Data generation method, data reproduction method, data generation device and data reproduction device

• US 10,560,999 B2
• Filed: 08/30/2019
• Issued: 02/11/2020
• Est. Priority Date: 12/03/2014
• Status: Active Grant

• Current Assignee: Panasonic Intellectual Property Management Co., Ltd. (Panasonic Holdings Corporation)
• Original Assignee: Panasonic Intellectual Property Management Co., Ltd. (Panasonic Holdings Corporation)
• Inventors: Drugeon, Virginie, Nishi, Takahiro, Toma, Tadamasa
• Primary Examiner(s): A, Minh D
• Application Number:
  US16/557,314
• Publication Number:
  US 20190387596A1
• Time in Patent Office: 165 Days
• CPC Class Codes: H02M 1/0009 Devices or circuits for detecting current in a converter
• CPC Class Codes: H02M 1/084 using a control circuit common to several phases of a multi-phase system
• CPC Class Codes: H02M 1/14 Arrangements for reducing ripples from dc input or output
• CPC Class Codes: H04N 19/70 characterised by syntax aspects related to video coding, e.g. related to compression standards
• CPC Class Codes: H04N 19/85 using pre-processing or post-processing specially adapted for video compression
• CPC Class Codes: H04N 19/98 Adaptive-dynamic-range coding [ADRC]
• CPC Class Codes: H04N 21/2343 involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements video transcoding H04N19/40; media packet handling at the source H04L65/762
• CPC Class Codes: H04N 21/236 Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream multiplexing of data packets for data networks, e.g. RTP/UDP H04L65/00
• CPC Class Codes: H04N 21/23614 Multiplexing of additional data and video streams arrangements for simultaneous broadcast of plural pieces of information H04H20/28
• CPC Class Codes: H04N 21/4345 Extraction or processing of SI, e.g. extracting service information from an MPEG stream
• CPC Class Codes: H04N 21/4402 involving reformatting operations of video signals for household redistribution, storage or real-time display details of conversion of video standards at pixel level H04N7/01; video transcoding H04N19/40; adapting incoming signals to the display format of the display terminal G09G5/005; media handling at the source in data packet switching networks H04L65/764
• CPC Class Codes: H04N 7/0117 involving conversion of the spatial resolution of the incoming video signal for graphics images G09G2340/0407
• CPC Class Codes: H05B 45/37 Converter circuits
• CPC Class Codes: H05B 47/10 Controlling the light source
• CPC Class Codes: H05B 47/11 by determining the brightness or colour temperature of ambient light
• CPC Class Codes: H05B 47/19 via wireless transmission
• CPC Class Codes: Y02B 20/40 Control techniques providing energy savings, e.g. smart controller or presence detection

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.

Claims

1. A data generation device comprising:

a generating circuit configured to generate video data according to a High Efficiency Video Coding (HEVC) standard; and

a storage to store;

video usability information (VUI) including a value selected from candidate values, the candidate values indicating respective opt-electrical transfer functions (OETFs); and

supplemental enhancement information (SEI) including a high dynamic range (HDR) parameter, wherein

the OETFs include at least one OETF supporting a standard dynamic range (SDR) for the video data, and

the HDR parameter is provided to widen a SDR to generate a HDR for the video data.

2. The data generation device according to claim 1, wherein the HDR parameter is a ratio of the HDR to the SDR.

3. The data generation device according to claim 2, wherein the ratio is equal to 4, 6, or 8.

4. The data generation device according to claim 2, wherein the ratio is a fixed value.

5. A data reproduction method comprising:

receiving video data from a data generation device, the video data being generated according to a High Efficiency Video Coding (HEVC) standard;

receiving from the data generation device;

video usability information (VUI) including a value selected from candidate values, the candidate values indicating respective opt-electrical transfer functions (OETFs), the OETFs including at least one OETF supporting a standard dynamic range (SDR) for the video data; and

supplemental enhancement information (SEI) including a high dynamic range (HDR) parameter; and

widening a SDR to generate a HDR according to the HDR parameter to reproduce the video data.

6. The data reproduction method according to claim 5, wherein the HDR parameter is a ratio of the HDR to the SDR.

7. The data reproduction method according to claim 6, wherein the ratio is equal to 4, 6, or 8.

8. The data reproduction method according to claim 6, wherein the ratio is a fixed value.

9. A data reproduction device comprising:

first receiving circuitry configured to receive video data from a data generation device, the video data being generated according to a High Efficiency Video Coding (HEVC) standard;

second receiving circuitry configured to receive from the data generation device;

video usability information (VUI) including a value selected from candidate values, the candidate values indicating respective opt-electrical transfer functions (OETFs), the OETFs including at least one OETF supporting a standard dynamic range (SDR) for the video data; and

supplemental enhancement information (SEI) including a high dynamic range (HDR) parameter; and

signal processing circuitry configured to widen a SDR to generate a HDR according to the HDR parameter to reproduce the video data.

10. The data reproduction device according to claim 9, wherein the HDR parameter is a ratio of the HDR to the SDR.

11. The data reproduction device according to claim 10, wherein the ratio is equal to 4, 6, or 8.

12. The data reproduction device according to claim 10, wherein the ratio is a fixed value.