Abstract: Described is a method for power sharing of a display wall, in particular of a LED display wall having a plurality of display modules, and a plurality of N power supply units, each for driving a number of display modules, whereby during a failure of a first power supply unit of the plurality of N power supply units, the outputs of other power supply units are linked together such that the module or modules driven by the first and failed power supply continue(s) to operate, by redistribution of power from the other power supply units. Power sharing is also described in the context of a method for controlling the status of a display wall, in particular of a LED display wall, controlled by a central unit. The method includes collecting status and/or diagnostic information of the display wall inputted to the central unit; converting the status and/or diagnostic information to a picture; and displaying the picture on the display wall.

Abstract: Described is a method for power sharing of a display wall, in particular of a LED display wall having a plurality of display modules, and a plurality of N power supply units, each for driving a number of display modules, whereby during a failure of a first power supply unit of the plurality of N power supply units, the outputs of other power supply units are linked together such that the module or modules driven by the first and failed power supply continue(s) to operate, by redistribution of power from the other power supply units. Power sharing is also described in the context of a method for controlling the status of a display wall, in particular of a LED display wall, controlled by a central unit. The method includes collecting status and/or diagnostic information of the display wall inputted to the central unit; converting the status and/or diagnostic information to a picture; and displaying the picture on the display wall.

Abstract: A card reader for receiving or passing on information furnished by or for a card. The card reader is embodied such that it can be mounted on a printed circuit board by connecting devices for mechanically and electrically connecting the card reader to the printed circuit board. The card reader described is distinguished in that the connecting portion of the card reader intended for making a mechanical connection between the card reader and the printed circuit board are provided, locally separated from the contact elements of the card reader to be brought into electrical contact with the printed circuit board.

Abstract: A card reading device for receiving and/or passing on information provided by or for a card. The card reading device has a compartment that makes it possible for the card to be pushed into the card reading device. The card reading device described is distinguished by a resiliently held locking element which, in an initial position, protrudes into the compartment and is configured in such a way that the card can make contact with a first region or a second region of the locking element when it is pushed into the compartment. In particular, the entry of the card is dependent on its orientation when it is pushed into the card reading device. When the card runs onto the first region, the locking element can be pushed away by the card, allowing the entry of the card into the compartment. When the card runs onto the second region of the locking element, the latter keeps the compartment blocked and thereby prevents the continued entry of the card into the compartment.