MULTICHANNEL ENCODER AND DECODER WITH EFFICIENT TRANSMISSION OF POSITION INFORMATION

摘要

A receiver (603) receives a position given by a first value representing a first position parameter and a second value representing a second position parameter. A match circuit (605) determines if the second value matches a nominal value. If so, an output circuit (609) generates output data including data representing the first value in a field of the output data but not including data representing the second value in the output data. Otherwise, the output circuit (609) includes data in the field which represents an invalid position value for the first position parameter. A receiver determines if data of a data field represents a valid position value for the first position parameter. If so, it determines a position with the first value being the valid position value and the second value being a nominal value for the second position parameter. Otherwise it determines the second value from a second field of the input data.