Abstract: Apparatus (40) comprising a plurality of output buffers (41.1-41.N) for driving the columns of an LCD panel (46). A bias generator (42) is employed for providing a common biasing current (Ibias) to all output buffers (41.1-41.N). Means (43) provide information regarding the physical position of a dot to be driven on the LCD panel (46) by counting the number of incoming load signals (LD). A switchable current source (42) changes the level of the biasing current (Ibias) according to the physical position.

Abstract: The invention concerns a circuit arrangement (2) for driving a display arrangement (1). Further it concerns a display arrangement (1) and a method for driving a display arrangement (1). To provide an arrangement (2) having a good offset cancellation combined with high quality illustrating of an image the circuit arrangement includes column driving means (5) for driving n column electrodes (C) and row driving means (4) for driving m row electrodes (R) of the display arrangement (1), wherein the column driving means (5) comprises n output channels (O), each output channel (O) having a column electrode (C) assigned and is arranged for providing a respective column voltage to the assigned column electrode (C), an additional output channel (OR) is arranged for providing a respective column voltage, whereas each of the n column electrodes (C) is connectable to the additional output channel (OR). The additional output channel (OR) will be calibrated at first.

Abstract: Apparatus (50) for processing a differential input signal. The apparatus (50) comprises a minimum peak detector (51) with a differential input (28). The peak detector (51) provides a first voltage being proportional to an average voltage peak at the peak detector's differential input (28). A compressor (53) is provided for processing the first voltage in order to provide a second voltage. The compressor (53) is followed by a voltage controllable current source providing a trim current that is adjustable by the second voltage. A hysteresis equipped circuit (67.1) whose hysteresis characteristics are adjustable by the trim current is part of the apparatus (50).