Abstract: Disclosed is a method for collection and correction of a display unit. The method includes: placing a camera in front of a display unit to be corrected; collecting RGB brightness data of the display unit to be corrected to obtain an original brightness matrix; placing a standard brightness plane in front of a lens of the camera; obtaining a final brightness correction matrix of the camera according to the collected RGB brightness data of the standard brightness plane; multiplying the original brightness matrix by the final brightness correction matrix to obtain a restored real brightness matrix; and performing brightness correction on the real brightness matrix to obtain a corrected brightness matrix. A plurality of the display units corrected by the present disclosure are completely the same in terms of absolute brightness value, and positions of the display units can be arbitrarily changed with each other on the screen.

Abstract: Disclosed is a method for collection and correction of a display unit. The method includes: placing a camera in front of a display unit to be corrected; collecting RGB brightness data of the display unit to be corrected to obtain an original brightness matrix; placing a standard brightness plane in front of a lens of the camera; obtaining a final brightness correction matrix of the camera according to the collected RGB brightness data of the standard brightness plane; multiplying the original brightness matrix by the final brightness correction matrix to obtain a restored real brightness matrix; and performing brightness correction on the real brightness matrix to obtain a corrected brightness matrix. A plurality of the display units corrected by the present disclosure are completely the same in terms of absolute brightness value, and positions of the display units can be arbitrarily changed with each other on the screen.

Abstract: A display driver circuitry with permutation and superposition gray-level control comprises a gray-level controller. The controller may comprise a permutation and superposition adder configured to divide N-bit gray-level data G into M most significant bits, serving as a superposition reference GH, and (N?M) least significant bits, serving as a superposition increment GL, and to superpose superposition values Xi onto GH to derive pieces of scan data Gi for S scan operations; an overflow bit setting unit configured to set an overflow bit F; and an output unit configured to output the scan data Gi. A display driven this way has an improved refreshing frequency with the same gray-level reproduction ability as PWM-based schemes. Further, the duration of each scan operation, or scan period, is constant, resulting in convenience in software implementations. Furthermore, the pulse width representative of the gray-level value is determined by superposition of the scan operations.

Abstract: A display driver circuitry with permutation and superposition gray-level control comprises a gray-level controller. The controller may comprise a permutation and superposition adder configured to divide N-bit gray-level data G into M most significant bits, serving as a superposition reference GH, and (N-M) least significant bits, serving as a superposition increment GL, and to superpose superposition values Xi onto GH to derive pieces of scan data Gi for S scan operations; an overflow bit setting unit configured to set an overflow bit F; and an output unit configured to output the scan data Gi. A display driven this way has an improved refreshing frequency with the same gray-level reproduction ability as PWM-based schemes. Further, the duration of each scan operation, or scan period, is constant, resulting in convenience in software implementations. Furthermore, the pulse width representative of the gray-level value is determined by superposition of the scan operations.