Background FM Channel Search Using Location Triggers
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Solution Overview
Problem
Conventional FM radio receivers in mobile devices require manual updating of valid FM channel lists based on location changes, leading to user intervention and potential loss of available channels.
Innovation Solution
A method and apparatus that perform a background low-power search for FM radio channels, using a global positioning component to determine location and update channel lists dynamically without user intervention, by scanning for channels exceeding an interference threshold and generating lists based on location changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual updating of FM channel lists is required, then user control over channel selection is maintained, but user effort and potential channel loss increase
Solution Approach 1:
The system automatically performs background searches to update FM channel lists without requiring user intervention. The radio receiver self-updates its channel database by scanning frequency bands and storing valid channels, eliminating the need for manual channel list maintenance while preserving user control over the interface.
Solution Approach 2:
The system performs channel searching and list generation in advance before the user needs to use the FM radio function. By pre-updating the channel list in the background, the system ensures channels are ready for immediate use without requiring time-consuming manual updates when the user activates the radio application.
2Reliability
If background search is performed continuously, then channel availability is maintained, but energy consumption increases
Solution Approach 1:
Instead of continuous searching, the system performs background channel searches periodically or triggered by specific events such as location changes. The search is activated when the device detects a change in geographic position, ensuring the channel list remains accurate without the constant energy drain of continuous scanning.
Solution Approach 2:
The background search operation is made dynamic by adjusting its activation based on device state and location changes. The system transitions between search and idle states, activating the search only when necessary (e.g., after detecting location change) and remaining idle otherwise, thus balancing reliability with energy efficiency.
3Adaptability or versatility
If frequent scanning is performed, then channel list is kept updated, but processing time increases
Solution Approach 1:
The system performs channel scanning and list generation in advance during background operations, so when the user needs to access FM radio, the channel list is already updated and ready. This preliminary action eliminates the need for time-consuming scans during user interaction.
Solution Approach 2:
The background search operates continuously in an idle state, maintaining the channel list without interrupting other device functions. By keeping the search process alive in the background and only activating intensive scanning when location changes occur, the system maintains adaptability while minimizing processing time during active use.
Data Source
AI summary
Apparatus and methods for maintaining a valid radio channel list that may be updated dynamically without user intervention based on changes in the device location and the availability of an antenna are disclosed herein. For example, a device capable of performing a background low power search that initiates a new search based on changes in the geographic location of the device. This search may run based on the state of the radio and geographic location changes making sure the radio channels are updated in the background based on the geographic location with no user intervention required.