Abstract: An automated checkout system uses a shopping cart that is automatically charged when stacked into another shopping cart. Each shopping cart has a front charging connector and a rear charging connector. When a first shopping cart is stacked into a second shopping cart, the front charging connector of the first shopping cart connects with the rear charging connector of the second shopping cart. Electrical power can flow to the first shopping cart via the second shopping cart to charge a battery of the first shopping cart. The second shopping cart may be similarly stacked into a third shopping cart, wherein the second shopping cart receives electrical power from the third shopping cart. The second shopping cart may use this electrical power to charge its own battery or may provide some or all of the electrical power to the first shopping cart to charge the first shopping cart's battery.

Abstract: A display device and a driving method thereof, a display system and a display method thereof are provided, including a display panel, which includes a plurality of pixel units; a first optical film sheet provided on the plurality of pixel units. At least one of the pixel units includes a sub-pixel unit of a first color, and the sub-pixel unit of the first color includes at least a display sub-pixel unit of the first color and a disturbing sub-pixel unit of the first color. The first optical film sheet includes a first sub-optical-film unit to allow transmission of light emitted by the display sub-pixel-unit of the first color and a second sub-optical-film unit to allow transmission of light emitted by the disturbing sub-pixel unit of the first color, and polarization states of lights emitted from the first sub-optical film unit and the second sub-optical film unit differ from each other.

Abstract: A display device and a driving method thereof, a display system and a display method thereof are provided, including a display panel, which includes a plurality of pixel units; a first optical film sheet provided on the plurality of pixel units. At least one of the pixel units includes a sub-pixel unit of a first color, and the sub-pixel unit of the first color includes at least a display sub-pixel unit of the first color and a disturbing sub-pixel unit of the first color. The first optical film sheet includes a first sub-optical-film unit to allow transmission of light emitted by the display sub-pixel-unit of the first color and a second sub-optical-film unit to allow transmission of light emitted by the disturbing sub-pixel unit of the first color, and polarization states of lights emitted from the first sub-optical film unit and the second sub-optical film unit differ from each other.

Abstract: Methods and apparatus for using a communication protocol based on a wireless network are described herein. Some methods include detecting a wireless connection between a first electronic device and a second electronic device, determining if the second electronic device is connected to a cellular network, such that the first electronic device connects to the cellular network via the second electronic device, and responsive to determining that the second electronic device is connected to the cellular network, adjusting a communication protocol of the wireless connection between the first electronic device and the second electronic device. Apparatus and computer program products for performing the above methods are also described herein.

Abstract: A mask plate is provided. The mask plate includes a first transparent substrate. A first transparent electrode, an electrochromic layer and a second transparent electrode are arranged sequentially on the first transparent substrate. The first transparent electrode is configured to be selectively powered so as to form energized regions with different shapes. A method for manufacturing the mask plate, a device including the mask plate, and a method for using the mask plate are further provided.

Abstract: A mask plate is provided. The mask plate includes a first transparent substrate. A first transparent electrode, an electrochromic layer and a second transparent electrode are arranged sequentially on the first transparent substrate. The first transparent electrode is configured to be selectively powered so as to form energized regions with different shapes. A method for manufacturing the mask plate, a device including the mask plate, and a method for using the mask plate are further provided.

Abstract: An information processing method and an electronic device are provided. The method includes: detecting a first operation of a first application, where the first operation is for displaying a first interface corresponding to the first application on a display of the electronic device; determining whether the first application is identical to one of M applications to obtain a first determination result where M is a positive integer, where each of the M applications has at least one corresponding interface currently displayed on the display of the electronic device; and generating and outputting a prompt message if the first determination result indicates that the first application is not identical to any one of the M applications.

Abstract: Methods and apparatus for using a communication protocol based on a wireless network are described herein. Some methods include detecting a wireless connection between a first electronic device and a second electronic device, determining if the second electronic device is connected to a cellular network, such that the first electronic device connects to the cellular network via the second electronic device, and responsive to determining that the second electronic device is connected to the cellular network, adjusting a communication protocol of the wireless connection between the first electronic device and the second electronic device. Apparatus and computer program products for performing the above methods are also described herein.

Abstract: An information processing method and an electronic device are provided. The method includes: detecting a first operation of a first application, where the first operation is for displaying a first interface corresponding to the first application on a display of the electronic device; determining whether the first application is identical to one of M applications to obtain a first determination result where M is a positive integer, where each of the M applications has at least one corresponding interface currently displayed on the display of the electronic device; and generating and outputting a prompt message if the first determination result indicates that the first application is not identical to any one of the M applications.