Patent ID: 8630318

Claim:
A method for reverse data sampling of a data link in a mobile display digital interface (MDDI) system, the method comprising the steps of: sending a round trip delay measurement packet from a host to a client over the data link, the round trip delay measurement packet including a measurement period field having a duration and allowing the client to send to the host over the data link a data sequence during the duration of the measurement period field; measuring, by the host, a round trip delay of the data link by detecting a first bit of the data sequence sent by the client; determining a number of forward link clock periods per reverse data bit, the reverse data bit being a bit of the data sequence; computing a remainder of a division of the round trip delay by the number of forward link clock periods per reverse data bit; computing an offset by subtracting either one or two from the computed remainder; and determining a sampling point to start sampling reverse data based on the computed offset.