Invention Grant
- Patent Title: Abnormality detection unit, projector, abnormality detection method, and recording medium
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Application No.: US16224355Application Date: 2018-12-18
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Publication No.: US10897604B2Publication Date: 2021-01-19
- Inventor: Koichi Kato , Tomoya Makino , Akira Inoue
- Applicant: CASIO COMPUTER CO., LTD.
- Applicant Address: JP Tokyo
- Assignee: CASIO COMPUTER CO., LTD.
- Current Assignee: CASIO COMPUTER CO., LTD.
- Current Assignee Address: JP Tokyo
- Agency: Fitch, Even, Tabin & Flannery LLP
- Priority: JP2018-000928 20180109
- Main IPC: H04N9/31
- IPC: H04N9/31

Abstract:
An abnormality detection unit includes a light source device configured to emit light for each of segment periods that are time divided in a frame and an illuminance value obtaining unit configured to obtain an illuminance value of light emitted from the light source device and determines that the light source device is abnormal when all illuminance values obtained at the segment periods are less than a threshold.
Public/Granted literature
- US20190215501A1 ABNORMALITY DETECTION UNIT, PROJECTOR, ABNORMALITY DETECTION METHOD, AND RECORDING MEDIUM Public/Granted day:2019-07-11
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