2D Image Sensor Partial Reading for Reduced Readout Time

The patent divides the two-dimensional image sensor into multiple independently controllable regions or blocks. The sensor controller can selectively activate and read output values from specific regions based on the imaging target position, rather than reading all light receiving units. This segmentation allows the system to cover the required imaging area while significantly reducing the number of units that need to be read at any given time, thus reducing reading time.

The patent implements partial reading action by configuring the sensor controller to read output values from only the necessary portion of light receiving units corresponding to the actual imaging target. Instead of performing excessive action by reading all units, the system dynamically adjusts the reading scope to match the required coverage, achieving optimal balance between area coverage and reading time for different imaging scenarios.

The patent designs the two-dimensional image sensor and its controller as a universal platform capable of performing multiple functions including colorimetry, image quality assessment, misalignment detection, and paper edge detection. The sensor controller is configured to adaptively adjust the imaging parameters and reading strategies based on the specific function required, allowing a single device to serve multiple purposes without requiring separate specialized sensors for each function.

The patent implements dynamic control where the sensor controller can dynamically adjust the imaging area, reading rate, and processing priority based on the current function being performed. For example, during colorimetry a different reading strategy is used compared to misalignment detection. This dynamic adaptability allows the system to handle multiple functions efficiently while managing control complexity through context-aware parameter adjustment.