Polarity compensation device and method
AssigneeHimax Technologies Limited
InventorTung-Ying Wu
Life of this patent
Estimating the term…
Abstract
A polarity compensation device and a polarity compensation method are provided. The polarity compensation device includes a variance calculation circuit and a compensation calculation circuit. The variance calculation circuit calculates a difference value between current sub-pixel data and previous sub-pixel data in the same frame period, wherein the current sub-pixel data and the previous sub-pixel data belong to the same data line of a display panel. The compensation calculation circuit converts the difference value into a function value. The compensation calculation circuit decides to increase or decrease the current sub-pixel data by the function value according to a polarity corresponding to the same frame period, so as to generate compensated sub-pixel data.
Claims7
A polarity compensation device, comprising:
- a variance calculation circuit, configured to calculate a difference value between current sub-pixel data and previous sub-pixel data in a same frame period, wherein the current sub-pixel data and the previous sub-pixel data belong to a same data line of a display panel;
- and
- a compensation calculation circuit, coupled to the variance calculation circuit to receive the difference value and configured to convert the difference value to a function value, wherein the compensation calculation circuit determines whether to increase or decrease the current sub-pixel data by the function value according to a polarity corresponding to the same frame period, so as to generate compensated sub-pixel data wherein the compensation calculation circuit converts the difference value to the function value by applying an equation FV=|DV|*|DV|/GLmax, wherein FV represents the function value, DV represents the difference value, and GLmax represents a grayscale resolution.
A polarity compensation method, comprising:
- calculating, by a difference calculation circuit, a difference value between current sub-pixel data and previous sub-pixel data in a same frame period, wherein the current sub-pixel data and the previous sub-pixel data belong to a same data line of a display panel;
- converting, by a compensation calculation circuit, the difference value to a function value;
- and
- determining, by the compensation calculation circuit, whether to increase or decrease the current sub-pixel data by the function value according to a polarity corresponding to the same frame period to generate compensated sub-pixel data, wherein the step of converting the difference value to the function value comprises:
- applying, by the compensation calculation circuit, an equation FV|DV|*|DV|/GLmax to convert the difference value to the function value, wherein FV represents the function value, DV represents the difference value, and GLmax represents a grayscale resolution.
Dependencies are inferred from the claim text.