Invention Grant
- Patent Title: Video display system and video display method
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Application No.: US16333894Application Date: 2018-02-26
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Publication No.: US11146737B2Publication Date: 2021-10-12
- Inventor: Masaya Yamamoto , Masayuki Kozuka , Yoshiichiro Kashiwagi , Toshiroh Nishio , Kazuhiko Kouno , Hiroshi Yahata , Takeshi Hirota , Yoshihiro Mori
- Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
- Applicant Address: JP Osaka
- Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
- Current Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
- Current Assignee Address: JP Osaka
- Agency: McDermott Will and Emery LLP
- International Application: PCT/JP2018/006862 WO 20180226
- International Announcement: WO2019/069482 WO 20190411
- Main IPC: H04N5/235
- IPC: H04N5/235 ; H04N5/20 ; H04N21/431 ; H04N21/435

Abstract:
A video display system includes: a tone mapping processor; a display; and a metadata processor that generates first dynamic metadata that indicates a maximum luminance that is constant over a plurality of time intervals by using static metadata. The video display system switches between: a first operation of (i) generating the first dynamic metadata by using the static metadata, performed by the metadata processor and (ii) performing the tone mapping process by using the first dynamic metadata, performed by the tone mapping processor; and a second operation of performing the tone mapping process by using second dynamic metadata in which the maximum luminance varies over the plurality of time intervals, performed by the tone mapping processor.
Public/Granted literature
- US20210006689A1 VIDEO DISPLAY SYSTEM AND VIDEO DISPLAY METHOD Public/Granted day:2021-01-07
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