Key Group Display System for POS Devices
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Solution Overview
Problem
Existing display systems for operation screens, such as those in POS devices, face challenges in efficiently updating and organizing key groups, leading to increased time and complexity in displaying necessary functions, as not all key groups can be shown simultaneously due to screen size limitations.
Innovation Solution
A display system that includes a key group master memory unit, a touch panel, and display switching means, allowing for the storage and retrieval of key group master information to dynamically switch and display key groups based on user input, enabling efficient updating and organization of key groups according to their functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If all key groups are displayed simultaneously on the screen, then user operability is improved, but screen size limitations prevent complete display of all functional groups
Solution Approach 1:
The patent divides the key groups into multiple segments or pages that can be displayed separately. Instead of attempting to show all key groups simultaneously on a limited screen, the system segments them into manageable groups that can be navigated through using switching keys, allowing comprehensive functionality while respecting screen size constraints.
Solution Approach 2:
The patent implements dynamic switching between different key group displays using switching keys. The display content changes dynamically based on user input, allowing the system to present different functional groups on demand rather than attempting to display everything statically at once, thereby improving operability within screen limitations.
2Manufacturing precision
If the display updates the entire screen when switching key groups, then display accuracy is improved, but update time increases
Solution Approach 1:
The patent extracts and updates only the necessary portions of the display when switching key groups. Instead of redrawing the entire screen, the system identifies and updates only the specific key group area that has changed, maintaining display accuracy while significantly reducing the time required for updates by eliminating redundant rendering operations.
3Ease of operation
If key groups are organized by function, then ease of operation is improved, but device complexity increases due to multiple key group management
Solution Approach 1:
The patent implements a universal key group management system where switching keys serve multiple functions: they identify current key groups, enable navigation between groups, and provide contextual operations. This multi-functional approach organizes key groups by function for ease of operation while reducing overall system complexity by using a unified management mechanism rather than separate control systems for each function.
Data Source
AI summary
Individual keys necessary for operations are grouped into key groups according to their functions. Key groups which do not fall within a display block allotted for all the keys are further divided into sub-groups. Switching keys for switching to other sub-groups are added. An operator operates the switching keys to arrive at the intended key.