Single-Stage Video Receiver for Non-Pixel-Based Display Interfaces
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing video interface systems face challenges in efficiently converting source video formats to display formats, particularly in non-pixel-based systems where source video clock and timing control are not explicitly available, leading to increased hardware requirements, silicon cost, and power consumption.
Innovation Solution
A single-stage video receiver system that generates a display stream by directly bridging link rate and display rate, using a single PLL to convert the link clock to a display clock, and employing FIFO buffers to manage pixel flow, allowing for flexible format conversion without explicit source video timing control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a two-stage video receiver system is used to convert source video format to display format in non-pixel-based systems, then format conversion capability is improved, but hardware complexity and silicon cost increase
Solution Approach 1:
The patent merges the two-stage video receiver system into a single-stage system by integrating the link buffer and line buffer functions into one buffer structure, and combining the PLL and format conversion logic into a unified control mechanism. This reduces hardware complexity while maintaining format conversion capability across different video sources and display devices.
Solution Approach 2:
The single-stage video receiver is designed with universal functionality to handle multiple video formats and resolutions through a unified architecture. The buffer structure and control logic can adapt to different source video formats and display device requirements without requiring separate dedicated hardware paths for each format conversion scenario.
2Adaptability or versatility
If a two-stage video receiver system is used, then format conversion capability is improved, but power consumption increases
Solution Approach 1:
By merging the two-stage system into a single stage, the patent eliminates redundant processing steps and reduces the number of active hardware components simultaneously operating. The single buffer structure and unified control logic reduce dynamic power consumption compared to two separate stages with independent buffers and control mechanisms.
3Reliability
If explicit source video timing control is implemented, then video synchronization is improved, but hardware requirements and silicon cost increase
Solution Approach 1:
The video receiver system performs self-synchronization by automatically detecting and adapting to the source video timing characteristics without requiring external explicit timing control signals. The single-stage buffer and control logic self-adjust to maintain proper synchronization between source video and display device, eliminating the need for additional dedicated timing control hardware.
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
This approach reduces silicon costs and power consumption while ensuring display device timing specifications are met, providing a flexible and efficient solution for format conversion in non-pixel-based video interfaces.
Implementation Method 1
a phase lock loop circuit to convert the link clock to a display clock
Data Source
AI summary
A method and system for reading data from a link buffer for output to a display device. A link buffer read period is determined which balances a write throughput over a source video frame time and a read throughput over a display frame time. A threshold is determined indicating a required number of pixels stored in a link buffer prior to starting to read data out of the link buffer for a next line display. A read signal is issued when the link buffer read period ends and the threshold is reached.