Device and method for advanced Bayesian Kalman time estimation

摘要

A method and device are disclosed for calculating estimated time stamps ìt in video distribution apparatus, MPEG-2 program encoders, multiplexers, splicers. True times Yt of a data packet number t having the linear form:with etat being a small perturbation relative to the linear relation between time and packet number. The true times of data packet number t are observed as: ot=Yt+epsit, where epsit is an observational error. The estimated time stamps are produced according to: ìt=ìt-1+betat and such that the value of betat is made dependent on the exceeding by #ot-ìt-1-betat-1 # of max[epsit]. The results are accurate and smooth estimated time stamps.