Computer graphics processing and selective visual display system – Display peripheral interface input device – Light pen for fluid matrix display panel
Patent
1994-09-23
1997-04-15
Powell, Mark R.
Computer graphics processing and selective visual display system
Display peripheral interface input device
Light pen for fluid matrix display panel
324121R, G09G 536
Patent
active
056214332
ABSTRACT:
The multichannel oscilloscope has a dot matrix display device, advantageously an LCD, with an integrated controller and character generator for forming a display made up of a plurality of characters consisting of pixels on a display screen, a multiplexer device connected to receive data from a plurality of channels and send the data to the dot matrix display device for multichannel display purposes and an additional controller device for controlling the transmission of the data from the multiplexer to the dot matrix display device and for controlling the parameters of the display device. The additional controller device consists of two EPROM units only and a more expensive but versatile microprocessor chip is not necessary. The additional controller device alternately transmits instruction signals defining a position on the display screen and input data signals from the multiplexer device determining a character to be displayed at that position. In one embodiment digital signals that alternate between two values in a plurality of channels can be simultaneously displayed, while in another embodiment the time dependence of varying analog input data signals in a plurality of channels can be displayed.
REFERENCES:
patent: 4250503 (1981-02-01), Shanks
patent: 4257043 (1981-03-01), Tsuchiko
Luu Matthew
Powell Mark R.
Striker Michael J.
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