| 摘要 |
A wireless communcations link (20) includes a base unit (22), which is connected to a wired communications line (32), so as to receive electrical signals from the line and transmit diffuse infrared radiation, modulated responsive to the received electrical signals. The base unit also receives modulated infrared radiation and transmits electrical signals over the communications line responsive to the received infrared radiation. At least one remote unit (24, 42) is connected to an audiovisual device (28, 50), and couples the device to the communications line by receiving the modulated infrared radiation transmitted by the base unit and transmitting modulated diffuse infrared radiation to the base unit. |
