Steven V Nguyen

US Patent:

8269297, Sep 18, 2012

Filed:

Dec 23, 2009

Appl. No.:

12/646558

Inventors:

Radhakrishnan L. Nagarajan - Cupertino CA, US
Andrew G. Dentai - Mountain View CA, US
Scott Corzine - Sunnyvale CA, US
Steven Nguyen - San Jose CA, US
Vikrant Lal - Sunnyvale CA, US
Jacco L. Pleumeekers - Mountain View CA, US
Peter W. Evans - Mountain House CA, US

Assignee:

Infinera Corporation - Sunnyvale CA

International Classification:

H01L 31/0232

US Classification:

257432, 257189, 257E31056

Abstract:

Consistent with the present disclosure, a current blocking layer is provided between output waveguides carrying light to be sensed by the photodiodes in a balanced photodetector, and the photodiodes themselves. Preferably, the photodiodes are provided above the waveguides and sense light through evanescently coupling with the waveguides. In addition, the current blocking layer may include alternating p and n-type conductivity layers, such that, between adjacent ones of such layers, a reverse biased pn-junction is formed. The pn-junctions, therefore, limit the amount of current flowing from one photodiode of the balanced detector to the other, thereby improving performance.

US Patent:

8457114, Jun 4, 2013

Filed:

Aug 31, 2010

Appl. No.:

12/872474

Inventors:

Serdar Sahin - Plano TX, US
Steven Nguyen - Plano TX, US

Assignee:

Telefonaktiebolaget LM Ericsson (Publ) - Stockholm

International Classification:

H04L 12/66

US Classification:

370352, 370351, 370353, 370356, 455435, 455433, 455445

Abstract:

Call placement to or from satellite UEs is optimized by reducing IMS message exchanges, the originating party has control over QoS parameters; a HPA subscription service is made available, and calls to a terminating satellite UE that is shielded from satellite coverage are completed by selectively employing HPA pages. For a call request without preconditions, an IMS node associated with an originating UE uses the NRSCPA on Offer instead of using the standard terminating node initiated NRSCPA on Answer. An IMS node associated with a terminating UE checks for HPA subscription by the user. If subscribed, the terminating INVITE request is for a “Conversational” or “Interactive” service, and the terminating UE is in PMM_IDLE state, the satellite RAN pages the terminating UE using HPA.

US Patent:

8643296, Feb 4, 2014

Filed:

Nov 22, 2011

Appl. No.:

13/302991

Inventors:

Cristiano Bazzani - Irvine CA, US
Fabio Gozzini - Newport Beach CA, US
Steven Van Nguyen - Garden Grove CA, US

Assignee:

Mindspeed Technologies, Inc. - Newport Beach CA

International Classification:

H05B 37/02

US Classification:

315209R, 315192, 315210

Abstract:

A system is disclosed to automatically establish proper biasing for light sources in a color mixed projection system having multiple light sources which are active at the same time. Responsive to a feedback signal, a single DC-DC converter generates the bias voltage for the light sources. Comparators compare a headroom signal for each light source to a reference value to generate comparator output signals. The comparator output signals are processed by a channel selector and a digital filter/DAC module. The channel selector controls a switch to selectively provide and combine a headroom signal with an output of the digital filter/DAC module to create the feedback signal. By monitoring each headroom value, the bias voltage is adjusted, based on the feedback signal, until every headroom signal reaches the reference value thereby achieving sufficient biasing for every active light source in the color mixed projection system.

US Patent:

20080075236, Mar 27, 2008

Filed:

Apr 19, 2007

Appl. No.:

11/737476

Inventors:

Venkatesh Raju - Richardson TX, US
Steven Nguyen - Plano TX, US

International Classification:

H04M 1/64

US Classification:

379 69

Abstract:

A system for providing ringback content. In the system, a user places a call on a communication device to a callee via a network. The network may store content information about the user and uses this content information to deduce the intent of the user's call. The callee provides ringback content to the user's communication device based on the deduced user call intent.

US Patent:

20080075257, Mar 27, 2008

Filed:

Apr 19, 2007

Appl. No.:

11/737490

Inventors:

Steven Nguyen - Plano TX, US
Venkatesh Raju - Richardson TX, US

International Classification:

H04M 3/42

US Classification:

37921002

Abstract:

A system and method for telecommunication network screening of telemarketer messages is provided. A telemarketer message intended for a telecommunication user is received. The telemarketer message and a telecommunication user preference are compared. The telemarketer message is blocked if the telecommunication user preference indicates that the telecommunication user does not want to receive the telemarketer message. The telemarketer message is provided to the telecommunication user if telecommunication user preference indicates that the telecommunication user wants to receive the telemarketer message.

US Patent:

20080177626, Jul 24, 2008

Filed:

Jan 23, 2007

Appl. No.:

11/626063

Inventors:

Steven Duong Nguyen - Plano TX, US

Assignee:

Samsung Electronics Co., Ltd. - Suwon-city

International Classification:

H04M 3/42
G06Q 30/00
G06Q 99/00

US Classification:

705 14, 37920102, 705 1

Abstract:

A system and method for determining user preferences in a telecommunications network are disclosed. As one example, a system for determining user preferences in a telecommunications network is disclosed. The system includes a first server configured to receive and store a plurality of user address books, a second server configured to store a plurality of business types, wherein each business type of the plurality of business types is associated with at least one of a telephone number, URL, and a name, and a third server coupled to the first server and the second server. The third server is configured to receive the plurality of user address books, extract the at least one of a telephone number, URL and name from each user address book of the plurality of user address books, associate the extracted at least one of a telephone number, URL and name with a business type of the plurality of business types, and create a plurality of user preferences.

US Patent:

20110194553, Aug 11, 2011

Filed:

Feb 9, 2010

Appl. No.:

12/703019

Inventors:

Serdar Sahin - Plano TX, US
Steven Nguyen - Plano TX, US

International Classification:

H04L 12/66
H04M 11/04

US Classification:

370352, 4554041

Abstract:

An emergency call in an all Internet Protocol (IP) network having GPRS access is able to be completed without a valid SIM. A valid Subscriber Identity Module is substituted for the missing or invalid SIM only when an emergency call is attempted. The emergency call is either sent via an IMSI from an embedded SIM provided by the UE making the emergency call, or the emergency call is modified with an IMSI substituted by an Emergency SIM Pool Function prior to being sent to the HLR for validation. The SIM is valid for the UE's emergency call so the emergency call is completed because the UE is considered validated by the network.

US Patent:

20120213198, Aug 23, 2012

Filed:

Feb 22, 2011

Appl. No.:

13/031668

Inventors:

Steven Nguyen - Plano TX, US
Dennis Eriksson - Plano TX, US

International Classification:

H04W 36/00

US Classification:

370331, 455444

Abstract:

A method for performing a handoff of an active communication connection for a mobile user station from a macrocell to one or more femtocells. In one aspect, the present invention provides an improved handoff for situations in which the mobile user station is moved into an indoor residential or enterprise environment within which the signal strength of the mobile user station with respect to the macrocell base transceiver station becomes relatively low. In one embodiment, the method efficiently performs a handoff of an active communication connection from a macrocell to one or more femtocells while minimizing the likelihood of dropping the active communication connection during the handoff.