Method for operating a memory card

US5918230A · kind A · utility

Assignee

• Siemens Nixdorf Informationssysteme AG · DE

Inventors

• Klaus Becker · Hanau, DE
• Jorg Neumann · Ransbach-Baumbach, DE

Key dates

• Filing date: Mar 26, 1997
• Grant date: Jun 29, 1999
• Expiry date: Mar 26, 2017

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S707/99942
• WIPO field: Control
• WIPO sector: Instruments

Abstract

The method is for non-erasable or non-alterable storage of data records in a device, initialization establishing the format of the data records and determining those data fields by way of which summation is permissible. An initialization character sequence is transmitted that has at least a number and length of the data fields to be stored. The valid initialization character sequence is accepted and executed only once. After acceptance only data records whose coding satisfies the information is accepted.