Invention Grant
US07916158B2 Image display apparatus, image signal processing circuit used therein, and method of controlling color saturation of image signal
有权
图像显示装置，其中使用的图像信号处理电路，以及控制图像信号的色彩饱和度的方法
- Patent Title: Image display apparatus, image signal processing circuit used therein, and method of controlling color saturation of image signal
- Patent Title (中): 图像显示装置，其中使用的图像信号处理电路，以及控制图像信号的色彩饱和度的方法
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Application No.: US11412989Application Date: 2006-04-28
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Publication No.: US07916158B2Publication Date: 2011-03-29
- Inventor: Hiroshi Aoki , Ryo Hasegawa , Naoya Oka , Rikiya Asaoka , Daisuke Honda
- Applicant: Hiroshi Aoki , Ryo Hasegawa , Naoya Oka , Rikiya Asaoka , Daisuke Honda
- Applicant Address: JP Tokyo
- Assignee: Hitachi, Ltd.
- Current Assignee: Hitachi, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Antonelli, Terry, Stout & Kraus, LLP.
- Priority: JP2005-130980 20050428
- Main IPC: G09G5/10
- IPC: G09G5/10 ; G06K9/00 ; H04N5/14
Abstract:
Disclosed is an image display technique for displaying a high-quality image by an image signal of appropriate color saturation. To this end, in the invention, color histogram information is detected from a color difference signal and average brightness information or brightness histogram information from a brightness signal. Based on the detected color histogram information and average brightness information or brightness histogram information, the demodulation axis of a color difference signal is adjusted, thereby controlling the color saturation (chroma) of an image. This enables display of an image having color intensity suited to the brightness and chroma of an image signal.
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