A speed ratio shaft control for multiple ratio vehicle transmission has controlled release of an off-going transmission clutch and controlled engagement of an on-coming transmission clutch during a speed ratio upshift, at least one clutch being a friction torque establishing clutch. The semiconductor laser device includes a first light emission region, a second light emission region, a saturable absorption region sandwiched by the foregoing light emission regions, a first electrode, and a second electrode. First and second strip-shaped side-surface electrodes are formed on opposite side surfaces of the laminated body, and are connected to input and output terminals of the terminal layer, respectively. An end of the first axis adjustment bar is secured to a first object. The original information is recovered from an inbound message which contains the obscured information by reversing the processing used for the obscuring.