Partial Frame Update Control Circuit for Display Bandwidth Optimization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
As display resolution increases in portable devices, the need to read and update entire image frames at each refresh leads to wasteful bandwidth usage and increased power consumption, especially when only partial frames need updating.
Innovation Solution
A method and system for selectively updating either whole or partial frames on a display, using an indication signal transmitted during the back porch interval of a vertical synchronization signal, which includes an update control circuit to determine the update type and encode the signal, allowing for efficient data transmission and processing only for the necessary frame regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the entire image data is read at each frame refresh to update the display, then the display can be fully updated, but bandwidth is wasted and power consumption increases
Solution Approach 1:
The patent divides the frame update process into two types: full frame updates and partial frame updates. The update control circuit determines whether to update the entire frame or only specific regions based on the indication signal. This segmentation allows the system to update only the necessary portions of the display, reducing the amount of data that needs to be transmitted and processed, thereby lowering power consumption while maintaining display update reliability.
Solution Approach 2:
The patent implements partial frame update capability where only the necessary regions of the frame are updated instead of always updating the entire frame. The indication signal specifies whether a full frame update or partial frame update is needed, allowing the system to perform exactly the amount of work required - no more, no less - thus reducing bandwidth usage and power consumption while ensuring complete updates when necessary.
2Reliability
If the entire image data is read at each frame refresh, then complete frame updates are ensured, but bandwidth usage increases
Solution Approach 1:
The patent segments the frame data transmission into full frame transmission and partial frame transmission modes. The indication signal in the data packet header specifies which mode should be used. This segmentation reduces the quantity of data transmitted by sending only the necessary portions of the frame when partial updates are sufficient, while still ensuring complete frame updates when required by the display requirements.
Solution Approach 2:
The system performs partial frame updates only when necessary, transmitting exactly the amount of data needed for the update. The indication signal controls whether full frame data or partial frame data is transmitted, optimizing bandwidth usage by avoiding unnecessary data transmission while maintaining the ability to perform complete frame updates when display reliability requires it.
3Loss of energy
If an indication signal system is implemented to enable partial frame updates, then bandwidth and power are optimized, but device complexity increases
Solution Approach 1:
The update control circuit is designed to handle both full frame updates and partial frame updates through a single unified structure. The circuit interprets the indication signal to determine the appropriate update mode, making it multi-functional. This universal approach avoids the need for separate control circuits for different update types, thereby reducing overall device complexity while still achieving power optimization through selective partial frame updates.
Data Source
AI summary
A method of operating a display system may include receiving an indication signal indicating a data update, receiving data, and updating a whole frame on the display with an image corresponding to the data based on the indication signal corresponding to a whole frame or updating a partial frame on the display with an image corresponding to the data based on the indication signal corresponding to a partial frame.