Abstract: There is disclosed a data receiving device for coupling to an AC power line through a standard light bulb socket. A standard medium lamp base is supported by a frame and connected to a branch circuit of the AC power line. An electrical device having signal terminals and supported by the frame is driven by electrical circuitry having a first input and a first output. The first output is coupled to the signal terminals for driving the electrical device. A data receiver has a second input for receiving both AC power and a data signal from the AC power line. The second input is coupled to the lamp base and a second output is coupled to the first input of the electrical circuitry. In another aspect, a data interface comprising a standard medium lamp base coupled to a data terminal device having a data receiving and/or transmitting interface circuit therein is threadably engaged to a standard medium lamp receptacle connected to the AC power line branch circuit.

Abstract: There is disclosed a data receiving device for coupling to an AC power line through a standard light bulb socket. A standard medium lamp base is supported by a frame and connected to a branch circuit of the AC power line. An electrical device having signal terminals and supported by the frame is driven by electrical circuitry having a first input and a first output. The first output is coupled to the signal terminals for driving the electrical device. A data receiver has a second input for receiving both AC power and a data signal from the AC power line. The second input is coupled to the lamp base and a second output is coupled to the first input of the electrical circuitry. In another aspect, a data interface comprising a standard medium lamp base coupled to a data terminal device having a data receiving and/or transmitting interface circuit therein is threadably engaged to a standard medium lamp receptacle connected to the AC power line branch circuit.

Abstract: An apparatus for converting a low voltage alternating current (AC) wiring circuit to a high speed data communications link, comprising a primary coupling circuit and a secondary coupling circuit. The apparatus provides low voltage AC power to a data device and couples data signals between the data device and the AC power line via the converted low voltage AC wiring circuit. An example is provided for retrofitting a door chime system to a high speed data link such as a video camera system.

Abstract: A data receiving or transmitting device, having data receiving or transmitting capability, is coupled respectively from or to an AC power line through a standard light bulb socket. In one aspect, a data interface includes a data receiving device that may be configured for extracting data encoded for transmission or encoding data to be embedded and transmitted along the AC power line branch circuit. In another aspect a data receiving device includes a loudspeaker, an amplifier, and a data decoder coupled to the AC power line for playback of audio program material communicated to the device along the power line. The device screws into a light bulb socket for a “no-tools” installation.

Abstract: An apparatus for converting a low voltage alternating current (AC) wiring circuit to a high speed data communications link, comprising a primary coupling circuit and a secondary coupling circuit. The apparatus provides low voltage AC power to a data device and couples data signals between the data device and the AC power line via the converted low voltage AC wiring circuit. An example is provided for retrofitting a door chime system to a high speed data link such as a video camera system.