Direct Photoelectric Voltage Conversion for AR Display Signal Processing
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Solution Overview
Problem
Current AR and VR display technologies involve complex image signal conversion processes, lengthy processing threads, and a large number of circuit modules, leading to inefficient image processing and increased circuit area.
Innovation Solution
A virtual image display system comprising a photoelectric conversion part, a voltage conversion part using resistor circuits, and a display part, which directly converts optical image signals into voltage signals for display, eliminating the need for analog-to-digital and digital-to-analog conversions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If complex image signal conversion processes are used (including analog-to-digital and digital-to-analog conversions), then image display quality is maintained, but processing efficiency decreases and circuit area increases
Solution Approach 1:
The patent extracts and eliminates the unnecessary analog-to-digital conversion and digital-to-analog conversion modules from the traditional display system. By directly transmitting the current signal from the photoelectric conversion part to the display part through a simplified voltage conversion circuit, the system removes complex processing threads while maintaining display functionality, thereby improving processing efficiency and reducing circuit area.
Solution Approach 2:
The patent replaces the traditional multi-stage signal conversion mechanism (optical-to-electrical-to-digital-to-analog-to-electrical) with a simplified direct conversion mechanism (optical-to-current-to-voltage-to-display). This substitution eliminates intermediate conversion stages and their associated circuit modules, resolving the contradiction between processing efficiency and device complexity.
2Loss of time
If multiple conversion stages are used in the signal processing chain, then signal accuracy is maintained, but processing time increases
Solution Approach 1:
The patent performs voltage conversion directly at the output stage of the photoelectric conversion part, before signal transmission to the display part. This preliminary voltage conversion action eliminates the need for subsequent analog-to-digital and digital-to-analog conversion stages, significantly reducing signal processing time while maintaining signal integrity through direct current-to-voltage transformation.
3Ease of manufacture
If traditional AR/VR display systems are used with complete signal conversion chains, then display functionality is ensured, but manufacturing cost increases
Solution Approach 1:
The patent merges the voltage conversion function directly into the photoelectric conversion circuit module by integrating a voltage conversion circuit. This merging eliminates the need for separate analog-to-digital conversion modules and digital-to-analog conversion modules, reducing the overall circuit area and simplifying the manufacturing process, thereby lowering manufacturing costs while ensuring display functionality.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Simplifies the image signal processing flow, reduces the number of circuit modules, and decreases circuit area, resulting in more efficient and cost-effective virtual image display.
Implementation Method 1
a photoelectric conversion part configured to receive an optical image signal and convert the optical image signal into a current signal
Implementation Method 2
the voltage conversion part includes at least one resistor circuit, a current signal input terminal of the resistor circuit is electrically connected to a current signal output terminal of each of the at least one photoelectric conversion part
Data Source
AI summary
An embodiment of the present disclosure provides a virtual image display system, including: a photoelectric conversion part for receiving an optical image signal and converting the optical image signal into a current signal; a voltage conversion part electrically connected to the photoelectric conversion part, for receiving the current signal and converting the current signal into a voltage signal; and a display part electrically connected to the voltage conversion part, for receiving the voltage signal and displaying an image according to the voltage signal.