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1. (WO1991006923) RATIO DETECTION CHARACTER RECOGNITION APPARATUS
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1991/006923 International Application No.: PCT/US1990/006134
Publication Date: 16.05.1991 International Filing Date: 23.10.1990
IPC:
G06K 9/00 (2006.01)
G PHYSICS
06
COMPUTING; CALCULATING; COUNTING
K
RECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
9
Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
Applicants:
UNISYS CORPORATION [US/US]; Township Line and Union Meeting Roads P.O. Box 500 Blue Bell, PA 19424, US (AllExceptUS)
CANU, Jean, Pierre [FR/FR]; FR (UsOnly)
DESFORGES, Bernard [FR/FR]; FR (UsOnly)
HEUTTE, Gérard [FR/FR]; FR (UsOnly)
Inventors:
CANU, Jean, Pierre; FR
DESFORGES, Bernard; FR
HEUTTE, Gérard; FR
Agent:
STARR, Mark, T.; Unisys Corporation Township Line and Union Meeting Roads P.O. Box 500 Blue Bell, PA 19424, US
Priority Data:
892395924.10.1989GB
Title (EN) RATIO DETECTION CHARACTER RECOGNITION APPARATUS
(FR) APPAREIL DE RECONNAISSANCE DE CARACTERES PAR DETECTION DE RAPPORTS
Abstract:
(EN) An apparatus for recognising characters (20) on a document (10) comprises a scanning head (24) and decoding circuits (78, 72, 86, 92, 80), feeding a controller (84). The controller (84) detects the identity of the characters (20A - 20N) by calculating the ratio found by dividing the time between a first positive pulse (32) and a second positive pulse (34) by the time between the first positive pulse (32) and a last negative pulse (36) and comparing it against a stored table of ratios.
(FR) Un appareil de reconnaissance de caractères (20) sur un document (10) comprend une tête d'exploration (24) et des circuits de décodage (78, 72, 86, 92, 80) alimentant une unité de commande (84). L'unité de commande (84) détecte l'identité des caractères (20A-20N) en calculant le rapport trouvé en divisant le temps entre une première impulsion positive (32) et une seconde impulsion positive (34) par le temps entre la première impulsion positive (32) et une dernière impulsion négative (36) et en comparant ce rapport à une table de rapports mémorisés.
Designated States: JP, US
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LU, NL, SE)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
EP0451252US5151952DE000069032097GB2237914