Enhanced navigation system using digital information medium

Abstract

A new navigation function is added to a legacy DVD-Video. A player unit plays back recorded contents, that include video contents or AV contents and ENAV contents associated with contents (menu, chapter) of the video contents, from a DVD-Video disc. The video contents of the DVD disc are played back by a video playback engine. The ENAV contents of the DVD disc are played back by an ENAV engine. The ENAV engine controls playback of the ENAV contents and that of the video contents in combination, connection, and / or synchronism with each other according to the played-back contents of the ENAV contents.

Description

technical field [0001] The present invention relates to an enhanced navigation system using digital information media conforming to the DVD-Video standard. [0002] More specifically, the present invention relates to a DVD-Video playback system which obtains navigation information from recorded content on a DVD-Video disc and / or from the Internet, etc., and allows the navigation information obtained to Diversify playback. Background technique [0003] Currently, DVD-Video has become increasingly popular as a packaging medium for digital video. DVD-Video is specified by [DVD Specification for Read-Only Disc: Part Three: Video Specification: Version 1.0 (Confidential)] issued by the DVD Forum in August 1996. [0004] The DVD-Video standard stipulates recording of expression data of real video / audio (or AV) data and navigation data for managing such data. In this standard, expression data (playback information) including video (moving picture / still picture) data, audio data,...

AI Technical Summary

Problems solved by technology

However, this invention does not have a function of selecting various display methods such as a method of displaying only information on a disk, a method of displaying only information obtained from the Internet, and a method of displaying these information at different times as desired.

Specifically, Japanese Patent Application KOKAI 11-98467 does not describe how to control the information obtained from the Internet according to the playback state of the DVD disc

Also, this invention does not have any function of giving these display method switching timings based on user instructions or playback control information recorded in advance on the disc (or playback control information downloaded from the Internet)

[0013] Furthermore, since the invention of this reference does not actually consider compatibility with the current DVD-Video standard (version 1.0), it is not clear how to control a real DVD-Video disc when interactively controlling a real DVD-Video disc using information downloaded from the Internet or the like Playback content (video content) of the video disc (more specifically, type and timing of control signals, and their origin and destination)

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