Video Display Frame Signal Processing for Bandwidth Efficiency
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Solution Overview
Problem
LCDs face limitations in performance and flexibility due to high bandwidth requirements and large memory needs when trying to achieve high frame rates, as traditional timing specifications result in redundant blank signals that occupy valuable resources and exceed the transmission bandwidth limits.
Innovation Solution
A method and apparatus that separate and process frame signals to reduce blank signal lengths, combining them with image data to generate new frame signals, thereby reducing system resource utilization and transmission bandwidth requirements, allowing for increased frame rates without exceeding the available bandwidth.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional timing specifications are used with LCDs, then positioning time is provided for electron gun movement, but blank signals occupy large memory space and exceed transmission bandwidth limits
Solution Approach 1:
The patent extracts and removes the redundant blank signals from the frame signal transmission. By separating the blank signals from the image data and eliminating them from the transmission stream, the system achieves high frame rates without exceeding bandwidth limits or requiring large memory space, while still maintaining the necessary positioning function through alternative means.
Solution Approach 2:
The patent changes the timing parameters by reducing the blank signal duration and adjusting the frame rate. This allows the system to operate at higher frame rates (e.g., 120 Hz) while staying within the bandwidth constraints of the transmission interface, effectively resolving the contradiction between positioning time and data transmission capacity.
2Productivity
If frame rate is increased to very high rate, then image display efficiency is improved, but duplication of frame signal occupies large memory space
Solution Approach 1:
The patent extracts and eliminates blank signals from the frame signal duplication process. By not duplicating the blank signals along with the image data, the system achieves high frame rates without requiring large memory space for buffering, thus resolving the contradiction between productivity and resource consumption.
3Reliability
If LCD adopts traditional timing specification, then synchronization is maintained, but transmission bandwidth requirement exceeds available bandwidth
Solution Approach 1:
The patent removes blank signals from the transmission stream, reducing the total data rate to fit within the bandwidth limits of the transmission interface. The synchronization function is maintained through the remaining signal components, resolving the contradiction between synchronization reliability and bandwidth consumption.
Data Source
AI summary
A method of increasing efficiency of video display includes receiving a first frame signal, where the first frame signal includes a first blank signal and a first image data, where the first blank signal includes a first sync signal, a first front-porch signal and a first back-porch signal. The method also includes separating the first blank signal and the first image data, performing image processing for the first image data for generating a second image data, and adding a second blank signal to the second image data for generating a second frame signal, where the second blank signal includes a second sync signal, a second front-porch signal and a second back-porch signal.