Patent ID: 7369609

Claim:
An apparatus for receiving transmitted data, comprising: a receiver for receiving an encoded data stream, the encoded data stream generated by encoding a data stream by a duty factor representing a value of the data in the data stream; and a decoder, communicatively coupled to the receiver, the decoder for decoding the encoded data stream according to the duty factor of the encoded data stream; wherein the decoder comprises means for determining if the duty factor of the encoded data stream exceeds 50%; means for assigning a first value to the data stream if the encoded data stream exceeds 50%; and means for assigning a second value to the data stream if the encoded data stream does not exceed 50%; and wherein the means for determining if the duty factor of the encoded data stream exceeds 50% comprises a delay line, comprising N+1 stages including a zero th stage and an N th stage, each stage comprising a multiplexer and a delay element, each multiplexer controlled by a first input s 0 coupled to the encoded data stream and clearable by a second input s 1 ; wherein the multiplexer of the zero th stage is provided a high logical state input and the multiplexer of the N th stage is provided with a low logical state input; wherein each delay element of each stage i =1, 2, . . . N−1 is communicatively coupled to a multiplexer input of the (i+1) th stage and a multiplexer input of the (i−1) th stage; a delay line output, communicatively coupled to an output of the delay element of the zero th stage; and a memory device having an input communicatively coupled to the delay line output and a clock input communicatively coupled to the encoded data.