Method of encoding information within directory files on an integrated circuit smart card

US6772954B2 · kind B2 · utility

Assignee

• Activcard Ireland Limited · IE

Inventors

• John Boyer · Seattle, US
• Robert D. Hillhouse · Ottawa, CA

Key dates

• Filing date: Oct 9, 2001
• Grant date: Aug 10, 2004
• Expiry date: Nov 11, 2021

Classification

• Technology area (CPC G): Physics
• CPC primary: G06Q20/35765
• WIPO field: IT methods for management
• WIPO sector: Electrical engineering

Abstract

An improved method of encoding data within directory files on an integrated circuit IC) smart card is shown. Advantageously the improved method no longer imposes a limitation in placing the pointer data start address prior to encoding of data, since after encoding a single continuous block of unused memory within the directory file results, enables encoding applications to make better use of this memory space thereby eliminating the deficiency of having two non-sequential empty memory blocks as provided by prior art systems.