Abstract: The present invention provides an apparatus and a method for adaptively adjusting display parameters. With the apparatus and the method, an adaptive adjustment can be performed on the display parameters from the host for displaying image signals automatically according to the display attributes information of the display, so as to present the image on the display clearly.

Abstract: The present invention discloses a device for overlapping multi-channel digital display signals, the device comprises: a first display signal inputting channel; a second display signal inputting channel; a coordinate generating unit for generating coordinates of a second display window; a detection unit for receiving coordinates of pixel currently being scanned and the coordinates of the second display window, comparing therebetween, and outputting a valid level when the coordinates of the pixel currently being scanned fall within the scope of the coordinates of the second display window and the second display signal inputting channel has the second display data input therein; and a multiplexer having a control end, signal input ends and a signal output end turning on the second display signal inputting channel and outputting the second display data or turning on the first display signal inputting channel and outputting the first display data to a display terminal.