Abstract: An interface apparatus and method that may display an interface image by synthesizing a reference resonance frequency with the interface image, and may transmit a resonance occurrence frequency to the displayed interface image to generate a resonance between the reference resonance frequency and the resonance occurrence frequency to provide a user with sensory feedback.

Abstract: A variable search method for a recording medium containing video data and a reproducting apparatus using the same are provided. The method includes detecting and storing control information for each chapter of a title when the recording medium is inserted into a reproduction apparatus, performing a variable search mode including viewable speed reproduction on a first portion of the data content of the chapter, and performing a different speed reproduction on the remaining data content of the chapter on the basis of the stored data information. In this way, the contents of each chapter of the recording medium can be rapidly and accurately grasped. In addition, in the variable search mode, search and reproduction of the recording medium can be performed at various speeds from a lowest search speed to a highest search speed according to a user's selection.