Invention Grant
- Patent Title: Video display system and video display method
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Application No.: US16331456Application Date: 2018-02-26
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Publication No.: US11032448B2Publication Date: 2021-06-08
- 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/JP2018/006856 WO 20180226
- International Announcement: WO2018/235337 WO 20181227
- Main IPC: H04N5/445
- IPC: H04N5/445 ; H04N5/20 ; H04N21/431 ; H04N21/4402 ; H04N9/82 ; H04N5/66 ; H04N21/47 ; G06T5/00 ; G06T5/20 ; H04N9/793

Abstract:
A video display system includes: a tone mapping processor that performs a tone mapping process of converting a luminance of a video by using conversion characteristics according to a maximum luminance of the video; and a display that displays the video that has undergone the tone mapping process. The tone mapping processor switches between a first tone mapping process of dynamically changing the conversion characteristics according to a time-dependent change in the maximum luminance of the video and a second tone mapping process that is performed using constant conversion characteristics irrespective of the time-dependent change in the maximum luminance of the video.
Public/Granted literature
- US20190222721A1 VIDEO DISPLAY SYSTEM AND VIDEO DISPLAY METHOD Public/Granted day:2019-07-18
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