Xi Chen

US Patent:

20210292463, Sep 23, 2021

Filed:

Mar 18, 2021

Appl. No.:

17/205206

Inventors:

- Evanston IL, US
Xi Chen - Evanston IL, US
Sumeng Hu - Evanston IL, US
Lingqiao Li - Houston TX, US

International Classification:

C08G 18/10
C08G 18/32
C08G 18/48
C08G 18/20
C08G 18/76
C08J 11/24

Abstract:

Reprocessable crosslinked polyurethane networks, methods for making the reprocessable polyurethane networks, and methods for depolymerizing the crosslinked polyurethane networks and recovering the depolymerized monomers are provided. The polyurethane networks are rendered reprocessable by the incorporation of free hydroxyl groups and the incorporation of multi-functional alcohol crosslinkers.

US Patent:

20210069908, Mar 11, 2021

Filed:

Sep 8, 2020

Appl. No.:

17/014321

Inventors:

- Berkeley CA, US
Nikhil Mishra - Irvine CA, US
Yu Xuan Liu - Sugar Lane TX, US
Yan Duan - Berkeley CA, US
Andrew Amir Vaziri - Lutherville MD, US
Xi Chen - Berkeley CA, US

International Classification:

B25J 9/16
B25J 13/08

Abstract:

Various embodiments of the present technology generally relate to robotic devices, computer-vision systems, and artificial intelligence. More specifically, some embodiments relate to a computer-vision system for robotic devices. In some implementations, a computer-vision is coupled to a robotic arm for picking items from a bin and perturbing items in a bin. A computer-vision system, in accordance with the present technology, may use at least two two-dimensional (2D) images to generate three-dimensional (3D) information about the bin and items in the bin. A method of training artificial neural networks to generate 3D information from 2D images includes obtaining ground truth data for a scene, obtaining at least two images of the scene, and providing the ground truth data and the at least two images to the artificial neural network configured to generate a depth map from the images based on the ground truth data.

US Patent:

20150084690, Mar 26, 2015

Filed:

Oct 9, 2013

Appl. No.:

14/049588

Inventors:

- Irvine CA, US
Xi Chen - Irvine CA, US
Ramon Alejandro Gomez - San Juan Capistrano CA, US

Assignee:

Broadcom Corporation - Irvine CA

International Classification:

H03F 3/21
H03F 3/217

US Classification:

330251, 330291

Abstract:

A system includes a weighting element, a transconductance circuit, a feedback loop, and an auxiliary loop. In some implementations, the transconductance circuit may accept an input and provide a first portion of an output for amplification at a variable amplification level to generate an amplifier output. The feedback loop may provide a portion of the amplifier output as a first feedback to the input. The first feedback may be associated with an impedance that may vary with the amplification level. The auxiliary loop may provide a second feedback to the input to reduce the dependence of the impedance on the amplification level.