Wearable electronic device
A consumer product that is a portable and, in some cases, a wearable electronic device. The wearable electronic device may have functionalities including: keeping time; monitoring a user's physiological signals and providing health-related information based on those signals; communicating with other electronic devices or services; visually depicting data on a display; gather data form one or more sensors that may be used to initiate, control, or modify operations of the device; determine a location of a touch on a surface of the device and/or an amount of force exerted on the device, and use either or both as input.
1. A wearable electronic device comprising:
a housing defining a front opening;
a band attached to the housing and configured to secure the wearable electronic device to a user;
a cover positioned over the front opening;
a display positioned below the cover;
a touch sensor positioned below the cover and configured to detect a location of a touch input on the cover;
a force sensor positioned below the cover at least partially surrounding the display and configured to detect a magnitude of a force of the touch input on the cover; and
a haptic device configured to provide a tactile output along an exterior surface of the housing in response to the magnitude of the force exceeding a threshold.
2. The wearable electronic device of claim 1 , wherein:
the force sensor comprises a compressible layer positioned between the cover and the housing; and
the force sensor is configured to form a gasket between the cover and the housing.
3. The wearable electronic device of claim 2 , wherein:
the force sensor comprises:
a first set of electrodes positioned along a first side of the compressible layer; and
a second set of electrodes positioned along a second side of the compressible layer.
4. The wearable electronic device of claim 3 , wherein:
the first set of electrodes is fixed with respect to the cover; and
the second set of electrodes is fixed with respect to the housing.
5. The wearable electronic device of claim 1 , wherein the force sensor is further configured to detect the location of the touch input on the cover.
6. The wearable electronic device of claim 1 , wherein detecting the magnitude of the force comprises detecting a displacement of the cover.
7. The wearable electronic device of claim 1 , wherein:
the housing further comprises a rear opening; and
the wearable electronic device further comprises:
a biosensor module aligned with the rear opening and configured to produce a sensor signal;
a processing unit configured to compute a health metric based on the sensor signal, the health metric including one or more of: a heart rate, a respiration rate, a blood oxygenation level, and a blood volume estimate; and
a rear cover positioned over the biosensor module and having a convex shape that extends toward the body of the user when the wearable electronic device is worn.
8. The wearable electronic device of claim 7 , wherein:
the biosensor module comprises:
an array of light sources configured to emit light into a body of the user and including a first light source and a second light source; and
a photodetector configured to receive light reflected from the body and produce the sensor signal;
the rear cover defines a set of windows, each window corresponding to either a light source of the array of light sources or the photodetector;
the first light source and the photodetector form a first photoplethysmography (PPG) sensor;
the second light source and the photodetector form a second PPG sensor; and
the health metric is computed using the first PPG sensor and the second PPG sensor.
9. An electronic watch comprising:
a housing;
a watch band attached to the housing;
a display positioned at least partially within the housing;
a touch sensor positioned over the display and configured to detect a location of a touch input on the electronic watch;
a force sensor at least partially surrounding the display and configured to detect a magnitude of a force of the touch input on the electronic watch;
a biosensor module disposed within the housing; and
a haptic device disposed within the housing and comprising a moving mass configured to produce a haptic output along an external surface of the electronic watch in response to the touch input.
10. The electronic watch of claim 9 , wherein:
the moving mass is configured to translate along a linear path to produce the haptic output;
the moving mass comprises:
a frame; and
a magnet array attached to the frame; and
the haptic device further comprises an electrical coil that is configured to induce the translation of the moving mass.
11. The electronic watch of claim 10 , wherein the electrical coil is configured to induce a Lorentz force on the magnet array to induce the translation.
12. The electronic watch of claim 9 , wherein the haptic device is configured to selectively produce either a single pulse haptic output or a vibration haptic output.
13. The electronic watch of claim 9 , wherein:
the haptic output is a first haptic output; and
the haptic device is configured to produce a second haptic output in response to receiving an alert.
14. The electronic watch of claim 11 , wherein:
the housing defines a speaker port positioned along a first sidewall; and
the housing defines a microphone port positioned along the first sidewall.
15. The electronic watch of claim 14 , wherein:
the housing defines a first aperture along a second sidewall opposite to the first sidewall;
the electronic watch further comprises a crown positioned within the first aperture;
the housing defines a second aperture along the second sidewall; and
the electronic watch further comprises a button positioned within the second aperture.
16. A wearable electronic device comprising:
a housing defining a front opening opposite to a rear portion;
a watch band attached to the housing;
a cover positioned over the front opening of the housing;
a touch sensor attached to the cover and configured to detect a location of a touch input on the cover;
a display attached to the cover;
a force sensor attached to the cover around a perimeter of the display and configured to detect a magnitude of a force of the touch input on the cover;
a haptic device configured to provide a tactile output along an exterior surface of the housing in response to the touch input; and
a biosensor module positioned at least partially within the rear portion of the housing.
17. The wearable electronic device of claim 16 , wherein:
the force sensor comprises:
a first set of electrodes positioned along a first side of the force sensor;
a second set of electrodes positioned along a second side of the force sensor; and
a compressible layer positioned between the first and second sets of electrodes.
18. The wearable electronic device of claim 17 , wherein:
the cover is attached to the first side of the force sensor;
the force sensor is attached to the housing along the second side of the force sensor;
the compressible layer is formed from silicone; and
the force sensor is configured to form a gasket between the cover and the housing.
19. The wearable electronic device of claim 16 , wherein:
the cover defines a groove formed around a perimeter portion of an inner surface of the cover opposite to an exterior surface of the cover; and
an antenna is positioned within the groove and configured to facilitate wireless communications with an external device.
20. The wearable electronic device of claim 19 , wherein:
an opaque mask is attached to the inner surface of the cover;
the opaque mask defines an opening through which the display is visible; and
a boundary of the opening of the opaque mask is inward of the groove formed in the inner surface of the cover.