Detection of errors in the communication of data

Details Detection of errors in the communication of data Detection of errors in the communication of data

2006-04-04

2009-12-29

Chaudry, M. Mujtaba K (Department: 2112)

Error detection/correction and fault detection/recovery

Pulse or data error handling

Digital data error correction

C711S162000, C714S758000, C714S757000

Reexamination Certificate

active

07640480

ABSTRACT:
The invention relates to a method and a system for detecting errors in the communication of data from a transmitter to at least one receiver. In the method, in a first step on the side of the transmitter a first check value is generated at least from user data to be communicated; in a second step on the side of the transmitter a second check value is generated at least from the user data and the first check value; in a third step at least the user data, the first check value and the second check value are communicated to the receiver; in a fourth step on the side of the receiver the communicated user data and the communicated first check value are verified with the aid of the second check value; and in a fifth step on the side of the receiver the communicated user data are verified with the aid of the first check value. To improve the detection of errors in the communication of data from the transmitter to the at least one receiver it is proposed that, in the first step, the user data are modified to generate the first check value, in the second step the unmodified user data are used to generate the second check value, in the fourth step the unmodified communicated user data are used, and in the fifth step the communicated user data are modified according to the modification in the first step for checking with the aid of the first check value.

REFERENCES:
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patent: WO 02/39593 (2002-05-01), None
MacWilliams et al., “The Theory of Error-Correcting Codes”, 1977, pp. 1-9 North-Holland, New York, XP00790336, ISBN: 0444851933.
F. J. MacWilliams and N.J.A. Sloane, “The Theory of Error-Correcting Codes”, North-Holland, New York, 1977, pp. 567-571, XP 002348328.

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