Error detection apparatus for an electro-optic display

Details Error detection apparatus for an electro-optic display Error detection apparatus for an electro-optic display

1994-04-18

1996-05-07

Beausoliel, Jr., Robert W.

Excavating

371 24, 371 671, 324 731, 345 33, 345 34, 345 41, 345 50, 345 87, G06F 1100

Patent

active

055153909

ABSTRACT:
An apparatus for and method of detecting errors in an electro-optic display of a type comprising one or more capacitive display elements. Each display element is connected to drive circuitry. The apparatus includes an isolator for electrically isolating the first electrode of a display element to be tested from the drive circuitry. A comparator compares a voltage on the first electrode of the element being tested with a reference voltage, and an error signal generator generates an error signal if the voltage on the first electrode crosses the reference voltage within a predetermined period of time.

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patent: 5093654 (1992-03-01), Swift et al.
patent: 5160920 (1992-11-01), Harris

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