Patent Number: 7,102,694

Title: Apparatus and method for eliminating afterimage state

Abstract: An apparatus and method for eliminating an afterimage state occurring on a liquid crystal display (LCD) panel. The apparatus includes a memory for storing an input video signal, a data comparator for comparing data read from or written into the memory, a controller for outputting a previously stored RGB (red, green, and blue) signal for on screen display (OSD) if it is determined according to the comparison result of the data comparator that the data read from or written into the memory are maintained in the same state for a predetermined time, a signal processing unit for converting the input video signal into a desired format by writing the input video signal into the memory and reading the input video signal from the memory and for outputting a converted video signal, and displaying a moving picture, instead of the converted video signal, on an LCD if the RGB signal for OSD is output from the controller.

Inventors: Jang; Geun-Sik (Suwon-si, KR)

Assignee: Samsung Electronics Co., Ltd.

International Classification: H04N 5/68 (20060101)

Expiration Date: 9/05/02018