Mobile Terminal STB Projection via Optical Code Verification
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Solution Overview
Problem
Selecting the correct display device for multimedia file projection from a mobile device to a large screen via a set top box (STB) is challenging when multiple devices are connected, leading to potential incorrect projections.
Innovation Solution
The mobile terminal and STB communication method involves generating and displaying identification information on the display device, which includes a scanning module to accurately identify and project content onto the correct device, using parameters like position, flicker frequency, and size to ensure precise scanning and verification of authenticity to prevent incorrect projections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If users select display device name through mobile terminal screen, then projection function can be implemented, but error rate increases when multiple display devices are connected
Solution Approach 1:
The patent introduces an optical code as an intermediary element between the mobile terminal and display device. The optical code contains identification information that mediates the connection process, allowing the mobile terminal to automatically identify and connect to the correct display device without manual selection, thereby eliminating selection errors while maintaining ease of operation
Solution Approach 2:
The patent replaces the manual mechanical selection process (clicking device names on screen) with an automated optical recognition system. The scanning module captures and decodes optical codes to automatically identify display devices, substituting the manual selection mechanism with an automated optical-mechanical system that improves both ease of operation and reliability
2Productivity
If automatic scanning and identification is implemented, then projection speed increases, but system complexity increases
Solution Approach 1:
The patent segments the automatic identification system into distinct functional modules: an optical code generation module in the display device, a scanning module in the mobile terminal, and a verification module. This segmentation allows each module to perform its specific function independently, improving projection speed while managing system complexity through modular design
Solution Approach 2:
The patent uses optical code copying as the basis for automatic identification. The identification information is encoded into an optical code that can be copied and transmitted visually from the display device to the mobile terminal's scanning module, enabling fast automatic recognition without complex direct communication protocols
Data Source
AI summary
A method of communication applied in a mobile terminal for projecting a file or content onto a display device through a set-top box (STB). The mobile terminal sends a request packet for requesting or triggering the STB to generate and display first identification information in a display area. When the first identification information displayed is scanned, and second identification information, should be identical to or should correspond to the first identification information, is generated by the STB. A comparison between the first identification information and the second identification information establishes authenticity and thus the identity of the sending mobile terminal, and the file or the content in the mobile terminal is then projected onto the display area of the correct display device through the STB. A second communication method, a mobile terminal, and a set-top box are also disclosed.