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205results about How to "Improve programming speed" patented technology

Flash memory storage device, controller thereof, and data programming method thereof

A flash memory storage device, a controller thereof, and a data programming method are provided. The flash memory storage device has a flash memory comprising a plurality of physical blocks, each physical block includes a plurality of physical addresses, and the physical addresses comprises at least one fast physical address and at least one slow physical address. The method comprises at least grouping the physical blocks into a data area and a spare area; setting a predetermined block number; obtaining m physical blocks from the spare area, receiving a write command comprising a write data and a logical address, determining a logical address range of a buffer according to the logical address and the predetermined block number. When all logical addresses to be programmed with the write data are within the logical address range of the buffer, using a fast mode to program the data into the m physical blocks.
Owner:PHISON ELECTRONICS

Branch prediction apparatus and process for restoring replaced branch history for use in future branch predictions for an executing program

Apparatus and methods implemented in a processor semiconductor logic chip for providing novel “hint instructions” that uniquely preserve and reuse branch predictions replaced in a branch history table (BHT). A branch prediction is lost in the BHT after its associated instruction is replaced in an instruction cache. The unique “hint instructions” are generated and stored in a unique instruction cache which associates each hint instruction with a line of instructions. The hint instructions contains the latest branch history for all branch instructions executed in an associated line of instructions, and they are stored in the instruction cache during instruction cache hits in the associated line. During an instruction cache miss in an instruction line, the associated hint instruction is stored in a second level cache with a copy of the associated instruction line being replaced in the instruction cache. In the second level cache, the copy of the line is located through the instruction cache directory entry associated with the line being replaced in the instruction cache. Later, the hint instruction can be retrieved into the instruction cache when its associated instruction line is fetched from the second level cache, and then its associated hint instruction is also retrieved and used to restore the latest branch predictions for that instruction line. In the prior art this branch prediction would have been lost. It is estimated that this invention improves program performance for each replaced branch prediction by about 80%, due to increasing the probability of BHT bits correctly predicting the branch paths in the program from about 50% to over 90%. Each incorrect BHT branch prediction may result in the loss of many execution cycles, resulting in additional instruction re-execution overhead when incorrect branch paths are belatedly discovered.
Owner:IBM CORP

Multiple pass write sequence for non-volatile storage

ActiveUS20080198660A1Improve programming speedMaintains reasonably tight threshold voltage distributionRead-only memoriesDigital storageProgramming processVoltage
A set of non-volatile storage elements are erased to an erased threshold voltage distribution. A multi-pass programming process is performed that programs the set of non-volatile storage elements from the erased threshold voltage distribution to a set valid data threshold voltage distributions. Each programming pass has one or more starting threshold voltage distributions and programs non-volatile storage elements to at least two ending threshold voltage distributions.
Owner:SANDISK TECH LLC

Data storage device and method of programming memory cells

A method of programming a non-volatile memory device includes programming memory cells selected from the plurality of memory cells by increasing turn values of program loops based on an incremental step pulse program (ISPP) algorithm; detecting a first turn value of a first program loop wherein, in the first program loop, a first number or a first ratio of first unprogrammed memory cells is smaller than or equal to a first set value; calculating a second turn value of a second program loop based on the first turn value wherein, in the second program loop, a second number or a second ratio of second unprogrammed memory cells is expected to be smaller than or equal to a second set value, the second set value being smaller than the first set value; executing subsequent program loops on the unprogrammed memory cells up to the second program loop; detecting a third number or a third ratio of third unprogrammed memory cells in the second program loop; comparing the third number or the third ratio of the third unprogrammed memory cells to the second set value; determining a program pass when the third number or the third ratio of the third unprogrammed memory cells is smaller than or equal to the second set value; and determining a program fail when the third number or the third ratio of the unprogrammed memory cell exceeds the second set value.
Owner:SK HYNIX INC

Substrate bias for programming non-volatile memory

A method and system for substrate bias for programming non-volatile memory. A bias voltage is applied to a deep well structure under a well comprising a channel region for a non-volatile memory cell. During programming, a negative bias applied to the deep well beneficially creates a non-uniform distribution of electrons within the channel region, with an abundance of electrons at the surface of the channel region. The application of additional bias voltages to a control gate and a drain may cause electrons to migrate from the channel region to a storage layer of the non-volatile memory cell. Advantageously, due to the increased supply of electrons at the surface of the channel region, programming of the non-volatile cell takes place faster than under the conventional art.
Owner:MONTEREY RES LLC
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