Patent ID: 8818320

Claim:
A receiver comprising: an antenna unit that is able to receive a transmission signal transmitted from a communication subject alternately at a plurality of different reception levels; a wave detection unit that wave-detects the transmission signal received by the antenna unit to generate a detection signal, wherein the detection signal has a signal level that becomes a fixed value in accordance with the transmission signal when the antenna unit receives the transmission signal at a reception level that is greater than or equal to a reception limit threshold at which the transmission signal can be normally received, and the detection signal has a signal level that becomes a non-fixed value when the antenna unit receives the transmission signal at a reception level that is less than the reception limit threshold; and a correction unit that, when the detection signal includes a fixed value session and a non-fixed value session, changes a signal level of the non-fixed value session to a level equivalent to a signal level of the fixed value session adjacent in time to the non-fixed value session, wherein the fixed value session is defined by a duration of the fixed value of the detection signal and the non-fixed value session is defined by a duration of the non-fixed value of the detection signal.