EP 0132456 B1 19880203 - METHOD AND DEVICE TO CHECK THE SENTENCE QUALITY OF PRINTED MATTER, IN PARTICULAR FOR NEWSPAPERS
Title (en)
METHOD AND DEVICE TO CHECK THE SENTENCE QUALITY OF PRINTED MATTER, IN PARTICULAR FOR NEWSPAPERS
Publication
Application
Priority
EP 83107480 A 19830729
Abstract (en)
[origin: US4667247A] Record quality of a bit map of a newspaper page, for example, is checked directly on a display screen without previously manufacturing a material image carrier, such as a film. For this purpose, it is read out in multi-line fashion, preferably in 4 - line fashion. Squares consisting of m (preferably likewise 4) successive points of n (preferably 4) superimposed lines are grouped into one "superpixel" each, and its gray value, for example, is determined as an average of the black-white values of the individual pixels forming the square. The superpixel is displayed with its gray value as a single point on the display screen instead of the mxn square.
IPC 1-7
IPC 8 full level
B41B 23/00 (2006.01); B41B 27/00 (2006.01); G09G 5/391 (2006.01)
CPC (source: EP US)
B41B 27/00 (2013.01 - EP US); G09G 5/391 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0132456 A1 19850213; EP 0132456 B1 19880203; AT E32390 T1 19880215; AU 3128684 A 19850131; DE 3375613 D1 19880310; JP S6073847 A 19850426; SU 1429929 A3 19881007; US 4667247 A 19870519
DOCDB simple family (application)
EP 83107480 A 19830729; AT 83107480 T 19830729; AU 3128684 A 19840730; DE 3375613 T 19830729; JP 15773884 A 19840730; SU 3778328 A 19840727; US 63496184 A 19840727