Stereoscopic Display Controller Time-Division Multiplexing Resolution
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Solution Overview
Problem
Existing electronic imaging devices that display stereoscopic images suffer from reduced resolution due to the separation of left and right eye images, which limits the perception of a clear stereoscopic effect.
Innovation Solution
The electronic imaging device employs a controller to generate and apply specific control signals to pixels, alternating the emission of stereoscopic images in a time-division scheme, using a barrier unit with sub-barriers to manage light transmission, ensuring that odd and even pixels display left and right eye images alternately, maintaining resolution by preventing image overlap.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If left and right eye images are spatially separated using optical devices, then a stereoscopic effect is achieved, but resolution is halved compared to plane images
Solution Approach 1:
The patent applies time-division multiplexing to alternately display left-eye and right-eye images in different time periods. The controller generates first control signals for left-eye images and second control signals for right-eye images, switching between them periodically. This temporal separation replaces spatial separation, allowing both images to use the full pixel resolution without halving it, while still achieving the stereoscopic effect through alternating presentation to each eye.
2Reliability
If stereoscopic images are displayed using spatial separation, then binocular parallax is achieved, but image clarity deteriorates due to resolution loss
Solution Approach 1:
The patent uses periodic time-division switching to display left-eye and right-eye images alternately in different time periods. The barrier unit synchronizes with this periodic action, switching its light transmission state to match the alternating image display. This temporal multiplexing maintains full image resolution and clarity for each eye's view while still providing the necessary binocular parallax for stereoscopic perception.
Solution Approach 2:
The barrier unit acts as an intermediary between the display pixels and the viewer's eyes. It synchronizes with the time-division multiplexing scheme, selectively blocking or transmitting light to ensure that each eye receives only the intended image (left-eye or right-eye) during its designated time period. This intermediary mechanism enables clear stereoscopic perception without requiring spatial separation that would reduce resolution.
3Measurement precision
If time-division multiplexing is used to maintain resolution, then image overlap must be prevented, but this requires precise control signaling
Solution Approach 1:
The controller implements periodic time-division multiplexing by generating first control signals during first time periods for left-eye images and second control signals during second time periods for right-eye images. This regular periodic switching pattern simplifies the control mechanism compared to arbitrary timing, as the barrier unit and display system can synchronize to this predictable rhythm. The periodic nature ensures that left and right eye images are displayed in distinct, non-overlapping time windows, maintaining full resolution while using a manageable control signal structure.
Data Source
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AI summary
An electronic imaging device includes a display unit (100, 100_1) including a plurality of scan lines (S1, S2, Si, Sn-1, Sn), a plurality of data lines (D1, D2, Dj, Dm-1, Dm) and a plurality of pixels (110, 110_1) divided into a first region (102) and a second region (104), and a controller (400, 400_1) that generates first and second control signals (ELV1, ELV2, EM1, EM2) to control the light emission of the plurality of pixels (110, 110_1) and applies the first and second control signals (ELV1, ELV2, EM1, EM2) to the plurality of pixels (110, 110_1) in the first region (102) and the plurality of pixels in the second region (104), respectively. The controller (400, 400_1) may generate and apply the first control signal (ELV1, EM1) as a turn-off signal when second stereoscopic images synthesized in a second order different from a first order arc displayed in the first region (102) after first stereoscopic images synthesized in the first order are displayed in both the first and second regions (102, 104).