Read-Only Memories TRIZ Cases

Shared redundant bit and word lines cut repair area in 3D memory while replacing defective lines through common buffers and decoders.

Position-based initial and valley voltage selection improves NAND page read accuracy under charge drift and cuts correction loops.

Internal EPI timers and tables flag overlong erase-to-program gaps, helping controllers protect flash data retention with less timing overhead.

Selective pass masking by threshold group cuts non-volatile memory verification time while avoiding unnecessary masking at the highest level.

A higher program kick voltage on slow 3D NAND word lines evens programming speed and reduces over-programming errors.

Different threshold voltages on outer and inner string select transistors equalize 3D NAND erase speed and reduce GIDL current.

By judging NAND string on/off states instead of output current intensity, this 3D memory search case improves match accuracy over time.

Different word-line biases across NAND sub-blocks balance erase speed and retention stress to improve threshold voltage uniformity.

An RRAM OTP array uses lock-bit control and smart write programming to store private codes once while preventing later rewrites.

Vertical synapse stacking boosts neural array density while improving reliability, selective programming, and CMOS integration.

An internal margin read test circuit uses sensing and margin currents to check flash read margins faster without external voltage stabilization.

Distinct gate voltages for word line and select gate drivers reduce gate-drain stress, avoid tunneling effects, and preserve memory driver performance.

Dividing a memory array into two cell regions with shorter word line connections lowers resistance and preserves read and program speed.

Neighbor-block read steps discharge channel hole potential during NAND erase, cutting soft erase disturb with minimal timing impact.

Staggered program verify timing across NAND dies cuts peak current without throttling write throughput or risking data integrity.

By sweeping control-signal phase against the clock edge, the controller finds a reliable CA bus sampling window for stable memory transfers.

After power-on, the controller estimates equivalent power-off and retention duration to reset read voltages and improve memory read accuracy.

Voltage-driven ion exchange between reservoir and channel layers enables dense 3D nonvolatile memory with efficient resistance switching.

Partial erase-verify after suspend events adjusts erase pulse duration to limit over-erase and protect memory data integrity.

Proactive cell recovery identifies error patterns and restores threshold margins so NOR flash boot data stays within ECC correction capacity.

Staggered page buffer activation cuts peak current and simplifies memory routing, enabling wider lines, smaller layouts, and faster read/write.

Shared bitlines and wordlines cut sub-wordline driver and sense amplifier area, improving 3D memory integration without read delays.

When 0 bits dominate, inversion encoding cuts programmed bits in eFlash, reducing write time, pump demand, and cell stress.

Offset current subtraction lets OTP readout detect cell current accurately while reducing clamp area, power use, and timing complexity.

Turning off dummy cells before select transistors limits electron migration and self-boosting errors in dense NAND memory strings.

After verify success, adjacent-wordline data sets bit-line precharge for a second program step that stabilizes threshold distribution.

Selective refresh of short-retention memory cells cuts boot-up time while preserving data reliability through targeted error correction.

Programmed-cell counts drive dynamic read-offset updates in flash memory, reducing charge-loss read errors and error recovery time.

Spacer-shaped self-aligned select gates cut CD misalignment and Ir1 variation in split-gate flash cells, improving read margin.

Shifting time tag acquisition away from edge word lines cuts read disturb and failed bit count spikes in NAND memory.

AI-guided threshold targeting uses neighboring cell data to curb NAND inter-cell interference and extend flash endurance without added read latency.

Smart verify sets the initial 3D NAND programming voltage, while bitscan updates later wordlines to avoid overprogramming and errors.

Adaptive block-level read voltages improve non-volatile memory accuracy despite threshold shifts, without full per-block complexity.

Counter-phase charge sharing between memory wordlines reuses stored charge to boost programming voltage and cut energy use.

Shared programming and read control enables real-time anti-fuse state verification without separate test hardware, improving accuracy and speed.

Adjusts word line read timing and ramping by cell cycling history to stabilize Vth, reduce read disturb, and improve NAND read speed.

Critical data is steered away from weak word lines, cutting read latency and reducing timeout and boot failure risk.

Multiple memory elements per PUF cell hide which element stores the bit, improving resistance to cloning and tampering.

Zone-based access control blocks mutable code during boot, then locks the immutable zone after phase transition to prevent code injection.

Periodic read-voltage scans keep memory blocks in a transient VT state, cutting bit errors and read latency after idle periods.

Phased pass-voltage changes on adjacent word lines curb back-pattern read interference and preserve 3D NAND sensing reliability.

Shared SWL and bit-line decoding cuts capacitive loading and programming power in high-voltage OTP memory while protecting unselected transistors.

Continuous active regions and dummy gate layers remove LOD-driven transistor variation while shrinking anti-fuse bit cell area.

Equalizing bit-line pairs between memory operations cuts double-pumping pre-charge power while preserving stable cell operation.

Controlled X-ray irradiation erases non-volatile memory data automatically without booting devices or destroying usable hardware.

Stepped data line bias and pillar boosting narrow memory-cell threshold distributions while reducing analog programming latency and circuit complexity.

A two-stage bit line pre-charge scheme starts recharge before read completion, then finishes it after to limit coupling and protect data integrity.

A stacked CFET ROM stores two bits independently in top and bottom transistors, shrinking bit cell area and cutting bit line delay.

Top-down flash cell column programming and corrective read voltages reduce parasitic disturb and preserve multi-level charge separation.

Adaptive word line precharge and boost voltage control improves memory programming speed while limiting voltage fluctuation and transistor degradation.

A semiconductor memory device adjusts bit line voltage during program loops to improve threshold voltage distribution.

Dual program operations optimize data storage and recovery in flash memory devices, enhancing performance without increasing buffer size.

A data writing method adds redundant data to a buffer during shutdown commands to ensure stable storage in triple-level cell flash memory.

Reference cells compensate for temperature-induced resistance variations in phase change materials, ensuring accurate data state determination.

Alternating erase operations between two control nodes balances wear distribution, doubling lifespan against rapid degradation from repeated cycling.

A symmetrical latch design with matched transmission gates and inverters enables efficient data storage in FAMOS-based EPROM memory cells.

A precharge control circuit manages voltage levels across word lines to enhance boosting efficiency of non-selection cell strings.

Interleaved write windows offset peak currents to maintain system specifications while increasing operating speed.

Modified NAND memory architecture uses charge sharing techniques for read operations, reducing power consumption and increasing density.

A NAND flash memory device applies program voltage to specific word line subsets during erase cycles.

A memory device uses segmented programming to control threshold voltage distributions across source select transistors.

A flash memory voltage generation circuit outputs incremental step pulses before internal power reaches maximum levels.

Segmenting memory strings reduces word line charging cycles, improving read speed while lowering power consumption.

A controller determines row-based programming parameters for NAND flash memory using physical device characteristics to set optimized write settings.

Adjusting memory cell verify levels during programming to compensate for charge perturbations from neighboring cells.

Segmented sensing circuitry shares charge between two nodes to widen the sense margin, reducing fail bit counts in quad-level cell memory arrays.

A nonvolatile memory design routes bitlines in a single direction from the cell array to consolidate voltage control circuits.

A refresh control circuit selects between counter-generated and external addresses to vary the row address sequence in semiconductor memory devices.

Merging multiple voltage generators into a single unit reduces memory device area and power consumption while maintaining wordline driving capability.

Control logic segments programming into foggy and fine phases, releasing the buffer after foggy programming to reduce retention costs.

Control die performs data shaping before error correction coding, reducing memory cell wear while maintaining high reliability.

Detects charge disturb in unprogrammed flash memory cells by comparing voltage thresholds against a reference level.

Adaptive pulse feedback adjusts programming parameters based on real-time cell state measurements, resolving trade-offs between reliability and device stress.

A 1TnR memory cell arrangement connects multiple resistive elements to a single drive element for efficient addressing.

A semiconductor control circuit generates a busy signal to prevent concurrent command execution.

Sequential page latching reduces cell interference and improves reliability while maintaining high storage capacity.

A complementary decoder circuit uses n-type and p-type transistors to optimize signal propagation paths in memory arrays.

A ROM keeper transistor uses a dedicated control signal to maintain electrical line voltage levels.

A semiconductor device allows a common source line to float during verify phases to reduce power consumption.

A nonvolatile memory device applies high voltage to the drain via a switch, reducing circuit size by avoiding large switches for high drain currents.

A drive-sense circuit with a voltage amplifier generates digital signals from load voltages for impedance detection.

Memory controller adjusts read voltage and application time to retrieve data from high-resistance word lines that fail standard reads.

A charge-trapping memory refresh mechanism classifies cells by threshold voltage downshift to apply tailored programming pulses.

A flash memory storage device replaces deteriorated blocks with pre-erased redundant units during erase operations.

A multi-tier block structure segments memory into sub-blocks for independent erasure and targeted pre-charging of NAND strings.

Host commands trigger main control unit refresh operations, mitigating data retention errors while maintaining operation efficiency.

Segmenting the transistor channel with varying dopant concentrations allows low-voltage selection while protecting against high programming voltages.

A soft-decision read method maintains constant bit line voltages during continuous sensing operations in nonvolatile memory devices.

A flash memory programming method latches sensed cell states to verify data integrity during write operations.

Segmenting programming into multiple pulses per loop reduces operation count and latency while maintaining verification precision.

Dividing bit lines into independently chargeable segments reduces power consumption during partial data reads while maintaining full access capability.

A nonvolatile memory page buffer unit executes simultaneous data input and program verification operations.

A NAND flash cache programming method manages page buffers to enhance programming speed in triple-level-cell devices.

A controller calculates read voltages from threshold voltage distributions to improve data retrieval accuracy.

A semiconductor memory column control circuit uses a pointer register to generate signals for column selection.

Regular memory cells measure elapsed time and wear by analyzing self-discharge patterns, eliminating dedicated timekeeping hardware.

Distinct voltages applied to programmed versus unprogrammed unselected word lines eliminate back pattern effect errors in NAND flash memory.

Adjusting voltage timing on dummy word lines minimizes charge loss in adjacent memory cells, enhancing data retention without extra programming steps.

A non-volatile memory programming method precharges bit lines connected to inhibited cells before applying a program voltage to selected word lines.

Control logic executes initial program verify with adjusted voltage to maintain threshold distribution after suspend-resume cycles.