Process for the transmission of a binary data flow having signaling lines that change their status based on grey coding
AssigneeAscom Tech AG
InventorDavid John Tonks
Life of this patent
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Abstract
Four parallel lines are provided for the guided transmission of a data flow with a high rate (sub-GHz range). Two data bits per transmission clock are transmitted via these lines. The other two remaining lines are used for signaling certain changes in both data bits. Data transmission and signaling are accomplished on the basis of the Grey code. In other words, only one of the four lines changes state per clock. The interface according to the invention has reduced sensitivity to signal skew and permits simple clock recovery in terms of circuit engineering.
Claims19
A process for the transmission of a binary data flow comprising:
- a) combining data bits of data flow in pairs;
- b) transmitting the combined data bits in a coded manner in the form of four parallel signals;
- and
- c) connecting the four parallel signals into a resultant signal unaffected by parity, wherein
- d) states of the four parallel signals change in terms of a Grey code.
A circuit arrangement comprising:
- means for combining data bits of data flow in pairs;
- means for transmitting the combined data bits in a coded manner in the form of four parallel signals;
- and
- means for connecting the four parallel signals into a resultant signal unaffected by parity, wherein:
- states of the four parallel signals change in terms of a Grey code.
A circuit arrangement comprising:
- a generator that combines data bits of data flow in pairs;
- a transmitter that transmits the combined data bits in a coded manner in the form of four parallel signals;
- and
- a decoder that connects the four parallel signals into a resultant signal unaffected by parity, wherein
- states of the four parallel signals change in terms of a Grey code.
A process for the transmission of a binary data flow comprising:
- a) combining data bits of data flow in pairs;
- and
- b) transmitting the combined data bits in a coded manner in the form of only four parallel signals, wherein
- c) states of the four parallel signals change in terms of a Grey code.
Dependencies are inferred from the claim text.