Screen Transfer Control System Cursor Shape Detection
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Solution Overview
Problem
In the screen transfer control system used in thin client systems, character input is inconvenient for users as they need to manually start up the soft keyboard every time a character input entry field is selected, especially when multiple fields are involved, increasing user load.
Innovation Solution
The system includes a detecting circuit that recognizes a change in cursor shape to determine user intent for character input and automatically starts up the soft keyboard if the cursor shape change is maintained for a predetermined time, eliminating the need for manual startup.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the mobile terminal only receives image data without processing input fields, then data security is improved, but character input convenience deteriorates
Solution Approach 1:
The screen transfer control device acts as an intermediary between the mobile terminal and the input processing. It receives drawing commands from the terminal, detects cursor shape changes indicating character input intent, and automatically activates soft keyboards by sending appropriate commands back to the terminal, thus enabling convenient input while maintaining data security
Solution Approach 2:
The system enables self-service by automatically detecting when a user intends to input characters through cursor shape changes and automatically activating the appropriate soft keyboard, eliminating the need for manual keyboard activation by the user
2Device complexity
If manual soft keyboard activation is required for each character input field, then system simplicity is improved, but user load increases
Solution Approach 1:
The screen transfer control device implements feedback by monitoring cursor shape changes from the mobile terminal and responding by automatically activating soft keyboards. This feedback mechanism allows the system to adapt to user intent without increasing complexity or user load
3Reliability
If the terminal processes only image data without cursor information, then data security is improved, but automatic keyboard activation deteriorates
Solution Approach 1:
The screen transfer control device serves as a mediator that receives drawing commands containing cursor shape information from the mobile terminal, processes this information to detect character input intent, and enables automatic keyboard activation without requiring the terminal itself to process such data
Data Source
AI summary
A screen transfer control system includes a business device performing a business process, a mobile terminal, and a screen transfer control device converting a business screen of the business device to image data and sending the image data to the mobile terminal, the screen transfer control device converting the business screen to the image data on the basis of the drawing command, detecting a change in the cursor shape on the basis of cursor information included in the drawing command, and sending change information, when a change in the cursor shape is detected, to the mobile terminal, the mobile terminal displaying the image data from the screen transfer control device, determining whether the cursor shape is changed on the basis of the change information, and starting up a software keyboard when a screen touch that made the change in the cursor shape continues for a predetermined time.