Display apparatus with reduced amount of calculation

A display apparatus comprising:

• a light emitter having a light-emitting region that is divided into a plurality of light-emitting blocks based on control data supplied from outside, wherein each of the light-emitting blocks includes one or more light-emitting segments;
• a display device having a display area that is divided into a plurality of display blocks based on the control data supplied from the outside, wherein each of the display blocks includes a plurality of display segments corresponding to the one or more respective light-emitting segments, and the display blocks correspond to the respective light-emitting blocks;
• and
• a control circuit configured to output, to the light emitter, a light emission amount control signal for controlling the amount of light emission from the one or more light-emitting segments, in accordance with image data supplied from an outside and control data supplied from the outside, wherein
• the control circuit is configured to control the amount of light emission individually in the light-emitting blocks that are defined by dividing the light-emitting region based on the control data,
• the light-emitting blocks include a first light-emitting block and a second light-emitting block, and a number of the one or more light-emitting segments in the first light-emitting block is different from a number of the one or more light-emitting segments in the second light-emitting block, wherein the control circuit includes a virtual light source light emission amount calculator configured to determine La using Expression (2) based on Expression (1):
• A=a/2m (1)
• La=L(n+1)−{L(n+1)−Ln}×(2×A{circumflex over ( )}3−3×A{circumflex over ( )}2+1) (2)
• where Ln is an amount of light emission from the light-emitting segment having a relatively small amount of light emission, L(n+1) is an amount of light emission from the light-emitting segment having a relatively large amount of light emission, and La is an amount of light emission from a first virtual light source or a second virtual light source that irradiates an a-th pixel counting from a side farther from the boundary and on a side of the light-emitting segment having a relatively small amount of light emission out of the pixels arranged within a range up to the m-th position in the direction away from the boundary.

A display apparatus comprising:

• a light emitter having a light-emitting region that is divided into a plurality of light-emitting blocks, wherein each of the light-emitting blocks includes one or more light-emitting segments, the light-emitting blocks include a first light-emitting block and a second light-emitting block, and a number of the one or more light-emitting segments in the first light-emitting block is different from a number of the one or more light-emitting segments in the second light-emitting block;
• a display device having a display area that is divided into a plurality of display blocks, wherein each of the display blocks includes a plurality of display segments corresponding to the one or more respective light-emitting segments, and the display blocks correspond to the respective light-emitting blocks;
• and
• a control circuit configured to control the display device and the light emitter in accordance with image data supplied from an outside,
• wherein a necessary luminance is a luminance to display a brightest display segment in each of the light-emitting blocks,
• the control circuit is configured to determine the necessary luminance for each of the light emitting blocks in accordance with the image data;
• and control each of the one or more light-emitting segments based on the necessary luminance in each of the light-emitting blocks, wherein the control circuit includes a virtual light source light emission amount calculator configured to determine La using Expression (2) based on Expression (1):
• A=a/2m (1)
• La=L(n+1)−{L(n+1)−Ln}×(2×A{circumflex over ( )}3−3×A{circumflex over ( )}2+1) (2)
• where Ln is an amount of light emission from the light-emitting segment having a relatively small amount of light emission, L(n+1) is an amount of light emission from the light-emitting segment having a relatively large amount of light emission, and La is an amount of light emission from a first virtual light source or a second virtual light source that irradiates an a-th pixel counting from a side farther from the boundary and on a side of the light-emitting segment having a relatively small amount of light emission out of the pixels arranged within a range up to the m-th position in the direction away from the boundary.