Reproduction device, reproduction method, and recording medium

• US 10,070,097 B2
• Filed: 05/20/2016
• Issued: 09/04/2018
• Est. Priority Date: 06/20/2013
• Status: Active Grant

• Current Assignee: Saturn Licensing LLC (Sony Group Corp.)
• Original Assignee: Saturn Licensing LLC (Sony Group Corp.)
• Inventors: Yamamoto, Kazuo, Hamada, Toshiya, Takahashi, Kuniaki, Hattori, Shinobu
• Primary Examiner(s): Chevalier, Robert
• Application Number:
  US15/160,642
• Publication Number:
  US 20160269676A1
• Time in Patent Office: 837 Days
• Field of Search: 386248, 386307, 386324, 386326, 386335, 386337, 386354, 386355
• CPC Class Codes: G09G 2320/0276 for the purpose of adaptation to the characteristics of a display device, i.e. gamma correction
• CPC Class Codes: G09G 5/10 Intensity circuits
• CPC Class Codes: G11B 20/10 Digital recording or reproducing
• CPC Class Codes: G11B 2220/2541 Blu-ray discs; Blue laser DVR discs
• CPC Class Codes: G11B 27/105 of operating discs
• CPC Class Codes: G11B 27/329 on a disc [VTOC]
• CPC Class Codes: H04N 19/184 the unit being bits, e.g. of the compressed video stream
• CPC Class Codes: H04N 19/30 using hierarchical techniques, e.g. scalability H04N19/63 takes precedence
• CPC Class Codes: H04N 19/44 Decoders specially adapted therefor, e.g. video decoders which are asymmetric with respect to the encoder
• CPC Class Codes: H04N 19/46 Embedding additional information in the video signal during the compression process H04N19/517, H04N19/68, H04N19/70 take precedence
• CPC Class Codes: H04N 19/70 characterised by syntax aspects related to video coding, e.g. related to compression standards
• CPC Class Codes: H04N 5/9201 involving the multiplexing of an additional signal and the video signal
• CPC Class Codes: H04N 9/87 Regeneration of colour television signals H04N9/80 takes precedence

Abstract

The present technology relates to a reproduction device, a reproduction method, and a recording medium that enable content having a wide dynamic range of brightness to be displayed with an appropriate brightness. A recording medium, on which the reproduction device of one aspect of the present technology performs reproduction, records coded data of an extended video that is a video having a second brightness range that is wider than a first brightness range, brightness characteristic information that represents a brightness characteristic of the extended video, and brightness conversion definition information used when performing a brightness conversion of the extended video to a standard video that is a video having the first brightness range. The reproduction device decodes the coded data and converts the extended video obtained by decoding the coded data to the standard video on the basis of the brightness conversion definition information.

Claims

1. A reproduction device, comprising:

circuitry configured to

obtain brightness characteristic information and coded second video that is a video having a second brightness range that is wider than a first brightness range,

decode the coded second video,

convert, to a first video, the second video obtained by the decoding of the coded second video,

initiate an outputting of data of the second video and the brightness characteristic information, to a display device that is capable of displaying the second video, and

initiate an outputting of data of the first video to a display device that is not capable of displaying the second video.

2. The reproduction device according to claim 1,

wherein the brightness characteristic information comprises a reference screen luminance parameter.

3. The reproduction device according to claim 1,

wherein the brightness characteristic information represents a brightness characteristic of the second video.

4. The reproduction device according to claim 1,

wherein the first video is standard (STD) video and the second video is high dynamic range (HDR) video.

5. The reproduction device according to claim 1,

wherein the circuitry is further configured to obtain brightness conversion information for use when performing a brightness conversion of the second video to the first video, which is a video having the first brightness range.

6. The reproduction device according to claim 5,

wherein the first video is converted to the second video based on the brightness conversion information.

7. The reproduction device according to claim 5,

wherein the brightness characteristic information and the brightness conversion information are inserted, as auxiliary information of the coded second video data, in a stream including the coded second video and are recorded in a recording medium prior to being obtained by the circuitry.

8. The reproduction device according to claim 7,

wherein the coded second video data is coded data of High Efficiency Video Coding (HEVC), and the brightness characteristic information and the brightness conversion information are each supplemental enhancement information (SEI) of an HEVC stream.

9. The reproduction device according to claim 8,

wherein the brightness conversion definition information is first Tone mapping information in which either one of values 0, 2, and 3 is set as a value of a tone_map_model_id, and

wherein the brightness characteristic information is second Tone mapping information in which 4 is set as the value of the tone_map_model_id.

10. The reproduction device according to claim 9,

wherein the tone_map_model_id of the first Tone mapping information and the tone_map_model_id of the second Tone mapping information are each set with a same value representing a recording mode of the recording medium.

11. The reproduction device according to claim 1, wherein the circuitry is further configured to

obtain brightness capability information that corresponds to the second brightness range, from the display device that is capable of displaying the second video.

12. The reproduction device according to claim 1,

wherein information related to reproduction of the coded second video, the information including a flag representing whether a recording of the second video as a master is being performed, is further recorded in a recording medium from which the circuitry obtains the brightness characteristic information and the coded second video, and

wherein when the flag represents that the recording of the second video as the master is being performed, the circuitry decodes the coded second video.

13. The reproduction device according to claim 12,

wherein the recording medium is a Blu-ray Disc, and

wherein the flag is included in a Clip Information file serving as the information related to the reproduction.

14. The reproduction device according to claim 12,

wherein the recording medium is a Blu-ray Disc, and

wherein the flag is included in a PlayList file serving as the information related to the reproduction.

15. A reproduction method comprising:

obtaining brightness characteristic information and coded second video that is a video having a second brightness range that is wider than a first brightness range;

decoding the coded second video;

converting, to a first video, the second video obtained by the decoding of the coded second video;

outputting data of the second video and the brightness characteristic information, to a display device that is capable of displaying the second video; and

outputting data of the first video to a display device that is not capable of displaying the second video.

16. A non-transitory computer-readable medium having embodied thereon a program, which when executed by a computer causes the computer to execute a reproduction method, the method comprising:

obtaining brightness characteristic information and coded second video that is a video having a second brightness range that is wider than a first brightness range;

decoding the coded second video;

converting, to a first video, the second video obtained by the decoding of the coded second video;

outputting data of the second video and the brightness characteristic information, to a display device that is capable of displaying the second video; and

outputting data of the first video to a display device that is not capable of displaying the second video.

17. A display device, comprising:

an interface configured to output a brightness capability information of the display device to a reproduction device, and to receive video data and brightness characteristic information from the reproduction device, wherein decoded video data is processed based on the brightness capability information by the reproduction device and the received video data is the processed decoded video data, and the brightness characteristic information represents a brightness characteristic; and

circuitry configured to control displaying of a video based on the received video data and the brightness characteristic information.

18. The display device according to 17,

wherein the brightness capability information indicates a brightness performance of the display device corresponds to high dynamic range (HDR).

19. The display device according to claim 17,

wherein the brightness characteristic information comprises a reference screen luminance parameter.

20. The display device according to claim 17,

wherein the circuitry is further configured to initiate a comparison of the brightness characteristic information and the brightness capability information, and initiate a determination to determine whether brightness of the received video data requires adjustment.

21. The display device according to claim 18,

wherein the brightness characteristic information comprises a reference screen luminance parameter.

22. The display device according to claim 18,

wherein the circuitry is further configured to initiate a comparison of the brightness characteristic information and the brightness capability information, and initiate a determination to determine whether brightness of the received video data requires adjustment.

24. The display device according to 17,

wherein the circuitry is further configured to initiate controlling of the displaying of the video based on the brightness characteristic information and a brightness performance of the display device, and initiate a determination to determine whether the brightness of the received video data requires adjustment.

25. The display device according to 17,

wherein the circuitry is further configured to initiate an adjustment of the received video data based on the brightness characteristic information and a brightness performance of the display.

23. A system comprising:

a reproduction device comprising circuitry configured to;

obtain brightness characteristic information and coded second video that is a video having a second brightness range that is wider than a first brightness range;

decode the coded second video;

convert, to a first video, the second video obtained by the decoding of the coded second video;

initiate an outputting of data of the second video and the brightness characteristic information, to a display device that is capable of displaying the second video; and

initiate an outputting of data of the first video to a display device that is not capable of displaying the second video; and

a display device comprising;

an interface configured to output a brightness capability information of the display device to the reproduction device, and to receive the data of the second video and the brightness characteristic information from the reproduction device, wherein the data of the second video is decoded and the decoded data of the second video is processed based on the brightness capability information by the reproduction device, and the brightness characteristic information represents a brightness characteristic; and

circuitry configured to control displaying of a video based on the data of the second video and the brightness characteristic information.