Communications: electrical – Continuously variable indicating – With meter reading
Patent
1981-10-20
1984-01-24
Curtis, Marshall M.
Communications: electrical
Continuously variable indicating
With meter reading
340784, 340793, 350332, 358241, G09G 336
Patent
active
044279795
ABSTRACT:
Process for the control of an optical characteristic of a material intercalated between two electrodes to which are applied excitation signals, wherein in order to bring about an excitation of the material a series of elementary signals is applied to the electrodes for increasing periods of time, each elementary signal either being equal to a constant or zero, all these elementary signals constituting a decomposition of the desired excitation into a given base.
An application is in the field of optoelectronics and more particularly in the control of liquid crystal cells.
REFERENCES:
patent: 4006298 (1977-02-01), Fowler
patent: 4180813 (1979-12-01), Yoneda
patent: 4193095 (1980-03-01), Mizushima
patent: 4319239 (1982-03-01), Stephens
Clerc Jean F.
Robert Jacques
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