Staas & Halsey LLP
Display apparatus and display driving method for effectively eliminating the occurrence of a moving image false contour
A display apparatus displaying gray scale by using a subfield method has a gain control circuit, a sub gain control circuit, and an error diffusion circuit. The gain control circuit has the number of gray scale levels of an input signal and outputting a first intermediate image signal with a first number of gray scale levels, and the sub gain control circuit receives the first intermediate image signal, compresses the number of gray scale levels of the first intermediate image signal, and outputs a second intermediate image signal with a second number of gray scale levels. The error diffusion circuit receives the second intermediate image signal and increase the number of gray scale levels by simulating additional gray scale levels through error diffusion.
Fujitsu Hitachi Plasma Display Limited
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Shunji Yutaka Akira Masanori Masaya
Ohta Chiaki Yamamoto Takeuchi Tajima