Patent ID: 7450039
Filing Date: 2008-11-11
Classification: H03K,H03M

Abstract:
1. A transmission device for transmitting data signals and a clock signal in one direction to a reception device, the clock signal being used for reproducing the data signals on the reception device side, the transmission device comprising: one or more parallel/serial conversion units for converting one or more pieces of n-bit parallel data, where n is an integer of two or more, into one or more pieces of serial data, and transmitting the one or more pieces of serial data to the reception device as one or more data signals; a clock signal transmission unit for transmitting the clock signal to the reception device; a known-parallel data generation unit for generating known n-bit parallel data as known parallel data when the transmission device makes a self-diagnosis as to whether the transmission device is operating normally, and inputting the generated known parallel data into the one or more parallel/serial conversion units; a shift unit for, when the transmission device makes the self-diagnosis, sequentially shifting a temporal difference between the clock signal and a data signal by 1 UI of the data signal, the data signal being obtained by serializing the known parallel data; one or more sampling units for, when the transmission device makes the self-diagnosis, sampling the data signal obtained by serializing the known parallel data, in accordance with the clock signal temporally different from the data signal; and a diagnostic processing unit for making a diagnosis as to whether the transmission device is operating normally by comparing sampling results obtained by the one or more sampling units with the known parallel data generated by the known-parallel data generation unit, and outputting a result of the diagnosis.