Low impedance boosted high speed data cable
OwnerJohn Martin Horan, Gerald Donal Murphy +2inventors
InventorsJohn Martin Horan, Gerald Donal Murphy, David William McGowan, John Anthony Keane
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Abstract
A high speed video cable carries signals according to the High-Definition Multimedia Interface (HDMI) or DisplayPort standards, and includes a raw cable and a boost device. The raw cable includes coaxial lines of a characteristic cable impedance lower than the impedance implied in the standards. The correct impedance is observed at the sending end by series resistors mounted in the first cable connector. The resultant loss of signal is made up with the boost device mounted in the connector at the other end of the cable.
Claims20
A data cable for carrying at least a first data signal between a data source device and a data sink device, the data cable comprising:
- a raw cable including at least a first cable element, the first cable element comprising at least a first conductor and a first conductive shield, the first cable element having a first cable element impedance lower than a data source device output impedance, wherein the first conductor is configured to carry at least a portion of the first data signal;
- a first padding resistor electrically coupled between the data source device and the first conductor;
- and
- a boost device coupling the first conductor with the data sink device, wherein a boost device input impedance matches the first cable element impedance and a boost device output impedance matches a data sink device input impedance.
Dependencies are inferred from the claim text.