Patent ID: 7155659

Claim:
An error detection and correction circuit for detecting and correcting an error in an input signal containing a first signal and a second signal, comprising: a signal separation circuit for receiving the input signal and extracting the first signal and the second signal from the received signal, the signal separation circuit providing a switching signal; a selection circuit for selecting either the first signal or the second signal in the input signal to an error detection and correction unit depending on the switching signal input signal, the selected first signal or second signal providing an input to an error detection and correction unit; an error detection and correction unit for detecting and correcting an error in an output signal from the selection circuit; a switch circuit for receiving a switching signal from the signal separation circuit for outputting an output signal from the error detection and correction unit to either an output path for the first signal or an output path for the second signal; and a memory; and wherein the signal separation circuit separates the second signal from the input signal and sends the second signal to the memory; the memory stores the second signal until an amount of the stored second signal becomes a predetermined amount; and the error detection and correction unit receives the predetermined amount of the second signal where the amount of the second signal in the memory becomes the predetermined amount.