Display Sync Signal Converter for Image Sensor Synchronization
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Solution Overview
Problem
As portable electronic devices with increasing display sizes and resolutions require more power to display high-resolution images, there is a need for methods to reduce power consumption while maintaining image quality.
Innovation Solution
A converter system that receives a sync signal from a display driver, converts it into a different sync signal for image sensing, adjusting the frame rate, frequency, timing, format, or protocol, to optimize power usage without separate memory storage, allowing for on-the-fly image processing and transfer between image sensors and displays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If display size and resolution are increased to improve image quality, then image quality is improved, but power consumption increases
Solution Approach 1:
The patent changes the frame rate parameter by converting the display sync signal to match the image sensor's native frame rate. By synchronizing the image sensor to capture at the same frame rate as the display refresh, the system eliminates unnecessary image capture operations, thereby reducing power consumption while maintaining display quality.
2Adaptability or versatility
If separate synchronization operations are used for image sensing and display, then synchronization flexibility is improved, but device complexity increases
Solution Approach 1:
The patent merges the display synchronization function with the image sensor synchronization function by using a single converter circuit. This converter takes the display driver's sync signal and directly generates the image sensor sync signal, eliminating the need for separate synchronization circuits and reducing overall system complexity.
Solution Approach 2:
The converter circuit performs multiple functions: it converts the display sync signal frequency, adjusts timing offsets, and generates the image sensor sync signal. This multi-functional approach replaces what would otherwise require multiple dedicated circuits, reducing device complexity while maintaining synchronization flexibility.
3Quantity of substance
If frame rate conversion is performed without separate memory storage, then bandwidth usage is reduced, but data transfer complexity increases
Solution Approach 1:
The system performs preliminary synchronization by converting the display sync signal to the image sensor sync signal before image data is captured and transferred. This preliminary action ensures that the image sensor is ready to capture frames at the correct rate, eliminating the need for buffer memory and complex data transfer operations.
Data Source
AI summary
In one embodiment, the converter is configured to receive a first sync signal from a display driver and to convert the first sync signal into a second sync signal. The second sync signal is for controlling image sensing.