The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 02, 2008
Filed:
Mar. 24, 2004
Masanori Takeuchi, Kawasaki, JP;
Masaya Tajima, Kawasaki, JP;
Yutaka Chiaki, Kawasaki, JP;
Shunji Ohta, Kawasaki, JP;
Akira Yamamoto, Kawasaki, JP;
Masanori Takeuchi, Kawasaki, JP;
Masaya Tajima, Kawasaki, JP;
Yutaka Chiaki, Kawasaki, JP;
Shunji Ohta, Kawasaki, JP;
Akira Yamamoto, Kawasaki, JP;
Fujitsu Hitachi Plasma Display Limited, Kawasaki, JP;
Abstract
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.