Device for the display of data on a display apparatus

Details Device for the display of data on a display apparatus Device for the display of data on a display apparatus

1978-04-17

1980-03-04

Trafton, David L.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340152R, 340799, 340711, 364900, G06K 1518

Patent

active

041919564

ABSTRACT:
A device for displaying page data on a television monitor, having a foreground memory and a background memory. The foreground memory has a capacity of one page of text. The background memory has serial sub-memories connected in parallel, each sub-memory containing part of a character, so that together the sub-memories contain the relevant character within a series of characters. The characters become serially available on the outputs of the sub-memories for transfer, to the foreground memory. The sub-memories may be magnetic bubbles. Each of said sub-memories preferably is a single loop so that intermediate control during the transfer of a page of data is very simple. The foreground memory is preferably a random access memory which can be addressed. The output of the memory has connected to it a counter with sub-counting cycles having a length of one line on the display apparatus in order to form the lines to be displayed thereon.

REFERENCES:
patent: 3242470 (1966-03-01), Hagelbarger et al.
patent: 3631455 (1971-12-01), Gregg
patent: 3792465 (1974-02-01), Collins et al.
patent: 4012723 (1977-03-01), Harper

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