- Patent Title: Projector, stack display system, image display method, and program
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Application No.: US17260152Application Date: 2018-07-19
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Publication No.: US11297292B2Publication Date: 2022-04-05
- Inventor: Hisakazu Aoyanagi
- Applicant: Sharp NEC Display Solutions, Ltd.
- Applicant Address: JP Tokyo
- Assignee: Sharp NEC Display Solutions, Ltd.
- Current Assignee: Sharp NEC Display Solutions, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: McGinn I.P. Law Group, PLLC.
- International Application: PCT/JP2018/027139 WO 20180719
- International Announcement: WO2020/016999 WO 20200123
- Main IPC: H04N9/31
- IPC: H04N9/31

Abstract:
A projector includes a light source; a spatial light modulator; a signal processing unit that includes a tone map unit that performs a luminance gradation conversion of an input video data according to a tone map indicating a relationship of an output luminance with respect to an input luminance; a luminance acquiring unit that obtains a maximum luminance of a projection surface of the modulated light; and a control unit that controls an amount of light of the light source and sets the tone map. When the maximum luminance of the projection surface is equal to or greater than a first threshold value indicating a maximum luminance of the input video data, the control unit sets, to the tone map unit, a tone map in which a maximum value of the output luminance is set to be the first threshold value.
Public/Granted literature
- US20210321067A1 PROJECTOR, STACK DISPLAY SYSTEM, IMAGE DISPLAY METHOD, AND PROGRAM Public/Granted day:2021-10-14
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