Multi-Screen Controller for Mobile Docking Station Display Output
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Solution Overview
Problem
Many mobile computing devices, particularly smartphones and tablets, lack the capability to output content to external displays, especially multiple displays, leading to a poor user experience for productivity and multitasking applications.
Innovation Solution
A multi-screen controller on the mobile device transcodes pixel data from a first video coding format associated with third-party image sources to a second format compatible with a docking station, allowing output to multiple external displays, bypassing OS limitations by acting as an intermediary and allocating frame buffers independently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the mobile device uses its operating system to output content to external displays, then the device can display content on external screens, but the OS does not support video output to multiple external displays and cannot scale resolution to match external display resolutions
Solution Approach 1:
The patent introduces a third-party software application that acts as an intermediary between the mobile device's operating system and the external displays. This application receives content from the OS, transcodes it to formats compatible with external displays, and manages the display output independently of OS limitations, thereby enabling multi-display support without requiring OS changes
Solution Approach 2:
The application dynamically changes video parameters such as resolution, frame rate, and codec format based on the detected external display characteristics. It transcodes content from the OS's native format to formats suitable for external displays, adjusting parameters like pixel data aggregation and frame buffering to match the external display's resolution and capabilities
2Adaptability or versatility
If the mobile device outputs video to a single external display, then video content can be displayed externally, but the device cannot output multiple video streams to multiple external displays simultaneously
Solution Approach 1:
The patent segments the video processing task by creating separate frame buffers for each external display and independently managing pixel data aggregation for each display. The application divides the workload of processing multiple video streams, allowing each display to receive optimized content without overwhelming the mobile device's processing capabilities
Solution Approach 2:
The application adds a new processing dimension by aggregating pixel data from multiple sources and transcoding it into different formats for different displays. It operates in a layered architecture where the OS provides content, the application layer handles transcoding and format conversion, and the display layer presents content, enabling multi-display output without direct OS involvement
3Ease of operation
If the mobile device lacks native video output support, then the device remains simple and portable, but it cannot output content to external displays at all
Solution Approach 1:
The third-party application serves as a mediator that bridges the gap between the mobile device's portable design and the need for external display connectivity. It leverages existing USB communication interfaces without requiring hardware changes, maintaining the device's portability while enabling external display output through software-based video processing and transcoding
Data Source
AI summary
This disclosure provides methods, devices, and systems for processing content for multiple displays. The present implementations more specifically relate to outputting video content from a mobile computing device to multiple displays coupled to a docking station. In some aspects, a multi-screen controller for a mobile computing device may receive pixel data associated with multiple displays from one or more image sources and may aggregate the received pixel data into multiple frames associated with the multiple displays, respectively. The multi-screen controller transcodes each frame of pixel data, from a first video coding format associated with the one or more image sources to a second video coding format associated with a docking station coupled to the displays, and outputs each frame of transcoded pixel data to the docking station for display on a respective one of the displays.