Abstract: A speaker includes housing having receiving space and sound-producing unit received in receiving space. The sound-producing unit includes frame; vibration unit; magnetic circuit unit; spring damping element elastically connects magnetic circuit unit to frame and supports magnetic circuit unit to vibrate in accommodating space. A weight is fixed to magnetic circuit unit. In speaker, magnet or yoke and spring damping element form another vibration unit. This another vibration unit and the vibration unit that is composed of voice diaphragm, dome, and voice coil are subjected to interaction forces and vibrate in opposite directions, which reduces force on frame. The weight is added to magnetic circuit unit, which reduces the impact of air in rear cavity on magnet. Moreover, by adjusting mass of weight and stiffness and damping of spring damping element, corresponding resonant frequency and damping of magnetic circuit unit may be set, thereby achieving an optimal vibration isolation effect.

Abstract: The present disclosure discloses a speaker comprising a housing and a sound producing unit fixed to the housing; the sound producing unit comprises: a frame, a vibration system, a magnetic circuit system and a spring damping element; the spring damping element supports the magnetic circuit system in vibration in the holding space; a counterweight block housed in the rear cavity and fixed to a side of magnetic bowl away from the magnetic circuit system. The speaker of the present invention constitutes another vibration system by means of a magnet or a magnetic bowl and a spring damping element, which vibrates opposite to the vibration system consisting of a diaphragm-dome-voice coil, resulting in a reduction of the force on the cone frame; the addition of a counterweight block reduces the effect of air in the rear cavity on the magnet; the magnetic through-holes and leakage holes optimize vibration damping.

Abstract: A method for compressing images based on joint photographic experts group (JPEG) standard includes: compressing data of one or more first image blocks with a first compression level to produce compression data of the one or more first image blocks; adjusting the first compression level to obtain a second compression level according to at least one of a data size-related index regarding the compression data of the one or more first image blocks or a transmission-related index regarding transmission of the compression data of the one or more first image blocks; and compressing data of a second image block with the second compression level.

Abstract: A user equipment (UE) operating in a discontinuous reception (DRX) mode may receive a wake-up signal indicating that the UE may skip the next ON duration of the DRX cycle, i.e., the UE is instructed to not wake up during a next ON time during the DRX cycle to monitor communication signals, such as data signals or control signals. The UE may be configured to receive downlink (DL) positioning reference signals (PRSs), e.g., during the next ON duration of the DRX cycle. The UE respond to the PRS configuration and the wake-up signal by remaining in DRX sleep mode and not receiving the PRS or transitioning to DRX ON mode to receive the PRS during which the UE may monitor or not monitor communication signals. The location server may receive indications of the wake-up signal configuration and status from a base station or the UE.

Abstract: Provided are a time difference determination method, an electronic device, and a storage medium. The time difference determination method includes determining a time difference according to at least one of a first-type parameter or a second-type parameter. The first-type parameter include at least one of a timing advance NTA or a first timing advance offset NTA,offset. The second-type parameter include at least one of a timing parameter index Tdelta, a timing parameter reference Ndelta, or a timing parameter granularity Gstep.

Abstract: The present invention provides a speaker box including a housing, a sound unit and a magnetic circuit coupling valve. The sound unit includes a bracket, a vibration system and a magnetic circuit system including a secondary magnet. The housing includes a bottom cover having leakage holes. The magnetic circuit coupling valve is accommodated in a rear cavity and includes a support, a negative stiffness diaphragm and a coil. The negative stiffness diaphragm faces to the leakage holes. The coil receives an external control signal and generates an electromagnetic field with the secondary magnet to drive the negative stiffness diaphragm to seal the leakage holes, or make the leakage holes open, or make the leakage holes partially open or closed. Compared with a related technology, the speaker box has fine acoustic performance and is able to accurately control communication of a rear cavity with the outside.

Abstract: In a sidelink communication method, an SL transmission is sent, where the SL transmission corresponds to a candidate feedback occasion set which comprises multiple candidate feedback occasions in the time domain; first feedback information is received at the candidate feedback occasion set; and second feedback information is reported to a higher layer according to the first feedback information.

Abstract: During positioning of a user equipment (UE), (DL) positioning reference signals (PRS) transmitted by one or more transmission reception point (TRP) in a wireless communication system may be preempted or punctured by higher priority transmissions, such as ultra-reliable low-latency traffic (URLLC). A PRS preemption indication (PI) may be provided to a UE identifying one or more TRPs affected by preemption. The PRS PI may further identify the time domain and frequency domain of the preempted DL PRS transmissions. The PRS PI may identify the time domain, e.g., based on a number of PRS symbols between two monitoring occasions, wherein only PRS symbols that contain positioning reference signals associated with the group of TRPs are counted. The PRS PI may identify the frequency domain by identifying at least one of four or more frequency sub-bands of the preempted DL PRS transmissions.

Abstract: Systems and methods of imaging a sample using a charged-particle beam apparatus are disclosed. The charged-particle beam apparatus may include a compound objective lens comprising a magnetic lens and an electrostatic lens, the magnetic lens comprising a cavity, and an electron detector located immediately upstream from a polepiece of the magnetic lens and inside the cavity of the magnetic lens. In some embodiments, deflectors may be located between the electron detector and the opening of the polepiece adjacent to the sample to achieve a large field of view. Electron distributions among the detectors can be manipulated without changing the landing energy by changing the potential of the control electrode(s) in the electrostatic objective lens. The electron source can be operated with several discrete potentials to cover different landing energies, while the potential difference between electron source and the extractor is fixed.

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive a configuration identifying a first set of frequency resources for transmitting a sounding reference signal, where the sounding reference signal may be used at least for downlink channel state information acquisition. The UE may receive an indication of an association between the configuration for the sounding reference signal and a second set of frequency resources and determine, based on the association, values for one or more sounding reference signal transmission parameters for the first set of frequency resources. The UE may transmit the sounding reference signal on the first set of frequency resources based on the determined one or more values.

Abstract: The present invention provides an encoder including a quantization circuit, a control circuit and an encoding circuit is disclosed. The quantization circuit is configured to generate quantized data corresponding to a CTU according to image data, wherein the CTU comprises at least one TU. The control circuit is configured to determine a number of allocated bits for each TU in the CTU, where the number of allocated bits for each TU is determined based on a sum of remaining bits of the TUs that have been encoded. The encoding circuit is configured to encode each TU to obtain encoded data according to the number of allocated bits of the TU in the CTU.

Abstract: The present disclosure relates to a finite control set model predictive control method of an LLCL battery energy storage converter, wherein the method uses a finite control set model predictive control method to control an energy storage converter based on an LLCL filter, establishes and discretizes a state space mathematical model of the LLCL battery energy storage converter to obtain a discrete model, converts reference values of a current at a grid side into reference values of a current at a converter side and a capacitor voltage based on a phasor method at the same time, defines a cost function, compares an output result of a prediction model with the reference value, selects an optimal voltage vector and selects a most appropriate switching state to work.

Abstract: The present invention provides a micro speaker, including a frame with a containment space, and a magnetic circuit system and a vibration system contained in the containment space. The vibration system includes a first diaphragm, a circuit board, a skeleton, and a voice coil. The micro speaker further includes a welding plate structure and a balance component. The voice coil includes a lead wire electrically connected with the welding plate structure. By setting the balance component on the skeleton, the present invention can keep the weight balance at both ends of the skeleton, so as to ensure that the skeleton will not sway when the vibration system is working, so that the vibration of the skeleton is stable and the sound quality is improved.

Abstract: The present invention discloses a micro speaker, including a frame with a containment space, a magnetic circuit system and a vibration system accommodated in the containment space. The vibration system includes a first diaphragm, a dome skeleton fixed to the first diaphragm, and a voice coil fixed on the dome skeleton. A welding plate structure is fixed on the dome skeleton, and a first circuit board and a second circuit board fixed to the frame respectively. The first diaphragm includes a first diaphragm area and a second diaphragm area. The thickness of the first diaphragm area is greater than the thickness of the second diaphragm area. The local thickening material is adopted to avoid the problem of speaker rigidity asymmetry caused by unbalanced heat distribution, so as to realize the stable operation of the speaker, and the manufacturing process is simple.

Abstract: A pulp molded cup lid includes a lid top portion, a transverse extension portion and a longitudinal extension portion. The transverse extension portion is connected to a lower side of an outer edge of the lid top portion and extends radially outward. The longitudinal extension portion is connected to an outer edge of the transverse extension portion and extends axially downward. The longitudinal extension portion is cylindrical. The pulp molded cup lid further includes an inner convex buckle disposed on an inner wall of the longitudinal extension portion. The inner convex buckle is integrally formed with the longitudinal extension portion. The inner convex buckle protrudes inward relative to the inner wall of the longitudinal extension portion. An outer wall of the longitudinal extension portion defines a rolling groove. The rolling groove is configured to further reduce an inner diameter of the inner convex buckle.

Abstract: A transfer device applied to a robotic arm for pulp molding, which includes a wet blank transfer mold provided with a closed air chamber therein, a front surface with at least one inward concave matching cavity capable of being sleeved outside a pulp wet blank container and recessed toward the closed air chamber side, a back surface connected with a moving frame, oriented parallel to the wet blank transfer mold, through a guide mechanism, and a driver connected between the back surface of the wet blank transfer mold and the moving frame, where the driver drives the moving frame to move relative to the wet blank transfer mold and the moving frame is provided with a plurality of vacuum suction cups at uniform intervals on a side opposite from the wet pulp transfer mold. The device may transfer a wet blank and collect a molded product at the same time.

Abstract: A transfer device includes a wet blank transfer mold internally provided with an airtight air chamber, a front face with a recessed matching cavity configured to be sheathed on the outside of a pulp wet blank container and is recessed towards the airtight air chamber. The recessed matching cavity includes several small communicating holes provided respectively in an inner wall of each recessed matching cavity and at the bottom of the recessed matching cavity for communication between the recessed matching cavity and the airtight air chamber. A moving frame parallel to the wet blank transfer mold with evenly spaced vacuum cups, is connected to a back face of the wet blank transfer mold via a guiding mechanism. A driver connected between the back face of the wet blank transfer mold and the moving frame to drive the moving frame to move relative to the wet blank transfer mold.

Abstract: A compute device implements a technique for facilitating selective access to hardware codec resources. The compute device executes, in a trusted execution environment, firmware for controlling graphics hardware of a device that supports a plurality of video codecs. The compute device obtains codec control data specific to the device from a remote system and then configures the firmware to implement a codec policy for selectively providing access to the plurality of video codecs based on the codec control data.

Abstract: A speaker includes a frame, a vibration system, and a magnetic circuit system. The vibration system and the magnetic circuit system are respectively disposed on the frame. The vibration system includes a sound film and a voice coil. The voice coil drives the sound film to vibrate and sound. The magnetic circuit system includes a lower clamping plate, a first magnetic steel, and a second magnetic steel. The first magnetic steel is disposed on the lower clamping plate. The annular second magnetic steel is disposed on the lower clamping plate and surrounds the first magnetic steel. The first magnetic steel and the second magnetic steel are disposed at intervals to form a first gap. The speaker has better performance.

Abstract: A speaker includes a frame, a vibration system, and a magnetic circuit system. The vibration system and the magnetic circuit system are respectively disposed on the frame. The vibration system includes a sound film, flexible circuit boards, a connecting rack, and a voice coil. The flexible circuit boards are disposed at intervals with the sound film. The connecting rack is connected with the sound film and the flexible circuit boards. The voice coil is fixed to the connecting rack. The voice coil includes a first voice coil and a second voice coil, and the second voice coil surrounds outside the first voice coil. The speaker of the present disclosure effectively solves the problem of supplying power to the first voice coil during the voice coil driving. The voice coil driving effectively improves the BL, provides a larger driving force, and improves sensitivity, so that performance of the speaker is better.