Method and system of showing colors for mosaic display device

Patent metadata

Field	Value
Publication number	US-9978338-B2
Application number	US-201615108300-A
Country	US
Kind code	B2
Filing date	Apr 29, 2016
Priority date	Feb 1, 2016
Publication date	May 22, 2018
Grant date	May 22, 2018

Abstract

The present invention discloses a method and a system of showing colors for a mosaic display device, in which sending the reference control signal to the first LCD to control the first pixel unit in the first LCD to show the reference colors; determining the reference three stimulus values of the reference colors; determining the calibration three stimulus values closest to the reference three stimulus values; and then sending the calibration control signal to the second LCD to control the second pixel unit in the second LCD to show the calibration colors corresponding to the calibration three stimulus values. Accordingly, the consistency calibration process of the color display for different LCDs is accomplished, and thus, to make the display result of the second LCD and the display result of the first LCD come close to the same.

First claim

What is claimed is:

1. A method of showing colors for a mosaic display device, and the mosaic display device comprises a first liquid crystal display and a second liquid crystal display, and the first liquid crystal display comprises a first pixel unit, and the second liquid crystal display comprises a second pixel unit corresponding to the first pixel unit, wherein the method comprises:
obtaining original three stimulus values of original colors of a first group shown by the first pixel unit;
sending a reference control signal to the first liquid crystal display, and the reference control signal is employed to control the first pixel unit to show a reference color corresponding thereto;
determining reference three stimulus values of the reference color according to the original three stimulus values of the original colors of the first group;
obtaining original three stimulus values of original colors of a second group shown by the second pixel unit;
determining all shown three stimulus values of the colors shown by the second pixel unit according to the original three stimulus values of the original colors of the second group;
determining calibration three stimulus values of the second pixel unit according to the reference three stimulus values and the all shown three stimulus values, wherein the calibration three stimulus values are shown three stimulus values in the all shown three stimulus values, of which a difference value with the reference three stimulus values is the smallest;
determining calibration colors corresponded with the reference three stimulus values;
sending a reference control signal to the second liquid crystal display, and the reference control signal is employed to control the second pixel unit to show the calibration colors.

2. The method according to claim 1 , wherein the step of determining reference three stimulus values of the reference color according to the original three stimulus values of the original colors of the first group comprises:
querying first original three stimulus values, second original three stimulus values and third original three stimulus values in the original three stimulus values of the original colors of the first group, and the first original three stimulus values are three stimulus values of the first original color in the original colors of the first group, and the second original three stimulus values are three stimulus values of the second original color in the original colors of the first group, and the third original three stimulus values are three stimulus values of the third original color in the original colors of the first group, and the first original color has the same R component gray value r of the reference color, and the second original color has the same G component gray value g of the reference color, and the third original color has the same B component gray value b of the reference color;
according to the first original three stimulus values, the second original three stimulus values and the third original three stimulus values, the reference three stimulus values are calculated with the formula (1):

[

X
c

Y
c

Z
c

]

=

[

X
r

Y
r

Z
r

]

+

[

X
g

Y
g

Z
g

]

+

[

X
b

Y
b

Z
b

]

(
1
)

(X c , Y c , Z c ) are the reference three stimulus values, (X r , Y r , Z r ) are the first original three stimulus values, (X g , Y g , Z g ) are the second three stimulus values, (X b , Y b , Z b ) are the third three stimulus values.

3. The method according to claim 2 , wherein the step of determining all shown three stimulus values of the colors shown by the second pixel unit according to the original three stimulus values of the original colors of the second group comprises:
querying fourth original three stimulus values, fifth original three stimulus values and sixth original three stimulus values in the original three stimulus values of the original colors of the second group, and the fourth original three stimu

Assignees

• Shenzhen China Star Optoelect
• Shenzhen China Star Optoelect

Inventors

• Wu Jinjun

Classifications

• G09G5/02 Primary

  characterised by the way in which colour is displayed {(details of colour display specific for CRTs G09G1/28; specific for flat matrix panels other than liquid crystal displays G09G3/2003; specific for liquid crystal displays G09G3/3607)} · CPC title

• G02F1/1336

  Illuminating devices · CPC title

• G09G3/3611

  Control of matrices with row and column drivers · CPC title

• G09G3/3406

  Control of illumination source (illumination devices structurally associated with liquid crystal cells G02F1/1336) · CPC title

• H04N9/73

  Colour balance circuits, e.g. white balance circuits or colour temperature control (camera processing pipelines for colour balance H04N23/88) · CPC title