公开(公告)号：US20170251167A1

公开(公告)日：2017-08-31

申请号：US15595012

申请日：2017-05-15

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Tadamasa TOMA ,  Kengo TERADA ,  Masayuki KOZUKA ,  Takahiro NISHI

IPC: H04N7/01 ,  H04N21/462 ,  G06F3/14 ,  H04N7/015 ,  H04N9/64

CPC classification number: H04N7/0125 ,  G06F3/14 ,  G06T5/009 ,  G09G5/026 ,  G09G5/10 ,  G09G2320/0276 ,  G09G2370/04 ,  H04N5/20 ,  H04N5/2351 ,  H04N5/243 ,  H04N7/01 ,  H04N7/015 ,  H04N9/64 ,  H04N9/642 ,  H04N11/20 ,  H04N21/4621

Abstract: A conversion method for converting luminance of a video, including a luminance value in a first luminance range, to be displayed on a display apparatus includes: acquiring a first luminance signal indicating a code value obtained by quantization of the luminance value of the video; and converting the code value indicated by the acquired first luminance signal into a second luminance value determined based on a luminance range of the display apparatus, the second luminance value being compatible with a second luminance range with a maximum value smaller than a maximum value of the first luminance range and larger than 100 nit. This provides the conversion method capable of achieving further improvement.