Accession Number : ADD004460

Title :   Remote Plotter Control System.

Descriptive Note : Patent Application,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Moore,John C

Report Date : 21 Sep 1977

Pagination or Media Count : 16

Abstract : A digital plotter is controlled via a teletypewriter channel of a general purpose computer. A programmable plotter controller (microprocessor) is interposed between the teletypewriter output of the computer and the teletypewriter. In normal operation, the microprocessor acts as a buffer in the computer output line to the teletypewriter. However, upon receiving a special 'plotter on' command, the microprocessor decodes and converts the input teletypewriter characters into plotter commands and places the appropriate signals on the microprocessor data output lines. An interface means converts the signals to the proper logic level for use by the plotter and transmits the signals to the plotter. (Author)

Descriptors :   *Patent applications, *Plotters, *Digital systems, *Microprocessors, *Computer graphics, Remote control, Display systems, Data processing, Digital computers

Subject Categories : Computer Hardware

Distribution Statement : APPROVED FOR PUBLIC RELEASE