Image Display Signal Processor Noise Reduction via Dual Stream Segmentation
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Solution Overview
Problem
Current electronic devices that capture and display image streams face decreased display quality due to increased noise resulting from shorter exposure times of each frame, necessitating an improvement in image stream quality.
Innovation Solution
An electronic device comprising a sensing module, lens module, and signal processor that captures images at different frequencies or periods, with the signal processor processing and outputting third images for improved display, utilizing a combination of charge-coupled device (CCD) or complementary metal-oxide-semiconductor (CMOS) elements, and a display connected to present these images.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the frequency of catching images is increased, then the real-time image stream presentation is improved, but the exposure time of each frame is decreased leading to increased noise and decreased display quality
Solution Approach 1:
The patent divides the image stream into two separate streams: a first image stream captured at a lower frequency with longer exposure time for high quality, and a second image stream captured at a higher frequency with shorter exposure time for real-time updates. This segmentation allows each stream to serve its specific purpose without compromise.
Solution Approach 2:
The patent merges the first image stream and second image stream into a unified output. The signal processor combines images from both streams, using the high-frequency second images to update the lower-frequency first images, thereby achieving both real-time presentation and high display quality simultaneously.
2Productivity
If the exposure time of each frame is decreased to increase catching frequency, then the real-time capability is improved, but the noise increases and display quality decreases
Solution Approach 1:
The signal processor acts as an intermediary that receives images from both the low-frequency high-quality stream and the high-frequency low-quality stream. It processes and combines these images, using the high-frequency images to update the low-frequency images, thereby reducing noise while maintaining high catching frequency capability.
Solution Approach 2:
The patent changes the exposure time parameter dynamically by capturing images at two different frequencies. The first image stream uses longer exposure time for quality, while the second uses shorter exposure time for frequency. The signal processor then combines these with different parameter characteristics to achieve optimal results.
3Reliability
If images are caught at higher frequency, then the real-time image stream is improved, but the noise of images increases
Solution Approach 1:
The patent segments the image capturing into two modes: one optimized for real-time response (higher frequency, shorter exposure) and one optimized for image quality (lower frequency, longer exposure). The signal processor then integrates these segmented streams to achieve both reliability and low noise.
Solution Approach 2:
The signal processor performs preliminary processing on the high-frequency second images before combining them with the first image stream. This preliminary action involves processing the high-frequency images to reduce noise and improve quality before integration, thereby maintaining real-time capability while reducing harmful noise effects.
Data Source
AI summary
An electronic device and an image displaying method are disclosed. The electronic device mainly comprises a sensing module, a signal processor and a display. The sensing module catches a plurality of first images with a first frequency or a first period or catches a plurality of second images with a second frequency or a second period. The signal processor receives the second images and outputs a plurality of third images correspondingly. The display presents the first images or the third images.