Display Driver IC Clock Pattern Generation for Power Saving

The patent applies preliminary action by pre-generating multiple clock patterns representing different time periods (e.g., 12-hour cycles) and storing them in a buffer memory before display. Instead of processing real-time image data continuously, the system prepares all necessary time display patterns in advance, then simply selects and displays the appropriate pre-generated pattern based on current time. This eliminates continuous heavy processing during display operation, significantly reducing power consumption while maintaining real-time information display capability.

The patent segments the time display data into multiple discrete clock patterns, each representing a specific time period or hour. Instead of storing complete continuous image data, the system divides the time display into discrete segments (e.g., 12 separate clock patterns for 12 hours). Each segment contains only the necessary graphical elements for that specific time period. This segmentation allows efficient storage where each segment is much smaller than complete real-time image data, reducing overall storage space requirements while maintaining the ability to display real-time information.

The patent implements self-service by enabling the display driver to autonomously select and display appropriate pre-generated clock patterns without requiring continuous intervention from the central processing unit. The display driver independently manages the selection of time-display patterns based on time information from a timer or real-time clock, eliminating the need for the CPU to remain active or continuously process display data. This allows the CPU to enter deep sleep mode while the display driver maintains its own low-power operation, achieving effective power saving across the entire system.