Invensense, Inc.

Kerry Keal

Shang-Hung Lin

Yuan Zheng

Derek Keith Shaeffer

Erik E Anderson

David Sachs

Stephen Lloyd

David William Devries

Nathan Royer

Doug Vargha

An inertial measurement system is disclosed. The inertial measurement system has an accelerometer processing unit that generates a calibrated accelerometer data. The inertial measurement system further includes a magnetometer processing unit generates a calibrated magnetometer data, and a gyroscope processing unit generates a calibrated gyroscope data. Using the calibrated accelerometer data, the calibrated magnetometer data, and the calibrated gyroscope data, the inertial measurement system generates a heading angle error indicative of the accuracy of the heading angle error.

Heading confidence interval estimation

The present invention relates to a combination of a 6-axis motion sensor having a 3-axis gyroscope and a 3-axis linear accelerometer, a motion processor and a radio integrated circuit chip (IC), wherein the intelligence in the motion processor enables the communication between the motion sensor, the radio IC and the external network. The motion processor also enables power savings by adaptively controlling the data rate of the motion sensor, depending on the amount or speed of the motion activity.

Wireless motion processing sensor systems suitable for mobile and battery operation

Growing community of inventors

Santa Clara, CA, United States of America

Kerry Keal