Playback Device Graphics Stream Stereoscopic Mode Switching
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current playback devices face challenges in providing a range of product types with high-quality stereoscopic effects and cost-effective production, as well as issues with seamless mode switching and quality maintenance during stereoscopic playback, which limits market expansion and user experience.
Innovation Solution
A playback device with a stream number register and capability register that allows selection between monoscopic and stereoscopic playback types, enabling the manufacturer to control stereoscopic effects and maintain quality, while also supporting immediate stereoscopic playback and seamless mode switching.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the design concept of always assuring the stereoscopic effect for the graphics is adopted, then the stereoscopic effect is maintained for all graphics, but the product cost increases and manufacturing complexity increases
Solution Approach 1:
The patent applies partial stereoscopic effect to graphics streams only when necessary (when the video stream is in stereoscopic mode and the graphics stream requires depth representation). The system selectively applies offset control to achieve stereoscopic effect for graphics rather than always applying it universally, thus reducing unnecessary hardware complexity and cost while maintaining reliability where needed.
Solution Approach 2:
The system changes the playback mode parameter of the graphics stream dynamically based on the video stream's stereoscopic mode. When the video is in monoscopic mode, the graphics stream is played back in monoscopic mode. When the video switches to stereoscopic mode, the graphics stream automatically switches to stereoscopic mode with appropriate offset control, achieving adaptability without requiring separate hardware paths.
2Ease of manufacture
If the design concept of not assuring the stereoscopic effect for the graphics is adopted, then the production cost is reduced, but the quality of stereoscopic playback deteriorates for certain graphics
Solution Approach 1:
The system dynamically adjusts the playback mode of the graphics stream based on real-time detection of the video stream's stereoscopic mode. The graphics stream automatically switches between monoscopic and stereoscopic modes, and the offset control is dynamically applied only when needed, achieving high-quality stereoscopic playback for character graphics while maintaining cost-effective design for other graphics.
Solution Approach 2:
The system changes the playback parameters of the graphics stream (including offset control) based on the video stream's mode. This parameter adaptation allows the system to provide high-quality stereoscopic playback for graphics that require it (such as character graphics in sync with video movement) while avoiding unnecessary processing and cost for graphics that don't require stereoscopic effect.
3Ease of operation
If offset control is always applied to realize simple stereoscopic effect, then the sense of depth is provided for all graphics, but characters moving with video synchronization are displayed monoscopically
Solution Approach 1:
The system dynamically adjusts the offset control parameter of the graphics stream based on the video stream's stereoscopic mode. When the video is in monoscopic mode, the graphics stream is played back without offset control, ensuring character graphics remain synchronized with the video. When the video switches to stereoscopic mode, the graphics stream automatically receives offset control to provide depth sense, thus adapting to changing conditions without compromising character synchronization.
Data Source
AI summary
A playback device for playing back a graphics stream in accordance with a stream selection table recorded on the recording medium. A procedure means determines a playback type of a graphics corresponding to the current stream number, based on the playback capability indicated by the capability register. The playback of graphics streams falls into two types, one of which is a first playback type in which a monoscopic graphics stream is used and the other is a second playback type in which a pair of left-eye graphics stream and right-eye graphics stream is used to perform a stereoscopic playback. The capability register indicates whether or not a capability to perform the stereoscopic playback by using the pair of left-eye graphics stream and right-eye graphics stream is present in the graphics decoder.