Inventors:
Robert W. Zehner - New York NY, US
Holly G. Gates - Somerville MA, US
Karl R. Amundson - Cambridge MA, US
Joanna F. Au - Brighton MA, US
Ara N. Knaian - Newton MA, US
Jonathan L. Zalesky - Watertown MA, US
Alexi C. Arango - Somerville MA, US
Assignee:
E Ink Corporation - Cambridge MA
International Classification:
H04N 1/46
US Classification:
345 89, 345 36, 345 48, 345 77, 345 84, 345210, 345214, 358455, 358519, 382169
Abstract:
A bistable electro-optic display has a plurality of pixels, each of which is capable of displaying at least three gray levels. The display is driven by a method comprising: storing a look-up table containing data representing the impulses necessary to convert an initial gray level to a final gray level; storing data representing at least an initial state of each pixel of the display; receiving an input signal representing a desired final state of at least one pixel of the display; and generating an output signal representing the impulse necessary to convert the initial state of said one pixel to the desired final state thereof, as determined from said look-up table. The invention also provides a method for reducing the remnant voltage of an electro-optic display.