Patent ID: 7256755

Claim:
A display apparatus which expresses luminance by varying light emission time length and displays a gray scale by using a subfield method, comprising: a main path generating a first image signal having a smaller number of gray scale levels than an input image signal; a sub path generating a second image signal having a smaller number of gray scale levels than said first image signal; a switch circuit outputting said first image signal generated by said main path or said second image signal generated by said sub path by switching therebetween; a motion region detection circuit detecting a motion region from said input image signal or a signal obtained by processing said input image signal; a first judging circuit outputting a first motion signal in accordance with an output of said motion region detection circuit; a level detection circuit outputting a level signal by detecting a pixel of a particular gray scale level from said main path; a motion detection correction circuit receiving said first motion signal and said level signal, and outputting a second motion signal in accordance with said level signal; and a second judging circuit receiving said second motion signal and said level signal, and outputting a switching control signal to said switch circuit.