Correlation Circuit for Image Sensor Register Updates

The patent implements periodic action by using dedicated data transfer periods interspersed within frame intervals. During these periodic data transfer windows, the narrow data bus is utilized to send control register updates. This allows the system to maintain narrow bus width while ensuring sufficient data throughput by concentrating transfers in periodic intervals rather than requiring continuous high-speed capability.

The patent applies preliminary action by preparing and queuing control register update data during the image capture process. The processor circuit identifies which control registers need updating and prepares the update data in advance, so that when the periodic data transfer period arrives, the updates can be transmitted immediately without delaying the frame rate. This eliminates the need to wait for complete frame processing before initiating register updates.

The patent extracts only the essential control register updates that are necessary for current frame processing from the complete set of available control registers. The processor circuit selectively identifies and queues only those register updates that are critical for the current operational context, rather than transmitting updates to all control registers. This reduction in data volume allows the narrow data bus to handle the increased functionality without being overloaded.

The patent merges multiple control register update operations into single batched transactions. Instead of transmitting individual register updates separately over the serial data bus, the system combines multiple updates into consolidated data transfer sequences. This merging approach reduces the total number of serial communication transactions required, effectively increasing the throughput capability of the narrow serial bus without requiring higher individual bit rates.