Two-way HDMI communication

摘要

A device is provided for use with an audiovisual device and an HDMI cable having a first end and a second end. The first end can connect to the audiovisual device, whereas the second end can connect to the device. The audiovisual device can provide power to the power line of the HDMI cable when providing the digital television audiovisual signals. The device includes an output portion, and input portion and a control portion. The output portion can provide output signals as the digital television audiovisual signals to the second end. The input portion can receive input signals as the digital television audiovisual signals from the second end. The control portion can instruct the output portion to output the digital television audiovisual signals to the second end or can instruct input portion to receive the digital television audiovisual signals from the second end based on the power.

主权项

1. A device comprising:
an output portion configured to be coupled to an audiovisual device via a cable, the cable including a data channel, a control channel and a power line and configured to transmit digital television audiovisual signals between the device and the audiovisual device, the output portion being configured to provide digital television audiovisual signals as output signals to the cable; an input portion configured to be coupled to the audiovisual device via the cable, the input portion being configured to receive digital television audiovisual signals as input signals from the cable; and a control portion configured to instruct the output portion to output the digital television audiovisual signals to the cable in a transmitting mode and to instruct the input portion to receive the digital television audiovisual signals from the cable in a receiving mode, wherein the control portion is configured to instruct the output portion to activate a power source to output power to the audiovisual device via the power line of the cable, to activate a plurality of switches connected to the data channel of the cable, to output display settings and the digital television audiovisual signals to the audiovisual device via the cable when the control portion detects that the device is in the transmitting mode and a first amount of power on the power line is not provided by the audiovisual device, wherein the control portion is configured to instruct the input portion to de-activate the power source to the power line, to return the display settings and receive the digital television audiovisual signals from the audiovisual device via the cable when the control portion detects that the device is in the receiving mode and the first amount of power on the power line is provided by the audiovisual device.