Playback speed control apparatus and playback speed control method

摘要

A playback speed control apparatus, which controls play-back speed according to rotation of an operation unit (15) that is rotatable, includes: a rotation speed detection unit (15c) that detects rotation speed of the operation unit; and a control (291) unit that controls the playback speed according to the rotation speed detected by the rotation speed detection unit, in which the control unit either increases or decreases the playback speed according to a recursive pattern of the rotation speed detected by the rotation speed detection unit.

主权项

1. A playback speed control apparatus that controls playback speed of data retrieved from a recording medium according to a detected rotation of a rotatable jog dial, the apparatus comprising:
a rotation speed detection unit that detects a rotation speed of the jog dial to determine periods of acceleration and deceleration of the rotation of the jog dial; and a control unit that controls a relationship of the playback speed to the rotation speed detected by the rotation speed detection unit, wherein the control unit increases the relationship of the playback speed to the rotation speed of the jog dial when the rotation speed detection unit detects a recursive pattern that includes cycles of short acceleration followed by longer deceleration in the same direction within a predetermined period and returns the playback speed to a normal playback speed when the rotation speed detection unit no longer detects the recursive pattern including short acceleration and longer deceleration in the same direction within a predetermined period.