Patent ID: 7196701

Claim:
A driving apparatus for a display device, comprising: a driving circuit for generating a signal to allow a display section to display, said driving circuit having a digital signal processing circuit for processing a digital signal, a digital-to-analog converter circuit for converting a digital display signal to an analog display signal, and an analog signal processing circuit for processing an analog display signal; and a power supply circuit for generating a supply voltage for said driving circuit; wherein said power supply circuit reduces the supply voltage supplied to said digital-to-analog converter circuit and to said analog signal processing circuit, from the supply voltage during the normal operation to a voltage which still allows said digital-to-analog converter circuit and said analog signal processing circuit to operate, when a predetermined power save is instructed; wherein a period in which said predetermined power save is instructed and said supply voltage is reduced includes a period in which display data is written to said display section and a display is realized; and wherein during a period in which said predetermined power save is instructed and said supply voltage is reduced, said digital-to-analog converter circuit outputs an analog display signal corresponding to a digital display signal.