Microscope Light Source Current Splitting for Pixel-Level Timing

The control signal is divided into two parts: most significant bits (MSBs) controlling the current source and least significant bits (LSBs) controlling the small signal generator. This segmentation allows the fast LSB path to handle time-critical adjustments while the MSB path handles slower, less time-sensitive control, thereby reducing overall latency while maintaining adaptability.

The small signal generator acts as an intermediary component that receives LSB control signals and generates fast-response current adjustments independently of the digital controller's propagation delay. This intermediary path bypasses the latency bottleneck of the digital controller for time-critical control functions.

The system dynamically adjusts the light source current on a pixel-by-pixel basis by combining the coarse control from the digital controller with fine-grained, high-speed adjustments from the small signal generator. This dynamic two-level control enables precise timing for each pixel while maintaining the ability to adapt to different imaging conditions in real-time.

The system performs preliminary coarse current setting via the digital controller before the fast LSB-driven fine adjustments take effect. This preliminary action establishes the baseline current level, allowing the subsequent fast-response control to focus solely on precise timing adjustments for each pixel.