Abstract: A key structure of electronic device including a substrate, a light source disposed on the substrate, an elastic member disposed on the substrate, and a key cap disposed on the elastic member is provided. The elastic member has a tunnel for passing light generated by the light source and projecting toward the key cap. An inner diameter of the tunnel gradually expands from the light source toward the key cap.

Abstract: A method for switching audio reception in a video conference and a video conferencing system are provided. In a case of starting the video conference, relative positions of participants in a conference space and behavioral events of participants are obtained by identifying a video signal. Based on the behavioral event of each participant, whether each participant is in a non-speaking behavior is determined. When a participant is determined to be a non-speaker in the non-speaking behavior, an audio reception range of an audio reception device is adjusted to filter a voice of the non-speaker based on the relative position of the non-speaker in the conference space. When a participant is determined to be a speaker not in the non-speaking behavior, the audio reception range of the audio reception device is adjusted to receive a voice of the speaker based on the relative position of the speaker in the conference space.

Abstract: A method for recording a video conference and a video conferencing system are provided. The method includes: providing a user interface to a display device, in which the user interface includes a first area, a second area, and a timeline; in response to obtaining an image corresponding to each of multiple participants from a video signal through a person recognition algorithm, displaying the image of each participant in the first area; in response to converting an audio segment of one of the participants obtained from an audio signal into text content through a voice processing algorithm, associating the text content with the corresponding one of the participants, and based on an order of speaking, displaying the text content in the second area; and adjusting a time length of the timeline according to a recording time of the video conference.

Abstract: Disclosed are a headphone and an operating method thereof. The headphone includes a headband frame, a speaker module, a detector and a controller. The speaker module is disposed on the headband frame. The detector is disposed in the headband frame and detect stress changes on the headband frame to output a frequency response voltage value. The controller is electrically connected to the speaker module and the detector, and receives the frequency response voltage value. The controller determines whether the frequency response voltage value is the same as a target frequency response voltage value to read a target frequency response parameter corresponding to the target frequency response voltage value. The controller drives the speaker module according to the target frequency response parameter.

Abstract: A support structure including a first bracket, a second bracket, and at least one elastic member is provided. The first bracket includes multiple first alignment hole groups. The second bracket is detachably connected to the first bracket along a first axis. The second bracket includes multiple second alignment hole groups. The second bracket is adapted to slide relative to the first bracket along the first axis to change a length of the support structure along the first axis. The at least one elastic member is detachably connected to the first bracket and the second bracket. When the second bracket is connected to the first bracket, at least one of the first alignment hole groups is aligned with at least one of the second alignment hole groups to form at least one insertion space. A portion of the at least one elastic piece is located in the corresponding at least one insertion space and connected to the first bracket and the second bracket.

Abstract: A listening device includes a housing and a circuit board assembly. The housing includes at least one sound outlet. The circuit board assembly is disposed on the housing and includes a microphone, a proximity sensing chip, and a proximity sensing pattern. The microphone and the proximity sensing chip are close to each other and are disposed in a first area of the circuit board assembly. The proximity sensing pattern is disposed in a second area of the circuit board assembly. The second area is connected to the first area. The proximity sensing pattern surrounds and is staggered with the at least one sound outlet.

Abstract: A cushion for a wearable device includes an outer cover layer and an inner cushion. The outer cover layer includes a first base material, a heat conducting material and a first heat storage material. The heat conducting material and the first heat storage material are dispersed in the first base material. The enthalpy value of the outer cover layer is less than or equal to 5 J/g. The inner cushion includes a second base material and a second heat storage material. The second heat storage material is dispersed in the second base material. The enthalpy value of the inner cushion is greater than that of the outer cover layer. The difference between the enthalpy value of the inner cushion and the enthalpy value of the outer cover layer is greater than 45 J/g.

Abstract: An audio device and a control method thereof are provided. The audio device includes a first switch, a controller, and multiple audio switches. The first switch is turned on or cut off according to whether an audio jack is on a setting position. A first end of the first switch receives a bias voltage. The controller is coupled to the first switch, and generates control signals according to a turned-on or cut-off status of the first switch. The audio switches are respectively coupled between transmission paths of multiple audio signals. The audio switches are turned on or cut off according to the control signals or a voltage on a second end of the first switch.

Abstract: An audio device and a control method thereof are provided. The audio device includes a charger and at least one audio broadcaster. The charger is coupled to a transmission line and is configured to generate a charging voltage. The audio broadcaster is coupled to the charger through the transmission line. The charger transmits the charging voltage to the audio broadcaster through the transmission line, and transmits first data to the audio broadcaster through the transmission line. The audio broadcaster transmits second data to the charger through the transmission line.

Abstract: An electronic device, including a substrate, a package component, a first sensor chip, and a second sensor chip, is provided. The substrate has an inner space and a first through hole communicated with the inner space. The package component is disposed on the substrate and forms a front chamber and a back chamber together with the substrate. The package component has an opening. The front chamber is communicated with an outside air by the opening. The inner space constitutes at least part of the back chamber, and the back chamber is communicated with the front chamber by the first through hole. The first sensor chip is disposed on the substrate and covers the first through hole to separate an airflow in the front chamber and an airflow in the back chamber. The second sensor chip is disposed on the substrate and located in the back chamber.

Abstract: A supporting unit includes a first part, a second part, and an adjusting module. The first part includes a first connecting member and a supporting member. The supporting member is detachably connected to the first connecting member. The first connecting member is rotatably connected to the second part. The adjusting module is disposed in the first part and the second part. The adjusting module includes a rod body, a friction component, and an adjusting member. The rod body is connected to the second part. The friction component is movably connected to the rod body and is located between the first connecting member and the adjusting member. The first part generates a frictional force with the second part through the adjusting module. The adjusting member is movably connected to the rod body to adjust the frictional force.

Abstract: A speaker includes a frame, a magnetic circuit system setting section, a magnetic circuit system and a balance element. The frame has a first surface. The magnetic circuit system setting section is formed on the first surface of the frame, the magnetic circuit system setting section includes a first region and a second region, and the second region surrounds the first region. The magnetic circuit system is arranged in the magnetic circuit system setting section, and includes a voice coil. The voice coil has a first end facing the first surface and located in the second region. The balance element is connected to the first surface and the first end.

Abstract: An energy storage device and a method thereof for supplying power are provided. Control a power conversion circuit to lower an AC output voltage during a preset period to a preset voltage, control the power conversion circuit to change from outputting the preset voltage to outputting a surge voltage, so that the power conversion circuit enters a surge generation period, and determine whether to turn off the energy storage device according to whether an output terminal of the power conversion circuit generating a surge current during the surge generation period.

Abstract: A moving-coil speaker includes a frame, magnetic circuit system setting section, and magnetic circuit system. The frame has a first surface. The magnetic circuit system setting section is formed on the first surface and includes a first region and a second region surrounding the first region. The magnetic circuit system is disposed at the magnetic circuit system setting section and includes at least one voice coil which spaced from the first surface of the frame and having a first end and a second end opposite to the first end. The first end defines a virtual plane extending along a radial direction of the voice coil. The virtual plane and the first surface of the first region define a first distance. The virtual plane and the first surface of the second region define a second distance. The second distance is greater than the first distance, and the second distance and the first distance are parallel.

Abstract: An energy storage device and a method thereof are provided. The power transfer circuit transfers a DC voltage provided by a battery module into an AC output voltage to provide the AC output voltage to an output end of the power transfer circuit for providing power to a load. When the AC output voltage is at a default phase, the power transfer circuit is disabled in a default period, and whether the energy storage device may be shut down is determined according to a voltage difference of the AC output voltage sensed by a sensing circuit during the default period.

Abstract: A headset device and a control method thereof are provided. The headset device includes a head beam, a headset, a sensing circuit, a determination circuit, and a microcontroller. The headset is joined to an end portion of the head beam. The sensing circuit is disposed at the head beam. The sensing circuit provides a sensing value corresponding to a stretch change of the head beam according to the stretch change of the head beam. The determination circuit compares the sensing value with a first reference value to generate a first determination signal and compares the sensing value with a second reference value to generate a second determination signal. The microcontroller controls the headset to enter one of a turned-on state and a turned-off state according to the first determination signal and the second determination signal.

Abstract: A directional microelectromechanical systems (MEMS) microphone, including a first layer, a second layer, and a third layer stacked in sequence and multiple adhesive members formed between the first layer, the second layer, and the third layer, is provided. The adhesive members include an outer adhesive member disposed surrounding a periphery of the first layer, the second layer, and the third layer and an inner adhesive member disposed within a range surrounded by the outer adhesive member. The outer adhesive member and the inner adhesive member form at least two slits between the first layer, the second layer, and the third layer. An external sound is transmitted to a sound sensing element after passing through two receiving holes of the directional MEMS microphone respectively along two paths. One of the two paths passes through the at least two slits.

Abstract: An Internet of Things (IoT) system includes a plurality of terminal devices, a cloud device and a human machine interface (HMI) device. The cloud device is communicatively connected to the terminal devices. The human machine interface (HMI) device is communicatively connected to the terminal devices via a plurality of first communication channels, and communicatively connected to the cloud device via a first dedicated communication channel. The HMI device determines a subscription sequence according to priority information of a plurality of control commands, and schedules and dynamically subscribes to the first communication channels according to the subscription sequence. The HMI device respectively determines whether the terminal devices are adjacent to the HMI device, and transmits switch transmission mode request messages corresponding to the terminal devices adjacent to the HMI device to the cloud device via the first dedicated communication channel.

Abstract: A headphone includes a headgear and two earmuffs connected to opposite ends of the headgear, and each of the earmuffs includes an adjustment assembly. The adjustment assembly includes a base, two elastic members, two protrusions, and two sliding blocks. The base has two opposite accommodating parts and two guiding grooves. The elastic members are disposed in the accommodating parts, respectively, and the elastic members extend along a first axial direction. The protrusions are slidably connected to the guiding grooves, respectively, and protrude into the accommodating parts. The sliding blocks are disposed in the accommodating parts, respectively, and each of the sliding blocks is respectively connected between the corresponding protrusion and the corresponding elastic member.