Importance

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Abstract

A communications system linking video phones located at diverse premises by a network of optical fiber cables. Each premises has a telephone, television screen, and television camera. Audio and video output signals are converted to optical signals, which signals are carried over the optical fiber network to another premises. Each premises has apparatus for converting optical signals to a form suitable for driving the speaker of the telephone and the CRT of the television. Extremely high resolution is achieved by limiting the G1 aperture of the television cathode to 0.010 inch, thereby enabling the CRT to scan at least 2,000 lines. A centrally located master computer is disposed serially between any two premises, and generates signals for controlling horizontal and vertical yoke, and the electron gun. These signals are optically transmitted concurrently with the audio and video input signals. The system may also incorporate other inputs from the premises, such as utility meters. It will also process external inputs, such as television broadcast services whether produced from RF coaxial, microwave or other visual information suppliers.

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First Claim