The present disclosure provides a method for updating a content of an electronic label and a device, and the method includes: obtaining first object information of a first target object, where a distance difference between the first target object and a first coordinate position where a first electronic label is located is within a preset distance range; sending the first object information of the first target object to the first electronic label, and controlling the first electronic label to display the first object information of the first target object.

There is provided an image representation method, including: converting a to-be-converted image from a first color space to a second color space; acquiring a target conversion color ratio corresponding to each pixel of the to-be-converted image and including ratios of plural target conversion colors, according to a color ratio allocation table based on the second color space; creating an array corresponding to the pixel according to the target conversion color ratio; calculating an index value corresponding to the pixel according to a position of the pixel in the to-be-converted image, and inputting the index value to the array as a subscript of the array, to acquire an element of the array as a target value corresponding to the pixel; and determining a target conversion color of the pixel according to the target value, to acquire a converted image including the plural target conversion colors.

An electronic tag system and a method of updating electronic tag information are provided. The electronic tag system includes: a communication device, configured to receive updated annual inspection information; a display device, configured to display the updated annual inspection information; and a power control device, connected to the communication device and the display device respectively and configured to: connect, when the communication device receives the updated annual inspection information, a power source to the display device electrically to power the display device, so as to perform updating of annual inspection information on the display device; and disconnect the power source from the display device when the updating is over.

A bodywork panel for a vehicle such as a racing car or a racing motorcycle is fitted with one or more optically clear panels, which are profiled to follow the aerodynamic form of the bodywork panel. A flexible reflective display screen, for examples based on e-paper, is mounted to an inner face of each optically clear panel such that an image on the display screen is visible outside the vehicle through the optically clear panel. A paint finish on the bodywork panel continues over a peripheral region of each optically clear panel, concealing a join between it and the bodywork panel. Images displayed on the display screens via a display controller can thus appear like painted graphics on the bodywork panel, except that they may be changed as desired. Thus, graphics on the vehicle, such as advertising and sponsorship logos, can be changed at will during a race. Leathers worn by racing motor cyclists can be fitted with similar display screens mounted behind optically clear flexible plastic panels sewn to the leathers.

An electronic label with a housing, that comprises a front wall and a rear wall and a side wall, wherein the front wall comprises a, particularly reflective, screen, and wherein by contrast to the front wall and rear wall, the side wall is constructed to be light-conducting and wherein a light source for emitting the light that can be generated using it through the side wall is positioned inside the housing, and wherein the side wall is inclined towards the front wall.

The present invention discloses a greeting card having at least two surfaces and at least three edges, the greeting card comprising an intrinsically valuable base material comprising titanium or a titanium alloy and one or more gemstones embedded on one or more of the surfaces or edges; wherein the greeting card has a thickness of between about 1.0 mm and about 1.5 mm, a first dimension between about 70 mm and about 90 mm, and a second dimension between about 50 mm and about 60 mm; and further wherein the greeting card depicts one or more of a letter, number, symbol, artistic design, image, or message.

A display device includes a housing with a grid assembly received therein. A plurality of light assemblies is coupled to the grid assembly, for example in a grid pattern to create a dynamic display area. Each of light assemblies has an actuator assembly, with each one of the actuator assemblies being individually controllable to move the corresponding light assembly between a retracted state and a plurality of extended states. A controller is coupled to each of the plurality of light assemblies and programmed to control the actuator assemblies to move the light assemblies between the retracted state and the plurality of extended states.

A three-dimensional (3D) display system may include a peg array of multiple pegs. Each peg may be individually addressable and designed to move along one or more axes. The 3D display system may also include an induction array having multiple electromagnetic coils to generate electromagnetic fields. The electromagnetic fields may induce magnetic forces upon at least one peg to cause the peg to move along an axis into an actuated position. The 3D display may also include a display screen to be distended into a 3D topography via contact with at least one peg in the actuated position.

A display (100) primarily intended for use on an external surface of a building comprises a weatherproof housing (310, 340); a bistable electro-optic medium (326) enclosed within and visible through the housing; an electrode (324, 330) enclosed within the weatherproof housing and arranged to drive the electro-optic medium; a power source (504) enclosed within the weatherproof housing; data receiving means (508) enclosed within the weatherproof housing and arranged to receive data wirelessly from a source outside the weatherproof housing; and display drive means (510) arranged to receive data from the data receiving means and power from the power source, and to control the potential of the electrode.

Provided are a display substrate, a preparation method and a driving method thereof, and a display apparatus. The display substrate includes a circuit substrate, a plurality of elastic electrode pillars disposed on the circuit substrate, and a plurality of second addressing electrodes and a plurality of light-emitting elements disposed on the elastic electrode pillars, the circuit substrate includes an addressing circuit and a plurality of first addressing electrodes, wherein the addressing circuit is configured to provide a first electrostatic voltage to the first addressing electrodes and a second electrostatic voltage to the second addressing electrodes; the first electrostatic voltage and the second electrostatic voltage are configured to control the deflection angle of the elastic electrode pillar.