公开(公告)号：US20220115044A1

公开(公告)日：2022-04-14

申请号：US17556227

申请日：2021-12-20

Applicant: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA

Inventor： Hiroshi YAHATA ,  Tadamasa TOMA ,  Tomoki OGAWA

IPC: G11B27/28 ,  G11B20/10 ,  H04N5/84 ,  H04N9/804 ,  H04N9/82 ,  G11B27/10 ,  G11B27/32 ,  H04N5/85 ,  H04N7/015

Abstract: A decoding system decodes a video stream, which is encoded video information. The decoding system includes a decoder that acquires the video steam and generates decoded video information, a maximum luminance information acquirer that acquires maximum luminance information indicating the maximum luminance of the video stream from the video stream, and an outputter that outputs the decoded video information along with the maximum luminance information. In in a case where the video stream includes a base video stream and an enhanced video stream, the decoder generates base video information by decoding the base video stream, an enhanced video information by decoding the enhanced video stream, and generates the decoded video information based on the base video information and the enhanced video information, and the outputter outputs the decoded video information, along with the maximum luminance information.

公开(公告)号：US20220115045A1

公开(公告)日：2022-04-14

申请号：US17556241

申请日：2021-12-20

Applicant: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA

Inventor： Hiroshi YAHATA ,  Tadamasa TOMA ,  Tomoki OGAWA

IPC: G11B27/28 ,  G11B20/10 ,  H04N5/84 ,  H04N9/804 ,  H04N9/82 ,  G11B27/10 ,  G11B27/32 ,  H04N5/85 ,  H04N7/015

Abstract: A decoding method of a video stream, which is encoded video information. The video stream includes a base video stream, and an enhanced video stream, which is a video stream to enhance luminance of the base video stream, and a describer that contains the combination information of the base video stream and the enhanced video stream. The decoding method includes acquiring the describer, and identifying the combination of the base video steam and the enhanced video stream. The decoding method also includes generating base video information by decoding the base video stream, generating enhanced video information by decoding the enhanced video stream, generating decoded video information based on the base video stream and the enhanced video stream, and outputting the decoded video information.

公开(公告)号：US20190156864A1

公开(公告)日：2019-05-23

申请号：US16251688

申请日：2019-01-18

Applicant: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA

Inventor： Hiroshi YAHATA ,  Tadamasa TOMA ,  Tomoki OGAWA

IPC: G11B27/28 ,  H04N9/82 ,  H04N9/804 ,  H04N5/84 ,  G11B27/32 ,  G11B27/10 ,  H04N5/85 ,  G11B20/10 ,  H04N7/015

Abstract: A non-transitory recording medium is provided that is reproduced by a playback device having an attribute reader, a decoder, and an outputter. The recording medium has recorded therein a video stream that is encoded video information, and a management information file correlated with the video stream. The management information file includes first attribute information, indicating whether a dynamic range of luminance of the video stream is a first dynamic range or a second dynamic range that is wider than the first dynamic range. In a case where the first attribute information indicates the second dynamic range, the first attribute information also indicates a type of the second dynamic range.

公开(公告)号：US20210012811A1

公开(公告)日：2021-01-14

申请号：US17038708

申请日：2020-09-30

Applicant: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA

Inventor： Hiroshi YAHATA ,  Tadamasa TOMA ,  Tomoki OGAWA

IPC: G11B27/28 ,  G11B20/10 ,  H04N5/84 ,  H04N9/804 ,  H04N9/82 ,  G11B27/10 ,  G11B27/32 ,  H04N5/85 ,  H04N7/015

Abstract: A decoding system decodes a video stream, which is encoded video information. The decoding system includes a decoder that acquires the video steam and generates decoded video information, and a maximum luminance information acquirer that acquires, in a case where a dynamic range of luminance of the video stream is a second dynamic range that is wider than a first dynamic range, maximum luminance information indicating the maximum luminance of the video stream from the video stream. The decoding system also includes an outputter that outputs the decoded video information and the maximum luminance information. Where the dynamic range of luminance of the video stream is expressed by the maximum luminance of all pictures in the video stream as the maximum luminance information, the outputter outputs the decoded video information, along with the maximum luminance information indicating the maximum luminance of all pictures in the video stream.

公开(公告)号：US20210012812A1

公开(公告)日：2021-01-14

申请号：US17038753

申请日：2020-09-30

Applicant: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA

Inventor： Hiroshi YAHATA ,  Tadamasa TOMA ,  Tomoki OGAWA

IPC: G11B27/28 ,  G11B20/10 ,  H04N5/84 ,  H04N9/804 ,  H04N9/82 ,  G11B27/10 ,  G11B27/32 ,  H04N5/85 ,  H04N7/015

Abstract: A decoding system decodes a video stream, which is encoded video information. The decoding system includes an attribute information acquirer that acquires first attribute information, indicating whether a dynamic range of luminance of the video stream is a first dynamic range or a second dynamic range that is wider than the first dynamic range, and a decoder that acquires the video steam and generates decoded video information. The decoding system also includes an outputter that, in a case where the first attribute information indicates the second dynamic range, outputs the decoded video information and maximum luminance information indicating a maximum luminance of the video stream in accordance with the second dynamic range. Further, in other cases, the outputter outputs the decoded video information and maximum luminance information indicating the maximum luminance of all pictures in the video stream.