Optics: image projectors – Selective data retrieval – Plural picture rows on single microcard
Patent
1975-09-08
1978-01-03
Stephan, Steven L.
Optics: image projectors
Selective data retrieval
Plural picture rows on single microcard
353 38, G03B 2308, G03B 2114
Patent
active
040663507
ABSTRACT:
A large number of characters are formed on a sheet such as microfiche. The characters are further divided into classes such as a class of Roman alphabet characters, a class of Japanese hiragana characters, a class of Japanese katakana characters and a plurality of classes of Chinese characters arranged phonetically according to their leading syllables. Each class contains a predetermined number of characters. The characters are arranged in an alternating arrangement on the microfiche which is movable relative to a mask formed with apertures in such a manner that at each position of the microfiche all of the characters of a corresponding class are displayed through the respective apertures of the mask. Class selection means comprising one or more switches control drive means to move the microfiche so that the desired class of characters is displayed. Character selection means allow selection of the desired character and feed an electrical signal corresponding thereto to an electric typewriter, computer, teletype device or the like. The character selection means may comprise a light pen or switches provided to the respective apertures of the mask.
REFERENCES:
patent: 3528735 (1970-09-01), Bluitt et al.
patent: 3809468 (1974-05-01), Moritz
patent: 3820884 (1974-06-01), Sone et al.
patent: 3853395 (1974-12-01), Yevick
patent: 3864034 (1975-02-01), Yevick
patent: 3951532 (1976-04-01), Kropp
Ataka Hisanori
Homae Taisaburo
Iida Katsuhiko
Koide Hiroshi
Jordan Frank J.
Ricoh & Company, Ltd.
Stephan Steven L.
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