REPRODUCTION DEVICE, REPRODUCTION METHOD, AND RECORDING MEDIUM

• US 20160100183A1
• Filed: 06/06/2014
• Published: 04/07/2016
• 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: HAMADA, TOSHIYA, YAMAMOTO, KAZUO, TAKAHASHI, KUNIAKI, HATTORI, SHINOBU
• Granted Patent: US 9,986,253 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• 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 19/44 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 19/51 Motion estimation or motion compensation
• CPC Class Codes: H04N 19/61 in combination with predictive coding
• 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 5/445 for displaying additional information H04N5/50 takes precedence
• CPC Class Codes: H04N 5/76 Television signal recording
• CPC Class Codes: H04N 5/91 Television signal processing therefor

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 an 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 outputs data of the extended video after adding frame information including the brightness characteristic information to frame data when information acquired from a display device that is to be an output destination of the video includes information representing a display performance of the extended video, and when no information representing the display performance of the extended video is included, outputs the data of the standard 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

a communication unit configured to acquire, from a display device that is to be an output destination of a video, performance information that is information representing a performance of the display device, to output data of the extended video after adding frame information including the brightness characteristic information to frame data when the performance information includes information representing a display performance of the extended video, and to output data of the standard video when the performance information includes no information representing the display performance of the extended video.

2. The reproduction device according to claim 1,

wherein the information representing the display performance of the extended video includes a first flag that represents whether to output the extended video without adjusting a brightness of the extended video or to output the extended video after adjusting the brightness of the extended video, and

wherein the communication unit changes the extended video to be output according to a value of the first flag.

3. The reproduction device according to claim 2,

wherein when the extended video on which an adjustment of the brightness has been performed is output, the communication unit outputs the data of the extended video in which the frame information including the brightness characteristic information representing the brightness characteristic after the adjustment is added to the frame data.

4. The reproduction device according to claim 3,

wherein the frame information includes a second flag that represents whether the extended video to be output is a video on which no adjustment of the brightness has been performed or is a video on which an adjustment of the brightness has been performed.

5. The reproduction device according to claim 1,

wherein the communication unit performs communication with the display device in accordance with an HDMI standard to acquire an EDID serving as the performance information from the display device, and outputs the data of the extended video in which an InfoFrame serving as the frame information is added to the frame data.

6. The reproduction device according to claim 1,

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.

7. 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 acquiring, from a display device that is to be an output destination of a video, performance information that is information representing a performance of the display device;

a step of outputting data of the extended video after adding frame information including the brightness characteristic information to frame data when the performance information includes information representing a display performance of the extended video; and

a step of outputting data of the standard video when the performance information includes no information representing the display performance of the extended video.

8. 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,

acquiring, from a display device that is to be an output destination of a video, performance information that is information representing a performance of the display device,

outputting data of the extended video after adding frame information including the brightness characteristic information to frame data when the performance information includes information representing a display performance of the extended video, and

outputting data of the standard video when the performance information includes no information representing the display performance of the extended video.

9. 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

a communication unit configured to acquire, from a display device that is to be an output destination of a video, performance information that is information representing a performance of the display device, to output data of the extended video after adding frame information including the brightness characteristic information to frame data when the performance information includes information representing a display performance of the extended video, and to output data of the standard video when the performance information includes no information representing the display performance of the extended video.

10. The reproduction device according to claim 9,

wherein the information representing the display performance of the extended video includes a first flag that represents whether to output the extended video without adjusting a brightness of the extended video or to output the extended video after adjusting the brightness of the extended video, and

wherein the communication unit changes the extended video to be output according to a value of the first flag.

11. The reproduction device according to claim 10,

wherein when the extended video on which an adjustment of the brightness has been performed is output, the communication unit outputs the data of the extended video in which frame information including the brightness characteristic information representing the brightness characteristic after the adjustment is added to the frame data.

12. The reproduction device according to claim 11,

wherein the frame information includes a second flag that represents whether the extended video to be output is a video on which no adjustment of the brightness has been performed or is a video on which an adjustment of the brightness has been performed.

13. The reproduction device according to claim 9,

wherein the communication unit performs communication with the display device in accordance with an HDMI standard to acquire an EDID serving as the performance information from the display device, and outputs the data of the extended video in which an InfoFrame serving as the frame information is added to the frame data.

14. The reproduction device according to claim 9,

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.

15. 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 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 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 acquiring, from a display device that is to be an output destination of a video, performance information that is information representing a performance of the display device;

a step of outputting data of the extended video after adding frame information including the brightness characteristic information to frame data when the performance information includes information representing a display performance of the extended video; and

a step of outputting data of the standard video when the performance information includes no information representing the display performance of the extended video.

16. 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,

acquiring, from a display device that is to be an output destination of a video, performance information that is information representing a performance of the display device,

outputting data of the extended video after adding frame information including the brightness characteristic information to frame data when the performance information includes information representing a display performance of the extended video, and

outputting data of the standard video when the performance information includes no information representing the display performance of the extended video.