Patent ID: 7995021

Claim:
A method to perform anytime an optimal adaptation of gamma curve correction data and phase table data to any passive-matrix color LCD display that is responding to pulse width modulation and frame rate control (PWM/FRC) to generate gray scale images is comprising: providing an input device to input gray data and phase table data into same memory elements, a processor, a passive-matrix color LCD color display based on primary colors that is responding to pulse width modulation and frame rate control (PWM/FRC) to generate gray scale images, a non-volatile memory to store optimized gamma data, and said same memory elements for storing gamma curve correction data and phase table data, indicating phases in the sequence of gradation levels, in same memory elements, which can be updated anytime; defining number of gray levels and number of frame rate control (FRC) periods; mapping a programmable gamma curve; providing gray level values for every FRC period and for every primary color used as input into said input device, wherein said gray level values are to be adapted to said color display; initiating storing of said gray level values and phase table data in said same memory elements in order to achieve a programmable assignment of gray scale PWM for each FRC; generating an image by said color LCD using PWM with FRC control and testing quality of display; and repeating steps above if quality of display is to be improved further.