Hauv cov chaw taws teeb tswj kev sib kis, muaj ob hom circuits: tus encoder thiab 38kHz carrier signal generator. Nyob rau hauv daim ntawv thov uas tsis tas yuav multiplexing, ib tug tsawg tus naj npawb ntawm infrared chaw taws teeb tswj transmitters thiab receivers yuav tsim tau siv cov pa integrated circuits. Qhov Circuit Court no tsis tas yuav muaj cov codec nyuaj thiab yog li yooj yim los tsim.
Kev siv cov kev sib txuas lus infrared encoding raws tu qauv (xws li cov siv hauv TV xim, VCDs, thiab DVDs) ua tus encoder ntawm infrared transmitter yog qhov nyuaj rau cov kws tshaj lij hluav taws xob lossis cov neeg nyiam ua haujlwm. Txawm li cas los xij, rau cov chaw taws teeb tswj kev xa xov hluav taws xob nrog cov xov tooj tsawg, ib txoj kev faib ntau zaus (FDM) tuaj yeem siv los tsim cov encoder. Tsis tas li ntawd, rau ib qho -channel chaw taws teeb tswj Circuit Court, tus encoder tuaj yeem raug tshem tawm; tsuas yog xa tawm 38kHz infrared teeb liab tuaj yeem ua tiav lub hom phiaj tswj.