Abstract: A video signal recording apparatus equipped with circuits to record a time code signal and a control signal relative to a tape position at a speed higher than a normal recording speed, whereby the time required for recording such signals can be widely shortened to reduce the time of the editing operation, hence enhancing the operational efficiency. Furthermore, the frequency of a bias signal is set to be higher than recordable signal frequencies determined in accordance with the normal tape speed, so that undesired generation of noise that may otherwise be derived from such bias signal can be prevented during the reproduction.

Abstract: A viscous and rubber-type torsional damper including a boss portion, a pulley portion, and connecting members for elastically connecting the boss portion and the pulley portion. The connecting portions are spaced from each other in an axial direction of the torsional damper and define a fluid-tight closed space therebetween. At least one protrusion is formed on at least one of the boss portion and the pulley portion. The protrusion protrudes into the closed space and a gap is formed between the surfaces of the protrusion and the surfaces opposing the protrusion. The area between the surfaces is filled with a viscous fluid such as a silicone oil. Due to this structure, the viscous damping ability of the damper is increased without increasing the radial size of the damper and without increasing the number of constructing members of the damper.