Electrical computers and digital processing systems: memory – Storage accessing and control – Control technique
Reexamination Certificate
2006-04-04
2006-04-04
Padmanabhan, Mano (Department: 2188)
Electrical computers and digital processing systems: memory
Storage accessing and control
Control technique
Reexamination Certificate
active
07024532
ABSTRACT:
A file management method, whereby inconsistencies can be prevented between a file recorded in a memory card and the file management information that a terminal apparatus manages, without leaking the information of a file made and stored in an in-card processing system. According to this method, a flash memory accessible from two processing systems100and300is provided. First processing system100requests a reservation of an use area of flash memory200ato second processing system300, which, upon receiving the request, implements a reservation processing for an area of the memory section and reflects the information of the reserve area upon file management section230. First processing system100performs the processing of writing data into the area reserved by second processing system300. Inconsistencies between the file management information that a terminal manages and a file actually recorded into the memory section of a secure card can be prevented. Furthermore, exclusive control can be implemented, whereby there will be no direct access from a terminal to the area used for a card-dedicated file recorded therein by means of processing that takes place inside the card.
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English Language Abstract of JP 8-95835.
English Language Abstract of JP2001-243096.
Nakanishi Yoshiaki
Sasaki Osamu
Sekibe Tsutomu
Takagi Yoshihiko
Baker Paul
Matsushita Electric - Industrial Co., Ltd.
Padmanabhan Mano
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