method for coding of informationssignalen and implementation of this procedure with the betreibbarer (encoder and decoder

摘要

1,189,982. Facsimile transmission systems. XEROX CORP. 13 June, 1967 [15 June, 1966], No. 26808/66. Headings H4F and H4P. In a delta encoder each block of binary data in a sequence of blocks is compared, bit by bit, with the preceding block and the comparator output transmitted. The encoder is used in a facsimile system in which each line scan produces one block of data. To ensure that transmission errors do not cause smear throughout the reproduced image every Nth block is transmitted without encoding. Alternatively successive segments of successive blocks are transmitted unencoded.