Patent ID: 7697605

Claim:
A signal transmitting/receiving system comprising: a transmitter configured to transmit signals; and a receiver configured to receive the signals transmitted from the transmitter; wherein the transmitter transmits signals using; (a) first signal having an edge at a position that is 1/n from the beginning of a unit segment; and (b) second signal having an edge at a position of (n−1)/n from the beginning of the unit segment, wherein; (i) n is an integer greater than or equal to three; and (ii) one of the first signal and the second signal representing logic “0” and the other representing logic “1”; and wherein the receiver; (a) detects a reception interval based on: (i) said edge at the position that is 1/n from the beginning of the unit segment; and (ii) said edge at the position of (n−1)/n from the beginning of the unit segment; (b) determines whether the reception interval is a start signal interval by determining whether the reception interval includes any of a first set of a first plurality of lengths; (c) determines whether the reception interval is a data end interval by determining whether the reception interval includes any of a second set of a second plurality of lengths, wherein each of said lengths of the second set are different from each of the lengths of the first set; (d) sets a first logic by determining whether the reception interval includes a third length, wherein said third length is different from; (i) each of the lengths of the first set; and (ii) each of the lengths of the second set; and (e) sets a second different logic by determining whether the reception interval includes a fourth length, wherein said fourth length is different from; (i) each of the lengths of the first set; (ii) each of the lengths of the second set; and (iii) said third length.