Chip card loadable with compressed data

Details Chip card loadable with compressed data Chip card loadable with compressed data

2006-09-05

2006-09-05

Jung, David (Department: 2134)

Electrical computers and digital processing systems: support

Data processing protection using cryptography

By stored data protection

C713S189000, C713S192000

Reexamination Certificate

active

07103780

ABSTRACT:
The invention concerns a chip card receiving fields of compressed data encapsulated in frames including an indication of the expected length of decompressed data and a length of compressed data. The frames are received in a storage unit and the processor of the card decompresses each data field according to a decompression algorithm over a length based on the indication of the expected length and writes the decompressed data in another buffer storage unit. Several algorithms and optionally several decompression models are installed in the card storage unit, and a couple thereof is selected by the number read in the heading of each frame received.

REFERENCES:
patent: 5499293 (1996-03-01), Behram et al.
patent: 5796829 (1998-08-01), Harding et al.
patent: 2730330 (1996-08-01), None
patent: 2759795 (1998-08-01), None
Marvle: a VLSI chip for variable length encoding and decoding; Mukherjee et al.; Computer Design: VLSI in Computers and Processors, 1992. ICCD '92. Proceedings., IEEE 1992 International Conference on Oct. 11-14, 1992, pp. 170-173.
Code compression using variable-to-fixed coding based on arithmetic coding; Yuan Xie; Wolf, W.; Lekatsas, H.; Data Compression Conference, 2003. Proceedings. DCC 2003 Mar. 25-27, 2003, pp. 382-391.
Decompression of test data using variable-length seed LFSRs; Zacharia, N.; Rajski, J.; Tyszer, J.; VLSI Test Symposium, 1995, Proceedings., 13th IEEE Apr. 30-May 3, 1995, pp. 426-433.

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