Selection Circuit for Redundant Function Key Activation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Electronic devices become unusable if one of their function keys is broken, as they rely on specific keys for specific functions, and there is no redundancy in function key control.
Innovation Solution
A selection circuit with N selection modules, N control terminals, and enable terminals, where each selection module enables its corresponding terminal if the first control terminal receives an 'on' signal or all second control terminals receive an 'on' signal, allowing alternative key combinations to activate functions even if a primary key is broken.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If one function key is assigned to one specific function, then the function control is simple and direct, but the system reliability deteriorates when the key is broken
Solution Approach 1:
The patent implements multi-functionality by assigning multiple control terminals (primary and alternative keys) to the same function. Each function is configured to respond to at least one primary control terminal and one alternative control terminal, allowing the function to be activated through multiple different key inputs, thus ensuring the function remains accessible even if one key fails.
2Reliability
If alternative key combinations are added for each function, then the reliability improves when a key is broken, but the device complexity increases
Solution Approach 1:
The patent segments the control system into multiple independent control terminals, each capable of triggering the same function. Instead of requiring a complex combination of keys to be pressed simultaneously, the system divides the control function across multiple terminals where pressing any single terminal (primary or alternative) is sufficient to activate the function, thereby reducing operational complexity while maintaining reliability.
3Adaptability or versatility
If multiple control terminals are configured for each function, then the adaptability improves to handle key failures, but the manufacturing complexity increases
Solution Approach 1:
The system implements self-service through automatic detection and switching mechanisms. When a control terminal is configured with both primary and alternative keys, the system automatically monitors the status of these terminals and can autonomously switch between them based on operational status, eliminating the need for manual reconfiguration or complex external control systems during manufacturing and operation.
Data Source
AI summary
A selection circuit includes at least three control terminals; wherein: a first group of the at least three control terminals is configured to provide a first signal for controlling a first function; and a second group of the at least three control terminals is also configured to provide a second signal for controlling the first function.