Initial input value and coded output value mapping device, has multiplexing device to reroute coded data applied at data inputs to data output when control input receives control signal indicating initial input value

摘要

The device has a multiplexing device (10) with a control input (16), a set of data inputs (14a-14h) and a data output (18). The multiplexing device reroutes coded data applied at the data inputs to the data output when the control input receives a control signal indicating initial input value. A coded data providing device (12) applies data coded by coding key to the data inputs. An independent claim is also included for a method of mapping between an initial input value and a coded final output value.