3D Display Driving Circuit for Low-Latency Eye Tracking
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Solution Overview
Problem
Traditional naked-eye three-dimensional display systems suffer from significant transmission latency due to the processing time of the host device, which is slower than the frame rate, resulting in delayed adjustment of three-dimensional image data.
Innovation Solution
A three-dimensional display system comprising an eye tracking module, a driving circuit, and a host device, where the eye tracking module generates eye tracking data including a scene image and a scene depth map, and the driving circuit dynamically adjusts original three-dimensional image data based on eye position and depth data to reduce latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the host device processes eye position and depth data to adjust three-dimensional image data, then the image adjustment can be achieved, but significant transmission latency occurs due to the host device's processing time being slower than the frame rate
Solution Approach 1:
The patent extracts the eye data processing function from the host device and relocates it to the driving circuit. The driving circuit receives eye position and depth data directly from the eye tracking module and processes this data locally to adjust three-dimensional image data, eliminating the need for the host device to handle this processing and thereby reducing transmission latency significantly
Solution Approach 2:
The driving circuit acts as an intermediary between the eye tracking module and the three-dimensional display panel. It receives eye tracking data, processes it to determine eye position and depth, adjusts the three-dimensional image data accordingly, and outputs the adjusted data to the display panel, thereby creating a low-latency processing path that bypasses the host device
2Productivity
If the host device adjusts three-dimensional image data based on eye tracking data, then the image can be adapted to user eye position, but the processing time exceeds the frame rate causing latency
Solution Approach 1:
The patent extracts the real-time image adjustment function from the host device and implements it in the driving circuit. The driving circuit processes eye tracking data and adjusts three-dimensional image data at the display driver level, enabling processing speeds that match or exceed the frame rate and eliminating the latency bottleneck of host device processing
Solution Approach 2:
The driving circuit performs preliminary processing of eye tracking data by generating eye position and depth information in advance before the image data needs to be displayed. This preliminary action allows the system to pre-adjust the three-dimensional image data based on predicted eye positions, reducing the perceived latency
Data Source
AI summary
A three-dimensional display system, a driving circuit, and a display method are provided. The three-dimensional display system includes an eye tracking module, a driving circuit, and a host device. The eye tracking module is configured to generate eye tracking data including a scene image and a scene depth map, and perform eye detection to output an eye position data and an eye depth data. The driving circuit is coupled to the eye tracking module, and configured to receive the eye position data and the eye depth data. The host device is coupled to the driving circuit, and configured to provide original three-dimensional image data. The driving circuit is further configured to dynamically adjust the original three-dimensional image data to generate an adjusted three-dimensional image data according to the eye position data and the eye depth data.