Method and system for calibrating a pedometer
First Claim
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1. A head-mounted electronic device comprising:
- a pair of glasses;
an inertial motion unit including an accelerometer mounted on the pair of glasses;
a location data unit mounted in the head-mounted electronic device;
an output element mounted in the head-mounted electronic device for providing distance information to a user, wherein the output element is mounted on the pair of glasses and is operable to provide a visual output to a user;
a processor mounted in the head-mounted electronic device and communicatively coupled to the inertial motion unit and the location data unit;
a non-transitory, computer readable media mounted in the head-mounted electronic device comprising instructions to cause the processor to perform the steps of providing a distance output to the output element based on data from the inertial motion unit and the location data unit, wherein the distance output is based on the vertical movement of the accelerometer using a stride length and a cadence determined from the vertical movement; and
a memory mounted in the head-mounted electronic device and coupled to the processor;
wherein the location data unit comprises a GPS unit, and wherein the non-transitory, computer readable media mounted in the head-mounted electronic device further comprises instructions to cause the processor to provide the distance output based on data from the GPS unit, and based on data from the inertial motion unit when the GPS unit GPS signal is lost.
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Abstract
A head-mounted electronic device includes an inertial motion unit, a location data unit, and an output element. The head-mounted electronic device also includes a processor and a memory coupled to the processor.
34 Citations
18 Claims
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1. A head-mounted electronic device comprising:
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a pair of glasses; an inertial motion unit including an accelerometer mounted on the pair of glasses; a location data unit mounted in the head-mounted electronic device; an output element mounted in the head-mounted electronic device for providing distance information to a user, wherein the output element is mounted on the pair of glasses and is operable to provide a visual output to a user; a processor mounted in the head-mounted electronic device and communicatively coupled to the inertial motion unit and the location data unit; a non-transitory, computer readable media mounted in the head-mounted electronic device comprising instructions to cause the processor to perform the steps of providing a distance output to the output element based on data from the inertial motion unit and the location data unit, wherein the distance output is based on the vertical movement of the accelerometer using a stride length and a cadence determined from the vertical movement; and a memory mounted in the head-mounted electronic device and coupled to the processor; wherein the location data unit comprises a GPS unit, and wherein the non-transitory, computer readable media mounted in the head-mounted electronic device further comprises instructions to cause the processor to provide the distance output based on data from the GPS unit, and based on data from the inertial motion unit when the GPS unit GPS signal is lost. - View Dependent Claims (2, 3, 4, 5, 6, 9)
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7. An inertial motion system for a head-mounted electronic device, the inertial motion system comprising:
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a head-mounted electronic device comprising; an accelerometer for producing signals indicative of acceleration; an atmospheric pressure sensor for producing signals indicative of altitude; a gyroscope for producing signals indicative of direction changes; and a magnetometer for producing signals indicative of a compass direction; a GPS location unit; and a non-transitory, computer readable medium, communicatively coupled to the accelerometer, the atmospheric pressure sensor, the gyroscope and the magnetometer, and comprising instructions configured to determine route data from the signals indicative of acceleration from the accelerometer and at least one of the signals indicative of compass direction from the magnetometer and the signals indicative of direction changes from the gyroscope, and distance data based on the vertical movement of the accelerometer using a stride length and a cadence determined from the vertical movement. - View Dependent Claims (8, 10)
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11. A system for a glasses-mounted electronic device comprising:
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an inertial motion unit including; an accelerometer; an atmospheric pressure sensor; a gyroscope; and a magnetometer; an output element; a non-transitory, computer readable medium, communicatively coupled to the inertial motion unit and a source of location data, and comprising instructions configured to determine route data from the signals indicative of acceleration from the accelerometer and at least one of the signals indicative of compass direction from the magnetometer and the signals indicative of direction changes from the gyroscope, to provide a distance output to the output element based on data from the inertial motion unit and a location data unit, wherein the distance output is based on the vertical movement of the accelerometer using a stride length and a cadence determined from the vertical movement, wherein the distance output is based on the acceleration signals modified based on signals indicative of altitude, and wherein the distance output is based on data from the location unit, and based on data from the inertial motion unit in the absence of data from the location unit; and wherein the output element is glasses-mounted and is operable to provide a visual output to a user. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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Specification