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US 11,630,120 B2Granted
System and method for detecting wrist-device wearing location
AssigneeKoninklijke Philips N.V.
InventorsPatrick Kechichian, Warner Rudolph Theophile Ten Kate
Life of this patent
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Abstract
In one embodiment, an apparatus (12) that samples a signal obtained or derived from an accelerometer, filters the samples, accumulates the filtered samples, and determines which limb the apparatus is associated with based on a comparison of the filtered accumulated samples and a threshold set.
Claims12
A wrist-worn apparatus configured to be interchangeably worn on a user's left limb or the user's right limb, comprising:
- an accelerometer configured to generate a signal indicative of movement by the user of the limb on which the wrist-worn apparatus is worn;
- a memory comprising instructions;
- a processor configured to execute the instructions to:
- sample the signal obtained or derived from the accelerometer to generate a plurality of accelerometer samples, each of the plurality of accelerometer samples comprising a respective sub-value;
- compare each of the plurality of accelerometer samples to a first threshold of a threshold set, and only retaining those of the compared plurality of accelerometer samples that exceed the first threshold, wherein the first threshold is configured such that the retained plurality of accelerometer samples are isolated distribution tails of the signal obtained or derived from the accelerometer, and wherein the first threshold corresponds to a gravitational norm value plus a predefined margin;
- accumulate the retained samples over a period of time the respective sub-values of the accumulated retained samples collectively comprising a first value over the period of time;
- compare the first value with a second threshold and a third threshold of the threshold set;
- and
- determine that the apparatus is either associated with a left limb or a right limb based on the comparison, wherein the apparatus is associated with the right limb when the first value exceeds the second threshold of the threshold set, and wherein the apparatus is associated with the left limb when the first value falls below the third threshold of the threshold set;
- and
- a display configured to provide the determination that the apparatus is either associated with a left limb or a right limb.
8 more elements
A method for determining whether a wrist-worn apparatus is associated with a left limb or a right limb of a user, comprising:
- providing a wrist-worn apparatus configured to be interchangeably worn on a user's left limb or the user's right limb, the wrist-worn apparatus comprising:
- (i) an accelerometer configured to generate a signal indicative of movement by the user of the limb on which the wrist-worn apparatus is worn;
- (ii) a memory comprising instructions;
- (iii) a processor;
- and (iv) a display;
- sampling, by the processor, the signal obtained or derived from the accelerometer to generate a plurality of accelerometer samples, each of the plurality of accelerometer samples comprising a respective sub-value;
- comparing, by the processor, each of the plurality of accelerometer samples to a first threshold of a threshold set, and only retaining those of the compared plurality of accelerometer samples that exceed the first threshold, wherein the first threshold is configured such that the retained plurality of accelerometer samples are isolated distribution tails of the signal obtained or derived from the accelerometer, and wherein the first threshold corresponds to a gravitational norm value plus a predefined margin;
- accumulating, by the processor, the retained samples over a period of time, the respective sub-values of the accumulated retained samples collectively comprising a first value over the period of time;
- comparing, by the processor, the first value with a second threshold and a third threshold of the threshold set;
- determining, by the processor, that the apparatus is either associated with a left limb or a right limb based on the comparison, wherein the apparatus is associated with the right limb when the first value exceeds the second threshold of the threshold set, and wherein the apparatus is associated with the left limb when the first value falls below the third threshold of the threshold set;
- and
- providing, via the display, the determination that the apparatus is either associated with a left limb or a right limb.
9 more elements
Dependencies are inferred from the claim text.