Abstract: A combined direct current circuit breaker includes a transfer branch, an energy absorption branch, at least two primary branches and at least two secondary branches; the transfer branch is connected in parallel with the energy absorption branch; the primary branches are in one-to-one correspondence with the second branches; the primary branches are connected with direct current outgoing lines of a direct current busbar in a high-voltage direct current power transmission system; the secondary branches are connected in series with the transfer branches and then connected in parallel with two ends of the primary branches corresponding to the secondary branches.

Abstract: Embodiments disclose a radiator component and a heat dissipation system for a power semiconductor device. The radiator component for a power semiconductor device includes a heat dissipation body including an inner-ring substrate, an outer-ring substrate, and a plurality of heat sinks. In an embodiment, the outer-ring substrate surrounds the inner-ring substrate and the plurality of heat sinks are arranged between the inner-ring substrate and the outer-ring substrate. One or more first power semiconductor device arrangement positions are provided on an inner circumferential surface of the inner-ring substrate and one or more second power semiconductor device arrangement positions are arranged on an outer circumferential surface of the outer-ring substrate. The radiator component further includes a fan component. The embodiments can save on space, reduce costs, improve the heat dissipation efficiency, and avoid the problem of disturbances between a plurality of fans.

Abstract: Pharmaceutical and chemical intermediates and relevant chemicals, and relates to a novel preparation method of N-substituted dibenzo[a,c]carbazole compound. O-alkynylaniline and derivatives thereof as raw materials conduct a cascade cyclization reaction in an anhydrous organic solvent in the presence of catalysts, oxidants and additives, and are converted into the N-substituted dibenzo[a,c]carbazole compound. The preparation method of the N-substituted dibenzo[a,c]carbazole compound has fewer reaction steps, low cost of raw material, mild reaction conditions and convenient operation. Moreover, the obtained product has high yield and high purity, fully meets the quality requirements for drug intermediates, and provides favorable conditions for the industrial production.

Abstract: An electronic device may have a camera and a display. The display may be configured to display virtual reality content for a user in which no real-world content from the camera is displayed or mixed reality content in which a combination of real-world content from the camera and overlaid virtual reality content is displayed. Control circuitry in the device may adjust the display and camera while transitioning between virtual reality and mixed reality modes. The control circuitry may reconfigure the camera to exhibit a desired frame rate immediately upon transitioning from virtual reality mode to mixed reality mode. Transitions between modes may be accompanied by smooth transitions between frame rates to avoid visible artifacts on the display. The camera frame rate may be synchronized to the display frame rate for at least part of the transition between the virtual reality and mixed reality modes.

Abstract: Pharmaceutical and chemical intermediates and related chemistry providing a green preparation method for quinoline compounds. N-Substituted arylamine derivatives as raw material react with arylacetylene or arylethylene derivatives for 24 hours at 80° C.-160° C. in the presence of Brønsted acid catalyst and oxidant without solvent, to obtain quinoline compounds. Beneficial characteristics include convenient operation, mild reaction conditions, environmentally friendly property and possibility of realizing industrialization, and provides the quinoline compounds in high yields. The quinoline compounds synthesized by this method can be further functionalized into various compounds which have potential applications in development and research of natural products, functional materials and fine chemicals.

Abstract: An applicator for storing, sterilizing, and dispensing adhesives. The applicator includes a rigid tapered tip, a body, and a container holding a polymerizable cyanoacrylate monomer adhesive. The applicator is sterilized by radiation and, following sterilization, the adhesive remains substantially unpolymerized for about twenty-four months.

Abstract: An electronic device may have a display such as an organic light-emitting diode display. Electronic devices may also include a number of sensors such as accelerometers and gaze detection sensors. A graphics processing unit (GPU) may render digital pixel values for pixels in the device display. Frames (F2) with long rendering times may cause latency. To reduce latency, an image frame may be displayed for an extended period of time (68) to wait for the subsequent frame (F2) to finish rendering. Once the subsequent image frame (F2) has finished rendering, the subsequent image frame may be displayed without delay. To increase the lifespan of the display, variable persistence may be used. Sensor data and other factors may be used to dynamically determine persistence for minimal motion blur and maximum display lifespan. Sensor data may also be used to determine refresh rates for different portions of the display.

Abstract: A system and method for efficient optical signal amplification with system monitoring features are provided. For example, an optical repeater may include two different 4-port thin-film gain flattening filters (TF-GFFs), which may be connected to provide a high-loss loop-back (HLLB) path in the optical repeater for system monitoring. The 4-port TF-GFF may have four different ports and may integrate the functionalities of a conventional GFF and a coupler into a single component, thereby increasing power efficiency of the optical repeater.

Abstract: A mobile electronic device includes a display having an active array and a reference array. The active array includes a pixel and the reference array includes a reference pixel. The mobile electronic device also includes processing circuitry communicatively coupled to the display. The processing circuitry is configured to instruct the active array to drive the pixel based at least in part on a current-voltage relationship of the pixel and a reference current-voltage relationship of the reference pixel.

Abstract: An electronic device is provided. The electronic device includes a display that is configured to show content that includes a plurality of frames. The plurality of frames includes a first frame that is associated with a pre-transition value. The plurality of frames also includes a second frame that is associated with a current frame value that corresponds to a first luminance. Additionally, the electronic device is configured to determine an overdriven current frame value corresponding to a second luminance that is greater than the first luminance. The electronic device is also configured to display the second frame using the overdriven current frame value.

Abstract: The invention discloses a spot adjustment subassembly for projection lamp, comprising a light shielding plate located at an light exit end of the light source assembly to block light, and a positioning member for limiting a deflection of the light shielding plate, the positioning member is disposed on the light exit end surface of the light source assembly or on the light incident end surface of the lens imaging assembly, abuts the light shielding plate and applies pressure to the light shielding plate toward the direction of the light incident end surface of the lens imaging assembly or the light exit end surface of the light source assembly. The invention has the advantages of improving the adjustment range of light spot, changing imaging shape and clear imaging.

Abstract: An electronic device such as a head-mounted device may have displays that are viewable by the eyes of a viewer through adjustable lenses. The adjustable lenses may be liquid crystal lenses. A camera and other sensors in the head-mounted device may monitor the eyes of the user and gather other information. Control circuitry in the head-mounted device may control the adjustable lenses based on measured characteristics of the eyes of the user such as interpupillary distance and direction-of-view. The control circuitry may match the distance between the centers of the adjustable lenses to the measured interpupillary distance and may align the lens centers with the measured direction-of-view. The adjustable lenses may have transparent electrodes that are supplied with time-varying control signals by the control circuitry.

Abstract: The present invention provides a transparent window display apparatus, which includes a diffuser plate, in addition to a transparent display screen, a top plate, a back plate, a base and two side walls, the diffuser plate and the back plate form an angle and at least one light source is provided between the top plate and the diffuser plate. By adjusting the light source between the top plate and the diffuser plate, planar light is provided for both show of an exhibit and display of the transparent display screen simultaneously, dual purposes of window display and advertisement display can be achieved, and meanwhile, costs are saved and efficiency is improved.

Abstract: Techniques to provide contextual content are disclosed. In various embodiments, a set of topics inferred programmatically from a corpus of raw content data is obtained. An input is received. A topic with which the input is associated is determined, based at least in part on the input and the set of topics. A contextual content associated with the topic is provided.

Abstract: An electronic device is provided. The electronic device includes a display that is configured to show content that includes a plurality of frames. The plurality of frames includes a first frame that is associated with a pre-transition value. The plurality of frames also includes a second frame that is associated with a current frame value that corresponds to a first luminance. Additionally, the electronic device is configured to determine an overdriven current frame value corresponding to a second luminance that is greater than the first luminance. The electronic device is also configured to display the second frame using the overdriven current frame value.

Abstract: An electronic device includes a display having a reference array that includes a first pixel. The display also includes a first emission power supply coupled to the first pixel. The display further includes an active array having a second pixel. The display also includes a second emission power supply coupled to the second pixel.

Abstract: Techniques perform sample selection. Such techniques involve: in response to receiving a query time range for samples input by a user, obtaining a plurality of groups of samples from a sample set, each group of samples being collected within a corresponding time range. Such techniques further involve: determining a relationship between the query time range and time ranges corresponding to the plurality of groups of samples. Such techniques further involve: determining, based on the determined relation and from the plurality of groups of samples, a group of samples with a corresponding time range matching the query time range. Accordingly, these sets of samples may be presented accurately and efficiently to the user in a selective manner.

Abstract: The present invention discloses an optical film and a cover plate for an electronic device. The optical film comprises: a support; a micro/nano-structure layer which is formed by providing a groove on a surface of the support, which groove forms a micro/nano-structure and is provided with a filler; wherein the micro/nanostructure layer has a visual gradient in at least one direction. The present invention provides an optical film, which realizes a visual change or a gradient effect, by adjusting the area ratio of the micro/nano-structure, the depth of the groove, the period of the micro/nano-structure or the density of the micro/nano-structure, and produces a decorative or practical effect. It plays an aesthetic role when used in the casing of an electronic device, and it can shade light but not block the sight line when used in buildings or automotive glass. Furthermore, no black spots will appear with this structure, and it is visually more artistic.

Abstract: A mobile electronic device includes a display having an active array and a reference array. The active array includes a pixel and the reference array includes a reference pixel. The mobile electronic device also includes processing circuitry communicatively coupled to the display. The processing circuitry drives the pixel based at least in part on a degraded current-voltage relationship of the pixel, a reference current-voltage relationship of the reference pixel, and an aged current-voltage relationship.