Method for checking a message in a communication system
AssigneeRobert Bosch GmbH
InventorsMarcel Kneib, Oleg Schell
Life of this patent
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Abstract
A method for checking a message in a communication system, in which multiple users are connected to a communication medium that includes two signal lines and exchange messages via same. A time difference between points in time of reception of a message that is sent on the communication medium is ascertained at two different, predefined positions on the communication medium, and based on a comparison of the time difference to at least one reference time difference, it is determined whether the message originates from a verified user. During the ascertainment of the time difference at the two positions, in each case a difference signal is formed from signals that have resulted on the two signal lines due to the message.
Claims10
A method for checking a message in a communication system, in which multiple users are connected to a communication medium that includes two signal lines and exchange messages via the communication medium, the method comprising the following steps:
- ascertaining a time difference between points in time of reception of a message that is sent on the communication medium at two different, predefined positions on the communication medium;
- based on a comparison of the time difference to at least one reference time difference, determining whether the message originates from a verified user;
- and
- during the ascertainment of the time difference at the two positions, at each of the two positions, forming a difference signal from signals that resulted on the two signal lines due to the message.
A processing unit configured to check a message in a communication system, in which multiple users are connected to a communication medium that includes two signal lines and exchange messages via the communication medium, the processing unit configured to:
- ascertain a time difference between points in time of reception of a message that is sent on the communication medium at two different, predefined positions on the communication medium;
- based on a comparison of the time difference to at least one reference time difference, determine whether the message originates from a verified user;
- and
- during the ascertainment of the time difference at the two positions, at each of the two positions, a difference signal is formed from signals that resulted on the two signal lines due to the message.
A non-transitory machine-readable memory medium on which is stored a computer program for checking a message in a communication system, in which multiple users are connected to a communication medium that includes two signal lines and exchange messages via the communication medium, the computer program, when executed on a processing unit, causing the processing unit to perform method comprising the following steps:
- ascertaining a time difference between points in time of reception of a message that is sent on the communication medium at two different, predefined positions on the communication medium;
- based on a comparison of the time difference to at least one reference time difference, determining whether the message originates from a verified user;
- and
- during the ascertainment of the time difference at the two positions, at each of the two positions, forming a difference signal from signals that resulted on the two signal lines due to the message.
Dependencies are inferred from the claim text.