Abstract: Systems, methods, and computer readable media to detect and track a user's eye gaze and head movement are described. In general, techniques are disclosed for identifying a user's pupil location and using this information, in conjunction with a three dimensional (3D) model of the user's head, perform gaze tracking operations. More particularly, techniques disclosed herein utilize pupil gradient information to refine an initial pupil location estimate. Once identified, the pupil's location may be combined with 3D head pose information to generate an accurate and robust gaze detection mechanism.

Abstract: Systems, methods, and computer readable media to detect and track a user's eye gaze and head movement are described. In general, techniques are disclosed for receiving one or more stereo images of a set of pupils, wherein each of the set of pupils is part of an eye of a head, calculating a location of each of the set of pupils from the stereo images, determining a head pose based on the one or more stereo images, identifying a location of the set of pupils in the head based on the determined head pose, and identifying a gaze using the locations of each of the set of pupils.

Abstract: A user can capture an image of an object, using a computing device, to obtain information about that object. If a specular highlight (or other saturated region) is detected, the device can attempt to determine a location of a light source associated with the highlight. The device can then provide instructions as to a direction to move in order to reduce the presence of the specular highlight in subsequent images. Multiple images of the object can be captured and analyzed to generate a three-dimensional reconstruction of the environment, whereby a position of the light source can be determined. In other embodiments, movement of the specular reflections in response to movement of the device is used to determine a direction of the light source. In other embodiments, an image of the user is captured to determine the position of the light source based on shadows or reflections on the user.

Abstract: A power output management apparatus of a battery and a management method thereof are provided. The management method includes: enabling a power output mode and discharging a battery to a load via a discharge circuit in the power output mode; calculating the output power of the discharge circuit during the discharge; comparing the output power and a target power to generate a comparison result; and setting the output power being adjusted step by step by a unit compensation amount via the discharge circuit according to the comparison result.

Abstract: A mobile device for projecting images on a surface and for maintaining a position of the image on the surface. The device including an image rendering module to scan the surface and to modify the image based on data obtained about a three dimensional nature of the surface. The device further including an optical image stabilization to adjust an alignment of the projector based on orientation data of the device, an electronic image stabilization module to shift the image within a projection area based on the orientation data and an image-tracking module to shift the image within the projection area based on changes in a relative positions of the image and a target.

Abstract: A wheel hub motor includes a motor housing and a motor received in the motor housing. The motor housing includes a first holder, a second holder coupled to the first holder, and a protective ring detachably coupled to the second holder. The motor is received in the first holder and the second holder. An inner diameter of the second holder is equal to an outer diameter of the motor. An outer diameter of the protective ring is greater than the outer diameter of the motor. An inner diameter of the protective ring is smaller than the outer diameter of the motor.

Abstract: A torque sensor for electrically assisting a vehicle with pedals includes a housing, a first gear, an actuator, and a control circuit. The housing defines a receiving chamber and is configured to be coupled to a drive member. The first gear is rotatably mounted in the receiving chamber. The actuator is received in the receiving chamber and is driven by the first gear. The control circuit including a resistor is received in the receiving chamber and the actuator slides along the resistor as a rider applies force to the pedals, thus for adjusting a resistance value of the control circuit, to allow the control circuit to output a signal which governs the assisting power. The disclosure also includes an electric bicycle using the torque sensor.

Abstract: The power assisting device includes driver with a rotary axis, a main gear, a first transmission rod, a first bevel gear, a second bevel gear, a first rotating rod, a third bevel gear, and a first driving wheel. The main gear is driven by the driver to rotate about the rotary axis. The first transmission rod extends along a direction perpendicular to the rotary axis. The first bevel gear and the second bevel gear are separately sleeved on the transmission rod. The first bevel gear is engaged with the main gear. The first rotating rod extends along a direction parallel to the rotary axis. The third bevel gear is sleeved on the first rotating rod and is engaged with the second bevel gear. The first driving wheel is coupled to the first rotating rod for assisting a wheel of a vehicle to move forward.

Abstract: A method and a portable electronic apparatus for adaptively adjusting a playback effect of speakers are provided. The portable electronic apparatus includes a speaker enclosure volume adjusting device and a processor coupled to the speakers and the speaker enclosure volume adjusting device. In the method, the processor detects a usage demand for the portable electronic apparatus and accordingly determines an audio mode. Based on the determined audio mode, the processor selects and activates multiple speakers, and adjusts an enclosure volume of at least one of the activated speakers, so as to change an audio frequency range of the at least one speaker and an overall audio frequency range covered by the activated speakers. Finally, the processor plays an audio through the activated speakers.

Abstract: A programmable band-pass filter circuit, which is included by an analog front-end circuit and used for capacitance detection, includes an operational amplifier, an input resistor, a feedback resistor, and a feedback capacitor. The operational amplifier includes a first input coupled to a reference level, a second input, and an output. The input resistor has a first end coupled to a sensed capacitor and a second end coupled to the second input of the operational amplifier. The feedback resistor and feedback capacitor are connected between the second input of the operational amplifier and the output of the operational amplifier, respectively.

Abstract: A heat dissipation structure includes a first heat-conducting sheet, a second heat-conducting sheet and a meshed heat-conducting layer. The meshed heat-conducting layer is adhered between the first heat-conducting sheet and the second heat-conducting sheet. The meshed heat-conducting layer includes a plurality of first heat-conducting mediums and a plurality of second heat-conducting mediums, the first heat-conducting mediums and the second heat-conducting mediums are alternately arranged, and the thermal conductivity of each of the first heat-conducting mediums is less than the thermal conductivity of each of the second heat-conducting mediums.

Abstract: A torque sensor for electrically assisting a vehicle with pedals includes a housing, a rotating member, an actuator, and an resistor. The housing defines a receiving chamber and is configured to be coupled to the driving member. The rotating member is rotatably mounted in the receiving chamber and configured to rotate under an external force. The resistor is received in the receiving chamber and the actuator slides along the electrical resistance and compresses a spring as a rider applies force to the pedals. The variable resistor is coupled to a controlling module which governs the assisting power. The disclosure also includes an electric bicycle using the torque sensor.

Abstract: A method and a system for adjusting a volume of a conference call are provided. The system includes at least one sub-device and a host. The host respectively connects the at least one sub-device and detects a number of the connected sub-devices. The host adjusts a volume of an original voice signal received from an external device according to the number of the connected sub-devices to generate an adjusted voice signal adapted to each sub-device and provides the same to each sub-device to play. The host also adjusts volumes of the original voice signals received by the host and each sub-device, integrates the adjusted original voice signals into an integrated voice signal adapted to the external device, and provides the same to the external device to play.

Abstract: A wheel hub motor includes a motor housing and a motor received in the motor housing. The motor housing includes a first holder, a second holder coupled to the first holder, and a protective ring detachably coupled to the second holder. The motor is received in the first holder and the second holder. An inner diameter of the second holder is equal to an outer diameter of the motor. An outer diameter of the protective ring is greater than the outer diameter of the motor. An inner diameter of the protective ring is smaller than the outer diameter of the motor.

Abstract: A binder ring metal (10) includes binder rings (12-16) portions of which are installed on frame assemblies (18a, 18b) installed in a side-by-side relationship within a shield (20). A lever (22) is operatively connected with a travel bar (24) for movement of the lever to effect opening or closing of the rings. A gear mechanism (G) includes a plurality of gear teeth (30) are formed on lever, and a plurality of gear teeth (32) are formed on an adjacent surface of the travel bar. These teeth mesh with each other so movement of the lever by a user effects movement of the travel bar to respectively unblock or block movement of the frame assemblies, so the binder ring can open or close.

Abstract: The power assisting device includes driver with a rotary axis, a main gear, a first transmission rod, a first bevel gear, a second bevel gear, a first rotating rod, a third bevel gear, and a first driving wheel. The main gear is driven by the driver to rotate about the rotary axis. The first transmission rod extends along a direction perpendicular to the rotary axis. The first bevel gear and the second bevel gear are separately sleeved on the transmission rod. The first bevel gear is engaged with the main gear. The first rotating rod extends along a direction parallel to the rotary axis. The third bevel gear is sleeved on the first rotating rod and is engaged with the second bevel gear. The first driving wheel is coupled to the first rotating rod for assisting a wheel of a vehicle to move forward.

Abstract: A torque sensor for electrically assisting a vehicle with pedals includes a housing, a first gear, an actuator, and a control circuit. The housing defines a receiving chamber and is configured to be coupled to a drive member. The first gear is rotatably mounted in the receiving chamber. The actuator is received in the receiving chamber and is driven by the first gear. The control circuit including a resistor is received in the receiving chamber and the actuator slides along the resistor as a rider applies force to the pedals, thus for adjusting a resistance value of the control circuit, to allow the control circuit to output a signal which governs the assisting power. The disclosure also includes an electric bicycle using the torque sensor.

Abstract: A torque sensor for electrically assisting a vehicle with pedals includes a housing, a rotating member, an actuator, and an resistor. The housing defines a receiving chamber and is configured to be coupled to the driving member. The rotating member is rotatably mounted in the receiving chamber and configured to rotate under an external force. The resistor is received in the receiving chamber and the actuator slides along the electrical resistance and compresses a spring as a rider applies force to the pedals. The variable resistor is coupled to a controlling module which governs the assisting power. The disclosure also includes an electric bicycle using the torque sensor.

Abstract: Various embodiments utilize two-dimensional (“2D”) and three-dimensional (“3D”) object features for purposes such as object recognition and/or image matching. For example, a user can capture an image (e.g., still images or video) of an object and can receive information about items that are determined to match the object. For example, the image can be analyzed to detect visual features (e.g., corners, edges, etc.) of the object and the detected visual features can be combined to generate a combined visual feature vector which can be used for object recognition, image matching, or other such purposes. Other approaches utilize the image to generate a 3D model of the object represented in the image, which can be used to determine at least one object or types of objects that match the object represented in the image.

Abstract: An electronic device includes a case, a speaker, a supporting stand, and a waterproof breathable membrane. The case includes a first inner space and a through hole connected to the first inner space. The speaker is disposed in the first inner space, and produces sound waves outwards from the through hole. The supporting stand connects the case to cover the through hole. The supporting stand includes a sound hole and a second inner space connected to the sound hole and the through hole. The waterproof breathable membrane covers one of the sound hole and the through hole.