Method and apparatus for braille display of information from CRT

Details Method and apparatus for braille display of information from CRT Method and apparatus for braille display of information from CRT

1992-06-19

1993-09-14

Burr, Edgar S.

Typewriting machines

Typing by other than type-face or type-die

Character formation by impact

434114, 434115, 434411, B41J 332

Patent

active

052442888

ABSTRACT:
A method and apparatus whereby information appearing on a CRT screen (410) is separately displayed in braille, using a braille web (100) in a loop form and made partly or wholly from a shape memory resin. The information from a CRT screen (410) is input to the web (100) by a braille printer (300) at a temperature within a range below the glass transition temperature of the resin. After the information has been read by the user, the displayed web portion is heated above the glass transition temperature by a heating roller (200) so that the web recovers its original, non-braille shape. The web is conveyed by a driving roller (210) along with the heating roller (200) and a driven roller (220) in the directions indicated by arrows in FIG. 1 for repeated use.

REFERENCES:
patent: 2849752 (1958-09-01), Leary
patent: 3103074 (1963-09-01), Daugherty
patent: 3381299 (1968-04-01), Hu
patent: 3624772 (1971-11-01), Grumwald
patent: 4586903 (1986-05-01), Burchart
patent: 4670794 (1987-06-01), Araki et al.

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