Patent ID: 6803897
Filing Date: 2004-10-12
Classification: G09G

Abstract:
A display device for displaying information, comprising:a display unit for displaying the information, the display unit having R rows, and C columns; an image storage memory having image information to be displayed stored therein, the image storage memory configured to supply image information to each of the C columns, and wherein, at least during a partial display mode, image information is stored contiguously therein, regardless of whether there will be blank rows displayed between any of the rows of the image information; R driver circuits, each driver circuit coupled to a corresponding one of the R rows; a shift register having R shift register cells, each shift register cell of the shift register having an input terminal for receiving input data, and each shift register cell of the shift register having an output terminal coupled to a corresponding one of the R driver circuits; each shift register cell comprising: a mask register bit; a shift register bit; a logic circuit, the logic circuit coupled to receive a signal from an output terminal of the mask register bit, the logic circuit further coupled to provide a signal to the shift register bits; and a by-pass multiplexer, the by-pass multiplexer having a control input terminal coupled to the logic circuit the by-pass multiplexer having a first data input terminal coupled to an output terminal of the shift register bit, and further having a second data input terminal; wherein the mask register bit determines, at least in part, whether the corresponding driver circuit is enabled to drive the corresponding row to an active state.