Sub-video Control Information for DVD Display Efficiency
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current DVD technology faces challenges in quickly and efficiently performing complex display controls for sub-picture information, such as dynamic display and highlighting buttons, due to the time-consuming process of reading and processing control information, leading to increased processing load and potential interruptions in continuous reproduction.
Innovation Solution
The proposed solution involves an information record medium that includes sub-video information and sub-video control information with type indication information, allowing for efficient display control of sub-picture elements by selectively reading and applying control information elements, enabling dynamic display, shading, and highlight controls over the main-video.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If sub-video control information is read and processed to perform display control, then display control capability is improved, but processing time increases and continuous reproduction may be interrupted
Solution Approach 1:
The patent applies preliminary action by pre-organizing control information into distinct packets (SPC packets) that contain display control instructions. These packets are prepared and structured in advance during encoding, allowing the player to efficiently retrieve and process only necessary control information during playback without interrupting continuous reproduction. The control information is preliminarily segmented into manageable units that can be quickly parsed and applied.
Solution Approach 2:
The patent segments control information into separate SPC packets that are distinct from video data packets. This segmentation allows the player to independently process control information without being burdened by the full video data stream. The control packets contain specific display control instructions (such as sub-picture display control, button highlight control) that can be quickly extracted and executed, reducing overall processing time while maintaining versatile display control capability.
2Productivity
If control information is selectively read and processed, then processing load is reduced, but control precision and effectiveness may deteriorate
Solution Approach 1:
The patent applies local quality by providing different types of control information packets for different display control needs. Each SPC packet contains specific control instructions tailored to particular display requirements (such as sub-picture positioning, button highlighting, menu display). This localized control approach allows the player to process only the specific control information needed for each display scenario, maintaining high control precision while improving processing efficiency by avoiding unnecessary control data processing.
Solution Approach 2:
The patent introduces SPC packets as intermediary structures that mediate between the encoded video data and the player's display control system. These packets serve as a standardized interface that carries control instructions in a structured format, allowing selective reading and processing without losing control precision. The intermediary packets enable efficient parsing and execution of control commands while maintaining the integrity and precision of display control instructions.
3Adaptability or versatility
If complex display control is implemented, then content reproduction sophistication is improved, but device complexity increases
Solution Approach 1:
The patent extracts display control information from the main video data stream and places it into separate SPC packets. This extraction allows complex display control functionality to be implemented without increasing the complexity of the core video decoding system. The player can selectively process control packets independently from the main video playback pipeline, enabling sophisticated content reproduction (such as interactive menus, sub-picture overlays, button highlights) while maintaining a relatively simple and efficient device architecture.
Data Source
AI summary
An information record medium comprises video information for indicating a main-video, sub-video information for indicating a sub-video which can be displayed at least partially over the main-video, and sub-video control information including (i) a plurality of types of control information elements for display control of the sub-video information in various methods set in advance and (ii) type indicating information to indicate presence or absence, or effectiveness or ineffectiveness of the control information elements by each of the types.