate MCDN client systems at a facility of an MCDN service provider. The ETMP may be used to test monitor MCDN performance by acquiring a baseband video signal and performing a test operation including at least one check point condition. The check point condition may be associated with a masked region of the video signal and may also involve a test of an audio channel. A plurality of test operations and/or check point conditions may be defined and executed on the baseband video signal, while the results of the test operation may be logged.

US Patent:

8544034, Sep 24, 2013

Filed:

Dec 2, 2010

Appl. No.:

12/958732

Inventors:

Hung John Pham - Cedar Park TX, US

Assignee:

AT&T Intellectual Property I, L.P. - Atlanta GA

International Classification:

H04H 60/33
H04N 7/173

US Classification:

725 13, 725107, 725109

Abstract:

A method and system for monitoring video assets provided by a multimedia content distribution network (MCDN) includes an expert test monitoring platform (ETMP) configured to emulate MCDN client systems at a facility of an MCDN service provider. The ETMP may allow users to provide input to an ETMP studio application for generating remote control commands to send to a desired multimedia handling device (MHD) representing an emulated MCDN client. The user input may be captured to generate an ETMP script, which may be stored in a globally addressable format that is reusable with other MHDs in the ETMP. Additional functionality for editing and combining portions of ETMP scripts to generate further ETMP scripts may also be provided.

US Patent:

20040201486, Oct 14, 2004

Filed:

Apr 10, 2003

Appl. No.:

10/410844

Inventors:

Thomas Knowles - Norco CA, US
Rakesh Malhotra - Chino Hills CA, US
Hung Pham - Rancho Cucamonga CA, US
John Sharkey - Elgin IL, US

International Classification:

G08B021/00

US Classification:

340/657000, 246/020000, 340/641000

Abstract:

A solid state crossing controller for a railroad crossing signal system with two independent outputs for controlling illumination of lamps in the signal system share a common neutral or return wire, with sensing of a common neutral or return line shared by the two independent outputs to determine any loss of the neutral line. When a failure has been detected in the neutral line, the controller modifies the voltages for the lamps in the signaling system for better illumination of the lamps during the failure condition, such as to the highest voltage available from a battery in the system. Upon detection of the failure in the neutral line, the controller may provide a call or message that there is a failure in the system that is in need of repair. If the failure in the neutral line is intermittent, the controller will resume normal operation after that train, has cleared the crossing. However, a call or message that a failure has occurred in the neutral line is provided. Tests for the failure will be repeated when the next train approaches the crossing. Related methods for determining whether a failure has occurred in the neutral line are also disclosed.