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.)
Publication of BE279414ApublicationCriticalpatent/BE279414A/xx
Priority claimed from GB796345Aexternal-prioritypatent/GB594795A/en
H04L25/49—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 ; Baseband coding techniques specific to data transmission systems
H04L25/4902—Pulse width modulation; Pulse position modulation
