A conversion method for converting luminance of a video, including a luminance value in a first luminance range, to be displayed on a display apparatus includes: acquiring a first luminance signal indicating a code value obtained by quantization of the luminance value of the video; and converting the code value indicated by the acquired first luminance signal into a second luminance value determined based on a luminance range of the display apparatus, the second luminance value being compatible with a second luminance range with a maximum value smaller than a maximum value of the first luminance range and larger than 100 nit. This provides the conversion method capable of achieving further improvement.

A display apparatus includes a first signal transmission device provided with a first video cable configured to selectively transmit a first image signal transmitted by a first method and a second image signal transmitted by a second method, an audio cable configured to transmit a sound signal, and a first output connector connected to the first video cable and the audio cable; a second signal transmission device provided with a second video cable configured to transmit a third image signal transmitted by the second method, and a second output connector connected to the second video cable.

An aggregation device in a home network accumulates information from audio video apparatuses in the network that the apparatuses require enablement of respective licensable components for which no license event has yet occurred. The aggregation device sends an indication of the license events to a server so that appropriate royalties may be paid post-sale of the various devices.

A method to be performed by a playback device includes determining whether the playback device has a function for converting first graphics in a second luminance range narrower than a first luminance range to second graphics in the first luminance range, when the playback device has the function, converting the first graphics to the second graphics, and displaying a video in the first luminance range with the second graphics being superimposed on the video, and when the playback device does not have the function, displaying the video with third graphics different from the second graphics being superimposed on the video.

A conversion method for converting luminance of a video, including a luminance value in a first luminance range, to be displayed on a display apparatus includes: acquiring a first luminance signal indicating a code value obtained by quantization of the luminance value of the video; and converting the code value indicated by the acquired first luminance signal into a second luminance value determined based on a luminance range of the display apparatus, the second luminance value being compatible with a second luminance range with a maximum value smaller than a maximum value of the first luminance range and larger than 100 nit. This provides the conversion method capable of achieving further improvement.

A graphics display system integrated circuit is used in a set-top box for controlling a television display. The graphics display system processes analog video input, digital video input, and graphics input. The system incorporates a unified memory architecture that is shared by the graphics system, a CPU, and other peripherals. The unified memory architecture uses real time scheduling to service tasks. Critical instant analysis is used to find a schedule for memory usage that does not affect memory requirements of real time tasks while at the same time servicing non-real-time tasks as needed.

A video decoder provides decoding of encoded video that includes reference pictures and picture sample values corresponding to one of at least two digital video formats having different color characteristics The decoder includes a bit depth scaling operator that provides bit depth scaling of reference pictures in the encoded video and bit depth scaling of picture sample values in the encoded video to improves handling of differing color characteristics (e.g., resolution, quantization bit-depth, and color gamut) employed in different digital video formats.