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Playback method according to function of playback device

  • US 10,257,486 B2
  • Filed: 05/16/2017
  • Issued: 04/09/2019
  • Est. Priority Date: 06/30/2014
  • Status: Active Grant
First Claim
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1. A playback device comprising:

  • a first remapper that reads a video signal having a first luminance range from a recording medium, performs electro-optical transfer function (EOTF) conversion associated with the first luminance range on a code value represented by a luminance signal in the video signal to obtain a first luminance value, and converts the first luminance value obtained by the EOTF conversion into a second luminance value associated with a second luminance range different in maximum value from the first luminance range;

    a second remapper that reads a graphics signal having the first luminance range from the recording medium and performs the EOTF conversion associated with the first luminance range on a code value represented by a luminance signal in the graphics signal to obtain a third luminance value, the second remapper not performing conversion on the third luminance value obtained by the EOTF conversion;

    a synthesizer that synthesizes the video signal having the second luminance value converted by the first remapper with the graphics signal having the third luminance value not converted by the second remapper; and

    an outputter that outputs a signal synthesized by the synthesizer to a display device.

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