Invention Grant
- Patent Title: Apparatus and method for image processing in spatial light modulated display systems
- Patent Title (中): 空间光调制显示系统中的图像处理装置和方法
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Application No.: US11921705Application Date: 2005-06-08
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Publication No.: US08189111B2Publication Date: 2012-05-29
- Inventor: Mark Francis Rumreich , Joel Emerson Stubbs
- Applicant: Mark Francis Rumreich , Joel Emerson Stubbs
- Applicant Address: FR Boulogne-Billancourt
- Assignee: Thomson Licensing
- Current Assignee: Thomson Licensing
- Current Assignee Address: FR Boulogne-Billancourt
- Agent Robert D. Shedd; Harvey D. Fried; Richard LaPeruta
- International Application: PCT/US2005/020231 WO 20050608
- International Announcement: WO2006/135359 WO 20061221
- Main IPC: H04N5/44
- IPC: H04N5/44

Abstract:
Embodiments of the invention provide a circuit for peaking video signals to be provided to a dynamic range limiter for displaying images on a display device. The circuit comprises a peaking filter including a filter input configured to receive a video signal. A first filter output provides a peaking signal for the video signal. A second filter output provides a peaked video signal based upon the peaking signal. The circuit further comprises a throttle circuit including a throttle input coupled to the second filter output. A throttle output provides a throttle signal based upon the peaked video signal. A scaler is coupled between the first filter output and the dynamic range limiter. The scaler is further coupled to the throttle output. The scaler adjusts the peaking signal based upon the throttle signal. Accordingly, peaking is adaptively applied to the video signal based upon the dynamic range limits of the dynamic range limiter, as well as variations in brightness of the input signal over portions of the displayed image.
Public/Granted literature
- US20090316048A1 Apparatus and method for image processing in spatial light modulated display systems Public/Granted day:2009-12-24
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