A ferritic non-ridging stainless steel and process therefor. The backlight module includes a light source, an aluminum extrusion, and a backplane. The image forming apparatus displays on a display unit the list of print jobs received in the receiving, and in the displaying, a list of the print jobs, for which a user name of the user authenticated in the authenticating and a job owner name of the print job match, and a list of print jobs for which a job owner name is unknown is displayed. A controller detects Transmission Time Interval synchronization of the received BCH using the CRC check result and a result obtained by comparing a difference between the zero state path metric and the minimum path metric with a threshold. In the case of transferring data packets containing an AV stream and exchanging control packets containing control information regarding transfer of the data packets, different logical channels are assigned to the data packets and the control packet so that the data packets and the control packet are transferred by these different logical channels.