Abstract: An example, facial interface structure for an extended-reality headset comprises a front portion configured to couple with a head-facing portion of an extended-reality headset, and a rear portion configured to couple with a portion of the user's face, wherein the front portion is configured to move relative to the rear portion in response to a force applied by a strap around a head of a user. The example facial interface includes two side support structures coupling the front portion to the rear portion, where each of the side support structures is configured to be positioned on a different respective side of the user's face. In addition, movement of the front portion relative to the rear portion causes, via the two side support structures, the rear portion to deform to thereby conform the rear portion to a profile of a user's head.

Abstract: The disclosure comprises an apparatus configured to engage a mixed reality head mounted device (HMD). The apparatus can include a chassis configured to engage a surface on an HMD and a facial ribbon coupled to the fabric trim frame. A coupling can be configured to engage the chassis frame and the facial ribbon; the facial ribbon comprises at least one pivoting hinge-type structure. The apparatus can comprise an occlusion wrap. The apparatus can further comprise a face pad wherein the face pad is configured to mate with a contour profile of the facial ribbon determined by the shape of the facial ribbon.

Abstract: An example, facial interface structure for an extended-reality headset comprises a front portion configured to couple with a head-facing portion of an extended-reality headset, and a rear portion configured to couple with a portion of the user's face, wherein the front portion is configured to move relative to the rear portion in response to a force applied by a strap around a head of a user. The example facial interface includes two side support structures coupling the front portion to the rear portion, where each of the side support structures is configured to be positioned on a different respective side of the user's face. In addition, movement of the front portion relative to the rear portion causes, via the two side support structures, the rear portion to deform to thereby conform the rear portion to a profile of a user's head.

Abstract: A headset device may include a facial interface having an inflatable bladder. The inflatable bladder may be configured to conform to facial contours of a face of a user when the headset device is worn. In examples, the inflatable bladder may include one or more bladder sections that may be filled with a fluid. In some examples, based in part on receiving an input, a pressure within one or more bladder sections may be adjusted from a first pressure to a second pressure in part by adjusting a volume of fluid within the one or more bladder sections of the inflatable bladder.

Abstract: A head-wearable device for presenting an extended reality that includes a lens system, and a facial interface. The facial interface includes a portion configured to be coupled with the lens system via an adjustment mechanism assembly and a facial-interface portion configured to be in contact with a wearer's face. The adjustment mechanism assembly is configured to move the facial-interface portion relative to the lens system which changes a depth between a lens of the lens system and the wearer's face (the eye relief) between: (i) a first depth, configured to accommodate a first facial profile associated with a first wearer and (ii) a second depth, configured to accommodate a second facial profile associated with a second wearer.

Abstract: A headset includes a head-mounted display, a band connected to the head-mounted display, an inflatable pad positioned on at least one of the head-mounted display or the band, the inflatable pad including at least one chamber, and a pump mechanism configured to inflate the at least one chamber. The inflatable pad may be configured to adjust the fit of the headset for a wearer.

Abstract: A headset device may include a facial interface having an inflatable bladder. The inflatable bladder may be configured to conform to facial contours of a face of a user when the headset device is worn. In examples, the inflatable bladder may include one or more bladder sections that may be filled with a fluid. In some examples, based in part on receiving an input, a pressure within one or more bladder sections may be adjusted from a first pressure to a second pressure in part by adjusting a volume of fluid within the one or more bladder sections of the inflatable bladder.

Abstract: Systems, devices, and methods for eye strain reduction in head mountable displays are disclosed. The system may include an adjustable facial interface bracket and an extender bracket that can be coupled to the head mountable display device. An actuating mechanism may be incorporated to define the spatial distance between the facial interface bracket and the extender bracket. This may allow users to customize the distance between their eyes and the display panel, reducing eye strain and improving the overall comfort of the head mountable display. The system may offer a flexible and user-friendly solution to enhance the user experience and alleviate eye strain in head mountable displays.

Abstract: A personal care appliance 10 comprises an actuator 14, a current sensor 28 for monitoring a driving current, and a controller 24. The actuator 14, operable according to a non-linear response characteristic 58 of amplitude versus frequency, includes a movable shaft 18 configured for resonant movement 38 in response to a drive signal 25, further for being coupled with a workpiece 20. The controller 24 (i) detects at least one of a plurality of different characteristic load states (100,102,104,106,108,110) in response to a perturbation in the monitored driving current 29 and (ii) actively delivers the drive signal 25 to the actuator 14 selected from at least two different drive signals (66,70) as a function of a detected characteristic load state.

Abstract: A drivetrain assembly (100, 200) for a personal care device (10), the drivetrain assembly including a resonator (110) connected to a transmission component (24) configured to transmit oscillations to the removable attachment; and a drive coil (120) configured to oscillate the resonator in a first direction; where the drive coil is configured to generate an installation or removal signal in response to installation or removal of the removable attachment, the installation or removal of the removable attachment generating movement of the resonator in a second direction; and where the drivetrain assembly is configured to communicate the generated signal to a controller.

Abstract: A control method for a series hybrid power system or synergic electric power supply and a control device thereof are disclosed. The control device includes: a generator reference current value generating module and a generator current control module. The generator reference current value generating module is configured to generate a reference current value of a generator according to an actual current value of an energy storage device, a reference current value of the energy storage device, an actual voltage value of a DC bus, and a reference voltage value of the DC bus. The generator current control module is configured to generate a control signal of a rectifier according to the reference current value of the generator, the actual value of any two-phase current of the generator, and an actual angular velocity of the generator, thereby controlling the series hybrid power system or the synergic electric power supply.

Abstract: A control method for a series hybrid power system or synergic electric power supply and a control device thereof are disclosed. The control device includes: a generator reference current value generating module and a generator current control module. The generator reference current value generating module is configured to generate a reference current value of a generator according to an actual current value of an energy storage device, a reference current value of the energy storage device, an actual voltage value of a DC bus, and a reference voltage value of the DC bus. The generator current control module is configured to generate a control signal of a rectifier according to the reference current value of the generator, the actual value of any two-phase current of the generator, and an actual angular velocity of the generator, thereby controlling the series hybrid power system or the synergic electric power supply.

Abstract: A whitening smart pen apparatus (10) for automatically dispensing a teeth whitening substance onto one or more teeth of a user comprises a fluid reservoir (16), a nozzle (18) having an output port (26), a fluid dispenser (20), a sensor (22) and a controller (24). The fluid dispenser dispenses the teeth whitening substance from the fluid reservoir to the nozzle and is output via the output port. The sensor, positioned in an advance dispensing direction of the nozzle, senses a target surface that comprises either (i) a tooth surface (12) or (ii) other surface (14). The controller (24) is configured for (i) controlling a gating of the fluid dispenser (20) to dispense the teeth whitening substance from the fluid reservoir (16) in response to the sensor (22) detecting the tooth surface (12), and (ii) stopping or disabling the gating of the fluid dispenser to stop or disable a dispensing of the teeth whitening substance from the fluid reservoir in response to the sensor (22) detecting the other surface (14).

Abstract: A drivetrain assembly (100, 200) for a personal care device (10), the drivetrain assembly including a resonator (110) connected to a transmission component (24) configured to transmit oscillations to the removable attachment; and a drive coil (120) configured to oscillate the resonator in a first direction; where the drive coil is configured to generate an installation or removal signal in response to installation or removal of the removable attachment, the installation or removal of the removable attachment generating movement of the resonator in a second direction; and where the drivetrain assembly is configured to communicate the generated signal to a controller.

Abstract: An oral care appliance (100), such as an electric toothbrush, utilizing non-linear resonant systems is described herein. In one exemplary embodiment, the oral care appliance includes a longitudinal shaft (102), a brush head (130), and a handle (190). The handle includes a motor (140) that generates a first amplitude (404) for the brush head based on the brush head being outside of the user's mouth, when no mass is applied to the brush head. In response to the brush head being inside of the user's mouth, when mass is applied, such as by pressing the brush head against the teeth, the motor causes a second amplitude (410) to be generated for the brush head that is larger than the first amplitude.

Abstract: A whitening smart pen apparatus (10) for automatically dispensing a teeth whitening substance onto one or more teeth of a user comprises a fluid reservoir (16), a nozzle (18) having an output port (26), a fluid dispenser (20), a sensor (22) and a controller (24). The fluid dispenser dispenses the teeth whitening substance from the fluid reservoir to the nozzle and is output via the output port. The sensor, positioned in an advance dispensing direction of the nozzle, senses a target surface that comprises either (i) a tooth surface (12) or (ii) other surface (14). The controller (24) is configured for (i) controlling a gating of the fluid dispenser (20) to dispense the teeth whitening substance from the fluid reservoir (16) in response to the sensor (22) detecting the tooth surface (12), and (ii) stopping or disabling the gating of the fluid dispenser to stop or disable a dispensing of the teeth whitening substance from the fluid reservoir in response to the sensor (22) detecting the other surface (14).

Abstract: An oral care appliance (100), such as an electric toothbrush, utilizing non-linear resonant systems is described herein. In one exemplary embodiment, the oral care appliance includes a longitudinal shaft (102), a brush head (130), and a handle (190). The handle includes a motor (140) that generates a first amplitude (404) for the brush head based on the brush head being outside of the user's mouth, when no mass is applied to the brush head. In response to the brush head being inside of the user's mouth, when mass is applied, such as by pressing the brush head against the teeth, the motor causes a second amplitude (410) to be generated for the brush head that is larger than the first amplitude.

Abstract: A personal care appliance 10 comprises an actuator 14, a current sensor 28 for monitoring a driving current, and a controller 24. The actuator 14, operable according to a non-linear response characteristic 58 of amplitude versus frequency, includes a movable shaft 18 configured for resonant movement 38 in response to a drive signal 25, further for being coupled with a workpiece 20. The controller 24 (i) detects at least one of a plurality of different characteristic load states (100,102,104,106,108,110) in response to a perturbation in the monitored driving current 29 and (ii) actively delivers the drive signal 25 to the actuator 14 selected from at least two different drive signals (66,70) as a function of a detected characteristic load state.

Abstract: A method and a system of synchronizing an unread message of instant communication are disclosed. The method includes: obtaining information of an unread message in each dialogue associated with an instant messaging account from a server when the account is logged in via a current terminal; and displaying the information of the unread message in the current terminal, wherein the unread message is a message with time information that is larger than a first time stamp in each dialogue, the first time stamp being time information of a most recently read message in each dialogue submitted by the instant messaging account, and the first time stamp corresponding to each dialogue of the instant messaging account being stored in the server.