Multi-character display controller for text recorder

Typewriting machines – Logotype typewriter – Actuation of single key types plural characters

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Details

400 83, B41J 302

Patent

active

044640706

ABSTRACT:
A text recorder includes a multi-character display controller which is operated in a multi-character mode to record (e.g., print on paper or generate a CRT or the like display) multi-character sequences in response to operator actuation of a single key of a keyboard substantially identical to a conventional typewriter keyboard. Operator actuation of a key generates a coded signal representative of the actuated key, but in the multi-character mode, the normal text recorder function of printing or displaying the character associated with the key is inhibited, and instead, a memory device is accessed which has stored at a location corresponding to the actuated key, a sequence of coded signals representative of a plurality of characters, functions or both. The storage device may include a plurality of sets of stored signal sequences representing a plurality of multi-character sequences, the selection between the different storage sets being effected based on a particular key or key sequence previously actuated. Particular keys suitable for use in a multi-character mode are keys representing numeric characters, symbol graphics, or various punctuation marks. The invention is applicable to text recorders designed for use with English or foreign languages.

REFERENCES:
patent: 1275657 (1918-08-01), Bullock
patent: 2717686 (1955-09-01), Seeber, Jr.
patent: 3289804 (1966-12-01), Schaefer
patent: 3630336 (1971-12-01), Johnson et al.
patent: 3820644 (1974-06-01), Yeh
patent: 4010837 (1977-03-01), Gremillet
IBM Technical Disclosure Bulletin, "Word Generation System for Typist" Arellano et al., vol. 17, No. 8, Jan. 1975, pp. 2422-2423.
IBM Technical Disclosure Bulletin, "Abbreviated Typing for Word Processing", Todd, vol. 21, No. 9, Feb. 1979, pp. 3796-3797.

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