Apparatus, method and system for controlling a load device via a power line by using a power negotiatiion protocol
AssigneePhilips Lighting Holding B.V.
InventorsMATTHIAS WENDT, MARCEL BEIJ
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Abstract
The present invention proposes to use a power negotiation connection (e.g. the VBUS channel) of a power delivery interface for transmitting or receiving control commands or, respectively, status information to/from a lighting device. The power negotiation connection can be used as a communication channel that is fully independent of the data connection. It uses, for example, different protocols and different wires than the data connection. Control commands, such as dim level or color, can be encoded in a vendor defined message of a related power negotiation protocol.
Claims13
An apparatus for controlling a load device, said apparatus comprising:
- a control unit adapted to use a power negotiation protocol signaling in order to exchange at least one of control and status information with the load device, wherein the power negotiation protocol used to exchange the control or status information is a USB Power Delivery power negotiation protocol;
- and
- a transceiver for transmitting or receiving, only via power supply USB pins, the control or status information to/from the load device over a power line used for supplying power to said load device.
A method of controlling a load device said method comprising:
- using a power negotiation protocol signaling in order to exchange at least one of control and status information with the load device;
- and
- transmitting or receiving the control or status information, only via power supply USB pins, over a power line used for supplying power to the load device, wherein
- the power negotiation protocol used to exchange the control or status information is a USB Power Delivery protocol.
Dependencies are inferred from the claim text.