Abstract: The present application discloses a conductive high-strength diamond/amorphous carbon composite material and a preparation process thereof. The diamond/amorphous carbon composite material is composed of an amorphous carbon continuous phase and multiple separate diamond phases embedded in the amorphous carbon continuous phase, wherein the diamond phases exhibit an ordered sp3 hybrid state, and the amorphous carbon continuous phase exhibits a disordered sp2 hybrid state. The present application further discloses a process for preparing the above diamond/amorphous carbon composite material. The process comprises using sp3 carbon powder or glassy carbon as a raw material to obtain the above-mentioned material by sintering. The diamond/amorphous carbon composite material shows good electrical conductivity, good electrical discharge machining ability, good chemical stability and light weight, and has broad application prospects in aerospace, automobile industry and biomedical equipment.

Abstract: This application provides a display device and a pixel calibration method therefor, and relates to the field of display technologies. When an automatic calibration function is enabled, and a preset automatic calibration condition is met, a pixel calibration strategy corresponding to a temperature range within which a current temperature of a display module falls is found from a correspondence between a temperature range and a pixel calibration strategy. A to-be-calibrated display panel is found according to the pixel calibration strategy. A pixel that is used to emit light on the to-be-calibrated display panel is determined. Even if pixels that are used to emit light on display panels are misaligned because expansion degrees of the display panels are different, the pixels that are used to emit the light on the display panels can still be one-to-one aligned through calibration.

Abstract: A display apparatus, a picture adjustment method, and a device are disclosed. The display apparatus includes a display panel, a control module, a gamma module, a current source module, and a pulse width modulation (PWM) module. The control module sends a present temperature value, a present current value, and a present brightness value to the gamma module. The gamma module determines a target current value based on the present current value and the present temperature value, and sends the target current value to the current source module. The gamma module determines a present grayscale value based on the present temperature value and the present brightness value. The gamma module determines a target grayscale value based on the present grayscale value and the present temperature value, and sends the target grayscale value to the PWM module.

Abstract: A method for environment-specific training of a machine learning model, comprises receiving, for a local environment, a data stream including a plurality of sequential data snippets. Programmed labels are generated for each data snippet using a student version of a machine learning model. A portion of data snippets and associated programmed labels are selected and uploaded to a server-side computing device for evaluation by a teacher version of the machine learning model. An environment-specific training update is received from the server-side computing device. This training update is based on a comparison of the selected programmed labels and pseudolabels generated for the selected portion of data snippets by the teacher version. The environment-specific training update is applied to the student version to generate an updated student version. The updated student version of the machine learning model is then used to generate programmed labels for newly received data snippets.

Abstract: Embodiments of this application provide a display, a manufacturing method thereof, and an electronic device, and relate to the field of display technologies, to improve performance of the display. The display includes a first primary-color light emitting diode, a second primary-color light emitting diode, and a third primary-color light emitting diode that are stacked. The first primary-color light emitting diode includes a first overlapping portion and a first light emission portion. The second primary-color light emitting diode includes a second overlapping portion and a second light emission portion, the second light emission portion covers the first overlapping portion, and the second overlapping portion exposes the first light emission portion. The third primary-color light emitting diode covers the second overlapping portion and exposes the first light emission portion and the second light emission portion.

Abstract: Examples of a projection optical engine, an electronic device, and a projection imaging method are described. One example of a light combination apparatus is configured to combine light emitted by one pixel of a first color and light emitted by one pixel of a second color, and then emit combined light. The light emitted by the light combination apparatus is imaged on an imaging plane after passing through a pixel expansion apparatus and an optical engine lens. The pixel expansion apparatus is configured to enable the light emitted by the light combination apparatus to be imaged at different locations on the imaging plane at different moments.

Abstract: A projection display system and a full-color projection optical engine are disclosed. Pixel dimensions of the blue light-emitting pixel array and pixel dimensions of the green light-emitting pixel array are both smaller than pixel dimensions of the red light-emitting pixel array. At least one group of pixel expansion apparatuses is disposed between the red light-emitting pixel array and the light-combining prism. The at least one group of pixel expansion apparatuses is configured to obtain expanded red light based on the red light, where resolution of an image obtained based on the expanded red light is n times resolution of an image obtained based on the red light, and n>1.

Abstract: The present disclosure relates to display devices and imaging control methods of a display device. One example display device includes a display, a lens assembly, a driver, and a controller. The controller is configured to convert a first image into n consecutive second images, and generate a drive signal used to control the driver to move, where an image resolution of the second image is less than an image resolution of the first image, a refresh rate of the second image is greater than a refresh rate of the first image, and n?2. The driver is configured to drive, under control of the drive signal, at least one optical element or the display connected to the driver to move to adjust a display location of the second image displayed by the display, so that the n consecutive second images are displayed at n different locations.

Abstract: A display circuit includes a plurality of current source branches and a plurality of pixel branches. Each current source branch includes a first transistor and a control circuit. Each pixel branch includes a second transistor, a pulse width control switch transistor, and a pixel unit that are connected in series. The turned-on first transistor and the turned-on second transistor form a current mirror structure. In the current mirror structure, there is a proportional relationship between a current flowing through each of the plurality of first transistors and a current flowing through the turned-on second transistor. Whether each first transistor is turned on is controlled through the control circuit, to adjust a value of the current flowing through each pixel unit through the second transistor.

Abstract: A processing circuit includes a load unit and a detection circuit, and a proportional relationship exists between a load value of the load unit and a load value of a first pixel line. The load value of the load unit is obtained through the detection circuit, to obtain the load value of the first pixel line. Then, based on the load value of the first pixel line, a drive current circuit is controlled to provide a corresponding drive current to the first pixel line. When the drive current enables a light-emitting diode (LED) on the first pixel line to emit light within drive time, a current value is as small as possible.

Abstract: A battery module includes a top plate, a bottom plate, two end plates, and two side plates. At least one of the two end plates includes a plate body including a hollow structure provided with first reinforcing grooves and a first connecting hole. At least two of the first reinforcing grooves are arranged at intervals along a first direction of the plate body. At least one of the two side plates includes a base plate and a base mounting plate. The base plate is provided with a fixing hole penetrating through the base plate. The base mounting plate is bent and connected to the base plate and includes an outer connecting part provided with a first mounting hole. The first connecting hole is configured for a first fixing member to pass through. The first mounting hole is configured for a second fixing member to pass through.

Abstract: This application relates to the field of AR technologies, and in particular, to AR glasses and an AR glasses system. The AR glasses further include an optical receiver/transmitter, a light propagation medium, a power supply apparatus, and a photovoltaic apparatus. The optical receiver/transmitter is configured to emit light. The optical receiver/transmitter is disposed on a frame. The light propagation medium is configured to guide propagation of the light emitted by the optical receiver/transmitter, and the light propagation medium is disposed on an eyeglass. The power supply apparatus is configured to provide electric energy for the AR glasses. The photovoltaic apparatus is configured to absorb light that does not enter the light propagation medium, and convert light energy into electric energy. The photovoltaic apparatus is electrically connected to the power supply apparatus, and the electric energy generated by the photovoltaic apparatus is transmitted to the power supply apparatus.

Abstract: A micro-light emitting diode (MicroLED) display screen includes a MicroLED array substrate, where a plurality of pixels are set in the MicroLED array substrate, and the plurality of pixels include at least a first subpixel and a second subpixel; a light scattering structure, prepared above the first subpixel, and configured to scatter first emitting light generated by the first subpixel; a light conversion structure, prepared above the second subpixel, and configured to convert second emitting light generated by the second subpixel; and a metal isolation structure, prepared between the light scattering structure and the light conversion structure, where the light scattering structure, the light conversion structure, and the metal isolation structure are located at a same layer.

Abstract: A projection apparatus includes a pixel array disposed on a substrate, where the pixel array has a light-emitting feature; a cantilever beam disposed on the substrate and configured to fasten a micro-electro-mechanical system (MEMS) lens, where the cantilever beam is disposed outside the pixel array, the MEMS lens is configured to scan the pixel array, the cantilever beam and the MEMS lens form a MEMS lens scanner; and a driver coupled to the pixel array and the MEMS lens and configured to drive the pixel array having a light-emitting feature to perform color display to obtain a projected image.

Abstract: This application provides a display panel, a preparation method therefor, and a display apparatus. A first display region of the display panel has an OLED pixel, a second display region has a Micro LED pixel, the Micro LED pixel has a light emitting region and a light transmission region, and a camera is disposed below the second display region. After the Micro LED pixel is used in the second display region, display pixels having a same area in the first display region and the second display region can be designed, to implement display effect consistency between the first display region and the second display region. Because a size of the Micro LED pixel for light emitting is small, it can be ensured that the Micro LED pixel has a large light transmission region, so that light transmittance of the second display region can be improved.

Abstract: To improve the accuracy and efficiency of object detection through computer digital image analysis, the detection of some objects can inform the sub-portion of the digital image to which subsequent computer digital image analysis is directed to detect other objects. In such a manner object detection can be made more efficient by limiting the image area of a digital image that is analyzed. Such efficiencies can represent both computational efficiencies and communicational efficiencies arising due to the smaller quantity of digital image data that is analyzed. Additionally, the detection of some objects can render the detection of other objects more accurate by adjusting confidence thresholds based on the detection of those related objects. Relationships between objects can be utilized to inform both the image area on which subsequent object detection is performed and the confidence level of such subsequent object detection.

Abstract: A driving method and driving apparatus for a light-emitting diode LED display, and an LED display are provided, to decrease power consumption of the LED display. The driving apparatus includes temperature sensors (201, . . . , 20m), a control unit (301), and a power supply unit (401). The power supply unit (401) is configured to provide driving voltages (VDD, VSS) for light-emitting diodes (1011, 1021) in all pixel circuits (101, . . . , 10n) in the LED display. The temperature sensors (201, . . . , 20m) are configured to collect a first temperature value of the LED display. The control unit (301) is coupled to the power supply unit (401), and is configured to control, based on the first temperature value, the power supply unit (401) to dynamically adjust the driving voltages (VDD, VSS) that are applied to the light-emitting diodes (1011, 1021) in all pixel circuits (101, . . . , 10n).

Abstract: The disclosure relates generally to a method, device, and system for creating a searchable data store with an infinite retention period for streaming documents. In an embodiment, a method of storing data includes receiving an incoming stream of time-series data; storing the time-series data of the incoming data stream in a first segment; and closing the first segment in response to a resource consumption limit of the first segment being reached.

Abstract: An embodiment is a method including receiving a plurality of event records in a first timeframe, each event record comprising a plurality of attribute-value pairs, grouping the event records by a destination address and a source address to form grouped event records, establishing a plurality of threat vectors for each of the grouped event records based on the attribute-value pairs, merging the plurality of threat vectors with the corresponding grouped event records to form a plurality of risk events, and storing the plurality of risk events in a computer-readable data store.