Sub-pixel mapping
First Claim
1. A method of mapping a four-primary input signal (IS) to sets (Pij) of four sub-pixels (RPij, GPij, BPij, WPij) of a display device (DD), whereinthe four-primary input signal (IS) comprises a sequence of input samples (Sij) each comprising a value for a first component (Rlij), a value for a second component (Glij), a value for a third component (Blij), and a value for a fourth component (Wlij), and whereinthe sets (Pij) of the four sub-pixels comprise a first sub-pixel (RPij) for supplying light having a first primary color (R), a second sub-pixel (GPij) for supplying light having a second primary color (G), a third sub-pixel (BPij) for supplying light having a third primary color, and a fourth sub-pixel (WPij) for supplying fourth light having a fourth color (W), the first, second, third and fourth color all being different, and the fourth color being within the color gamut of the first, second, and third color,the method comprising sub-sampling (MAP) the input samples (Sij) of the four primary input signal (IS) (i) by assigning, via mapping, a first component (RI11), a second component (GI11), and a third component (BI11) of a particular input sample (S11) to the first (RP11), second (GP11) and third sub-pixel (BP11) of a particular set (P11) of four adjacent sub-pixels, respectively, and (ii) by assigning, via, mapping, a fourth component (WI12) of a further input sample (S12) to the fourth sub-pixel (WP11) of said same particular set (P11) of the four adjacent sub-pixels, wherein the particular input sample (S11) and the further input sample (S12) are associated with adjacent positions on the display device (DD), and wherein the further input sample (S12) is adjacent to, separate and distinct from, the particular input sample (S11) in the input samples (Sij) of the four primary input signal (IS).
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Abstract
A method of mapping a four primary input signal to sets of four sub-pixels of a display device, the method including sub-sampling the input samples of the four primary input signal by assigning the first, second and third input signals of a particular input sample to the first, second and third sub-pixels, producing first, second and third primary colors of a particular set of four adjacent sub-pixels, respectively, and the fourth input signal of a further input sample to the fourth sub-pixel, producing a fourth color of said particular set of the four adjacent sub-pixels, wherein the particular input sample and the further input sample are associated with adjacent positions on the display device.
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Citations
15 Claims
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1. A method of mapping a four-primary input signal (IS) to sets (Pij) of four sub-pixels (RPij, GPij, BPij, WPij) of a display device (DD), wherein
the four-primary input signal (IS) comprises a sequence of input samples (Sij) each comprising a value for a first component (Rlij), a value for a second component (Glij), a value for a third component (Blij), and a value for a fourth component (Wlij), and wherein the sets (Pij) of the four sub-pixels comprise a first sub-pixel (RPij) for supplying light having a first primary color (R), a second sub-pixel (GPij) for supplying light having a second primary color (G), a third sub-pixel (BPij) for supplying light having a third primary color, and a fourth sub-pixel (WPij) for supplying fourth light having a fourth color (W), the first, second, third and fourth color all being different, and the fourth color being within the color gamut of the first, second, and third color, the method comprising sub-sampling (MAP) the input samples (Sij) of the four primary input signal (IS) (i) by assigning, via mapping, a first component (RI11), a second component (GI11), and a third component (BI11) of a particular input sample (S11) to the first (RP11), second (GP11) and third sub-pixel (BP11) of a particular set (P11) of four adjacent sub-pixels, respectively, and (ii) by assigning, via, mapping, a fourth component (WI12) of a further input sample (S12) to the fourth sub-pixel (WP11) of said same particular set (P11) of the four adjacent sub-pixels, wherein the particular input sample (S11) and the further input sample (S12) are associated with adjacent positions on the display device (DD), and wherein the further input sample (S12) is adjacent to, separate and distinct from, the particular input sample (S11) in the input samples (Sij) of the four primary input signal (IS).
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10. A system for mapping a four primary input signal (IS) to sets (Pij) of four sub-pixels (RPij, GPij, BPij, WPij) of a display device (DD), wherein
the four primary input signal (IS) comprises a sequence of input samples (Sij) each comprising a value for a first component (Rlij), a value for a second component (Glij), a value for a third component (Blij), and a value for a fourth component (Wlij), and wherein the sets (Pij) of the four sub-pixels comprise a first sub-pixel (RPij) for supplying light having a first primary color (R), a second sub-pixel (GPij) for supplying light having a second primary color (G), a third sub-pixel (BPij) for supplying light having a third primary color, and a fourth sub-pixel (WPij) for supplying fourth light having a fourth color (W), the first, second, third and fourth color all being different, and the fourth color being within the color gamut of the first, second, and third color, the system comprising a mapper (MAP) for sub-sampling the input samples (Sij) of the four primary input signal (DS) (i) by assigning, via the mapper, the first component (RI11), the second component (GI11), and the third component (BI11) of a particular input sample (S11) to the first (RP11), second (GP11) and third sub-pixel (BP1) of a particular set (P11) of four adjacent sub-pixels, respectively, and (ii) by assigning, via the mapper, the fourth component (WI12) of a further input sample (S12) to the fourth sub-pixel (WP11) of said same particular set (P11) of the four adjacent sub-pixels, wherein the particular input sample (S11) and the further input sample (S12) are associated with adjacent positions on the display device (DD), and wherein the further input sample (S12) is adjacent to, separate and distinct from, the particular input sample (S11) in the input samples (Sij) of the four primary input signal (IS).
Specification