Unified Title Structure for Multi-Program DVD Playback
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Solution Overview
Problem
Conventional DVD technologies face difficulties in recording and reproducing multiple programs simultaneously, especially when programs are not aligned in time, leading to challenges in selecting and starting desired programs at arbitrary times, and users are confused when multiple content variations with different video resolutions, parental levels, or angles are recorded as separate titles.
Innovation Solution
An information record medium and apparatus that stores multiple content information sets with designated play list sets and title information, allowing for the recording and reproduction of multiple programs, video resolutions, parental levels, and angles as a single title, enabling easy selection and reproduction of desired content.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If multiple programs are recorded as separate titles in conventional DVD technology, then each program can be independently reproduced, but users become confused when multiple content variations (different video resolutions, parental levels, or angles) are recorded as separate titles
Solution Approach 1:
The patent combines multiple content variations (different video resolutions, parental levels, angles) that were previously stored as separate titles into a single title structure. This is achieved by organizing multiple play lists within one title, where each play list corresponds to different content variations. The user interface displays these variations as selectable options within the single title, eliminating the confusion of multiple separate titles while maintaining independent reproduction capability.
2Productivity
If multiple programs are recorded simultaneously in conventional DVD technology, then recording efficiency is improved, but selecting and starting desired programs at arbitrary times becomes difficult when programs are not aligned in time
Solution Approach 1:
The patent segments the title structure into multiple independent play lists, where each play list can represent a different program or content variation. This segmentation allows the reproduction apparatus to independently access and reproduce any play list within the title, enabling arbitrary program selection and start times without requiring programs to be time-aligned. The segmentation maintains recording efficiency while providing flexible access to individual programs.
3Device complexity
If conventional DVD technology records one play list as control information, then reproduction control is simplified, but multiple programs received simultaneously cannot be reproduced with the same flexibility as real-time reception
Solution Approach 1:
The patent creates a universal title structure that can accommodate multiple play lists, each representing different programs or content variations. This multi-functional title structure allows the reproduction apparatus to handle various scenarios: reproducing multiple simultaneous programs, selecting different content variations (resolutions, angles, parental levels), and providing flexible start times. The single title with multiple play lists replaces the need for separate titles, providing both simplified control structure and enhanced versatility.
Data Source
AI summary
An information record medium contains a plurality of content informations and a plurality of play list sets each including a plurality of play list informations defining the reproduction sequence of the content informations. In addition, the information recording medium contains title information designating at least one play list set, which corresponds to the content informations to be reproduced, from among the plurality of play list sets to reproduce the plurality of content informations as a title, the title being a logical information unit of the plurality of content informations.