Data recovery from sudden power-off in mobile devices

Dongwook Kim*, Sungmin Park, Seona Won, Sooyong Kang

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionpeer-review

1 Citation (Scopus)


Mobile devices always have risk of unexpected battery component separation. In this paper, we present Difference Ratio-based Logging, a data recovery technology to prevent data loss in the volatile memory (DRAM) write buffer from sudden power-off. The proposed scheme can recover up-to-date user data in the buffer by using either two flash memory pages-sized NVRAM or small capacitor that sustains for flushing two pages of data in DRAM to flash memory. Our simulation study shows that the proposed scheme can provide recoverability of buffered data from sudden power-off with reasonable performance degradation compared with non-volatile memory-based write buffer.

Original languageEnglish
Title of host publicationGCCE 2012
Subtitle of host publication1st IEEE Global Conference on Consumer Electronics 2012
Place of PublicationPiscataway, New Jersey
Number of pages2
ISBN (Electronic)9781467315012, 9781467314992, 9781467314985
Publication statusPublished - 2012
Externally publishedYes
Event1st IEEE Global Conference on Consumer Electronics, GCCE 2012 - Tokyo, Japan
Duration: 2 Oct 20125 Oct 2012


Other1st IEEE Global Conference on Consumer Electronics, GCCE 2012


  • mobile device
  • flash memory
  • sudden power-off
  • data recovery


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