RE-WRITING DEVICE AND METHOD
PROBLEM TO BE SOLVED: To provide a re-writing device and method in which the number of times of re-writing to a flash memory is small.SOLUTION: A CPU executes: first processing (step S1) for retrieving a recording block in which second information is not recorded in a second recording region, with a...
Gespeichert in:
Hauptverfasser: | , |
---|---|
Format: | Patent |
Sprache: | eng ; jpn |
Schlagworte: | |
Online-Zugang: | Volltext bestellen |
Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
Zusammenfassung: | PROBLEM TO BE SOLVED: To provide a re-writing device and method in which the number of times of re-writing to a flash memory is small.SOLUTION: A CPU executes: first processing (step S1) for retrieving a recording block in which second information is not recorded in a second recording region, with an input of re-writing information as a trigger; second processing (step S2) for writing the second information in the second recording region of the retrieved recording block; third processing (step S3) for making a first recording region and a second recording region of a recording block which is different from the recording block processed in the step S2 a blank; and fourth processing (step S4) for writing first information corresponding to the re-writing information, to the first recording region of the recording block processed by the step S3.SELECTED DRAWING: Figure 6
【課題】フラッシュメモリへの書き換え回数が少ない書き換え装置及び書き換え方法を提供する。【解決手段】CPUは、書き換え情報が入力されたことをトリガとして、第2の記録領域に第2の情報が記録されていない記録ブロックを検索する第1の処理(ステップS1)と、検索された記録ブロックの第2の記録領域に第2の情報を書き込む第2の処理(ステップS2)と、ステップS2で処理した記録ブロックとは別の記録ブロックの第1の記録領域及び第2の記録領域をブランクにする第3の処理(ステップS3)と、ステップS3で処理した記録ブロックの第1の記録領域に対し、前記書き換え情報に対応する第1の情報を書き込む第4の処理(ステップS4)とを実施する。【選択図】図6 |
---|