Memory device with preread data management
US7552311B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 27, 2007 |
| Grant date | Jun 23, 2009 |
| Priority date | — |
| Expiry date | Apr 4, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/6022
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present invention provides a memory device that can flexibly decide the data to be preread. The memory device according to the present invention includes: a nonvolatile memory; a buffer memory having a higher access speed than the nonvolatile memory; and a control circuit. The control circuit creates a preread data management table that associates a logical address of preread data specified by a preread command inputted from the outside and a buffer memory address for storing the preread data. Moreover, the control circuit reads data specified by the command from the nonvolatile memory and stores it in the buffer memory as preread data. When a logical address specified in a read command inputted from the outside matches a logical address associated by the preread data management table, the control circuit outputs corresponding preread data from the buffer memory.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.