Dedicated Bit Access Circuit for Faster Low-Energy Memory Reads

The patent introduces a dedicated bit access circuit as an intermediary component between the processor and memory. This circuit receives a bit position pointer and automatically performs the necessary operations (byte selection, bit extraction using masks, and value retrieval) without requiring processor intervention. The intermediary circuit handles the complexity of bit-level access, allowing the processor to simply provide the bit position and receive the result in a single cycle.

The patent replaces the software-based mechanical process (multiple processor cycles executing mask operations and bit extraction) with a hardware-based electronic system. The dedicated circuit uses electronic logic operations (AND gates for masking, shift operations) to extract bits directly in hardware, substituting the sequential software execution model with parallel hardware evaluation that completes in one processor cycle.

The dedicated bit access circuit serves as an energy-efficient intermediary that handles bit extraction operations. By offloading these operations from the processor, the system avoids the high energy cost of multiple processor cycles. The circuit performs the necessary logic operations (masking, shifting, and bit extraction) using minimal power compared to full processor execution.

The patent extracts the bit access functionality from the processor and implements it as a separate dedicated circuit. This extraction removes the energy-intensive processor operations (multiple cycles of mask calculation, byte access, and bit extraction) and replaces them with a specialized low-power hardware component that performs only the necessary bit-level operations.

The dedicated bit access circuit acts as an intermediary that consolidates multiple operations into a single hardware unit. Instead of the processor performing sequential tests and updates, the intermediary circuit receives the bit position pointer and simultaneously performs byte selection, mask application, and bit extraction in parallel hardware operations, completing the task in one processor cycle.

The system performs preliminary actions by pre-calculating and storing byte offsets in a lookup table. When bit access is needed, the circuit quickly retrieves the pre-computed byte offset based on the bit position pointer, eliminating the need for runtime calculations. This preliminary preparation of offset values accelerates the access process significantly.