Switch device, data-processing apparatus and playback apparatus

摘要

A playback apparatus is provided, which comprises a switch device (200) that gives the user good feeling of operating. A tape-shaped switch (500) is provided on a base part (410), extending along the circumference of the base part (410). A ring-shaped rotational drive section (450) opposes the tape-shaped switch (500) and can move to and from the base part (410). A plurality of second rollers (440), each having a roller part (444) made of rubber or the like, are rotatably mounted on the rotational drive section (450). A flange (313) continuously extending outward from the disc-shaped table plate (311) of a jog table unit (310) is mounted on the rotational drive section (450). When the user rotates the jog table unit (310), the rotation-detecting section (470) provided on the base part (410) detects the rotation of the unit (310). The flange (313) is supported by the second rollers (440) at a position outside a position where the user touches the jog table unit (310) and rotates, so that the rotation of the jog table unit (310) can be reliably detected. The user can obtain good feeling of operating the switch device (200).