Wireless Display System Hardware Extraction
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Solution Overview
Problem
Existing wireless display technologies consume significant CPU resources and are costly due to the need for real-time screen-capturing and encoding, which hinders the processing speed and quality of image display.
Innovation Solution
A wireless display system that uses a host-side data communication apparatus to acquire and transmit media data directly from the host's hardware via UWB, reducing CPU load by eliminating the need for screen-capturing and employing efficient data compression and transmission protocols.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If screen-capturing technique is used to achieve wireless display, then wireless display function is realized, but CPU resource consumption increases significantly
Solution Approach 1:
The patent extracts the screen-capturing and encoding tasks from the CPU by introducing a dedicated hardware module that directly accesses display memory and graphics adapter. This hardware module captures display data, compresses it, and transmits it wirelessly without requiring CPU intervention, thereby resolving the contradiction between achieving wireless display functionality and maintaining low CPU resource consumption.
Solution Approach 2:
The patent introduces an intermediary hardware module between the display system and wireless transmission. This module serves as a mediator that handles the complex tasks of data acquisition from display memory, compression, and wireless transmission, freeing the CPU from these resource-intensive operations while enabling wireless display functionality.
2Adaptability or versatility
If screen-capturing and encoding are performed in real-time, then wireless display is achieved, but processing speed decreases
Solution Approach 1:
The patent extracts real-time processing tasks from the CPU by implementing a dedicated hardware module that performs data acquisition, compression, and transmission independently. This extraction allows the CPU to maintain its original processing speed for other tasks while the hardware module handles the time-sensitive wireless display operations at optimal speed.
Solution Approach 2:
The patent replaces the CPU-based software processing mechanism with a hardware-based mechanical system. The hardware module directly accesses display memory and graphics adapter through dedicated interfaces, performing data capture and compression through hardware circuits rather than CPU instructions, thereby achieving faster processing speed while maintaining wireless display capability.
3Adaptability or versatility
If strong computational capability CPU is used for encoding and decoding, then screen-capturing function is achieved, but system cost increases
Solution Approach 1:
The patent extracts the computational tasks of encoding and decoding from the CPU by implementing dedicated hardware compression and decompression modules. This extraction eliminates the need for high-cost powerful CPUs, as the specialized hardware modules perform these functions more efficiently and cost-effectively, while still achieving complete screen-capturing functionality.
Solution Approach 2:
The patent replaces the expensive high-capability CPU requirement with more affordable specialized hardware modules designed specifically for data compression and wireless transmission. These dedicated modules are optimized for their specific function, providing cost-effective screen-capturing capability without the need for expensive general-purpose high-performance processors.
Data Source
AI summary
A wireless display system is disclosed comprising a host-side data communication apparatus connected to a host and configured to acquire media data containing at least display data from the hardware of the host, generate data message and transfer the data message wirelessly, and a display-device side data communication apparatus configured to receive the data message transferred wirelessly, interpret it into media data and then output to a display device. With the system of the present invention, CPU does not need to execute a screen-capturing program to acquire display information from a display memory unit and thus has a reduced work load, and transmission delay can also be reduced.