Communications: electrical – Systems – Portable self-contained
Patent
1974-07-10
1976-08-31
Trafton, David L.
Communications: electrical
Systems
Portable self-contained
315 30, G06F 314
Patent
active
039784703
ABSTRACT:
A multi-channel display apparatus includes a computer having a random access memory means for storing of the continuous monitored data and for driving of a multiple-channel television unit, with each channel identified by a preselected unique color. Vertical scan lines generate line display segments in each channel. The computer stores line segment definition information which is compared with a beam driver control to activate one color driver which is preset to produce a predetermined color presentation for the channel. Alphanumeric data may be displayed in selected channels through a separate character channel having a character generator with an internal sequence system to read-out the selected character and channel location, with an auxiliary decoder selecting the color driver. A computer processor and a display controller are operated through an interlocking control, with the controller monitoring the computer and allowing computer-memory coupling. During a character display, the computer kills the processing cycle, while during a graphical display, the line segment generation is interrupted at an appropriate time and held in standby. The processing system for line segment display includes buffer and latch registers for each line in each channel. A digital logic comparator driven from a single coordinate count unit, reset at the beginning of each scan line, sequentially reads the register and activates channel related color drivers. A synchronizing signal unit provides horizontal and vertical sync signals for driving of the television unit and processor and the sync clock is coupled to drive the comparator. Each driver includes continuously variable primary color signals which are connected to the television set by suitable mixer to permit preset of each channel to any desired color. The channels can be located on the display screen in separate or superimposed locations and related graphical and character channels can be displayed in corresponding color by suitable logic circuitry.
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Midwest Analog and Digital, Inc.
Trafton David L.
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