Xu U Chen

8630059, Jan 14, 2014

Feb 29, 2012

13/408974

Xu Chen - Albany CA, US
Wei Xi - Mission Viejo CA, US
Young-Hoon Kim - Cupertino CA, US
Kuang-Yang Tu - Irvine CA, US

Western Digital Technologies, Inc. - Irvine CA

G11B 5/596

360 7814

A disk drive comprises a disk, an actuator arm and a servo controller using a position error signal to generate a controller output signal to control the actuator arm. A plant mechanically models at least a portion of the disk drive, receives a control command to which an unknown disturbance is added and generates a plant output. A disturbance observer (DOB) uses the control command and the plant output to generate a delayed and estimated version of the disturbance. The DOB comprises a Q filter having a selected center frequency. A perfect phase cancellation filter (PPCF) is configured to receive the delayed and estimated version of the disturbance, to reject selected disturbances and to align the desired attenuation frequency with the selected center frequency. The output of the PPCF is subtracted from the controller output signal to generate the control command.

20220191644, Jun 16, 2022

Dec 21, 2021

17/558334

- Cupertino CA, US
Robert W. Brumley - Menlo Park CA, US
Robert William Mayor - Half Moon Bay CA, US
William J. Bencze - Half Moon Bay CA, US
Alejandro J. Marquez - Sunnyvale CA, US
Xu Chen - San Jose CA, US
Indranil S. Sen - Cupertino CA, US
Mohit Narang - San Jose CA, US

Apple Inc. - Cupertino CA

H04W 4/02
B60R 25/24
G07C 9/29

Methods and devices are provided for allowing a mobile device (e.g., a key fob or a consumer electronic device, such as a mobile phone, watch, or other wearable device) to interact with a vehicle such that a location of the mobile device can be determined by the vehicle, thereby enabling certain functionality of the vehicle. A device may include both RF antenna(s) and magnetic antenna(s) for determining a location of a mobile device relative to the vehicle. Such a hybrid approach can provide various advantages. Existing magnetic coils on a mobile device (e.g., for charging or communication) may be re-used for distance measurements that are supplemented by the RF measurements. Any device antenna may provide measurements to a machine learning model that determines a region in which the mobile device resides, based on training measurements in the regions.

20210372796, Dec 2, 2021

Jun 26, 2019

16/453617

- San Jose CA, US
Hiu Hong Yu - Alameda CA, US
Veera Ganesh Yalla - Sunnyvale CA, US
Farzad Cyrus Foroughi Abari - San Bruno CA, US
Andre Michelin - Topanga CA, US
Xu Chen - Livermore CA, US

G01C 21/16
G01S 19/14
G01S 19/48
G01S 17/931
G01S 17/86
G01S 13/931
G01S 13/86

Methods and systems include localization of a vehicle localize precisely and in near real-time. As described, localization of a vehicle using a Global Navigation Satellite System (GNSS) can comprise receiving a signal from each of a plurality of satellites of a GNSS constellation and receiving input from one or more sensors of the vehicle. The input from the sensors can indicate current physical surroundings of the vehicle. A model of the current physical surrounding of the vehicle can be generated based on the input from the one or more sensors of the vehicle. One or more multipath signals received from the plurality of satellites can be mitigated based on the model and the vehicle can be localized using the received signals from the plurality of satellites of the GNSS constellation and based on the mitigation of the one or more multipath signals.

20200034436, Jan 30, 2020

Jul 25, 2019

16/521780

- Mountain View CA, US
Macduff Richard Hughes - Los Gatos CA, US
Yonghui Wu - Fremont CA, US
Michael Schuster - Saratoga CA, US
Xu Chen - San Francisco CA, US
Llion Owen Jones - San Francisco CA, US
Niki J. Parmar - Sunnyvale CA, US
George Foster - Ottawa, CA
Orhan Firat - Mountain View CA, US
Ankur Bapna - Sunnyvale CA, US
Wolfgang Macherey - Sunnyvale CA, US
Melvin Jose Johnson Premkumar - Sunnyvale CA, US

G06F 17/28
G06N 3/08

Methods, systems, and apparatus, including computer programs encoded on computer storage media, for machine translation using neural networks. In some implementations, a text in one language is translated into a second language using a neural network model. The model can include an encoder neural network comprising a plurality of bidirectional recurrent neural network layers. The encoding vectors are processed using a multi-headed attention module configured to generate multiple attention context vectors for each encoding vector. A decoder neural network generates a sequence of decoder output vectors using the attention context vectors. The decoder output vectors can represent distributions over various language elements of the second language, allowing a translation of the text into the second language to be determined based on the sequence of decoder output vectors.

20190297457, Sep 26, 2019

Apr 1, 2019

16/371838

- Cupertino CA, US
Robert W. Brumley - Menlo Park CA, US
Robert William Mayor - Half Moon Bay CA, US
William J. Bencze - Half Moon Bay CA, US
Alejandro J. Marquez - Sunnyvale CA, US
Xu Chen - San Jose CA, US
Indranil S. Sen - Cupertino CA, US
Mohit Narang - Cupertino CA, US

Apple Inc. - Cupertino CA

H04W 4/02
G07C 9/00
B60R 25/24

Methods and devices are provided for allowing a mobile device (e.g., a key fob or a consumer electronic device, such as a mobile phone, watch, or other wearable device) to interact with a vehicle such that a location of the mobile device can be determined by the vehicle, thereby enabling certain functionality of the vehicle. A device may include both RF antenna(s) and magnetic antenna(s) for determining a location of a mobile device relative to the vehicle. Such a hybrid approach can provide various advantages. Existing magnetic coils on a mobile device (e.g., for charging or communication) may be re-used for distance measurements that are supplemented by the RF measurements. Any device antenna may provide measurements to a machine learning model that determines a region in which the mobile device resides, based on training measurements in the regions.

20190197101, Jun 27, 2019

Dec 22, 2017

15/852916

- Mountain View CA, US
Timothy Youngjin Sohn - Los Altos CA, US
Jacqueline Amy Tsay - Sunnyvale CA, US
Gagan Bansal - Sunnyvale CA, US
Cole Austin Bevis - Lake Forest IL, US
Kaushik Roy - Santa Clara CA, US
Justin Tzi-jay LU - Mountain View CA, US
Katherine Anna Evans - Palo Alto CA, US
Tobias Bosch - Santa Clara CA, US
Yinan Wang - San Jose CA, US
Matthew Vincent Dierker - Palo Alto CA, US
Gregory Russell Bullock - Zürich, CH
Ettore Randazzo - Zürich, CH
Tobias Kaufmann - Zürich, CH
Yonghui Wu - Mountain View CA, US
Benjamin N. Lee - Mountain View CA, US
Xu Chen - San Francisco CA, US
Brian Strope - Palo Alto CA, US
Yun-hsuan Sung - Mountain View CA, US
Do Kook Choe - Sunnyvale CA, US
Rami Eid Sammour Al-Rfou' - Mountain View CA, US

G06F 17/27
G06F 3/0484
G06N 99/00

A computing system is described that includes user interface components configured to receive typed user input; and one or more processors. The one or more processors are configured to: receive, by a computing system and at a first time, a first portion of text typed by a user in an electronic message being edited; predict, based on the first portion of text, a first candidate portion of text to follow the first portion of text; output, for display, the predicted first candidate portion of text for optional selection to append to the first portion of text; determine, at a second time that is after the first time, that the electronic message is directed to a sensitive topic; and responsive to determining that the electronic message is directed to a sensitive topic, refrain from outputting subsequent candidate portions of text for optional selection to append to text in the electronic message.

20180234797, Aug 16, 2018

Feb 12, 2018

15/894774

- Cupertino CA, US
Robert W. Brumley - Menlo Park CA, US
Robert William Mayor - Half Moon Bay CA, US
William J. Bencze - Half Moon Bay CA, US
Alejandro J. Marquez - Sunnyvale CA, US
Xu Chen - San Jose CA, US
Mohit Narang - San Jose CA, US
Indranil S. Sen - Cupertino CA, US

H04W 4/02
G07C 9/00

Methods and devices are provided for allowing a mobile device (e.g., a key fob or a consumer electronic device, such as a mobile phone, watch, or other wearable device) to interact with a vehicle such that a location of the mobile device can be determined by the vehicle, thereby enabling certain functionality of the vehicle. A device may include both RF antenna(s) and magnetic antenna(s) for determining a location of a mobile device relative to the vehicle. Such a hybrid approach can provide various advantages. Existing magnetic coils on a mobile device (e.g., for charging or communication) may be re-used for distance measurements that are supplemented by the RF measurements. Any device antenna may provide measurements to a machine learning model that determines a region in which the mobile device resides, based on training measurements in the regions.

20170368080, Dec 28, 2017

Jan 15, 2016

15/543199

- San Francisco CA, US
Xu Chen - San Francisco CA, US
Min Xie - Daly City CA, US
Eric M. Verdin - Mill Valley CA, US

A61K 31/618
A61K 9/127
A61K 47/69
A61K 47/54
A61K 47/64
A61K 47/55
A61K 9/50
A61K 9/00

The present disclosure provides methods of reducing the level of acetylated Tau in a neuron or a glial cell in an individual, the methods involving administering to the individual a prodrug that is converted in the individual to salicylate. The present disclosure provides methods of treating a tauopathy in an individual, the methods involving administering to the individual a prodrug that is converted in the individual to salicylate.