Dynamic decoding of communication between card reader and portable device

摘要: The proposed technology generally relates the field of data transmission, in particular it to decoding an encoded signal received at audio interface a portable electronic device, wherein is with encoding scheme having adjustable encoder clock frequency. method comprises preprocessing S1 signal; scanning S2 for known start sequence and when successfully detected then calculating S3 actual frequency based on sequence; interpreting S4, block succeeding using assessed frequency; assessing S5 whether request adjustment and/or interpretation S4. performed communications device well as corresponding computer program.