Tong S Chen

US Patent:

6498532, Dec 24, 2002

Filed:

Jan 12, 2001

Appl. No.:

09/759736

Inventors:

Yehuda G. Goren - Palo Alto CA
Charles E. Jensen - Carmichael CA
Donald R. Gagne - Placerville CA
Tong Chen - Mountain View CA
Philip M. Lally - Palo Alto CA

Assignee:

Teledyne Technologies Incorporated - Los Angeles CA

International Classification:

H03F 358

US Classification:

330 43, 330149, 315 393

Abstract:

An amplifier system. The amplifier system includes a vacuum tube amplifier, an electron source voltage modulation circuit, and a linearization circuit. The vacuum tube amplifier includes an input signal terminal and an output signal terminal. The electron source voltage modulation circuit includes an input terminal coupled to one of the input signal terminal and the output signal of the vacuum tube amplifier, and includes an output terminal coupled to one of an electron source of the vacuum tube amplifier and an interaction region of the vacuum tube amplifier. The linearization circuit is coupled to the input signal terminal of the vacuum tube amplifier. In conjunction with or instead of the electron source voltage modulation circuit, the amplifier circuit may additionally include an electron beam control circuit, including an input terminal coupled to one of the input signal terminal and the output signal of the vacuum tube amplifier, and including an output terminal coupled to the electron source of the vacuum tube amplifier.

US Patent:

20220330410, Oct 13, 2022

Filed:

Apr 13, 2021

Appl. No.:

17/229729

Inventors:

- Cupertino CA, US
Michael K. McCord - San Francisco CA, US
Tong Chen - Fremont CA, US

International Classification:

H05B 47/20
H02J 50/10
H04B 10/11
H04B 5/00

Abstract:

First and second parts of an optical component may be spatially separated and not electrically connected. A passive side may contain an optical element. An active side may contain a light-emitting device. To detect damage to the optical element, passive side circuitry that is associated with the optical element may monitor a fail-safe resistor on the optical element for changes in resistance. The circuitry may use a passive side near-field communications antenna to transmit information such as information on the fail-safe resistor to active side circuitry that is associated with the light-emitting device using near-field communications. The active side circuitry can receive the transmitted information using an active side near-field communications antenna and can adjust the light-emitting device accordingly. The active side circuitry can also monitor the active side near-field communications antenna to detect when the passive side and active side antennas have been moved apart.

US Patent:

20220244041, Aug 4, 2022

Filed:

Feb 4, 2021

Appl. No.:

17/167218

Inventors:

- Cupertino CA, US
Daryl I. Vulis - San Francisco CA, US
Tong Chen - Fremont CA, US

International Classification:

G01B 11/14
G01B 9/02

Abstract:

An optical proximity sensor includes an optical path extender that extends an optical path length of the optical proximity sensor without a corresponding extension of a geometric path length of the optical proximity sensor. The optical path extender may be a high-refractive index material positioned along the optical path through the optical proximity sensor. The optical path extender may include one or more redirection features configured to change a direction of the light traveling within the optical proximity sensor. The optical path extender may include a photonic component configured to simulate an extension of the geometric path within an optical proximity sensor by applying a momentum-dependent transfer function to the light traveling through it.

US Patent:

20230087411, Mar 23, 2023

Filed:

Sep 23, 2021

Appl. No.:

17/483660

Inventors:

- Cupertino CA, US
Tong Chen - Fremont CA, US
Mark T. Winkler - San Jose CA, US
Zachary M. Beiley - Oakland CA, US

International Classification:

H01L 25/16

Abstract:

An electronic device may include an infrared sensor with light sources and a quantum film photodetector. The light sources may emit short-wavelength infrared (SWIR) light through a display panel and the photodetector may receive the SWIR light through the panel after reflection off an object. The light sources and an integrated circuit may be mounted to a wall of a sensor module mounted to the panel. The module may include a lens. The photodetector may be disposed onto the rear wall, lens, integrated circuit, or display panel. The photodetector may include multiple types of quantum film to absorb different wavelengths of SWIR light. The SWIR light may pass through the display panel without distorting images emitted by the display panel. Using a quantum film in the photodetector may allow the photodetector to extend across a large surface area without unnecessarily increasing manufacturing cost for the device.

US Patent:

20190317639, Oct 17, 2019

Filed:

Apr 12, 2019

Appl. No.:

16/383036

Inventors:

- Cupertino CA, US
Mehmet Mutlu - Stanford CA, US
Omid Momtahan - Palo Alto CA, US
Tong Chen - Cupertino CA, US
Wenrui Cai - San Jose CA, US
Chau H. Nguyen - San Jose CA, US
Giovanni Gozzini - Berkeley CA, US
Michael K. McCord - San Francisco CA, US
Orit A. Shamir - San Francisco CA, US
Prashanth S. Holenarsipur - Fremont CA, US

International Classification:

G06F 3/042
G01B 9/02
H01S 5/183
G01P 3/36
G01S 17/50

Abstract:

Disclosed herein are electronic devices having touch input surfaces. A user's touch input or press on the touch input surface is detected using a set of lasers, such as vertical-cavity surface-emitting lasers (VCSELs) that emit beams of light toward the touch input surface. The user's touch causes changes in the self-mixing interference within the VCSEL of the emitted light with reflected light, such as from the touch input surface. Deflection and movement (e.g., drag motion) of the user's touch is determined from detected changes in the VCSELs' operation due to the self-mixing interference.

US Patent:

20190230194, Jul 25, 2019

Filed:

Jan 28, 2019

Appl. No.:

16/259116

Inventors:

- Cambridge MA, US
Frederick R. Shotton - Piedmont CA, US
Tong Chen - Brookline MA, US

Assignee:

Akamai Technologies Inc. - Cambridge MA

International Classification:

H04L 29/06
H04L 29/08
H04L 12/24

Abstract:

Described herein are improved systems, methods, and devices for delivering and managing metadata in a distributed computing platform such as a content delivery network (CDN) so as to configure content servers to handle client requests. The teachings hereof provide, among other things, scalable and configurable solutions for delivering and managing metadata, preferably by leveraging dynamically obtained control information. For example, in one embodiment, a given content server may store metadata, e.g., in a configuration file, that references dynamic, late-bound control information for use in satisfying dependencies. This dynamic control information can be requested by the CDN content server, typically from a remote host, when needed to parse and execute the metadata.

US Patent:

20180295214, Oct 11, 2018

Filed:

Apr 9, 2018

Appl. No.:

15/947913

Inventors:

- Cambridge MA, US
Frederick R. Shotton - Piedmont CA, US
Tong Chen - Brookline MA, US

Assignee:

Akamai Technologies, Inc. - Cambridge MA

International Classification:

H04L 29/06
H04L 29/08
H04L 12/24

Abstract:

Described herein are improved systems, methods, and devices for delivering and managing metadata in a distributed computing platform such as a content delivery network (CDN) so as to configure content servers to handle client requests. The teachings hereof provide, among other things, scalable and configurable solutions for delivering and managing metadata, preferably by leveraging dynamically obtained control information. For example, in one embodiment, a given content server may store metadata, e.g., in a configuration file, that references dynamic, late-bound control information for use in satisfying dependencies. This dynamic control information can be requested by the CDN content server, typically from a remote host, when needed to parse and execute the metadata.

US Patent:

20170078453, Mar 16, 2017

Filed:

Nov 2, 2016

Appl. No.:

15/341850

Inventors:

- Cambridge MA, US
Frederick R. Shotton - Piedmont CA, US
Tong Chen - Brookline MA, US

Assignee:

Akamai Technologies, Inc. - Cambridge MA

International Classification:

H04L 29/06
H04L 29/08
H04L 12/24

Abstract:

Described herein are improved systems, methods, and devices for delivering and managing metadata in a distributed computing platform such as a content delivery network (CDN) so as to configure content servers to handle client requests. The teachings hereof provide, among other things, scalable and configurable solutions for delivering and managing metadata, preferably by leveraging dynamically obtained control information. For example, in one embodiment, a given content server may store metadata, e.g., in a configuration file, that references dynamic, late-bound control information for use in satisfying dependencies. This dynamic control information can be requested by the CDN content server, typically from a remote host, when needed to parse and execute the metadata.

Address:

19428 Aurora Ave N UNIT 433, Shoreline, WA 98133

VIN:

JTDKB20U087772762

Make:

TOYOTA

Model:

PRIUS

Year:

2008