Fei Liu

US Patent:

20120303355, Nov 29, 2012

Filed:

May 27, 2011

Appl. No.:

13/117330

Inventors:

Fei Liu - Palo Alto CA, US
Fuliang Weng - Mountain View CA, US

Assignee:

ROBERT BOSCH GMBH - Stuttgart

International Classification:

G06F 17/27

US Classification:

704 9

Abstract:

A method for generating non-standard tokens that correspond to standard tokens used in speech synthesis systems has been developed. The method includes selecting a standard token from a plurality of standard tokens stored in memory, using a random field model to select a predetermined operation to perform on each character in the selected token, performing the selected operation on each character to generate an output token, and storing the output token in the memory in association with the selected token. The output token is different from each token in the plurality of standard tokens.

US Patent:

20200396362, Dec 17, 2020

Filed:

Aug 27, 2020

Appl. No.:

17/004323

Inventors:

- Menlo Park CA, US
Joseph Duggan - San Francisco CA, US
Cina Hazegh - Walnut Creek CA, US
Fei Liu - San Jose CA, US
Mark Timothy Sullivan - Mountain View CA, US
Simon Morris Shand Weiss - Redwood City CA, US

International Classification:

H04N 5/238
H04N 5/225
G06T 7/521
H04N 5/235
G02B 5/28
G02B 27/42

Abstract:

An imaging device for imaging of a local area surrounding the imaging device. The imaging device includes a lens assembly, a filtering element and a detector. The lens assembly is configured to receive light from a local area surrounding the imaging device and to direct at least a portion of the received light to the detector. The filtering element is placed in the imaging device within the lens assembly such that light is incident at a surface of the filtering element within a range of angles determined by a design range of angles at which the filtering element is designed to filter light. The detector is configured to capture image(s) of the local area including the filtered light. The imaging device can be integrated into a depth camera assembly for determining depth information of object(s) in the local area based on the captured image(s).

US Patent:

20200259982, Aug 13, 2020

Filed:

Sep 1, 2017

Appl. No.:

15/694480

Inventors:

- Menlo Park CA, US
Joseph Duggan - San Francisco CA, US
Cina Hazegh - Walnut Creek CA, US
Fei Liu - San Jose CA, US
Mark Timothy Sullivan - Mountain View CA, US
Simon Morris Shand Weiss - Redwood City CA, US

International Classification:

H04N 5/238
H04N 5/225
G06T 7/521
H04N 5/235
G02B 5/28
G02B 27/42

Abstract:

An imaging device for imaging of a local area surrounding the imaging device. The imaging device includes a lens assembly, a filtering element and a detector. The lens assembly is configured to receive light from a local area surrounding the imaging device and to direct at least a portion of the received light to the detector. The filtering element is placed in the imaging device within the lens assembly such that light is incident at a surface of the filtering element within a range of angles determined by a design range of angles at which the filtering element is designed to filter light. The detector is configured to capture image(s) of the local area including the filtered light. The imaging device can be integrated into a depth camera assembly for determining depth information of object(s) in the local area based on the captured image(s).

US Patent:

20190332329, Oct 31, 2019

Filed:

Apr 26, 2018

Appl. No.:

15/963386

Inventors:

- Grand Cayman KY, US
Fei LIU - Burlingame CA, US
Shu LI - Santa Clara CA, US

International Classification:

G06F 3/06
G06F 7/14
G06F 17/30

Abstract:

The disclosed embodiments are directed to improvements in log-structured merge (LSM) tree databases. In one embodiment, a method is disclosed comprising receiving data to be written to a log-structured merge (LSM) tree, the data including a key and value; determining that an in-memory buffer lacks capacity to store the data to be written; compacting key-ranges stored in at least one level of the LSM tree stored in an object storage device (OSD), each of the key-ranges associated with a respective object identifier; generating a key range object, the key range object including object identifiers associated with a subset of the key-ranges; erasing physical blocks corresponding to each of the object identifiers included in the key range object; and writing the key range object to at least one physical block of the OSD.

US Patent:

20190098276, Mar 28, 2019

Filed:

Sep 27, 2017

Appl. No.:

15/717332

Inventors:

- Menlo Park CA, US
Cina Hazegh - Walnut Creek CA, US
Fei Liu - San Jose CA, US

International Classification:

H04N 13/02
H04N 5/232

Abstract:

A camera system configured to generate depth information for a local area. The camera system comprises a plurality of depth camera sub-assemblies arranged in a substantially spherical arrangement. Each sub-assembly comprises a projector that projects a structured light pattern onto a portion of the local area, such that the projected light patterns of the plurality of sub-assemblies form a tiled light pattern covering 360 degrees of the local area. Each sub-assembly further comprises at least one camera is configured to capture images of the local area. A controller of the camera system is configured to receive the captured images and to construct a 360 degree depth map of the scene, based upon the structured light patterns projected by the projectors of the plurality captured in the received images.

US Patent:

20190087431, Mar 21, 2019

Filed:

Sep 21, 2017

Appl. No.:

15/711409

Inventors:

- Grand Cayman, KY
Fei LIU - Burlingame CA, US
Shu LI - Santa Clara CA, US

International Classification:

G06F 17/30

Abstract:

Systems and methods for providing key-value based filesystem operations are disclosed. In one embodiment, the method comprises receiving at least one file operation from an application, the file operation including a file path and a requested operation; generating a key-value operation based on the file operation, the key-value operation including a key including the file path; executing the key-value operation at a key-value storage engine; receiving, from the key-value storage engine, a result of the key-value operation; generating a result value based on the result of the key-value operation; and returning the result value to the application.

US Patent:

20190066316, Feb 28, 2019

Filed:

Aug 31, 2017

Appl. No.:

15/693297

Inventors:

- Menlo Park CA, US
Joseph Duggan - San Francisco CA, US
Cina Hazegh - Walnut Creek CA, US
Fei Liu - San Jose CA, US
Mark Timothy Sullivan - Mountain View CA, US
Simon Morris Shand Weiss - Redwood City CA, US

International Classification:

G06T 7/521
G02B 27/01
G02B 26/08
G02B 27/42
H04N 5/225

Abstract:

A depth camera assembly for depth sensing of a local area includes a structured light generator, an imaging device, and a controller. The structured light generator illuminates a local area with structured light and includes an illumination source, a mounting element, and a diffractive optical element (DOE) mounted on the mounting element. The mounting element can have a plurality of adjustable positions relative to the illumination source based on emission instructions from the controller. The DOE generates, using light emitted from the illumination source, diffracted scanning beams that are projected as the structured light into the local area. A pattern of the structured light is dynamically adjustable and unique for each adjustable position of the mounting element. The imaging device captures image(s) of the structured light reflected from object(s) in the local area. The controller determines depth information for the object(s) based in part on the captured image(s).

US Patent:

20190049720, Feb 14, 2019

Filed:

Aug 14, 2017

Appl. No.:

15/676717

Inventors:

- Menlo Park CA, US
Joseph Duggan - San Francisco CA, US
Cina Hazegh - Walnut Creek CA, US
Fei Liu - San Jose CA, US
Mark Timothy Sullivan - Mountain View CA, US
Simon Morris Shand Weiss - Redwood City CA, US

International Classification:

G02B 26/10
G02B 26/08
G02F 1/29
G03B 15/06
G02B 27/30
G02B 27/42

Abstract:

A depth camera assembly (DCA) for depth sensing of a local area includes a structured light generator, an imaging device, and a controller. The structured light generator illuminates the local area with a structured light pattern. The structured light generator includes a programmable diffractive optical element (PDOE) that generates diffracted scanning beams using optical beams. The PDOE functions as a dynamic diffraction grating that dynamically adjusts diffraction of the optical beams to generate the diffracted scanning beams of different patterns. The diffracted scanning beams are projected as the structured light pattern into the local area, wherein the structured light pattern is dynamically adjustable based on the PDOE. The imaging device captures image(s) of at least a portion of the structured light pattern reflected from object(s) in the local area. The controller determines depth information for the object(s) based on the captured image(s).