Abstract: A loudspeaker apparatus includes a circuit housing configured to accommodate a circuit component or a battery; an ear hook; a housing of an earphone core configured to accommodate the earphone core; and a housing protector at least partially covering a periphery of the circuit housing and the ear hook. A first end of the ear hook is connected to the circuit housing. The earphone core is driven by the circuit component or the battery to vibrate to generate sound. The housing of the earphone core is connected to a second end of the ear hook away from the circuit housing through a hinge component. The hinge component is capable of rotating to change a position of the housing of the earphone core relative to the ear hook.

Abstract: An implantable medical device (IMD) that includes a transceiver configured to broadcast an advertising data packet that includes a unique identifier, and to receive a scan request data packet from an external device. A memory stores program instructions, and stores an approved device list, and one or more processors are configured to execute the program instructions to identify a device identifier (ID) from the scan request data packet received, apply an advertising filter to determine if the scan request data packet is from an authorized external device based on the device ID and the approved device list, based on the determination by the advertising filter, deny transmission of a scan response data packet from the transceiver when the advertising filter determines that the scan request data packet is from an unauthorized external device, and establish a communication session with an authorized external device independent of the scan request data packet.

Abstract: An electrical connector housing comprises a body, a locking portion, and a securing portion. The body defines a receiving cavity adapted to receive a terminal, and an insertion hole adapted to receive a conductive connecting element, such that the conductive connecting element electrically connects the terminal. The locking portion is movably connected to the body and movable from a first position to a second position after the conductive connecting element is inserted. In the second position, a wedge-shaped structure arranged on at least one of the body or the locking portion is adapted to increase a retention force between the terminal and the conductive connecting element. The securing portion selectively secures the locking portion in the second position.

Abstract: The present disclosure provides a sensor and a knee joint brace. In the sensor and a knee joint brace, the sensor includes: a sensor bottom shell, a synchronous rotating component, an angle sensing instrument, and a circuit component arranged in sequence from bottom to top. One end of the synchronous rotating component is rotatably connected with the sensor bottom shell, and is used for connecting a support arm of the knee joint brace, and the other end of the synchronous rotating component is connected to the angle sensing instrument. The angle sensing instrument is electrically connected to the circuit component. The synchronous rotating component is arranged, and a movement state of a support arm of the knee joint brace is synchronized. The angle sensing instrument is arranged and is connected to the synchronous rotating component.

Abstract: A magnetic buckle structure for a knee-joint brace and a knee-joint brace having the same. The magnetic buckle structure for the knee-joint brace includes a joint brace body, a lower magnetic buckle arranged on the joint brace body, and an upper magnetic buckle arranged on the lower magnetic buckle and magnetically connected to the lower magnetic buckle. Through the arrangement of the upper magnetic buckle and the lower magnetic buckle, a bandage of the knee-joint brace can be magnetically fixed or replaced, whereby being convenient for a user to wear and remove the knee-joint brace.

Abstract: A method is provided for establishing a communication session with an implantable medical device (“IMD”). The method includes configuring an IMD and an external device to communicate with one another through a protocol that utilizes a dedicated advertisement channel. The advertisement period and the scan period of the protocol are independent of one another such that the advertisement and scan periods at least partially overlap intermittently after a number of cycles. When the external device detects one of the advertisement notices, the method includes establishing a communications link between the external device and the IMD.

Abstract: A loudspeaker device includes a speaker component, a first microphone element, and a second microphone element. The speaker component includes an earphone core and a core housing. The first microphone element is disposed on a first branch circuit board of a circuit board. The second microphone element is disposed on a second branch circuit board of the circuit board. The circuit board is configured to electrically connect to an audio signal wire, a first auxiliary signal wire, and a second auxiliary signal wire of an external control circuit. The audio signal wire, the first auxiliary signal wire, and the second auxiliary signal wire are electrically and respectively connected to the earphone core, the first microphone element, and the second microphone element through the circuit board. A board surface of the second branch circuit board is tilt with respect to a board surface of the first branch circuit board.

Abstract: Discloses is a push-pull RF power amplifier circuit, comprising a first differential amplifier transistor, a second differential amplifier transistor, a first balun and a capacitor network. In this application, the primary coil of first balun is improved into a structure in which the first and second coil segment are connected with each other, and the capacitor network is connected at the joint of the first and second coil segment. The capacitor network and first balun jointly participate in impedance matching of the push-pull RF power amplifier circuit, so that the push-pull power amplifier system can support larger bandwidth while achieving impedance matching. There is no need to separately connect capacitors between the output end of the first differential amplifier transistor and the first input end of the first balun, or between the output end of the second differential amplifier transistor and the second input end of the first balun.

Abstract: Disclosed is an earphone including one or more core modules, one or more ear hook components connected to the one or more core modules, and a rear hook component connected to the one or more ear hook components. Each of the one or more ear hook components is configured to hang on an ear of a user in a wearing state, the rear hook component is configured to bypass a rear side of a head of the user in the wearing state. The rear hook component includes an elastic metal tube and a wire threaded within the elastic metal tube. Compared with the related technology in which the rear hook component is an elastic covering wrapping an elastic metal wire and a wire, in the present disclosure, the elastic metal wire is changed into an elastic metal tube and the wire is threaded within the elastic metal tube.

Abstract: An open earphone comprising a sound production component and an ear hook is provided. The ear hook includes a first portion and a second portion. The first portion is hung between an auricle and the head of a user, the second portion extends toward a front outer side of the auricle and connects to the sound production component, and the sound production component is located close to an ear canal but does not block the ear canal opening. The open earphone and the auricle have a first projection and an eighth projection on a sagittal plane, respectively, a centroid of a portion of the first projection corresponding to the sound production component have a first distance to a highest point of the eighth projection in a vertical axis direction, and a ratio of the first distance to a height of the eighth projection is within a range of 0.35-0.

Abstract: A wiping object cleaning device for a floor mopping machine belongs to the technical field of cleaning appliances. The wiping object cleaning device includes a bucket body, and further includes a water conveying mechanism for conveying water to a wiping object of a floor mopping machine. The water conveying mechanism conveys water during cleaning, and stops conveying water during water removal. The wiping object cleaning device is able to clean a mop of a floor mopping machine efficiently, wide in application range, suitable for different wiping objects of floor mopping machines, and low in production cost.

Abstract: The present disclosure relates to an apparatus. The apparatus may comprise two ear-hook assemblies configured to be hung outside of two ears of a user respectively, and a rear-hook assembly in a curved shape configured to connect the two ear-hook assemblies and wrap around a rear side of the head of the user. The rear-hook assembly may include an elastic metal filament, wires, and an elastic covering body covering the elastic metal filament and the wires.

Abstract: A charging control method and an electronic device implementing a charging control method includes: sending a first data packet, in which, the first data packet includes to-be-charged identification information and first characteristic information of the first electronic device; receiving a second data packet corresponding to the first data packet sent by the second electronic device, in which, the second data packet includes power supply identification information and charging strategy information; determining and performing a charging strategy according to the second data packet, in which, the charging strategy includes at least one of: the first electronic device receiving power supply from the second electronic device, and the first electronic device supplying power to the second electronic device.

Abstract: A bone conductive sound generating device is provided and includes a sound generating mechanism and a fixing mechanism. The fixing mechanism is configured to act on the sound generating mechanism, such that the sound generating mechanism adheres to and fit with a back of an auricle of a user at least when the sound generating mechanism is in use. Accordingly, the present application may improve the sound quality of the bone conductive sound generating device, improving listening experience for the user.

Abstract: A phase loss detection device, a compressor including the same, and a phase loss detection method are disclosed. The phase loss detection device may include a signal converting circuit and a processor. The signal converting circuit is configured to convert voltage signals corresponding to respective phases of multiphase alternating current (AC) power monitored from a motor. The processor is configured to receive the converted voltage signals from the signal converting circuit, and configured to calculate, based on the converted voltage signals, one or more phase angles between the respective voltage signals. The processor is configured to determine that phase loss occurs if any one or more of the calculated phase angles deviate from a nominal value of a corresponding phase angle of the multiphase AC power by a value higher than a predetermined threshold. The phase loss detection can be performed in a convenient, effective and reliable way.

Abstract: Embodiments of the present disclosure provide an earphone including: a sound generation component, including a transducer and a housing accommodating the transducer, the housing being provided with a sound outlet hole and a pressure relief hole, the sound outlet hole being provided on an inner side of the housing facing an auricle, and the pressure relief hole being provided on an other side of the housing; an ear hook configured to place the sound generation component near an ear canal without blocking the ear canal in a wearing state; and a microphone assembly at least including a first microphone and a second microphone provided in the sound generation component or the ear hook, the sound generation component or the ear hook being provided with a first sound receiving hole and a second sound receiving hole corresponding to the first microphone and the second microphone, respectively.

Abstract: Computer implemented methods and systems are provided that comprise, under control of one or more processors of a medical device, where the one or more processors are configured with specific executable instructions. The methods and systems include sensing circuitry configured to define a sensing channel to collect biological signals, memory configured to store program instructions, a processor configured to implement the program instructions to at least one of analyze the biological signals, manage storage of the biological signals or deliver a therapy, and communication circuitry configured to wirelessly communicate with at least one other implantable or external device, the communication circuitry configured to transition between a sleep state, a partial awake state and a fully awake state.

Abstract: The present disclosure relates to acoustic technology, in particular to an earphone including a sound generation portion. The sound generation portion includes a transducer and a housing for accommodating the transducer. The earphone further includes an earhook. The earhook includes a first portion and a second portion. The first portion may be hung between an auricle and the head of a user, and the second portion may be connected to the first portion, extends toward an anterolateral side of the auricle, and may be connected to the sound generation portion. The sound generation portion may be fixed near an ear canal without blocking an opening of the ear canal. In at least one frequency range, when an input current of the transducer does not exceed 35.3 mA, a maximum sound pressure that the sound generation portion is able to provide to the ear canal may not be smaller than 75 dB.