Cursor for plasma shift register display

Details Cursor for plasma shift register display Cursor for plasma shift register display

1980-04-16

1982-06-22

Curtis, Marshall M.

Communications: electrical

Land vehicle alarms or indicators

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

340769, 340773, 340779, 313188, 313217, 3151692, 3151694, G09G 328

Patent

active

043365353

ABSTRACT:
This invention deals with an arrangement for incorporating a cursor feature into a plasma shift register display panel having a plurality of display channels. The cursor arrangement of the present invention is implemented by incorporating a separate cursor channel into such a display panel. The cursor channel is filled with an ionizable medium and has input, transfer and erase electrodes positioned on opposing walls thereof. The transfer electrodes are in turn arranged into four groups with two of the groups of electrodes being shared with the display channels of the panel. Through the synchronous application of suitable voltage potentials to the input, transfer and erase electrodes associated with the cursor channel, it is possible to input and transfer light dots through the cursor channel without having to regenerate the material being displayed by the panel and without fear of destroying the displayed material.

REFERENCES:
patent: 3336499 (1967-08-01), O'Meara
patent: 3775764 (1973-11-01), Gaur
patent: 3792301 (1974-02-01), Kessler
patent: 3795908 (1974-05-01), McDowell et al.
patent: 3872352 (1975-03-01), Sasaki et al.
patent: 3911422 (1975-10-01), McDowell et al.
patent: 3981001 (1976-09-01), Ogle
patent: 3996490 (1976-12-01), Miller
patent: 4127794 (1978-11-01), Frankland
patent: 4190789 (1980-02-01), Kawada et al.
patent: 4286265 (1981-08-01), Kauffman et al.

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