System and method for powering an information handling system through a display cable
AssigneeDell Products L.P.
InventorsShuguang Wu, Joseph E. Goodart, Jeffrey Thelen, Randall E. Juenger, Samuel Nicklaus D'Alessio
Life of this patent
Estimating the term…
Abstract
A display provides power to an information handling system through a display cable. The display cable includes a power wire and an auxiliary channel. The display and information handling system communicate through the auxiliary channel to coordinate power transfer from the display to the information handling system, such as in the form of a trickle charge to a battery integrated in the information handling system.
Claims20
An information handling system comprising:
- a housing;
- plural processing components disposed in the housing that cooperate to process visual information;
- a battery disposed in the housing;
- a display interface port operable to accept a display cable and to communicate visual information through the display cable to a display and having a bidirectional auxiliary channel to communicate management information;
- and
- a power manager running on a processing component, the power manager operable to determine whether the display supports transfer of power through the display cable to the information handling system, to transfer power only from the information handling system to the display if the display does not support transfer of power to the information handling system, to request a battery charge from the display through the display cable auxiliary channel if the display does support transfer of power to the information handling system, and to coordinate charging of the battery with power received through the display cable.
A method for providing power to an information handling system from a display through a display cable, the method comprising:
- providing power from the information handling system to the display through the display cable;
- communicating a power request from the information handling system to the display through the display cable;
- communicating a power request acknowledgment from the display to the information handling system through the display cable;
- determining that the display is able to provide power to the information handling system through the display cable;
- applying power at the display to a power wire of the display cable;
- and
- receiving the power at the information handling system through the power wire.
A system for providing power to an information handling system from a display, the system comprising:
- a display cable having an integrated power line;
- a power manager running on a processor of the information handling system and operable to determine that the display accepts power from the information handling system through the display cable, to determine that the information handling system accepts power from the display through the display cable, to request power from the display to the information handling system and to apply the power received from the display to a component of the information handling system;
- and
- a power source integrated in the display and operable to respond to the power manager request for power and to provide power from display to the information handling system through the display cable power line at predetermined power parameters.
Dependencies are inferred from the claim text.