Abstract: An equalizer circuit, a method for sampling data and a memory are provided. The equalizer circuit includes a first input buffer circuit, a second input buffer circuit and a selecting and sampling circuit. The first input buffer circuit and the second input buffer circuit are respectively connected with the selecting and sampling circuit, and reference voltages used in the first input buffer circuit and the second input buffer circuit are different from each other. The selecting and sampling circuit selects to perform data sampling on a data signal outputted by the first input buffer circuit or the second input buffer circuit according to data outputted previously by the equalizer circuit, and takes sampled data as data outputted currently by the equalizer circuit.

Abstract: A bridge structure dynamic response of a bridge structure under the action of heavy duty vehicle load is obtained through sensors arranged on the bridge structure; according to vertical vibration acceleration ao and vertical deflection yo of the bridge at a center of gravity o of the heavy duty vehicle and speed of the heavy duty vehicle Uvehicle, a response of a table top of a vibration table is reconstructed, and interaction force of the vehicle-bridge coupling model is obtained; a nonlinear finite element model of the bridge structure is established, and the vehicle-bridge interaction force is taken as external force, and the dynamic response of the bridge structure is taken as a structural response, and modification of the finite element model of the bridge structure is completed through a nonlinear parameter identification method. The invention is mainly used for updating a bridge model.

Abstract: An impedance calibration circuit, an impedance calibration method, and a memory are provided. The impedance calibration circuit includes a parameter module, an initial value generation module, and a calibration module. The parameter module is configured to perform environment detection processing and output an environment parameter signal; the initial value generation module is configured to receive the environment parameter signal, and output an initial calibration value based on the environment parameter signal when the calibration instruction signal is received; and the calibration module is configured to receive the initial calibration value, and perform impedance calibration processing based on the initial calibration value when the calibration instruction signal is received.

Abstract: A receiver includes the following: a signal receiving circuit, including a first MOS transistor and a second MOS transistor, where a gate of the first MOS transistor is configured to receive a reference signal and a gate of the second MOS transistor is configured to receive a data signal, and the signal receiving circuit is configured to output a comparison signal, the comparison signal being configured to represent a magnitude relationship between a voltage value of the reference signal and a voltage value of the data signal; and an adjusting circuit, including a third MOS transistor, where a source of the third MOS transistor is connected to a source of the first MOS transistor, a drain of the third MOS transistor is connected to a drain of the first MOS transistor, and a gate of the third MOS transistor is configured to receive an adjusting signal.

Abstract: Provided is a balanced armature type speaker. The balanced armature type speaker includes a housing, a driving assembly and a diaphragm. The housing includes an upper inner cavity and a lower inner cavity, the lower inner cavity and the upper inner cavity are through from top to bottom, the driving assembly is located in the lower inner cavity, and the driving assembly includes a magnet, a coil, an armature and an ejector pin. The armature is inserted into the magnet and the coil sequentially, the ejector pin is fixedly connected to the armature and the diaphragm, and the diaphragm is located in the upper inner cavity. The housing is shaped to be wide at the upper part and narrow at the lower part, and in the horizontal direction, a width of the upper inner cavity is larger than a width of the lower inner cavity.

Abstract: The present invention discloses an extensible flexible hose comprise one elastic inner layer, one elastic textile reinforcement layer and one elastic outer layer, where the elastic textile reinforcement layer placed on the outer surface of the elastic inner layer, the elastic outer layer disposed on the elastic textile reinforcement layer, while the elastic inner layer and the elastic textile reinforcement layer are reciprocally coupled, the elastic outer layer and the uncovered surface area of the elastic inner layer are reciprocally joined to form a unitary tubular member. The elastic textile reinforcement layer comprising a twill weave textile layer, with stretch yarns longitudinally distributed among. The objective of the present invention is to improve the phenomenon that the telescopic water pipe is liable to be damaged due to strong friction between inner core and outer sheath, to prolong the service life of the extensible flexible hose.

Abstract: A comparison circuit includes a reference adjustment module, a signal receiving module, and a control module. The reference adjustment module is configured to receive a first reference signal and output a second reference signal. The reference adjustment module is further configured to receive an adjustment signal, and unidirectionally adjust the equivalent coefficient within a preset value interval when the adjustment signal is received. The signal receiving module is configured to receive the second reference signal and an external signal. The second reference signal after experiencing a mismatch of the signal receiving module is equivalent to a third reference signal. The control module is configured to: receive an enable signal and the comparison signal; and during a period of continuously receiving the enable signal, when the comparison signal jumps, terminate the output of the adjustment signal.

Abstract: While mobile device location remains, private, user transaction controls are applied to a specific authorization request. The user transaction controls are pre-configured by the user of the mobile account holder device and identified by the enriched merchant data. Location algorithms predict transaction locations used to obtain enriched merchant data responsive to location privacy mode. Responsive to the user transaction controls, a fraud recommendation response is sent to the approval system, in real time with the transaction. The fraud recommendation response prevents a false negative by using an enriched merchant location rather than the raw merchant location.

Abstract: The present invention provides a method for discovering a Bluetooth device. The method includes: receiving, by a second Bluetooth device, a first broadcast frame of a first Bluetooth device; determining, by the second Bluetooth device, whether the first broadcast frame includes first indication information; and if the first broadcast frame includes the first indication information, sending, by the second Bluetooth device, at least one second broadcast frame within a preset time period after receiving the first broadcast frame, where the second broadcast frame includes second indication information, and the second indication information is used to instruct a Bluetooth device receiving the second broadcast frame to exchange information with the second Bluetooth device.

Abstract: The present application proposes a display panel and a display device, the display panel includes a liquid crystal display module, a reflective film and a fingerprint identification module. The liquid crystal display module is on a first side of the reflective film, and the fingerprint identification module is on a second side of the reflective film opposite to the first side. The fingerprint identification module includes an invisible light emitting unit and an invisible light sensor. The invisible light emitting unit is configured to emit invisible light in a direction towards the reflective film, and the invisible light sensor is configured to receive reflected invisible light. The reflective film is configured to transmit the invisible light and reflect visible light reaching the reflective film through the liquid crystal display module.

Abstract: The invention discloses a MEMS pressure sensor, which includes a bulk silicon layer, a buried oxygen layer, a substrate, a varistor, a first passivation layer, an electrode layer, and a second passivation layer. The varistor is located on the upper surface of the buried oxygen layer, and the first passivation layer is a rectangular shell located on the upper surface of the buried oxygen layer; there is a through hole in the center of the top of the rectangular shell; the first passivation layer covers the varistor, and the gap between the first passivation layer and the varistor forms an isolation cavity. The electrode layer is located on the upper surface of the first passivation layer and is connected with the varistor via the through hole. The second passivation layer is located on the upper surface of the electrode layer.

Abstract: The invention discloses a MEMS pressure sensor, which includes a bulk silicon layer, a buried oxygen layer, a substrate, a varistor, a first passivation layer, an electrode layer, and a second passivation layer. The varistor is located on the upper surface of the buried oxygen layer, and the first passivation layer is a rectangular shell located on the upper surface of the buried oxygen layer; there is a through hole in the center of the top of the rectangular shell; the first passivation layer covers the varistor, and the gap between the first passivation layer and the varistor forms an isolation cavity. The electrode layer is located on the upper surface of the first passivation layer and is connected with the varistor via the through hole. The second passivation layer is located on the upper surface of the electrode layer.

Abstract: The present disclosure provides an offset voltage correction circuit and an offset voltage correction method, including: a data obtaining module, configured to receive a data signal and a reference signal, and obtain a data indicator signal based on a comparison result of the reference signal and an offset data signal, the offset data signal being a data signal superimposed with an offset signal; a trimming enable module, configured to receive the data signal, the reference signal, the data indicator signal and an enable signal, obtain a theoretical indicator signal based on a comparison result of the data signal and the reference signal if the enable signal is of a high level, and generate an enable flag signal based on a comparison result of the theoretical indicator signal and the data indicator signal; and an offset correction module, configured to cancel the offset signal based on the enable flag signal.

Abstract: The present disclosure relates to methods and devices for discovering a Bluetooth device. One example method includes receiving, by a second Bluetooth device, a first broadcast frame from a first Bluetooth device, determining, by the second Bluetooth device, whether the first broadcast frame includes first indication information, and if the first broadcast frame includes the first indication information, sending, by the second Bluetooth device, at least one second broadcast frame within a preset time period after receiving the first broadcast frame The second broadcast frame includes second indication information, and the second indication information is used to instruct a Bluetooth device receiving the second broadcast frame to exchange information with the second Bluetooth device.

Abstract: Embodiments allocate and synchronize virtual currency balance of a user among multiple user devices. A user profile is maintained at a central server. The user profile stores a total virtual currency balance and a designation of multiple user devices associated with the user. The total virtual currency balance may be divided among and allocated to the multiple user devices, for example, based on usage data associated with each user device. The portion of the total virtual currency balance allocated to each user device may be stored locally at a local wallet of the corresponding user device. The local virtual currency balance on a user device may be used to purchase goods or services, such as playing a game. If the locally stored virtual currency balance of a given user device runs low, the user device may request additional virtual currency from other user devices without contacting the central server.

Abstract: The present disclosure provides an offset voltage correction circuit and an offset voltage correction method, including: a data obtaining module, configured to receive a data signal and a reference signal, and obtain a data indicator signal based on a comparison result of the reference signal and an offset data signal, the offset data signal being a data signal superimposed with an offset signal; a trimming enable module, configured to receive the data signal, the reference signal, the data indicator signal and an enable signal, obtain a theoretical indicator signal based on a comparison result of the data signal and the reference signal if the enable signal is of a high level, and generate an enable flag signal based on a comparison result of the theoretical indicator signal and the data indicator signal; and an offset correction module, configured to cancel the offset signal based on the enable flag signal.

Abstract: An air purifier (10) uses an air purifier filter unit (12) and a sensor (26) for sensing the matter to be filtered by the air purifier filter unit. By monitoring (18) the performance of the air purifier combined with information about the air purifier filter unit, it is possible to determine a volume of the space in which the air purifier (10) is deployed.

Abstract: The present disclosure relates to an active neutral-point clamped (ANPC) three-level converter, and a method and controller for controlling thereof. The ANPC three-level converter includes at least one bridge leg, and a controller. Each of the at least one bridge leg includes multiple input terminals, an output terminal, and multiple switches connected between the multiple input terminals and the output terminal. The multiple input terminals include a first input terminal, a second input terminal, and a third input terminal. The multiple switches include a first external switch, a first internal switch, a first clamp switch, a second external switch, a second internal switch, and a second clamp switch. The method for controlling the NPC three-level converter includes a method for controlling the ANPC three-level converter to stop operating, and a method for controlling the ANPC three-level converter to start to operate.

Abstract: The present application belongs to the field of locomotive braking control, and relates to a locomotive braking control system and control method, including a brake cylinder equalizing pipe control system and a brake cylinder control system; wherein, the brake cylinder equalizing pipe control system can compare pre-control pressure of the brake cylinder and the pre-control pressure of the brake cylinder equalizing pipe, and output the higher one as the brake cylinder equalizing pipe pressure; and the brake cylinder control system can compare pre-control pressure of the brake cylinder and the brake cylinder equalizing pipe pressure, and output the higher one as the brake cylinder pressure to realize brake; the redundancy of the two control systems can also be realized.

Abstract: A dual reference voltage generator, an equalizer circuit, and a memory are provided. The dual reference voltage generator is configured to receive an original code, a first code and a second code, generate a first reference voltage according to the received original code and first code, and generate a second reference voltage according to the received original code and second code. The first reference voltage is different from the second reference voltage.