Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filedfiledCritical
Priority to NL6919052ApriorityCriticalpatent/NL6919052A/xx
Priority to FR6944887Aprioritypatent/FR2027065A1/fr
Publication of NL6919052ApublicationCriticalpatent/NL6919052A/xx
H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
H04N1/41—Bandwidth or redundancy reduction
H04N1/411—Bandwidth or redundancy reduction for the transmission or storage or reproduction of two-tone pictures, e.g. black and white pictures
H04N1/413—Systems or arrangements allowing the picture to be reproduced without loss or modification of picture-information
H04N1/4135—Systems or arrangements allowing the picture to be reproduced without loss or modification of picture-information in which a baseband signal showing more than two values or a continuously varying baseband signal is transmitted or recorded