Invention Grant
- Patent Title: Projection display apparatus having an optical element projecting modulated light, method for controlling the same, and electronic device
- Patent Title (中): 具有投影调制光的光学元件的投影显示装置及其控制方法以及电子设备
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Application No.: US12355010Application Date: 2009-01-16
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Publication No.: US09082359B2Publication Date: 2015-07-14
- Inventor: Takashi Toyooka
- Applicant: Takashi Toyooka
- Applicant Address: JP Tokyo
- Assignee: SEIKO EPSON CORPORATION
- Current Assignee: SEIKO EPSON CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: Oliff PLC
- Priority: JP2008-016607 20080128
- Main IPC: G09G3/36
- IPC: G09G3/36 ; G09G3/20 ; G09G3/34 ; G09G3/00
Abstract:
An image display apparatus includes a light-source driving circuit that drives a light source to cyclically change brightness. A control unit controls a pixel to turn on and off over a plurality of subfields in a field so that transmittance or reflectance in the pixel over the plurality of subfields in the field corresponds to a gray level specified for the pixel. The control unit also arranges the plurality of subfields such that two or more gray-level defining subfields maintain a predetermined relationship with respect to the cyclical change in brightness of the light source caused by drive of a light-source driving circuit.
Public/Granted literature
- US20090189922A1 IMAGE DISPLAY APPARATUS, METHOD FOR CONTROLLING THE SAME, AND ELECTRONIC DEVICE Public/Granted day:2009-07-30
Information query
IPC分类:
