Reproduction device, reproduction method, and recording medium

A reproduction method comprising:

• a reading step of reading, by a reproduction device, an extended closed caption serving as a closed caption of a second luminance range that is different from and larger than a first luminance range, HDR information indicating a characteristic of luminance of the extended closed caption, and luminance conversion definition information used when luminance conversion from the extended closed caption to a standard closed caption serving as a closed caption of the first luminance range is performed from a recording medium on which the extended closed caption, the HDR information, and the luminance conversion definition information are recorded;
• a conversion step of converting, by the reproduction device, the extended closed caption into the standard closed caption based on the luminance conversion definition information;
• and
• an output step of outputting, by the reproduction device, the extended closed caption and the HDR information to a display device capable of displaying the extended closed caption and outputting the standard closed caption converted in the process of the conversion step to a display device incapable of displaying the extended closed caption.

A recording medium on which are recorded:

• an extended closed caption serving as a closed caption of a second luminance range that is different from and larger than a first luminance range;
• HDR information indicating a characteristic of luminance of the extended closed caption;
• and
• luminance conversion definition information used when luminance conversion from the extended closed caption to a standard closed caption serving as a closed caption of the first luminance range is performed,
• wherein a reproduction device configured to reproduce the recording medium performs a process of
• reading the extended closed caption, the HDR information, and the luminance conversion definition information from the recording medium,
• converting the extended closed caption into the standard closed caption based on the luminance conversion definition information, and
• outputting the extended closed caption and the HDR information to a display device capable of displaying the extended closed caption and outputting the converted standard closed caption to a display device incapable of displaying the extended closed caption.

A reproduction device comprising:

• a reading unit configured to read a standard closed caption serving as a closed caption of a first luminance range, HDR information indicating a characteristic of luminance of an extended closed caption serving as a closed caption of a second luminance range that is different from and larger than the first luminance range, and luminance conversion definition information used when luminance conversion from the standard closed caption to the extended closed caption is performed from a recording medium on which the standard closed caption, the HDR information, and the luminance conversion definition information are recorded;
• a conversion unit configured to convert the standard closed caption into the extended closed caption based on the luminance conversion definition information;
• and
• an output unit configured to output the extended closed caption converted by the conversion unit and the HDR information to a display device capable of displaying the extended closed caption and output the standard closed caption to a display device incapable of displaying the extended closed caption.

A reproduction method comprising:

• a reading step of reading, by a reproduction device, a standard closed caption serving as a closed caption of a first luminance range, HDR information indicating a characteristic of luminance of an extended closed caption serving as a closed caption of a second luminance range that is different from and larger than the first luminance range, and luminance conversion definition information used when luminance conversion from the standard closed caption to the extended closed caption is performed from a recording medium on which the standard closed caption, the HDR information, and the luminance conversion definition information are recorded;
• a conversion step of converting, by the reproduction device, the standard closed caption into the extended closed caption based on the luminance conversion definition information;
• and
• an output step of outputting, by the reproduction device, the extended closed caption converted in the process of the conversion step and the HDR information to a display device capable of displaying the extended closed caption and outputting the standard closed caption to a display device incapable of displaying the extended closed caption.

A recording medium on which are recorded:

• a standard closed caption serving as a closed caption of a first luminance range;
• HDR information indicating a characteristic of luminance of an extended closed caption serving as a closed caption of a second luminance range that is different from and larger than the first luminance range;
• and
• luminance conversion definition information used when luminance conversion from the standard closed caption to the extended closed caption is performed,
• wherein a reproduction device configured to reproduce the recording medium performs a process of
• reading the standard closed caption, the HDR information, and the luminance conversion definition information from the recording medium,
• converting the standard closed caption into the extended closed caption based on the luminance conversion definition information, and
• outputting the converted extended closed caption and the HDR information to a display device capable of displaying the extended closed caption and outputting the standard closed caption to a display device incapable of displaying the extended closed caption.