Abstract: The present invention provides a vertically stacked light-emitting diode (LED) structure, which comprises a substrate, a first light-emitting device, a first reflection layer, a second light-emitting device, a second reflection layer, and a third light-emitting device. The layers are stacked sequentially. The first light-emitting device, the second light-emitting device, and the third light-emitting device are connected electrically to the pads located on the edges of the substrate. In addition, the first reflection layer and the second reflection layer are used to reflect and filter the light from the first light-emitting device, the second light-emitting device, and the third light-emitting device. By using this structure, the area of the light-emitting diode structure can be further shrunk.

Abstract: A joint imaging system based on unmanned aerial vehicle platform and an image enhancement fusion method are provided. The system includes a flying unit as a load platform, a shutter control system for controlling the operation of a load camera, a posture control system for recording the movement track and POS data of the flying unit, an airborne image transmission system for communicating with ground equipment, and an onboard computing unit with an image processing module for receiving the output images and performing image processing and fusion.

Abstract: A micro light emitting diode (LED) is provided. The micro LED includes a first light emitting unit and a second light emitting unit disposed on a top of the first light emitting unit. A first electrode of the first light emitting unit is inserted through a groove of the second light emitting unit and electrically connected with a substrate. A third light emitting unit is either shielded by the first light emitting unit or arranged at one side of the first light emitting unit. The first light emitting unit, the second light emitting unit, and the third light emitting unit are connected with a common connection point of the substrate by respective common electrodes. Thus an area of a light emitting surface of the micro LED is further reduced.

Abstract: A display panel includes a substrate and a plurality of pixel structures disposed on the substrate. Each of the pixel structures includes a first light-emitting element, a second light-emitting element, and a third light-emitting element. The first light-emitting element is disposed on the substrate and configured to generate a first colored light. A light output surface of the first light-emitting element includes a combined region. The second light-emitting element is disposed on a part of the combined region and configured to generate a second colored light. The third light-emitting element is disposed on the other part of the combined region and configured to generate a third colored light.

Abstract: Herein are described data acquisition systems and methods applying such systems to determine three-dimensional (3D) diffusion tensors, and simultaneously, to perform 3D structure imaging. Example data acquisition systems can include computing systems in communication with modified light sheet microscopes that are configured for high-speed volumetric imaging to record 3D diffusion processes and high-resolution 3D structural imaging.

Abstract: A method and an apparatus for evaluating transmission impairments of a multiplexing converter. According to the method, impairments of a multiplexing converter are equivalent to the equivalent multiplicative noise and the equivalent additive noise, so as to allow evaluation of transmission impairments of the multiplexing converter, thereby to allow evaluation of the performance of a communication system. The multiplexing converter is a multiplexing analog-to-digital converter, or a multiplexing digital-to-analog converter. According to the present application, impairments of a multiplexing converter can be evaluated accurately, the performance evaluation of a communication system using the multiplexing converter is given, without being affected by an amplitude, a modulation format and a transmission rate of an input signal.

Abstract: The present disclosure provides an apparatus and method for measuring a nonlinear signal-to-noise ratio, and a test instrument. The method for measuring a nonlinear signal-to-noise ratio may include performing notch operation on at least one frequency point in a spectrum of an input signal in a symbol domain or a bit domain; performing spectrum measurement on an output signal after passing through a nonlinear system; and estimating a nonlinear signal-to-noise ratio of at least one frequency point of the nonlinear system according to a spectrum of the output signal. According to the embodiments of the present disclosure, when the notch operation is performed, internal structures of symbols or bits of the input signal may be retained, and an accuracy of the measurement of the nonlinear signal-to-noise ratio may be improved.

Abstract: A method, an apparatus and a system to measure nonlinear related parameters of a nonlinear device. The apparatus comprises a memory and a processor coupled to the memory to control execution of a process to: generate a first signal according to a signal to be measured, the first signal and the signal to be measured having a signal probability distribution that is same, and the first signal having at least one notch frequency; and calculate, according to an output signal of the nonlinear device when the first signal is input into the nonlinear device, nonlinear related parameters of the nonlinear device when the signal to be measured is transmitted.

Abstract: A method, an apparatus and a system to measure nonlinear correlation parameters of a nonlinear device, a processor to, perform band-stop filtering on a signal to be measured to generate a notch signal, and calculate a first nonlinear correlation parameter of the nonlinear device when the signal to be measured is transmitted according to a first output signal of the nonlinear device after the notch signal is input into the nonlinear device; calculate gain compression correction coefficients according to a second output signal of the nonlinear device after the first input signal is input into the nonlinear. The first input signal and the signal to be measured may have identical power and different signal probability distribution. The processor is to correct the first nonlinear correlation parameter according to the gain compression correction coefficients to obtain a second nonlinear correlation parameter of the nonlinear device when the signal to be measured is transmitted.

Abstract: A performance estimation apparatus and method for a nonlinear communication system and an electronic device. The nonlinear communication system is equated with by an equivalent model including an equivalent linear model and an equivalent additive noise model, and the equivalent additive noise outputted by the equivalent additive noise model is mathematically uncorrelated to the signal inputted into the equivalent model. Performances of the nonlinear communication system of different modulation formats at different baud rates may be accurately estimated.

Abstract: The present disclosure provides an apparatus and method for measuring a nonlinear signal-to-noise ratio, and a test instrument. The method for measuring a nonlinear signal-to-noise ratio may include performing notch operation on at least one frequency point in a spectrum of an input signal in a symbol domain or a bit domain; performing spectrum measurement on an output signal after passing through a nonlinear system; and estimating a nonlinear signal-to-noise ratio of at least one frequency point of the nonlinear system according to a spectrum of the output signal. According to the embodiments of the present disclosure, when the notch operation is performed, internal structures of symbols or bits of the input signal may be retained, and an accuracy of the measurement of the nonlinear signal-to-noise ratio may be improved.

Abstract: A method and apparatus for generating a signal. The method includes: by taking a reference signal as a standard, cyclically performing isoprobabilistic processing and isospectral processing, or cyclically perform isoprobabilistic processing, perturbation processing and isospectral processing, on an input signal, until an obtained signal satisfies both a requirement on a target probability distribution and a requirement on a target spectrum, where a probability distribution of the reference signal satisfying the requirement on a target probability distribution, the isoprobabilistic processing referring to processing that makes the probability distribution of an output signal identical to the probability distribution of the reference signal. Therefore, a signal that satisfies both the requirement on the specific probability distribution and the requirement on the spectrum can be generated, and the degree of compliance is higher.

Abstract: This disclosure provides a signal generation device and an equalization processing device. The signal generation device generates a pilot sequence and payload, the pilot sequence and the payload having identical or similar amplitude probability characteristics. Hence, nonlinear interference may be resisted, and performance of the communication system may be improved.

Abstract: A performance estimation apparatus and method for a nonlinear communication system and an electronic device. The nonlinear communication system is equated with by an equivalent model including an equivalent linear model and an equivalent additive noise model, and the equivalent additive noise outputted by the equivalent additive noise model is mathematically uncorrelated to the signal inputted into the equivalent model. Performances of the nonlinear communication system of different modulation formats at different baud rates may be accurately estimated.

Abstract: Herein are described data acquisition systems and methods applying such systems to determine three-dimensional (3D) diffusion tensors, and simultaneously, to perform 3D structure imaging. Example data acquisition systems can include computing systems in communication with modified light sheet microscopes that are configured for high-speed volumetric imaging to record 3D diffusion processes and high-resolution 3D structural imaging.

Abstract: Devices and methods for super-resolution optical microscopy are described. Devices include an optical multiplexer to develop an excitation/illumination optical beam that includes alternating pulses of different profiles. Devices also include a signal processing unit to process a sample response to excitation/illumination beam and to subtract the neighboring pulses of the different profiles from one another on a pulse-to-pulse basis. Devices can be incorporated in existing confocal microscopy designs. As the subtraction effectively reduces the volume of the response signal, the spatial resolution of the systems can be markedly improved as compared to previously known optical microscopy approaches.

Abstract: A vaccine comprising antigen and a matrix of biodegradable polymer blend, wherein the polymer blend comprises hydrophobic polymer and amphiphilic block copolymer, and the vaccine exists in form of microcapsules that comprise a multi-cavity structure inside, and has an average particle diameter of preferably 10-100 ?m and more preferably 30-60 ?m, and is prepared by means of the following method: making porous microspheres from the polymer blend, then mixing the porous microspheres with antigen-containing solution, and then sealing openings of porous microspheres that have been loaded with the antigen-containing solution to form an opening-sealed microcapsule loaded with the antigen.