Patent ID: 6563479
Filing Date: 2003-05-13
Classification: G09G

Abstract:
A display device having a resolution control system, comprising:a lighted display; and digital-to-analog converter (DAC) circuitry comprising at least a first DAC and a second DAC, the first DAC operatively connected to provide a first output voltage to the second DAC, where the first DAC divides a reference voltage into coarse voltages, where the first DAC selects one of the coarse voltages as the first output voltage in response to a first data input value, and the second DAC operatively connected to provide a second output voltage to the lighted display, the second output voltage responsive to the first output voltage where the second DAC divides the first output voltage into fine voltages, where the second DAC selects one of the fine voltages as the second output voltage in response to a second data input value.