Method for adjusting color temperature and device

1. A display device, comprising:

an acquisition unit, configured to acquire a present light intensity parameter value of each of N primary colors of light emitted by a light source of a display device, a present light intensity parameter value of a nth primary color of the N primary colors being indicative of the present light intensity of the nth primary color of light emitted by the light source of the display device, N being an integer greater than or equal to 3, n being an integer within [1, N];

a memory, configured to store programs;

a processor, configured to read the programs in the memory, and execute the step of determining a set light intensity parameter value of each of the N primary colors, according to the present light intensity parameter value of each of the N primary colors acquired by the acquisition unit and a pre-saved light intensity parameter value of each of the N primary colors, and execute the step of calculating the set light intensity parameter value of the n th primary color of the N primary colors by a first formula X nd =X np ×U, where X nd is the set light intensity parameter value of the n th primary color, X np is the pre-saved light intensity parameter value of the n th primary color, and U is the standard ratio; and

an adjustment unit, configured to respectively adjust the light intensity of each of the N primary colors according to the set light intensity parameter value of the N primary colors determined by the processor.

2. The device according to claim 1 , wherein

the processor is further configured to execute the steps of determining an attenuation degree of the n th primary color of the N primary colors according to a second formula X′ n =(X np −X nc )/X np , where X np is the pre-saved light intensity parameter value of the n th primary color, X nc is the present light intensity parameter value of the n th primary color, and X′ n is the attenuation degree of the n th primary color; and determining the standard ratio U within an interval [X n1c /X n1p , X n2c /X n2p ], where X n1c is a present light intensity parameter value of a primary color having a minimum attenuation degree, X n1p is a pre-saved light intensity parameter value of a primary color having a minimum attenuation degree, X n2c is a present light intensity parameter value of a primary color having a maximum attenuation degree, and X n2p is a pre-saved light intensity parameter value of a primary color having a maximum attenuation degree.

3. The device according to claim 2 , wherein the pre-saved light intensity parameter value of each of the N primary colors is equal to the maximum light intensity each primary color can actually achieve; and

the adjustment unit is further configured to: for a primary color having a present light intensity parameter value greater than its set light intensity parameter value, reduce the light intensity of the primary color to the set light intensity parameter value of the primary color; and for a primary color having a present light intensity parameter value less than its set light intensity parameter value, maintain the light intensity of the primary color at the present light intensity parameter value of the primary color.

4. The device according to claim 2 , wherein

the processor is further configured to execute the steps of using a present light intensity parameter value of an i th primary color, having a maximum attenuation degree, of the N primary colors as a standard light intensity parameter value of the i th primary color, i being an integer within [1, N]; and calculating the standard ratio U by a third formula U=X id /X ip , where X id is the standard light intensity parameter value of the i th primary color, and X ip is the pre-saved light intensity parameter value of the i th primary color.

5. The device according to claim 2 , wherein the pre-saved light intensity parameter value of each of the N primary colors is less than the maximum light intensity each primary color can actually achieve; and

the adjustment unit is further configured to: for a primary color having a present light intensity parameter value greater than its set light intensity parameter value, reduce the light intensity of the primary color; and for a primary color having a present light intensity parameter value less than its set light intensity parameter value, increase the light intensity of the primary color.

6. The device according to claim 5 , wherein

the adjustment unit is further configured to: for a primary color having a present light intensity parameter value greater than its set light intensity parameter value, reduce the light intensity of the primary color to the set light intensity parameter value of the primary color; and for a primary color having a present light intensity parameter value less than its set light intensity parameter value, increase the light intensity of the primary color to the set light intensity parameter value of the primary color if a driving signal which drives the primary color to reach the maximum light intensity the primary color can actually achieve is greater than a driving signal which drives the primary color to reach the set light intensity parameter value thereof, and increase the light intensity of the primary color to the maximum light intensity the primary color can actually achieve if a driving signal which drives the primary color to reach the maximum light intensity the primary color can actually achieve is less than a driving signal which drives the primary color to reach the set light intensity parameter value thereof.

7. A display device, comprising:

an acquisition unit, configured to acquire a present light intensity parameter value of each of N primary colors of light emitted by a light source of a display device, a present light intensity parameter value of a nth primary color of the N primary colors being indicative of the present light intensity of the nth primary color of light emitted by the light source of the display device, N being an integer greater than or equal to 3, n being an integer within [1, N];

a memory, configured to store programs;

a processor, configured to read the programs in the memory, and execute the step of determining a set light intensity parameter value of each of the N primary colors, according to the present light intensity parameter value of each of the N primary colors acquired by the acquisition unit and a pre-saved light intensity parameter value of each of the N primary colors; and

an adjustment unit, configured to calculate a variation ΔP n in a pulse width modulation (PWM) value of the n th primary color of the N primary colors by a fourth formula ΔP n =(X np −X nd )/K m , where X nd is the set light intensity parameter value of the n th primary color, X np is the pre-saved light intensity parameter value of the n th primary color, and K m is an adjustment coefficient which is indicative of a variation in the light intensity parameter of the n th primary color when the PWM value of the n th primary color is increased by 1, and respectively to adjust the PWM value of the n th primary color of the N primary colors according to the variation ΔP n , wherein the PWM value of the it mare color of the N primary colors being indicative of the magnitude of present controlling the light intensity of the nth primary color.

8. A display device, comprising:

an acquisition unit, configured to acquire a present light intensity parameter value of each of N primary colors of light emitted by a light source of a display device, a present light intensity parameter value of a nth primary color of the N primary colors being indicative of the present light intensity of the nth primary color of light emitted by the light source of the display device, N being an integer greater than or equal to 3, n being an integer within [1, N];

a memory, configured to store programs;

a processor, configured to read the programs in the memory, and execute the step of determining a pre-saved light intensity parameter value of each of the N primary colors as a set light intensity parameter value of each of the N primary colors in a case in which the pre-saved light intensity parameter value of each of the N primary colors is less than a maximum light intensity each primary color can actually achieve; and

an adjustment unit, configured to

adjust the light intensity of the N primary colors to Y % of the pre-saved light intensity parameter value of each of the N primary colors, wherein Y % of the pre-saved light intensity parameter value of each of the N primary colors is greater than the present light intensity parameter value of each of the N primary colors.

9. A method for adjusting color temperature, comprising:

acquiring, by an acquisition unit, a present light intensity parameter value of each of N primary colors of light emitted by a light source of a display device, a present light intensity parameter value of a nth primary color of the N primary colors being indicative of the present light intensity of the nth primary color of light emitted by the light source of the display device, N being an integer greater than or equal to 3, n being an integer within [1, N];

determining, by a processor, a standard ratio according to the present light intensity parameter value of each of the N primary colors and a pre-saved light intensity parameter value of each of the N primary colors, the standard ratio being indicative of an adjustment degree of the N primary colors;

calculating, by the processor, a set light intensity parameter value of the n th primary color of the N primary colors by a first formula X nd =X np ×U, where X nd is the set light intensity parameter value of the n th primary color, X np is a pre-saved light intensity parameter value of the n th primary color, and U is the standard ratio; and

respectively adjusting, by an adjustment unit, the light intensity of each of the N primary colors according to the set light intensity parameter value of the N primary colors.

10. The method according to claim 9 , wherein the determining, by a processor, a standard ratio according to the present light intensity parameter value of each of the N primary colors and the pre-saved light intensity parameter value of each of the N primary colors, comprises:

determining, by the processor, an attenuation degree of the n th primary color of the N primary colors according to a second formula X′ n =(X np −X nc )/X np , where X np is the pre-saved light intensity parameter value of the n th primary color, X nc is the present light intensity parameter value of the n th primary color, and X′ n is the attenuation degree of the n th primary color; and

determining, by the processor, the standard ratio U within an interval [X n1c /X n1p , X n2c /X n2p ], where X n1c is a present light intensity parameter value of a primary color having a minimum attenuation degree, X n1p is a pre-saved light intensity parameter value of a primary color having a minimum attenuation degree, X n2c is a present light intensity parameter value of a primary color having a maximum attenuation degree, and X n2p is a pre-saved light intensity parameter value of a primary color having a maximum attenuation degree.

11. The method according to claim 10 , wherein the pre-saved light intensity parameter value of each of the N primary colors is equal to the maximum light intensity each primary color can actually achieve; and

the respectively adjusting, by an adjustment unit, the light intensity of each of the N primary colors according to the set light intensity parameter value of the N primary colors, comprises:

for a primary color having a present light intensity parameter value greater than its set light intensity parameter value, reducing, by the adjustment unit, the light intensity of the primary color to the set light intensity parameter value of the primary color; and

for a primary color having a present light intensity parameter value less than its set light intensity parameter value, maintaining, by the adjustment unit, the light intensity of the primary color at the present light intensity parameter value of the primary color.

12. The method according to claim 10 , wherein the determining, by the processor, the standard ratio U within an interval [X n1c /X n1p , X n2c /X n2p ], comprises:

using, by the processor, a present light intensity parameter value of an i th primary color, having a maximum attenuation degree, of the N primary colors as a standard light intensity parameter value of the i th primary color, i being an integer within [1, N]; and

calculating, by the processor, the standard ratio U by a third formula U=X id /X ip , where X id is the standard light intensity parameter value of the i th primary color, and X ip is the pre-saved light intensity parameter value of the i th primary color.

13. The method according to claim 10 , wherein the pre-saved light intensity parameter value of each of the N primary colors is less than the maximum light intensity each primary color can actually achieve; and

the respectively adjusting, by an adjustment unit, the light intensity of each of the N primary colors according to the set light intensity parameter value of the N primary colors, comprises:

for a primary color having a present light intensity parameter value greater than its set light intensity parameter value, reducing, by the adjustment unit, the light intensity of the primary color; and

for a primary color having a present light intensity parameter value less than its set light intensity parameter value, increasing, by the adjustment unit, the light intensity of the primary color.

14. The method according to claim 13 , wherein

the reducing, by the adjustment unit, for a primary color having a present light intensity parameter value greater than its set light intensity parameter value, the light intensity of the primary color, comprises: for a primary color having a present light intensity parameter value greater than its set light intensity parameter value, reducing, by the adjustment unit, the light intensity of the primary color to the set light intensity parameter value of the primary color; and

the increasing, by the adjustment unit, for a primary color having a present light intensity parameter value less than its set light intensity parameter value, the light intensity of the primary color, comprises: for a primary color having a present light intensity parameter value less than its set light intensity parameter value, by the adjustment unit, increasing the light intensity of the primary color to the set light intensity parameter value of the primary color if a driving signal which drives the primary color to reach the maximum light intensity the primary color can actually achieve is greater than a driving signal which drives the primary color to reach the set light intensity parameter value thereof, and increasing the light intensity of the primary color to the maximum light intensity the primary color can actually achieve if a driving signal which drives the primary color to reach the maximum light intensity the primary color can actually achieve is less than a driving signal which drives the primary color to reach the set light intensity parameter value thereof.

15. A method for adjusting color temperature, comprising:

acquiring, by an acquisition unit, a present light intensity parameter value of each of N primary colors of light emitted by a light source of a display device, a present light intensity parameter value of a nth primary color of the N primary colors being indicative of the present light intensity of the nth primary color of light emitted by the light source of the display device N being an integer greater than or equal to 3, n being an integer within [1, N];

determining, by a processor, a set light intensity parameter value of each of the N primary colors, according to the present light intensity parameter value of each of the N primary colors and a pre-saved light intensity parameter value of each of the N primary colors; and

calculating, by an adjustment unit, a variation ΔP n in a pulse width modulation (PWM) value of the n th primary color of the N primary colors by a fourth formula ΔP n =(X np −X nd )/K m , where X nd is a set light intensity parameter value of the n th primary color, is a pre-saved light intensity parameter value of the n th primary color, and K m is an adjustment coefficient which is indicative of a variation in a light intensity parameter of the n th primary color when the PWM value of the n th primary color is increased by 1,

respectively adjusting, by the adjustment unit, the PWM value of the n th primary color of the N primary colors according to the variation ΔP n , wherein e PWM value of the nth primary color of the N primary colors being indicative of the magnitude of present controlling the light intensity of the nth primary color.

16. A method for adjusting color temperature, comprising:

acquiring, by an acquisition unit, a present light intensity parameter value of each of N primary colors of light emitted by a light source of a display device, a present light intensity parameter value of a nth primary color of the N primary colors being indicative of the present light intensity of the nth primary color of light emitted by the light source of the display device, N being an integer greater than or equal to 3, n being an integer within [1, N];

reading, by a processor, programs in a memory;

determining, by a processor, a pre-saved light intensity parameter value of each of the N primary colors as a set light intensity parameter value of each of the N primary colors, in a case in which the pre-saved light intensity parameter value of each of the N primary colors is less than a maximum light intensity each primary color can actually achieve; and

adjusting, by an adjustment unit, a light intensity of the N primary colors to Y % of the set light intensity parameter value of each of the N primary colors, wherein Y % of the set light intensity parameter value of each of the N primary colors is greater than the present light intensity parameter value of each of the N primary colors.