Reproduction device, reproduction method, and recording medium

A reproduction method, comprising:

• 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, High Dynamic Range (HDR) information indicating a characteristic of luminance of the extended closed caption, and luminance conversion definition information,
• wherein luminance conversion from the extended closed caption to a standard closed caption serving as a closed caption of the first luminance range is executed from a recording medium based on the luminance conversion definition information, and
• wherein a video stream of a High Efficiency Video Coding (HEVC) scheme and as Supplemental Enhancement Information (SEI) of the video stream, the extended closed caption, and information identifying the HDR information and the luminance conversion definition information are recorded on the recording medium;
• converting, by the reproduction device, the extended closed caption into the standard closed caption based on the luminance conversion definition information;
• and
• outputting, by the reproduction device, the extended closed caption and the HDR information to a display device that displays the extended closed caption and outputting the standard closed caption to the display device that restricts display of the extended closed caption.

A computer-readable medium having stored thereon computer-readable instructions, which when executed by a computer, cause the computer to execute operations, the operations comprising:

• reading, 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, High Dynamic Range (HDR) information indicating a characteristic of luminance of the extended closed caption, and luminance conversion definition information, from a recording medium,
• wherein luminance conversion from the extended closed caption to a standard closed caption serving as a closed caption of the first luminance range is executed based on the luminance conversion definition information, and
• wherein a video stream of a High Efficiency Video Coding (HEVC) scheme and as Supplemental Enhancement Information (SEI) of the video stream, the extended closed caption, and information identifying the HDR information and the luminance conversion definition information are recorded on 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 that displays the extended closed caption and outputting the converted standard closed caption to the display device that restricts display of the extended closed caption.

A reproduction device, comprising:

• one or more processors configured to:
• read a standard closed caption that serves as a closed caption of a first luminance range, High Dynamic Range (HDR) information indicating a characteristic of luminance of an extended closed caption that serves 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,
• wherein luminance conversion from the standard closed caption to the extended closed caption is executed from a recording medium based on the luminance conversion definition information, and
• wherein a video stream of a High Efficiency Video Coding (HEVC) scheme, and as Supplemental Enhancement Information (SEI) of the video stream, the standard closed caption, and information identifying the HDR information and the luminance conversion definition information are recorded on the recording medium;
• convert the standard closed caption into the extended closed caption based on the luminance conversion definition information;
• and
• output the extended closed caption and the HDR information to a display device that displays the extended closed caption and output the standard closed caption to the display device that restricts display of the extended closed caption.

A reproduction method, comprising:

• reading, by a reproduction device, a standard closed caption serving as a closed caption of a first luminance range, High Dynamic 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,
• wherein luminance conversion from the standard closed caption to the extended closed caption is executed from a recording medium based on the luminance conversion definition information, and
• wherein a video stream of a High Efficiency Video Coding (HEVC) scheme, and as Supplemental Enhancement Information (SEI) of the video stream, the standard closed caption, and information identifying the HDR information and the luminance conversion definition information are recorded on the recording medium;
• converting, by the reproduction device, the standard closed caption into the extended closed caption based on the luminance conversion definition information;
• and
• outputting, by the reproduction device, the extended closed caption and the HDR information to a display device that displays the extended closed caption and outputting the standard closed caption to the display device that restricts display of the extended closed caption.

A non-transitory computer-readable medium having stored thereon computer-readable instructions, which when executed by a computer, cause the computer to execute operations, the operations comprising:

• reading a standard closed caption serving as a closed caption of a first luminance range High Dynamic 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 ranged, and luminance conversion definition information,
• wherein luminance conversion from the standard closed caption to the extended closed caption is executed from a recording medium based on the luminance conversion definition information,
• and wherein a video stream of a High Efficiency Video Coding (HEVC) scheme, and as Supplemental Enhancement Information (SEI) of the video stream, the standard closed caption, and information identifying the HDR information and the luminance conversion definition information are recorded on 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 that displays the extended closed caption and outputting the standard closed caption to the display device that restricts display of the extended closed caption.

A reproduction device, comprising:

• one or more processors configured to:
• read an extended closed caption that serves as a closed caption of a second luminance range that is different from and larger than a first luminance range, High Dynamic Range (HDR) information that indicates a characteristic of luminance of the extended closed caption, and luminance conversion definition information,
• wherein luminance conversion from the extended closed caption to a standard closed caption that serves as a closed caption of the first luminance range is executed, based on the luminance conversion definition information, from a recording medium on which the extended closed caption, the HDR information, and the luminance conversion definition information are recorded,
• wherein the luminance conversion definition information is first tone_mapping_info in which one of 0, 2, and 3 is set as a value of tone_map_mode1_id, and
• wherein the HDR information is second tone_mapping_info in which 4 is set as a value of the tone_map_mode1_id;
• convert the extended closed caption into the standard closed caption based on the luminance conversion definition information;
• and
• output the extended closed caption and the HDR information to a display device that displays the extended closed caption and output the standard closed caption to the display device that restricts display of the extended closed caption.

A reproduction device, comprising:

• one or more processors configured to:
• read a standard closed caption that serves as a closed caption of a first luminance range, High Dynamic Range (HDR) information that indicates a characteristic of luminance of an extended closed caption that serves 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,
• wherein luminance conversion from the standard closed caption to the extended closed caption is executed, based on the luminance conversion definition information, from a recording medium on which the standard closed caption, the HDR information, and the luminance conversion definition information are recorded,
• wherein the luminance conversion definition information is first tone_mapping_info in which one of 0, 2, and 3 is set as a value of tone_map_mode1_id, and
• wherein the HDR information is second tone_mapping_info in which 4 is set as a value of the tone_map_mode1_id;
• convert the standard closed caption into the extended closed caption based on the luminance conversion definition information;
• and
• output the extended closed caption and the HDR information to a display device that displays the extended closed caption and output the standard closed caption to the display device that restricts display of the extended closed caption.