A method for manufacturing a solid state imaging device includes steps of forming a photodiode layer buried in a semiconductor substrate by ion injection and of forming a shielding layer buried in the photodiode layer by ion injection. A next step includes determining a voltage mismatch between the phases. The head portions include a slot. A data processing unit corrects the second output based on the first output. According to the method, quality modifications of a transmission channel used as a connection between a data source and data sinks are detected and, according to the detected quality modification, a data packet type of a successive data packet to be transmitted via the transmission channel is selected.