University of Washington

Microsoft Technology Licensing, LLC

Microsoft Technology Licnesing, LLC

Gabriel Adam Cohn

Shwetak N Patel

Desney S Tan

Matthew Stephen Reynolds

Daniel Morris

Nicolas Villar

Gregory Ray Smith

Sidhant Gupta

T Scott Saponas

Eric C Larson

Sailaja Malladi

Ronald E Paulsen

Timothy B Campbell

Sumit Basu

Jonathan Bernard Lester

David Charles Kale

Scott T Saponas

David C Kale

A wrist-worn device heart-monitoring device is presented. The wrist-worn heart-monitoring device includes a radial tonometer configured to output a pressure signal indicating a pulse pressure wave at a user's wrist, two or more electrodes configured to output an electrical signal indicating a user's heart has been commanded to contract, and a microphone configured to output an audio signal indicating a closing of a user's aortic valve. The wrist-worn heart-monitoring device further includes a pulse transit time monitor configured to calculate a pre-ejection period of the user's heart based on at least the pressure, electrical, and audio signals, and calculate a pulse transit time based on at least the pre-ejection period, the pressure signal, and the electrical signal.

Wrist-worn pulse transit time sensor

A wrist-worn pressure sensing device includes a pressure sensor. The wrist-worn pressure sensing device also includes a first strap that sets the position of the pressure sensor on a wearer's wrist and a second strap that engages with the first strap to adjust the overall length of the strap without moving the set position of the pressure sensor on the wearer's wrist.

Sizable wrist-worn pressure sensing device

Examples of automatic valve shutoff systems are described which may include an actuation device including an actuator and a valve attachment portion. The valve attachment portion may be configured for attachment with an existing valve in a fluid or compressible gas supply line. The system may further include a controller coupled to the actuation device, wherein the controller is configured to initiate a valve shutoff process in response to a wireless signal. Wake-up circuitry may be coupled to the controller and configured to monitor the supply line for vibrations and activate the controller in response to the vibrations.

Automatic valve shutoff device and methods

Apparatuses, receivers, systems and methods for receiving data via a power line infrastructure. An exemplary apparatus includes a base station configured to receive a signal from a power line of a structure by coupling to the power line through an electrical outlet. The base station may include an impedance matching circuit configured to match an impedance of the power line of the structure, and a receiver coupled to the impedance matching circuit. The receiver may be configured to demodulate the signal received from the power line of the structure, convert the demodulated signal into a digital signal, and provide the digital signal to a decoder.

Receiver, apparatus, and methods for wirelessly receiving data from a power infrastructure

Apparatuses, sensor nodes, systems and methods for modulating and transmitting sensor data wirelessly to an existing power line network are described. An apparatus may include a microcontroller having an oscillator and an input/output buffer. The microcontroller may process an electrical signal and the input/output buffer may drive a digital signal. The apparatus may include a transmitter utilizing the oscillator and the input/output buffer of the microcontroller. The transmitter may include a resonator coupled to the oscillator and modulation circuitry coupled to the oscillator and resonator. The resonator may modulate a frequency of the oscillator responsive to a modulation signal based on the processed electrical signal. The transmitter may further include an antenna coupled to the input/output buffer of the microcontroller for transmission of the data, and a resonant tank coupled to an output of the input/output buffer to provide an analog signal to the antenna.

Sensor nodes, apparatuses, and methods for wirelessly transmitting data to a power infrastructure

A human input system is described herein that provides an interaction modality that utilizes the human body as an antenna to receive electromagnetic noise that exists in various environments. By observing the properties of the noise picked up by the body, the system can infer human input on and around existing surfaces and objects. Home power lines have been shown to be a relatively good transmitting antenna that creates a particularly noisy environment. The human input system leverages the body as a receiving antenna and electromagnetic noise modulation for gestural interaction. It is possible to robustly recognize touched locations on an uninstrumented home wall using no specialized sensors. The receiving device for which the human body is the antenna can be built into common, widely available electronics, such as mobile phones or other devices the user is likely to commonly carry.

Sensing user input using the body as an antenna

Growing community of inventors

Sammamish, WA, United States of America

Gabriel Adam Cohn