Parallel CRC Logic Using Masking and Parity for Small Footprint

The patent divides the CRC calculation into multiple parallel segments or pipelines. Each pipeline processes a portion of the input data concurrently using simplified logic, replacing sequential exclusive-OR operations with parallel bit-mask and parity operations. This segmentation enables simultaneous processing of multiple data bits, significantly reducing overall processing time while maintaining error detection reliability.

The patent substitutes traditional mechanical sequential logic operations (exclusive-OR gates processing bits one by one) with optimized bitwise operations (bit-mask and parity operations) that can execute in parallel. This substitution transforms the computational mechanism from sequential to parallel execution, reducing processing time without sacrificing the mathematical correctness of CRC error detection.

By segmenting the CRC calculation into parallel pipelines with simplified logic stages, the patent reduces the memory required for storing intermediate calculation states. Each pipeline segment uses minimal local memory for its specific operation, and results are combined at the end, rather than requiring large memory buffers for sequential processing of all data bits.

The patent uses bit-mask operations that create and manipulate compact binary representations of data segments. Instead of storing large amounts of intermediate computational data in memory, the bit-mask approach creates compact bitwise copies and transformations that can be processed in-place, significantly reducing memory consumption while preserving error detection capability.

The patent replaces sequential mechanical logic operations with parallel bitwise operations. The bit-mask and parity operations maintain the mathematical equivalence of traditional CRC calculations, ensuring calculation accuracy, while their parallel execution capability dramatically increases processing speed. The substitution preserves the polynomial division mathematics of CRC while optimizing the implementation mechanism.

The patent transitions from one-dimensional sequential bit processing to multi-dimensional parallel processing by operating on multiple data bits simultaneously using bitwise operations. This dimensional change allows the system to process entire words or blocks of data in parallel while maintaining the mathematical integrity of the CRC calculation, achieving both accuracy and speed.