Patent ID: 7401100

Claim:
A reproducing apparatus for reproducing contents, the reproducing apparatus comprising: a storage unit which receives contents including interactive contents and audio visual (AV) contents from a storage medium and/or a distributed network; a control unit arranged to control reproduction of the interactive contents and AV contents, via a display device, the control unit comprising: a synchronized multimedia element determining unit, which parses and interprets interactive contents including multimedia elements, determines whether multimedia elements included in the interactive contents are synchronized with the AV contents; and an application program interface (API) transmitting unit, which transmits an API corresponding to an interactive control command Input from a user to an AV contents reproducing engine that reproduces the AV contents and a synchronized multimedia element reproducing engine that reproduces the multimedia element that are determined to be synchronized with the AV contents by the synchronized multimedia element determining unit, such that the multimedia elements are synchronized and mixed with the AV contents for a visual display on a screen of the display device.