Patent ID: 8421784

Claim:
A display configured to receive display data from a host as an input m-bit digital code, where m is an integer greater than one, the display comprising: a display driver configured to convert the input m-bit digital code, the display driver including a digital/analogue converter, the digital/analogue converter including, a switched capacitor digital/analogue converter including, at least one capacitor, each capacitor having a first plate and a second plate, an output, and an n-bit digital input, where n is an integer greater than one, the n-bit digital input derived from the m-bit digital code and each bit of the n-bit digital input selecting an input from at least two inputs to input to a corresponding one of the second plates; and a switching arrangement configured to, in a zeroing phase of operation, connect one of a plurality of reference voltages to the first plate of the at least one capacitor of the switched capacitor digital/analogue converter, an input to the switching arrangement indicating which one of the plurality of reference voltages to connect to the first plate, the input to the switching arrangement being a signal internal to the display and being independent of the input m-bit digital code.