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US 4,229,769 AGranted
Facsimile system
AssigneeTexaco Inc.
InventorsRobert W. Pitts, Jr., Ronald G. Gillespie
Life of this patent
Estimating the term…
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AssigneeTexaco Inc.
InventorsRobert W. Pitts, Jr., Ronald G. Gillespie
Estimating the term…
A facsimile system includes a transmitter having a light source, which provides pulses of light, scans an original copy. The pulses of light impinge on the copy during each scan. A light responsive device spacially related to the copy receives pulses of light from the copy in accordance with the copy, and provides electrical pulses. A circuit in the transmitter provides output signals in accordance with the electrical pulses from the device. A pulse source in the transmitter provides synchronization pulses. The system also includes a receiver which has a network receiving the output signals and the synchronization pulses. The network provides electrical data pulses in accordance with the received output signals and electrical synchronization pulses in accordance with the received synchronization pulses. A control circuit connected to the network provides a control signal in accordance with the data pulses from the network. A laser in the receiver scans light sensitive material and provides pulses of light which strike the material in accordance with the control signal. The receiver further includes apparatus for developing material so as to provide a printed copy of the original copy.
A facsimile system comprising a transmitter including scanning means for scanning an original copy and periodically providing pulses of light impinging the copy during the scan, light responsive means spacially related to the copy for receiving pulses of light from the copy and providing electrical pulses on a one-for-one basis with the received light pulses, sync means for providing synchronization pulses, means connected to the electrical pulse means and to the sync means for providing an output signal in accordance with the electrical pulses from the electrical pulse means and the synchronization pulses, and a receiver including receiver means for receiving the output signal and providing electrical data pulses and synchronization pulses in accordance with the received output signals, light sensitive material, control signal means connected to the receiver means for providing a control signal in accordance with the electrical pulses from receiver means, laser means for scanning the material and providing pulses of light which strike the material in accordance with the control signal, and means for developing the material so as to provide a printed copy of the original copy.
Dependencies are inferred from the claim text.