Display Control Apparatus for Synchronized Screen Transitions
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Solution Overview
Problem
Existing display control methods fail to synchronize the screen transitions between a main terminal and a sub-terminal effectively, leading to discrepancies in their displays.
Innovation Solution
A display control program that transmits change information from a display control apparatus to a predetermined device, allowing the apparatus to update its screen accordingly based on received information, ensuring synchronized display changes across connected devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the main terminal writes screen display information to a common file and the sub-terminal displays according to the information read from the common file, then the sub-terminal screen display is synchronized with the main terminal, but the main terminal screen does not coincide with the sub-terminal screen after screen transition
Solution Approach 1:
The patent implements a feedback mechanism where the sub-terminal sends a response back to the main terminal after reading screen display information from the common file. This feedback loop allows the main terminal to know when the sub-terminal has successfully read the display information, enabling the main terminal to update its screen accordingly and maintain synchronization.
Solution Approach 2:
The main terminal writes the screen display information to the common file before the sub-terminal reads it. This preliminary action ensures that the display information is prepared and available in advance, allowing the sub-terminal to read and display the information without delay, thus maintaining screen synchronization.
2Productivity
If the sub-terminal displays screen information from a common file, then the display can be updated automatically, but the main terminal screen transitions are not reflected on the sub-terminal in real-time
Solution Approach 1:
The patent establishes a continuous communication loop between the main terminal and sub-terminal. The main terminal continuously monitors the common file for screen display information, and the sub-terminal continuously reads and updates its display based on the information in the common file. This continuous action ensures real-time screen synchronization without delays.
3Reliability
If screen transition information is transmitted from the main terminal to the sub-terminal, then screen synchronization is improved, but the complexity of the communication protocol increases
Solution Approach 1:
The patent uses a common file as an intermediary medium for communication between the main terminal and sub-terminal. Instead of implementing a complex direct communication protocol, the main terminal writes screen transition information to the common file, and the sub-terminal reads the information from the same file. This intermediary approach simplifies the communication protocol while maintaining reliable screen synchronization.
Data Source
AI summary
A display control apparatus transmits change information for changing display provided by a predetermined device included in data acquired by the display control apparatus to the predetermined device. In response to a predetermined response to the transmission of the change information, the display control apparatus displays, on its own display device, a predetermined screen corresponding to display provided by the predetermined device changed by the change information.