Abstract: The loudspeaker module includes a loudspeaker unit including a front cover and a casing engaged together, a vibration system, and a magnetic circuit system received in a space enclosed by the front cover and casing. The loudspeaker module further includes an independent housing enclosing a sealed cavity. The independent housing is provided with an opening communicating the cavity with the exterior. A sidewall of the casing is provided with a rear sound aperture radiating an acoustic wave to a side. The side of the loudspeaker unit provided with the rear sound aperture is sealingly engaged with the independent housing at the opening. A structure of the opening matches with the loudspeaker unit. The rear sound aperture communicates with the cavity. After the loudspeaker unit is engaged with the independent housing, the cavity forms a rear acoustic cavity of the loudspeaker module.

Abstract: Disclosed examples include a segmented DAC circuit, including an R-2R resistor DAC to convert a first subword to a first analog output signal, an interpolation DAC to offset the first analog output signal based on an N-bit digital interpolation code signal to provide the analog output signal, and a Sigma Delta modulator to modulate a modulator code to provide the N-bit digital interpolation code signal that represents a value of second and third subwords.

Abstract: The present invention relates to an elastic corrugated pipe single-acting cylinder-driven mechanical gripper with a series-connection loose-leaf hinge framework. The mechanical gripper consists of a palm and two flexible fingers or a palm and three flexible fingers. The flexible fingers are identical in structure, and each one of the flexible fingers consists of an elastic corrugated pipe single-acting cylinder and a series-connection loose-leaf hinge. Each one of the series-connection loose-leaf hinges has a hinge mandrel equipped with a torsion spring, and the characteristic parameters and pre-tightening angle of the torsion spring are optimally designed according to the features of a grasped object. The mechanical gripper is driven by the elastic corrugated pipe single-acting cylinder to generate a grasping force. The mechanical gripper applies to the grasping of fragile brittle objects, or grasping of objects with varying shapes and dimensions.

Abstract: A rubber frame, a backlight module and a display device are provided by the present disclosure, the rubber frame is applied to the backlight module and includes a soft rubber body. The soft rubber body includes a first section, a second section, a third section and a fourth section. At least one section is provided with a first fixing portion configured to fix a display panel.

Abstract: Disclosed is an elastic corrugated pipe single-acting cylinder-driven mechanical gripper with a series-connection flexible hinge framework. The mechanical gripper consists of a palm and two flexible fingers or a palm and three flexible fingers. Each of the flexible fingers is identical in structure, and essentially consists of an elastic corrugated pipe single-acting cylinder (8) and a series-connection flexible hinge (4); configuration of the series-connection flexible hinge (4) is designed according to features of grasping objects; the mechanical gripper generates a grasping force by the elastic corrugated pipe single-acting cylinder (8).

Abstract: Disclosed is a loudspeaker module, which comprises a loudspeaker unit and a module housing for accommodating the loudspeaker unit. The loudspeaker unit comprises a magnetic circuit assembly and a vibration assembly. The module housing comprises a polycarbonate plastic material layer and an elastomeric material layer having a compression amount. The polycarbonate plastic material layer forms an inner layer of the module housing. The elastomeric material layer is at least partially bonded on the outside of the polycarbonate plastic material layer to form the outer layer of the module housing. The polycarbonate plastic material layer and the elastomeric material layer are formed by double-shot injection molding.

Abstract: An electronic device and a power adapter are provided. The power adapter comprises a power circuit, a main control circuit, a potential adjustment circuit, a current detection circuit, a voltage detection circuit and an output switch circuit. When a conventional charging or a quick charging is performed on the battery in the electronic device, the main control circuit determines whether the output current of the power adapter is greater than a current threshold according to the current detecting signal and determines whether the output voltage of the power adapter is greater than a voltage threshold according to the voltage detecting signal; if the output current of the power adapter is greater than the current threshold and/or the output voltage of the power adapter is greater than the voltage threshold, the main control circuit controls the output switch circuit to turn off the direct current output of the power adapter.

Abstract: In a charging method of controlling output voltages, a controller acquires first mapping relation that is a one-to-one mapping relation between at least two adjustment strategies and at least two duty cycles. Each of the adjustment strategies comprises indication information of an adjustment direction of an output voltage of a power converter. The controller determines a first adjustment strategy. The controller generates a pulse width modulation (PWM) signal based on the first adjustment strategy and the first mapping relation. The duty cycle of the PWM signal is one of the at least two duty cycles indicated by the first mapping relation and corresponds to the first adjustment strategy. The controller transmits the PWM signal such that the adjustment direction of the output voltage of the power converter corresponds to the first adjustment strategy.

Abstract: The present disclosure provides a quick charging method and a quick charging system. A second controller sends a quick-charging request to a first controller. The first controller feeds back a quick-charging permission command. The second controller sends a notification request for obtaining a voltage value of a cell. The first controller obtains the voltage value by a cell connector, and sends the voltage value to the second controller. The second controller finds a current regulation instruction matching a threshold section that the voltage value falls within from a threshold section table, and sends a current regulation instruction to a regulation circuit. The regulation circuit adjusts a current, and outputs a power supply signal of which the current is regulated.

Abstract: The present disclosure relates to the technical field of charging. A terminal and a battery charging control device and method are provided. The battery charging control device including a battery connector, a main control circuit and a quick charging switch circuit is adopted. During the regular charging or the quick charging, the main control circuit performs a data communication with the external power adapter via the communication interface, and obtains a charging voltage and a charging current for the battery; if the charging voltage is greater than a voltage threshold and/or the charging current is greater than a current threshold, the main control circuit sends a charging switch-off instruction, such that the controller controls the communication interface to switch off; if the charging voltage is less than or equal to the voltage threshold and the charging current is less than or equal to the current threshold, the main control circuit continues to obtain the charging voltage and the charging current.

Abstract: It is disclosed an etching method, comprising: applying a photoresist layer on a layer to be patterned; forming a photoresist removing region and a photoresist retaining region on the photoresist layer; forming a cross linking material in the photoresist removing region, and making the cross linking material to react with the photoresist retaining region in predefined conditions to form a reacting region; removing the cross linking material, retaining the photoresist retaining region and the reacting region, and etching a layer in a region where the cross linking material is removed; and removing a shielding layer in the photoresist retaining region and the reacting region to form a patterned layer. Conditions for the reaction between the cross linking material and the photoresist are controlled to modify the width of the reacting region, and a CD smaller than the resolution limit of exposure machine is reached without photoresist residual.

Abstract: Systems, apparatuses, and methods may include a first power source to output power at a first normal power level and a first peak power level and a second power source cooperating with the first power source to output power at a second normal power level and a second peak power level. A system peak power control unit may monitor workload power requirements and cause the first power source to output the first peak power level at a first time period and cause the second power source to output the second peak power level at a second time period, different from the first time period. The time periods may be contiguous or discontiguous.

Abstract: The present invention provides a method for generating hydroxyl radical and removing organic pollutants in water by utilizing an organic membrane. The inventive method generates hydroxyl radical by adopting a nitrocellulose membrane as a photocatalytic material, placing the nitrocellulose membrane in water, illuminating with the sun or a sunlamp having a wavelength above 280 nm as a light source, and causing the nitrocellulose membrane to undergo a photochemical reaction at the membrane surface, and the generation rate of hydroxyl radical can be achieved by adjusting the surface area of the membrane and a light intensity. The generated hydroxyl radical can remove phenol, bisphenol A, thiamphenicol and other typical organic pollutants in water very well.

Abstract: A method is provided for updating a connection parameter of a low-power Bluetooth device. The method includes, upon detection of a local switch of remote control modes, transmitting, to a controlled device, a prompt message indicating the local switch, such that a request for updating a connection parameter is generated based on the prompt message and transmitted to a Bluetooth remote control device. A valid time for the connection parameter is carried in the request, and is earlier than a default valid time. The method also includes monitoring, for every connection interval after the local switch, whether the request is received locally. The method also includes upon detection of the request, transmitting, to the controlled device, a response for agreeing to update the connection parameter. The method further includes updating the connection parameter between the Bluetooth device and the controlled device, when the valid time for the connection parameter arrives.

Abstract: Disclosed is an elastic corrugated pipe single-acting cylinder-driven mechanical gripper with a series-connection flexible hinge framework. The mechanical gripper consists of a palm and two flexible fingers or a palm and three flexible fingers. Each of the flexible fingers is identical in structure, and essentially consists of an elastic corrugated pipe single-acting cylinder (8) and a series-connection flexible hinge (4); configuration of the series-connection flexible hinge (4) is designed according to features of grasping objects; the mechanical gripper generates a grasping force by the elastic corrugated pipe single-acting cylinder (8).

Abstract: Various downhole logging tools and methods of using and making the same are disclosed. In one aspect, a downhole logging tool for inspecting one or more well tubulars includes a housing adapted to be supported in the one or more well tubulars by a support cable. A first transmitter, a second transmitter and a third transmitter are positioned in longitudinally spaced-apart relation in the housing and are operable to generate magnetic fields. Driving circuitry is operatively coupled to the first transmitter, the second transmitter and the third transmitter to selectively fire the first transmitter, the second transmitter and the third transmitter in multiple transmission modes to generate magnetic fields to stimulate pulsed eddy currents in the one or more well tubulars. A first receiver is positioned in the housing to sense decaying magnetic fields created by the pulsed eddy currents.

Abstract: A wrist watch charging assembly is provided. The wrist watch charging assembly may include a charging cord, a charging port connector and a charging head that are electrically connected to two ends of the charging cord, and a mobile pin electrically connected to a circuit board inside the watch case, wherein the charging cord is fixed relative to the watch band, and the charging head is attached onto the watch case by means of magnetic adhesion to be in electrical contact with the mobile pin. A wrist watch that has an integrated wrist watch charging assembly is also provided. The end of the charging head for connecting the mobile pin is optionally snapped into a holding groove on the watch band, and the charging port for external connection is optionally snapped into a charging port cap on the watch band.

Abstract: The present disclosure provides a method and device for removing an integrated circuit. The device is used to remove the integrated circuit from a display panel. The device includes a heating unit configured to contact and heat the display panel, and a retractable clamping-taking component configured to clamp and take the integrated circuit on the display panel which has been heated. According to embodiments of the present disclosure, the method and device may remove the integrated circuit from the display panel without destroying the display panel and increase efficiency of removing the integrated circuit.

Abstract: Example methods and apparatuses for file compaction in a key-value store system relating to the field of data processing technologies are described. One example method for file compaction in a key-value store (KV-Store) system includes compacting, according to a to-be-deleted log (Delete Log) that corresponds to a to-be-compacted sorted string table (SSTable), the to-be-compacted SSTable to generate a new SSTable. A key corresponding to a non-latest value in the KV-Store system and stored in the to-be-compacted SSTable is recorded in the Delete Log, and the new SSTable does not include a key-value pair that corresponds to the key in Delete Log. The to-be-compacted SSTable is then deleted.

Abstract: The invention relates to a truncated rotavirus VP4 protein, a sequence encoding the same, a method for preparing the same, and a pharmaceutical composition and a vaccine comprising the protein, wherein the protein, the pharmaceutical composition and the vaccine are useful for preventing, alleviating or treating rotavirus infection and a disease caused by rotavirus infection, such as rotavirus gastroenteritis and diarrhea. The invention further relates to use of the protein in the manufacture of a pharmaceutical composition or a vaccine for preventing, alleviating or treating rotavirus infection and a disease caused by rotavirus infection, such as rotavirus gastroenteritis and diarrhea.