Synchronization Circuit for Stereoscopic Video Channel Switching
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Solution Overview
Problem
Existing methods for stereoscopic vision using a single display device often result in untidy video changes due to the need for image mute processes, which hinder rapid comparison of left and right channel videos, especially when channel changes occur at short cycles.
Innovation Solution
A synchronization process is implemented to correct timing mismatches between left and right channel video signals, allowing for synchronized display without the need for image mute, enabling smooth video changes on a typical 2D display device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If image mute process is performed during video channel changes, then video display stability is maintained, but video change speed is reduced and comparison efficiency between left and right channels deteriorates
Solution Approach 1:
The patent applies preliminary action by performing synchronization adjustment in advance before the actual video channel change occurs. The synchronization separating circuit extracts synchronization signals and the delay amount determining circuit calculates timing differences beforehand, allowing the video changing unit to switch channels without interruption. This pre-computation eliminates the need for image mute while maintaining display stability.
Solution Approach 2:
The patent introduces intermediary components including the synchronization separating circuit, delay amount determining circuit, and synchronization signal generating circuit. These intermediaries handle the timing coordination between channels, enabling smooth transitions without direct disruption to the video display. The intermediary circuits manage the complexity of synchronization independently, allowing rapid channel switching.
2Reliability
If dedicated 3D display device is used for stereoscopic vision, then display quality is improved, but device availability and versatility are reduced
Solution Approach 1:
The patent implements universality by enabling any typical 2D display device to function as a stereoscopic display device through software-based synchronization control. The video signal processing device can alternately display left and right channel videos with precise timing coordination, allowing standard monitors and televisions to provide 3D viewing experience without requiring specialized hardware.
Solution Approach 2:
The patent replaces the mechanical/physical 3D display hardware system with an electronic control system. Instead of using dedicated 3D display hardware, the invention uses signal processing circuits and timing control to achieve stereoscopic effect on conventional display devices, substituting physical hardware with electronic intelligence.
3Adaptability or versatility
If video signals for left and right channels are displayed alternately, then stereoscopic vision is achieved, but timing synchronization between channels becomes complex and difficult to control
Solution Approach 1:
The patent applies segmentation by dividing the video signal into distinct left and right channel components, with separate synchronization signal extraction for each channel. The synchronization separating circuit independently processes synchronization signals from both channels, allowing precise timing control without overwhelming complexity. This modular approach manages the complexity of multi-channel synchronization.
Data Source
AI summary
A video processing device includes an input unit that receives a video signal for a left channel and a video signal for a right channel, a synchronization processing unit that performs a synchronization process used to correct mismatches between timings of the video signal for the left channel and the video signal for the right channel which are input to the input unit, a changing unit that changes video signal components of the video signal for the left channel and the video signal for the right channel which have undergone the synchronization process in the synchronization processing unit at an instructed timing and selects and outputs a synchronization signal component of either of the video signals, a control unit that performs setting for a video signal selected by the changing unit depending on an instructed mode, and an output unit that outputs the video signal selected by the changing unit.