Rotating Display Screen for Multi-User Data Input Devices
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Solution Overview
Problem
Existing electronic data-input devices, such as payment terminals, face challenges in facilitating the simultaneous intervention of multiple users, particularly when space is limited, as users must repeatedly manipulate the device to perform their respective actions, which can be impractical and difficult in a face-to-face configuration.
Innovation Solution
A method that involves detecting a predetermined event to rotate the screen of the electronic data-input device by 180°, allowing a simple tilting motion to switch the display between users, with the rotation conditioned on both the detected event and the device's status, ensuring that the screen is only rotated when the next action is justified, thereby simplifying physical manipulations and protecting the device from unauthorized access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the device is positioned on a counter between two users face-to-face, then the device can be accessed by multiple users, but the physical manipulation required for each user to intervene becomes difficult and impractical
Solution Approach 1:
The screen is made dynamically rotatable by 180 degrees in response to detected events, allowing the display orientation to change adaptively between users. This dynamic adjustment eliminates the need for manual repositioning of the entire device while maintaining ease of access for both users positioned face-to-face.
Solution Approach 2:
Instead of moving the device in the horizontal plane (which would require users to reach across), the solution rotates the screen along a vertical axis perpendicular to the counter surface. This dimensional change allows both users to view and interact with the screen from their respective positions without physical interference.
2Ease of operation
If the screen is rotated to allow the second user to view information, then usability is improved, but sensitive information may be exposed to unauthorized users
Solution Approach 1:
The system incorporates feedback mechanisms that detect the current screen orientation and the identity of the active user. Based on this feedback, the system selectively rotates the screen only when appropriate (when a predetermined event occurs indicating user transition) and maintains secure orientations when sensitive operations are in progress, thus balancing usability with security.
Solution Approach 2:
The screen orientation parameter is changed dynamically based on detected events and system state. The rotation is conditional rather than continuous, changing only when the system determines it is safe and appropriate to do so, thereby controlling information exposure while maintaining usability.
3Reliability
If the device requires repeated manipulation to switch between users, then user control is maintained, but the operation becomes time-consuming and inefficient
Solution Approach 1:
The device performs self-service by automatically detecting user presence and initiating screen rotation when predetermined events occur (such as card insertion or specific button presses). This eliminates the need for manual manipulation to switch between users, significantly improving operation efficiency while maintaining secure user control through automated detection mechanisms.
Solution Approach 2:
The manual mechanical manipulation required to physically reposition the device or screen is replaced by an automated detection and rotation system. Sensors detect predetermined events and trigger automated screen rotation, substituting mechanical user action with an automated electromechanical system that improves efficiency.
Data Source
AI summary
A method for controlling the display of information on a screen of a data-input electronic device. The electronic device is intended to be used for implementing an operation involving the performance of a succession of actions and involving a plurality of users. According to the proposed technique, the method includes: detecting a predetermined event associated with the electronic device, delivering a signal that is representative of a detection of the predetermined event; rotating the display of information on the screen of the electronic device through 180°, as a function of the signal representative of detecting the predetermined event and a piece of state information associated with the electronic device.