Telegraphy – Systems – Printing
Patent
1978-09-18
1980-05-20
Robinson, Thomas A.
Telegraphy
Systems
Printing
178 23R, G11C 1700, H04L 1308, H04N 578
Patent
active
042040906
ABSTRACT:
In a system in which characters or graphic patterns are representd in punctiform fashion, the redundancy of binary character sequences which describe the characters or graphic patterns is reduced such that, within the binary character sequences, each binary character having a first binary value is assigned to a point which is to be represented and at least one interval corresponding to one element exist between two points represented by the same output component. Each element is split into a plurality of sub-elements and the binary character sequences which represent the characters or graphic patterns are split into sub-elements. Of the possible combinations (2.sup.n) of a group (n) of binary characters of the binary character sequences, code words are assigned to those combinations in which the binary character having a predetermined binary value ("1") is followed by at least one number (k-1) of binary characters having another predetermined binary value ("0"), which number is dependent upon the number (k) of sub-elements within an element. The code words are transmitted and/or stored in place of the binary character sequences and in the representation of characters or graphic patterns code words are reassigned the original binary character sequences which are then fed to the output components. A scanning device is provided to scan a format which has a graphic pattern and emits binary character sequences to an encoder which assigns the code words to the binary character sequences and/or a memory is provided in which the code words of given characters or graphic patterns are stored and a decoder is provided which is supplied with the code words from the encoder or from the memory, the decoder operating to assign the binary character sequences to the code words and emit the latter to the output components.
REFERENCES:
patent: 3902008 (1975-08-01), Ogawa
patent: 4107457 (1978-08-01), Hajduk
Robinson Thomas A.
Siemens Aktiengesellschaft
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