Reproduction device, reproduction method, and recording medium

A reproduction method comprising:

• a reading step of reading, by a reproduction device, association information, extended graphics, HDR information, and luminance conversion definition information, from a recording medium having recorded therein the association information which associates the extended graphics, which are graphics having a second luminance range different from and broader than a first luminance range, with the HDR information indicating a luminance characteristic of the extended graphics, and the luminance conversion definition information used when luminance conversion from the extended graphics to standard graphics which are graphics having the first luminance range is performed, the extended graphics, the HDR information, and the luminance conversion definition information;
• a conversion step of converting, by the reproduction device, the extended graphics into the standard graphics based on the luminance conversion definition information associated with the extended graphics in the association information;
• and
• an output step of outputting, by the reproduction device, the extended graphics and the HDR information associated with the extended graphics in the association information to a display device which is capable of displaying the extended graphics, and outputting, by the reproduction device, the standard graphics converted in the conversion step to a display device which is not capable of displaying the extended graphics.

A recording medium recording:

• association information configured to associate extended graphics which are graphics having a second luminance range different from and broader than a first luminance range with HDR information indicating a luminance characteristic of the extended graphics, and luminance conversion definition information used when luminance conversion from the extended graphics to standard graphics, which are graphics having the first luminance range is performed;
• the extended graphics;
• the HDR information;
• and
• the luminance conversion definition information,
• wherein a reproduction device reproducing the recording medium performs processes of
• reading the association information, the extended graphics, the HDR information, and the luminance conversion definition information from the recording medium,
• converting the extended graphics into the standard graphics based on the luminance conversion definition information associated with the extended graphics in the association information, and
• outputting the extended graphics and the HDR information associated with the extended graphics in the association information to a display device which is capable of displaying the extended graphics, and outputting the converted standard graphics to a display device which is not capable of displaying the extended graphics.

A reproduction device comprising:

• a reading unit configured to read association information, extended graphics, HDR information, and luminance conversion definition information from a recording medium having recorded therein the association information which associates standard graphics, which are graphics having a first luminance range, with the HDR information indicating a luminance characteristic of the extended graphics, which are graphics having a second luminance range different from and broader than the first luminance range and the luminance conversion definition information used when luminance conversion from the standard graphics to the extended graphics is performed, the standard graphics, the HDR information, and the luminance conversion definition information;
• a conversion unit configured to convert the standard graphics into the extended graphics based on the luminance conversion definition information associated with the standard graphics in the association information;
• and
• an output unit configured to output the extended graphics converted by the conversion unit and the HDR information associated with the standard graphics before the conversion in the association information to a display device which is capable of displaying the extended graphics, and to output the standard graphics to a display device which is not capable of displaying the extended graphics.

A reproduction method comprising:

• a reading step of reading, by a reproduction device, association information, extended graphics, HDR information, and luminance conversion definition information from a recording medium having recorded therein the association information which associates standard graphics, which are graphics having a first luminance range, with the HDR information indicating a luminance characteristic of the extended graphics, which are graphics having a second luminance range different from and broader than the first luminance range and the luminance conversion definition information used when luminance conversion from the standard graphics to the extended graphics is performed, the standard graphics, the HDR information, and the luminance conversion definition information;
• a conversion step of converting, by the reproduction device, the standard graphics into the extended graphics based on the luminance conversion definition information associated with the standard graphics in the association information;
• and
• an output step of outputting, by the reproduction device, the extended graphics converted in the conversion step and the HDR information associated with the standard graphics before the conversion in the association information to a display device which is capable of displaying the extended graphics, and outputting, by the reproduction device, the standard graphics to a display device which is not capable of displaying the extended graphics.

A recording medium recording:

• association information which associates standard graphics which are graphics having a first luminance range with HDR information indicating a luminance characteristic of the extended graphics which are graphics having a second luminance range different from and broader than the first luminance range and the luminance conversion definition information used when luminance conversion from the standard graphics to the extended graphics is performed;
• the standard graphics;
• the HDR information;
• and
• the luminance conversion definition information,
• wherein a reproduction device reproducing the recording medium performs processes of
• reading the association information, the extended graphics, the HDR information, and the luminance conversion definition information from the recording medium,
• converting the standard graphics into the extended graphics based on the luminance conversion definition information associated with the standard graphics in the association information, and
• outputting the converted extended graphics and the HDR information associated with the standard graphics before the conversion in the association information to a display device which is capable of displaying the extended graphics, and outputting the standard graphics to a display device which is not capable of displaying the extended graphics.