US 3,938,099 AGranted

Electronic digital system and method for reproducing languages using the Arabic-Farsi script

AssigneeAlephtran Systems Ltd.

InventorSyed Salahuddin Hyder

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Abstract

A system for mechanically reproducing language characters in a cursive form in accordance with the natural style calligraphy of the language. Written letters are characterized by "links" with preceding and following characters, and mathematical rules describe the cursive script in terms of the form each letter takes dependent upon the preceding and following characters. The system includes input means for inserting characters, one at a time, and for providing coded representations of the characters. The coded representations are fed to decoder means which has as an output a selected combination of concatenation properties applicable to the character. Analyzer means analyzes variables dependent on the concatentation properties of a successive string of characters which comprise a character under consideration, a preceding character and a following character. The analyzer means then provides a further coded representation of a particular concatenation property applicable to the character under consideration when the character under consideration is preceded by the preceding character and followed by the following character. The coded representation and the further coded representation are combined in a combining means to provide a composite coded representation containing information relative to a character and to its applicable concatenation properties. Means are provided for converting the composite code to a code suitable for driving output means.

A system for mechanically reproducing language characters in a cursive form in accordance with the natural style calligraphy of said language, wherein a plurality of j cancatenation properties is associated with said natural style calligraphy, a selected combination of said cancatenation properties being applicable to each character of said language characters, said selected combination comprising an integral number of said concatenation properties equal in number from j to O where j is an integer;

said system comprising;
a. input means for inserting characters one at a time and for providing coded representations of characters which do concatenate and coded representations of characters which do not concatenate,
b. said input means providing coded representations associated with spaces between groups of characters,
c. decoder means for receiving said coded representations of said characters for providing output signals associated with said coded representation,
d. said decoder means providing a first group of output signals associated with said coded representation of characters which do not concatenate, and a second group of output signals associated with said coded representation of characters which do concatenate,
e. means responsive to said output signals from said decoder means for storing coded representations of a successive string of characters comprising a character under consideration, a preceding character and a following character,
f. means for analyzing said stored coded representations of said successive string of characters according to the concatenation properties of said character under consideration, said preceding character and said following character, said analyzer means providing further coded representations whereby said further coded representations are representative of the applicable concatenation property,
g. means for combining said coded representations from said input means with said further coded representations to provide a composite coded representation containing information corresponding to said character under consideration and its applicable concatenation property, and
h. output means for receiving said composite coded representations for reproducing said characters with the natural style calligraphy.

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Abstract

Claims6