Rotary Switch Remapping for Extended Channel Selection
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Solution Overview
Problem
Portable radios with limited channel selection capabilities face challenges in extending feature selection without compromising tactile feedback, particularly in noisy and gloved usage environments, and must consider space constraints.
Innovation Solution
The method involves remapping the function of one rotary control switch to extend the channel selection range of another switch in portable communication devices, such as a radio and a remote speaker microphone, allowing access to additional channels without hardware changes or user interaction, using controller-driven remapping techniques.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If additional hard stops are added to the channel selector switch to provide more channels, then the channel selection capability is improved, but the tactile feedback is reduced
Solution Approach 1:
The patent divides the channel selection function into two separate switches: a primary channel selector switch with hard stops for tactile feedback (providing 16 channels) and a secondary switch without hard stops for additional channel selection (providing another 16 channels). This segmentation allows each switch to be optimized for its specific function, maintaining tactile feedback on the primary switch while expanding total channel capability.
Solution Approach 2:
The patent transitions from a single-dimension switch (one switch controlling all channels) to a two-dimension switch matrix (primary switch selecting channel groups, secondary switch selecting specific channels within groups). This dimensional change enables 256 total channels (16x16) while keeping each individual switch simple and tactile.
2Adaptability or versatility
If continuous rotary switches are used to extend channel selection, then the channel range is improved, but the tactile feedback and user acceptance deteriorate
Solution Approach 1:
The patent segments the channel selection into two distinct switching mechanisms: the primary switch maintains hard stops for tactile feedback, while the secondary switch provides additional selection capability. This segmentation allows the system to offer extended channel range without compromising the tactile qualities of the main control interface.
3Adaptability or versatility
If channel up/down buttons are used to extend feature selection, then the channel capability is improved, but the ease of operation deteriorates due to multiple button presses required
Solution Approach 1:
The patent uses two rotary switches instead of button presses, allowing users to select channels through simple rotational movements on each switch. This approach maintains operational simplicity by eliminating the need for multiple button presses or holding buttons down, while still providing extended channel capability.
4Adaptability or versatility
If more user interface features are added to portable electronic products, then the functionality is improved, but the space constraints are worsened
Solution Approach 1:
The patent makes existing switches multi-functional: the primary switch serves both as a direct channel selector (1-16) and as a zone selector for the secondary switch. The secondary switch serves both as an independent channel selector (17-32) and as an extension of the primary switch for zones 2-16. This multi-functionality allows extended channel capability without adding dedicated hardware for each function, thus conserving device space.
Data Source
AI summary
A method and apparatus for expanding control switch selectivity in a portable communication system is provided. A rotary control switch is remapped based on the presence of two or more switches in the system thereby increasing the number of user selectable switch features, such as user selectable radio channels. The remapping can occur automatically without the need for hardware changes. The improved user interface can extend channel range selection in a portable communication system having a portable radio and radio accessory.