Video Receiver Format Switching Timing Control
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Solution Overview
Problem
TV sets struggle to properly display images immediately after switching between 3D and 2D video modes due to changes in video parameters, lacking a mechanism to communicate timing for format switching effectively.
Innovation Solution
A receiver is designed to include a configuration with a header parser, elementary decoder, and backend processor that inserts time offset and 3D type parameters into the codec layer, allowing for precise timing and format management during video signal switching, ensuring proper display by interleaving left-eye and right-eye images or converting 2D to 3D formats as needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If video signal switching between 3D and 2D modes is implemented, then video content versatility is improved, but display timing accuracy deteriorates due to parameter changes
Solution Approach 1:
The transmitter inserts time offset information and 3D type parameters into the video stream in advance before switching occurs. This allows the receiver to prepare the display timing and format changes beforehand, ensuring accurate synchronization when switching between 3D and 2D video modes without losing timing precision
2Manufacturing precision
If format switching parameters are communicated to the receiver, then display accuracy is improved, but data transmission complexity increases
Solution Approach 1:
The patent combines multiple pieces of switching information (time offset, 3D type parameters, format change indicators) into a single integrated data structure that is inserted into the existing video stream. This merging approach transmits all necessary format switching parameters together in one organized package, reducing overall transmission complexity while maintaining complete display accuracy information
Data Source
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AI summary
A transmitter according to the present invention includes a decoder that decodes a video signal received from outside and acquires identification information including a format concerning 2D or 3D of video from a layer corresponding to each frame of the video signal and a backend processor that performs spatial or temporal scaling of video data by the video data based on the identification information and, when the format of the video is switched, switches parameters for the scaling adjusting to switching timing.