Patent ID: 6628213
Filing Date: 2003-09-30
Classification: H03M

Abstract:
A Coded-Marked-Inversion (CMI) coding method for converting a first signal (511) and a second signal (512) to a CMI code (517, 817), comprising the steps of:converting the first signal to a CMI code while determining (515, 812) according to a predetermined rule whether the second signal should be superposed on the first CMI-coded signal; when the second signal is superposed, converting the first signal in a certain time slot (110) of a plurality of first signal time slots to the first code according to a CMI coding rule different from that applied to the CMI code; converting two binary bits of the first signal, the two bits being originally disposed in the time slot (110) where the first code is to be brought and the next time slot (120) thereof, to a second code (130) according to the different CMI coding rule, and inserting the second code into the next time slot; and converting the first signal and the second signal to the CMI code (517, 817) and outputting it.