Process for transmitting digitized payload and signalling data over a channel
AssigneeAsea Brown Boveri AG
InventorsYves Collaud, Dominique Luisier
Life of this patent
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Abstract
A method for transmitting digitized payload data and signalling data over a common channel. The signalling data are multiplexed with the payload data using a suitable coding. The signalling bytes are preceded by at least one header bit, and confusion between the payload data and the header byte is prevented by inverting at least one bit of the payload data byte when a payload data byte corresponding to the header byte occurs.
Claims6
A method for transmitting first digital data and sporadically occurring second digital data over a channel, comprising the steps of:
- inserting, at a transition, only when the second digital data occurs, two header patterns before the second digital data is transmitted;
- inverting at least one bit of the first digital data when a first digital data pattern corresponds to the two header patterns;
- and
- transmitting the two header patterns consecutively.
A method for transmitting first digital data and sporadically occurring second digital data over a channel, comprising the steps of:
- inserting, at a transition, only when the second digital data occurs, at least one header pattern before the second digital data is transmitted;
- inverting at least one bit of the first digital data when a first digital data pattern corresponds to the at least one header pattern;
- and
- repeating the first digital data which was received prior to the header pattern.
A method for transmitting first digital data and sporadically occurring second digital data over a channel, comprising the steps of:
- inserting, at a transition, only when the second digital data occurs, at least one header pattern before the second digital data is transmitted;
- and
- inverting at least one bit of the first digital data when a first digital data pattern corresponds to the at least one header pattern;
- wherein the second digital data is allocated to lower value bits in a byte and portions of the first digital data are allocated to higher value bits in the byte.
Dependencies are inferred from the claim text.