Electronic typewriter with display device

Details Electronic typewriter with display device Electronic typewriter with display device

1980-02-12

1982-04-06

Sewell, Paul T.

Typewriting machines

Including control of format and selection of type-face by...

Including editing or revision system

400 22, 400 83, 4001442, B41J 530, B41J 346

Patent

active

043233155

ABSTRACT:
An electronic typewriter having a display device which shows just the last entered characters of a printing line. The typewriter comprises a selector for an immediate typing mode of the entered character, a line/line mode in which each line is set up in memory and typed on operating a service key, and a word/word mode in which the set up words are typed word by word, i.e. on each operation of the space bar. This facilitates typing with checking to eliminate all errors. The display device shows emphasized characters, different kinds of emphasis (heavy type, light type on dark background being indicated by different luminous dot patterns under the characters. The display device is of the dot matrix type and, by suitable circuits thereto superposed characters, e.g. 0 and 1 yielding .phi., are correctly shown.

REFERENCES:
patent: 3630336 (1971-12-01), Johnson et al.
patent: 3868673 (1975-02-01), Mau, Jr. et al.
patent: 3893558 (1975-07-01), Fulton et al.
patent: 4204206 (1980-05-01), Bakula et al.
IBM Tech. Disc. Bulletin, by J. S. Coehen et al., vol. 19, No. 8, Jan. 1977, p. 2821.

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