CPC Subgroup
H04L 25/49 using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels
Full Title
Baseband systems > Synchronous or start-stop systems, e.g. for Baudot code > Transmitting circuits; Receiving circuits > using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels
6 direct subcodes
Child Classifications
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- H04L 25/493 by transition coding, i.e. the time-position or direction of a transition being encoded before transmission
- H04L 25/497 by correlative coding, e.g. partial response coding or echo modulation coding