Wen Mae Wang

US Patent:

6411634, Jun 25, 2002

Filed:

Nov 12, 1998

Appl. No.:

09/189924

Inventors:

Qin Zhang - San Jose CA
Wen hui Wang - San Jose CA
Gang Hou - San Jose CA

Assignee:

Oplink Communications, Inc. - San Jose CA

International Classification:

H01S 313

US Classification:

372 32, 372 18, 372 20, 354233, 354234, 354236, 354341

Abstract:

A system and method for providing a wavelength locker is disclosed. In one aspect, the method and system include providing a reflector, a first filter, and a second filter. The reflector is for receiving an optical signal, transmitting a first portion of the optical signal, and reflecting a second portion of the optical signal. The first filter is for receiving the first portion and transmitting a third portion of the optical signal. The first filter includes a first axis and is capable of being tuned by rotation around the first axis to transmit the third portion including a particular wavelength. The second filter is for receiving the third portion and transmitting a fourth portion of the optical signal. The second filter includes a second axis substantially perpendicular to the first axis and is capable of being tuned by rotation around the second axis to transmit the fourth portion including the particular wavelength. In one aspect, the method and system also include photodetectors to receive the second and fourth portions of the optical signal.

US Patent:

7197010, Mar 27, 2007

Filed:

Jun 20, 2001

Appl. No.:

09/885373

Inventors:

Alberto D. Berstein - Cupertino CA, US
Mendy Segal - Santa Clara CA, US
Wen Wang - Fremont CA, US
Israel Yuval - Sunnyvale CA, US

Assignee:

Zhone Technologies, Inc. - Oakland CA

International Classification:

H04L 12/26

US Classification:

370252, 370356

Abstract:

In assessing the capability of an IP based network to support toll telephony service, objective measurements of Speech Quality are taken. A module is used with Voice over Packet equipment that allows performance of voice quality measurements in real-time without using any external test equipment. A reference signal that includes a marker and a voice test signal is sent through the network from one Voice over Packet equipment containing or connected to the module to another. The received marker is compared to the reference marker to identify the onset time of the received voice test signal. The received and reference voice test signals are processed to measure the quality of the network. This may be implemented using the processing power and memory resources present in Voice over Packet equipment giving the network administrator an enhanced test capability at each node of the network. Voice quality measurements may be generated in a transparent way for the callers in real-time under severely degraded conditions of the network.

US Patent:

7720240, May 18, 2010

Filed:

Apr 3, 2007

Appl. No.:

11/696128

Inventors:

Wen Wang - Cupertino CA, US

Assignee:

SRS Labs, Inc. - Santa Ana CA

International Classification:

H04R 5/02

US Classification:

381309, 381310, 381 74

Abstract:

Systems and methods of processing audio signals are described. The audio signals comprise information about spatial position of a sound source relative to a listener. At least one audio filter generates two filtered signals for each of audio signal. The two filtered signals are mixed with other filtered signals from other audio signals to create a right output audio channel and a left audio output channel, such that the spatial position of the sound source is perceptible from the right and left audio output channels.

US Patent:

8027477, Sep 27, 2011

Filed:

Sep 13, 2006

Appl. No.:

11/531624

Inventors:

Wen Wang - Cupertino CA, US

Assignee:

SRS Labs, Inc. - Santa Ana CA

International Classification:

H04R 5/00
H04R 5/02
H04R 1/00

US Classification:

381 17, 381310

Abstract:

Systems and methods for audio signal processing are disclosed, where a discrete number of simple digital filters are generated for particular portions of an audio frequency range. Studies have shown that certain frequency ranges are particularly important for human ears' location-discriminating capability, while other ranges are generally ignored. Head-Related Transfer Functions (HRTFs) are examples response functions that characterize how ears perceive sound positioned at different locations. By selecting one or more “location-critical” portions of such response functions, one can construct simple filters that can be used to simulate heating where location-discriminating capability is substantially maintained. Because the filters can be simple, they can be implemented in devices having limited computing power and resources to provide location-discrimination responses that form the basis for many desirable audio effects.

US Patent:

20100226500, Sep 9, 2010

Filed:

May 17, 2010

Appl. No.:

12/781741

Inventors:

Wen Wang - Cupertino CA, US

Assignee:

SRS LABS, INC. - Santa Ana CA

International Classification:

H04R 5/00

US Classification:

381 17

Abstract:

Systems and methods of processing audio signals are described. The audio signals comprise information about spatial position of a sound source relative to a listener. At least one audio filter generates two filtered signals for each of audio signal. The two filtered signals are mixed with other filtered signals from other audio signals to create a right output audio channel and a left audio output channel, such that the spatial position of the sound source is perceptible from the right and left audio output channels.

US Patent:

20120014528, Jan 19, 2012

Filed:

Sep 23, 2011

Appl. No.:

13/244043

Inventors:

Wen Wang - Cupertino CA, US

Assignee:

SRS LABS, INC. - Santa Ana CA

International Classification:

H04R 5/00

US Classification:

381 17

Abstract:

Systems and methods for audio signal processing are disclosed, where a discrete number of simple digital filters are generated for particular portions of an audio frequency range. Studies have shown that certain frequency ranges are particularly important for human ears' location-discriminating capability, while other ranges are generally ignored. Head-Related Transfer Functions (HRTFs) are examples response functions that characterize how ears perceive sound positioned at different locations. By selecting one or more “location-critical” portions of such response functions, one can construct simple filters that can be used to simulate hearing where location-discriminating capability is substantially maintained. Because the filters can be simple, they can be implemented in devices having limited computing power and resources to provide location-discrimination responses that form the basis for many desirable audio effects.

US Patent:

20120099733, Apr 26, 2012

Filed:

Oct 20, 2011

Appl. No.:

13/277978

Inventors:

Wen Wang - Cupertino CA, US
James Tracey - Laguna Niguel CA, US
Themis Katsianos - Highland CA, US

Assignee:

SRS LABS, INC. - Santa Ana CA

International Classification:

H04R 5/00

US Classification:

381 17

Abstract:

A stereo widening system and associated signal processing algorithms are described herein that can, in several embodiments, widen a stereo image with fewer processing resources than existing crosstalk cancellation systems. These system and algorithms can advantageously be implemented in a handheld device or other device with speakers placed close together, thereby improving the stereo effect produced with such devices at lower computational cost. However, the systems and algorithms described herein are not limited to handheld devices, but can more generally be implemented in any device with multiple speakers.

US Patent:

20130187124, Jul 25, 2013

Filed:

Jan 25, 2012

Appl. No.:

13/358438

Inventors:

JIANPING ZHANG - EL MONTE CA, US
HONGMEI WANG - EL MONTE CA, US
CHUNHUI YAN - EL MONTE CA, US
WEN WANG - EL MONTE CA, US
YING LIU - EL MONTE CA, US

Assignee:

INVENLUX LIMITED - CENTRAL

International Classification:

H01L 33/32
C30B 25/02
B82Y 99/00

US Classification:

257 13, 117104, 257E33008, 257E33025, 977932

Abstract:

A light emitting device has a nanostructured layer with nanovoids. The nanostructured layer can be provided below and adjacent to active region or on a substrate or a template below an n-type layer for the active region, so as to reduce strain between epitaxial layers in the light emitting device. A method of manufacturing the same is provided.