Abstract: An information management method, a device, a system and a medium. The information management method applied to a first terminal, including: sending an information acquisition request to a server, so that the server responds to the information acquisition request and sends visitor information to the first terminal; receiving the visitor information sent by the server; generating card information according to the visitor information; and sending the card information to an electronic card, so that the electronic card displays the card information.

Abstract: A method and apparatus used for extracting a feature point of an environmental target, which relate to the field of vehicles. The method comprises: acquiring the position of each corner point of an environmental target; and determining a feature point of the environmental target according to the position of each corner point of the environmental target. Thus, the problem wherein target identification is not precise may be solved, which is particularly suitable for the identification of a large target.

Abstract: Disclosed are an electronic signboard and a wall hanging device. The electronic signboard includes a display device and a wall hanging device. The display device is provided with a first fitting portion, and the wall hanging device is provided with a second fitting portion detachably connected to the first fitting portion. The wall hanging device is further provided a fixing surface via which the wall hanging device is fixed to a mounting base.

Abstract: Disclosed are an electronic signboard and a wall hanging device. The electronic signboard includes a display device and a wall hanging device. The display device is provided with a first fitting portion, and the wall hanging device is provided with a second fitting portion detachably connected to the first fitting portion. The wall hanging device is further provided a fixing surface via which the wall hanging device is fixed to a mounting base.

Abstract: A method of driving an electronic paper display apparatus includes: providing a preprocessing signal in the first pulse signal to the first electrode in the display stage of the first image display stage, so that the first particles and the third particles are mixed, and the first particles and the third particles are closer to a display side of the display apparatus than the second particles; and providing a first sub-pulse signal in the first pulse signal to the first electrode in the display stage of the first image display stage after providing the preprocessing signal, so that the third particles are closer to the display side of the display apparatus than the first particles and the second particles and the microcup displays the third color.

Abstract: Disclosed are an array substrate, a method for driving the same, a display module, and a display device. The array substrate includes a plurality of data lines, a plurality of gate lines, a plurality of switch signal lines, and a plurality of pixels, wherein each of the pixels includes a switch circuit, a drive circuit, and a light-emitting element. Each of the switch signal lines may be connected to the switch circuits of the plurality of pixels disposed in at least one region, and each of the gate lines is connected to a plurality of rows of pixels disposed in different regions. Reliable scanning of the pixels row by row may be ensured by flexible control of signals provided by the signal lines. The array substrate needs to be disposed with fewer gate lines, such that the cost is reduced.

Abstract: Disclosed are an array substrate and a method for driving the same, a display module, and a display device. The array substrate includes a plurality of data lines, a plurality of first gate lines, a plurality of second gate lines, a plurality of pixels and a plurality of switch circuit. Each of the first gate lines is connected to the plurality of switch circuit disposed in at least one region, and each of the switch circuit is connected to a row of pixels in the region where the switch circuit is disposed, and each of the second gate lines is connected to a plurality of rows of pixels disposed in different regions.

Abstract: A method of driving an electronic paper display apparatus includes: providing a preprocessing signal in the first pulse signal to the first electrode in the display stage of the first image display stage, so that the first particles and the third particles are mixed, and the first particles and the third particles are closer to a display side of the display apparatus than the second particles; and providing a first sub-pulse signal in the first pulse signal to the first electrode in the display stage of the first image display stage after providing the preprocessing signal, so that the third particles are closer to the display side of the display apparatus than the first particles and the second particles and the microcup displays the third color.