Vehicle Terminal Screen Resolution Detection via Coordinate Mapping
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Solution Overview
Problem
Existing methods for obtaining the screen resolution of a handheld terminal are costly and complex, especially when trying to synchronize the display with a vehicle-mounted terminal, as they often require special software that adds to the device's complexity and cost.
Innovation Solution
A method and vehicle-mounted terminal that establish a connection with the handheld terminal, map the display, and calculate the screen resolution by determining coordinate differences between corresponding points on both screens, using the ratio of these differences to derive the handheld terminal's resolution without the need for special software.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If special software is installed in the handheld terminal to obtain screen resolution, then the resolution can be obtained, but the cost and complexity of the handheld device increase
Solution Approach 1:
The patent uses the vehicle-mounted terminal as an intermediary device to obtain the resolution of the handheld terminal screen. Instead of installing special software in the handheld terminal, the system maps the handheld terminal's display to the vehicle-mounted terminal's larger screen and uses coordinate mapping to calculate the resolution. The vehicle-mounted terminal acts as a mediator that enables resolution detection without modifying the handheld terminal's software architecture.
Solution Approach 2:
The patent replaces the software-based resolution detection method with a mathematical calculation approach based on coordinate mapping. By establishing a mapping relationship between the handheld terminal screen coordinates and the vehicle-mounted terminal screen coordinates, the system calculates the resolution using coordinate differences and ratios, eliminating the need for special detection software in the handheld terminal.
2Measurement precision
If special software is installed in the handheld terminal to obtain screen resolution, then the resolution can be obtained, but the cost of the handheld device increases
Solution Approach 1:
The vehicle-mounted terminal serves as an intermediary that enables resolution detection without requiring any additional hardware or software in the handheld terminal. This approach transfers the detection functionality to the vehicle-mounted terminal, which already has the necessary processing capabilities, thereby avoiding additional costs for the handheld device.
Solution Approach 2:
The patent creates a virtual copy of the handheld terminal's display on the vehicle-mounted terminal's screen through mapping. This virtual mapping allows the system to analyze coordinate relationships and calculate resolution without physically accessing or modifying the handheld terminal's display hardware or software, thus avoiding additional manufacturing costs.
3Volume of moving object
If the screen of the handheld terminal is too small, then portability is improved, but operation difficulty increases
Solution Approach 1:
The patent maps the two-dimensional display of the handheld terminal onto the larger two-dimensional screen of the vehicle-mounted terminal, effectively utilizing the additional screen real estate of the vehicle-mounted terminal. This dimensional mapping allows users to operate the handheld terminal through the larger vehicle-mounted display, combining the portability benefits of the small handheld device with the operational ease of a larger screen.
Solution Approach 2:
The vehicle-mounted terminal acts as an intermediary interface between the user and the handheld terminal. Users interact with the handheld terminal's functionality through the larger vehicle-mounted screen, which provides easier operation while the handheld terminal maintains its compact form factor. The coordinate mapping system enables seamless interaction between the two devices.
Data Source
AI summary
A vehicle-mounted terminal and a method for obtaining a resolution of a screen of a handheld terminal are disclosed. The method includes establishing a connection between a handheld terminal having a second screen and a vehicle-mounted terminal having a first screen, mapping a display of the second screen onto the first screen, obtaining a first coordinate difference between two coordinate points on the second screen and a second coordinate difference between two mapped points on the first screen that correspond to the two coordinate points respectively, and obtaining a resolution of the second screen using the relationship that a ratio of the first coordinate difference to the second coordinate difference is equal to a ratio of a mapped resolution of the second screen mapped onto the first screen to the resolution of the second screen, wherein the mapped resolution of the second screen mapped onto the first screen is a first resolution and the resolution of the second screen is a second resolution.