Display Gamma Lookup Tables for Nonlinear Luminance Control

The patent segments the luminance range into multiple sections (first luminance section, second luminance section, etc.) with different characteristics. Each section has its own predetermined offsets stored in memory. This segmentation allows the system to use simple linear interpolation within each section while maintaining overall luminance accuracy across the full range, resolving the contradiction between hardware simplicity and luminance precision.

The patent changes the parameter approach by introducing luminance-section-specific offsets that are added to the linearly interpolated gamma voltages. Instead of using a single linear interpolation for all luminance levels, the system adjusts the voltage parameters differently for each luminance section, compensating for nonlinearities while keeping the base interpolation method simple and hardware-efficient.

The patent divides the gamma voltage generation process into two stages: first, simple linear interpolation to generate base gamma voltages (low calculation complexity), and second, addition of predetermined offsets specific to each luminance section (maintains accuracy). This segmentation resolves the contradiction by keeping the main calculation path simple while adding a correction layer for precision.

The patent introduces predetermined offsets as an intermediary element between the linear interpolation result and the final gamma voltage. These offsets act as a mediator that corrects the inaccuracies introduced by linear interpolation without requiring complex nonlinear calculation, thus maintaining both low calculation complexity and high luminance accuracy.

The patent extracts only the essential correction data (predetermined offsets for each luminance section) from the complete gamma lookup tables and stores only these extracted values in memory. The full gamma lookup tables are not stored; instead, the system generates gamma voltages through linear interpolation and applies the extracted offsets. This extraction approach maintains luminance accuracy while dramatically reducing memory requirements and hardware size.

The patent uses a simplified copy of the gamma correction information - specifically, only the offset values for each luminance section are stored in memory, rather than complete gamma lookup tables. This partial copying approach provides sufficient correction capability for accurate luminance control while occupying minimal hardware memory resources.