Kevin Gang Chen

US Patent:

6624945, Sep 23, 2003

Filed:

Feb 12, 2001

Appl. No.:

09/781825

Inventors:

Shanhui Fan - Palo Alto CA
John D. Joannopoulos - Belmont MA
George B. Kenney - Medfield MA
Michal Lipson - Waltham MA
Kevin M. Chen - Cambridge MA
Lionel C Kimerling - Concord MA

Assignee:

Massachusetts Institute of Technology - Cambridge MA

International Classification:

G02B 2700

US Classification:

359584, 359587, 359580, 359578, 359577

Abstract:

An electromagnetic wavelength filter that allows the transmission of electromagnetic energy within a narrow range of wavelengths while reflecting incident electromagnetic energy at other wavelengths. The filter includes at least one cavity region; and at least two reflectors surrounding the at least one cavity region, at least one of the reflectors being an omni-directional reflector. The omni-directional reflector includes a structure with a surface and an index of refraction variation perpendicular to the surface, and the omni-directional reflector is specifically configured to exhibit high omni-directional reflection for a predetermined range of frequencies of incident electromagnetic energy for any angle of incidence and any polarization.

US Patent:

6846509, Jan 25, 2005

Filed:

Nov 21, 2001

Appl. No.:

09/991438

Inventors:

Kevin M. Chen - Santa Clara CA, US
Lionel C. Kimerling - Concord MA, US

Assignee:

Massachusetts Institute of Technology - Cambridge MA

International Classification:

B05D 302
B05D 512
C23C 1400

US Classification:

427 66, 427 74, 4271263, 427166, 427380, 20419215, 20419226

Abstract:

A system for producing Erbium Oxide thin films with increased photoluminescence. The system includes a depositing stage for forming Erbium Oxide molecules by reacting Erbium sputtered atoms with Oin a gas phase and creating the Erbium Oxide thin film by depositing the Erbium Oxide molecules on a substrate coated with Silicon Oxide. The system further includes an annealing stage for annealing the Erbium Oxide thin films by utilizing a low temperature treatment for a specified amount of time and temperature followed by a high temperature treatment for another specified amount of time and temperature, wherein the crystallinity of the thin films has improved.

US Patent:

20060078293, Apr 13, 2006

Filed:

Feb 4, 2005

Appl. No.:

11/051415

Inventors:

Richard Wyman - Sunnyvale CA, US
Kevin (Jean-Huang) Chen - Cupertino CA, US

International Classification:

H04N 5/783

US Classification:

386068000, 386131000

Abstract:

A system and method that repeat video images in a deinterlacing system. The method comprises detecting a signal requesting an input video image be repeated and determining the desired number of repetitions. The input video image may then be processed to generate an output video image and the output video image may be repeated the desired number of repetitions. The input video images following the repeated image may be held until the repeating is completed, and may then be processed and displayed. Repeating the video image may be utilized to achieve different playback modes such as, for example, slow motion, pause, and video rate conversion.

US Patent:

20220404049, Dec 22, 2022

Filed:

Jun 17, 2021

Appl. No.:

17/350787

Inventors:

- Mountain View CA, US
Kristoffer J. Donhowe - Mountain View CA, US
Ramya Bhagavatula - Palo Alto CA, US
Jeffrey Gleeson - Danville CA, US
Kevin Chen - Menlo Park CA, US

Assignee:

Google LLC - Mountain View CA

International Classification:

F24F 11/47
F24F 11/58
F24F 11/62

Abstract:

Techniques for performing an emissions demand response event are described. In an example, a cloud-based HVAC control server system receives an emissions rate forecast for a predefined future time period. Using the emissions rate forecast, a plurality of emissions differential values are created for a plurality of points in time during the predefined future time period. The emissions differential values represent a change in predicted emissions over time. Based on the plurality of emissions differential values and a predefined maximum number of emissions demand response events, an emissions demand response event is generated during the predefined future time period. The cloud-based HVAC control server system then causes a thermostat to control an HVAC system in accordance with the generated emissions demand response event.

US Patent:

20220404050, Dec 22, 2022

Filed:

Jun 17, 2021

Appl. No.:

17/350793

Inventors:

- Mountain View CA, US
Kristoffer J. Donhowe - Mountain View CA, US
Ramya Bhagavatula - Palo Alto CA, US
Jeffrey Gleeson - Danville CA, US
Kevin Chen - Menlo Park CA, US

Assignee:

Google LLC - Mountain View CA

International Classification:

F24F 11/47
F24F 11/58
F24F 11/62

Abstract:

Techniques for performing an emissions demand response (EDR) event are described. In an example, a cloud-based HVAC control system may obtain a first emissions rate forecast and generate an EDR event with a start time and end time based on the first emissions rate forecast. The EDR event may then be transmitted to a thermostat and stored in a memory of the thermostat. At the start time, the thermostat may commence controlling an HVAC system according to the EDR event. After the start time and prior to the end time, the cloud-based HVAC control system may obtain a second emissions rate forecast and generate a modified EDR event with a modified end time. The modified EDR event may be transmitted to the thermostat before the end time and/or the modified end time whereupon the thermostat may control the HVAC system accordingly until the modified end time is reached.

US Patent:

20220404051, Dec 22, 2022

Filed:

Jun 17, 2021

Appl. No.:

17/350801

Inventors:

- Mountain View CA, US
Kristoffer J. Donhowe - Mountain View CA, US
Ramya Bhagavatula - Palo Alto CA, US
Jeffrey Gleeson - Danville CA, US
Kevin Chen - Menlo Park CA, US

Assignee:

Google LLC - Mountain View CA

International Classification:

F24F 11/47
F24F 11/58
F24F 11/63

Abstract:

Techniques for performing an emissions demand response event are described. In an example, a cloud-based HVAC control server system obtains a history of emissions rates. Based on the history of emissions rates, a future time period of predicted high emissions is identified. An emission demand response event participation level of an account mapped to a thermostat is determined for the future time period of predicted high emissions. The emissions demand response event participation level may be one of a plurality of emissions demand response event participation levels. based on the emissions demand response event participation level of the account, an emissions demand response event is generated during the future time period of predicted high emissions. The cloud-based HVAC control server system then causes a thermostat to control an HVAC system in accordance with the generated emissions demand response event.

US Patent:

20220404052, Dec 22, 2022

Filed:

Jun 17, 2021

Appl. No.:

17/350808

Inventors:

- Mountain View CA, US
Kristoffer J. Donhowe - Mountain View CA, US
Ramya Bhagavatula - Palo Alto CA, US
Jeffrey Gleeson - Danville CA, US
Kevin Chen - Menlo Park CA, US

Assignee:

Google LLC - Mountain View CA

International Classification:

F24F 11/47
F24F 11/58
F24F 11/63

Abstract:

Techniques for performing an emissions demand response event are described. In an example, a cloud-based HVAC control server system obtains an emissions rate forecast for a predefined future time period. Using the emissions rate forecast, a future emissions rate event during the predefined future time period is identified. The future emissions rate event comprises an indication of predicted magnitude and a time period when a predicted emissions rate will be at an increased or decreased level. A confidence value indicating a certainty of the future emissions rate event occurring as predicted is determined. Based on the identified future emissions rate event and the confidence value, an emissions demand response event having a start time and an end time during the future emissions rate event is generated. The cloud-based HVAC control server system then causes a thermostat to control an HVAC system in accordance with the generated emissions demand response event.

US Patent:

20220351702, Nov 3, 2022

Filed:

Feb 18, 2022

Appl. No.:

17/676034

Inventors:

- Cupertino CA, US
Gary Ian BUTCHER - Los Gatos CA, US
Kevin Will CHEN - Cupertino CA, US
Matthew J. SUNDSTROM - Campbell CA, US
Christopher Patrick FOSS - San Francisco CA, US

International Classification:

G09G 5/10
G06F 3/04883
G06F 3/01
G06F 3/04847
G06F 3/147

Abstract:

An electronic device having a touch-screen display detects a first input on the display while displaying a first user interface on the display. In response to detecting the first input on the display, the device enters a flashlight mode. Entering the flashlight mode includes replacing the first user interface with a first flashlight user interface. The first flashlight user interface has a first total lumen output and a first luminance that is substantially uniform over the display. The device determines whether brightness change criteria are met, and in accordance with a determination that the brightness change criteria are met, displays a second flashlight user interface having a second total lumen output greater than the first total lumen output and a second luminance that is substantially uniform over the display.