Abstract: Systems and methods for performing damping analyses on a device are disclosed. The damping analyses may be used by a device in numerous ways. For example, in some embodiments, damping analyses are used to determine whether a device is being worn or held by a user. In some embodiments, damping analyses are used to determine which user of multiple users is wearing a device. In some embodiments, damping analyses are used to determine the body composition of a user who is holding or wearing the device. In some embodiments, damping analyses are used to determine how much force a user is applying to a device via a touch input. In some embodiments, damping analyses are used to determine whether and to what extent a sensor is in contact with a body of a user.

Abstract: An auxiliary electronic device attachable to a wearable electronic device. The auxiliary device includes a housing, electronic circuitry within the housing, and an attachment mechanism configured to attach the auxiliary electronic device to the wearable device while the device is being worn by a user. In some embodiments the electronic circuitry includes a power transmitting unit that can wirelessly transmit power to charge a rechargeable battery within the wearable electronic device. In some embodiments the attachment mechanism includes a pair of lugs that extend, from opposite ends of the housing, above the housing towards a center of the auxiliary device and are adapted to fit within corresponding recesses of the wearable electronic device.

Abstract: A method of manufacturing a co-molded housing component for an electronic device is disclosed. A component formed from a ceramic material is placed in a mold. The mold comprises a first section defining a first cavity configured to receive the first component, and a second section defining a second cavity that is in communication with the first cavity when the mold is closed. The second cavity is in the shape of a feature that is to be joined to the ceramic material. A polymer material is injected into the second cavity, thereby forming the feature from the polymer material and bonding the feature to the ceramic material. The polymer material is cured. The first component and the feature together form the housing component for an electronic device.

Abstract: Systems and methods for dynamically adjusting the fit of a wearable electronic device are disclosed. In many embodiments, a tensioner associated with a wearable electronic device can control one or more actuators that are mechanically coupled to either the housing or to a band attached to the wearable electronic device. In one example, in response to a signal to increase the tightness of the band, the tensioner can cause the actuator(s) to increase the tension within the band.

Abstract: A ceramic part and methods for making the ceramic part are disclosed. A green body or non-sintered part may be formed using a casting or molding process. The green body may not be sintered or may be partially sintered before machining one or more features into a surface of the green body. After machining, the component may be fully sintered to create a hardened ceramic component.

Abstract: An electronic device includes one or more light emitters for emitting light toward an object and one or more light detectors for collecting light exiting the object. A reflective coating, surface, or surface finish can be applied adjacent to the area to which light is emitted and/or through which light exits in order to increase the light collected by the light detector. The reflective coating can be oriented so as to reflect light back into the object.

Abstract: Systems and methods for dynamically adjusting the fit of a wearable electronic device are disclosed. In many embodiments, a tensioner associated with a wearable electronic device can control one or more actuators that are mechanically coupled to either the housing or to a band attached to the wearable electronic device. In one example, in response to a signal to increase the tightness of the band, the tensioner can cause the actuator(s) to increase the tension within the band.

Abstract: A method for co-finishing surfaces bonds a first structure formed of a first material and having a first surface in an aperture defined in a second structure formed of a second material and having a second surface such that there is an offset between the first surface and the second surface. The first surface and the second surface are co-lapped to reduce the offset. The first surface and second surface are co-polished to further reduce the offset. The first surface and second surfaces may then be flush. Edges of the first surface may be chamfered to mitigate damage during co-lapping and/or co-polishing. Fill material may be positioned in gaps between the first and second structures to mitigate damage during co-lapping and/or co-polishing.

Abstract: Interlocking first member and optical members and methods of their manufacture. A component formed from an interlocking first member and optical member, where the first member includes a recess formed within a surface and the optical member is disposed in the recess. The recess of the first member may include a recess geometry and the optical member may include a member geometry that may correspond to the recess geometry. Additionally, the interlocking component formed from the first member and optical member may be formed by a coupling process. The coupling process may include sintering the first member and the optical member, bonding the optical member to the first member or providing a compression-load or fit between the first member and the optical member.

Abstract: An electronic device includes one or more light emitters for emitting light toward an object and one or more light detectors for collecting light exiting the object. A reflective coating, surface, or surface finish can be applied adjacent to the area to which light is emitted and/or through which light exits in order to increase the light collected by the light detector. The reflective coating can be oriented so as to reflect light back into the object.

Abstract: A combination of a chamber wall and the flexible membrane defines a pump chamber in a diaphragm pump. The pump chamber includes one or more internal surfaces that are modified to include a pattern of a pattern of channel surface regions. The channel surface regions provide unobstructed pathways to a respective opening disposed on an internal surface of the chamber wall. For example, as discussed herein, presence of the channel surface regions ensures that the facing of the flexible membrane does not needlessly stick (as a result of residual suction) to an inside surface of the chamber wall during a portion of the pump stroke in which negative pressure is applied to a backing of the flexible membrane. In other words, the channel surface regions distribute relief pressure along the inside surface of the pump chamber wall.

Abstract: Systems and methods for dynamically adjusting the fit of a wearable electronic device are disclosed. In many embodiments, a tensioner associated with a wearable electronic device can control one or more actuators that are mechanically coupled to either the housing or to a band attached to the wearable electronic device. In one example, in response to a signal to increase the tightness of the band, the tensioner can cause the actuator(s) to increase the tension within the band.

Abstract: An electronic device includes one or more light emitters for emitting light toward an object and one or more light detectors for collecting light exiting the object. A reflective coating, surface, or surface finish can be applied adjacent to the area to which light is emitted and/or through which light exits in order to increase the light collected by the light detector. The reflective coating can be oriented so as to reflect light back into the object.

Abstract: A ceramic structure and methods for making the ceramic structure are disclosed. Multiple parts may be molded; the parts may be molded from the same or different ceramic materials. The parts may be formed in the same mold and may be adjacent to and/or attached to one another as a result of molding. The parts may be placed in a sintering furnace and sintered simultaneously. Simultaneously sintering the parts forms a unitary structure from the parts.

Abstract: An auxiliary electronic device attachable to a wearable electronic device. The auxiliary device includes a housing, electronic circuitry within the housing, and an attachment mechanism configured to attach the auxiliary electronic device to the wearable device while the device is being worn by a user. In some embodiments the electronic circuitry includes a power transmitting unit that can wirelessly transmit power to charge a rechargeable battery within the wearable electronic device. In some embodiments the attachment mechanism includes a pair of lugs that extend, from opposite ends of the housing, above the housing towards a center of the auxiliary device and are adapted to fit within corresponding recesses of the wearable electronic device.

Abstract: A combination of a chamber wall and the flexible membrane defines a pump chamber in a diaphragm pump. The pump chamber includes one or more internal surfaces that are modified to include a pattern of a pattern of channel surface regions. The channel surface regions provide unobstructed pathways to a respective opening disposed on an internal surface of the chamber wall. For example, as discussed herein, presence of the channel surface regions ensures that the facing of the flexible membrane does not needlessly stick (as a result of residual suction) to an inside surface of the chamber wall during a portion of the pump stroke in which negative pressure is applied to a backing of the flexible membrane. In other words, the channel surface regions distribute relief pressure along the inside surface of the pump chamber wall.

Abstract: An auxiliary electronic device attachable to a wearable electronic device. The auxiliary device includes a housing, electronic circuitry within the housing, and an attachment mechanism configured to attach the auxiliary electronic device to the wearable device while the device is being worn by a user. In some embodiments the electronic circuitry includes a power transmitting unit that can wirelessly transmit power to charge a rechargeable battery within the wearable electronic device. In some embodiments the attachment mechanism includes a pair of lugs that extend, from opposite ends of the housing, above the housing towards a center of the auxiliary device and are adapted to fit within corresponding recesses of the wearable electronic device.

Abstract: An electronic device has a concealed external electrical connector that may be activated by a pin of a mating connector. When the pin applies a force to an electrically conductive and flexible region of an exterior housing of an electronic device the electrically conductive region deflects inwards coupling to a contact within the electronic device. A bi-directional communications path is then established from the pin of the connector, through the conductive portion of the housing, to the contact and to circuitry within the housing of the electronic device.

Abstract: Systems and methods for dynamically adjusting the fit of a wearable electronic device are disclosed. In many embodiments, a tensioner associated with a wearable electronic device can control one or more actuators that are mechanically coupled to either the housing or to a band attached to the wearable electronic device. In one example, in response to a signal to increase the tightness of the band, the tensioner can cause the actuator(s) to increase the tension within the band.

Abstract: A method of manufacturing a co-molded housing component for an electronic device is disclosed. A component formed from a ceramic material is placed in a mold. The mold comprises a first section defining a first cavity configured to receive the first component, and a second section defining a second cavity that is in communication with the first cavity when the mold is closed. The second cavity is in the shape of a feature that is to be joined to the ceramic material. A polymer material is injected into the second cavity, thereby forming the feature from the polymer material and bonding the feature to the ceramic material. The polymer material is cured. The first component and the feature together form the housing component for an electronic device.