Abstract: Methods, apparatuses, and systems for in-or near-memory processing are described. Strings of bits (e.g., vectors) may be fetched and processed in logic of a memory device without involving a separate processing unit. Operations (e.g., arithmetic operations) may be performed on numbers stored in a bit-parallel way during a single sequence of clock cycles. Arithmetic may thus be performed in a single pass as numbers are bits of two or more strings of bits are fetched and without intermediate storage of the numbers. Vectors may be fetched (e.g., identified, transmitted, received) from one or more bit lines. Registers of a memory array may be used to write (e.g., store or temporarily store) results or ancillary bits (e.g., carry bits or carry flags) that facilitate arithmetic operations. Circuitry near, adjacent, or under the memory array may employ XOR or AND (or other) logic to fetch, organize, or operate on the data.

Abstract: Methods, systems, and devices for error correction for content-addressable memory (CAM) are described. A CAM may store bit vectors as a set of subvectors, which each subvector stored in an independent aspect of the CAM, such as in a separate column or array of memory cells within the CAM. The CAM may similarly segment a queried input bit vector and identify, for each resulting input subvector, whether a matching subvector is stored by the CAM. The CAM may identify a match for the input bit vector when the number of matching subvectors satisfies a threshold. The CAM may validate a match based on comparing a stored bit vector corresponding to the identified match to the input bit vector. The stored bit vector may undergo error correction and may be stored in the CAM or another memory array, such as a dynamic random access memory (DRAM) array.

Abstract: An apparatus (e.g., a content addressable memory system) can have a controller; a first content addressable memory coupled to the controller and a second content addressable memory coupled to the controller. The controller can be configured to cause the first content addressable memory to compare input data to first data stored in the first content addressable memory and cause the second content addressable memory to compare the input data to second data stored in the second content addressable memory such the input data is compared to the first and second data concurrently and replace a result of the comparison of the input data to the first data with a result of the comparison of the input data to the second data in response to determining that the first data is invalid and that the second data corresponds to the first data.

Abstract: An apparatus (e.g., a content addressable memory system) can have a controller, a first content addressable memory coupled to the controller, and a second content addressable memory coupled to the controller. The controller can be configured to cause the first content addressable memory to write data in the first content addressable memory, cause the second content addressable memory to write the data in the second content addressable memory, and cause the second content addressable memory to query the data written in the second content addressable memory while the first content addressable memory continues to write the data in the first content addressable memory.

Abstract: An apparatus (e.g., a content addressable memory system) can have a controller, a first content addressable memory coupled to the controller, and a second content addressable memory coupled to the controller. The controller can be configured to cause the first content addressable memory to write data in the first content addressable memory, cause the second content addressable memory to write the data in the second content addressable memory, and cause the second content addressable memory to query the data written in the second content addressable memory while the first content addressable memory continues to write the data in the first content addressable memory.

Abstract: An apparatus (e.g., a content addressable memory system) can have a controller; a first content addressable memory coupled to the controller and a second content addressable memory coupled to the controller. The controller can be configured to cause the first content addressable memory to compare input data to first data stored in the first content addressable memory and cause the second content addressable memory to compare the input data to second data stored in the second content addressable memory such the input data is compared to the first and second data concurrently and replace a result of the comparison of the input data to the first data with a result of the comparison of the input data to the second data in response to determining that the first data is invalid and that the second data corresponds to the first data.

Abstract: Methods, systems, and devices for address obfuscation for memory are described. A mapping function may map a logical address of data to a physical address of a memory cell. The mapping function may be implemented with a mapping component that includes mapping subcomponents. Each mapping subcomponent may be independently configurable to implement a logic function for determining a bit of the physical address. The mapping function may vary across memory devices or aspects of memory device, and in some cases may vary over time.

Abstract: Apparatuses and methods for a distributed memory system including memory nodes are disclosed. An example apparatus includes a processor and a memory system coupled to the processor. The memory system is configured to receive instructions from the processor to access information stored by the memory system. The memory system includes a plurality of memory nodes, wherein each memory node of the plurality of memory nodes is coupled to at least one other memory node of the plurality of memory nodes, and each memory node of the plurality of memory nodes is configured to generate an internal message including instructions for an operation, the internal message to be provided to another memory node of the plurality of memory nodes to perform the operation.

Abstract: Apparatuses and methods for a distributed memory system including memory nodes are disclosed. An example apparatus includes a processor and a memory system coupled to the processor. The memory system is configured to receive instructions from the processor to access information stored by the memory system. The memory system includes a plurality of memory nodes, wherein each memory node of the plurality of memory nodes is coupled to at least one other memory node of the plurality of memory nodes, and each memory node of the plurality of memory nodes is configured to generate an internal message including instructions for an operation, the internal message to be provided to another memory node of the plurality of memory nodes to perform the operation.

Abstract: Some embodiments of the invention pertain to a memory system containing multiple memory devices, in which one or multiple ones of the memory devices may flexibly be selected at one time for a common operation to be performed by all the selected devices concurrently.

Abstract: Some embodiments of the invention pertain to a memory system containing multiple memory devices, in which one or multiple ones of the memory devices may flexibly be selected at one time for a common operation to be performed by all the selected devices concurrently.

Abstract: According to some embodiments, power loss recovery information related to an active operation is stored in volatile memory. Upon detection of a power loss condition, the power loss recovery information is copied to non-volatile memory. Upon a return of power, the power loss recovery information is used to complete or correct the interrupted operation.

Abstract: Data structures of different sizes may be stored in memory using different ECC schemes. A memory device may include multiple ECC engines to support error correction operations on different sized data structures.

Abstract: Some embodiments of the invention pertain to a memory system containing multiple memory devices, in which one or multiple ones of the memory devices may flexibly be selected at one time for a common operation to be performed by all the selected devices concurrently.

Abstract: Provided are a method and device for logging changes to blocks in a non-volatile memory. Security bits are maintained for blocks of cells in a non-volatile memory device indicating whether data in the blocks has been modified. The security bit for one block is set to indicate modification in response to detecting that at least one cell in the block was modified.

Abstract: Some embodiments of the invention use a command-based interface to control reads and writes with non-volatile memory devices. This may reduce the number of pins that are needed on each integrated circuit, and therefore reduce the cost and size of those integrated circuits. In some embodiments, an on-die cache buffer may be used to buffer data transfers between a high-speed memory bus and the slower speed non-volatile array.

Abstract: Embodiments of the invention are generally directed to systems, methods, and apparatuses for autonomous memory subsystems in computing platforms. In some embodiments, the autonomous memory mechanism includes one or more autonomous memory logic instances (AMLs) and a transaction protocol to control the AMLs. The autonomous memory mechanism can be employed to accelerate bulk memory operations. Other embodiments are described and claimed.

Abstract: Various embodiments of the invention connect multiple non-volatile memory controllers in a daisy chain manner, so the multiple memory devices may be accessed from a common host controller. Data and control signals may be daisy-chained in this way, so that many memory devices may be connected together, while not increasing the loading on individual signals lines. Transfer with the various memory devices may be interleaved, so that the relatively slow times of the memory devices doesn't slow down the overall throughout of the memory stem.

Abstract: In various embodiments, a plurality of non-volatile memory devices, such as NAND flash memory device, may be connected to a host controller device in a fanned out configuration that allows each of the plurality of memory devices to perform read and/or write operations simultaneously. Each non-volatile memory device may include high speed input circuitry and high speed output circuitry so that transfers to and from memory are not limited by the speed of the flash memory read/write interface.

Abstract: Some embodiments of the invention use a command-based interface to control reads and writes with non-volatile memory devices. This may reduce the number of pins that are needed on each integrated circuit, and therefore reduce the cost and size of those integrated circuits. In some embodiments, an on-die cache buffer may be used to buffer data transfers between a high-speed memory bus and the slower speed non-volatile array.