Patent ID: 8154496
Filing Date: 2012-04-10
Classification: G09G

Abstract:
1. An LCD drive circuit comprising: a serial data receiving circuit configured to receive serial data that includes display data and first identification data to identify whether the display data corresponds to a 1/n duty driving state or a 1/m duty driving state; an LCD drive signal generation circuit configured to generate a segment signal and a common signal to turn on or off an LCD segment based on the serial data received by the serial data receiving circuit, the LCD drive signal generation circuit being switchable between the 1/n duty driving state and the 1/m duty driving state; and a driving state setting circuit that sets the LCD drive signal generation circuit to the 1/n duty driving state based on the first identification data when the serial data receiving circuit receives the serial data corresponding to the 1/n duty driving state, thereafter forbids the serial data corresponding to the 1/m duty driving state from being taken into the LCD drive signal generation circuit based on the first identification data and forbids the LCD drive signal generation circuit from converting to the 1/m duty driving state; wherein n and m are natural numbers larger than one and different from each other.