Patent ID: 8295408

Claim:
A receiving apparatus comprising: differential single converters each for subjecting differential signals inputted from a transmission line to differential amplification to be outputted as a single ended signal; a first amplitude detector coupled to a first one of said differential signal detectors for comparing the single ended signal with a higher reference voltage as a predetermined voltage; and a second amplitude detector coupled to a second one of said differential signal detectors for comparing the single ended signal with a lower reference voltage as a second predetermined voltage, wherein if the first amplitude detector detects that amplitude of the single ended signal is larger in value than the higher reference voltage, the first amplitude detector determines that the differential signal is a first level signal, wherein if the second amplitude detector detects that the amplitude of the single ended signal is smaller in value than the lower reference voltage, the second amplitude detector determines that the differential signal is a second level signal, and wherein if the first amplitude detector detects that the amplitude of the single ended signal is smaller in value than the higher reference voltage, and the second amplitude detector detects that the amplitude of the single ended signal is larger in value than the lower reference voltage, the present differential signal is determined as the second level signal in the case where an immediately preceding differential signal is determined as the first level signal while the present differential signal is determined as the first level signal in the case where the immediately preceding differential signal is determined as the second level signal.