公开(公告)号：US20180213265A1

公开(公告)日：2018-07-26

申请号：US15933799

申请日：2018-03-23

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Tadamasa TOMA ,  Takahiro NISHI ,  Noritaka IGUCHI

IPC: H04N21/2343 ,  G06T5/00 ,  H04N19/30

CPC classification number: H04N21/2343 ,  G06T5/007 ,  G06T2207/20208 ,  H04N19/30 ,  H04N19/89 ,  H04N21/23418 ,  H04N21/23614 ,  H04N21/4348 ,  H04N21/4402 ,  H04N21/4854

Abstract: A video transmission method according to the present disclosure includes: generating a transmission signal including, in a time series, first video data having a first luminance dynamic range and second video data having a second luminance dynamic range wider than the first luminance dynamic range; and transmitting the transmission signal generated. In the generating of the transmission signal, a signal level corresponding to a luminance value is limited to a value lower than a limit value that is predetermined, in a transition period provided for switching from one of the first video data and the second video data to the other.

公开(公告)号：US20180199412A1

公开(公告)日：2018-07-12

申请号：US15885535

申请日：2018-01-31

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Virginie DRUGEON ,  Takahiro NISHI ,  Tadamasa TOMA

IPC: H05B37/02 ,  H02M1/084 ,  H02M1/14 ,  H05B33/08

CPC classification number: H05B37/0209 ,  H02M1/084 ,  H02M1/14 ,  H02M2001/0009 ,  H04N7/0117 ,  H04N19/70 ,  H04N19/85 ,  H04N19/98 ,  H04N21/2343 ,  H04N21/236 ,  H04N21/23614 ,  H04N21/4345 ,  H04N21/4402 ,  H05B33/0815

Abstract: A data generation method is for generating video data that covers a second luminance dynamic range wider than a first luminance dynamic range and has reproduction compatibility with a first device that does not support reproduction of video having the second luminance dynamic range and supports reproduction of video having the first luminance dynamic range, and includes: generating a video signal to be included in the video data using a second OETF; storing, into VUI in the video data, first transfer function information for identifying a first OETF to be referred to by the first device when the first device decodes the video data; and storing, into SEI in the video data, second transfer function information for identifying a second OETF to be referred to by a second device supporting reproduction of video having the second luminance dynamic range when the second device decodes the video data.

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.