Pipelined DNA Memory Hierarchy for Random Access

The patent segments the DNA memory system into distinct functional modules: a library of address-specific probe molecules, a pipeline architecture with multiple processing stages, and separate functional units for strand binding, separation, and transfer. Each module performs a specific function, allowing the system to achieve random access through coordinated operation of simplified components rather than complex monolithic structures.

The patent prepares probe molecules for all possible address values in advance and stores them in a library. When random access is needed, the appropriate pre-prepared probe is selected and introduced to the system without requiring on-the-fly synthesis. This preliminary preparation eliminates the need for complex real-time probe synthesis machinery, significantly reducing system complexity while maintaining full random access capability.

The patent implements a pipelined architecture where multiple operations occur simultaneously in different stages. While one DNA strand is being bound to its address probe in stage 1, another strand is being separated in stage 2, and a third is being transferred in stage 3. This continuous parallel processing eliminates idle time between operations, maintaining high access speed while reducing the effective processing time per instruction through overlapping execution.

The patent divides the random access operation into discrete sequential stages: probe introduction and binding, strand separation, and product transfer. Each stage is optimized independently and can be executed in parallel with other stages processing different data. This segmentation allows the system to achieve high throughput by processing multiple instructions through different stages simultaneously, reducing overall processing time.

The patent introduces address-specific probe molecules as intermediaries between the stored DNA strands and the retrieval system. Each probe is complementary to a specific address sequence on the target DNA strand. When a probe is introduced, it selectively binds only to strands with matching addresses, enabling rapid identification and isolation of specific data without requiring sequential scanning or complex decoding of the entire storage population. This intermediary mechanism maintains massive storage capacity while enabling efficient random access.

The patent pre-encodes address sequences into the DNA strands during the storage phase, and pre-synthesizes a library of complementary probe molecules for all possible addresses. This preliminary structuring of both stored data and retrieval tools enables direct, efficient access to any stored information without requiring time-consuming search or decoding operations, thereby maintaining high storage capacity while dramatically improving data access efficiency.

The patent synthesizes all necessary probe molecules in advance during system initialization or batch preparation, organizing them by address sequence into a library. This preliminary synthesis eliminates the need for expensive on-demand probe manufacturing during operational access cycles. The pre-prepared probes can be stored indefinitely and reused repeatedly, converting a variable operational cost into a fixed upfront investment, thereby maintaining high access accuracy through consistent probe quality while dramatically reducing ongoing operational costs.

The patent creates multiple identical copies of each address-specific probe molecule and stores them in the library. When access is needed, a copy is used rather than synthesizing a new probe each time. This copying approach maintains access accuracy by using verified, high-quality probe sequences while reducing operational costs by amortizing the synthesis expense across many reuse cycles. The system effectively pays once to create master templates and then uses inexpensive copies for all subsequent operations.