An occupant protecting device which makes it possible to inflate a bag of an inflatable seatbelt device or exerting a pre-tension upon a seatbelt by a gas generator for inflating a bag disposed at the front portion of a seat cushion. A data item of a predetermined type is received at a first device, the data item including a content URI for fetching content associated with the data item. The monitor device may thus accurately and rapidly monitor the quality of an input optical signal transmitted even at a higher bit rate. Each vertical leg has elevationally space adjustment holes. Scan-test vectors are generated from the netlist using automatic test pattern generation.