| 摘要 |
PCT No. PCT/NL95/00055 Sec. 371 Date Jul. 19, 1996 Sec. 102(e) Date Jul. 19, 1996 PCT Filed Feb. 8, 1995 PCT Pub. No. WO95/22126 PCT Pub. Date Aug. 17, 1995Data exchange system includes at least one portable data processing unit (5) having data communication elements (14), processing device (15) and memory elements (16). The latter includes an executive program (17) and one or more application descriptions (18(1) . . . 18(n)). Each application description has at least one interaction context (19(1) . . . ) comprising commands, data elements, data references, procedures, access conditions, and external references. The structure of the data elements and the data references, as well as other references, is chosen in such a way that a very efficient use of the restricted memory space of, for example, smart cards is obtained.
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