Patent · US Expired

Process for managing the memory resources in a microcircuit card

US6223991A · kind A · utility

0Cited by
12References
15Claims
0Family size

Assignee

Inventors

Key dates

Filing dateNov 12, 1998
Grant dateMay 1, 2001
Priority date
Expiry dateNov 12, 2018

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG06F2212/177
  • WIPO fieldComputer technology
  • WIPO sectorElectrical engineering

Abstract

Process for reclaiming storage spaces in a microcircuit card when they are no longer used by the references of the system. Each storage space (EM.sub.1 -EM.sub.4) is provided with a header (E.sub.1 -E.sub.4) containing a number of references representative at any moment of a plurality of references requesting the data of the corresponding storage space. The headers form the object of chaining (Ch) and a storage space the number of references of which has been reduced to zero can be re-allocated. Under certain conditions, available and adjacent storage spaces can be merged.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.