Communications: electrical – Systems – Portable self-contained
Patent
1975-04-25
1977-03-22
Trafton, David L.
Communications: electrical
Systems
Portable self-contained
235 92EA, 324122, 340166EL, G01D 700
Patent
active
040140113
ABSTRACT:
A display having variable resolution includes a plurality of discrete light emitting elements arranged in an array. Intervals between elements are quantized into a plurality of levels representing information to be displayed. Selected light emitting elements disposed about the levels are energized by a signal having a duty cycle varied in response to displayable information having a magnitude within a particular one of the plurality of levels.
REFERENCES:
patent: 3754121 (1973-08-01), Delay et al.
patent: 3824581 (1974-07-01), Ohno
patent: 3825827 (1974-07-01), Tumbush
patent: 3833933 (1974-09-01), Wilson
patent: 3866120 (1975-02-01), Ford
patent: 3914758 (1975-10-01), Ingle
Hewlett--Packard Company
Park Theodore S.
Trafton David L.
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