X Development LLC

Google Inc.

Siyuan Xin

Leo Francis Casey

Joel Fraser Atwater

Chetan Mahadeswaraswamy

Peter Light

Crystal Elayna Winston

Mehrdad Roosta

C O Lee Boyce, Jr

Raymond Daly

Peter Evans

Shuyu Wang

Benjamin K Yaffe

Eduardo Tinoco

Farbod Tabatabai

Jose Alex Rivas

Timothy Michael O'Connor

Toktam Nezakati Esmaeelzadeh

Robert John Schlaefli

Toktam Nezakati

Keith Thomas Williams

Methods, systems, and apparatus for an infrared and visible imaging system. In some implementations, Image data from a visible-light camera is obtained. A position of a device is determined based at least in part on the image data from the visible-light camera. An infrared camera is positioned so that the device is in a field of view of the infrared camera, with the field of view of the infrared camera being narrower than the field of view of the visible-light camera. Infrared image data from the infrared camera that includes regions representing the device is obtained. Infrared image data from the infrared camera that represents the device is recorded. Position data is also recorded that indicates the location and pose of the infrared camera when the infrared image data is acquired by the infrared camera.

Infrared and visible imaging system for monitoring equipment

A compound motor-generator system including a first motor-generator and a second motor-generator. The first motor generator includes a stator having a set of three-phase field windings and a first rotor disposed inside and coaxial with the stator and configured to rotate relative to the stator. The second motor-generator includes a rotational stator and a second rotor coupled to a common shaft with the rotor of the first motor-generator and disposed inside and coaxial to the rotational stator. The rotational stator is configured to rotate relative to the second rotor and at a higher rotational speed than the second rotor.

Super-synchronous motor/generator

Infrared and visible imaging system

Methods, systems, and apparatus, including computer programs stored on a computer-readable storage medium, for obtaining, from an electric field sensor, measurements of a net electric field resulting from a combination of respective electric fields from two or more electrical power conductors that are proximate to the electric field sensor. The apparatus detects a change in successive measurements of the net electric field. The apparatus determines, based on the change, that an electrical fault has occurred in one of the two or more electric power conductors. The apparatus sends to a server system, data indicating that the electrical fault has occurred in one of the two or more electric power conductors.

Ground fault detection in ungrounded power systems

Methods, systems, and apparatus, including computer programs stored on a computer-readable storage medium, for obtaining a reference phase signal that is synchronized with an alternating current (AC) phase of a multi-phase electrical power distribution system. The apparatus obtains output signals from sensors, each output signal representative of an electromagnetic emission detected by a respective sensor. The apparatus identifies, based on comparing respective phases of the output signals to the reference phase signal, a particular AC phase of the multi-phase electrical power distribution system associated with a source of the emissions. The apparatus provides an indication of the particular AC phase to a user.

Non-contact detection of electrical energy

Infrared and visible imaging system for device identification and tracking

A method includes receiving, through a vertical polarization port of an orthogonal-mode transducer (OMT), a vertical polarized signal from a vertical polarization diplexer, and receiving, through a horizontal polarization port of the OMT, a horizontal polarized signal from a horizontal polarization diplexer. The method also includes receiving, through a common port of the OMT, a circular polarized signal comprising the vertical and horizontal polarized signals. The common waveguide includes a septum polarizer configured to split or combine between the circular polarized signal, and the vertical polarized signal and the horizontal polarized signal.

Ortho-mode transducer and diplexer

An attenuation device inclusive of radio frequency (RF) absorber materials to reduce signal power in transmission systems involved in short range communication systems is described. The attenuation device is placed between a radio transmitter and an antenna in a transmission system. The attenuation device may be coated with protective material, and may have small dimensions such that the organization and dimensions of the transmission system are not significantly modified. The attenuation device reduces the power of a signal to be transmitted to a receiver, and has a good return loss indicative of a relatively low mismatch with the antenna.

Attenuation device in transmitter system

Growing community of inventors

Los Altos, CA, United States of America

Siyuan Xin