Remote Control Display Caching for Low-Bandwidth Graphic Updates
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Solution Overview
Problem
Existing remote control units (RCUs) for unmanned systems face challenges in providing high-speed data communication for video display due to the significant amount of data that needs to be transmitted in real-time, leading to potential delays and operational issues such as missing targets or crashes.
Innovation Solution
A display management system for RCUs that includes local storage of graphic elements and APIs to manage display screens, allowing for the transmission of only file identifiers and video placement information, reducing the data required over slower connections like RS-422/485.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If video data and graphical elements are transmitted from host computer to RCU in real-time, then display quality and responsiveness are improved, but data transmission requirements and communication bandwidth increase significantly
Solution Approach 1:
The patent segments graphical display elements into separate downloadable files (images, videos, icons, text) that are stored locally in the RCU's file system. Instead of transmitting complete graphical data continuously, the system transmits only file identifiers and display parameter data, dramatically reducing communication bandwidth requirements while maintaining display quality.
Solution Approach 2:
The patent implements preliminary action by downloading and storing graphical element files in the RCU's local memory before operation. The RCU receives and caches image files, video files, icon files, and other graphical elements in advance, so that during operation only lightweight reference data needs to be transmitted from the host computer.
2Speed
If high-speed data communication link is used between host computer and RCU, then real-time video display is achieved, but system complexity and cost increase
Solution Approach 1:
The patent uses copying by creating a local copy of graphical element files in the RCU's file system. Instead of requiring continuous high-speed transmission of original graphical data, the RCU maintains local copies that can be displayed using only lightweight file identifier references transmitted over slow serial connections.
Solution Approach 2:
The patent extracts the heavy graphical data (images, videos, icons) from the communication stream and stores it locally in the RCU. Only the essential control data (file identifiers, display parameters) remains in the communication stream, allowing standard serial connections to be used instead of high-speed specialized links.
3Measurement precision
If complete graphical files are transmitted over serial connection, then display fidelity is maintained, but transmission delays occur causing missed targets or crashes
Solution Approach 1:
The patent creates local copies of graphical files in the RCU's file system, allowing immediate display without waiting for continuous data transmission over the slow serial connection. The RCU receives file identifier references and can instantly retrieve and display the corresponding graphical elements from local storage, eliminating transmission delays while maintaining display fidelity.
Solution Approach 2:
The patent performs preliminary action by pre-downloading and storing complete graphical element files in the RCU's local memory before operation begins. This ensures that when display updates are needed, the RCU can immediately access high-fidelity graphical data locally without experiencing transmission delays over the serial connection.
Data Source
AI summary
A remote control display management system is disclosed. In an example, a remote control apparatus for unmanned systems includes a display screen for displaying graphic elements and a memory device storing a file for a graphic element and display parameters for displaying the graphic element. The apparatus also includes a processor and an application programming interface (“API”). The processor receives a command message from a host computer via the API. The command message includes at least one parameter value. The processor determines the command message is related to the graphic element stored in the memory device, and causes the graphic element to be displayed on the display screen by applying the at least one parameter value to the display parameters. The disclosed apparatus enables feature-rich high resolution graphics to be displayed on a remote control regardless of a connection speed with a host computer.