摘要:
A method of reading data in a non-volatile memory device. The method includes reading a plurality of memory cells of a first page in a memory cell array using a first read level, reading a plurality of memory cells of a second page adjacent to the memory cells of the first page using a second read level, determining whether a state of each memory cell of the first page has been changed based on the first read level to verify a threshold voltage of each memory cell of the second page based on the second read level, and revising the state of each memory cell of the second page according to a result of the determination.
摘要:
A method of reading data in a non-volatile memory device. The method includes reading a plurality of memory cells of a first page in a memory cell array using a first read level, reading a plurality of memory cells of a second page adjacent to the memory cells of the first page using a second read level, determining whether a state of each memory cell of the first page has been changed based on the first read level to verify a threshold voltage of each memory cell of the second page based on the second read level, and revising the state of each memory cell of the second page according to a result of the determination.
摘要:
Memory devices and/or methods of managing memory data errors are provided. A memory device detects and corrects an error bit of data read from a plurality of memory cells, and identifies a memory cell storing the detected error bit. The memory device assigns a verification voltage to each of the plurality of first memory cells, the assigned verification voltage corresponding to the corrected bit for the identified memory cell, the assigned verification voltage corresponding to the read data for the remaining memory cells. The memory device readjusts the data stored in the plurality of memory cells using the assigned verification voltage. Through this, it is possible to increase a retention period of the data of the memory device.
摘要:
A decoder includes multiple decoder stages and a controller. The decoder stages perform decoding operations with respect to a received signal using corresponding different decoding algorithms. The controller determines whether the decoding operation performed by one of the decoder stages with respect to the received signal is successful, and controls the decoding operation of each of the other decoder stages in response to a result of the determination.
摘要:
A memory device and a memory data determination method are provided. The memory device may estimate a threshold voltage shift of a first memory cell based on data before the first memory cell is programmed and a target program threshold voltage of the first memory cell. The memory device may generate a metric of a threshold voltage shift of a second memory cell based on the estimated threshold voltage shift of the first memory cell. Also, the memory device may determine data stored in the second memory cell based on the metric.
摘要:
A memory device and a memory data reading method are provided. The memory device may include: a multi-bit cell array; a programming unit that stores N data pages in a memory page in the multi-bit cell array; and a control unit that divides the N data pages into a first group and second group, reads data of the first group from the memory page, and determines a scheme of reading data of the second group from the memory page based on the read data of the first group.
摘要:
Memory devices and/or memory programming methods are provided. A memory device may include: a memory cell array including a plurality of memory cells; a programming unit configured to apply a plurality of pulses corresponding to a program voltage to a gate terminal of each of the plurality of memory cells, and to apply a program condition voltage to a bit line connected with a memory cell having a threshold voltage lower than a verification voltage from among the plurality of memory cells; and a control unit configured to increase the program voltage during a first time interval by a first increment for each pulse, and to increase the program voltage during a second time interval by a second increment for each pulse. Through this, it may be possible to reduce a width of a distribution of threshold voltages of a memory cell.
摘要:
Example embodiments relate to an apparatus which may determine a length of data to be stored in a memory cell, and may store the data in a memory based on the determined length. A memory data storage apparatus according to example embodiments may, include: a determination unit that may determine a number of bits of data and a number of bits of data detection information to be stored in a memory cell; a data receiving unit that may receive data corresponding to the determined number of bits; an error correction coding unit that may perform an error correction coding with respect to the received data and generate data detection information corresponding to the number of bits of the data detection information; and a data storage unit that may store the received data and generated data detection information in the memory cell.
摘要:
Memory devices and/or error control codes (ECC) decoding methods may be provided. A memory device may include a memory cell array, and a decoder to perform hard decision decoding of first data read from the memory cell array by a first read scheme, and to generate output data and error information of the output data. The memory device may also include and a control unit to determine an error rate of the output data based on the error information, and to determine whether to transmit an additional read command for soft decision decoding to the memory cell array based on the error rate. An ECC decoding time may be reduced through such a memory device.
摘要:
A method of encoding multi-bit level data includes: determining a range of an error pattern generated according to a transmission symbol, encoding an M-bit level of a P-bit level corresponding to the transmission symbol based on the range of the error pattern, and excluding encoding of a P-M bit level of the P-bit level. The variable P is a natural number of a value at least two, and the variable M is a natural number less than P.