REPRODUCTION DEVICE, REPRODUCTION METHOD, AND RECORDING MEDIUM

• US 20160134832A1
• Filed: 06/06/2014
• Published: 05/12/2016
• Est. Priority Date: 06/20/2013
• Status: Active Grant

• Current Assignee: Saturn Licensing LLC (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: YAMAMOTO, Kazuo, HAMADA, Toshiya, TAKAHASHI, Kuniaki, HATTORI, Shinobu
• Granted Patent: US 9,774,819 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• 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. Data of the extended video and the brightness characteristic information is output to a display device that is capable of displaying the extended video and data of the standard video is output to a display device that is not capable of displaying the extended video. The present technology can be applied to a player that reproduces content.

Claims

1. A reproduction device, comprising:

a readout unit configured to read out, from a recording medium that has recorded 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 coded data, the brightness characteristic information, and the brightness conversion definition information;

a decoding unit configured to decode the coded data;

a conversion unit configured to convert the extended video obtained by decoding the coded data to the standard video on a basis of the brightness conversion definition information; and

an output unit configured to output data of the extended video and the brightness characteristic information to a display device that is capable of displaying the extended video and configured to output data of the standard video to a display device that is not capable of displaying the extended video.

2. The reproduction device according to claim 1,

wherein the brightness characteristic information and the brightness conversion definition information are inserted, as auxiliary information of the coded data, in a stream including the coded data and are recorded in the recording medium.

3. The reproduction device according to claim 2,

wherein the coded data is coded data of an HEVC, and the brightness characteristic information and the brightness conversion definition information are each an SEI of an HEVC stream.

4. The reproduction device according to claim 3,

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.

5. The reproduction device according to claim 4,

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.

6. The reproduction device according to claim 1,

wherein information related to reproduction of the coded data, the information including a flag representing whether a recording of the extended video as a master is being performed, is further recorded in the recording medium, and

wherein when the flag represents that the recording of the extended video as the master is being performed, the decoding unit decodes the coded data.

7. The reproduction device according to claim 6,

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.

8. The reproduction device according to claim 6,

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.

9. A reproduction method comprising:

a step of reading out, from a recording medium that has recorded 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 coded data, the brightness characteristic information, and the brightness conversion definition information;

a step of decoding the coded data;

a step of converting the extended video obtained by decoding the coded data to the standard video on a basis of the brightness conversion definition information;

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

a step of outputting data of the standard video to a display device that is not capable of displaying the extended video.

10. A recording medium,

wherein

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

are recorded, and

wherein a reproduction device that reproduces the recording medium executes processing of

reading out the coded data, the brightness characteristic information, and the brightness conversion definition information from the recording medium,

decoding the coded data,

converting the extended video obtained by decoding the coded data to the standard video on a basis of the brightness conversion definition information,

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

outputting data of the standard video to a display device that is not capable of displaying the extended video.

11. A reproduction device, comprising:

a readout unit configured to read out, from a recording medium that has recorded coded data of a standard video that is obtained by performing a brightness conversion of an extended video that is a video having a second brightness range that is wider than a first brightness range, the standard video being a video having the first brightness range, brightness characteristic information that represents a brightness characteristic of the extended video, and brightness conversion definition information used when performing the brightness conversion of the standard video to the extended video, the coded data, the brightness characteristic information, and the brightness conversion definition information;

a decoding unit configured to decode the coded data;

a conversion unit configured to convert the standard video obtained by decoding the coded data to the extended video on a basis of the brightness conversion definition information; and

an output unit configured to output data of the extended video and the brightness characteristic information to a display device that is capable of displaying the extended video and configured to output data of the standard video to a display device that is not capable of displaying the extended video.

12. The reproduction device according to claim 11,

wherein the brightness characteristic information and the brightness conversion definition information are inserted, as auxiliary information of the coded data, in a stream including the coded data and are recorded in the recording medium.

13. The reproduction device according to claim 12,

wherein the coded data is coded data of an HEVC, and the brightness characteristic information and the brightness conversion definition information are each an SEI of an HEVC stream.

14. The reproduction device according to claim 13,

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.

15. The reproduction device according to claim 14,

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.

16. The reproduction device according to claim 11,

wherein information related to reproduction of the coded data, the information including a flag representing whether a recording of the extended video as a master is being performed, is further recorded in the recording medium, and

wherein when the flag represents that the recording of the extended video as the master is being performed, the decoding unit decodes the coded data.

17. The reproduction device according to claim 16,

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.

18. The reproduction device according to claim 16,

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.

19. A reproduction method comprising:

a step of reading out, from a recording medium that has recorded coded data of a standard video that is obtained by performing a brightness conversion of an extended video that is a video having a second brightness range that is wider than a first brightness range, the standard video being a video having the first brightness range, brightness characteristic information that indicates a brightness characteristic of the extended video, and brightness conversion definition information used when performing the brightness conversion of the standard video to the extended video, the coded data, the brightness characteristic information, and the brightness conversion definition information;

a step of decoding the coded data;

a step of converting the standard video obtained by decoding the coded data to the extended video on a basis of the brightness conversion definition information;

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

a step of outputting data of the standard video to a display device that is not capable of displaying the extended video.

20. A recording medium,

wherein

coded data of a standard video that is obtained by performing a brightness conversion of an extended video that is a video having a second brightness range that is wider than a first brightness range, the standard video being a video having the first brightness range,

brightness characteristic information that represents a brightness characteristic of the extended video, and

brightness conversion definition information used when performing the brightness conversion of the standard video to the extended video,

are recorded, and

wherein a reproduction device that reproduces the recording medium executes processing of

reading out the coded data, the brightness characteristic information, and the brightness conversion definition information from the recording medium,

decoding the coded data,

converting the standard video obtained by decoding the coded data to the extended video on a basis of the brightness conversion definition information,

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

outputting data of the standard video to a display device that is not capable of displaying the extended video.