Method and system for two-dimensional traveling display and driv

Details Method and system for two-dimensional traveling display and driv Method and system for two-dimensional traveling display and driv

1980-12-20

1983-05-31

Trafton, David L.

Communications: electrical

Land vehicle alarms or indicators

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

3151692, 340792, 340800, 377 67, G09G 328

Patent

active

043863515

ABSTRACT:
A two-dimensional traveling display method and apparatus for displaying data that may be continuously or intermittently changing in a manner of a traveling sign with the traveling display moving either left, right, up or down depending upon a desired format. The display comprises an electrically actuated two-dimensional dot matrix display panel formed by a plurality of rows and columns of dot-like areas whose light modifying characteristics are changed by application of electrical energization potentials. The panel is provided with respective sets of row and column electrodes for selective application of energization potentials to selected ones of the dot-like areas to form a desired image. A display matrix driver circuit comprised by a two-dimensional shift register is provided for selectively applying electrical energization potential to the row and column electrodes of the two-dimensional dot matrix display panel in accordance with data whose image is to be displayed and which is stored in the shift register. The individual cells of the shift register are applied to either the column or row electrodes of the display panel and a time division multiplexing circuit provides discrete waveform multiplexing electric signals unique to particular ones or the other of either the row or column electrodes for causing desired ones of the dot-like areas of a liquid crystal display to be energized in accordance with data whose image is to be presented and for moving the image left, right, up or down in the manner of a traveling sign.

REFERENCES:
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patent: 4308534 (1981-12-01), Yamamoto
R. C. Minnick; "Cutpoint Cellular Logic"; IEEE Transactions on Electronic Computers, Dec. 1964, pp. 685-698.

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