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Patent Application Titled "Nonvolatile Memory Apparatus, Operating Method Thereof, and Data Processing System Having the Same" Published Online

July 1, 2014



By a News Reporter-Staff News Editor at Information Technology Newsweekly -- According to news reporting originating from Washington, D.C., by VerticalNews journalists, a patent application by the inventor SHIN, Min Chul (Icheon-si Gyeonggi-do, KR), filed on March 18, 2013, was made available online on June 19, 2014.

The assignee for this patent application is Sk Hynix Inc.

Reporters obtained the following quote from the background information supplied by the inventors: "The present invention generally relates to a semiconductor apparatus, and more particularly, to a nonvolatile memory apparatus, an operating method thereof, and a data processing system having is the same.

"A nonvolatile memory apparatus represented by a flash memory, a phase change RAM (PCRAM), a resistive RAM (ReRAM), a magnetic RAM (MRAM) and the like has developed from a single level cell (SLC) method for writing single-level data to a multi-level cell (MLC) method for writing multi-level data.

"The nonvolatile memory apparatus based on the SLC method may determine whether or not to write data, according to a comparison result between data to be written and data written in a cell, in order to reduce an operation current during a program operation. That is, when the data to be written are identical to the data written in the cell, the nonvolatile memory device may not perform the program operation, or when most of the data to be written have different levels from the data written in the memory cell, the nonvolatile memory device may invert and write the data (data inversion method), thereby reducing a write current.

"The data inversion method has a significant current reduction effect in an SLC, but has no current reduction effect in an MLC. Therefore, a data input/output control method suitable for the MLC method is required."

In addition to obtaining background information on this patent application, VerticalNews editors also obtained the inventor's summary information for this patent application: "In one embodiment of the present invention, a nonvolatile memory apparatus includes: a memory cell array; a write driver/sense amplifier (WD/SA) configured to program data into the memory cell array or read data from the memory cell array; and an I/O controller configured to receive the read data from the memory cell array from the WD/SA, decide a coding mode based on comparison data between write data and the read data, encode the write data according to the coding mode, and provide the encoded data to the WD/SA.

"In an embodiment of the present invention, an operating method of a nonvolatile memory apparatus includes the steps of: reading data from a memory cell array in which program is to be performed, as a write command is inputted from a host; deciding a coding mode based on comparison data obtained by comparing write data and the read data from the memory cell array; encoding the write data according to the coding mode; and programming the encoded data into a memory cell.

"In an embodiment of the present invention, a data processing system includes: a nonvolatile memory apparatus; and a memory controller configured to access the nonvolatile memory apparatus in response to a request of a host, wherein the nonvolatile memory apparatus includes: a memory cell array; a WD/SA configured to program data into the memory cell array or read data from the memory cell array; and an I/O controller configured to receive the read data from the memory cell array from the WD/SA, decide a coding mode based on comparison data between write data and the read data, encode the write data according to the coding mode, and provide the encoded data to the WD/SA.

"In an embodiment of the present invention, a data processing system includes: a processor configured to control overall operations; a working memory configured to store applications, data, and control signals which are required for operating the processor; a nonvolatile memory apparatus accessed by the processor; and a user interface configured to perform data I/O between the processor and a user, wherein the nonvolatile memory apparatus includes: a memory cell array; a WD/SA configured to program data into the memory cell array or read data from the memory cell array; and an I/O controller configured to receive the read data from the memory cell array from the WD/SA, decide a coding mode based on comparison data between write data and the read data, encode the write data according to the coding mode, and provide the encoded data to the WD/SA.

BRIEF DESCRIPTION OF THE DRAWINGS

"Features, aspects, and embodiments are described in conjunction with the attached drawings, in which:

"FIG. 1 is a configuration diagram of a nonvolatile memory apparatus according to one embodiment of the present invention;

"FIG. 2 illustrates an I/O controller of FIG. 1;

"FIG. 3 is a table for explaining the types of a coding mode based on data comparison results;

"FIG. 4 is a table for explaining an example of a data write method based on a coding mode;

"FIGS. 5 and 6 are flowcharts for explaining the operation of the nonvolatile memory apparatus according to the embodiment of the present invention;

"FIG. 7 is a configuration diagram of a data processing system according to the embodiment of the present invention; and

"FIG. 8 is a configuration diagram of a data processing system according to another embodiment of the present invention."

For more information, see this patent application: SHIN, Min Chul. Nonvolatile Memory Apparatus, Operating Method Thereof, and Data Processing System Having the Same. Filed March 18, 2013 and posted June 19, 2014. Patent URL: http://appft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&u=%2Fnetahtml%2FPTO%2Fsearch-adv.html&r=568&p=12&f=G&l=50&d=PG01&S1=20140612.PD.&OS=PD/20140612&RS=PD/20140612

Keywords for this news article include: Sk Hynix Inc, Information Technology, Information and Data Processing.

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Source: Information Technology Newsweekly


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