Orientation sensing switch system for a head-mounted electronic device
First Claim
1. A head-mounted switch system comprising:
- a mount portion rotatable around a rotation axis;
an electronic device mounted to the mount portion;
a power source configured to switchably supply power to the electronic device;
a plurality of accelerometers operable to measure an acceleration of the mount portion; and
a processor configured to receive acceleration data from the plurality of accelerometers,wherein the processor is configured to determine whether the mount portion is rotating around the rotation axis based on the acceleration data, the processor is programmed to change a power state of the electronic device when the mount portion is rotating around the rotation axis,the mount portion rotates around a first rotation axis in a clockwise or counterclockwise direction and a second rotation axis around a second rotation axis in an upward or downward direction,at least one of the plurality of accelerometers is positioned at a first distance from the rotation axis, andat least another one of the plurality of accelerometers is positioned at a second distance from the rotation axis different from the first distance, andthe processor is configured to determine whether a measured acceleration corresponds to a rotation of the mount portion around the rotation axis or a movement of a user'"'"'s head associated with the mount portion, based on measured accelerations of both the one and other accelerometers, andthe processor includes a module for calculating a ratio,wherein the ratio is calculated between the measured accelerations of the one and other accelerometers, andwhen the ratio is approximately equal to predetermined ratio between the first and second distances, the module determines that the measured accelerations correspond to a rotation of the mount portion.
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Accused Products
Abstract
Helmet-mounted switch systems are disclosed. A helmet-mounted switch system comprises a mount portion, an electronic device, a power source, at least one accelerometer, and a processor. The mount portion is rotatable around a rotation axis. The electronic device is mounted to the mount portion. The power source is configured to switchably supply power to the electronic device. The at least one accelerometer is operable to measure an acceleration of the mount portion. The system may also include at least one gyroscope operable to measure a rotation of the mount portion. The processor is configured to receive acceleration data. The processor is programmed to determine whether the mount portion is rotating around the rotation axis based on the acceleration data. The processor is programmed to change a power state of the electronic device when the mount portion is rotating around the rotation axis.
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Citations
16 Claims
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1. A head-mounted switch system comprising:
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a mount portion rotatable around a rotation axis; an electronic device mounted to the mount portion; a power source configured to switchably supply power to the electronic device; a plurality of accelerometers operable to measure an acceleration of the mount portion; and a processor configured to receive acceleration data from the plurality of accelerometers, wherein the processor is configured to determine whether the mount portion is rotating around the rotation axis based on the acceleration data, the processor is programmed to change a power state of the electronic device when the mount portion is rotating around the rotation axis, the mount portion rotates around a first rotation axis in a clockwise or counterclockwise direction and a second rotation axis around a second rotation axis in an upward or downward direction, at least one of the plurality of accelerometers is positioned at a first distance from the rotation axis, and at least another one of the plurality of accelerometers is positioned at a second distance from the rotation axis different from the first distance, and the processor is configured to determine whether a measured acceleration corresponds to a rotation of the mount portion around the rotation axis or a movement of a user'"'"'s head associated with the mount portion, based on measured accelerations of both the one and other accelerometers, and the processor includes a module for calculating a ratio, wherein the ratio is calculated between the measured accelerations of the one and other accelerometers, and when the ratio is approximately equal to predetermined ratio between the first and second distances, the module determines that the measured accelerations correspond to a rotation of the mount portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for operating a head-mounted switch system, the head-mounted switch system including a mount portion rotatable around a rotation axis and an electronic device mounted to the mount portion, the method comprising the steps of:
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measuring an acceleration of the mount portion; determining whether the mount portion is rotating around the rotation axis based on the measured acceleration; and
changing a power state of the electronic device when the mount portion is rotating around the rotation axis;wherein the measuring step comprises; measuring the acceleration of one of the mount portion and the electronic device with a first accelerometer positioned at a first distance from the rotation axis, and measuring the acceleration of one of the mount portion and the electronic device with a second accelerometer positioned at a second distance from the rotation axis different from the first distance; and the determining step comprises; determining whether the measured acceleration corresponds to a rotation of the mount portion around the rotation axis or a movement of a user'"'"'s head associated with the mount portion, based on measured accelerations of both, the first and second accelerometers, and wherein a ratio is calculated between the measured accelerations of the first and second accelerometers, and when the ratio is approximately equal to a predetermined ratio between the first and second distances, the processor determines that the measured accelerations correspond to a rotation of the mount portion. - View Dependent Claims (11, 12, 13, 14)
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15. An electronic device configured to be mounted to a mount portion of a helmet, the mount portion rotatable around a rotation axis, the electronic device comprising:
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a power source configured to switchably supply power to the electronic device; a plurality of accelerometers coupled to the electronic device for measuring the acceleration of the electronic device, a first accelerometer positioned to measure acceleration at a first distance from the rotation axis, and a second accelerometer positioned to measure acceleration at a second distance from the rotation axis; a processor configured to receive acceleration data from the plurality of accelerometers, wherein the processor is configured to determine whether the mount portion is rotating around the rotation axis based on the acceleration data measured by both, the first and second accelerometers; and
the processor is configured to change a power state of the electronic device when the mount portion is rotating around the rotation axis,wherein a ratio is calculated by a module in the processor between the measured accelerations of the first and second accelerometers, and when the ratio is approximately equal to a predetermined ratio between the first and second distances, the module determines that the measured accelerations correspond to a rotation of the mount and wherein the mount portion rotates around a first rotation axis in a clockwise or counterclockwise direction and a second rotation axis around a second rotation axis in an upward or downward direction. - View Dependent Claims (16)
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Specification