Michael A Chapman

US Patent:

20230039827, Feb 9, 2023

Filed:

Aug 4, 2021

Appl. No.:

17/393693

Inventors:

- Menlo Park CA, US
Nicole Hu - Mountain View CA, US
Chengwei Zhai - Menlo Park CA, US
Deepak Pant - Menlo Park CA, US
Jaskanwal Chhabra - Menlo Park CA, US
Lynne Burks - Menlo Park CA, US
Michael Chapman - Menlo Park CA, US
Ojas Rege - Menlo Park CA, US
Abhineet Gupta - Menlo Park CA, US
Shabaz Patel - Menlo Park CA, US
Youngsuk Kim - Menlo Park CA, US

International Classification:

G06Q 10/06
G06F 11/00
G06F 3/0482

Abstract:

Methods, systems, and computer programs are presented for estimating downtime and recovery time after a disaster. One method includes an operation for calculating component fragility functions for components of a facility that are vulnerable to damage after a disaster. Further, the method includes calculating component recovery functions for the components of the facility. The component recovery functions indicate a probability of recovery after a disaster over time. The method further includes operations for calculating a facility fragility function and a facility recovery function based on the component fragility functions and the component recovery functions, and for determining a downtime for the facility for a given intensity associated with the disaster. Further, the method includes an operation for causing presentation of the downtime for the facility on a user interface (UI).

US Patent:

20150061762, Mar 5, 2015

Filed:

Feb 27, 2014

Appl. No.:

14/192488

Inventors:

- Wilmington DE, US
Frédéric Roger - Santa Clara CA, US
Michael Chapman - San Francisco CA, US

International Classification:

H03F 1/32
H03F 3/189
H03F 3/24

US Classification:

330149

Abstract:

A circuit in a transmitter with multiple power amplifiers includes multiple individual linearizer circuits each receiving a corresponding input signal and each providing a conditioned input signal to a corresponding power amplifier, The linearizer circuit each include: (a) a pre-distortion circuit receiving (i) the corresponding input signal and (ii) the output signal of a corresponding power amplifier, and providing a pre-distortion signal; (b) a cancelation circuit receiving an interfering signal and providing a cancelation signal; and (c) a combination circuit that combines the cancelation signal and the pre-distortion signal to provide a conditioned input signal to the corresponding power amplifier.