| 摘要 |
Display with a heater, a) the display having at least one display glass, b) the heater having an electrically operated heating element connected to a voltage supply (UB, GND), c) the heating element comprising a thin layer, d) the layer being made of a material forming an electrical resistance, and e) the layer being applied over a surface area to the at least one display glass or being embedded over a surface area in the display. f) A first measuring instrument (4) is provided, which determines the resistance value of the heating element, g) a second measuring instrument (5) is provided, which determines the level of the voltage present at the heating element, h) a third measuring instrument (3) is provided, which senses the current ambient temperature at the display, i) a memory (7) is provided, which stores the determined resistance value of the heating element, j) a logic unit (6) is provided, which determines for the stored resistance value in accordance with the determined voltage and the determined ambient temperature a current-supplying period for the heating element necessary to produce that heat output which will heat up the display to a certain operating temperature within a predetermined time, and k) a switching element (8) actuated by the logic unit (6) is provided, which regulates the current flow through the heating element connected to the voltage supply (UB, GND) for the current-supplying period determined.
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