Design of decoder with auto-study function for the encoding IC PT2262
Junqiu Li · Electronic Design Engineering · 2011
Traditional decoder method exists the problem that it only can be used for a particular oscillation frequency waveforms decoding.In order to improve its limitation,a kind of decoder with auto-study function for the encoding IC PT2262 was designed based on MCU.This decoder can accomplish decoding based on the parameters of Rosc which is obtained from transmitter circuit through self-learning,even though the oscillation resistance parameters of transmitter circuit were unknown.Moreover,it broke through the limit of only 4 to 6 data bit and the coded data frame format can be defined according to the application fields.Experiments show that decoding accuracy rate achieves 99.8 percent which under the circumstances of 200 meters transmission distance.