Wireless Display Adapter for Video Transmission
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Solution Overview
Problem
Existing methods for linking electronic devices for media sharing, such as connecting a computer to a television, often require direct cable connections or specialized hardware like WiDi, which can be inconvenient and costly, and may necessitate hardware upgrades or purchases.
Innovation Solution
A method using a digital media controller to select a digital media renderer, with a digital media server capturing and encoding video and audio content for playback on the renderer via the DLNA protocol over a wireless local area network, eliminating the need for hardware upgrades or new purchases.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If direct cable connection is used to connect computer to television, then reliable video transmission is achieved, but installation complexity and cost increase due to cable routing requirements
Solution Approach 1:
The patent introduces a wireless display adapter as an intermediary device that captures video output from the computer and transmits it wirelessly to the television. This mediator eliminates the need for direct cable connections between computer and TV, reducing installation complexity while maintaining reliable video transmission through the wireless adapter bridge.
Solution Approach 2:
The patent replaces the mechanical cable connection system with a wireless transmission system using display adapters. The physical cable routing and mechanical connectors are substituted by wireless communication protocols, eliminating the need for cable installation while maintaining video transmission functionality.
2Ease of operation
If WiDi connection is used for wireless display, then cable installation is eliminated, but hardware cost and complexity increase due to special hardware requirements
Solution Approach 1:
The patent uses a display adapter that captures and copies the video output signal from the computer's display interface. This copied signal is then transmitted wirelessly to the television, allowing existing devices to function as wireless displays without requiring specialized WiDi hardware in the computer or TV, thus reducing hardware complexity while maintaining ease of operation.
Solution Approach 2:
The display adapter serves multiple functions: it captures video from various computer interfaces, encodes the signal for wireless transmission, and interfaces with different television types. This universal adapter approach allows existing consumer electronics to work together without requiring specialized WiDi capabilities, reducing hardware requirements while maintaining ease of setup.
3Adaptability or versatility
If hardware upgrades are performed to support wireless display, then wireless connectivity is achieved, but device cost increases
Solution Approach 1:
The display adapter acts as an affordable intermediary that adds wireless display capability without requiring expensive hardware upgrades to the computer or television. By placing the wireless transmission functionality in a separate, lower-cost adapter device, the system achieves adaptability while controlling device cost.
Solution Approach 2:
The patent employs a relatively inexpensive display adapter that can be easily replaced or upgraded if technology evolves. This approach allows consumers to gain wireless display capability at lower cost rather than investing in expensive, long-term hardware upgrades to primary devices like computers or televisions.
Data Source
AI summary
A method of outputting video content from a digital media server to a digital media renderer includes providing a digital media controller to select a digital media renderer for video playback, sending a playback request from the digital media controller to the selected digital media renderer, the selected digital media renderer requesting data from the digital media server in response to receiving the playback request from the digital media controller, and the digital media server capturing video and capturing audio. The method further includes the digital media server encoding the captured video and the captured audio to respectively produce encoded video and encoded audio, outputting the encoded video and the encoded audio from the digital media server to the selected digital media renderer, and playing the encoded video and the encoded audio on the selected digital media renderer.