Information processing apparatus, information recording medium, information processing method, and program

An information processing apparatus that reproduces data recorded onto a recording medium, the apparatus comprising:

• circuitry configured to
• convert a color space of an image recorded onto the recording medium,
• convert a dynamic range of the image recorded onto the recording medium, and
• superimpose a main content image and a sub-content image recorded onto the recording medium,
• wherein, when a color space of the main content image corresponds to BT.709 format, the circuitry determines to convert color spaces of the sub-content image and the main content image into a same color space,
• wherein, when the color space of the main content image corresponds to BT.2020 format, no color space conversion is applied to the color space of the sub-content image, and
• wherein, when a dynamic range of the main content image corresponds to high dynamic range (HDR) having expanded color and luminance ranges as compared to standard dynamic range (SDR), no conversion is applied to a dynamic range of the sub-content image.

An information processing method for reproducing data recorded onto a recording medium, the method comprising:

• converting a color space of an image recorded onto the recording medium;
• converting a dynamic range of the image recorded onto the recording medium;
• and
• superimposing a main content image and a sub-content image recorded onto the recording medium,
• wherein, when a color space of the main content image corresponds to BT.709 format, the color spaces of the sub-content image and the main content image are converted into a same color space,
• wherein, when the color space of the main content image corresponds to BT.2020 format, the color space of the sub-content image is not converted into BT.2020 format, and
• wherein, when a dynamic range of the main content image corresponds to high dynamic range (HDR) having expanded color and luminance ranges as compared to standard dynamic range (SDR), a dynamic range of the sub-content image is not converted into HDR.

A non-transitory computer-readable medium having embodied thereon a program, which when executed by a computer causes the computer to execute an information processing method for reproducing data recorded onto a recording medium, the method comprising:

• converting a color space of an image recorded onto the recording medium;
• converting a dynamic range of the image recorded onto the recording medium;
• and
• superimposing a main content image and a sub-content image recorded onto the recording medium,
• wherein, when a color space of the main content image corresponds to BT.709 format, the color spaces of the sub-content image and the main content image are converted into a same color space,
• wherein, when the color space of the main content image corresponds to BT.2020 format, the color space of the sub-content image is not converted into BT.2020 format, and
• wherein, when a dynamic range of the main content image corresponds to high dynamic range (HDR) having expanded color and luminance ranges as compared to standard dynamic range (SDR), a dynamic range of the sub-content image is not converted into HDR.